Wiper control system, control method, and vehicle having the same

Abstract

A kind of turn signal (40) control system, control method and the vehicle with it, the turn signal (40) control system includes road condition information acquisition unit (10), vehicle information acquisition unit (20), processing unit (30) and turn signal (40), road condition information acquisition unit (10) acquires road information, and the road information is passed to processing unit (30), vehicle information acquisition unit (20) acquires vehicle itself driving information, and the vehicle itself driving information is passed to processing unit (30), processing unit (30) predicts the driving trajectory and the steering direction of vehicle according to vehicle itself driving information, according to the driving trajectory of vehicle and road information, it is judged that vehicle reaches the pre-turning time of preset steering position, and pre-turning time is compared with first preset time, when pre-turning time is less than first preset time, processing unit (30) lights up the turn signal (40) corresponding to steering direction.

Description

Technical Field

[0001] This invention relates to the field of vehicle intelligent control technology, and in particular to a turn signal control system, control method, and vehicle having the same. Background Technology

[0002] When a driver turns or maneuvers, they need to control the vehicle's turn signals. This requires the driver to manually adjust the turn signal switch arm to activate the turn signal signal. In certain situations, drivers may sometimes neglect or fail to do so, which will result in penalties for violating traffic rules and, in serious cases, may increase the risk of traffic accidents.

[0003] In addition, for inexperienced drivers, controlling the turn signal while steering can easily lead to steering wheel operation errors or decreased precision, causing traffic accidents.

[0004] With increasingly strict enforcement of traffic regulations and the widespread adoption of high-definition electronic traffic enforcement cameras, drivers who fail to actively activate their turn signals while turning will face points deductions and fines. Therefore, automatic turn signal control systems are increasingly being applied to vehicles. However, current technology typically uses cameras to detect the driver's head movements to predict whether the vehicle will turn or turn in a specific direction. This model, however, is divorced from actual road conditions and has a high false alarm rate. Furthermore, it cannot definitively determine when to activate and deactivate the turn signal. Summary of the Invention

[0005] This invention provides a turn signal control system, a control method, and a vehicle having the same. The turn signal control system can intelligently control the turn signals according to the vehicle's driving conditions with a low error rate.

[0006] This invention provides a turn signal control system, including a road condition information acquisition unit, a vehicle information acquisition unit, a processing unit, and turn signals. The road condition information acquisition unit acquires road information and transmits it to the processing unit. The vehicle information acquisition unit acquires vehicle driving information and transmits it to the processing unit. The processing unit predicts the vehicle's driving trajectory and turning direction based on the vehicle's driving information. Based on the vehicle's driving trajectory and road information, the processing unit determines the pre-turning time for the vehicle to reach a preset turning position and compares the pre-turning time with a first preset time. When the pre-turning time is less than the first preset time, the processing unit illuminates the turn signal corresponding to the turning direction.

[0007] Furthermore, the road condition information collection unit is a front camera module, and the vehicle information collection unit is a power steering module and a policy dynamic domain manager.

[0008] The present invention also provides a turn signal control method, the method comprising the following steps:

[0009] S1: Collects road information and vehicle driving information;

[0010] S2: Determine the vehicle's driving trajectory and turning direction based on the vehicle's own driving information, and determine the pre-turning time for the vehicle to reach the preset turning position based on the vehicle's driving trajectory and the road information;

[0011] S3: Compare the pre-steering time with the first preset time. When the pre-steering time is less than the first preset time, turn on the turn signal corresponding to the steering direction.

[0012] Furthermore, the road information includes information used to analyze lane line positions and road trajectories.

[0013] Furthermore, the vehicle information includes steering wheel steering, lateral speed, and lateral acceleration information.

[0014] Furthermore, the preset steering position is the position when the front wheels of a vehicle in the steering direction reach the lane line in that direction, or the position when the rear wheels of a vehicle in the non-steering direction cross the lane line in the steering direction.

[0015] Furthermore, the first preset time is determined by one or more of the following: the user-selected base duration, the driver's driving habits, the vehicle's speed in the direction of travel, and the lateral distance between the vehicle and the lane line on the turning side.

[0016] Furthermore, after illuminating the turn signal, the method also includes continuing to collect and analyze the road information and the vehicle's driving information. When it is determined that the difference between the actual turning time and the pre-turning time between the vehicle's turn signal activation position and the pre-turning time is less than a second preset time, and the turn signal is continuously on for a longer period than a third preset time, the turn signal is turned off.

[0017] The present invention also provides a vehicle that includes the above-described turn signal control system.

[0018] In summary, this invention collects road information and vehicle driving information, and uses these two pieces of information to determine the pre-turning time T for the vehicle to reach the preset turning position. Then, it compares this pre-turning time T with a first preset time ΔT1. The turn signal is activated only when the pre-turning time T is less than ΔT1. That is, after determining that the vehicle intends to turn, the processing unit does not immediately activate the turn signal, but rather at time t after the start of the turn, i.e., at t = T1 - ΔT1 (where T1 is the initially estimated time to reach the preset turning position after the vehicle intends to turn, and this time decreases as the vehicle moves laterally). This comprehensively considers the running time of the vehicle trajectory model and the time for command processing and transmission on the vehicle, enabling a more accurate determination of whether the vehicle has a genuine turning intention within a certain timeframe after the initial turning intention, preventing misjudgments caused by small-angle turns and taking into account the vehicle's subsequent driving trajectory. Furthermore, by introducing the pre-turning time T, vehicle speed becomes a condition for activating the turn signal, preventing situations where the turn signal is activated only after entering an adjacent lane. In other words, the turn signal control system provided by this invention can more intelligently control the turn signals according to the vehicle's driving conditions, with a smaller error rate.

[0019] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] Figure 1 The figure shown is a system block diagram of the turn signal control system provided in an embodiment of the present invention.

[0021] Figure 2 The diagram shown is a logical schematic of each step of the turn signal control method provided in an embodiment of the present invention. Detailed Implementation

[0022] To further illustrate the technical means and effects adopted by the present invention in order to achieve the intended purpose, the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.

[0023] This invention provides a turn signal control system, a control method, and a vehicle having the same. The turn signal control system can intelligently control the turn signals according to the vehicle's driving conditions with a low error rate.

[0024] Figure 1 The diagram shown is a system block diagram of the turn signal 40 control system provided in an embodiment of the present invention. Figure 1As shown, the turn signal 40 control system provided in this embodiment of the invention includes a road condition information acquisition unit 10, a vehicle information acquisition unit 20, a processing unit 30, and a turn signal 40. The road condition information acquisition unit 10, the vehicle information acquisition unit 20, and the turn signal 40 are all electrically connected to the processing unit 30. The road condition information acquisition unit 10 acquires road information and transmits it to the processing unit 30. The vehicle information acquisition unit 20 acquires the vehicle's own driving information and transmits it to the processing unit 30. The processing unit 30 predicts the vehicle's driving trajectory and turning direction based on the vehicle's own driving information; based on the vehicle's driving trajectory and road information, it determines the pre-turning time T for the vehicle to reach a preset turning position and compares the pre-turning time T with a first preset time ΔT1. When the pre-turning time T is less than ΔT1, the processing unit 30 illuminates the turn signal 40 corresponding to the turning direction.

[0025] In this embodiment, the vehicle can determine whether it has a turning intention by whether it deviates from the forward driving route. By collecting road information and the vehicle's own driving information, the pre-turning time T for the vehicle to reach the preset turning position is determined using the above two information. Then, the pre-turning time T is compared with a first preset time △T1. The turn signal 40 will be activated only when the pre-turning time T is less than △T1. That is, after the processing unit 30 determines that the vehicle has a turning intention, it will not immediately activate the turn signal 40, but will activate the turn signal 40 at time t after the starting time of the turn, that is, at t = T1 - △T1 (T1 is the initial estimated time to reach the preset turning position after the vehicle has a turning intention, and this time will continuously decrease as the vehicle moves laterally). This can comprehensively consider the running time of the vehicle trajectory model and the time of command processing and transmission on the vehicle. It can more accurately determine whether the vehicle has a real turning intention within a time after the vehicle has an initial turning intention, prevent misjudgment caused by the vehicle turning at a small angle, and take into account the subsequent driving trajectory of the vehicle. Furthermore, by introducing a pre-steering time T, vehicle speed becomes a condition for determining when the turn signal 40 should be activated. This prevents the turn signal 40 from being activated only after entering an adjacent lane. In other words, the turn signal 40 control system provided in this embodiment of the invention more intelligently controls the turn signal 40 based on the vehicle's driving conditions, resulting in a smaller error rate.

[0026] Furthermore, in this embodiment, the preset turning position can be the position when the front wheels of a vehicle in the turning direction reach the lane line in that direction, or it can be the position when the rear wheels of a vehicle in the non-turning direction cross the lane line in the turning direction, that is, when the vehicle has completely entered the adjacent lane.

[0027] Furthermore, in this embodiment, the road condition information acquisition unit 10 can be an FCM (Front Camera Module), which analyzes road information such as lane line position and road trajectory through the acquired images. The vehicle information acquisition unit 20 can be a PSCM (Power Steering Control Module) or VDDM (Vehicle Dynamics Domain Master), which calculates the pre-steering time T by acquiring the vehicle's own driving information such as steering wheel angle, lateral speed, and lateral acceleration, combined with the lateral distance of the vehicle to the lane line in the steering direction.

[0028] Furthermore, in this embodiment, the first preset time △T1 can be determined by one or more of the following: a user-selected base duration, the driver's driving habits, the vehicle's speed in the forward direction, and the lateral distance between the vehicle and the lane line on the turning side. By setting the aforementioned influencing factors, the first preset time △T1 can be set according to the user's needs, such as providing multiple time settings, and can be combined with the driver's driving habits and speed, making the control system's control of the turn signal 40 more accurate.

[0029] That is, in this embodiment, when the processing unit 30 determines that the vehicle has a leftward driving trajectory based on the steering wheel angle, it can calculate the expected pre-steering time T based on the vehicle's lateral speed, lateral acceleration, and the lateral distance between the vehicle and the lane line. When the pre-steering time T is less than a first preset time △T1, it is determined that the vehicle will enter the adjacent lane within an appropriate time period, and the left turn signal 40 will be illuminated. Similarly, if the vehicle has a rightward driving trajectory and the pre-steering time T is less than the first preset time △T1, the processing unit 30 will illuminate the right turn signal 40; while if the vehicle has a leftward or rightward driving trajectory, but the pre-steering time T is greater than the first preset time △T1, the vehicle will not illuminate the turn signal 40 until the pre-steering time T is less than the first preset time △T1.

[0030] Furthermore, after the turn signal 40 is turned on, the processing unit 30 continues to analyze the road information collected by the road condition information collection unit 10 and the vehicle driving information collected by the vehicle information collection unit 20. When the difference between the actual turning time T1 and the pre-turning time T between the vehicle's position where it is determined that the turn signal 40 needs to be turned on and the vehicle's position is reached is less than the second preset time △T2, and the turn signal 40 is continuously turned on for a longer period than the third preset time △T3, it indicates that the vehicle has successfully completed the turn. The processing unit 30 then controls the turn signal 40 to turn off, thus completing the turn signal 40 control process.

[0031] Figure 2 The diagram shown is a logical schematic of each step in the turn signal 40 control method provided in an embodiment of the present invention. Figure 2 As shown, the present invention also provides a method for controlling a turn signal 40, the method comprising the following steps:

[0032] S1: Collects road information and vehicle driving information;

[0033] In this step, road information includes, but is not limited to, information used to analyze lane line positions and road trajectories; while vehicle driving information includes, but is not limited to, steering wheel angle, lateral speed, and lateral acceleration.

[0034] S2: Determine the vehicle's driving trajectory and turning direction based on the vehicle's own driving information, and determine the pre-turning time T for the vehicle to reach the preset turning position based on the vehicle's driving trajectory and road information.

[0035] In this step, the preset turning position can be the position when the front wheels of a vehicle in the turning direction reach the lane line in that direction, or the position when the rear wheels of a vehicle in the non-turning direction cross the lane line in the turning direction, that is, when the vehicle is completely in the adjacent lane.

[0036] S3: Compare the pre-steering time T with the first preset time △T1. When the pre-steering time T is less than the first preset time △T1, turn on the turn signal 40 corresponding to the steering direction.

[0037] In this step, the first preset time △T1 can be determined by one or more of the following: the user-selected base duration, the driver's driving habits, the vehicle's speed in the direction of travel, and the lateral distance between the vehicle and the lane line on the turning side.

[0038] After the turn signal 40 is turned on, the method also includes continuing to collect and analyze road information and vehicle driving information. When it is determined that the difference between the actual turning time T1 and the pre-turning time T between the position where the turn signal 40 is turned on and the position where the vehicle reaches the preset turning position is less than the second preset time △T2, and the turn signal 40 is continuously turned on for a longer time than the third preset time △T3, the turn signal 40 is turned off.

[0039] In summary, this invention collects road information and vehicle driving information, and uses these two pieces of information to determine the pre-turning time T for the vehicle to reach the preset turning position. Then, it compares the pre-turning time T with a first preset time △T1. The turn signal 40 will only be activated when the pre-turning time T is less than △T1. That is, after the processing unit 30 determines that the vehicle has a turning intention, it will not immediately activate the turn signal 40, but will activate it at time t after the start of the turn, that is, at t = T1 - △T1 (T1 is the initial estimated time to reach the preset turning position after the vehicle has a turning intention, and this time will continuously decrease as the vehicle moves laterally). This allows for a comprehensive consideration of the running time of the vehicle trajectory model and the time for command processing and transmission on the vehicle. It can more accurately determine whether the vehicle has a real turning intention within a certain time after the vehicle has an initial turning intention, preventing misjudgments caused by small-angle turns of the vehicle, and taking into account the subsequent driving trajectory of the vehicle. Furthermore, by introducing a pre-steering time T, vehicle speed becomes the determining factor for activating the turn signal 40. This prevents the turn signal 40 from being activated only after entering an adjacent lane. In other words, the turn signal 40 control system provided by this invention more intelligently controls the turn signal 40 based on the vehicle's driving conditions, resulting in a smaller error rate.

[0040] The present invention also provides a vehicle that includes the aforementioned turn signal 40 control system. For other technical features of the vehicle, please refer to the prior art, which will not be repeated here.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A turn signal control system, characterized in that: The system includes a road condition information collection unit, a vehicle information collection unit, a processing unit, and turn signals. The road condition information collection unit collects road information and transmits it to the processing unit. The vehicle information collection unit collects vehicle driving information and transmits it to the processing unit. The processing unit predicts the vehicle's driving trajectory and turning direction based on the vehicle's driving information. Based on the vehicle's driving trajectory and road information, it determines the pre-turning time for the vehicle to reach a preset turning position and compares the pre-turning time with a first preset time. When the pre-turning time is less than the first preset time, the processing unit illuminates the turn signal corresponding to the turning direction. After illuminating the turn signal, the system continues to collect and analyze the road information and the vehicle's driving information. When the difference between the actual turning time from the position where the turn signal is activated to the point where the vehicle reaches the preset turning position and the pre-turning time is less than a second preset time, and the turn signal is continuously on for a longer period than a third preset time, the turn signal is deactivated.

2. The turn signal control system according to claim 1, characterized in that: The road condition information collection unit is a front camera module, and the vehicle information collection unit is a power steering module and a policy dynamic domain manager.

3. A turn signal control method, characterized in that: Includes the following steps: S1: Collects road information and vehicle driving information; S2: Determine the vehicle's driving trajectory and turning direction based on the vehicle's own driving information, and determine the pre-turning time for the vehicle to reach the preset turning position based on the vehicle's driving trajectory and the road information; S3: Compare the pre-turn time with the first preset time. When the pre-turn time is less than the first preset time, turn on the turn signal corresponding to the turning direction. After the turn signal is turned on, the method further includes continuing to collect and analyze the road information and the vehicle's own driving information. When it is determined that the difference between the actual turning time and the pre-turning time between the vehicle's turn signal activation position and the pre-turning time is less than a second preset time, and the turn signal is continuously on for a longer period than a third preset time, the turn signal is turned off.

4. The turn signal control method according to claim 3, characterized in that: The road information includes information used to analyze lane line positions and road trajectories.

5. The turn signal control method according to claim 3, characterized in that: The vehicle's own driving information includes steering wheel steering, lateral speed, and lateral acceleration information.

6. The turn signal control method according to claim 3, characterized in that: The preset steering position is the position when the front wheels of a vehicle in the steering direction reach the lane line in that direction, or the position when the rear wheels of a vehicle in the non-steering direction cross the lane line in the steering direction.

7. The turn signal control method according to claim 3, characterized in that: The first preset time is determined by one or more of the following: the user-selected base duration, the driver's driving habits, the vehicle's speed in the direction of travel, and the lateral distance between the vehicle and the lane line on the turning side.

8. A vehicle, characterized in that: The system includes the turn signal control system as described in any one of claims 1 to 2.

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