CN103676740A - Safety control circuit based on CPLD - Google Patents
Safety control circuit based on CPLD Download PDFInfo
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- CN103676740A CN103676740A CN201310662111.4A CN201310662111A CN103676740A CN 103676740 A CN103676740 A CN 103676740A CN 201310662111 A CN201310662111 A CN 201310662111A CN 103676740 A CN103676740 A CN 103676740A
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Abstract
The invention relates to a safety control circuit based on a CPLD. The safety control circuit comprises a safety interlock loop drive circuit, a safety loop and logic circuit, a motor drive circuit, a K2 control and logic circuit, a K2 drive circuit, an electromagnet control and logic circuit and an electromagnet drive circuit. The safety loop and logic circuit is connected with the safety interlock loop drive circuit, the K2 control and logic circuit is connected with the K2 drive circuit, the electromagnet control and logic circuit is connected with the electromagnet drive circuit. The safety control circuit further comprises a DSP controller and a CPLD chip. Both the DSP controller and the CPLD chip are connected with the safety loop and logic circuit, the K2 control and logic circuit and the electromagnet control and logic circuit, and the DSP controller is connected with the CPLD chip. The invention further discloses a control method of the safety control circuit. Compared with the prior art, the CPLD chip is additionally arranged and used as hardware logic to jointly control a car door controller, hidden dangers of car door safety accidents purely caused by software failures are eliminated, and safety of a train in the running process is guaranteed.
Description
Technical field
The present invention relates to a kind of control circuit of car door controller, specifically, is a kind of safety control circuit based on CPLD.
Background technology
At present, the safety circuit of car door controller inside is general independent by software control, utilizes software to judge initial conditions and exports control signal and control safety circuit work, does not increase hardware control circuit, guarantees the balance of safety and reliability.For the higher system of car door reliability requirement, current technology can reduce out of order probability during car door operation, but security is relatively low, after software is out of order, may cause car door fault open, causes security incident.
Summary of the invention
Goal of the invention: the object of this invention is to provide the safety control circuit that a kind of safety coefficient is high, failure rate is little.
Technical scheme: the present invention adopts following technological means to be realized:
A kind of safety control circuit based on CPLD, comprise safety interlock drive circuit circuit, safety return circuit and logical circuit, motor-drive circuit, K2 controls and logical circuit, K2 driving circuit, magnet control and logical circuit and solenoid driver circuit, safety return circuit is connected safety interlock drive circuit circuit with logical circuit, K2 controls and is connected K2 driving circuit with logical circuit, magnet control is connected solenoid driver circuit with logical circuit, also comprise dsp controller and CPLD chip, DSP and CPLD chip all with safety return circuit and logical circuit, K2 control is connected with logical circuit with logical circuit and magnet control, and dsp controller connection CPLD chip-.
CPLD chip is connected with motor-drive circuit.
A control method for safety control circuit, comprises the steps:
1) dsp controller, CPLD chip is received after the order of controlling K2 adhesive or disconnection, exports respectively a K2 and drives signal and the 2nd K2 to drive signal;
2) K2 controls with logical circuit and receives after a K2 drives signal and the 2nd K2 to drive signal simultaneously and export the driving signal of controlling K2 driving circuit adhesive or disconnection;
3) dsp controller, CPLD chip is received after the order of controlling the adhesive of safety interlock loop or disconnection, exports respectively the first safety interlock drive circuit signal and the second interlocking loop and drives signal;
4) safety interlock loop receives after the first safety interlock drive circuit signal and the second interlocking loop drive signal simultaneously and exports the control signal of controlling safety interlock drive circuit circuit with logical circuit;
5) dsp controller, CPLD chip is received after the order of controlling electromagnetic actuation or disconnection, exports respectively the first control circuit for electromagnet and drives signal and the second control circuit for electromagnet to drive signal;
6) control circuit for electromagnet receives after the first control circuit for electromagnet drives signal and the second control circuit for electromagnet to drive signal and exports the control signal of controlling solenoid driver circuit with logical circuit;
7) dsp controller is received after the order of controlling motor operation, output pwm signal;
8) CPLD chip receives pwm signal, if there is unexpected situation of opening the door and now dsp software lost efficacy, after its internal circuit, output pwm signal, pwm signal drive motor control circuit is controlled motor and is closed the door.
Beneficial effect: compared with prior art, it has increased CPLD chip as hardware logic co-controlling car door controller in the present invention, has got rid of and due to software failure, has caused merely the hidden danger of car door security accident, guarantees the security in train travelling process.
Accompanying drawing explanation
Fig. 1 is control circuit schematic diagram of the present invention.
Embodiment
Below in conjunction with Figure of description, the present invention is described in further detail:
The present invention relates to a kind of safety control circuit based on CPLD, comprise safety return circuit and logical circuit, safety interlock drive circuit circuit, K2 control and logical circuit, K2 driving circuit, magnet control and logical circuit, solenoid driver circuit, safety return circuit is connected safety return circuit driving circuit and by its control with logical circuit, K2 controls and to be connected K2 driving circuit with logical circuit and to be controlled, and magnet control is connected solenoid driver circuit and by its control with logical circuit.
The present invention also comprises dsp controller and CPLD chip, specifically, dsp controller connects CPLD chip, DSP has been connected respectively safety return circuit and logical circuit with CPLD chip simultaneously, magnet control and logical circuit and K2 control and logical circuit, when needs are controlled above-mentioned and logical circuit, dsp controller and CPLD chip send operation signal simultaneously, receive after two signals with logical circuit, can send control signal, dsp controller sends signal to CPLD chip simultaneously, inform the whether state in normal work of the current DSP of CPLD, once DSP lost efficacy, CPLD can control separately motor and carry out door-closing operation, so, the security performance of gating device strengthens greatly.
The invention still further relates to the control method of this circuit, specifically, comprised following several step:
First, dsp controller, CPLD chip is received after the order of controlling K2 adhesive or disconnection, send respectively a K2 and drive signal, the 2nd K2 drives signal to control and logical circuit to K2, K2 controls with logical circuit and receives that a K2 drives signal and the 2nd K2 to drive after signal simultaneously, and the driving signal of K2 driving circuit adhesive or disconnection is controlled in output;
Dsp controller is received after the order of controlling the adhesive of safety interlock loop or disconnection, send respectively the first safety interlock drive circuit signal, the second safety interlock drive circuit signal is to safety interlock loop and logical circuit, and safety interlock loop and logical circuit are received after the first safety interlock drive circuit signal and the second interlocking loop drive signal simultaneously and exported the control signal of controlling the adhesive of safety interlock loop or disconnection;
Dsp controller, CPLD chip is received after the order of controlling electromagnetic actuation or disconnection, send respectively the first control circuit for electromagnet and drive signal, the second control circuit for electromagnet drives signal to control circuit for electromagnet and logical circuit, and control circuit for electromagnet and logical circuit are received after the first control circuit for electromagnet drives signal and the second control circuit for electromagnet to drive signal and exported the control adhesive of solenoid driver circuit or the control signal of disconnection;
Dsp controller is received after the order of controlling motor operation, output pwm signal;
CPLD chip receives pwm signal, if there is unexpected situation of opening the door and now dsp software lost efficacy, after its internal circuit, output pwm signal, pwm signal drive motor control circuit is controlled motor and is closed the door.
Claims (3)
1. the safety control circuit based on CPLD, it is characterized in that: comprise safety interlock drive circuit circuit, safety return circuit and logical circuit, motor-drive circuit, K2 controls and logical circuit, K2 driving circuit, magnet control and logical circuit and solenoid driver circuit, safety return circuit is connected safety interlock drive circuit circuit with logical circuit, K2 controls and is connected K2 driving circuit with logical circuit, magnet control is connected solenoid driver circuit with logical circuit, also comprise dsp controller and CPLD chip, DSP and CPLD chip all with safety return circuit and logical circuit, K2 control is connected with logical circuit with logical circuit and magnet control, and dsp controller connection CPLD chip-.
2. safety control circuit according to claim 1, is characterized in that: CPLD chip is connected with motor-drive circuit.
3. a control method for safety control circuit according to claim 1, is characterized in that: comprise the steps:
1) dsp controller, CPLD chip is received after the order of controlling K2 adhesive or disconnection, exports respectively a K2 and drives signal and the 2nd K2 to drive signal;
2) K2 controls with logical circuit and receives after a K2 drives signal and the 2nd K2 to drive signal simultaneously and export the driving signal of controlling K2 driving circuit adhesive or disconnection;
3) dsp controller, CPLD chip is received after the order of controlling the adhesive of safety interlock loop or disconnection, exports respectively the first safety interlock drive circuit signal and the second interlocking loop and drives signal;
4) safety interlock loop receives after the first safety interlock drive circuit signal and the second interlocking loop drive signal simultaneously and exports the control signal of controlling the adhesive of safety interlock loop or disconnection with logical circuit;
5) dsp controller, CPLD chip is received after the order of controlling electromagnetic actuation or disconnection, exports respectively the first control circuit for electromagnet and drives signal and the second control circuit for electromagnet to drive signal;
6) control circuit for electromagnet receives after the first control circuit for electromagnet drives signal and the second control circuit for electromagnet to drive signal and exports the control adhesive of solenoid driver circuit or the control signal of disconnection with logical circuit;
7) dsp controller is received after the order of controlling motor operation, output pwm signal;
8) CPLD chip receives pwm signal, if there is unexpected situation of opening the door and now dsp software lost efficacy, after its internal circuit, output pwm signal, pwm signal drive motor control circuit is controlled motor and is closed the door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310662111.4A CN103676740A (en) | 2013-12-09 | 2013-12-09 | Safety control circuit based on CPLD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310662111.4A CN103676740A (en) | 2013-12-09 | 2013-12-09 | Safety control circuit based on CPLD |
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| Publication Number | Publication Date |
|---|---|
| CN103676740A true CN103676740A (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310662111.4A Pending CN103676740A (en) | 2013-12-09 | 2013-12-09 | Safety control circuit based on CPLD |
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| CN (1) | CN103676740A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511344A (en) * | 2015-12-01 | 2016-04-20 | 许继电气股份有限公司 | Method for implementing graphical logic interlocking function of high-voltage DC power transmission measurement and control device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1060922A1 (en) * | 1999-06-19 | 2000-12-20 | Brose Fahrzeugteile GmbH & Co. KG | Control circuit for power operated windows, sliding roofs or door locks in motor vehicles |
| CN101936110A (en) * | 2010-08-27 | 2011-01-05 | 东南大学 | Intelligent door control system for rail train doors |
| CN201723053U (en) * | 2010-07-14 | 2011-01-26 | 洪水源 | Electronic automatic door apparatus |
| EP2404805A1 (en) * | 2009-03-03 | 2012-01-11 | Nabtesco Corporation | Door control system for railroad vehicle |
| CN102536033A (en) * | 2011-12-23 | 2012-07-04 | 南京理工大学 | Intelligent door control system of rail train |
| CN202429220U (en) * | 2011-12-21 | 2012-09-12 | 上海亨钧科技有限公司 | Photo-electricity semi-automatic block module |
-
2013
- 2013-12-09 CN CN201310662111.4A patent/CN103676740A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1060922A1 (en) * | 1999-06-19 | 2000-12-20 | Brose Fahrzeugteile GmbH & Co. KG | Control circuit for power operated windows, sliding roofs or door locks in motor vehicles |
| EP2404805A1 (en) * | 2009-03-03 | 2012-01-11 | Nabtesco Corporation | Door control system for railroad vehicle |
| CN201723053U (en) * | 2010-07-14 | 2011-01-26 | 洪水源 | Electronic automatic door apparatus |
| CN101936110A (en) * | 2010-08-27 | 2011-01-05 | 东南大学 | Intelligent door control system for rail train doors |
| CN202429220U (en) * | 2011-12-21 | 2012-09-12 | 上海亨钧科技有限公司 | Photo-electricity semi-automatic block module |
| CN102536033A (en) * | 2011-12-23 | 2012-07-04 | 南京理工大学 | Intelligent door control system of rail train |
Non-Patent Citations (1)
| Title |
|---|
| 张玉超 等: "地铁站屏蔽门控制系统研制", 《电气传动》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511344A (en) * | 2015-12-01 | 2016-04-20 | 许继电气股份有限公司 | Method for implementing graphical logic interlocking function of high-voltage DC power transmission measurement and control device |
| CN105511344B (en) * | 2015-12-01 | 2017-12-19 | 许继电气股份有限公司 | The implementation method of D.C. high voltage transmission measure and control device graphic logic interlock function |
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Application publication date: 20140326 |