Electric vehicle door anti-collision method and system

Abstract

The invention discloses an anti-collision method and system for an electric vehicle door, and relates to the technical field of electric vehicle door protection.The anti-collision method comprises the steps that an ultrasonic radar is installed on the lower edge of the electric vehicle door, and before the electric vehicle door is opened, the radar emits ultrasonic waves and detects the distance between an obstacle and the radar; based on the distance between the detected obstacle and the radar, collision risk analysis is carried out, and the collision risk probability is calculated; and based on the collision risk probability, recommending countermeasures. The ultrasonic radar technology is utilized, the ultrasonic radar is installed on the lower edge of the electric vehicle door, surrounding obstacles can be actively detected before the electric vehicle door is opened, the ultrasonic radar monitors the distance between the obstacles and the radar in real time by transmitting ultrasonic signals, and therefore the distance between the obstacles and the electric vehicle door is obtained; the system can carry out collision risk analysis, calculate the collision risk probability and recommend corresponding countermeasures according to the calculation result, so that the safety of the electric vehicle in the using process is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vehicle door protection, and in particular to an electric vehicle door anti-collision method and system. Background Art

[0002] With the popularization of electric vehicles and the continuous development of technology, the intelligence and safety of vehicles have become the focus of consumers' attention, especially the anti-collision function of electric doors. As an important part of vehicle safety, it can effectively reduce the risk of collision caused by opening and closing doors and improve users' safety experience.

[0003] Traditional electric doors often lack effective collision warning systems during the opening process, which means that drivers and passengers may not be able to detect surrounding obstacles in time when opening the door, leading to collisions, especially in urban environments where pedestrians and other vehicles appear frequently. In this case, electric doors that lack real-time monitoring and response mechanisms not only threaten the safety of passengers, but may also cause damage to the vehicle itself and economic losses. Summary of the invention

[0004] In order to solve the above technical problems, a method and system for preventing collision of electric vehicle doors are provided. This technical solution solves the above problems.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is: An anti-collision method for an electric door, the anti-collision method comprising: An ultrasonic radar is installed at the lower edge of the electric door. Before the electric door is opened, the radar emits ultrasonic waves to detect the distance between the obstacle and the radar. Based on the distance between the detected obstacle and the radar, the distance from the obstacle to the electric door is obtained, and based on the distance from the obstacle to the electric door, a collision risk analysis is performed to calculate the collision risk probability; Based on the collision risk probability, countermeasures are recommended. When the collision risk probability is greater than the safety threshold, the electric door continues to be opened. When the collision risk probability is less than or equal to the safety distance, a stop signal is sent to control the drive motor of the electric door to stop.

[0006] Preferably, the ultrasonic radar is installed at the lower edge of the electric door, and before the electric door is opened, the radar emits ultrasonic waves, and detecting the distance between the obstacle and the radar specifically includes: Install the ultrasonic radar at the lower edge of the electric door, ensuring that it covers the front and sides of the door opening area; Before the electric door is opened, the ultrasonic radar starts monitoring the environment by emitting ultrasonic signals with a frequency between 40kHz and 70kHz; The ultrasonic signal is reflected back after encountering an obstacle, and the radar system sensor receives the echo signal; Record the time from the transmission to the reception of the ultrasonic signal, measure the time interval, and calculate the distance between the obstacle and the radar. The distance calculation formula is:

[0007] In the formula, is the distance from the obstacle to the radar, is the speed of sound waves in air, It is the time required for ultrasonic signal to be transmitted and received; Convert the distance between the obstacle and the radar to the distance between the obstacle and the electric door.

[0008] Preferably, the detecting the distance between the obstacle and the radar, acquiring the distance from the obstacle to the electric door, performing collision risk analysis based on the distance from the obstacle to the electric door, and calculating the collision risk probability specifically include: Get the distance from the obstacle to the electric door; Based on the distance from the obstacle to the electric door, the data acquired by the radar is transmitted to the control system of the electric vehicle in real time, and a collision risk analysis model is established. Based on the collision risk analysis model, the collision risk is analyzed to determine whether the collision risk is high; Based on the analysis results of collision risk, a collision risk probability calculation model is established to calculate the collision risk probability.

[0009] Preferably, based on the distance from the obstacle to the electric door, the data acquired by the radar is transmitted to the control system of the electric vehicle in real time, a collision risk analysis model is established, and the collision risk analysis based on the collision risk analysis model specifically includes: The radar sensor continuously collects data, including the distance and relative speed of obstacles, and transmits the distance and relative speed obtained by the radar to the control system of the electric vehicle in real time based on wireless communication technology; The actual distance to the electric door and the preset safety distance are used as model parameters to establish a collision risk analysis model to determine whether the collision risk is high. The collision risk analysis model expression is:

[0010] In the formula, For static risk, is the actual distance from the electric vehicle door to the detected obstacle, is the preset safety distance value; If the distance between the obstacle and the electric door is less than the safety threshold, the collision risk is considered high and the collision risk probability is calculated. If the distance between the obstacle and the electric door is greater than or equal to the safety threshold, the collision risk is considered low.

[0011] Preferably, the calculation of the collision risk probability specifically includes: Calculate the approach time to the obstacle, where the approach time calculation formula is:

[0012] In the formula, For the encounter time, is the distance from the obstacle to the electric door, is the relative speed; The collision probability is calculated based on the probability of obstacle appearance and relative speed. The collision probability calculation formula is:

[0013] In the formula, is the collision probability, is the probability of obstacle appearing, is the distance from the obstacle to the electric door, is the attenuation factor, is the base of natural logarithms; The approach time is combined with the collision probability to form the final risk probability, where the final risk probability calculation formula is:

[0014]

[0015] In the formula, is the final risk probability, is the collision probability, is the risk adjustment factor, is the risk adjustment factor parameter, is the base of natural logarithms, For the encounter time; Judgment based on final risk probability and set threshold: If the final risk probability is greater than the set threshold, the risk status is high, if the final risk probability is less than or equal to the set threshold, the risk status is low, if the risk status is "high".

[0016] Preferably, the recommending of countermeasures based on the collision risk probability, when the collision risk probability is greater than the safety threshold, continuing to open the electric door, and when the collision risk probability is less than or equal to the safety distance, sending a stop signal to control the driving motor of the electric door to stop specifically includes: When the risk status is high, continue to open the electric door to ensure that the electric door opening operation is not interrupted. If the electric door is opening, keep it open; When the risk status is low, a stop signal is issued to control the drive motor of the electric door to stop, and a stop command is sent to the drive motor of the electric door through the control system to immediately stop the door from opening; Monitor obstacles and vehicle status in real time, update obstacle location, vehicle speed and other information in real time, and dynamically calculate collision risk probability; In actual use, the safety threshold is regularly calibrated according to user needs, vehicle type and environmental characteristics; When a sensor fails or data is abnormal, a redundant sensor system is used for detection to ensure that the calculation of the collision risk probability is not affected. If the data is abnormal, the system enters emergency mode and suspends the opening and closing operation of the electric door until the sensor resumes normal operation. In the event of an emergency, including a malfunction of the electric door and an unforeseen risk of collision, the system issues an emergency stop command and stops the electric door drive motor.

[0017] An anti-collision system for an electric door, the anti-collision system comprising: Ultrasonic detection module: An ultrasonic radar is installed at the lower edge of the electric door. Before the electric door is opened, the radar emits ultrasonic waves to detect the distance between the obstacle and the radar. Collision risk analysis module: The collision risk analysis module is electrically connected to the ultrasonic detection module, and is used to obtain the distance from the obstacle to the electric door based on the distance between the obstacle and the radar, perform collision risk analysis based on the distance from the obstacle to the electric door, and calculate the collision risk probability; Motor control module: The motor control module is electrically connected to the collision risk analysis module. The motor control module is used to recommend countermeasures based on the collision risk probability. When the collision risk probability is greater than the safety threshold, the electric door continues to be opened. When the collision risk probability is less than or equal to the safety distance, a stop signal is sent to control the drive motor of the electric door to stop.

[0018] Preferably, the ultrasonic detection module comprises: Ultrasonic radar start unit: Before the electric door is opened, the ultrasonic radar starts to monitor the environment by emitting ultrasonic signals. The ultrasonic signals are reflected back after encountering obstacles, and the radar system sensor receives the echo signals. Distance calculation unit: records the time from the transmission to the reception of ultrasonic signals, measures the time interval, and calculates the distance between the obstacle and the radar; Distance conversion unit: converts the distance between the obstacle and the radar into the distance between the obstacle and the electric door.

[0019] Preferably, the collision risk analysis module includes: Data acquisition unit: obtains the distance from the obstacle to the electric door; Risk analysis model building unit: Based on the distance from the obstacle to the electric door, the data acquired by the radar is transmitted to the control system of the electric vehicle in real time, a collision risk analysis model is established, and the collision risk is analyzed based on the collision risk analysis model to determine whether the collision risk is high; Risk probability calculation unit: Based on the analysis results of collision risk, a collision risk probability calculation model is established to calculate the collision risk probability.

[0020] Preferably, the motor control module comprises: Risk state judgment unit: when the risk state is high, the electric door continues to be opened to ensure that the opening operation of the electric door will not be interrupted. If the electric door is opening, it will remain open. When the risk state is low, a stop signal is issued to control the drive motor of the electric door to stop. A stop command is sent to the drive motor of the electric door through the control system to immediately stop the opening action of the door. Vehicle status monitoring unit: monitors obstacles and vehicle status in real time, updates obstacle location, vehicle speed and other information in real time, and dynamically calculates collision risk probability; Abnormal detection unit: When the sensor fails or the data is abnormal, a redundant sensor system is used for detection to ensure that the calculation of the collision risk probability is not affected. If the data is abnormal, the emergency mode is entered and the opening and closing operations of the electric door are suspended, waiting for the sensor to resume normal operation.

[0021] Compared with the prior art, the present invention has the following beneficial effects: The present invention proposes to use ultrasonic radar technology to install an ultrasonic radar on the lower edge of the electric door, which can actively detect surrounding obstacles before the electric door is opened. The ultrasonic radar monitors the distance between the obstacle and the radar in real time by emitting ultrasonic signals, thereby obtaining the distance from the obstacle to the electric door. Based on this data, the system can perform collision risk analysis, calculate the collision risk probability, and recommend corresponding countermeasures based on the calculation results, making the electric vehicle safer during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a flow chart of the steps of the present invention; Figure 2 It is a system framework diagram of the present invention. DETAILED DESCRIPTION

[0023] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0024] Reference Figure 1 As shown, an anti-collision method for an electric door, the anti-collision method comprises: An ultrasonic radar is installed at the lower edge of the electric door. Before the electric door is opened, the radar emits ultrasonic waves to detect the distance between the obstacle and the radar. Based on the distance between the detected obstacle and the radar, the distance from the obstacle to the electric door is obtained, and based on the distance from the obstacle to the electric door, a collision risk analysis is performed to calculate the collision risk probability; Based on the collision risk probability, countermeasures are recommended. When the collision risk probability is greater than the safety threshold, the electric door continues to be opened. When the collision risk probability is less than or equal to the safety distance, a stop signal is sent to control the drive motor of the electric door to stop.

[0025] The ultrasonic radar is installed at the lower edge of the electric door. Before the electric door is opened, the radar emits ultrasonic waves to detect the distance between the obstacle and the radar. Specifically, the following steps are performed: Install the ultrasonic radar at the lower edge of the electric door, ensuring that it covers the front and sides of the door opening area; Before the electric door is opened, the ultrasonic radar starts monitoring the environment by emitting ultrasonic signals with a frequency between 40kHz and 70kHz; The ultrasonic signal is reflected back after encountering an obstacle, and the radar system sensor receives the echo signal; Record the time from the transmission to the reception of the ultrasonic signal, measure the time interval, and calculate the distance between the obstacle and the radar. The distance calculation formula is:

[0026] In the formula, is the distance from the obstacle to the radar, is the speed of sound waves in air, It is the time required for ultrasonic signal to be transmitted and received; Convert the distance between the obstacle and the radar to the distance between the obstacle and the electric door.

[0027] The method of obtaining the distance from the obstacle to the electric door based on the distance between the obstacle and the radar, performing collision risk analysis based on the distance from the obstacle to the electric door, and calculating the collision risk probability specifically includes: Get the distance from the obstacle to the electric door; Based on the distance from the obstacle to the electric door, the data acquired by the radar is transmitted to the control system of the electric vehicle in real time, and a collision risk analysis model is established. Based on the collision risk analysis model, the collision risk is analyzed to determine whether the collision risk is high; Based on the analysis results of collision risk, a collision risk probability calculation model is established to calculate the collision risk probability.

[0028] Based on the distance from the obstacle to the electric door, the data acquired by the radar is transmitted to the control system of the electric vehicle in real time, and a collision risk analysis model is established. The collision risk analysis based on the collision risk analysis model specifically includes: The radar sensor continuously collects data, including the distance and relative speed of obstacles, and transmits the distance and relative speed obtained by the radar to the control system of the electric vehicle in real time based on wireless communication technology; The actual distance to the electric door and the preset safety distance are used as model parameters to establish a collision risk analysis model to determine whether the collision risk is high. The collision risk analysis model expression is:

[0029] In the formula, For static risk, is the actual distance from the electric vehicle door to the detected obstacle, is the preset safety distance value; If the distance between the obstacle and the electric door is less than the safety threshold, the collision risk is considered high and the collision risk probability is calculated. If the distance between the obstacle and the electric door is greater than or equal to the safety threshold, the collision risk is considered low.

[0030] The calculation of the collision risk probability specifically includes: Calculate the approach time to the obstacle, where the approach time calculation formula is:

[0031] In the formula, For the encounter time, is the distance from the obstacle to the electric door, is the relative speed; The collision probability is calculated based on the probability of obstacle appearance and relative speed. The collision probability calculation formula is:

[0032] In the formula, is the collision probability, is the probability of obstacle appearing, is the distance from the obstacle to the electric door, is the attenuation factor, is the base of natural logarithms; The approach time is combined with the collision probability to form the final risk probability, where the final risk probability calculation formula is:

[0033]

[0034] In the formula, is the final risk probability, is the collision probability, is the risk adjustment factor, is the risk adjustment factor parameter, is the base of natural logarithms, For the encounter time; Judgment based on final risk probability and set threshold: If the final risk probability is greater than the set threshold, the risk status is high, if the final risk probability is less than or equal to the set threshold, the risk status is low, if the risk status is "high".

[0035] The recommended countermeasures based on the collision risk probability include: when the collision risk probability is greater than the safety threshold, continuing to open the electric door; when the collision risk probability is less than or equal to the safety distance, sending a stop signal to control the driving motor of the electric door to stop, specifically including: When the risk status is high, continue to open the electric door to ensure that the electric door opening operation is not interrupted. If the electric door is opening, keep it open; When the risk status is low, a stop signal is issued to control the drive motor of the electric door to stop, and a stop command is sent to the drive motor of the electric door through the control system to immediately stop the door from opening; Monitor obstacles and vehicle status in real time, update obstacle location, vehicle speed and other information in real time, and dynamically calculate collision risk probability; In actual use, the safety threshold is regularly calibrated according to user needs, vehicle type and environmental characteristics; When a sensor fails or data is abnormal, a redundant sensor system is used for detection to ensure that the calculation of the collision risk probability is not affected. If the data is abnormal, the system enters emergency mode and suspends the opening and closing operation of the electric door until the sensor resumes normal operation. In the event of an emergency, including a malfunction of the electric door and an unforeseen risk of collision, the system issues an emergency stop command and stops the electric door drive motor.

[0036] Reference Figure 2 As shown, an anti-collision system for an electric door, the anti-collision system comprises: Ultrasonic detection module: An ultrasonic radar is installed at the lower edge of the electric door. Before the electric door is opened, the radar emits ultrasonic waves to detect the distance between the obstacle and the radar. Collision risk analysis module: The collision risk analysis module is electrically connected to the ultrasonic detection module, and is used to obtain the distance from the obstacle to the electric door based on the distance between the obstacle and the radar, perform collision risk analysis based on the distance from the obstacle to the electric door, and calculate the collision risk probability; Motor control module: The motor control module is electrically connected to the collision risk analysis module. The motor control module is used to recommend countermeasures based on the collision risk probability. When the collision risk probability is greater than the safety threshold, the electric door continues to be opened. When the collision risk probability is less than or equal to the safety distance, a stop signal is sent to control the drive motor of the electric door to stop.

[0037] The ultrasonic detection module comprises: Ultrasonic radar start unit: Before the electric door is opened, the ultrasonic radar starts to monitor the environment by emitting ultrasonic signals. The ultrasonic signals are reflected back after encountering obstacles, and the radar system sensor receives the echo signals. Distance calculation unit: records the time from the transmission to the reception of ultrasonic signals, measures the time interval, and calculates the distance between the obstacle and the radar; Distance conversion unit: converts the distance between the obstacle and the radar into the distance between the obstacle and the electric door.

[0038] The collision risk analysis module includes: Data acquisition unit: obtains the distance from the obstacle to the electric door; Risk analysis model building unit: Based on the distance from the obstacle to the electric door, the data acquired by the radar is transmitted to the control system of the electric vehicle in real time, a collision risk analysis model is established, and the collision risk is analyzed based on the collision risk analysis model to determine whether the collision risk is high; Risk probability calculation unit: Based on the analysis results of collision risk, a collision risk probability calculation model is established to calculate the collision risk probability.

[0039] The motor control module comprises: Risk state judgment unit: when the risk state is high, the electric door continues to be opened to ensure that the opening operation of the electric door will not be interrupted. If the electric door is opening, it will remain open. When the risk state is low, a stop signal is issued to control the drive motor of the electric door to stop. A stop command is sent to the drive motor of the electric door through the control system to immediately stop the opening action of the door. Vehicle status monitoring unit: monitors obstacles and vehicle status in real time, updates obstacle location, vehicle speed and other information in real time, and dynamically calculates collision risk probability; Abnormal detection unit: When the sensor fails or the data is abnormal, a redundant sensor system is used for detection to ensure that the calculation of the collision risk probability is not affected. If the data is abnormal, the emergency mode is entered and the opening and closing operations of the electric door are suspended, waiting for the sensor to resume normal operation.

[0040] In summary, the advantages of the present invention are: This method uses ultrasonic radar technology. An ultrasonic radar is installed on the lower edge of the electric door. It can actively detect surrounding obstacles before the electric door is opened. The ultrasonic radar monitors the distance between the obstacle and the radar in real time by emitting ultrasonic signals, thereby obtaining the distance from the obstacle to the electric door. Based on this data, the system can perform collision risk analysis, calculate the collision risk probability, and recommend corresponding countermeasures based on the calculation results. The anti-collision method also establishes a collision risk analysis model, comprehensively considers factors such as the distance and relative speed of obstacles, and dynamically calculates the collision risk probability. When the collision risk probability exceeds the preset safety threshold, the system will send a stop signal to control the drive motor of the electric door to stop the door opening operation. This intelligent anti-collision mechanism can effectively prevent collision accidents caused by opening the door, improve the safety performance of the vehicle, and protect the personal safety of passengers and surrounding pedestrians. In order to enhance the reliability of the system, redundant sensors and anomaly detection mechanisms are designed. When a sensor fails or the data is abnormal, the system can enter the emergency mode in time and suspend the opening and closing operation of the electric door to ensure safety. In this context, the anti-collision technology of electric doors is not only an important part of smart electric vehicles, but also an important development direction of future intelligent transportation systems.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. An anti-collision method for an electric door, characterized in that: Anti-collision methods include: An ultrasonic radar is installed at the lower edge of the electric door. Before the electric door is opened, the radar emits ultrasonic waves to detect the distance between the obstacle and the radar. Based on the distance between the detected obstacle and the radar, the distance from the obstacle to the electric door is obtained, and based on the distance from the obstacle to the electric door, a collision risk analysis is performed to calculate the collision risk probability; Based on the collision risk probability, countermeasures are recommended. When the collision risk probability is greater than the safety threshold, the electric door continues to be opened. When the collision risk probability is less than or equal to the safety distance, a stop signal is sent to control the drive motor of the electric door to stop.

2. The anti-collision method for electric door according to claim 1, characterized in that: The ultrasonic radar is installed at the lower edge of the electric door. Before the electric door is opened, the radar emits ultrasonic waves to detect the distance between the obstacle and the radar. Specifically, the following steps are performed: Install the ultrasonic radar at the lower edge of the electric door, ensuring that it covers the front and sides of the door opening area; Before the electric door is opened, the ultrasonic radar starts monitoring the environment by emitting ultrasonic signals with a frequency between 40kHz and 70kHz; The ultrasonic signal is reflected back after encountering an obstacle, and the radar system sensor receives the echo signal; Record the time from the transmission to the reception of the ultrasonic signal, measure the time interval, and calculate the distance between the obstacle and the radar. The distance calculation formula is: In the formula, is the distance from the obstacle to the radar, is the speed of sound waves in air, It is the time required for ultrasonic signal to be transmitted and received; Convert the distance between the obstacle and the radar to the distance between the obstacle and the electric door.

3. The anti-collision method for electric door according to claim 2, characterized in that: The method of obtaining the distance from the obstacle to the electric door based on the distance between the obstacle and the radar, performing collision risk analysis based on the distance from the obstacle to the electric door, and calculating the collision risk probability specifically includes: Get the distance from the obstacle to the electric door; Based on the distance from the obstacle to the electric door, the data acquired by the radar is transmitted to the control system of the electric vehicle in real time, and a collision risk analysis model is established. Based on the collision risk analysis model, the collision risk is analyzed to determine whether the collision risk is high; Based on the analysis results of collision risk, a collision risk probability calculation model is established to calculate the collision risk probability.

4. The anti-collision method for electric door according to claim 3, characterized in that: Based on the distance from the obstacle to the electric door, the data acquired by the radar is transmitted to the control system of the electric vehicle in real time, and a collision risk analysis model is established. The collision risk analysis based on the collision risk analysis model specifically includes: The radar sensor continuously collects data, including the distance and relative speed of obstacles, and transmits the distance and relative speed obtained by the radar to the control system of the electric vehicle in real time based on wireless communication technology; The actual distance to the electric door and the preset safety distance are used as model parameters to establish a collision risk analysis model to determine whether the collision risk is high. The collision risk analysis model expression is: In the formula, For static risk, is the actual distance from the electric vehicle door to the detected obstacle, is the preset safety distance value; If the distance between the obstacle and the electric door is less than the safety threshold, the collision risk is considered high and the collision risk probability is calculated. If the distance between the obstacle and the electric door is greater than or equal to the safety threshold, the collision risk is considered low.

5. The anti-collision method for electric door according to claim 4, characterized in that: The calculation of the collision risk probability specifically includes: Calculate the approach time to the obstacle, where the approach time calculation formula is: In the formula, For the encounter time, is the distance from the obstacle to the electric door, is the relative speed; The collision probability is calculated based on the probability of obstacle appearance and relative speed, where the collision probability calculation formula is: In the formula, is the collision probability, is the probability of obstacle appearing, is the distance from the obstacle to the electric door, is the attenuation factor, is the base of natural logarithms; The approach time is combined with the collision probability to form the final risk probability, where the final risk probability calculation formula is: In the formula, is the final risk probability, is the collision probability, is the risk adjustment factor, is the risk adjustment factor parameter, is the base of natural logarithms, For the encounter time; Judgment based on final risk probability and set threshold: If the final risk probability is greater than the set threshold, the risk status is high; if the final risk probability is less than or equal to the set threshold, the risk status is low; if the risk status is "high".

6. The anti-collision method for electric door according to claim 5, characterized in that: The recommended countermeasures based on the collision risk probability include: when the collision risk probability is greater than the safety threshold, continuing to open the electric door; when the collision risk probability is less than or equal to the safety distance, sending a stop signal to control the driving motor of the electric door to stop, specifically including: When the risk status is high, continue to open the electric door to ensure that the electric door opening operation is not interrupted. If the electric door is opening, keep it open; When the risk status is low, a stop signal is issued to control the drive motor of the electric door to stop, and a stop command is sent to the drive motor of the electric door through the control system to immediately stop the door from opening; Monitor obstacles and vehicle status in real time, update obstacle location, vehicle speed and other information in real time, and dynamically calculate collision risk probability; In actual use, the safety threshold is regularly calibrated according to user needs, vehicle type and environmental characteristics; When a sensor fails or data is abnormal, a redundant sensor system is used for detection to ensure that the calculation of the collision risk probability is not affected. If the data is abnormal, the system enters emergency mode and suspends the opening and closing operation of the electric door until the sensor resumes normal operation. In the event of an emergency, including a malfunction of the electric door and an unforeseen risk of collision, the system issues an emergency stop command and stops the electric door drive motor.

7. An electric door anti-collision system, characterized in that: The anti-collision system includes: Ultrasonic detection module: An ultrasonic radar is installed at the lower edge of the electric door. Before the electric door is opened, the radar emits ultrasonic waves to detect the distance between the obstacle and the radar. Collision risk analysis module: The collision risk analysis module is electrically connected to the ultrasonic detection module, and is used to obtain the distance from the obstacle to the electric door based on the distance between the obstacle and the radar, perform collision risk analysis based on the distance from the obstacle to the electric door, and calculate the collision risk probability; Motor control module: The motor control module is electrically connected to the collision risk analysis module. The motor control module is used to recommend countermeasures based on the collision risk probability. When the collision risk probability is greater than the safety threshold, the electric door continues to be opened. When the collision risk probability is less than or equal to the safety distance, a stop signal is sent to control the drive motor of the electric door to stop.

8. The anti-collision system for electric door according to claim 7, characterized in that: The ultrasonic detection module comprises: Ultrasonic radar start unit: Before the electric door is opened, the ultrasonic radar starts to monitor the environment by emitting ultrasonic signals. The ultrasonic signals are reflected back after encountering obstacles, and the radar system sensor receives the echo signals. Distance calculation unit: records the time from the transmission to the reception of ultrasonic signals, measures the time interval, and calculates the distance between the obstacle and the radar; Distance conversion unit: converts the distance between the obstacle and the radar into the distance between the obstacle and the electric door.

9. The anti-collision system for electric door according to claim 8, characterized in that: The collision risk analysis module includes: Data acquisition unit: obtains the distance from the obstacle to the electric door; Risk analysis model building unit: Based on the distance from the obstacle to the electric door, the data acquired by the radar is transmitted to the control system of the electric vehicle in real time, a collision risk analysis model is established, and the collision risk is analyzed based on the collision risk analysis model to determine whether the collision risk is high; Risk probability calculation unit: Based on the analysis results of collision risk, a collision risk probability calculation model is established to calculate the collision risk probability.

10. The electric door anti-collision system according to claim 9, characterized in that: The motor control module comprises: Risk state judgment unit: when the risk state is high, the electric door continues to be opened to ensure that the opening operation of the electric door will not be interrupted. If the electric door is opening, it will remain open. When the risk state is low, a stop signal is issued to control the drive motor of the electric door to stop. A stop command is sent to the drive motor of the electric door through the control system to immediately stop the opening action of the door. Vehicle status monitoring unit: monitors obstacles and vehicle status in real time, updates obstacle location, vehicle speed and other information in real time, and dynamically calculates collision risk probability; Abnormal detection unit: When the sensor fails or the data is abnormal, a redundant sensor system is used for detection to ensure that the calculation of the collision risk probability is not affected. If the data is abnormal, the emergency mode is entered and the opening and closing operations of the electric door are suspended, waiting for the sensor to resume normal operation.

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