Vehicle high beam and low beam control method

Abstract

The invention relates to a vehicle high beam and low beam control method, which comprises a signal acquisition unit, a control unit and a light execution unit, the signal acquisition unit comprises a vehicle speed sensor, a brake sensor and an accelerator sensor, and the control unit has an automatic high beam and low beam switching mode. The method comprises the following steps: S1, an acquisition step: acquiring a vehicle speed signal of a vehicle in real time by a vehicle speed sensor; the brake sensor obtains a brake signal of the vehicle; the accelerator sensor acquires an accelerator signal of the vehicle; s2, a judgment step: a control unit in the automatic high beam and low beam switching mode judges the driving state of the vehicle based on one or more received signals of a vehicle speed signal, a brake signal and an accelerator signal, and sends a control instruction for automatic switching of the high beam and the low beam of the vehicle according to a preset rule; and S3, a switching step: executing a corresponding vehicle high-beam and low-beam switching action through a light execution unit. An automatic high beam and low beam switching mode is achieved, automatic switching of high beam and low beam can be achieved, and the problem that a high beam is improperly used is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive lighting control, and particularly to a method for controlling the high and low beam lights of a vehicle. Background Art

[0002] During the night driving of a vehicle, the reasonable use of high beam lights is crucial. However, there are many problems in the current use of high beam lights in vehicles. On the one hand, after many drivers turn on the high beam lights, due to various reasons, such as bad driving habits of not observing traffic rules or forgetting, inattentiveness, etc., they often forget to manually turn off the high beam lights when needed. This causes the high beam lights to continuously shine without control, bringing great troubles and potential safety hazards to the oncoming drivers. The strong light of the high beam lights will directly shine into the eyes of the oncoming drivers, producing a strong glare effect, resulting in the oncoming drivers being unable to normally identify the road safety situation under backlight, thus increasing the accident risks in scenarios such as oncoming vehicle meeting, intersection crossing, and road pedestrians. On the other hand, although some automatic high and low beam switching control technologies have been proposed, most of them have problems such as complex facilities, high requirements for front-loading configuration, and high costs, which limit their promotion and use in the market. The problem of high beam light abuse still seriously threatens the safety of night driving. Summary of the Invention

[0003] Object of the present invention: In order to overcome the defects of the prior art, the present invention provides a method for controlling the high and low beam lights of a vehicle, which has an automatic high and low beam switching mode, can realize the automatic switching of high and low beams, and effectively avoid the problem of improper use of high beam lights.

[0004] Technical solution of the present invention: A method for controlling the high and low beam lights of a vehicle, comprising a signal acquisition unit, a control unit, and a lighting execution unit. The signal acquisition unit includes a vehicle speed sensor, a brake sensor, and an accelerator sensor. The control unit has an automatic high and low beam switching mode, and has the following steps: S1. Acquisition step: The vehicle speed signal of the vehicle is obtained in real time through the vehicle speed sensor; the brake signal of the vehicle is obtained through the brake sensor; the accelerator signal of the vehicle is obtained through the accelerator sensor; S2. Judgment step: Based on one or more of the received vehicle speed signal, brake signal, and accelerator signal, the control unit in the automatic high and low beam switching mode judges the driving state of the vehicle, and issues a control instruction for automatically switching the high and low beam lights of the vehicle according to the preset rules; S3. Switching step: The lighting execution unit receives the control instruction issued by the control unit and executes the corresponding vehicle high and low beam switching action.

[0005] By adopting the above technical solution, the existing hardware facilities of the current vehicle are utilized, including the signal acquisition unit, the control unit, and the lighting execution unit, to achieve the automatic switching between high beam and low beam, which can effectively avoid the improper use of high beam caused by the driver's improper manual operation or misjudgment, thereby reducing the risk of traffic accidents.

[0006] The technical solution of the present invention is easy to integrate with the existing common vehicle systems, which not only reduces the cost, but also improves the applicability and market competitiveness of the technology.

[0007] A further setting of the present invention: The preset rules include: a. When it is determined that the vehicle has the high beam switch turned on, and at the same time, it meets the conditions of being in the throttle boost signal, and when the vehicle speed exceeds V2 and the duration exceeds T2, the control unit controls the lighting execution unit to switch the low beam to the high beam; b. When it is determined that the vehicle speed is lower than V1 and the duration exceeds T1, the control unit controls the lighting execution unit to switch the high beam to the low beam; c. When it is determined that the vehicle is braking, the control unit controls the lighting execution unit to switch the high beam to the low beam; d. When it is determined that the vehicle is in the throttle release signal, and at the same time, it meets the conditions of the vehicle speed being lower than V3 and the duration exceeding T3, the control unit controls the lighting execution unit to switch the high beam to the low beam.

[0008] After adopting the above further setting, not only the driving safety is significantly improved, but also the driving experience is further optimized: 1. The intelligent recognition of the brake signal and the automatic switching between high beam and low beam effectively avoid the visual interference caused by the high beam during oncoming vehicle meetings and intersections, significantly reduce the non-compliant high beam usage duration, and improve the overall safety of road users.

[0009] 2. Through the intelligent recognition of the throttle release and speed decreasing signals, the system can automatically switch the high beam to the low beam, which is particularly important when the vehicle is decelerating or about to stop, reducing the interference to other road users and enhancing the civility of driving.

[0010] 3. When driving at a low speed for a long time, the system automatically switches to the low beam. This user-friendly design not only meets the requirements of traffic regulations, but also reduces the interference to other vehicles and improves the comfort of night driving.

[0011] In summary, the vehicle high beam and low beam control method of the present invention realizes the intelligent switching between high beam and low beam through refined preset rules, not only improves the driving safety, but also reflects the respect for traffic rules and the care for other road users.

[0012] Further setting of the present invention: When it is determined that the vehicle is in the parked state, the lighting execution unit is controlled by the control unit to maintain the high beam duration T1, and switch to the low beam after the high beam duration exceeds T1.

[0013] With the above further setting, this setting not only takes into account the lighting requirements during driving, but also takes into account the lighting usage habits in the parked state. In the parked state, if the light around the vehicle is dim, the high beam can provide sufficient lighting range to facilitate the driver to observe the surrounding environment. However, keeping the high beam on for a long time may cause discomfort or interference to surrounding pedestrians or other vehicles. Therefore, by setting the high beam duration T1, when the parking time exceeds this threshold, the control unit will automatically switch the high beam to the low beam, thereby reducing the impact on the surrounding environment while ensuring the lighting requirements. This user-friendly design further improves the practicality and user experience of the present invention.

[0014] Further setting of the present invention: V1 is between 0 - 15 km / h, V2 is between 50 - 80 km / h, V3 is less than or equal to V2 - 5 km / h and greater than or equal to V1 + 10 km / h.

[0015] Further setting of the present invention: Adjust the preset rules in different scenarios of urban roads, rural roads and highways. Among them, on urban roads, V1 is set to 5 km / h, V2 is set to 60 km / h, and V3 is set to 55 km / h. On rural roads, V1 is set to 10 km / h, V2 is set to 50 km / h, and V3 is set to 40 km / h. On highways, V1 is set to 15 km / h, V2 is set to 80 km / h, and V3 is set to 65 km / h.

[0016] With the above further settings, this setting fully takes into account the driving characteristics and driver needs in different road scenarios. On urban roads, the vehicle driving speed is relatively slow and the traffic conditions are complex. Therefore, V1 is set to 5 km / h, V2 is set to 60 km / h, and V3 is set to 55 km / h to ensure that when driving at low speeds and in traffic jams, the vehicle can promptly switch to the low beam to reduce interference to other vehicles and pedestrians. On rural roads, since there are relatively few vehicles, V1 is set to 10 km / h, V2 is set to 50 km / h, and V3 is set to 40 km / h to adapt to the driving characteristics of rural roads. On highways, the vehicle driving speed is fast and better lighting effects are needed to ensure driving safety. Therefore, V1 is set to 15 km / h, V2 is set to 80 km / h, and V3 is set to 65 km / h to ensure that when driving at high speeds, the vehicle can maintain high beam lighting to provide sufficient field of vision. Such a setting not only improves driving safety and comfort, but also makes the intelligent control method of the present invention more flexible and practical, and is easily accepted and recognized by the majority of drivers.

[0017] The further setting of the present invention: T1 is set to 15 min, T2 is set to 20 s, and T3 is set to 10 s.

[0018] The further setting of the present invention: when switching between high and low beams, the lighting execution unit also controls the light to flash for T seconds, and the light flashing states in different switching states can be set differently.

[0019] With the above further setting, this setting not only increases the visibility of the light switch, reminds surrounding vehicles and pedestrians to pay attention, but also improves driving safety. The specific value of T seconds can be adjusted according to actual needs to ensure that it can effectively attract attention without causing visual interference. At the same time, different light flashing states can be used to distinguish different switching states, so that drivers and surrounding traffic participants can more intuitively understand the current state of the vehicle lights, further enhancing the safety of road driving.

[0020] The further setting of the present invention: T is set to 1 s.

[0021] The further setting of the present invention: the control unit simultaneously has a manual low beam mode, a manual high beam mode, and an automatic high and low beam switching mode, where the manual low beam mode is triggered by manually operating the low beam switch, the automatic high and low beam switching mode is triggered by manually operating the high beam switch once, and the manual high beam mode is triggered by manually operating the high beam switch twice.

[0022] With the above further setting, having a manual low beam mode, a manual high beam mode, and an automatic high and low beam switching mode simultaneously, this innovative design enables drivers to flexibly select the light mode according to road and traffic conditions.

[0023] Among them, the manual low beam mode is triggered by manually operating the low beam switch and is applicable to situations at night or when the light is dim but there are vehicles or pedestrians ahead, in order to reduce the dazzling effect on oncoming vehicles. The automatic high / low beam switching mode is triggered by manually operating the high beam switch once. In this state, the lighting system will automatically switch between high and low beams according to the light ahead and the vehicle situation, without the driver having to frequently operate manually, which not only improves driving safety but also reduces the driver's driving burden. If in some special situations, the driver needs to manually turn on the high beam, it can be triggered by continuously manually operating the high beam switch twice. The headlight in this state will always remain in the high beam mode until the driver manually switches again.

[0024] For the consideration of safe driving, the present invention defaults that one trigger of the high beam switch activates the automatic high / low beam switching mode, so as to prevent the driver from staying in the high beam state for a long time due to misoperation in an emergency situation, which may affect the line of sight of oncoming vehicles. It not only realizes the diversified control of vehicle lights, but also fully considers the requirements of driving safety and convenience, providing a more intelligent and user-friendly driving experience for the driver.

[0025] A further setting of the present invention: when the vehicle speed in the manual high beam mode is lower than V1, the control unit controls the switch to the automatic high / low beam switching mode.

[0026] With the above further setting, this setting aims to improve driving safety, especially when driving at low speeds, such as in urban congested sections or rural roads at night. The driver may not switch back to the automatic high / low beam switching mode in time due to negligence, resulting in the high beam causing unnecessary dazzling to surrounding vehicles and pedestrians. When the vehicle speed is lower than the preset value of V1, the control unit will intelligently judge the current ambient light and road conditions and automatically switch the lights to a more appropriate high / low beam switching mode, thereby effectively avoiding light interference and improving driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a flowchart of a specific embodiment of the present invention; Figure 2 is a schematic diagram of high / low beam switching of a specific embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in this embodiment will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Such as Figure 1 、2 As shown in 2 , a method for controlling the high and low beam lights of a vehicle according to the present invention includes a signal acquisition unit, a control unit, and a lighting execution unit. The signal acquisition unit includes a vehicle speed sensor, a brake sensor, and an accelerator sensor. The control unit has an automatic high and low beam switching mode. It has the following steps: S1. Acquisition step: The vehicle speed signal of the vehicle is obtained in real time through the vehicle speed sensor; the brake signal of the vehicle is obtained through the brake sensor; the accelerator signal of the vehicle is obtained through the accelerator sensor. S2. Judgment step: Based on one or more of the received vehicle speed signal, brake signal, and accelerator signal, the control unit in the automatic high and low beam switching mode judges the driving state of the vehicle, and issues a control instruction for automatically switching the high and low beam lights of the vehicle according to a preset rule. S3. Switching step: The lighting execution unit receives the control instruction issued by the control unit and executes the corresponding switching action of the high and low beam lights of the vehicle.

[0030] The preset rules include: a. When it is judged that the vehicle has the high beam switch on, and at the same time satisfies being in the accelerator boost signal, and when the vehicle speed exceeds V2 and the duration exceeds T2, the control unit controls the lighting execution unit to switch the low beam to the high beam. b. When it is judged that the vehicle speed is lower than V1 and the duration exceeds T1, the control unit controls the lighting execution unit to switch the high beam to the low beam. c. When it is judged that the vehicle is braking, the control unit controls the lighting execution unit to switch the high beam to the low beam. d. When it is judged that the vehicle is in the accelerator release signal, and at the same time satisfies that the vehicle speed is lower than V3 and the duration exceeds T3, the control unit controls the lighting execution unit to switch the high beam to the low beam.

[0031] When it is judged that the vehicle is parked, the control unit controls the lighting execution unit to maintain the high beam for a duration of T1, and switch to the low beam after the high beam duration exceeds T1.

[0032] Specifically, T1 is set to 15 min, T2 is set to 20 s, and T3 is set to 10 s. V1 is in the range of 0 - 15 km / h, V2 is in the range of 50 - 80 km / h, V3 is less than or equal to V2 - 5 km / h and greater than or equal to V1 + 10 km / h. The preset rules are adjusted in different scenarios of urban roads, rural roads, and highways. Among them, on urban roads, V1 is set to 5 km / h, V2 is set to 60 km / h, and V3 is set to 55 km / h. On rural roads, V1 is set to 10 km / h, V2 is set to 50 km / h, and V3 is set to 40 km / h. Under the highway, V1 is set to 15 km / h, V2 is set to 80 km / h, and V3 is set to 65 km / h.

[0033] Specifically, when switching between high beam and low beam, the lighting execution unit also controls the lights to flash for T seconds, and the lighting flash states in different switching states can be set differently. T is set to 1 s. For example, b. When it is judged that the vehicle speed is lower than V1 and the duration exceeds T1, the control unit controls the lighting execution unit to switch the high beam to the low beam. At this time, the lighting flash state 0 can be set to T = 1 s, Df = 50%, 50%, 50%; c. When it is judged that the vehicle is braking, the control unit controls the lighting execution unit to switch the high beam to the low beam. At this time, the lighting flash state 1 can be set to T = 1 s, Df = 70%, 40%, 10%; d. When it is judged that the vehicle is in the throttle release signal, and at the same time the vehicle speed is lower than V3 and the duration exceeds T3, the control unit controls the lighting execution unit to switch the high beam to the low beam. At this time, the lighting flash state 2 can be set to T = 1 s, Df = 50%, 20%, 10%.

[0034] In the vehicle lighting control scenario, a specific explanation is made for T = 1 s, Df = 50%, 50%, 50%. T = 1 s: It means that the cycle of the lighting flash is 1 second, that is, from the start of one flash to the start of the next same flash, the entire process takes 1 second; Df = 50%, 20%, 10%: Df refers to the duty cycle, which represents the proportion of the lighting on time in the total cycle time within one cycle. The three values here mean three different flashing situations. The first flash: The duty cycle is 50%, that is, within a 1-second cycle, the lighting is on for 0.5 seconds and off for 0.5 seconds. The second flash: The duty cycle is 20%, that is, within a 1-second cycle, the lighting is on for 0.2 seconds and off for 0.8 seconds. The third flash: The duty cycle is 10%, which means that the lighting is only on for 0.1 seconds and off for 0.9 seconds within 1 second. And "Df = 50%, 20%, 10%" may be the alternating flashing of high beam and low beam. Taking three flashes as an example, the first high beam (or low beam) is on for 0.5 seconds and off for 0.5 seconds, the second low beam (or high beam) is on for 0.2 seconds and off for 0.8 seconds, and the third high beam (or low beam) is on for 0.1 seconds and off for 0.9 seconds, and it keeps cycling. It may also be used to control the flashing of the same type of lighting (high beam or low beam) to represent specific meanings. This different combination of flashing methods can form a unique lighting reminder mode, attracting the driver's attention through different flashing characteristics and conveying corresponding meanings.

[0035] Specifically, the control unit has a manual low beam mode, a manual high beam mode, and an automatic high / low beam switching mode at the same time. Among them, the manual low beam mode is triggered by manually operating the low beam switch, the automatic high / low beam switching mode is triggered by manually operating the high beam switch once, and the manual high beam mode is triggered by manually operating the high beam switch twice. And when the vehicle speed in the manual high beam mode is lower than V1, the control unit controls the switch to the automatic high / low beam switching mode.

[0036] When the vehicle is turned off, the high and low beams are directly controlled by the switch. Generally, the vehicle will turn off the headlights within half an hour for energy-saving considerations.

[0037] The present invention utilizes the existing hardware facilities of the current vehicle, including a signal acquisition unit, a control unit, and a lighting execution unit, to realize the automatic switching of high and low beams, which can effectively avoid the problem of improper use of lights caused by improper manual operation or misjudgment of the driver, thereby reducing the risk of traffic accidents.

[0038] Such as Figure 2 When in specific use, Vehicle parking: Operating the low beam switch turns on the low beam, and operating the high beam switch turns on the high beam. The high beam automatically switches to the low beam after about 15 minutes (T1), and the lights flash during the switch. When the vehicle is traveling at a low speed not higher than 10 km / h (V1), it maintains the low beam state, such as the starting condition at a traffic intersection. When the vehicle accelerates while traveling and the speed is higher than 50 km / h (V2) and exceeds 20 seconds (T2), it automatically switches to the high beam, and the lights flash during the switch; and it maintains the high beam while traveling at a speed higher than 50 km / h. When the driver steps on the brake (meeting an oncoming vehicle) during high-speed driving, it automatically switches to the low beam, and the lights flash during the switch. When ending the meeting with an oncoming vehicle, when the vehicle accelerates while driving and the speed continues to be higher than 50 km / h, after about 20 seconds of T2 time, it automatically switches to the high beam, and the lights flash during the switch. When the accelerator is released and the vehicle naturally decelerates below 40 km / h (V3) and exceeds 10 seconds (T3), it automatically switches to the low beam, such as the condition when entering an intersection.

Claims

1. A vehicle high and low beam light control method, characterized in that: It includes a signal acquisition unit, a control unit and a light execution unit. The signal acquisition unit includes a vehicle speed sensor, a brake sensor and an accelerator sensor. The control unit has an automatic high and low beam switching mode. The following steps are involved: S1. Collection steps: obtaining the vehicle speed signal in real time through the vehicle speed sensor; obtaining the vehicle brake signal through the brake sensor; obtaining the vehicle throttle signal through the throttle sensor; S2. Determination step: The control unit in the automatic high and low beam switching mode determines the driving state of the vehicle based on one or more signals of the received vehicle speed signal, brake signal and throttle signal, and issues a control instruction for automatic switching of the vehicle high and low beam lights according to preset rules; S3. Switching step: The light execution unit receives the control command from the control unit and executes the corresponding vehicle high and low beam switching action.

2. The vehicle high and low beam light control method according to claim 1, characterized in that: The preset rules include: When it is determined that the vehicle has turned on the high beam switch and the throttle is in the on-state signal, and when the vehicle speed exceeds V2 and the duration exceeds T2, the control unit controls the light execution unit to switch the low beam to the high beam; When it is determined that the vehicle speed is lower than V1 and the duration exceeds T1, the control unit controls the light execution unit to switch the high beam to low beam; When it is determined that the vehicle is braking, the control unit controls the light execution unit to switch the high beam to the low beam; When it is determined that the vehicle is in the throttle release signal and the vehicle speed is lower than V3 and the duration exceeds T3, the control unit controls the lighting execution unit to switch the high beam to the low beam.

3. The vehicle high and low beam light control method according to claim 2, characterized in that: When it is determined that the vehicle is parked, the control unit controls the light execution unit to maintain the high beam duration T1, and switches to low beam after the high beam duration exceeds T1.

4. The vehicle high and low beam light control method according to claim 2 or 3, characterized in that: V1 is 0-15km / h, V2 is 50-80km / h, V3 is less than or equal to V2-5km / h, and greater than or equal to V1+10km / h.

5. The vehicle high and low beam light control method according to claim 4, characterized in that: Adjust preset rules in different scenarios of urban roads, rural roads and highways. On urban roads, V1 is set to 5km / h, V2 is set to 60km / h, and V3 is set to 55km / h. On rural roads, V1 is set to 10km / h, V2 is set to 50km / h, and V3 is set to 40km / h; On the highway, V1 is set to 15km / h, V2 is set to 80km / h, and V3 is set to 65km / h.

6. The vehicle high and low beam light control method according to claim 2 or 3, characterized in that: T1 was set to 15 min, T2 to 20 s, and T3 to 10 s.

7. The vehicle high and low beam light control method according to claim 2 or 3, characterized in that: When the high and low beams are switched, the light execution unit also controls the light to flash for T seconds, and the light flashing states in different switching states can be set to be different.

8. The vehicle high and low beam light control method according to claim 7, characterized in that: T is set to 1s.

9. The vehicle high and low beam light control method according to claim 1, 2 or 3, characterized in that: The control unit has a manual low beam mode, a manual high beam mode and an automatic high and low beam switching mode, wherein the manual low beam mode is triggered by manually operating the low beam switch, the automatic high and low beam switching mode is triggered by manually operating the high beam switch once, and the manual high beam mode is triggered by manually operating the high beam switch twice.

10. The vehicle high and low beam light control method according to claim 9, characterized in that: When the vehicle speed in manual high beam mode is lower than V1, the control unit controls the switch to automatic high and low beam switching mode.

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