Multi-dimensional force sensor for automobile crash test

Abstract

The utility model provides a multi-dimensional force sensor for an automobile crash test, which relates to the field of multi-dimensional force sensors and comprises a supporting assembly, a measuring assembly is mounted on the surface of the supporting assembly, the supporting assembly is used for supporting the measuring assembly, and the measuring assembly is used for measuring crash data. The supporting assembly comprises a supporting rod, a lug plate, a first elastic clamp, a second elastic clamp, a supporting plate and a fastening bolt. According to the utility model, through cooperation of the supporting rod, the lug plate, the first elastic clamp, the second elastic clamp, the supporting plate and the fastening bolt, a stable supporting effect can be provided for the measuring assembly, and through cooperation of the second elastic clamp, the supporting plate and the fastening bolt, the installation position of the measuring assembly can be adjusted. Through cooperation of the supporting rod, the lug plate, the first elastic clamp and the fastening bolt, the measuring assembly can be supported, the measuring accuracy and reliability of the measuring assembly are ensured, and therefore the accuracy of the measuring result is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of multidimensional force sensor, concretely is a kind of multidimensional force sensor for automobile crash test. BACKGROUND

[0002] Multidimensional force sensor is a kind of force sensor that can measure more than two directions force and torque component, in Cartesian coordinate system, force and torque can be each decomposed into three components, therefore, the most complete form of multidimensional force is six-dimensional force / torque sensor, i.e. the sensor that can measure three force components and three torque components simultaneously, multidimensional force sensor is based on the combination of physical mechanics and electronic technology, its core function is to detect and measure the collision or impact between objects, and convert this physical phenomenon into electrical signals, these electrical signals are then transmitted to signal processing circuit for amplification and filtering, for subsequent analysis and processing;

[0003] Multidimensional force sensor is usually used in automobile crash test, according to the data measured by multidimensional force sensor, automobile manufacturers can adjust the design of airbags, seat belts, seats and other components of the automobile, so that they can better protect passengers in the event of a collision, in addition, the sensor can also be used to measure the force and torque received by each part of the automobile during driving, to help engineers optimize the design of suspension system and improve the driving comfort and stability of the automobile;

[0004] The installation position and solid of multidimensional force sensor are extremely important in automobile crash test, and multidimensional force sensor is usually fixed directly on the automobile suspension, crash beam and other positions, although it can measure the data of collision, but in the process of collision test, the sensor needs to bear huge impact force and torque, and the lack of corresponding fixing device will cause the sensor to displace in the process of collision, thereby affecting the accuracy of measurement results.

[0005] Therefore, the utility model provides a kind of multidimensional force sensor for automobile crash test to solve the above problems. UTILITY MODEL CONTENT

[0006] To solve the above technical problems, the utility model provides the following technical scheme:

[0007] A kind of multidimensional force sensor for automobile crash test, including support component, the surface of support component is equipped with measurement component, the support component is used to provide support to measurement component, the measurement component is used to measure collision data, the support component includes support rod, ear plate, first elastic clamp, second elastic clamp, support plate and fastening bolt, the surface of first elastic clamp and second elastic clamp is equipped with fastening bolt, the ear plate, first elastic clamp and second elastic clamp are all set on the surface of support rod, one end of the support plate is fixedly connected with second elastic clamp, the measurement component is installed on the top of support plate.

[0008] Further, in the utility model, the ear plate and first elastic clamp are located one end of the support rod surface, the second elastic clamp and support plate are located the other end of the ear plate surface.

[0009] Further, in the utility model, the first elastic clamp and second elastic clamp are all with fastening bolt thread connection, the ear plate is connected fixedly with the first elastic clamp.

[0010] Further, in the utility model, the measuring assembly includes top cover, base, connecting seat, elastic matrix, resistance strain gauge, signal processing circuit and output plug, the signal processing circuit is fixed in the inner chamber of base.

[0011] Further, in the utility model, the output plug input end is connected with the output end of signal processing circuit, the resistance strain gauge is fixed in the bottom of connecting seat inner chamber, one end of elastic matrix extends to the inner chamber of connecting seat and is bonded with resistance strain gauge.

[0012] Further, in the utility model, the top cover and base are fixed on the top and bottom of connecting seat respectively, and the output end of resistance strain gauge is connected with the input end of signal processing circuit.

[0013] Beneficial effects, the utility model has following beneficial effects:

[0014] The utility model discloses a measuring assembly is set up, has played the effect of being capable of measuring the collision force and the moment in the automobile crash test to the effect that can understand the dynamic response characteristic of automobile when crashing, provides the key data support for the automobile safety performance evaluation and improvement, through the cooperation of support rod, ear plate, first elastic clamp, second elastic clamp, support plate and fastening bolt, can provide the effect of stable support to measuring assembly, through the cooperation of second elastic clamp, support plate and fastening bolt, can adjust the installation position of measuring assembly, through the cooperation of support rod, ear plate, first elastic clamp and fastening bolt, can support measuring assembly, ensure the accuracy and reliability of measuring assembly measurement, thereby effectively improve the accuracy of measurement result. ACCURACY

[0015] Figure 1 It is the main view structural schematic diagram of the utility model;

[0016] Figure 2 It is the separation state structure schematic diagram of the support assembly of the utility model;

[0017] Figure 3 It is the front view cross section structure schematic diagram of the measuring assembly of the utility model;

[0018] Figure 4It is system flow schematic diagram of the utility model measurement assembly.

[0019] In the drawing:

[0020] 1, support assembly; 101, support rod; 102, ear plate; 103, first elastic clamp; 104, second elastic clamp; 105, support plate; 106, fastening bolt; 2, measurement assembly; 201, top cover; 202, base; 203, connecting seat; 204, elastic matrix; 205, resistance strain gauge; 206, signal processing circuit; 207, output plug. DETAILED DESCRIPTION

[0021] In order to more understand the technical content of the utility model, specific embodiments are raised and the following is described with the attached drawings. In the present disclosure, the aspects of the utility model are described with reference to the drawings, and many illustrated embodiments are shown in the drawings. The embodiments of the present disclosure are not necessarily defined in all aspects including the utility model. It should be understood that the various concepts and embodiments introduced above, and those concepts and embodiments described in more detail below, can be implemented in any one of many ways, because the concepts and embodiments disclosed by the utility model are not limited to any implementation. In addition, some aspects of the utility model can be used alone, or used in any appropriate combination with other aspects of the utility model.

[0022] Embodiment 1

[0023] As Figures 1-4 shown, it is the first embodiment of the utility model, and the embodiment provides a multi-dimensional force sensor for automobile crash test, which comprises a support assembly 1, a measurement assembly 2 is mounted on the surface of the support assembly 1, the support assembly 1 is used to provide support for the measurement assembly 2, the measurement assembly 2 is used to measure crash data, the support assembly 1 comprises a support rod 101, an ear plate 102, a first elastic clamp 103, a second elastic clamp 104, a support plate 105 and a fastening bolt 106, the surface of the first elastic clamp 103 and the second elastic clamp 104 is mounted with the fastening bolt 106, the ear plate 102, the first elastic clamp 103 and the second elastic clamp 104 are sleeved on the surface of the support rod 101, one end of the support plate 105 is fixedly connected with the second elastic clamp 104, and the measurement assembly 2 is installed on the top of the support plate 105.

[0024] As Figures 1-4As shown, one end of the support rod 101 is penetrated through the ear plate 102, the first elastic clamp 103 is fastened by the fastening bolt 106, the ear plate 102 and the first elastic clamp 103 can be fixed on the surface of the support rod 101, then the ear plate 102 is fixed on the automobile parts by the bolt, can be fixed on the suspension, the crash beam, then the second elastic clamp 104 is sleeved on the other end of the support rod 101, the second elastic clamp 104 is fastened by the fastening bolt 106, the second elastic clamp 104 and the support plate 105 can be fixed on the surface of the support rod 101, after the second elastic clamp 104 is sleeved on the surface of the support rod 101, the second elastic clamp 104 can be rotated, the support direction of the support plate 105 is adjusted, so that the measurement direction of the measurement assembly 2 can be adjusted, finally the measurement assembly 2 is fixed on the surface of the support plate 105 by the bolt, so that the measurement assembly 2 can be stably supported, and the force and the torque of the collision can be accurately measured.

[0025] Embodiment 2

[0026] With reference to Figures 1-4 For the second embodiment of the utility model, the embodiment is based on the previous embodiment.

[0027] In the embodiment, the ear plate 102 and the first elastic clamp 103 are located at one end of the surface of the support rod 101, and the second elastic clamp 104 and the support plate 105 are located at the other end of the surface of the ear plate 102.

[0028] The first elastic clamp 103 and the second elastic clamp 104 are in threaded connection with the fastening bolt 106, and the ear plate 102 is fixedly connected with the first elastic clamp 103.

[0029] The measurement assembly 2 comprises a top cover 201, a base 202, a connecting seat 203, an elastic matrix 204, a resistance strain gage 205, a signal processing circuit 206 and an output plug 207, and the signal processing circuit 206 is fixed in the inner cavity of the base 202.

[0030] The input end of the output plug 207 is connected with the output end of the signal processing circuit 206, the resistance strain gage 205 is fixed at the bottom of the inner cavity of the connecting seat 203, and one end of the elastic matrix 204 extends into the inner cavity of the connecting seat 203 and is bonded with the resistance strain gage 205.

[0031] The top cover 201 and the base 202 are fixed at the top and the bottom of the connecting seat 203 respectively, and the output end of the resistance strain gage 205 is connected with the input end of the signal processing circuit 206.

[0032] As Figures 1-4As shown, the base 202 is connected with the support plate 105 through bolts, which can facilitate the disassembly and replacement of the measuring assembly 2, the top cover 201, the base 202 and the connecting seat 203 can provide protection and mounting space for the internal circuit elements, the elastic matrix 204 is connected with the resistance strain gauge 205 based on the strain transmission principle, the elastic matrix 204 and the resistance strain gauge 205 are bonded through an adhesive, when the elastic matrix 204 is subjected to external force, it will elastically deform, the deformation of the elastic matrix 204 is transmitted to the resistance strain gauge 205, the resistance strain gauge 205 deforms following the deformation of the elastic matrix 204, which causes the length and cross-sectional area of the internal resistance wire to change, thereby causing the resistance value to change, this change in resistance value is proportional to the deformation amount of the elastic body, therefore, the deformation amount of the elastic body can be calculated by measuring the resistance value of the resistance strain gauge, the signal processing circuit 206 is composed of a Wheatstone bridge circuit, a signal conditioning circuit and a data processing chip, the resistance change of the resistance strain gauge 205 is converted into a voltage signal through the Wheatstone bridge circuit, the Wheatstone bridge circuit has high sensitivity and good linearity, which can effectively convert the small resistance change of the strain gauge into a voltage signal that is easy to measure and process, the signal conditioning circuit amplifies, filters, compensates and processes the voltage signal output by the Wheatstone bridge circuit, so as to obtain more stable and accurate measurement results, the voltage signal after signal conditioning and processing is further converted into a digital signal for analysis and processing through the data processing chip, so as to measure the force and torque when the automobile collides, the data can be connected with the host through the output plug 207, the output plug 207 can be selected as an aviation plug for convenient and fast connection.

[0033] In use, first, one end of the support rod 101 penetrates the ear plate 102, the first elastic clamp 103 is fastened through the fastening bolt 106, so that the ear plate 102 and the first elastic clamp 103 can be fixed on the surface of the support rod 101, then the ear plate 102 is fixed on the automobile parts through the bolt, which can be fixed on the suspension and the anti-collision beam, then the second elastic clamp 104 is sleeved on the other end of the support rod 101, the second elastic clamp 104 is fastened through the fastening bolt 106, so that the second elastic clamp 104 and the support plate 105 can be fixed on the surface of the support rod 101, after the second elastic clamp 104 is sleeved on the surface of the support rod 101, the second elastic clamp 104 can be rotated to adjust the support direction of the support plate 105, so as to adjust the measurement direction of the measuring assembly 2, finally, the measuring assembly 2 is fixed on the surface of the support plate 105 through the bolt, so as to provide stable support for the measuring assembly 2, so that it can accurately measure the force and torque of the collision;

[0034] When the elastic base 204 is subjected to an external force, elastic deformation occurs, and the elastic base 204 is deformed and transmitted to the resistance strain gauge 205, the resistance strain gauge 205 deforms along with the deformation of the elastic base 204, which causes the length and cross-sectional area of the internal resistance wire to change, thereby causing the resistance value to change, and the change in the resistance value is proportional to the deformation amount of the elastic body, so the deformation amount of the elastic body can be calculated by measuring the resistance value of the resistance strain gauge 205, the signal processing circuit 206 is composed of a Wheatstone bridge circuit, a signal conditioning circuit and a data processing chip, the resistance change of the resistance strain gauge 205 is converted into a voltage signal through the Wheatstone bridge circuit, the Wheatstone bridge circuit has high sensitivity and good linearity, and can effectively convert the small resistance change of the strain gauge into a voltage signal easy to measure and process, the signal conditioning circuit amplifies, filters, compensates and processes the voltage signal output by the Wheatstone bridge circuit, so as to obtain more stable and accurate measurement results, and the voltage signal after signal conditioning and processing is further converted into a digital signal for analysis and processing through the data processing chip, so that the force and torque during the collision of the automobile can be measured, and the data can be connected with the host through the output plug 207, and the output plug 207 can be selected as an aviation plug for convenient and rapid connection.

[0035] The standard parts used in the present application can be purchased from the market, and can be ordered according to the description and drawings, and the specific connection mode of each part adopts the conventional screw, rivet, welding and other conventional means in the prior art, the mechanical, parts and equipment adopt the conventional type in the prior art, the control mode is automatically controlled through the controller, the control circuit of the controller can be realized by simple programming of the person skilled in the art, which belongs to the common knowledge in the art, and the present application is mainly used to protect the mechanical device, so the control mode and circuit connection will not be explained in detail.

[0036] Although the present application has been disclosed with the above preferred embodiments, it is not intended to limit the present application. Those skilled in the art can make various modifications and decorations without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application shall be subject to the definition of the claims.

Claims

1. A multi-dimensional force sensor for automobile crash testing, comprising a support assembly (1), characterized in that: The surface of the support assembly (1) is equipped with a measuring assembly (2). The support assembly (1) is used to provide support for the measuring assembly (2). The measuring assembly (2) is used to measure collision data. The support assembly (1) includes a support rod (101), an ear plate (102), a first elastic clip (103), a second elastic clip (104), a support plate (105), and fastening bolts (106). Fastening bolts (106) are installed on the surfaces of the first elastic clip (103) and the second elastic clip (104). The ear plate (102), the first elastic clip (103), and the second elastic clip (104) are all sleeved on the surface of the support rod (101). One end of the support plate (105) is fixedly connected to the second elastic clip (104). The measuring assembly (2) is installed on the top of the support plate (105).

2. The multi-dimensional force sensor for automobile crash testing as described in claim 1, characterized in that: The ear plate (102) and the first elastic clip (103) are located at one end of the surface of the support rod (101), and the second elastic clip (104) and the support plate (105) are located at the other end of the surface of the ear plate (102).

3. The multi-dimensional force sensor for automobile crash testing as described in claim 1, characterized in that: The first elastic clip (103) and the second elastic clip (104) are both threadedly connected to the fastening bolt (106), and the ear plate (102) is fixedly connected to the first elastic clip (103).

4. The multi-dimensional force sensor for automobile crash testing as described in claim 1, characterized in that: The measuring component (2) includes a top cover (201), a base (202), a connecting seat (203), an elastic matrix (204), a resistance strain gauge (205), a signal processing circuit (206), and an output plug (207), wherein the signal processing circuit (206) is fixed to the inner cavity of the base (202).

5. The multi-dimensional force sensor for automobile crash testing as described in claim 4, characterized in that: The input end of the output plug (207) is connected to the output end of the signal processing circuit (206), the resistance strain gauge (205) is fixed to the bottom of the inner cavity of the connector (203), and one end of the elastic matrix (204) extends into the inner cavity of the connector (203) and is bonded to the resistance strain gauge (205).

6. The multi-dimensional force sensor for automobile crash testing as described in claim 4, characterized in that: The top cover (201) and the base (202) are fixed to the top and bottom of the connecting seat (203) respectively, and the output end of the resistance strain gauge (205) is connected to the input end of the signal processing circuit (206).

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