A safety monitoring and early warning system based on distance detection

Abstract

The present invention relates to a safety monitoring and early warning system based on distance detection applied in the field of monitoring and alarm technology. The system can monitor the vehicle distance of three adjacent high-speed vehicles located in the same lane in real time. When a rear-end collision risk occurs, the three vehicles can be warned in time. For the driver of vehicle B that is about to rear-end vehicle A, the system can remind the driver to slow down in time, so as to adjust the vehicle distance to a safe following distance. When vehicle B fails to operate in time, vehicle A can be warned to change lanes for self-rescue. When changing lanes, the rear alarm and intelligent control turn signal of vehicle B can be triggered to light up automatically, and then vehicle C behind vehicle B and vehicles in adjacent lanes can be warned of the risk of rear-end collision between vehicle A and vehicle B and the lane change of vehicle A. Compared with the prior art, the system can warn of the possible risk of rear-end collision before the rear-end collision, provide the leading vehicle with sufficient self-rescue time, effectively avoid the occurrence of rear-end collision, and greatly reduce the safety hazards of continuous rear-end collision.

Description

Technical Field

[0001] The present invention relates to a safety monitoring and early warning system, and in particular to a safety monitoring and early warning system based on distance detection and applied in the technical field of monitoring and alarm. Background Art

[0002] Rear-end collision refers to the collision between the front of the vehicle and the rear of the vehicle in front when two vehicles are following each other in the same lane. It is mainly caused by the following distance being less than the minimum safe distance, the driver's slow reaction or poor performance of the braking system. The minimum safe distance is the safe following distance.

[0003] In the prior art, the control of the distance between vehicles is generally based on the driver's experience, which leads to the situation that the following distance is easily too small. Vehicles are often prone to rear-end collisions during driving, which can easily have serious consequences for the safety of life and property of people in the vehicle. In addition, for vehicles that rear-end collisions on highways, the safety hazard caused is even greater, and it is also easy to cause continuous rear-end collisions. In the prior art, it is difficult to detect and warn in time before the vehicle rear-ends, especially for the front vehicle that is rear-ended, which is relatively passive and often has been rear-ended by the time it discovers it. Summary of the invention

[0004] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that it is difficult to issue an early warning before a vehicle may rear-end a collision, which makes it difficult to eliminate the safety hazard caused by the vehicle rear-end collision.

[0005] In order to solve the above problems, the present invention provides a safety monitoring and early warning system based on distance detection, including a central control platform on a car, the central control platform is signal-connected with a timing module, a calculation module, a comparison module and an early warning module, a high-definition camera and an infrared rangefinder are installed at the front of the car, an infrared rangefinder is also installed at the rear of the car, a speed sensor is installed in the car body, and the high-definition camera, two infrared rangefinders and the speed sensor are all signal-connected with the central control platform;

[0006] The warning module includes an in-car alarm installed in the car cab, a rear alarm installed outside the car, and a manual turn signal and an intelligent turn signal installed at the rear of the car. The intelligent turn signal is connected to the central control platform signal, and the manual turn signal is turned on by the lever on the steering wheel.

[0007] The rear vehicle alarm includes a base installed on the rear of the vehicle, a hemispherical cover located on the base, and an electric push rod connected between the base and the hemispherical cover. The extended end of the electric push rod faces upward, and a plurality of evenly distributed flashing strips are fixedly connected to the lower edge of the hemispherical cover, and the surface of the flashing strips is coated with a reflective coating.

[0008] In the above-mentioned safety monitoring and early warning system based on distance detection, the distance between three adjacent high-speed vehicles in the same lane can be monitored in real time. When the risk of rear-end collision occurs, the three vehicles can be warned in time, and the front vehicle can be assisted in self-rescue. Compared with the existing technology, it can effectively avoid the occurrence of rear-end collisions and greatly reduce the safety hazards of continuous rear-end collisions.

[0009] As a further improvement of the present application, the outer shell of the electric push rod is provided with an electromagnetic ring, an iron sheet is embedded inside the lower end of the flash strip, and the flash strip is made of a lightweight and flexible material. When the electromagnetic ring is energized, it generates magnetic attraction to the iron sheet.

[0010] A safety monitoring and early warning system based on distance detection, the early warning method of which comprises the following steps:

[0011] S1. First, the three adjacent cars in the same lane are recorded as car A, car B and car C in the direction of travel, among which car B is specifically the car that has rear-ended the car in front;

[0012] S2. The two infrared rangefinders at the front and rear of each vehicle monitor the distance between the adjacent vehicles in real time, and feed back the detected distance data to the corresponding central control platform in real time. The comparison module compares the distance data with the safe following distance in real time. When the distance between the vehicles is lower than the safe following distance, the timing module starts timing, and the in-vehicle alarms of vehicles A and B sound an alarm, alerting the driver of vehicle A that there is a risk of rear-end collision with vehicle B behind, and at the same time alerting the driver of vehicle B that there is a risk of rear-end collision with vehicle A in front, so that the driver of vehicle B can slow down and increase the distance in time;

[0013] S3. When the distance between cars A and B still does not increase to the safe following distance after the timing module reaches the timing threshold, the central control platform warns the driver of car A again through the in-car alarm that he can control the manual turn signal to light up by the lever to warn the lane change. At this time, after the high-definition camera on car B captures the manual turn signal of car A lighting up, the central control platform directly controls the intelligent turn signal of car B to light up and triggers the rear alarm, thereby warning car C and vehicles in the adjacent lanes that there is a risk of rear-end collision with the front vehicle. On the one hand, it warns the driver of car C to slow down in time to effectively avoid continuous rear-end collisions. On the other hand, it warns the vehicles in the adjacent lanes to slow down and give way to car A, which is convenient for car A to save itself. After car A temporarily changes lanes, it is not easy to rear-end the vehicles in the adjacent lanes, thereby achieving self-rescue of car A and eliminating the risk of being rear-ended by car B.

[0014] As a further improvement of the present application, the timing threshold of the timing module changes with the vehicle speed, and the two are inversely proportional.

[0015] As a further improvement of the present application, after the risk of vehicle A being rear-ended by vehicle B occurs in step S2, the calculation module estimates in real time the time required for vehicle A to be rear-ended based on the vehicle distance difference between the two vehicles per unit time and the real-time vehicle distance between the two vehicles. When the estimated time required for the rear-end collision is less than the threshold on the timing module, vehicle A immediately performs a lane change operation. When the estimated time required for the rear-end collision is greater than the threshold on the timing module, the lane change operation is performed with the threshold on the timing module as the time node.

[0016] As another improvement of the present application, a safety monitoring and early warning system based on distance detection also includes a simulation early warning module and a locator installed in the vehicle, the locator and the central control platform are both connected to the traffic control system signal, and the simulation early warning module is connected to the central control platform signal.

[0017] As another improvement and supplement to the present application, the traffic control system obtains the real-time positioning data of the running vehicles through the locator. When the distance between car A and car B running in the same direction is less than the safe following distance plus 50-100 meters, the traffic control system synchronously shares the position information of each other with the hollow platforms of the two vehicles, so that car A and car B are in a pseudo-communication state. Based on the vehicle's navigation system, the driving conditions of car A and car B are simulated in real time on the display screen of the central control platform.

[0018] As another improvement of the present application, the base includes a bottom plate and a variable disc installed on the bottom plate through an electric turntable, the variable disc is provided with a plurality of smooth variable grooves distributed in a circular array, the plurality of smooth variable grooves are fixedly connected to an inner wall away from the electric push rod with a fixed starting block, a moving starting block is slidably connected inside the smooth variable grooves, the lower end of the flash strip is fixedly connected to the moving starting block, piezoelectric ceramic sheets are installed at the ends of the fixed starting block and the moving starting block that are close to each other, an LED light strip is attached to the surface of the flash strip, and the LED light strip is electrically connected to the corresponding piezoelectric ceramic sheet.

[0019] As another improvement supplement of the present application, a plurality of adjacent fixed power blocks form a light-changing group, and there are no less than three light-changing groups on the light-changing disk, and the lengths of the plurality of fixed power blocks in each light-changing group all change gradiently along the same direction.

[0020] To summarize, the distance between three adjacent high-speed vehicles in the same lane can be monitored in real time. When the risk of rear-end collision occurs, the three vehicles can be warned in time. First, the driver of car B that is about to rear-end car A will be warned. When he fails to take corresponding measures in time to eliminate the risk of rear-end collision, the driver of car A can be warned to change lanes to save himself. When the manual turn signal of car A lights up, the rear alarm and intelligent turn signal of car B can light up automatically, and then car C behind car B and vehicles in the adjacent lane can be warned that car A is at risk of being rear-ended and is about to change lanes, so that vehicles in the adjacent lane can slow down in time to avoid being rear-ended after changing lanes. Compared with the existing technology, it can achieve a warning of possible rear-end collision risks before the rear-end collision, provide the leading vehicle with sufficient self-rescue time, effectively avoid rear-end collisions, effectively avoid the occurrence of rear-end collisions, and greatly reduce the safety hazards of continuous rear-end collisions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a main principle block diagram of the first implementation mode of this application;

[0022] Figure 2 This is a main principle block diagram of the early warning module of the first implementation mode of this application;

[0023] Figure 3 This is a schematic diagram of the relative positions between adjacent vehicles when a rear-end collision risk occurs in the first implementation mode of the present application;

[0024] Figure 4 This is a schematic diagram of the first implementation mode of the present application when vehicle A changes lanes to save itself when a rear-end collision risk occurs;

[0025] Figure 5 This is a schematic diagram of the first implementation mode of the present application when a rear-end collision risk occurs and vehicle A changes lanes to save itself and eliminates the rear-end collision risk;

[0026] Figure 6 This is a schematic diagram of the use process of the rear vehicle alarm according to the first embodiment of the present application;

[0027] Figure 7 This is a schematic diagram of the process of establishing a pseudo communication state between two adjacent vehicles in the second implementation mode of the present application;

[0028] Figure 8 This is a schematic diagram of the simulation warning module of the second embodiment of the present application when simulating the warning of the state of the adjacent two sides;

[0029] Fig. 9 This is a front view of the rear vehicle alarm after being deployed according to the third embodiment of the present application;

[0030] Fig.10 This is a front view of the rear vehicle alarm device of the third embodiment of the present application when in use;

[0031] Fig.11 A top view of a variable optical disk according to a third embodiment of the present application;

[0032] Fig.12 This is a top view of the rotating time-varying optical disc of the rear vehicle alarm according to the third embodiment of the present application.

[0033] Description of the numbers in the figure:

[0034] 1 base, 11 bottom plate, 12 variable optical disc, 101 variable smooth groove, 2 hemispherical cover, 3 electric push rod, 4 flashing bar, 51 fixed charging block, 52 dynamic charging block. DETAILED DESCRIPTION

[0035] Three implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0036] The first implementation method:

[0037] Figure 1-Figure 2 A safety monitoring and early warning system based on distance detection is shown, including a central control platform on a car, the central control platform is signal-connected with a timing module, a calculation module, a comparison module and an early warning module, a high-definition camera and an infrared rangefinder are installed at the front of the car, an infrared rangefinder is also installed at the rear of the car, a speed sensor is installed in the car body, and the high-definition camera, two infrared rangefinders and the speed sensor are all signal-connected with the central control platform;

[0038] The warning module includes an in-car alarm installed in the car cab, a rear alarm installed outside the car, and a manual turn signal and an intelligent turn signal installed at the rear of the car. The intelligent turn signal is connected to the central control platform signal, and the manual turn signal is turned on by the lever on the steering wheel.

[0039] In the above-mentioned safety monitoring and early warning system based on distance detection, the distance between three adjacent high-speed vehicles in the same lane can be monitored in real time. When the risk of rear-end collision occurs, the three vehicles can be warned in time, and the front vehicle can be assisted in self-rescue. Compared with the existing technology, it can effectively avoid the occurrence of rear-end collisions and greatly reduce the safety hazards of continuous rear-end collisions.

[0040] A safety monitoring and early warning system based on distance detection, the early warning method of which comprises the following steps:

[0041] S1, such as Figure 3 First, the three adjacent cars in the same lane are recorded as car A, car B and car C in the direction of travel, among which car B is specifically the car that has rear-ended the car in front;

[0042] S2. The two infrared rangefinders at the front and rear of each vehicle monitor the distance between the adjacent vehicles in real time, and feed back the detected distance data to the corresponding central control platform in real time. The comparison module compares the distance data with the safe following distance in real time. When the distance between the vehicles is lower than the safe following distance, the timing module starts timing, and the in-vehicle alarms of vehicles A and B sound an alarm, alerting the driver of vehicle A that there is a risk of rear-end collision with vehicle B behind, and at the same time alerting the driver of vehicle B that there is a risk of rear-end collision with vehicle A in front, so that the driver of vehicle B can slow down and increase the distance in time;

[0043] S3, such as Figure 4-Figure 5 When the distance between cars A and B has not increased to the safe following distance after the timing module reaches the timing threshold, the central control platform warns the driver of car A again through the in-car alarm that he can control the manual turn signal to light up by the lever to warn of lane change. At this time, after the high-definition camera on car B captures the manual turn signal of car A lighting up, the central control platform directly controls the intelligent turn signal of car B to light up and triggers the rear alarm, thereby warning car C and vehicles in the adjacent lanes that there is a risk of rear-end collision. On the one hand, it warns the driver of car C to slow down in time to effectively avoid continuous rear-end collisions. On the other hand, it warns the vehicles in the adjacent lanes to slow down and give way to car A, which is convenient for car A to save itself. After car A temporarily changes lanes, it is not easy to rear-end the vehicles in the adjacent lanes, thereby achieving self-rescue of car A and eliminating the risk of being rear-ended by car B.

[0044] The timing threshold of the timing module changes with the vehicle speed, and the two are inversely proportional. The specific threshold value can be verified by a technician in this field through a large number of experiments during specific implementation, so that under this time condition, vehicle A can have enough time to change lanes and save itself.

[0045] After the risk of vehicle A being rear-ended by vehicle B occurs in step S2, the calculation module estimates the time required for vehicle A to be rear-ended in real time based on the vehicle distance difference between the two vehicles in unit time and the real-time vehicle distance between the two vehicles. When the estimated time required for the rear-end collision is less than the threshold on the timing module, vehicle A immediately performs a lane change operation. When the estimated time required for the rear-end collision is greater than the threshold on the timing module, the lane change operation is performed with the threshold on the timing module as the time node.

[0046] like Figure 6The rear alarm device comprises a base 1 mounted on the rear of the vehicle, a hemispherical cover 2 located on the base 1, and an electric push rod 3 connected between the base 1 and the hemispherical cover 2. The extended end of the electric push rod 3 faces upward, and a plurality of evenly distributed flashing strips 4 are fixedly connected to the lower edge of the hemispherical cover 2. The surface of the flashing strips 4 is coated with a reflective coating. The outer shell of the electric push rod 3 is provided with an electromagnetic ring. The lower end of the flashing strip 4 is inlaid with an iron sheet, and the flashing strip 4 is made of a light and flexible material. When the electromagnetic ring is energized, a magnetic attraction is generated on the iron sheet. When the rear alarm device needs to sound an alarm, the electric push rod 3 can be controlled to extend first, so that the hemispherical cover 2 is separated from the base 1. The electromagnetic ring is then powered off, and the multiple flashing strips 4 are released. During the driving of the car, the multiple flashing strips 4 swing disorderly, and the reflective coating on the surface thereof can produce a certain reflective effect, so that the driver of the following car can timely find the alarm information. When the rear alarm needs to be closed, the electromagnetic ring can be controlled to be powered on, so as to absorb the bottom of the multiple flashing strips 4 and make them gather outside the electric push rod 3, and then the electric push rod 3 is controlled to shorten to reset the hemispherical cover 2. In order to ensure that the hemispherical cover 2 can be fully in contact with the base 1 and protect the internal components, the upper and lower ends of the electric push rod 3 are movably embedded in the base 1 and the hemispherical cover 2 respectively.

[0047] The real-time monitoring of the vehicle distance between three adjacent high-speed vehicles in the same lane can be carried out. When the risk of rear-end collision occurs, the three vehicles can be warned in time. First, the driver of car B that is about to rear-end car A will be warned. When he fails to take corresponding measures in time to eliminate the risk of rear-end collision, the driver of car A can be warned to change lanes to save himself. When the manual turn signal of car A lights up, the rear alarm and intelligent turn signal of car B can light up automatically, and then car C behind car B and vehicles in the adjacent lane can be warned that car A is at risk of being rear-ended and is about to change lanes, so that vehicles in the adjacent lane can slow down in time to avoid being rear-ended after changing lanes. Compared with the existing technology, it can realize the warning of possible rear-end collision risks before the rear-end collision, provide sufficient self-rescue time for the vehicle in front, effectively avoid rear-end collision, effectively avoid the occurrence of rear-end collision, and can greatly reduce the safety hazards of continuous rear-end collisions.

[0048] In addition, the implementation of this early warning system can significantly reduce the accident rate of road traffic and has obvious practicality for road traffic.

[0049] The second implementation method:

[0050] This implementation mode adds a simulation warning module on the basis of the first implementation mode, and the rest of the parts are consistent with the first implementation mode.

[0051] Figure 7-Figure 8It is shown that a safety monitoring and early warning system based on distance detection also includes a simulation early warning module and a locator installed in the vehicle. The locator and the central control platform are both connected to the traffic control system signal. The simulation early warning module includes a simulation unit integrated in the central control platform, and the simulation unit is connected to the central control platform signal. The traffic control system obtains the real-time positioning data of the running vehicle through the locator. When the distance between car A and car B running in the same direction is lower than the safe following distance plus 50-100 meters, the traffic control system synchronously shares the position information of each other with the hollow platforms of the two vehicles, so that car A and car B are in a pseudo-communication state. Based on the vehicle's navigation system, the driving conditions of car A and car B are simulated in real time on the display screen of the central control platform.

[0052] The development of existing map navigation can already realize real-scene navigation, but for each vehicle on the road, it is an independent individual and it is difficult to establish communication. In this embodiment, through the setting of a simulation warning module and the setting of a locator connected to the traffic control system, two vehicles traveling in the same direction on the same road and within a certain distance can share the driving related data of the two vehicles with each other, such as vehicle speed, driving distance between the two vehicles, estimated rear-end collision time, etc., through the traffic control system as the main control medium, so that the two establish pseudo communication. At this time, the simulation unit can simulate the driving condition of the other vehicle with this vehicle as a reference based on the shared information, and display the simulated image information on the display screen of the central control platform of this vehicle. For the driver, he can directly understand the real-time situation of the vehicle closer to him through his own display screen, and then avoid the risk of rear-end collision in time according to the situation, thereby greatly improving safety.

[0053] It is worth noting that when the distances between cars A and C in front and behind car B and car B are within the pseudo-communication distance range, for the simulation unit of car B, with car B as a reference, it can simulate the driving conditions of cars A and C at the same time and display them on the display screen.

[0054] In this embodiment, by connecting a single vehicle to the traffic control system of the traffic law enforcement part in the prior art, two adjacent vehicles can be pseudo-communicated according to the position information of the locator. Therefore, even in foggy weather, when visibility is low, the distance between adjacent vehicles can be directly shared. Even if the driver cannot directly and clearly see the vehicle in front or behind, he can have a clear understanding of the distance between vehicles, thereby greatly reducing the safety hazards in foggy weather. Compared with the first embodiment, this embodiment has a wider scope of application and better effects.

[0055] In foggy weather, the above-mentioned pseudo communication can be achieved when the distance between the front and rear vehicles is too close, so that the vehicles traveling on the corresponding road section are not prone to rear-end collisions or continuous rear-end collisions, which are safety hazards.

[0056] The third implementation method:

[0057] This implementation manner changes the arrangement of the rear vehicle alarm on the basis of the first implementation manner or the second implementation manner, and the rest of the embodiments remain the same as the first implementation manner or the second implementation manner.

[0058] Fig. 9 As shown, the base 1 includes a bottom plate 11 and a variable disk 12 mounted on the bottom plate 11 through an electric turntable. Fig.11 , a plurality of smooth changing grooves 101 distributed in a circular array are bored on the variable optical disc 12, a plurality of smooth changing grooves 101 are fixedly connected to the inner wall away from the electric push rod 3 with a fixed electrification block 51, a dynamic electrification block 52 is slidably connected inside the smooth changing grooves 101, a lower end of the flashing strip 4 is fixedly connected to the dynamic electrification block 52, a piezoelectric ceramic sheet is installed at one end of the fixed electrification block 51 and the dynamic electrification block 52 close to each other, an LED light strip is attached to the surface of the flashing strip 4, and the LED light strip is electrically connected to the corresponding piezoelectric ceramic sheet, when the base 1 and the hemispherical cover 2 are separated, as shown Fig.10 and Fig.12 The electric turntable can make the variable disc 12 and the parts on it rotate together. Due to the centrifugal effect, multiple dynamic starting blocks 52 move outward toward the fixed starting block 51 and collide with each other, thereby causing the piezoelectric ceramic sheets to collide with each other to generate current, so that the LED light strip on the surface of the flashing strip 4 is energized and lit. When in use, the electric turntable can be controlled to rotate discontinuously, and 3-5 seconds are detected between two adjacent rotations to make it flash, thereby better warning the driver of the following vehicle.

[0059] A plurality of adjacent fixed power-on blocks 51 form a light-changing group, and there are no less than three light-changing groups on the light-changing disk 12. The lengths of the plurality of fixed power-on blocks 51 in each light-changing group all change gradiently along the same direction, so that during one rotation of the electric turntable, the plurality of LED light strips corresponding to the light-changing group in each group are lit at staggered intervals, making the visual effect more obvious and further improving the warning effect on the driver.

[0060] It is also worth noting that the distribution range of the plurality of smooth grooves 101 on the variable optical disc 12 is smaller than the coverage range of the lower end surface of the hemispherical cover 2 on the surface of the variable optical disc 12;

[0061] The flash strip 4 is made of elastic material, and is in its original length when in a vertical state.

[0062] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A safety monitoring and early warning system based on spacing detection, characterized in that: It includes a central control platform on the car, the central control platform is signal-connected with a timing module, a calculation module, a comparison module and an early warning module, a high-definition camera and an infrared rangefinder are installed at the front of the car, an infrared rangefinder is also installed at the rear of the car, a speed sensor is installed in the body of the car, and the high-definition camera, two infrared rangefinders and the speed sensor are all signal-connected with the central control platform; The warning module includes an in-car alarm installed in the car cab, a rear alarm installed outside the car, and a manual turn signal and an intelligent turn signal installed at the rear of the car. The intelligent turn signal is connected to the central control platform signal, and the manual turn signal is turned on by the lever on the steering wheel; The rear-end alarm comprises a base (1) mounted on the rear of the vehicle, a hemispherical cover (2) located on the base (1), and an electric push rod (3) connected between the base (1) and the hemispherical cover (2), wherein the extended end of the electric push rod (3) faces upward, and a plurality of evenly distributed flashing strips (4) are fixedly connected to the lower edge of the hemispherical cover (2), and the surface of the flashing strips (4) is coated with a reflective coating; The early warning method of the security monitoring early warning system comprises the following steps: S1. First, the three adjacent cars in the same lane are recorded as car A, car B and car C in the direction of travel, among which car B is specifically the car that has rear-ended the car in front; S2. The two infrared rangefinders at the front and rear of each vehicle monitor the distance between the adjacent vehicles in real time, and feed back the detected distance data to the corresponding central control platform in real time. The comparison module compares the distance data with the safe following distance in real time. When the distance between the vehicles is lower than the safe following distance, the timing module starts timing, and the in-vehicle alarms of vehicles A and B sound an alarm, alerting the driver of vehicle A that there is a risk of rear-end collision with vehicle B behind, and at the same time alerting the driver of vehicle B that there is a risk of rear-end collision with vehicle A in front, so that the driver of vehicle B can slow down and increase the distance in time; S3. When the distance between cars A and B still does not increase to the safe following distance after the timing module reaches the timing threshold, the central control platform warns the driver of car A again through the in-car alarm that he can control the manual turn signal to light up by the lever to warn the lane change. At this time, after the high-definition camera on car B captures the manual turn signal of car A lighting up, the central control platform directly controls the intelligent turn signal of car B to light up and triggers the rear alarm, thereby warning car C and vehicles in the adjacent lanes that there is a risk of rear-end collision with the front vehicle. On the one hand, it warns the driver of car C to slow down in time to effectively avoid continuous rear-end collisions. On the other hand, it warns the vehicles in the adjacent lanes to slow down and give way to car A, which is convenient for car A to save itself. After car A temporarily changes lanes, it is not easy to rear-end the vehicles in the adjacent lanes, thereby achieving self-rescue of car A and eliminating the risk of being rear-ended by car B.

2. A safety monitoring and early warning system based on distance detection according to claim 1, characterized in that: The outer shell of the electric push rod (3) is provided with an electromagnetic ring, the lower end of the flashing strip (4) is inlaid with an iron sheet, and the flashing strip (4) is made of a light and flexible material. When the electromagnetic ring is energized, it generates a magnetic attraction force on the iron sheet.

3. A safety monitoring and early warning system based on distance detection according to claim 1, characterized in that: The timing threshold of the timing module changes with the vehicle speed, and the two are inversely proportional.

4. The safety monitoring and early warning system based on distance detection according to claim 1 is characterized in that: After the risk of vehicle A being rear-ended by vehicle B occurs in step S2, the calculation module estimates the time required for vehicle A to be rear-ended in real time based on the vehicle distance difference between the two vehicles in unit time and the real-time vehicle distance between the two vehicles. When the estimated time required for the rear-end collision is less than the threshold on the timing module, vehicle A immediately performs a lane change operation. When the estimated time required for the rear-end collision is greater than the threshold on the timing module, the lane change operation is performed with the threshold on the timing module as the time node.

5. A safety monitoring and early warning system based on distance detection according to claim 4, characterized in that: It also includes a simulation warning module and a locator installed in the vehicle. The locator and the central control platform are both connected to the traffic control system signal. The simulation warning module includes a simulation unit integrated in the central control platform, and the simulation unit is connected to the central control platform signal.

6. A safety monitoring and early warning system based on distance detection according to claim 5, characterized in that: The traffic control system obtains the real-time positioning data of the running vehicles through the locator. When the distance between car A and car B running in the same direction is less than the safe following distance plus 50-100 meters, the traffic control system synchronously shares the location information of each other with the hollow platforms of the two vehicles, so that car A and car B are in a pseudo-communication state. Based on the vehicle's navigation system, the driving conditions of car A and car B are simulated in real time on the display screen of the central control platform.

7. The safety monitoring and early warning system based on distance detection according to claim 2 is characterized in that: The base (1) comprises a bottom plate (11) and a variable disc (12) mounted on the bottom plate (11) via an electric turntable, the variable disc (12) being provided with a plurality of variable smooth grooves (101) distributed in a circular array, a plurality of the variable smooth grooves (101) being fixedly connected to an inner wall away from the electric push rod (3) with a fixed electrification block (51), a moving electrification block (52) being slidably connected inside the variable smooth grooves (101), the lower end of the flashing strip (4) being fixedly connected to the moving electrification block (52), the ends of the fixed electrification block (51) and the moving electrification block (52) being close to each other being both provided with piezoelectric ceramic sheets, an LED light strip being attached to the surface of the flashing strip (4), and the LED light strip being electrically connected to the corresponding piezoelectric ceramic sheet.

8. The safety monitoring and early warning system based on distance detection according to claim 7 is characterized in that: A plurality of sequentially adjacent fixed electrification blocks (51) form a light-changing group, and the number of light-changing groups on the light-changing disk (12) is no less than three, and the lengths of the plurality of fixed electrification blocks (51) in each light-changing group all change in a gradient manner along the same direction.

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