CN104806107A - Door controller with safety relay - Google Patents
Door controller with safety relay Download PDFInfo
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- CN104806107A CN104806107A CN201510176530.6A CN201510176530A CN104806107A CN 104806107 A CN104806107 A CN 104806107A CN 201510176530 A CN201510176530 A CN 201510176530A CN 104806107 A CN104806107 A CN 104806107A
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- 230000009849 deactivation Effects 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
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- 230000008569 process Effects 0.000 description 3
- 102220043329 rs113314808 Human genes 0.000 description 2
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Abstract
The invention relates to a door controller with a safety relay. The door controller comprises a safety relay activation logic circuit, a safety relay deactivation logic circuit, an RS (Relay Selector) latch and the safety relay, wherein a normally-opened contact of the safety relay is connected with an unlocking circuit of the door controller in series; when all inputted train signals simultaneously meet door opening conditions, the safety relay activation logic circuit outputs an effective activation signal to the S end of the RS latch; when the inputted train signals show normal closing and no effective door opening instruction, the safety relay deactivation logic circuit outputs an effective deactivation signal to the R end of the RS latch; the RS latch controls the activation and the deactivation of the safety relay. The door controller disclosed by the invention has the beneficial effects that the safety relay is added in the door controller; a train door is always kept closed during operation by a self-locking mode; meanwhile, the train door can be opened under the condition that accurate signals are found, so that the safety and the stability of the door control system are improved.
Description
Technical field
The present invention relates to a kind of door controller with safety relay.
Background technology
Along with rail traffic vehicles industrial expansion, locomotive overall trip speed improves constantly, and must have higher requirement to the reliability of train apparatus and safety.And car door is the important component part of motor train unit carriage, the quality of its performance directly affects safety that motor-car runs and the speed that passenger gets on or off the bus, and affect the efficiency that motor-car is runed.And the gating device of car door seems particularly important for the safety of raising motor-car reliably.
Current, railway car automatic door generally adopts software to realize release and the activation of gating circuit, usually adopts motor as executive component, when corresponding hard signal activates gating device software, exports PWM control motor and opens car door.Along with continuous upgrading and the renewal of train, train hard signal is on the increase, Train Control circuit and software also become increasingly complex, as the gating device related in this patent, not only to process the signal such as speed, switch gate, door release that train control unit is sent, also to process the signals such as the closedown of door this locality and unblock, by the judgement of these initial conditions with analyze output safety circuit working.The safety return circuit adopting traditional software to process door can become more and more difficult, and the security performance of door is relatively low.Therefore, work out a kind of practical hardware logic safety circuit reliably, meet the safe design requirement of gating device, there is very high practical value.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of door controller with safety relay, improves the safety of Train door switch.
The technical solution adopted for the present invention to solve the technical problems is: a kind of door controller with safety relay, comprise safety relay and activate logic circuit, safety relay deexcitation logic circuit, RS latch and safety relay, safety relay has a constant open contact, the constant open contact of safety relay is connected serially in the solution lock loop of door controller, the input that safety relay activates logic circuit is connected with train signal, the safety relay activation output of logic circuit is held with the S of RS latch and is connected, safety relay activates logic circuit and carries out logical operation to the train signal of input, when train signal meets door-opening condition simultaneously, S end to RS latch exports effective activation signal, otherwise export invalid activation signal to the S end of RS latch, the input of safety relay deexcitation logic circuit is connected with train signal respectively, the safety relay deexcitation output of logic circuit is held with the R of RS latch and is connected, safety relay deexcitation logic circuit carries out logical operation to the train signal of input, when train signal shows that door is normally closed and do not have effective door open command signal, R end to RS latch exports and is effectively deactivated signal, otherwise export invalid deexcitation signal to the R end of RS latch, the output of RS latch is connected with safety relay, control activation and the deexcitation of safety relay.
Further restriction, safety relay also has a constant close contact, constant open contact and constant close contact hardware interlock, and the constant close contact of safety relay is connected serially to the door closed safe loop of train.
Further restriction, activates with safety relay the train signal that logic circuit is connected and comprises switch gate command signal, door state signal and door controller request release signal.
Further restriction, switch gate command signal comprises collection control enabling signal E4 and gate signal E5 is closed in collection control; Door state signal comprises train speed and meets that signal E1, train speed do not meet signal E2, door is isolated signal E11, car door sentinel plant operation signal E12, door have been closed and locking signal E13 and door shutdown signal E14; Door controller request release signal comprises car door release signal E3.
Further restriction, safety relay activates logic circuit and comprises five not gates and four and door, train speed meets signal E1, car door release signal E3, collection control enabling signal E4 is connected with the input of door with first, train speed does not meet signal E2 and is connected with the input of door with first with the second not gate respectively by the first not gate with collection control pass gate signal E5, door is isolated signal E11 and is connected with the input of door with second, door has been closed and locking signal E13, door shutdown signal E14 is connected with the input of door with second with the 4th not gate respectively by the 3rd not gate, first with the output of door, second is connected with the input of door with the 3rd with the output of door, car door sentinel plant operation signal E12 is connected with the input of door with the 4th by the 5th not gate, 3rd is connected with the input of door with the 4th with the output of door, 4th to hold with the S of RS latch with the output of door and is connected.
Further restriction, is deactivated with safety relay train signal that logic circuit is connected and comprises door and closed and meet signal E1, train speed with locking signal E13, door shutdown signal E14, train speed and do not meet signal E2, car door release signal E3, collect to control enabling signal E4 and collect to control and close gate signal E5.
Further restriction, safety relay deexcitation logic circuit comprises six not gates, five and door, two d type flip flops and one or, train speed meets signal E1, car door release signal E3, collection control enabling signal E4 is connected with the input of door with first, train speed does not meet signal E2 and is connected with the input of door with first with the second not gate respectively by the first not gate with collection control pass gate signal E5, door has been closed and locking signal E13, door shutdown signal E14 is connected with the input of door with the 6th, 6th to hold with the D of the first d type flip flop with the output of door and is connected, 6th is connected with the 7th not gate with the output of door simultaneously, 7th non-gate output terminal is held with the D of the second d type flip flop and is connected, the Q end of the second d type flip flop connects the 8th not gate and the 8th simultaneously and to hold with the Q of input first d type flip flop of door and be connected the 9th not gate and the 7th and door input simultaneously, the output of the 8th not gate connects another input of the 7th and door, the output of the 9th not gate connects another input of the 8th and door, 7th is connected the input of first or door with the output and the 8th of door with the output of door, first is connected with the input of door with the 5th by the 6th not gate with the output of door, first or the output of door be connected with the input of door with the 5th, 5th exports be deactivated signal R with door.
The invention has the beneficial effects as follows: in gating device, add safety relay, car door is kept to remain normally closed at run duration by the mode of self-locking, guarantee that car door is only opened under the condition with correct control signal simultaneously, thus improve the safety and stability of door control system.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described;
Fig. 1 is the circuit theory diagrams of safety relay of the present invention deexcitation logic circuit;
Fig. 2 is integrated circuit schematic diagram of the present invention;
Fig. 3 is the circuit theory diagrams of safety relay of the present invention;
Wherein, 11. first and door, 12. second and door, 13. the 3rd and door, 14. the 4th and door, 15. the 5th and door, 16. the 6th and door, 17. the 7th and door, 18. the 8th and door, 21. first or door, 31. first not gates, 32. second not gates, 33. the 3rd not gates, 34. the 4th not gates, 35. the 5th not gates, 36. the 6th not gates, 37. the 7th not gates, 38. the 8th not gates, 39. the 9th not gates, 41. first d type flip flops, 42. second d type flip flops, 51. first nor gates, 52. second nor gates, 6. constant open contact, 7. constant close contact.
Detailed description of the invention
As shown in Figure 1, 2, 3, a kind of door controller with safety relay, comprises safety relay and activates logic circuit, safety relay deexcitation logic circuit, RS latch and safety relay.
Safety relay has a constant open contact 6, the constant open contact 6 of safety relay is connected serially in the solution lock loop of door controller, when gating device sends signal by unlocking loop start unblock cylinder unlocking doors, safety relay is only had to be in state of activation, constant open contact 6 closes, unlock cylinder could be started, unlocking doors.If door drive motors activates as software failure in enabling direction when safety relay is in deactivation status, because the constant open contact of safety relay 6 is in open mode, unlocking cylinder cannot start unlocking doors, and car door cannot be opened.When train driving, safety relay is in deactivation status and is in deactivation status, separates lock loop and is interrupted, would not occur the accidental unlocking because software fault causes and enabling.
Safety relay also has a constant close contact 7, constant open contact 6 and constant close contact 7 hardware interlock, the constant close contact 7 of safety relay is connected serially to the door closed safe loop of train, only have when closing of the door and locking, and safety relay is in deactivation status, constant close contact 7 closes, and this door closed safe loop just can close, train only when door closed safe circuit closed, could be driven when namely all car doors are all normally closed.
The input that safety relay activates logic circuit is connected with train signal, the safety relay activation output of logic circuit is held with the S of RS latch and is connected, safety relay activates logic circuit and carries out logical operation to the train signal of input, when train signal meets door-opening condition simultaneously, S end to RS latch exports effective activation signal, otherwise exports invalid activation signal to the S end of RS latch.
The input of safety relay deexcitation logic circuit is connected with train signal respectively, the safety relay deexcitation output of logic circuit is held with the R of RS latch and is connected, safety relay deexcitation logic circuit carries out logical operation to the train signal of input, when train signal shows that door is normally closed and do not have effective door open command signal, R end to RS latch exports and is effectively deactivated signal, otherwise exports invalid deexcitation signal to the R end of RS latch.
The output of RS latch is connected with safety relay, controls activation and the deexcitation of safety relay.
Activate with safety relay the train signal that logic circuit is connected and comprise switch gate command signal, door state signal and door controller request release signal.
Switch gate command signal comprises collection control enabling signal E4 and gate signal E5 is closed in collection control; Door state signal comprises train speed and meets that signal E1, train speed do not meet signal E2, door is isolated signal E11, car door sentinel plant operation signal E12, door have been closed and locking signal E13 and door shutdown signal E14; Door controller request release signal comprises car door release signal E3.
Safety relay activates logic circuit and comprises five not gates and four and door, train speed meets signal E1, car door release signal E3, collection control enabling signal E4 is connected with the input of door 11 with first, train speed does not meet signal E2 and is connected with the input of door 11 with first with the second not gate 32 respectively by the first not gate 31 with collection control pass gate signal E5, door is isolated signal E11 and is connected with the input of door 12 with second, door has been closed and locking signal E13, door shutdown signal E14 is connected with the input of door 12 with second with the 4th not gate 34 respectively by the 3rd not gate 33, first with the output of door 11, second is connected with the input of door 13 with the 3rd with the output of door 12, car door sentinel plant operation signal E12 is connected with the input of door 14 with the 4th by the 5th not gate 35, 3rd is connected with the input of door 14 with the 4th with the output of door 13, 4th to hold with the S of RS latch with the output of door 14 and is connected.
Be deactivated with safety relay train signal that logic circuit is connected to comprise door and closed and meet signal E1, train speed with locking signal E13, door shutdown signal E14, train speed and do not meet signal E2, car door release signal E3, collect to control enabling signal E4 and collect to control and close gate signal E5.
Safety relay deexcitation logic circuit comprises six not gates, five and door, two d type flip flops and one or, train speed meets signal E1, car door release signal E3, collection control enabling signal E4 is connected with the input of door 11 with first, train speed does not meet signal E2 and is connected with the input of door 11 with first with the second not gate 32 respectively by the first not gate 31 with collection control pass gate signal E5, door has been closed and locking signal E13, door shutdown signal E14 is connected with the input of door 16 with the 6th, 6th to hold with the D of the first d type flip flop 41 with the output of door 16 and is connected, 6th is connected with the 7th not gate 37 with the output of door 16 simultaneously, 7th not gate 37 output is held with the D of the second d type flip flop 42 and is connected, the Q end of the second d type flip flop 42 connects the 8th not gate 38 and the 8th simultaneously and to hold with the Q of input first d type flip flop 41 of door 18 and be connected the 9th not gate 39 and the 7th and door 17 input simultaneously, the output of the 8th not gate 38 connects another input of the 7th and door 17, the output of the 9th not gate 39 connects another input of the 8th and door 18, 7th to be connected the input of first or door 21 with the output and the 8th of door 17 with the output of door 18, first is connected with the input of door 15 with the 5th by the 6th not gate 36 with the output of door 11, first or the output of door 21 be connected with the input of door 15 with the 5th, 5th exports be deactivated signal R with door 15.
Train speed meets signal E1:E1=1 and represents train speed <5km/h
Train speed does not meet signal E2:E2=1 and represents train speed >15km/h
Car door release signal E3:E3=1 represents that car door discharges
Collection control enabling signal E4:E4=1 represents that train control unit sends enabling control signal to door controller
Collection control is closed gate signal E5:E5=1 and is represented that train control unit sends pass gate control signal to door controller
Door is isolated signal E11:E11=1 and represents that car door breaks down and by mechanical locking, now car door does not control by door controller
Car door sentinel plant operation signal E12:E12=1 represents that car door also can be opened Door by Hand by emergency release
Door has been closed and has been represented that car door arrives fastening position and is blocked with locking signal E13:E13=1
Door shutdown signal E14:E14=1 represents that car door arrives fastening position
RESET: the reset signal that door controller is sent into, makes safety relay be deactivated logic circuit and again to reset startup
CLK: the clock signal that door controller is sent into
The course of work is as follows:
When train speed meet that signal E1, train speed do not meet signal E2, car door release signal E3, collection control enabling signal E4, collection control close gate signal E5 by the first not gate 31, second not gate 32, first and door 11 logical operation obtain an effective enabling signal time, during as E1=1, E2=0, E3=1, E4=1, E5=0, first to send that namely a high level export with door 11 be 1, represents now there is an effective enabling signal; When door be isolated signal E11, door closed and locking signal E13, door shutdown signal E14 by the 3rd not gate 33, the 4th not gate 34, second and door 12 obtain a door normal closed signal time, as E11=1, E13=0, E14=0, now second to export be 1 with door 12, and expression door is normally closed; Then by first with door 11 and second with the output signal of door 12 and car door sentinel plant operation signal E12 by the 3rd and door 13 and the 4th and door 14 carry out logical operation, draw an effective activation signal S=1.
When to have closed with locking signal E13, door shutdown signal E14 be 0 to door simultaneously, first or output signal R '=1 of door 41; As E1=1, E2=0, E3=1, E4=1, E5=0, output signal S '=1 of the 6th not gate 36; And safety relay deexcitation logic circuit is not when being in reset mode, safety relay deexcitation logic circuit sends an effectively deexcitation signal R=1.
By the RS latch that this activation signal S is made up of first and second nor gate 51,52 by with deexcitation signal R, finally obtain the activation of safety relay and deexcitation signal SAFE_ACTIVE, control the action of safety relay, activation and the deexcitation signal SAFE_ACTIVE=1 of safety relay, safety relay activates, safety relay constant open contact 6 closes, and constant close contact 7 is opened.
Truth table is as follows:
| S’ | S | R’ | R | SAFE_ACTIVE |
| 1 | 0 | 1 | 1 | 0 |
| 0 | 1 | 1 | 0 | 1 |
| 0 | 0 | 0 | 0 | RS latch state is constant |
| 1 | 0 | 0 | 0 | RS latch state is constant |
Safety relay of the present invention can complete following functions: when door is normally closed, R '=1, S '=1, R=1, S=0, SAFE_ACTIVE=0, and safety relay is deactivated; When obtaining an effective enabling signal, S '=0, R '=1, R=0, S=1, SAFE_ACTIVE=1, safety relay activates, release enabling authority; When door is not closed, R '=0, S '=0, R=0, S=0, RS latch state is constant, SAFE_ACTIVE=1, keeps this safety relay to activate all the time; Until after door closes again, R '=1, S '=1, R=1, S=0, SAFE_ACTIVE=0, safety relay is deactivated again, interrupts the solution lock loop of door controller.
When door controller power-off, safety relay deexcitation, interrupts solution lock loop and the SAFE_ACTIVE=0 of door controller, ensures that car door keeps closing under powering-off state, guarantees safety.
Claims (7)
1. there is a door controller for safety relay, it is characterized in that: comprise safety relay and activate logic circuit, safety relay deexcitation logic circuit, RS latch and safety relay,
Safety relay has a constant open contact, and the constant open contact of safety relay is connected serially in the solution lock loop of door controller,
The input that safety relay activates logic circuit is connected with train signal, the safety relay activation output of logic circuit is held with the S of RS latch and is connected, safety relay activates logic circuit and carries out logical operation to the train signal of input, when train signal meets door-opening condition simultaneously, S end to RS latch exports effective activation signal, otherwise export invalid activation signal to the S end of RS latch
The input of safety relay deexcitation logic circuit is connected with train signal respectively, the safety relay deexcitation output of logic circuit is held with the R of RS latch and is connected, safety relay deexcitation logic circuit carries out logical operation to the train signal of input, when train signal shows that door is normally closed and do not have effective door open command signal, R end to RS latch exports and is effectively deactivated signal, otherwise export invalid deexcitation signal to the R end of RS latch
The output of RS latch is connected with safety relay, controls activation and the deexcitation of safety relay.
2. the door controller with safety relay according to claim 1, it is characterized in that: described safety relay also has a constant close contact, constant open contact and constant close contact hardware interlock, the constant close contact of safety relay is connected serially to the door closed safe loop of train.
3. the door controller with safety relay according to claim 1 and 2, is characterized in that: described activate the train signal that logic circuit is connected with safety relay and comprise switch gate command signal, door state signal and door controller request release signal.
4. the door controller with safety relay according to claim 3, is characterized in that:
Described switch gate command signal comprises collection control enabling signal E4 and gate signal E5 is closed in collection control;
Described door state signal comprises train speed and meets that signal E1, train speed do not meet signal E2, door is isolated signal E11, car door sentinel plant operation signal E12, door have been closed and locking signal E13 and door shutdown signal E14;
Described door controller request release signal comprises car door release signal E3.
5. the door controller with safety relay according to claim 4, it is characterized in that: described safety relay activates logic circuit and comprises five not gates and four and door, train speed meets signal E1, car door release signal E3, collection control enabling signal E4 is connected with the input of door with first, train speed does not meet signal E2 and is connected with the input of door with first with the second not gate respectively by the first not gate with collection control pass gate signal E5, door is isolated signal E11 and is connected with the input of door with second, door has been closed and locking signal E13, door shutdown signal E14 is connected with the input of door with second with the 4th not gate respectively by the 3rd not gate, first with the output of door, second is connected with the input of door with the 3rd with the output of door, car door sentinel plant operation signal E12 is connected with the input of door with the 4th by the 5th not gate, 3rd is connected with the input of door with the 4th with the output of door, 4th to hold with the S of RS latch with the output of door and is connected.
6. the door controller with safety relay according to claim 1 and 2, is characterized in that: described be deactivated train signal that logic circuit is connected with safety relay and comprise door and closed and meet signal E1, train speed with locking signal E13, door shutdown signal E14, train speed and do not meet signal E2, car door release signal E3, collect to control enabling signal E4 and collect to control and close gate signal E5.
7. the door controller with safety relay according to claim 6, is characterized in that: described safety relay deexcitation logic circuit comprise six not gates, five with door, two d type flip flops and one or,
Train speed meets signal E1, car door release signal E3, collection control enabling signal E4 is connected with the input of door with first, and train speed does not meet signal E2 and is connected with the input of door with first with the second not gate respectively by the first not gate with collection control pass gate signal E5,
Door has been closed and locking signal E13, door shutdown signal E14 is connected with the input of door with the 6th, 6th to hold with the D of the first d type flip flop with the output of door and is connected, 6th is connected with the 7th not gate with the output of door simultaneously, 7th non-gate output terminal is held with the D of the second d type flip flop and is connected, the Q end of the second d type flip flop connects the 8th not gate and the 8th simultaneously and to hold with the Q of input first d type flip flop of door and be connected the 9th not gate and the 7th and door input simultaneously, the output of the 8th not gate connects another input of the 7th and door, the output of the 9th not gate connects another input of the 8th and door, 7th is connected the input of first or door with the output and the 8th of door with the output of door, first is connected with the input of door with the 5th by the 6th not gate with the output of door, first or the output of door be connected with the input of door with the 5th, 5th exports be deactivated signal R with door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510176530.6A CN104806107B (en) | 2015-04-14 | 2015-04-14 | There is the door controller of safety relay |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510176530.6A CN104806107B (en) | 2015-04-14 | 2015-04-14 | There is the door controller of safety relay |
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| CN104806107A true CN104806107A (en) | 2015-07-29 |
| CN104806107B CN104806107B (en) | 2016-06-08 |
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| CN201510176530.6A Active CN104806107B (en) | 2015-04-14 | 2015-04-14 | There is the door controller of safety relay |
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| CN112578698A (en) * | 2019-09-30 | 2021-03-30 | 比亚迪股份有限公司 | Vehicle door control apparatus and method |
| CN112924848A (en) * | 2021-01-25 | 2021-06-08 | 英孚康（浙江）工业技术有限公司 | Method and system for improving safety of FCT test platform |
| CN114135188A (en) * | 2021-11-12 | 2022-03-04 | 通号城市轨道交通技术有限公司 | Platform door control circuit, method and device |
| CN114701528A (en) * | 2022-04-11 | 2022-07-05 | 中车株洲电力机车有限公司 | Rail transit vehicle and door state detection circuit and detection method thereof |
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| Publication number | Publication date |
|---|---|
| CN104806107B (en) | 2016-06-08 |
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