Portable displacement sensor calibration device

Abstract

The utility model discloses a portable displacement sensor calibration device comprising a support, two ends of the support are respectively provided with a sensor installation plate and a measurement installation plate, the sensor installation plate is provided with a measured displacement sensor, the measurement installation plate is provided with a measurement member, and a calibration connection rod is arranged between the measurement member and the displacement sensor. One end of the calibration connecting rod is in contact with the measuring piece, the other end of the calibration connecting rod is in contact with the measured displacement sensor, the calibration connecting rod is movably connected to the support, so that the distance between the calibration connecting rod and the measured displacement sensor can be changed, and the measuring piece measures the displacement of the calibration connecting rod; through the above mode, the calibration efficiency of the displacement sensor can be improved, and the displacement sensor can be quickly and conveniently calibrated in advance.

Description

Technical Field

[0001] This utility model relates to the field of measurement and calibration technology, and in particular to a portable displacement sensor calibration device. Background Technology

[0002] Displacement sensors, as key components in industrial detection and control, are widely used in machinery manufacturing, construction engineering, and automation equipment. Their measurement accuracy directly affects system performance. Currently, commonly used eddy current, linear displacement, laser, and Hall effect displacement sensors require calibration to determine the correspondence between the output signal and the actual displacement before being put into use. However, traditional calibration methods must be completed in actual application scenarios, facing significant bottlenecks, such as: limited on-site installation space restricting operation; complex environmental interference (such as vibration and electromagnetic noise) affecting calibration stability; and the need for repeated distance adjustments and manual data recording at multiple calibration points, resulting in a cumbersome and inefficient process. Existing calibration devices are mostly limited to specific sensors or fixed scenarios, lacking versatility and portability, making it difficult to meet the requirements of high precision and rapid multi-point calibration. There is an urgent need for a device that is convenient and quick for on-site calibration. Utility Model Content

[0003] The main technical problem solved by this utility model is to provide a portable displacement sensor calibration device, which can improve the calibration efficiency of displacement sensors and enable the displacement sensors to be calibrated quickly and conveniently in advance.

[0004] To solve the above-mentioned technical problems, the present invention provides a portable displacement sensor calibration device, comprising: a bracket, with a sensor mounting plate and a measuring mounting plate respectively disposed at both ends of the bracket; a displacement sensor to be measured is mounted on the sensor mounting plate, and a measuring element is mounted on the measuring mounting plate; a calibration connecting rod is disposed between the measuring element and the displacement sensor; one end of the calibration connecting rod contacts the measuring element, and the other end of the calibration connecting rod contacts the displacement sensor to be measured; the calibration connecting rod is movably connected to the bracket, thereby changing the distance between the calibration connecting rod and the displacement sensor to be measured; and the measuring element measures the displacement of the calibration connecting rod.

[0005] Preferably, one end of the sensor mounting plate is fixedly connected to the bracket, and the other end of the sensor mounting plate has a mounting threaded hole. The threaded post at the rear end of the displacement sensor being measured is threadedly connected to the mounting threaded hole, thereby adjusting the distance of the displacement sensor being measured relative to the calibration connecting rod.

[0006] Preferably, a first positioning seat is fixedly connected to the bracket, a calibration connecting rod passes through the first positioning seat, and the calibration connecting rod is threadedly engaged with the first positioning seat.

[0007] Preferably, the calibration connecting rod is provided with an adjustment disc, and the calibration connecting rod is rotated by rotating the adjustment disc.

[0008] Preferably, the measuring instrument is a dial indicator.

[0009] Preferably, one end of the measuring mounting plate is fixedly connected to the bracket, and the other end of the measuring mounting plate has a mounting hole through which the measuring probe passes, and the measuring probe is mounted on the measuring mounting plate through the mounting hole.

[0010] Preferably, a sensing disk is provided at the end of the calibration connecting rod near the displacement sensor under test, and the sensing disk is brought into contact with the connector under test by moving the calibration connecting rod.

[0011] Preferably, it also includes a second positioning seat, which is disposed between the first positioning seat and the measuring mounting plate, and the end of the calibration connecting rod near the measuring component slides in cooperation with the second positioning seat.

[0012] The advantages of this invention are: by cooperating with the calibration connecting rod and the measuring component, the displacement of the calibration connecting rod can be accurately controlled, thereby quickly and conveniently completing multi-point calibration of the displacement sensor. Furthermore, it is portable and unaffected by the space constraints of the practical environment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] The components in the attached diagram are labeled as follows:

[0015] 1. Bracket; 2. Sensor mounting plate; 3. Measurement mounting plate; 4. T-slot; 5. Calibration connecting rod; 6. Mounting threaded hole; 7. First positioning seat; 8. Adjustment plate; 9. Mounting hole; 10. Sensing plate; 11. Second positioning seat. Detailed Implementation

[0016] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0017] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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.

[0018] 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 at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0019] 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 fixed 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0021] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise specified, physical quantities in formulas should be understood as basic quantities of SI base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0023] Example:

[0024] refer to Figure 1 A portable displacement sensor calibration device includes: a bracket 1, with a sensor mounting plate 2 and a measuring mounting plate 3 respectively mounted at both ends of the bracket 1. A T-shaped groove 4 can be formed on the bracket 1, allowing the sensor mounting plate 2 and the measuring mounting plate 3 to be mounted on the bracket 1 via the T-shaped groove 4 and bolts, and facilitating adjustment of their positions on the bracket 1. Alternatively, the sensor mounting plate 2 and the measuring mounting plate 3 can be welded to the bracket 1 for fixed positioning. The sensor mounting plate 2 is equipped with the displacement sensor to be measured, and the measuring mounting plate 3 is equipped with a measuring element, which can be a dial indicator. A calibration connecting rod 5 is provided between the measuring element and the displacement sensor. One end of the calibration connecting rod 5 contacts the measuring element, and the other end contacts the displacement sensor to be measured. The calibration connecting rod 5 is movably connected to the bracket 1, thereby changing the distance between the calibration connecting rod 5 and the displacement sensor to be measured. The measuring element measures the displacement of the calibration connecting rod 5.

[0025] When installing the measuring component, it is required that the measuring component and the calibration connecting rod 5 be in physical contact. Adjust the measuring component and zero it. Then, according to the calibration point required by the displacement sensor being measured, move the calibration connecting rod 5 to adjust the distance between the displacement sensor and the calibration connecting rod 5. At each defined distance (the sensing distance is displayed on the measuring component), use a multimeter to measure the voltage at the output terminal of the displacement sensor and record the voltage corresponding to the distance. By measuring multiple sensing distances and simultaneously recording the output voltage of the displacement sensor, the calibration of the displacement sensor is completed.

[0026] refer to Figure 1One end of the sensor mounting plate 2 is fixedly connected to the bracket 1, and the other end of the sensor mounting plate 2 has a mounting threaded hole 6. The threaded post at the rear end of the displacement sensor being measured is threadedly connected to the mounting threaded hole 6, thereby stably and accurately adjusting the distance of the displacement sensor being measured relative to the calibration connecting rod 5. A first positioning seat 7 is fixedly connected to the bracket 1, and the calibration connecting rod 5 passes through the first positioning seat 7. The calibration connecting rod 5 is threadedly engaged with the first positioning seat 7. By rotating the calibration connecting rod 5, the position of the calibration connecting rod 5 is adjusted. Combined with the reading of the measuring element, the position of the end of the calibration connecting rod 5 that contacts the displacement sensor is at different sensing distances, thereby completing the recording of the output voltage of the displacement sensor at multiple sensing distances and completing the calibration of the displacement sensor.

[0027] refer to Figure 1 To facilitate the rotation of the calibration connecting rod 5, an adjustment disc 8 is fixedly connected to the calibration connecting rod 5. By rotating the adjustment disc 8, the calibration connecting rod 5 can be rotated, thereby changing the position of the calibration connecting rod 5.

[0028] refer to Figure 1 One end of the measuring mounting plate 3 is fixedly connected to the bracket 1, and the other end of the measuring mounting plate 3 is provided with a mounting hole 9 for the measuring probe to pass through, so that the measuring probe can contact the calibration connecting rod 5. The measuring component can be installed on the measuring mounting plate 3 through the mounting hole 9.

[0029] refer to Figure 1 The calibration connecting rod 5 is fixedly connected to the sensing disk 10 at one end near the displacement sensor being measured. By moving the calibration connecting rod 5, the sensing disk 10 is brought into contact with the displacement sensor being measured. The area of ​​one side of the sensing disk 10 is larger than the area of ​​one end of the calibration connecting rod 5, so that it can make more stable contact with the displacement sensor.

[0030] refer to Figure 1 To ensure the stability of the calibration connecting rod 5 when it contacts the measuring rod of the measuring component, a second positioning seat 11 is also included. The second positioning seat 11 is installed between the first positioning seat 7 and the measuring mounting plate 3. The second positioning seat 11 has a sliding hole that cooperates with the calibration connecting rod 5. The end of the calibration connecting rod 5 near the measuring component slides in cooperation with the sliding hole of the second positioning seat 11, thereby supporting the stability of the position of one end of the calibration connecting rod 5 through the second positioning seat 11.

[0031] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A portable displacement sensor calibration device, characterized by, The utility model relates to a kind of displacement sensor calibration device, including: Support (1), the both ends of the support (1) are respectively provided with sensor mounting plate (2) and measurement mounting plate (3), the displacement sensor to be measured is installed on the sensor mounting plate (2), the measurement mounting plate (3) is installed with measuring piece, and the measuring piece is provided with calibration connecting rod (5) between displacement sensor, one end of the calibration connecting rod (5) is in contact with measuring piece, the other end of the calibration connecting rod (5) is in contact with the displacement sensor to be measured, the calibration connecting rod (5) is movably connected on support (1), so that the distance between calibration connecting rod (5) and the displacement sensor to be measured can be changed, and the displacement of calibration connecting rod (5) is measured by the measuring piece.

2. The portable displacement sensor calibration device of claim 1, wherein: One end of the sensor mounting plate (2) is fixedly connected with the support (1), and the other end of the sensor mounting plate (2) is provided with a mounting threaded hole (6), and the threaded column at the rear end of the displacement sensor to be measured is threadedly connected with the mounting threaded hole (6), so as to adjust the distance of the displacement sensor to be measured relative to the calibration connecting rod (5).

3. A portable displacement sensor calibration apparatus according to claim 1 or 2, wherein: The support (1) is fixedly connected with a first positioning seat (7), the calibration connecting rod (5) passes through the first positioning seat (7), and the calibration connecting rod (5) is threadedly connected with the first positioning seat (7).

4. The portable displacement sensor calibration device of claim 1, wherein: An adjusting disc (8) is arranged on the calibration connecting rod (5), and the calibration connecting rod (5) is rotated by rotating the adjusting disc (8).

5. The portable displacement sensor calibration device of claim 1, wherein: The measuring piece is a micrometer.

6. A portable displacement sensor calibration apparatus according to claim 5, wherein: One end of the measurement mounting plate (3) is fixedly connected with the support (1), and the other end of the measurement mounting plate (3) is provided with a mounting hole (9) through which the measuring head of the measuring piece passes, and the measuring piece is mounted on the measurement mounting plate (3) through the mounting hole (9).

7. The portable displacement sensor calibration device of claim 1, wherein: The end of the calibration connecting rod (5) close to the displacement sensor to be measured is provided with a sensing disc (10), and the sensing disc (10) is in contact with the measured connector by moving the calibration connecting rod (5).

8. The portable displacement sensor calibration device of claim 1, wherein: Further comprising a second positioning seat (11), the second positioning seat (11) is arranged between the first positioning seat (7) and the measurement mounting plate (3), and the end of the calibration connecting rod (5) close to the measuring piece is slidably connected with the second positioning seat (11).

Images