A control method of a hybrid daytime running front position lamp and a vehicle
By detecting the vehicle's environment using a light sensor, the system automatically adjusts the priority of daytime running lights and front position lights, thus resolving the safety hazards caused by misoperation of hybrid daytime running lights during the day and achieving safe driving control in different environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHENGZHOU YUTONG BUS CO LTD
- Filing Date
- 2023-05-04
- Publication Date
- 2026-05-26
AI Technical Summary
Hybrid daytime running lights can turn off during the day if the driver accidentally operates the parking light switch, posing a driving safety hazard.
By detecting the vehicle's driving environment using a light sensor, the system sets the priority of daytime running lights and front position lights, and automatically adjusts the lighting mode according to environmental conditions to ensure that daytime running lights are turned on first during the day and front position lights are turned on first at night or in environments such as tunnels, thus avoiding safety hazards.
It improves vehicle driving safety in different environments and avoids safety risks caused by improper operation of daytime running lights, such as turning them off or on.
Smart Images
Figure CN116691490B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a control method and vehicle for a hybrid daytime running light, belonging to the fields of vehicle lighting and vehicle circuit control. Background Technology
[0002] Daytime running lights (DRLs), as a legally mandated lighting fixture, function to indicate the current vehicle's location and status during the day, serving a certain safety warning purpose. Furthermore, DRLs are required as standard equipment in the European Union. According to foreign research, the application of DRLs can reduce the vehicle accident rate by 12.4% and the traffic fatality rate by 26.4%. Currently, my country's standards list DRLs as an optional lighting fixture. However, considering the export potential of their models and the enhancement of overall vehicle safety and aesthetics, many automakers now include DRLs as standard equipment on many vehicles.
[0003] To be more visible during the day, daytime running lights are brighter, but their brightness can also cause glare to drivers of oncoming vehicles at night, affecting driving safety.
[0004] Daytime running lights automatically turn on when the vehicle is started, so regulations stipulate that these lights must automatically turn off when the high and low beams are turned on. In addition, due to factors such as cost and design, daytime running lights and front position lights (or parking lights) are often made into hybrid lights that share a common light source. For vehicles with hybrid light sources for daytime running lights and front position lights, when the high and low beams are turned on, this hybrid light source can only illuminate as the front position lights (when the high and low beams are turned on, all the small lights, including the front position lights, will also be illuminated).
[0005] Furthermore, vehicles equipped with daytime running lights are generally equipped with automatic headlights that automatically turn on low beams. This means that at night or when entering a tunnel, the parking lights (including side marker lights, license plate lights, and front position lights, etc.; in terms of vehicle lighting control, the parking lights and high and low beams are turned on in two separate stages) and low beams will automatically turn on, while the daytime running lights will automatically turn off, in order to improve driving safety.
[0006] When the high and low beams are not turned on, the driver manually turns on the parking lights. Regulations do not provide detailed instructions regarding the operation of daytime running lights (DRLs). Therefore, for vehicles with integrated DRLs and front position lights, in well-lit daytime conditions, if the driver accidentally turns on the parking lights (for example, turning them on to make the vehicle more visible to other vehicles when entering a tunnel, but forgetting to turn them off upon exiting), the integrated light source will illuminate in the front position light mode as controlled by the driver. Once out of the tunnel in bright light, the DRLs will be lost, potentially creating a safety hazard.
[0007] For example, Chinese invention patent document CN103557502A discloses a vehicle safety control method and device. This method achieves the dual function of position lights and daytime running lights by controlling the LED light group to reduce its brightness to the level of position lights at night or increase its brightness to the level of daytime running lights during the day; the control unit determines whether it is day or night based on the headlight signal. In this case, if the driver turns on the parking lights or both the parking lights and headlights during the day, the daytime running lights will turn off, potentially leading to a safety hazard.
[0008] The regulations define daytime running lights as lights that are turned on during daytime driving. Strictly speaking, these lights should turn on automatically during the day and should not work at night. Therefore, for hybrid daytime running lights with a shared light source that use the method of this invention, when the parking light switch is turned on, the priority of turning on the daytime running lights and the parking lights should be adjusted according to the current driving environment of the vehicle. Summary of the Invention
[0009] The purpose of this invention is to provide a control method and vehicle for hybrid daytime running lights, in order to solve the safety hazard caused by the driver turning on the parking lights during the day, which causes the daytime running lights to turn off.
[0010] To achieve the above objectives, the present invention provides a control method for a hybrid daytime running light as follows:
[0011] The system determines the current driving environment of the vehicle. When the driving environment is determined to be daytime, the daytime running light mode is set to have a higher priority than the front position light mode. When a command to turn on the parking lights is received, the hybrid daytime running light and front position light modes are turned on according to the highest priority mode, based on the priority of the daytime running light mode and the front position light mode.
[0012] This invention detects the vehicle's driving environment and sets the priority of the hybrid daytime running lights. When the vehicle is driving during the day, if a command to turn on the parking lights is received, the hybrid daytime running lights can be switched to the highest priority mode according to the priority, thus avoiding the driving safety hazards caused by the daytime running lights being turned off during the day.
[0013] Furthermore, when the vehicle's driving environment is determined to be nighttime, in a tunnel, or in rainy weather, the front position light mode is set to have a higher priority than the daytime running light mode.
[0014] This invention detects the vehicle's driving environment and sets the priority of the hybrid daytime running lights. When the vehicle is driving at night, in a tunnel, or in rainy weather, if a command to turn on the parking lights is received, the hybrid daytime running lights can be switched to the highest priority mode according to the priority, thus avoiding driving safety hazards caused by the daytime running lights being turned on at night, in tunnels, or in rainy weather.
[0015] Furthermore, a light sensor is used to detect the ambient light intensity value; when the ambient light intensity value is greater than a preset threshold, the vehicle driving environment is judged as daytime; when the ambient light intensity value is less than the preset threshold, the vehicle driving environment is judged as nighttime, a tunnel, or rainy weather.
[0016] This invention compares the ambient light brightness value collected by a light sensor with a preset brightness threshold, which can directly and accurately determine the vehicle's driving environment.
[0017] Furthermore, the light sensor includes a forward light sensor and an upward light sensor. When the forward light intensity is greater than 1500 lumens and the upward light intensity is greater than 3000 lumens, or when the forward light intensity is greater than 3000 lumens, the vehicle driving environment is determined to be daytime. When the forward light intensity is less than or equal to 1000 lumens and the upward light intensity is less than or equal to 2000 lumens, the vehicle driving environment is determined to be nighttime, a tunnel, or rainy weather.
[0018] This invention divides the light intensity collected by the light sensor into forward light intensity and upward light intensity, and sets specific brightness thresholds for judging the vehicle driving environment based on forward light intensity and upward light intensity, thereby improving the reliability of the vehicle driving environment detection results.
[0019] The control method for a hybrid daytime running light according to the present invention is as follows:
[0020] The system determines the vehicle's current driving environment. When the driving environment is determined to be nighttime, in a tunnel, or in rainy weather, the front position light mode is set to have a higher priority than the daytime running light mode. When a command to turn on the parking lights is received, the hybrid daytime running light and front position light modes are illuminated according to the highest priority mode, based on the priority of the daytime running light mode and the front position light mode.
[0021] This invention detects the vehicle's driving environment and sets the priority of the hybrid daytime running lights. When the vehicle is driving at night, in a tunnel, or in rainy weather, if a command to turn on the parking lights is received, the hybrid daytime running lights can be switched to the highest priority mode according to the priority, thus avoiding driving safety hazards caused by the daytime running lights being turned on at night, in tunnels, or in rainy weather.
[0022] Furthermore, when the vehicle's driving environment is determined to be daytime, the daytime running light mode is set to have a higher priority than the front position light mode.
[0023] This invention detects the vehicle's driving environment and sets the priority of the hybrid daytime running lights. When the vehicle is driving during the day, if a command to turn on the parking lights is received, the hybrid daytime running lights can be switched to the highest priority mode according to the priority, thus avoiding the driving safety hazards caused by the daytime running lights being turned off during the day.
[0024] Furthermore, a light sensor is used to detect the ambient light intensity value; when the ambient light intensity value is greater than a preset threshold, the vehicle driving environment is judged as daytime; when the ambient light intensity value is less than the preset threshold, the vehicle driving environment is judged as nighttime, a tunnel, or rainy weather.
[0025] This invention compares the ambient light brightness value collected by a light sensor with a preset brightness threshold, which can directly and accurately determine the vehicle's driving environment.
[0026] Furthermore, the light sensor includes a forward light sensor and an upward light sensor. When the forward light intensity is greater than 1500 lumens and the upward light intensity is greater than 3000 lumens, or when the forward light intensity is greater than 3000 lumens, the vehicle driving environment is determined to be daytime. When the forward light intensity is less than or equal to 1000 lumens and the upward light intensity is less than or equal to 2000 lumens, the vehicle driving environment is determined to be nighttime, a tunnel, or rainy weather.
[0027] This invention divides the light intensity collected by the light sensor into forward light intensity and upward light intensity, and sets specific brightness thresholds for judging the vehicle driving environment based on forward light intensity and upward light intensity, thereby improving the reliability of the vehicle driving environment detection results.
[0028] The present invention provides a hybrid daytime running light vehicle, comprising one or more controllers, the controllers executing instructions to implement the hybrid daytime running light control method as described in any of the preceding claims. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the vehicle control principle in an embodiment of the method of the present invention;
[0030] Figure 2 This is an example diagram of a hybrid daytime running headlight in a method embodiment of the present invention. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0032] Example of a control method for hybrid daytime running lights:
[0033] In this embodiment, the parking lights include front position lights, rear position lights, license plate lights, side marker lights, and side marker lights. The front position lights are used to indicate the presence and width of the vehicle when viewed from the front. The parking light switch is a device that controls the parking lights to turn on and off. The headlights include high beams and low beams. The automatic headlight switch is a switch that controls the low beams to turn on automatically.
[0034] Hybrid daytime running lights are luminaires that share a common light source, with all or part of the visible surface of the lamp body. They can also be combined with other luminaires. Daytime running lights, also known as daytime running lights, automatically turn on when the vehicle starts, while parking lights need to be manually turned on. During the day, daytime running lights indicate the current position and status of the vehicle, making it more visible and providing a certain safety warning. At night, however, daytime running lights can cause glare to oncoming drivers, affecting driving safety. Therefore, daytime running lights should automatically turn off at night or when entering tunnels.
[0035] Example 1:
[0036] Example of a control method for hybrid daytime running lights when the environment is daytime:
[0037] This embodiment provides a control method for hybrid daytime running lights, such as... Figure 1 As shown, the control method includes a light sensor communicating via a LIN module, a vehicle controller communicating via a CAN module, a lighting controller, parking lights and automatic headlight switches, and a hybrid daytime running lights. The light sensor is connected to the vehicle controller and sends commands to it to turn the parking lights and low beam headlights on or off under different driving conditions. The parking light switch is connected to the vehicle controller. The vehicle controller is connected to the lighting controller. The lighting controller receives messages from the vehicle controller to control the daytime running lights and headlights to turn on or off. The lighting controller is connected to the hybrid daytime running lights and directly controls the switching between daytime running lights and headlight modes.
[0038] The vehicle's ambient light is determined by the vehicle's light sensor. Referring to the requirements of Appendix H of GB4785-2019, it can be set that when the ambient light in front of and / or above the vehicle is in the range of E≥1500lx, the vehicle's driving environment is determined to be daytime.
[0039] When the vehicle is powered on and started, the vehicle controller sends a message (RunningLightCommand=0x01) to the lighting controller to automatically turn on the daytime running lights. At this time:
[0040] When the light sensor detects that the ambient light is greater than 1500 Lux and the overhead light is greater than 3000 Lux, or if the ambient light is greater than 3000 Lux, it determines that the environment is daytime and sets the priority of the hybrid daytime running lights to daytime running lights higher than the headlights. The light sensor sends a command to the vehicle controller to turn off the parking lights and low beams (RLS_RQ_LowBeam=0 / RLS_RQ_PositionLamp=0) to complete the automatic lighting control. At this time, if the parking light switch is manually turned on, the vehicle controller receives the parking light turn-on command. According to the priority of the daytime running lights and headlights in the hybrid daytime running lights, the vehicle controller sends a daytime running light turn-on message (RunningLightCommand=0x01) and a headlight turn-off message (ImplementClearanceLightCommand=0x00) to the lighting controller, and the lighting controller drives the daytime running lights to illuminate.
[0041] Example 2:
[0042] This embodiment provides a control method for hybrid daytime running lights, such as... Figure 1 As shown, the control method includes a light sensor communicating via a LIN module, a vehicle controller communicating via a CAN module, a lighting controller, parking lights and automatic headlight switches, and a hybrid daytime running lights. The light sensor is connected to the vehicle controller and sends commands to it to turn the parking lights and low beam headlights on or off under different driving conditions. The parking light switch is connected to the vehicle controller. The vehicle controller is connected to the lighting controller. The lighting controller receives messages from the vehicle controller to control the daytime running lights and headlights to turn on or off. The lighting controller is connected to the hybrid daytime running lights and directly controls the switching between daytime running lights and headlight modes.
[0043] The vehicle's ambient light is determined by the vehicle's light sensor. Referring to the requirements of Appendix H of GB4785-2019, it can be set that when the brightness of the ambient light in front of and / or above is in the range of 1000lx≤E≤4000lx, the current driving environment is determined to be nighttime, a tunnel, or rainy weather.
[0044] When the vehicle is powered on and started, the vehicle controller sends a message (RunningLightCommand=0x01) to the lighting controller to automatically turn on the daytime running lights. At this time:
[0045] The light sensor detects that the current ambient light is ≤1000 Lux and the overhead light is ≤2000 Lux, determining that the environment is nighttime, a tunnel, or rainy weather. It then sets the priority of the hybrid daytime running lights to the front position lights, prioritizing them over the daytime running lights. The light sensor sends parking light and low beam turn-on commands (RLS_RQ_LowBeam=1 / RLS_RQ_PositionLamp=1) to the vehicle controller, completing automatic lighting control. If the parking light switch is manually turned on, the vehicle controller receives the parking light turn-on command. Based on the set priority of the hybrid daytime running lights and front position lights, the vehicle controller sends a daytime running light off message (RunningLightCommand=0x00) and a front position light on message (ImplementClearanceLightCommand=0x01) to the lighting controller, which then activates the front position lights.
[0046] like Figure 2 The diagram shown is an example of a hybrid daytime running light and front position light. Both the daytime running light and the front position light are mounted on PCB board 1 and share the same LED light source 2 and light guide 3. The brightness of the LED is adjusted by the circuit to realize the functions of daytime running light and front position light modes respectively.
[0047] The above-mentioned control method for hybrid daytime running lights can accurately detect the current driving environment of the vehicle. By setting the priority of hybrid daytime running lights during the day, night, tunnels, or rainy weather, the daytime running light and front position light modes can be switched reasonably, effectively improving the driving safety of the vehicle in different environments.
[0048] Example of a vehicle with hybrid daytime running lights:
[0049] This embodiment provides a hybrid daytime running light vehicle, including a light sensor, a vehicle controller, a lighting controller, parking lights and an automatic light switch, and hybrid daytime running light units. The light sensor is used to determine the vehicle's driving environment, and the vehicle controller receives instructions from the light sensor and the parking light switch, and sends instructions to the lighting controller to implement a control method for the hybrid daytime running light units. Since this control method for hybrid daytime running light units has been described in detail in the above embodiment, it will not be repeated here.
Claims
1. A control method for a hybrid daytime running light, characterized in that, The system determines the current driving environment of the vehicle. When the driving environment is determined to be daytime, the daytime running light mode is set to have a higher priority than the front position light mode. At this time, if the front position light switch is manually turned on, the vehicle controller receives the front position light turn-on command. Based on the setting that the daytime running light mode has a higher priority than the front position light mode, the hybrid daytime running light and front position light are turned on according to the highest priority mode, driving the daytime running light to turn on and the front position light to turn off. The front position light and daytime running light share the same light source.
2. The control method for the hybrid daytime running headlights according to claim 1, characterized in that, When the vehicle is driven in conditions such as nighttime, tunnels, or rainy weather, the front position light mode should be set to take priority over the daytime running light mode.
3. The control method for the hybrid daytime running headlights according to claim 1 or 2, characterized in that, A light sensor is used to detect the ambient light level. When the ambient light level is greater than a preset threshold, the vehicle driving environment is judged as daytime. When the ambient light level is less than the preset threshold, the vehicle driving environment is judged as nighttime, a tunnel, or rainy weather.
4. The control method for the hybrid daytime running headlights according to claim 3, characterized in that, The light sensor includes a forward light sensor and an upward light sensor. When the forward light intensity is greater than 1500 lumens and the upward light intensity is greater than 3000 lumens, or when the forward light intensity is greater than 3000 lumens, the vehicle driving environment is judged as daytime. When the forward light intensity is less than or equal to 1000 lumens and the upward light intensity is less than or equal to 2000 lumens, the vehicle driving environment is judged as nighttime, a tunnel, or rainy weather.
5. A control method for a hybrid daytime running light, characterized in that, The system determines the vehicle's current driving environment. When the driving environment is determined to be nighttime, in a tunnel, or in rainy weather, the front position light mode is set to have a higher priority than the daytime running light mode. At this time, if the front position light switch is manually turned on, the vehicle controller receives the front position light turn-on command. Based on the setting that the front position light mode has a higher priority than the daytime running light mode, the hybrid daytime running light and front position light are turned on according to the highest priority mode, driving the daytime running light to turn off and the front position light to turn on. The front position light and daytime running light share the same light source.
6. The control method for the hybrid daytime running headlights according to claim 5, characterized in that, When the vehicle is judged to be driving in daytime, the daytime running light mode is set to have higher priority than the front position light mode.
7. The control method for the hybrid daytime running headlights according to claim 5 or 6, characterized in that, A light sensor is used to detect the ambient light level. When the ambient light level is greater than a preset threshold, the vehicle driving environment is judged as daytime. When the ambient light level is less than the preset threshold, the vehicle driving environment is judged as nighttime, a tunnel, or rainy weather.
8. The control method for the hybrid daytime running headlights according to claim 7, characterized in that, The light sensor includes a forward light sensor and an upward light sensor. When the forward light intensity is greater than 1500 lumens and the upward light intensity is greater than 3000 lumens, or when the forward light intensity is greater than 3000 lumens, the vehicle driving environment is judged as daytime. When the forward light intensity is less than or equal to 1000 lumens and the upward light intensity is less than or equal to 2000 lumens, the vehicle driving environment is judged as nighttime, a tunnel, or rainy weather.
9. A hybrid daytime running light vehicle, characterized in that, The system includes one or more controllers that execute instructions to implement a control method for hybrid daytime running lights. The control method includes: determining the vehicle's current driving environment; when the driving environment is determined to be daytime, setting the daytime running light mode to have a higher priority than the front position light mode; at this time, if the front position light switch is manually turned on, the vehicle controller receives a front position light activation command and, based on the set priority of the daytime running light mode, illuminates the hybrid daytime running lights according to the highest priority mode, driving the daytime running lights to illuminate while the front position lights are turned off; the front position lights and daytime running lights share a common light source.
10. The hybrid daytime running light vehicle according to claim 9, characterized in that, When the vehicle is driven in conditions such as nighttime, tunnels, or rainy weather, the front position light mode should be set to take priority over the daytime running light mode.
11. The hybrid daytime running light vehicle according to claim 9 or 10, characterized in that, A light sensor is used to detect the ambient light level. When the ambient light level is greater than a preset threshold, the vehicle driving environment is judged as daytime. When the ambient light level is less than the preset threshold, the vehicle driving environment is judged as nighttime, a tunnel, or rainy weather.
12. The vehicle with a hybrid daytime running light according to claim 11, characterized in that, The light sensor includes a forward light sensor and an upward light sensor. When the forward light intensity is greater than 1500 lumens and the upward light intensity is greater than 3000 lumens, or when the forward light intensity is greater than 3000 lumens, the vehicle driving environment is judged as daytime. When the forward light intensity is less than or equal to 1000 lumens and the upward light intensity is less than or equal to 2000 lumens, the vehicle driving environment is judged as nighttime, a tunnel, or rainy weather.
13. A vehicle with a hybrid daytime running light system, characterized in that, The system includes one or more controllers that execute instructions to implement a control method for hybrid daytime running lights. This method includes: determining the vehicle's current driving environment; if the driving environment is determined to be nighttime, a tunnel, or rainy weather, setting the daytime running light mode to have a higher priority than the daytime running light mode; if the daytime running light switch is manually turned on, the vehicle controller receives the command to turn on the daytime running lights, and based on the set priority of the daytime running light mode, illuminates the hybrid daytime running lights according to the highest priority mode, driving the daytime running lights to turn off and the daytime running lights to turn on; the daytime running lights and daytime running lights share a common light source.
14. The vehicle with a hybrid daytime running light according to claim 13, characterized in that, When the vehicle is judged to be driving in daytime, the daytime running light mode is set to have higher priority than the front position light mode.
15. The hybrid daytime running light vehicle according to claim 13 or 14, characterized in that, A light sensor is used to detect the ambient light level. When the ambient light level is greater than a preset threshold, the vehicle driving environment is judged as daytime. When the ambient light level is less than the preset threshold, the vehicle driving environment is judged as nighttime, a tunnel, or rainy weather.
16. The vehicle with a hybrid daytime running light according to claim 15, characterized in that, The light sensor includes a forward light sensor and an upward light sensor. When the forward light intensity is greater than 1500 lumens and the upward light intensity is greater than 3000 lumens, or when the forward light intensity is greater than 3000 lumens, the vehicle driving environment is judged as daytime. When the forward light intensity is less than or equal to 1000 lumens and the upward light intensity is less than or equal to 2000 lumens, the vehicle driving environment is judged as nighttime, a tunnel, or rainy weather.