Delay lighting control circuit, rail transit vehicle and control method

Abstract

The invention relates to a time-delay lighting control circuit, a rail transit vehicle and a control method, the time-delay lighting control circuit comprises a state detection module, a time-delay control module and a load switch module, the output end of the state detection module is connected with the control end of the time-delay control module, the output end of the time-delay control module is connected with the control end of the load switch module, and the load switch module is connected with the state detection module. According to the intelligent lighting control system, through the synergistic effect of the state detection module, the delay control module and the load switch module, intelligent lighting control that the lamp is turned on when people come and the lamp is slowly turned off when people leave can be automatically and reliably achieved; therefore, the potential safety hazard of operation of personnel in a dark environment can be effectively eliminated, and the operation safety and the operation convenience are remarkably improved; meanwhile, continuous delayed illumination is provided for the departure process, so that the safety of the personnel when the personnel leave the controlled space is further guaranteed.

Description

Technical Field

[0001] This application belongs to the field of transportation technology, and in particular relates to a time-delay lighting control circuit, rail transit vehicle and control method. Background Technology

[0002] In various scenarios requiring lighting control in specific spaces, such as modern rail transit, industrial plants, warehouses, and underground parking lots, providing operators with a safe and convenient lighting environment is crucial. Among these, the driver's cab, as a typical controlled space, directly impacts the driver's operational safety and efficiency through its lighting control.

[0003] Currently, lighting control in such controlled spaces (such as the driver's cab of rail transit vehicles) is generally done manually. This method presents two issues regarding safety and efficiency: Entry phase: Operators (such as drivers) need to actively find and operate manual switches to turn on the lights in a dimly lit environment where the interior lighting is not turned on. This process poses safety risks to personnel movement and operation, and is inefficient. Leaving the operation: The operator must first manually turn off the lights, and then carry out subsequent operations and leave in the dim environment where the lights are off. This process also poses a safety hazard due to poor visibility. Summary of the Invention

[0004] The purpose of this application is to provide a time-delay lighting control circuit, a rail transit vehicle, and a control method. The time-delay lighting control circuit, rail transit vehicle, and control method provided by this application can effectively eliminate safety hazards for personnel operating in dim environments, significantly improve operational safety and ease of operation, and further ensure the safety of personnel leaving the controlled space by providing continuous time-delay lighting for the departure process. The technical solution provided in this application is as follows: A time-delay lighting control circuit includes: a status detection module, a time-delay control module, and a load switch module; The output terminal of the state detection module is connected to the control terminal of the delay control module; The output terminal of the delay control module is connected to the control terminal of the load switch module; The output terminal of the load switch module is used to connect or disconnect the power circuit of the lighting lamp. The state detection module is used to detect the accessibility status of the controlled space, and output a first signal when the accessibility status changes from prohibited to permitted, and output a second signal when the accessibility status changes from permitted to prohibited. The delay control module is used to control the load switch module to turn on instantaneously according to the first signal, and to control the load switch module to turn off with a delay according to the second signal.

[0005] Optionally, the status detection module includes at least one limit switch, which is disposed at the entrance door of the controlled space and is used to detect the open or closed state of the door.

[0006] Optionally, the delay control module includes a power failure delay relay; The coil of the power failure delay relay is connected to the output terminal of the status detection module; The normally open contact of the power failure delay relay is connected to the control terminal of the load switch module; The power-off delay relay is used to energize the coil and close the normally open contact instantaneously when the first signal is received, and to de-energize the coil and open the normally open contact after a delay when the second signal is received.

[0007] Optionally, the load switch module includes a contactor; The coil of the contactor is connected to the normally open contact of the power-off delay relay; The normally open contact of the contactor is used to connect or disconnect the power circuit of the lighting lamp.

[0008] Optionally, it also includes: a manual control switch; The manual control switch is connected in the control circuit of the load switch module and forms a parallel control relationship with the output of the delay control module; The manual control switch is used to bypass the delay control module and manually control the power circuit of the lighting lamp.

[0009] Optionally, the delay shutdown time of the delay control module is adjustable.

[0010] This application also provides a rail transit vehicle, wherein the driver's cab lighting of the rail transit vehicle is controlled by a delayed lighting control circuit as described in any of the above claims, wherein the controlled space in the delayed lighting control circuit is the driver's cab, and the lighting lamp is a driver's cab lighting fixture.

[0011] This application also provides a delayed lighting control method, applied to a delayed lighting control circuit as described in any of the above claims, the method comprising: Detect the accessibility status of the controlled space; When the system detects that the access status has changed from prohibited to permitted, the lights are turned on instantly. When the system detects that the access status has changed from allowed to prohibited, the lighting is turned off after a delay.

[0012] Optionally, in the driver's cab lighting control of rail transit vehicles, the detection of the accessibility status of the controlled space includes: Detect the open or closed status of the driver's cab door; The driver's cab door being open corresponds to a permitted entry / exit state, while the driver's cab door being closed corresponds to a prohibited entry / exit state.

[0013] Optionally, the method further includes: The delay time for the delayed shutdown can be preset or adjusted according to the usage scenario requirements.

[0014] Compared with existing technologies, this application provides a time-delay lighting control circuit, a rail transit vehicle, and a control method. The time-delay lighting control circuit includes: a state detection module, a time-delay control module, and a load switch module. The output terminal of the state detection module is connected to the control terminal of the time-delay control module, and the output terminal of the time-delay control module is connected to the control terminal of the load switch module. The output terminal of the load switch module is used to connect or disconnect the power supply circuit of the lighting lamp. The state detection module is used to detect the accessibility status of the controlled space and outputs a first signal when the accessibility status changes from prohibited to permitted. When entry or exit is prohibited, a second signal is output. A delay control module is used to control the load switch module to turn on instantaneously according to the first signal and to control the load switch module to turn off after a delay according to the second signal. In this application, through the coordinated action of the status detection module, the delay control module and the load switch module, intelligent lighting control that turns on when people enter and turns off slowly when people leave can be automatically and reliably realized. This can effectively eliminate the safety hazards of personnel operating in dim environments and significantly improve work safety and ease of operation. At the same time, by providing continuous delayed lighting for the departure process, the safety of personnel leaving the controlled space is further guaranteed. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural block diagram of a time-delay lighting control circuit disclosed in an embodiment of this application; Figure 2 This is a first circuit diagram of a time-delay lighting control circuit disclosed in an embodiment of this application; Figure 3 This is a second circuit diagram of a time-delay lighting control circuit disclosed in an embodiment of this application; Figure 4 This is a schematic diagram of a third circuit of a time-delay lighting control circuit disclosed in an embodiment of this application; Figure 5 This is a flowchart of a delayed lighting control method disclosed in an embodiment of this application; Reference numerals: 100 - Status detection module; 200 - Delay control module; 300 - Load switch module; 400 - Lighting lamp; 500 - Manual control switch; 110 - Limit switch; K1 - Power failure delay relay; K2 - Contactor. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0019] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0021] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0022] like Figure 1 As shown, a time-delay lighting control circuit includes: a state detection module 100, a time-delay control module 200, and a load switch module 300; the output terminal of the state detection module 100 is connected to the control terminal of the time-delay control module 200; the output terminal of the time-delay control module 200 is connected to the control terminal of the load switch module 300; the output terminal of the load switch module 300 is used to connect or disconnect the power circuit of the lighting lamp 400; the state detection module 100 is used to detect the accessibility status of the controlled space, and outputs a first signal when the accessibility status changes from prohibited to permitted, and outputs a second signal when the accessibility status changes from permitted to prohibited; the time-delay control module 200 is used to control the load switch module 300 to be momentarily turned on according to the first signal, and to control the load switch module 300 to be turned off after a delay according to the second signal.

[0023] In this embodiment, the controlled space can be the driver's cab of a rail transit vehicle, and the lighting 400 can be a driver's cab lighting fixture.

[0024] The status detection module 100 detects the accessibility status of the controlled space in real time (such as the opening or closing status of the driver's cab door). When the status detection module 100 detects that the accessibility status of the controlled space changes from prohibited to permitted, it outputs a first signal to the control terminal of the delay control module 200. Upon receiving the first signal, the delay control module 200 controls the load switch module 300 to turn on momentarily, thereby momentarily connecting the power circuit of the lighting lamp 400 so that the lighting lamp 400 lights up momentarily. When the status detection module 100 detects that the accessibility status of the controlled space changes from permitted to prohibited, it outputs a second signal to the control terminal of the delay control module 200. Upon receiving the second signal, the delay control module 200 controls the load switch module 300 to turn off after a delay, thereby delaying the disconnection of the power circuit of the lighting lamp 400 so that the lighting lamp 400 turns off after a delay.

[0025] This embodiment realizes fully automatic intelligent control of the driver's cab lighting. The status detection module 100 monitors the opening and closing status of the driver's cab door in real time. When the door is detected to open (driver enters), the circuit instantly turns on the lighting to eliminate the risk of the driver operating in the dark. When the door is detected to close (driver leaves), the circuit enters a delay state and automatically turns off the lighting after a preset time. It can provide a delayed lighting after the driver leaves to ensure that the door is safely closed and the vehicle is locked before turning off the lighting. This fundamentally solves the safety hazards and inconvenience of operation caused by traditional manual switch lighting in dim environments.

[0026] Compared with the prior art, this application provides a time-delay lighting control circuit, a rail transit vehicle, and a control method. The time-delay lighting control circuit includes: a state detection module 100, a time-delay control module 200, and a load switch module 300. The output terminal of the state detection module 100 is connected to the control terminal of the time-delay control module 200, and the output terminal of the time-delay control module 200 is connected to the control terminal of the load switch module 300. The output terminal of the load switch module 300 is used to connect or disconnect the power circuit of the lighting lamp 400. The state detection module 100 is used to detect the accessibility status of the controlled space and outputs a first signal when the accessibility status changes from prohibited to permitted. When the permission to enter / exit changes to a prohibition to enter / exit, a second signal is output. The delay control module 200 is used to control the load switch module 300 to turn on instantaneously according to the first signal and to control the load switch module 300 to turn off after a delay according to the second signal. In this application, through the coordinated action of the status detection module 100, the delay control module 200 and the load switch module 300, intelligent lighting control that turns on when people enter and turns off slowly when people leave can be automatically and reliably realized. This can effectively eliminate the safety hazards of personnel operating in dim environments and significantly improve work safety and ease of operation. At the same time, by providing continuous delayed lighting for the departure process, the safety of personnel leaving the controlled space is further guaranteed.

[0027] like Figure 2 As shown, in one embodiment of this application, the status detection module 100 includes at least one limit switch 110, which is installed at the entrance door of the controlled space and is used to detect the opening or closing status of the door.

[0028] In this embodiment, the limit switch 110 can be specifically installed on the door frame of the driver's cab door or at the corresponding position where the door body contacts the vehicle body. When the driver's cab door is opened, the contacts of the limit switch 110 close, thereby generating a "door open" status signal (first signal). When the driver's cab door is closed, the contacts of the limit switch 110 open, thereby generating a "door closed" status signal (second signal).

[0029] Preferably, limit switches 110-1 and 110-2 can be installed at the two side doors (such as door 1 and door 2) of the driver's cab, and their output signals can be connected in parallel to the control circuit. In this way, no matter which side door the driver enters from, as long as any door is opened, the status detection module 100 can immediately output the first signal to trigger the lighting to turn on automatically, which improves the reliability of the system response and the ease of use.

[0030] The 110 limit switch is simple in structure, durable and low in cost, making it very suitable for rail transit vehicles in working environments with frequent door opening and closing and high vibration.

[0031] like Figures 1 to 3 As shown, in one embodiment of this application, the delay control module 200 includes a power-off delay relay K1; the coil of the power-off delay relay K1 is connected to the output terminal of the state detection module 100; the normally open contact of the power-off delay relay K1 is connected to the control terminal of the load switch module 300; the power-off delay relay K1 is used to energize the coil when a first signal is received, and the normally open contact closes instantaneously; and to de-energize the coil when a second signal is received, and the normally open contact opens after a delay.

[0032] In this embodiment, the power-off delay relay K1 is a relay with a delayed release characteristic. When the limit switch 110 outputs the first signal (indicating that entry and exit are permitted), the coil of the power-off delay relay K1 is instantaneously energized, and the normally open contact of the power-off delay relay K1 immediately closes, triggering the lighting to illuminate. When the limit switch 110 outputs the second signal (indicating that entry and exit are prohibited), although the coil of the power-off delay relay K1 is de-energized, the internal delay mechanism of the power-off delay relay K1 starts to work, so that the normally open contact of the power-off delay relay K1 remains closed for a period of time (e.g., 30 seconds) before opening, thereby realizing the delayed lighting shutdown function. This delay time can be set or adjusted according to actual operational needs (such as the time required for the driver to complete getting off the vehicle and locking the door) through the knob on the relay, the DIP switch, or by selecting different models.

[0033] The power failure delay relay K1 is adopted. The circuit structure is simple and reliable. It can achieve the delay without continuous power supply, which not only meets the needs of safe lighting, but also helps to reduce system energy consumption and complexity.

[0034] like Figure 1 , Figure 3 and Figure 4 As shown, in one embodiment of this application, the load switch module 300 includes a contactor K2; the coil of the contactor K2 is connected to the normally open contact of the power failure delay relay K1; the normally open contact of the contactor K2 is used to connect or disconnect the power supply circuit of the lighting lamp 400.

[0035] In this embodiment, contactor K2 serves as the actuator for a high-current load. The coil of contactor K2 is controlled by the normally open contact of the power-off delay relay K1. When the normally open contact of the power-off delay relay K1 closes, the coil of contactor K2 is energized and drives the normally open contact in its main circuit to close, thereby connecting the power supply circuit of the driver's cab lighting 400 and illuminating the lighting 400. When the contact of the power-off delay relay K1 (after a delay) opens, the coil of contactor K2 is de-energized, the normally open contact of contactor K2 opens, cutting off the lighting power supply and extinguishing the lamp.

[0036] Contactor K2 features strong switching capacity, good electrical isolation, and long lifespan, enabling reliable control of 400 lighting fixtures. It effectively isolates the control circuit (low voltage, low current) from the main lighting circuit (high voltage, high current), improving the safety and reliability of the entire control system. Furthermore, using contactor K2 to switch power on and off facilitates system expansion and maintenance.

[0037] like Figure 3 As shown, in one embodiment, this application also includes: a manual control switch 500; the manual control switch 500 is connected in the control circuit of the load switch module 300 and forms a parallel control relationship with the output terminal of the delay control module 200; the manual control switch 500 is used to bypass the delay control module 200 and manually control the on / off of the power circuit of the lighting lamp 400.

[0038] In this embodiment, the manual control switch 500 and the normally open contact of the power-off delay relay K1 are connected in parallel to jointly control the on / off state of the contactor K2 coil. This design achieves redundancy and complementarity between automatic and manual control. In automatic mode, the limit switch 110 and the power-off delay relay K1 achieve "lights turn on when someone approaches, lights turn off slowly when someone leaves." When the automatic control function needs maintenance or testing, or when the driver needs to immediately turn the lighting on or off in a specific scenario, the contactor K2 coil circuit can be directly connected or disconnected by operating the manual control switch 500, thereby instantaneously controlling the lighting of the 400 lights without being affected by the state of the power-off delay relay K1. This parallel control relationship ensures that the system retains the directness and reliability of traditional manual control while possessing the advantages of intelligence and automation, thus improving the overall practicality, flexibility, and fault response capability of the system.

[0039] As one implementation method, in this embodiment of the application, the delay shutdown time of the delay control module is adjustable.

[0040] In this embodiment, the delay time of the power-off delay relay can be set via its built-in adjustment device (such as a knob, DIP switch, or potentiometer), or by selecting relay models with different rated delay times. This adjustable feature allows the system to flexibly adapt to different application scenarios and work habits. For example, the delay time can be set between 30 and 90 seconds based on the time required for the driver to complete standardized work procedures such as getting out of the vehicle, inspecting the vehicle, and locking the doors; it can also be temporarily adjusted according to seasonal changes (such as wearing heavy clothing in winter and potentially moving more slowly) or special work requirements (such as needing to briefly record outside the vehicle after parking). This adjustable design enhances the system's versatility and user-friendliness, ensuring that the delayed lighting fully protects personnel safety while avoiding unnecessary energy waste.

[0041] This application embodiment also provides a rail transit vehicle, wherein the driver's cab lighting of the rail transit vehicle is controlled by a delayed lighting control circuit as described above, wherein the controlled space in the delayed lighting control circuit is the driver's cab, and the lighting lamp is a driver's cab lighting fixture.

[0042] like Figure 5 As shown in the embodiments of this application, a delayed lighting control method is also provided, applied to a delayed lighting control circuit as described in any of the above claims, the method comprising: S1. Detect the accessibility status of the controlled space; S2. When the entry / exit status is detected to change from prohibited to permitted, the lights are turned on instantly. S3. When the entry / exit status is detected to change from allowed to prohibited, the lights are turned off after a delay.

[0043] As one implementation method, in this embodiment of the application, the driver's cab lighting control of a rail transit vehicle detects the accessibility status of the controlled space, including: Detect the open or closed status of the driver's cab door; When the driver's cab door is open, it indicates that entry and exit are permitted; when the driver's cab door is closed, it indicates that entry and exit are prohibited.

[0044] As one implementation method, in this embodiment of the application, the method further includes: Based on the usage scenario requirements, the delay time for the delayed shutdown can be preset or adjusted.

[0045] It should be understood that the use of terms such as "system," "device," "unit," and / or "module" in this application is merely one method of distinguishing different components, elements, parts, sections, or assemblies at different levels. However, if other terms can achieve the same purpose, they may be replaced by other expressions.

[0046] The embodiments in this specification are described in a progressive manner, with each embodiment focusing on the related aspects. For any differences between the embodiments, or for the same or similar parts between the embodiments, please refer to each other.

[0047] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A time-delay lighting control circuit, characterized in that, include: Status detection module, delay control module, and load switch module; The output terminal of the state detection module is connected to the control terminal of the delay control module; The output terminal of the delay control module is connected to the control terminal of the load switch module; The output terminal of the load switch module is used to connect or disconnect the power circuit of the lighting lamp. The state detection module is used to detect the accessibility status of the controlled space, and output a first signal when the accessibility status changes from prohibited to permitted, and output a second signal when the accessibility status changes from permitted to prohibited. The delay control module is used to control the load switch module to turn on instantaneously according to the first signal, and to control the load switch module to turn off with a delay according to the second signal.

2. The time-delay lighting control circuit according to claim 1, characterized in that, The status detection module includes at least one limit switch, which is installed at the entrance door of the controlled space to detect the open or closed status of the door.

3. The time-delay lighting control circuit according to claim 1 or 2, characterized in that, The delay control module includes a power failure delay relay; The coil of the power failure delay relay is connected to the output terminal of the status detection module; The normally open contact of the power failure delay relay is connected to the control terminal of the load switch module; The power-off delay relay is used to energize the coil and close the normally open contact instantaneously when the first signal is received, and to de-energize the coil and open the normally open contact after a delay when the second signal is received.

4. The time-delay lighting control circuit according to claim 3, characterized in that, The load switch module includes a contactor; The coil of the contactor is connected to the normally open contact of the power-off delay relay; The normally open contact of the contactor is used to connect or disconnect the power circuit of the lighting lamp.

5. The time-delay lighting control circuit according to claim 1, characterized in that, Also includes: Manual control switch; The manual control switch is connected in the control circuit of the load switch module and forms a parallel control relationship with the output of the delay control module; The manual control switch is used to bypass the delay control module and manually control the power circuit of the lighting lamp.

6. The time-delay lighting control circuit according to claim 1, characterized in that, The delay shutdown time of the delay control module is adjustable.

7. A rail transit vehicle, characterized in that, The driver's cab lighting of the rail transit vehicle is controlled by a delayed lighting control circuit as described in any one of claims 1 to 6, wherein the controlled space in the delayed lighting control circuit is the driver's cab, and the lighting lamp is a driver's cab lighting fixture.

8. A delayed lighting control method, applied to the delayed lighting control circuit as described in any one of claims 1 to 6, characterized in that, The method includes: Detect the accessibility status of the controlled space; When the system detects that the access status has changed from prohibited to permitted, the lights are turned on instantly. When the system detects that the access status has changed from allowed to prohibited, the lighting is turned off after a delay.

9. The control method according to claim 8, characterized in that, Lighting control for the driver's cab of rail transit vehicles, wherein detecting the accessibility status of the controlled space includes: Detect the open or closed status of the driver's cab door; The driver's cab door being open corresponds to a permitted entry / exit state, while the driver's cab door being closed corresponds to a prohibited entry / exit state.

10. The control method according to claim 8 or 9, characterized in that, The method further includes: The delay time for the delayed shutdown can be preset or adjusted according to the usage scenario requirements.

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