A vehicle lamp control system, a vehicle lamp control method, and a multiplex controller

Abstract

The application discloses a kind of vehicle light control systems, including the first turn signal lamp being arranged on tractor and the second turn signal lamp being arranged on trailer;Turn signal switch, is arranged on tractor;Connector, is arranged on tractor and is connected with second turn signal lamp and constitutes electric connection;Multiplex controller, with first turn signal lamp and turn signal switch constitute electric connection, for according to the vehicle light control signal of turn signal switch control first turn signal lamp;Multiplex controller is also connected with connector and constitutes electric connection, and connector provides connection signal to multiplex controller;Multiplex controller controls second turn signal lamp according to the vehicle light control signal of turn signal switch and the connection signal of connector, to realize the synchronous control of first turn signal lamp and second turn signal lamp.The beneficial effects of the present application are: by single controller to control the turn signal lamp of tractor and the turn signal lamp of trailer, can quickly and accurately synchronous control the turn signal lamp of tractor and the turn signal lamp of trailer.

Description

Technical Field

[0001] This invention relates to the field of vehicle lighting control, and more particularly to a vehicle lighting control system, a vehicle lighting control method, and a multi-channel controller. Background Technology

[0002] To meet the needs of transportation and leisure activities, the demand for all-terrain vehicle towing is also increasing. During the movement of a tractor-trailer, turn signals are a crucial signal, providing surrounding road users with information about the direction of both the tractor and trailer.

[0003] In existing technical solutions, only the tractor unit's turn signal controller is designed, and there is no separate turn signal controller for the trailer, nor is there a turn signal controller in the trailer. When the tractor unit tows the trailer, the tractor unit's turn signal controller needs to control the turn signals of both the tractor unit and the trailer simultaneously. Since the tractor unit's turn signal controller controls the flashing frequency of the turn signals based on the current from the tractor unit's turn signals, when the trailer is engaged, the tractor unit's turn signal controller supplies the current from the tractor unit's turn signals to the trailer's turn signals, causing a current shunting in the tractor unit's turn signal output. At this time, if the trailer's turn signal power is too high, the tractor unit's turn signal controller cannot output sufficient current. Therefore, the flashing frequency of the tractor unit's and trailer's turn signals will decrease or fail. Furthermore, when the trailer's turn signals malfunction, the tractor unit's turn signal controller cannot detect the fault. Summary of the Invention

[0004] The purpose of this invention is to provide a vehicle lighting control system, a vehicle lighting control method, and a multi-channel controller, which controls the turn signals of the tractor and the trailer using a single controller. This allows for fast and accurate synchronous control of the turn signals of the tractor and the trailer, and provides sufficient operating current to maintain a constant flashing frequency of the turn signals.

[0005] To achieve the above objectives, the present invention provides a vehicle lighting control system, comprising: a turn signal assembly including a first turn signal mounted on a tractor and a second turn signal mounted on a trailer; a turn signal switch mounted on the tractor; and a connector mounted on the tractor and electrically connected to the second turn signal. The vehicle lighting control system further comprises: a multiplexer, electrically connected to the first turn signal and the turn signal switch, and electrically connected to the turn signal switch, the multiplexer controlling the first turn signal according to a vehicle lighting control signal from the turn signal switch; the multiplexer also electrically connected to the connector, the connector providing a connection signal to the multiplexer; and the multiplexer controlling the second turn signal according to the vehicle lighting control signal from the turn signal switch and the connection signal from the connector, so that the multiplexer synchronously controls the first and second turn signals.

[0006] Furthermore, the multiplexer controls the activation of the first turn signal when the synchronization time is reached; the synchronization time is used to indicate the synchronous activation time of the first and second turn signals; the multiplexer controls the activation of the second turn signal when the synchronization time is reached based on the headlight control signal and the connection signal.

[0007] Furthermore, the first turn signal and the second turn signal are each set to several working modes, including abnormal mode, alarm mode and normal mode. The alarm mode has the first priority, the abnormal mode has the second priority and the normal mode has the third priority. The first priority is higher than the second priority and the second priority is higher than the third priority.

[0008] Furthermore, the multi-channel controller includes a first current detection module; when the multi-channel controller receives the headlight control signal, the first current detection module acquires the operating current of the first turn signal within a preset time and judges the operating current; when the operating current is a normal current, the multi-channel controller controls the first turn signal to execute the normal mode; when the operating current is an open circuit current or a short circuit current, the multi-channel controller controls the first turn signal to execute the abnormal mode.

[0009] Furthermore, the multi-channel controller also includes a second current detection module; when the multi-channel controller receives the headlight control signal and the connection signal, the second current detection module acquires the operating current of the second turn signal within a preset time and judges the operating current; when the operating current is normal, the multi-channel controller controls the second turn signal to execute the normal mode; when the operating current is an open circuit current or a short circuit current, the multi-channel controller controls the second turn signal to execute the abnormal mode.

[0010] Furthermore, the vehicle lighting control system also includes a hazard warning switch; the hazard warning switch outputs a hazard warning signal to a multiplexer; the multiplexer controls the first turn signal to execute the warning mode, and the multiplexer controls the second turn signal to execute the warning mode, wherein the warning mode is that the first turn signal and the second turn signal flash simultaneously at the same frequency.

[0011] Furthermore, the connection signal includes a first connection signal and a second connection signal; when the connector outputs the first connection signal, the tractor and the trailer are connected; when the connector outputs the second connection signal, the tractor and the trailer are disconnected.

[0012] Furthermore, the connector includes: a detection device for detecting whether the trailer is connected to the tractor; and detection contacts for outputting different electrical signals to the detection device when the trailer is connected / disconnected.

[0013] To achieve the above objectives, the present invention provides a vehicle lighting control method, the vehicle lighting control method comprising:

[0014] The multi-channel controller acquires the headlight control signal output from the turn signal switch and the connector connection signal;

[0015] The multi-channel controller controls the first turn signal based on the acquired headlight control signal, and controls the second turn signal based on the acquired headlight control signal and connection signal.

[0016] To achieve the above objectives, the present invention provides a multi-channel controller, which includes: a plurality of output terminals for controlling a first turn signal and a second turn signal; and a plurality of input terminals for receiving headlight control signals output from a turn signal switch and connection signals output from a connector.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] By using a multi-channel controller to control the first and second turn signals separately, the technical problem in the prior art where a single turn signal controller cannot provide sufficient current when controlling both the first and second turn signals simultaneously can be solved. This allows the first and second turn signals to work independently, be controlled synchronously, and have sufficient operating current to maintain a constant flashing frequency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the tractor vehicle of the present invention.

[0020] Figure 2 This is a first structural schematic diagram of the vehicle lighting control system of the present invention.

[0021] Figure 3 This is a schematic diagram of the second structure of the vehicle lighting control system of the present invention.

[0022] Figure 4 This is a schematic diagram of the connector structure of the present invention.

[0023] Figure 5 This is a schematic diagram of the detection contact of the present invention.

[0024] Figure 6 This is a schematic diagram of the detection device of the present invention.

[0025] Figure 7 This is a flowchart illustrating the vehicle headlight control method of the present invention.

[0026] Figure 8 This is a schematic diagram of the third structure of the vehicle lighting control system of the present invention.

[0027] Figure 9 This is a first structural schematic diagram of the multi-channel controller of the present invention.

[0028] Figure 10This is a schematic diagram of the second structure of the multi-channel controller of the present invention. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions in specific embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] like Figure 1 As shown, a towing vehicle 100, specifically an all-terrain vehicle, is described. The towing vehicle 100 includes a seat system 11, a frame 12, a steering system 13, a suspension system 14, a body panel 15, and a running gear 16. The seat system 11 is at least partially mounted on the frame 12 and provides back support for a user. The seat system 11 may be a seat back. The frame 12 supports the seat system 11, the steering system 13, and the body panel 15. The body panel 15 is at least partially mounted on the frame 12, serving to cover the frame 12 and provide impact protection. The running gear 16 includes a front wheel assembly 161 and a rear wheel assembly 162 disposed below the frame 12, and is connected to the frame 12 via the suspension system 14. The steering system 13 is at least partially mounted on the frame 12 and controls the direction of travel of the front wheel assembly 161. The tractor unit 100 also includes a lighting control system 200, which controls the turn signals of the tractor unit 100. A trailer 300 can be any vehicle towed by the tractor unit 100. The lighting control system 200 can control the turn signals of the trailer 300. Specifically, the lighting control system 200 can simultaneously control the turn signals of both the tractor unit 100 and the trailer 300. The lighting control system 200 will be described in detail below.

[0031] like Figure 2As shown, a vehicle lighting control system 200 includes a turn signal switch 21, a multiplexer 22, a turn indicator 23, a connector 24, a first turn signal 25, and a second turn signal 26. The first turn signal 25 is at least partially mounted on a tractor unit 100 and indicates the direction of the tractor unit 100's turn. The second turn signal 26 is at least partially mounted on a trailer unit 300 and indicates the direction of the trailer unit 300's turn. The connector 24 is at least partially mounted on the tractor unit 100, connecting the trailer unit 300 and the second turn signal 26. Specifically, the connector 24 is mechanically connected to the trailer unit 300 and electrically connected to the second turn signal 26. When the tractor unit 100 needs to tow the trailer unit 300, the tractor unit 100 and the trailer unit 300 are connected via the connector 24. The multiplexer 22 connects to the turn signal switch 21, the connector 24, the first turn signal 25, and the turn indicator 23. Specifically, the multiplexer 22 is electrically connected to the turn signal switch 21, and also electrically connected to the connector 24. The multiplexer 22 is electrically connected to the first turn signal 25, and also electrically connected to the turn indicator 23. The turn signal switch 21 is at least partially located on the tractor 100, and provides a headlight control signal to the multiplexer 24, enabling the multiplexer 24 to control the headlight status of the first turn signal 25 and the second turn signal 26. Specifically, the multiplexer 22 controls the first turn signal 25 based on the received headlight control signal. The connector 24 provides a connection signal to the multiplexer 22. The multiplexer 22 controls the second turn signal 26 based on the received headlight control signal and the connection signal output by the connector 24. The turn indicator 23 is at least partially located on the tractor 100 and is used to display the turning status. The present invention controls the first turn signal 25 and the second turn signal 26 separately through a multi-channel controller 22, which solves the technical problem in the prior art that when a turn signal controller controls the first turn signal and the second turn signal at the same time, the turn signal controller itself cannot provide enough current. Thus, the first turn signal 25 and the second turn signal 26 can work independently and can also be controlled synchronously, and can have enough working current to keep the flashing frequency of the vehicle lights constant.

[0032] In this embodiment, connector 24 outputs a connection signal to multiplexer 22, which indicates the connection status of tractor 100 and trailer 300. Multiplexer 22 controls the second turn signal 26 based on the acquired headlight control signal and connection signal, thereby achieving synchronous control of the first turn signal 25 and the second turn signal 26 by multiplexer 22, and ensuring sufficient operating current to maintain a constant headlight flashing frequency.

[0033] As one implementation, the first turn signal 25 and the second turn signal 26 are controlled by a multiplexer 22 to achieve synchronized control of their states. The multiplexer 22 receives the vehicle light control signal output from the turn signal switch 21 and sets the synchronization time for the first turn signal 25 and the second turn signal 26. The synchronization time refers to the synchronized activation time of the first turn signal 25 and the second turn signal 26, thus achieving synchronized control of the states of the first turn signal 25 and the second turn signal 26 by setting the synchronization time. The multiplexer 22 activates the first turn signal 25 when the synchronization time is reached. The multiplexer 22 receives the vehicle light control signal and the connection signal from the connector 24, and activates the second turn signal 26 when the synchronization time is reached, thereby achieving synchronized control of the states of the first turn signal 25 and the second turn signal 26. When the multiplexer 22 does not receive the connection signal from the connector 24, it indicates that the trailer 300 and the tractor 100 are not connected; in this case, the multiplexer 22 does not control the second turn signal 26. The first turn signal 25 and the second turn signal 26 have the same flashing frequency, which can be set by the multiplexer 22.

[0034] As one implementation method, the synchronization time is set to be greater than or equal to 1ms and less than or equal to 5ms. Specifically, the synchronization time can be adjusted in real time according to requirements. When the synchronization time is reached and the multiplexer 22 receives the connection signal, the multiplexer 22 controls the first turn signal 25 to start flashing, and simultaneously controls the second turn signal 26 to start flashing via connector 24. Based on the above implementation method, the multiplexer 22 synchronously controls the first turn signal 25 and the second turn signal 26, thereby achieving synchronized state control of the first turn signal 25 and the second turn signal 26.

[0035] As one implementation, the first turn signal 25 and the second turn signal 26 are each configured with several operating modes, including an abnormal mode, an alarm mode, and a normal mode. These operating modes are assigned priorities: the alarm mode has the highest priority, the abnormal mode has the second highest priority, and the normal mode has the third highest priority. The first priority is higher than the second priority, and the second priority is higher than the third priority. By setting the priorities for these operating modes, the multi-channel controller 22 can determine the operating mode of the first turn signal 25 and the second turn signal 26 based on the priority, thereby selecting the appropriate operating mode in urgent situations and achieving synchronized control of the first turn signal 25 and the second turn signal 26.

[0036] In this embodiment, to facilitate awareness of the movement of the tractor 100 among vehicles surrounding it, the driver operates the turn signal switch 21 when a turn is required. This causes the turn signal switch 21 to output a vehicle light control signal to the multiplexer 24, thereby enabling the multiplexer 24 to activate the first turn signal 25 via the turn signal switch 21. Specifically, when the turn signal switch 21 is activated, the multiplexer 22 receives the vehicle light control signal. Since the front and rear turn signals of the tractor 100 are activated and deactivated simultaneously, both the front and / or rear turn signals of the tractor 100 can serve as the control basis for the first turn signal 25 and the second turn signal 26. The front turn signal of the tractor 100 refers to the turn signal closest to the front wheel assembly 161, and the rear turn signal of the tractor 100 refers to the turn signal closest to the rear wheel assembly 162.

[0037] like Figure 3 As shown, in one implementation, the vehicle lighting control system 200 also includes a hazard warning switch 27, which is connected to and electrically connected to a multiplexer 22. When there is an emergency hazard around the towing vehicle 100, the driver can use the hazard warning switch 27 to issue a warning. Specifically, the hazard warning switch 27 outputs a hazard warning signal to the multiplexer 22, which then controls all turn signals of the towing vehicle 100 to execute a warning mode. Simultaneously, if the multiplexer 22 receives a connection signal, it controls all turn signals of the trailer 300 to execute a warning mode via connector 24. In this embodiment, if the multiplexer 22 receives a connection signal, all turn signals of the trailer 300 and all turn signals of the towing vehicle 100 flash simultaneously at the same frequency in the warning mode.

[0038] As one implementation, after the multiplexer 22 receives the headlight control signal output from the turn signal switch 21, it determines whether the first turn signal 25 is malfunctioning by detecting the operating current of the first turn signal 25. Figure 3As shown, the multi-channel controller 22 includes a first current detection module 221. After receiving the vehicle light control signal, the first current detection module 221 acquires the operating current of the first turn signal 25 within a preset time and judges the operating current of the first turn signal 25. The preset time can be adjusted according to requirements. The operating current of the first turn signal 25 includes normal current, open-circuit current, and short-circuit current. When the operating current is normal, the multi-channel controller 22 controls the first turn signal 25 to execute the normal mode, that is, the first turn signal 25 flashes at a first flashing frequency. When the operating current is open-circuit current or short-circuit current, the multi-channel controller 22 controls the first turn signal 25 to execute the abnormal mode, which includes an open-circuit state or a short-circuit state. Specifically, when the operating current is open-circuit current, the abnormal mode includes an open-circuit state. When the operating current is short-circuit current, the abnormal mode includes a short-circuit state. In the open-circuit state, the first turn signal 25 flashes at a second flashing frequency, which is greater than the first flashing frequency. In the short-circuit state, the first turn signal 25 does not work / does not flash. When a short circuit is detected in the first turn signal 25, the multiplexer 22 stops outputting current to the first turn signal 25, rendering it inoperable. Within a preset time period, the first current detection module 221 re-detects the operating current of the first turn signal 25 and executes corresponding controls based on the detection results. The short-circuit current of the first turn signal 25 is much greater than its normal current, while its open-circuit current is much smaller than its normal current. Therefore, by detecting short circuits and open circuits in the first turn signal 25, and issuing corresponding fault alarms based on different circuit faults, timely fault diagnosis can be performed, facilitating real-time monitoring of the first turn signal 25's status.

[0039] As one implementation, after the multiplexer 22 acquires the headlight control signal and the connector 24 connection signal, it determines whether there is any abnormality in the second turn signal 26 by detecting the operating current of the second turn signal 26. Figure 3As shown, the multi-channel controller 22 also includes a second current detection module 222. After receiving the headlight control signal and the connection signal from the connector 24, the second current detection module 222 acquires the operating current of the second turn signal 26 within a preset time and judges the operating current of the second turn signal 26. The preset time can be adjusted according to requirements. The operating current of the second turn signal 26 is basically the same as that of the first turn signal 25, that is, the operating current of the second turn signal 26 includes normal current, open-circuit current, and short-circuit current. When the operating current is normal, the multi-channel controller 22 controls the second turn signal 26 to execute the normal mode, that is, the second turn signal 26 flashes at a first flashing frequency. When the operating current is an open-circuit current or a short-circuit current, the multi-channel controller 22 controls the second turn signal 26 to execute the abnormal mode, which includes an open-circuit state or a short-circuit state. Specifically, when the operating current is an open-circuit current, the abnormal mode includes an open-circuit state. When the operating current is a short-circuit current, the abnormal mode includes a short-circuit state. In the open-circuit state, the second turn signal 26 flashes at a second flashing frequency, which is greater than the first flashing frequency. In a short-circuit state, the second turn signal 26 is not operational. When a short-circuit condition is detected in the second turn signal 26, the multiplexer 22 stops outputting current to the second turn signal 26 and controls its shutdown. The second turn signal 26 is then deactivated, and within a preset time period, the second current detection module 222 re-detects the operating current of the second turn signal 26, and executes corresponding control measures based on the detection results. Therefore, by performing short-circuit and open-circuit detection on the second turn signal 26 and issuing corresponding fault alarms based on different circuit faults, timely fault diagnosis can be performed, facilitating real-time monitoring of the second turn signal 26's status.

[0040] In both implementation methods described above, the multi-channel controller 22 can control the first turn signal 25 and the second turn signal 26 to work synchronously. When both the first turn signal 25 and the second turn signal 26 are in normal mode, the first turn signal 25 of the tractor 100 and the second turn signal 26 of the trailer 300 flash simultaneously at a first frequency. When the first turn signal 25 is in normal mode and the second turn signal 26 is in abnormal mode, if the second turn signal 26 is in a short-circuit state, the first turn signal 25 flashes at the first frequency, while the second turn signal 26 remains off; when the first turn signal 25 is in abnormal mode and the second turn signal 26 is in normal mode, if the first turn signal 25 is in a short-circuit state, the first turn signal 25 remains off, and the second turn signal 26 flashes at the first frequency, thus achieving a fast-flash function when a light is missing, facilitating real-time monitoring of the status of the first turn signal 25 and the second turn signal 26.

[0041] In one implementation, the multiplexer 22 obtains the connection status of the tractor 100 and the trailer 300 by identifying the connection signal. When the connector 24 outputs the first connection signal, it indicates that the tractor 100 and the trailer 300 are connected, and the multiplexer 22 uses the acquired connection signal and the headlight control signal as the basis for controlling the second turn signal 26. When the connector 24 outputs the second connection signal, it indicates that the tractor 100 and the trailer 300 are disconnected, and the multiplexer 22 does not control the second turn signal 26.

[0042] like Figure 4 As shown, in one implementation, connector 24 can be a socket. Connector 24 includes detection contacts 241 and detection device 242, which is used to detect whether trailer 300 is connected to tractor 100. Figure 5 As shown, the detection contact 241 is used to output different electrical signals to the detection device 242 when the trailer 300 is connected or disconnected. Figure 6 As shown, the detection device 242 includes a fixed frame 242a, a connecting bracket 242b, a slide rail 242c, a spring 242d, and a contact connector 242f. The contact connector 242f has a first state and a second state. The first state refers to the state where it is disconnected from the detection contact 241, and the second state refers to the state where it is connected to the detection contact 241. The contact connector 242f is fixedly connected to the connecting bracket 242b. The slide rail 242c passes through the connecting bracket 242b and is fixedly connected to it. One end of the slide rail 242c is connected to the fixed frame 242a, and the slide rail 242c can move relative to the fixed frame 242a, thereby allowing the connecting bracket 242b and the contact connector 242f to move relative to the fixed frame 242a. Furthermore, the slide rail 242c is at least partially disposed within the spring 242d. When the trailer 300 is connected to the connector 24, the connecting assembly on the trailer 300 pushes the slide rail 242c to move, causing the connecting bracket 242b and the contact connector 242f to also move. This places the contact connector 242f in a first state, disconnecting the detection contact 241 from the bottom contact connector 242f. The spring 242d is compressed by the connecting bracket 242b, and the detection device 242 outputs a first connection signal. The connecting assembly on the trailer 300 refers to the device on the trailer 300 used to connect to the connector 24, thereby connecting the trailer 300 to the tractor 100. When the trailer 300 is not connected to the connector 24, the contact connector 242f is in a second state, connected to the detection contact 241, and the detection device 242 outputs a second connection signal. In one implementation, the first connection signal is a high-impedance signal, and the second connection signal is a low-impedance signal.

[0043] like Figure 7 As shown, the vehicle headlight control methods include:

[0044] S1: The multiplexer 22 acquires the headlight control signal output by the turn signal switch 21 and the connection signal of the connector 24;

[0045] S2: The multiplexer 22 controls the first turn signal 25 according to the acquired headlight control signal, and controls the second turn signal 26 according to the acquired headlight control signal and connection signal.

[0046] When the turn signal switch 21 is turned on, the multiplexer 22 receives the vehicle light control signal. The multiplexer 22 receives the vehicle light control signal output from the turn signal switch 21, sets the synchronization time of the first turn signal 25 and the second turn signal 26, and controls the first turn signal 25 to turn on when the synchronization time is reached. The multiplexer 22 receives the connection signal from the connector 24 and controls the second turn signal 26 to turn on when the synchronization time is reached, thus achieving synchronous operation of the first turn signal 25 and the second turn signal 26. When the multiplexer 22 does not receive the connection signal from the connector 24, it indicates that the trailer 300 and the tractor 100 are not connected. At this time, the multiplexer 22 does not control the second turn signal 26. Through the multiplexer 22, the first turn signal 25 and the second turn signal 26 are synchronously controlled, thereby achieving synchronized state control of the first turn signal 25 and the second turn signal 26.

[0047] like Figure 8 As shown, in the vehicle lighting control system 200, the turn signal switch 21 is electrically connected to the multiplexer 22. The multiplexer 22 is electrically connected to the first turn signal 25. The multiplexer 22 is electrically connected to the connector 24, and the connector 24 is electrically connected to the second turn signal 26. The turn signal switch 21 outputs a vehicle lighting control signal to the multiplexer 22 to control the lighting status of the first turn signal 25 and the second turn signal 26. The multiplexer 22 receives the vehicle lighting control signal output by the turn signal switch 21 and controls the first turn signal 25 according to the vehicle lighting control signal. The connector 24 outputs a connection signal to the multiplexer 22 to indicate the connection status of the tractor 100 and the trailer 300. The multiplexer 22 controls the second turn signal 26 according to the received vehicle lighting control signal and connection signal.

[0048] To facilitate awareness of the movement of the tractor 100 among surrounding vehicles, the driver activates the first turn signal 25 via the turn signal switch 21 when a turn is required. Specifically, when the turn signal switch 21 is activated, the multiplexer 22 receives a vehicle light control signal. Since the front turn signal and / or rear turn signal of the tractor 100 are activated and deactivated simultaneously, both the front and / or rear turn signals can serve as the basis for controlling the first turn signal 25 and the second turn signal 26.

[0049] As one implementation, after the multiplexer 22 receives the headlight control signal output by the turn signal switch 21, it determines whether the first turn signal 25 is malfunctioning by detecting its operating current. The multiplexer 22 includes a first current detection module 221. Upon receiving the headlight control signal, the first current detection module 221 acquires the operating current of the first turn signal 25 within a preset time and judges the current. When the operating current is normal, the multiplexer 22 controls the first turn signal 25 to execute the normal mode, i.e., the first turn signal 25 flashes at a first flashing frequency. When the operating current is an open-circuit current or a short-circuit current, the multiplexer 22 controls the first turn signal 25 to execute the abnormal mode, which includes an open-circuit state or a short-circuit state. In the open-circuit state, the first turn signal 25 flashes at a second flashing frequency, which is greater than the first flashing frequency. In the short-circuit state, the first turn signal 25 does not operate.

[0050] As one implementation, after the multiplexer 22 acquires the headlight control signal and the connection signal from the connector 24, it detects the operating current of the second turn signal 26 to determine if there is any abnormality in the second turn signal 26. The multiplexer 22 includes a second current detection module 222. After receiving the headlight control signal and the connection signal from the connector 24, the second current detection module 222 acquires the operating current of the second turn signal 26 within a preset time and makes a judgment based on the operating current. When the operating current is normal, the multiplexer 22 controls the second turn signal 26 to execute the normal mode, that is, the second turn signal 26 flashes at a first flashing frequency. When the operating current is an open-circuit current or a short-circuit current, the multiplexer 22 controls the second turn signal 26 to execute the abnormal mode, which includes an open-circuit state or a short-circuit state. In the open-circuit state, the second turn signal 26 flashes at a second flashing frequency, which is greater than the first flashing frequency. In the short-circuit state, the second turn signal 26 does not operate.

[0051] In one implementation, when the multiplexer 22 receives a connection signal from the connector 24, it indicates that the tractor 100 and the trailer 300 are connected. The multiplexer 22 uses the acquired connection signal and the headlight control signal as the basis for controlling the second turn signal 26. When the multiplexer 22 receives a high-impedance signal from the connector 24, the tractor 100 and the trailer 300 are connected; when the multiplexer 22 receives a low-impedance signal from the connector 24, the tractor 100 and the trailer 300 are disconnected.

[0052] like Figure 9As shown, in one implementation, the multiplexer 22 includes a control body 223, a plurality of output terminals 224, and a plurality of input terminals 225. The control body 223 is connected to the plurality of output terminals 224 and the plurality of input terminals 225. The plurality of output terminals 224 are at least partially disposed on the control body 223 and are used to control the first turn signal 25 and the second turn signal 26; the plurality of input terminals 225 are at least partially disposed on the control body 223 and are used to receive the headlight control signal output by the turn signal switch 21 and the connection signal sent by the connector 24.

[0053] Specifically, the plurality of output terminals 224 include a first output terminal 224a, a second output terminal 224b, a third output terminal 224c, and a fourth output terminal 224d. Both the first output terminal 224a and the second output terminal 224b are connected to the first turn signal 25. Specifically, the first turn signal 25 includes a first front turn signal 251, a first rear turn signal 252, a second front turn signal 253, and a second rear turn signal 254. The first output terminal 224a is connected to the first front turn signal 251 and the first rear turn signal 252, respectively, and the second output terminal 224b is connected to the second front turn signal 253 and the second rear turn signal 254, respectively. Specifically, the first front turn signal 251 refers to the front turn signal on the left side of the tractor unit 100, the second front turn signal 253 refers to the front turn signal on the right side of the tractor unit 100, the first rear turn signal 252 refers to the rear turn signal on the left side of the tractor unit, the second rear turn signal 254 refers to the rear turn signal on the right side of the tractor unit, the front turn signal of the tractor unit 100 refers to the turn signal near the front wheel assembly 161, and the rear turn signal of the tractor unit 100 refers to the turn signal near the rear wheel assembly 162. The third output terminal 224c and the fourth output terminal 224d are both connected to the second turn signal 26. Specifically, the second turn signal 26 includes a third turn signal 261 and a fourth turn signal 262. The third output terminal 224c is connected to the third turn signal 261, and the fourth output terminal 224d is connected to the fourth turn signal 262. The third turn signal 261 refers to the left turn signal of the trailer, and the fourth turn signal 262 refers to the right turn signal of the trailer.

[0054] In addition, both the first output terminal 224a and the second output terminal 224b are connected to the turn indicator 23 to display the turn signal status for the driver's convenience.

[0055] like Figure 10 As shown, specifically, the input terminals 225 include a first input terminal 225a, a second input terminal 225b, and a third input terminal 225c. The first input terminal 225a and the second input terminal 225b are both connected to the turn signal switch 21 to receive the headlight control signal output by the turn signal switch 21. The third input terminal 225c is connected to the connector 24 to receive the connection signal sent by the connector 24. When the trailer 300 is connected to the connector 24, the connection signal is grounded. After the connector 24 is connected to the second turn signal 26, the multiplexer 22 continues to operate in normal mode.

[0056] like Figure 10 As shown, the turn signal switch 21 includes a first switch 211 and a second switch 212. The first switch 211 outputs a left-turn headlight control signal to the multiplexer 24, and the second switch 212 outputs a right-turn headlight control signal to the multiplexer 24. A first input terminal 225a is connected to the first switch 211, and a second input terminal 225b is connected to the second switch 212, thereby enabling the multiplexer 22 to obtain the headlight control signal from the turn signal switch 21. Specifically, the first switch 211 outputs a left-turn headlight control signal to the multiplexer 24, which controls the first front turn signal 251 and the first rear turn signal 252 to provide a left-turn indication for the tractor 100. The second switch 212 outputs a right-turn headlight control signal to the multiplexer 24, which controls the second front turn signal 253 and the second rear turn signal 254 to provide a right-turn indication for the tractor 100.

[0057] In this embodiment, the vehicle lighting control system 200 also includes an ignition switch 28. The ignition switch 28 is used to turn off the vehicle lighting control system 200 when the voltage is insufficient, thereby maintaining a certain voltage in the vehicle lighting control system 200 and ensuring its normal operation. Figure 8 As shown, the multi-channel controller 22 also includes a third voltage detection module 226, which is used to detect the voltage of the vehicle lighting control system 200. When the ignition switch 28 is closed and the hazard warning switch 27 is open, the hazard warning switch 27 sends a hazard warning signal, and the vehicle lighting control system 200 continues to be powered. When the third voltage detection module 226 detects that the voltage of the vehicle lighting control system 200 is less than a first set value, the hazard warning signal function is turned off, that is, the hazard warning switch 27 no longer sends a hazard warning signal. When the ignition switch 28 is open and the hazard warning switch 27 is open, the hazard warning switch 27 continues to send a hazard warning signal, thereby achieving the goal of shutting down the vehicle lighting control system 200 when the voltage of the vehicle lighting control system 200 is insufficient, thus maintaining a certain voltage for the vehicle lighting control system 200 and ensuring its normal operation. The first set value refers to a voltage greater than or equal to 11V and less than or equal to 12V. It is understood that the first set value can also be adjusted according to requirements.

[0058] The input terminals 225 also include a fourth input terminal 225d and a fifth input terminal 225f. The fourth input terminal 225d is connected to the hazard alarm switch 27, and the fifth input terminal 225f is connected to the ignition switch 28. The fourth input terminal 225d is used to output the hazard alarm signal to the multiplexer 22, and the fifth input terminal 225f is used to output the signal from the ignition switch 28 to the multiplexer 22, thereby enabling the multiplexer 22 to synchronously control the first turn signal 25 and the second turn signal 26 in alarm mode.

[0059] In addition, the multiplexer 22 is also provided with a power input / output terminal, which is used to connect a power supply to power the multiplexer 22.

[0060] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A vehicle lighting control system, comprising: A turn signal assembly, the turn signal assembly including a first turn signal disposed on a tractor and a second turn signal disposed on a trailer; A turn signal switch, wherein the turn signal switch is mounted on the tractor unit; A connector, wherein the connector is disposed on the tractor and forms an electrical connection with the second turn signal; characterized in that, The vehicle lighting control system also includes: A multi-channel controller is electrically connected to the first turn signal and to the turn signal switch. The multi-channel controller is used to control the first turn signal according to the headlight control signal of the turn signal switch. The multiplexer is also electrically connected to the connector, and the connector provides a connection signal to the multiplexer; The multi-channel controller controls the second turn signal according to the headlight control signal of the turn signal switch and the connection signal of the connector, so that the multi-channel controller synchronously controls the first turn signal and the second turn signal; The vehicle lighting control system also includes an ignition switch and a hazard alarm switch that outputs a hazard alarm signal to the multi-channel controller. The ignition switch is used to shut down the vehicle lighting control system when the voltage of the vehicle lighting control system is insufficient. The multi-channel controller includes a third voltage detection module for detecting the voltage of the vehicle lighting control system. When the ignition switch is closed, the hazard alarm switch is opened, and the hazard alarm switch sends the hazard alarm signal, while the vehicle lighting control system continues to be powered. When the third voltage detection module detects that the voltage of the vehicle lighting control system is less than a first set value, the hazard alarm signal function is turned off.

2. The vehicle lighting control system according to claim 1, characterized in that, The multiplexer controls the activation of the first turn signal when the synchronization time is reached; the synchronization time is used to indicate the synchronous activation time of the first turn signal and the second turn signal; the multiplexer controls the activation of the second turn signal when the synchronization time is reached based on the vehicle light control signal and the connection signal.

3. The vehicle lighting control system according to claim 2, characterized in that, The first turn signal and the second turn signal are each configured with several working modes, including an abnormal mode, an alarm mode and a normal mode. The alarm mode has a first priority, the abnormal mode has a second priority and the normal mode has a third priority, wherein the first priority is higher than the second priority and the second priority is higher than the third priority.

4. The vehicle lighting control system according to claim 3, characterized in that, The multi-channel controller includes a first current detection module. When the multi-channel controller receives the headlight control signal, the first current detection module acquires the operating current of the first turn signal within a preset time and judges the operating current. When the operating current is a normal current, the multi-channel controller controls the first turn signal to execute the normal mode. When the operating current is an open circuit current or a short circuit current, the multi-channel controller controls the first turn signal to execute the abnormal mode.

5. The vehicle lighting control system according to claim 4, characterized in that, The multi-channel controller further includes a second current detection module; when the multi-channel controller receives the headlight control signal and the connection signal, the second current detection module acquires the operating current of the second turn signal within the preset time and judges the operating current; when the operating current is a normal current, the multi-channel controller controls the second turn signal to execute the normal mode; when the operating current is an open circuit current or a short circuit current, the multi-channel controller controls the second turn signal to execute the abnormal mode.

6. The vehicle lighting control system according to claim 4, characterized in that, The multi-channel controller controls the first turn signal to execute the alarm mode, and the multi-channel controller controls the second turn signal to execute the alarm mode. The alarm mode is that the first turn signal and the second turn signal flash simultaneously at the same frequency.

7. The vehicle lighting control system according to claim 1, characterized in that, The connection signal includes a first connection signal and a second connection signal; when the connector outputs the first connection signal, the tractor is connected to the trailer; when the connector outputs the second connection signal, the tractor and the trailer are disconnected.

8. The vehicle lighting control system according to claim 1, characterized in that, The connector includes: A detection device is used to detect whether the trailer is connected to the tractor. The detection contacts are used to output different electrical signals to the detection device when the trailer is connected or disconnected.

9. A vehicle lighting control method, applicable to the vehicle lighting control system according to any one of claims 1 to 8, characterized in that, The vehicle light control method includes: The multiplexer acquires the headlight control signal output by the turn signal switch and the connector connection signal; The multi-channel controller controls the first turn signal based on the acquired headlight control signal, and controls the second turn signal based on the acquired headlight control signal and connection signal.

10. A multi-channel controller, applicable to the vehicle lighting control system according to any one of claims 1 to 8, characterized in that, The multiplexer includes: Several output terminals are used to control the first turn signal and the second turn signal; Several input terminals are used to receive the headlight control signal output by the turn signal switch and the connection signal output by the connector.

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