Test bench suitable for stay wire displacement sensor test
By designing a test bench suitable for wire displacement sensors and utilizing high-precision linear guides and scales, the problem of matching electrical signals and displacement values in sensor testing under high-pressure underwater environments was solved, enabling low-cost detection of sensor accuracy.
Patent Information
- Application Number
- CN202423187610.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-23
Smart Images
Figure CN223623558U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of test technology for wire displacement sensing systems, and specifically to a test bench suitable for testing wire displacement sensors. Background Technology
[0002] A displacement sensor is a sensor used to measure the position or displacement change of an object. It converts the displacement of an object relative to a reference point into an electrical signal output, thereby enabling the monitoring and control of changes in the object's position. Among them, a cable displacement sensor, also known as a draw-wire displacement sensor or capacitive wire sensor, is a device used to measure the distance moved or the change in position of an object in a straight line. Cable displacement sensors are widely used in industrial automation, construction engineering, transportation, and other fields due to their wide measurement range, good accuracy, simple and compact structure, and strong adaptability.
[0003] However, in certain specific applications, such as underwater high-pressure environments, mature wire-type displacement sensor products do not yet exist, necessitating customized design and manufacturing. Achieving precise matching between the output electrical signal and the displacement value is crucial in the design process of wire-type displacement sensors. Currently, no patented technology provides a method to verify the correspondence between the output electrical signal of a wire-type displacement sensor and the actual displacement value. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a test bench suitable for testing wire displacement sensors, used to test the correspondence between the output electrical signal of the wire displacement sensor and the actual displacement value.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A test bench suitable for testing wire displacement sensors includes:
[0007] Two linear guide rails are arranged in parallel. A slider test head is slidably mounted on one linear guide rail, and a scale is arranged along the length direction on the other linear guide rail. A pointer is mounted on the slider test head, and the pointer points to the scale.
[0008] The test plate is fixedly mounted on the two linear guide rails.
[0009] A wire displacement sensor is mounted on the test plate, and the test connector of the wire displacement sensor is fixed to the slider test head.
[0010] The test bench for testing wire displacement sensors as described above further includes two fixing blocks, which are respectively disposed at both ends of the two linear guide rails, so that the two linear guide rails are kept parallel by the two fixing blocks.
[0011] The test bench for testing wire displacement sensors, as described above, further includes a high-precision linear guide rail.
[0012] Compared with the prior art, the advantages of this utility model are as follows:
[0013] (1) This utility model uses the standard displacement comparison method to test the wire displacement sensor using a test bench, so that the output electrical signal of the test wire displacement sensor corresponds one-to-one with the actual displacement value.
[0014] (2) The structure of this utility model is relatively simple, and it can achieve accuracy testing of various wire displacement sensors at low cost. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of the test bench in an embodiment of this utility model.
[0017] The components include: 1. a fixed block; 2. a wire displacement sensor; 3. a test plate; 4. a slider test head; 5. a scale; and 6. a linear guide rail. Detailed Implementation
[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0019] Example:
[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, in the embodiments of this utility model are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.
[0021] In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0022] See Figure 1 This utility model embodiment provides a test bench suitable for testing wire displacement sensors, comprising:
[0023] Two linear guide rails 6 are arranged in parallel. A slider test head 4 is slidably mounted on one linear guide rail 6, and a scale 5 is arranged along the length direction on the other linear guide rail 6. A pointer is provided on the slider test head 4, and the pointer points to the scale 5.
[0024] The test plate 3 is fixedly mounted on the two linear guide rails 6;
[0025] A wire displacement sensor 2 is mounted on the test plate 3 (shown within the dashed box), and the test connector of the wire displacement sensor 2 is fixed on the slider test head 4.
[0026] As an optional implementation, in some embodiments, two fixing blocks 1 are further included, which are respectively disposed at both ends of the two linear guide rails 6, so that the two linear guide rails 6 are kept parallel by the two fixing blocks 1.
[0027] As an optional implementation, in some embodiments, the linear guide 6 is a high-precision linear guide 6. For example, a high-precision linear guide 6 with a travel parallelism error typically within ±0.005mm.
[0028] In practice, the wire-type displacement sensor to be tested is fixed on the test plate 3, and the wire is aligned with the displacement direction. The slider test head 4 is moved to generate a series of known precise displacements, and the output data of the wire-type displacement sensor is recorded. During the left and right movement of the slider test head 4, it can be stopped at any time, and the displacement reading on the scale 5 can be read.
[0029] The sensor's output data is compared with the actual displacement of a standard displacement device to calculate the sensor's measurement error at different displacement points. By analyzing this error data, the sensor's accuracy can be assessed, and the error distribution can be determined. For example, if the sensor's measured value consistently deviates from the standard value within a small range across multiple measurements, the sensor's accuracy is high; conversely, if the deviation is large or unstable, the sensor's accuracy may be problematic.
[0030] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0031] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0032] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0033] The above embodiments are merely illustrative of the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made based on the substance of the content of this utility model should be covered within the scope of protection of this utility model.
Claims
1. A test bench suitable for testing wire displacement sensors, characterized in that, include: Two linear guide rails are arranged in parallel. A slider test head is slidably mounted on one linear guide rail, and a scale is arranged along the length direction on the other linear guide rail. A pointer is mounted on the slider test head, and the pointer points to the scale. The test plate is fixedly mounted on the two linear guide rails. A wire displacement sensor is mounted on the test plate, and the test connector of the wire displacement sensor is fixed to the slider test head.
2. The test bench for testing wire displacement sensors according to claim 1, characterized in that, It also includes two fixing blocks, which are respectively disposed at both ends of the two linear guide rails, and the two fixing blocks keep the two linear guide rails parallel.
3. The test bench for testing wire displacement sensors according to claim 1, characterized in that, The linear guide is a high-precision linear guide.