A sensitivity calibration device for displacement sensor sampling detection

Abstract

The utility model discloses a kind of sensitivity verification devices for displacement sensor sampling detection, it is related to displacement sensor sampling test technical field.The utility model includes adjusting assembly, the top of adjusting assembly is provided with clamping assembly, driving assembly is provided on clamping assembly, the side of clamping assembly is provided with verification assembly, adjusting assembly is used to change the height of clamping assembly.The utility model is connected by adjusting assembly and driving assembly, driving assembly can drive clamping assembly when rotating, so that clamping assembly is in open state, displacement sensor can be placed in clamping assembly at this time, then reverse driving assembly drives clamping assembly to close again, so that the displacement sensor of various models can be fixed, the detection head height of different model displacement sensor is different, rotating adjusting assembly drives clamping assembly and displacement sensor to carry out height adjustment, so that the detection head of displacement sensor can be connected with verification assembly, use more flexible, convenient.

Description

Technical Field

[0001] This utility model belongs to the field of displacement sensor sampling and testing technology, and specifically relates to a sensitivity calibration device for sampling and testing of displacement sensors. Background Technology

[0002] A displacement sensor is a device that converts linear displacement into an electrical signal and is commonly used in various testing machines. According to the verification procedures, displacement sensors need to be calibrated periodically to ensure the accuracy of their data.

[0003] Most existing displacement sensor calibration devices first fix the displacement sensor to be tested, then connect the micrometer head to the displacement sensor, adjust the micrometer head to move it a certain distance, and compare the distance moved by the micrometer head with the data fed back by the displacement sensor. However, this method can only fix a single type of displacement sensor, which has certain limitations. Moreover, when testing different displacement sensors, the position of the detection head of the displacement sensor is different, which may cause the micrometer head to be unable to connect with the detection head of the displacement sensor.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in related technologies, this utility model proposes a sensitivity calibration device for sampling detection of displacement sensors to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a sensitivity calibration device for sampling and testing of displacement sensors, including an adjustment component, a clamping component on the top of the adjustment component, a driving component on the clamping component, and a calibration component on the side of the clamping component. The adjustment component is used to change the height of the clamping component, and the driving component is used to drive the clamping component to fix the displacement sensor to be tested.

[0007] Furthermore, the adjusting assembly includes a screw cylinder, the inside of which is threadedly connected to a first screw rod, the first screw rod being fixedly connected to the bottom of the clamping assembly, the bottom of which is fixedly connected to a sliding rod, the outer surface of which is slidably connected to a fixed cylinder, the inside of which is slidably connected to a limiting plate, and the limiting plate being fixedly connected to the sliding rod.

[0008] Furthermore, the clamping assembly includes a square base, the inside of which is provided with a sliding groove, and a clamping plate is slidably connected inside the sliding groove. The first screw and the sliding rod are both fixedly connected to the bottom of the square base.

[0009] Furthermore, the drive assembly includes a fixed base, which is fixedly connected to the bottom of the square base. A second screw is rotatably connected to the outer surface of the fixed base. A sliding plate is threadedly connected to the outer surface of the second screw. The sliding plate is fixedly connected to the bottom of the clamping plate and slidably connected to the slide groove. A handle is fixedly connected to the end of the second screw.

[0010] Furthermore, the verification component includes a base, a slide rail is fixedly connected to the top of the base, an electric slider is slidably connected to the top of the slide rail, and a micrometer is fixedly mounted on the top of the electric slider.

[0011] Furthermore, an installation component is fixedly connected to the bottom of the base.

[0012] Furthermore, the mounting assembly includes a square plate, the base is fixedly connected to the top of the square plate, the top of the square plate has a screw hole, the screw hole is internally threaded with a bolt, the square plate is fixedly connected to a mounting plate by the bolt, the screw cylinder is rotatably connected to the mounting plate, and the fixing cylinder is fixedly connected to the square plate.

[0013] This utility model has the following beneficial effects: This invention adjusts the connection between the adjustment component and the drive component. When the drive component rotates, it can move the clamping component, causing the clamping component to be in an open state. At this time, the displacement sensor can be placed inside the clamping component. Then, the drive component is reversed to cause the clamping component to close, thereby fixing various types of displacement sensors. Different types of displacement sensors have different detection head heights. Rotating the adjustment component causes the clamping component and the displacement sensor to adjust their heights, so that the detection head of the displacement sensor can be docked with the calibration component, making it more flexible and convenient to use.

[0014] This invention utilizes the connection between a first screw and a second screw. Rotating the second screw causes the sliding plate and clamping plate to move, allowing displacement sensors of various sizes to be placed on the square base. Subsequently, reversing the second screw causes the clamping plate to move closer to the square base, where it clamps and fixes the displacement sensor. This facilitates the clamping and fixing of various displacement sensor models, making it more flexible to use. Rotating the screw cylinder causes the first screw to move, which in turn causes the square base and displacement sensor to move up and down, bringing the displacement sensor on the square base to the same height as the micrometer, facilitating calibration.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the external outline structure of this utility model; Figure 2 This is a cross-sectional view of the fixed cylinder structure of this utility model; Figure 3 This is a bottom view of the clamping assembly of this utility model; Figure 4 This is a schematic cross-sectional view of the square base structure of this utility model; Figure 5 This is a schematic diagram of the structure of the testing component of this utility model; Figure 6 This is a schematic diagram of the installation component structure of this utility model.

[0018] The attached diagram lists the components represented by each number as follows: 1. Adjustment assembly; 101. Screw barrel; 102. First screw; 103. Sliding rod; 104. Fixed cylinder; 105. Limiting plate; 2. Clamping assembly; 201. Square base; 202. Slide groove; 203. Clamping plate; 3. Drive assembly; 301. Fixed base; 302. Second screw; 303. Sliding plate; 304. Handle; 4. Calibration assembly; 401. Base; 402. Slide rail; 403. Electric slider; 404. Micrometer; 5. Mounting assembly; 501. Square plate; 502. Screw hole; 503. Bolt; 504. Mounting plate. Detailed Implementation

[0019] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0020] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0021] Please see Figures 1-6 As shown, this utility model is a sensitivity calibration device for sampling and testing of displacement sensors, including an adjustment component 1, a clamping component 2 is provided on the top of the adjustment component 1, a driving component 3 is provided on the clamping component 2, and a calibration component 4 is provided on the side of the clamping component 2. The adjustment component 1 is used to change the height of the clamping component 2, and the driving component 3 is used to drive the clamping component 2 to fix the displacement sensor to be tested.

[0022] First, place the displacement sensor to be tested on the clamping assembly 2. Rotate the drive assembly 3 below the clamping assembly 2. The drive assembly 3 causes the clamping assembly 2 to begin to retract, fixing the displacement sensor in place. Then, rotate the adjustment assembly 1 to extend and retract it. The adjustment assembly 1 drives the clamping assembly 2 and the displacement sensor to move up and down, thereby adjusting the height of the displacement sensor so that the detection head of the displacement sensor can dock with the calibration assembly 4. The displacement sensor can then be tested by the calibration assembly 4.

[0023] This invention adjusts the connection between component 1 and drive component 3. When drive component 3 rotates, it drives clamping component 2, causing clamping component 2 to be in an open state. At this time, displacement sensor can be placed inside clamping component 2. Then, drive component 3 is reversed to drive clamping component 2 to close, thereby fixing various types of displacement sensors. Different types of displacement sensors have different detection head heights. Rotating adjustment component 1 drives clamping component 2 and displacement sensor to adjust the height, so that the detection head of displacement sensor can be docked with calibration component 4, making it more flexible and convenient to use.

[0024] In one embodiment, the adjustment component 1 includes a screw barrel 101, with a first screw 102 threadedly connected to the inside of the screw barrel 101. The first screw 102 is fixedly connected to the bottom of the clamping component 2. A sliding rod 103 is fixedly connected to the bottom of the clamping component 2. A fixed cylinder 104 is slidably connected to the outer surface of the sliding rod 103. A limiting plate 105 is slidably connected inside the fixed cylinder 104. The limiting plate 105 is fixedly connected to the sliding rod 103.

[0025] Rotating the screw barrel 101 drives the first screw 102 to move, and the first screw 102 drives the clamping assembly 2 to move. The sliding rod 103 and the limiting plate 105 at the bottom of the clamping assembly 2 slide within the fixed cylinder 104. The sliding rod 103 and the fixed cylinder 104 can guide the movement of the first screw 102 to avoid unnecessary rotation of the first screw 102. The limiting plate 105 can only slide inside the fixed cylinder 104, thereby limiting the movement distance of the sliding rod 103 and the first screw 102.

[0026] In one embodiment, the clamping assembly 2 includes a square base 201, the square base 201 having a sliding groove 202 inside, and a clamping plate 203 slidably connected inside the sliding groove 202. The first screw 102 and the sliding rod 103 are both fixedly connected to the bottom of the square base 201.

[0027] Pull the clamping plate 203 along the slide groove 202 to move the clamping plate 203 away from the square base 201. At this time, displacement sensors of different models and sizes can be placed on the square base 201. After the displacement sensor to be tested is placed on the square base 201, push the clamping plate 203 back. The clamping plate 203 moves towards the square base 201, so that the clamping plate 203 clamps the displacement sensor and avoids unnecessary movement during the calibration process.

[0028] The outer surface of the screw barrel 101 is provided with anti-slip texture or is fixedly connected to a rotating handle (not shown) for manual rotation. The user drives the first screw 102 up and down by rotating the screw barrel 101, thereby achieving fine-tuning of the height of the clamping assembly 2. The rotation angle of the screw barrel 101 is linearly related to the height change, and the adjustment accuracy can be improved through scale markings.

[0029] In one embodiment, the drive assembly 3 includes a fixed base 301, which is fixedly connected to the bottom of the square base 201. A second screw 302 is rotatably connected to the outer surface of the fixed base 301. A sliding plate 303 is threadedly connected to the outer surface of the second screw 302. The sliding plate 303 is fixedly connected to the bottom of the clamping plate 203 and is slidably connected to the slide groove 202. A handle 304 is fixedly connected to the end of the second screw 302.

[0030] Rotate the handle 304, which drives the second screw 302 to rotate. The second screw 302 drives the sliding plate 303 to move along the slide groove 202. The sliding plate 303 drives the clamping plate 203 to move, which can clamp or release the displacement sensor.

[0031] In one embodiment, the verification component 4 includes a base 401, a slide rail 402 fixedly connected to the top of the base 401, an electric slider 403 slidably connected to the top of the slide rail 402, and a micrometer 404 fixedly mounted on the top of the electric slider 403.

[0032] After adjusting the displacement sensor on the square base 201 to the same height as the micrometer 404, the electric slider 403 drives the micrometer 404 to move along the slide rail 402, so that the micrometer 404 docks with the displacement sensor. Then, the detection can be completed by comparing the data of the micrometer 404 and the displacement sensor.

[0033] The electric slider 403 is controlled by an external controller (not shown), which may include a power interface, directional buttons, and a displacement fine-tuning knob for precisely controlling the moving distance and speed of the electric slider 403 along the slide rail 402. The movement signal of the electric slider 403 can be received via wired or wireless means to ensure smooth docking between the micrometer 404 and the detection head of the displacement sensor.

[0034] The data comparison between the micrometer 404 and the displacement sensor is achieved through a data acquisition system. Specifically, the output signal of the micrometer 404 and the electrical signal of the displacement sensor are respectively connected to a data acquisition card (not shown), and are compared and recorded in real time by computer software. The software can calculate the displacement error and generate a verification report, ensuring the automation and accuracy of the verification process. Alternatively, the scale value of the micrometer 404 can be manually compared with the output value of the displacement sensor.

[0035] In one embodiment, for the base 401 described above, the bottom of the base 401 is fixedly connected to the mounting component 5.

[0036] In one embodiment, the mounting assembly 5 includes a square plate 501, a base 401 fixedly connected to the top of the square plate 501, a screw hole 502 opened on the top of the square plate 501, a bolt 503 threaded into the screw hole 502, a mounting plate 504 fixedly connected to the square plate 501 by the bolt 503, a screw cylinder 101 rotatably connected to the mounting plate 504, and a fixed cylinder 104 fixedly connected to the square plate 501.

[0037] If the square base 201 is not suitable for clamping and fixing the displacement sensor, the limiting fixation of the square base 201 and the mounting plate 504 can be released by removing the bolts 503. At this time, the square base 201 and the mounting plate 504 can be removed from the square plate 501, a new square base 201 can be replaced, and then it can be fixed to the square plate 501 by the bolts 503.

[0038] The detachable design of the mounting assembly 5 allows users to replace different square bases 201 according to the dimensions of the displacement sensor. For example, for large displacement sensors, a square base 201 with a wide groove 202 can be used; for irregularly shaped sensors, a dedicated clamping base can be used. The standardized interfaces of the square base 201 (such as the distribution dimensions of the screw holes 502) ensure compatibility with the mounting plate 504.

[0039] Through the above technical solution, 1. By adjusting the connection between component 1 and drive component 3, drive component 3 can drive clamping component 2 when rotating, so that clamping component 2 is in the open state. At this time, the displacement sensor can be placed in clamping component 2. Then, reverse drive component 3 to drive clamping component 2 to close, thereby fixing various types of displacement sensors. Different types of displacement sensors have different detection head heights. Rotating adjustment component 1 drives clamping component 2 and displacement sensor to adjust the height, so that the detection head of displacement sensor can dock with calibration component 4, making it more flexible and convenient to use; 2. Through the connection of first screw 102 and second screw 302, rotation The second screw 302 drives the sliding plate 303 and the clamping plate 203 to move. At this time, displacement sensors of various sizes can be placed on the square base 201. Then, the second screw 302 is reversed to drive the clamping plate 203 to move closer to the square base 201. The clamping plate 203 can clamp and fix the displacement sensor on the square base 201, which is convenient for clamping and fixing various types of displacement sensors and is more flexible in use. The rotating screw cylinder 101 drives the first screw 102 to move. The first screw 102 drives the square base 201 and the displacement sensor to move up and down, so that the displacement sensor on the square base 201 and the micrometer 101 are at the same height, which is convenient for calibration.

[0040] The sensitivity calibration principle of this invention is based on the comparative measurement method. A micrometer is used as a standard displacement generator. Its probe precisely aligns with the detection head of the displacement sensor under test, generating a known precise displacement change ΔX. Simultaneously, the displacement sensor converts this mechanical displacement into an electrical signal change ΔV. During calibration, the sensor's electrical signal output needs to be connected to an external data acquisition system (such as a high-precision multimeter or data acquisition card). After the micrometer moves point by point and stabilizes, the standard displacement value X and the sensor output value V are recorded synchronously. By linearly fitting the data from multiple test points within the full range, the slope of the fitted line is obtained using the sensitivity calculation formula S=ΔV / ΔX, which is taken as the sensor's rated sensitivity. Further analysis of the deviation between each measurement point and the fitted line determines its linear error. Ultimately, this achieves quantitative calibration of the displacement sensor's sensitivity and linearity through the transmission of standard displacement via a mechanical structure and in collaboration with the electrical signal acquisition system.

[0041] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," 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 utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer 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.

[0042] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A sensitivity calibration device for sampling detection of a displacement sensor, comprising an adjustment component (1), characterized in that, The top of the adjustment component (1) is provided with a clamping component (2), the clamping component (2) is provided with a driving component (3), and the side of the clamping component (2) is provided with a calibration component (4). The adjustment component (1) is used to change the height of the clamping component (2), and the driving component (3) is used to drive the clamping component (2) to fix the displacement sensor being detected.

2. The sensitivity calibration device for sampling detection of a displacement sensor according to claim 1, characterized in that, The adjusting assembly (1) includes a screw barrel (101), the screw barrel (101) is internally threaded with a first screw (102), the first screw (102) is fixedly connected to the bottom of the clamping assembly (2), the bottom of the clamping assembly (2) is fixedly connected with a sliding rod (103), the outer surface of the sliding rod (103) is slidably connected with a fixed cylinder (104), the inside of the fixed cylinder (104) is slidably connected with a limiting plate (105), and the limiting plate (105) is fixedly connected to the sliding rod (103).

3. The sensitivity calibration device for sampling detection of a displacement sensor according to claim 2, characterized in that, The clamping assembly (2) includes a square base (201), and a sliding groove (202) is provided inside the square base (201). A clamping plate (203) is slidably connected inside the sliding groove (202). The first screw (102) and the sliding rod (103) are both fixedly connected to the bottom of the square base (201).

4. The sensitivity calibration device for sampling detection of a displacement sensor according to claim 3, characterized in that, The drive assembly (3) includes a fixed base (301), which is fixedly connected to the bottom of the square base (201). A second screw (302) is rotatably connected to the outer surface of the fixed base (301). A sliding plate (303) is threadedly connected to the outer surface of the second screw (302). The sliding plate (303) is fixedly connected to the bottom of the clamping plate (203). The sliding plate (303) is slidably connected to the slide groove (202). A handle (304) is fixedly connected to the end of the second screw (302).

5. The sensitivity calibration device for sampling detection of a displacement sensor according to claim 4, characterized in that, The calibration component (4) includes a base (401), a slide rail (402) is fixedly connected to the top of the base (401), an electric slider (403) is slidably connected to the top of the slide rail (402), and a micrometer (404) is fixedly installed on the top of the electric slider (403).

6. The sensitivity calibration device for sampling detection of a displacement sensor according to claim 5, characterized in that, The base (401) is fixedly connected to the bottom of the mounting assembly (5).

7. The sensitivity calibration device for sampling detection of a displacement sensor according to claim 6, characterized in that, The mounting assembly (5) includes a square plate (501), the base (401) is fixedly connected to the top of the square plate (501), the top of the square plate (501) is provided with a screw hole (502), the screw hole (502) is internally threaded with a bolt (503), the square plate (501) is fixedly connected to a mounting plate (504) by the bolt (503), the screw cylinder (101) is rotatably connected to the mounting plate (504), and the fixing cylinder (104) is fixedly connected to the square plate (501).

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