Miniaturized sensor high-low temperature rapid ranging device and equipment

Abstract

The utility model relates to a kind of miniaturization sensor high-low temperature fast ranging device and equipment, comprising: detection part and fixed part, the detection part includes mounting plate and differential rod, the side of mounting plate is provided with vertical board, the differential rod is worn in the vertical board;The fixed part includes positioning block, pressing plate and compression bolt, the positioning block is arranged on the surface of mounting plate, the surface of positioning block is equipped with placement groove, the axial direction of placement groove is coaxially arranged with the axial direction of differential rod;The pressing plate is arranged on the top of positioning block, and the pressing plate and the positioning block are detachably connected;The compression bolt extends into placement groove and is penetrated through the pressing plate.The utility model fixes sensor in placement groove by compression bolt, fixes sensor, realizes single-handed rotation spiral mechanism of differential rod in temperature box, can improve the efficiency of sensor high-low temperature distance detection, and also improves the accuracy of sensor distance detection.

Description

Technical Field

[0001] This utility model relates to the field of sensor testing fixture technology, and in particular to a miniaturized sensor high and low temperature rapid ranging device and equipment. Background Technology

[0002] The core working principle of inductive sensors is to detect the distance to metallic targets through electromagnetic induction. When the temperature of the sensor's environment changes, parameters such as the impedance of the internal coil and the permeability of the magnetic canister will change to varying degrees, thus affecting the sensor's detection distance. Therefore, high and low temperature distance testing of the sensor is a crucial step in ensuring its stable and reliable performance under different temperatures. Generally, the detection distance of the sensor is measured at -25℃, 0℃, 25℃, 50℃, and 70℃. Current testing methods involve placing the sensor in a high and low temperature test chamber and maintaining it at the set temperature for at least 30 minutes, then measuring the distance using a micrometer.

[0003] For high and low temperature distance testing of miniaturized sensors (sensing surface and housing diameter of only 4mm or 5mm), the characteristic parameters are greatly affected by temperature changes due to the small size of their internal coils and magnetic containers. Removing the sensor from the temperature chamber for distance measurement would introduce errors. While placing a micrometer inside the temperature chamber to test the sensor's trigger distance is difficult and inefficient, the tester must simultaneously hold the sensor in place and rotate the screw mechanism on the micrometer, due to the limited size of the chamber's side wall openings. Furthermore, it cannot ensure alignment between the sensor's sensing surface and the center of the target object on the micrometer, thus compromising the accuracy of the measured distance. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the shortcomings of low efficiency and poor accuracy of high and low temperature distance detection in existing small sensors.

[0005] To solve the above-mentioned technical problems, this utility model provides a miniaturized sensor for rapid high and low temperature ranging, comprising:

[0006] The detection unit includes a mounting plate and a differential rod. A vertical plate is provided on one side of the mounting plate, and the differential rod passes through the vertical plate.

[0007] The fixing part includes a positioning block, a pressure plate, and a clamping bolt. The positioning block is disposed on the surface of the mounting plate, and a placement groove is formed on the surface of the positioning block. The axial direction of the placement groove is coaxial with the axial direction of the differential rod. The pressure plate is disposed on the top of the positioning block, and the pressure plate is detachably connected to the positioning block. The clamping bolt passes through the pressure plate and extends into the placement groove.

[0008] In one embodiment of the present invention, the surface of the positioning block is provided with a limiting groove that cooperates with the pressure plate, and the axial direction of the limiting groove is perpendicular to the axial direction of the placement groove.

[0009] In one embodiment of this utility model, a pressure block is provided at one end of the clamping bolt near the placement groove.

[0010] In one embodiment of this utility model, a partition is provided on the side of the positioning block near the differential rod, and the partition is detachably connected to the positioning block.

[0011] In one embodiment of this utility model, a reference groove is formed on the surface of the partition plate near the differential rod.

[0012] In one embodiment of this utility model, a calibration head is provided at one end of the differential rod near the positioning block, and the calibration head is threadedly connected to the differential rod.

[0013] In one embodiment of this utility model, a locking bolt is provided on one side of the calibration head, and the locking bolt passes through the calibration head and abuts against the differential rod.

[0014] In one embodiment of this utility model, a detection block is provided at one end of the calibration head near the positioning block.

[0015] In one embodiment of this utility model, the cross-section of the placement groove is a V-shaped structure.

[0016] A miniaturized sensor high and low temperature rapid ranging device includes the aforementioned miniaturized sensor high and low temperature rapid ranging device.

[0017] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0018] This invention relates to a miniaturized sensor high and low temperature rapid distance measurement device and equipment. This invention uses clamping bolts to press the sensor into the placement groove to fix the sensor, and enables one-handed rotation of the differential rod screw mechanism in the temperature chamber. This improves the efficiency of distance detection of the sensor at high and low temperatures, and also improves the accuracy of the sensor distance detection. Attached Figure Description

[0019] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure of the central testing section;

[0022] Figure 3 for Figure 1 Schematic diagram of the middle fixing part;

[0023] Explanation of reference numerals in the accompanying drawings: 1. Detection section; 2. Fixing section; 3. Sensor; 11. Mounting plate; 12. Vertical plate; 13. Differential rod; 14. Calibration head; 15. Locking bolt; 16. Detection block; 21. Positioning block; 22. Pressure plate; 23. Tightening bolt; 24. Pressure block; 25. Partition plate; 211. Placement groove; 212. Limiting groove; 251. Reference groove. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0025] Reference Figures 1-3 As shown, this utility model discloses a miniaturized sensor for rapid high and low temperature ranging to solve the above-mentioned technical problems, comprising:

[0026] The detection unit 1 includes a mounting plate 11 and a differential rod 13. A vertical plate 12 is provided on one side of the mounting plate 11, and the differential rod 13 passes through the vertical plate 12.

[0027] The fixing part 2 includes a positioning block 21, a pressure plate 22, and a clamping bolt 23. The positioning block 21 is disposed on the surface of the mounting plate 11, and a placement groove 211 is formed on the surface of the positioning block 21. The axial direction of the placement groove 211 is coaxial with the axial direction of the differential rod 13. The pressure plate 22 is disposed on the top of the positioning block 21, and the pressure plate 22 is detachably connected to the positioning block 21. The clamping bolt 23 passes through the pressure plate 22 and extends into the placement groove 211.

[0028] In this invention, the fixing part 2 is used to fix the sensor 3. Specifically, the placement groove 211 on the surface of the positioning block 21 is used to place the sensor 3. The pressure plate 22 is fixed to the positioning block 21 by bolts and is located at the top of the placement groove 211. The clamping bolt 23 on the pressure plate 22 is used to fix the sensor 3. Specifically, the clamping bolt 23 passes through the pressure plate 22 and abuts against the sensor 3, fixing the sensor 3 in the placement groove 211. In the detection part 1, the upright plate 12 is used to fix the differential rod 13. The differential rod 13 passes through the upright plate 12 and is positioned directly opposite the placement groove 211. The end of the differential rod 13 away from the placement groove 211 is the adjustment end. In actual operation, the sensor 3 to be tested is placed in the placement groove 211, and the clamping bolt 23 is adjusted to fix it, ensuring that the sensor 3 will not loosen. Then, the entire device is placed in a temperature chamber, the temperature of the temperature chamber is adjusted and maintained for more than 30 minutes, and the adjustment end of the differential rod 13 is adjusted to determine the detection distance.

[0029] This invention uses clamping bolts 23 to press the sensor 3 into the placement groove 211, thereby fixing the sensor 3 and enabling the single-handed rotation of the screw mechanism of the differential rod 13 in the temperature chamber. This improves the efficiency of distance detection of the sensor 3 at high and low temperatures, and also improves the accuracy of distance detection of the sensor 3.

[0030] Furthermore, the surface of the positioning block 21 is provided with a limiting groove 212 that cooperates with the pressure plate 22, and the axial direction of the limiting groove 212 is perpendicular to the axial direction of the placement groove 211.

[0031] Specifically, in the actual assembly process, the pressure plate 22 is embedded in the limiting groove 212, and then the pressure plate 22 is fixed to the positioning block 21 by bolts. As a preferred embodiment of this utility model, the limiting groove 212 is set perpendicular to the placement groove 211.

[0032] Furthermore, a pressure block 24 is provided at one end of the clamping bolt 23 near the placement groove 211.

[0033] Specifically, since there are precision components inside the sensor 3, direct contact between the clamping bolt 23 and the sensor 3 can easily cause damage to the sensor 3. In this invention, a pressure block 24 is installed at the end of the clamping bolt 23. Preferably, the pressure block 24 is made of rubber, which can prevent the clamping bolt 23 from damaging the sensor 3.

[0034] Furthermore, a partition 25 is provided on the side of the positioning block 21 near the differential rod 13, and the partition 25 is detachably connected to the positioning block 21; a reference groove 251 is formed on the surface of the partition 25 near the differential rod 13.

[0035] Specifically, the partition 25 is positioned between the positioning block 21 and the upright plate 12, and its function is to fix the initial positions of the sensor 3 and the differential rod 13. In actual operation, the detection end of the sensor 3 is placed tightly against the partition 25, and after the clamping bolt 23 fixes the sensor 3, the differential rod 13 is adjusted to abut against the reference groove 251, bringing the entire device to a zero-state. The reference groove 251 can shorten the distance between the differential rod 13 and the sensor 3. Different depths of the reference groove 251 are selected according to different ranges of the sensor 3 to ensure the accuracy of the detection results. As a preferred embodiment of this invention, the partition 25 is made of plastic, allowing the signal from the sensor 3 to pass through the plastic plate to the differential rod 13, thereby enabling distance detection.

[0036] Furthermore, a calibration head 14 is provided at one end of the differential rod 13 near the positioning block 21, and the calibration head 14 is threadedly connected to the differential rod 13.

[0037] Specifically, during the testing process, the entire device needs to be placed inside a temperature chamber. Prolonged use will affect the accuracy of the differential rod 13, requiring periodic calibration. Calibration of the differential rod 13 can be achieved by adjusting the calibration head 14. In actual calibration, calibration is performed by adjusting the position of the calibration head 14. A locking bolt 15 is provided on one side of the calibration head 14, which passes through the calibration head 14 and abuts against the differential rod 13. After calibration, the calibration head 14 is locked in place using the locking bolt 15, thus securing the calibration head 14.

[0038] Furthermore, a detection block 16 is provided at one end of the calibration head 14 near the positioning block 21.

[0039] Specifically, the function of the detection block 16 in this invention is to receive the signal from the sensor 3. Preferably, the detection block 16 is made of metal and can sense the signal from the sensor 3.

[0040] As a preferred embodiment of this utility model, the cross-section of the placement groove 211 is a V-shaped structure. The V-shaped groove structure can position the sensor 3 from both sides, improve the stability of the sensor 3 clamping, and further ensure the accuracy of the detection results.

[0041] A miniaturized sensor high and low temperature rapid ranging device includes the miniaturized sensor high and low temperature rapid ranging device described in the above embodiments.

[0042] In summary, this utility model introduces a miniaturized sensor high and low temperature rapid distance measurement device and equipment. The specific operation steps are as follows: First, place the sensor 3 to be tested into the placement slot 211 and make the sensor 3 abut against the partition plate 25. Adjust the clamping bolt 23 to fix the sensor 3 in the placement slot 211, ensuring that the sensor 3 will not loosen. At the same time, adjust the differential rod 13 so that the detection block 16 abuts against the reference slot 251. Then, place the entire device into the temperature chamber, adjust the temperature of the temperature chamber, and maintain it for more than 30 minutes. Adjust the adjustment end of the differential rod 13 to determine the detection distance. This utility model uses the clamping bolt 23 to press the sensor 3 into the placement slot 211, thereby fixing the sensor 3. It also allows for one-handed rotation of the screw mechanism of the differential rod 13 in the temperature chamber, which can improve the efficiency of distance detection of the sensor 3 at high and low temperatures, and at the same time improve the accuracy of distance detection of the sensor 3.

[0043] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A miniaturized sensor for rapid high and low temperature ranging, characterized in that, include: The detection unit includes a mounting plate and a differential rod. A vertical plate is provided on one side of the mounting plate, and the differential rod passes through the vertical plate. The fixing part includes a positioning block, a pressure plate, and a clamping bolt. The positioning block is disposed on the surface of the mounting plate, and a placement groove is formed on the surface of the positioning block. The axial direction of the placement groove is coaxial with the axial direction of the differential rod. The pressure plate is disposed on the top of the positioning block, and the pressure plate is detachably connected to the positioning block. The clamping bolt passes through the pressure plate and extends into the placement groove.

2. The miniaturized sensor high and low temperature rapid ranging device according to claim 1, characterized in that: The surface of the positioning block is provided with a limiting groove that cooperates with the pressure plate, and the axis of the limiting groove is perpendicular to the axis of the placement groove.

3. The miniaturized sensor high and low temperature rapid ranging device according to claim 1, characterized in that: A pressure block is provided at one end of the clamping bolt near the placement groove.

4. The miniaturized sensor high and low temperature rapid ranging device according to claim 1, characterized in that: A partition is provided on the side of the positioning block near the differential rod, and the partition is detachably connected to the positioning block.

5. The miniaturized sensor high and low temperature rapid ranging device according to claim 4, characterized in that: A reference groove is formed on the surface of the partition plate on the side closest to the differential rod.

6. The miniaturized sensor high and low temperature rapid ranging device according to claim 1, characterized in that: A calibration head is provided at one end of the differential rod near the positioning block, and the calibration head is threadedly connected to the differential rod.

7. The miniaturized sensor high and low temperature rapid ranging device according to claim 6, characterized in that: A locking bolt is provided on one side of the calibration head, and the locking bolt passes through the calibration head and abuts against the differential rod.

8. The miniaturized sensor high and low temperature rapid ranging device according to claim 6, characterized in that: A detection block is provided at one end of the calibration head near the positioning block.

9. The miniaturized sensor high and low temperature rapid ranging device according to claim 1, characterized in that: The cross-section of the placement groove is V-shaped.

10. A miniaturized sensor-based high and low temperature rapid ranging device, characterized in that, Includes the miniaturized sensor high and low temperature rapid ranging device as described in any one of claims 1-9.

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