Vehicle collision monitoring method and system in a stopped state based on UWB technology

Abstract

The application discloses a collision monitoring method and system for a vehicle in a stop state based on UWB technology, and relates to the technical field of vehicle safety driving and monitoring.The method comprises the following steps: in a driving state of a current vehicle, the current position, speed and acceleration are acquired in real time, and UWB radar is used to detect and locate obstacles in a set range around the current vehicle, wherein the obstacles include surrounding vehicles in a stop state; according to the data information acquired and detected in real time, it is determined whether the current vehicle and the obstacles are within a safe distance range; if not, the collision safety risk level is determined, and warning information is generated for warning; meanwhile, the warning information is sent to the surrounding vehicles in the stop state through UWB technology; after receiving the warning information, the vehicle control hardware and a vehicle event data recorder are woken up, and collision monitoring and recording are performed.The application can solve the problem that collision information cannot be recorded completely due to recording after a fault occurs in the prior art, and effectively improves the driving safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle safety driving and monitoring, in particular to a vehicle collision monitoring method and system in a stopped state based on UWB technology. BACKGROUND

[0002] With the popularity of intelligent electronic devices, it is more and more common to load a vehicle with a driving recorder on a vehicle. The driving recorder can not only record the driving condition of the vehicle in the driving state, but also can monitor and record in the stopped state, which is used as a parking monitoring. At present, the existing parking monitoring method is usually as follows: when the vehicle is scratched, scraped, collided or other accidents occur, the vehicle is vibrated by the external impact, the vehicle collision sensor sends a collision signal to the parking monitoring system, the parking monitoring system receives the collision signal and wakes up the driving recorder hardware, the driving recorder automatically starts and enters the shooting mode; after a certain time of shooting, it enters the sleep mode again.

[0003] That is, the existing parking monitoring method usually records after the accident occurs. From the occurrence of the fault, the collision sensor detects the collision signal, sends the collision signal, the driving recorder hardware is woken up, to the driving recorder starts recording, a series of processes need time, and the scene of the final shooting record is the scene after a certain time of collision, which is difficult to record the whole process of the collision occurrence, especially cannot record the situation before the collision, and cannot provide collision prompt and early warning information to reduce the risk of collision, which has a certain impact on the safety of the vehicle in the stopped state.

[0004] In addition, with the development of communication technology, new ultra-wideband wireless communication carrierless communication technology (i.e. UWB) has been gradually applied. The bandwidth of UWB signal is large, the power of each frequency point is low, UWB signal can accurately distinguish the first arrival signal and multipath transmission signal in wireless transmission, so the technology has the characteristics of high precision positioning, strong penetration, strong anti-interference, high safety performance, etc. Moreover, compared with the traditional laser, infrared detection and sound wave detection technology, the UWB radar ranging and positioning technology is not affected by the environment temperature, heat and can effectively penetrate the medium, effectively solve the problems of laser, infrared detection seriously affected by temperature, invalid when encountering obstacles and false alarm probability, overcome the problems of ultrasonic detection affected by environmental debris reflection, water, ice, soil blockage failure, and higher accuracy. SUMMARY

[0005] In order to solve the above problems of the prior art, the application provides a vehicle collision monitoring method and system in a parking state based on UWB technology, wherein each vehicle is equipped with a UWB chip, the collision risk of the current vehicle in the parking state is detected and monitored through UWB-based radar ranging and positioning technology, and a collision warning signal is generated, so as to realize safety warning before a collision accident occurs, and the collision accident monitoring before the collision accident occurs is triggered based on the collision warning signal, thereby replacing the existing conventional collision-triggered wake-up driving monitoring recording mode, solving the problem that the collision information cannot be completely recorded due to the failure of the current traditional parking monitoring system, effectively reducing the driving risk of the vehicle, and improving the driving safety.

[0006] In a first aspect, the application provides a vehicle collision monitoring method in a parking state based on UWB technology.

[0007] A vehicle collision monitoring method in a parking state based on UWB technology comprises the following steps.

[0008] In the driving state of the current vehicle, the current position, speed and acceleration are acquired in real time, and the UWB radar is used to detect and position the obstacles within a set range around the current vehicle; the obstacles include the surrounding parked vehicles.

[0009] According to the real-time positions of the current vehicle and the obstacles and the real-time speed and acceleration of the current vehicle, it is determined whether the current vehicle and the obstacles are within a safe distance range.

[0010] If it is determined that the current vehicle and the obstacles are not within the safe distance range, the collision safety risk level is determined, the warning information is generated for warning, and the warning information is sent to the surrounding parked vehicles through the UWB technology; after the surrounding parked vehicles receive the warning information, the vehicle control hardware and the driving recorder are woken up, and the collision monitoring and recording are performed.

[0011] In a further technical solution, the current vehicle receives the warning information sent by the surrounding parked vehicles in the stopped state, and wakes up the vehicle control hardware and the driving recorder according to the warning information, and performs the collision monitoring and recording.

[0012] In a further technical solution, the current vehicle performs the warning, which comprises the following steps.

[0013] According to the distance between the current vehicle and the obstacles and the speed and acceleration of the current vehicle, the probability of collision and the severity of collision are calculated, the collision safety risk level is determined, and the warning information is generated.

[0014] According to the collision safety risk level in the warning information, the corresponding warning operation of the warning information is performed.

[0015] Further technical solutions, the collision safety risk level includes two levels, and the pre-warning operation corresponding to each level is:

[0016] When it is judged that the first level of collision safety risk, the current vehicle carries out the in-vehicle voice prompt;

[0017] When it is judged that the second level of collision safety risk, the current vehicle carries out the in-vehicle voice prompt and active braking.

[0018] Further technical solutions, the surrounding parked vehicle receives the pre-warning information, wakes up the vehicle control hardware and the driving recorder to monitor and record the collision, comprising:

[0019] If the collision is monitored within the set time, the recorded collision image is saved, and the collision information and the recorded collision image are sent to the user terminal vehicle management background;

[0020] On the contrary, if the collision is not monitored within the set time, the recorded image is deleted or overwritten.

[0021] Secondly, the application provides a collision monitoring system for a vehicle in a parked state based on UWB technology.

[0022] A collision monitoring system for a vehicle in a parked state based on UWB technology, comprising:

[0023] The UWB vehicle positioning module is used to obtain the current position, speed and acceleration of the current vehicle in the driving state in real time;

[0024] The UWB radar detection module is used to detect and locate the obstacles within a set range around the current vehicle in real time; the obstacles include the surrounding parked vehicles;

[0025] The pre-warning monitoring module is electrically connected with the UWB vehicle positioning module and the UWB radar detection module, and is used to judge whether the current vehicle and the obstacles are within a safe distance range according to the real-time position of the current vehicle and the obstacles and the real-time speed and acceleration of the current vehicle; if it is judged that it is not within the safe distance range, the collision safety risk level is judged, and the pre-warning information is generated; and it is also used to wake up the vehicle control hardware and the driving recorder according to the received pre-warning information;

[0026] The pre-warning information transceiver module is electrically connected with the pre-warning monitoring module, and is used to send the pre-warning information to the surrounding parked vehicles through UWB technology, and receive the pre-warning information sent by the surrounding parked vehicles in real time.

[0027] Further technical solutions, further comprising:

[0028] The collision monitoring module is used to monitor the collision of the current vehicle according to the control signal issued by the vehicle control hardware.

[0029] A driving recorder is used for driving recording of a current vehicle.

[0030] Further technical solutions also include a remote transmission module for communication between the vehicle and the user terminal vehicle management background;

[0031] The collision monitoring module is electrically connected with the remote transmission module and the driving recorder, and the collision monitoring module sends the collision information and the recorded collision image to the user terminal vehicle management background or deletes or covers the recorded image of the driving recorder according to the collision monitoring result through the remote transmission module.

[0032] In a third aspect, the present application also provides an electronic device, which comprises a memory and a processor, and computer instructions stored in the memory and running on the processor, and when the computer instructions are run by the processor, the steps of the method in the first aspect are completed.

[0033] In a fourth aspect, the present application also provides a computer readable storage medium for storing computer instructions, and when the computer instructions are executed by the processor, the steps of the method in the first aspect are completed.

[0034] The above one or more technical solutions have the following beneficial effects:

[0035] 1. The present application provides a vehicle collision monitoring method and system based on UWB technology in a stopped state, for each vehicle monitored, a UWB chip is carried, through UWB-based radar ranging and positioning technology, the collision risk of the current vehicle in the stopped state with the surrounding obstacles is detected and monitored, and a collision warning signal is generated, so as to realize safety warning before the collision accident occurs, effectively reducing the driving risk of the vehicle; at the same time, based on the collision warning signal triggering wake-up, the UWB technology is used to receive and transmit the warning signal to wake up the vehicle control hardware and the driving recorder for collision monitoring and recording, realizing driving monitoring before the collision accident occurs, through this way, instead of the existing conventional collision triggering wake-up driving monitoring recording mode, the problem that the collision information cannot be recorded completely due to the recording of the fault of the current traditional parking monitoring system is solved, and the driving safety is improved.

[0036] 2. In the present application, according to the real-time position of the current vehicle and the obstacle and the real-time speed and acceleration of the current vehicle, it is judged whether the current vehicle and the obstacle are within a safe distance range, and then the collision safety risk level is determined, different warning operations are performed according to the different levels, which can effectively remind the driver to take active operation, and can be passively braked when necessary, to avoid the occurrence of collision, and effectively improve the driving safety. BRIEF DESCRIPTION OF DRAWINGS

[0037] The accompanying drawings, which form a part of this specification, are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification. The embodiments of the application, and their

[0038] Figure 1 The figure is a whole flow chart of the collision monitoring method of the vehicle in the stop state based on the UWB technology in the embodiment of the application.

[0039] Figure 2 The figure is a structure schematic diagram of the collision monitoring system of the vehicle in the stop state based on the UWB technology in the embodiment of the application. DETAILED DESCRIPTION

[0040] It should be noted that the following detailed description is exemplary only and is intended to provide further description of the application, and is not intended to limit the exemplary embodiments according to the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the application belongs. In addition, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of features, steps, operations, devices, components and / or combinations thereof.

[0041] Embodiment one

[0042] To solve the problem that the collision information cannot be recorded completely due to the failure of the traditional parking monitoring system, the embodiment provides a collision monitoring method of the vehicle in the stop state based on the UWB technology. The radar ranging and positioning technology of the UWB is considered, the UWB chip is carried on each vehicle, the collision risk of the current vehicle in the stop state is detected and monitored through the UWB radar ranging and positioning, the collision warning signal is generated, and the driving record before the collision is started according to the collision warning signal, which can record the situation before the collision occurs, so as to improve the safety of driving. The collision monitoring method of the vehicle in the stop state based on the UWB technology provided in the embodiment specifically includes the following steps:

[0043] Step S1, in the driving state of the current vehicle, the current position, speed and acceleration are acquired in real time, and the obstacles within the set range around the current vehicle are detected and positioned in real time by using the UWB radar; the obstacles include the surrounding vehicles in the stop state;

[0044] Step S2, according to the real-time position of the current vehicle and the obstacles and the real-time speed and acceleration of the current vehicle, it is judged whether the current vehicle and the obstacles are within the safe distance range;

[0045] Step S3, if it is judged that it is not within the safe distance range, the collision safety risk level is judged, and the pre-warning information is generated for pre-warning, and the pre-warning information is sent to the surrounding parked vehicles through the UWB technology, and the surrounding parked vehicles receive the pre-warning information to wake up the vehicle control hardware and the driving recorder to monitor and record the collision.

[0046] The collision monitoring method for the vehicle in the parked state based on the UWB technology proposed in the embodiment is described in more detail through the following contents.

[0047] As shown in Figure 1 Step S1, in the driving state of the current vehicle, the current position, speed (including speed size and direction), and acceleration (including acceleration size and direction) of the vehicle are obtained in real time based on the UWB chip mounted in the vehicle, and the obstacles within the set range around the current vehicle are detected and positioned in real time by the UWB radar, wherein the obstacles include surrounding parked vehicles and other moving objects, stationary objects, etc.

[0048] In step S2, whether the current vehicle and the obstacles are within the safe distance range is judged according to the real-time positions of the current vehicle and the obstacles and the real-time speed and acceleration of the current vehicle. Specifically, whether the current vehicle and the obstacles are within the safe distance range includes: first, the distance between the current vehicle and the obstacles is determined according to the real-time positions of the current vehicle and the obstacles, which is the safe distance range; then, the brake distance is calculated according to the real-time speed and acceleration of the current vehicle; finally, the brake distance is compared with the safe distance range, if the brake distance is within the safe distance range, no treatment is made and the monitoring is continued, otherwise, once the set safe distance range is exceeded, the pre-warning is triggered and step S3 is executed.

[0049] In step S3, when it is judged that it is not within the safe distance range, the pre-warning is triggered, at this time, the collision safety risk level is judged and determined according to the real-time positions of the current vehicle and the obstacles and the real-time speed and acceleration of the current vehicle, and the pre-warning information is generated for pre-warning, and according to the collision safety risk level in the pre-warning information, the pre-warning operation corresponding to the level is executed.

[0050] Specifically, the safe distance range in step S2 above considers whether there is a possibility of collision, once it is confirmed that the collision will occur, step S3 is executed, that is, the collision safety risk is evaluated. The collision safety risk is the probability of collision and the severity of collision which can be calculated and judged according to the speed and acceleration of the current vehicle and the distance between the current vehicle and the obstacles, and then the collision safety risk can be divided and determined according to the collision probability and the collision severity, and each collision safety risk level can correspond to take corresponding measures, such as deceleration, braking, etc., so as to eliminate the collision risk or reduce the collision loss.

[0051] In this embodiment, the collision safety risk level is divided into two levels, and the corresponding pre-warning operation of each level is:

[0052] When the first-level collision safety risk is determined, the current vehicle performs in-vehicle voice reminding, at this time, the collision can be avoided by reducing speed, changing lane (i.e., changing driving direction), etc.

[0053] When the second-level collision safety risk is determined, the current vehicle performs in-vehicle voice reminding and active braking, at this time, emergency braking, active braking, emergency lane changing, etc. are needed to reduce the collision risk or reduce the collision loss.

[0054] In the above manner, the collision safety risk pre-warning is started, the driver is reminded of the existence of the collision risk, the whole vehicle horn or voice reminding is combined to remind the driver that there is an obstacle on the roadside and there is a collision risk; if necessary, active braking can also be used to avoid collision.

[0055] While the current vehicle generates pre-warning information for its own pre-warning, the pre-warning information is also sent to the surrounding parked vehicles through UWB technology. After receiving the pre-warning information, the surrounding parked vehicles wake up the vehicle control hardware and the driving recorder to perform collision monitoring and recording. Among them, the vehicle control hardware sends control signals to the collision monitoring module (which includes a collision sensor) according to the pre-warning information, so as to detect whether a collision occurs; the parked vehicle control hardware and the driving recorder are awakened synchronously, the driving recorder is turned on and recording is performed, and recording is performed before the accident occurs, so that the whole process can be recorded completely.

[0056] Further, after receiving the pre-warning information, the surrounding parked vehicles wake up the vehicle control hardware and the driving recorder to perform collision monitoring and recording. If a collision is monitored within a set time, the recorded collision video is saved, and the collision information and the recorded collision video are sent to the user-end vehicle management background through the Internet of Vehicles system in a timely manner for information notification. Otherwise, if no collision is monitored within the set time, the recorded video is deleted or overwritten, and the vehicle control hardware and the like enter the sleep mode again. Preferably, in the case where no collision is monitored within the set time, the recorded video can be retained or directly deleted or overwritten according to the user's setting information of the system.

[0057] As another implementation, for the current vehicle, in a stopped state, real-time pre-warning information sent by the surrounding parked vehicles is received, and the vehicle control hardware and the driving recorder are awakened according to the pre-warning information to perform collision monitoring and recording.

[0058] Embodiment Two

[0059] The embodiment provides a collision monitoring system for a vehicle in a parked state based on UWB technology, which is as shown in Figure 2As shown, including UWB vehicle positioning module, UWB radar detection module, early warning monitoring module, early warning information transceiver module, collision monitoring module and car recorder, wherein:

[0060] UWB vehicle positioning module, for real-time acquisition of the current position, speed and acceleration of the current vehicle in driving state;

[0061] UWB radar detection module, for real-time detection of obstacles within a set range around the current vehicle and positioning; the obstacles include surrounding parked vehicles;

[0062] Early warning monitoring module, electrically connected with UWB vehicle positioning module and UWB radar detection module, for judging whether the current vehicle and the obstacles are within a safe distance range according to the real-time position of the current vehicle and the obstacles and the real-time speed and acceleration of the current vehicle; if it is judged that it is not within the safe distance range, the collision safety risk level is judged and early warning information is generated; also for awakening vehicle control hardware and car recorder according to received early warning information;

[0063] Early warning information transceiver module, electrically connected with early warning monitoring module, for sending early warning information to surrounding parked vehicles through UWB technology, and receiving early warning information sent by surrounding parked vehicles in real time;

[0064] Collision monitoring module, for collision monitoring of the current vehicle according to the control signal issued by the vehicle control hardware;

[0065] Car recorder, for driving recording of the current vehicle.

[0066] Specifically, through UWB vehicle positioning module and UWB radar detection module, the current position, speed and acceleration of the current vehicle in driving state are acquired in real time, and obstacles (including surrounding parked vehicles) within a set range around the current vehicle are detected in real time and positioned; then, early warning monitoring module judges according to the acquired and detected information, judges whether the current vehicle and the obstacles are within a safe distance range, and judges the collision safety risk level, to generate early warning information, on the one hand, according to the early warning information and the collision safety risk level, the current vehicle itself is warned, on the other hand, through early warning information transceiver module, early warning information is sent to surrounding parked vehicles through UWB technology, surrounding parked vehicles awaken vehicle control hardware and car recorder according to received early warning information, vehicle control hardware (including vehicle controller, etc.) issues control signal, controls collision monitoring module (including collision sensor) to perform collision monitoring, and starts car recorder to perform driving recording, so as to realize driving monitoring before collision accident occurs, solve the problem that collision information cannot be recorded completely due to recording of the current traditional parking monitoring system after failure, and improve driving safety.

[0067] Further, the system provided in the embodiment further comprises a remote transmission module for communication between the vehicle and the user terminal vehicle management background. Specifically, the collision monitoring module is electrically connected with the remote transmission module and the driving recorder. The collision monitoring module generates a collision instruction according to the collision monitoring result, that is, a collision information transmission instruction is generated when a collision is monitored. The remote transmission module receives the instruction and transmits the collision information and the recorded collision image to the user terminal vehicle management background. When it is monitored that no collision occurs, an update instruction is generated. The driving recorder deletes or covers the recorded image according to the update instruction.

[0068] Embodiment three

[0069] The embodiment provides an electronic device, comprising a memory and a processor, and computer instructions stored in the memory and running on the processor. When the computer instructions are run by the processor, the steps in the collision monitoring method in the vehicle stop state based on the UWB technology are completed.

[0070] Embodiment four

[0071] The embodiment also provides a computer readable storage medium for storing computer instructions. When the computer instructions are executed by the processor, the steps in the collision monitoring method in the vehicle stop state based on the UWB technology are completed.

[0072] The steps and methods in the above embodiments two to four correspond to the method embodiment one. The specific embodiments can be referred to the related description part of the embodiment one. The term "computer readable storage medium" should be understood as including a single medium or multiple media of one or more instruction sets; and should also be understood as including any medium capable of storing, encoding or carrying instruction sets for execution by a processor and causing the processor to perform any method in the present application.

[0073] Those skilled in the art should understand that the above modules or steps of the present application can be realized by a general computer device. Alternatively, they can be realized by program codes executable by a computing device, so that they can be stored in a storage device for execution by a computing device, or they can be respectively manufactured into individual integrated circuit modules, or a plurality of modules or steps among them can be manufactured into a single integrated circuit module. The present application is not limited to any specific combination of hardware and software.

[0074] The above description is only the preferred embodiments of the present application, and the specific embodiments of the present application are described in combination with the drawings, but are not a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications or changes made by those skilled in the art on the basis of the technical solutions of the present application without creative labor are still within the protection scope of the present application.

Claims

1. A collision detection method based on UWB technology for vehicles in a stationary state, characterized in that, include: While the vehicle is in motion, its current position, speed, and acceleration are acquired in real time, and UWB radar is used to detect and locate obstacles within a set range around the vehicle in real time. The obstacles include parked vehicles in the vicinity; Based on the real-time position of the vehicle and obstacles, as well as the real-time speed and acceleration of the vehicle, determine whether the vehicle and obstacles are within a safe distance range. If it is determined that the vehicle is not within a safe distance, the collision safety risk level is determined and a warning message is generated. At the same time, the warning message is sent to the surrounding parked vehicles via UWB technology. After receiving the warning message, the surrounding parked vehicles will activate their vehicle control hardware and driving recorders to perform collision monitoring and recording. When the vehicle is stationary, it receives real-time warning information from surrounding parked vehicles and activates the vehicle control hardware and driving recorder based on the warning information to perform collision monitoring and recording. The current vehicle is given a warning, including: Based on the current distance between the vehicle and the obstacle, as well as the vehicle's current speed and acceleration, the probability and severity of a collision are calculated, the collision safety risk level is determined, and a warning message is generated. Based on the collision safety risk level in the warning information, execute the warning operation corresponding to the corresponding level; The collision safety risk level includes two levels, and the corresponding warning operation for each level is as follows: When a level 1 collision safety risk is assessed, the vehicle will issue an in-vehicle voice alert. When a level 2 collision safety risk is assessed, the vehicle will issue an in-vehicle voice warning and automatically apply the brakes.

2. The collision detection method based on UWB technology for vehicles in a stationary state as described in claim 1, characterized in that, After receiving the warning information, surrounding parked vehicles activate their vehicle control hardware and dashcams to perform collision detection and recording, including: If a collision is detected within the set time, the recorded collision image will be saved, and the collision information and the recorded collision image will be sent to the user's vehicle management backend. Conversely, if no collision is detected within the set time, the recorded footage will be deleted or overwritten.

3. A collision detection system for a stationary vehicle based on UWB technology, employing the collision detection method for a stationary vehicle based on UWB technology as described in any one of claims 1-2, characterized in that, include: The UWB vehicle positioning module is used to obtain the current position, speed, and acceleration of the vehicle in real time while it is in motion. The UWB radar detection module is used to detect and locate obstacles within a set range around the current vehicle in real time. The obstacles include parked vehicles in the vicinity; The early warning monitoring module is electrically connected to the UWB vehicle positioning module and the UWB radar detection module. It is used to determine whether the current vehicle and obstacles are within a safe distance range based on the real-time position of the current vehicle and obstacles, as well as the real-time speed and acceleration of the current vehicle. If it is determined that they are not within a safe distance range, the collision safety risk level is determined and an early warning message is generated. It is also used to wake up the vehicle control hardware and driving recorder based on the received warning information; The early warning information transceiver module is electrically connected to the early warning monitoring module. It is used to send early warning information to surrounding parked vehicles via UWB technology and to receive early warning information sent by surrounding parked vehicles in real time.

4. The collision monitoring system based on UWB technology in a stationary vehicle state as described in claim 3, characterized in that it further... include: The collision detection module is used to perform collision detection on the current vehicle based on the control signals sent by the vehicle control hardware. A dashcam is used to record the driving of a vehicle.

5. The collision monitoring system based on UWB technology in a stationary vehicle state as described in claim 4, characterized in that, It also includes a remote transmission module for communication between the vehicle and the user's vehicle management backend; The collision monitoring module is electrically connected to the remote transmission module and the dashcam. Based on the collision monitoring results, the collision monitoring module sends the collision information and the recorded collision images to the user's vehicle management backend through the remote transmission module, or deletes or overwrites the images recorded by the dashcam.

6. An electronic device, characterized in that, It includes a memory and a processor, as well as computer instructions stored in the memory and running on the processor, which, when executed by the processor, complete the steps of a collision monitoring method based on UWB technology in a stationary state as described in any one of claims 1-2.

7. A computer-readable storage medium, characterized in that, Used to store computer instructions, which, when executed by a processor, complete the steps of a collision monitoring method based on UWB technology in a stationary state as described in any one of claims 1-2.

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