CN115749474A - Vehicle door safety interlocking circuit capable of automatically supplying power redundantly under fault condition - Google Patents

Abstract

The invention discloses a vehicle door safety interlocking circuit capable of automatically supplying power redundantly under the condition of a fault, which comprises a near-end control circuit and a far-end control circuit, wherein the near-end control circuit comprises a self-resetting delay relay CLCBR, a circuit breaker CLCB, a self-resetting circuit breaker CLCBRCB, a redundant circuit breaker CLCB _1, a relay DIR2, a vehicle door isolating switch LOS, a plurality of activation relays COR1 and a plurality of vehicle door controllers EDCU. After the trip of the remote circuit breaker is detected, automatic redundant power supply can be realized through a brand new control circuit, the situation that the driver operates the bypass switch to limit the speed to clear passengers is avoided, the vehicle can run to the destination and return to the garage, and the situation that the vehicle clears the passengers due to accidental short circuit or overcurrent fault in the vehicle door interlocking circuit to cause large operation influence can be effectively avoided.

Description

Vehicle door safety interlocking circuit capable of automatically supplying power redundantly under fault condition

Technical Field

The invention relates to the field of electrical control circuit design of rail transit vehicles, in particular to a vehicle door safety interlocking circuit capable of automatically supplying power redundantly under the condition of a fault.

Background

The vehicle door interlocking control circuit is an urban rail transit vehicle safety control circuit, and mainly connects all door closing in-place and door locking in-place travel switches of the doors of the whole train in series respectively, and relays at the home end of the vehicle door safety interlocking control circuit are all powered by a far-end circuit breaker.

The vehicle door safety interlocking control circuit is a key circuit for vehicle electrical control, a safety interlocking control relay contact is used as a safety signal input for signal control and traction of a motor vehicle, when the vehicle door safety interlocking circuit breaks down, the vehicle can trigger maximum common braking in an automatic driving mode to influence vehicle operation, and when the vehicle door safety interlocking control circuit breaks down in a starting stage, a train cannot establish a traction permission signal, the vehicle cannot start, so that the redundancy of the vehicle door safety interlocking control circuit under the fault condition is related to the reliability of vehicle operation.

At present, an existing door interlock control circuit is shown in fig. 3: all the vehicle door closing in-place travel switches and the locking in-place travel switches on one side of the whole train are connected in series in a vehicle door safety interlocking circuit, in order to prevent the single vehicle door travel switch contact from being failed to influence the work of the vehicle door safety interlocking control circuit, each vehicle door is provided with an independent vehicle door isolating switch, when the single door is failed, the failed contact can be bypassed by the vehicle door isolating switch, the vehicle door circuit is reestablished, the safety interlocking control circuit is powered by a remote cab CLCB _ B, and the control circuit is powered by local cab vehicle door safety interlocking relays DIR _ B1 and DIR _ B2 after being established.

However, in the existing car door safety interlocking control circuit technology, if a far-end breaker trips due to accidental overcurrent faults in a door safety interlocking circuit, a driver cannot effectively reset the breaker in a far-end cab in time in the current same cab to cause a car to lose the door safety interlocking circuit, the car door interlocking relay is a safety control relay, and is a necessary condition for car traction, the driver needs to open a door safety interlocking circuit bypass switch for the car to continue traction, after the bypass switch is operated, the train runs at a speed limit of 30-60km/h, and the train needs to clear passengers at a nearby station for not influencing a car running schedule.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

Aiming at the problems in the related art, the invention provides a vehicle door safety interlocking circuit capable of automatically supplying power redundantly under the condition of a fault, which is used for avoiding larger operation influence caused by vehicle clearance due to accidental short circuit or overcurrent fault in the vehicle door interlocking circuit.

Therefore, the invention adopts the following specific technical scheme:

a vehicle door safety interlocking circuit capable of automatically supplying power redundantly under the condition of a fault comprises a near-end control circuit and a far-end control circuit which are connected with each other, the structure of the near-end control circuit is the same as that of the far-end control circuit, and the near-end control circuit comprises a self-reset delay relay CLCBR, a circuit breaker CLCB, a self-reset circuit breaker CLCBRCB, a redundant circuit breaker CLCB _1, a relay DIR2, a vehicle door isolating switch LOS, a plurality of activating relays COR1 and a plurality of vehicle door controllers EDCU;

the self-reset delay relay CLCBR is connected with auxiliary contacts of the circuit breaker CLCB and the self-reset circuit breaker CLCBRCB in series and then connected with a power supply in parallel, the relay DIR1 is connected with a plurality of activation relays COR1 and the circuit breaker CLCB in series and then connected with the power supply in parallel, and the relay DIR1 is connected with the relay DIR2 in parallel; the redundant circuit breaker CLCB _1 is connected with an auxiliary contact of a self-resetting delay relay CLCBR in the remote control circuit in series and then connected with the circuit breaker CLCB in parallel, and the auxiliary contact of the self-resetting delay relay CLCBR is connected with the redundant circuit breaker CLCB _1 in the remote control circuit in series and then connected with the circuit breaker CLCB in the remote control circuit in parallel; the car door controllers EDCU are connected in series and then connected in parallel with the activation relay COR1, a car door isolating switch LOS is connected in parallel between two ends of the car door controllers EDCU, and the car door controllers EDCU are composed of a car door closing in-place travel switch DLS1 and a car door locking in-place travel switch DLS2 which are connected in series.

Furthermore, a redundant circuit breaker CLCB _1 in the near-end control circuit is connected in series with a normally open contact of a self-resetting time delay relay CLCBR in the far-end control circuit and then is connected in parallel with a circuit breaker CLCB in the near-end control circuit for power supply, and the vehicle door interlocking control circuit is protected by a circuit breaker together.

Furthermore, the vehicle door interlocking control loop can automatically recover control when accidental faults occur. Occasional faults include over-current faults or short-circuit faults. The automatic recovery control of the interlocking control loop of the vehicle door when accidental faults occur comprises the following steps:

the circuit breaker CLCB of the far-end cab is tripped off, the DC110V supplies power to the self-resetting delay relay CLCBR through the self-resetting circuit breaker CLCBRCB, and a normally open contact of the self-resetting delay relay CLCBR is closed after 10 seconds, so that the current redundant circuit breaker CLCB _1 of the cab automatically takes over the circuit breaker protection function of the vehicle door interlocking column control circuit in a delayed mode.

Further, a door closing position travel switch DLS1 is used for outputting an instruction indicating whether the door is closed in position, and a door lock position travel switch DLS2 is used for outputting an instruction indicating whether the door is locked in position.

Furthermore, the vehicle door controller EDCU and the vehicle door isolating switches LOS which are connected in parallel at two ends of the vehicle door controller EDCU form a door unit, and closing position locking contacts and locking position locking contacts of all the door units on the same side are connected in series to form a safety interlocking train line.

Further, the door disconnecting switch LOS is used for cutting off contact bypasses of a door-closed-position travel switch DLS1 and a door-lock-in-position travel switch DLS2 of the unit after the door unit is released.

The invention has the beneficial effects that:

1) By designing the safety interlocking control circuit of the fully new vehicle door, after accidental short circuit or overcurrent fault occurs in the interlocking circuit of the vehicle door, the circuit can realize automatic redundant power supply through the brand new control circuit after the trip of the remote circuit breaker is detected, so that the situation that the driver operates a bypass switch to limit the speed to clear passengers is avoided, the vehicle can run to a destination return warehouse, and the great operation influence on the situation that the vehicle clears the passengers due to the accidental short circuit or overcurrent fault occurs in the interlocking circuit of the vehicle door can be effectively avoided.

2) The invention effectively improves the fault redundancy of the vehicle door safety interlocking loop and also improves the operation reliability, and particularly for a first-line city with more subway lines, passenger clearing and rescue at each time have influence on annual operation indexes, the operation indexes are related to economic indexes, and a subway company examines vehicle manufacturers according to contract requirements and has certain economic loss to vehicle manufacturers.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is one of the circuit diagrams of a vehicle door safety interlock circuit capable of automatic redundant power supply in the event of a fault in accordance with an embodiment of the present invention;

FIG. 2 is a second circuit diagram of a door safety interlock circuit capable of automatic redundant power supply in the event of a fault in accordance with an embodiment of the present invention;

fig. 3 is a circuit diagram of a prior art door interlock control circuit.

Detailed Description

For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the invention, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.

According to an embodiment of the present invention, a vehicle door safety interlock circuit is provided that is capable of automatic redundant power supply in the event of a fault.

The present invention will be further described with reference to the accompanying drawings and specific embodiments, as shown in fig. 1-2, a vehicle door safety interlock circuit capable of automatically supplying power redundantly under fault conditions according to an embodiment of the present invention includes a near-end control circuit and a far-end control circuit that are connected to each other, and the near-end control circuit and the far-end control circuit have the same structure, and the near-end control circuit includes a self-resetting delay relay CLCBR, a circuit breaker CLCB, a self-resetting circuit breaker CLCBRCB, a redundant circuit breaker CLCB _1, a relay DIR2, a vehicle door isolating switch LOS, a plurality of activation relays COR1 and a plurality of vehicle door controllers EDCU;

the self-reset delay relay CLCBR is connected with auxiliary contacts of the circuit breaker CLCB and the self-reset circuit breaker CLCBRCB in series and then connected with a power supply in parallel, the relay DIR1 is connected with a plurality of activation relays COR1 and the circuit breaker CLCB in series and then connected with the power supply in parallel, and the relay DIR1 is connected with the relay DIR2 in parallel;

the redundant circuit breaker CLCB _1 is connected with an auxiliary contact of a self-resetting delay relay CLCBR in the remote control circuit in series and then connected with the circuit breaker CLCB in parallel, and the auxiliary contact of the self-resetting delay relay CLCBR is connected with the redundant circuit breaker CLCB _1 in the remote control circuit in series and then connected with the circuit breaker CLCB in the remote control circuit in parallel;

the car door controllers EDCU are connected in series and then connected in parallel with the activation relay COR1, a car door isolating switch LOS is connected in parallel between two ends of the car door controllers EDCU, and the car door controllers EDCU are composed of a car door closing in-place travel switch DLS1 and a car door locking in-place travel switch DLS2 which are connected in series.

In one embodiment, the door controller EDCU and the door isolating switches LOS connected in parallel to both ends thereof constitute a door unit, and the door closing position travel switch DLS1 is used for outputting an instruction indicating whether the door is closed or not, and the door locking position travel switch DLS2 is used for outputting an instruction indicating whether the door is locked or not.

In one embodiment, the door safety interlock control normal logic is as follows:

each gate unit outputs a state contact (DLS 1) indicating whether a gate is closed in place or not and a contact (DLS 2) indicating whether an index gate is locked in place or not, all the closed-in-place locking positions and the locked-in-place contacts of all the gate units on the same side are connected in series to form a safety interlocking train line, if a near-end driver cab is activated, a near-end activation relay COR1 is activated, a far-end activation relay COR1 is not activated, and the safety interlocking loop establishing process is as follows: the control voltage of the remote TC vehicle 110V → a remote CO1 normally closed contact → a safety interlocking train line → a near CO1 normally open contact → finally drives near door safety interlocking relays DIR1 and DIR2, thus forming a whole door safety interlocking loop. Additionally, if one door unit is released, the door disconnect switch LOS will remove the contact bypass of the door close position travel switch DLS1 and the door lock position travel switch DLS2 of that unit.

The traction system and the ATC system can send out traction instructions. No pull is allowed until the door is not closed. It is possible to improve the safety of the vehicle operation by giving all the doors the closing contact information to them.

In one embodiment, the door interlock control loop is capable of automatically resuming control in the event of a contingent fault.

Specifically, the automatic recovery control logic when the accidental fault occurs in the vehicle door safety interlocking loop is as follows:

the remote TC vehicle is provided with an electric delay relay (self-reset delay relay CLCBR), a normally open contact of the CLCBR relay is connected with a local redundant circuit breaker CLCB _1 in series and then is connected with the local CLCB in parallel to supply power, and the vehicle door interlocking control loop is protected by the circuit breaker jointly. When accidental overcurrent or short-circuit faults occur in the vehicle door interlocking column control circuit, the circuit breaker CLCB of the far-end cab is tripped, the DC110V supplies power to the self-resetting delay relay CLCBR through the self-resetting circuit breaker CLCBRCB, and after 10 seconds, the normally open contact of the self-resetting delay relay CLCBR is closed, so that the current cab redundancy circuit breaker CLCB _1 automatically takes over the circuit breaker protection function of the vehicle door interlocking column control circuit in a delayed mode. No manual operation is required by a driver.

If the near-end CLCB _1 automatically takes over the circuit breaker protection function of the vehicle door interlocking column control loop, the CLCB _1 is subjected to accidental fault tripping again, and at the moment, the CLCB _1 is arranged at the operation end, so that the function of manually resetting the CLCB _1 at the operation end by personnel is still provided. Through the function realization, even if the vehicle encounters the fault, the vehicle still does not need to be operated continuously by a bypass switch, the passenger clearing fault of the vehicle is avoided, and the influence on the vehicle operation is reduced.

In one embodiment, the invention also comprises a part for proving that the invention can fully satisfy the redundant power supply control function of the breaker failure of the accidental failure of the vehicle door safety interlocking control loop after being implemented, and the specific steps are as follows:

after the vehicle is awakened, the double bows are lifted, 2 operators with on-duty certificates can be provided under the condition that each system can work normally, the implementation of the invention can be verified only by a universal meter without an additional special tool, and the operation steps are as follows:

step 1: one operating electrician is in the current cab, the other electrician is in the remote cab, and all the broken circuits of the vehicle are checked and determined to be closed.

Step 2: and (3) operating an electrician to wake up the vehicle in the current cab, activating the current cab through a driver controller key, measuring the voltage of a COR1 of an activation relay of the cab by using a universal meter, and determining that the voltage at two ends of the relay is greater than DC77V, so that the current cab is in an activation state.

And 3, step 3: at present, an electrician operating in the cab operates a door closing button on the cab to confirm that all doors (including a side door of the cab) are closed.

And 4, step 4: the current universal meter for cab electricians measures the coil voltage of DIR1 and DIR2, and the voltage is more than DC77V to determine the electric state. And the remote cab operation electrician also measures the coil voltages of DIR1 and DIR2 measured by the remote cab, and the voltage is 0V to confirm that the remote cab is in a power-off state.

And 5, step 5: and simulating that the remote cab operation electrician disconnects the remote cab CLCB breaker due to accidental overcurrent of the safety interlocking control circuit.

And 6, step 6: the electrician operating the current cab immediately measures the voltages of DIR1 and DIR2 coils of the current cab by using a universal meter, and the voltage is 0V to confirm that the cab is in a power-off state.

And 7, step 7: and after 10 seconds, an electrician operating the current cab measures the voltages of the CLCBR, DIR1 and DIR2 coils measured by the current cab by using a universal meter, and the voltage is more than DC77V, so that the electric state is determined.

When the operation is carried out according to the steps and works according to the established requirements, the redundant power supply control function of the circuit breaker failure of the accidental failure of the vehicle door safety interlocking control circuit can be completely met after the implementation of the method.

In summary, by means of the technical scheme of the invention, through designing the fully new car door safety interlocking control circuit, when accidental short circuit or overcurrent fault occurs in the car door interlocking circuit, the circuit can realize that automatic redundant power supply is realized through the fully new control circuit after the trip of the remote circuit breaker is detected, so that the situation that the driver operates the bypass switch to limit the speed to clear passengers is avoided, the car can run to the destination garage, and the great running influence of the car on clearing passengers due to the accidental short circuit or overcurrent fault occurring in the car door interlocking circuit can be effectively avoided.

In addition, the invention effectively improves the fault redundancy of the vehicle door safety interlocking loop, also improves the operation reliability, particularly for the first-line city with more subway lines, the annual operation index is influenced by passenger clearing and rescue every time, the operation index is related to the economic index, a subway company examines a vehicle manufacturer according to the contract requirement, and has certain economic loss for a vehicle manufacturer.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (8)

1. The utility model provides a door safety interlock circuit that can automatic redundant power supply under trouble condition, includes interconnect's near-end control circuit and distal end control circuit, and this near-end control circuit is the same with distal end control circuit's structure, its characterized in that:

the near-end control circuit comprises a self-reset delay relay CLCBR, a circuit breaker CLCB, a self-reset circuit breaker CLCBRCB, a redundant circuit breaker CLCB _1, a relay DIR2, a vehicle door isolating switch LOS, a plurality of activation relays COR1 and a plurality of vehicle door controllers EDCU;

the self-reset time delay relay CLCBR is connected with auxiliary contacts of the circuit breaker CLCB and the self-reset circuit breaker CLCBRCB in series and then connected with a power supply in parallel, the relay DIR1 is connected with a plurality of activation relays COR1 and the circuit breaker CLCB in series and then connected with the power supply in parallel, and the relay DIR1 is connected with the relay DIR2 in parallel;

the redundant circuit breaker CLCB _1 is connected with an auxiliary contact of a self-resetting delay relay CLCBR in the remote control circuit in series and then connected with the circuit breaker CLCB in parallel, and the auxiliary contact of the self-resetting delay relay CLCBR is connected with the redundant circuit breaker CLCB _1 in the remote control circuit in series and then connected with the circuit breaker CLCB in the remote control circuit in parallel;

the car door controllers EDCU are connected in series and then connected with the activation relay COR1 in parallel, the car door isolating switch LOS is connected between two ends of the car door controllers EDCU in parallel, and the car door controllers EDCU are composed of a car door closing in-place travel switch DLS1 and a car door locking in-place travel switch DLS2 which are connected in series.

2. The vehicle door safety interlocking circuit capable of automatically supplying power redundantly in the event of a fault according to claim 1, characterized in that a redundant circuit breaker CLCB _1 in the near-end control circuit is connected in series with a normally open contact of a self-resetting delay relay CLCBR in the far-end control circuit and then connected in parallel with an auxiliary contact of a circuit breaker CLCB in the near-end control circuit for supplying power, and performs circuit breaker protection on the vehicle door interlocking control circuit together.

3. A vehicle door safety interlock circuit with automatic redundant power supply in the event of a fault as claimed in claim 2, wherein said door interlock control circuit automatically restores control in the event of an occasional fault.

4. A vehicle door safety interlock circuit capable of automatic redundant power supply in the event of a fault as claimed in claim 3, wherein said incidental faults include over-current faults or short-circuit faults.

5. A door safety interlock circuit for a vehicle which provides automatic redundant power supply in the event of a fault according to claim 4, wherein said door interlock control circuit automatically resumes control in the event of an occasional fault comprising the steps of:

the circuit breaker CLCB of the far-end cab is tripped off, the DC110V supplies power to the self-reset delay relay CLCBR through the self-reset circuit breaker CLCBRCB, and after 10 seconds, a normally open contact of the self-reset delay relay CLCBR is closed, so that the current cab redundancy circuit breaker CLCB _1 automatically takes over the circuit breaker protection function of the car door interlocking column control loop in a delayed mode.

6. A vehicle door safety interlock circuit with automatic redundant power supply in case of failure according to claim 1, wherein the door close-to-position travel switch DLS1 is used to output an indication of whether the door is closed or not, and the door lock-to-position travel switch DLS2 is used to output an indication of whether the door is locked or not.

7. A vehicle door safety interlock circuit with automatic redundant power supply in case of a fault according to claim 6, characterized in that the door controller EDCU constitutes one door unit with the door isolating switches LOS in parallel at both ends, and the close-in lock-in and lock-in contacts of all door units on the same side are connected in series to form a safety interlock train line.

8. A vehicle door safety interlock circuit with automatic redundant power supply in case of a fault according to claim 7, characterized in that the door isolating switch LOS is used to cut off the contact by-pass of the door close to the position travel switch DLS1 and the door lock to the position travel switch DLS2 of the unit after the door unit is released.

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