A control circuit for delayed turn-off of passenger compartment lighting in a rail transit vehicle

Abstract

The present invention relates to a control circuit for the delayed turn-off of the passenger compartment lighting of a rail transit vehicle. By setting two mutually redundant lighting on-train lines, when the train line is at a high level, a lighting on command is issued, and when it is at a low level, a lighting off command is issued. As long as one of the train lines is at a high level, the lighting is turned on. When both train lines are at a low level, the lighting is turned off, ensuring the accuracy of lighting control. At the same time, a delayed power supply bus is set between the permanent power supply bus and the power load of the lighting system. After the train goes into sleep mode, the delayed power supply bus will continue to supply power for a period of time and then the contacts of the lighting delayed power-off contactor will disconnect, cutting off the connection between the lighting load and the permanent power supply bus, avoiding the continuous consumption of the battery capacity by the lighting load, preventing the battery from discharging, effectively extending the service life of the battery, and enabling the lighting to be turned on and off in both the train activation and sleep modes.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit vehicle control, specifically to the technical field of passenger compartment lighting control for rail transit vehicles, and particularly to a control circuit for delayed turn-off of passenger compartment lighting in rail transit vehicles. Background Art

[0002] Passenger compartment lighting is one of the portals of rail vehicles facing passengers and is also a basic function required by vehicle maintenance personnel. Humanized intelligent lighting is the general trend. After people leave the vehicle, the lighting remains on for a period of time and then automatically turns off, which is one of the functional requirements. At the same time, when the vehicle is in the sleep state, the passenger compartment lights can be turned on through a switch to meet the lighting needs of vehicle maintenance personnel.

[0003] In the prior art, the passenger compartment lighting drive power supply and controller are hung under the permanent power supply bus. Although the above functions can be achieved, due to the standby power consumption of the drive power supply and controller, the battery capacity is consumed, the burden on the battery is increased, and the battery is prone to discharge over a long time, resulting in the vehicle being unable to be normally activated.

[0004] Therefore, designing a delayed lighting control circuit that can turn on the passenger compartment lights when the train is in the sleep state and has no power consumption in the sleep state of the train is a technical problem that needs to be solved urgently at present. Summary of the Invention

[0005] The purpose of the present invention is to provide a control circuit for delayed turn-off of passenger compartment lighting in rail transit vehicles, which can simultaneously meet the normal lighting and delayed lighting of the passenger compartment of the vehicle, and can also achieve the lighting of the passenger compartment lighting in the sleep state, and has no power consumption after turning off the lights in the sleep state of the train, effectively extending the working life of the battery.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] The present invention provides a control circuit for delayed turn-off of passenger compartment lighting in rail transit vehicles, including a permanent power supply bus, a lighting switch connected to the permanent power supply bus, and a lighting delay control circuit breaker. The output end of the lighting switch is divided into three outputs. Among them, the first output is connected to the first lighting on train line, the second output is connected to the second lighting on train line, and the third output is connected to the lighting off train line. The first lighting on train line and the second lighting on train line are redundant configuration lines. A lighting off relay is arranged in the lighting off train line. The third output of the lighting switch is connected to the lighting off relay and supplies power to it. The first output and the second output are simultaneously conducted and output when the lighting switch is turned to the "on" position, and the third output is conducted and output when the lighting switch is turned to the "off" position;

[0008] The output terminal of the lighting delay control circuit breaker is connected to the coil control point of the lighting delay power-off relay after passing through the normally open contact of the train activation relay. At the same time, the output terminal of the lighting delay control circuit breaker is connected to the coil of the lighting delay power-off relay to supply power to it. One end of the normally open contact of the lighting delay power-off relay is connected to the output terminal of the lighting delay control circuit breaker, and the other end is connected to the lighting delay power-off contactor to supply power to the lighting delay power-off contactor. One end of the normally open contact of the lighting delay power-off contactor is connected to the permanent power supply bus, and the other end is connected to the delayed power supply bus. The delayed power supply bus supplies power to the lighting relays in the first lighting on-train line and the second lighting train line through the two connected lighting circuit breakers respectively.

[0009] For the above technical solution, the applicant has further optimization measures.

[0010] Optionally, in the first lighting on-train line, one side contact of the first normally closed contact of the lighting off relay is connected to the first contact of the lighting switch and then connected to the permanent power supply bus. The other side contact of the first normally closed contact of the lighting off relay is connected to the first lighting relay to supply power to it, and the one side contact of the first normally closed contact is connected to the auxiliary normally open contact of the first lighting relay.

[0011] Further, the other end of the normally open contact of the lighting delay power-off contactor is connected to the first lighting circuit breaker, and the first lighting circuit breaker is connected to the auxiliary normally open contact of the first lighting relay, which is used to supply delayed power to the self-locking circuit of the first lighting relay.

[0012] Optionally, in the second lighting on-train line, one side contact of the second normally closed contact of the lighting off relay is connected to the second contact of the lighting switch and then connected to the permanent power supply bus. The other side contact of the second normally closed contact of the lighting off relay is connected to the second lighting relay to supply power to it, and the one side contact of the second normally closed contact is connected to the auxiliary normally open contact of the second lighting relay.

[0013] Further, the other end of the normally open contact of the lighting delay power-off contactor is connected to the second lighting circuit breaker, and the second lighting circuit breaker is connected to the auxiliary normally open contact of the second lighting relay, which is used to supply delayed power to the self-locking circuit of the second lighting relay.

[0014] Optionally, it further includes a deactivated lighting relay. The coil of the deactivated lighting relay is connected to the first output or the second output of the lighting switch after being connected through the normally closed contact of the lighting delay-off relay. The first normally open contact of the deactivated lighting relay is connected in parallel with the auxiliary normally open contact of the first lighting relay or the second lighting relay. The second normally open contact of the deactivated lighting relay is connected in series with the third normally closed contact of the lighting cut-off relay and then connected in parallel with the normally open contact of the lighting delay-off relay.

[0015] Optionally, it further includes a driverless mode relay. The input end of the lighting switch is connected to the permanent power supply bus after being connected through the normally closed contact of the driverless mode relay.

[0016] Further, the lighting switch further includes a third contact and a fourth contact. One side of the third contact and the fourth contact connected in series is connected to the normally closed contact of the driverless mode relay, and the other side is connected to the coil of the lighting cut-off relay to supply power to it.

[0017] Optionally, two sets of normally open contacts of the lighting delay-off contactor are connected in series and arranged between the permanent power supply bus and the delay power supply bus.

[0018] Due to the application of the above technical solutions, the present invention has the following advantages compared with the prior art:

[0019] The passenger compartment lighting delay-off control circuit of the rail transit vehicle in this application sets two mutually redundant lighting on train lines. When the train line is at a high level, a lighting on command is issued, and when it is at a low level, a lighting off command is issued. As long as one train line is at a high level, the lighting is turned on. When both train lines are at a low level, the lighting is turned off, ensuring the accuracy of lighting control. At the same time, a delay power supply bus is set between the permanent power supply bus and the lighting system power load. After the train goes to sleep, the delay power supply bus will continue to supply power for a period of time and then the contacts of the lighting delay-off contactor will disconnect, cutting off the connection between the lighting load and the permanent power supply bus, avoiding the continuous consumption of the battery capacity by the lighting load, preventing the battery from running out of power, and effectively extending the service life of the battery.

[0020] In addition, the circuit control of this application uses the same lighting switch connected to the permanent power supply bus, and a separate lighting off train line is set. A lighting cut-off relay is connected to the lighting off train line, and the normally closed contacts of the lighting cut-off relay are respectively connected in series to the two lighting on train lines to disconnect the self-locking of the lighting on train lines, thereby turning off the lighting, and thus the lighting can be turned on and off in both the activated and sleeping states of the train.

[0021] In addition, the "on" position of the lighting switch is connected to an inactive lighting relay for turning on the lighting when the vehicle is in sleep mode. When the train is in sleep mode and someone gets on the train for inspection or other operations, the passenger compartment lighting can be directly turned on without activating the train, improving the flexibility and convenience of lighting control. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the accompanying drawings in an illustrative rather than restrictive manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0023] In the drawings:

[0024] Figure 1 is the circuit schematic diagram of the lighting switch control in the passenger compartment lighting delay-off control circuit of a rail transit vehicle according to an embodiment of the present invention;

[0025] Figure 2 is the circuit schematic diagram of the lighting delay control in the passenger compartment lighting delay-off control circuit of a rail transit vehicle according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The technical solutions of the present invention will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0028] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] This embodiment describes a passenger compartment lighting delay-off control circuit for a rail transit vehicle, as Figure 1As shown, it includes a permanent power supply bus, a lighting switch PLCS connected to the permanent power supply bus, and a lighting delay control circuit breaker LGTLCB. The output terminal of the lighting switch PLCS is divided into three outputs. Among them, the first output is connected to the first lighting on train line, the second output is connected to the second lighting on train line, and the third output is connected to the lighting off train line. The first lighting on train line and the second lighting on train line are redundant configuration lines. A lighting cut-off relay PLCR is arranged in the lighting off train line. The third output of the lighting switch PLCS is connected to and supplies power to the lighting cut-off relay PLCR. The first output and the second output are simultaneously conducted and output when the lighting switch PLCS is turned to the "on" position, and the third output is conducted and output when the lighting switch PLCS is turned to the "off" position.

[0030] Specifically, in the first lighting on train line, one contact A1 of the first normally closed contact of the lighting cut-off relay PLCR is connected to the first contact of the lighting switch PLCS and then connected to the permanent power supply bus. The other contact B1 of the first normally closed contact of the lighting cut-off relay PLCR is connected to the first lighting relay PLOR1 to supply power to it. One contact A1 of the first normally closed contact is connected to the auxiliary normally open contact of the first lighting relay PLOR1. In the second lighting on train line, one contact A2 of the second normally closed contact of the lighting cut-off relay PLCR is connected to the second contact of the lighting switch PLCS and then connected to the permanent power supply bus. The other contact B2 of the second normally closed contact of the lighting cut-off relay PLCR is connected to the second lighting relay PLOR2 to supply power to it. One contact A2 of the second normally closed contact is connected to the auxiliary normally open contact of the second lighting relay PLOR2.

[0031] The lighting control circuit of this embodiment further includes an unmanned driving mode relay FAMR. The input terminal of the lighting switch PLCS is connected to the permanent power supply bus after passing through the normally closed contact of the unmanned driving mode relay FAMR. The lighting switch also includes a third contact and a fourth contact. One side of the third contact and the fourth contact connected in series is connected to the normally closed contact of the unmanned driving mode relay FAMR, and the other side is connected to the coil of the lighting cut-off relay PLCR to supply power to it.

[0032] The control circuit of this embodiment sets two mutually redundant first lighting on train lines and second lighting on train lines. When one of the lighting on train lines is at a high level, a lighting on command is issued, and when it is at a low level, a lighting off command is issued. In this way, as long as one of the train lines is at a high level, the lighting is turned on, and when both train lines are at a low level, the lighting is turned off, ensuring the accuracy of lighting control. In addition, the circuit control of this embodiment uses the same lighting switch connected to the permanent power supply bus, and a separate lighting off train line is set. A lighting off relay is connected to the lighting off train line, and normally closed contacts of the lighting off relay are respectively connected in series to the two lighting on train lines to disconnect the self-locking of the lighting on train lines, thereby turning off the lighting, and thus the lighting can be turned on and off in both the train activation and sleep states. When entering the sleep state, the control circuit of this embodiment can cut off the connection between the lighting load and the permanent power supply bus, avoid the lighting load continuously consuming the battery capacity, prevent the battery from discharging, and effectively extend the service life of the battery.

[0033] As Figure 2 shown, the output end of the lighting delay control circuit breaker LGTLCB is connected to the coil control point of the lighting delay power-off relay LGTLR after passing through the normally open contact of the train activation relay TAR. At the same time, the output end of the lighting delay control circuit breaker LGTLCB is connected to the coil of the lighting delay power-off relay LGTLR to supply power to it. One end of the normally open contact of the lighting delay power-off relay LGTLR is connected to the output end of the lighting delay control circuit breaker LGTLCB, and the other end is connected to the lighting delay power-off contactor LGTLK to supply power to the lighting delay power-off contactor LGTLK. One end of the normally open contact of the lighting delay power-off contactor LGTLK is connected to the permanent power supply bus, and the other end is connected to the delayed power supply bus. Two groups of normally open contacts of the lighting delay power-off contactor LGTLK are connected in series and arranged between the permanent power supply bus and the delayed power supply bus. The delayed power supply bus supplies power to the lighting relays in the first lighting on train line and the second lighting train line respectively through the two connected lighting circuit breakers.

[0034] The other end of the normally open contact of the lighting delay power-off contactor LGTLK is connected to the first lighting circuit breaker NLCB1, and the first lighting circuit breaker NLCB1 is connected to the auxiliary normally open contact of the first lighting relay PLOR1 to supply delayed power to the self-locking circuit of the first lighting relay PLOR1. The other end of the normally open contact of the lighting delay power-off contactor LGTLK is connected to the second lighting circuit breaker NLCB2, and the second lighting circuit breaker NLCB2 is connected to the auxiliary normally open contact of the second lighting relay PLOR2 to supply delayed power to the self-locking circuit of the second lighting relay PLOR2.

[0035] A delay power supply bus is set between the permanent power supply bus and the power load of the lighting system. After the train goes into sleep mode, the delay power supply bus will continue to supply power for a period of time until the contacts of the lighting delay power-off contactor are disconnected. Based on the above lighting delay control circuit, the lighting system has a delay function. After the vehicle is parked and goes into sleep mode, it can continue to be lit for a period of time, usually set to 300s, to maintain the passenger compartment lighting during the restart of the train under special circumstances (for example, when the system fails). After that, the lamps will automatically go out, which reflects the intelligence and facilitates the driver and maintenance personnel to leave.

[0036] In a further embodiment, this embodiment further includes a non-activated lighting relay NLCR. The coil of the non-activated lighting relay NLCR is connected to the first output or the second output of the lighting switch PLCS through the normally closed contacts of the lighting delay power-off relay LGTLR. The first normally open contact of the non-activated lighting relay NLCR is connected in parallel with the auxiliary normally open contact of the first lighting relay or the second lighting relay. The second normally open contact of the non-activated lighting relay NLCR is connected in series with the third normally closed contact of the lighting off relay PLCR and then connected in parallel with the normally open contact of the lighting delay power-off relay LGTLR. The "on" position of the lighting switch is connected to the non-activated lighting relay at the back, which is used to turn on the lighting when the vehicle is in sleep mode. When the train is in sleep mode, if someone gets on the train for inspection or other operations, the passenger compartment lighting can be directly turned on without activating the train, which improves the flexibility and convenience of lighting control.

[0037] In addition, the self-locking of the above control circuit utilizes the power supply of the power supply circuit, and a diode is set between the control circuit and the power supply circuit for one-way isolation.

[0038] Based on the above passenger compartment lighting delay power-off control circuit of rail transit vehicles, the passenger compartment lighting system can achieve "passenger compartment lighting switch control in the vehicle activation state", "passenger compartment lighting power-off delay control", and "lighting switch control when the vehicle is in sleep mode", which will be elaborated one by one below.

[0039] 1. Power supply source of passenger compartment lighting system equipment and control lines

[0040] As Figure 1 shown, the input end of the lighting switch PLCS is connected to the permanent power supply bus through the normally closed contacts of the driverless mode relay FAMR. Whether the vehicle is in sleep mode or manual activation mode, the lighting lamps can be controlled through the lighting switch PLCS;

[0041] As Figure 2As shown in the figure, the input end of the lighting delay control circuit breaker LGTLCB is also connected to the permanent power supply bus. The output end is connected to the coil of the lighting delay power-off relay LGTLR after passing through the normally open contact C4-B4 of the train activation relay TAR. After the train is activated, the normally open contact C4-B4 of the train activation relay TAR closes, and the coil of the lighting delay power-off relay LGTLR is energized. The normally open contact 11-3 of the lighting delay power-off relay LGTLR closes, and then the coil of the lighting delay power-off contactor LGTLK is energized. The two pairs of normally open contacts 1-2 and 3-4 of the lighting delay power-off contactor LGTLK connected in series between the permanent power supply bus and the delayed power supply bus close, and the delayed power supply bus is energized. Then, power is supplied to the lighting equipment and Figure 1 the self-locking circuits of the first lighting relay PLOR1 and the second lighting relay PLOR2 in

[0042] 2. Control of the passenger compartment lighting switch in the vehicle activation state

[0043] As Figure 1 shown in the figure, the lighting switch control is carried out through three train lines: the first lighting on train line ON1, the second lighting on train line ON2, and the lighting off train line OFF. That is, when one or both of the first lighting on train line ON1 and the second lighting on train line ON2 are at a high level, a signal is sent to the lamp controller, and the lamps are lit. When both the first lighting on train line ON1 and the second lighting on train line ON2 are at a low level, the lamps are extinguished. Among them, the first lighting on train line ON1 and the second lighting on train line ON2 are for redundant configuration.

[0044] After the vehicle is activated, when the lighting switch PLCS is turned to the "on" position, the first contact 13-14 and the second contact 33-34 of the lighting switch PLCS close. The first lighting on train line ON1 and the second lighting on train line ON2 are energized, and a high-level signal is output to the lamp controller, and the lamps are lit. At the same time, the coils of the first lighting relay PLOR1 and the second lighting relay PLOR2 connected under the first lighting on train line ON1 and the second lighting on train line ON2 are energized, and the auxiliary normally open contacts 13-14 of the two lighting relays close to form self-locking. The first lighting on train line ON1 and the second lighting on train line ON2 remain energized, and the lighting remains lit;

[0045] When the lighting switch PLCS is turned to the "OFF" position, the third contact 23 - 24 and the fourth contact 43 - 44 of the lighting switch PLCS are closed. As a result, the lighting off train line OFF is energized, and the coil of the lighting cut-off relay PLCR is energized. The two pairs of normally closed contacts A1 - B1 and A2 - B2 of the lighting cut-off relay PLCR connected in series on the first lighting on train line ON1 and the second lighting on train line ON2 are disconnected, causing the coils of the first lighting relay PLOR1 and the second lighting relay PLOR2 to lose power and the self-locking to be disconnected. The first lighting on train line ON1 and the second lighting on train line ON2 lose power, thereby turning off the passenger compartment lighting.

[0046] 3. Passenger Compartment Lighting Power-Off Delay Control

[0047] As Figure 2 shown, during the process of the vehicle transitioning from active to dormant, the normally open contact C4 - B4 of the train activation relay TAR is disconnected, and the coil control point 5 of the lighting delay power-off relay LGTLR loses power. The lighting delay power-off relay LGTLR starts timing. After 300s, the normally open contact 11 - 3 of the lighting delay power-off relay LGTLR is disconnected, and then the coil of the lighting delay power-off contactor LGTLK loses power. The two pairs of normally open contacts 1 - 2 and 3 - 4 of the lighting delay power-off contactor LGTLK connected in series between the permanent power supply bus and the delayed power supply bus are disconnected, and the delayed power supply bus loses power. The lighting system loses power supply, thereby turning off the passenger compartment lighting with a delay.

[0048] 4. Lighting Switch Control When the Vehicle is in the Dormant State

[0049] As Figure 1 , the coil of the non-activated lighting relay NLCR is connected to the second contact of the lighting switch PLCS through the normally closed contact 14 - 4 of the lighting delay power-off relay LGTLR. The normally open contact 13 - 14 of the non-activated lighting relay NLCR is in parallel with the 13 - 14 contact of the second lighting relay PLOR2. As Figure 2 shown, the normally open contact 43 - 44 of the non-activated lighting relay NLCR and the normally closed contact A3 - B3 of the lighting cut-off relay PLCR are connected in series to the coil input terminal of the lighting delay power-off contactor LGTLK.

[0050] When the vehicle is in the sleep state, when the lighting switch PLCS is turned to the "ON" position, the first contact 13-14 and the second contact 33-34 of the lighting switch PLCS are closed, the coil of the non-activated lighting relay NLCR is energized, the normally open contact 13-14 of the non-activated lighting relay NLCR is closed, the non-activated lighting relay NLCR forms self-locking, and at the same time, the normally open contact 43-44 of the non-activated lighting relay NLCR is closed, the coil of the lighting delay-off contactor LGTLK is energized. The two pairs of normally open contacts 1-2 and 3-4 of the lighting delay-off contactor LGTLK connected in series between the permanent power supply bus and the delayed power supply bus are closed, and the delayed power supply bus is energized. Then, through the first lighting circuit breaker NLCB1 and the second lighting circuit breaker NLCB2, power is supplied to the lighting equipment and Figure 1 the first lighting relay PLOR1 and the second lighting relay PLOR2 in

[0051] and the self-locking circuit of the non-activated lighting relay NLCR. The first lighting on train line ON1 and the second lighting on train line ON2 remain energized, and the lighting remains lit; Figure 2 When the vehicle is in the sleep state and the lighting switch PLCS is turned from the "ON" position to the "OFF" position, the coil of the lighting off relay PLCR is energized. As

[0052] , the normally closed contact A3-B3 of the lighting off relay PLCR connected in series at the input end of the coil of the delay-off contactor LGTLK is opened, the coil of the delay-off contactor LGTLK loses power, the two pairs of normally open contacts 1-2 and 3-4 of the lighting delay-off contactor LGTLK connected in series between the permanent power supply bus and the delayed power supply bus are opened, the delayed power supply bus loses power, the coils of the first lighting relay PLOR1 and the second lighting relay PLOR2 lose power and the self-locking is disconnected, the first lighting on train line ON1 and the second lighting on train line ON2 lose power, and the lighting is turned off.

[0052] The above embodiments are only used to illustrate the technical concept and features of the present invention. The purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A control circuit for the delayed turn-off of the passenger compartment lighting of a rail transit vehicle, characterized in that, It includes a permanent power supply busbar, a lighting switch (PLCS) connected to the permanent power supply busbar, and a lighting delay control circuit breaker (LGTLCB). The output end of the lighting switch (PLCS) is divided into three-way outputs. Among them, the first-way output is connected to the first lighting on train line, the second-way output is connected to the second lighting on train line, and the third-way output is connected to the lighting off train line. The first lighting on train line and the second lighting on train line are redundant configuration lines. A lighting off relay (PLCR) is provided in the lighting off train line. The third-way output of the lighting switch (PLCS) is connected to the lighting off relay (PLCR) and powers it. The first-way output and the second-way output are both conducted and output when the lighting switch (PLCS) is turned to the "on" position, and the third-way output is conducted and output when the lighting switch (PLCS) is turned to the "off" position. The output end of the lighting delay control circuit breaker (LGTLCB) is connected to the coil control point of the lighting delay power-off relay (LGTLR) through the normally open contact of the train activation relay (TAR). At the same time, the output end of the lighting delay control circuit breaker (LGTLCB) is connected to the coil of the lighting delay power-off relay (LGTLR) to power it. One end of the normally open contact of the lighting delay power-off relay (LGTLR) is connected to the output end of the lighting delay control circuit breaker (LGTLCB), and the other end is connected to the lighting delay power-off contactor (LGTLK) to power the lighting delay power-off contactor (LGTLK). One end of the normally open contact of the lighting delay power-off contactor (LGTLK) is connected to the permanent power supply busbar, and the other end is connected to the delayed power supply busbar. The delayed power supply busbar supplies power to the lighting relays in the first lighting on train line and the second lighting on train line through the two connected lighting circuit breakers respectively. In the first lighting on train line, one side contact (A1) of the first normally closed contact of the lighting off relay (PLCR) is connected to the first contact of the lighting switch (PLCS) and then connected to the permanent power supply busbar. The other side contact (B1) of the first normally closed contact of the lighting off relay (PLCR) is connected to the first lighting relay (PLOR1) to power it. The one side contact (A1) of the first normally closed contact is connected to the auxiliary normally open contact of the first lighting relay (PLOR1). In the second lighting on train line, one side contact (A2) of the second normally closed contact of the lighting off relay (PLCR) is connected to the second contact of the lighting switch (PLCS) and then connected to the permanent power supply busbar. The other side contact (B2) of the second normally closed contact of the lighting off relay (PLCR) is connected to the second lighting relay (PLOR2) to power it. The one side contact (A2) of the second normally closed contact is connected to the auxiliary normally open contact of the second lighting relay (PLOR2).

2. The passenger compartment lighting delay-off control circuit for a rail transit vehicle according to claim 1, characterized in that, The other end of the normally open contact of the lighting delay-off contactor (LGTLK) is connected to the first lighting circuit breaker (NLCB1), and the first lighting circuit breaker (NLCB1) is connected to the auxiliary normally open contact of the first lighting relay (PLOR1) for providing delayed power supply to the self-locking circuit of the first lighting relay (PLOR1).

3. The passenger compartment lighting delay-off control circuit for a rail transit vehicle according to claim 1, wherein The other end of the normally open contact of the lighting delay-off contactor (LGTLK) is connected to the second lighting circuit breaker (NLCB2), and the second lighting circuit breaker (NLCB2) is connected to the auxiliary normally open contact of the second lighting relay (PLOR2) for providing delayed power supply to the self-locking circuit of the second lighting relay (PLOR2).

4. The passenger compartment lighting delay-off control circuit for a rail transit vehicle according to claim 1, wherein, It further includes a non-activated lighting relay (NLCR). The coil of the non-activated lighting relay (NLCR) is connected through the normally closed contact of the lighting delay-off relay (LGTLR) and then connected to the first output or the second output of the lighting switch (PLCS). The first normally open contact of the non-activated lighting relay (NLCR) is in parallel with the auxiliary normally open contact of the first lighting relay or the second lighting relay. The second normally open contact of the non-activated lighting relay (NLCR) is in series with the third normally closed contact of the lighting cut-off relay (PLCR) and then in parallel with the normally open contact of the lighting delay-off relay (LGTLR).

5. The passenger compartment lighting delay-off control circuit of the rail transit vehicle according to claim 1, wherein It further includes a driverless mode relay (FAMR). The input end of the lighting switch (PLCS) is connected to the permanent power supply bus after being connected through the normally closed contact of the driverless mode relay (FAMR).

6. The passenger compartment lighting delay-off control circuit for a rail transit vehicle according to claim 5, characterized in that, The lighting switch further includes a third contact and a fourth contact. One side of the third contact and the fourth contact connected in series is connected to the normally closed contact of the driverless mode relay (FAMR), and the other side is connected to the coil of the lighting cut-off relay (PLCR) to supply power to it.

7. The passenger compartment lighting delay-off control circuit for rail transit vehicles according to claim 1, wherein Two groups of normally open contacts of the lighting delay-off contactor (LGTLK) are connected in series and arranged between the permanent power supply bus and the delayed power supply bus.

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