Automobile door opening anti-collision system

Abstract

The invention relates to an automobile door opening anti-collision system, and relates to the technical field of traffic safety, the automobile door opening anti-collision system comprises a control module, a command module, a limiting device and a first sensing device detecting towards the rear portion of an automobile body, and the command module, the limiting device and the first sensing device are all in communication connection with the control module; the command module is used for detecting whether a person in the vehicle has the intention of opening the corresponding vehicle door or not, and if yes, preparation information is sent to the control module; the first sensing device is used for detecting whether an obstacle exists in a certain range behind the vehicle body or not, and if yes, first obstacle information is sent to the control module; the control module is used for receiving first obstacle information sent by the first sensing device after receiving the preparation information, and sending obstruction information to the limiting device; and the limiting device is used for limiting the opening range of the vehicle door after receiving the obstruction information. The method has the advantages that the occurrence rate of'door opening and killing 'accidents is reduced, and traffic safety is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of traffic safety technology, and in particular to a car door opening anti-collision system. Background Art

[0002] With the continued growth of urban traffic density, "door-opening" accidents have become a significant safety hazard on urban roads. These accidents occur when a vehicle occupant suddenly opens a door while exiting, leaving drivers or pedestrians behind the vehicle with little time to react. This can lead to injuries or even death, severely endangering traffic safety. Summary of the Invention

[0003] In order to reduce the incidence of "door opening kill" accidents and ensure traffic safety, the present application provides a car door opening anti-collision system.

[0004] The present application provides a vehicle door opening anti-collision system that adopts the following technical solutions: A vehicle door opening collision avoidance system includes a control module, a command module, a limiting device, and a first sensing device. The command module, the limiting device, and the first sensing device are all communicatively connected to the control module. The command module and the limiting device are provided on each vehicle door. The command module is used to detect whether the person in the car intends to open the corresponding door, and if so, send a preparation message to the control module; The first sensing device is used to detect whether there is an obstacle behind the vehicle, and if so, sends first obstacle information to the control module; The control module is used to receive the preparation information sent by the command module, and after receiving the preparation information, receive the first obstacle information sent by the first sensing device; The control module is further configured to, after receiving the first obstacle information sent by the first sensing device, send obstruction information to the restriction device on the vehicle door corresponding to the command module that sent the preparation information; The limiting device is used to receive the obstruction information sent by the control module, and after receiving the obstruction information, limit the opening range of the vehicle door.

[0005] By adopting the above technical solution, when the command module detects that the person in the car intends to open the door, the command module sends a preparation message to the control module; at this time, the control module can receive the information of the first sensing device. If the first sensing device detects that there is an obstacle behind the vehicle, the information received by the control module is the first obstacle information; at this time, the control module sends an obstruction information to the limiting device of the corresponding door, the limiting device responds, and limits the opening range of the door; in this way, the door is limited to open widely, which can avoid the situation where the rear vehicles or pedestrians do not have time to avoid the opening door due to the rash opening of the door by the people in the car, thereby reducing the incidence of "door opening kill" accidents and ensuring traffic safety.

[0006] Preferably, the limiting device limits the opening range of the vehicle door to 10-20 degrees.

[0007] By adopting the above technical solution, when the opening range of the car door is within the range of 10-20 degrees, the deflection of the car door and the extension of the door frame are small, which is within a relatively safe range. In addition, the range of 10-20 degrees is enough for a door gap to appear between the car door and the door frame of the vehicle body. Through the door gap, it is possible to manually judge whether there is an obstacle within a certain range behind the door without opening the window and sticking the head out of the window to observe. Sticking the head out of the window to observe is risky.

[0008] Preferably, the limiting device includes an electric latch, which is fixed on the vehicle door, and a retaining groove is provided on the door frame of the vehicle body. The output end of the electric latch can be extended into the retaining groove, and the output end of the electric latch can be abutted against the side wall of the retaining groove in the retaining groove; the electric latch is communicatively connected with the control module, and the electric latch is used to receive obstruction information sent by the control module, and after receiving the obstruction information, the output end extends into the retaining groove.

[0009] By adopting the above technical solution, when the control module receives the first obstacle information from the first sensing device, it sends the obstruction information to the electric bolt; at this time, the electric bolt responds, and the output end of the electric bolt extends outward and enters the retaining groove on the vehicle door frame; in this state, the output end of the electric bolt cannot escape from the retaining groove and can only move within the retaining groove. Once the output end of the electric bolt abuts against the side wall of the retaining groove, it means that the vehicle door has been opened to the maximum extent under the condition of restricted opening range and cannot be opened further; at the same time, because the electric bolt is extended to work after receiving the obstruction information, it will not interfere with the opening of the vehicle door under normal circumstances, thereby ensuring the convenience of daily use of the vehicle.

[0010] Preferably, the automobile door opening anti-collision system also includes a second sensing device, which is provided on each vehicle door and is communicatively connected to the control module; the second sensing device is used to detect whether there is an obstacle within a certain range behind the vehicle door, and if not, sends unlocking information to the control module; the control module is used to receive the unlocking information sent by the second sensing device after receiving the first obstacle information, and send opening information to the corresponding electric bolt when receiving the unlocking information; the electric bolt is used to receive the opening information sent by the control module and retract the output end when receiving the opening information.

[0011] By adopting the above technical solution, when the first sensing device detects the existence of an obstacle behind the vehicle body, the electric bolt extends and limits the opening range of the door, and the second sensing device further detects a certain range behind the door; if there is no obstacle within a certain range behind the door at this time, it means that the obstacle detected by the first sensing device is not on the side of the opened door, and there is no safety hazard in opening the door on this side. At this time, the second sensing device sends an unlocking message to the control module. After receiving the unlocking message, the control module sends an opening message to the corresponding electric bolt, causing the electric bolt to retract the output end and automatically lift the restriction on the door.

[0012] Preferably, the first obstacle information includes the position information of the obstacle; the second sensing device is used to detect whether there is an obstacle behind the vehicle door, and if so, send second obstacle information to the control module, the second obstacle information including the position information of the obstacle; the control module is used to receive the first obstacle information and the second obstacle information, and based on the position information of the obstacle in the first obstacle information and the second obstacle information, generate a coordinate system with the opened vehicle door as the origin and the position of the obstacle as the mark point, and based on the position change of the mark point in the coordinate system, determine the moving direction of the mark point, whether it is approaching the origin of the coordinate system, and if not, send opening information to the electric bolt.

[0013] By adopting the above technical solution, the control module can judge the moving direction of the obstacle based on the change in the position of the marking point in the coordinate system. When it is determined that the marking point is not approaching the origin of the coordinate system, it means that the obstacle is not approaching the opened door. At this time, opening the door will not collide with the obstacle behind. The control module sends an opening message to the electric bolt, and the electric bolt retracts the output end to release the restriction on the door.

[0014] Preferably, the second sensing device is fixed on the inner side of the vehicle door, or embedded on a side of the vehicle door away from the rotation center.

[0015] By adopting the above technical solution, the second sensing device is fixed on the inner side of the vehicle door or embedded on the side of the vehicle door away from the rotation center. When the vehicle door is restricted from opening, the second sensing device detects the rear of the vehicle door through the door gap or directly on the slightly opened vehicle door. Firstly, the second sensing device can be avoided as much as possible from direct impact and damage by the external environment, thereby extending the service life of the second sensing device and reducing the probability of failure caused by external force collision, scratches, etc. Secondly, the relatively closed and stable environment on the side or inside of the vehicle door can reduce the influence of external interference on the detection accuracy of the sensing device. Thirdly, when the vehicle door is closed, the second sensing device cannot be seen from the outside of the vehicle body, thereby ensuring the aesthetic appearance of the vehicle door.

[0016] Preferably, an unlocking switch corresponding to the electric bolt is provided in the vehicle body, the unlocking switch is communicatively connected to the control module, and the unlocking switch can be toggled by people in the vehicle; the unlocking switch is used to send unlocking information to the control module when it is toggled, and the control module is used to send opening information to the electric bolt when receiving the unlocking information, and the electric bolt is used to retract the output end when receiving the opening information.

[0017] By adopting the above technical solution, a method for manually intervening in door unlocking is provided for occupants of the vehicle. When the occupants observe through the door gap and determine that there is no obstacle posing a safety hazard behind the door, and the system fails to lift the restriction on the door in time due to some reasons (such as misjudgment of the sensing device, etc.), the occupants can actively toggle the unlocking switch; once the unlocking switch is toggled, an unlocking message is sent to the control module, and the control module sends an opening message to the electric bolt, causing the electric bolt to retract the output end, thereby lifting the restriction on the door. On the basis of ensuring that the door is automatically released from the restriction, the subjective judgment and actual needs of the occupants are taken into consideration, and the inconvenience caused by system failure or misjudgment is avoided as much as possible.

[0018] Preferably, it further includes a power supply unit, which is used to supply power to the car door opening anti-collision system. The power supply unit is a backup power supply and can continue to supply power after the car key is pulled out.

[0019] By adopting the above technical solution, the car door opening anti-collision system is ensured to be able to operate in the common exiting scenario when the vehicle is turned off and the car key is pulled out. As long as the people in the car intend to open the door, the system can respond, and the risk of "door opening kill" caused by system failure due to vehicle power outage is avoided as much as possible, providing all-round and uninterrupted protection for the safety of people in the car getting out of the car.

[0020] Preferably, the command module is a contact sensor, and the contact sensor is provided on a handle on the inner side of the vehicle door.

[0021] By adopting the above technical solution, the contact sensor can capture the touch action of the car occupant on the door handle; when the car occupant is about to open the door and the hand just touches the handle, the contact sensor can sense the behavior of the car occupant touching the handle, thereby determining that the car occupant intends to get off the car and sends preparation information to the control module.

[0022] Preferably, a warning light strip is also provided on the vehicle door, and the warning light strip is embedded in the side of the vehicle door away from the rotation center, or located on the inner side of the vehicle door, and the warning light strip is communicatively connected with the control module; the control module is used to send a lighting information to the warning light strip on the vehicle door corresponding to the command module that issues the preparation information when receiving the first obstacle information, and the warning light strip lights up when receiving the lighting information.

[0023] By adopting the above technical solution, when the car door is partially opened, people coming from behind can see the warning light strip on the car door. At this time, the car door is on one side of the lit warning light strip, and the car body is on the other side of the warning light strip, which can make it easier for people coming from behind to find that the car door is half-open, and then judge that someone is about to open the door and get out of the car, and avoid it. In addition, the light strip is located on the inside or side of the car door and does not affect the appearance of the car body. At the same time, for people in the car, the lighting of the light strip also serves as a secondary reminder, strengthening their awareness of the risks of opening the door, and improving the safety and warning effect of the system from both inside and outside the car.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. By configuring a control module, a command module, a limiting device, a first sensing device, and a second sensing device, when a person inside the vehicle intends to open the door, if there is an obstacle behind the vehicle, the door's opening range is first limited. The system then further checks whether the obstacle behind the vehicle will affect the safety of the door opening. If it does not, the door's opening range is automatically limited, reducing the incidence of "door-opening fatality" accidents and ensuring traffic safety. 2. By setting an unlock switch, if the system fails to correctly judge the situation behind the door, resulting in the door being unreasonably restricted, the occupant can use their own observation and judgment to actively toggle the unlock switch, directly sending an unlock signal to the control module, prompting the electric latch to retract, promptly releasing the door restriction and ensuring smooth exit of the vehicle; 3. By setting up a warning light strip, when there is an obstacle behind the vehicle, the warning light strip of the pre-open door will be lit. Pedestrians and vehicles behind the vehicle can clearly see the lit light strip from a distance, knowing in advance that the door is about to open, so they can make avoidance decisions, effectively reducing the chance of collision accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1This is a structural block diagram of a car door opening anti-collision system provided in an embodiment of the present application.

[0026] Figure 2 It is a structural diagram of the vehicle door and door frame in an embodiment of the present application.

[0027] Figure 3 yes Figure 2 Enlarged view of part A.

[0028] Explanation of the accompanying reference numerals: 1. Control module; 2. Command module; 3. Limiting device; 31. Electric latch; 32. Stop groove; 4. First sensing device; 5. Second sensing device; 6. Unlock switch; 7. Warning light strip; 8. Door frame; 81. Vehicle door. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-3 This application is described in further detail.

[0030] The embodiment of the present application discloses a car door opening anti-collision system. Figure 1 , which includes a control module 1, a command module 2, a restriction device 3, a first sensing device 4, a second sensing device 5, a warning light strip 7, a power supply unit, and an unlocking switch 6. The command module 2, the restriction device 3, the first sensing device 4, the second sensing device 5, the warning light strip 7, and the unlocking switch 6 are all communicatively connected to the control module 1. Among them, the power supply unit is used to supply power to the car door opening anti-collision system. The power supply unit is a backup power supply and can continue to supply power after the car key is pulled out, ensuring that the car door opening anti-collision system can still operate in the common getting-off scenario where the vehicle is turned off and the car key is pulled out. Specifically, the power supply unit is connected to the locking system of the car door 81 through a circuit. When the car door 81 is locked, the power supply unit stops supplying power and the car door opening anti-collision system is turned off; when the car door 81 is not locked, the power supply unit continues to supply power and the car door opening anti-collision system is turned on.

[0031] Reference Figures 1 to 3 A command module 2 and a restriction device 3 are provided on each vehicle door 81. Command module 2 is used to detect whether a vehicle occupant intends to open the corresponding vehicle door 81. If so, it sends a preparation message to control module 1. Specifically, command module 2 is a contact sensor, which is located on the inside handle of vehicle door 81. When a vehicle occupant touches the inside handle of vehicle door 81, or if the contact lasts for a certain period of time (e.g., more than one second), it is considered that the vehicle occupant intends to open vehicle door 81, and the contact sensor sends a preparation message to control module 1.

[0032] Reference Figure 1The first sensing device 4 is used to detect whether there are obstacles within a certain range behind the vehicle (preferably within five meters behind the vehicle). If so, it sends first obstacle information to the control module 1. Specifically, the first sensing device 4 is a visual sensor with a built-in computing unit (such as a microcontroller) and can be installed on the top, rear, or rearview mirror of the vehicle. The visual sensor collects image information and performs edge detection and analysis on the image information through the built-in computing unit to determine whether there are obstacles within the certain range behind the vehicle.

[0033] Reference Figure 1 Control module 1 is configured to receive the preparation information sent by command module 2 and, after receiving the preparation information, receive first obstacle information sent by first sensing device 4. Control module 1 is also configured to, after receiving the first obstacle information sent by first sensing device 4, send obstruction information to restriction device 3 on door 81 corresponding to command module 2 that issued the preparation information. Specifically, control module 1 employs a PLC controller.

[0034] Reference Figure 1 The limiting device 3 is configured to receive obstruction information from the control module 1 and, upon receiving the obstruction information, limit the opening range of the vehicle door 81. The limiting device 3 limits the opening range of the vehicle door 81 to 10-20 degrees. When the opening range of the vehicle door 81 is within the range of 10-20 degrees, the extent to which the vehicle door 81 extends beyond the door frame 8 after deflection is small, which is within a relatively safe range. Furthermore, the 10-20 degree range is sufficient to create a gap between the vehicle door 81 and the door frame 8 of the vehicle body. This gap allows for manual inspection of the presence of an obstacle within a certain range behind the door without having to open a window and look through the head.

[0035] Reference Figure 3 Specifically, the limiting device 3 includes an electric latch 31, which is fixed to the bottom inside the vehicle door 81. A retaining groove 32 is defined in the bottom of the vehicle door frame 8. The retaining groove 32 extends in an arc along the rotational center of the vehicle door 81, and the output end of the electric latch 31 can extend into the retaining groove 32. Within the retaining groove 32, the output end of the electric latch 31 can slide along the direction of the retaining groove 32 or abut against the sidewalls of the retaining groove 32. The electric latch 31 is electrically connected to the control module 1 and is configured to receive obstruction information from the control module 1. Upon receiving this information, the output end of the electric latch 31 extends outward and enters the retaining groove 32 on the vehicle door frame 8. In this state, the output end of the electric latch 31 cannot escape from the retaining groove 32 and can only move within the retaining groove 32, thereby limiting the opening range of the vehicle door 81.

[0036] In order to further improve the accuracy of judging whether it is safe to open the door 81, refer to Figure 1 and Figure 2A second sensing device 5 is installed on each vehicle door 81. It is fixed to the inside of the vehicle door 81 or embedded on a side of the vehicle door 81 away from the center of rotation. The second sensing device 5 utilizes a visual sensor with a built-in computing unit (such as a microcontroller). The second sensing device 5 is used to detect whether there is an obstacle within a certain range behind the vehicle door 81 (preferably within a range of five meters behind the vehicle body). If no obstacle is detected, it sends an unlock message to the control module 1; if so, it sends a second obstacle message to the control module 1. After receiving the first obstacle message, the control module 1 receives the unlock message from the second sensing device 5 and, upon receiving the unlock message, sends an open message to the corresponding electric latch 31. The second sensing device 5 further detects the area behind the vehicle door 81. If no obstacle is detected within this range, it indicates that the obstacle detected by the first sensing device 4 is not on the side of the opened door 81, and further opening the door poses no safety risk.

[0037] Reference Figure 1 and Figure 2 The first obstacle information and the second obstacle information both contain the position information of the obstacle. The control module 1 is used to receive the first obstacle information and the second obstacle information, and based on the position information of the obstacle in the first obstacle information and the second obstacle information, generate a coordinate system with the opened door 81 as the origin and the position of the obstacle as the mark point. Based on the position change of the mark point in the coordinate system, the moving direction of the mark point is determined to determine whether it is approaching the origin of the coordinate system. If not, an opening message is sent to the electric bolt 31. When it is determined that the mark point is not approaching the coordinate origin, it means that the obstacle is not approaching the opened door 81. At this time, opening the door 81 will not collide with the rear obstacle, and there is no safety hazard. The electric bolt 31 is used to receive the opening message sent by the control module 1 and retract the output end when receiving the opening message.

[0038] In order to facilitate manual access to limit the opening range of the door 81, refer to Figure 2 The vehicle body is equipped with an unlocking switch 6 corresponding to the electric latch 31. The unlocking switch 6 can be activated by a person inside the vehicle. When activated, the unlocking switch 6 transmits an unlocking message to the control module 1. Upon receiving the unlocking message, the control module 1 transmits an opening message to the electric latch 31. Upon receiving the opening message, the electric latch 31 retracts its output end. If a person inside the vehicle observes through the door gap and determines that there is no obstacle posing a safety hazard behind the vehicle door 81, and the system fails to promptly release the restriction on the vehicle door 81 due to some reason (such as a misjudgment by the sensing device or the obstacle moving too slowly), the person inside the vehicle can proactively activate the unlocking switch 6 to release the restriction on the opening range of the vehicle door 81.

[0039] In order to remind the people behind and inside the car to avoid the situation at the same time, refer to Figure 1 and Figure 2 The warning light strip 7 is embedded in the side of the vehicle door 81 away from the center of rotation, or located on the inside of the vehicle door 81. Upon receiving the first obstacle information, the control module 1 is configured to transmit an illumination signal to the warning light strip 7 on the corresponding vehicle door 81, which is the signal from the command module 2 that issued the preparation signal. Upon receiving the illumination signal, the warning light strip 7 illuminates. When the vehicle door 81 is partially opened, the warning light strip 7 on the vehicle door 81 is visible to passengers arriving later. At this point, the door 81 is partially on one side of the illuminated warning light strip 7, while the vehicle body is on the other side. This makes it easier for passengers arriving later to detect that the vehicle door 81 is partially open, allowing them to determine if someone is about to open the door and exit, and to take evasive action. The light strip is located on the inside or side of the vehicle door 81, so it does not affect the vehicle's appearance. Furthermore, the illumination of the light strip serves as a secondary reminder for passengers inside the vehicle, strengthening their awareness of the risks of opening the door. This improves the system's safety and warning effectiveness from both inside and outside the vehicle.

[0040] The implementation principle of the vehicle door opening collision avoidance system according to the present embodiment is as follows: When a vehicle occupant prepares to exit the vehicle and their hand contacts the contact sensor on the inside handle of the vehicle door 81, the contact sensor immediately transmits a preparation signal to the control module 1. Upon receiving the preparation signal, the control module 1 immediately receives information from the first sensing device 4. The first sensing device 4 detects the rear of the vehicle. If an obstacle is detected, the first sensing device 4 transmits first obstacle information containing the obstacle's location to the control module 1. Upon receiving the first obstacle information, the control module 1 first controls the output end of the electric latch 31 to extend outward and enter the retaining groove 32 of the vehicle door frame 8, thereby limiting the opening range of the vehicle door 81 and preventing a large opening of the vehicle door 81 from posing a collision risk to pedestrians or vehicles behind. Simultaneously, a signal is transmitted to the warning light strip 7 on the corresponding vehicle door 81 to illuminate. When the warning light strip 7 illuminates, in conjunction with the partially open state of the vehicle door 81, it alerts subsequent occupants and vehicles that the door 81 is about to open, while also providing a secondary warning to the vehicle occupants.

[0041] Next, the control module 1 further determines whether opening the vehicle door 81 is dangerous. The second sensing device 5 detects a certain range behind the vehicle door 81. If no obstacle is detected within this range, it indicates that the obstacle is not behind the vehicle door 81. The second sensing device 5 sends an unlock signal to the control module 1, instructing the control module 1 to control the electric latch 31 to release the restriction. If an obstacle is detected, the control module 1 sends a second obstacle signal containing the obstacle's location. After receiving the signal from the second sensing device 5, if it is the second obstacle signal, the control module 1 generates a coordinate system with the opened vehicle door 81 as the origin based on the obstacle's location information in the first and second obstacle signals. By analyzing the position changes of the marker points (obstacle locations) in the coordinate system, the control module 1 determines whether the obstacle is moving toward the coordinate origin (the location of the vehicle door 81). If it is not, the control module 1 sends an open signal to the electric latch 31 to release the restriction on the vehicle door 81. If the system fails to release the restriction on the door 81 in time, and the occupant observes through the door gap and determines that there is no safety hazard behind the door 81, he or she can manually toggle the unlock switch 6 inside the vehicle to manually release the restriction on the door 81. In this way, the incidence of "door-opening kill" accidents is reduced and traffic safety is guaranteed.

[0042] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A car door opening anti-collision system, characterized by: The vehicle comprises a control module (1), a command module (2), a limiting device (3), and a first sensing device (4); the command module (2), the limiting device (3), and the first sensing device (4) are all connected to the control module (1) for communication; and the command module (2) and the limiting device (3) are both provided on each vehicle door (81); The command module (2) is used to detect whether a person in the vehicle intends to open the corresponding door (81), and if so, to send a preparation message to the control module (1); The first sensing device (4) is used to detect whether there is an obstacle within a certain range behind the vehicle body, and if so, sends first obstacle information to the control module (1); The control module (1) is used to receive preparation information sent by the command module (2), and after receiving the preparation information, receive first obstacle information sent by the first sensing device (4); The control module (1) is further configured to, after receiving the first obstacle information sent by the first sensing device (4), send obstruction information to the restriction device (3) on the vehicle door (81) corresponding to the command module (2) that sends the preparation information; The limiting device (3) is used to receive the obstruction information sent by the control module (1), and after receiving the obstruction information, limit the opening range of the vehicle door (81).

2. The automobile door opening anti-collision system according to claim 1, characterized in that: The limiting device (3) limits the opening range of the vehicle door (81) to 10-20 degrees.

3. The automobile door opening collision avoidance system according to claim 1, characterized in that: The limiting device (3) comprises an electric bolt (31), the electric bolt (31) being fixed on the vehicle door (81), a retaining groove (32) being provided on the door frame (8) of the vehicle body, the output end of the electric bolt (31) being extendable into the retaining groove (32), and the output end of the electric bolt (31) being abutted against the side wall of the retaining groove (32) in the retaining groove (32); the electric bolt (31) being communicatively connected with the control module (1), the electric bolt (31) being used to receive obstruction information sent by the control module (1), and after receiving the obstruction information, the output end of the electric bolt (31) is extended into the retaining groove (32).

4. The automobile door opening anti-collision system according to claim 3, characterized in that: The automobile door opening anti-collision system further comprises a second sensing device (5), which is provided on each vehicle door (81) and is in communication connection with the control module (1); the second sensing device (5) is used to detect whether there is an obstacle within a certain range behind the vehicle door (81), and if not, sends unlocking information to the control module (1); the control module (1) is used to receive the unlocking information sent by the second sensing device (5) after receiving the first obstacle information, and send opening information to the corresponding electric bolt (31) when receiving the unlocking information; the electric bolt (31) is used to receive the opening information sent by the control module (1) and retract the output end when receiving the opening information.

5. The automobile door opening anti-collision system according to claim 4, characterized in that: The first obstacle information includes the position information of the obstacle; the second sensing device (5) is used to detect whether there is an obstacle behind the vehicle door (81); if so, the second obstacle information is sent to the control module (1), and the second obstacle information includes the position information of the obstacle; the control module (1) is used to receive the first obstacle information and the second obstacle information, and based on the position information of the obstacle in the first obstacle information and the second obstacle information, generate a coordinate system with the opened vehicle door (81) as the origin and the position of the obstacle as the mark point, and based on the position change of the mark point in the coordinate system, determine the moving direction of the mark point to determine whether it is approaching the origin of the coordinate system, and if not, send opening information to the electric bolt (31).

6. The automobile door opening anti-collision system according to claim 4, characterized in that: The second sensing device (5) is fixed on the inner side of the vehicle door (81), or is embedded on a side of the vehicle door (81) away from the rotation center.

7. The automobile door opening collision avoidance system according to claim 3, characterized in that: An unlocking switch (6) corresponding to the electric bolt (31) is provided in the vehicle body, the unlocking switch (6) is communicatively connected to the control module (1), and the unlocking switch (6) can be toggled by a person in the vehicle; the unlocking switch (6) is used to send unlocking information to the control module (1) when it is toggled, and the control module (1) is used to send opening information to the electric bolt (31) when it receives the unlocking information, and the electric bolt (31) is used to retract the output end when it receives the opening information.

8. The automobile door opening collision avoidance system according to claim 1, characterized in that: It also includes a power supply unit, which is used to supply power to the car door opening anti-collision system. The power supply unit is a backup power supply and can continue to supply power after the car key is pulled out.

9. The automobile door opening collision avoidance system according to claim 1, characterized in that: The command module (2) is a contact sensor, and the contact sensor is arranged on the handle on the inner side of the vehicle door (81).

10. The automobile door opening collision avoidance system according to claim 1, characterized in that: The vehicle door (81) is also provided with a warning light strip (7), which is embedded in the vehicle door (81) on a side away from the rotation center, or located on the inner side of the vehicle door (81), and is communicatively connected with the control module (1); the control module (1) is used to send a lighting information to the warning light strip (7) on the vehicle door (81) corresponding to the command module (2) that sends the preparation information when receiving the first obstacle information, and the warning light strip (7) lights up when receiving the lighting information.

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