Vehicle collision safety protection system and method, electronic equipment and storage medium

Abstract

The invention relates to a vehicle collision safety protection system and method, electronic equipment and a storage medium, and the system comprises deformation sensors which are arranged at all positions of a vehicle, and each deformation sensor outputs a deformation signal according to the deformation at the corresponding position of the vehicle, the resistance value change of the deformation sensor is in direct proportion to the deformation degree of the vehicle, and the deformation signal is determined according to the resistance value; and the control unit is connected with the deformation sensor and is used for processing the deformation signal output by the deformation sensor so as to extract deformation characteristic parameters and carrying out safety protection control on the vehicle according to the deformation characteristic parameters. The method is high in collision detection precision, can reduce misjudgment, is applied to a safety protection system, and improves the performance of the safety protection system.

Description

Technical Field

[0001] The present invention relates to the field of vehicle safety technology, and in particular to a vehicle collision safety protection system, method, electronic equipment and storage medium. Background Art

[0002] With the popularization of automobiles and the increase in traffic volume, the risk of automobile collisions has also increased. Therefore, the requirements for automobile safety protection are becoming higher and higher, such as passenger safety protection, pedestrian safety protection, and power battery safety protection.

[0003] At present, most vehicles are equipped with safety protection systems, which detect collision signals and then provide safety protection for the vehicle based on the collision signals. The accuracy of the vehicle collision signal determines the safety performance of the vehicle collision safety system. In related technologies, collision safety detection mainly uses acceleration sensors, or piezoelectric sensors are attached to the inner surface of the bumper to detect collision signals. However, this type of sensor is prone to misjudgment and has low detection accuracy, resulting in poor collision safety protection effects. Summary of the invention

[0004] One of the purposes of the present invention is to provide a vehicle collision safety protection system to solve the problem that the collision sensor in the prior art is prone to misjudgment, has low detection accuracy, and leads to poor collision safety protection effect; the second purpose is to provide a vehicle collision safety protection method; the third purpose is to provide an electronic device.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A vehicle collision safety protection system, comprising:

[0007] A deformation sensor is arranged at each position of the vehicle, each of the deformation sensors outputs a deformation signal according to the deformation at the corresponding position of the vehicle, the change of the resistance value of the deformation sensor is proportional to the deformation degree of the vehicle, and the deformation signal is determined by the resistance value;

[0008] A control unit is connected to the deformation sensor and is used to process the deformation signal output by the deformation sensor to extract deformation characteristic parameters, and to control the safety protection of the vehicle according to the deformation characteristic parameters.

[0009] According to the above technical means, since the detection principle of the deformation sensor is to deform according to the deformation at the corresponding position of the vehicle, the change in the resistance value of the deformation sensor is proportional to the degree of deformation of the vehicle, and the deformation model can be detected more accurately and quickly. In addition, the above deformation sensor can output a deformation signal in real time, and the control unit can extract the deformation characteristic parameters based on the deformation signal, and then accurately judge the vehicle collision situation, so as to facilitate the vehicle to carry out safety protection control in a timely and accurate manner and improve the vehicle safety protection performance.

[0010] Furthermore, the deformation sensor includes a deformation body, which is pasted at various positions of the vehicle; the deformation body includes a conductive layer, an upper base layer, a lower base layer and an adhesive layer, the conductive layer is located between the upper base layer and the lower base layer, and the adhesive layer is arranged on the upper base layer or the lower base layer, and is located on the side opposite to the conductive layer.

[0011] According to the above technical means, the size of the deformation sensor can be set according to demand and according to the setting position, thereby increasing the detection range and improving the detection progress.

[0012] Furthermore, the conductive layer is made of polymer conductive material.

[0013] According to the above technical means, the polymer conductive material is used as the main part of the deformation body that changes the resistance value, which has high sensitivity and can accurately reflect the change of the resistance value.

[0014] Further, the control unit includes a processor, which outputs the deformation signal as a first deformation feature, performs derivative processing on the first deformation feature, and outputs it as a second deformation feature, and performs integration processing on the first deformation feature, and outputs it as a third deformation feature, wherein the first deformation feature characterizes the deformation amplitude, the second deformation feature characterizes the deformation rate, and the third deformation feature characterizes the deformation energy, and the first deformation feature, the second deformation feature and the third deformation feature constitute the deformation feature parameters.

[0015] According to the above technical means, since the change in the resistance value of the deformation processor is caused by deformation, and as the vehicle deforms, the deformation signal output by the deformation processor is a signal wave, integration and differentiation processing can be performed based on these deformation signals, and then parameters representing different dimensions can be obtained to represent the deformation amplitude, deformation rate and deformation energy. By analyzing the collision type through parameters of different dimensions, the accuracy of detection can be further improved, which can reduce the occurrence of misjudgment.

[0016] Furthermore, the control unit also includes an A / D conversion module and a DSP unit, the deformation sensor is connected to the A / D conversion module, the A / D conversion module is connected to the DSP unit, and the DSP unit is connected to the processor.

[0017] Furthermore, the control unit also includes a plurality of ignition drive modules, and the plurality of ignition drive modules are connected to the output end of the processor, and the output end of the drive module is connected to the execution unit to drive the execution unit to perform safety protection operations on the vehicle.

[0018] According to the above technical means, automatic safety protection control of collision is achieved.

[0019] A vehicle collision safety protection method is applied to a vehicle collision safety protection system, the system comprising a deformation sensor and a control unit, the deformation sensor being arranged at various positions of the vehicle, the method comprising:

[0020] Acquire the deformation signal output by the deformation sensor, and process the deformation signal respectively to obtain the deformation characteristic parameter of each deformation sensor;

[0021] Determining a collision type of the vehicle according to the deformation characteristic parameter, the collision type comprising at least one of a frontal collision, a side collision, a rear collision, and a battery pack collision;

[0022] Corresponding safety protection control is performed based on the collision type.

[0023] According to the above technical means, since the deformation signal output by the deformation sensor is proportional to the deformation of the vehicle, the collision situation of the vehicle can be analyzed according to the deformation signal, not only the collision type can be obtained, but also the collision degree can be determined, and then the corresponding safety protection control can be performed based on the collision type and collision degree, thereby improving the accuracy of the safety protection control and enhancing the safety protection effect.

[0024] Further: the determining the collision type of the vehicle according to the deformation characteristic parameter comprises:

[0025] Determine a target deformation sensor whose value corresponding to the deformation characteristic parameter reaches a preset critical value;

[0026] The collision type of the vehicle is determined according to the location of at least one of the target deformation sensors.

[0027] According to the above technical means, by setting a preset critical value as a reference value, when the deformation characteristic parameter value corresponding to the output deformation signal reaches the preset critical value, it is determined that the degree of collision is large, and safety protection control is required for this collision type to protect the safety of the occupants.

[0028] Further: the determining the collision type of the vehicle according to the deformation characteristic parameter further includes:

[0029] When determining that the deformation sensor whose deformation signal changes is in different directions, obtaining a first critical value as the preset critical value;

[0030] When it is determined that the deformation sensors whose deformation signals change are in the same direction, a second critical value is obtained as the preset critical value, wherein the first critical value is smaller than the second critical value.

[0031] According to the above technical means, different preset critical values ​​are used as reference values ​​in different collision scenarios to adapt to the safety protection needs in different scenarios and improve the safety protection effect.

[0032] Further: the acquiring of the deformation signal output by the deformation sensor and processing the deformation signal respectively to obtain the deformation characteristic parameter of each deformation sensor includes:

[0033] Acquire the deformation signal output by the deformation sensor, and perform numerical conversion and filtering on the deformation signal of each deformation sensor;

[0034] The deformation feature after numerical conversion and filtering is saved as a first deformation feature, where the first deformation feature represents the deformation amplitude;

[0035] performing a derivative process on the first deformation feature and saving the result as a second deformation feature, wherein the second deformation feature represents the deformation rate;

[0036] performing integration processing on the first deformation feature and saving the result as a third deformation feature, wherein the third deformation feature represents the deformation energy;

[0037] The first deformation feature, the second deformation feature and the third deformation feature constitute the deformation feature parameters.

[0038] According to the above technical means, the collision type and degree are analyzed from the deformation characteristics of at least three dimensions to reduce misjudgment.

[0039] Further: the determining the collision type of the vehicle according to the deformation characteristic parameter comprises:

[0040] Respectively obtaining comparison results of the first deformation feature, the second deformation feature and the third deformation feature of the deformation sensor and the first threshold value corresponding thereto, and respectively obtaining the first deformation feature, the second deformation feature and the third deformation feature of the deformation sensor and the second threshold value corresponding thereto for comparison;

[0041] If the comparison result is that any one of the first deformation feature, the second deformation feature and the third deformation feature of the deformation sensor reaches a first threshold value corresponding thereto, then the deformation sensor is determined as a target deformation sensor;

[0042] If the comparison result is that at least two of the first deformation feature, the second deformation feature and the third deformation feature of the deformation sensor reach the second threshold value corresponding thereto, the deformation sensor is determined to be the target deformation sensor; wherein the first threshold value is greater than the second threshold value;

[0043] The collision type of the vehicle is determined according to the location of at least one of the target deformation sensors.

[0044] According to the above technical means, the collision type and collision degree are analyzed from the deformation characteristics of at least three dimensions. When the deformation characteristic values ​​of multiple dimensions are large, the preset critical value is reduced to trigger the safety protection control, thereby increasing the flexibility of the safety protection control and adapting to the safety protection requirements in different scenarios.

[0045] Further, the performing corresponding safety protection control based on the collision type includes:

[0046] The collision type is a frontal collision, the front airbag is controlled to be deployed, and the seat belt is controlled to be pre-tightened;

[0047] If the collision type is a side collision, the side air curtain is controlled to be opened and the seat belt is controlled to be pre-tensioned;

[0048] The collision type is a rear collision, and the seat belt pre-tensioning is controlled;

[0049] The collision type is a battery pack collision, the duration is recorded, and when the duration reaches a preset duration, a safety warning message is output.

[0050] According to the above technical means, different safety protection methods are adopted based on different collision types to improve the protection effect. For battery pack collision, the deformation sensor can record the duration of deformation, and then provide safety warnings based on the deformation situation, thereby improving the safety of vehicle use.

[0051] An electronic device includes a vehicle collision safety protection system, the safety protection system includes a deformation sensor and a control unit, and the control unit includes a processor;

[0052] The processor executes the computer-executable instructions stored in the memory to implement the method described above.

[0053] Furthermore, the electronic device may be a car, or an electronic component on a car.

[0054] A computer-readable storage medium / computer program product, wherein the computer-readable storage medium stores computer-executable instructions / the computer program product includes computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the method described above.

[0055] Beneficial effects of the present invention:

[0056] (1) The deformation sensor of the present invention changes its resistance value due to deformation, and then changes its output deformation signal. When the deformation sensor continues to deform, it continues to output the waveform of the deformation signal. Based on the waveform of the deformation signal, accurate judgment of vehicle deformation (collision) can be achieved, which can reduce misjudgment.

[0057] (2) The present invention can obtain the collision type and collision degree of the vehicle based on the deformation signal output by the deformation sensor, and can further perform safety protection control based on the collision type and collision degree, thereby improving the safety of vehicle use.

[0058] (3) Based on the deformation signal output by the deformation sensor, the present invention can obtain deformation characteristics of different dimensions, such as deformation amplitude, deformation rate and deformation energy. More collision scenarios can be determined based on the deformation characteristics of different dimensions, and then different preset critical values ​​are used to judge the collision degree for different collision scenarios, thereby increasing the flexibility of safety protection control and improving the safety protection effect of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 A schematic diagram of the deformation body structure of the deformation sensor provided by the present invention;

[0060] Figure 2 For the present invention Figure 1 Schematic diagram of the cross section of AA;

[0061] Figure 3 A circuit diagram of the deformation sensor provided by the present invention;

[0062] Figure 4 A schematic diagram of a control unit provided by the present invention;

[0063] Figure 5 A schematic diagram of the arrangement of the deformation sensor provided by the present invention on a vehicle body;

[0064] Figure 6 A topological schematic diagram of the installation position and collision type of the deformation sensor provided by the present invention;

[0065] Figure 7 A schematic diagram of a process flow of a vehicle collision safety protection method provided by an embodiment of the present invention;

[0066] Figure 8 for Figure 7 A detailed flow chart of an embodiment of S701;

[0067] Fig. 9 for Figure 7 A detailed flow chart of an embodiment of S702 is shown in FIG.

[0068] Among them, 1- deformation sensor; 11- deformation body; 111- conductive layer; 112- upper base layer; 113- lower base layer; 114- coating layer; 115- adhesive layer; 2- body; 21- front anti-collision beam; 22- front longitudinal beam; 23- shotgun; 24- A pillar; 25- upper section of A pillar; 26- threshold beam; 27- B pillar; 28- C pillar; 29- rear longitudinal beam; 210- rear anti-collision beam; 3- control unit; 31- A / D conversion module; 32- DSP unit; 33- battery management unit; 34- processor MCU; 35- ignition drive module; 36- LIN transceiver; 37- CAN transceiver; 38- ignition channel. DETAILED DESCRIPTION

[0069] The following will describe the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0070] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0071] This embodiment provides a vehicle collision safety protection system, which is used to protect the safety of people inside the vehicle and the vehicle when the vehicle collides. Figure 1 and Figure 4 The vehicle collision safety protection system includes a deformation sensor 1 and a control unit 3. The deformation sensor 1 is connected to the control unit 3. The deformation sensor 1 is pasted on various positions of the vehicle body 2 to detect the deformation signal of the vehicle body 2 after the collision. The control unit 3 receives the deformation signal and then performs deformation analysis on the vehicle deformation according to the deformation signal, and then controls the vehicle to respond to safety protection.

[0072] As an example, see Figure 1 and Figure 2 The deformation sensor 1 includes a deformation body 11, which includes a conductive layer 111, an upper base layer 112, a lower base layer 113, a coating layer 114 and an adhesive layer 115. The conductive layer 111 is located between the upper base layer 112 and the lower base layer 113; the coating layer 114 covers the upper base layer 112, the conductive layer 111 and the lower base layer 113, and the coating layer 114 and the lower base layer 113 cover and insulate the other parts of the deformation body 11 and isolate them from the air, which can effectively prevent the conductive layer 111111 from changing the material properties due to oxidation; the adhesive layer 115 is arranged at the bottom of the lower base layer 113 (the side away from the conductive layer 111), and can also be arranged at the bottom of the upper base (the side away from the conductive layer 111).

[0073] Optionally, the conductive layer 111 is made of a polymer conductive material, which has a high sensitivity to resistance change when deformed, and can improve the accuracy of deformation detection. The deformable body 11 is a flexible part, which is convenient for bonding and fixing with the surface of the vehicle structure or other parts through the adhesive layer 115, and can increase the bonding area, thereby increasing the detection area. As for the flexible deformable body 11, when the vehicle structure or other parts are deformed, the deformable body 1111 is deformed accordingly, and its deformation degree is the same as that of the vehicle structure or other parts. Compared with the sensor that is deformed by force (the sensing signal disappears after the force disappears), the deformation sensor 1 in this embodiment deforms with the deformation of the vehicle structure or other parts, and can continuously output a deformation signal, which can characterize the degree of deformation of the vehicle and the duration of the deformation.

[0074] Optionally, the higher the hardness of the upper substrate layer 112 and the lower substrate layer 113, the higher the resistance change response speed of the conductive layer 111, and vice versa. Therefore, in this example, the hardness of the upper substrate layer 112 and the lower substrate layer 113 is much higher than that of the conductive layer 111.

[0075] The deformable body 11 is fixed to the vehicle structural parts, thin-walled parts, vehicle body and other vehicle parts by pasting. When the vehicle structural parts, thin-walled parts, vehicle body and other vehicle parts are deformed, the deformable body 11 is deformed, and the conductive layer 111 is deformed, causing its internal resistance value to change in real time. This embodiment can detect vehicle deformation through the change of resistance value.

[0076] It should be noted that the voltage change amplitude output by the deformation sensor 1 is proportional to the deformation amplitude of the vehicle structure, thin-walled surface, body surface and other vehicle parts, and is related to the total energy causing the deformation. The voltage change rate is proportional to the deformation speed of the vehicle structure, thin-walled surface, body surface and other vehicle parts.

[0077] In the present application, please refer to Figure 3 The deformation sensor 1 also includes three resistors R, and the three resistors R and the deformation body 11 are connected in sequence to form a loop to form a bridge circuit. The bridge circuit includes an output terminal Ui and an input terminal Uo, wherein the output terminal Uo is connected to the control unit 3, and the control unit 3 obtains a deformation signal through the output terminal Uo of the deformation sensor 1. In this example, the deformation signal output by the output terminal Uo is a voltage signal.

[0078] The deformable body 11 pasted on the surface of the vehicle structure or other parts is connected to the circuit through a wire, and forms a full-bridge measurement circuit with other three resistors R (optionally, the resistance value of the resistor is fixed). Among them, a constant voltage Ui is input at the input end. When the deformable body 1111 does not deform, the output voltage Uo is a constant value; when the deformable body 11 deforms along with the surface of the vehicle structure or other parts, the resistance value of its internal conductive layer 111 changes, which causes the output voltage Uo at the output end to change (that is, the deformation signal). The amplitude of the change in the voltage Uo at the output end is positively correlated with the degree of deformation of the vehicle structure or other parts. The output voltage Uo change curve can be recorded in real time, and then by analyzing the change curve of the bridge output voltage Uo, the deformation characteristic parameters of the vehicle are obtained, and then the safety protection of the vehicle is controlled by the deformation characteristic parameters.

[0079] As an example, see Figure 4 The control unit 3 includes an A / D conversion module 31, a DSP unit 32 and a processor 34. The input end of the A / D conversion module 31 is connected to the deformation sensor 1, the output end of the A / D conversion module 31 is connected to the input end of the DSP unit 32, and the input end of the DSP unit 32 is connected to the processor 34.

[0080] Optionally, the control unit 3 includes a plurality of A / D conversion modules 31, and the number of the A / D conversion modules 31 corresponds to the number of the deformation sensors 1. The output signal of each deformation sensor 1 is transmitted to the corresponding A / D conversion module 31, and the A / D conversion module 31 converts the output voltage signal Uo of the deformation sensor 1 from analog to digital. Through the conversion, the output voltage Uo signal is converted from an analog signal to a digital signal. Optionally, the conversion accuracy of the digital signal depends on the working bit number of the A / D conversion module 31, and the conversion speed depends on the working frequency of the conversion module.

[0081] The A / D conversion module 31 transmits the converted output voltage Uo to the DSP unit 32 , and the DSP unit 32 performs filtering on the A / D converted output voltage Uo to effectively eliminate the interference of clutter. After filtering the digital signal, the DSP unit 32 transmits it to the processor 34 .

[0082] The processor 34 reads and outputs the voltage Uo amplitude (deformation curve of the voltage Uo) in real time, which is stored as the first deformation feature K1. The first deformation feature K1 represents the deformation amplitude of the deformation sensor 1. The processor 34 also performs a derivative process on the first deformation feature, such as derivation dUo / dt to output a real-time derivative result, which is stored as the first deformation feature K2. Optionally, the second deformation feature K2 represents the deformation rate of the deformation sensor 1. The processor 34 also performs an integral process on the first deformation feature, such as integrating Uo ∫Uodt, outputting the integral result in real time, and storing it as the third deformation feature K3. Optionally, the third deformation feature K3 can represent the deformation energy of the deformation sensor 1. Through the processing of the deformation signal by the processor 34, deformation feature parameters of different dimensions are extracted, including the first deformation feature K1, the second deformation feature K2, and the third deformation feature K3.

[0083] Furthermore, by judging and analyzing at least one of the characteristic parameters K1, K2 and K3, the collision type of the vehicle can be obtained, and the collision type includes at least one of a frontal collision, a side collision, a rear collision and a battery pack collision.

[0084] Furthermore, the control unit 3 further includes a plurality of ignition drive modules 35, the input end of each ignition drive module 35 is connected to the processor 34, and the output end of the ignition drive module 35 is connected to the corresponding execution units. For example, the ignition drive module 35 includes but is not limited to the front airbag ignition drive module 35, the side air curtain ignition drive module 35, the seat belt pre-tensioning ignition drive module 35, etc. Correspondingly, the execution unit includes the front airbag, the side air curtain, the seat belt, etc., and the ignition drive module 35 is connected to the execution components such as the airbag, the side air curtain, the seat belt, etc. through the ignition channel 35.

[0085] Furthermore, the control unit 3 also includes a battery management unit 33, and the battery management unit 33 is used to manage the power of the battery pack.

[0086] Furthermore, the control unit 3 further includes a LIN transceiver 36 and a CAN transceiver 37. The LIN transceiver 36 is used to connect to the occupant detector to receive information detected by the occupant detector, or to send a trigger signal to the occupant detector to trigger the occupant detector to detect the occupant. The CAN transceiver 37 is used to connect to the vehicle CAN bus to communicate or transmit data with the CAN bus.

[0087] Furthermore, the above vehicle collision safety protection system is described in conjunction with a specific example. The deformation sensor 1 is arranged at different positions of the vehicle body 2, and can be arranged on the surface of the structural member of the vehicle body 2, or on the inner side of the structural adhesive of the vehicle body 2. As an example, Figure 5As shown, the pasting positions of the deformation sensor 1 on the vehicle body 2 include but are not limited to the following positions: front anti-collision beam 21 (the black long strip at this position in the figure indicates the deformation sensor 1), front longitudinal beam 22 (the black long strip at this position in the figure indicates the deformation sensor 1), shotgun 23 (the black long strip at this position in the figure indicates the deformation sensor 1), A-pillar (the black long strip at this position in the figure indicates the deformation sensor 1), upper section of A-pillar 25 (the black long strip at this position in the figure indicates the deformation sensor 1), door sill beam 26 (the black long strip at this position in the figure indicates the deformation sensor 1), B-pillar 27 (the black long strip at this position in the figure indicates the deformation sensor 1), C-pillar 28 (the black long strip at this position in the figure indicates the deformation sensor 1), rear longitudinal beam 29 (the black long strip at this position in the figure indicates the deformation sensor 1), rear anti-collision beam 210 (the black long strip at this position in the figure indicates the deformation sensor 1) and battery pack shell, etc. When the vehicle is deformed by a collision, the deformation signal output by the deformation sensor 1 at the deformation position changes. The control unit 3 analyzes the change in the deformation signal to determine whether the collision at that position requires safety protection control. If safety protection control is required, the collision type is further determined, and then the safety protection control corresponding to the collision type is executed.

[0088] As an example, according to the position where the collision may occur during the driving of the vehicle and the setting position of the deformation sensor 1, the collision types are defined to include frontal collision, side collision, rear collision and battery pack collision, or the collision types also include frontal angle collision and rear angle collision. The frontal angle collision is a collision with force between the front and the side, and the rear angle collision is a collision with force between the rear and the side.

[0089] The following is a deformation sensor 1 set in Figure 5 Taking the various positions shown as examples, the relationship between the collision type and the position of the deformation sensor 1 is explained:

[0090] Please refer to Figure 6 As shown, if the deformation signal output by the deformation sensor 1 of at least one of the current anti-collision beam 21, the front longitudinal beam 22, the shotgun 23, the A-pillar, and the upper section of the A-pillar 25 changes, it is determined that a frontal collision occurs on the vehicle, and this collision type is a frontal collision.

[0091] When the deformation signals output by the deformation sensors 1 at least two of the longitudinal beam 22, shotgun 23, A-pillar, A-pillar upper section 25, and door sill beam 26 change, it is determined that the front angle of the vehicle has collided, and this collision type is a front angle collision.

[0092] When the deformation signal output by the deformation sensor 1 of at least one of the A-pillar, the A-pillar upper section 25, the sill beam 26, the B-pillar 27, and the C-pillar 28 changes, it is determined that a side collision of the vehicle occurs, and this collision type is a side collision.

[0093] When the deformation signal output by the deformation sensor 1 of at least one of the rear longitudinal beam 29 and the rear anti-collision beam 210 changes, it is determined that a collision occurs at the rear of the vehicle, and this collision type is a rear collision.

[0094] When the deformation signals output by the deformation sensors 1 at least two of the B-pillar 27 , the C-pillar 28 , the rear longitudinal beam 29 and the rear anti-collision beam 210 change, it is determined that a rear angle collision has occurred in the vehicle, and this collision type is a rear angle collision.

[0095] When a deformation signal output by at least one deformation sensor 1 on the battery pack housing changes, it is determined that a battery pack of the vehicle has collided, and this collision type is a battery pack collision.

[0096] It should be noted that the deformation sensor 1 may also be set at other positions. The above-mentioned arrangement is only one of the arrangements and is not limited to this arrangement. The collision type is determined based on the position of the deformation sensor 1 and is not limited to the above-mentioned arrangement.

[0097] In the embodiment of the present application, the deformation sensor causes a change in resistance value due to deformation, and then the output deformation signal changes. When the deformation sensor continues to deform, it continues to output the waveform of the deformation signal. Based on the waveform of the deformation signal, accurate judgment of vehicle deformation (collision) can be achieved, which can reduce misjudgment. The change in resistance value of the deformation sensor is proportional to the degree of deformation of the vehicle, and the deformation model can be detected more accurately and quickly. The control unit can extract deformation characteristic parameters based on the deformation signal, and then accurately judge the vehicle collision situation, so as to facilitate timely and accurate safety protection control of the vehicle and improve the safety protection performance of the vehicle.

[0098] Based on the above safety protection system, the embodiment of the present application further provides a vehicle collision safety protection method, based on which safety protection control is implemented.

[0099] Figure 7 For a flow chart of a vehicle collision safety protection method provided in an embodiment of the present application, please refer to Figure 7 This embodiment is applied to the vehicle collision safety protection system provided above, and the method includes:

[0100] S701, acquiring deformation signals output by deformation sensors, and processing the deformation signals respectively to obtain deformation characteristic parameters of each deformation sensor;

[0101] In this embodiment, the implementation method and principle of the deformation sensor detecting the deformation signal are the same as those of the deformation sensor in the above-mentioned vehicle collision safety protection system. For details, please refer to the above-mentioned embodiment and will not be repeated here.

[0102] In this embodiment, the processor processes the deformation signal in a manner including but not limited to signal conversion and noise reduction.

[0103] S702, determining the collision type of the vehicle according to the deformation characteristic parameters;

[0104] In this embodiment, the collision type includes at least one of a frontal collision, a side collision, a rear collision and a battery pack collision, wherein the front, side and rear are relative to the car, and the front, side and rear are respectively relative to the front, side and rear of the car.

[0105] Generally, when the degree of vehicle collision reaches the safety protection level, the vehicle safety protection control needs to be activated. This embodiment is based on the consideration of the safety protection of the occupants when a collision occurs. According to the safety protection level standard, the critical value of the value corresponding to the deformation characteristic parameter is preset, which is defined as the preset critical value. When the value corresponding to the deformation characteristic parameter reaches the preset critical value, it is determined that the collision reaches the safety protection level and the safety protection control needs to be activated.

[0106] Optionally, there are multiple types of vehicle safety protection controls, which are mainly set for different collision types. Based on this, after determining that the vehicle safety protection control needs to be activated according to the deformation characteristic parameters, the collision type is further determined, so as to facilitate the safety protection control for the collision type. The collision type is determined as shown in the following example.

[0107] As an example, S701 may specifically be:

[0108] Determine a target deformation sensor whose value corresponding to the deformation characteristic parameter reaches a preset critical value; and determine the collision type of the vehicle according to the location of at least one target deformation sensor.

[0109] The degree of vehicle collision is determined based on the deformation signal of the deformation sensor, and the degree of vehicle collision (vehicle deformation degree) is proportional to the deformation signal. If the value corresponding to the deformation characteristic parameter reaches the preset critical value, it is determined that the deformation degree of the deformation sensor represents that the degree of vehicle collision reaches the safety protection level, and the deformation sensor is determined to be the target deformation sensor, and then the collision type of the vehicle is determined based on the location of the target deformation sensor.

[0110] For example, if the target deformation sensor whose value corresponding to the deformation characteristic parameter reaches the preset critical value is located at least one of the front bumper beam, shotgun, front longitudinal beam, A-pillar or upper section of the A-pillar, the collision type of the vehicle is determined to be a frontal collision.

[0111] If the target deformation sensor whose value corresponding to the deformation characteristic parameter reaches a preset critical value is located on the battery pack housing, it is determined that the collision type of the vehicle is a battery pack collision.

[0112] The specific method of determining the collision type can be found in Figure 6 As well as the above Figure 6 The examples listed are not described again here.

[0113] It should be noted that, in this embodiment, the method of determining the target deformation sensor whose value corresponding to the deformation characteristic parameter reaches the preset critical value includes: sequentially obtaining the deformation characteristic parameter of each deformation sensor and the preset critical value comparison result, if the comparison result is that the value of a deformation characteristic parameter reaches the preset critical value, then determining the deformation sensor corresponding to the deformation characteristic parameter as the target deformation sensor. Sequentially compare each deformation sensor to determine all target deformation sensors. Based on this, the target deformation sensor may be one or more.

[0114] If there is one target deformation sensor, the collision type is determined according to the target deformation sensor. If there are multiple target deformation sensors, the collision type is determined according to all deformation sensors. In this scenario, the collision type may be one or multiple.

[0115] Furthermore, in some examples, the value of the preset critical value varies according to the location of the deformation sensor where the deformation signal changes, thereby improving the accuracy of safety protection judgment and enhancing the safety of vehicle use.

[0116] For example, the method also includes: when it is determined that the position of the deformation sensor where the deformation signal changes is in different directions, obtaining a first critical value as a preset critical value; when it is determined that the position of the deformation sensor where the deformation signal changes is in the same direction, obtaining a second critical value as a preset critical value, wherein the first critical value is less than the second critical value.

[0117] The change of the deformation signal is caused by the deformation of the deformation sensor as the vehicle deforms. The processor receives the deformation signal output by the deformation sensor. If the deformation signal changes, it is determined that a collision occurs at the location of the deformation processor. If the collision occurs in different directions, it means that the vehicles collide in different directions. At this time, the first critical value is selected as the preset critical value. If the collision occurs in the same direction, it means that the vehicles collide in one direction. At this time, the second critical value is selected as the preset critical value. The first critical value is smaller than the second critical value, that is, when the vehicles collide in different directions, a smaller critical value is selected as the preset critical value and compared with the value of the deformation characteristic parameter. When the vehicles collide in the same direction, a larger critical value is selected as the preset critical value and compared with the value of the deformation characteristic parameter. It should be noted that since collisions in different directions are more likely to injure occupants, after adjusting the size of the preset critical value, the vehicle's safety protection control can be activated even if the collision degree of the vehicle is small. In addition, in collision scenarios at certain angles, the collision force will be decomposed into different directions, which will cause deformation of deformation sensors in different directions. However, since the force is decomposed into different directions, the deformation signals of deformation sensors in different directions are smaller than the deformation signals in a single direction. However, the collision force of the vehicle is the same. In this scenario, if the second critical value is used as the preset critical value, the values ​​of the deformation characteristic parameters output by the deformation sensors in both directions may not reach the preset critical value, resulting in the vehicle not starting the safety protection control and the safety of the occupants being threatened. Based on this embodiment, if the deformation sensors in different directions are all deformed, the smaller first critical value is used as the preset critical value. In this way, when the values ​​corresponding to the deformation characteristic parameters are compared with the preset critical value, it is easier to reach the preset critical value, thereby starting the safety protection control and ensuring the safety of the occupants.

[0118] In this example, the value of the preset critical value varies according to the location of the deformation sensor where the deformation signal changes. The value of the preset critical value is adaptively adjusted according to complex collision scenarios to increase the flexibility of vehicle safety protection control, improve the accuracy of safety protection judgment, and enhance vehicle safety.

[0119] S703: Execute corresponding safety protection control based on the collision type.

[0120] Different safety protection controls are set according to different collision types to achieve more effective and precise protection.

[0121] As an example, the types of collision include frontal collision, side collision and rear collision. For frontal collision, front airbags and seat belts are provided for safety protection; for side collision, side air curtains and seat belts are provided for safety protection; for rear collision, seat belts are provided for safety protection. It should be noted that the above-mentioned frontal airbags, side air curtains, seat belts, etc. are only some of the listed safety protection measures. In some automotive application scenarios, other safety protection measures may also be included.

[0122] The embodiment of the present application performs corresponding safety protection control based on the collision type in order to issue targeted safety protection control based on the collision type to better protect the safety of the occupants. Therefore, as long as the control is based on the collision type to perform effective safety protection for the collision type, it falls within the protection scope of the embodiment of the present application.

[0123] The following specifically describes the control of executing corresponding safety protection based on the collision type:

[0124] If the collision type is a frontal collision, the front airbag is controlled to open and the seat belt is controlled to be pre-tightened. In a frontal collision, the occupants are easily injured in the front, so the front airbag is controlled to open to protect the occupants' heads and chests, etc., and the seat belt is controlled to be pre-tightened to reduce the collision force and speed of the occupants and protect them.

[0125] It should be noted that, in the present embodiment, the processor sends an ignition signal to the ignition channel through the ignition drive module, and the ignition channel ignites the front restraint system actuator, including the front airbag and the seat belt.

[0126] If the collision type is a side collision, the side air curtains are controlled to open and the seat belts are controlled to be pre-tightened. In a side collision, the side of the occupants is easily injured, so the side air curtains are controlled to open and the seat belts are controlled to be pre-tightened to reduce the collision force and speed of the occupants and protect them.

[0127] It should be noted that, in the present embodiment, the processor sends an ignition signal to the ignition channel through the ignition drive module, and the ignition channel ignites the side restraint system actuators, including the side air curtains and seat belts.

[0128] If the collision type is a rear collision, the seat belt pretension is controlled. In a rear collision, the damage to the occupants is relatively weak. At this time, the seat belt pretension can be controlled to reduce the collision force and speed of the occupants.

[0129] It should be noted that, in this embodiment, the processor sends an ignition signal to the ignition channel through the ignition drive module, and the ignition channel ignites the seat belt.

[0130] If the collision type is a battery pack collision, the duration is recorded, and when the duration reaches the preset duration, a safety warning message is output. When a battery pack collides, the deformation degree of the battery needs to be deformed, and the deformation degree includes permanent deformation and safety deformation. If the deformation of the battery pack is permanent deformation, a safety warning message needs to be output to the user or the vehicle terminal to immediately inform the user of the battery pack deformation to ensure the user's safety in using the vehicle.

[0131] In this embodiment, whether the deformation is permanent is determined by recording the duration of the deformation of the battery pack. If the duration of the deformation reaches a preset duration, it is determined to be permanent deformation.

[0132] Different types of collisions require different safety protection controls to improve the accuracy of vehicle safety protection controls and thus improve vehicle safety.

[0133] In this embodiment, since the deformation signal output by the deformation sensor is proportional to the deformation of the vehicle, by analyzing the collision situation of the vehicle based on the deformation signal, not only the collision type can be obtained, but also the collision degree can be determined (determined by a preset critical value), and then responsive safety protection control can be performed based on the collision type and collision degree, thereby improving the accuracy of the safety protection control and enhancing the safety protection effect.

[0134] As an example, see Figure 8 Based on the above embodiment, the specific implementation of step S701 may be:

[0135] S801, acquiring deformation signals output by deformation sensors, and performing numerical conversion and filtering on the deformation signals of each deformation sensor.

[0136] In this embodiment, the deformation sensor is a sensor that deforms as the vehicle structural parts are deformed. Its deformation is proportional to the deformation of the vehicle structural parts. It can continuously output deformation signals. Based on this, the embodiment of the present application can generate a signal waveform based on the deformation signal continuously output by the deformation sensor, and then process the signal wave to obtain deformation characteristic parameters of different dimensions (shapes).

[0137] S802, saving the deformation feature after numerical conversion and filtering as a first deformation feature, where the first deformation feature represents the deformation amplitude;

[0138] In this step, the signal wave is numerically converted and filtered to obtain a first deformation feature (a signal output by the deformation sensor), the first deformation feature characterizing the deformation amplitude of the deformation sensor. The local deformation degree can be obtained through the deformation amplitude.

[0139] S803, performing a derivative process on the first deformation feature and saving the result as a second deformation feature, where the second deformation feature represents a deformation rate;

[0140] In this step, the first deformation feature (signal waveform) is derivatized, and the derivative result after derivation is saved as the second deformation feature, which represents the deformation rate of the deformation sensor. The deformation trend can be predicted by the deformation rate.

[0141] S804, performing integration processing on the first deformation feature and saving it as a third deformation feature, the third deformation feature represents deformation energy, and the first deformation feature, the second deformation feature and the third deformation feature constitute deformation feature parameters;

[0142] In this step, the first deformation feature (signal waveform) is integrated, and the integrated result is saved as the third deformation feature, which characterizes the deformation energy of the deformation sensor. That is, the deformation feature parameters include deformation amplitude, deformation rate and deformation energy. The overall deformation degree can be predicted by the deformation energy.

[0143] As an example, the processor can determine the collision type of the vehicle by any one of the first deformation feature, the second deformation feature, and the third deformation feature. For example, if the value of any deformation signal of the first deformation feature, the second deformation feature, and the third deformation feature reaches a preset critical value, the deformation sensor is determined to be a target deformation sensor, and then the collision type is determined according to the location of the target deformation sensor.

[0144] As an example, the processor may determine the collision type of the vehicle through a combination of the first deformation feature, the second deformation feature, and the third deformation feature. For example, if the values ​​of at least two deformation signals of the first deformation feature, the second deformation feature, and the third deformation feature reach a preset critical value, the deformation sensor is determined to be a target deformation sensor, and then the collision type is determined according to the location of the target deformation sensor.

[0145] The collision type may be determined in the same manner as in step S501 in the above embodiment. Please refer to the above embodiment for details, which will not be described in detail here.

[0146] This embodiment determines the degree of collision through deformation characteristic parameters in three dimensions, and can comprehensively analyze the collision situation, and then accurately identify the collision type and perform safety protection control, thereby improving the collision safety performance of the vehicle.

[0147] As an example, see Fig. 9 Based on all the above embodiments, the specific implementation of step S702 may be:

[0148] S901, obtaining a comparison result between a first deformation feature of the deformation sensor and a corresponding first threshold, a comparison result between a second deformation feature and a corresponding first threshold, and a comparison result between a third deformation feature and a corresponding first threshold;

[0149] S902: If the comparison result is that any one of the first deformation feature, the second deformation feature and the third deformation feature of the deformation sensor reaches a first threshold value corresponding thereto, the deformation sensor is determined as a target deformation sensor;

[0150] It should be noted that the preset critical value includes a first threshold value, that is, the first threshold value is a critical value set according to the safety protection level standard based on the consideration of the safety protection of the occupants when a collision occurs. When the value of the first deformation feature, the second deformation feature or the third deformation feature reaches the first threshold value, it is determined that the collision reaches the safety protection level and the safety protection control needs to be activated. Among them, the first threshold value corresponding to the first deformation feature, the first threshold value corresponding to the second deformation feature and the first threshold value corresponding to the third deformation feature can be the same or different, which is not limited in this embodiment.

[0151] Since the deformation signal output by each deformation sensor is processed to obtain the first deformation feature, the second deformation feature and the third deformation feature, the processor can judge the deformation degree (collision degree) of the vehicle through the three deformation features. If only one deformation feature reaches the corresponding first threshold, the deformation sensor is determined to be the target deformation sensor.

[0152] It should be noted that when one of the first deformation feature, the second deformation feature and the third deformation feature reaches its corresponding first threshold value (critical value), it may be that the deformation amplitude is small, the deformation speed is small, and the deformation energy is large, or the deformation amplitude is large, the deformation speed is small, and the deformation energy is small, or the deformation amplitude is small, the deformation speed is small, and the deformation energy is small. In these three cases, the damage to the occupants caused by the collision of the vehicle is relatively small. Therefore, the first threshold value can be used as the critical value for starting the safety protection control.

[0153] In some scenarios, although the deformation amplitude, deformation speed, and deformation energy are small and have not reached the first threshold, if the combination of the two deformation characteristics reaches a certain value, the vehicle occupants are also threatened, and safety protection control needs to be activated at this time. For example, if the deformation speed is large (but has not reached the first threshold), and the deformation energy is also large (but has not reached the first threshold), even if the deformation amplitude is small, according to the deformation speed and deformation energy, the damage to the occupants in the vehicle is predicted to be large, but based on the fact that the three deformation characteristics have not reached the corresponding first threshold, the vehicle does not activate safety protection control, which in turn threatens the safety of the occupants.

[0154] Based on this scenario, the embodiment of the present application further proposes protection control for this scenario, that is, the implementation method also includes:

[0155] S903, obtaining a comparison result between a first deformation feature of the deformation sensor and a corresponding second threshold, a comparison result between a second deformation feature and a corresponding second threshold, and a comparison result between a third deformation feature and a corresponding second threshold;

[0156] S904, if the comparison result is: at least two of the first deformation feature, the second deformation feature and the third deformation feature of the deformation sensor reach the corresponding second threshold, then the deformation sensor is determined as the target deformation sensor; wherein the first threshold is greater than the second threshold;

[0157] It should be noted that the preset critical value also includes a second threshold value, that is, the second threshold value is also based on the safety protection of the occupants in the event of a collision, and is a critical value set according to the safety protection level standard. When at least two of the first deformation feature, the second deformation feature, and the third deformation feature reach the second threshold value, it is determined that the collision reaches the safety protection level and the safety protection control needs to be activated. Among them, the second threshold value corresponding to the first deformation feature, the second threshold value corresponding to the second deformation feature, and the second threshold value corresponding to the third deformation feature can be the same or different, and this embodiment does not limit it.

[0158] If the second deformation feature is large (but does not reach the first threshold), and the third deformation feature is also large (but does not reach the first threshold), based on the deformation speed and deformation energy, it is predicted that the damage to the occupants in the vehicle is also large. In the embodiment of the present application, by configuring the second threshold, and the second threshold is less than the first threshold, in the scenario where the first deformation feature, the second deformation feature, and the third deformation feature have not reached the corresponding first threshold, if at least two of the first deformation feature, the second deformation feature, and the third deformation feature have reached their corresponding second threshold, the deformation sensor is determined to be the target deformation sensor, and then safety protection control is performed. Through the above scheme, it is possible to avoid the problem that the safety protection control does not start in this scenario, resulting in the safety of the occupants not being protected.

[0159] As an example, the first threshold value and the second threshold value corresponding to the first deformation feature, the second deformation feature and the third deformation feature are all pre-set, and the preset critical values ​​are different in different situations, which are specifically determined through multiple experiments and tests. In actual application, the corresponding values ​​are selected for comparison according to actual needs.

[0160] It should be noted that the above steps S901, S902 and S903, S904 are not limited by the described action sequence, and S903, S904 may be performed first, and then S901, S902, or the above steps may be performed simultaneously. That is, if any one of the first deformation feature, the second deformation feature, and the third deformation feature of the deformation sensor reaches the first threshold corresponding thereto, or at least two of the first deformation feature, the second deformation feature, and the third deformation feature of the deformation sensor reach the second threshold corresponding thereto, the deformation sensor may be determined to be the target deformation sensor; or if the first deformation feature, the second deformation feature, and the third deformation feature of the deformation sensor do not reach the first threshold corresponding thereto, it may be determined whether at least two of the first deformation feature, the second deformation feature, and the third deformation feature of the deformation sensor reach the second threshold corresponding thereto.

[0161] S905: Determine a collision type of the vehicle according to a location of at least one target deformation sensor.

[0162] The specific implementation method of this step is the same as above Figure 7 The implementation method of S702 in the embodiment is the same, and specific reference is made to the above embodiment, which will not be repeated here.

[0163] This embodiment makes the vehicle collision safety protection control function richer and more flexibly adaptable to various special scenarios.

[0164] An embodiment of the present invention further provides an electronic device, including a vehicle collision safety protection system, the safety protection system including a deformation sensor and a control unit, the control unit including a processor;

[0165] The processor executes the computer-executable instructions stored in the memory to implement the methods involved in the above embodiments.

[0166] The electronic device also includes a communication interface and a CAN bus, wherein the processor is used to provide computing power and control capabilities, and can be a GPU, CPU, NPU, MCU, FPGA, etc. The storage device includes an internal memory and a non-volatile memory. The non-volatile memory stores a computer program that implements the above method. The internal memory provides an environment for program startup and operation. The communication interface is used to communicate with an external terminal by wire or wireless.

[0167] In this embodiment, the electronic device may be an electronic component in a car, or may be the car.

[0168] The present invention also provides a computer-readable storage medium / computer program product, in which computer-readable storage medium stores computer execution instructions / the computer program product includes computer execution instructions, and when the computer execution instructions are executed by a processor, they are used to implement the methods involved in the above-mentioned embodiments.

[0169] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or change made by a person skilled in the art based on the present invention is within the protection scope of the present invention.

Claims

1. A vehicle collision safety protection system, characterized in that: include: A deformation sensor is arranged at each position of the vehicle, each of the deformation sensors outputs a deformation signal according to the deformation at the corresponding position of the vehicle, the change of the resistance value of the deformation sensor is proportional to the deformation degree of the vehicle, and the deformation signal is determined by the resistance value; A control unit is connected to the deformation sensor and is used to process the deformation signal output by the deformation sensor to extract deformation characteristic parameters, and to control the safety protection of the vehicle according to the deformation characteristic parameters.

2. The vehicle collision safety protection system according to claim 1, characterized in that: The deformation sensor includes a deformation body, which is pasted at various positions of the vehicle; the deformation body includes a conductive layer, an upper base layer, a lower base layer and an adhesive layer, the conductive layer is located between the upper base layer and the lower base layer, and the adhesive layer is arranged on the upper base layer or the lower base layer, and is located on the side opposite to the conductive layer.

3. The vehicle collision safety protection system according to claim 2, characterized in that: The conductive layer is made of polymer conductive material.

4. The vehicle collision safety protection system according to any one of claims 1 to 3, characterized in that: The control unit includes a processor, which outputs the deformation signal as a first deformation feature, performs derivative processing on the first deformation feature and outputs it as a second deformation feature, performs integration processing on the first deformation feature and outputs it as a third deformation feature, wherein the first deformation feature characterizes the deformation amplitude, the second deformation feature characterizes the deformation rate, the third deformation feature characterizes the deformation energy, and the first deformation feature, the second deformation feature and the third deformation feature constitute the deformation feature parameters.

5. The vehicle collision safety protection system according to claim 4, characterized in that: The control unit further includes an A / D conversion module and a DSP unit. The deformation sensor is connected to the A / D conversion module, the A / D conversion module is connected to the DSP unit, and the DSP unit is connected to the processor.

6. The vehicle collision safety protection system according to claim 5, characterized in that: The control unit also includes a plurality of ignition drive modules, which are connected to the output end of the processor, and the output end of the ignition drive module is connected to the execution unit to drive the execution unit to perform safety protection operations on the vehicle.

7. A vehicle collision safety protection method, characterized in that: Applied to a vehicle collision safety protection system, the system includes a deformation sensor and a control unit, the deformation sensor is arranged at various positions of the vehicle, and the method includes: Acquire the deformation signal output by the deformation sensor, and process the deformation signal respectively to obtain the deformation characteristic parameter of each deformation sensor; Determining a collision type of the vehicle according to the deformation characteristic parameter, the collision type comprising at least one of a frontal collision, a side collision, a rear collision, and a battery pack collision; Corresponding safety protection control is performed based on the collision type.

8. The method according to claim 7, characterized in that: The determining the collision type of the vehicle according to the deformation characteristic parameter comprises: Determine a target deformation sensor whose value corresponding to the deformation characteristic parameter reaches a preset critical value; The collision type of the vehicle is determined according to the location of at least one of the target deformation sensors.

9. The method according to claim 8, characterized in that: The method of determining the collision type of the vehicle according to the deformation characteristic parameter further includes: When determining that the deformation sensor whose deformation signal changes is in different directions, obtaining a first critical value as the preset critical value; When it is determined that the deformation sensors whose deformation signals change are in the same direction, a second critical value is obtained as the preset critical value, wherein the first critical value is smaller than the second critical value.

10. The method according to claim 7, characterized in that: The acquiring the deformation signal output by the deformation sensor and processing the deformation signal respectively to obtain the deformation characteristic parameter of each deformation sensor includes: Acquire the deformation signal output by the deformation sensor, and perform numerical conversion and filtering on the deformation signal of each deformation sensor; The deformation feature after numerical conversion and filtering is saved as a first deformation feature, wherein the first deformation feature represents the deformation amplitude; performing a derivative process on the first deformation feature and saving the result as a second deformation feature, wherein the second deformation feature represents the deformation rate; performing integration processing on the first deformation feature and saving the result as a third deformation feature, wherein the third deformation feature represents the deformation energy; The first deformation feature, the second deformation feature and the third deformation feature constitute the deformation feature parameters.

11. The method according to claim 10, characterized in that: The determining the collision type of the vehicle according to the deformation characteristic parameter comprises: Respectively obtaining comparison results of the first deformation feature, the second deformation feature and the third deformation feature of the deformation sensor and the first threshold value corresponding thereto, and respectively obtaining the first deformation feature, the second deformation feature and the third deformation feature of the deformation sensor and the second threshold value corresponding thereto for comparison; If the comparison result is that any one of the first deformation feature, the second deformation feature and the third deformation feature of the deformation sensor reaches a first threshold value corresponding thereto, then the deformation sensor is determined as a target deformation sensor; If the comparison result is that at least two of the first deformation feature, the second deformation feature and the third deformation feature of the deformation sensor reach the second threshold value corresponding thereto, the deformation sensor is determined to be the target deformation sensor; wherein the first threshold value is greater than the second threshold value; The collision type of the vehicle is determined according to the location of at least one of the target deformation sensors.

12. The method according to claim 7, characterized in that The performing corresponding safety protection control based on the collision type includes: The collision type is a frontal collision, the front airbag is controlled to be deployed, and the seat belt is controlled to be pre-tightened; If the collision type is a side collision, the side air curtain is controlled to be opened and the seat belt is controlled to be pre-tensioned; The collision type is a rear collision, and the seat belt pre-tensioning is controlled; The collision type is a battery pack collision, the duration is recorded, and when the duration reaches a preset duration, a safety warning message is output.

13. An electronic device, characterized in that: A vehicle collision safety protection system is included, wherein the safety protection system includes a deformation sensor and a control unit, and the control unit includes a processor; The processor executes the computer-executable instructions stored in the memory to implement the method according to any one of claims 7 to 12.

14. A computer-readable storage medium / computer program product, characterized in that: The computer-readable storage medium stores computer-executable instructions / the computer program product includes computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the method according to any one of claims 7 to 12.

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