CN103777605A - Tank field monitoring and early warning mainframe and monitoring and early warning method thereof - Google Patents
Tank field monitoring and early warning mainframe and monitoring and early warning method thereof Download PDFInfo
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Abstract
The invention relates to a tank field monitoring and early warning mainframe and a monitoring and early warning method of the tank field monitoring and early warning mainframe, and belongs to the field of safety production monitoring. The mainframe comprises a mainframe case, a safety parameter processing circuit board, a video processing circuit board, a safety parameter input and output interface board, a video input and output interface board, a computer power supply and an SATA hard disk, and further comprises a liquid crystal screen embedded in the upper panel of the mainframe case, a liquid displayer, a mouse and a keyboard. The safety parameter processing circuit board, the video processing circuit board, the safety parameter input and output interface board, the video input and output interface board, the computer power supply and the SATA hark disk are arranged in the mainframe case. The liquid crystal displayer, the mouse and the keyboard are connected with the mainframe. The method includes the step of collection, display and storage of safety parameters and videos of a tank field, the step of storage tank liquid level over-limit alarm and safety interlock control, the step of oil transportation pump house combustible gas over-limit alarm and safety interlock control, and the step of storage tank temperature and tank field combustible gas concentration over-limit alarm. According to the tank field monitoring and early warning mainframe and the monitoring and early warning method of the tank field monitoring and early warning mainframe, the function of multipath parameter collection and the function of multipath video collection are integrated, and therefore the function of collecting and processing on-site safety parameters and images in a centralized mode, the function of linkage alarm, the function of network remote transmission, the function of safety interlock control and other functions are achieved. The tank field monitoring and early warning mainframe and the monitoring and early warning method of the tank field monitoring and early warning mainframe have the advantages of having the oil tank field safety monitoring seamless integration function and being high in cost-performance ratio.
Description
Technical field
The invention belongs to safety production monitoring technical field, particularly adopt for the on-the-spot multichannel security parameter in tank field and video
Tank field monitoring and early warning main frame and the monitoring and early warning method thereof of collection, parameter and video alarm interlock and safety interlocking control.
Technical background
In recent years, fire in oil pot site explosion accident in all parts of the country constantly occurs, and causes fortune loss and casualties.Culprit has management and human factor, but not set up the safety monitoring system that oil tank Dangerous and Harmful Factors is carried out to monitoring and early warning be the major reason of Frequent Accidents in tank station.For this reason, country has promulgated " hazardous chemical major hazard source security monitoring current techique standard " (AQ3035-2010) and " hazardous chemical major hazard source tank field site safety monitoring equipment arranges standard " (AQ3036-2010) two standards, the major hazard sources such as tank station are set up to safety monitoring system and proposed concrete technical requirement: to tank station significant points video, oil tank level, temperature, the security parameters such as pressure, and tank field and pump house combustable gas concentration etc. are monitored in real time, and realize security parameter and video interlink and report to the police, the functions such as safety interlocking control, take precautions against storage tank fire, the generation of the accidents such as flat tank and roof fall, ensure tank field safe operation.
For this technical need, lack in the market video and security parameter are gathered simultaneously, and realize the professional equipment of interlink warning control.And due to existing 4～20mA signals of security parameter signal such as tank station liquid level, temperature, pressure, also there is the signal of following 485 bus protocols, also has switching value signal, demand motive quick action emergency valve, transfer pump, ventilation equipment etc. simultaneously, therefore require this watch-dog can access the signal of number of different types, and can produce switching value signal.Current most tank stations safety monitoring system is to obtain respectively image scene and security parameter by independently video capture device and parameter acquisition equipment, by back-end software, video and security parameter is combined.It is higher that this mode implements cost, and real-time is poor, is unfavorable for the needs of tank field security monitoring.
Summary of the invention
The object of the invention is the weak point for overcoming prior art, a kind of tank field monitoring and early warning main frame and monitoring and early warning method thereof are proposed, the present invention integrates multichannel parameter acquisition and two kinds of functions of multi-channel video capturing, realizes the functions such as concentrated acquisition process, interlink warning, network remote-transmission and the safety interlocking control of site safety parameter and image.There is the seamless integrated and feature that cost performance is good of tank station security monitoring.
The tank field monitoring and early warning main frame that the present invention proposes, it is characterized in that: this main frame comprises cabinet and is arranged on the security parameter treatment circuit plate in cabinet, video processing circuit board, security parameter input/output interface board, video input output interface plate, computer power supply and SATA hard disk, also comprise the liquid crystal display that is inlaid in cabinet top panel, the liquid crystal display being connected with main frame, mouse and keyboard, its circuit connecting relation is: described security parameter treatment circuit plate is connected with the DC output end of computer power supply by power lead, be connected with video processing circuit board by serial ports, by winding displacement and security parameter input/output interface board, liquid crystal display connects, be connected with SATA hard disk by hard disk line, described video acquisition treatment circuit plate is connected with the DC output end of computer power supply by power lead, is connected with video input output interface plate by winding displacement, is connected with SATA hard disk by hard disk line, described liquid crystal display is connected with the VGA interface of cabinet rear panel by VGA line.
Described security parameter treatment circuit plate, comprise security parameter processing controller, SDRAM, FLASH, ethernet controller, 16 path analoging switch, AD conversion chip, SATA extended chip, serial port extended chip, photoelectrical coupler, solid-state relay and SATA hard disk, its circuit connecting relation is: security parameter processing controller is connected with ethernet controller by Ethernet interface, by bus and SDRAM, FLASH, liquid crystal display is connected, be connected with serial port extended chip by UART interface, by GPIO interface and photoelectrical coupler, solid-state relay, 16 path analoging switch are connected, be connected with SATA extended chip by bus, described 16 path analoging switch are connected with AD conversion chip, and AD conversion chip is connected with security parameter processing controller SPI interface, described SATA hard disk is connected with SATA extended chip.
Described video acquisition treatment circuit plate, comprise ARM Video processing controller, SDRAM, FLASH, ethernet controller, four road D1 video and audio codings, SATA extended chip, solid-state relay and SATA hard disk, its circuit connecting relation is: Video processing controller is connected with ethernet controller by Ethernet interface, be connected with USB interface chip with SDRAM, FLASH by bus, be connected with solid-state relay by GPIO interface, be connected with SATA extended chip, 4 Ge Si road D1 video and audio codings by bus; Described SATA hard disk is connected with SATA extended chip.
Described security parameter input/output interface board, comprises 16 analog input interfaces, 16 switch value input interface, 8 parameter warning output interfaces, 1 video alarm output interface, 2 parameters R S485 bus interface, 1 road video 485 bus interface, 2 RS232 interfaces, 16 D1 video input interfaces, 16 D1 audio input interfaces, 2 RJ45 interfaces, 1 VGA interface and 2 USB interface.
Described video input output interface plate, comprise 1 video alarm output interface, video 485 bus interface, 1 VGA interface, 1 RJ45 interface, 16 audio input interfaces and 16 video input interfaces, its circuit connecting relation is: video alarm output interface is connected with solid-state relay, video 485 bus interface are connected with the GPIO interface of Video processing controller, VGA interface is connected with the bus of Video processing controller, RJ45 interface is connected with ethernet controller, 16 audio input interfaces, 16 video input interfaces are connected with 4 Ge Si road D1 video and audio codings, VGA interface is connected with liquid crystal display, 2 USB interface respectively with keyboard, mouse is connected.
Described cabinet adopts 1U standard PC case, institute's image data information is shown by the liquid crystal display that is inlaid in cabinet top panel, video information shows by external liquid crystal display, by the thin film switch panel being attached on liquid crystal display, name attribute, early warning and the alarm threshold value of access signal is arranged.
Described tank field monitoring and early warning main frame, it is characterized in that thering is WEB Server function, access this main frame by its IP address, can, by the real-time parameter of its monitoring of web page browsing and video image information, also can carry out long-range setting to the running parameter such as early warning and alarm threshold value of monitoring parameter.
The present invention proposes to adopt the monitoring and early warning method of above-mentioned main frame, comprising:
1) tank field security parameter and video acquisition, demonstration and storage:
Monitoring and early warning main frame reads the signal of analog input interface, switch value input interface and RS485 bus interface, calculates each security parameter information according to default signal limit value, these information is shown on liquid crystal display, and stores on hard disk; Monitoring and early warning main frame reads each road camera signal by video and audio coding, forms digital video signal after compressed encoding, and by the embedded client software of main frame, with 16 split screen form display video signals, Bing Jiangge road vision signal stores on hard disk;
2) tank level overload alarm and safety interlocking control:
Monitoring and early warning main frame gathers tank level sensor signal, and the information after AD converter conversion is delivered in security parameter processing controller, and security parameter processing controller compares the liquid level threshold value of this information and setting; When tank level is during higher than liquid level percent high threshold value or lower than liquid level lower threshold, main frame by parameter warning output interface to the audible-visual annunciator being connected with main frame, with the tank connected quick action emergency valve of this storage and oil pump controller output high level signal, thereby starting audible-visual annunciator reports to the police, and in liquid crystal display, recall separately monitoring this storage tank video, closed down with the tank connected quick action emergency valve of this storage and transfer pump, stopped oil plant conveying operations simultaneously;
3) pump room inflammable gas overload alarm and safety interlocking control:
Monitoring and early warning main frame gathers combustible gas detector signal, and the information after AD converter conversion is delivered in security parameter processing controller, and security parameter processing controller compares the combustable gas concentration threshold value of this information and setting; When combustable gas concentration in pump room higher than set concentration threshold time, main frame is the controller output high level signal to explosion venting equipment in the audible-visual annunciator being connected with main frame, pump room by parameter warning output interface, thereby starting the audible-visual annunciator being connected with main frame reports to the police, and in liquid crystal display, recall the video of monitoring this pump house, start the explosion venting equipment in pump house simultaneously; When combustable gas concentration is during lower than alarm threshold value, main frame is the controller output low level signal to explosion venting equipment in pump room by parameter warning output interface, thereby closes down explosion venting equipment;
4) tank temperature and tank field combustable gas concentration overload alarm:
Monitoring and early warning main frame gathers tank temperature sensor and gathers combustible gas detector signal, and the tank temperature obtaining after AD conversion and tank field combustable gas concentration information compare with tank temperature threshold value, the tank field combustable gas concentration threshold value set respectively; When tank temperature and tank field combustable gas concentration higher than set threshold value time, main frame is exported high level signal by parameter warning output interface to the audible-visual annunciator being connected with main frame, thereby starting audible-visual annunciator reports to the police, in liquid crystal display, recall the video of this storage tank of monitoring or tank field, remind field staff to confirm by video and carry out emergency disposal simultaneously.
Technical characterstic of the present invention and effect:
The present invention is by acquisition process and safety analysis to the security parameters such as tank level, temperature, pressure, tank field and pump house combustable gas concentration and tank field video information, realize tank field security parameter and video interlink and report to the police, remind field staff to note and carry out emergency disposal; In the time that tank level transfinites, realize the plant-wide emergency shutdown interlocked control of quick action emergency valve and the storage tank transfer pump of storage tank association, prevent the flat tank of storage tank or roof fall accident; In the time that pump house combustable gas concentration transfinites, realize the emergency start interlocked control of pump house ventilation equipment, take precautions against fire and explosion accident, ensure tank field safe operation.
Monitoring early warning and safety and interlocked control that the present invention is tank field provide total solution, thereby particularly serious serious accident in prevent and avoid tank field operation ensures the people's life and property safety better.
Accompanying drawing explanation
Fig. 1 is general structure block diagram of the present invention.
Fig. 2 is each several part structural drawing of the present invention.
Fig. 3 is rig-site utilization block diagram of the present invention
Embodiment
The tank field monitoring and early warning main frame of the present invention design by reference to the accompanying drawings and embodiment be described in detail as follows:
The general structure of the embodiment of the present invention as shown in Figure 1, this main frame comprises cabinet and is arranged on the security parameter treatment circuit plate in cabinet, video processing circuit board, security parameter input/output interface board, video input output interface plate, computer power supply and SATA(serial hardware driver interface based on industry standard) hard disk etc., also comprise the liquid crystal display that is inlaid in cabinet top panel, the liquid crystal display being connected with main frame, mouse and keyboard, its circuit connecting relation is: described security parameter treatment circuit plate is connected with the DC output end of computer power supply by power lead, be connected with video processing circuit board by serial ports, by winding displacement and security parameter input/output interface board, liquid crystal display connects, be connected with SATA hard disk by hard disk line, described video acquisition treatment circuit plate is connected with the DC output end of computer power supply by power lead, is connected with video input output interface plate by winding displacement, is connected with SATA hard disk by hard disk line, described liquid crystal display is by VGA(Video Graphics Array) line is connected with the VGA interface of cabinet rear panel.
The physical construction annexation of the present embodiment is: described computer power supply is screwed on the base plate of one jiao of cabinet; Described security parameter treatment circuit plate and video acquisition treatment circuit plate are screwed on cabinet inner bottom plating; Described security parameter input/output interface board and video input output interface plate are screwed on the interior postnotum of cabinet; The interface device of security parameter input/output interface board and video input output interface plate is exposed at outside cabinet through postnotum; Described SATA hard disk is arranged on the support being fixed on chassis backplane.
The concrete composition of each critical piece of the present embodiment is respectively described below:
Described security parameter treatment circuit plate concrete structure, as shown in Fig. 2 dotted line frame I, comprise security parameter processing controller, SDRAM, FLASH, ethernet controller, 16 path analoging switch, AD conversion chip, SATA extended chip, serial port extended chip, photoelectrical coupler and solid-state relay and SATA hard disk etc., its circuit connecting relation is: security parameter processing controller is connected with ethernet controller by Ethernet interface, by bus and SDRAM, FLASH, liquid crystal display is connected, be connected with serial port extended chip by UART interface, by GPIO interface and photoelectrical coupler, solid-state relay, 16 path analoging switch are connected, be connected with SATA extended chip by bus, described 16 path analoging switch are connected with AD conversion chip, and AD conversion chip is connected with security parameter processing controller SPI interface, described SATA hard disk is connected with SATA extended chip.
Described video acquisition treatment circuit plate, as shown in Fig. 2 dotted line frame II, comprise ARM Video processing controller, SDRAM, FLASH, ethernet controller, four road D1 video and audio codings, SATA extended chip, solid-state relay and SATA hard disk etc., its circuit connecting relation is: Video processing controller is connected with ethernet controller by Ethernet interface, be connected with USB interface chip with SDRAM, FLASH by bus, be connected with solid-state relay by GPIO interface, be connected with SATA extended chip, 4 Ge Si road D1 video and audio codings by bus; Described SATA hard disk is connected with SATA extended chip.
Described security parameter input/output interface board, as shown in Fig. 2 dotted line frame III, comprise 16 analog input interfaces, 16 switch value input interface, 8 parameter warning output interfaces, 2 parameters R S485 bus interface, 2 RS232 interfaces and 1 RJ45 interface, its circuit connecting relation is: 16 analog input interfaces are connected with 16 path analoging switch, 16 switch value input interface are connected with photoelectrical coupler, 8 parameter warning output interfaces are connected with solid-state relay, 2 parameters R S485 bus interface, 2 RS232 interfaces are connected with serial port extended chip, RJ45 interface is connected with ethernet controller.
Described video input output interface plate, as shown in Fig. 2 dotted line frame IV, comprise 1 video alarm output interface, video 485 bus interface, 1 VGA interface, 1 RJ45 interface, 16 audio input interfaces and 16 video input interfaces, video alarm output interface is connected with solid-state relay, video 485 bus interface are connected with the GPIO interface of Video processing controller, VGA interface is connected with the bus of Video processing controller, RJ45 interface is connected with ethernet controller, 16 audio input interfaces, 16 video input interfaces are connected with 4 Ge Si road D1 video and audio codings, VGA interface is connected with liquid crystal display, 2 USB interface respectively with keyboard, mouse is connected.
Specific implementation and the function of the each device of the present embodiment are respectively described below:
The present embodiment security parameter processing controller adopts the arm processor AT91RM9200 of atmel corp, important technological parameters: dominant frequency 180MHz, 16KB internal SRAM, the ROM of 128KB.
The SDRAM of the present embodiment security parameter processing controller institute carry adopts the 64M SDRAM of SAMSUNG company chip K4S641632K, and the FLASH of institute's carry adopts the 128MB NAND Flash chip K9F1G08 of SAMSUNG company.
The present embodiment Video processing controller adopts the arm processor S3C2440A of Samsung, important technological parameters: dominant frequency 400MHz, and the highest 533Mhz, possesses I-Cache and the 16KBDCache of 16KB.
The SDRAM of the present embodiment video Video processing controller institute carry adopts the 256MB SDRAM chip K4S561632N-LC60 of SAMSUNG company, important technological parameters: capacity, 256MB.The FLASH of institute's carry adopts the 512MB NAND Flash chip K9F4G08 of SAMSUNG company, important technological parameters: capacity, 512MB.
Two ethernet controllers of the present embodiment all adopt 10/100M self-adaptation ethernet mac controller DM9000AEP, important technological parameters: integrated 10/100M self-adaptation transceiver, dorsal support die pressing type half-duplex flow control mode, the full-duplex mode of IEEE802.3x flow control, 4K double word SRAM, support 4 general input/output ports, compatible 3.3v and 5.0v input and output voltage.
The present embodiment liquid crystal display adopts Chinese word library LCD MODULE CM320240-7SLYB, important technological parameters: support 2 pages of display modes, built-in two 4.8KB display random access memories, provide full-shape (16 × 16) and half-angle (8 × 16) word display mode.
The present embodiment 4 road D1 video and audio codings adopt the four-way D1 of Vweb company single-chip codec VW5010, important technological parameters: support time division multiplex (TDM) pattern, can carry out 7.5 Zheng 16 road D1 form NTSC Image Codings per second or 6.25 Zheng 16 road D1 form PAL Image Codings per second, can receive MPEG-1, 2, 4 or the H.263 video bit stream input of form, changed into ITUR.BT-656 video format, also can be by MPEG-1Layer1, Layer2, MP3, AAC, AC-3, G.711, G.726 after decompressing, audio bitstream input or G.729 exports from IS2 interface.
Two SATA extended chips of the present embodiment all adopt the twoport SATA controller SiI3512 of Silicon Image company, important technological parameters: message transmission rate, 1.5Gbps.
The serial port extended chip of the present embodiment adopts the PIC16C554 of Microchip company, important technological parameters: operating voltage, 2.5～5.5V; Message transmission rate, 20MHz; Can expand 4 road serial ports.
The present embodiment 16 path analoging switch adopt the AD7507 chip of Analog Devices company, important technological parameters: leakage current, maximum 1nA～5nA; Conducting resistance ,≤300 Ω.
The present embodiment AD conversion chip adopts the analog to digital converter AD9430 of AD company, important technological parameters: 3.3V power supply, 12 AD conversions, can provide CMOS and LVDS two kinds of interface modes, the synchronous input of data and data clock output can be provided, there is fabulous linear characteristic.
The present embodiment photoelectrical coupler adopts the photoelectrical coupler HCPL-2630 of Avago company, important technological parameters: port number, 2Channel; Maximum baud rate, 10MBps; Maximum forward diode voltage, 1.75V, maximum reverse diode voltage, 5V; Maximum power dissipation, 60mW.
Two solid-state relays of the present embodiment all adopt the solid-state relay ASSR-401C of Avago company, important technological parameters: input drive current, 2mA; Switching speed, <0.5ms.
The present embodiment liquid crystal display adopts Samsung S27C750P, important technological parameters: screen size, 27 inches; Dynamic contrast, 1,000,000: 1; Optimum resolution, 1920x1080; GTG, 5ms.
The present embodiment computer power supply adopts Jin He field dragon despot 700ELA, important technological parameters: rated power, 600W; Fan type, the two ball bearing fans of 14cm; Defencive function, overvoltage protection OVP; Exchange input, 220V, 5A, 50Hz; 3.3V output current, 24A; 5V output current, 24A; 12V output current, 30A.
Two SATA hard disks of the present embodiment adopt Seagate ST2000DM001 hard disk, important technological parameters: capacity, 2000GB; Interface type, SATA3.0; Rotating speed, 7200rpm; Buffer memory, 64MB; Interface rate, 6Gb/ second.
The present embodiment USB interface chip adopts the CY7C68013 of Cypress semiconductor company, important technological parameters: monolithic integration USB 2.0 transceivers, SIE and enhancement mode 8051 microprocessors; Clock rate, 48MHz; Integrated I2C compatible controller, operating rate 100 or 400kHz.
The present embodiment keyboard adopts IBM keyboard 40K9584, important technological parameters: interface, USB; Form, full size keyboard.
The present embodiment mouse adopts IBM mouse 40K9201, important technological parameters: interface, USB; Type, 3 key photoelectricity.
Described analog input interface, switch value input interface, video alarm output interface, video 485 bus interface and parameter warning output interface adopt the directly welded connection terminal LG126V-5.0/5.08 of Shanghai You Le Electric Applicance Co., Ltd, important technological parameters: connection type, directly welded; Line ball mode, screw.
Described parameters R S485 bus interface and RS232 interface adopt 9 needle serial ports, important technological parameters: model, 9P public affairs; Contact element material, copper; Pin number, 9.
Described RJ45 interface adopts the RJ45 network connector of Dongguan Xun Shuo Electronic Science and Technology Co., Ltd., important technological parameters: interface type, RJ45.
Described VGA interface adopts the standard VGA interface of Zhong Yifeng Electronics Co., Ltd. of Shenzhen, important technological parameters: model, mother 15P; Contact element material, copper; Core number, 15.
Described audio input interface, video input interface adopt standard BNC connector, important technological parameters: characteristic impedance, 75 Ω, frequency range, 0～2GHz.
In actual use, as shown in Figure 3, multiple described monitoring and early warning main frames can be set in district to be monitored, each monitoring and early warning main frame at least can be to the parameter of 8 storage tanks and video acquisition, safety equipment are monitored simultaneously, parameter and video acquisition, safety equipment are included in installation liquid level sensor and temperature sensor in each storage tank, an explosion-proof video camera that monitors tank top is set, a quick action emergency valve is installed with storage on tank connected oil pipeline, in tank field, every 15 meters, a combustable gas concentration detector is set, an explosion venting equipment is set in pump room, the annexation of monitoring and early warning main frame and parameter and video acquisition, safety equipment is: monitoring and early warning main frame is connected with tank level sensor, temperature sensor and combustable gas concentration detector by analog input interface or RS485 bus interface, be connected with explosion-proof video camera by audio-video interface, be connected with the controller of stop valve, oil pump and explosion venting equipment by parameter warning output interface.
When tank field storage tank quantity is during more than 8, can dispose multiple tank fields monitoring and early warning main frame according to storage tank quantity and position, subregion is to tank field implementing monitoring, finally by the network switch, security parameter and video information are pooled to the monitoring and early warning server of tank field Surveillance center, security parameter and the video of monitoring and early warning server to tank field implemented Centralized Monitoring early warning.This tank field monitoring and early warning main frame has WEB Server function, accesses this main frame by its IP address, can, by the real-time parameter of its monitoring of web page browsing and video image information, also can carry out long-range setting to the running parameter such as early warning and alarm threshold value of monitoring parameter.
The present invention proposes to adopt the monitoring and early warning method of above-mentioned main frame, comprising:
1) tank field security parameter and video acquisition, demonstration and storage
Monitoring and early warning main frame reads the signal of analog input interface, switch value input interface and RS485 bus interface, calculates each security parameter information according to default signal limit value, these information is shown on liquid crystal display, and stores on hard disk; Monitoring and early warning main frame reads each road camera signal by video and audio coding, forms digital video signal after compressed encoding, and by the embedded client software of main frame, with 16 split screen form display video signals, Bing Jiangge road vision signal stores on hard disk;
2) tank level overload alarm and safety interlocking control
Monitoring and early warning main frame gathers tank level sensor information, and the signal after AD converter conversion is delivered in security parameter processing controller, and security parameter processing controller compares this signal and the liquid level threshold value being stored in wherein; When tank level is higher than the liquid level percent high threshold value of setting or during lower than liquid level lower threshold, main frame by parameter warning output interface to the audible-visual annunciator being connected with main frame, with the tank connected quick action emergency valve of this storage and oil pump controller output high level signal, thereby starting audible-visual annunciator reports to the police, and in liquid crystal display, recall separately monitoring this storage tank video, closed down with the tank connected quick action emergency valve of this storage and transfer pump, stopped oil plant conveying operations simultaneously;
3) pump room inflammable gas overload alarm and safety interlocking control
Monitoring and early warning main frame gathers combustible gas detector concentration information, after AD conversion, compares with combustable gas concentration threshold value; When combustable gas concentration in pump room higher than set concentration threshold time, main frame is the controller output high level signal to explosion venting equipment in the audible-visual annunciator being connected with main frame, pump room by parameter warning output interface, thereby starting the audible-visual annunciator being connected with main frame reports to the police, and in liquid crystal display, recall the video of monitoring this pump house, start the explosion venting equipment in pump house simultaneously; When combustable gas concentration is during lower than alarm threshold value, main frame is the controller output low level signal to explosion venting equipment in pump room by parameter warning output interface, thereby closes down explosion venting equipment;
4) tank temperature and tank field combustable gas concentration overload alarm
Monitoring and early warning main frame gathers tank temperature sensor information, after AD conversion, compares respectively with temperature threshold, tank field combustable gas concentration threshold value; When tank temperature and tank field combustable gas concentration higher than set threshold value time, main frame is exported high level signal by parameter warning output interface to the audible-visual annunciator being connected with main frame, thereby starting audible-visual annunciator reports to the police, in liquid crystal display, recall the video of this storage tank of monitoring or tank field, remind field staff to confirm by video and carry out emergency disposal simultaneously.
Said method all adopts the program of conventional programming technique establishment pre-stored in the chip of monitoring and early warning main frame, and the various threshold values in the method are the parameter limit value that guarantees each monitored object trouble free service.
Claims (8)
1. a tank field monitoring and early warning main frame, it is characterized in that: this main frame comprises cabinet and is arranged on the security parameter treatment circuit plate in cabinet, video processing circuit board, security parameter input/output interface board, video input output interface plate, computer power supply and SATA hard disk, also comprise the liquid crystal display that is inlaid in cabinet top panel, the liquid crystal display being connected with main frame, mouse and keyboard, its circuit connecting relation is: described security parameter treatment circuit plate is connected with the DC output end of computer power supply by power lead, be connected with video processing circuit board by serial ports, by winding displacement and security parameter input/output interface board, liquid crystal display connects, be connected with SATA hard disk by hard disk line, described video acquisition treatment circuit plate is connected with the DC output end of computer power supply by power lead, is connected with video input output interface plate by winding displacement, is connected with SATA hard disk by hard disk line, described liquid crystal display is connected with the VGA interface of cabinet rear panel by VGA line.
2. tank field as claimed in claim 1 monitoring and early warning main frame, it is characterized in that, described security parameter treatment circuit plate comprises security parameter processing controller, SDRAM, FLASH, ethernet controller, 16 path analoging switch, AD conversion chip, SATA extended chip, serial port extended chip, photoelectrical coupler, solid-state relay and SATA hard disk, its circuit connecting relation is: security parameter processing controller is connected with ethernet controller by Ethernet interface, by bus and SDRAM, FLASH, liquid crystal display is connected, be connected with serial port extended chip by UART interface, by GPIO interface and photoelectrical coupler, solid-state relay, 16 path analoging switch are connected, be connected with SATA extended chip by bus, described 16 path analoging switch are connected with AD conversion chip, and AD conversion chip is connected with security parameter processing controller SPI interface, described SATA hard disk is connected with SATA extended chip.
3. tank field as claimed in claim 1 monitoring and early warning main frame, it is characterized in that, described video acquisition treatment circuit plate, comprise ARM Video processing controller, SDRAM, FLASH, ethernet controller, four road D1 video and audio codings, SATA extended chip, solid-state relay and SATA hard disk, its circuit connecting relation is: Video processing controller is connected with ethernet controller by Ethernet interface, by bus and SDRAM, FLASH is connected with USB interface chip, be connected with solid-state relay by GPIO interface, by bus and SATA extended chip, 4 Ge Si road D1 video and audio codings are connected, described SATA hard disk is connected with SATA extended chip.
4. tank field as claimed in claim 1 monitoring and early warning main frame, it is characterized in that, described security parameter input/output interface board comprises 16 analog input interfaces, 16 switch value input interface, 8 parameter warning output interfaces, 1 video alarm output interface, 2 parameters R S485 bus interface, 1 road video 485 bus interface, 2 RS232 interfaces, 16 D1 video input interfaces, 16 D1 audio input interfaces, 2 RJ45 interfaces, 1 VGA interface and 2 USB interface.
5. tank field as claimed in claim 1 monitoring and early warning main frame, it is characterized in that, described video input output interface plate comprises 1 video alarm output interface, video 485 bus interface, 1 VGA interface, 1 RJ45 interface, 16 audio input interfaces and 16 video input interfaces, its circuit connecting relation is: video alarm output interface is connected with solid-state relay, video 485 bus interface are connected with the GPIO interface of Video processing controller, VGA interface is connected with the bus of Video processing controller, RJ45 interface is connected with ethernet controller, 16 audio input interfaces, 16 video input interfaces are connected with 4 Ge Si road D1 video and audio codings, VGA interface is connected with liquid crystal display, 2 USB interface respectively with keyboard, mouse is connected.
6. tank field as claimed in claim 1 monitoring and early warning main frame, it is characterized in that, described cabinet adopts 1U standard PC case, institute's image data information is shown by the liquid crystal display that is inlaid in cabinet top panel, video information shows by external liquid crystal display, by the thin film switch panel being attached on liquid crystal display, name attribute, early warning and the alarm threshold value of access signal is arranged.
7. tank field as claimed in claim 1 monitoring and early warning main frame, it is characterized in that, there is WEB Server function, access this main frame by its IP address, can, by the real-time parameter of its monitoring of web page browsing and video image information, also can carry out long-range setting to the running parameter such as early warning and alarm threshold value of monitoring parameter.
8. a monitoring and early warning method that adopts main frame described in claim 1, is characterized in that, the method comprises:
1) tank field security parameter and video acquisition, demonstration and storage:
Monitoring and early warning main frame reads the signal of analog input interface, switch value input interface and RS485 bus interface, calculates each security parameter information according to default signal limit value, these information is shown on liquid crystal display, and stores on hard disk; Monitoring and early warning main frame reads each road camera signal by video and audio coding, forms digital video signal after compressed encoding, and by the embedded client software of main frame, with 16 split screen form display video signals, Bing Jiangge road vision signal stores on hard disk;
2) tank level overload alarm and safety interlocking control:
Monitoring and early warning main frame gathers tank level sensor signal, and the information after AD converter conversion is delivered in security parameter processing controller, and security parameter processing controller compares the liquid level threshold value of this information and setting; When tank level is during higher than liquid level percent high threshold value or lower than liquid level lower threshold, main frame by parameter warning output interface to the audible-visual annunciator being connected with main frame, with the tank connected quick action emergency valve of this storage and oil pump controller output high level signal, thereby starting audible-visual annunciator reports to the police, and in liquid crystal display, recall separately monitoring this storage tank video, closed down with the tank connected quick action emergency valve of this storage and transfer pump, stopped oil plant conveying operations simultaneously;
3) pump room inflammable gas overload alarm and safety interlocking control:
Monitoring and early warning main frame gathers combustible gas detector signal, and the information after AD converter conversion is delivered in security parameter processing controller, and security parameter processing controller compares the combustable gas concentration threshold value of this information and setting; When combustable gas concentration in pump room higher than set concentration threshold time, main frame is the controller output high level signal to explosion venting equipment in the audible-visual annunciator being connected with main frame, pump room by parameter warning output interface, thereby starting the audible-visual annunciator being connected with main frame reports to the police, and in liquid crystal display, recall the video of monitoring this pump house, start the explosion venting equipment in pump house simultaneously; When combustable gas concentration is during lower than alarm threshold value, main frame is the controller output low level signal to explosion venting equipment in pump room by parameter warning output interface, thereby closes down explosion venting equipment;
4) tank temperature and tank field combustable gas concentration overload alarm:
Monitoring and early warning main frame gathers tank temperature sensor and gathers combustible gas detector signal, and the tank temperature obtaining after AD conversion and tank field combustable gas concentration information compare with tank temperature threshold value, the tank field combustable gas concentration threshold value set respectively; When tank temperature and tank field combustable gas concentration higher than set threshold value time, main frame is exported high level signal by parameter warning output interface to the audible-visual annunciator being connected with main frame, thereby starting audible-visual annunciator reports to the police, in liquid crystal display, recall the video of this storage tank of monitoring or tank field, remind field staff to confirm by video and carry out emergency disposal simultaneously.
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