CN119142283B - Vehicle collision sensor, collision response method and system - Google Patents
Vehicle collision sensor, collision response method and systemInfo
- Publication number
- CN119142283B CN119142283B CN202411349418.3A CN202411349418A CN119142283B CN 119142283 B CN119142283 B CN 119142283B CN 202411349418 A CN202411349418 A CN 202411349418A CN 119142283 B CN119142283 B CN 119142283B
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- China
- Prior art keywords
- vehicle
- conductor bar
- permanent magnet
- collision
- electromotive force
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
- B60Q1/52—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking for indicating emergencies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q5/00—Arrangement or adaptation of acoustic signal devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/48—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds
- B60R19/483—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds with obstacle sensors of electric or electronic type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Human Computer Interaction (AREA)
- Air Bags (AREA)
Abstract
本发明公开了一种车辆碰撞传感器、碰撞响应方法及系统。该车辆碰撞传感器，包括第一永磁体、第二永磁体和导体棒，所述第一永磁体和所述第二永磁体均固定在车身上的第一部件上；所述导体棒固定在车身上的第二部件上，且所述导体棒位于所述第一永磁体和所述第二永磁体之间形成的磁场内；当车辆发生碰撞使所述第一部件和所述第二部件产生相对位置变化时，所述导体棒内能够产生动生电动势。通过第一永磁体和第二永磁体形成的永磁场，配合导体棒构成碰撞传感器，不需要持续的消耗电能，有助于节约车辆能耗，提高新能源车型的续航。
The present invention discloses a vehicle collision sensor, collision response method, and system. The vehicle collision sensor includes a first permanent magnet, a second permanent magnet, and a conductor rod. The first permanent magnet and the second permanent magnet are both fixed to a first component on the vehicle body; the conductor rod is fixed to a second component on the vehicle body, and the conductor rod is located in the magnetic field formed between the first permanent magnet and the second permanent magnet; when a vehicle collision causes the relative position of the first component and the second component to change, a 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, in conjunction with the conductor rod, forms a collision sensor, which does not require continuous consumption of electrical energy, helps save vehicle energy consumption, and improves the endurance of new energy vehicles.
Description
Technical Field
The invention relates to the technical field of vehicle collision, in particular to a vehicle collision sensor, a collision response method and a system.
Background
The collision sensor is a control signal input device in the air bag system, and is used for detecting the intensity signal of the collision of the automobile by the collision sensor and inputting the signal into the air bag computer, and the air bag computer judges whether to detonate the inflating element to inflate the air bag according to the signal of the collision sensor.
In the conventional crash sensor, a magnetic crash sensor is often used, a magnetic field is generated by a coil, and a magnetic sensor detects the change of the magnetic field, thereby realizing the crash detection. The magnetic collision sensor usually needs to be powered by a stable direct-current power supply, has high performance requirements on the power supply, and needs to continuously consume electricity to generate a magnetic field during working, so that energy consumption is brought to new energy vehicle types, and the cruising is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a vehicle collision sensor, a collision response method and a system.
In order to solve the technical problems, the invention provides a vehicle collision sensor which comprises a first permanent magnet, a second permanent magnet and a conductor bar, wherein the first permanent magnet and the second permanent magnet are fixed on a first part on a vehicle body, the conductor bar is fixed on a second part on the vehicle body and is positioned in a magnetic field formed between the first permanent magnet and the second permanent magnet, and when a vehicle collides, relative position changes are generated between the first part and the second part, dynamic electromotive force can be generated in the conductor bar.
In the vehicle collision sensor, when the relative position of the first component and the second component is changed due to the fact that the first permanent magnet and the second permanent magnet form a permanent magnetic field, the conductor bar moves relative to the magnetic field, so that the magnetic induction line is cut to generate dynamic electromotive force, namely voltage, a voltage signal can reflect the collision strength, and corresponding response measures can be made through the signal, so that collision loss is reduced. The vehicle collision sensor adopts a pure physical structure to form a permanent magnetic field which is fixed and unchanged, has no influence on electronic components in the vehicle, and does not need to adopt additional power supply.
Further, the first component is a front impact beam and the second component is a front bumper skin, such that the vehicle impact sensor is configured to monitor a frontal impact condition of the vehicle.
Furthermore, the first permanent magnet and the second permanent magnet are both in a flat plate shape and fixed at the top of the front anti-collision beam, and the plate surfaces of the different-name magnetic poles are parallel and opposite to each other to form a magnetic field for placing the conductor bars. Preferably, the plate surfaces of the first permanent magnet and the second permanent magnet are vertical to the vehicle body.
Through the two plate-shaped permanent magnets with parallel and opposite plate surfaces, a uniform magnetic field similar to the vertical magnetic induction line can be formed, so that the dynamic electromotive force generated by the conductor bar cutting magnetic induction line is in a proportional relation with the speed, and the collision strength can be conveniently judged through the dynamic electromotive force.
Further, the conductor bars are made of conductive materials, are rod-shaped and are arranged along the transverse direction 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 bumper beam.
Through the design conductor bar along automobile body transverse arrangement, and the width equals the width of preceding crashproof roof beam 4, improves effective cutting length L, produces bigger dynamic electromotive force and is convenient for monitor.
Furthermore, a plurality of support rods are arranged on the inner side wall of the front bumper skin at intervals along the transverse direction of the vehicle body, one end of each support rod is fixedly connected with the front bumper skin, the other end of each support rod is fixedly connected with the conductor bar, and a plurality of fixed connection points with the conductor bar are formed on the conductor bar at intervals along the transverse direction of the vehicle body.
Through setting up a plurality of bracing pieces along the horizontal interval of automobile body for the optional position deformation of front bumper skin will be more abundant transmit for the conductor stick, the voltage signal of production is more obvious, the monitoring of being convenient for.
To solve the above technical problem, another aspect of the present invention provides a collision response method of a vehicle collision sensor according to any one of claims, wherein the method includes:
when the electromotive force starts to be generated in the conductor bar, controlling the vehicle to perform safety early warning, and sending a prompt to a vehicle driver and the surrounding environment;
When the electromotive force generated in the conductor bar reaches a set voltage value or the duration reaches a set time value, controlling the vehicle to pretighten the safety belt;
And when the electromotive force generated in the conductor bar reaches an over-set voltage value and the duration reaches an over-set time value, controlling the vehicle to activate the safety airbag at the set position.
In the collision response method, different responses are carried out through the duration time of each time of voltage generation and the maximum value of voltage generation, the first-stage response is that when the collision just happens, namely when the generation of the dynamic electromotive force in the conductor bar begins, a safety early warning is immediately sent out, and prompt is timely sent out to a vehicle driver and the surrounding environment, the second-stage response is that the collision is carried out to a certain extent, namely, the dynamic electromotive force reaches a set voltage value or the duration time reaches a set time value, the safety belt pre-tightening is continued on the basis of the safety early warning, and the third-stage response is that the collision strength is detected to be very high, namely, the generated dynamic electromotive force reaches a set value and the duration time reaches a set value, and the safety air bag at the set position is controlled to be activated by the vehicle.
Further, the method further comprises the step of controlling the vehicle to close the safety precaution after the set time of the primary electromotive force generated in the conductor bar is ended.
In order to solve the above technical problem, a further aspect of the present invention provides a collision response system based on a vehicle collision sensor, which is characterized by comprising:
the acquisition unit is used for monitoring the voltage of the conductor bar;
The control unit is used for acquiring the situation of generating the dynamic electromotive force in the conductor bar according to the monitoring result of the acquisition unit, and generating primary dynamic electromotive force in the conductor bar:
when the electromotive force starts to be generated in the conductor bar, controlling the vehicle to perform safety early warning, and sending a prompt to a vehicle driver and the surrounding environment;
When the electromotive force generated in the conductor bar reaches a set voltage value or the duration reaches a set time value, controlling the vehicle to pretighten the safety belt;
And when the electromotive force generated in the conductor bar reaches an over-set voltage value and the duration reaches an over-set time value, controlling the vehicle to activate the safety airbag at the set position.
In summary, the vehicle collision sensor, the collision response method and the system adopt the permanent magnet to form a permanent magnetic field which is invariable, have no influence on electronic components in the vehicle, and do not need to adopt additional power supply.
Drawings
In the drawings:
FIG. 1 is a schematic view of a vehicle crash sensor according to the present invention.
Fig. 2 is a schematic view of a conductor bar fixing structure of the vehicle collision sensor of the present invention.
In the figure, 1, a first permanent magnet, 2, a second permanent magnet, 3, conductor bars, 4, a front anti-collision beam, 5, a front bumper skin, 51 and a support rod.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present invention, but is not intended to limit the present invention.
Example 1
Fig. 1 shows a vehicle collision sensor of the present invention. As shown in fig. 1, the vehicle collision sensor 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 fixed on a first part on a vehicle body, the conductor bar 3 is fixed on a second part on the vehicle body, the conductor bar 3 is positioned in a magnetic field formed between the first permanent magnet 1 and the second permanent magnet 2, and when the first part and the second part generate relative position change due to the collision of a vehicle, dynamic electromotive force can be generated in the conductor bar 3.
When the automobile collides to enable the relative positions of the first part and the second part to change, the conductor bar 3 generates relative magnetic field movement in the permanent magnetic field formed by the first permanent magnet 1 and the second permanent magnet 2, so that the magnetic induction line is cut to generate dynamic electromotive force, namely voltage, a voltage signal can reflect the collision strength, and corresponding response measures can be made through the signal to reduce the collision loss. The vehicle collision sensor adopts a pure physical structure to form a magnetic field, has no influence on electronic components in the vehicle, and does not need to adopt additional power supply.
The first component and the second component on the vehicle body can be any two components on the vehicle body, which can change relative positions during collision, for example, a front bumper skin 5 and a front bumper beam 4, a rear bumper skin and a rear bumper beam, a fender and a fender bracket, and the like. The specific structure of the collision sensor for the own vehicle will be described below with the first member as the front impact beam 4 and the second member as the front bumper skin 5.
Bumpers are safety devices on automobiles or some vehicles that are used to absorb and dampen external impact forces and to protect the front and rear portions of the vehicle body. The automobile anti-collision beam is characterized by comprising an outer plate, a buffering material and a beam, wherein the outer plate is an outer skin, the outer plate and the buffering material are made of plastics, the beam is punched into a U-shaped groove by plates, an anti-collision beam is usually hidden in the bumper at present, the beam is the anti-collision beam, namely, under the action of large impact force, when the elastic material cannot buffer energy, the anti-collision beam really plays a role in protecting passengers in the automobile. The anti-collision beam is a device for absorbing collision energy when a vehicle is collided, and consists of a main beam, an energy absorption box and a mounting plate connected with the vehicle, wherein the main beam and the energy absorption box are fixed at the end part of a longitudinal beam of the vehicle body, can effectively absorb the collision energy when the vehicle collides at a low speed, and reduce the damage of the impact force to the longitudinal beam of the vehicle body as much as possible, thereby playing the role of protecting the vehicle.
In fact, when the first permanent magnet 1, the second permanent magnet 2 and the conductor bars 3 are fixedly installed, the space arrangement between the bumper skin 5 and the top of the front anti-collision beam 4 is different from each other due to different vehicle types, when the vehicle collision sensor is refitted on the existing vehicle, the vehicle sensor can be flexibly arranged according to actual conditions, and when the vehicle type is newly developed, the position for installing the vehicle sensor can be reserved in advance in design.
As shown in fig. 1, the first permanent magnet 1 and the second permanent magnet 2 are both in a flat plate shape and fixed on the top of the front anti-collision beam 4, and the plate surfaces of the different-name magnetic poles are parallel and opposite to each other to form a magnetic field for placing the conductor bars 3. For convenience of arrangement, the plate surfaces of the first permanent magnet 1 and the second permanent magnet 2 may be made vertical to the vehicle body. The conductor bars 3 are made of a conductive material, have a rod shape, and are arranged in the lateral direction of the vehicle body.
According to the arrangement structure, the conductor bar 3 is positioned in a uniform magnetic field which is approximately vertical to the magnetic induction line, the bar body is also vertical to the magnetic induction line, and when the bar body moves relatively, E=BLV is based on the principle of dynamic electromotive force, wherein B is magnetic induction intensity, L is effective cutting length, V is the speed of the conductor bar relative to the magnetic field, larger dynamic electromotive force is generated, and the monitoring of subsequent signals is facilitated. In addition, the front anti-collision beam 4 and the front bumper skin 5 mainly bear the front collision impact of the vehicle, so that the deformation of the front bumper skin 5 is mainly along the longitudinal direction of the vehicle, the conductor bars 3 are transversely arranged, the whole bar body is more and basically the whole bar body is of an effective cutting length, and the using materials and occupied space of the conductor bars 3 are saved. The first permanent magnet 1 and the second permanent magnet 2 can be fixedly connected with the front anti-collision beam 4 by arranging a fixing bracket.
In order to further increase the generated dynamic electromotive force voltage signal, the width of the conductor bar 3 in the transverse direction of the vehicle body is equal to the width of the front bumper beam 4, the effective cutting length L is increased, and a larger dynamic electromotive force is generated.
As shown in fig. 2, a plurality of support rods 51 are arranged on the inner side wall of the front bumper skin 5 at intervals along the transverse direction of the vehicle body, one end of each support rod 51 is fixedly connected with the front bumper skin 5, and the other end of each support rod is fixedly connected with the conductor bar 3, so that a plurality of fixed connection points with the support rods 51 are formed on the conductor bar 3 at intervals along the transverse direction of the vehicle body.
Because the length of conductor bar 3 is longer, through a plurality of bracing pieces 51 with conductor bar 3 fixed stay in the magnetic field that forms between first permanent magnet 1 and second permanent magnet 2, support firmly, bracing piece 51 is along the horizontal interval arrangement of automobile body moreover, and the optional position deformation of front bumper skin 5 like this gives conductor bar 3 with more abundant transmission for the voltage signal that produces is more obvious, the monitoring of being convenient for. In addition, five fixed connection points with the support rod 51 may be formed on the conductor bar 3 at even intervals in the lateral direction of the vehicle body.
When the conductor bar 3 generates relative movement in the permanent magnetic field generated by the first permanent magnet 1 and the second permanent magnet 2 to cut the magnetic induction line during use, the conductor bar 3 generates dynamic electromotive force, namely voltage; when the automobile is in front or rear collision, the intensity signal of the collision is detected, and the signal is input into an airbag computer. The air bag computer judges whether to detonate the inflatable element to inflate the air bag according to the signals of the collision sensor, so that a buffer cushion is formed between a driver and a steering wheel and between a front seat passenger and an instrument board, and the injury caused by hard collision is avoided.
In addition, when the first member is a rear bumper beam and the second member is a rear bumper skin, the first permanent magnet 1, the second permanent magnet 2, and the conductor bar 3 are similar to the above-described structure and mounting structure.
Example 2
According to the collision response method based on the vehicle collision sensor, when the front bumper skin 5 deforms, the conductor bar 3 moves along with the deformation, so that the magnetic induction line is cut to generate voltage. The larger the deformation of the front bumper skin 5, the more the conductor bar 3 moves, the faster the deformation of the front bumper skin 5, the faster the conductor bar 3 moves, and the final reaction has two indexes on the voltage signal, namely the duration of the generated voltage and the maximum value of the generated voltage. Therefore, the following three cases are included in the process of generating the primary electromotive force in the conductor bar 3.
① When the electromotive force starts to be generated in the conductor bar 3, the vehicle is controlled to perform safety early warning, and a prompt is sent to a vehicle driver and the surrounding environment. When an electromotive force is generated initially, the collision is indicated to be happened, and though the collision is in low-level danger, safety early warning is required to be sent immediately, and prompt is given to a vehicle driver and the surrounding environment in time.
The safety early warning modes include a mode of controlling and opening double flashing of the vehicle, controlling and sounding a whistle of the vehicle, controlling and sounding an alarm by controlling and controlling the central control of the vehicle, and the like.
② When the 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 pretension the seat belt.
When the generated kinetic electromotive force reaches a set value and the duration reaches a set value, the collision is indicated to be carried out to a certain extent, the safety belt pre-tightening is continued on the basis of the safety pre-warning, and the possible collision is prepared to be dealt with for protecting passengers. The set voltage value and the set time value are obtained and given by calibrating a vehicle collision sensor more specifically.
③ When the electromotive force generated in the conductor bar 3 reaches an over-set voltage value and the duration reaches an over-set time value, the vehicle is controlled to activate the airbag at the set position.
When the generated dynamic electromotive force reaches a set value and the duration reaches a set value, the dynamic electromotive force reaches a set voltage value, the duration is not smaller than the set time value, the duration reaches the set time value, the dynamic electromotive force reaches the set voltage value at a certain moment in the duration, the fact that the collision strength is detected to be large is indicated to be in high danger, and corresponding air bags are ejected to protect passengers on the basis of safety early warning and safety belt pre-tightening.
For example, the first permanent magnet 1 and the second permanent magnet 2 are fixed on the front bumper beam 4, the conductor bar 3 is fixed on the front bumper skin 5, and the corresponding collision is a frontal collision, so that the triggered airbags mainly relate to airbag systems in front of the vehicle, and the airbags rapidly inflate and pop up to protect the head and upper body of the driver and the passenger, such as the driver and the passenger airbags, knee airbags, and the like, when the vehicle is in a frontal collision.
In addition, after the end of the set time of the primary electromotive force generated in the conductor bar 3, the vehicle is controlled to close the safety precaution. The method is executed each time when the electromotive force is generated in the conductor bar 3, namely, the method is executed in a plurality of times, when the electromotive force generated in the time is finished, the vehicle response is required to be restored after a set time, such as 1min, and the restoration safety early warning is mainly needed, because the early warning is finished at the moment, and the continuous operation is not needed.
Example 3
The collision response method based on the vehicle collision sensor comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for monitoring the voltage of a conductor bar 3, the control unit is used for acquiring the situation of generating dynamic electromotive force in the conductor bar 3 according to the monitoring result of the acquisition unit, and controlling a vehicle to perform safety early warning when the dynamic electromotive force starts to be generated in the conductor bar 3 and give a warning to a vehicle driver and the surrounding environment in the process of generating the dynamic electromotive force once in the conductor bar 3, controlling the vehicle to perform belt pretension when the dynamic electromotive force generated in the conductor bar 3 reaches a set voltage value or the duration reaches a set time value, and controlling the vehicle to activate an airbag of a set position when the dynamic electromotive force generated in the conductor bar 3 reaches the set voltage value and the duration reaches the set time value.
The acquisition unit may monitor the voltage across the conductor bar 3 by means of a wire connection. The control unit performs the corresponding actions in the following three cases, respectively, in the process of generating primary electromotive force in the conductor bar 3.
① When the electromotive force starts to be generated in the conductor bar 3, the vehicle is controlled to perform safety early warning, and a prompt is sent to a vehicle driver and the surrounding environment. When an electromotive force is generated initially, the collision is indicated to be happened, and though the collision is in low-level danger, safety early warning is required to be sent immediately, and prompt is given to a vehicle driver and the surrounding environment in time.
The safety early warning modes include a mode of controlling and opening double flashing of the vehicle, controlling and sounding a whistle of the vehicle, controlling and sounding an alarm by controlling and controlling the central control of the vehicle, and the like.
② When the 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 pretension the seat belt.
When the generated kinetic electromotive force reaches a set value and the duration reaches a set value, the collision is indicated to be carried out to a certain extent, the safety belt pre-tightening is continued on the basis of the safety pre-warning, and the possible collision is prepared to be dealt with for protecting passengers. The set voltage value and the set time value are obtained and given by calibrating a vehicle collision sensor more specifically.
③ When the electromotive force generated in the conductor bar 3 reaches an over-set voltage value and the duration reaches an over-set time value, the vehicle is controlled to activate the airbag at the set position.
When the generated dynamic electromotive force reaches a set value and the duration reaches a set value, the dynamic electromotive force reaches a set voltage value, the duration is not smaller than the set time value, the duration reaches the set time value, the dynamic electromotive force reaches the set voltage value at a certain moment in the duration, the collision strength is high, the safety warning is carried out, and the corresponding air bag is ejected on the basis of pre-tightening of a safety belt to protect passengers.
For example, the first permanent magnet 1 and the second permanent magnet 2 are fixed on the front bumper beam 4, the conductor bar 3 is fixed on the front bumper skin 5, and the corresponding collision is a frontal collision, so that the triggered airbags mainly relate to airbag systems in front of the vehicle, and the airbags rapidly inflate and pop up to protect the head and upper body of the driver and the passenger, such as the driver and the passenger airbags, knee airbags, and the like, when the vehicle is in a frontal collision.
In addition, after the end of the set time of the primary electromotive force generated in the conductor bar 3, the vehicle is controlled to close the safety precaution. The method is executed each time when the electromotive force is generated in the conductor bar 3, namely, the method is executed in a plurality of times, when the electromotive force generated in the time is finished, the vehicle response is required to be restored after a set time, such as 1min, and the restoration safety early warning is mainly needed, because the early warning is finished at the moment, and the continuous operation is not needed.
When the conductor bar 3 generates relative movement in a permanent magnetic field generated by the first permanent magnet 1 and the second permanent magnet 2 and cuts a magnetic induction line during use, the acquisition unit monitors that an electromotive force is generated in the conductor bar 3, the control unit immediately controls the vehicle to perform safety precaution, reminds a vehicle driver and surrounding environment, such as opening double flashes and whistles, continuously monitors the generated electromotive force, immediately controls the vehicle to perform belt pretension when the electromotive force generated in the conductor bar 3 reaches a set voltage value or a set time duration, and controls the vehicle to activate an airbag of a set position when the electromotive force generated in the conductor bar 3 reaches the set voltage value and the time duration reaches the set time duration.
It should be finally understood that the foregoing embodiments are merely illustrative of the technical solutions of the present invention and not limiting the scope of protection thereof, and although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes, modifications or equivalents may be made to the specific embodiments of the invention, and these changes, modifications or equivalents are within the scope of protection of the claims appended hereto.
Claims (9)
1. The collision response method of the vehicle collision sensor is characterized by comprising 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 fixed on a first part on a vehicle body, the conductor bar (3) is fixed on a second part on the vehicle body, the conductor bar (3) is positioned in a magnetic field formed between the first permanent magnet (1) and the second permanent magnet (2), and when the vehicle collides, the relative positions of the first part and the second part are changed, an electromotive force can be generated in the conductor bar (3);
the process of generating primary electromotive force in the conductor bar (3) comprises the following steps:
When the conductor bar (3) starts to generate the electromotive force, controlling the vehicle to perform safety early warning, and sending a prompt to a vehicle driver and the surrounding environment;
when the electromotive force generated in the conductor bar (3) reaches a set voltage value or the duration reaches a set time value, controlling the vehicle to pretighten the safety belt;
when the electromotive force generated in the conductor bar (3) reaches an over-set voltage value and the duration reaches an over-set time value, controlling the vehicle to activate the airbag at the set position.
2. A collision response method of a vehicle collision sensor according to claim 1, in which the first component is a front impact beam (4) and the second component is a front bumper skin (5).
3. The collision response method of a vehicle collision sensor according to claim 2, characterized in that the first permanent magnet (1) and the second permanent magnet (2) are both flat plates and fixed on the top of the front collision avoidance beam (4), and the plates of the unknown magnetic poles are arranged in parallel and opposite to each other to form a magnetic field for placing the conductor bars (3).
4. A collision response method of a vehicle collision sensor according to claim 3, characterized in that the faces of the first permanent magnet (1) and the second permanent magnet (2) are vertical to the vehicle body.
5. A collision response method of a vehicle collision sensor according to claim 2, in which the conductor bars (3) are made of an electrically conductive material, are rod-shaped, and are arranged in the lateral direction of the vehicle body.
6. A collision response method of a vehicle collision sensor according to claim 5, in which the width of the conductor bar (3) in the transverse direction of the vehicle body is equal to the width of the front impact beam (4).
7. The collision response method of the vehicle collision sensor according to claim 5, wherein a plurality of support rods (51) are arranged on the inner side wall of the front bumper skin (5) at intervals along the transverse direction of the vehicle body, one end of each support rod (51) is fixedly connected with the front bumper skin (5), the other end of each support rod is fixedly connected with the conductor bar (3), and a plurality of fixed connection points with the conductor bar (3) are formed on the conductor bar (3) at intervals along the transverse direction of the vehicle body.
8. The method for responding to a collision of a vehicle collision sensor according to claim 1, further comprising controlling the vehicle to close a safety precaution after a set time is ended by generating a primary electromotive force in the conductor bar (3).
9. The collision response system of the vehicle collision sensor is characterized by comprising 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 fixed on a first part on a vehicle body, the conductor bar (3) is fixed on a second part on the vehicle body, the conductor bar (3) is positioned in a magnetic field formed between the first permanent magnet (1) and the second permanent magnet (2), and when the vehicle collides, the relative positions of the first part and the second part are changed, an electromotive force can be generated in the conductor bar (3);
the response system comprises:
The acquisition unit is used for monitoring the voltage of the conductor bar (3);
the control unit is used for acquiring the situation of generating the dynamic electromotive force in the conductor bar (3) according to the monitoring result of the acquisition unit, and generating the primary dynamic electromotive force in the conductor bar (3):
When the conductor bar (3) starts to generate the electromotive force, controlling the vehicle to perform safety early warning, and sending a prompt to a vehicle driver and the surrounding environment;
when the electromotive force generated in the conductor bar (3) reaches a set voltage value or the duration reaches a set time value, controlling the vehicle to pretighten the safety belt;
when the electromotive force generated in the conductor bar (3) reaches an over-set voltage value and the duration reaches an over-set time value, controlling the vehicle to activate the airbag at the set position.
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| CN202411349418.3A CN119142283B (en) | 2024-09-26 | 2024-09-26 | Vehicle collision sensor, collision response method and system |
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| CN119142283A CN119142283A (en) | 2024-12-17 |
| CN119142283B true CN119142283B (en) | 2025-09-19 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4300653A1 (en) * | 1992-01-24 | 1993-07-29 | Volkswagen Ag | Collision sensor for triggering vehicle occupant safety device - contains vehicle wall inductive buckling sensor, without direct or indirect time measurement |
| CN1852815A (en) * | 2003-09-19 | 2006-10-25 | 汽车系统实验室公司 | Magnetic crash sensor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3945459A (en) * | 1972-07-26 | 1976-03-23 | Nippon Soken, Inc. | Collision sensing system for vehicles |
| US5608270A (en) * | 1990-11-19 | 1997-03-04 | Meister; Jack B. | Vehicle safety restraint system with linear output impact sensor |
| JP4568344B2 (en) * | 2008-04-04 | 2010-10-27 | 株式会社デンソー | Vehicle side collision detection device and vehicle occupant protection system including the same |
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2024
- 2024-09-26 CN CN202411349418.3A patent/CN119142283B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4300653A1 (en) * | 1992-01-24 | 1993-07-29 | Volkswagen Ag | Collision sensor for triggering vehicle occupant safety device - contains vehicle wall inductive buckling sensor, without direct or indirect time measurement |
| CN1852815A (en) * | 2003-09-19 | 2006-10-25 | 汽车系统实验室公司 | Magnetic crash sensor |
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| CN119142283A (en) | 2024-12-17 |
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