CN104806107B - There is the door controller of safety relay - Google Patents
There is the door controller of safety relay Download PDFInfo
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- CN104806107B CN104806107B CN201510176530.6A CN201510176530A CN104806107B CN 104806107 B CN104806107 B CN 104806107B CN 201510176530 A CN201510176530 A CN 201510176530A CN 104806107 B CN104806107 B CN 104806107B
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Abstract
The present invention relates to a kind of door controller with safety relay, logic circuit is activated including safety relay, safety relay deexcitation logic circuit, RS latch and safety relay, the normally opened contact of safety relay is connected serially in the solution lock loop of door controller, safety relay activates logic circuit when the train signal of input meets door-opening condition simultaneously, effective activation signal is exported to the S end of RS latch, safety relay deexcitation logic circuit is when the train signal of input shows a normal switching-off and do not have effective door open command signal, effective deactivation signal is exported to the R end of RS latch, RS latch controls activation and the deexcitation of safety relay. 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 when having correct control signal, thus improve the safety and stability of door control system simultaneously.
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 necessarily reliability and safety to train apparatus are had higher requirement. And car door is the important component part of motor train unit carriage, the quality of its performance directly affects safety and the speed got on or off the bus of passenger that motor-car runs, and affect the efficiency that motor-car is runed. And the gating device of car door is particularly important for improving motor-car safety reliably.
Currently, the commonly used software of railway car automatically-controlled door realizes release and the activation of gating circuit, generally adopts motor as executive component, and when corresponding hard signal activates gating device software, output PWM controls motor and opens car door. Constantly upgrading and renewal along with train, train hard signal is on the increase, Train Control circuit and software also become increasingly complex, the gating device related in this patent, not only to process the signals such as speed that train control unit sends, switch gate, door release, also to process the signals such as the local closedown of door and unblock, by the judgement of these initial conditions and analysis output safety circuit are worked. Adopt the safety return circuit that traditional software processes 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 significantly 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, logic circuit is activated including safety relay, safety relay deexcitation logic circuit, RS latch and safety relay, safety relay has a normally opened contact, the normally opened contact of safety relay is connected serially in the solution lock loop of door controller, safety relay activates the input of logic circuit and is connected with train signal, safety relay activates the outfan of logic circuit and is connected with the S end of RS latch, safety relay activates logic circuit and the train signal of input is carried out logical operation, when train signal meets door-opening condition simultaneously, effective activation signal is exported to the S end of RS latch, 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 outfan of safety relay deexcitation logic circuit is connected with the R end of RS latch, the train signal of input is carried out logical operation by safety relay deexcitation logic circuit, when train signal shows a normal switching-off and does not have effective door open command signal, effective deactivation signal is exported to the R end of RS latch, otherwise export invalid deactivation signal to the R end of RS latch, the outfan of RS latch is connected with safety relay, control activation and the deexcitation of safety relay.
Limiting further, safety relay also has a normally-closed contact, normally opened contact and normally-closed contact hardware interlock, and the normally-closed contact of safety relay is connected serially to the door of train and is turned off safety return circuit.
Limiting further, the train signal being connected with safety relay activation logic circuit includes switch gate command signal, door state signal and door controller request release signal.
Limiting further, switch gate command signal includes collection control enabling signal E4 and gate signal E5 is closed in collection control; Door state signal includes that train speed meets signal E1, train speed is unsatisfactory for signal E2, door is isolated signal E11, car door sentinel plant operation signal E12, door are turned off being turned off signal E14 with locking signal E13 and door; Door controller request release signal includes car door release signal E3.
Limit further, safety relay activates logic circuit and includes five not gates and four and door, train speed meets signal E1, car door release signal E3, control enabling signal E4 and the first is connected collection with the input of door, train speed is unsatisfactory for signal E2 and collection control is closed gate signal E5 and is connected with the input of door respectively through the first not gate and the second not gate and first, door is isolated signal E11 and the second and is connected with the input of door, door is turned off and locking signal E13, door is turned off signal E14 and is connected with the input of door respectively through the 3rd not gate and the 4th not gate and second, first with the outfan of door, second is connected with the input of door with the outfan and the 3rd of door, car door sentinel plant operation signal E12 is connected with the input of door by the 5th not gate and the 4th, 3rd is connected with the input of door with the outfan and the 4th of door, 4th is connected with the S end of RS latch with the outfan of door.
Limiting further, the train signal being connected with safety relay deexcitation logic circuit includes door and is turned off and locking signal E13, door are turned off signal E14, train speed meets signal E1, train speed is unsatisfactory for signal E2, car door release signal E3, collection control enabling signal E4 and collection control pass gate signal E5.
Limit further, safety relay deexcitation logic circuit includes six not gates, five and door, two d type flip flops and one or, train speed meets signal E1, car door release signal E3, control enabling signal E4 and the first is connected collection with the input of door, train speed is unsatisfactory for signal E2 and collection control is closed gate signal E5 and is connected with the input of door respectively through the first not gate and the second not gate and first, door is turned off and locking signal E13, door is turned off signal E14 and the six and is connected with the input of door, 6th is connected with the outfan of door and the D end of the first d type flip flop, 6th is connected with the 7th not gate with the outfan of door simultaneously, the D end of the 7th non-gate output terminal and the second d type flip flop connects, the Q end of the second d type flip flop be simultaneously connected with the 8th not gate and the 8th with the Q end of input first d type flip flop of door be simultaneously connected with the 9th not gate and the 7th with door input, the outfan of the 8th not gate connects another input of the 7th and door, the outfan of the 9th not gate connects another input of the 8th and door, 7th is connected the input of first or door with the outfan and the 8th of door with the outfan of door, first is connected with the input of door by the 6th not gate and the 5th with the outfan of door, first or the outfan and the 5th of door be connected with the input of door, 5th exports deactivation 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 when having correct control signal, thus improve the safety and stability of door control system simultaneously.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described;
Fig. 1 is the circuit theory diagrams of the safety relay deexcitation logic circuit of the present invention;
Fig. 2 is the integrated circuit schematic diagram of the present invention;
Fig. 3 is the circuit theory diagrams of the 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 gate, 34. the 4th not gates, 35. the 5th not gates, 36. the 6th not gate, 37. the 7th not gate, 38. the 8th not gates, 39. the 9th not gates, 41. the first d type flip flop, 42. the second d type flip flop, 51. first nor gates, 52. second nor gates, 6. normally opened contact, 7. normally-closed contact.
Detailed description of the invention
As shown in Figure 1, 2, 3, a kind of door controller with safety relay, activates logic circuit, safety relay deexcitation logic circuit, RS latch and safety relay including safety relay.
Safety relay has a normally opened contact 6, the normally opened contact 6 of safety relay is connected serially in the solution lock loop of door controller, when gating device send signal by unlock loop start unlock cylinder solution lock door time, only safety relay is active, normally opened contact 6 closes, could starting solution lock cylinder, solution locks door. If door drive motor activates such as software failure in enabling direction when safety relay is in deactivation status, because the normally opened contact of safety relay 6 is in open mode, unblock cylinder cannot start solution and lock door, and car door cannot be opened. When train driving, safety relay is in deactivation status and is in deactivation status, solves lock loop and is interrupted, the accidental unlocking because software fault causes and enabling would not occurs.
Safety relay also has a normally-closed contact 7, normally opened contact 6 and normally-closed contact 7 hardware interlock, the normally-closed contact 7 of safety relay is connected serially to the door of train and is turned off safety return circuit, only when closing of the door and locking, and safety relay is in deactivation status, and normally-closed contact 7 closes, this door is turned off safety return circuit and just can close, train only when door is turned off safety return circuit Guan Bi, namely could be driven during the equal normal switching-off of all car doors.
Safety relay activates the input of logic circuit and is connected with train signal, safety relay activates the outfan of logic circuit and is connected with the S end of RS latch, safety relay activates logic circuit and the train signal of input is carried out logical operation, when train signal meets door-opening condition simultaneously, export effective activation signal to the S end of RS latch, 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 outfan of safety relay deexcitation logic circuit is connected with the R end of RS latch, the train signal of input is carried out logical operation by safety relay deexcitation logic circuit, when train signal shows a normal switching-off and does not have effective door open command signal, export effective deactivation signal to the R end of RS latch, otherwise export invalid deactivation signal to the R end of RS latch.
The outfan of RS latch is connected with safety relay, controls activation and the deexcitation of safety relay.
The train signal being connected with safety relay activation logic circuit includes switch gate command signal, door state signal and door controller request release signal.
Switch gate command signal includes collection control enabling signal E4 and gate signal E5 is closed in collection control; Door state signal includes that train speed meets signal E1, train speed is unsatisfactory for signal E2, door is isolated signal E11, car door sentinel plant operation signal E12, door are turned off being turned off signal E14 with locking signal E13 and door; Door controller request release signal includes car door release signal E3.
Safety relay activates logic circuit and includes five not gates and four and door, train speed meets signal E1, car door release signal E3, control enabling signal E4 and the first is connected collection with the input of door 11, train speed is unsatisfactory for signal E2 and collection control is closed gate signal E5 and is connected with the input of first with door 11 respectively through the first not gate 31 and the second not gate 32, door is isolated signal E11 and the second and is connected with the input of door 12, door is turned off and locking signal E13, door is turned off signal E14 and is connected with the input of second with door 12 respectively through the 3rd not gate 33 and the 4th not gate 34, first with the outfan of door 11, second is connected with the input of door 13 with the outfan and the 3rd of door 12, car door sentinel plant operation signal E12 is connected with the input of the 4th with door 14 by the 5th not gate 35, 3rd is connected with the input of door 14 with the outfan and the 4th of door 13, 4th is connected with the S end of RS latch with the outfan of door 14.
The train signal being connected with safety relay deexcitation logic circuit include door be turned off and locking signal E13, door are turned off signal E14, train speed meets signal E1, train speed is unsatisfactory for signal E2, car door release signal E3, collection control enabling signal E4 and collection control close gate signal E5.
Safety relay deexcitation logic circuit includes six not gates, five and door, two d type flip flops and one or, train speed meets signal E1, car door release signal E3, control enabling signal E4 and the first is connected collection with the input of door 11, train speed is unsatisfactory for signal E2 and collection control is closed gate signal E5 and is connected with the input of first with door 11 respectively through the first not gate 31 and the second not gate 32, door is turned off and locking signal E13, door is turned off signal E14 and the six and is connected with the input of door 16, 6th is connected with the outfan of door 16 and the D end of the first d type flip flop 41, 6th is connected with the 7th not gate 37 with the outfan of door 16 simultaneously, the D end of the 7th not gate 37 outfan and the second d type flip flop 42 connects, the Q end of the second d type flip flop 42 be simultaneously connected with the 8th not gate 38 and the 8th with the Q end of input first d type flip flop 41 of door 18 be simultaneously connected with the 9th not gate 39 and the 7th with door 17 input, the outfan of the 8th not gate 38 connects another input of the 7th and door 17, the outfan of the 9th not gate 39 connects another input of the 8th and door 18, 7th is connected the input of first or door 21 with the outfan and the 8th of door 17 with the outfan of door 18, first is connected with the input of the 5th with door 15 by the 6th not gate 36 with the outfan of door 11, first or the outfan and the 5th of door 21 be connected with the input of door 15, 5th exports deactivation signal R with door 15.
Train speed meets signal E1:E1=1 and represents train speed < 5km/h
Train speed is unsatisfactory for 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 door controller is sent enabling control signal by train control unit
Collection control is closed gate signal E5:E5=1 and is represented that door controller is sent pass gate control signal by train control unit
Door is isolated signal E11:E11=1 and represents that car door breaks down and by mechanical locking, and now car door is not controlled by door controller
Car door sentinel plant operation signal E12:E12=1 represents that car door by emergency release and can open Door by Hand
Door is turned off representing that car door arrives closed position and is blocked with locking signal E13:E13=1
Door is turned off signal E14:E14=1 and represents that car door arrives closed position
RESET: the reset signal that door controller is sent into, makes safety relay deexcitation logic circuit again reset startup
CLK: the clock signal that door controller is sent into
Work process is as follows:
When train speed meet signal E1, train speed is unsatisfactory for signal E2, car door release signal E3, collection control enabling signal E4, collection control close gate signal E5 obtain an effective enabling signal by first not gate the 31, second not gate 32, first and door 11 logical operation time, during such as E1=1, E2=0, E3=1, E4=1, E5=0, namely first sends a high level with door 11 is output as 1, represents now there is an effective enabling signal;When door be isolated signal E11, door be turned off with locking signal E13, door be turned off signal E14 obtain a door normal closed signal by the 3rd not gate the 33, the 4th not gate 34, second and door 12 time, such as E11=1, E13=0, E14=0, now second it is output as 1 with door 12, represents door normal switching-off; 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 with door 13 and the 4th and door 14 carry out logical operation, draw an effective activation signal S=1.
When door be turned off with locking signal E13, door be turned off signal E14 be 0 simultaneously time, 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 when being not in reset state, safety relay deexcitation logic circuit sends an effective deactivation signal R=1.
By this activation signal S and deactivation signal R by a RS latch being made up of first and second nor gate 51,52, finally give activation and the deactivation signal SAFE_ACTIVE of safety relay, control the action of safety relay, the activation of safety relay and deactivation signal SAFE_ACTIVE=1, safety relay activates, safety relay normally opened contact 6 closes, and normally-closed 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 normal switching-off, R '=1, S '=1, R=1, S=0, SAFE_ACTIVE=0, safety relay deexcitation; When obtaining an effective enabling signal, S '=0, R '=1, R=0, S=1, SAFE_ACTIVE=1, safety relay activates, and discharges enabling authority; When door is not turned off, 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 is again switched off, R '=1, S '=1, R=1, S=0, SAFE_ACTIVE=0, safety relay is deexcitation again, interrupts the solution lock loop of door controller.
The safety relay deexcitation when door controller power-off, interrupts solution lock loop and the SAFE_ACTIVE=0 of door controller, it is ensured that car door remains turned-off under powering-off state, guarantees safety.
Claims (7)
1. there is a door controller for safety relay, it is characterized in that: include safety relay and activate logic circuit, safety relay deexcitation logic circuit, RS latch and safety relay,
Safety relay has a normally opened contact, and the normally opened contact of safety relay is connected serially in the solution lock loop of door controller,
Safety relay activates the input of logic circuit and is connected with train signal, safety relay activates the outfan of logic circuit and is connected with the S end of RS latch, safety relay activates logic circuit and the train signal of input is carried out logical operation, when train signal meets door-opening condition simultaneously, effective activation signal is exported to the S end of RS latch, 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 outfan of safety relay deexcitation logic circuit is connected with the R end of RS latch, the train signal of input is carried out logical operation by safety relay deexcitation logic circuit, when train signal shows a normal switching-off and does not have effective door open command signal, effective deactivation signal is exported to the R end of RS latch, otherwise export invalid deactivation signal to the R end of RS latch
The outfan 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 normally-closed contact, normally opened contact and normally-closed contact hardware interlock, the normally-closed contact of safety relay is connected serially to the door of train and is turned off safety return circuit.
3. the door controller with safety relay according to claim 1 and 2, is characterized in that: the described train signal being connected with safety relay activation logic circuit includes 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 includes collection control enabling signal E4 and gate signal E5 is closed in collection control;
Described door state signal includes that train speed meets signal E1, train speed is unsatisfactory for signal E2, door is isolated signal E11, car door sentinel plant operation signal E12, door are turned off being turned off signal E14 with locking signal E13 and door;
Described door controller request release signal includes 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 includes five not gates and four and door, train speed meets signal E1, car door release signal E3, control enabling signal E4 and the first is connected collection with the input of door, train speed is unsatisfactory for signal E2 and collection control is closed gate signal E5 and is connected with the input of door respectively through the first not gate and the second not gate and first, door is isolated signal E11 and the second and is connected with the input of door, door is turned off and locking signal E13, door is turned off signal E14 and is connected with the input of door respectively through the 3rd not gate and the 4th not gate and second, first with the outfan of door, second is connected with the input of door with the outfan and the 3rd of door, car door sentinel plant operation signal E12 is connected with the input of door by the 5th not gate and the 4th, 3rd is connected with the input of door with the outfan and the 4th of door, 4th is connected with the S end of RS latch with the outfan of door.
6. the door controller with safety relay according to claim 1 and 2, is characterized in that: the described train signal being connected with safety relay deexcitation logic circuit include door be turned off and locking signal E13, door are turned off signal E14, train speed meets signal E1, train speed is unsatisfactory for signal E2, car door release signal E3, collection control enabling signal E4 and collection control 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 include six not gates, five with door, two d type flip flops and one or,
Train speed meet signal E1, car door release signal E3, collection control enabling signal E4 and the first is connected with the input of door, train speed be unsatisfactory for signal E2 and collect control pass gate signal E5 be connected with the input of door respectively through the first not gate and the second not gate and first,
Door is turned off and locking signal E13, door is turned off signal E14 and the six and is connected with the input of door, 6th is connected with the outfan of door and the D end of the first d type flip flop, 6th is connected with the 7th not gate with the outfan of door simultaneously, the D end of the 7th non-gate output terminal and the second d type flip flop connects, the Q end of the second d type flip flop be simultaneously connected with the 8th not gate and the 8th with the input of door, the Q end of the first d type flip flop be simultaneously connected with the 9th not gate and the 7th with door input, the outfan of the 8th not gate connects another input of the 7th and door, the outfan of the 9th not gate connects another input of the 8th and door, 7th is connected the input of first or door with the outfan and the 8th of door with the outfan of door, first is connected with the input of door by the 6th not gate and the 5th with the outfan of door, first or the outfan and the 5th of door be connected with the input of door, 5th exports deactivation signal R with door.
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| CN104806107B true CN104806107B (en) | 2016-06-08 |
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| CN112578698B (en) * | 2019-09-30 | 2021-11-12 | 比亚迪股份有限公司 | Vehicle door control apparatus and method |
| CN112924848B (en) * | 2021-01-25 | 2023-09-01 | 英孚康（浙江）工业技术有限公司 | Method and system for improving security of FCT test platform |
| CN114135188B (en) * | 2021-11-12 | 2023-07-18 | 通号城市轨道交通技术有限公司 | Platform door control circuit, method and device |
| CN114701528B (en) * | 2022-04-11 | 2023-05-02 | 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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