Device for synchronously testing performance of multiple electromagnetic linear displacement sensors

Abstract

The invention relates to the technical field of displacement sensor detection, in particular to a device for synchronously detecting the performance of a plurality of electromagnetic linear displacement sensors, which comprises a base, a detection component and an eddy current bracket, a plurality of sensor mounting parts are uniformly arranged on the circular peripheral wall of the eddy current bracket, and the sensor mounting parts are used for detachably mounting a to-be-tested electromagnetic linear displacement sensor; the eddy current support is arranged corresponding to the position of the detection part, and the detection part rotates around the central axis to switch different detection positions, so that a plurality of electromagnetic linear displacement sensors to be detected on the eddy current support synchronously complete performance detection under different detection distances. According to the invention, the plurality of electromagnetic linear displacement sensors to be detected are simultaneously installed on the eddy current support, and the detection part rotates around the central shaft to switch different detection distances, so that the synchronous performance detection of the plurality of sensors is realized, the detection efficiency is improved, and the measurement consistency of the sensors under the same condition is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of displacement sensor detection, and particularly relates to a device for synchronously testing the performance of multiple electromagnetic linear displacement sensors. BACKGROUND

[0002] Electromagnetic linear displacement sensors are widely used in industrial automation, aerospace, automobile manufacturing and other fields due to their high precision, high reliability and good environmental adaptability. Although there are traditional testing devices that can test the performance of a single sensor, with the expansion of industrial production scale and the improvement of automation level, the use of multiple sensors has increased. The traditional testing method is inefficient and difficult to ensure consistency and collaboration. In the future, sensor performance testing devices will develop towards intelligence, integration and high precision. However, there are problems such as low efficiency, poor consistency and difficulty in anti-interference.

[0003] The existing detection device can only measure a single sensor at a fixed distance or a single position, and it is difficult to realize the synchronous performance evaluation of the sensor at different detection distances. In batch production or scientific research experiments, the performance of multiple sensors needs to be tested simultaneously. The traditional method is not only time-consuming, but also difficult to ensure the consistency of the detection conditions between sensors, thereby affecting the reliability of the test results. SUMMARY

[0004] (I) Invention purpose

[0005] The purpose of the present application is to provide a device for synchronously testing the performance of multiple electromagnetic linear displacement sensors, which simultaneously installs multiple sensors to be tested on an eddy current support, and uses a detection component to rotate around the central axis to switch different detection distances, thereby realizing synchronous performance testing of multiple sensors, improving detection efficiency, and ensuring the consistency of measurements of each sensor under the same conditions.

[0006] (II) Technical solution

[0007] To solve the above problems, the present application provides a device for synchronously testing the performance of multiple electromagnetic linear displacement sensors, comprising: a base, a detection component and an eddy current support.

[0008] The base is connected to the detection component, and the detection component is connected to the eddy current support.

[0009] The eddy current support is circular, and the circular outer wall of the eddy current support is uniformly provided with a plurality of sensor mounting portions, which are used for detachably mounting the electromagnetic linear displacement sensors to be tested.

[0010] The eddy current support is arranged corresponding to the position of the detection component, the detection component is used to provide a plurality of detection distances, the detection component switches different detection positions by rotating around the central axis, different detection positions correspond to different detection distances, so that a plurality of electromagnetic type line displacement sensors on the eddy current support complete performance test under different detection distances synchronously.

[0011] In another aspect of the present application, preferably, the detection component comprises a detection rotating part,

[0012] The detection rotating part can rotate around the central axis, the surface of the detection rotating part is provided with a plurality of groups of stepped structures, the detection rotating part provides a plurality of detection distances through the stepped structures, and the detection rotating part switches detection distances by rotating.

[0013] In another aspect of the present application, preferably, the detection rotating part is circular, the eddy current support is coaxially arranged with the detection rotating part, the probe end face of the electromagnetic type line displacement sensor to be tested on the eddy current support faces the detection rotating part and is opposite to the stepped structure.

[0014] In another aspect of the present application, preferably, the detection component further comprises a detection fixed part, the detection fixed part is sleeved on the inner periphery of the detection rotating part, the detection fixed part is rotationally connected with the detection rotating part, the detection fixed part is coaxially arranged with the eddy current support, and the detection fixed part is fixedly connected with the eddy current support.

[0015] In another aspect of the present application, preferably, the sensor mounting part comprises a groove and a connecting sheet, the groove is arranged on the circular outer peripheral wall of the eddy current support, two sides of the groove are provided with first connecting holes, the connecting sheet is provided with position corresponding second connecting holes, and the connecting sheet is fixedly connected with the eddy current support through the first connecting holes and the second connecting holes.

[0016] In another aspect of the present application, preferably, the detection position comprises an initial position, a minimum gap position, an intermediate gap position and a maximum gap position.

[0017] In another aspect of the present application, preferably, a fixing member is further included, the fixing member is fixedly connected with the base, the detection component is sleeved on the outer periphery of the fixing member, and the eddy current support abuts against one end of the fixing member.

[0018] In another aspect of the present application, preferably, the base is provided with a positioning groove, and the fixing member is connected with the base through the positioning groove.

[0019] Another aspect of the present application, preferably, the eddy current support is provided with a first fixing hole, the first fixing hole is arranged on the end face of the eddy current support, and the eddy current support is connected with the base through the first fixing hole.

[0020] Another aspect of the present application, preferably, the eddy current support is provided with a second fixing hole, the second fixing hole is arranged on the end face of the eddy current support, and the eddy current support is connected with the detection fixing part through the second fixing hole.

[0021] (III) beneficial effects

[0022] The above technical solutions of the present application have the following beneficial technical effects:

[0023] The present application realizes the detachable installation of the to-be-measured sensor by uniformly arranging a plurality of sensor mounting parts on the outer periphery of the circular eddy current support. The detection part is correspondingly arranged with the eddy current support, which can provide a plurality of detection distances, and different detection positions are switched by rotating around the central axis, so that each sensor completes performance testing under different detection distances, improves the detection efficiency, each sensor completes testing under the same detection condition, ensures the consistency and reliability of the measurement results, and effectively reduces the influence of human operation error and environmental difference on the results. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the overall structure of an embodiment of the present application;

[0025] Figure 2 is a detection part structure schematic diagram of an embodiment of the present application;

[0026] Figure 3 is an eddy current support structure schematic diagram of an embodiment of the present application;

[0027] REFERENCE NUMERALS:

[0028] 1: base, 110: positioning groove,

[0029] 2: detection part, 210: detection rotating part, 220: detection fixing part,

[0030] 3: eddy current support, 310: sensor mounting part, 311: groove, 312: connecting piece, 320: first fixing hole, 330: second fixing hole,

[0031] 4: fixing piece. DETAILED DESCRIPTION

[0032] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the embodiments and the accompanying drawings. It should be understood that the description is only exemplary but does not limit the scope of the present application. Moreover, in the following description, the description of the well-known structures and techniques is omitted to avoid unnecessary confusion of the concept of the present application.

[0033] The structural diagrams according to the embodiments of the present application are shown in the accompanying drawings. These drawings are not drawn to scale, in which some details are enlarged for the purpose of clarity and some details can be omitted. The shapes of various regions, layers and their relative sizes and positional relationships shown in the drawings are only exemplary, and in practice, they can be deviated due to manufacturing tolerances or technical limitations, and regions / layers with different shapes, sizes and relative positions can be additionally designed by those skilled in the art according to actual needs.

[0034] Obviously, the described embodiments are part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] In the description of the present application, it should be noted that the terms "first", "second", "third" are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0036] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0037] The present application will be described in more detail below with reference to the accompanying drawings. In each of the accompanying drawings, the same elements are denoted by similar reference numerals. Each part in the drawings is not drawn to scale for the purpose of clarity.

[0038] Embodiment one

[0039] A device for synchronously checking the performance of a plurality of electromagnetic type wire displacement sensors, Figure 1 The overall structural explosion diagram of one embodiment of the present application is shown as Figure 1 As shown, it comprises a base 1, a detection component 2 and an eddy current support 3. The base 1 serves as a bearing platform of the entire device and provides stable support. It can be made of metal or high-strength engineering plastic to ensure rotation or detection.

[0040] The base 1 is connected with the detection component 2, and the detection component 2 is connected with the eddy current support 3.

[0041] The eddy current support 3 is circular, and the outer circumferential wall of the eddy current support 3 is uniformly provided with a plurality of sensor mounting portions 310 for detachably mounting electromagnetic type line displacement sensors to be tested; the mounting mode can be screw connection, buckle connection or magnetic attraction type fixation, so as to quickly mount and dismount sensors of different types or models. The circular design of the eddy current support 3 ensures that the sensors can be equally distributed during rotation detection, so that the plurality of sensors can be synchronously tested under the same working condition.

[0042] The eddy current support 3 is provided in position corresponding to the detection component 2, and the detection component 2 is used to provide a plurality of detection distances, and the detection component 2 switches different detection positions by rotating around the center axis, so that different detection positions correspond to different detection distances, so that the plurality of electromagnetic type line displacement sensors to be tested on the eddy current support 3 can be synchronously tested under different detection distances. The detection component 2 is used to generate a plurality of detection distances, and the working principle is to switch different detection positions by rotating along the center axis, so as to change the relative distance between the sensor and the detection target. Each detection position corresponds to a specific detection distance, which can accurately simulate the working state of the sensor under different measurement scenes. The detection component 2 can adopt a mechanical rotating structure, a motor driving structure or a stepping motor control to realize high-precision angle adjustment and position repeated positioning.

[0043] In use, the operator only needs to install the electromagnetic type line displacement sensor to be tested on each sensor mounting portion 310 of the eddy current support 3, control the rotation of the detection component 2, and the rotation can be realized by a rotating mechanism or manually rotated, and the different detection positions can be switched by rotating, so as to test the performance of each sensor under different detection distances. Through the pre-set detection distance and rotation angle, automatic or semi-automatic testing can be realized.

[0044] Further, in the embodiment, Figure 2 The detection component structure schematic diagram of one embodiment of the application is shown in the figure, Figure 2 As shown in the figure, the detection component 2 includes a detection rotating portion 210,

[0045] The detection rotating part 210 can rotate around the central axis, and the surface of the detection rotating part 210 is provided with a plurality of groups of stepped structures. The detection rotating part 210 provides a plurality of detection distances through the stepped structures, and the detection distance is switched through rotation. Each group of stepped structures includes at least one stepped step, each stepped step extends in the radial direction and is distributed in a fan shape, and a plurality of groups of stepped steps are uniformly arranged around the central axis. The stepped steps of each group of stepped structures are sequentially provided with different heights or thicknesses, and adjacent stepped steps are arranged in series in the circumferential direction to form a ring-shaped stepped array structure. Through the rotation of the detection rotating part 210, the stepped steps with different heights can be sequentially corresponded to the measurement positions of the electromagnetic linear displacement sensors to be detected, thereby providing a plurality of detection distances and realizing the performance test of the sensors at different distances. In the embodiment, the detection positions include an initial position, a minimum gap position, an intermediate gap position, and a maximum gap position. The detection distance of the initial position is 0 mm, the detection distance of the maximum gap position is 1.2 mm, the detection distance of the intermediate gap position is 0.7 mm, and the detection distance of the minimum gap position is 0.2 mm.

[0046] The detection rotating part 210 is circular, the eddy current support 3 is coaxially arranged with the detection rotating part 210, and the probe end face of the electromagnetic linear displacement sensor to be detected on the eddy current support 3 faces the detection rotating part 210 and is opposite to the stepped structure. The detection rotating part 210 is circular as a whole, and the central axis coincides with the mounting reference axis of the device. The eddy current support 3 is also circular and coaxially arranged with the detection rotating part 210. Through coaxial arrangement, the plurality of electromagnetic linear displacement sensors to be detected mounted on the eddy current support 3 can be equally distributed in the circumferential direction, and always correspond to the stepped structure of the detection rotating part 210 during detection, thereby ensuring the symmetry and consistency when the detection distance is switched.

[0047] The probe end face of each sensor to be detected faces the surface of the detection rotating part 210 and is opposite to the stepped structure on the detection rotating part 210, that is, when the detection rotating part 210 is rotated and switched to different stepped step positions, the sensor probe end face always faces the corresponding stepped step detection face. In this way, each sensor can simultaneously obtain the corresponding detection result at different detection distances, thereby realizing the synchronous performance test of multiple sensors.

[0048] In a specific implementation, the eddy current support 3 and the detection rotating part 210 are kept at a certain distance, which can be designed according to the range of the sensor and the required detection accuracy. The stepped steps of the detection rotating part 210 are uniformly distributed in the circumferential direction, and each stepped step forms a different detection distance relative to the end face of the sensor probe. As the detection rotating part 210 rotates around the central axis, the end face of the sensor probe can sequentially detect the stepped steps of different heights, thereby completing performance detection of multiple detection distances in one complete rotation period.

[0049] The detection component 2 further comprises a detection fixed part 220, which is sleeved on the inner periphery of the detection rotating part 210, and the detection fixed part 220 is rotationally connected with the detection rotating part 210, the detection fixed part 220 is coaxially arranged with the eddy current support 3, and the detection fixed part 220 is fixedly connected with the eddy current support 3. The detection fixed part 220 is sleeved on the inner periphery of the detection rotating part 210, and the two are rotationally connected through a rotating pair structure. Specifically, the detection fixed part 220 is an inner ring structure, and the detection rotating part 210 is an outer ring structure. The detection fixed part 220 is inserted and sleeved in the inner periphery of the detection rotating part 210 along the radial direction, so that the detection rotating part 210 can freely rotate around the central axis relative to the detection fixed part 220, while the detection fixed part 220 remains stable and does not move. The detection fixed part 220 is coaxially arranged with the eddy current support 3 and fixedly connected with the eddy current support 3 through screws, welding or interference fit, etc., so as to ensure that the entire device maintains a stable coaxial relationship during detection. Through such coaxial arrangement, it is ensured that the probe end face of each electromagnetic wire displacement sensor installed on the eddy current support 3 can always accurately correspond to the stepped structure on the detection rotating part 210, avoiding detection distance errors caused by eccentricity or misalignment. In a specific implementation, the rotational connection between the detection fixed part 220 and the detection rotating part 210 can adopt various structural forms. For example, a rolling bearing, a sliding bearing or a wear-resistant bushing can be arranged at the contact position of the two to reduce friction resistance, improve rotation accuracy and prolong service life; at the same time, a positioning ring or a limiting slot can be arranged to prevent the detection rotating part 210 from producing radial swing or axial movement during rotation, thereby ensuring that the detection distance between the stepped steps and the sensor probe end face always remains stable.

[0050] Further, in the embodiment, Figure 3 The eddy current support structure schematic diagram of one embodiment of the application is shown as follows, Figure 3As shown, the sensor mounting portion 310 includes a groove 311 and a connecting piece 312, the groove 311 is provided on the circular peripheral wall of the eddy current support 3, and the groove 311 is provided with a first connecting hole on both sides, and the connecting piece 312 is provided with a second connecting hole corresponding in position, and the connecting piece 312 is fixedly connected with the eddy current support 3 through the first connecting hole and the second connecting hole. Each sensor mounting portion 310 includes a groove 311 and a connecting piece 312, which is used to realize the detachable installation and stable fixation of the electromagnetic type line displacement sensor to be measured. The groove 311 is opened on the circular peripheral wall of the eddy current support 3, and the shape of the groove 311 can be designed according to the size and shape of the sensor to be measured, which can be a rectangular groove, an arc-shaped groove or other structures matching the end surface of the sensor. The size of the groove 311 can keep the position stable after the sensor is inserted, and the sensor probe end surface can be accurately aligned with the stepped structure of the rotating part 210 at all times.

[0051] The first connecting hole is provided on both sides of the groove 311, which is used to provide a mechanical connection position with the connecting piece 312. The connecting piece 312 is independently provided, one side of which can be attached to the outer wall position of the groove 311, and a second connecting hole is opened at the corresponding position. The first connecting hole and the second connecting hole correspond to each other in spatial position, and they can be reliably connected by screws, bolts or pins. Through this structure design, the connecting piece 312 can firmly press the sensor installed in the groove 311 on the eddy current support 3, thereby realizing quick installation and stable fixation.

[0052] The groove 311 and the connecting piece 312 can be modularly designed according to different sensor models and specifications, that is, different specifications of sensors can be adapted by replacing connecting pieces 312 of different sizes, without the need to modify the entire eddy current support 3. This modular installation method ensures that the device has good versatility when facing various models of electromagnetic type line displacement sensors.

[0053] The eddy current support 3 is provided with a first fixing hole 320, and the first fixing hole 320 is provided on the end face of the eddy current support 3, and the eddy current support 3 is connected with the base 1 through the first fixing hole 320. The first fixing hole 320 can be distributed along the end face of the eddy current support 3, and the hole diameter is matched with the corresponding mounting hole on the base 1, and they are reliably fixed by screws, bolts or pins. Through this connection method, the eddy current support 3 can be stably installed on the base 1, and displacement or eccentricity will not occur due to rotation or vibration, thereby ensuring the structural stability and detection accuracy of the entire device during use.

[0054] The eddy current support 3 is provided with a second fixing hole 330 arranged on the end face of the eddy current support 3, and the eddy current support 3 is connected with the detection fixing part 220 through the second fixing hole 330. The second fixing hole 330 is also arranged on the end face of the eddy current support 3, and is designed to correspond to the mounting position of the detection fixing part 220. The second fixing hole 330 can be aligned with the mounting hole on the detection fixing part 220, and is fixed through connecting members such as screws, bolts or pins. Through the structure, the eddy current support 3 can be kept in a firm coaxial connection with the detection fixing part 220, so as to ensure that the detection fixing part 220 can form a stable overall structure with the eddy current support 3 when serving as an inner support reference member.

[0055] The eddy current support 3 can be reliably fixed with the base 1 through the first fixing hole 320 and stably connected with the detection fixing part 220 through the second fixing hole 330, thereby realizing the compactness and coaxiality of the overall structure of the device. Not only the anti-vibration ability and stability during the operation of the device are improved, but also the accurate relative positional relationship between the multiple electromagnetic type linear displacement sensors can be maintained during synchronous detection, thereby improving the accuracy and repeatability of performance detection.

[0056] Further, the embodiment also includes a fixing member 4 fixedly connected with the base 1, the detection member 2 is sleeved on the outer periphery of the fixing member 4, and the eddy current support 3 abuts against one end of the fixing member 4. The base 1 is provided with a positioning groove 110, and the fixing member 4 is connected with the base 1 through the positioning groove 110. The fixing member 4 is also used for overall positioning and auxiliary fixing. The fixing member 4 is fixedly connected with the base 1, and plays a role of bearing and positioning. The detection member 2 is entirely sleeved on the outer periphery of the fixing member 4, thereby realizing the constraint and support of the detection member 2 in structure. At the same time, one end of the eddy current support 3 abuts against the fixing member 4, thereby forming a reliable positioning stop during assembly, and ensuring that the eddy current support 3 cannot move in the axial direction. The base 1 is provided with a positioning groove 110 in advance, which can be an annular groove, a straight groove or a plurality of distributed groove structures, and the size and shape of the positioning groove 110 are matched with the lower end part of the fixing member 4. During installation, the fixing member 4 is inserted and embedded in the positioning groove 110, and is connected and fixed with the base 1 through screws, bolts or buckles. Not only the relative positional relationship between the fixing member 4 and the base 1 is ensured, but also the assembly accuracy is improved, so that the fixing member 4 can become the mounting reference of the entire detection member.

[0057] The detection member 2 is sleeved on the outer periphery of the fixing member 4, forming a sleeved support structure. Through the sleeving mode, the detection member 2 is stably supported in the radial direction, and can also rotate relatively around the central axis, which not only ensures the rotation flexibility, but also avoids the radial deviation of the detection member 2.

[0058] The present application realizes detachable installation of the sensors to be measured by uniformly arranging a plurality of sensor mounting portions on the outer periphery of the circular eddy current support. The detection components are arranged correspondingly to the eddy current support, can provide a plurality of detection distances, and switch different detection positions by rotating around the central axis, so that each sensor completes performance inspection under different detection distances synchronously, improves the detection efficiency, each sensor completes the test under the same detection condition, ensures the consistency and reliability of the measurement results, and effectively reduces the influence of human operation error and environmental difference on the results.

[0059] It should be understood that the above specific embodiments of the present application are only used for illustrative or explanatory purposes of the principles of the present application, and do not constitute a limitation on the present application. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present application shall be included in the protection scope of the present application. In addition, the appended claims of the present application are intended to cover all variations and modifications falling within the scope and boundary of the appended claims, or the equivalent forms of such scope and boundary.

[0060] In the above description, the technical details such as the patterning, etching, etc. of each layer are not described in detail. However, those skilled in the art should understand that the layers, regions, etc. with the required shape can be formed by various means in the prior art. In addition, those skilled in the art can also design methods that are not exactly the same as the methods described above in order to form the same structure.

[0061] The present application has been described above with reference to the embodiments thereof. However, these embodiments are only for illustrative purposes, and are not intended to limit the scope of the present application. The scope of the present application is defined by the appended claims and their equivalents. Without departing from the scope of the present application, those skilled in the art can make various substitutions and modifications, which should fall within the scope of the present application.

[0062] Although the embodiments of the present application have been described in detail, it should be understood that various changes, substitutions and modifications can be made to the embodiments of the present application without departing from the spirit and scope of the present application.

[0063] Obviously, the above embodiments are only examples for clear illustration, and are not a limitation on the embodiments. Based on the above description, those skilled in the art can make other different forms of changes or modifications. Here, it is not necessary or possible to exhaust all the embodiments. The obvious changes or modifications derived therefrom are still within the protection scope of the present application.

Claims

1. An apparatus for synchronously checking the performance of a plurality of electromagnetic wire displacement sensors, characterized in that The utility model relates to a kind of electromagnetic type line displacement sensor performance test device, including: Base (1), detection component (2) and eddy current support (3); The base (1) is connected with detection component (2), and the detection component (2) is connected with eddy current support (3); The eddy current support (3) is arranged as a circle, and the circular outer peripheral wall of the eddy current support (3) is uniformly provided with a plurality of sensor mounting portions (310), which are used for detachably mounting electromagnetic type line displacement sensors to be tested. The eddy current support (3) is arranged in position correspondence with the detection component (2), and the detection component (2) is used to provide a plurality of detection distances.

2. The apparatus for synchronously checking the performance of a plurality of electromagnetic wire displacement sensors according to claim 1, characterized in that The detection component (2) includes a detection rotating portion (210), The detection rotating portion (210) can rotate around a central axis, and the surface of the detection rotating portion (210) is provided with a plurality of groups of stepped structures.

3. The apparatus for synchronously checking the performance of a plurality of electromagnetic wire displacement sensors according to claim 2, characterized in that The detection rotating portion (210) is arranged as a circle, and the eddy current support (3) is coaxially arranged with the detection rotating portion (210).

4. The apparatus for synchronously checking the performance of a plurality of electromagnetic wire displacement sensors according to claim 3, characterized in that The detection component (2) further includes a detection fixing portion (220), which is sleeved on the inner periphery of the detection rotating portion (210).

5. The apparatus for synchronously checking the performance of a plurality of electromagnetic wire displacement sensors according to claim 4, characterized in that The sensor mounting portion (310) includes a groove (311) and a connecting sheet (312), the groove (311) is arranged on the circular outer peripheral wall of the eddy current support (3), and the groove (311) is provided with a first connecting hole on both sides.

6. The apparatus for synchronously checking the performance of a plurality of electromagnetic wire displacement sensors according to claim 5, characterized in that The detection positions include an initial position, a minimum gap position, an intermediate gap position and a maximum gap position.

7. The apparatus for synchronously checking the performance of a plurality of electromagnetic wire displacement sensors according to claim 6, characterized in that Further including a fixing member (4), the fixing member (4) is fixedly connected with the base (1), the detection component (2) is sleeved on the outer periphery of the fixing member (4), and the eddy current support (3) abuts against one end of the fixing member (4).

8. The apparatus for synchronously checking the performance of a plurality of electromagnetic wire displacement sensors according to claim 7, characterized in that The base (1) is provided with a positioning groove (110), and the fixing member (4) is connected with the base (1) through the positioning groove (110).

9. The apparatus for synchronously checking the performance of a plurality of electromagnetic wire displacement sensors according to claim 8, characterized in that The eddy current support (3) is provided with a first fixing hole (320) arranged on the end face of the eddy current support (3), and the eddy current support (3) is connected with the base (1) through the first fixing hole (320).

10. The apparatus for synchronously checking the performance of a plurality of electromagnetic wire displacement sensors according to claim 9, characterized in that The eddy current support (3) is provided with a second fixing hole (330) arranged on the end face of the eddy current support (3), and the eddy current support (3) is connected with the detection fixing part (220) through the second fixing hole (330).

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