CN202268744U - Microcomputer comprehensive protection device of high voltage flameproof switch - Google Patents
Microcomputer comprehensive protection device of high voltage flameproof switch Download PDFInfo
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- CN202268744U CN202268744U CN2011203689520U CN201120368952U CN202268744U CN 202268744 U CN202268744 U CN 202268744U CN 2011203689520 U CN2011203689520 U CN 2011203689520U CN 201120368952 U CN201120368952 U CN 201120368952U CN 202268744 U CN202268744 U CN 202268744U
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Abstract
The utility model discloses a microcomputer comprehensive protection device of a high voltage flameproof switch, which comprises a main control module (1), an on-off quantity input module (3), an on-off quantity output module (2), a man-machine interface module (4), a communication module (5) and a data acquisition module (6), wherein the data acquisition module (6) comprises a signal conditioning circuit (7) and a digital-to-analogue conversion unit (8). The microcomputer comprehensive protection device integrates four functions of measurement, control, protection and communication, has the advantages of simple structure, high reliability, strong anti-interference ability and low cost, and can widely adapt to various environmental conditions.
Description
Technical field
The utility model relates to a kind of high-tension switch cabinet explosion-protection equipment, especially integrates the high-voltage explosion-proof switch computer integrated protection of measurement, control, protection, communication four big functions.
Background technology
Because the variation of colliery electric power system neutral grounding mode, there are some problems in existing high-voltage explosion-proof switch comprehensive protector on earth leakage protective, simultaneously, along with the continuous popularization of colliery power automation, also increasingly high to the requirement of protective device.
Summary of the invention
The purpose of the utility model is that a kind of high-voltage explosion-proof switch computer integrated protection will be provided, and it can provide for the plant equipment of working face and development end efficiently, safety, stable electric energy.
For achieving the above object, the utility model comprises the main control module (1) that is used for data and command process; The switching input module (3) of collection that is used for branch, the "on" position of on off state and circuit breaker; Be used for the control relay action, drive the switching value output module (7) that the short circuit trip avoidance function is realized; Be used for the people state of device is intervened, device is given the human-machine interface module (4) of feedback information simultaneously; Be used to realize communicating by letter and the communication module (5) of supervision and the operation of control electric power system of flame-proof switch and host computer; The collection and the pretreated data acquisition module (6) that are used for real time data.Said data acquisition module (6) is removed the signal conditioning circuit (7) of the high fdrequency component that overruns and is formed by being used for D/A conversion unit (8) that analog signal changes into digital signal and the adjusting that is used for analog signal.Further wherein signal conditioning circuit (7) adopts the RC passive low ventilating filter will handle the back signal and sends into the D/A conversion unit (8) that adopts 2 16 A/D conversion chips.Communication interface all adopts photoelectric coupled device in the system.
The advantage of the utility model is to accomplish monitoring, calculating, judgement and the processing capacity to colliery underground power supply system Various types of data, and can keep reliably, communicate by letter efficiently with host computer.Can be used for isolated neutral system or neutral by arc extinction coil grounding system under the coal mine.
Description of drawings
Fig. 1 is the circuit block diagram of the utility model.
Fig. 2 is the main program flow chart of the utility model.
Embodiment
Fig. 1 is the circuit block diagram of the utility model, and the utility model as shown in the figure comprises the main control module (1) that is used for data and command process; The switching input module (3) of collection that is used for branch, the "on" position of on off state and circuit breaker; Be used for the control relay action, drive the switching value output module (7) that the short circuit trip avoidance function is realized; Be used for the people state of device is intervened, device is given the human-machine interface module (4) of feedback information simultaneously; Be used to realize communicating by letter and the communication module (5) of supervision and the operation of control electric power system of flame-proof switch and host computer; The collection and the pretreated data acquisition module (6) that are used for real time data.Said data acquisition module (6) is removed the signal conditioning circuit (7) of the high fdrequency component that overruns and is formed by being used for D/A conversion unit (8) that analog signal changes into digital signal and the adjusting that is used for analog signal.Further wherein signal conditioning circuit (7) adopts the RC passive low ventilating filter will handle the back signal and sends into the D/A conversion unit (8) that adopts 2 16 A/D conversion chips.Communication interface all adopts photoelectric coupled device in the system.
Wherein data acquisition module (6) comprises signal conditioning circuit (7) and D/A conversion unit (8); AC signal is introduced signal conditioning circuit (7) through voltage transformer or current transformer respectively, sends into D/A conversion unit (8) afterwards and becomes the discernible digital signal of single-chip microcomputer through the A/D conversion process.Carry out data processing rear drive switching input module (3), switching value output module (2) employing photoelectric coupled device driving relay completion tripping operation and alarm function by main control module (1).Main control module (1) drives the LCD display and the function button operate as normal of human-machine interface module (4) simultaneously.The data that said main control module (1) is transmitted convert the discernible parallel data of LCD to through line driver T6A40, are implemented in the real-time running state that LCD goes up display unit.Communication module (5) adopts RS-485 serial differential transmission means, realizes communicating by letter with host computer.
Fig. 2 is the main program flow chart of the utility model.
When system just powered on or hand-reset after, just get into main program inlet.Program gets into initialization and self check, if device mistake occurs in the inspection process, then through liquid crystal display; If all normally then get into major cycle, prepare sampling, it is separated that the sampling time is set; Call data processing module, calculate the effective value of each fundametal compoment; A step result of calculation is carried out troubleshooting on the basis in fault processing module; Human-machine interface module carries out the input of liquid crystal display and setting value and each parameter.When power supply system broke down, what main program will circulate always gathered and handles parameter, carries out real demonstration according to result then, and draws an appropriate control amount, if received control command, then provided control corresponding output.The A/D sampled result reads and communicates by letter all and in corresponding interrupt routine, to accomplish in the program.
Claims (1)
1. high-voltage explosion-proof switch computer integrated protection, it comprises:
Main control module (1) is used for data and command process;
Switching input module (3) is used for the branch of on off state and circuit breaker, the collection of "on" position;
Switching value output module (2) is used for the control relay action, drives the short circuit trip avoidance function and realizes;
Human-machine interface module (4) is used for the people state of device is intervened, and device is given feedback information simultaneously;
Communication module (5) is used to realize communicating by letter and the operation of supervision and control electric power system of flame-proof switch and host computer;
Data acquisition module (6), the collection of real time data and preliminary treatment,
It is characterized in that:
Whole system is by the unified control of main control module (1);
Said data acquisition module (6) comprising:
D/A conversion unit (8) is used for analog signal and changes into digital signal;
Signal conditioning circuit (7) is used for the adjusting of analog signal, removes the high fdrequency component that overruns;
Wherein signal conditioning circuit (7) adopts the RC passive low ventilating filter will handle the back signal and sends into the D/A conversion unit (8) that adopts 2 16 A/D conversion chips;
Communication interface all adopts photoelectric coupled device in the system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203689520U CN202268744U (en) | 2011-10-06 | 2011-10-06 | Microcomputer comprehensive protection device of high voltage flameproof switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203689520U CN202268744U (en) | 2011-10-06 | 2011-10-06 | Microcomputer comprehensive protection device of high voltage flameproof switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202268744U true CN202268744U (en) | 2012-06-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203689520U Expired - Fee Related CN202268744U (en) | 2011-10-06 | 2011-10-06 | Microcomputer comprehensive protection device of high voltage flameproof switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202268744U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324792A (en) * | 2011-10-06 | 2012-01-18 | 武陟县电业总公司 | Integrated protection device for high-pressure explosion proof switch microcomputer |
-
2011
- 2011-10-06 CN CN2011203689520U patent/CN202268744U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324792A (en) * | 2011-10-06 | 2012-01-18 | 武陟县电业总公司 | Integrated protection device for high-pressure explosion proof switch microcomputer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120606 Termination date: 20121006 |