Micro displacement simulation measurement device

Abstract

The utility model relates to the technical field of excitation measurement, in particular to a micro displacement simulation measurement device, which comprises a first base, a vibrating plate, a target pasting plate, a vibration exciter, a second base, a support rod and a displacement acquisition mechanism, the vibration plate is arranged on the first base, the target pasting plate is arranged on the vibration plate, and the vibration exciter is adjustably arranged in the height direction of the vibration plate; the supporting rod is arranged on the second base; the displacement acquisition mechanism comprises a laser displacement meter, a measurement target and an installation fixing block; the laser displacement meter is arranged on the supporting rod through the installation fixing block, the measuring target is arranged on the target pasting plate, and the laser displacement meter is used for being matched with the measuring target to detect the tiny displacement of the vibration plate. According to the utility model, through cooperation of the vibration plate and the vibration exciter, infinitesimal displacement motion smaller than 0.5 mm and reciprocating motion frequency of 5-100 Hz can be provided, and the laser displacement meter in the embodiment can accurately measure the vibration plate.

Description

Technical Field

[0001] This utility model relates to the field of vibration measurement technology, specifically to a micro-displacement simulation measurement device. Background Technology

[0002] Motion Magnification (PVM) algorithms can amplify minute target displacements to the order of magnitude that Digital Image Correlation (DIC) methods can accurately calculate. Therefore, an experimental setup is needed to simulate minute target displacements and measure the true displacement values ​​to verify the accuracy of DIC displacement monitoring.

[0003] Existing micro-displacement measurement and accuracy assessment devices consist of a lead screw slide, an electrical controller, and a display. The lead screw slide is electrically powered, comprising a speed-regulating motor and a lead screw slider. Under the control of the electrical controller, the motor rotates, thereby driving the lead screw to rotate and the slide to reciprocate, thus simulating structural displacement changes. Simultaneously, the display shows the slider's displacement in real time via electrical control signals, typically in millimeters. However, existing devices cannot simulate displacement movements smaller than 0.5 mm, and there is a delay of over 0.1 seconds when the electrical controller adjusts the motor speed and direction of rotation, making it impossible to simulate rapid displacement movements with reciprocating frequencies exceeding 10 Hz.

[0004] In summary, there is an urgent need for a micro-displacement simulation measurement device to solve the problems existing in the current technology. Utility Model Content

[0005] The purpose of this utility model is to provide a micro-displacement simulation measurement device, and the specific technical solution is as follows:

[0006] A micro-displacement simulation measurement device includes a first base, a vibrating plate, a target adhesive plate, an exciter, a second base, a support rod, and a displacement acquisition mechanism;

[0007] The vibrating plate is mounted on the first base, the target adhesive plate is mounted on the vibrating plate, and the exciter is adjustable along the height direction of the vibrating plate.

[0008] The support rod is mounted on the second base;

[0009] The displacement acquisition mechanism includes a laser displacement meter, a measuring target, and a mounting block;

[0010] The laser displacement meter is mounted on the support rod by a mounting block, and the measuring target is mounted on the target adhesive plate. The laser displacement meter and the measuring target work together to detect the minute displacement of the vibrating plate.

[0011] Optionally, the vibrating plate is provided with a set of mounting holes, which are arranged along the vertical height direction of the vibrating plate. The exciter is connected to the vibrating plate through the mounting holes and bolts, so as to realize the adjustable setting.

[0012] Optionally, the first base is further provided with a reinforcing support, which is fitted to the vibration plate.

[0013] Optionally, the first base has an opening, the support rod is aligned with the opening, and the support rod passes through the opening.

[0014] The application of the technical solution of this utility model has the following beneficial effects:

[0015] This invention provides a micro-displacement simulation measurement device. Through the cooperation of a vibrating plate and an exciter, it can provide micro-displacement motion of less than 0.5 mm and reciprocating motion frequencies of 5–100 Hz. Furthermore, this device uses a laser displacement meter to measure the vibrating plate, obtaining displacement data with an accuracy better than ±0.001 mm.

[0016] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 This is a schematic diagram of the micro-displacement simulation measurement device in a preferred embodiment of the present invention.

[0019] Among them, 1-first base, 2-vibration plate, 3-target adhesive plate, 4-exciter, 5-second base, 6-support rod, 7-laser displacement meter, 8-installation fixing block, 9-fixed support component. Detailed Implementation

[0020] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0021] Example:

[0022] See Figure 1 This embodiment provides a micro-displacement simulation measurement device, including a first base 1, a vibration plate 2, a target adhesive plate 3, an exciter 4, a second base 5, a support rod 6, and a displacement acquisition mechanism.

[0023] Furthermore, the vibrating plate 2 is disposed on the first base 1, the target adhesive plate 3 is disposed on the vibrating plate 2, and the exciter 4 is adjustable along the height direction of the vibrating plate 2. In this embodiment, the thickness of the vibrating plate 2 is 5mm and the height is 500mm. The high-frequency vibration generated by the exciter 4 will drive the vibrating plate to generate a high-frequency micro-vibration displacement in a direction perpendicular to the surface of the vibrating plate. In this embodiment, the adjustable displacement range of the exciter 4 is 200mm downward from the top of the vibrating plate 2. In this embodiment, the vibration amplitude and frequency of the vibrating plate 2 can be changed by adjusting the position of the exciter 4 on the vibrating plate 2. The vibration displacement amplitude of the vibrating plate corresponding to the position of the exciter 4 from top to bottom is 0.1mm to 5mm, and the vibration frequency is 100Hz to 5Hz.

[0024] In this embodiment, the vibrating plate 2 is provided with a set of mounting holes, which are arranged along the vertical height direction of the vibrating plate 2. The exciter 4 is connected to the vibrating plate 2 through the mounting holes and bolts, so as to achieve adjustable setting. Specifically, the mounting holes are screw holes, and there are two rows of screw holes along the height direction of the vibrating plate 2, with a spacing of 20mm between adjacent vertical screw holes.

[0025] Furthermore, in this embodiment, the first base 1 is also provided with a reinforcing support 9, which is attached to the vibration plate 2 to ensure the stability of the device during vibration.

[0026] Furthermore, the support rod 6 is mounted on the second base 5. In this embodiment, the support rod 6 is specifically an aluminum profile support rod with a diameter of 40mm, used to mount the laser displacement meter 7.

[0027] The displacement acquisition mechanism includes a laser displacement meter 7, a measuring target, and a mounting block 8;

[0028] The laser displacement gauge 7 is mounted on the support rod 6 via a mounting block 8, and the measuring target is mounted on the target adhesive plate 3. The laser displacement gauge 7 and the measuring target work together to detect minute displacements of the vibrating plate 2. In this embodiment, the ranging accuracy of the laser displacement gauge 7 is better than ±0.001mm. The front surface of the laser displacement gauge 7 is 50mm away from the vibrating plate 2, and its effective measuring range is ±15mm, meeting the measurement requirement of a maximum amplitude of 5mm for the vibrating plate 2.

[0029] Furthermore, the first base 1 has an opening, the support rod 6 is aligned with the opening, and the support rod 6 passes through the opening. It should be noted that the first base 1 in this embodiment is relatively large to ensure the stability of the device when the vibrating plate 2 vibrates. To accommodate the second base 5, this embodiment has an opening on the first base 1, which is a square opening with a side length of 110mm. The second base 5 (preferably a square with a side length of 100mm in this embodiment) is placed at the square opening. This embodiment, through a split design, places the vibrating plate 2 within the effective measurement range of the laser displacement meter 7, while avoiding interference with the stability of the laser displacement meter 7 during vibration, thus ensuring measurement accuracy.

[0030] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A micro-displacement analog measurement device, characterized by, It includes first base (1), vibrating plate (2), target paste board (3), exciter (4), second base (5), support rod (6) and displacement acquisition mechanism; The vibrating plate (2) is arranged on the first base (1), the target paste board (3) is arranged on the vibrating plate (2), and the exciter (4) is adjustably arranged along the height direction of the vibrating plate (2); The support rod (6) is arranged on the second base (5); The displacement acquisition mechanism comprises a laser displacement meter (7), a measuring target and a mounting fixed block (8); The laser displacement meter (7) is arranged on the support rod (6) through the mounting fixed block (8), the measuring target is arranged on the target paste board (3), and the laser displacement meter (7) is used for detecting the micro displacement of the vibrating plate (2) in cooperation with the measuring target.

2. The micro-displacement analog measurement device of claim 1, wherein, A group of mounting holes are arranged on the vibrating plate (2) along the vertical height direction of the vibrating plate (2), the exciter (4) is bolted to the vibrating plate (2) through the mounting holes, and the adjustable arrangement is realized.

3. The micro-displacement analog measurement device of claim 1, wherein, The first base (1) is further provided with a reinforcing support (9), and the reinforcing support (9) is arranged in close contact with the vibrating plate (2).

4. The micro-displacement analog measurement device of claim 1, wherein, The first base (1) is provided with an opening, the support rod (6) is aligned with the opening, and the support rod (6) is arranged through the opening.

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