Vehicle collision sensor and collision response method and system

Abstract

The invention discloses a vehicle collision sensor and a collision response method and system. The vehicle collision sensor comprises a first permanent magnet, a second permanent magnet and a conductor rod, and the first permanent magnet and the second permanent magnet are both fixed to a first component on a vehicle body; the conductor rod is fixed on a second part on the vehicle body, and the conductor rod is positioned in a magnetic field formed between the first permanent magnet and the second permanent magnet; when the relative position of the first component and the relative position of the second component are changed due to collision of vehicles, motional electromotive force can be generated in the conductor rod. The permanent magnetic field formed by the first permanent magnet and the second permanent magnet is matched with the conductor rod to form the collision sensor, continuous electric energy consumption is not needed, vehicle energy consumption can be saved, and the endurance of a new energy vehicle model is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle collision, and in particular to a vehicle collision sensor, a collision response method and a system. Background Art

[0002] The collision sensor is a control signal input device in the airbag system. Its function is to detect the intensity signal of the car collision when a car collides, and input the signal into the airbag computer. The airbag computer determines whether to detonate the inflation element to inflate the airbag based on the signal from the collision sensor.

[0003] Most existing collision sensors use magnetic collision sensors, which use coils to generate magnetic fields, and the magnetic sensors detect changes in the magnetic field to achieve collision detection. Magnetic collision sensors usually need to be powered by a stable DC power supply, which has high requirements on the performance of the power supply, and they need to continuously consume power to generate a magnetic field when working, which causes energy consumption for new energy vehicles and affects the endurance. Summary of the invention

[0004] The problem to be solved by the present invention is to overcome the defects of the prior art and provide a vehicle collision sensor, a collision response method and a system. In the vehicle collision sensor, a permanent magnet is used to form a magnetic field, and continuous consumption of electric energy is not required.

[0005] In order to solve the above technical problems, the present invention provides a vehicle collision sensor, including a first permanent magnet, a second permanent magnet and a conductor bar, wherein the first permanent magnet and the second permanent magnet are both fixed on a first component on a vehicle body; the conductor bar is fixed on a second component on the vehicle body, and the conductor bar is located in a magnetic field formed between the first permanent magnet and the second permanent magnet; when a vehicle collides and causes a relative position change between the first component and the second component, a motional electromotive force can be generated in the conductor bar.

[0006] In the above vehicle collision sensor, the permanent magnetic field formed by the first permanent magnet and the second permanent magnet, when the car collides and the relative position of the first component and the second component changes, the conductor rod will produce relative magnetic field movement, thereby cutting the magnetic flux lines to generate motional electromotive force, that is, voltage. This voltage signal can reflect the collision intensity, and then corresponding response measures can be taken through the signal to reduce the collision loss. The vehicle collision sensor uses a purely physical structure to form a fixed permanent magnetic field, which has no effect on the electronic components in the car and does not require additional power supply.

[0007] Furthermore, the first component is a front anti-collision beam, and the second component is a front bumper skin, so that the vehicle collision sensor is used to monitor a head-on collision of the vehicle.

[0008] Furthermore, the first permanent magnet and the second permanent magnet are both in the form of flat plates, fixed on the top of the front anti-collision beam, and the plates with opposite magnetic poles are arranged parallel to form a magnetic field for placing the conductor rod. Preferably, the plates of the first permanent magnet and the second permanent magnet are perpendicular to the vertical direction of the vehicle body.

[0009] By arranging two plate-shaped permanent magnets in parallel and facing each other on the plate surface, a uniform magnetic field with nearly vertical magnetic flux lines can be formed, so that the motional electromotive force generated by the conductor rod cutting the magnetic flux lines is directly proportional to the speed, making it easy to judge the collision intensity through the motional electromotive force.

[0010] Furthermore, the conductor bar is made of conductive material, is in a rod shape, and is arranged transversely of the vehicle body. Preferably, the width of the conductor bar in the transverse direction of the vehicle body is equal to the width of the front anti-collision beam.

[0011] By designing the conductor rod to be arranged transversely along the vehicle body and having a width equal to the width of the front anti-collision beam 4, the effective cutting length L is increased, and a larger motional electromotive force is generated for easy monitoring.

[0012] Furthermore, a plurality of support rods are arranged on the inner side wall of the front bumper skin at lateral intervals along the vehicle body; one end of the support rod is fixedly connected to the front bumper skin, and the other end is fixedly connected to the conductor rod, so that a plurality of fixed connection points with the conductor rod are formed on the conductor rod at lateral intervals along the vehicle body.

[0013] By arranging multiple support rods at intervals along the lateral direction of the vehicle body, deformation at any position of the front bumper skin can be more fully transmitted to the conductor rod, and the generated voltage signal is more obvious, which is convenient for monitoring.

[0014] In order to solve the above technical problems, the present invention provides, on the other hand, a collision response method of a vehicle collision sensor according to any one of claims 1 to 5, wherein in the process of generating a motional electromotive force in the conductor bar, the method comprises:

[0015] When the motional electromotive force starts to be generated in the conductor rod, the vehicle is controlled to issue a safety warning, and a reminder is issued to the vehicle driver and the surrounding environment;

[0016] When the motional electromotive force generated in the conductor bar reaches a set voltage value or the duration reaches a set time value, the vehicle is controlled to pre-tighten the seat belt;

[0017] When the motional electromotive force generated in the conductor rod exceeds a set voltage value and the duration exceeds a set time value, the vehicle is controlled to activate the safety airbag at a set position.

[0018] In the above-mentioned collision response method, different responses are made through the duration of each voltage generation and the maximum value of the generated voltage. The first level of response is when the collision just occurs, that is, when the motional electromotive force begins to be generated in the conductor rod, a safety warning is immediately issued, and a reminder is issued to the vehicle driver and the surrounding environment in time; the second level is when the collision has proceeded to a certain extent, that is, when the motional electromotive force reaches the set voltage value or the duration reaches the set time value, the seat belt pre-tightening continues on the basis of the safety warning that has been issued; the third level is when it is detected that the collision intensity is very large, that is, the motional electromotive force generated and the duration both reach the set values, and the vehicle is controlled to activate the airbag at the set position.

[0019] Furthermore, the method also includes: controlling the vehicle to turn off the safety warning after a set time has passed since a motional electromotive force is generated in the conductor rod.

[0020] In order to solve the above technical problems, the present invention also provides a collision response system based on a vehicle collision sensor, characterized in that it includes:

[0021] A collection unit, used for monitoring the voltage of the conductor rod;

[0022] A control unit is used to obtain the situation of the motional electromotive force generated in the conductor rod according to the monitoring result of the acquisition unit, and in the process of generating a motional electromotive force in the conductor rod:

[0023] When the motional electromotive force starts to be generated in the conductor rod, the vehicle is controlled to issue a safety warning, and a reminder is issued to the vehicle driver and the surrounding environment;

[0024] When the motional electromotive force generated in the conductor bar reaches a set voltage value or the duration reaches a set time value, the vehicle is controlled to pre-tighten the seat belt;

[0025] When the motional electromotive force generated in the conductor rod exceeds a set voltage value and the duration exceeds a set time value, the vehicle is controlled to activate the safety airbag at a set position.

[0026] In summary, the above-mentioned vehicle collision sensor, collision response method and system are used. The vehicle collision sensor uses permanent magnets to form a fixed permanent magnetic field, which has no effect on electronic components in the vehicle and does not require additional power supply. The collision response method continuously monitors the generation process of motional electromotive force and continuously determines the collision intensity, and makes corresponding responses when different conditions are met, thereby reducing collision losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In the attached picture:

[0028] Figure 1 The figure is a schematic diagram of the structure of the vehicle collision sensor of the present invention.

[0029] Figure 2 The figure is a schematic diagram of the conductor rod fixing structure of the vehicle collision sensor of the present invention.

[0030] In the figure, 1, the first permanent magnet; 2, the second permanent magnet; 3, the conductor rod; 4, the front anti-collision beam; 5, the front bumper skin; 51, the support rod. DETAILED DESCRIPTION

[0031] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0032] Example 1

[0033] Figure 1 FIG. 1 shows a vehicle collision sensor of the present invention. Figure 1 As shown, the vehicle collision sensor includes a first permanent magnet 1, a second permanent magnet 2 and a conductor bar 3. The first permanent magnet 1 and the second permanent magnet 2 are both fixed on a first component on the vehicle body; the conductor bar 3 is fixed on a second component on the vehicle body, and the conductor bar 3 is located in a magnetic field formed between the first permanent magnet 1 and the second permanent magnet 2; when a vehicle collision occurs and causes a relative position change between the first component and the second component, a motional electromotive force can be generated in the conductor bar 3.

[0034] When the car collides and the relative position of the first component and the second component changes, the conductor bar 3 will produce relative magnetic field movement in the permanent magnetic field formed by the first permanent magnet 1 and the second permanent magnet 2, thereby cutting the magnetic flux lines to generate motional electromotive force, that is, voltage. This voltage signal can reflect the intensity of the collision, and then corresponding response measures can be taken through the signal to reduce the collision loss. The vehicle collision sensor uses a purely physical structure to form a magnetic field, which has no effect on the electronic components in the car and does not require additional power supply.

[0035] The first component and the second component on the specific vehicle body can be any two components on the vehicle body that can change relative position when a collision occurs, such as: front bumper skin 5 and front anti-collision beam 4, rear bumper skin and rear anti-collision beam, fender and fender bracket, etc. The following description takes the first component as the front anti-collision beam 4 and the second component as the front bumper skin 5 to illustrate the specific structure of the vehicle collision sensor.

[0036] Bumpers are safety devices used on cars or some vehicles to absorb and mitigate external impact forces and protect the front and rear parts of the car body. It is usually composed of three parts: outer panels, buffer materials and crossbeams. The outer panels are the external skins. The outer panels and buffer materials are usually made of plastic. The crossbeams are stamped into U-shaped grooves with plates. At present, cars usually hide anti-collision beams inside the bumpers. The crossbeams are anti-collision beams. That is, when the elastic material can no longer buffer the energy under the action of a large impact force, the anti-collision beams really play a role in protecting the occupants in the car. The anti-collision beam is a device used to reduce the absorption of collision energy when the vehicle is hit. It is composed of a main beam, an energy absorption box, and a mounting plate connected to the car. The main beam and the energy absorption box are fixed at the end of the longitudinal beam of the vehicle body. It can effectively absorb the collision energy when the vehicle collides at a low speed, and minimize the damage to the longitudinal beam of the vehicle body caused by the impact force. In this way, it plays a protective role on the vehicle.

[0037] When the first permanent magnet 1, the second permanent magnet 2 and the conductor rod 3 are actually fixedly installed, the space arrangement between the bumper skin 5 and the top of the front anti-collision beam 4 is different due to different vehicle models. When the vehicle collision sensor is modified on an existing vehicle, it can be flexibly arranged according to actual conditions. When a new vehicle model is developed, a position for installing the vehicle sensor can be reserved in advance during the design.

[0038] like Figure 1 As shown, the first permanent magnet 1 and the second permanent magnet 2 are both in the shape of a plate, fixed on the top of the front anti-collision beam 4, and the plate surfaces of the opposite magnetic poles are arranged parallel to each other to form a magnetic field for placing the conductor bar 3. For the convenience of arrangement, the plate surfaces of the first permanent magnet 1 and the second permanent magnet 2 can be made perpendicular to the vertical direction of the vehicle body. The conductor bar 3 is made of conductive material, in the shape of a rod, and arranged horizontally along the vehicle body.

[0039] The above arrangement structure makes the conductor bar 3 located in a uniform magnetic field with nearly vertical magnetic flux lines, and the bar body itself is also perpendicular to the magnetic flux lines. When relative movement occurs, based on the principle of motional electromotive force: E=BLV, where B is the magnetic flux density, L is the effective cutting length, and V is the speed of the conductor bar relative to the magnetic field, a larger motional electromotive force will be generated, which is convenient for subsequent signal monitoring. In addition, the front anti-collision beam 4 and the front bumper skin 5 are mainly subjected to the impact of a head-on collision of the vehicle, so the deformation of the front bumper skin 5 is mainly along the longitudinal direction of the vehicle, and the conductor bar 3 is arranged in the transverse direction. The entire bar body is basically all effective cutting length, saving the use of materials and space occupied by the conductor bar 3. The first permanent magnet 1 and the second permanent magnet 2 can be fixedly connected to the front anti-collision beam 4 by setting a fixed bracket.

[0040] In order to further increase the generated motional electromotive force voltage signal, the width of the conductor rod 3 along the transverse direction of the vehicle body is equal to the width of the front anti-collision beam 4, thereby increasing the effective cutting length L and generating a larger motional electromotive force.

[0041] like Figure 2As shown, a plurality of support rods 51 are arranged on the inner wall of the front bumper skin 5 at lateral intervals along the vehicle body; one end of the support rod 51 is fixedly connected to the front bumper skin 5, and the other end is fixedly connected to the conductor rod 3, so that a plurality of fixed connection points with the support rod 51 are formed on the conductor rod 3 at lateral intervals along the vehicle body.

[0042] Since the conductor bar 3 is relatively long, the conductor bar 3 is fixedly supported in the magnetic field formed between the first permanent magnet 1 and the second permanent magnet 2 by a plurality of support rods 51, and the support is stable. Moreover, the support rods 51 are arranged at intervals along the lateral direction of the vehicle body, so that any deformation of the front bumper skin 5 will be more fully transmitted to the conductor bar 3, making the generated voltage signal more obvious and convenient for monitoring. In addition, five fixed connection points with the support rods 51 can be formed on the conductor bar 3 at even intervals along the lateral direction of the vehicle body.

[0043] When in use, when the collision causes the conductor bar 3 to move relatively in the permanent magnetic field generated by the first permanent magnet 1 and the second permanent magnet 2 to cut the magnetic flux lines, a motional electromotive force, i.e., a voltage, will be generated in the conductor bar 3; when the car has a head-on or rear-end collision, the collision intensity signal is detected and input into the airbag computer. The airbag computer determines whether to detonate the inflation element to inflate the airbag based on the signal of the collision sensor, thereby forming a buffer cushion between the driver and the steering wheel, and between the front seat occupant and the dashboard to avoid injuries caused by hard collisions.

[0044] In addition, it should be noted that when the first component is a rear anti-collision beam and the second component is a rear bumper skin, the first permanent magnet 1, the second permanent magnet 2 and the conductor rod 3 are similar to the above-mentioned structure and installation structure.

[0045] Example 2

[0046] The present invention provides a collision response method based on the above-mentioned vehicle collision sensor. When the front bumper skin 5 is deformed, the conductor bar 3 will follow and move, thereby cutting the magnetic flux lines to generate voltage. The greater the deformation of the front bumper skin 5, the greater the distance the conductor bar 3 moves; the faster the deformation of the front bumper skin 5, the faster the conductor bar 3 moves. The final reflection on the voltage signal has two indicators: the duration of the generated voltage and the maximum value of the generated voltage. Therefore, in the process of generating a motional electromotive force in the conductor bar 3, the following three situations are included.

[0047] ① When the motional electromotive force begins to be generated in the conductor bar 3, the vehicle is controlled to issue a safety warning and a reminder is issued to the vehicle driver and the surrounding environment. When the motional electromotive force is just generated, it means that a collision has occurred. Although it is at a low risk at this time, it is still necessary to issue a safety warning immediately to promptly remind the vehicle driver and the surrounding environment.

[0048] The methods of safety warning include: controlling the vehicle's double flashes to turn on, controlling the vehicle's horn to sound, controlling the vehicle's central control to sound an alarm, etc.

[0049] ② When the motional electromotive force generated in the conductor bar 3 reaches a set voltage value or the duration reaches a set time value, the vehicle is controlled to pre-tighten the seat belt.

[0050] When the generated electromotive force and duration reach the set value, it indicates that the collision has progressed to a certain extent and is in moderate danger. On the basis of the safety warning, the seat belts are pre-tightened to prepare for possible collisions and protect the occupants. The set voltage value and the set time value are obtained and given by the specific vehicle and vehicle collision sensor calibration.

[0051] ③ When the motional electromotive force generated in the conductor rod 3 reaches a set voltage value and the duration reaches a set time value, the vehicle is controlled to activate the airbag at the set position.

[0052] When the generated motional electromotive force and duration both reach the set values, there are two situations: a. The motional electromotive force reaches the set voltage value, and the duration is not less than the set time value; b. The duration reaches the set time value, and the motional electromotive force reaches the set voltage value at a certain moment during the duration; this indicates that the collision intensity is detected to be very high and is in high danger. On the basis of safety warnings and seat belt pre-tensioning, the corresponding airbags are popped out to protect the occupants.

[0053] For example: the first permanent magnet 1 and the second permanent magnet 2 are fixed on the front anti-collision beam 4, the conductor rod 3 is fixed on the front bumper skin 5, and the corresponding collision is a head-on collision. Therefore, the triggered airbags mainly involve the safety airbag system in front of the vehicle. These airbags are quickly inflated and popped out when the vehicle has a head-on collision to protect the head and upper body of the driver and passengers, such as driver and passenger airbags, knee airbags, etc.

[0054] In addition, after a set time has passed since a motional electromotive force is generated in the conductor bar 3, the vehicle is controlled to turn off the safety warning. This method is executed each time a motional electromotive force is generated in the conductor bar 3, that is, it is executed in batches. After the motional electromotive force generated this time ends, after a set time, such as 1 minute, the vehicle response needs to be restored, mainly to restore the safety warning, because the warning reminder has been completed at this time and does not need to be continued.

[0055] Example 3

[0056] The present invention provides a collision response method based on the above-mentioned vehicle collision sensor, comprising: an acquisition unit, used to monitor the voltage of the conductor bar 3; a control unit, used to obtain the situation of motional electromotive force generated in the conductor bar 3 according to the monitoring result of the acquisition unit, and in the process of generating a motional electromotive force in the conductor bar 3: when the motional electromotive force begins to be generated in the conductor bar 3, control the vehicle to issue a safety warning, and issue a reminder to the vehicle driver and the surrounding environment; when the motional electromotive force generated in the conductor bar 3 reaches a set voltage value or the duration reaches a set time value, control the vehicle to pre-tighten the seat belt; when the motional electromotive force generated in the conductor bar 3 reaches a set voltage value or the duration reaches a set time value, control the vehicle to activate the safety airbag at a set position.

[0057] The acquisition unit can monitor the voltage by connecting the two ends of the conductor bar 3 through a wire. In the process of generating a motional electromotive force in the conductor bar 3, the control unit performs corresponding actions in the following three situations.

[0058] ① When the motional electromotive force begins to be generated in the conductor bar 3, the vehicle is controlled to issue a safety warning and a reminder is issued to the vehicle driver and the surrounding environment. When the motional electromotive force is just generated, it means that a collision has occurred. Although it is at a low risk at this time, it is still necessary to issue a safety warning immediately to promptly remind the vehicle driver and the surrounding environment.

[0059] The methods of safety warning include: controlling the vehicle's double flashes to turn on, controlling the vehicle's horn to sound, controlling the vehicle's central control to sound an alarm, etc.

[0060] ② When the motional electromotive force generated in the conductor bar 3 reaches a set voltage value or the duration reaches a set time value, the vehicle is controlled to pre-tighten the seat belt.

[0061] When the generated electromotive force and duration reach the set value, it indicates that the collision has progressed to a certain extent and is in moderate danger. On the basis of the safety warning, the seat belts are pre-tightened to prepare for possible collisions and protect the occupants. The set voltage value and the set time value are obtained and given by the specific vehicle and vehicle collision sensor calibration.

[0062] ③ When the motional electromotive force generated in the conductor rod 3 reaches a set voltage value and the duration reaches a set time value, the vehicle is controlled to activate the airbag at the set position.

[0063] When the generated motional electromotive force and duration both reach the set values, there are two situations: a. The motional electromotive force reaches the set voltage value, and the duration is not less than the set time value; b. The duration reaches the set time value, and the motional electromotive force reaches the set voltage value at a certain moment during the duration; this indicates that the collision intensity is very large and is in high danger. On the basis of safety warnings and seat belt pre-tensioning, the corresponding airbags will pop out to protect the occupants.

[0064] For example: the first permanent magnet 1 and the second permanent magnet 2 are fixed on the front anti-collision beam 4, the conductor rod 3 is fixed on the front bumper skin 5, and the corresponding collision is a head-on collision. Therefore, the triggered airbags mainly involve the safety airbag system in front of the vehicle. These airbags are quickly inflated and popped out when the vehicle has a head-on collision to protect the head and upper body of the driver and passengers, such as driver and passenger airbags, knee airbags, etc.

[0065] In addition, after a set time has passed since a motional electromotive force is generated in the conductor bar 3, the vehicle is controlled to turn off the safety warning. This method is executed each time a motional electromotive force is generated in the conductor bar 3, that is, it is executed in batches. After the motional electromotive force generated this time ends, after a set time, such as 1 minute, the vehicle response needs to be restored, mainly to restore the safety warning, because the warning reminder has been completed at this time and does not need to be continued.

[0066] During use, when a collision causes the conductor rod 3 to move relative to each other in the permanent magnetic field generated by the first permanent magnet 1 and the second permanent magnet 2 and cut the magnetic lines of force, the acquisition unit monitors that a motional electromotive force will be generated in the conductor rod 3, and the control unit immediately controls the vehicle to issue a safety warning and reminds the vehicle driver and the surrounding environment, such as turning on the double flash and honking the horn; then the motional electromotive force generated is continuously monitored, and when the motional electromotive force generated in the conductor rod 3 reaches a set voltage value or the duration reaches a set time value, the vehicle is immediately controlled to pre-tighten the seat belt; when the motional electromotive force generated in the conductor rod 3 exceeds the set voltage value and the duration exceeds the set time value, the vehicle is controlled to activate the airbag at the set position.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit its protection scope. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that after reading the present invention, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the invention, but these changes, modifications or equivalent substitutions are all within the protection scope of the pending claims of the invention.

Claims

1. A vehicle collision sensor, characterized in that: The vehicle comprises a first permanent magnet (1), a second permanent magnet (2) and a conductor bar (3), wherein the first permanent magnet (1) and the second permanent magnet (2) are both fixed on a first component of a vehicle body; the conductor bar (3) is fixed on a second component of the vehicle body, and the conductor bar (3) is located in a magnetic field formed between the first permanent magnet (1) and the second permanent magnet (2); When a collision occurs in the vehicle and causes a relative position change between the first component and the second component, a motional electromotive force can be generated in the conductor bar (3).

2. A vehicle collision sensor according to claim 1, characterized in that: The first component is a front anti-collision beam (4), and the second component is a front bumper skin (5).

3. A vehicle collision sensor according to claim 2, characterized in that: The first permanent magnet (1) and the second permanent magnet (2) are both in the form of flat plates, fixed on the top of the front anti-collision beam (4), and the plates with opposite poles are arranged in parallel to form a magnetic field for placing the conductor rod (3).

4. A vehicle collision sensor according to claim 3, characterized in that: The plate surfaces of the first permanent magnet (1) and the second permanent magnet (2) are perpendicular to the vertical direction of the vehicle body.

5. The vehicle collision sensor according to claim 2, characterized in that: The conductor bar (3) is made of conductive material, is in a rod shape, and is arranged transversely along the vehicle body.

6. The vehicle collision sensor according to claim 5, characterized in that: The width of the conductor bar (3) in the transverse direction of the vehicle body is equal to the width of the front anti-collision beam (4).

7. The vehicle collision sensor according to claim 5, characterized in that: A plurality of support rods (51) are arranged on the inner side wall of the front bumper skin (5) at intervals along the lateral direction of the vehicle body; one end of the support rod (51) is fixedly connected to the front bumper skin (5), and the other end is fixedly connected to the conductor rod (3), so that a plurality of fixed connection points with the conductor rod (3) are formed on the conductor rod (3) at intervals along the lateral direction of the vehicle body.

8. A collision response method based on the vehicle collision sensor according to any one of claims 1 to 7, characterized in that: The process of generating a primary motional electromotive force in the conductor bar (3) includes: When motional electromotive force begins to be generated in the conductor rod (3), the vehicle is controlled to issue a safety warning, and a reminder is issued to the vehicle driver and the surrounding environment; When the motional electromotive force generated in the conductor bar (3) reaches a set voltage value or the duration reaches a set time value, the vehicle is controlled to pre-tighten the seat belt; When the motional electromotive force generated in the conductor rod (3) reaches a set voltage value and the duration reaches a set time value, the vehicle is controlled to activate the safety airbag at a set position.

9. A collision response method according to claim 8, characterized in that: Also includes: After a set time has passed since a motional electromotive force is generated once in the conductor rod (3), the vehicle is controlled to shut down the safety warning.

10. A collision response system based on the vehicle collision sensor according to any one of claims 1 to 7, characterized in that: include: A collection unit, used for monitoring the voltage of the conductor rod (3); A control unit is used to obtain the situation of the motional electromotive force generated in the conductor bar (3) according to the monitoring result of the acquisition unit, and in the process of generating a motional electromotive force in the conductor bar (3): When motional electromotive force begins to be generated in the conductor rod (3), the vehicle is controlled to issue a safety warning, and a reminder is issued to the vehicle driver and the surrounding environment; When the motional electromotive force generated in the conductor bar (3) reaches a set voltage value or the duration reaches a set time value, the vehicle is controlled to pre-tighten the seat belt; When the motional electromotive force generated in the conductor rod (3) reaches a set voltage value and the duration reaches a set time value, the vehicle is controlled to activate the safety airbag at a set position.

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