A vehicle signal light control system

Abstract

This invention discloses a vehicle traffic light control system. The system includes: a traffic light group comprising at least two independently controllable traffic lights; a drive module including a first drive submodule; a turn signal switch connected in series between the first drive submodule and the traffic light group, used to control the first drive submodule and the at least two traffic lights to selectively switch on and off; and a synchronized trip light switch connected in series between the first drive submodule and the traffic light group, used to control the first drive submodule and the at least two traffic lights to synchronously switch on and off. The first drive submodule is configured to send a warning drive signal to the traffic light group via the turn signal switch and / or the synchronized trip light switch. The technical solution provided by this invention solves the problems of complex wiring and short service life caused by easy oxidation and damage of switch contacts in existing vehicle traffic light control systems.

Description

Technical Field

[0001] This invention relates to the field of control technology, and in particular to a vehicle signal light control system. Background Technology

[0002] The vehicle signal light control system is used to control the illumination of vehicle signal lights and synchronized flashing lights to meet the signal warning needs during vehicle operation.

[0003] In existing vehicles, signal lights are usually activated by the driver operating the left and right shift mechanisms, with the shifting action directly controlling the on / off state of the corresponding signal light system. In contrast, synchronized flashing lights use a separate wiring connection method, that is, through an independent wiring layout, the synchronized flashing light control switch is directly connected to the left and right signal light circuits, thereby achieving the effect of the left and right lights flashing simultaneously.

[0004] However, the separate wiring layout, which includes multiple signal light drivers, makes the vehicle's signal light system wiring complex, increasing the difficulty of overall system design and subsequent maintenance. Furthermore, when the signal lights and synchronized flashing lights are operating, the switch contacts need to carry a large current, which can easily lead to contact oxidation and burning over time, reducing vehicle driving safety and component lifespan. Summary of the Invention

[0005] This invention provides a vehicle signal light control system to solve the problems of complex wiring and short service life caused by easy oxidation and damage of switch contacts in existing vehicle signal light control systems.

[0006] This invention provides a vehicle traffic light control system, comprising: a traffic light group including at least two independently controllable traffic lights; a drive module including a first drive submodule; a turn signal switch connected in series between the first drive submodule and the traffic light group, used to control the first drive submodule and at least two traffic lights to selectively switch on and off; and a synchronous flashing switch connected in series between the first drive submodule and the traffic light group, used to control the first drive submodule and at least two traffic lights to synchronously switch on and off; the first drive submodule is used to send a warning drive signal to the traffic light group through the turn signal switch and / or the synchronous flashing switch.

[0007] Optionally, at least two traffic lights include a left traffic light and a right traffic light; the turn switch includes: an input terminal connected to the first drive submodule; a first output terminal connected to the left traffic light; and a second output terminal connected to the right traffic light; the turn switch is used to switch between an off state, a left turn state, and a right turn state according to user operation; wherein, in the off state, the input terminal is not connected to either the first or second output terminal; in the left turn state, the input terminal is connected to the first output terminal; and in the right turn state, the input terminal is connected to the second output terminal; the first drive submodule is also used to send a warning drive signal to the corresponding traffic light through the turn switch when the turn switch is in the left turn state or the right turn state.

[0008] Optionally, at least two traffic lights include a left traffic light and a right traffic light; one end of the synchronous trip light switch is connected to the first drive submodule, and the other end of the synchronous trip light switch is connected to the left traffic light and the right traffic light respectively; the first drive submodule is also used to synchronously send warning drive signals to the left traffic light and the right traffic light when the synchronous trip light switch is turned on.

[0009] Optionally, it also includes a vehicle control module, which is connected to the first drive submodule. The vehicle control module is used to generate and continuously send a first drive signal to the first drive submodule when it detects that the vehicle is powered on. The first drive submodule is also used to generate and send a warning drive signal to the signal light group after receiving the first drive signal.

[0010] Optionally, the system also includes a monitoring module, which is communicatively connected to the first drive submodule and the vehicle control module. The monitoring module generates and sends a first feedback signal to the vehicle control module indicating that the signal light group is in a driven state when the first drive submodule drives the signal light group, and generates and sends a second feedback signal to the vehicle control module indicating that the signal light group is in a non-driven state when the first drive submodule does not drive the signal light group. The drive module also includes a second drive submodule, which is communicatively connected to the vehicle control module and connected to the signal light group. The second drive submodule generates and sends a warning drive signal to the signal light group upon receiving an externally input second drive signal. The vehicle control module also monitors the vehicle's operating status in real time, determines whether the vehicle has entered an emergency state based on the vehicle's operating status, and generates and sends a second drive signal to the second drive submodule when it determines that the vehicle is in an emergency state and receives the second feedback signal.

[0011] Optionally, the vehicle control module is further configured to generate and send a second drive signal to the second drive submodule when it determines that the vehicle is in an emergency state and receives a first feedback signal; wherein, during the period of sending the second drive signal to the second drive submodule, the sending of the first drive signal to the first drive submodule is suspended; and after the second drive signal stops being sent, the sending of the first drive signal to the first drive submodule is resumed.

[0012] Optionally, the vehicle control module is further configured to generate and send a second drive signal to the second drive submodule for a preset duration when it determines that the vehicle is in an emergency state and receives a first feedback signal; wherein, within the preset duration, the sending of the first drive signal to the first drive submodule is suspended; and after the preset duration ends, the sending of the first drive signal to the first drive submodule is resumed.

[0013] Optionally, the first drive submodule includes an input control unit, a bias unit, and a power supply unit: the input control unit is connected to the bias unit and is used to generate a control signal based on an externally input first drive signal; the bias unit is connected to the power supply unit and is used to output a first bias voltage or a second bias voltage based on the control signal; the power supply unit is connected to the signal light group via a turn signal switch and / or a synchronous trip light switch, and is used to output a first warning signal when receiving the first bias voltage and a second warning signal when receiving the second bias voltage; wherein, the first bias voltage is greater than the power supply unit's on-voltage threshold, and the second bias voltage is less than the power supply unit's on-voltage threshold; the warning drive signal includes an alternating first warning signal and a second warning signal; the signal light group illuminates when it receives the first warning signal and extinguishes when it receives the second warning signal.

[0014] Optionally, the input control unit includes a first resistor and a first switch, the bias unit includes a second switch and a third switch, and the power supply unit includes a fourth switch; the control terminal of the first switch is used to receive a first drive signal from an external input, and the control terminal of the first switch is grounded through the first resistor; the first terminal of the first switch is connected to the bias unit; the second terminal of the first switch is grounded; the control terminal of the second switch is connected to the first internal power supply terminal; the first terminal of the second switch is connected to the first internal power supply terminal; the second terminal of the second switch is connected to the control terminal of the third switch; the first terminal of the third switch is connected to the first internal power supply terminal; the second terminal of the third switch is connected to the second terminal of the first switch and the control terminal of the fourth switch respectively; the first terminal of the fourth switch is connected to the second internal power supply terminal; and the second terminal of the fourth switch is connected to the turn signal switch and the synchronous step-off light switch respectively.

[0015] Optionally, the first switch is an NPN transistor, the second switch is a PNP transistor, the third switch is an NPN transistor, and the fourth switch is an N-channel MOSFET.

[0016] This invention provides a vehicle traffic light control system. The system includes: a traffic light group consisting of at least two independently controllable traffic lights; a drive module including a first drive submodule; and a turn signal switch and a synchronous trip light switch connected in series between the first drive submodule and the traffic light group. The first drive submodule is configured to send a warning drive signal to the traffic light group via the turn signal switch and / or the synchronous trip light switch, achieving both independent control of the traffic lights and supporting simultaneous control on both sides. Compared with existing traffic light control systems, the technical solution provided by this invention simplifies the circuitry and uses a shared drive and separate control switch design, solving the problems of complex wiring and short service life caused by easy oxidation and damage of switch contacts in existing vehicle traffic light control systems. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a vehicle signal light control system provided in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of another vehicle signal light control system provided in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of another vehicle signal light control system provided in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of another vehicle signal light control system provided in an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of another vehicle signal light control system provided in an embodiment of the present invention;

[0023] Figure 6 This is a circuit diagram of a vehicle signal light control system provided in an embodiment of the present invention;

[0024] Figure 7 This is a circuit schematic diagram of a first driving submodule provided in an embodiment of the present invention. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] Figure 1 This is a schematic diagram of a vehicle signal light control system provided in an embodiment of the present invention. This embodiment can be applied to electric-assisted bicycles or other vehicles. Figure 1 As shown, the system includes a traffic light group 10, which includes at least two traffic lights that can be independently controlled. A drive module includes a first drive submodule 21. A turn signal switch 31 is connected in series between the first drive submodule 21 and the traffic light group 10, used to control the first drive submodule 21 to selectively switch on / off with at least two traffic lights. A synchronized trip light switch 32 is connected in series between the first drive submodule 21 and the traffic light group 10, used to control the first drive submodule 21 to synchronously switch on / off with at least two traffic lights. The first drive submodule 21 is used to send a warning drive signal to the traffic light group 10 via the turn signal switch 31 and / or the synchronized trip light switch 32.

[0028] The warning drive signal can be understood as the electrical signal that drives the traffic lights in the traffic light group to operate in a warning state. For example, the warning drive signal is a pulse signal or a continuous electrical signal of a specific frequency. When the warning drive signal is a pulse signal, the traffic light flashes to indicate a warning; when the warning drive signal is a continuous signal, the traffic light remains on to indicate a warning.

[0029] Specifically, the first drive submodule 21 is used to generate a warning drive signal that meets the operating requirements of the traffic lights. The turn signal switch 31 controls the connection between the first drive submodule 21 and a single-sided traffic light. The turn signal switch 31 can be electrically connected to traffic lights on both sides simultaneously, but only one side can be in a conductive state at any given time. The synchronous trip light switch 32 controls the connection between the first drive submodule 21 and the traffic lights on both sides. When the vehicle malfunctions, decelerates, or temporarily stops, requiring simultaneous warnings on both sides, the driver closes the synchronous trip light switch, simultaneously connecting the traffic lights on both sides to the first drive submodule 21, achieving synchronous warning control of the traffic lights on both sides. The traffic light group 10, upon receiving the warning drive signal from the first drive submodule 21, uses illumination or flashing to convey the vehicle's driving intention or abnormal status to surrounding vehicles or pedestrians.

[0030] For example, in one specific embodiment, when the driver operates the turn signal switch 31, such as when turning left, the turn signal switch closes the path between the left-side signal light and the first drive submodule 21. The first drive submodule 21 transmits a warning drive signal to the left-side signal light through this path, and the left-side signal light flashes to convey the intention to turn left. Similarly, when the driver operates the synchronized turn signal switch 32, the synchronized turn signal switch 32 simultaneously closes the path between the left and right-side signal lights and the first drive submodule 21. The first drive submodule 21 simultaneously transmits a warning drive signal to both signal lights, and both signal lights flash synchronously to convey vehicle warning information.

[0031] This invention provides a vehicle traffic light control system, comprising a traffic light group, a drive module, a turn signal switch, and a synchronized trip light switch. The traffic light group includes at least two independently controllable traffic lights for transmitting vehicle warning information. The drive module includes a first drive submodule. The first drive submodule is used to send a warning drive signal to the traffic light group via the turn signal switch and / or the synchronized trip light switch. The turn signal switch, connected in series between the first drive submodule and the traffic light group, controls the first drive submodule to selectively switch on and off with at least two traffic lights to achieve single-sided warning. The synchronized trip light switch, connected in series between the first drive submodule and the traffic light group, controls the first drive submodule to synchronously switch on and off with at least two traffic lights to achieve simultaneous double-sided warning. Compared with existing traffic light control systems, the technical solution provided by this invention solves the problems of complex wiring and short service life caused by easy oxidation and damage of switch contacts in existing vehicle traffic light control systems by using a shared drive and separate control switch design.

[0032] In an optional embodiment, the warning drive signal is a periodic pulse signal.

[0033] Specifically, a periodic pulse signal can be understood as an electrical signal that repeats at a fixed period. For example, if the period is 0.5 seconds, specifically, a high level for 0.25 seconds and a low level for 0.25 seconds alternate. When the signal light group 10 receives the periodic pulse signal, it will flash synchronously with the pulse period, turning on when the level is high and turning off when the level is low, in order to meet the warning requirements of the vehicle signal lights.

[0034] Figure 2 This is a schematic diagram of another vehicle signal light control system provided in an embodiment of the present invention, for reference. Figure 2 In an optional embodiment, at least two traffic lights include a left traffic light 11 and a right traffic light 12. The turn switch 31 includes: an input terminal 311 connected to the first drive submodule 21; a first output terminal 312 connected to the left traffic light 11; and a second output terminal 313 connected to the right traffic light 12. The turn switch 31 is used to switch between an off state, a left turn state, and a right turn state according to user operation.

[0035] Specifically, in the disconnected state, input terminal 311 is not connected to either the first output terminal 312 or the second output terminal 313; in the left turn state, input terminal 311 is connected to the first output terminal 312; and in the right turn state, input terminal 311 is connected to the second output terminal 313.

[0036] Specifically, when the turn switch 31 is in the off state, its input terminal 311 is not connected to either the first output terminal 312 or the second output terminal 313. The warning drive signal generated by the first drive submodule 21 cannot be transmitted to the left signal light 11 and the right signal light 12 through the turn switch 31 and the synchronous flashing light switch 32, and neither of them works. When the turn switch 31 is in the left turn state, the input terminal 311 is connected to the first output terminal 312. The warning drive signal generated by the first drive submodule 21 is transmitted to the left signal light 11 through the input terminal 311 and the first output terminal 312 of the turn switch 31. The left signal light 11 flashes after receiving the signal, while the right signal light 12 does not work because it does not receive the signal, thus indicating that the vehicle is about to turn left. When the turn switch 31 is in the right turn state, the input terminal 311 is connected to the second output terminal 313. The warning drive signal of the first drive submodule 21 is transmitted to the right signal light 12 through the input terminal 311 and the second output terminal 313 of the turn switch 31. The right signal light 12 flashes and the left signal light 11 does not work, indicating that the vehicle is about to turn right.

[0037] Figure 3 This is a schematic diagram of another vehicle signal light control system provided in an embodiment of the present invention, with reference to... Figure 3In an optional embodiment, at least two traffic lights include a left traffic light 11 and a right traffic light 12. One end of a synchronous switching switch 32 is connected to the first driving submodule 21, and the other end of the synchronous switching switch 32 is connected to the left traffic light 11 and the right traffic light 12, respectively.

[0038] The first drive submodule 21 is also used to send a warning drive signal to the corresponding traffic light through the turn switch 31 when the turn switch 31 is in the left turn state or the right turn state, and to send a warning drive signal to the left traffic light 11 and the right traffic light 12 when the synchronous trip light switch 32 is turned on.

[0039] Specifically, if the synchronous light switch 32 is turned on, the first drive submodule 21 sends a warning drive signal to the left and right signal lights through the synchronous light switch 32, and the left and right signal lights flash synchronously to achieve a double-light warning.

[0040] It should be noted that both the turn signal switch 31 and the synchronized trip light switch 32 are manually operated switches, and their circuits are independently configured. That is, the on / off state of one switch will not affect the on / off state of the other. However, when the synchronized trip light switch 32 is in the on state, the first drive submodule 21 sends a warning drive signal to the left signal light 11 and the right signal light 12 through this switch, causing both signal lights to enter a synchronized flashing double-trip warning state. At this time, even if the turn signal switch 31 is in the left or right turn position, the first drive submodule 21 will send a warning drive signal to a single signal light through the turn signal switch 31, and the display of that single signal will be overridden by the double-trip warning signal. Ultimately, the left and right signal lights will flash synchronously, only demonstrating the double-trip warning function.

[0041] The control system provided in this embodiment of the invention, based on the above embodiments, refines the path structure, state switching logic and signal transmission path of the turn signal switch and the synchronous turn signal switch, further improving the accuracy, ease of operation and reliability of the vehicle signal light control system.

[0042] Figure 4 This is a schematic diagram of another vehicle signal light control system provided in an embodiment of the present invention, with reference to... Figure 4 In an optional embodiment, the system further includes a vehicle control module 40, which is connected to the first drive submodule 21. The vehicle control module 40 is used to generate and continuously send a first drive signal to the first drive submodule 21 when it detects that the vehicle is powered on.

[0043] The first drive submodule 21 is also used to generate and send a warning drive signal to the signal light group 10 after receiving the first drive signal.

[0044] The power-on state can be understood as the vehicle's power system being connected, and all electrical devices on the vehicle being operational. For example, when the vehicle's ignition switch is in the ON or START position, all electrical components such as the vehicle control module and drive module are operational. The first drive signal can be understood as a continuous enable signal used to activate the first drive submodule 21.

[0045] Specifically, the vehicle control module 40 generates a first drive signal when it detects that the vehicle is powered on, and continuously transmits it to the first drive submodule 21. Upon receiving the first drive signal, the first drive submodule 21 generates a warning drive signal based on it. The warning drive signal is transmitted to the traffic light group 10 through corresponding paths according to the on / off states of the turn signal switch 31 and the synchronized LED indicator switch 32. When the vehicle is not powered on, the vehicle control module 40 does not generate the first drive signal, and the first drive submodule 21, not receiving this signal, cannot generate the warning drive signal. Even if the turn signal switch 31 or the synchronized LED indicator switch 32 is operated, the traffic light group 10 will not respond.

[0046] The control system provided in this embodiment of the invention adds a vehicle control module on the basis of the above embodiments, ensuring that the traffic light control system will only respond to the switch operation to realize the warning function when the vehicle is powered on, avoiding invalid energy consumption or false triggering when the vehicle is powered off, and further improving the accuracy, ease of operation and reliability of the vehicle traffic light control system.

[0047] Figure 5 This is a schematic diagram of another vehicle signal light control system provided in an embodiment of the present invention. (Continuing to refer to...) Figure 5 In an optional embodiment, the vehicle traffic light control system further includes a monitoring module 50. The monitoring module 50 is communicatively connected to the first drive submodule 21 and the vehicle control module 40. The monitoring module 50 is used to generate and send a first feedback signal indicating that the traffic light group 10 is in a driving state when the first drive submodule 21 drives the traffic light group 10 to work, and to generate and send a second feedback signal indicating that the traffic light group 10 is in a non-driving state when the first drive submodule 21 does not drive the traffic light group 10 to work.

[0048] The drive module also includes a second drive submodule 22, which is communicatively connected to the vehicle control module 40 and connected to the signal light group 10. The second drive submodule 22 is used to generate and send a warning drive signal to the signal light group 10 when it receives an externally input second drive signal.

[0049] The vehicle control module 40 is also used to monitor the vehicle's operating status in real time, determine whether the vehicle has entered an emergency state based on the vehicle's operating status, and generate and send a second drive signal to the second drive submodule 22 when it determines that the vehicle is in an emergency state and receives a second feedback signal.

[0050] The driving state can be understood as the signal light group 10 being in a working state under the drive of the first driving submodule 21, that is, the signal light group 10 receiving the warning driving signal sent by the first driving submodule 21 and responding normally. Examples include left turn signal flashing, right turn signal flashing, or synchronized turn signal flashing. The first feedback signal can be understood as a feedback signal used to inform the vehicle control module that the signal light group 10 is being driven by the first driving submodule 21. The second driving signal can be understood as a feedback signal that the signal light group 10 is not being driven by the first driving submodule 21. For example, if the first feedback signal is high and the second feedback signal is low, then when the monitoring module detects the signal light group flashing driven by the first driving submodule 21, it continuously outputs a high level to the vehicle control module; otherwise, it outputs a low level. The vehicle operating state can be understood as various data used to reflect the real-time operating status of the vehicle during vehicle operation, such as vehicle speed and braking status.

[0051] It should be noted that the signal input terminal of the monitoring module 50 is connected in series with the output terminal of the first drive submodule 21. Determining the driving state of the traffic light group 10 requires two conditions: first, the traffic light group 10 is in a working state; second, the first drive submodule 21 outputs a warning drive signal. Only when both conditions are met simultaneously will the monitoring module 50 determine that the operation of the traffic light group 10 is driven by the first drive submodule 21 and generate a first feedback signal. If only the traffic light group 10 is working but the first drive submodule 21 does not output a signal (e.g., driven by the second drive submodule 22), or if the first drive submodule 21 outputs a signal but the traffic light group 10 is not working (e.g., the turn signal switch 31 and the synchronous trip light switch 32 are open), the monitoring module 50 will not determine that the first drive submodule 21 is in a driving state. In this case, the monitoring module 50 will generate a second feedback signal.

[0052] Specifically, during operation, the monitoring module 50 monitors the working status of the first drive submodule 21 and the signal light group 10 in real time. When the first drive submodule 21 drives the signal light group 10 through the turn signal switch 31 or the synchronous turn signal switch 32, the monitoring module 50 determines that the signal light group 10 is in a driving state, generates a first feedback signal, and continuously sends it to the vehicle control module 40; when the first drive submodule 21 does not drive the signal light group, the monitoring module 50 determines that it is in a non-driving state, generates a second feedback signal, and continuously sends it to the vehicle control module 40.

[0053] Meanwhile, the vehicle control module 40 monitors the vehicle's operating status in real time, such as speed and braking status. When these parameters meet preset emergency conditions, the vehicle is determined to enter an emergency state, such as in the event of a collision or emergency braking. When the vehicle control module 40 determines that the vehicle has entered an emergency state, it also checks the currently received drive status signal. If a first feedback signal is received, it indicates that the traffic light group 10 is already in operation and no further action is required. If a second feedback signal is received, it indicates that the traffic light group 10 is not driven by the first drive submodule 21. In this case, a second drive signal is generated and sent to the second drive submodule 22 to trigger emergency drive. After receiving the second drive signal, the second drive submodule 22 generates a warning drive signal and sends it to the traffic light group 10, causing the traffic lights on both sides to flash synchronously to convey warning information to surrounding vehicles and pedestrians in an emergency.

[0054] The control system provided in this embodiment of the invention adds a monitoring module and a second drive submodule to the above embodiments, ensuring that even when the vehicle is in an emergency state and the synchronous flashing light switch cannot be adjusted in time, it can still promptly transmit warning information to surrounding vehicles and pedestrians, further improving the convenience and reliability of the vehicle signal light control system.

[0055] Continue to refer to Figure 5 In an optional embodiment, the vehicle control module 40 is further configured to generate and send a second drive signal to the second drive submodule 22 when it determines that the vehicle is in an emergency state and receives a first feedback signal;

[0056] Specifically, during the period of sending the second drive signal to the second drive submodule 22, the sending of the first drive signal to the first drive submodule 21 is paused; after the second drive signal stops being sent, the sending of the first drive signal to the first drive submodule 21 resumes.

[0057] Specifically, when the vehicle is in an emergency state and the vehicle control module 40 receives the first feedback signal from the monitoring module 50, it indicates that the signal light group 10 is being driven by the first drive submodule 21, such as when the driver is activating the left / right turn signal or turning on the synchronized flashing lights. At this time, the vehicle control module 40 sends a second drive signal to the second drive submodule 22. The second drive submodule 22 generates and sends a warning drive signal to the signal light group 10 to control the left signal light 11 and right signal light 12 in the signal light group 10 to simultaneously issue warning signals. Simultaneously, the vehicle control module 40 will pause sending the first drive signal to the first drive submodule 21 to avoid conflicts caused by the first drive submodule 21 and the second drive submodule 22 sending signals to the signal light group 10. When the vehicle's emergency state is resolved, the vehicle control module 40 stops sending the second drive signal to the second drive submodule 22, and the second drive submodule 22 subsequently stops generating the warning drive signal. Then, the vehicle control module 40 resumes sending the first drive signal to the first drive submodule 21. The first drive submodule 21 regenerates the warning drive signal. If the turn signal switch 31 or the synchronous flashing light switch 32 is still in the on state at this time, the first drive submodule 21 will continue to send the warning drive signal to the signal light group 10 through the corresponding switch to restore the original turn signal or double flashing warning function.

[0058] The control system provided in this embodiment of the invention, based on the above embodiments, refines the signal light control logic in the emergency state of the vehicle, avoids signal conflicts, and further improves the accuracy, ease of operation and reliability of the vehicle signal light control system.

[0059] Continue to refer to Figure 5 In an optional embodiment, the vehicle control module 40 is further configured to generate and send a second drive signal for a preset duration to the second drive submodule 22 when it determines that the vehicle is in an emergency state and receives a first feedback signal;

[0060] Specifically, within a preset duration, the transmission of the first drive signal to the first drive submodule 21 is paused; after the preset duration ends, the transmission of the first drive signal to the first drive submodule 21 resumes. The preset duration can be understood as the pre-set duration for which the second drive signal, built into the vehicle control module 40, is continuously transmitted; an exemplary preset duration can be 0.5 to 2 seconds.

[0061] Specifically, when the vehicle is in an emergency state and the vehicle control module 40 receives the first feedback signal from the monitoring module 50, the vehicle control module 40 generates and sends a second drive signal to the second drive submodule 22 for a preset duration. Simultaneously, within the preset duration, the vehicle control module 40 pauses sending the first drive signal to the first drive submodule 21. At this time, under the action of the second drive signal, the second drive submodule 22 drives the left and right turn signals to flash synchronously, providing priority warning for the emergency state and briefly overriding the manual signal. After the preset duration ends, the vehicle control module 40 stops sending the second drive signal, and the second drive submodule 22 stops outputting the emergency drive signal. At the same time, the vehicle control module 40 resumes sending the first drive signal to the first drive submodule 21, ensuring that the driver's intentions are not interrupted for an extended period.

[0062] The control system provided in this embodiment of the invention, based on the above embodiments, refines the signal light control logic in the vehicle emergency state, ensuring that the driver's operating intentions are not interrupted for a long time, and further improves the accuracy, ease of operation and reliability of the vehicle signal light control system.

[0063] Figure 6 This is a circuit diagram of a vehicle signal light control system provided in an embodiment of the present invention, for reference. Figure 6 In an optional embodiment, the first drive submodule 21 includes an input control unit 211, a bias unit 212, and a power supply unit 213. The input control unit 211 is connected to the bias unit 212 and is used to generate a control signal based on an externally input first drive signal. The bias unit 212 is connected to the power supply unit 213 and is used to output a first bias voltage or a second bias voltage based on the control signal. The power supply unit 213 is connected to the signal light group 10 via a turn signal switch 31 and / or a synchronous trip light switch 32. The power supply unit 213 is used to output a first warning signal when receiving the first bias voltage and a second warning signal when receiving the second bias voltage.

[0064] The conduction voltage threshold can be understood as the minimum voltage value required for the power supply unit 213 to switch from the off state to the conduction state; the first bias voltage is greater than the conduction voltage threshold of the power supply unit 213, and the second bias voltage is less than the conduction voltage threshold of the power supply unit 213; the warning drive signal includes an alternating first warning signal and a second warning signal; the indicator light group 10 lights up when it receives the first warning signal and turns off when it receives the second warning signal.

[0065] Specifically, the input control unit 211 in the first drive submodule 21 is used to receive the first drive signal from the outside, such as the enable signal sent by the vehicle control module 40, and generate a corresponding control signal based on the signal. The bias unit 212 is used to selectively output a first bias voltage or a second bias voltage based on the control signal generated by the input control unit 211, thereby controlling the on and off states of the power supply unit 213.

[0066] Power supply unit 213 is used to output warning drive signals. Power supply unit 213 is connected to signal light group 10 via turn signal switch 31 and / or synchronous trip light switch 32. When power supply unit 213 receives the first bias voltage output by bias unit 212, power supply unit 213 is turned on, outputting a first warning signal to signal light group 10 to illuminate signal light group 10; when it receives the second bias voltage, power supply unit 213 is turned off, outputting a second warning signal to extinguish signal light group 10. By alternating between the on and off states of power supply unit 213, a periodic warning drive signal containing alternating first and second warning signals is generated.

[0067] In one specific embodiment, the first bias voltage is slightly higher than the turn-on voltage threshold of the power supply unit 213, and the second bias voltage is slightly lower than the turn-on voltage threshold of the power supply unit 213. When the first drive signal received by the input control unit 211 is a periodic pulse signal, the control signal will alternately pull down or raise the voltage at the control terminal of the power supply unit 213, that is, output the first or second bias voltage. Since the difference between the first bias voltage and the second bias voltage is relatively small, a rapid switching between the on and off states is achieved.

[0068] The control system provided in this embodiment of the invention refines the circuit structure of the first drive submodule based on the above embodiments, and controls the generation of the emergency drive signal through the first drive signal, thereby ensuring the output stability and response timeliness of the first drive submodule.

[0069] In one specific embodiment, the second driving submodule 22 has the same structure as the first driving submodule 21.

[0070] Figure 7 This is a circuit schematic diagram of a first driving submodule provided in an embodiment of the present invention. (Continue referring to...) Figure 6 and Figure 7 In an optional embodiment, the input control unit 211 includes a first resistor R12 and a first switch Q21. The control terminal of the first switch Q21 is used to receive a first drive signal from an external input. The control terminal of the first switch Q21 is grounded through the first resistor R12. The first terminal of the first switch Q21 is connected to the bias unit 212. The second terminal of the first switch Q21 is grounded.

[0071] Specifically, during operation, the input control unit 211 receives a high-level first drive signal applied to the base of the first switch Q21, causing it to switch from the off state to the on state. When the first switch Q21 is on, the control electrode of the power supply unit 213 is grounded, switching from the first bias voltage to the second bias voltage. The second bias voltage is less than the control voltage of the fourth switch, therefore the fourth switch is off, and a second warning signal is output. The indicator light group 10 receives no valid drive voltage or receives a low level, and thus turns off. Conversely, when the low-level first drive signal applies to the base of the first switch Q21, causing it to switch from the on state to the off state, the first switch Q21 is off. When the first switch Q21 is off, the control electrode of the power supply unit 213 is controlled by the bias unit 212. The first bias voltage output by the bias unit 212 is greater than the control voltage of the fourth switch, therefore the fourth switch is on, and a first warning signal is output. The indicator light group 10 receives a valid drive voltage or receives a high level, and thus lights up.

[0072] The biasing unit 212 includes a second switch Q22 and a third switch Q23. The control terminal of the second switch Q22 is connected to the first internal power supply terminal; the first terminal of the second switch Q22 is connected to the first internal power supply terminal; the second terminal of the second switch Q22 is connected to the control terminal of the third switch Q23; the first terminal of the third switch Q23 is connected to the first internal power supply terminal; and the second terminal of the third switch Q23 is connected to the second terminal of the first switch Q21 and the control terminal of the fourth switch Q24, respectively.

[0073] The first internal power supply terminal is used to provide the bias voltage.

[0074] Specifically, during operation, the current output from the first internal power supply terminal of the bias unit 212 serves as the control current for the second switch Q22. When the first internal power supply terminal is normally powered, the second switch Q22 is turned on. The current output from the first internal power supply terminal, after passing through the second switch Q22, serves as the control current for the third switch Q23. When the third switch Q23 is turned on, the current output from the first internal power supply terminal serves as the control current for the fourth switch Q24, controlling the conduction of the power supply unit 213. When the input control unit 211 is turned off, the first internal power supply terminal provides a first bias voltage after voltage division by a resistor. If the first bias voltage is greater than the threshold of the power supply unit 213, the power supply unit 213 is turned on. Conversely, when the input control unit 211 is turned on, the first internal power supply terminal is grounded after voltage division by a resistor, and the voltage at the control electrode of the fourth switch Q24 is pulled low, i.e., a second bias voltage is provided. If the second bias voltage is less than the threshold of the power supply unit 213, the power supply unit 213 is turned off.

[0075] The power supply unit 213 includes a fourth switch Q24; the first end of the fourth switch Q24 is connected to the second internal power supply terminal; the second end of the fourth switch Q24 is connected to the turn switch 31 and the synchronous step light switch 32 respectively.

[0076] The second internal power supply terminal provides the operating voltage for the output of the power supply unit 213. The first and second internal power supply terminals can be the same or different. The second internal power supply terminal can be selected from conventional power supply voltages such as 12V / 24V / 48V according to the power of the signal light group 10.

[0077] Specifically, during the operation of power supply unit 213, the high-level output of the third switch Q23 serves as the control voltage, controlling the fourth switch Q24 to switch from the off state to the on state. The second internal power supply terminal outputs a first warning signal via the fourth switch Q24. If either the turn signal switch 31 or the synchronous trip light switch 32 is on, the signal is transmitted to the corresponding indicator light, illuminating the indicator light group 10. Conversely, if the fourth switch Q24 is off, it outputs a low voltage or no output, i.e., a second warning signal. The indicator light group 10 does not receive a valid driving voltage or receives a low level, and thus turns off.

[0078] The control system provided in this embodiment of the invention refines the circuit of the first drive submodule based on the above embodiments, further improving the accuracy, ease of operation and reliability of the vehicle signal light control system.

[0079] In an optional embodiment, the first switch Q21 is an NPN transistor, the second switch Q22 is a PNP transistor, the third switch Q23 is an NPN transistor, and the fourth switch Q24 is an N-channel MOSFET. (Refer to...) Figure 3 The circuit structure shown uses a push-pull circuit with the second switch Q22 and the third switch Q23. When the second switch Q22 is a PNP transistor, its base is pulled down and biased through the second resistor R26. When the third switch Q23 is an NPN transistor, its base is pulled up and biased through the third resistor R25. Furthermore, a fourth resistor R24 ​​is connected in parallel in the conduction loops of the second and third switches Q22 and Q23. When both switches are turned on simultaneously, this forms a parallel voltage divider with the fourth resistor R24, adjusting the first bias voltage and improving the circuit's response speed. A fifth resistor R23 is introduced into the ground loop of the first switch Q21 to control the second bias voltage, ensuring that the base potential of Q21 remains stable under different load conditions and effectively suppressing static power consumption. The N-channel MOSFET has low on-resistance, making it suitable for high-frequency switching scenarios. In addition, a filter structure is formed by connecting the first diode D21 and the first capacitor C2 in series in the bias circuit to filter out power supply ripple and high-frequency noise, ensuring the stability of the bias voltage. By placing a second diode D22 on the signal output path, its unidirectional conductivity is used to prevent reverse current interference, protect the front-end circuit from abnormal voltage surges, and improve system reliability.

[0080] The control system provided in this embodiment of the invention refines the circuit of the first driving submodule based on the above embodiments, and improves the response speed of the vehicle signal light control system through push-pull circuit and N-channel MOSFET.

[0081] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0082] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A vehicle signal light control system, characterized in that, include: A traffic light assembly, comprising at least two independently controllable traffic lights; The driver module includes a first driver submodule; A turn signal switch is connected in series between the first drive submodule and the signal light group, and is used to control the first drive submodule and the at least two signal lights to selectively switch on or off; A synchronous light switch is connected in series between the first drive submodule and the signal light group, and is used to control the first drive submodule and the at least two signal lights to be synchronously turned on and off. The first drive submodule is used to send a warning drive signal to the signal light group through the turn signal switch and / or the synchronous trip light switch; The first drive submodule includes an input control unit, a bias unit, and a power supply unit: The input control unit is connected to the bias unit, and the input control unit is used to generate a control signal based on the first drive signal input from the outside; The bias unit is connected to the power supply unit, and the bias unit is used to output a first bias voltage or a second bias voltage according to the control signal; The power supply unit is connected to the signal light group via the turn switch and / or the synchronous trip light switch. The power supply unit is used to output a first warning signal when it receives the first bias voltage and to output a second warning signal when it receives the second bias voltage. Wherein, the first bias voltage is greater than the power supply unit conduction voltage threshold, and the second bias voltage is less than the power supply unit conduction voltage threshold; the warning drive signal includes the first warning signal and the second warning signal that appear alternately; the signal light group lights up when it receives the first warning signal and turns off when it receives the second warning signal; The input control unit includes a first resistor and a first switch, the bias unit includes a second switch and a third switch, and the power supply unit includes a fourth switch; The control terminal of the first switch is used to receive a first drive signal from an external input, and the control terminal of the first switch is grounded through the first resistor; The first terminal of the first switch is connected to the bias unit; The second terminal of the first switch is grounded; The control terminal of the second switch is connected to the first internal power supply terminal; The first end of the second switch is connected to the first internal power supply end; The second terminal of the second switch is connected to the control terminal of the third switch; The first end of the third switch is connected to the first internal power supply end; The second terminal of the third switch is connected to the second terminal of the first switch and the control terminal of the fourth switch, respectively. The first terminal of the fourth switch is connected to the second internal power supply terminal; The second end of the fourth switch is connected to the turn signal switch and the synchronous trip light switch, respectively.

2. The vehicle signal light control system according to claim 1, characterized in that, The at least two traffic lights include a left traffic light and a right traffic light; The turn signal switch includes: The input terminal is connected to the first driver submodule; The first output terminal is connected to the left signal light; The second output terminal is connected to the right signal light; The turn signal switch is used to switch between an off state, a left turn state, and a right turn state according to user operation; Specifically, in the disconnected state, the input terminal is not connected to either the first output terminal or the second output terminal; in the left turn state, the input terminal is connected to the first output terminal; and in the right turn state, the input terminal is connected to the second output terminal. The first drive submodule is also used to send a warning drive signal to the corresponding traffic light through the turn switch when the turn switch is in the left turn or right turn state.

3. The vehicle signal light control system according to claim 1, characterized in that, The at least two traffic lights include a left traffic light and a right traffic light; One end of the synchronous light switch is connected to the first driving submodule, and the other end of the synchronous light switch is connected to the left signal light and the right signal light respectively; The first driving submodule is also used to simultaneously send warning driving signals to the left signal light and the right signal light when the synchronous step light switch is turned on.

4. The vehicle signal light control system according to claim 1, characterized in that, It also includes a vehicle control module, which is connected to the first drive submodule. The vehicle control module is used to generate and continuously send a first drive signal to the first drive submodule when it detects that the vehicle is powered on. The first driving submodule is also used to generate and send a warning driving signal to the signal light group after receiving the first driving signal.

5. The vehicle signal light control system according to claim 4, characterized in that, It also includes a monitoring module, which is communicatively connected to the first drive submodule and the vehicle control module. The monitoring module is used to generate and send a first feedback signal indicating that the signal light group is in a driving state when the first drive submodule drives the signal light group to work, and to generate and send a second feedback signal indicating that the signal light group is in a non-driving state when the first drive submodule does not drive the signal light group to work. The drive module further includes a second drive submodule, which is communicatively connected to the vehicle control module and connected to the signal light group. The second drive submodule is used to generate and send a warning drive signal to the signal light group when it receives a second drive signal input from the outside. The vehicle control module is also used to monitor the vehicle's operating status in real time, determine whether the vehicle has entered an emergency state based on the vehicle's operating status, and generate and send a second drive signal to the second drive submodule when it is determined that the vehicle is in an emergency state and the second feedback signal is received.

6. The vehicle signal light control system according to claim 5, characterized in that, The vehicle control module is also used to generate and send a second drive signal to the second drive submodule when it determines that the vehicle is in an emergency state and receives the first feedback signal. Specifically, during the period when the second drive signal is sent to the second drive submodule, the sending of the first drive signal to the first drive submodule is paused; after the second drive signal stops being sent, the sending of the first drive signal to the first drive submodule resumes.

7. The vehicle signal light control system according to claim 6, characterized in that, The vehicle control module is also used to generate and send a second drive signal for a preset duration to the second drive submodule when it determines that the vehicle is in an emergency state and receives the first feedback signal. Specifically, during the preset duration, the transmission of the first drive signal to the first drive submodule is paused; after the preset duration ends, the transmission of the first drive signal to the first drive submodule resumes.

8. The vehicle signal light control system according to claim 1, characterized in that, The first switch is an NPN transistor, the second switch is a PNP transistor, the third switch is an NPN transistor, and the fourth switch is an N-channel MOSFET.

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