Position sensor testing device

Abstract

The utility model discloses a position sensor testing device, which comprises a mounting seat and a detection device, a guide part is arranged on the mounting seat, the detection device comprises a detection piece and a sliding piece, the sliding piece is in sliding fit with the guide part, and the detection piece is used for driving the sliding piece to move and detecting the displacement or position of the sliding piece; wherein one of the mounting seat and the sliding part is used for mounting a sensor to be detected, and the other one of the mounting seat and the sliding part is in induction fit with the sensing end of the sensor to be detected. The utility model aims to provide the position sensor testing device which is simple in structure, relatively low in cost and easy to operate, can solve the problem of precision testing before the position sensor is installed, and avoids abnormities or reworking in the later product use process.

Description

Technical Field

[0001] The present application relates to the field of sensor testing, and in particular to a position sensor testing device. Background Art

[0002] During the production of machine tools, sensors must be installed. Sensor accuracy is crucial to the accuracy and reliability of machine tools. Typically, sensor accuracy testing should be performed before installation to avoid anomalies or rework during subsequent product use. However, specialized test fixtures for sensors are currently rare in the industry, particularly those for position sensors.

[0003] Among the published documents, Chinese patent document CN221445103U proposes a test platform for contact displacement sensors in the field of integrated circuit design. However, in this technical solution, the test of the sensor depends on the operation of the data detection device inside the sensor to be tested. In addition, the test device needs to be equipped with a display device to display the operation results, and it also needs to be equipped with a drive member to drive the slider to move. It can be seen that the test platform needs to be equipped with a drive mechanism and a detection mechanism separately, which is costly, and the overall structure and assembly process are also relatively complicated. In addition, the test platform cannot be applied to sensors that do not have a data detection device inside, and its application scenarios are limited to the testing of certain specific sensors. Utility Model Content

[0004] The embodiments of the present application aim to provide a position sensor testing device that is simple in structure, relatively low in cost, and easy to operate.

[0005] The utility model provides a position sensor testing device, comprising: a mounting seat, on which a guide portion is provided; and a detection device, which comprises a detection member and a sliding member, the sliding member slidingly cooperating with the guide portion, and the detection member being used to drive the sliding member to move and detect the displacement or position of the sliding member; wherein, one of the mounting seat and the sliding member is used to mount a sensor to be tested, and the other of the mounting seat and the sliding member is inductively cooperating with a sensing end of the sensor to be tested.

[0006] In one embodiment of a position sensor testing device, the detection part includes a micrometer screw, which has a micrometer screw, a movable sleeve and a fixed sleeve. One end of the micrometer screw is connected to the sliding part, and the other end of the micrometer screw passes through the fixed sleeve and the movable sleeve in sequence and is connected to the movable sleeve. The external thread of the micrometer screw is spirally matched with the internal thread of the fixed sleeve. The movable sleeve is rotatably mounted on the outer periphery of the fixed sleeve. The rotation of the movable sleeve can drive the sliding part to move through the micrometer screw.

[0007] In one embodiment of the position sensor testing device, the detection part also includes a locking element, which is used to lock the protruding length of the micrometer screw relative to the fixed sleeve; the movable sleeve is provided with a movable scale along the circumferential direction, and the fixed sleeve is provided with a fixed scale along the axial direction. The movable scale and the fixed scale are used in conjunction with each other to detect the displacement or position of the sliding part.

[0008] In one embodiment of the position sensor testing device, the mounting base includes a fixedly mounted test plate, which is arranged opposite to a sliding member. The sliding member is used to mount the sensing end of the sensor to be tested, and the test plate and the sensing end of the sensor to be tested are inductively matched.

[0009] In one embodiment of a position sensor testing device, a sliding member has a first surface, a test plate has a second surface, the first surface and the second surface are opposite to each other and both the first surface and the second surface are perpendicular to the sliding direction of the sliding member, the first surface is located in front of or behind the sliding direction of the sliding member relative to the second surface, the sensing end of the sensor to be tested is located between the first surface and the second surface, and the second surface is inductively matched with the sensing end of the sensor to be tested.

[0010] In one embodiment of the position sensor testing device, the mounting seat has a ruler frame, the fixing sleeve is fixedly mounted on the ruler frame, the test plate is fixedly mounted on the ruler frame, or the ruler frame and the test plate are integrally formed.

[0011] In one embodiment of a position sensor testing device, the sliding member includes a sliding plate, which includes a horizontal portion and a vertical portion. The horizontal portion and the vertical portion are connected in an L-shape, the vertical portion is arranged opposite to the test plate, the vertical portion is used to install the sensing end of the sensor to be tested, and the horizontal portion can slide relative to the mounting seat and extends in a direction away from the test plate.

[0012] In one embodiment of the position sensor testing device, the guide portion includes a cylindrical slide rail or slide groove, and the sliding member is provided with a sliding structure adapted to the slide rail or slide groove.

[0013] In an embodiment of the position sensor testing device, a limiting portion is provided on the mounting seat, and the limiting portion is used to limit the sliding stroke of the sliding member relative to the guide portion.

[0014] In one embodiment of the position sensor testing device, the sensor testing device further comprises a power supply having a power connection port for electrically connecting to the sensor to be tested.

[0015] Compared with the existing technology, the beneficial effects of the present invention are as follows: this sensor is provided with a mounting base and a detection device, and displacement measurement is achieved by moving the detection device. The overall structure and assembly process of the test device are relatively simple, thereby supporting more stable testing of the position sensor test device, ensuring test accuracy to a certain extent, and can solve the problem of accuracy testing before the position sensor is installed, avoiding abnormalities or rework during the subsequent use of the product. In addition, the test platform can also be applied to sensors without internal data detection devices. Its application scenarios are not limited to the testing of certain specific sensors. It also has the following effects:

[0016] High precision: The tight sliding fit between the slider and the guide ensures the stability and accuracy of the slider during movement. This helps improve the accuracy of the sensor under test when detecting position changes.

[0017] Good flexibility: The design of the test device allows the sensor to be flexibly mounted on the mounting base or the sliding member, while the other is inductively coupled with the sensor's sensing end. This flexibility makes the test device adaptable to test position sensors of different types and specifications.

[0018] Easy to operate: By moving the sliding member with the detection member and detecting its displacement simultaneously, the performance of the position sensor can be quickly tested. This simple and easy operation method helps improve testing efficiency.

[0019] Wide range of applications: This test device is not only suitable for testing position sensors, but can also be used to test other sensors or devices that need to detect position changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure provided by the utility model;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure provided by the utility model at one viewing angle;

[0022] Description of reference numerals:

[0023] Mounting seat 1; guide portion 11;

[0024] Detection device 2; detection member 21; sliding member 22;

[0025] Micrometer screw 211; movable sleeve 212; fixed sleeve 213;

[0026] Locking element 214; ruler frame 215; first surface 221 of the sliding member;

[0027] Sensor 3;

[0028] Power supply 4; power connection port 41;

[0029] Test board 5; second surface 51 of the test board. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] It should be noted that when an element is referred to as being “disposed on” another element, it may be directly disposed on the other element or there may be an intermediate element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or there may be an intermediate element. When an element is referred to as being “mounted on” another element, it may be directly mounted on the other element or there may be an intermediate element.

[0032] Furthermore, it should be understood that all directional indications (such as up, down, left, right, center, etc.) in the embodiments are intended only to illustrate the relative positional relationships and movement of components in a specific posture (as shown in the figures). If the specific posture changes, the directional indications will also change accordingly. Terms such as "first" and "second" are used to distinguish different structural components. These terms are merely simplified descriptions for the convenience of describing the present invention and should not be construed as limiting the present invention.

[0033] The position sensor testing device provided by the present invention supports more stable testing of the position sensor testing device and ensures test accuracy to a certain extent by providing a device with low cost and relatively simple overall structure and assembly process.

[0034] See also Figures 1 to 2 The position sensor testing device shown consists of two main parts: a mounting base 1 and a detection device 2. Mounting base 1 is provided with a guide 11, which guides the movement of a sliding member 22, ensuring that it can slide smoothly along a predetermined path. The detection device 2 includes a detection member 21 and a sliding member 22. The sliding member 22 slidably engages with the guide 11, allowing the sliding member 22 to slide under the guidance of the guide 11. The detection member 21 is used to move the sliding member 22 and detect its displacement or position. When the detection member 21 is actuated, it can also move the sliding member 22.

[0035] Among them, one of the mounting base 1 and the sliding member 22 is used to install the sensor 3 to be tested, and the other of the mounting base 1 and the sliding member 22 is inductively matched with the sensing end of the sensor 3 to be tested. If the sensor 3 to be tested is installed on the mounting base 1, a certain part of the sliding member 22 will be inductively matched with the sensing end of the sensor 3 to be tested; if the sensor 3 to be tested is installed on the sliding member 22, a certain part on the mounting base 1 will be inductively matched with the sensing end of the sensor 3 to be tested. When the detection member 21 drives the sliding member 22 to move close to the sensing end of the sensor 3 to be tested, the sensor 3 to be tested lights up, and the reading of the detection member 21 can be recorded at this time to obtain the response accuracy of the sensor 3 to be tested. It can be understood that the above-mentioned sensor 3 to be tested is a position sensor. Through the above-mentioned solution, the problem of accuracy testing before the installation of the position sensor can be solved, and abnormalities or rework during the later use of the product can be avoided.

[0036] See also Figure 2 The position sensor testing device shown, in one embodiment of the present invention, uses a micrometer screw as the detection part 21. Through the rotation of the movable sleeve 212 and the internal precision mechanism, the extension length of the micrometer screw 211 is accurately controlled, thereby driving the sliding part 22 to move. The detection part 21 includes a micrometer screw, which has a micrometer screw 211, a movable sleeve 212 and a fixed sleeve 213. One end of the micrometer screw 211 is connected to the sliding part 22, and the other end of the micrometer screw 211 passes through the fixed sleeve 213 and the movable sleeve 212 in sequence and is connected to the movable sleeve 212. The external thread of the micrometer screw 211 is spirally matched with the internal thread of the fixed sleeve 213. The movable sleeve 212 is rotatably sleeved on the outer circumference of the fixed sleeve 213. The rotation of the movable sleeve 212 can drive the sliding part 22 to move through the micrometer screw 211. The introduction of the micrometer screw improves the measurement accuracy and stability of the test device and meets the demand for accurate measurement of small displacement changes.

[0037] In one embodiment of the present invention, a locking element 214 is added to the micrometer screw to lock the extension length of the micrometer screw 211. The locking element 214 is used to lock the extension length of the micrometer screw 211 relative to the fixed sleeve 213. At the same time, the movable sleeve 212 is provided with a movable scale along the circumference, and the fixed sleeve 213 is provided with a fixed scale along the axial direction. The movable scale and the fixed scale cooperate to detect the displacement or position of the slider 22, thereby visually displaying the displacement or position of the slider 22 through observation, thereby obtaining the response accuracy data of the sensor 3 to be measured. The locking element 214 ensures the position stability of the slider 22 during the measurement process, avoiding displacement errors. The scale setting makes the measurement results more intuitive and easy to read.

[0038] In one embodiment of the present invention, the mounting base 1 includes a fixedly mounted test plate 5. The test plate 5 is positioned opposite a slider 22. The slider 22 is used to mount the sensing end of the sensor 3 under test. The test plate 5 and the sensing end of the sensor 3 under test are inductively coupled. The test plate 5 and the slider 22 are designed to be positioned opposite each other to detect the response of the sensor 3 under test. This relative position simulates the operating environment of the sensor 3 in actual applications, allowing for an accurate assessment of the performance of the sensor 3 under test.

[0039] In one embodiment of the present invention, the slider 22 has a first surface 221, and the test board 5 has a second surface 51. The first surface 221 and the second surface 51 are opposite to each other and are both perpendicular to the sliding direction of the slider 22. The first surface 221 is located in front of or behind the second surface 51 in the sliding direction of the slider 22. The sensing end of the sensor 3 to be tested is located between the first surface 221 and the second surface 51. The second surface 51 and the sensing end of the sensor 3 to be tested are inductively matched. This design ensures proper inductive matching between the sensing end of the sensor 3 and the test board 5, improving the accuracy and reliability of the measurement.

[0040] In one embodiment of the present invention, the mounting base 1 further includes a ruler frame 215. The fixed sleeve 213 is fixedly mounted on the ruler frame 215. The test plate 5 is fixedly mounted on the ruler frame 215, or the ruler frame 215 and the test plate 5 are integrally formed. The ruler frame 215 also secures the fixed sleeve 213 of the micrometer screw and the test plate 5. The introduction of the ruler frame 215 makes the testing device more compact and stable, improving measurement accuracy and stability.

[0041] In one embodiment of the present invention, the sliding member 22 is designed to have a structure with a horizontal portion and a vertical portion. The vertical portion is used to install the sensing end of the sensor to be tested 3, and the horizontal portion is used to slide relative to the mounting base 1. Specifically, the sliding member 22 includes a sliding plate, and the sliding plate 5 includes a horizontal portion and a vertical portion. The horizontal portion and the vertical portion are connected in an L-shape. The vertical portion is arranged opposite to the test plate 5. The vertical portion is used to install the sensing end of the sensor to be tested 3, and the horizontal portion can slide relative to the mounting base 1 and extends in a direction away from the test plate 5. This design makes the sliding member 22 more stable during movement and facilitates the installation and removal of the sensor to be tested 3.

[0042] In one embodiment of the present invention, the guide portion 11 includes a cylindrical slide rail or slide groove, and the slide member 22 is provided with a sliding structure adapted to the slide rail or slide groove. This design ensures the stability and accuracy of the slide member 22 during movement, thereby improving the accuracy of measurement.

[0043] In one embodiment of the present invention, a limit portion is provided on the mounting base 1, which is used to limit the sliding stroke of the sliding member 22 relative to the guide portion 11. The provision of the limit portion prevents the sliding member 22 from exceeding a predetermined range during movement, thereby ensuring the safety and accuracy of the measurement.

[0044] In one embodiment of the present invention, the sensor testing device further includes a power supply 4 connected to the sensor 3 under test and a signal receiving device. The power supply 4 provides power to the sensor 3 under test and has a power connection port for electrically connecting to the sensor 3 under test. The signal receiving device is used to receive signals from the sensor 3 under test. The introduction of the power supply 4 module enables the testing device to conveniently connect and test different types of sensors 3 under test, improving the flexibility and applicability of the test. At the same time, it ensures the normal operation of the sensor 3 under test during the test process.

[0045] The working principle of this utility model:

[0046] The position sensor testing device uses a detection member 21 to move a slider 22 across a test board 5. The relative position change between slider 22 and the test board 5 triggers the sensor 3 under test. The sensor 3 detects this position change and emits a signal, such as lighting an indicator light, when a preset trigger condition is met. This operating principle is based on the relative motion between slider 22 and the test board 5 and the response of sensor 3 to this motion.

[0047] The following describes in detail how to use the sensor detection device:

[0048] 1. Preparation stage:

[0049] Install the test plate 5 and the slider 22, ensuring that the initial distance between them is accurate, and record the set distance.

[0050] Install the sensor 3 to a suitable position so as to detect the relative position change between the slider 22 and the test board 5. Connect the cable of the sensor 3 to the power supply 4 and the signal receiving device to ensure that the sensor 3 can work normally.

[0051] 2. Measurement phase:

[0052] The detection member 21 is used to drive the sliding member 22 to move a certain distance.

[0053] Observe whether the indicator light of the sensor 3 to be tested is on to determine whether the position change is accurately detected by the sensor 3 to be tested. Record the actual movement distance of the slider 22 and the response of the sensor 3 to be tested.

[0054] 3. Repeated measurement and error assessment:

[0055] The above measurement process is repeated multiple times to evaluate the repeatability of the sensor 3 to be tested.

[0056] After each measurement, the difference between the actual moving distance of the sliding member 22 and the initially set distance is calculated to obtain the error range of the sensor 3 to be measured.

[0057] The accuracy and eligibility of the sensor 3 to be tested are determined based on whether the error range is within the allowable error range of the sensor 3 to be tested and whether the response of the sensor 3 to be tested is stable and reliable.

[0058] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A position sensor testing device, characterized in that: include: A mounting seat (1), wherein a guide portion (11) is provided on the mounting seat (1); as well as A detection device (2), the detection device (2) comprising a detection member (21) and a sliding member (22), the sliding member (22) being in sliding engagement with the guide portion (11), the detection member (21) being used to drive the sliding member (22) to move and detect the displacement or position of the sliding member (22); One of the mounting seat (1) and the sliding member (22) is used to mount the sensor to be tested (3), and the other of the mounting seat (1) and the sliding member (22) is inductively matched with the sensing end of the sensor to be tested (3).

2. The position sensor testing device according to claim 1, wherein: The detection member (21) includes a screw micrometer, which has a micrometer screw (211), a movable sleeve (212) and a fixed sleeve (213). One end of the micrometer screw (211) is connected to the sliding member (22), and the other end of the micrometer screw (211) passes through the fixed sleeve (213) and the movable sleeve (212) in sequence and is connected to the movable sleeve (212). The external thread of the micrometer screw (211) is screw-matched with the internal thread of the fixed sleeve (213). The movable sleeve (212) is rotatably sleeved on the outer periphery of the fixed sleeve (213). The rotation of the movable sleeve (212) can drive the sliding member (22) to move through the micrometer screw (211).

3. The position sensor testing device according to claim 2, wherein: The detection member (21) further includes a locking element (214), and the locking element (214) is used to lock the extension length of the micrometer screw (211) relative to the fixed sleeve (213); the movable sleeve (212) is provided with a movable scale along the circumferential direction, and the fixed sleeve (213) is provided with a fixed scale along the axial direction, and the movable scale cooperates with the fixed scale to detect the displacement or position of the sliding member (22).

4. The position sensor testing device according to claim 2, wherein: The mounting base (1) includes a fixedly mounted test plate (5), the test plate (5) being arranged opposite to the sliding member (22), the sliding member (22) being used to mount a sensing end of a sensor to be tested (3), and the test plate (5) and the sensing end of the sensor to be tested (3) being inductively matched.

5. The position sensor testing device according to claim 4, wherein: The sliding member (22) has a first surface (221), and the test plate (5) has a second surface (51). The first surface (221) and the second surface (51) are opposite to each other and both the first surface (221) and the second surface (51) are perpendicular to the sliding direction of the sliding member (22). The first surface (221) is located in front of or behind the sliding direction of the sliding member (22) relative to the second surface (51). The sensing end of the sensor to be tested (3) is located between the first surface (221) and the second surface (51), and the second surface (51) is inductively matched with the sensing end of the sensor to be tested (3).

6. The position sensor testing device according to claim 4, wherein: The mounting seat (1) further comprises a ruler frame (215), the fixing sleeve (213) is fixedly mounted on the ruler frame (215), the test plate (5) is fixedly mounted on the ruler frame (215), or the ruler frame (215) and the test plate (5) are integrally formed.

7. The position sensor testing device according to claim 4, wherein: The sliding member (22) includes a sliding plate, the sliding plate includes a horizontal portion and a vertical portion, the horizontal portion and the vertical portion are connected to form an L-shape, the vertical portion is arranged opposite to the test plate (5), the vertical portion is used to install the sensing end of the sensor to be tested (3), the horizontal portion can slide relative to the mounting seat (1) and the horizontal portion extends in a direction away from the test plate (5).

8. The position sensor testing device according to any one of claims 1 to 7, characterized in that: The guide portion (11) includes a cylindrical slide rail or a slide groove, and the sliding member (22) is provided with a sliding structure adapted to the slide rail or the slide groove.

9. The position sensor testing device according to any one of claims 1 to 7, characterized in that: A limiting portion is provided on the mounting seat (1), and the limiting portion is used to limit the sliding stroke of the sliding member (22) relative to the guide portion (11).

10. The position sensor testing device according to any one of claims 1 to 7, characterized in that: The sensor testing device further comprises a power supply (4) connected to the sensor to be tested (3) and a signal receiving device, wherein the power supply (4) has a power connection port (41) for electrically connecting to the sensor to be tested (3), and the signal receiving device is used to receive a signal from the sensor to be tested (3).

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