Crash dummy chest protection evaluation device and method and electronic equipment

Abstract

The invention provides a collision dummy chest protection evaluation device and method and electronic equipment, and the device comprises dummy arm bodies which are provided with shoulder joint installation positions, and the shoulder joint installation positions are provided with annular resistance slide ways; the dummy shoulder joint body is rotationally connected with the dummy arm body, and a resistance lapping contact point is arranged on one side, close to the shoulder joint mounting position, of the dummy shoulder joint body and located in the circumferential resistance slide way; and the power supply is respectively connected with the circumferential resistor slideway and the resistor lapping contact point to form a test loop, and the test loop is used for outputting a first electric signal when the resistor lapping contact point moves relative to the circumferential resistor slideway. The rotation angle of the dummy arm body relative to the dummy shoulder joint body is quantified through the measured first electric signal, so that the lifting condition of the dummy arm body is accurately judged, and a reliable basis is provided for judging whether a dummy chest protection test passes or not.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle collision testing, and in particular to a collision dummy chest protection evaluation device, method and electronic equipment. Background Art

[0002] During a vehicle collision test, if the vehicle's side airbag opens and lifts up the collision dummy's arm, the dummy's chest protection test is determined to have passed. Currently, staff can only observe the positional relationship between the collision dummy's arm and chest in the image captured by a high-speed camera to determine whether the dummy's chest protection test has passed. However, this observation method is rough and cannot provide accurate quantitative data on the positional relationship between the arm and chest. Therefore, it is impossible to quantitatively evaluate the arm lifting situation, that is, it is impossible to accurately determine whether the dummy's chest protection test has passed. Summary of the invention

[0003] In view of this, the purpose of the present application is to propose a collision dummy chest protection evaluation device, method and electronic equipment to quantitatively evaluate the arm lifting situation in the vehicle collision test and solve the problem of being unable to accurately determine whether the dummy chest protection test has passed.

[0004] Based on the above purpose, the present application provides a collision dummy chest protection evaluation device, comprising:

[0005] The dummy arm body is provided with a shoulder joint mounting position, and the shoulder joint mounting position is provided with a circumferential resistance slideway;

[0006] A dummy shoulder joint body is rotatably connected to the dummy arm body, and a resistance contact head is provided on a side close to the shoulder joint installation position. The resistance contact head is located in the annular resistance slideway and can move in the annular resistance slideway as the dummy arm body rotates relative to the dummy shoulder joint body;

[0007] A power supply is respectively connected to the annular resistance slide and the resistance bonding contact to form a test loop, wherein the test loop is used to output a first electrical signal when the resistance bonding contact moves relative to the annular resistance slide.

[0008] Based on the same inventive concept, the present disclosure also provides a crash dummy chest protection evaluation method, which is applied to a crash dummy chest protection evaluation device, and the method includes:

[0009] Acquire first electrical signals at multiple moments during the collision test;

[0010] Determine the rotation angle of the dummy arm body relative to the dummy shoulder joint body at multiple times based on each of the first electrical signals, and determine the target rotation angle based on the multiple rotation angles;

[0011] In response to determining that the target rotation angle is less than or equal to a first preset angle and greater than a second preset angle, determining that the chest protection test passes;

[0012] In response to determining that the target rotation angle is less than or equal to a third preset angle, determining that the chest protection test fails;

[0013] The first preset angle is greater than the second preset angle, and the second preset angle is greater than the third preset angle.

[0014] Based on the same inventive concept, the present disclosure also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable by the processor, wherein the processor implements the method as described above when executing the computer program.

[0015] As can be seen from the above, the present application provides a collision dummy chest protection evaluation device, method and electronic device, wherein in the device, an annular resistance slide is set at the shoulder joint installation position in the dummy arm body, and a resistance bonding contact head is set on the side of the dummy shoulder joint body close to the shoulder joint installation position, and the resistance bonding contact head is located in the annular resistance slide and can move in the annular resistance slide as the dummy arm body rotates relative to the dummy shoulder joint body; the power supply connects the annular resistance slide with the resistance bonding contact head to form a test loop, and the annular resistance slide in the test loop is combined with the resistance bonding contact head to form a sliding rheostat, and the current in the test loop or the voltage division of the sliding rheostat will be different due to the different positions of the resistance bonding contact head in the annular resistance slide. The test loop outputs the different current or voltage division as the first electrical signal, so that the rotation angle of the dummy arm body relative to the dummy shoulder joint body can be quantified, thereby accurately judging the lifting of the dummy arm body, and providing a reliable basis for judging whether the dummy chest protection test is passed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of the coordination structure between the dummy arm body and the dummy shoulder joint body according to an embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of the annular resistance slide structure of the dummy arm body of an embodiment of the present application;

[0019] Figure 3 A schematic diagram of the positions of the first mark position and the second mark position of the annular resistance slide in an embodiment of the present application;

[0020] Figure 4 A three-dimensional schematic diagram of a dummy shoulder joint body according to an embodiment of the present application;

[0021] Figure 5 A schematic plan view of a dummy shoulder joint body according to an embodiment of the present application;

[0022] Figure 6 A schematic diagram of a test circuit according to an embodiment of the present application;

[0023] Figure 7 This is a schematic diagram of a dummy rib body according to an embodiment of the present application;

[0024] Figure 8 This is a schematic flow chart of a method for evaluating chest protection of a collision dummy according to an embodiment of the present application;

[0025] Fig. 9 This is a schematic diagram of a collision dummy chest protection evaluation device according to an embodiment of the present application;

[0026] Fig.10 A schematic diagram of an electronic device according to an embodiment of the present application.

[0027] In the figure: 100, dummy arm body; 101, shoulder joint mounting position; 102, annular resistor slide; 103, first mark position; 104, second mark position; 105, mounting hole; 200, dummy shoulder joint body; 201, resistor landing contact head; 202, mounting protrusion; 203, charging interface; 204, signal acquisition interface; 300, circuit board; 301, power supply; 302, voltage detection module; 303, fixed resistor; 304, switch; 400, dummy rib body; 401, thin-film pressure sensor. DETAILED DESCRIPTION

[0028] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0029] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0030] As described in the background technology, the automobile collision dummy is the core equipment of automobile collision safety detection. In the side impact test, the collision dummy can use World SID (World Side Impact Dummies, international general side impact dummy), and the positional relationship between its arms and chest has a great influence on chest protection. If the side airbag does not lift the arm during the collision, the arm will press the chest ribs under the action of the airbag and the door panel, which will have an adverse effect on chest protection; if the side airbag can lift the arm, the arm will not press the chest ribs, which will have a positive effect on chest protection. Therefore, if the exact positional relationship between the arm and the chest can be accurately determined during the collision, accurate guidance can be provided for the optimization of the vehicle restraint system. Among them, the vehicle restraint system refers to the general term for all components in the car that restrict the movement of members when the car collides. These components include seat belts, airbags, seats, dashboards, steering columns, doors, safety glass, and interior trims, etc., which are intended to reduce the injuries of passengers in car collisions.

[0031] However, due to the limitation of the method, the staff can only observe the positional relationship between the arm and chest of the collision dummy from the picture taken by the high-speed camera. This observation method is rough, and the observation results are different at different observation angles. It can only roughly judge the positional relationship between the arm and the chest, and cannot accurately and quantitatively describe it, so it is impossible to accurately provide data results. That is, the collision dummy in the related art cannot provide accurate quantitative positional relationship data between the arm and the chest, nor can it provide data on the interaction force between the arm and the chest, so it is impossible to quantitatively evaluate the arm lifting situation, and then it is impossible to accurately judge whether the dummy chest protection test has passed.

[0032] In order to solve the above technical problems, the applicant found that as long as the rotation angle of the arm in the shoulder joint can be quantified and the compression of the arm on the chest ribs can be further quantified, the positional relationship between the arm and the chest ribs can be comprehensively judged, providing a reliable basis for accurately judging whether the dummy chest protection test has passed.

[0033] The following is combined with Figure 1-7 An embodiment of the collision dummy chest protection evaluation device of the present application is described.

[0034] In some embodiments, Figure 1-Figure 6 As shown, a collision dummy chest protection evaluation device comprises:

[0035] The dummy arm body 100 is provided with a shoulder joint installation position 101, and the shoulder joint installation position 101 is provided with a circular resistance slide 102;

[0036] A dummy shoulder joint body 200 is rotatably connected to the dummy arm body 100, and a resistance contact head 201 is provided on a side close to the shoulder joint mounting position 101. The resistance contact head 201 is located in the annular resistance slideway 102 and can move in the annular resistance slideway 102 as the dummy arm body 100 rotates relative to the dummy shoulder joint body 200;

[0037] The power supply 301 is respectively connected to the annular resistance slideway 102 and the resistance bonding contact head 201 to form a test loop, and the test loop is used to output a first electrical signal when the resistance bonding contact head 201 moves relative to the annular resistance slideway 102.

[0038] Among them, the annular resistance slide 102 and the resistance bonding contact head 201 are both conductors. The annular resistance slide 102 is laid by winding resistance wire. Specifically, the resistance wire material can be constantan wire or nickel-chromium alloy wire, and the material of the resistance bonding contact head 201 can be copper or aluminum.

[0039] Among them, the power supply 301 can be a thin-film battery located in the dummy shoulder joint body 200. It can be understood that in order to realize the connection between the annular resistance slide 102 and the power supply 301, the dummy shoulder joint body 200 and the dummy arm body 100 will both have electrical interfaces. The two electrical interfaces are connected by wires to realize the connection between the annular resistance slide 102 and the power supply 301; similarly, in order to realize the connection between the resistance bonding contact head 201 and the power supply 301, an electrical interface is opened on the dummy shoulder joint body 200, and a plug-in terminal is provided at the end of the resistance bonding contact head 201. The connection between the plug-in terminal and the electrical interface can realize the connection between the resistance bonding contact head 201 and the power supply 301.

[0040] Specifically, a shoulder joint mounting position 101 is recessed at the top of the dummy arm body 100 in a direction perpendicular to the dummy arm body 100, a mounting hole 105 is provided in the middle of the shoulder joint mounting position 101, and a circular resistance slide 102 is also provided in the shoulder joint mounting position 101 with the geometric center of the mounting hole 105 as the center of a circle; a mounting protrusion 202 and a resistance contact head 201 are provided on one side of the dummy shoulder joint body 200 close to the shoulder joint mounting position 101, and when the mounting protrusion 202 is mounted to the mounting hole 105, the resistance contact head 201 is located in the circular resistance slide 102. When the dummy arm body 100 rotates relative to the dummy shoulder joint body 200, the resistance contact head 201 moves in the circular resistance slide 102. The combination of the resistor bonding contact head 201 and the annular resistor slide 102 forms a sliding rheostat. As long as the sliding rheostat is connected to the power supply 301, a test circuit can be formed. The current in the test circuit or the voltage division of the sliding rheostat will be different due to the different positions of the resistor bonding contact head 201 on the annular resistor slide 102. The test circuit outputs the different current or voltage division as a first electrical signal, so as to quantify the rotation angle of the dummy arm body 100 relative to the dummy shoulder joint body 200.

[0041] In this embodiment, a circular resistance slide 102 is set at the shoulder joint installation position 101 in the dummy arm body 100, and a resistance landing contact head 201 is set on the side of the dummy shoulder joint body 200 close to the shoulder joint installation position 101. The resistance landing contact head 201 is located in the circular resistance slide 102 and can move in the circular resistance slide 102 as the dummy arm body 100 rotates relative to the dummy shoulder joint body 200; the power supply 301 connects the circular resistance slide 102 with the resistance landing contact head 201 to form a test circuit. The annular resistance slide 102 in the test loop is combined with the resistance bonding contact head 201 to form a sliding rheostat. The current in the test loop or the voltage division of the sliding rheostat will be different due to the different positions of the resistance bonding contact head 201 on the annular resistance slide 102. The test loop outputs the different current or voltage division as the first electrical signal, which can quantify the rotation angle of the dummy arm body 100 relative to the dummy shoulder joint body 200, thereby accurately judging the lifting status of the dummy arm body 100 and providing a reliable basis for judging whether the dummy chest protection test has been passed.

[0042] In some embodiments, reference Figure 3The annular resistance slide 102 has a first mark position 103 and a second mark position 104. When the dummy arm body 100 naturally hangs down relative to the dummy shoulder joint body 200, the resistance contact head 201 contacts the first mark position 103; when the dummy arm body 100 is lifted up relative to the dummy shoulder joint body 200 and rotated to a preset angle, the resistance contact head 201 slides from the first mark position 103 to contact the second mark position 104 in the annular resistance slide 102;

[0043] The first flag 103 is connected to the power supply 301 .

[0044] Among them, the first mark position 103 is used to indicate the contact point between the resistance contact head 201 and the annular resistance slide 102 when the dummy arm body 100 naturally hangs down relative to the dummy shoulder joint body 200, that is, the first mark position 103 represents that the lifting height of the dummy arm body 100 is 0°; the second mark position 104 is used to indicate the contact point between the resistance contact head 201 and the annular resistance slide 102 when the dummy arm body 100 is lifted and rotated to a preset angle relative to the dummy shoulder joint body 200. The preset angle can be the maximum angle to which the dummy arm body 100 is lifted and rotated relative to the dummy shoulder joint body 200 during the dummy collision process. For example, the maximum angle is 120°, that is, the second mark position 104 represents that the lifting height of the dummy arm body 100 is 120°. Based on this, the first flag position 103 and the second flag position 104 can be understood as the two endpoints of the sliding rheostat, and the first flag position 103 is connected to the power supply 301. When the resistor bonding contact head 201 is in contact with the first flag position 103, its resistance value is calibrated to be 0. When the resistor bonding contact head 201 is in contact with the second flag position 104, its resistance value is Rx. When the resistor bonding contact head 201 slides from the first flag position 103 to the second flag position 104 in the annular resistor slide 102, the resistance value of the sliding rheostat in the test loop gradually increases from 0 to Rx. That is to say, when the resistor bonding contact head 201 contacts the first mark position 103, the resistance value of the sliding rheostat in the test circuit is 0, and represents that the lifting height of the dummy arm body 100 is 0°; when the resistor bonding contact head 201 contacts the second mark position 104, the resistance value of the sliding rheostat in the test circuit is Rx, and represents that the lifting height of the dummy arm body 100 is 120°.

[0045] In this embodiment, a first mark position 103 and a second mark position 104 are set on the annular resistance slide 102. The first mark position 103 is used to indicate the contact point between the resistance landing contact head 201 and the annular resistance slide 102 when the dummy arm body 100 naturally hangs down relative to the dummy shoulder joint body 200. The second mark position 104 is used to indicate the contact point between the resistance landing contact head 201 and the annular resistance slide 102 when the dummy arm body 100 is lifted up and rotated to a preset angle relative to the dummy shoulder joint body 200. The two mark positions can be used as the two end points of the sliding rheostat, and the lifting height of the dummy arm body 100 corresponding to different resistance values ​​of the sliding rheostat can be calibrated thereby, thereby realizing accurate judgment of the lifting status of the dummy arm body 100 and providing a reliable basis for judging whether the dummy chest protection test has been passed.

[0046] In some embodiments, reference Figure 6 The test loop includes a voltage detection module 302, and the voltage detection module 302 is arranged in parallel with the annular resistance slide 102. The voltage detection module 302 can be a voltmeter for measuring the divided voltage of the resistance of the annular resistance slide 102 connected to the test loop, and the divided voltage can be output as the first electrical signal.

[0047] In addition, the test loop includes a fixed resistor 303 and a switch 304, and the fixed resistor 303 and the switch 304 are both connected in series with the annular resistance slide 102. Among them, the fixed resistor 303 mainly plays a role in protecting the test loop. For example, when the resistance value of the sliding rheostat formed by the resistance bonding contact head 201 and the annular resistance slide 102 is adjusted to the minimum, that is, when the resistance bonding contact head 201 is connected to the first flag position 103, if there is no fixed resistor 303, the entire test loop is equivalent to a short circuit, which may cause damage to other components in the circuit (such as switch 304). Setting a fixed resistor 303 can prevent this from happening and play a role in protecting the circuit. Among them, the switch 304 can be an electrically controlled switch 304. When the collision test starts, the electrically controlled switch 304 conducts the test loop after receiving a remote control start signal.

[0048] In this embodiment, the voltage detection module 302 is used to measure the divided voltage of the partial resistance of the annular resistance slide 102 connected to the test loop, the fixed resistor 303 is used to protect the test loop, and the switch 304 is used to conduct the entire test loop, thereby providing a simple and practical test loop.

[0049] In some embodiments, reference Figure 4 , Figure 5 , Figure 6The dummy shoulder joint body 200 is embedded with a circuit board 300, and the power supply 301, voltage detection module 302, fixed resistor 303 and switch 304 are all integrated on the circuit board 300. This integrated setting facilitates the installation and replacement of the test circuit and saves installation space. In addition, the circuit board 300 is set in the dummy shoulder joint body 200 instead of the dummy arm body 100 because the impact force on the dummy arm during the collision test is much greater than the shoulder joint body. Therefore, setting it in the shoulder joint body is conducive to protecting the circuit board 300 and extending the service life of the circuit board 300.

[0050] In addition, the dummy shoulder joint body 200 is provided with a signal acquisition interface 204, and the signal acquisition interface 204 is connected to the voltage detection module 302, so that the signal acquisition interface 204 can collect the voltage value measured by the voltage detection module 302, and send the voltage value as a first electrical signal to an electronic device (such as a computer) for analysis and processing.

[0051] In addition, the dummy shoulder joint body 200 is provided with a charging interface 203, and the charging interface 203 is connected to the power source 301, thereby performing charging and discharging operations on the power source 301, so that the power source 301 is continuously available.

[0052] In some embodiments, reference Figure 7 The collision dummy chest protection evaluation device also includes a dummy rib body 400, the surface of the dummy rib body 400 is covered with a thin-film pressure sensor 401, and the thin-film pressure sensor 401 is used to output a second electrical signal, and the second electrical signal is used to indicate the compression amount of the dummy arm body 100 on the dummy rib body 400.

[0053] The thin-sheet pressure sensor is characterized by being light and thin. For example, the thickness of the thin-sheet pressure sensor is less than 1 mm and the weight is 5 g. When installed on the surface of the dummy rib body 400, it will not affect the dummy structure or the weight of the dummy. By installing the thin-sheet sensor, the compression amount of the dummy arm body 100 on the dummy rib body 400 can be detected, providing more abundant and necessary data for accurately judging and quantitatively determining the compression time and compression pressure between the arm and the chest.

[0054] The above embodiments are improvements to the structure of the collision dummy chest protection evaluation device. The following embodiments further illustrate the related collision dummy chest protection evaluation method based on the collision dummy chest protection evaluation device. The control method is executed by a processor.

[0055] In some embodiments, reference Figure 8 , the crash dummy chest protection evaluation method includes:

[0056] S101, obtaining first electrical signals at multiple moments during a collision test;

[0057] In this step, the first electrical signals corresponding to multiple moments can be obtained through the signal acquisition interface 204 in the aforementioned embodiment. The signal acquisition interface 204 can convert the voltage analog signal measured by the voltage detection module 302 into a digital signal through a built-in analog-to-digital converter so that the processor can process these signals. In addition, during the vehicle collision test, generally under the action of the side airbag, the dummy arm body 100 is lifted and rotated relative to the dummy shoulder joint body 200, and the overlapping position of the resistor lap contact head 201 in the annular resistor slide 102 is constantly changing, so that the voltage divided by the voltage-dividing variable resistor measured by the voltage detection module 302 is also constantly changing. As a result, the first electrical signals obtained at each moment in the collision test process are different, which prepares for the subsequent determination of the rotation angle of the dummy arm body 100 relative to the dummy shoulder joint body 200 at each moment.

[0058] S102, determining the rotation angle of the dummy arm body 100 relative to the dummy shoulder joint body 200 at multiple times based on each of the first electrical signals, and determining a target rotation angle based on the multiple rotation angles;

[0059] Exemplarily, the voltage of the power supply 301 is 5V, the resistance value of the fixed resistor 303 is R, the resistance value of the dummy arm body 100 when the rotation angle relative to the dummy shoulder joint body 200 is 120° is Rx, and R is equal to Rx. When the rotation angle of the dummy arm body 100 relative to the dummy shoulder joint body 200 is 0°, only the fixed resistor 303 value R is in the test circuit, and the voltage division value detected by the voltage detection module 302 is 0V; when the rotation angle of the dummy arm body 100 relative to the dummy shoulder joint body 200 is 120°, the resistance in the test circuit is 2 times R, and the voltage division value detected by the voltage detection module 302 is 2.5V. When the rotation angle of the dummy arm body 100 relative to the dummy shoulder joint body 200 is between 0° and 120°, the calculation can be performed according to the following process.

[0060] Assuming that the rotation angle of the dummy arm body 100 relative to the dummy shoulder joint body 200 is A, the voltage division value detected by the voltage detection module 302 is Ux, and the voltage of the power supply 301 is U, the following calculation formula exists:

[0061] (1) Ux = U*Rx / (R+Rx)

[0062] (2) A = a*Ux

[0063] Therefore, A can be calculated by Ux, where a is a multiple of the voltage divider value and the rotation angle, for example, a=48.

[0064] In addition, it should be noted that, in the case where the side airbag is opened in time during the collision test, the side airbag will lift the dummy arm body 100, and after being lifted to the maximum angle, the rotation angle will fall back to a certain extent due to rebound, that is, the resistance value of the sliding rheostat connected to the test circuit gradually increases during this process, and falls back after reaching the maximum value, thereby generating a peak in the relationship data formed between time and rotation angle. On the contrary, in the case where the side airbag is not opened or is not opened in time during the collision test, the dummy arm body 100 will be lowered under the pressure of the door panel, and will rebound and rise when reaching the minimum, that is, the resistance value of the sliding rheostat connected to the test circuit gradually decreases during this process, and rebounds and rises after reaching the minimum value, thereby generating a trough in the relationship data formed between time and rotation angle.

[0065] This step is mainly to determine the target rotation angle in the rotation angle of the dummy arm body 100 relative to the dummy shoulder joint body 200 corresponding to multiple moments. For the collision test process in which a peak will be generated in the relationship data formed by time and rotation angle, the target rotation angle can be the maximum rotation angle in the collision test process. Further optionally, the target rotation angle can also be the average value of the rotation angles at multiple moments in the time period corresponding to the maximum rotation angle as the target rotation angle, thereby making the target rotation angle reflect the average lifting height of the dummy arm body 100 in the time period after the side airbag is opened, so that the data reliability is higher. For the collision test process in which a trough will be generated in the relationship data formed by time and rotation angle, the target rotation angle can be the minimum rotation angle in the collision test process. Further optionally, the target rotation angle can also be the average value of the rotation angles at multiple moments in the time period corresponding to the minimum rotation angle as the target rotation angle, thereby making the target rotation angle reflect the average lowering height of the dummy arm body 100 in the door panel compression process, so that the data reliability is higher.

[0066] S102A: In response to determining that the target rotation angle is less than or equal to the first preset angle and greater than the second preset angle, it is determined that the chest protection test is passed, that is, it is determined that the side airbag is deployed during the collision test and the dummy arm body 100 is lifted up.

[0067] At the beginning of the collision test, because the dummy's hands will hold the steering wheel, there is an initial angle between the dummy arm body 100 and the dummy shoulder joint body 200 of the collision dummy. Exemplarily, the initial angle is 98°. In this embodiment, the first preset angle is 120°, and the second preset angle is 110°. When the target rotation angle is less than or equal to 120° and greater than 110°, it means that the side airbag is opened in time during the collision test, the dummy's arm is lifted, and the chest protection test passes. If the target rotation angle is greater than 120°, it means that although the side airbag is opened in time, it is opened too early or the degree of opening is too large, so that the rotation angle of the dummy arm body 100 relative to the dummy shoulder joint body 200 is too large, and the dummy is still damaged, then the chest protection test fails, and the vehicle restraint system still needs to be optimized. If the target rotation angle is less than 110°, it cannot be determined whether the angle is formed due to the contact rebound of the dummy arm body 100 at the dummy rib body 400 during the collision, or due to the deployment of the side airbag. It is necessary to obtain the compression test data of the dummy rib body 400 for confirmation.

[0068] S102B, in response to determining that the target rotation angle is less than or equal to a third preset angle, determining that the chest protection test has failed; the third preset angle is less than or equal to the angle between the dummy arm body 100 and the dummy shoulder joint body 200 of the collision dummy at the beginning of the collision test.

[0069] Exemplarily, the third preset angle is 90°. When the target rotation angle is less than or equal to 90°, it means that the side airbag has not been deployed or has not been deployed in time, and it is further determined that the chest protection test has not passed, and the vehicle restraint system still needs to be optimized.

[0070] In this embodiment, the target rotation angle of the dummy arm body 100 relative to the dummy shoulder joint body 200 is determined based on the first electrical signals at multiple moments. When the target rotation angle is less than or equal to the first preset angle and greater than the second preset angle, it means that the rotation angle of the dummy arm body 100 relative to the dummy shoulder joint body 200 is large, then it is determined that the side airbag is opened during the collision test, and the dummy arm body 100 is lifted up, and the chest protection test passes. When the target rotation angle is less than or equal to the third preset angle, it means that the rotation angle of the dummy arm body 100 relative to the dummy shoulder joint body 200 is too small, then it is determined that the chest protection test fails. That is, in this embodiment, the target rotation angle of the dummy arm body 100 relative to the dummy shoulder joint body 200 can be quantified by the first electrical signal, thereby accurately judging the lifting of the dummy arm body 100, and providing a reliable basis for judging whether the dummy chest protection test has passed.

[0071] In some embodiments, the crash dummy chest protection evaluation method further includes:

[0072] In response to determining that the target rotation angle is less than or equal to the second preset angle and greater than the third preset angle, acquiring second electrical signals at multiple moments during the collision test;

[0073] As described in the above embodiment, since the material of the dummy arm body 100 is foam and has deformability, when the target rotation angle is between 90° and 110°, it may be caused by the rebound of the dummy rib body 400 against the dummy arm body 100, and it is impossible to accurately determine whether the dummy rib body 400 is compressed at a specific angle. Therefore, it is necessary to monitor the compression amount of the dummy arm body 100 against the dummy rib body 400 at multiple moments during the collision test to further determine whether the dummy arm body 100 and the dummy rib body 400 are separated to avoid misjudgment.

[0074] In response to determining that the second electrical signals at multiple moments are all less than or equal to a preset compression amount, it is determined that the chest protection test has passed; in response to determining that there is a second electrical signal greater than the preset compression amount among the second electrical signals at multiple moments, it is determined that the chest protection test has not passed.

[0075] Exemplarily, the preset compression amount is 0-5mm. If the compression amounts represented by the second electrical signals at multiple moments are all between 1-3mm, it means that the side airbag is opened during the collision and lifts up the dummy arm body 100, thereby making the compression amount of the dummy rib body 400 within a controllable range, and determining that the side airbag is opened during the collision test and lifts up the dummy arm body 100, and the chest protection test is passed; if the compression amount represented by the second electrical signal is 25mm in the second electrical signals at multiple moments, it means that the side airbag is not opened during the collision, or the side airbag is not opened in time, resulting in a small degree of opening of the airbag between the dummy arm body 100 and the dummy rib body 400, thereby making the compression amount of the dummy arm body 100 on the dummy rib body 400 larger, and causing greater damage to the dummy rib body 400, and determining that the chest protection test has failed.

[0076] In addition, the compression starting time and compression duration of the dummy arm body 100 on the dummy rib body 400 can be determined by monitoring the compression amount (i.e., the second electrical signal) of the dummy arm body 100 on the dummy rib body 400 at multiple moments during the collision test, so as to provide more abundant and necessary data for the subsequent optimization of the vehicle restraint system.

[0077] In this embodiment, when the target rotation angle is less than or equal to the second preset angle and greater than the third preset angle, in order to avoid misjudgment that the rotation angle is caused by the rebound of the dummy rib body 400 on the dummy arm body 100, it is necessary to further obtain a second electrical signal used to represent the compression amount of the dummy arm body 100 on the dummy rib body 400. When the compression amount is less than or equal to the preset compression amount, it means that the compression amount of the dummy arm body 100 on the dummy rib body 400 will not cause damage to the dummy rib body 400, indicating that the side airbag is opened during the collision test, and the dummy arm body 100 is lifted up, and the chest protection test passes; when the compression amount is greater than the preset compression amount, it means that the compression amount of the dummy arm body 100 on the dummy rib body 400 will cause damage to the dummy rib body 400, indicating that the side airbag is not opened or not opened in time during the collision test, and the chest protection test fails. The second electrical signal can quantify the compression amount and compression time of the dummy arm body 100 on the dummy rib body 400, providing a reliable basis for accurately determining whether the dummy chest protection test has passed.

[0078] It should be noted that the method of the embodiment of the present application can be performed by a single device, such as a computer or server. The method of this embodiment can also be applied to a distributed scenario and completed by multiple devices cooperating with each other. In the case of such a distributed scenario, one of the multiple devices can only perform one or more steps in the method of the embodiment of the present application, and the multiple devices will interact with each other to complete the described method.

[0079] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0080] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a chest protection evaluation device for a collision dummy of a hydrogen engine.

[0081] refer to Fig. 9 , the collision dummy chest protection evaluation device comprises:

[0082] An acquisition module 901 is configured to acquire first electrical signals at multiple moments during a collision test;

[0083] A determination module 902 is configured to determine the rotation angle of the dummy arm body relative to the dummy shoulder joint body at multiple moments based on each of the first electrical signals, and determine a target rotation angle based on the multiple rotation angles;

[0084] The first judgment module 903 is configured to determine that the chest protection test passes in response to determining that the target rotation angle is less than or equal to a first preset angle and greater than a second preset angle;

[0085] The second judgment module 904 is configured to determine that the chest protection test fails in response to determining that the target rotation angle is less than or equal to a third preset angle;

[0086] The first preset angle is greater than the second preset angle, and the second preset angle is greater than the third preset angle.

[0087] Furthermore, it also includes:

[0088] The third judgment module 905 is configured to obtain second electrical signals at multiple moments during the collision test in response to determining that the target rotation angle is less than or equal to the second preset angle and greater than the third preset angle;

[0089] The fourth judgment module 906 is configured to determine that the chest protection test has passed in response to determining that the second electrical signals at multiple moments are all less than or equal to the preset compression amount; and determine that the chest protection test has not passed in response to determining that there is a second electrical signal greater than the preset compression amount among the second electrical signals at multiple moments.

[0090] The system of the above embodiment is used to implement the corresponding collision dummy chest protection evaluation method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be described in detail here.

[0091] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments and methods, the present application also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the collision dummy chest protection evaluation method described in any of the above embodiments is implemented.

[0092] Fig.10 A more specific schematic diagram of the hardware structure of an electronic device provided in this embodiment is shown, and the device may include: a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040 are connected to each other through the bus 1050 in the device.

[0093] The processor 1010 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0094] The memory 1020 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 may store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program codes are stored in the memory 1020 and are called and executed by the processor 1010.

[0095] The input / output interface 1030 is used to connect the input / output module to realize information input and output. The input / output module can be configured in the device as a component (not shown in the figure), or it can be externally connected to the device to provide corresponding functions. The input device may include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output device may include a display, a speaker, a vibrator, an indicator light, etc.

[0096] The communication interface 1040 is used to connect a communication module (not shown) to realize communication interaction between the device and other devices. The communication module can realize communication through a wired mode (such as USB, network cable, etc.) or a wireless mode (such as mobile network, WFI, Bluetooth, etc.).

[0097] The bus 1050 includes a path that transmits information between the various components of the device (eg, the processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040).

[0098] It should be noted that, although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040 and the bus 1050, in the specific implementation process, the device may also include other components necessary for normal operation. In addition, it can be understood by those skilled in the art that the above device may also only include the components necessary for implementing the embodiments of the present specification, and does not necessarily include all the components shown in the figure.

[0099] The electronic device of the above embodiment is used to implement the corresponding collision dummy chest protection evaluation method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be described in detail here.

[0100] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present application also provides a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the collision dummy chest protection evaluation method as described in any of the above embodiments.

[0101] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, read-only compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0102] The computer instructions stored in the storage medium of the above embodiment are used to enable the computer to execute the collision dummy chest protection evaluation method as described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0103] It is understandable that before using the technical solutions of each embodiment of the present disclosure, the type, scope of use, usage scenarios, etc. of the personal information involved will be informed to the user in an appropriate manner, and the user's authorization will be obtained.

[0104] For example, in response to receiving an active request from a user, a prompt message is sent to the user to clearly remind the user that the operation requested to be performed will require obtaining and using the user's personal information. Thus, the user can independently choose whether to provide personal information to software or hardware such as an electronic device, application, server, or storage medium that performs the operation of the technical solution of the present disclosure according to the prompt message.

[0105] As an optional but non-limiting implementation, in response to receiving the user's active request, the prompt information may be sent to the user in the form of a pop-up window, in which the prompt information may be presented in text form. In addition, the pop-up window may also carry a selection control for the user to choose "agree" or "disagree" to provide personal information to the electronic device.

[0106] It is understandable that the above notification and the process of obtaining user authorization are merely illustrative and do not constitute a limitation on the implementation of the present disclosure. Other methods that meet relevant laws and regulations may also be applied to the implementation of the present disclosure.

[0107] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0108] In addition, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the known power supply / ground connection with the integrated circuit (IC) chip and other components may or may not be shown in the provided drawings. In addition, the device can be shown in the form of a block diagram to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform to be implemented in the embodiments of the present application (that is, these details should be fully within the scope of understanding of those skilled in the art). In the case of elaborating specific details (e.g., circuits) to describe exemplary embodiments of the present application, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0109] Although the present application has been described in conjunction with specific embodiments of the present application, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0110] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A collision dummy chest protection evaluation device, characterized in that: include: The dummy arm body is provided with a shoulder joint mounting position, and the shoulder joint mounting position is provided with a circumferential resistance slideway; A dummy shoulder joint body is rotatably connected to the dummy arm body, and a resistance contact head is provided on a side close to the shoulder joint installation position. The resistance contact head is located in the annular resistance slideway and can move in the annular resistance slideway as the dummy arm body rotates relative to the dummy shoulder joint body; A power supply is respectively connected to the annular resistance slide and the resistance bonding contact to form a test loop, wherein the test loop is used to output a first electrical signal when the resistance bonding contact moves relative to the annular resistance slide.

2. The evaluation device according to claim 1, characterized in that The annular resistance slide has a first mark position and a second mark position. When the dummy arm body naturally hangs down relative to the dummy shoulder joint body, the resistance contact head contacts the first mark position; when the dummy arm body is lifted up relative to the dummy shoulder joint body and rotated to a preset angle, the resistance contact head slides from the first mark position to contact the second mark position in the annular resistance slide; Wherein, the first flag is connected to the power supply.

3. The evaluation device according to claim 2, characterized in that The test loop includes a voltage detection module, and the voltage detection module is arranged in parallel with the annular resistance slide.

4. The evaluation device according to claim 3, characterized in that The test loop includes a fixed resistor and a switch, and the fixed resistor and the switch are both connected in series with the annular resistor slide.

5. The evaluation device according to claim 4, characterized in that A circuit board is embedded in the dummy shoulder joint body, and the power supply, voltage detection module, fixed resistor and switch are all integrated on the circuit board.

6. The evaluation device according to claim 5, characterized in that The dummy shoulder joint body is provided with a charging interface and a signal acquisition interface, the charging interface is connected to the power supply, and the signal acquisition interface is connected to the voltage detection module.

7. The evaluation device according to claim 1, characterized in that It also includes a dummy rib body, the surface of which is covered with a thin-film pressure sensor, which is used to output a second electrical signal, and the second electrical signal is used to indicate the compression amount of the dummy arm body on the dummy rib body.

8. A method for evaluating chest protection of a collision dummy, characterized in that: Applied to the evaluation device according to any one of claims 1 to 7, the method comprises: Acquire first electrical signals at multiple moments during the collision test; Determine the rotation angle of the dummy arm body relative to the dummy shoulder joint body at multiple times based on each of the first electrical signals, and determine the target rotation angle based on the multiple rotation angles; In response to determining that the target rotation angle is less than or equal to a first preset angle and greater than a second preset angle, determining that the chest protection test passes; In response to determining that the target rotation angle is less than or equal to a third preset angle, determining that the chest protection test fails; The first preset angle is greater than the second preset angle, and the second preset angle is greater than the third preset angle.

9. The evaluation method according to claim 8, characterized in that: Also includes: In response to determining that the target rotation angle is less than or equal to the second preset angle and greater than the third preset angle, acquiring second electrical signals at multiple moments during the collision test; In response to determining that the second electrical signals at multiple moments are all less than or equal to the preset compression amount, determining that the chest protection test is passed; In response to determining that there is a second electrical signal greater than a preset compression amount in the second electrical signals at a plurality of time instants, it is determined that the chest protection test has failed.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that: When the processor executes the program, the method according to any one of claims 8 to 9 is implemented.

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