CN104539278A - Signal interlocking circuit with priority for emission and control equipment - Google Patents
Signal interlocking circuit with priority for emission and control equipment Download PDFInfo
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- CN104539278A CN104539278A CN201410782318.XA CN201410782318A CN104539278A CN 104539278 A CN104539278 A CN 104539278A CN 201410782318 A CN201410782318 A CN 201410782318A CN 104539278 A CN104539278 A CN 104539278A
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Abstract
Provided is a signal interlocking circuit with priority. The circuit comprises a master control signal control circuit, a second-level control circuit, a third-level control circuit and an activation circuit, wherein the master control signal control circuit is used for locking a second-level control signal, a third-level control signal and an activation signal when a master control signal is set to be invalid; the second level-control circuit is used for locking the third-level control signal and the activation signal when the second-level control signal is set to be invalid; the third-level control circuit is used for locking the activation signal when the third-level control signal is set to be invalid; the activation circuit is used for outputting an activation driving signal outwards when the activation signal is not locked. The accuracy of the output activation driving signal is ensured through control of the three levels of control circuits.
Description
Technical field
The present invention relates to equipment control technology field, particularly relate to a kind of launch control equipment technical field.
Background technology
In emission control field, ensureing the safe and reliable of output drive signal, is one of emphasis of control appliance research.
Launch control equipment is the final executor of all instructions and signal, in order to ensure the fail safe of output signal, this kind equipment is generally Attended mode equipment, has personnel intact to guarantee the state before emission control, possesses launching condition when possessing launching condition by manually replying to host computer.
But under more and more automation and intelligentized trend, launch control equipment is also striding forward to unattended operation type, so just needing equipment autonomously process and judging all multiple instruction and signal.The resident software of launching control equipment can well accomplish various condition adjudgement and locking, but at the device power initial stage, namely in software initialization process, judge with regard to there is the signal cannot sent host computer thus occur the situation of misoperation, and the reaction time delay of software control is large, real-time is poor.
Require higher occasion in control precision, project planner also adopts the mode of hardware to guarantee that drive singal exports under correct condition.But, when the control signal running into forceful electric power interference or host computer is abnormal, also often there is the situation of misoperation in existing hardware signal protective circuit.
Based on prior art Problems existing, in order to improve the reliability that launch control equipment drive singal exports further, raising equipment safety in operation, avoid the generation of major accident, the application aims to provide a kind of signal interlock method and the circuit with priority, can guarantee the accuracy that signal exports.
Summary of the invention
Object of the present invention is mainly achieved through the following technical solutions: a kind of signal interlock circuit with priority, this circuit comprises master control signal control circuit, Two-stage control circuit, three class control circuit and active circuit, wherein said master control signal control circuit is used for when master control signal is set to invalid, by Two-stage control signal, three class control signal and activation signal locking; Described Two-stage control circuit is used for when described Two-stage control signal is set to effective, by described three class control signal and described activation signal locking; Described three class control circuit is used for when being placed in effective when described three class control signal, by described activation signal locking; Described active circuit is used for when described activation signal is not by locking, outwards exports and activates drive singal; By the control of above three class control circuit, ensure that the accuracy of the activation signal of output.
Preferably, described master control signal control circuit comprises the first triode (Q1), the first relay (K1), and wherein said first relay is single-pole single-throw(SPST relay; When master control signal is effective, described first triode ON, described first relay spring by normally-closed contact adhesive to normally opened contact, for described Two-stage control circuit, described three class control circuit and described active circuit are powered.
Preferably, described Two-stage control circuit comprises the second triode (Q3) and the second relay (K3), wherein said second relay is dpdt relay, when described Two-stage control signal is effective, described second triode ON, the solenoid of described second relay powers up, by the normally-closed contact of described second relay respectively adhesive on normally opened contact, now described Two-stage control circuit can output drive signal on the urgent coil of slave computer; Meanwhile, the described three class control signal of locking and described activation signal export corresponding drive singal.
Preferably, described three class control circuit comprises the 3rd triode (Q4) and the 3rd relay (K4), wherein, described 3rd relay is dpdt relay, when described three class control signal is effective, described 3rd triode ON, the solenoid of described 3rd relay powers up, by the normally-closed contact of described 3rd relay, adhesive is on normally opened contact respectively, and at this moment described three class control circuit gets final product output drive signal on the urgent coil of slave computer; Meanwhile, the described activation signal of locking exports corresponding drive singal.
Preferably, described activation control circuit comprises the 4th triode (Q5) and the 4th relay (K5), wherein said 4th relay is single-pole single-throw(SPST relay, when described master control signal is effective, and described Two-stage control signal and three class control signal are when being disarmed state, described 4th triode ON, the normally-closed contact adhesive of described 4th relay is on normally opened contact, and described activation control circuit gets final product output drive signal on the activation coil of slave computer.
Beneficial effect of the present invention is as follows:
1) have employed the three class control signal controlling with priority, ensure that activation signal is when various system exception, the accuracy of output.
2) by the mode of hardware, particularly adopt notching relay structure composition interlocking structure, make system response time fast, Stability Analysis of Structures, has good performance index.
Other features and advantages of the present invention will be set forth in the following description, and the feature and advantage of part become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Accompanying drawing only for illustrating the object of concrete embodiment, and does not think limitation of the present invention, and in whole accompanying drawing, identical reference symbol represents identical parts.
Fig. 1 is the method flow diagram adopting three class control to realize output signal reliability;
Fig. 2 is the signal interlock circuit with priority.
Embodiment
The present invention adopts the three-level protective to output drive signal; control signal is divided into master control signal, Two-stage control signal and three class control signal; when master control signal is invalid; Two-stage control signal and three class control signal and the equal conductively-closed of activation signal; when Two-stage control signal is effective; three class control signal and activation signal conductively-closed, when three class control signal is effective, activation signal conductively-closed.Only have when master control signal is effective, when Two-stage control signal is all invalid with three class control signal, activation signal could normally export, and substantially increases the accuracy of launch control equipment activation signal output.
The priority list of table 1 interlocking signal
| First priority | Master control signal |
| Second priority | Two-stage control signal |
| 3rd priority | Three pole control signals |
| Controlled signal | Activation signal |
Implementation method of the present invention is:
(1) master control signal locking that all control signals are exported
When master control signal is effective, other control signals could export corresponding driving, otherwise the output channel of other control signals will be cut off by master control signal.
(2) Two-stage control signal locking that three class control signal and activation signal are exported
When Two-stage control signal is effective, the output channel of three class control signal and activation signal will be cut off, now Two-stage control signal can output drive signal to the urgent coil of slave computer.
(3) three class control signal locking that activation signal is exported
When three class control signal is effective, the output channel of activation signal will be cut off, only have three class control signal can output drive signal to the urgent coil of slave computer.
(4) output of activation signal is by Two-stage control signal and any road locking of three class control signal
From (2) and (3), Two-stage control signal and any road of three class control signal effective time, the output of activation signal will by locking.
The invention allows for the preferred hardware circuit realizing said method, when adopting following circuit realiration aforesaid way, system response time is fast, and Stability Analysis of Structures, has good application value realistic.
(1), master control signal is to the locking of all control signal output channels
When master control signal is effective, just the output channel of Two-stage control signal, three class control signal and activation signal is connected, at this moment Two-stage control signal, three class control signal and activation signal could export driving downwards, as shown in the figure:
Only have when master control signal is effective, triode Q1 conducting, the solenoid of relay K 1 powers up, by K1 relay spring by normally-closed contact 2 adhesive to normally opened contact 1, for the positive pole of relay K 2, K3, K4 and K5 solenoid provides power supply.
(2), Two-stage control signal is to the locking of three class control signal and activation signal output channel
When Two-stage control signal is effective, the output channel of three class control signal cut off by dpdt relay K3, even if host computer have issued three class control signal, this equipment also can not export respective drive signal, as shown in the figure:
A () is when Two-stage control signal is effective, triode Q3 conducting, the solenoid of relay K 3 powers up, by the normally-closed contact 2,4 of relay K 3, adhesive is on normally opened contact 1,3 respectively, and the at this moment output of Two-stage control signal drives VCC28V just can output on the urgent coil of slave computer by contact 1;
(b) simultaneously locking output of three class control signal: the normally-closed contact 4 of relay K 3 disconnects contact, and the output channel of three class control signal is disconnected, even if at this moment three class control signal effectively, also cannot export driving on the urgent coil of slave computer;
C () be the also locking output of activation signal simultaneously: the normally-closed contact 2 of relay K 3 disconnects contact, make the output of activation signal lose power supply VCC28V.
(3) three class control signal is to the locking of activation signal output channel
When three class control signal is effective, the output channel of activation signal cut off by dpdt relay K4, even if host computer have issued activation signal, this equipment also can not export respective drive signal, as shown in the figure:
A () is when three class control signal is effective, triode Q4 conducting, the solenoid of relay K 4 powers up, by the normally-closed contact 2,4 of relay K 4, adhesive is on normally opened contact 1,3 respectively, and the at this moment output of three class control signal drives VCC24V just can output on the urgent coil of slave computer by contact 3;
(b) simultaneously locking output of activation signal: the normally-closed contact 2 of relay K 4 disconnects contact, the output channel of activation signal is disconnected, even if at this moment activation signal is effective, output due to activation signal loses power supply VCC28V, also cannot export driving on the activation coil of slave computer.
(4) output of activation signal is by Two-stage control signal and three class control signal locking
When Two-stage control signal or any one signal of three class control signal effective time, namely when normally-closed contact 2 adhesive of relay K 3 is to normally-closed contact 2 adhesive of normally opened contact 1 or relay K 4 to normally opened contact 1, capital makes the output channel of activation signal disconnect, guarantee activation signal can not Two-stage control signal or three class control signal effective time to slave computer activation coil export drive.
Claims (6)
1. one kind has the signal interlock circuit of priority, this circuit comprises master control signal control circuit, Two-stage control circuit, three class control circuit and active circuit, wherein said master control signal control circuit is used for when master control signal is set to invalid, by Two-stage control signal, three class control signal and activation signal locking; Described Two-stage control circuit is used for when described Two-stage control signal is set to effective, by described three class control signal and described activation signal locking; Described three class control circuit is used for when being placed in effective when described three class control signal, by described activation signal locking; Described active circuit is used for when described activation signal is not by locking, outwards exports and activates drive singal; By the control of above three class control circuit, ensure that the accuracy of the described activation drive singal of output.
2. the signal interlock circuit with priority according to claim 1, it is characterized in that: described master control signal control circuit comprises the first triode (Q1), first relay (K1), wherein said first relay is single-pole single-throw(SPST relay; When master control signal is effective, described first triode ON, described first relay spring by normally-closed contact adhesive to normally opened contact, for described Two-stage control circuit, described three class control circuit and described active circuit are powered.
3. according to the signal interlock circuit with priority of claim 1 or 2, it is characterized in that: described Two-stage control circuit comprises the second triode (Q3) and the second relay (K3), wherein said second relay is dpdt relay, when described Two-stage control signal is effective, described second triode ON, the solenoid of described second relay powers up, by the normally-closed contact of described second relay, adhesive is on normally opened contact respectively, and now described Two-stage control signal can output on the urgent coil of slave computer; Meanwhile, the locking output of described three class control signal and described activation signal.
4. the signal interlock circuit with priority arbitrary according to claim 1-3, it is characterized in that: described three class control circuit comprises the 3rd triode (Q4) and the 3rd relay (K4), wherein, described 3rd relay is dpdt relay, when described three class control signal is effective, described 3rd triode ON, the solenoid of described 3rd relay powers up, by the normally-closed contact of described 3rd relay, adhesive is on normally opened contact respectively, and at this moment namely described three class control signal is output on the urgent coil of slave computer; Meanwhile, the locking output of described activation signal.
5. the signal interlock circuit with priority arbitrary according to claim 1-3, it is characterized in that: described activation control circuit comprises the 4th triode (Q5) and the 4th relay (K5), wherein said 4th relay is single-pole single-throw(SPST relay, when described master control signal is effective, and described Two-stage control signal and three class control signal are when being disarmed state, described 4th triode ON, the normally-closed contact adhesive of described 4th relay is on normally opened contact, and namely described activation signal is output on the activation coil of slave computer.
6. the signal interlock circuit with priority according to claim 3 or 4, is characterized in that: described urgent coil is used for responding emergency control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410782318.XA CN104539278B (en) | 2014-12-16 | 2014-12-16 | A kind of circuit of the interlocking of the signal with priority for launching control equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410782318.XA CN104539278B (en) | 2014-12-16 | 2014-12-16 | A kind of circuit of the interlocking of the signal with priority for launching control equipment |
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| Publication Number | Publication Date |
|---|---|
| CN104539278A true CN104539278A (en) | 2015-04-22 |
| CN104539278B CN104539278B (en) | 2018-01-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112614743A (en) * | 2020-12-24 | 2021-04-06 | 通号万全信号设备有限公司 | Interlocking circuit of NOT gate control relay |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7567085B2 (en) * | 2003-04-23 | 2009-07-28 | Powertron Eng'g Co., Ltd. | Diagnosis for expected life of emergency power apparatus |
| CN202363927U (en) * | 2011-11-18 | 2012-08-01 | 四川湖山电器有限责任公司 | Intelligent efficient power supply module |
| CN103770655A (en) * | 2012-10-23 | 2014-05-07 | 广州汽车集团股份有限公司 | High-voltage protection system of power battery and vehicle |
| CN203774876U (en) * | 2014-04-09 | 2014-08-13 | 北京合纵科技股份有限公司 | Remote control circuit of power distribution automation terminal equipment |
-
2014
- 2014-12-16 CN CN201410782318.XA patent/CN104539278B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7567085B2 (en) * | 2003-04-23 | 2009-07-28 | Powertron Eng'g Co., Ltd. | Diagnosis for expected life of emergency power apparatus |
| CN202363927U (en) * | 2011-11-18 | 2012-08-01 | 四川湖山电器有限责任公司 | Intelligent efficient power supply module |
| CN103770655A (en) * | 2012-10-23 | 2014-05-07 | 广州汽车集团股份有限公司 | High-voltage protection system of power battery and vehicle |
| CN203774876U (en) * | 2014-04-09 | 2014-08-13 | 北京合纵科技股份有限公司 | Remote control circuit of power distribution automation terminal equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112614743A (en) * | 2020-12-24 | 2021-04-06 | 通号万全信号设备有限公司 | Interlocking circuit of NOT gate control relay |
| CN112614743B (en) * | 2020-12-24 | 2024-03-08 | 通号万全信号设备有限公司 | Non-gate control relay interlocking circuit |
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| Publication number | Publication date |
|---|---|
| CN104539278B (en) | 2018-01-23 |
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