Vehicle-mounted emergency braking dangerous behavior identification system, control method and storage medium

Abstract

The present invention provides a method for identifying dangerous behaviors of sudden braking on a vehicle. The method is implemented by a vehicle-mounted sudden braking dangerous behavior identification system. The vehicle-mounted sudden braking dangerous behavior identification system includes a Bluetooth electronic tag arranged on a front vehicle and a Bluetooth signal receiving station arranged on a rear vehicle, wherein the Bluetooth signal receiving station includes a first Bluetooth antenna, a second Bluetooth antenna and a processor arranged on the front of the vehicle. The method includes: S1, obtaining radio frequency information generated by the Bluetooth electronic tag due to braking of the front vehicle; S2, parsing the distance information of the Bluetooth electronic tag relative to the Bluetooth signal receiving station according to the radio frequency information; S3, judging the distance of the front vehicle closest to the rear vehicle according to the distance information; S4, continuously obtaining the distance of the front vehicle closest to the rear vehicle, and starting timing; S5, judging whether the reduction in the distance of the front vehicle closest to the rear vehicle within a unit time exceeds a set range, and if so, judging that the front vehicle suddenly brakes, and alarming.

Description

Technical Field

[0001] The invention relates to a front vehicle brake recognition vehicle-mounted emergency braking dangerous behavior recognition system, a control method and a storage medium. Background Art

[0002] The vehicle-mounted driving control system generally includes a lane keeping assist system, an automatic parking assist system, a brake assist system, a reversing assist system and a driving assist system. The current driving assist system generally also includes functions such as vehicle distance recognition and brake recognition. At present, the front vehicle brake recognition is generally achieved by obtaining the brake lights of the front vehicle through cameras. However, this recognition method is greatly limited when the visual conditions are not very good, such as heavy rain, heavy fog, dust, haze and other weather conditions make it difficult to recognize. Therefore, it is necessary to optimize the existing AI visual recognition system. Especially for highways, due to their high speed, if the emergency brake is not discovered in time, it is easy to cause multiple cars to rear-end in succession. Summary of the invention

[0003] The present invention provides a vehicle-mounted emergency braking dangerous behavior identification system, a control method and a storage medium, which can effectively solve the above-mentioned problems.

[0004] The present invention is achieved in that:

[0005] A method for identifying dangerous behaviors of sudden braking on a vehicle is implemented by a dangerous behavior identification system of sudden braking on a vehicle. The dangerous behavior identification system of sudden braking on a vehicle comprises a Bluetooth electronic tag arranged on a front vehicle and a Bluetooth signal receiving station arranged on a rear vehicle, wherein the Bluetooth signal receiving station comprises a first Bluetooth antenna arranged on the front of the vehicle, a second Bluetooth antenna and a processor, and the method comprises:

[0006] S1, obtaining the radio frequency information generated by the Bluetooth electronic tag due to the braking of the front vehicle; S2, parsing the distance information of the Bluetooth electronic tag relative to the Bluetooth signal receiving station from the radio frequency information; S3, judging the distance of the front vehicle closest to the rear vehicle according to the distance information; S4, continuously obtaining the distance of the front vehicle closest to the rear vehicle and starting timing; S5, judging whether the reduction in the distance of the front vehicle closest to the rear vehicle per unit time exceeds a set range, and if so, judging that the front vehicle brakes suddenly, and sounding an alarm.

[0007] As a further improvement, the first Bluetooth antenna and the second Bluetooth antenna are symmetrically arranged on both sides of the front of the rear vehicle, and the Bluetooth electronic tag is arranged in the middle of the rear of the front vehicle.

[0008] As a further improvement, in step S2, the step of parsing the distance information of the Bluetooth electronic tag relative to the Bluetooth signal receiving station from the radio frequency information includes:

[0009] S21, extracting the RSSI value from the radio frequency information;

[0010] S22, eliminating the interference of multipath effect on RSSI value by K-means clustering algorithm, and obtaining RSSI value after eliminating interference;

[0011] S23, substituting the RSSI value after eliminating interference into the loss model of RSSI and distance, so as to obtain the distance d from the first Bluetooth antenna and the second Bluetooth antenna to the Bluetooth electronic tag respectively. 1-n and 2-n , where n is the identity information of the Bluetooth electronic tag of each preceding vehicle.

[0012] As a further improvement, in step S3, the step of determining the distance of the leading vehicle closest to the trailing vehicle according to the distance information includes:

[0013] S31, obtaining the distance d from the first Bluetooth antenna and the second Bluetooth antenna to the Bluetooth electronic tag respectively 1-n d 2-n The absolute value of the difference A n ;

[0014] S32, determine the absolute value A n Whether the size of is within a predetermined range, if yes, it is judged as the preceding vehicle, otherwise it is judged as not the preceding vehicle;

[0015] S33, obtain the absolute value A n The size is within the predetermined range, and the distance d 1-n d 2-n The minimum judgment is the distance d of the front vehicle closest to the rear vehicle 1-i d 2-i , i is the identity information of the front vehicle closest to the rear vehicle.

[0016] The present invention further provides a vehicle-mounted emergency braking dangerous behavior identification system, comprising a Bluetooth electronic tag arranged on a front vehicle and a Bluetooth signal receiving station arranged on a rear vehicle, wherein the Bluetooth signal receiving station comprises a first Bluetooth antenna arranged on the front of the vehicle, a second Bluetooth antenna and a processor;

[0017] Wherein, the Bluetooth electronic tag is used to send out radio frequency information when the preceding vehicle brakes;

[0018] The first Bluetooth antenna and the second Bluetooth antenna are used to obtain the radio frequency information;

[0019] The processor is used to analyze the distance information of the Bluetooth electronic tag relative to the Bluetooth signal receiving station according to the radio frequency information, and the processor is further used to determine the distance of the front vehicle closest to the rear vehicle according to the distance information and to issue an alarm.

[0020] As a further improvement, the first Bluetooth antenna and the second Bluetooth antenna are symmetrically arranged on both sides of the front of the rear vehicle, and the Bluetooth electronic tag is arranged in the middle of the rear of the front vehicle; and the processor is further used to extract the RSSI value from the radio frequency information; then the interference of the multipath effect on the RSSI value is eliminated by the K-means clustering algorithm to obtain the RSSI value after the interference is eliminated; finally, the RSSI value after the interference is eliminated is substituted into the loss model of RSSI and distance, so as to obtain the distance d from the first Bluetooth antenna and the second Bluetooth antenna to the Bluetooth electronic tag respectively. 1-n and 2-n , where n is the identity information of the Bluetooth electronic tag of each preceding vehicle.

[0021] The present invention further provides a computer storage medium, which, when executed by a processor, implements the above-mentioned vehicle-mounted emergency braking dangerous behavior identification method.

[0022] The beneficial effects of the present invention are as follows: the vehicle-mounted emergency braking dangerous behavior identification system, control method and storage medium provided by the present invention can obtain the radio frequency information generated by the Bluetooth electronic tag due to the braking of the front vehicle, and obtain the distance of the front vehicle based on the radio frequency information, so as to timely obtain the braking condition of the front vehicle and remind the driver of the condition of the front vehicle in a timely and accurate manner. In addition, by obtaining the distance of the front vehicle through radio frequency information, the technical problem of being unable to obtain the braking information of the front vehicle due to poor visual conditions caused by weather reasons can be avoided. In addition, through the simple layout of Bluetooth antennas and Bluetooth electronic tags, the distance of the front vehicle closest to the rear vehicle can be identified to reduce interference. Finally, by judging the distance reduction Δd of the front vehicle i per unit time 1-i Whether it exceeds the set range and the distance d of the nearest front vehicle to the rear vehicle 1-i d 2-i Whether it is less than the set value, and further alarm, can improve driving safety and effectively optimize the existing AI visual recognition system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the vehicle-mounted emergency braking dangerous behavior identification system provided by an embodiment of the present invention when in use.

[0025] Figure 2 It is a framework diagram of a vehicle-mounted emergency braking dangerous behavior identification system provided by an embodiment of the present invention.

[0026] Figure 3 It is a schematic diagram of a vehicle-mounted emergency braking dangerous behavior identification system provided by another embodiment of the present invention when in use.

[0027] Figure 4 The vehicle-mounted emergency braking dangerous behavior recognition system provided by the embodiment of the present invention calculates the distance reduction Δd 1-i Schematic diagram of the time. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0030] The front vehicle brake recognition vehicle-mounted emergency braking dangerous behavior recognition system, control method and storage medium of the present invention can be combined with the existing visual recognition system, which will not be described in detail here. For example, it can be combined with the existing VIA panoramic stitching (Multi-Stitch) technology to seamlessly integrate the real-time generated video data, perform dynamic multi-directional monitoring of the vehicle, and provide a top view, front view, rear view and side view.

[0031] Reference Figure 1-2As shown, an embodiment of the present invention provides a method for identifying dangerous behaviors of sudden braking on a vehicle, and the method is implemented by a dangerous behavior identification system of sudden braking on a vehicle, wherein the dangerous behavior identification system of sudden braking on a vehicle comprises a Bluetooth electronic tag 10 arranged on a front vehicle and a Bluetooth signal receiving station 11 arranged on a rear vehicle, wherein the Bluetooth signal receiving station 11 comprises a first Bluetooth antenna 111 arranged on the front of the vehicle, a second Bluetooth antenna 112 and a processor 110, and the method comprises:

[0032] S1, obtaining radio frequency information generated by the Bluetooth electronic tag 10 due to braking of the preceding vehicle;

[0033] S2, parsing the distance information of the Bluetooth electronic tag 10 relative to the Bluetooth signal receiving station 11 from the radio frequency information;

[0034] S3, determining the distance of the front vehicle closest to the rear vehicle according to the distance information, and sounding an alarm.

[0035] As a further improvement, the first Bluetooth antenna 111 and the second Bluetooth antenna 112 are symmetrically arranged on both sides of the front of the rear vehicle, and the Bluetooth electronic tag 10 is arranged in the middle of the rear of the front vehicle. Figure 3 In other embodiments, the vehicle-mounted emergency braking dangerous behavior recognition system may further include a third Bluetooth antenna 113 disposed in the middle position of the front of the rear vehicle to improve the detection accuracy.

[0036] As a further improvement, the transmission distance of the Bluetooth electronic tag 10 can be set according to actual requirements. If the distance is too long, the power consumption is high, and if the distance is too short, it is not conducive to the brake recognition of the preceding vehicle. Preferably, the transmission distance of the Bluetooth electronic tag 10 is in the range of 10 meters to 100 meters. More preferably, the transmission distance of the Bluetooth electronic tag 10 is in the range of 30 meters to 50 meters.

[0037] In addition, in step S1, the Bluetooth electronic tag 10 can be connected in parallel with the taillights of the car. When the taillights of the car light up due to braking, the Bluetooth electronic tag 10 is activated at the same time, thereby reducing additional control chips or control modules.

[0038] In step S2, the Bluetooth signal receiving station 11 can switch between a standby mode and a wake-up mode. When no radio frequency information is received, the Bluetooth signal receiving station 11 is in the standby mode. When radio frequency information is received, the Bluetooth signal receiving station 11 is awakened by radio frequency information to enter the wake-up mode and work.

[0039] As a further improvement, in step S2, the step of parsing the distance information of the Bluetooth electronic tag 10 relative to the Bluetooth signal receiving station 11 from the radio frequency information includes:

[0040] S21, extracting the RSSI value from the radio frequency information;

[0041] S22, eliminating the interference of multipath effect on RSSI value by K-means clustering algorithm, and obtaining RSSI value after eliminating interference;

[0042] S23, substituting the RSSI value after eliminating interference into the loss model of RSSI and distance, so as to obtain the distance d from the first Bluetooth antenna 111 and the second Bluetooth antenna 112 to the Bluetooth electronic tag 10 respectively. 1-n and 2-n , where n is the identity information of the Bluetooth electronic tag 10 of each preceding vehicle. In other words, n can be the license plate information written later, or it can be the unique information of the vehicle, such as the engine code, etc., which is conducive to the identification of the following vehicle. The K-means clustering algorithm and the loss model of RSSI and distance are prior arts and will not be described in detail here.

[0043] In step S21, if the RSSI value is too small, it means that the distance is too long or the vehicle is blocked by the preceding vehicle. In this case, it can be automatically filtered to reduce the amount of calculation.

[0044] As a further improvement, in step S3, the step of determining the distance of the leading vehicle closest to the trailing vehicle according to the distance information includes:

[0045] S31, obtaining the distance d from the first Bluetooth antenna 111 and the second Bluetooth antenna 112 to the Bluetooth electronic tag 10 respectively. 1-n d 2-n The absolute value of the difference A n , that is |d 1-n d 2-n |=A n ;

[0046] S32, determine the absolute value A n Whether the size of is within a predetermined range, if yes, it is judged as the preceding vehicle, otherwise it is judged as not the preceding vehicle;

[0047] S33, obtain the absolute value A n The size is within the predetermined range, and the distance d 1-n d 2-n The minimum judgment is the distance d of the front vehicle closest to the rear vehicle 1-i d 2-i , i is the identity information of the front vehicle closest to the rear vehicle.

[0048] Please refer to Figure 1Taking the rear vehicle A as an example, it can receive the radio frequency signals of the front vehicles B, C, and D. Therefore, the distances d from the first Bluetooth antenna 111 and the second Bluetooth antenna 112 to the Bluetooth electronic tag 10 can be calculated. 1-n d 2-n The absolute value of the difference A n Within the predetermined range, vehicle D is distinguished from vehicles B and C. In addition, since the distance of vehicle B is the shortest, it is determined that the nearest vehicle to rear vehicle A is vehicle B in front.

[0049] As a further improvement, the vehicle-mounted emergency braking dangerous behavior identification method further includes:

[0050] S4, continuously obtain the distance d of the front vehicle i closest to the rear vehicle 1-i d 2-i , and start timing T;

[0051] S5, determining the distance reduction Δd of the preceding vehicle i per unit time 1-i If the distance of the preceding vehicle i exceeds the set range, it is determined that the preceding vehicle i brakes suddenly and an alarm is sounded. It can be understood that by determining the distance reduction Δd of the preceding vehicle i per unit time, 1-i Whether it exceeds the set range, it can be determined whether the front vehicle brakes suddenly. If the front vehicle brakes suddenly, the driver is reminded to pay attention.

[0052] In step S5, further, in order to accurately obtain the distance reduction Δd of the preceding vehicle i 1-i , it is necessary to further obtain the speed of the following vehicle and the change in speed. Please refer to Figure 4 Specifically, the vehicle speed at the start of timing T1 and the speed of the vehicle at the first time T2 can be obtained in real time through the vehicle-mounted system, so as to obtain the distance S1 of the rear vehicle in unit time. At this time, the distance L1 between the front and rear vehicles at time T1 and the distance L2 between the front and rear vehicles at time T2 can be calculated through the Bluetooth system. Therefore, the distance S2=S1+L2-L1 of the front vehicle in unit time can be obtained. At the second time T3, the distance S4=S3+L3-L2 of the front vehicle in the second unit time can also be obtained. According to the deceleration motion formula, S=V*t-1 / 2a*t 2 , that is, S2 = S1 + L2 - L1 = V1*t - 1 / 2a1*t 2 , and S4=S3+L3-L2=V2*t-1 / 2a2*t 2 . Assuming that the front vehicle is moving at a uniform deceleration, and a1 = a2, the simplified calculation can be obtained as V1-V2 = (S2-S4) / t. In other words, when the difference between the front and rear speeds exceeds the set value, the distance reduction S2-S4 = Δd 1-i When it exceeds the set value, it can be judged as an emergency brake.

[0053] As a further improvement, the vehicle-mounted emergency braking dangerous behavior identification method further includes:

[0054] S6, when the distance d from the nearest vehicle to the rear vehicle 1-i d 2-i When it is less than the set value, an alarm will sound.

[0055] As a further improvement, the vehicle-mounted emergency braking dangerous behavior identification method further includes:

[0056] S7, sending information of the preceding vehicle that is judged to be braking suddenly to the platform.

[0057] As a further improvement, the vehicle-mounted emergency braking dangerous behavior identification method further includes:

[0058] S8, the platform can further count the emergency braking situation of each vehicle in a unit time, and when the emergency braking situation in a unit time exceeds a set value, the driver of the corresponding vehicle is reminded to pay attention to driving habits and the owner is reminded to perform maintenance in time. Of course, the sending of this information can be freely set by the owner to protect user privacy, and is not limited here.

[0059] As a further improvement, the vehicle-mounted emergency braking dangerous behavior identification method further includes:

[0060] S9, when the distance d between the front vehicle and the rear vehicle is the closest 1-i d 2-i When it is less than the set value, and the following vehicle does not take braking measures and the speed exceeds the set value, the vehicle is controlled to start braking.

[0061] Please refer to Figure 1-2 The present invention further provides a vehicle-mounted emergency braking dangerous behavior identification system, comprising a Bluetooth electronic tag 10 arranged on a front vehicle and a Bluetooth signal receiving station 11 arranged on a rear vehicle, wherein the Bluetooth signal receiving station 11 comprises a first Bluetooth antenna 111 arranged on the front of the vehicle, a second Bluetooth antenna 112 and a processor 110;

[0062] Wherein, the Bluetooth electronic tag 10 is used to send out radio frequency information when the preceding vehicle brakes;

[0063] The first Bluetooth antenna 111 and the second Bluetooth antenna 112 are used to obtain the radio frequency information;

[0064] The processor 110 is used to analyze the distance information of the Bluetooth electronic tag 10 relative to the Bluetooth signal receiving station 11 according to the radio frequency information, and the processor 110 is further used to determine the distance of the front vehicle closest to the rear vehicle according to the distance information and to generate an alarm.

[0065] As a further improvement, the first Bluetooth antenna 111 and the second Bluetooth antenna 112 are symmetrically arranged on both sides of the front of the rear vehicle, and the Bluetooth electronic tag 10 is arranged in the middle of the rear of the front vehicle; and the processor 110 is further used to extract the RSSI value from the radio frequency information; then the interference of the multipath effect on the RSSI value is eliminated by the K-means clustering algorithm to obtain the RSSI value after the interference is eliminated; finally, the RSSI value after the interference is eliminated is substituted into the loss model of RSSI and distance, so as to obtain the distance d from the first Bluetooth antenna 111 and the second Bluetooth antenna 112 to the Bluetooth electronic tag 10 respectively. 1-n and 2-n , where n is the identity information of the Bluetooth electronic tag 10 of each preceding vehicle.

[0066] An embodiment of the present invention further provides a computer storage medium, which, when executed by a processor, implements the above-mentioned vehicle-mounted emergency braking dangerous behavior identification method.

[0067] In the several embodiments provided by the present invention, it should be understood that the disclosed systems and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0068] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0069] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for identifying dangerous behaviors of sudden braking in a vehicle, characterized in that: The method is implemented by an on-board emergency braking dangerous behavior identification system, the on-board emergency braking dangerous behavior identification system comprising a Bluetooth electronic tag (10) arranged on a front vehicle and a Bluetooth signal receiving station (11) arranged on a rear vehicle, wherein the Bluetooth electronic tag (10) is arranged in parallel with the taillight of the vehicle, the Bluetooth signal receiving station (11) comprises a first Bluetooth antenna (111) arranged on the front of the vehicle, a second Bluetooth antenna (112) and a processor (110), the Bluetooth electronic tag (10) is arranged at the middle of the rear of the front vehicle, the Bluetooth signal receiving station (11) is in a standby mode when no radio frequency information is received, and when radio frequency information is received, the Bluetooth signal receiving station (11) is awakened by the radio frequency information to enter the awakening mode and work, the method comprising: S1, obtaining radio frequency information generated by the Bluetooth electronic tag (10) due to braking of the preceding vehicle; S2, parsing the distance information of the Bluetooth electronic tag (10) relative to the Bluetooth signal receiving station (11) from the radio frequency information, the specific steps comprising: S21, extracting the RSSI value from the radio frequency information, if the RSSI value is too small, the distance is too long or blocked by the preceding vehicle, in which case it can be automatically filtered, thereby reducing the amount of calculation; S22, eliminating the interference of the multipath effect on the RSSI value by using a K-means clustering algorithm, and obtaining the RSSI value after the interference is eliminated; S23, substituting the RSSI value after the interference is eliminated into the loss model of RSSI and distance, thereby obtaining the distance d from the first Bluetooth antenna (111) and the second Bluetooth antenna (112) to the Bluetooth electronic tag (10), respectively. 1-n and 2-n , where n is the identity information of the Bluetooth electronic tag (10) of each preceding vehicle; S3, determining the distance of the front vehicle closest to the rear vehicle according to the distance information; S4, continuously obtaining the distance of the front vehicle closest to the rear vehicle and starting timing; S5, judging whether the reduction in the distance of the front vehicle closest to the rear vehicle within a unit time exceeds a set range, if so, judging that the front vehicle brakes suddenly and giving an alarm, which specifically includes: obtaining the speed of the rear vehicle at the start time T1 and the speed of the rear vehicle at the first time T2 in real time through the vehicle-mounted system, thereby obtaining the travel distance S1 of the rear vehicle within a unit time, at which time, the distance L1 between the front and rear vehicles at time T1, and the distance L2 between the front and rear vehicles at time T2, are calculated through the Bluetooth system; then the travel distance S2=S1+L2-L1 of the front vehicle within a unit time is obtained; at the second time T3, the travel distance S4=S3+L3-L2 of the front vehicle within the second unit time can also be obtained; finally, according to the deceleration motion formula, S2=S1+L2-L1=V1*t-1 / 2a1*t 2 , and S4=S3+L3-L2=V2*t-1 / 2a2*t 2 , and assuming that the front vehicle is moving at a uniform deceleration, the simplified calculation is V1-V2=(S2-S4) / t, when the distance reduction S2-S4=Δd 1-i When it exceeds the set value, it is judged as emergency braking; S6, sending information of the preceding vehicle that is judged to have braked suddenly to the platform; S8, the platform further counts the emergency braking situation of each vehicle in a unit time, and when the emergency braking situation in a unit time exceeds a set value, the driver of the corresponding vehicle is reminded to pay attention to driving habits and the owner is reminded to perform maintenance in time.

2. The method for identifying dangerous behaviors of sudden braking in a vehicle as claimed in claim 1, characterized in that: The first Bluetooth antenna (111) and the second Bluetooth antenna (112) are symmetrically arranged on both sides of the front of the rear vehicle, and the Bluetooth electronic tag (10) is arranged in the middle of the rear of the front vehicle.

3. The method for identifying dangerous behaviors of sudden braking in a vehicle as claimed in claim 1, characterized in that: In step S3, the step of determining the distance of the leading vehicle closest to the trailing vehicle according to the distance information includes: S31, obtaining the distance d from the first Bluetooth antenna (111) and the second Bluetooth antenna (112) to the Bluetooth electronic tag (10) respectively. 1-n ,d 2-n The absolute value of the difference A n ; S32, determine the absolute value A n Whether the size of is within a predetermined range, if yes, it is judged as the preceding vehicle, otherwise it is judged as not the preceding vehicle; S33, obtain the absolute value A n The size is within the predetermined range, and the distance d 1-n ,d 2-n The minimum judgment is the distance d of the front vehicle closest to the rear vehicle 1-i ,d 2-i , i is the identity information of the front vehicle closest to the rear vehicle.

4. A computer storage medium, characterized in that: When the computer storage medium is executed by the processor, the method for identifying dangerous vehicle emergency braking behaviors as described in any one of claims 1 to 3 is implemented.

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