CN103118075B - Collection server achieving multi-way transmission of collected data - Google Patents
Collection server achieving multi-way transmission of collected data Download PDFInfo
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- CN103118075B CN103118075B CN201310010865.1A CN201310010865A CN103118075B CN 103118075 B CN103118075 B CN 103118075B CN 201310010865 A CN201310010865 A CN 201310010865A CN 103118075 B CN103118075 B CN 103118075B
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Abstract
The invention provides a collection server achieving multi-way transmission of collected data. The collection server comprises a power module, a single chip microcomputer, a smoke sensor input module, an infrared sensor input module, a voltage output control module, a three-way relay control module, a PL 3120 power line carrier module, an RS 485 communicatin module, an RS 232 communication module, an FT 3120 twisted pair cable module and a transmission control protocol (TCP)/internet protocol (IP) serial interface module circuit. According to the collection server, transmission can be achieved through an RS 485 bus, an RS 232 serial interface, a power line of the PL3120 power line carrier module, and the internet and in other ways. Transmission of the collected data can be achieved through several buses, communication among the buses is achieved, interconnection and information communication among equipment are achieved, and control for voltage output of 0-10 V is achieved through control of the single chip microcomputer.
Description
Technical field
The present invention relates to internet of things equipment technical field, particularly relate to a kind of acquisition server data of collection being carried out various mode transmission.
Background technology
Traditional data acquisition server is more single, function singleness, only has RS485 bus or the transmission of TCP/IP grid line, or RS232 serial ports, and the interface can selected for user is fewer.These data wires all need cloth data wire besides, construction, difficult in maintenance.Will derive many problems in construction and installing engineering, it must must plan the place that future, equipment was installed before construction, and was planned by the cable that may be used for communicating in the future, connected up in order to during construction later.If do not planned in advance, rethinking installation communication equipment in the future will be more difficult, does not have available communication media.
In addition, the module that commercially much equipment all needs front end input voltage variable is carried out control and is exported, but the adjustable equipment of the voltage that can have bought is fewer again, and its range of regulation is limited, does not reach the demand in market.The equipment of pressure regulation is simultaneously all local device, can not control at a distance, bring much inconvenience like this to control voltage.If the voltage adjusting device installed is in more dangerous place, people cannot touch again, and that controls equipment with regard to more having no idea.
Summary of the invention
The technical problem to be solved in the present invention, is to provide a kind of acquisition server data of collection being carried out various mode transmission, the data of collection can be transmitted in these buses, can realize the intercommunication mutually between different bus; Thus the interconnected and information interchange realized between equipment.
The present invention is achieved in that a kind of acquisition server data of collection being carried out various mode transmission, comprises power module, single-chip microcomputer, Smoke Sensor input module, infrared sensor input module, voltage output control module, three tunnel relay control module, PL3120 power line carrier module, RS485 communication module, RS232 communication module, FT3120 twisted-pair feeder module and TCP/IP and turns serial port module circuit; The model of described single-chip microcomputer is STC10F08XE; Described power module turns serial port module circuit be connected with described single-chip microcomputer, PL3120 power line carrier module, FT3120 twisted-pair feeder module, TCP/IP respectively; Described Smoke Sensor input module, infrared sensor input module, voltage output control module, three tunnel relay control module, PL3120 power line carrier module, RS485 communication module, RS232 communication module, FT3120 twisted-pair feeder module, TCP/IP turn serial port module circuit and are all connected with described single-chip microcomputer; Described power module is single-chip microcomputer, PL3120 power line carrier module, FT3120 twisted-pair feeder module, TCP/IP turns serial port module circuit provides power supply; The data message collected is passed to single-chip microcomputer by described Smoke Sensor input module and infrared sensor input module, after single-chip microcomputer process, data message after process is transferred out by described PL3120 power line carrier module, or gone out by described FT3120 twisted-pair feeder module transfer, or be transferred in 485 buses by described RS485 communication module, or be transferred on serial bus by described RS232 communication module, or turn serial port module circuit transmission to PC or be transferred on Ethernet by described TCP/IP; When extraneous communication line is to described single-chip microcomputer transmission process signal, processing signals outputs to described three tunnel relay control module after single-chip microcomputer process or voltage output control module carries out control operation; If processing signals is control relay signal, then go to control corresponding relay by described three tunnel relay control module, if processing signals is control voltage signal, then remove by described voltage output control module the voltage controlling output 0 ~ 10V; Described PL3120 power line carrier module receive on power line external device transmission signal to single-chip microcomputer time, after single-chip microcomputer process, deal with data is transferred in 485 buses by described RS485 communication module, or be transferred on serial bus by described RS232 communication module, or turn serial port module circuit transmission to PC or be transferred on Ethernet by described TCP/IP; When the signal that described FT3120 twisted-pair feeder module receives outside device transmission on twisted-pair feeder is to single-chip microcomputer, after single-chip microcomputer process, deal with data is transferred in 485 buses by described RS485 communication module, or be transferred on serial bus by described RS232 communication module, or turn serial port module circuit transmission to PC or be transferred on Ethernet by described TCP/IP; Thus the data realizing gathering are transmitted with carrying out various ways.
Tool of the present invention has the following advantages: transmission of the present invention controls to adopt multiple transmission means, both can adopt RS485 bus transfer, and can adopt RS232 Serial Port Transmission again, also has the modes such as the power line of PL3120 power line carrier module and Internet Transmission.The data of such collection can be transmitted in these buses, can realize the intercommunication mutually between different bus; Thus the interconnected and information interchange realized between equipment; Be supplied to the interface that user enriches.And the existing traditional communication of PL3120 power line carrier module high transmission rates and stability, save again the problem that wiring is difficult.As long as the place of power supply can be provided just to use this module to communicate, safeguard simple, easy to use.What this PL3120 power line carrier module adopted is the transmission means of peer-to-peer, just can communicate, do not have master-slave between each equipment, easy for installation, simplifies flexible.With three tunnel relay control module in the present invention simultaneously, send control command by corresponding control end and control; 0 ~ 10V voltage can also be realized and export control, not by the restriction in geographical position.As long as the place that power line can arrive, this voltage output control module can control, and which reduces in some dangerous local out of contior troubles, realizes not affecting can control by geographical conditions.In addition, FT3120 twisted-pair feeder module transfer feature of the present invention: bus maximum transmission distance is 2.7km, the transmission rate of network is 300 ~ 1.25Mbps, network can form distributed arbitrary structures form network, adopt three-decker, i.e. territory, subnet and node, the number of nodes of system is without any restriction, containing 48 No. ID in FT3120 twisted-pair feeder chip, communication reliability is high, have two CPU to be responsible for communication specially in this FT3120 twisted-pair feeder chip, fault-tolerant be completed by hardware and software with error detecing capability simultaneously; Really achieve the interchangeability of product, and wiring is flexible.The testing circuit interface of the present invention also with smoke alarm and infrared sensor, can realize fire or high temperature alarm.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the detailed construction schematic diagram of circuit of the present invention.
Embodiment
Refer to shown in Fig. 1 and Fig. 2, a kind of acquisition server data of collection being carried out various mode transmission of the present invention, comprises power module 1, single-chip microcomputer 2, Smoke Sensor input module 3, infrared sensor input module 4, voltage output control module 5, three tunnel relay control module 6, PL3120 power line carrier module 7, RS485 communication module 8, RS232 communication module 9, FT3120 twisted-pair feeder module 10 and TCP/IP and turns serial port module circuit 11; The model of described single-chip microcomputer 2 is STC10F08XE; Described power module 1 turns serial port module circuit 11 be connected with described single-chip microcomputer 2, PL3120 power line carrier module 7, FT3120 twisted-pair feeder module 10, TCP/IP respectively; Described Smoke Sensor input module 3, infrared sensor input module 4, voltage output control module 5, three tunnel relay control module 6, PL3120 power line carrier module 7, RS485 communication module 8, RS232 communication module 9, FT3120 twisted-pair feeder module 10, TCP/IP turn serial port module circuit 11 and are all connected with described single-chip microcomputer 2; Described power module 1 is single-chip microcomputer 2, PL3120 power line carrier module 7, FT3120 twisted-pair feeder module 10, TCP/IP turns serial port module circuit 11 provides power supply; The data message collected is passed to single-chip microcomputer 2 by described Smoke Sensor input module 3 and infrared sensor input module 4, after single-chip microcomputer 2 processes, data message after process is transferred out by described PL3120 power line carrier module 7, or transferred out by described FT3120 twisted-pair feeder module 10, or be transferred in 485 buses by described RS485 communication module 8, or be transferred on serial bus by described RS232 communication module 9, or turn serial port module circuit 11 by described TCP/IP and be transferred to PC or be transferred on Ethernet; When extraneous communication line is to described single-chip microcomputer 2 transmission process signal, processing signals outputs to described three tunnel relay control module 6 after single-chip microcomputer 2 processes or voltage output control module 5 carries out control operation; If processing signals is control relay signal, then go to control corresponding relay by described three tunnel relay control module 6, if processing signals is control voltage signal, then remove by described voltage output control module 5 voltage controlling output 0 ~ 10V; Described PL3120 power line carrier module 7 receive on power line external device transmission signal to single-chip microcomputer 2 time, after single-chip microcomputer 2 processes, deal with data is transferred in 485 buses by described RS485 communication module 8, or be transferred on serial bus by described RS232 communication module 9, or turn serial port module circuit 11 by described TCP/IP and be transferred to PC or be transferred on Ethernet; When the signal that described FT3120 twisted-pair feeder module 10 receives outside device transmission on twisted-pair feeder is to single-chip microcomputer 2, after single-chip microcomputer 2 processes, deal with data is transferred in 485 buses by described RS485 communication module 8, or be transferred on serial bus by described RS232 communication module 9, or turn serial port module circuit 11 by described TCP/IP and be transferred to PC or be transferred on Ethernet; Thus the data realizing gathering are transmitted with carrying out various ways.
Described PL3120 power line carrier module 7 comprises: PL3120 electric power line carrier chip 71, first crystal oscillating circuit 72, first reset circuit 73, signal of communication receiving circuit 74 and signal of communication transtation mission circuit 75; Described first crystal oscillating circuit 72, first reset circuit 73, signal of communication receiving circuit 74, signal of communication transtation mission circuit 75 are all connected with described PL3120 electric power line carrier chip 71; 10th pin of described PL3120 electric power line carrier chip 71, the 12nd pin are connected with the 26th pin of described STC10F08XE single-chip microcomputer 2, the 25th pin respectively; The data message collected is passed to single-chip microcomputer 2 by described Smoke Sensor input module 3 and infrared sensor input module 4, after single-chip microcomputer 2 processes, the data message after process is transmitted by the signal of communication transtation mission circuit 75 of PL3120 power line carrier module 7; The signal of communication receiving circuit 74 of described PL3120 power line carrier module 7 receives the signal of the external device transmission on power line to single-chip microcomputer 2.This first crystal oscillating circuit 72 provides working signal pulse for PL3120 electric power line carrier chip 71; First reset circuit 73 is for the PL3120 electric power line carrier chip 71 that resets; Signal of communication receiving circuit 74 and signal of communication transtation mission circuit 75 are for the reception of the communication data between equipment and transmission.
Described signal of communication receiving circuit 74 comprises three rank high pass filter and coupling inductors; One end of described coupling inductor and external circuit net RXCOMP(are as shown in Figure 2) be connected, the other end is connected with described PL3120 electric power line carrier chip 71; Described three rank high pass filters are connected with described PL3120 electric power line carrier chip 71.
Described signal of communication transtation mission circuit 75 comprises the amplifier, initiatively low pass filter 752 and the second-order low-pass filter 753 that have two emitter and export; Described active low pass filter 752, the amplifier with the output of two emitter and second-order low-pass filter 753 connect successively; Described second-order low-pass filter 753 is connected with described PL3120 electric power line carrier chip 71.
As shown in Figure 2, one end of the SW1 switch of described first reset circuit 73 is connected with the 35th pin of PL3120 electric power line carrier chip 71, and the other end is connected with signal ground.Described first crystal oscillating circuit 72 comprises: resistance Y1, electric capacity C32 and electric capacity C31; The two ends of this resistance Y1 are connected with the 29th pin of PL3120 electric power line carrier chip 71 and the 30th pin of PL3120 electric power line carrier chip 71 respectively.Three rank high pass filters in this signal of communication receiving circuit 74 include: electric capacity C5, electric capacity C6, electric capacity C7, electric capacity C8, electric capacity C9, resistance R6, resistance R7, resistance R8, resistance R9 and resistance R10; These 5 resistance (R6-R10) and 5 electric capacity (C5-C9) form the logical sigma-delta A/D converter loop filter of band on chip.Coupling inductor in this signal of communication receiving circuit 74 includes: the electric capacity C1 connected successively, electric capacity C2, resistance R2, resistance R3, resistance R5 and electric capacity C4; This electric capacity C4 is connected with the 15th pin of PL3120 electric power line carrier chip 71.
Wherein, described FT3120 twisted-pair feeder module 10 comprises: FT3120 twisted-pair feeder chip 101, second crystal oscillating circuit 102, second reset circuit 103, data transmission/reception circuit 104 and data sending/receiving testing circuit 105; Described second crystal oscillating circuit 102, second reset circuit 103, data transmission/reception circuit 104, data sending/receiving testing circuit 105 is all connected with described FT3120 twisted-pair feeder chip 101;
When sending after described FT3120 twisted-pair feeder chip 101 data received on Ethernet process, described data sending/receiving testing circuit 105 has detected that data send, then the LED of data sending/receiving testing circuit 105 transmitting terminal can light, and sends to external equipment after data process by described FT3120 twisted-pair feeder chip 101 by described data transmission/reception circuit 104 through twisted-pair feeder; When described FT3120 twisted-pair feeder chip 101 receives the data of external equipment transmission by described data transmission/reception circuit 104, described data sending/receiving testing circuit 105 detects the data of reception, then the LED of data sending/receiving testing circuit 105 receiving terminal can light.
Described data transmission/reception circuit 104 comprises: first clamp circuit be made up of diode D2B and diode D2A, second clamp circuit be made up of diode D1B and diode D1A, communications transformer FT-X1, the 3rd clamp circuit be made up of diode D102B and diode D101A, the 4th clamp circuit, electric capacity C101, electric capacity C102 and the binding post JP101 be made up of diode D102A and diode D101B; 20th pin of described FT3120 twisted-pair feeder chip 101, the 19th pin are all connected with the 5th pin of communications transformer FT-X1, the 6th pin respectively through the first clamp circuit, the second clamp circuit; 2nd pin, the 1st pin of described communications transformer FT-X1 are all connected with one end of described electric capacity C101, one end of electric capacity C102 respectively through the 3rd clamp circuit, the 4th clamp circuit; The other end of described electric capacity C101 is connected with the 2nd pin of described binding post JP101; The other end of described electric capacity C102 is connected with the 1st pin of described binding post JP101; Described 3rd clamp circuit, the 4th clamp circuit all connect signal ground.
Described data sending/receiving testing circuit 105 comprises: resistance R215, resistance R216, resistance R217, resistance R218, resistance R219, resistance R55, resistance R56, electric capacity C209, electric capacity C210, diode D216A, diode D216B, comparator U204A, comparator U204B, inverter U203A, inverter U203B, receiving terminal LED 1 and transmitting terminal LED 2; 17th pin of described FT3120 twisted-pair feeder chip is connected with the negative pole of described diode D216A, the positive pole of diode D216B respectively through resistance R215; The positive pole of described diode D216A is connected with one end of described electric capacity C209, one end of resistance R216, the positive pole of comparator U204A respectively, and the other end of described electric capacity C209, the other end of resistance R216 all connect power module; The negative pole of described diode D216B is connected with one end of described electric capacity C210, one end of resistance R217, the negative pole of comparator U204B respectively, and the other end of described electric capacity C210, the other end of resistance R217 all connect signal ground; The negative pole of described comparator U204A is connected with power module through described resistance R218, and the positive pole of described comparator U204B is connected with power module through described resistance R219, and the negative pole of described comparator U204A is connected with the positive pole of comparator U204B; 1st pin of described comparator U204A is connected with the positive pole of receiving terminal LED 1 through inverter U203A, resistance R35; 7th pin of described comparator U204B is connected with the positive pole of transmitting terminal LED 2 through inverter U203B, resistance R56; The equal connection signal ground of the negative pole of described receiving terminal LED 1, the negative pole of transmitting terminal LED 2.
Wherein, described Smoke Sensor input module 3 comprises: resistance R17, resistance R18, resistance R19, electric capacity C6, optical coupler O4 and binding post J11; 24th pin of described STC10F08XE single-chip microcomputer is connected with one end of described optical coupler O4, resistance R18, one end of electric capacity C6 respectively, the other end of described resistance R18, another termination signal ground of electric capacity C6; The one termination optical coupler O4 of described resistance R17, another termination power module; The one termination optical coupler O4 of described resistance R19, the other end is connected with the 2nd pin of binding post J11; The 3rd equal connection signal ground of pin of described optical coupler O4 and binding post J11;
Described infrared sensor input module 4 comprises: resistance R20, resistance R21, resistance R22, electric capacity C7, optical coupler O5 and binding post J12; 23rd pin of described STC10F08XE single-chip microcomputer is connected with one end of described optical coupler O5, resistance R21, one end of electric capacity C7 respectively, the other end of described resistance R21, another termination signal ground of electric capacity C7; The one termination optical coupler O4 of described resistance R20, another termination power module; The one termination optical coupler O5 of described resistance R22, the other end is connected with the 2nd pin of binding post J12; The 3rd equal connection signal ground of pin of described optical coupler O5 and binding post J12.
Described RS485 communication module 8 comprises: resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, electric capacity C5, high speed photo coupling O1, high speed photo coupling O2, high speed photo coupling O3, differential line transceiver U3 and binding post J7; 7th pin of described STC10F08XE single-chip microcomputer, the 6th pin, the 8th pin are connected with described high speed photo coupling O3, high speed photo coupling O1, high speed photo coupling O2 respectively; Described resistance R5 one end, resistance R6 one end, resistance R7 one end all connect power module, and the resistance R5 other end, the resistance R6 other end, the resistance R7 other end are connected with high speed photo coupling O3, high speed photo coupling O1, high speed photo coupling O2 respectively; Described high speed photo coupling O3 is connected with high speed photo coupling O1 through resistance R8; Described resistance R10 connects high speed photo coupling O2, and resistance R9 connects high speed photo coupling O1, and described high speed photo coupling O3, high speed photo coupling O1, high speed photo coupling O2 connect the 1st pin, the 3rd pin, the 4th pin of differential line transceiver U3 respectively; Described differential line transceiver U3 the 2nd pin and the 3rd pins in parallel; 6th pin of described differential line transceiver U3 is connected with the 2nd pin of binding post J7 through resistance R2; 7th pin of described differential line transceiver U3 is connected with the 1st pin of binding post J7 through resistance R1; Be parallel with resistance R11 between described resistance R1 and resistance R2, the 6th pin of described differential line transceiver U3 is connected with the 5th pin of differential line transceiver U3 through resistance R3, electric capacity C5; 7th pin of described differential line transceiver U3 is connected with signal ground through resistance R4;
Described RS232 communication module 9 comprises: serial ports binding post J8, MAX232ACPE chip, electric capacity C3, electric capacity C4; Described MAX232ACPE chip the 1st pin is connected with the 3rd pin of MAX232ACPE chip through described electric capacity C3; MAX232ACPE chip the 4th draws foot meridian capacitor C4 and is connected with the 5th pin of MAX232ACPE chip; Described MAX232ACPE chip the 13rd pin is connected with the 7th pin of serial ports binding post J8, MAX232ACPE chip the 14th pin is connected with the 6th pin of serial ports binding post J8, described MAX232ACPE chip the 11st pin is connected with the 11st pin of STC10F08XE single-chip microcomputer, and MAX232ACPE chip the 12nd pin is connected with the 10th pin of STC10F08XE single-chip microcomputer.
Described three tunnel relay control module 6 are made up of three output control circuits 61, and described each output control circuit 61 includes: relay J 6A, resistance R40, resistance R41, resistance R42, resistance R43, resistance R44, resistance R45, triode Q1, triode Q2 and diode D5; Described resistance R42 is connected with the base stage of triode Q1 and one end of resistance R43 respectively; Another termination signal ground of this resistance R43; The emitter of described triode Q1 is connected with signal ground; The collector electrode of this triode Q1 is connected with the coil K1 of relay J 6A, the positive pole of diode D5, one end of resistance R41 respectively; The other end of this resistance R41 is connected with the base stage of triode Q2; The negative pole of described diode D5, the coil K1 of relay J 6A all connect power module; One end of described resistance R40 is connected with the negative pole of diode D5, and the other end is connected with the base stage of triode Q2; The emitter of described triode Q2 is connected with power module, and the collector electrode of this triode Q2 is connected with signal ground with resistance R45 through resistance R44; The resistance R42 of described three output control circuits 61 is connected with the 1st pin of STC10F08XE single-chip microcomputer, the 3rd pin, the 2nd pin respectively;
Described voltage output control module 5 comprises analog-digital chip PCF8591, operational amplifier LM358AH, resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, binding post J10; One end of described resistance R15, one end of resistance R16 are all connected with power module, and the other end of resistance R15, the other end of resistance R16 connect the 10th pin, the 9th pin connection of analog-digital chip PCF8591 respectively; 10th pin of described analog-digital chip PCF8591, the 9th pin are connected with the 28th pin of STC10F08XE single-chip microcomputer, the 27th pin respectively; 15th pin of described analog-digital chip PCF8591 is connected with the 3rd pin of operational amplifier LM358AH through resistance R12,2nd pin of operational amplifier LM358AH connects signal ground through resistance R14,1st pin of operational amplifier LM358AH is connected with the 2nd pin of binding post J10, and described resistance R13 is parallel to the 1st pin and the 2nd pin of described operational amplifier LM358AH; 1st pin of described binding post J10 connects signal ground;
Described TCP/IP turns serial port module circuit 11 and comprises: reset switch SW11, electric capacity C23, Network Interface Module J13, resistance R24, resistance R25, resistance R26, resistance R27, resistance R28, resistance R29; Described reset switch SW11 is connected with the 3rd pin of described Network Interface Module J13 with after electric capacity C23 parallel connection; 15th pin of Network Interface Module J13 is connected with the 12nd pin of Network Interface Module J13 through resistance R24; Described Network Interface Module J13 the 14th pin is connected with Network Interface Module J13 the 7th pin through resistance R25; One end of described resistance R28, one end of resistance R29 all connect power module, and the other end of resistance R28, the other end of resistance R29 are connected with resistance R26, resistance R27 respectively; Described Network Interface Module J13 the 11st pin is connected with the 21st pin of STC10F08XE single-chip microcomputer through resistance R26, and described Network Interface Module J13 the 10th pin is connected with the 22nd pin of STC10F08XE single-chip microcomputer through resistance R27.Wherein, in this Network Interface Module J13, the function of each pin is as follows: COM_CFG is serial ports configuration control pin, direction for input, for high level or unsettled time be normal mode of operation, for during low level being serial ports configuration mode, in the normal mode of operation, the data of serial ports transmitting-receiving are the forwarding datas of Ethernet, and under serial ports configuration mode, serial ports sends configuration order, arrange the running parameter of module or the working status parameter of acquisition module, there is weak pull-up this pin inside;
RST is the reseting pin of Network Interface Module J7, Low level effective, is greater than the negative pulse of 20us, module resets in this pin input one;
R_LED+, R_LED-, L_LED-, L_LED+ are the extraction pins of the inner LED of Network Interface Module J13, for the instruction of transfer of data;
The reception pin that TCP/IP turns serial port module circuit 11 is: RXD, and serial ports sends pin and is: TXD, this RXD pin, TXD pin are connected, for the transmission of data with serial ports pin IO10, IO8 of FT3120 twisted-pair feeder chip 21 respectively.
As shown in Figure 2, below to the description of the operation principle of Smoke Sensor input module 3, infrared sensor input module 4, voltage output control module 5, three tunnel relay control module 6, PL3120 power line carrier module 7, RS485 communication module 8, RS232 communication module 9, FT3120 twisted-pair feeder module 10:
Smoke Sensor input module 3: when the Smoke Sensor data in pin input high level that J11 binding post connects, optocoupler O4 conducting, being input to single-chip microcomputer the 24th pin is high level, and microprocessor detect, is reported to the police to high level just by having the information transmission of smog to upper computer software.
When the Smoke Sensor data in pin input low level that J11 binding post connects, optocoupler O4 disconnects, and being input to single-chip microcomputer the 24th pin is low level, and microprocessor detect is left intact to low level.
Infrared sensor input module 4: when the infrared sensor data in pin input high level that J12 binding post connects, optocoupler O5 conducting, being input to single-chip microcomputer the 23rd pin is high level, and microprocessor detect, is reported to the police to high level just by having infrared information transmission to upper computer software.
When the infrared sensor data in pin input low level that J12 binding post connects, optocoupler O5 disconnects, and being input to single-chip microcomputer the 23rd pin is low level, and microprocessor detect is left intact to low level.
Voltage output control module 5: what analog-digital chip PCF8591 adopted is I2C bus communication, control data outputs on PCF8591 chip by single-chip microcomputer, the data transaction of transmission is become corresponding analog quantity voltage value by PCF8951 chip, output on LM358AH operational amplifier, the analog voltage of input is put to be twice and is exported corresponding voltage by operational amplifier.
Wherein R15 and R16 is pull-up resistor, controls I2C bus; R13 is feedback resistance, and the present invention adopts negative feedback type to carry out eliminating the interference of common-mode signal.
Three tunnel relay control module 6: when single-chip microcomputer the 1st pin exports during high level, by being input to triode Q1 after resistance R42 and resistance R43 dividing potential drop, triode Q1 conducting under the effect of base stage high level, electric current flows to triode Q1 from relay J 6A coil K1, arrive ground again, form a loop, the action under the influence of a magnetic field of relay shell fragment, relay normally open contact is closed, and normally-closed contact disconnects.The base stage of triode Q2 is in low level state simultaneously, triode Q2 conducting, electric current from triode Q2 to resistance R44 and resistance R45 to ground, very large in resistance R45 resistance, resistance R44 resistance is very little, the voltage that resistance R45 gets is a lot, is approximately equal to supply voltage, so the OUT1 place of output control circuit 61 exports high level.
When single-chip microcomputer the 1st pin output low level, triode Q1 ends, and the K1 coil of relay J 6A does not have electric current, and the armature of relay is by attracting state to reset mode, and the normally-closed contact of relay resets, and normally opened contact disconnects.Because triode Q1 ends, the base stage of triode Q2 is equivalent to be connected with power supply, and triode Q2 also ends, the OUT1 place of output control circuit 61 by resistance R45 ground connection, output low level.
In PL3120 power line carrier module 7: signal of communication transtation mission circuit 75:
The transmit amplifier part of signal of communication transtation mission circuit 75 has the amplifier of two emitter output and the combination of active low pass filter 752.In sending mode, the electric current of about 7 microamperes can be absorbed by the TXBIAS chip stitch of PL3120 electric power line carrier chip 71.Signal of communication transtation mission circuit 75 connects transistor Q3B by cobasis and applies bias current to emitter follower transistor Q3A.Transistor Q1A and Q1B is assembled into a current mirror, for emitter follower provides bias current.
The TXDAC stitch of PL3120 electric power line carrier chip 71, resistance R15, resistance R16, electric capacity C10 and electric capacity C11 output resistance provide a Salen-Key second order filter, are derived by high-frequency energy in wave band.This filter also provides required voltage gain, transmission signal amplitude is brought up to the more high amplitude level for sending from the TXDAC of PL3120 electric power line carrier chip 21 from 5Vpp level.
Transistor Q4 and Q5 is also assembled into emitter follower.These two emitter follower signals be respectively on Q2B and Q3A emitter-base bandgap grading provide second order current gain.During transmission, there is a DC level diode drop (~ 0.7V) higher than TX3 site of the TX5 site in the amplifier 251 of two emitter output, and the low diode drop in Ze BiTX3 site, TX12 site.The bias current of Q4/Q5 output stage is approximately 110 microamperes.Chip uses TXSENSE signal monitoring to have the output current of the amplifier that two emitter exports.When not sending, block the reverse current transmitted from the TXBIAS stitch of PL3120 electric power line carrier chip 71 and close the amplifier that there is two emitter and export.
Signal of communication receiving circuit 74:
Receiving circuit on the RXIN circuit of PL3120 electric power line carrier chip 71 provides receiving communication signal.This receiving communication signal is transmitted with the coupling inductor being connected to RXCOMP circuit network by the three rank high pass filters be made up of electric capacity C1 and C2.The noise of signal of communication receiving circuit 74 to the communication frequency used lower than power line smart transceiver tentatively filters.Resistor R2 and capacitor C3 combines and tentatively filters high frequency noise.Assembly resistance R3, resistance R4 and diode group D1 form a soft limiter, the high signal amplitude of restricted passage high pass and low pass filter.Capacitor C4 then provided the analog high-pass on another rank to filter before signal digital.Put it briefly, lower than signal (the C-band work: 110kHz – 138kHz of 1.4Vpp in communication band, A band works: when 70kHz-90kHz) being sent to RXIN_PLC site from the RXIN site of coupling inductor, attenuation degree is only several decibels, and other all signal then weakens more severe.
, because field condition is very complicated, between each node, there is very high common-mode voltage in RS485 communication module 8: at some industrial control field.Although what RS-485 interface adopted is differential transfer mode, there is the ability of certain anti-common mode disturbances, but when common-mode voltage is more than the limit receiver voltage of RS-485 differential line transceiver, when being namely greater than+12V or being less than-7V, differential line transceiver U3 just again cannot normally work, and even can burn chip and instrument and equipment time serious.Solving the method for problems is by the isolated from power of DC-DC by system power supply and RS-485 differential line transceiver; By isolating device, signal is isolated, thoroughly eliminate the impact of common-mode voltage.Photoelectric coupled circuit is adopted to carry out signal isolation with Single Chip Microcomputer (SCM) system.What the present invention adopted is high speed photo coupling 6N137 chip, can carry out signal isolation, also can solve the too low problem of transmission rate simultaneously.
RS-485 standard definition signal threshold value be limited to ± 200mV up and down.Namely, as A-B>200mV, bus state should be expressed as " 1 "; As A-B<-200mV, bus state should be expressed as " 0 ".But when A-B is between ± 200mV, then bus state is uncertain, so we can establish upper and lower pull-up resistor, to avoid this nondeterministic statement as far as possible on A, B line.
A line adds the pull-up biasing resistor of a resistance R3 4.7K; B line adds the pull-down bias resistance of a resistance R4 4.7K.Middle resistance R11 is build-out resistor, and be generally 120 Ω, this specifically will see the cable that you transmit certainly.(build-out resistor: in 485 whole communication systems, in order to the transmission stability of system, we generally can add build-out resistor at first node and last node.）
When RS485 communication module is in output state, single-chip microcomputer the 6th pin exports high level, and optocoupler O1 exports the DE pin of high level output to ADM487 chip.The data that single-chip microcomputer will be transmitted by 8 pin TXD of single-chip microcomputer output on ADM487 chip by light-coupled isolation, carry out the output of data in RS485 bus.
When RS485 communication module is in wait or input state, single-chip microcomputer the 6th pin output low level, optocoupler O1 output low level outputs to the DE pin of ADM487 chip.ADM487 chip detection inputs to there being data, and data are transferred to optocoupler by RO pin, then enters data into 7 pin RXD of single-chip microcomputer, is input to single-chip microcomputer and carries out data processing.
RS232 communication module 9: electric capacity C3 and electric capacity C4 manages booster circuit, produces+12v and-12v two power supplys, is supplied to the needs of RS-232 serial ports level.During single-chip microcomputer transmission data, the 11st pin TXD exports data to the T1IN of MAX232ACPE chip, and the T1OUT of MAX232ACPE chip outputs to the 2nd pin of serial interface, outputs on other the equipment be connected with serial ports.When serial ports has data to input, when MAX232ACPE chip R1IN pin has detected that data input, the R1OUT pin of MAX232ACPE chip exports data on 10 pin RXD of single-chip microcomputer, and single-chip microcomputer processes after receiving data accordingly.
In FT3120 twisted-pair feeder module 10: data transmission/reception circuit 104 illustrates:
Occur that voltage is too high when twisted-pair feeder network-gate control circuit is unstable, higher than supply voltage, or occur that negative voltage all can burn out the T2 pin of FT3120 twisted-pair feeder chip 101, the voltage of FT_NETA and FT_NETB of the JP101 of binding post is limited between 0 ~ VDD5 by diode D1A and diode D1B, makes circuit more stable.Same diode D2A is the same with the effect of diode D2B effect and diode D1A and diode D1B.
Communications transformer FT-X1 is the high performance communication transformer of U.S. Ai Shilang (Echelon) company research and development.This communications transformer can work in the unshielded twisted pair network environment that there is high frequency common mode noise.
Wherein, the signal after the first clamp circuit, the second clamp circuit process is passed to communications transformer FT-X1, and output signal is coupled on TP circuit by electric capacity C101 and electric capacity C102 by communications transformer FT-X1.
Data sending/receiving testing circuit 105 illustrates:
The COMM_ACTIVE pin of FT3120 twisted-pair feeder chip 101 can be used for monitoring, sending and receive active state; Be in high level when FT3120 twisted-pair feeder chip 101 sends data, be in low level when FT3120 twisted-pair feeder chip 101 receives data, other situation is in high impedance status;
When FT3120 twisted-pair feeder module 10 is in transmission state, COMM_ACTIVE pin exports high level, diode D216B conducting outputs to the voltage that comparator U204B carries out holding with the P2V5 of comparator U204B and compares, wherein the voltage of the P2V5 end of comparator U204B is the half of supply voltage, namely 2.5V.When the P2V5 terminal voltage of diode D216B conducting output voltage higher than comparator U204B, comparator U204B output low level, the more just very high level outputting to LED 2 through inverter U203B, then LED 2 is shinny.Diode D216A cut-off simultaneously, the voltage of the P2V5 end of the voltage ratio comparator U204A of the FT_RXS end of comparator U204A is high, comparator U204A output HIGH voltage, then through inverter U203A output low level to the positive pole of LED 1; LED 1 does not work.
When FT3120 twisted-pair feeder module 10 is in accepting state, COMM_ACTIVE pin output low level, diode D216A conducting, the voltage of the P2V5 end of the voltage ratio comparator U204A of the FT_RXS end of comparator U204A is low, comparator U204A output low level, then export high level to the positive pole of LED 1 through inverter U203A; LED 1 is bright.Diode D216B cut-off simultaneously, the voltage of the P2V5 end of the voltage ratio comparator U204B of the FT_RXS end of comparator U204B is low, comparator U204B output HIGH voltage, then through inverter U203B output low level to the positive pole of LED 2, not working of LED 2.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (9)
1. the data of collection are carried out an acquisition server for various mode transmission, it is characterized in that: comprise power module, single-chip microcomputer, Smoke Sensor input module, infrared sensor input module, voltage output control module, three tunnel relay control module, PL3120 power line carrier module, RS485 communication module, RS232 communication module, FT3120 twisted-pair feeder module and TCP/IP and turn serial port module circuit; The model of described single-chip microcomputer is STC10F08XE; Described power module turns serial port module circuit be connected with described single-chip microcomputer, PL3120 power line carrier module, FT3120 twisted-pair feeder module, TCP/IP respectively; Described Smoke Sensor input module, infrared sensor input module, voltage output control module, three tunnel relay control module, PL3120 power line carrier module, RS485 communication module, RS232 communication module, FT3120 twisted-pair feeder module, TCP/IP turn serial port module circuit and are all connected with described single-chip microcomputer; Described power module is single-chip microcomputer, PL3120 power line carrier module, FT3120 twisted-pair feeder module, TCP/IP turns serial port module circuit provides power supply; The data message collected is passed to single-chip microcomputer by described Smoke Sensor input module and infrared sensor input module, after single-chip microcomputer process, data message after process is transferred out by described PL3120 power line carrier module, or gone out by described FT3120 twisted-pair feeder module transfer, or be transferred in 485 buses by described RS485 communication module, or be transferred on serial bus by described RS232 communication module, or turn serial port module circuit transmission to PC or be transferred on Ethernet by described TCP/IP; When extraneous communication line is to described single-chip microcomputer transmission process signal, processing signals outputs to described three tunnel relay control module after single-chip microcomputer process or voltage output control module carries out control operation; If processing signals is control relay signal, then go to control corresponding relay by described three tunnel relay control module, if processing signals is control voltage signal, then remove by described voltage output control module the voltage controlling output 0 ~ 10V; Described PL3120 power line carrier module receive on power line external device transmission signal to single-chip microcomputer time, after single-chip microcomputer process, deal with data is transferred in 485 buses by described RS485 communication module, or be transferred on serial bus by described RS232 communication module, or turn serial port module circuit transmission to PC or be transferred on Ethernet by described TCP/IP; When the signal that described FT3120 twisted-pair feeder module receives outside device transmission on twisted-pair feeder is to single-chip microcomputer, after single-chip microcomputer process, deal with data is transferred in 485 buses by described RS485 communication module, or be transferred on serial bus by described RS232 communication module, or turn serial port module circuit transmission to PC or be transferred on Ethernet by described TCP/IP; Thus the data realizing gathering are transmitted with carrying out various ways; Described PL3120 power line carrier module comprises: PL3120 electric power line carrier chip, the first crystal oscillating circuit, the first reset circuit, signal of communication receiving circuit and signal of communication transtation mission circuit; Described first crystal oscillating circuit, the first reset circuit, signal of communication receiving circuit, signal of communication transtation mission circuit are all connected with described PL3120 electric power line carrier chip; 10th pin of described PL3120 electric power line carrier chip, the 12nd pin are connected with the 26th pin of described STC10F08XE single-chip microcomputer, the 25th pin respectively; The data message collected is passed to single-chip microcomputer by described Smoke Sensor input module and infrared sensor input module, after single-chip microcomputer process, is transmitted by the data message after process by the signal of communication transtation mission circuit of PL3120 power line carrier module; The signal of communication receiving circuit of described PL3120 power line carrier module receives the signal of the external device transmission on power line to single-chip microcomputer.
2. the acquisition server data of collection being carried out various mode transmission according to claim 1, is characterized in that: described signal of communication receiving circuit comprises three rank high pass filter and coupling inductors; One end of described coupling inductor is connected with external circuit net, and the other end is connected with described PL3120 electric power line carrier chip; Described three rank high pass filters are connected with described PL3120 electric power line carrier chip.
3. the acquisition server data of collection being carried out various mode transmission according to claim 1, is characterized in that: described signal of communication transtation mission circuit comprises the amplifier, initiatively low pass filter and the second-order low-pass filter that have two emitter and export; Described active low pass filter, the amplifier with the output of two emitter and second-order low-pass filter connect successively; Described second-order low-pass filter is connected with described PL3120 electric power line carrier chip.
4. the acquisition server data of collection being carried out various mode transmission according to claim 1, is characterized in that: described FT3120 twisted-pair feeder module comprises: FT3120 twisted-pair feeder chip, the second crystal oscillating circuit, the second reset circuit, data transmission/reception circuit and data sending/receiving testing circuit; Described second crystal oscillating circuit, the second reset circuit, data transmission/reception circuit, data sending/receiving testing circuit is all connected with described FT3120 twisted-pair feeder chip;
When sending after the described FT3120 twisted-pair feeder chip data received on Ethernet process, described data sending/receiving testing circuit has detected that data send, then the LED of data sending/receiving testing circuit transmitting terminal can light, and sends to external equipment after data process by described FT3120 twisted-pair feeder chip by described data transmission/reception circuit through twisted-pair feeder; When described FT3120 twisted-pair feeder chip receives the data of external equipment transmission by described data transmission/reception circuit, described data sending/receiving testing circuit detects the data of reception, then the LED of data sending/receiving testing circuit receiving terminal can light.
5. the acquisition server data of collection being carried out various mode transmission according to claim 4, is characterized in that: described data transmission/reception circuit comprises: first clamp circuit be made up of diode D2B and diode D2A, second clamp circuit be made up of diode D1B and diode D1A, communications transformer FT-X1, the 3rd clamp circuit be made up of diode D102B and diode D101A, the 4th clamp circuit, electric capacity C101, electric capacity C102 and the binding post JP101 be made up of diode D102A and diode D101B; 20th pin of described FT3120 twisted-pair feeder chip, the 19th pin are all connected with the 5th pin of communications transformer FT-X1, the 6th pin respectively through the first clamp circuit, the second clamp circuit; 2nd pin, the 1st pin of described communications transformer FT-X1 are all connected with one end of described electric capacity C101, one end of electric capacity C102 respectively through the 3rd clamp circuit, the 4th clamp circuit; The other end of described electric capacity C101 is connected with the 2nd pin of described binding post JP101; The other end of described electric capacity C102 is connected with the 1st pin of described binding post JP101; Described 3rd clamp circuit, the 4th clamp circuit all connect signal ground.
6. the acquisition server data of collection being carried out various mode transmission according to claim 4, is characterized in that: described data sending/receiving testing circuit comprises: resistance R215, resistance R216, resistance R217, resistance R218, resistance R219, resistance R55, resistance R56, electric capacity C209, electric capacity C210, diode D216A, diode D216B, comparator U204A, comparator U204B, inverter U203A, inverter U203B, receiving terminal LED 1 and transmitting terminal LED 2; 17th pin of described FT3120 twisted-pair feeder chip is connected with the negative pole of described diode D216A, the positive pole of diode D216B respectively through resistance R215; The positive pole of described diode D216A is connected with one end of described electric capacity C209, one end of resistance R216, the positive pole of comparator U204A respectively, and the other end of described electric capacity C209, the other end of resistance R216 all connect power module; The negative pole of described diode D216B is connected with one end of described electric capacity C210, one end of resistance R217, the negative pole of comparator U204B respectively, and the other end of described electric capacity C210, the other end of resistance R217 all connect signal ground; The negative pole of described comparator U204A is connected with power module through described resistance R218, and the positive pole of described comparator U204B is connected with power module through described resistance R219, and the negative pole of described comparator U204A is connected with the positive pole of comparator U204B; 1st pin of described comparator U204A is connected with the positive pole of receiving terminal LED 1 through inverter U203A, resistance R35; 7th pin of described comparator U204B is connected with the positive pole of transmitting terminal LED 2 through inverter U203B, resistance R56; The equal connection signal ground of the negative pole of described receiving terminal LED 1, the negative pole of transmitting terminal LED 2.
7. the acquisition server data of collection being carried out various mode transmission according to claim 1, is characterized in that: described Smoke Sensor input module comprises: resistance R17, resistance R18, resistance R19, electric capacity C6, optical coupler O4 and binding post J11; 24th pin of described STC10F08XE single-chip microcomputer is connected with one end of described optical coupler O4, resistance R18, one end of electric capacity C6 respectively, the other end of described resistance R18, another termination signal ground of electric capacity C6; The one termination optical coupler O4 of described resistance R17, another termination power module; The one termination optical coupler O4 of described resistance R19, the other end is connected with the 2nd pin of binding post J11; The 3rd equal connection signal ground of pin of described optical coupler O4 and binding post J11;
Described infrared sensor input module comprises: resistance R20, resistance R21, resistance R22, electric capacity C7, optical coupler O5 and binding post J12; 23rd pin of described STC10F08XE single-chip microcomputer is connected with one end of described optical coupler O5, resistance R21, one end of electric capacity C7 respectively, the other end of described resistance R21, another termination signal ground of electric capacity C7; The one termination optical coupler O4 of described resistance R20, another termination power module; The one termination optical coupler O5 of described resistance R22, the other end is connected with the 2nd pin of binding post J12; The 3rd equal connection signal ground of pin of described optical coupler O5 and binding post J12.
8. the acquisition server data of collection being carried out various mode transmission according to claim 1, is characterized in that: described RS485 communication module comprises: resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, electric capacity C5, high speed photo coupling O1, high speed photo coupling O2, high speed photo coupling O3, differential line transceiver U3 and binding post J7; 7th pin of described STC10F08XE single-chip microcomputer, the 6th pin, the 8th pin are connected with described high speed photo coupling O3, high speed photo coupling O1, high speed photo coupling O2 respectively; Described resistance R5 one end, resistance R6 one end, resistance R7 one end all connect power module, and the resistance R5 other end, the resistance R6 other end, the resistance R7 other end are connected with high speed photo coupling O3, high speed photo coupling O1, high speed photo coupling O2 respectively; Described high speed photo coupling O3 is connected with high speed photo coupling O1 through resistance R8; Described resistance R10 connects high speed photo coupling O2, and resistance R9 connects high speed photo coupling O1, and described high speed photo coupling O3, high speed photo coupling O1, high speed photo coupling O2 connect the 1st pin, the 3rd pin, the 4th pin of differential line transceiver U3 respectively; Described differential line transceiver U3 the 2nd pin and the 3rd pins in parallel; 6th pin of described differential line transceiver U3 is connected with the 2nd pin of binding post J7 through resistance R2; 7th pin of described differential line transceiver U3 is connected with the 1st pin of binding post J7 through resistance R1; Be parallel with resistance R11 between described resistance R1 and resistance R2, the 6th pin of described differential line transceiver U3 is connected with the 5th pin of differential line transceiver U3 through resistance R3, electric capacity C5; 7th pin of described differential line transceiver U3 is connected with signal ground through resistance R4;
Described RS232 communication module comprises: serial ports binding post J8, MAX232ACPE chip, electric capacity C3, electric capacity C4; Described MAX232ACPE chip the 1st pin is connected with the 3rd pin of MAX232ACPE chip through described electric capacity C3; MAX232ACPE chip the 4th draws foot meridian capacitor C4 and is connected with the 5th pin of MAX232ACPE chip; Described MAX232ACPE chip the 13rd pin is connected with the 7th pin of serial ports binding post J8, MAX232ACPE chip the 14th pin is connected with the 6th pin of serial ports binding post J8, described MAX232ACPE chip the 11st pin is connected with the 11st pin of STC10F08XE single-chip microcomputer, and MAX232ACPE chip the 12nd pin is connected with the 10th pin of STC10F08XE single-chip microcomputer.
9. the acquisition server data of collection being carried out various mode transmission according to claim 1, it is characterized in that: described three tunnel relay control module are made up of three output control circuits, and described each output control circuit includes: relay J 6A, resistance R40, resistance R41, resistance R42, resistance R43, resistance R44, resistance R45, triode Q1, triode Q2 and diode D5; Described resistance R42 is connected with the base stage of triode Q1 and one end of resistance R43 respectively; Another termination signal ground of this resistance R43; The emitter of described triode Q1 is connected with signal ground; The collector electrode of this triode Q1 is connected with the coil K1 of relay J 6A, the positive pole of diode D5, one end of resistance R41 respectively; The other end of this resistance R41 is connected with the base stage of triode Q2; The negative pole of described diode D5, the coil K1 of relay J 6A all connect power module; One end of described resistance R40 is connected with the negative pole of diode D5, and the other end is connected with the base stage of triode Q2; The emitter of described triode Q2 is connected with power module, and the collector electrode of this triode Q2 is connected with signal ground with resistance R45 through resistance R44; The resistance R42 of described three output control circuits is connected with the 1st pin of STC10F08XE single-chip microcomputer, the 3rd pin, the 2nd pin respectively;
Described voltage output control module comprises analog-digital chip PCF8591, operational amplifier LM358AH, resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, binding post J10; One end of described resistance R15, one end of resistance R16 are all connected with power module, and the other end of resistance R15, the other end of resistance R16 connect the 10th pin, the 9th pin connection of analog-digital chip PCF8591 respectively; 10th pin of described analog-digital chip PCF8591, the 9th pin are connected with the 28th pin of STC10F08XE single-chip microcomputer, the 27th pin respectively; 15th pin of described analog-digital chip PCF8591 is connected with the 3rd pin of operational amplifier LM358AH through resistance R12,2nd pin of operational amplifier LM358AH connects signal ground through resistance R14,1st pin of operational amplifier LM358AH is connected with the 2nd pin of binding post J10, and described resistance R13 is parallel to the 1st pin and the 2nd pin of described operational amplifier LM358AH; 1st pin of described binding post J10 connects signal ground;
Described TCP/IP turns serial port module circuit and comprises: reset switch SW11, electric capacity C23, Network Interface Module J13, resistance R24, resistance R25, resistance R26, resistance R27, resistance R28, resistance R29; Described reset switch SW11 is connected with the 3rd pin of described Network Interface Module J13 with after electric capacity C23 parallel connection; 15th pin of Network Interface Module J13 is connected with the 12nd pin of Network Interface Module J13 through resistance R24; Described Network Interface Module J13 the 14th pin is connected with Network Interface Module J13 the 7th pin through resistance R25; One end of described resistance R28, one end of resistance R29 all connect power module, and the other end of resistance R28, the other end of resistance R29 are connected with resistance R26, resistance R27 respectively; Described Network Interface Module J13 the 11st pin is connected with the 21st pin of STC10F08XE single-chip microcomputer through resistance R26, and described Network Interface Module J13 the 10th pin is connected with the 22nd pin of STC10F08XE single-chip microcomputer through resistance R27.
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