Acceleration sensor measurement auxiliary device

Abstract

According to the acceleration sensor measurement auxiliary device, driving force is provided for the knocking rod by rotating the rotating assembly, the knocking rod rotates, the tuning fork is knocked, the tuning fork vibrates, the acceleration sensor to be detected detects vibration of the tuning fork, the sensor converts the vibration into an electric signal, and the electric signal is collected and analyzed by the testing equipment and compared with a standard signal. And judging whether the sensor performance is qualified.

Description

Technical Field

[0001] This application relates to the field of acceleration sensor measurement technology, and in particular to an acceleration sensor measurement auxiliary device. Background Technology

[0002] An accelerometer is a sensor that measures acceleration. It typically consists of a mass, a damper, an elastic element, a sensing element, and adaptive circuitry. During acceleration, the sensor measures the inertial force acting on the mass and uses Newton's second law to obtain the acceleration value. Depending on the sensing element, common accelerometers include capacitive, inductive, strain gauge, piezoresistive, and piezoelectric types.

[0003] Because current accelerometers are reused in field applications, they may become damaged after a period of use. However, it is not known whether the sensor is damaged during deployment. It is very time-consuming to replace the sensor when abnormal data is found during subsequent testing. Utility Model Content

[0004] The technical problem this application aims to solve is that current accelerometers are reused in field applications, so they may become damaged after a period of use. However, it is not known whether the sensor is damaged during the deployment process. It is very time-consuming to replace the sensor when abnormal data is found after testing begins.

[0005] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this application provides an acceleration sensor measurement auxiliary device.

[0006] This utility model discloses an acceleration sensor measurement auxiliary device, which includes a tuning fork, a striking rod and a rotating assembly. The rotating assembly is connected to the striking rod, and the acceleration sensor to be tested is installed on the tuning fork.

[0007] The rotating assembly provides driving force to the striking rod, which strikes the tuning fork, and the accelerometer detects the vibration of the tuning fork.

[0008] Preferably, the assembly includes a housing, and the tuning fork, the striking bar, and the rotating assembly are disposed within the housing, with the tuning fork and the striking bar mounted on one side surface of the housing.

[0009] Preferably, the rotating assembly includes a support rod, a mounting component, and a bearing. The bearing and the mounting component are respectively disposed at both ends of the support rod. The support rod is fixedly connected to the mounting component. The support rod is connected to the inner ring of the bearing. The striking rod is connected to the mounting component.

[0010] Preferably, the rotating assembly includes a handwheel, which is fixedly connected to the support rod and is located at one end of the support rod connected to the bearing.

[0011] Preferably, the striking rod includes a striking head and a rod body, with the striking head disposed at one end of the rod body.

[0012] Preferably, the rotating assembly includes an elastic element (ensuring the elastic coefficient to prevent secondary impact from rebound), one end of the elastic element is disposed at the end of the rod away from the striking head; the other end of the elastic element.

[0013] Preferably, the outer casing includes a scale with equally spaced graduations.

[0014] Preferably, the system includes a fixed base, which is fixedly connected to the housing, the bearing is mounted on the fixed base, and the support rod passes through the fixed base.

[0015] Preferably, the housing is provided with feet.

[0016] Preferably, the outer casing is provided with a sliding door.

[0017] The technical solution provided in this application has the following advantages compared with the prior art:

[0018] This application provides an accelerometer measurement auxiliary device, which provides driving force to a striking rod by rotating a rotating component, causing the striking rod to rotate and strike a tuning fork. The tuning fork vibrates, and the accelerometer under test detects the vibration of the tuning fork. The sensor converts the vibration into an electrical signal, which is collected and analyzed by the testing equipment and compared with a standard signal to determine whether the sensor performance is qualified. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the structure of an acceleration sensor measurement auxiliary device provided in this application. Figure 1 ;

[0022] Figure 2A schematic diagram of the structure of an acceleration sensor measurement auxiliary device provided in this application. Figure 2 ;

[0023] Figure 3 A schematic diagram of the structure of an acceleration sensor measurement auxiliary device provided in this application. Figure 3 ;

[0024] Figure 4 A schematic diagram of the structure of an acceleration sensor measurement auxiliary device provided in this application. Figure 4 ;

[0025] Figure 5 A schematic diagram of the open sliding door state of an acceleration sensor measurement auxiliary device provided in this application;

[0026] Figure 6 A schematic diagram of the structure of an acceleration sensor measurement auxiliary device provided in this application. Figure 5 ;

[0027] Figure 7 A schematic diagram of the connection structure of the striking rod, rotating assembly and tuning fork of an acceleration sensor measurement auxiliary device provided in this application;

[0028] Figure 8 This is an exploded structural diagram of the striking rod, rotating assembly, and tuning fork of an acceleration sensor measurement auxiliary device provided in this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Accelerometer measurement auxiliary device; 2. Accelerometer sensor to be tested;

[0031] 11. Striking rod; 111. Striking head; 112. Rod body;

[0032] 12. Rotating assembly; 121. Support rod; 122. Mounting component; 123. Bearing; 124. Handwheel; 125. Elastic element;

[0033] 13. Tuning fork;

[0034] 14. Outer casing; 141. Ruler; 142. Feet; 143. Sliding door;

[0035] 15. Fixed base. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] See Figure 1-8 This utility model discloses an acceleration sensor measurement auxiliary device 1, which includes a housing 14, a tuning fork 13, a striking rod 11, and a rotating assembly 12. The rotating assembly 12 is connected to the striking rod 11. The acceleration sensor 2 to be detected is mounted on the tuning fork 13. The tuning fork 13, the striking rod 11, and the rotating assembly 12 are disposed inside the housing 14. The tuning fork 13 and the striking rod 11 are mounted on one side surface of the housing 14. The rotating assembly 12 provides driving force to the striking rod 11. The striking rod 11 strikes the tuning fork 13. The acceleration sensor 2 to be detected detects the vibration of the tuning fork 13.

[0038] Specifically, a cavity is provided inside the outer casing 14. The tuning fork 13, striking rod 11, and rotating assembly 12 are located on the top of this cavity. Additionally, the outer casing 14 has a sliding door 143 with an opening corresponding to the location of the sliding door 143. The sliding door 143 slides through the opening, thus blocking it. The striking rod 11 is positioned near the tuning fork 13. The rotating assembly 12 drives the striking rod 11 to rotate, thereby striking the tuning fork 13. By rotating the rotating assembly 12, a driving force is provided to the striking rod 11, causing it to rotate and strike the tuning fork 13. The tuning fork 13 vibrates. The accelerometer 2 detects the vibration of the tuning fork 13 and converts it into an electrical signal. This signal is collected and analyzed by the testing equipment and compared with a standard signal to determine whether the sensor performance is up to standard.

[0039] The rotating assembly 12 includes a fixed base 15, a handwheel 124, a support rod 121, a mounting component 122, an elastic element 125, and a bearing 123. The bearing 123 and the mounting component 122 are respectively disposed at both ends of the support rod 121. The support rod 121 is fixedly connected to the mounting component 122. The support rod 121 is connected to the inner ring of the bearing 123. The striking rod 11 is connected to the mounting component 122. The handwheel 124 is fixedly connected to the support rod 121 and is disposed at one end of the support rod 121 connected to the bearing 123. One end of the elastic element 125 is disposed at the end of the rod body 112 away from the striking head 111. The other end of the elastic element 125 is disposed at the fixed base 15, which is fixedly connected to the outer shell 14. The bearing 123 is mounted on the fixed base 15, and the support rod 121 passes through the fixed base 15.

[0040] Specifically, the striking rod 11 includes a striking head 111 and a rod 112. The striking head 111 and an elastic element 125 are respectively located at both ends of the rod 112. The support rod 121 is arranged along the straight line of the central axis of the mounting member 122. The rod 112 passes through the mounting member 122 and is eccentrically positioned. The mounting member 122 is positioned close to the elastic element 125, so that the striking rod 11 can apply a greater force. The handwheel 124 and the mounting member 122 are located at both ends of the support rod 121. The handwheel 124 is located outside the housing 14, and the mounting part 122 and the elastic part 125 are located inside the housing 14. The end of the elastic part 125 away from the rod 112 is fixed in the receiving cavity of the housing 14. The fixed base 15 has an opening in the middle, and the inner diameter of the opening matches the outer diameter of the bearing 123. The fixed base 15 is fixed on the housing 14, and the bearing 123 is mounted on the fixed base 15. The outer ring of the bearing 123 is connected to the fixed base 15, and the inner ring is connected to the support rod 121.

[0041] When the user turns the handwheel 124, the support rod 121 drives the mounting part 122 and the striking rod 11 to rotate. After the striking rod 11 rotates within a certain range, the elastic element 125 is also pulled to a certain length, and the striking head 111 of the striking rod 11 moves away from the tuning fork 13. When the user releases the handwheel 124, the elastic element 125 returns to its original state. Due to inertia, the striking head 111 of the striking rod 11 strikes the tuning fork 13 once, and the tuning fork 13 vibrates. The acceleration sensor 2 detects the acceleration of the vibration of the tuning fork 13.

[0042] In one embodiment, for the striking head 111 to strike the tuning fork 13, the elastic element 125 needs to deform, causing the striking head 111 to move a certain distance away from the tuning fork 13. Then, the handwheel 124 is released, the elastic element 125 returns to its original shape, and the striking head 111 strikes the tuning fork 13. To ensure better test results, it is necessary to ensure that the striking head 111 strikes the tuning fork 13 only once. Therefore, the elastic element 125 is made of a material with high rigidity, enabling it to apply a large tensile force. Meanwhile, the striking rod 11 is positioned... The device needs to ensure that it can only be struck once, so that when the mounting part 122 drives the striking rod 11 to strike the tuning fork 13, a second strike is avoided, ensuring that the vibration is singular and stable. In addition, the elongation of the elastic element 125 exceeds the total length of the rotation path of the support rod 121 driving the striking rod 11, so that the stretching range of the elastic element 125 exceeds the rotation range of the rotating assembly 12, preventing the elastic element 125 from stretching beyond its elastic limit. The deformation of the elastic element 125 does not exceed the elastic limit of the material, and it can completely return to its original shape after the external force is removed.

[0043] Optionally, the elastic element 125 is a spring.

[0044] Optionally, the striking head 111 can strike the tuning fork 13 two or more times. It is necessary to compare the two data points, namely the electrical signal of the acceleration sensor and the vibration of the tuning fork 13 itself detected by the test equipment, in order to determine whether the performance of the acceleration sensor 2 under test is qualified.

[0045] Preferably, the outer casing 14 includes a scale 141 with equidistant graduations. The scale 141 is positioned on the outer casing 14 and can be viewed downwards from the handwheel 124. The scale 141 is located around the handwheel 124, allowing the user to adjust the scale by rotating the handwheel 124, facilitating operation. In this embodiment, the scale 141 has four graduations, but the number of graduations on the scale 141 is not limited to the four specified in this embodiment and can be adjusted according to actual needs.

[0046] Preferably, the outer casing 14 is provided with feet 142, which can be attached to a flat surface, making the outer casing 14 more stable when placed on the flat surface.

[0047] Before testing, the accelerometer is attached to and fixed to the tuning fork 13. The tuning fork 13 is connected to the testing equipment, which collects the vibration data of the tuning fork 13 in real time. The accelerometer is also connected to collect the vibration data sensed by the accelerometer. During testing, the handwheel 124 is rotated in direction A (e.g., ...). Figure 4As shown, the handwheel 124 is rotated according to the scale line to perform different gear tests. The handwheel 124 will drive the support rod 121 to move the striking rod 11 and stretch the spring. After adjusting to the appropriate position, the handwheel 124 is released. The spring rebound force drives the striking rod 11 to accurately strike the tuning fork 13, producing a vibration with stable force and frequency. By comparing the vibration of the tuning fork 13 collected in real time with the electrical signal data of the acceleration sensor, it is determined whether the performance of the acceleration sensor is normal.

[0048] This device is easy to operate, requiring only the rotation of handwheel 124 to adjust its position, requiring minimal operator skill and improving testing efficiency. Multiple settings allow for testing different vibration amplitudes. Testing is precise and reliable; the striking force and frequency of each strike by the striking rod 11 are stable, avoiding secondary strikes and ensuring a pure vibration signal for accurate evaluation results. The device boasts high stability; the fixed base 15 and feet 142 work together to ensure stability during testing. It is highly adaptable, compatible with various sizes of tuning forks 13 and sensors to meet diverse testing needs.

[0049] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0050] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0052] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0053] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0055] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Since these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

[0056] The above description describes specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. An auxiliary device for measuring acceleration sensors, characterized in that, The device includes a tuning fork, a striking rod, and a rotating assembly, wherein the rotating assembly is connected to the striking rod, and an acceleration sensor to be detected is mounted on the tuning fork. The rotating assembly provides driving force to the striking rod, which strikes the tuning fork, and the accelerometer detects the vibration of the tuning fork.

2. The apparatus according to claim 1, characterized in that, The device includes a housing, and the tuning fork, the striking bar, and the rotating assembly are disposed within the housing. The tuning fork and the striking bar are mounted on one side surface of the housing.

3. The apparatus according to claim 1, characterized in that, The rotating assembly includes a support rod, a mounting component, and a bearing. The bearing and the mounting component are respectively disposed at both ends of the support rod. The support rod and the mounting component are fixedly connected. The support rod is connected to the inner ring of the bearing. The striking rod is connected to the mounting component.

4. The apparatus according to claim 3, characterized in that, The rotating assembly includes a handwheel, which is fixedly connected to the support rod and is located at one end of the support rod connected to the bearing.

5. The apparatus according to claim 1, characterized in that, The striking rod includes a striking head and a rod body, with the striking head disposed at one end of the rod body.

6. The apparatus according to claim 5, characterized in that, The rotating assembly includes an elastic element, one end of which is disposed at the end of the rod away from the striking head; the other end of the elastic element.

7. The apparatus according to claim 2, characterized in that, The outer casing includes a scale with equally spaced graduations.

8. The apparatus according to claim 4, characterized in that, It includes a fixed base, which is fixedly connected to the outer shell, the bearing is mounted on the fixed base, and the support rod passes through the fixed base.

9. The apparatus according to claim 2, characterized in that, The outer casing is equipped with feet.

10. The apparatus according to claim 2, characterized in that, The outer casing is equipped with a sliding door.

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