CN202854542U - Controlling device for improving anti-interference of industrial control system through CPLD - Google Patents
Controlling device for improving anti-interference of industrial control system through CPLD Download PDFInfo
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- CN202854542U CN202854542U CN 201220512520 CN201220512520U CN202854542U CN 202854542 U CN202854542 U CN 202854542U CN 201220512520 CN201220512520 CN 201220512520 CN 201220512520 U CN201220512520 U CN 201220512520U CN 202854542 U CN202854542 U CN 202854542U
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- cpld
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- control module
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Abstract
The utility model provides a controlling device for improving anti-interference of an industrial control system through CPLD. The controlling device comprises a given signal unit, a position feedback signal unit, an on-site on-off input circuit, a motor operation control circuit, an interface circuit and a CPLD control unit, wherein the given signal unit, the position feedback signal unit, the on-site on-off input circuit, the motor operation control circuit and the interface circuit are respectively connected with the CPLD control unit. The utility model has the following beneficial effects: with the above-mentioned technical scheme, dead halt and out-of-control of the system caused by unstable voltage and interference in an operation environment can be avoided, and operation stability of an actuating mechanism is improved; and the controlling device has the advantages of a compact structure, strong anti-interference capability, reliable operation, convenient maintenance, low processing cost, high production efficiency, etc.
Description
Technical field
The utility model belongs to control or mediation system field, especially relates to a kind of by the jamproof control device of CPLD raising industrial control system.
Background technology
Electric operator is the terminal actuating equipment in the industrial process control system, its Main Function is to convert the control signal that control system is sent to switching signal, the actions such as control solid-state relay, directional contactor and motor positive and inverse, the position of final by-pass valve control or the position of other governor motions are widely used in the industries such as electric power, metallurgy, petrochemical industry, heat supply, cement, building materials, light textile, food.In the prior art, in the operational process of electric operator, because operation is abominable, the control system that is formed by single-chip microcomputer, although taked certain interference protection measure, existence still can not be avoided owing to technical matterss such as the system in case of system halt that voltage instability, interference etc. cause, out-of-control phenomenons.
Summary of the invention
Problem to be solved in the utility model provides a kind of can the opposing in the industrial environment owing to voltage instability, disturbing the system in case of system halt that causes, the jamproof control circuit of industrial control system out of control.
For solving the problems of the technologies described above, the technical solution adopted in the utility model comprises given signal element, position feed back signal unit, on-the-spot switching value input circuit, motor running control circuit, interface circuit, it is characterized in that: also comprise the CPLD control module; Given signal element, the position feed back signal unit, on-the-spot switching value input circuit, the motor running control circuit, interface circuit is connected with the CPLD control module respectively, the position feed back signal unit passes to the CPLD control module by interface circuit with position feed back signal, the given signal of given signal element passes to the CPLD control module, the CPLD control module is to position feed back signal, given signal compares and logical process, result being sent to the motor running control circuit controls motor again, on-the-spot switching value input circuit connects the CPLD control module, switch controlling signal is passed to the CPLD control module carry out the integrated circuit working state control; The motor running control circuit is connected with the CPLD control module by interface circuit, and control signal is passed to circuit for controlling motor.
Further, described CPLD control module comprises A/D converter, CPLD chip, and A/D converter connects the CPLD chip, and the digital signal transfers after A/D converter is processed is processed to the CPLD chip.
Further, described A/D converter is not less than one.
Further, described A/D converter comprises given signal A/D converter and position feed back signal A/D converter; Given signal A/D converter is connected with given signal element, and given signal passes to given signal A/D converter; The position feed back signal A/D converter is connected with the position feed back signal unit, and position feed back signal passes to puts the feedback signal A/D converter.
Further, describedly improve the jamproof device of industrial control system by CPLD and also comprise digital pipe display circuit, digital pipe display circuit is connected with the CPLD control module, and display is passed to digital pipe display circuit.
Further, described interface circuit is not less than one.
Further, described interface circuit comprises serial line interface, parallel interface; Described serial line interface, parallel interface and CPLD control module are connected in parallel.
Advantage and the good effect that the utlity model has are: owing to adopting technique scheme, can avoid the system in case of system halt that causes owing to voltage instability, interference, situation out of control in operating environment, improve the operation stability of topworks; Have compact conformation, antijamming capability is strong, reliable easy to maintenance, processing cost is low, the production efficiency advantages of higher.
Description of drawings
Fig. 1 is structural representation of the present utility model
Fig. 2 is circuit theory diagrams of the present utility model
Fig. 3 is digital pipe display circuit schematic diagram of the present utility model
Fig. 4 is on-the-spot switching value input circuit schematic diagram of the present utility model
Fig. 5 is CPLD control module circuit theory diagrams of the present utility model
Fig. 6 is motor running control circuit schematic diagram of the present utility model
Embodiment
Shown in Fig. 1 to Fig. 6 combination, the utility model comprises given signal element, position feed back signal unit, on-the-spot switching value input circuit, motor running control circuit, interface circuit, also comprises the CPLD control module; Given signal element, position feed back signal unit, on-the-spot switching value input circuit, motor running control circuit, interface circuit are connected with the CPLD control module respectively.Described CPLD control module comprises A/D converter, CPLD chip, and A/D converter connects the CPLD chip, and the digital signal transfers after A/D converter is processed is processed to the CPLD chip.Described A/D converter comprises given signal A/D converter and position feed back signal A/D converter; Given signal A/D converter is connected with given signal element, and given signal passes to given signal A/D converter; The position feed back signal A/D converter is connected with the position feed back signal unit, and position feed back signal passes to puts the feedback signal A/D converter.
The position feed back signal unit passes to the CPLD control module by interface circuit with position feed back signal, the given signal of given signal element passes to the CPLD control module, the CPLD control module compares and logical process position feed back signal, given signal, result being sent to the motor running control circuit controls motor again, on-the-spot switching value input circuit connects the CPLD control module, switch controlling signal is passed to the CPLD control module carry out the integrated circuit working state control; The motor running control circuit is connected with the CPLD control module by interface circuit, and control signal is passed to circuit for controlling motor.
Describedly improve the jamproof device of industrial control system by CPLD and also comprise digital pipe display circuit, digital pipe display circuit is connected with the CPLD control module, and display is passed to digital pipe display circuit.
Described interface circuit is not less than one, and described interface circuit comprises serial line interface, parallel interface; Described serial line interface, parallel interface and CPLD control module are connected in parallel.
Above an embodiment of the present utility model is had been described in detail, but described content only is preferred embodiment of the present utility model, can not be considered to be used to limiting practical range of the present utility model.All equalizations of doing according to the utility model application range change and improve etc., all should still belong within the patent covering scope of the present utility model.
Claims (7)
1. improve the jamproof control device of industrial control system by CPLD, comprise given signal element, position feed back signal unit, on-the-spot switching value input circuit, motor running control circuit, interface circuit, it is characterized in that: also comprise the CPLD control module; Given signal element, the position feed back signal unit, on-the-spot switching value input circuit, the motor running control circuit, interface circuit is connected with the CPLD control module respectively, the position feed back signal unit passes to the CPLD control module by interface circuit with position feed back signal, the given signal of given signal element passes to the CPLD control module, the CPLD control module is to position feed back signal, given signal compares and logical process, result being sent to the motor running control circuit controls motor again, on-the-spot switching value input circuit connects the CPLD control module, switch controlling signal is passed to the CPLD control module carry out the integrated circuit working state control; The motor running control circuit is connected with the CPLD control module by interface circuit, and control signal is passed to circuit for controlling motor.
2. according to claim 1 by the jamproof control device of CPLD raising industrial control system, it is characterized in that: described CPLD control module comprises A/D converter, CPLD chip, A/D converter connects the CPLD chip, and the digital signal transfers after A/D converter is processed is processed to the CPLD chip.
3. according to claim 1 by the jamproof control device of CPLD raising industrial control system, it is characterized in that: described A/D converter is not less than one.
4. according to claim 3 by the jamproof control device of CPLD raising industrial control system, it is characterized in that: described A/D converter comprises given signal A/D converter and position feed back signal A/D converter; Given signal A/D converter is connected with given signal element, and given signal passes to given signal A/D converter; The position feed back signal A/D converter is connected with the position feed back signal unit, and position feed back signal passes to puts the feedback signal A/D converter.
5. according to claim 1 by the jamproof control device of CPLD raising industrial control system, it is characterized in that: describedly improve the jamproof control device of industrial control system by CPLD and also comprise digital pipe display circuit, digital pipe display circuit is connected with the CPLD control module, and display is passed to digital pipe display circuit.
6. according to claim 1 by the jamproof control device of CPLD raising industrial control system, it is characterized in that: described interface circuit is not less than one.
7. according to claim 1 by the jamproof control device of CPLD raising industrial control system, it is characterized in that: described interface circuit comprises serial line interface, parallel interface; Described serial line interface, parallel interface and CPLD control module are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220512520 CN202854542U (en) | 2012-09-29 | 2012-09-29 | Controlling device for improving anti-interference of industrial control system through CPLD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220512520 CN202854542U (en) | 2012-09-29 | 2012-09-29 | Controlling device for improving anti-interference of industrial control system through CPLD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202854542U true CN202854542U (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220512520 Expired - Fee Related CN202854542U (en) | 2012-09-29 | 2012-09-29 | Controlling device for improving anti-interference of industrial control system through CPLD |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202854542U (en) |
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2012
- 2012-09-29 CN CN 201220512520 patent/CN202854542U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20150929 |
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| EXPY | Termination of patent right or utility model |