Acceleration sensor placement device and placement method

Abstract

The application discloses an acceleration sensor laying device and laying method, and belongs to the field of acceleration sensor application. The device comprises a block body, the bottom end surface of the block body is a flat surface, a sensor accommodating hole is formed in the bottom end surface of the block body, a spring is arranged in the sensor accommodating hole, the upper end of the spring is connected with the top end surface of the sensor accommodating hole, and the lower end of the spring is connected with the top end of the acceleration sensor; the sum of the length of the spring in a free state and the longitudinal height of the acceleration sensor is greater than the longitudinal height of the sensor accommodating hole, and the sum of the length of the spring in a completely compressed state and the longitudinal height of the acceleration sensor is less than the longitudinal height of the sensor accommodating hole; a wire outlet hole of the acceleration sensor is formed in the block body, and the wire outlet hole is in communication with the sensor accommodating hole and the outside of the block body. The application can quickly, conveniently and efficiently lay the acceleration sensor at a measuring point and make the signal of the acceleration sensor stable.

Description

Technical Field

[0001] This invention relates to the field of accelerometer applications, and in particular to an accelerometer deployment device and deployment method. Background Technology

[0002] Vibration testing of structures is very common, such as vibration testing of bridges during vehicle traffic, and vibration testing of buildings under earthquakes or explosive loads. During the testing process, vibration parameters are also tested to understand the health status of structures and components. For example, vibration acceleration sensors are used to measure the vibration acceleration signals of glass panels, stone panels, and decorative tiles. These signals are then converted into vibration frequency or vibration acceleration amplitude values ​​and changes to assess the risk of detachment.

[0003] During testing, sometimes there are thousands of test points at once. Since each test point requires the placement of an accelerometer for testing, the position of the accelerometer needs to be changed constantly, and the goal is to complete the measurement of a test point quickly.

[0004] Currently, accelerometers are typically installed using double-sided tape or adhesive to fix them to the measurement points. Because accelerometers are precision devices, each time their position is changed, they must be manually fixed to the measurement point using adhesive or tape, and vibration testing can only proceed after the signal has stabilized. During this fixing process, the accelerometer is subjected to significant disturbances, causing severe signal drift. From fixing to achieving the required vibration signal stability, it takes approximately 10 minutes, accounting for more than half of the total testing time. Clearly, for a large number of test points, this time-consuming process significantly impacts the overall testing efficiency and convenience. Furthermore, instability during the fixing process can affect the accuracy of subsequent tests.

[0005] Another approach involves attaching a magnet to the end of the accelerometer, which then holds the sensor to the test component using magnetic force. However, this magnet can only attract components made of ferromagnetic materials; it cannot attract other materials, significantly limiting its application. Summary of the Invention

[0006] To address the problems of existing technologies, this invention provides an accelerometer deployment device and method, which enables the accelerometer to be deployed quickly, conveniently, and efficiently at the measurement point, and to quickly stabilize its signal.

[0007] The technical solution provided by this invention is as follows:

[0008] An accelerometer placement device includes a block, the bottom surface of which is flat, and a sensor receiving hole vertically arranged inside the block is formed on the bottom surface of the block, with the accelerometer located inside the sensor receiving hole.

[0009] A vertically arranged spring is installed inside the sensor receiving hole. The spring is located between the accelerometer and the top surface of the sensor receiving hole. The upper end of the spring is connected to the top surface of the sensor receiving hole, and the lower end is connected to the top of the accelerometer.

[0010] The sum of the length of the spring in its free state and the longitudinal height of the accelerometer is greater than the longitudinal height of the sensor's receiving hole; the sum of the length of the spring in its fully compressed state and the longitudinal height of the accelerometer is less than the longitudinal height of the sensor's receiving hole.

[0011] The block has an outlet hole for an accelerometer, which connects the sensor housing hole to the outside of the block.

[0012] Furthermore, the shape of the sensor receiving hole is adapted to the accelerometer, and the lateral dimension of the sensor receiving hole should be sufficient to accommodate the accelerometer and constrain the accelerometer from moving in the lateral direction.

[0013] Furthermore, the wire outlet is vertically formed above the sensor receiving hole, and the wire outlet connects the top of the sensor receiving hole with the top surface of the block.

[0014] Furthermore, the lateral dimension of the outlet hole is smaller than the lateral dimension of the top of the sensor receiving hole, forming a stepped structure.

[0015] Furthermore, the upper end of the spring is connected to the stepped structure.

[0016] Furthermore, the block is a cylindrical structure, and the central axis of the wire outlet and the sensor receiving hole is located on the central axis of the cylindrical structure.

[0017] Furthermore, the mass of the block is more than 10 times the mass of the accelerometer.

[0018] An accelerometer deployment method, applied to the aforementioned accelerometer deployment device, the method comprising:

[0019] S1: Carry the accelerometer deployment device and the accelerometer sensor contained inside it to the measurement point of the structure under test;

[0020] S2: Place the overall structure onto the structure under test, and make the bottom end of the accelerometer face the measurement point;

[0021] S3: Apply a set pressure to the top surface of the block to compress and deform the spring, and move the accelerometer into the sensor receiving hole until the bottom surface of the accelerometer is on the same plane as the bottom surface of the block and in close contact with the measurement point.

[0022] The present invention has the following beneficial effects:

[0023] This invention addresses the problems of time-consuming and cumbersome operation in placing accelerometers at test points during vibration acceleration testing of structural components. It provides an accelerometer placement device for rapid placement and signal stabilization. This eliminates the tedious process of using double-sided tape to fix the accelerometer; the device is simply pressed onto the measurement point, resulting in high placement efficiency. Furthermore, it ensures close contact between the accelerometer and the measurement point on the tested structure, guaranteeing signal stability. Therefore, this invention features rapid and convenient accelerometer placement with stable signals, significantly reducing placement time and greatly improving testing efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the accelerometer deployment device of the present invention;

[0025] Figure 2 A schematic diagram of the block;

[0026] Figure 3 A schematic diagram showing the placement of an acceleration sensor within the block;

[0027] Figure 4 This is a schematic diagram of the structure where the accelerometer sensor has already been deployed. Detailed Implementation

[0028] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0029] Example 1:

[0030] This invention provides an accelerometer deployment device, such as... Figure 1-4 As shown, it includes a block 1. The surface of the block 1 that contacts the structure 7 under test is the bottom surface 9, which is required to be flat. The block 1 has a sensor receiving hole 2 vertically arranged inside the block 1 from the bottom surface 9. The acceleration sensor 5 is located inside the sensor receiving hole 2.

[0031] A vertically arranged spring 4 is installed inside the sensor receiving hole 2. The spring 4 is located between the accelerometer 5 and the top surface of the sensor receiving hole 2. The upper end of the spring 4 is connected and fixed to the top surface of the sensor receiving hole 2, and the lower end is connected and fixed to the top of the accelerometer 5. It can be fixed by adhesive or welding.

[0032] Spring 4 should be able to extend and retract freely. The sum of the length of spring 4 in its free state and the longitudinal height of the accelerometer 5 should be greater than the longitudinal height of the sensor housing hole 2. That is, in its free state, the accelerometer 5 should protrude downwards from the bottom end face 9 of block 1. Figure 3 As shown. The sum of the length of the spring 4 in its fully compressed state and the longitudinal height of the accelerometer 5 is less than the longitudinal height of the sensor receiving hole 2. That is, before the spring 4 is fully compressed, it should be ensured that the accelerometer 5 can be completely pressed into the sensor receiving hole 2, as shown. Figure 4 As shown.

[0033] The block 1 has an outlet hole 3 for the accelerometer 5. The outlet hole 3 connects the sensor housing hole 2 to the outside of the block 1, and the connecting wire 6 of the accelerometer 5 is led out through the outlet hole 3.

[0034] During measurement, the accelerometer 5 is aligned with the measurement point 8. A certain pressure F is applied to the upper end of the block 1 (the pressure is applied through an external structure, and in some scenarios, the weight of the block itself also contributes to the compression of the spring). At this time, the spring 4 is compressed and deformed, and the accelerometer 5 moves into the sensor receiving hole 2 until the bottom surface of the accelerometer 5 is on the same plane as the bottom surface 9 of the block 1. Due to the compression of the spring 4, the spring 4 pressure pushes the accelerometer 5 outward, making the accelerometer 5 in close contact with the measurement point 8 of the measured structure 7, thus completing the placement of the accelerometer. Figure 4 As shown.

[0035] This invention addresses the problems of time-consuming and cumbersome operation in placing accelerometers at test points during vibration acceleration testing of structural components. It provides an accelerometer placement device for rapid placement and signal stabilization, eliminating the tedious process of using double-sided tape to fix the accelerometer. The device is simply pressed onto the measurement point, resulting in high placement efficiency. Furthermore, it ensures close contact between the accelerometer and the measurement point of the structure under test, guaranteeing signal stability. Therefore, this invention features rapid and convenient accelerometer placement with stable signal, significantly reducing placement time and greatly improving testing efficiency.

[0036] The shape of the sensor receiving hole 2 should be adapted to the accelerometer 5. The lateral dimension of the sensor receiving hole 2 should be sufficient to accommodate the accelerometer 5 and constrain the accelerometer 5 to move only in the vertical direction, ensuring stability during testing. That is, the lateral dimension of the sensor receiving hole 2 should be slightly larger than the lateral dimension of the accelerometer 5 (e.g., greater than 0.1 mm).

[0037] In one example, the wire outlet 3 is vertically opened above the sensor receiving hole 2, and the wire outlet 3 connects the top of the sensor receiving hole 2 with the top surface of the block 1, and the wire exits from the top.

[0038] The lateral dimension of the outlet hole 3 should be smaller than the lateral dimension of the top of the sensor receiving hole 2, forming a stepped structure, and the upper end of the spring 4 is connected to this stepped structure.

[0039] Block 1 can be in the shape of a rhombus or a cylinder, preferably a cylinder. The central axis of the wire outlet hole 3 and the sensor receiving hole 2 is located on the central axis of the cylindrical structure.

[0040] The material of block 1 can be a metal or ceramic, or other materials with high density and hardness. The mass of block 1 should be at least 10 times the mass of accelerometer 5. Because the mass of block 1 is relatively large compared to accelerometer 5, the heavier fixing block helps the disturbed accelerometer to settle quickly, thus achieving rapid stabilization of its vibration signal.

[0041] This invention uses a double-sided adhesive method, a magnetic adsorption method, and the method of this invention to place accelerometers on glass panels, ceramic panels, concrete panels, and steel plates. The results are shown in Table 1. As can be seen from Table 1, the total consumption time using this invention is significantly shortened, and it can adapt to various working conditions.

[0042] Table 1: Time consumed by different deployment schemes under different deployment conditions

[0043]

[0044] Example 2:

[0045] This invention provides a method for deploying an accelerometer, which is applied to the accelerometer deployment device described in Embodiment 1. The method includes:

[0046] S1: Carry the accelerometer deployment device and the accelerometer 5 housed inside it to the measurement point 8 of the structure under test 7.

[0047] S2: Place the entire structure onto the structure under test 7, and align the bottom of the accelerometer 5 with the measurement point 8.

[0048] S3: Apply a set pressure to the top surface of block 1, causing spring 4 to compress and deform. Accelerometer 5 moves into sensor housing hole 2 until the bottom surface of accelerometer 5 is on the same plane as the bottom surface of block 1 and in close contact with measuring point 8, completing the installation. Figure 4 As shown.

[0049] The method provided in this embodiment is applied to the device described in the aforementioned embodiment 1. For the sake of brevity, any parts not mentioned in this embodiment can be referred to the corresponding content in the aforementioned embodiment 1, and will not be repeated here.

[0050] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An accelerometer deployment device, characterized in that, The device includes a block, the bottom surface of which is flat, and a sensor receiving hole vertically arranged inside the block is formed on the bottom surface of the block, with the acceleration sensor located inside the sensor receiving hole. A vertically arranged spring is installed inside the sensor receiving hole. The spring is located between the accelerometer and the top surface of the sensor receiving hole. The upper end of the spring is connected to the top surface of the sensor receiving hole, and the lower end is connected to the top of the accelerometer. The sum of the length of the spring in its free state and the longitudinal height of the accelerometer is greater than the longitudinal height of the sensor's receiving hole; the sum of the length of the spring in its fully compressed state and the longitudinal height of the accelerometer is less than the longitudinal height of the sensor's receiving hole. The block has an outlet hole for an accelerometer, which connects the sensor housing hole to the outside of the block.

2. The accelerometer deployment device according to claim 1, characterized in that, The shape of the sensor receiving hole is adapted to the accelerometer, and the lateral dimension of the sensor receiving hole should be sufficient to accommodate the accelerometer and constrain the accelerometer from moving in the lateral direction.

3. The accelerometer deployment device according to claim 2, characterized in that, The wire outlet is vertically formed above the sensor receiving hole, and the wire outlet connects the top of the sensor receiving hole with the top surface of the block.

4. The accelerometer deployment device according to claim 3, characterized in that, The lateral dimension of the outlet hole is smaller than the lateral dimension of the top of the sensor receiving hole, forming a stepped structure.

5. The accelerometer deployment device according to claim 4, characterized in that, The upper end of the spring is connected to the stepped structure.

6. The accelerometer deployment device according to claim 4, characterized in that, The block is a cylindrical structure, and the central axis of the wire outlet and the sensor receiving hole is located on the central axis of the cylindrical structure.

7. The accelerometer deployment device according to any one of claims 1-6, characterized in that, The mass of the block is more than 10 times the mass of the accelerometer.

8. A method for deploying an accelerometer, characterized in that, The method, applied to the accelerometer deployment device according to any one of claims 1-7, comprises: S1: Carry the accelerometer deployment device and the accelerometer sensor contained inside it to the measurement point of the structure under test; S2: Place the overall structure onto the structure under test, and make the bottom end of the accelerometer face the measurement point; S3: Apply a set pressure to the top surface of the block to compress and deform the spring, and move the accelerometer into the sensor receiving hole until the bottom surface of the accelerometer is on the same plane as the bottom surface of the block and in close contact with the measurement point.

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