Sensor stability test equipment
By using standard springs and driving mechanism extrusion testing methods in sensor stability testing equipment, the impact damage problem of pressure sensors in the prior art is solved, and a more stable and reliable test effect is achieved.
Patent Information
- Application Number
- CN202421612935.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-09
AI Technical Summary
When detecting pressure sensors, existing testing devices cause damage to the sensor through frequent impacts, affecting their subsequent detection and use.
A sensor stability testing device is designed, using standard springs and driving mechanisms to achieve extrusion testing of the sensor, and changing the telescopic length of the standard spring through reciprocating motion to avoid impact on the sensor.
The damage to the pressure sensor is reduced, the reliability of the test and the stability of the sensor are improved, and the pressure peak can be changed by adjusting the position of the slider, which is suitable for testing under different pressures.
Smart Images
Figure CN222866122U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of testing equipment, and in particular relates to a sensor stability testing device. Background Art
[0002] A pressure sensor is a device or apparatus that can sense pressure signals and convert them into usable output electrical signals according to certain rules. A pressure sensor is usually composed of a pressure sensitive element and a signal processing unit. According to different test pressure types, pressure sensors can be divided into gauge pressure sensors, differential pressure sensors and absolute pressure sensors. After design and production, pressure sensors need to undergo fatigue resistance and life tests.
[0003] The commonly used test device, during testing, drives the impact end to move back and forth. The impact end acts on the sensor, and the sensor detects the pressure output signal. The stability of its output signal reflects its stability during operation. Since the pressure sensor needs to be impacted frequently during the test, the pressure sensor is greatly damaged after the test, which will affect the subsequent detection and use of the pressure sensor. Utility Model Content
[0004] The utility model aims to provide a sensor stability testing device, which will not cause impact to the pressure sensor during the test, and reduce the damage to the pressure sensor during the test, so as to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sensor stability testing device, including a mounting frame and a sliding rod, there are two sliding rods, the two sliding rods are fixedly connected to one side of the top of the mounting frame, a mounting mechanism for installing the sensor is slidably connected between the two sliding rods, a driving mechanism for driving the mounting mechanism to perform reciprocating motion is provided on the other side of the top of the mounting frame, and a standard spring for squeezing the sensor is fixedly connected to one end of the mounting frame.
[0006] Furthermore, the mounting frame includes a U-shaped plate and a Z-shaped plate, the Z-shaped plate is fixedly connected to the top of the U-shaped plate, the sliding rod is fixedly connected to the top of the Z-shaped plate, and a back plate is fixedly connected to one side of the top of the U-shaped plate.
[0007] Furthermore, the driving mechanism includes a disc rotatably connected to one side of the back plate, one side of the disc is fixedly connected to a T-shaped slide rail, one side of the T-shaped slide rail is provided with equidistantly distributed threaded holes, a slider is slidably connected to the T-shaped slide rail, a through hole is opened on the surface of the slider, a screw is provided inside the through hole, and one end of the screw is threadedly connected to the inside of one of the threaded holes.
[0008] Furthermore, one side of the slider is fixedly connected to a mounting shaft, the outer wall of the mounting shaft is rotatably connected to a sleeve via a bearing, the side wall of the sleeve is fixedly connected to a connecting rod, one end of the connecting rod is fixedly connected to a shaft cylinder, one side of the back plate is fixedly connected to a reduction motor, and the output shaft of the reduction motor is fixedly connected to one side of the disc.
[0009] Furthermore, the mounting mechanism includes two sliding cylinders respectively slidably connected to the two sliding rods, a connecting plate is fixedly connected between the two sliding cylinders, one end of the connecting plate is fixedly connected to a sensor fixture for mounting the sensor, and the shaft cylinder is rotatably connected to the other end of the connecting plate through a rotating shaft.
[0010] Furthermore, one end of the standard spring is fixedly connected to one end of the inner side of the U-shaped plate, and the standard spring is arranged corresponding to the sensor fixture.
[0011] Furthermore, one end of the standard spring is fixedly connected with a circular plate.
[0012] Compared with the prior art, the utility model has the following beneficial effects: during testing, by driving the installation mechanism to move back and forth, the telescopic length of the standard spring is changed, thereby changing the pressure of the standard spring on the pressure sensor; since one end of the standard spring is always in contact with one end of the pressure sensor, it will not cause impact on the pressure sensor, thereby reducing damage to the pressure sensor during testing; the peak value of the pressure sensor can be changed by adjusting the position of the slider, which is convenient for testing the pressure sensor under different pressures. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0014] Figure 2 It is a front view of the utility model;
[0015] Figure 3 It is a front cross-sectional view of the utility model;
[0016] Figure 4 For this utility model Figure 2 Section view of the AA plane.
[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0018] 1. Mounting frame; 11. U-shaped plate; 12. Z-shaped plate; 13. Back plate; 2. Driving mechanism; 21. Disc; 22. T-shaped slide rail; 23. Threaded hole; 24. Slider; 25. Screw; 26. Mounting shaft; 27. Sleeve; 28. Connecting rod; 29. Shaft cylinder; 210. Reducer motor; 3. Mounting mechanism; 32. Slide cylinder; 33. Connecting plate; 34. Sensor fixture; 4. Standard spring; 41. Round plate; 5. Sliding rod. DETAILED DESCRIPTION
[0019] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.
[0020] like Figure 1 and 2 As shown, a sensor stability testing device includes a mounting frame 1 and a sliding rod 5. There are two sliding rods 5, and the two sliding rods 5 are fixedly connected to one side of the top of the mounting frame 1. A mounting mechanism 3 for mounting a sensor is slidably connected between the two sliding rods 5. A driving mechanism 2 for driving the mounting mechanism 3 to perform reciprocating motion is provided on the other side of the top of the mounting frame 1. A standard spring 4 for squeezing the sensor is fixedly connected to one end of the mounting frame 1. The mounting frame 1 includes a U-shaped plate 11 and a Z-shaped plate 12. The Z-shaped plate 12 is fixedly connected to the top of the U-shaped plate 11. The sliding rods 5 are fixedly connected to the top of the Z-shaped plate 12. A back plate 13 is fixedly connected to one side of the top of the U-shaped plate 11.
[0021] According to the above structure, when testing the pressure sensor, the pressure sensor is placed at one end of the mounting mechanism 3, and one end of the standard spring 4 is in contact with one end of the pressure sensor. The mounting mechanism 3 is driven to reciprocate by the driving mechanism 2, thereby changing the telescopic length of the standard spring 4 and changing the pressure on the pressure sensor. Since the stroke of each reciprocating motion of the mounting mechanism 3 is consistent, the peak pressure it is subjected to is also the same. During the test, the stability of the pressure sensor can be detected by observing the change in the peak value of the observer. Moreover, since one end of the standard spring 4 is always in contact with one end of the pressure sensor, it will not cause impact on the pressure sensor, thereby reducing damage to the pressure sensor during testing.
[0022] like Figure 1-4As shown, the driving mechanism 2 includes a disc 21 rotatably connected to one side of the back plate 13, a T-shaped slide rail 22 is fixedly connected to one side of the disc 21, and threaded holes 23 equidistantly distributed are arranged on one side of the T-shaped slide rail 22, a slider 24 is slidably connected to the T-shaped slide rail 22, a through hole is opened on the surface of the slider 24, a screw 25 is arranged inside the through hole, one end of the screw 25 is threadedly connected to the inside of one of the threaded holes 23, a mounting shaft 26 is fixedly connected to one side of the slider 24, and a sleeve 27 is rotatably connected to the outer wall of the mounting shaft 26 through a bearing, A connecting rod 28 is fixedly connected to the side wall of the sleeve 27, one end of the connecting rod 28 is fixedly connected to a shaft cylinder 29, one side of the back plate 13 is fixedly connected to a reduction motor 210, the output shaft of the reduction motor 210 is fixedly connected to one side of the disc 21, the mounting mechanism 3 includes two slide cylinders 32 respectively slidably connected to the two slide rods 5, a connecting plate 33 is fixedly connected between the two slide cylinders 32, one end of the connecting plate 33 is fixedly connected to a sensor fixture 34 for mounting a sensor, and the shaft cylinder 29 is rotatably connected to the other end of the connecting plate 33 via a rotating shaft.
[0023] According to the above structure, during the test, the pressure sensor is installed inside the sensor fixture 34, and the reduction motor 210 is used to drive the disc 21 to rotate, thereby driving the slider 24 to rotate around the axis of the disc 21. Through the transmission of the connecting rod 28, the connecting plate 33 is pulled to move back and forth along the sliding rod 5. When it is necessary to adjust the pressure peak value of the pressure sensor during the test, unscrew the screw 25, adjust the position of the slider 24 and fix it again.
[0024] like Figure 1 As shown, one end of the standard spring 4 is fixedly connected to one end of the inner side of the U-shaped plate 11 , the standard spring 4 is arranged corresponding to the sensor fixture 34 , and one end of the standard spring 4 is fixedly connected to a circular plate 41 .
[0025] According to the above structure and Hooke's law F=KX, when the standard spring 4 is compressed, the elastic force it generates is proportional to the distance it is compressed. Therefore, when the pressure sensor performs regular reciprocating motion, the pressure generated by the standard spring 4 on it also changes regularly. During testing, one end of the circular plate 41 contacts the pressure sensor for easy testing.
[0026] The working principle of the utility model is as follows: when testing the pressure sensor, the pressure sensor is placed at one end of the mounting mechanism 3, one end of the standard spring 4 is in contact with one end of the pressure sensor, and the mounting mechanism 3 is driven to reciprocate by the driving mechanism 2, thereby changing the telescopic length of the standard spring 4 and changing the pressure on the pressure sensor. Since the stroke of each reciprocating motion of the mounting mechanism 3 is consistent, the pressure peak value it is subjected to is also the same. During the test, the stability of the pressure sensor can be detected by observing the change of the peak value of the instrument, and since one end of the standard spring 4 is always in contact with one end of the pressure sensor, the pressure sensor will not be affected. To avoid impact, the damage to the pressure sensor during testing is reduced. During testing, the pressure sensor is installed inside the sensor fixture 34, and the reduction motor 210 is used to drive the disc 21 to rotate, thereby driving the slider 24 to rotate around the axis of the disc 21. Through the transmission of the connecting rod 28, the connecting plate 33 is pulled to move back and forth along the slide rod 5. According to Hooke's law F=KX, when the standard spring 4 is compressed, the elastic force it generates is proportional to the compressed distance. Therefore, when the pressure sensor makes regular reciprocating motion, the pressure generated by the standard spring 4 on it also changes regularly. During testing, one end of the circular plate 41 is in contact with the pressure sensor for easy testing.
[0027] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.
Claims
1. A sensor stability testing device, comprising a mounting frame (1) and a sliding rod (5), characterized in that: There are two slide rods (5), and both slide rods (5) are fixedly connected to one side of the top of the mounting frame (1). A mounting mechanism (3) for mounting a sensor is slidably connected between the two slide rods (5). A driving mechanism (2) for driving the mounting mechanism (3) to perform reciprocating motion is provided on the other side of the top of the mounting frame (1). A standard spring (4) for squeezing the sensor is fixedly connected to one end of the mounting frame (1).
2. A sensor stability testing device according to claim 1, characterized in that: The mounting frame (1) comprises a U-shaped plate (11) and a Z-shaped plate (12); the Z-shaped plate (12) is fixedly connected to the top of the U-shaped plate (11); the sliding rod (5) is fixedly connected to the top of the Z-shaped plate (12); and a back plate (13) is fixedly connected to one side of the top of the U-shaped plate (11).
3. A sensor stability testing device according to claim 2, characterized in that: The driving mechanism (2) comprises a disc (21) rotatably connected to one side of a back plate (13); a T-shaped slide rail (22) is fixedly connected to one side of the disc (21); threaded holes (23) are arranged at equal intervals on one side of the T-shaped slide rail (22); a slider (24) is slidably connected to the T-shaped slide rail (22); a through hole is provided on the surface of the slider (24); a screw (25) is arranged inside the through hole; one end of the screw (25) is threadedly connected to the inside of one of the threaded holes (23).
4. A sensor stability testing device according to claim 3, characterized in that: One side of the slider (24) is fixedly connected to a mounting shaft (26); the outer wall of the mounting shaft (26) is rotatably connected to a sleeve (27) via a bearing; the side wall of the sleeve (27) is fixedly connected to a connecting rod (28); one end of the connecting rod (28) is fixedly connected to a shaft cylinder (29); one side of the back plate (13) is fixedly connected to a reduction motor (210); and the output shaft of the reduction motor (210) is fixedly connected to one side of the disc (21).
5. A sensor stability testing device according to claim 4, characterized in that: The mounting mechanism (3) comprises two slide cylinders (32) respectively slidably connected to the two slide rods (5); a connecting plate (33) is fixedly connected between the two slide cylinders (32); a sensor fixture (34) for mounting a sensor is fixedly connected to one end of the connecting plate (33); and the shaft cylinder (29) is rotatably connected to the other end of the connecting plate (33) via a rotating shaft.
6. A sensor stability testing device according to claim 5, characterized in that: One end of the standard spring (4) is fixedly connected to one end of the inner side of the U-shaped plate (11), and the standard spring (4) and the sensor fixture (34) are arranged correspondingly.
7. A sensor stability testing device according to claim 6, characterized in that: One end of the standard spring (4) is fixedly connected to a circular plate (41).