Lumbar vertebra six-dimensional force sensor and dummy

Abstract

The embodiment of the utility model discloses a lumbar vertebra six-dimensional force sensor and a dummy. The lumbar vertebra six-dimensional force sensor comprises a sensor body, a first connecting end, a second connecting end and a protective shell. In the actual use process, the lumbar vertebra six-dimensional force sensor is connected to the dummy through the first connecting end and the second connecting end, meanwhile, a lumbar vertebra model of the dummy is directly connected with the sensor body, and when the dummy is impacted, force borne by the lumbar vertebra of the dummy is transmitted to the sensor body; the sensor body monitors the force borne by the dummy lumbar vertebra on the X axis, the Y axis and the Z axis and the torque around the axis, a tester can confirm the impact force caused by the simulation experiment to the dummy lumbar vertebra according to the numerical value monitored by the sensor body, the technical scheme realizes real-time monitoring of the force borne by the dummy lumbar vertebra, and in application scenes of accident simulation and the like, the test efficiency is improved. The data accuracy and the experiment reliability are improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of test equipment, and in particular to a lumbar six-dimensional force sensor and a dummy. Background Art

[0002] Safety test dummies are usually used in fields such as automobile safety testing and aviation life-saving technology. They simulate the state of the human body during and after an accident.

[0003] In existing safety tests, the damage caused to the dummy by the accident is usually judged only based on the state of the dummy after the simulated accident, or a pressure sensor is set on the surface of the dummy and the impact force of the accident on the dummy is judged based on the reading of the pressure sensor. However, the human body is more complex than the dummy in structure, and the degree of injury cannot be judged based only on the impact force on the surface, and it is currently impossible to judge the impact force inside the dummy. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0005] To this end, a first aspect of the utility model provides a lumbar vertebrae six-dimensional force sensor.

[0006] A second aspect of the utility model provides a dummy.

[0007] In view of this, according to a first aspect of an embodiment of the present application, a lumbar vertebrae six-dimensional force sensor is proposed, comprising:

[0008] A sensor body, wherein the sensor body is used to detect the force exerted on the lumbar vertebrae six-dimensional force sensor;

[0009] A first connection end, the first connection end is arranged at the top end of the sensor body, and the first connection end is used to connect to an external component;

[0010] A second connection end, the second connection end is arranged at the lower end of the sensor body, and the second connection end is used to connect to an external component;

[0011] A protective shell is arranged on a side surface of the sensor body.

[0012] In a feasible implementation manner, the sensor body includes:

[0013] an upper end plate connected to the first connection end;

[0014] a lower end plate connected to the second connecting end;

[0015] A strain beam, wherein a sensitive element is arranged inside the strain beam, and a plurality of strain beams are arranged, and two ends of the strain beam are respectively connected to an upper end plate and a lower end plate;

[0016] An amplifying element is electrically connected to the sensitive element in the strain beam.

[0017] In a feasible implementation manner, the sensor body further includes:

[0018] A wireless signal transmitter is electrically connected to the amplifying element.

[0019] In a feasible implementation manner, the sensor body further includes:

[0020] a first mounting hole, the first mounting hole being opened in the upper end plate, and the upper end plate being connected to the first connecting end through the first mounting hole;

[0021] A lumbar vertebra positioning hole is provided on a side of the upper end plate away from the strain beam.

[0022] In a feasible implementation manner, the sensor body further includes:

[0023] A side wire outlet hole, wherein the side wire outlet hole is opened on the lower end plate, one end of the side wire outlet hole is opened on a side of the lower end plate close to the strain beam, and the other end of the side wire outlet hole is opened on a side surface of the lower end plate;

[0024] A housing mounting hole, the housing mounting hole being opened on the lower end plate, and the protective housing being connected to the sensor body through the housing mounting hole;

[0025] A second mounting hole is provided in the lower end plate, and the lower end plate is connected to the second connecting end through the second mounting hole.

[0026] In a feasible implementation manner, the first connection end includes:

[0027] A first fixing plate, the first fixing plate being fixedly connected to the upper end plate;

[0028] a first positioning hole, the first positioning hole being opened in the first fixing plate and corresponding to the lumbar positioning hole;

[0029] a third mounting hole, the third mounting hole being opened on the first fixing plate and corresponding to the first mounting hole;

[0030] The first sliding fixing member is arranged on the first fixing plate, and the first sliding fixing member is arranged on a side of the first fixing plate away from the sensor body.

[0031] In a feasible implementation manner, the second connection end includes:

[0032] a second fixing plate, the second fixing plate being fixedly connected to the lower end plate;

[0033] a fourth mounting hole, the fourth mounting hole being disposed adjacent to the second fixing plate and corresponding to the second mounting hole;

[0034] The second sliding fixing member is arranged on the second fixing plate, and the second sliding fixing member is arranged on a side of the second fixing plate away from the sensor body.

[0035] In a feasible implementation manner, the first sliding fixing member includes:

[0036] A fixed end, the fixed end being fixedly connected to an external component;

[0037] The sliding end is fixedly connected to the first fixing plate, and the sliding end is slidably connected to the fixing end.

[0038] In a feasible implementation manner, the first sliding fixing member further includes:

[0039] A locking piece, wherein the locking piece can convert the sliding connection between the fixed end and the sliding end into a fixed connection.

[0040] According to a second aspect of an embodiment of the present application, a dummy is provided, comprising:

[0041] The lumbar six-dimensional force sensor as described in any one of the above items;

[0042] A test dummy upper body, wherein the test dummy upper body is connected to the first connection end;

[0043] A test dummy lower body, wherein the test dummy lower body is connected to the second connection end.

[0044] Compared with the prior art, the utility model at least includes the following beneficial effects: the six-dimensional force sensor for the lumbar spine provided in the embodiment of the present application includes a sensor body, a first connection end, a second connection end and a protective shell. Among them, the sensor body is a six-dimensional force sensor, which can accurately measure the forces applied to the sensor in different directions, including the forces along the X, Y and Z axes, and the moments around these axes. In actual use, the six-dimensional force sensor for the lumbar spine is connected to the dummy through the first connection end and the second connection end. At the same time, the lumbar spine model of the dummy is directly connected to the sensor body. When the dummy is impacted, the force on the lumbar spine of the dummy is transmitted to the sensor body. The sensor body monitors the forces on the lumbar spine of the dummy on the X, Y, and Z axes and the moments around these axes. The test personnel can confirm the impact force caused by the simulation experiment on the lumbar spine of the dummy based on the values ​​monitored by the sensor body. The lumbar spine is an important load-bearing organ and spinal cord protection organ of the human body and should be monitored in safety simulation tests. This technical solution realizes real-time monitoring of the force applied to the dummy's lumbar spine, improving the accuracy of data and the reliability of experiments in application scenarios such as accident simulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0046] Figure 1 A structural block diagram of a lumbar six-dimensional force sensor provided in this application;

[0047] Figure 2 A structural block diagram of a lumbar six-dimensional force sensor provided in this application;

[0048] Figure 3 This is a structural block diagram of a lumbar six-dimensional force sensor provided in this application.

[0049] in, Figure 1-3 The corresponding relationship between the reference numerals and the component names is as follows:

[0050] 100, sensor body; 200, protective housing;

[0051] 110, upper end plate; 120, lower end plate; 130, strain beam; 140, first mounting hole; 150, lumbar vertebra positioning hole; 160, side outlet hole; 170, housing mounting hole; 180, second mounting hole. DETAILED DESCRIPTION

[0052] In order to better understand the above-mentioned technical scheme, the technical scheme of the embodiments of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical scheme of the embodiments of the present application, rather than limitations on the technical scheme of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments may be combined with each other.

[0053] like Figure 1-3 As shown, according to the first aspect of an embodiment of the present application, a lumbar spine six-axis force sensor is proposed, including: a sensor body 100, the sensor body 100 is used to detect the force applied to the lumbar spine six-axis force sensor; a first connecting end, the first connecting end is arranged at the top end of the sensor body 100, and the first connecting end is used to connect to an external component; a second connecting end, the second connecting end is arranged at the lower end of the sensor body 100, and the second connecting end is used to connect to an external component; a protective shell 200, the protective shell 200 is arranged on the side surface of the sensor body 100.

[0054] The lumbar six-dimensional force sensor provided in the embodiment of the present application includes a sensor body 100 , a first connection end, a second connection end and a protective shell 200 .

[0055] The sensor body 100 is a six-dimensional force sensor, which can accurately measure the forces applied to the sensor in different directions, including the forces along the X, Y and Z axes, and the moments around these axes.

[0056] The first connection end is disposed at the upper end of the sensor body 100 , and the sensor body 100 is connected to the upper body of the dummy through the first connection end.

[0057] The second connection end is disposed at the lower end of the sensor body 100 , and the sensor body 100 is connected to the lower body of the dummy through the second connection end.

[0058] In actual use, the lumbar six-dimensional force sensor is connected to the dummy through the first connection end and the second connection end. At the same time, the lumbar model of the dummy is directly connected to the sensor body 100. When the dummy is impacted, the force on the dummy's lumbar spine is transmitted to the sensor body 100. The sensor body 100 monitors the force on the dummy's lumbar spine on the X, Y, and Z axes and the torque around these axes. The tester can confirm the impact force caused by the simulation experiment on the dummy's lumbar spine based on the values ​​monitored by the sensor body 100. The lumbar spine is an important load-bearing organ and spinal cord protection organ of the human body, and it should be monitored in safety simulation tests. This technical solution realizes real-time monitoring of the force on the dummy's lumbar spine, improving the accuracy of data and the reliability of experiments in application scenarios such as accident simulation.

[0059] like Figure 1-3 As shown, the sensor body 100 includes: an upper end plate 110, the upper end plate 110 is connected to the first connection end; a lower end plate 120, the lower end plate 120 is connected to the second connection end; a strain beam 130, a sensitive element is provided inside the strain beam 130, and the strain beam 130 is provided with a plurality of strain beams, and the two ends of the strain beam 130 are respectively connected to the upper end plate 110 and the lower end plate 120; an amplifying element, the amplifying element is electrically connected to the sensitive element in the strain beam 130.

[0060] In this technical solution, a sensitive element is provided inside the strain beam 130. When the strain beam 130 is deformed, the resistance of the sensitive element inside the strain beam 130 changes, thereby changing the electrical signal inside the sensor body 100. In actual use, when the dummy's lumbar vertebra is subjected to force, the strain beam 130 is deformed by compression or stretching. At this time, the resistance of the sensitive element inside the strain beam changes. The deformation of the strain can be judged based on the change in resistance, thereby judging the pressure on the dummy's lumbar vertebra.

[0061] Among them, the change in resistance of the sensitive element is small, and the change in the electrical signal needs to be amplified by an amplifying element. This technical solution makes the monitoring of the stress condition of the dummy's lumbar spine clearer and more accurate.

[0062] like Figure 1-3 As shown, the sensor body 100 further includes: a wireless signal transmitter, and the wireless signal transmitter is electrically connected to the amplifying element.

[0063] In this technical solution, the sensor body 100 also includes a wireless signal transmitter. Since the safety test link usually does not have the conditions for limited connection to the dummy, a wireless signal transmitter is added. The wireless signal transmitter is electrically connected to the amplifying element, and the electrical signal amplified by the amplifying element is wirelessly transmitted to the external processing terminal.

[0064] like Figure 1-3 As shown, the sensor body 100 also includes: a first mounting hole 140, which is opened on the upper end plate 110, and the upper end plate 110 is connected to the first connecting end through the first mounting hole 140; and a lumbar positioning hole 150, which is opened on the side of the upper end plate 110 away from the strain beam 130.

[0065] In this technical solution, a first mounting hole 140 and a lumbar vertebra positioning hole 150 are provided on the upper end plate 110, wherein the lumbar vertebra positioning hole 150 is provided on the side of the upper end plate 110 away from the strain beam 130. When the six-dimensional force sensor is connected to the dummy, the dummy's lumbar vertebra model can be inserted into the lumbar vertebra positioning hole 150 and positioned.

[0066] like Figure 1-3As shown, the sensor body 100 also includes: a side wire outlet hole 160, which is opened on the lower end plate 120, one end of the side wire outlet hole 160 is opened on the side of the lower end plate 120 close to the strain beam 130, and the other end of the side wire outlet hole 160 is opened on the side surface of the lower end plate 120; a shell mounting hole 170, which is opened on the lower end plate 120, and the protective shell 200 is connected to the sensor body 100 through the shell mounting hole 170; a second mounting hole 180, which is opened on the lower end plate 120, and the lower end plate 120 is connected to the second connecting end through the second mounting hole 180.

[0067] In this technical solution, the sensor body 100 includes a side wire outlet hole 160, a shell mounting hole 170 and a second mounting hole 180, wherein the side wire outlet hole 160 is connected from the side of the lower end plate 120. Compared with the straight hole outlet, the side outlet can leave space for the installation of the second connection end.

[0068] like Figure 1-3 As shown, the first connecting end includes: a first fixing plate, which is fixedly connected to the upper end plate 110; a first positioning hole, which is opened in the first fixing plate and corresponds to the lumbar positioning hole 150; a third mounting hole, which is opened in the first fixing plate and corresponds to the first mounting hole 140; and a first sliding fixing member, which is arranged on the first fixing plate and is arranged on the side of the first fixing plate away from the sensor body 100.

[0069] In this technical solution, the first connecting end includes a first fixing plate, a first positioning hole and a third mounting hole, wherein the third mounting hole corresponds to the first mounting hole 140. When connecting, the third mounting hole can overlap with the first mounting hole 140, and the first connecting end is connected to the upper end surface by bolts or the like.

[0070] The first positioning hole corresponds to the lumbar vertebra fixing hole, so that the lumbar vertebra of the dummy model can extend into the lumbar vertebra fixing hole.

[0071] like Figure 1-3 As shown, the second connecting end includes: a second fixing plate, the second fixing plate is fixedly connected to the lower end plate 120; a fourth mounting hole, the fourth mounting hole is arranged on the second fixing plate and corresponds to the second mounting hole 180; a second sliding fixing member, the second sliding fixing member is arranged on the second fixing plate, and the second sliding fixing member is arranged on the side of the second fixing plate away from the sensor body 100.

[0072] like Figure 1-3As shown, the first sliding fixing member includes: a fixed end, which is fixedly connected to the external component; a sliding end, which is fixedly connected to the first fixing plate, and the sliding end is slidably connected to the fixed end.

[0073] In this technical solution, the first sliding fixing member includes a fixed end and a sliding end, and the fixed end is fixed to an external component. In this embodiment, the external component is a dummy. During actual use, a sliding connection between the six-dimensional force sensor and the dummy can be realized. Since the dummy often suffers collision damage during the test process, this connection method can increase the efficiency of disassembly and installation between the six-dimensional force sensor and the dummy.

[0074] like Figure 1-3 As shown, the first sliding fixing member further includes: a locking member, which can transform the sliding connection between the fixing end and the sliding end into a fixed connection.

[0075] In this technical solution, the first sliding fixing member also includes a locking member. When the six-dimensional force sensor needs to be fixedly connected to the dummy, the locking member is locked. When the six-dimensional force sensor and the dummy need to be disassembled, the locking member can be opened.

[0076] like Figure 1-3 As shown, according to the second aspect of an embodiment of the present application, a dummy is proposed, comprising: a lumbar six-dimensional force sensor as described in any one of the above items; a test dummy upper body, the test dummy upper body connected to the first connection end; a test dummy lower body, the test dummy lower body connected to the second connection end.

[0077] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0078] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0079] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0080] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lumbar vertebrae six-dimensional force sensor, characterized in that: include: A sensor body, wherein the sensor body is used to detect the force exerted on the lumbar vertebrae six-dimensional force sensor; A first connection end, the first connection end is arranged at the top end of the sensor body, and the first connection end is used to connect to an external component; A second connection end, the second connection end is arranged at the lower end of the sensor body, and the second connection end is used to connect to an external component; A protective shell is arranged on a side surface of the sensor body.

2. The lumbar vertebrae six-dimensional force sensor according to claim 1, characterized in that: The sensor body comprises: an upper end plate connected to the first connection end; a lower end plate connected to the second connecting end; A strain beam, wherein a sensitive element is arranged inside the strain beam, and a plurality of strain beams are arranged, and two ends of the strain beam are respectively connected to an upper end plate and a lower end plate; An amplifying element is electrically connected to the sensitive element in the strain beam.

3. The lumbar vertebrae six-dimensional force sensor according to claim 2, characterized in that: The sensor body also includes: A wireless signal transmitter is electrically connected to the amplifying element.

4. The lumbar vertebrae six-dimensional force sensor according to claim 2, characterized in that: The sensor body also includes: a first mounting hole, the first mounting hole being opened in the upper end plate, and the upper end plate being connected to the first connecting end through the first mounting hole; A lumbar vertebra positioning hole is provided on a side of the upper end plate away from the strain beam.

5. The lumbar vertebrae six-dimensional force sensor according to claim 2, characterized in that: The sensor body also includes: A side wire outlet hole, wherein the side wire outlet hole is opened on the lower end plate, one end of the side wire outlet hole is opened on a side of the lower end plate close to the strain beam, and the other end of the side wire outlet hole is opened on a side surface of the lower end plate; A housing mounting hole, the housing mounting hole being opened on the lower end plate, and the protective housing being connected to the sensor body through the housing mounting hole; A second mounting hole is provided in the lower end plate, and the lower end plate is connected to the second connecting end through the second mounting hole.

6. The lumbar vertebrae six-dimensional force sensor according to claim 4, characterized in that: The first connection end comprises: A first fixing plate, the first fixing plate being fixedly connected to the upper end plate; a first positioning hole, the first positioning hole being opened in the first fixing plate and corresponding to the lumbar positioning hole; a third mounting hole, the third mounting hole being opened on the first fixing plate and corresponding to the first mounting hole; The first sliding fixing member is arranged on the first fixing plate, and the first sliding fixing member is arranged on a side of the first fixing plate away from the sensor body.

7. The lumbar vertebrae six-dimensional force sensor according to claim 5, characterized in that: The second connection end comprises: a second fixing plate, the second fixing plate being fixedly connected to the lower end plate; a fourth mounting hole, the fourth mounting hole being disposed adjacent to the second fixing plate and corresponding to the second mounting hole; The second sliding fixing member is arranged on the second fixing plate, and the second sliding fixing member is arranged on a side of the second fixing plate away from the sensor body.

8. The lumbar vertebrae six-dimensional force sensor according to claim 6, characterized in that: The first sliding fixing member comprises: A fixed end, the fixed end being fixedly connected to an external component; The sliding end is fixedly connected to the first fixing plate, and the sliding end is slidably connected to the fixing end.

9. The lumbar vertebrae six-dimensional force sensor according to claim 8, characterized in that: The first sliding fixing member also includes: A locking piece, wherein the locking piece can convert the sliding connection between the fixed end and the sliding end into a fixed connection.

10. A dummy, characterized in that: include: The lumbar vertebrae six-dimensional force sensor according to any one of claims 1 to 9; A test dummy upper body, the test dummy upper body connected to the first connection end; A test dummy lower body, wherein the test dummy lower body is connected to the second connection end.

Images