Steering pattern ground projection control method based on automobile projection lamp

Abstract

The invention provides a steering pattern ground projection control method based on an automobile projection lamp. The method comprises the following steps: acquiring steering motion state parameters of a steering sensor; performing rotation projection difference processing on the steering motion state parameter and a preset steering parameter to obtain a projection steering difference component; and transmitting a steering projection on-off signal to a steering projection controller according to the projection steering difference component. After the steering motion state parameters are collected, the steering condition of the steering sensor in the current automobile moving process is determined, and then the steering motion state parameters are compared with the standard steering state parameters, so that the difference between the current automobile steering state of the steering sensor and the standard automobile steering state is conveniently determined; and finally, according to the difference value, the projection working mode of each steering projection light source is adjusted through the steering projection controller, so that the on-off state of the steering projection light source is conveniently adjusted, and the timeliness of surrounding warning is effectively improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of projection lamps, and in particular to a method for controlling ground projection of a turning pattern based on an automobile projection lamp. Background Art

[0002] With the improvement of industry regulations and active safety requirements, ground symbol projection modules and adaptive high beam modules have become important directions for the development of automotive lighting. Both ground symbol projection modules and adaptive high beam modules are suitable for different working conditions: the adaptive high beam module projects the lighting pattern in the form of parallel light directly in front of the car, mainly working when the car is driving at high speed, providing long-distance lighting for the driver, while avoiding glare for pedestrians and drivers of other vehicles; the ground symbol projection module projects the lighting pattern onto the ground in front of the car, mainly working at low speed and parking state, providing pedestrians and drivers of other vehicles with vehicle steering, stopping and other warning signals, becoming a new channel for human / vehicle and vehicle / vehicle information interaction, for example, application numbers are CN202110505005.X and CN201910442499.4.

[0003] However, the traditional ground projection module requires the driver to dial or press the corresponding projection button to trigger the projection of the lighting pattern onto the ground in front of the car. In the event that the driver has physical abnormalities and loses control of the vehicle, for example, a sudden heart attack, the driver is very likely to be unable to stop the car, and cannot press the case of the ground projection module in time to alert surrounding pedestrians and other vehicles, which can easily lead to serious personal injury accidents. Summary of the invention

[0004] The purpose of the present disclosure is to overcome the deficiencies in the prior art and to provide a ground projection control method for a steering pattern based on a vehicle projection lamp, which can effectively improve the timeliness of surrounding warnings through steering projection.

[0005] The purpose of this disclosure is achieved through the following technical solutions:

[0006] A method for controlling ground projection of a steering pattern based on an automobile projection lamp comprises: using an automobile projection lamp to perform ground projection of a steering pattern, the automobile projection lamp comprising: a projection lamp body, a steering sensor, a steering projection controller and a plurality of steering projection components, the projection lamp body being used to be installed in a steering lamp slot of an automobile; each of the steering projection components comprising a steering projection light source and a projection film, the steering projection light source being arranged in the projection lamp body, the light emitting end of the steering projection light source facing the projection outlet of the projection lamp body, the light emitting end of each steering projection light source being arranged corresponding to a projection film, and a plurality of steering projection light sources being arranged in sequence and spaced apart; the steering sensor being arranged in the projection lamp body; the steering projection controller being arranged in the projection lamp body, the sensing input end of the steering projection controller being electrically connected to the output end of the steering sensor, and the projection output end of the steering projection controller being electrically connected to each of the steering projection light sources, so as to adjust the projection switches of the plurality of steering projection light sources;

[0007] The steering pattern ground projection control method comprises:

[0008] Obtaining steering motion state parameters of the steering sensor;

[0009] Performing projection difference processing on the steering motion state parameter and the preset steering parameter to obtain a projected steering difference component;

[0010] A steering projection on / off signal is sent to a steering projection controller according to the projection steering difference component to adjust the projection working mode of each steering projection light source.

[0011] In one of the embodiments, obtaining the steering motion state parameter of the steering sensor includes: obtaining the steering deflection angle of the steering sensor.

[0012] In one of the embodiments, the projected difference processing of the steering motion state parameter and the preset steering parameter to obtain a projected steering difference component includes: obtaining the difference between the steering deflection angle and the preset deflection angle to obtain a steering deflection angle difference.

[0013] In one of the embodiments, sending a steering projection start and close signal to a steering projection controller according to the projection steering difference component to adjust the projection working mode of each steering projection light source includes: detecting whether the steering deflection angle difference is greater than a preset steering deflection angle difference; when the steering deflection angle difference is greater than the preset steering deflection angle difference, sending a right turn flowing water projection start signal to the steering projection controller.

[0014] In one of the embodiments, the detecting whether the steering angle difference is greater than a preset steering angle difference further includes: when the steering angle difference is less than the preset steering angle difference, sending a left turn flowing water projection start signal to the steering projection controller.

[0015] In one of the embodiments, the detecting whether the steering angle difference is greater than a preset steering angle difference further includes: when the steering angle difference is equal to the preset steering angle difference, sending a steering projection closing signal to the steering projection controller.

[0016] In one of the embodiments, the step of acquiring the steering motion state parameter of the steering sensor includes: acquiring the steering deflection acceleration of the steering sensor.

[0017] In one of the embodiments, the projected difference processing of the steering motion state parameter and the preset steering parameter to obtain a projected steering difference component includes: obtaining the difference between the steering deflection acceleration and the preset deflection acceleration to obtain a steering acceleration difference.

[0018] In one of the embodiments, sending a steering projection start and close signal to a steering projection controller according to the projection steering difference component to adjust the projection working mode of each steering projection light source includes: detecting whether the steering acceleration difference is greater than a preset steering acceleration difference; when the steering acceleration difference is greater than the preset steering acceleration difference, sending a right turn water projection start signal to the steering projection controller.

[0019] In one of the embodiments, the detecting whether the steering acceleration difference is greater than a preset steering acceleration difference further includes: when the steering acceleration difference is less than the preset steering acceleration difference, sending a left turn flowing projection start signal to the steering projection controller.

[0020] Compared with the prior art, the present invention has at least the following advantages:

[0021] After the steering motion state parameters are collected, the steering situation of the steering sensor during the current movement of the vehicle is determined, and then the steering motion state parameters are compared with the standard steering state parameters to facilitate determining the difference between the current vehicle steering state of the steering sensor and the standard vehicle steering. Finally, according to the above difference value, the projection working mode of each steering projection light source is adjusted through the steering projection controller to facilitate adjustment of the switching state of the steering projection light source, so as to facilitate output of the steering projection to the ground when the vehicle is out of control, thereby effectively improving the timeliness of the surrounding warning. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 The figure is a flow chart of a method for controlling ground projection of a turning pattern based on a car projection lamp in one embodiment. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0025] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] The present disclosure relates to a method for controlling the ground projection of a steering pattern based on a car projection lamp. In one embodiment, the method for controlling the ground projection of a steering pattern based on a car projection lamp includes obtaining a steering motion state parameter of a steering sensor; performing a differential process on the steering motion state parameter and a preset steering parameter to obtain a projection steering differential component; and sending a steering projection on / off signal to a steering projection controller according to the projection steering differential component to adjust the projection working mode of each steering projection light source. After the steering motion state parameter is collected, the steering situation of the current car movement process of the steering sensor is determined, and then the steering motion state parameter is compared with the standard steering state parameter to facilitate determining the difference between the current car steering state of the steering sensor and the standard car steering. Finally, according to the above difference value, the projection working mode of each steering projection light source is adjusted through the steering projection controller, so as to facilitate adjusting the switch state of the steering projection light source, and facilitate outputting the steering projection to the ground when the vehicle is out of control, which effectively improves the timeliness of the surrounding warning.

[0028] See also Figure 1 , which is a flow chart of a method for controlling the ground projection of a steering pattern based on a car projection lamp according to an embodiment of the present disclosure. The car projection lamp comprises: a projection lamp body, a steering sensor, a steering projection controller and a plurality of steering projection components; the projection lamp body is used to be installed in the steering lamp slot of a car; each of the steering projection components comprises a steering projection light source and a projection film, the steering projection light source is arranged in the projection lamp body, the light-emitting end of the steering projection light source faces the projection outlet of the projection lamp body, the light-emitting end of each steering projection light source is arranged corresponding to a projection film, and a plurality of steering projection light sources are arranged in sequence at intervals; the steering sensor is arranged in the projection lamp body, and the steering sensor is used to sense the steering of the car; the steering projection controller is arranged in the projection lamp body, the sensing input end of the steering projection controller is electrically connected to the output end of the steering sensor, and the projection output end of the steering projection controller is electrically connected to each of the steering projection light sources to adjust the projection switches of the plurality of steering projection light sources. Wherein, the method for controlling the ground projection of a steering pattern based on a car projection lamp comprises some or all of the following steps.

[0029] The steering pattern ground projection control method comprises:

[0030] S100: Obtaining steering motion state parameters of a steering sensor.

[0031] In this embodiment, the steering motion state parameter is the steering motion data sensed by the steering sensor, that is, the steering motion state parameter is the current steering state of the car sensed by the steering sensor, that is, the steering motion state parameter corresponds to the steering movement mode of the car. By collecting the steering motion state parameter, it is convenient to determine the situation in which the steering sensor senses a change in the steering of the car, thereby facilitating the determination of the real-time motion state of the car.

[0032] S200: performing projection difference processing on the steering motion state parameter and the preset steering parameter to obtain a projected steering difference component.

[0033] In this embodiment, the steering motion state parameter is the steering motion data sensed by the steering sensor, that is, the steering motion state parameter is the current steering state of the car sensed by the steering sensor, that is, the steering motion state parameter corresponds to the steering movement mode of the car. By collecting the steering motion state parameter, it is convenient to determine the situation in which the steering sensor senses a change in the steering of the car, thereby facilitating the determination of the real-time motion state of the car. The preset steering parameter is the standard steering motion data sensed by the steering sensor, that is, the steering motion state parameter is the reference steering state of the car sensed by the steering sensor, that is, the steering motion state parameter corresponds to the specified steering movement mode of the car. By performing differential processing on the steering motion state parameter and the preset steering parameter, it is convenient to determine the steering deviation degree of the car sensed by the steering sensor, thereby facilitating the determination of whether the car has made a steering movement.

[0034] S300: Sending a steering projection on / off signal to a steering projection controller according to the projection steering difference, so as to adjust the projection working mode of each steering projection light source.

[0035] In this embodiment, the projected steering differential component is obtained based on the steering motion state parameter and the preset steering parameter. The steering motion state parameter is the steering motion data sensed by the steering sensor, that is, the steering motion state parameter is the current steering state of the car sensed by the steering sensor, that is, the steering motion state parameter corresponds to the steering movement mode of the car. By collecting the steering motion state parameter, it is convenient to determine the situation where the steering sensor senses a change in the steering of the car, so as to facilitate the determination of the real-time motion state of the car. The preset steering parameter is the standard steering motion data sensed by the steering sensor, that is, the steering motion state parameter is the reference steering state of the car sensed by the steering sensor, that is, the steering motion state parameter corresponds to the specified steering movement mode of the car. By performing a projection differential processing on the steering motion state parameter and the preset steering parameter, it is convenient to determine the steering deviation degree of the car sensed by the steering sensor, so as to facilitate the determination of whether the car has a steering movement. After obtaining the projection steering differential, the steering sensor senses that the vehicle is turning and determines that a steering projection start and close signal is sent to the steering projection controller, so that the steering projection controller can adjust the projection working mode of each steering projection light source to facilitate timely output of the corresponding ground projection for warning.

[0036] In the above embodiment, after the steering motion state parameters are collected, the steering situation of the current vehicle movement process of the steering sensor is determined, and then the steering motion state parameters are compared with the standard steering state parameters to facilitate determining the difference between the current vehicle steering state of the steering sensor and the standard vehicle steering. Finally, according to the above difference value, the projection working mode of each steering projection light source is adjusted through the steering projection controller, which is convenient for adjusting the switching state of the steering projection light source, and facilitating the output of the steering projection to the ground when the vehicle is out of control, thereby effectively improving the timeliness of the surrounding warning.

[0037] In one embodiment, the acquisition of the steering motion state parameter of the steering sensor includes: acquiring the steering deflection angle of the steering sensor. In this embodiment, the steering motion state parameter is the steering motion data sensed by the steering sensor, that is, the steering motion state parameter is the current steering state of the car sensed by the steering sensor, that is, the steering motion state parameter corresponds to the steering movement mode of the car. By collecting the steering motion state parameter, it is convenient to determine the situation in which the steering sensor senses a change in the steering of the car, thereby facilitating the determination of the real-time motion state of the car. The steering motion state parameter includes the steering deflection angle of the steering sensor, and the steering deflection angle is the steering direction angle of the car sensed by the steering sensor. Specifically, the steering sensor includes a gyroscope. By collecting the steering deflection angle by the gyroscope, it is convenient to determine the steering deflection size of the car sensed by the steering sensor.

[0038] Further, the said performing a projection difference processing on the said steering motion state parameter and the preset steering parameter to obtain the projected steering difference component includes: obtaining the difference between the said steering deflection angle and the preset deflection angle to obtain the steering deflection angle difference. In this embodiment, the said steering motion state parameter is the steering motion data sensed by the said steering sensor, that is, the said steering motion state parameter is the current steering state of the automobile sensed by the said steering sensor, that is, the said steering motion state parameter corresponds to the steering movement mode of the automobile. By collecting the said steering motion state parameter, it is convenient to determine the situation that the said steering sensor senses the steering change of the automobile, so as to facilitate the determination of the real-time motion state of the automobile. The said preset steering parameter is the standard steering motion data sensed by the said steering sensor, that is, the said steering motion state parameter is the reference steering state of the automobile sensed by the said steering sensor, that is, the said steering motion state parameter corresponds to the specified steering movement mode of the automobile, and by performing a projection difference processing on the said steering motion state parameter and the said preset steering parameter, it is convenient to determine the steering deviation degree of the automobile sensed by the said steering sensor, so as to facilitate the determination of whether the automobile has a steering movement. The steering motion state parameter includes the steering deflection angle of the steering sensor, and the steering deflection angle is the steering direction angle of the vehicle sensed by the steering sensor. By collecting the steering deflection angle, it is convenient to determine the steering deflection size of the vehicle sensed by the steering sensor. By calculating the difference between the steering deflection angle and the preset deflection angle, the steering deviation degree of the vehicle sensed by the steering sensor is determined, thereby determining the steering deviation of the vehicle sensed by the steering sensor from the center position.

[0039] Furthermore, the method of sending a steering projection start-up and close signal to the steering projection controller according to the projection steering difference component to adjust the projection working mode of each steering projection light source includes: detecting whether the steering deflection angle difference is greater than a preset steering deflection angle difference; when the steering deflection angle difference is greater than the preset steering deflection angle difference, sending a right-turn water flow projection start signal to the steering projection controller. In this embodiment, the projection steering difference component is obtained based on the steering motion state parameter and the preset steering parameter, and the steering motion state parameter is the steering motion data sensed by the steering sensor, that is, the steering motion state parameter is the current steering state of the car sensed by the steering sensor, that is, the steering motion state parameter corresponds to the steering movement mode of the car. By collecting the steering motion state parameter, it is convenient to determine the situation in which the steering sensor senses a change in the steering of the car, thereby facilitating the determination of the real-time motion state of the car. The preset steering parameter is the standard steering motion data sensed by the steering sensor, that is, the steering motion state parameter is the reference steering state of the car sensed by the steering sensor, that is, the steering motion state parameter corresponds to the specified steering movement mode of the car. By processing the difference between the steering motion state parameter and the preset steering parameter, it is convenient to determine the steering deviation degree of the car sensed by the steering sensor, so as to facilitate determining whether the car has turned. After obtaining the projection steering difference, it is determined that the steering sensor senses that the car has turned, and by sending a steering projection start and close signal to the steering projection controller, the steering projection controller regulates the projection working mode of each steering projection light source, so as to facilitate timely output of the corresponding ground projection for warning. The steering motion state parameter includes the steering deflection angle of the steering sensor, and the steering deflection angle is the steering direction angle of the car sensed by the steering sensor. By collecting the steering deflection angle, it is convenient to determine the steering deflection size of the car sensed by the steering sensor. By calculating the difference between the steering deflection angle and the preset deflection angle, the steering deviation degree of the vehicle sensed by the steering sensor is determined, thereby determining the situation where the steering sensor senses the steering deviation of the vehicle from the center position. The steering deflection angle difference is greater than the preset steering deflection angle difference, indicating that the steering sensor senses a large degree of steering deviation from the center of the vehicle, and the deflection of the vehicle is a large right-angle deflection, that is, the vehicle turns right at a large angle. At this time, a right-turn flowing projection start signal is sent to the steering projection controller so that the vehicle right-turn flowing projection is issued in time, so that a continuous and flashing projection pattern to the right is formed on the ground, for example, a right-pointing arrow distributed in a flowing manner.

[0040] In another embodiment, the detection of whether the steering deflection angle difference is greater than a preset steering deflection angle difference further includes: when the steering deflection angle difference is less than the preset steering deflection angle difference, sending a left turn flowing projection start signal to the steering projection controller. In this embodiment, the steering deflection angle difference is less than the preset steering deflection angle difference, indicating that the steering sensor senses that the steering deviation of the vehicle is large from the center, and the deflection of the vehicle is a large left-angle deflection, that is, the vehicle turns to the left at a large angle. At this time, a left turn flowing projection start signal is sent to the steering projection controller to facilitate the timely issuance of the vehicle's left turn flowing projection, so that a projection pattern that is continuously and flashingly distributed to the left is formed on the ground, for example, a leftward arrow distributed in flowing water.

[0041] In another embodiment, the detecting whether the steering deflection angle difference is greater than a preset steering deflection angle difference further includes: when the steering deflection angle difference is equal to the preset steering deflection angle difference, sending a steering projection closing signal to the steering projection controller. In this embodiment, the steering deflection angle difference is equal to the preset steering deflection angle difference, indicating that the steering sensor senses that the vehicle has not turned or deviated, that is, the vehicle moves along the positive center line, and at this time, by sending a steering projection closing signal to the steering projection controller, the moving direction of the vehicle remains in the center without steering deviation.

[0042] In one embodiment, the step of obtaining the steering motion state parameter of the steering sensor includes: obtaining the steering deflection acceleration of the steering sensor. In this embodiment, the steering motion state parameter is the steering motion data sensed by the steering sensor, that is, the steering motion state parameter is the current steering state of the car sensed by the steering sensor, that is, the steering motion state parameter corresponds to the steering movement mode of the car. By collecting the steering motion state parameter, it is convenient to determine the situation in which the steering sensor senses a change in the steering of the car, thereby facilitating the determination of the real-time motion state of the car. The steering motion state parameter includes the steering deflection acceleration of the steering sensor, and the steering deflection acceleration is the acceleration of the steering speed of the car sensed by the steering sensor. Specifically, the steering sensor includes an accelerometer, and the collection of the steering deflection acceleration by the accelerometer facilitates the determination of the steering deflection speed of the car sensed by the steering sensor.

[0043] Further, the said performing a projection difference processing on the said steering motion state parameter and the preset steering parameter to obtain the projected steering difference component includes: obtaining the difference between the said steering deflection acceleration and the preset deflection acceleration to obtain the steering acceleration difference. In this embodiment, the said steering motion state parameter is the steering motion data sensed by the said steering sensor, that is, the said steering motion state parameter is the current steering state of the automobile sensed by the said steering sensor, that is, the said steering motion state parameter corresponds to the steering movement mode of the automobile. By collecting the said steering motion state parameter, it is convenient to determine the situation that the said steering sensor senses the change in the steering of the automobile, so as to facilitate the determination of the real-time motion state of the automobile. The said preset steering parameter is the standard steering motion data sensed by the said steering sensor, that is, the said steering motion state parameter is the reference steering state of the automobile sensed by the said steering sensor, that is, the said steering motion state parameter corresponds to the specified steering movement mode of the automobile, and by performing a projection difference processing on the said steering motion state parameter and the said preset steering parameter, it is convenient to determine the steering deviation degree of the automobile sensed by the said steering sensor, so as to facilitate the determination of whether the automobile has a steering movement. The steering motion state parameter includes the steering deflection acceleration of the steering sensor, and the steering deflection acceleration is the acceleration of the steering speed of the vehicle sensed by the steering sensor. By collecting the steering deflection acceleration, it is convenient to determine the steering deflection speed of the vehicle sensed by the steering sensor. By calculating the difference between the steering deflection acceleration and the preset deflection acceleration, the steering deviation speed of the vehicle sensed by the steering sensor is determined, thereby determining the steering deviation of the vehicle sensed by the steering sensor from the center position.

[0044] Furthermore, the method of sending a steering projection on / off signal to a steering projection controller according to the projection steering difference component to adjust the projection working mode of each steering projection light source includes: detecting whether the steering acceleration difference is greater than a preset steering acceleration difference; when the steering acceleration difference is greater than the preset steering acceleration difference, sending a right-turn water flow projection on signal to the steering projection controller. In this embodiment, the projection steering difference component is obtained based on the steering motion state parameter and the preset steering parameter, and the steering motion state parameter is the steering motion data sensed by the steering sensor, that is, the steering motion state parameter is the current steering state of the car sensed by the steering sensor, that is, the steering motion state parameter corresponds to the steering movement mode of the car. By collecting the steering motion state parameter, it is convenient to determine the situation in which the steering sensor senses a change in the steering of the car, thereby facilitating the determination of the real-time motion state of the car. The preset steering parameter is the standard steering motion data sensed by the steering sensor, that is, the steering motion state parameter is the reference steering state of the car sensed by the steering sensor, that is, the steering motion state parameter corresponds to the specified steering movement mode of the car. By processing the difference between the steering motion state parameter and the preset steering parameter, it is convenient to determine the steering deviation speed of the car sensed by the steering sensor, so as to facilitate determining whether the car has turned. After obtaining the projection steering difference, it is determined that the steering sensor senses that the car has turned, and by sending a steering projection on / off signal to the steering projection controller, the steering projection controller regulates the projection working mode of each steering projection light source, so as to facilitate timely output of the corresponding ground projection for warning. The steering motion state parameter includes the steering deflection acceleration of the steering sensor, and the steering deflection acceleration is the acceleration of the steering speed of the car sensed by the steering sensor. By collecting the steering deflection acceleration, it is convenient to determine the steering deflection speed of the car sensed by the steering sensor. By calculating the difference between the steering deflection acceleration and the preset deflection acceleration, the steering sensor can be used to determine the speed of the steering deviation of the vehicle, thereby determining the steering deviation of the vehicle from the center position. The steering acceleration difference is greater than the preset steering acceleration difference, indicating that the steering sensor senses that the steering deviation of the vehicle is faster than the center, and the deflection of the vehicle is a rapid right deflection, that is, the vehicle turns right with a large acceleration. At this time, a right-turn flowing projection start signal is sent to the steering projection controller so that the vehicle right-turn flowing projection is issued in time, so that a continuous and flashing projection pattern to the right is formed on the ground, for example, a flowing right arrow.

[0045] In another embodiment, the detection of whether the steering acceleration difference is greater than a preset steering acceleration difference further includes: when the steering acceleration difference is less than the preset steering acceleration difference, sending a left-turn flowing projection start signal to the steering projection controller. In this embodiment, the steering acceleration difference is less than the preset steering acceleration difference, indicating that the steering sensor senses that the steering deviation of the car from the center is still relatively fast, and the deflection of the car is a rapid left deflection, that is, the car turns left with a large acceleration. At this time, a left-turn flowing projection start signal is sent to the steering projection controller to facilitate the timely issuance of the vehicle's left-turn flowing projection, so that a projection pattern that is continuously and flashingly distributed to the left is formed on the ground, for example, a left-pointing arrow distributed in flowing water.

[0046] In another embodiment, the detecting whether the steering acceleration difference is greater than a preset steering acceleration difference further includes: when the steering acceleration difference is equal to the preset steering acceleration difference, sending a steering projection closing signal to the steering projection controller. In this embodiment, the steering acceleration difference is equal to the preset steering acceleration difference, indicating that the steering sensor senses that the vehicle is turning smoothly, that is, the steering amplitude of the vehicle is small, and at this time, by sending a steering projection closing signal to the steering projection controller, the moving direction of the vehicle tends to remain in the middle.

[0047] During the actual projection process of the steering sensor when the car deviates from the steering direction, the car projection lamp projects the steering pattern onto the ground, mainly onto the ground in front of the left or right of the car. However, when passing a crosswalk or ramp, if a turn is required, since the steering pattern is basically white, the generated steering pattern is easily confused with the identification pattern on the ground, which is not convenient for people around to quickly identify, resulting in a poor warning effect.

[0048] In order to improve the recognizability of the steering pattern, the method further includes sending a steering projection on / off signal to the steering projection controller according to the projection steering differential component to adjust the projection working mode of each steering projection light source:

[0049] Acquire the ground projection brightness ratio of the steering sensor;

[0050] Detecting whether the ground projection brightness ratio matches a preset brightness ratio;

[0051] When the ground projection brightness ratio is less than or equal to the preset brightness ratio, a projection gray-raising signal is sent to the steering projection controller to increase the grayscale of the steering pattern.

[0052] In this embodiment, the ground projection brightness ratio is the ratio between the brightness of the light projected by the car projection lamp and the brightness of the ground mark collected by the steering sensor. Specifically, the steering sensor also includes a CCD camera, which collects the brightness of the steering pattern projected on the ground by the car projection lamp. At the same time, the CCD camera also collects the brightness of the mark on the ground, so as to determine the brightness ratio between the steering pattern and the ground mark. The ground projection brightness ratio matches the preset brightness ratio, indicating that the brightness difference between the steering pattern and the ground mark is too small, that is, indicating that the brightness of the steering pattern is equivalent to the brightness of the ground mark. At this time, a projection gray-raising signal is sent to the steering projection controller to increase the grayscale of the steering pattern, so that the steering pattern and the ground mark are distinguished by grayscale color difference, so as to improve the recognizability of the steering pattern on the ground.

[0053] Furthermore, the detecting whether the ground projection brightness ratio matches the preset brightness ratio further includes:

[0054] When the ground projection brightness ratio does not match the preset brightness ratio, acquiring the ground projection longitudinal spacing ratio of the steering sensor;

[0055] Detecting whether the ground projection longitudinal spacing ratio matches a preset longitudinal spacing ratio;

[0056] When the ground projection longitudinal spacing ratio matches the preset longitudinal spacing ratio, a projection reduction and increase signal is sent to the steering projection controller to reduce the distance between the steering patterns and increase the lateral distance of the steering patterns.

[0057] In this embodiment, the ground projection brightness ratio does not match the preset brightness ratio. At this time, the brightness of the turning pattern is quite different from that of the ground mark. Although it can be found, it may not be easy to find when the mark pattern on the ground is too close in shape to the turning pattern. In order to solve the problem of timely warning of similar images, it is necessary to further distinguish the projection patterns on the ground. The ground projection longitudinal spacing ratio is the longitudinal size comparison between the mark pattern on the ground and the turning pattern. Specifically, the ground projection longitudinal spacing ratio is the ratio of the image width of the turning pattern to the image width of the mark pattern on the ground in the turning direction, which is used to determine the width of the turning pattern along the turning direction of the car. The longitudinal spacing ratio of the ground projection matches the preset longitudinal spacing ratio, indicating that the longitudinal width of the turning pattern is similar to the longitudinal width of the identification pattern on the ground, that is, it indicates that in the turning direction, the width of the turning pattern is too different from the width of the identification pattern on the ground. At this time, the turning pattern is easily compatible with the identification pattern on the ground, which is not conducive to warning identification. By sending a projection reduction and amplification signal to the steering projection controller, the distribution distance between the steering patterns is reduced in the steering direction, so that the steering patterns projected on the ground are denser, which is convenient for projecting part of the steering pattern in the gap of the identification pattern on the ground. Moreover, the lateral distance of the steering pattern is increased at the same time, that is, the length of the steering pattern perpendicular to the steering direction is increased, so that the steering pattern projected on the ground exceeds the identification pattern on the ground, further effectively improving the warning recognizability of the steering pattern.

[0058] In another embodiment, the lateral distance of the turning pattern is increased in the projected distance reduction amplification signal so that the lateral distance of the turning pattern in the turning direction is distributed in a gradual manner, for example, the lateral distance of the turning pattern in the turning direction gradually decreases.

[0059] In another embodiment, when the ground projection longitudinal spacing ratio does not match the preset longitudinal spacing ratio, step S300 is executed.

[0060] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure shall be subject to the attached claims.

Claims

1. A method for controlling the ground projection of a turning pattern based on a car projection lamp, characterized in that: include: The turning pattern is projected on the ground by using an automobile projection lamp, and the automobile projection lamp comprises: A projection lamp body, the projection lamp body being used to be installed in a turn signal lamp slot of a car; A plurality of steering projection components, each of which comprises a steering projection light source and a projection film, wherein the steering projection light source is arranged in the projection lamp body, the light emitting end of the steering projection light source faces the projection outlet of the projection lamp body, the light emitting end of each steering projection light source is arranged corresponding to a projection film, and the plurality of steering projection light sources are arranged in sequence and spaced apart; A steering sensor, wherein the steering sensor is disposed in the projection lamp body; A steering projection controller, the steering projection controller is arranged in the projection lamp body, the sensing input end of the steering projection controller is electrically connected to the output end of the steering sensor, and the projection output end of the steering projection controller is electrically connected to each of the steering projection light sources, so as to adjust the projection switches of the multiple steering projection light sources; The steering pattern ground projection control method comprises: Obtaining steering motion state parameters of the steering sensor; Performing projection difference processing on the steering motion state parameter and the preset steering parameter to obtain a projected steering difference component; A steering projection on / off signal is sent to a steering projection controller according to the projection steering difference component to adjust the projection working mode of each steering projection light source.

2. The method for controlling the ground projection of a turning pattern based on a car projection lamp according to claim 1, characterized in that: The step of obtaining the steering motion state parameter of the steering sensor includes: Obtain a steering deflection angle of the steering sensor.

3. The method for controlling the ground projection of a turning pattern based on a car projection lamp according to claim 2, characterized in that: The step of performing a projection difference process on the steering motion state parameter and the preset steering parameter to obtain a projected steering difference component includes: The difference between the steering deflection angle and the preset deflection angle is calculated to obtain a steering deflection angle difference.

4. The method for controlling the ground projection of a turning pattern based on a car projection lamp according to claim 3, characterized in that: The step of sending a steering projection on / off signal to a steering projection controller according to the projection steering difference component to adjust the projection working mode of each steering projection light source comprises: Detecting whether the steering angle difference is greater than a preset steering angle difference; When the steering deflection angle difference is greater than the preset steering deflection angle difference, a right turn flowing water projection start signal is sent to the steering projection controller.

5. The method for controlling the ground projection of a turning pattern based on a car projection lamp according to claim 4, characterized in that: The step of detecting whether the steering angle difference is greater than a preset steering angle difference further includes: When the steering angle difference is less than the preset steering angle difference, a left-turn flowing water projection start signal is sent to the steering projection controller.

6. The method for controlling the ground projection of a turning pattern based on a car projection lamp according to claim 4, characterized in that: The step of detecting whether the steering angle difference is greater than a preset steering angle difference further includes: When the steering deflection angle difference is equal to the preset steering deflection angle difference, a steering projection closing signal is sent to the steering projection controller.

7. The method for controlling the ground projection of a turning pattern based on a car projection lamp according to claim 1, characterized in that: The step of obtaining the steering motion state parameter of the steering sensor includes: The steering deflection acceleration of the steering sensor is obtained.

8. The method for controlling the ground projection of a turning pattern based on a car projection lamp according to claim 7, characterized in that: The step of performing a projection difference process on the steering motion state parameter and the preset steering parameter to obtain a projected steering difference component includes: The difference between the steering deflection acceleration and the preset deflection acceleration is calculated to obtain a steering acceleration difference.

9. The method for controlling the ground projection of a turning pattern based on a car projection lamp according to claim 8, characterized in that: The step of sending a steering projection on / off signal to a steering projection controller according to the projection steering difference component to adjust the projection working mode of each steering projection light source comprises: detecting whether the steering acceleration difference is greater than a preset steering acceleration difference; When the steering acceleration difference is greater than the preset steering acceleration difference, a right-turn flowing water projection start signal is sent to the steering projection controller.

10. The method for controlling the ground projection of a turning pattern based on a car projection lamp according to claim 9, characterized in that: The step of detecting whether the steering acceleration difference is greater than a preset steering acceleration difference further includes: When the steering acceleration difference is less than the preset steering acceleration difference, a left-turn flowing water projection start signal is sent to the steering projection controller.

Images