CN100394332C - Data acquiring system for controlling system of welder - Google Patents
Data acquiring system for controlling system of welder Download PDFInfo
- Publication number
- CN100394332C CN100394332C CNB2006100240265A CN200610024026A CN100394332C CN 100394332 C CN100394332 C CN 100394332C CN B2006100240265 A CNB2006100240265 A CN B2006100240265A CN 200610024026 A CN200610024026 A CN 200610024026A CN 100394332 C CN100394332 C CN 100394332C
- Authority
- CN
- China
- Prior art keywords
- module
- circuit
- filtering
- power supply
- switching power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The present invention discloses a data acquiring system for controlling systems of welders, which comprises an acquiring circuit module of analog signals, an embedded MCU controlling system module and a single-chip switching power supply module, wherein the output end of the acquiring circuit module of analog signals is connected with the input end of an A/D switching circuit; the acquiring circuit module of analog signals is used for making various analog signals pass through a filtration and a voltage-dividing circuits; then, after the analog signals are selected by a multiplexing circuit, filtration is carried out again and the analog signals are used as stable input signals to be transmitted to the A/D switching circuit; the A/D switching circuit is arranged in the embedded MCU controlling system module and is used for the switch of the analog signals for storing switched data in an RAM for use; the single-chip switching power supply module supplies electricity for the MCU controlling system module and a data acquiring circuit module for ensuring the stability of a power supply. The data acquiring system of the present invention has the advantages of high resistance of interference, high precision, high stability, etc., and has a vital function to the development of a full digital welder.
Description
Technical field
The present invention relates to a kind of data acquisition system (DAS), the data acquisition system (DAS) that specifically a kind of controlling system of welder uses.
Technical background
Along with improving constantly of China's scientific and technological level, state's internal welding machine industry has also begun the overall technology innovation, and one of them main feature is exactly constantly to develop digital welding machine, in order to substitute old simulation welding machine.It is that himself intrinsic superiority is arranged that digital welding machine can replace the simulation welding machine, mainly show as and adopt embedded system control, can realize digital accurate control, intelligent control, the qualitative leap that welding machine is all had at aspects such as welding quality, the scope of application, man-machine interactions.Why digital embedded controlling system of welder can work normally, and the first step is exactly to realize the detection of butt welding machine parameters accurately, timely, and converts digital quantity to and use for embedded MCU.But welding machine is the very strong equipment of a kind of interference, is difficult to stablize, measure accurately needed amount, but also probably in measuring process, cause the system that scurries into that disturbs, cause the running software disorder, cisco unity malfunction, even the nonvolatil destruction of hardware that can cause embedded system.Therefore, the data acquisition system (DAS) of developing a kind of high anti-interference, high-precision and high-stability has important role to the exploitation of digital welding machine.
Summary of the invention
Technical matters to be solved by this invention provides the data acquisition system (DAS) that a kind of high anti-interference, high stability, high precision, extendible controlling system of welder are used, to overcome the above-mentioned defective that prior art exists.
The technical scheme of invention technical solution problem is as follows:
The data acquisition system (DAS) that a kind of controlling system of welder uses is characterized in that, comprises collection of simulant signal circuit module, embedded MCU control system module and single-chip switching power supply module;
The input end of the A/D change-over circuit in the output terminal of described collection of simulant signal circuit module and the embedded MCU control system module links to each other, be used for various simulating signals through filtering, bleeder circuit, after selecting through multi-channel conversion circuit then, carry out filtering once more, stable as a comparison input signal is given A/D change-over circuit;
Have the A/D change-over circuit in the described embedded MCU control system module, it is used for the conversion of simulating signal, deposits the data that convert in RAM, in order to using;
Described single-chip switching power supply module can generate other two needed power supplys of module, is the basis that two other module can stable operation.
By above disclosed technical scheme as can be known, the present invention compared with prior art has following advantage:
(1), the collection of simulant signal module has good antijamming capability, and good stability.
(2), embedded MCU control system module has good antijamming capability, at a high speed, high-precision A/D transfer capability, and data-handling capacity.
(3), the single-chip switching power supply module has very high antijamming capability.
Description of drawings
Fig. 1 is a system chart of the present invention;
Fig. 2 is collection of simulant signal circuit theory diagrams of the present invention;
Fig. 3 is embedded MCU control system circuit theory diagrams of the present invention;
Fig. 4 is single-chip switching power supply circuit theory diagrams of the present invention.
Embodiment
Describe specific embodiments of the invention in detail below in conjunction with accompanying drawing.
Shown in Fig. 1 system chart of the present invention, the data acquisition system (DAS) that controlling system of welder of the present invention uses is characterized in that, comprises collection of simulant signal circuit module, embedded MCU control system module and single-chip switching power supply module;
The input end of the A/D change-over circuit in the output terminal of described collection of simulant signal circuit module and the embedded MCU control system module links to each other, be used for various simulating signals through filtering, bleeder circuit, after selecting through multi-channel conversion circuit then, carry out filtering once more, stable as a comparison input signal is given A/D change-over circuit;
Have the A/D change-over circuit in the described embedded MCU control system module, it is used for the conversion of simulating signal, deposits the data that convert in RAM, in order to using;
Described single-chip switching power supply module can generate other two needed power supplys of module, is the basis that two other module can stable operation.
The present invention each module composition and function below are described respectively.
1. collection of simulant signal module: shown in Fig. 2 circuit theory diagrams, external analog signal wants to enter into MCU, at first will be through two electric capacity and the П type filtering circuit that inductance is formed, this circuit has good filtration to high frequency interference, can filter out most of undesired signal.And be an electric capacity and the RC filtering circuit that resistance is formed, can play the auxiliary jamproof effect of filtering, bigger basically interference all has been filtered the signal that has been filtered by the prime filtering circuit through this circuit again.But, if there is moment can think when infinitely-great undesired signal is come in, before the two-stage filtering circuit since to the filtration of energy with store certain limit, so can not be considered as infinitely-great filtering signals moment falls, at this moment next be exactly a stabilivolt, be specifically designed to such moment to play the filtering of undesired signal.If the amplitude of undesired signal is greater than the voltage stabilizing value of stabilivolt, stabilivolt will conducting, and the voltage magnitude here is limited near the voltage stabilizing value, can avoid the electronic component of back to be damaged.Next signal also will pass through the bleeder circuit that R400 (10K) and R407 (100) form, and signal amplitude can be carried out further amplitude limit.Then, multichannel has just entered multi-channel analog switch CD4051 through the signal of filtering, as required, any one road signal can be given the A/D change-over circuit of back level.Signal through the conversion of multi-channel analog switch is not directly given the A/D change-over circuit, but has passed through the filtering circuit of a follower again.The signal that the process multicircuit switch comes out when undesired signal is very strong, still fluctuates in certain scope after testing as can be seen.So added the RC filtering circuit that a R414 and C414 form again at this, given A/D change-over circuit through behind the follower then.Here follower not only plays the effect of filtering, and just in case had when moment, big undesired signal was come in, can also avoid making the A/D conversion portion of embedded MCU to damage.Arrive here, the hardware filtering circuit before the A/D switching signal is just calculated end, though circuit is a lot, facts have proved very strong antijamming capability.
2. be with the embedded MCU control system module of A/D conversion: as shown in Figure 3, that native system uses is the MB90F497 embedded Control MCU of Fuji Tsu, mainly is intended for automobile electronic system and uses, so have very high antijamming capability and stability.This minimum system can be moved, must possess several conditions: stable power system, stable crystal oscillator and Reset electrify restoration circuit.System shown in Figure 3 figure has possessed the pacing items of operation.Under the situation that system can normally move, as long as through software setting, being integrated in A/D change-over circuit in the sheet just can operate as normal.MB90F497 with sheet in the A/D change-over circuit under the 16MHz crystal oscillator frequency, can realize the sampling time of minimum 2.0 μ s, the conversion timing signal of the fastest 6.12 μ s.Can realize 10 and 8 A/D conversions very easily by software setting.Through the signal behind the prime filtering circuit, the conversion through the A/D modular converter just can realize the conversion from the simulating signal to the digital signal.But fact proved that the value that only relies on A/D conversion after the hardware circuit filtering still goes certain fluctuation.So, on the basis of hardware filtering, also MCU to be pre-deposited RAM through the numerical value of the conversion of A/D repeatedly, carry out software filtering n time, specifically the number of times of filtering will be according to determining after the actual conditions repetition test.At this moment the data that obtain are only the A/D conversion value that finally will use.Such data can directly be used, and also can deposit among the 93C86EEPROM by synchronous serial interface as required, use after being equipped with.
3. single-chip switching power supply module: as shown in Figure 4,, especially have the TT﹠C system of A/D conversion, the correctness of the stable and transforming numerical of the system of the stable directly decision of power supply for the embedded MCU control system.So, high precision, high anti-interference, the embedded MCU data acquisition system (DAS) of high stability needs a stable power system.For this reason, native system has used the electric power system of single-chip switching power supply as system (Fig. 4).It at first is the low-voltage AC that the alternating current of 380V is converted to 20V through step-down transformer, then through behind the filtering circuit as shown in Figure 4, be rectified into the 24V direct current, again through exporting stable 15V behind the single-chip switching power supply LM2576, the 5V direct current, and the electric current on each road can reach 3A.The advantage of such power supply is very high antijamming capability.At first be that alternating current comes in just to have a good common mode and differential mode filtering circuit, voltage stabilizing becomes required voltage through single-chip switching power supply again through the circuit of overcommutation then, and Switching Power Supply itself has very strong resistant function with regard to the high-frequency interferencing signal that seals in to external world.So so high jamproof power-supply system can satisfy the needs of high precision, high stable, high anti-interference embedded MCU data acquisition system (DAS) fully, and be the indispensable part of this cover system, also can be described as the foundation stone of this cover system stable operation.
Claims (3)
1. the data acquisition system (DAS) that controlling system of welder uses is characterized in that, comprises collection of simulant signal circuit module, embedded MCU control system module and single-chip switching power supply module;
The input end of the A/D change-over circuit in the output terminal of described collection of simulant signal circuit module and the embedded MCU control system module links to each other, be used for various simulating signals through filtering, bleeder circuit, after selecting through multi-channel conversion circuit then, carry out filtering once more, stable as a comparison input signal is given A/D change-over circuit;
Have the A/D change-over circuit in the described embedded MCU control system module, it is used for the conversion of simulating signal, deposits the data that convert in RAM, in order to using;
Described single-chip switching power supply module generates other two needed power supplys of module, be the basis that two other module can stable operation, described single-chip switching power supply module comprises step-down transformer, common mode and differential mode filtering circuit and the single-chip switching power supply that is electrically connected successively.
2. the data acquisition system (DAS) that controlling system of welder according to claim 1 uses, it is characterized in that described collection of simulant signal circuit module comprises successively the Π type filtering that is electrically connected, RC filtering, stabilivolt amplitude limit, bleeder circuit, multi-channel analog switch, RC filtering and follower filtering hardware circuit once more.
3. the data acquisition system (DAS) that controlling system of welder according to claim 1 uses is characterized in that described Switching Power Supply is LM2576.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100240265A CN100394332C (en) | 2006-02-21 | 2006-02-21 | Data acquiring system for controlling system of welder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100240265A CN100394332C (en) | 2006-02-21 | 2006-02-21 | Data acquiring system for controlling system of welder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1825235A CN1825235A (en) | 2006-08-30 |
| CN100394332C true CN100394332C (en) | 2008-06-11 |
Family
ID=36935945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100240265A Expired - Fee Related CN100394332C (en) | 2006-02-21 | 2006-02-21 | Data acquiring system for controlling system of welder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100394332C (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5302799A (en) * | 1991-12-09 | 1994-04-12 | Applied Research, Inc. | Weld analysis and control system |
| CN2205025Y (en) * | 1994-07-15 | 1995-08-09 | 电力工业部电力科学研究院 | Data collecting and signalling device |
| JP2001105138A (en) * | 1999-10-05 | 2001-04-17 | Toshiba Corp | Automatic welding equipment and method for automatic welding |
| CN2481443Y (en) * | 2001-04-18 | 2002-03-13 | 雷宏峰 | Device for remote control of current for electric welder |
| US6415191B1 (en) * | 1993-11-18 | 2002-07-02 | Laser Measurement International Inc. | Intelligent machining and manufacturing |
-
2006
- 2006-02-21 CN CNB2006100240265A patent/CN100394332C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5302799A (en) * | 1991-12-09 | 1994-04-12 | Applied Research, Inc. | Weld analysis and control system |
| US6415191B1 (en) * | 1993-11-18 | 2002-07-02 | Laser Measurement International Inc. | Intelligent machining and manufacturing |
| CN2205025Y (en) * | 1994-07-15 | 1995-08-09 | 电力工业部电力科学研究院 | Data collecting and signalling device |
| JP2001105138A (en) * | 1999-10-05 | 2001-04-17 | Toshiba Corp | Automatic welding equipment and method for automatic welding |
| CN2481443Y (en) * | 2001-04-18 | 2002-03-13 | 雷宏峰 | Device for remote control of current for electric welder |
Non-Patent Citations (4)
| Title |
|---|
| 基于LM2576的高可靠MCU电源设计. 王明顺.国外电子元器件，第11期. 2004 |
| 基于LM2576的高可靠MCU电源设计. 王明顺.国外电子元器件，第11期. 2004 * |
| 强干扰条件下的多通道温度高速采集及数据处理系统. 张锐，陈佩寅，曲维力.焊接，第5期. 2002 |
| 强干扰条件下的多通道温度高速采集及数据处理系统. 张锐，陈佩寅，曲维力.焊接，第5期. 2002 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1825235A (en) | 2006-08-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201438208U (en) | Online detecting device of on-off control return circuit of circuit breaker | |
| CN103166449B (en) | A kind of AC-DC power converter | |
| CN105811780B (en) | A kind of output voltage constant pressure control method of primary side feedback inverse excitation type converter | |
| CN103248293A (en) | TMS320F2812 based speed regulation controller of brushless DC motor | |
| CN102577057B (en) | Method and circuit for power factor correction of base pin | |
| CN102287419B (en) | Device and method for automatically testing performance of steering engine servo valve | |
| CN105004918A (en) | Acquisition device for operation energy consumption data of urban rail transit train | |
| CN105870974B (en) | Distributed photovoltaic grid-connected system electrical parameter bidirectional measurement device | |
| CN104422808A (en) | Sampling circuit, switching power supply control circuit, switching power supply and sampling method | |
| CN102904466A (en) | Switching power supply controller | |
| CN102684490A (en) | Fixed-frequency quasi-sliding mode controller applicable to single-inductance double-output buck converter | |
| CN111308232B (en) | System and method for measuring stray parameters of current loop of high-power current conversion module | |
| CN100394332C (en) | Data acquiring system for controlling system of welder | |
| CN103780074B (en) | Signal peak detector and method, and control IC and control method of PFC converter | |
| CN205160398U (en) | Self -adaptation sampling circuit , printed circuit board , former limit feedback constant voltage system and switching power supply system | |
| CN103378726B (en) | Switched power supply and control circuit thereof and control method | |
| CN201061147Y (en) | Automatic switching compound control device of static reactive compensator | |
| CN102059432A (en) | Digitalized welding machine with parameter self-learning function | |
| CN101937058A (en) | Device and method for testing multi-wave fault current testing device in converter valve operating test | |
| CN103269059B (en) | A kind of switching circuit improving overvoltage protection precision | |
| CN110557062A (en) | Efficient control device for power factor of diesel generator set | |
| CN104868743A (en) | Auxiliary power supply system for electric vehicle | |
| CN203618195U (en) | Isolated type primary-side feedback LED drive circuit having PFC and controller thereof | |
| CN201417403Y (en) | Constant power control device of switch power supply | |
| CN110474540A (en) | Current Sensorless current-sharing control method based on two module bi-directional half bridge DC converter crisscross parallels |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 201204 Shanghai city Pudong New Area Beicai Industrial Park No. 33 Lianlinlu Patentee after: SHANGHAI WTL WELDING EQUIPMENT MANUFACTURE Co.,Ltd. Address before: 201204 Shanghai city Lianlin Pu Cai Northeast Road No. 33 Patentee before: Shanghai WTL Welding Equipment Manufacture Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Data acquiring system for controlling system of welder Effective date of registration: 20110922 Granted publication date: 20080611 Pledgee: Pudong Productivity Promotion Center, Shanghai Pledgor: SHANGHAI WTL WELDING EQUIPMENT MANUFACTURE Co.,Ltd. Registration number: 2011990000366 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080611 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |