Novel eddy current displacement sensor double-probe calibration device
By using a high-precision digital display ten-thousandth and micrometer fine-tuning slide in the eddy current displacement sensor calibration device, the precise adjustment of the sensor's second probe is achieved, solving the problem of adjusting the zero-position gap of the sensor's second probe and improving calibration accuracy and efficiency.
Patent Information
- Application Number
- CN202520107221.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-01-16
AI Technical Summary
When calibrating a differential eddy current displacement sensor, adjusting the zero-position gap of the sensor's second probe is difficult, resulting in large errors and low efficiency. Traditional manual adjustment methods are insufficient to achieve accurate and efficient positioning.
A manually adjustable adjustment device is used, combined with a high-precision digital display ten-thousandth and micrometer fine adjustment slide, to precisely adjust the position of the second probe of the sensor, achieving forward and backward movement with a step resolution of 1μm, ensuring that the second probe of the sensor is accurately positioned to the zero gap.
This improves the accuracy and efficiency of zero-position gap adjustment for the second probe of the sensor, reduces the tediousness and errors of manual adjustment, and ensures the accuracy and efficiency of subsequent calibration curves.
Smart Images
Figure CN223741473U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sensor technical field especially a novel eddy current displacement sensor double probe calibration device. BACKGROUND
[0002] As a kind of non-contact, high-precision micro-displacement measuring element, eddy current sensor is widely used in displacement, vibration, speed, metal film thickness, metal component geometric size, surface roughness and other physical quantity measurement with the advantages of simple structure, low price, high sensitivity, wide frequency band, not affected by oil pollution medium and strong anti-interference ability, and plays an important role in industrial production, aviation industry, nuclear industry, petrochemical industry, safety detection and other fields.
[0003] Before the practical application of differential eddy current sensor, the sensor needs to be calibrated, and the first step of calibration requires installing and fixing the first probe of sensor, the second probe of sensor and the measured object to achieve the relative position required by system, the gap between the first probe of sensor, the second probe of sensor and the measured object when the output voltage of sensor is zero is called zero gap. First, install and fix the first probe of sensor, and make the first probe of sensor reach zero gap position by adjusting high-precision digital vernier micrometer to translate measured object;For the installation position of zero gap of the second probe of sensor required by system, the traditional method is usually to adjust the position of the second probe of sensor manually, so that the distance between the second probe of sensor and the measured object changes, and the output voltage of sensor is observed synchronously until the deviation between the output voltage of sensor and zero voltage is within the allowable range, and then the second probe of sensor is fixed and installed. After the first probe of sensor and the second probe of sensor reach the specified zero gap, the distance between the measured object and the sensor probe and the output voltage value of sensor are obtained by adjusting the measured object multiple times, and finally the calibration curve of differential eddy current displacement sensor is obtained by data fitting. In this method, it is very difficult to manually adjust the second probe of sensor to reach zero gap position, which reduces the calibration efficiency. In order to improve the calibration accuracy and efficiency of differential eddy current displacement sensor, a calibration device is urgently needed. CONTENT OF UTILITY MODEL
[0004] (I) Technical problems solved
[0005] The utility model discloses a purpose at solving differential formula eddy current displacement sensor calibration, need to install fixed sensor first probe, sensor second probe and the relative position of measured object three to reach system requirement, the operation difficulty of manually adjusting sensor second probe to reach zero gap position is big, error is big, the problem of low efficiency, the utility model discloses a patent proposes the sensor second probe installation on the adjusting device of manual adjustment, adjusts the micrometer fine adjustment sliding table on the adjusting device to drive sensor second probe, makes it accurate to advance or retreat with 1um's step resolution, thereby solves the past traditional mode manually adjusting sensor second probe and can not realize accurate, efficient positioning to zero gap's difficult problem, provides a kind of high-precision, high-efficiency adjusting sensor second probe to zero gap position's method, and further provides guarantee for subsequent calibration curve, improves the calibration accuracy of differential formula eddy current displacement sensor input-output characteristic.
[0006] (Two) technical scheme
[0007] To achieve the above object, the utility model discloses a novel eddy current displacement sensor double probe calibration device, the device includes fixing device, detection component and adjusting device, the adjusting device and detection component are installed on the fixing device;
[0008] The detection component includes detection component one and detection component two, and the detection component one includes a support one and a sensor first probe, and the detection component two includes a support two and a sensor second probe, and the sensor first probe and the sensor second probe are respectively installed on the two sides of the measured object corresponding to them.
[0009] The adjusting device includes a high-precision digital display micrometer and a micrometer fine adjustment sliding table, wherein the rotating shaft of the high-precision digital display micrometer can be used to fix the measured object, the handle of the high-precision digital display micrometer can be adjusted to adjust the horizontal displacement of the measured object, the detection component two is fixedly installed on the micrometer fine adjustment sliding table, and the position of the sensor second probe on the detection component two is adjusted by adjusting the horizontal displacement of the micrometer fine adjustment sliding table.
[0010] Preferably, the fixing device includes a fixing base that can be fixedly installed on a marble platform, and the fixing base is provided with the support one, and the support one is used to install the sensor first probe, and the support two on the detection component two is used to install the sensor second probe.
[0011] Preferably, the micrometer fine adjustment sliding table is fixedly installed on the fixing base, the detection component two is fixed on the micrometer fine adjustment sliding table through bolts, and the sensor second probe fixed on the detection component two can be driven to advance or retreat by the adjuster of the micrometer fine adjustment sliding table.
[0012] Preferably, the first sensor probe and the second sensor probe are respectively located on both sides of the object being measured, and the two are arranged in a straight line or in parallel.
[0013] Preferably, the high-precision digital display ten-thousandth caliper is equipped with a digital display screen that can display the position information of the measured object in real time.
[0014] The preferred device further includes a sensor controller electrically connected to the first sensor probe and the second sensor probe. The sensor controller is connected to a high-precision six-and-a-half-digit digital multimeter via a communication cable. Both the sensor controller and the high-precision six-and-a-half-digit digital multimeter are fixedly mounted on a marble platform.
[0015] Preferably, the high-precision digital display micrometer is fixedly installed on one side of the fixed base. Adjusting the handle of the high-precision digital display micrometer can adjust the rotation axis of the high-precision digital display micrometer, causing the object to be measured, which is fixed on the rotation axis, to move closer to or away from the first sensor probe and the second sensor probe.
[0016] (III) Beneficial Effects
[0017] This invention provides a novel dual-probe calibration device for eddy current displacement sensors, which has the following advantages:
[0018] In use, this invention allows the second probe of the sensor to be moved away from or closer to the object being measured by adjusting the micrometer's fine-tuning slide. The reading of the high-precision six-and-a-half-digit digital multimeter is then observed until the deviation between the voltage value and zero voltage of the high-precision six-and-a-half-digit digital multimeter is within the allowable range. This improves the accuracy and efficiency of zero-position gap adjustment of the second probe of the sensor and reduces the tediousness and error of manually adjusting the second probe of the sensor. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the external structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the external structure of the present invention used to fix the object under test;
[0021] Figure 3 This is a schematic diagram of the external structure of the second probe of the adjustment sensor according to this utility model;
[0022] Figure 4 This is a schematic diagram of the external structure of the first probe of the sensor used in this utility model;
[0023] Figure 5 This is a schematic diagram of the overall appearance and structure of the present utility model;
[0024] Figure 6 This is a diagram showing the positional relationship of the sensor of this invention when it has zero output.
[0025] In the diagram: 1. Micrometer fine-tuning slide; 11. Adjuster; 2. Detection component two; 21. Second sensor probe; 22. Support two; 3. Detection component one; 31. First sensor probe; 32. Support one; 4. High-precision digital micrometer; 41. Handle; 42. Digital display screen; 43. Rotary axis; 5. Object under test; 6. Fixed base; 7. Sensor controller; 8. High-precision six-and-a-half-digit digital multimeter; 9. Marble platform. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0027] Please see Figures 1-6 This utility model provides a novel dual-probe calibration device for an eddy current displacement sensor, including a fixing device, a detection component, and an adjustment device. The fixing device includes a fixing base 6 that can be fixedly installed on a marble platform 9. A bracket 32 and a micrometer fine-tuning slide 1 are installed on the fixing base 6. A through hole 1 is opened on the bracket 32, and the first sensor probe 31 is installed on the bracket 32 through the through hole 1. A bracket 22 is installed on the micrometer fine-tuning slide 1, and a through hole 2 is opened on the bracket 22, and the second sensor probe 21 is installed on the bracket 22 through the through hole 2. Both ends of the first sensor probe 31 protrude from the through hole 1, and both ends of the second sensor probe 21 protrude from the through hole 2. The bracket 22 is fixedly installed on the micrometer fine-tuning slide 1 by bolts, and the bracket 32 is fixedly installed on the fixing base 6 by bolts.
[0028] The detection components include detection component 3 and detection component 2. Both detection component 3 and detection component 2 are installed above the fixed base 6. Detection component 3 includes bracket 32 and sensor first probe 31. Detection component 2 includes bracket 22 and sensor second probe 21. Sensor first probe 31 and sensor second probe 21 are respectively installed on the corresponding sides of the object being measured 5, and the two are arranged in the same straight line or in parallel.
[0029] The adjustment device includes a micrometer fine-tuning slide 1 and a high-precision digital display micrometer 4. The high-precision digital display micrometer 4 is fixedly installed on one side of the fixed base 6. Adjusting the handle 41 of the high-precision digital display micrometer 4 can adjust the rotation axis 43 of the high-precision digital display micrometer 4, which drives the object 5 fixed on the rotation axis 43 to move closer (at this time, the object 5 is away from the second sensor probe 21) to the first sensor probe 31, thereby controlling the object 5 to reach the zero gap close to the first sensor probe 31. The micrometer fine-tuning slide 1 is fixedly installed on the fixed base 6. The second detection component 2 is fixed to the micrometer fine-tuning slide 1 by bolts. Adjusting the adjuster 11 of the micrometer fine-tuning slide 1 can drive the second sensor probe 21 fixed on the second detection component 2 to move forward or backward, thereby adjusting the second sensor probe 21 to reach the zero gap. The high-precision digital display micrometer 4 is equipped with a digital display screen 42 that can display the position information of the measured object 5 in real time. The resolution of the digital display screen 42 is 0.1um. Rotating the handle 41 of the high-precision digital display micrometer 4 can move the measured object 5 forward or backward. The displacement value of the measured object 5 forward or backward can be clearly read on the digital display screen 4. When adjusting the high-precision digital display micrometer 4, the horizontal displacement of the measured object 5 can be adjusted so that the measured object 5 can contact the first probe 31 of the sensor.
[0030] A novel dual-probe calibration device for an eddy current displacement sensor also includes a sensor controller 7 electrically connected to the first sensor probe 31 and the second sensor probe 21. The sensor controller 7 is connected to a high-precision six-and-a-half-digit digital multimeter 8 via a communication cable. Both the sensor controller 7 and the high-precision six-and-a-half-digit digital multimeter 8 are fixedly mounted on a marble platform 9.
[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0033] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.
Claims
1. A novel dual-probe calibration device for an eddy current displacement sensor, characterized by: The device comprises a fixing device, a detection assembly and an adjusting device, the adjusting device and the detection assembly are installed on the fixing device; the fixing device comprises a fixing base which can be fixedly installed on a marble platform, a support one and a detection assembly two are installed on the fixing base, wherein the support one is used for installing a sensor first probe, and the support two of the detection assembly two is used for installing a sensor second probe; The detection assembly comprises a detection assembly one and a detection assembly two, the detection assembly one comprises the support one and the sensor first probe, and the detection assembly two comprises the support two and the sensor second probe, the sensor first probe and the sensor second probe are respectively installed on the two sides corresponding to the measured object; The adjusting device comprises a high-precision digital display micrometer and a micrometer fine adjustment sliding table, wherein the rotating shaft of the high-precision digital display micrometer can be used for fixing the measured object, the handle of the high-precision digital display micrometer can be used for adjusting the horizontal displacement of the measured object, the detection assembly two is fixedly installed on the micrometer fine adjustment sliding table, and the position of the detection assembly two is adjusted by adjusting the horizontal displacement of the micrometer fine adjustment sliding table.
2. The novel dual-probe calibration device for an eddy current displacement sensor according to claim 1, characterized in that: The micrometer fine adjustment sliding table is fixedly installed on the fixing base, the detection assembly two is fixedly installed on the micrometer fine adjustment sliding table through bolts, and the sensor second probe fixed on the detection assembly two is driven to move forward or backward by adjusting the adjuster of the micrometer fine adjustment sliding table.
3. A novel dual-probe calibration device for an eddy current displacement sensor according to claim 1 or 2, characterized in that: The sensor first probe and the sensor second probe are respectively arranged on the two sides of the measured object, and are arranged in a same straight line or in parallel.
4. The novel dual-probe calibration device for an eddy current displacement sensor according to claim 1, characterized in that: The high-precision digital display micrometer is provided with a digital display screen which can display the position information of the measured object in real time.
5. The novel dual-probe calibration device for an eddy current displacement sensor according to claim 1, characterized in that: The device further comprises a sensor controller which is electrically connected with the sensor first probe and the sensor second probe, the sensor controller is connected with a high-precision six-bit half digital multimeter through a communication cable, and the sensor controller and the high-precision six-bit half digital multimeter are fixedly installed on the marble platform.
6. The novel dual-probe calibration device for an eddy current displacement sensor according to claim 5, characterized in that: The high-precision digital display micrometer is fixedly installed on one side of the fixing base, the handle of the high-precision digital display micrometer can be used for adjusting the rotating shaft of the high-precision digital display micrometer, and the measured object fixed on the rotating shaft is driven to move between the sensor first probe and the second probe.