Multipurpose crash test dummy knee and foot calibration device and method

Abstract

The invention belongs to the technical field of automobiles, and particularly relates to a multipurpose crash test dummy knee and foot calibration device and method. Comprising a base, a stand column device, a calibration table top, a rotating shaft, a foot fixing device, a dummy foot supporting platform, a stand column, a swing arm and a release mechanism. The base is fixed on the ground of a test room, and the upper end is fixedly connected with the stand column device; a rotating shaft is arranged at one end of the calibration table board; the two ends of the rotating shaft are hinged to the upper ends of the stand column devices correspondingly. The lower ends of the foot fixing device, the dummy foot supporting platform and the stand column are all fixed to the calibration table top. And one end of the release mechanism is fixed on the swing arm. According to the invention, the foot, knee and knee slip calibration test of the dummy in the collision test can be completed on one calibration table, the calibration method is simple, the requirements of NHTSA 49CFR PART 572 and ECE R94 on dummy calibration are met, the equipment purchase cost and the test site space are saved, the calibration efficiency is improved, and the calibration method is effectively called as the whole vehicle collision and simulation trolley test.

Description

Technical Field

[0001] The invention belongs to the technical field of automobiles, and in particular relates to a multi-purpose collision test dummy knee and foot calibration device and method. Background Art

[0002] As consumers pay more and more attention to automobile safety and various standards and regulations in the vehicle passive safety industry are updated, automobile manufacturers are investing more and more resources in the development of vehicle passive safety. In the whole vehicle collision test and simulated trolley test, the damage to the head, neck, chest, thigh and calf of the collision test dummy (ATD) is measured, and the high performance index limit and low performance index limit are set, corresponding to the full score and 0 points for each part respectively. The performance index limit of each part represents the degree and risk of injury, so as to evaluate the safety of each model. Therefore, it is necessary to calibrate each part of the collision test dummy to ensure that the injury data of the collision test dummy in the collision test is accurate and reliable. The traditional calibration method selects the corresponding calibration platform for calibration for each part of the collision test dummy. Due to the large number of collision test dummies, it takes a lot of money to purchase calibration platforms. At the same time, arranging multiple calibration platforms takes up too much work space in the calibration laboratory, and the maintenance cost is relatively high. Summary of the invention

[0003] To solve the above problems, the present invention provides a multi-purpose collision test dummy knee and foot calibration device and method, which can complete the calibration test of HⅢ series collision test dummy foot, knee and knee slip on one calibration platform, saving calibration cost and space.

[0004] The technical solution of the present invention is described as follows in conjunction with the accompanying drawings:

[0005] In the first aspect, the present invention provides a multi-purpose collision test dummy knee and foot calibration device, comprising a base 1, a column device 2, a calibration table 3, a rotating shaft 4, a foot fixing device 5, a dummy foot support platform 6, a column 7, a swing arm 8 and a release mechanism 9; the base 4 is fixed on the floor of the test room, and the upper end is fixedly connected to the column device 2; a rotating shaft 4 is provided at one end of the calibration table 3; the two ends of the rotating shaft 4 are respectively hinged to the upper end of the column device 2; the lower ends of the foot fixing device 5, the dummy foot support platform 6 and the column 7 are all fixed on the calibration table 3; one end of the release mechanism 9 is fixed on the swing arm 8.

[0006] Furthermore, there are four bases 1.

[0007] Furthermore, the release mechanism 9 is equipped with different types of impact hammers according to different dummy calibration requirements.

[0008] Furthermore, the front section of the release mechanism 9 is in the shape of a buckle and is installed on the swing arm 8; before the test, the tester manually presses the buckle to release the impact hammer; and adjusts the angle and height of the swing arm 8 to achieve different impact speeds and different positions.

[0009] In a second aspect, the present invention further provides a calibration method for a multi-purpose collision test dummy knee and foot calibration device, comprising the following steps:

[0010] Step 1: Remove the dummy foot and install the dummy foot in the calibration area of ​​the calibration station according to the dummy foot calibration method;

[0011] Step 2: Connect the dummy foot sensor channel to the data acquisition instrument and perform a calibration test. Compare the sensor feedback result with the required range to determine whether the calibration result is qualified. If not, repeat step 1.

[0012] Step 3: Remove the dummy's feet, turn over the calibration table 3 with the rotation axis 4 as the axis, and adjust it to the knee and knee sliding state;

[0013] Step 4: Install the dummy knee on the column 7 of the calibration table according to the dummy knee calibration method;

[0014] Step 5: Connect the dummy knee sensor channel to the data acquisition instrument and perform a calibration test. Compare the sensor feedback result with the required range to determine whether the calibration result is qualified. If not, repeat step 3.

[0015] Step 6: According to the dummy knee slip calibration method, the dummy knee is connected and installed on the calibration table 3 through the column 7;

[0016] Step 7. Connect the dummy knee displacement and thigh force sensor channels to the data acquisition instrument and conduct a calibration test. Compare the sensor feedback results with the required range to determine whether the calibration results are qualified. If not, repeat step 5.

[0017] Furthermore, in the step one, the dummy foot is connected to the mounting plane of the calibration table 3 through the foot fixing device 5, and the test personnel adjusts the release height and the impact position by controlling the release mechanism 9 and the up and down movement of the impact hammer to complete the calibration tests of the dummy foot under different working conditions, including the heel calibration of shoes, the heel calibration of shoes without shoes, and the sole calibration of shoes without shoes.

[0018] Furthermore, in the step 2, a calibration test is performed according to the calibration method required in the dummy user manual.

[0019] Furthermore, in step three, the working state of the calibration table is adjusted by controlling the rotation of the calibration table 3 so that the calibration table 3 has two functions: foot calibration and knee calibration.

[0020] Furthermore, in step three, the calibration table is flipped to 90° with the rotation axis 4 as the axis.

[0021] Furthermore, in step 4, the dummy's knee is connected to the mounting plane of the calibration table 3 by bolts, and the knee posture is adjusted on the mounting plane. The corresponding impact hammer is replaced according to different types of dummies in the HⅢ series to complete the calibration test.

[0022] The beneficial effects of the present invention are:

[0023] 1) The present invention can complete the calibration test of the foot, knee and knee slip of the collision test dummy on one calibration platform, and the calibration method is simple, which meets the requirements of NHTSA 49CFR PART 572 and ECE R94 for dummy calibration, saves equipment procurement costs and test site space, improves calibration efficiency, and effectively performs vehicle collision and simulated trolley tests;

[0024] 2) In the process of dummy calibration, the calibration of the HⅢ series collision test dummies, the foot, knee and knee slip of the Thor dummy requires multiple tests, which takes up a lot of working time. Compared with the traditional dummy calibration platform, the calibration device can realize the calibration of the dummy foot, knee and knee slip, with low test cost and simple test operation;

[0025] 3) The calibration work of the dummy foot of the present invention is only for the HⅢ50th dummy and the Thor dummy. Therefore, if the dummy foot calibration platform is purchased separately, the utilization rate is not high and the laboratory installation space is wasted. The calibration device combines the foot calibration platform with the knee calibration platform, which can meet the calibration requirements of the dummy foot, knee and knee slip, reduces the procurement cost and saves the test space, and greatly shortens the time required for dummy calibration;

[0026] 4) Holes for installing the feet and knees of the dummy are reserved on the installation table of the calibration device of the present invention, which can meet the requirements for fixing and installing the knees and feet of the dummy;

[0027] 5) The mounting surface of the calibration device of the present invention has space for mounting the feet and knees of the dummy;

[0028] 6) The height of the impact hammer of the present invention can be reflected in real time on the digital display screen through laser ranging, and the height of the impact hammer can be adjusted in real time according to the test speed requirements;

[0029] 7) When releasing the pendulum, the test personnel need to stand outside the equipment fence to prevent being hit and improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 This is a schematic diagram of the installation method for dummy foot calibration;

[0032] Figure 2 This is a schematic diagram of the dummy knee calibration installation method;

[0033] Figure 3 Schematic diagram of the collision test dummy calibration device.

[0034] In the figure:

[0035] 1. Base; 2. Column device; 3. Calibration table; 4. Rotation axis; 5. Foot fixing device; 6. Dummy foot support platform; 7. Column; 8. Swing arm; 9. Release mechanism. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0042] Embodiment 1

[0043] See also Figure 3 The present embodiment provides a multi-purpose collision test dummy knee and foot calibration device, including a base 1, a column device 2, a calibration table 3, a rotating shaft 4, a foot fixing device 5, a dummy foot support platform 6, a column 7, a swing arm 8 and a release mechanism 9.

[0044] The structure of the collision test dummy calibration device is as follows: Figure 3 As shown, four bases 1 are connected to the main body of the calibration platform by bolts, and the main body of the calibration platform is fixed to the floor of the laboratory by the four bases 1. The column device 2 is connected to the four bases 1 to form a support mechanism of the calibration platform. The rotating shaft 4 is fixed to the column device 2, and the rotation of the rotating shaft 4 can drive the movement of the calibration table 3, thereby realizing the transformation of the calibration table 3 from the foot calibration state to the knee calibration state.

[0045] When performing foot timing, rotate the rotating shaft 4, adjust the calibration table 3 to the foot calibration state, install the column foot fixture 5 at the corresponding position on the calibration table 3 according to the HⅢ50th male dummy lower limb size, fix the dummy thigh force sensor mounting hole to the foot fixture 5 through bolt connection, and place the dummy foot on the column 7. On the release mechanism 9 as required. According to different dummy calibration requirements, different types of pendulums are installed, and the front section of the release mechanism 9 is buckle-shaped and installed on the swing arm 8. Before the test, the tester manually presses the buckle to release the impact hammer. By adjusting the angle and height of the swing arm, different speeds and different positions of impact can be achieved.

[0046] When performing knee and knee slip calibration, the rotating shaft 4 is rotated, the calibration table 3 is adjusted to the knee calibration state, and the dummy thigh force sensor is fixed on the knee fixing device 5, thereby achieving the calibration of the dummy knee and knee slip.

[0047] Embodiment 2

[0048] See also Figure 1-Figure 3 This embodiment provides a calibration method for a multi-purpose collision test dummy knee and foot calibration device, comprising the following steps:

[0049] Step 1: Remove the dummy foot and install the dummy foot in the calibration area of ​​the calibration station according to the dummy foot calibration method;

[0050] The dummy foot is connected to the mounting plane of the calibration table 3 through the foot fixing device 5. The test personnel adjusts the release height and the impact position by manipulating the release mechanism 9 (the release mechanism is a snap-on type, which can hook the impact hammer under normal conditions and be released manually by the test personnel) and the up and down movement of the impact hammer to complete the calibration tests of the dummy foot under different working conditions, including the heel calibration with shoes, the heel calibration without shoes, and the sole calibration without shoes.

[0051] Step 2: Connect the dummy foot sensor channel to the data acquisition instrument and calibrate according to the dummy user manual (such as Figure 1 Perform a calibration test on the sensor (as shown in the figure), compare the sensor feedback result with the range required in the user manual to determine whether the calibration result is qualified. If not, repeat step 1.

[0052] Step 3: Remove the dummy's feet, turn the calibration table to 90° with the rotation axis 4 as the axis, and adjust the calibration table to the knee and knee sliding state;

[0053] By controlling the rotation of the calibration table 3 and adjusting the working state of the calibration table, the calibration table 3 has two functions: foot calibration and knee calibration.

[0054] Step 4: According to the dummy knee calibration method, install the dummy knee on the column 7 of the calibration table, such as Figure 2 As shown;

[0055] The dummy's knee is connected to the mounting plane of the calibration table 3 by bolts, and the knee posture is adjusted on the mounting plane. The corresponding impact hammer is replaced according to different types of dummies in the HⅢ series to complete the calibration test.

[0056] Step 5: Connect the dummy knee sensor channel to the data acquisition instrument and calibrate according to the dummy user manual (such as Figure 2 Perform a calibration test (as shown), compare the sensor feedback result with the range required in the user manual to determine whether the calibration result is qualified. If not, repeat step three.

[0057] Step 6: According to the dummy knee slip calibration method, connect the dummy knee through the column 7 and install it on the calibration table 3.

[0058] Step 7. Connect the dummy's knee displacement and thigh force sensor channels to the data acquisition instrument, and perform a calibration test according to the calibration method required in the dummy's user manual. Compare the sensor feedback results with the range required in the user manual to determine whether the calibration results are qualified. If not, repeat step 5.

[0059] In summary, the present invention can complete the calibration tests of the foot, knee and knee slip of the HⅢ series collision test dummy on one calibration platform, saving calibration cost and space.

[0060] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the protection scope of the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention. These simple variations all belong to the protection scope of the present invention.

[0061] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0062] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A multi-purpose collision test dummy knee and foot calibration device, characterized in that: The invention comprises a base (1), a column device (2), a calibration table (3), a rotating shaft (4), a foot fixing device (5), a dummy foot support platform (6), a column (7), a swing arm (8) and a release mechanism (9); the base (4) is fixed on the floor of the test room, and the upper end is fixedly connected to the column device (2); one end of the calibration table (3) is provided with a rotating shaft (4); the two ends of the rotating shaft (4) are respectively hinged to the upper end of the column device (2); the lower ends of the foot fixing device (5), the dummy foot support platform (6) and the column (7) are all fixed on the calibration table (3); one end of the release mechanism (9) is fixed on the swing arm (8).

2. A multi-purpose collision test dummy knee and foot calibration device according to claim 1, characterized in that: There are four bases (1).

3. The multi-purpose collision test dummy knee and foot calibration device according to claim 1, characterized in that: The release mechanism (9) is equipped with different types of impact hammers according to different dummy calibration requirements.

4. The multi-purpose collision test dummy knee and foot calibration device according to claim 1, characterized in that: The front section of the release mechanism (9) is in the shape of a buckle and is mounted on the swing arm (8); before the test, the tester manually presses the buckle to release the impact hammer; the angle and height of the swing arm (8) are adjusted to achieve different impact speeds and different positions.

5. A calibration method for a multi-purpose collision test dummy knee and foot calibration device according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: Remove the dummy foot and install the dummy foot in the calibration area of ​​the calibration station according to the dummy foot calibration method; Step 2: Connect the dummy foot sensor channel to the data acquisition instrument and perform a calibration test. Compare the sensor feedback result with the required range to determine whether the calibration result is qualified. If not, repeat step 1. Step 3: Remove the dummy's feet, turn over the calibration table (3) with the rotation axis (4) as the axis, and adjust it to the knee and knee sliding state; Step 4: Install the dummy knee on the column (7) of the calibration table according to the dummy knee calibration method; Step 5: Connect the dummy knee sensor channel to the data acquisition instrument and perform a calibration test. Compare the sensor feedback result with the required range to determine whether the calibration result is qualified. If not, repeat step 3. Step 6: According to the dummy knee slip calibration method, the dummy knee is connected and installed on the calibration table (3) through the column 7; Step 7. Connect the dummy knee displacement and thigh force sensor channels to the data acquisition instrument and conduct a calibration test. Compare the sensor feedback results with the required range to determine whether the calibration results are qualified. If not, repeat step 5.

6. A multi-purpose collision test dummy knee and foot calibration method according to claim 5, characterized in that: In the step 1, the dummy foot is connected to the mounting plane of the calibration table (3) via the foot fixing device (5), and the test personnel adjust the release height and the impact position by controlling the release mechanism (9) and the impact hammer to move up and down, thereby completing the calibration tests of the dummy foot under different working conditions, including the calibration of the heel with shoes, the calibration of the heel without shoes, and the calibration of the sole without shoes.

7. The method for calibrating the knee and foot of a multi-purpose collision test dummy according to claim 5, characterized in that: The second step is to perform a calibration test according to the calibration method required in the dummy user manual.

8. The method for calibrating the knee and foot of a multi-purpose collision test dummy according to claim 5, characterized in that: In the step three, the working state of the calibration table (3) is adjusted by controlling the rotation of the calibration table (3), so that the calibration table (3) has two functions: foot calibration and knee calibration.

9. The method for calibrating the knee and foot of a multi-purpose collision test dummy according to claim 5, characterized in that: The step three is to flip the calibration table to 90 degrees with the rotation axis (4) as the axis.

10. The multi-purpose collision test dummy knee and foot calibration method according to claim 5, characterized in that: In the fourth step, the knee of the dummy is connected to the mounting plane of the calibration table (3) by bolts, and the posture of the knee is adjusted on the mounting plane. The corresponding impact hammer is replaced according to different types of dummies in the HⅢ series to complete the calibration test.

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