Self-checking method and device of electromagnetic sensor

A technology of electromagnetic sensors and self-checking devices, which is applied in the field of electromagnetic sensors, can solve the problems of low detection efficiency of distributed electromagnetic sensors, inability to detect and install electromagnetic sensors, and complicated detection process, and achieve convenient detection, low detection efficiency, and simple detection process Effect

Pending Publication Date: 2022-04-15
中国船舶重工集团公司七五0试验场
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Problems solved by technology

However, the traditional self-inspection method mainly has the following problems: (1) for multi-axis electromagnetic sensors, it needs to be detected many times, so the detection efficiency is low; (2) every time the electromagnetic sensor is self-inspected, it is necessary to adjust the electromagnetic sensor Therefore, the detection process is complex and cumbersome; (3) When the electromagnetic sensor self-tests, an external magnetic field source is required, so it is impossible to detect electromagnetic sensors installed in confined spaces and located remotely. The detection efficiency of the sensor is low

Method used

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  • Self-checking method and device of electromagnetic sensor

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Embodiment 1

[0073] Embodiment 1 Multi-axis electromagnetic sensor self-test

[0074] When the electromagnetic sensor to be detected is a multi-axis electromagnetic sensor scene, the electromagnetic sensor should be placed in the center of the coil, and the coils should be arranged as image 3 In the form shown, the plane where the coil is located is not parallel to the detection sensitive axis of the electromagnetic sensor, so that all axes of the electromagnetic sensor can detect the magnetic field generated by the coil. When the electromagnetic sensor to be tested is an orthogonal three-axis, the ideal coil layout is that the angle between the coil axis and the three coordinate axes should be approximately equal to 54.73°. At this time, when the magnetic field generated by the coil is B, the three-axis detection of the electromagnetic sensor The received magnetic field strength is B / √3, which can make three-axis self-test at the same time. Similarly, when the electromagnetic sensor to ...

Embodiment 2

[0075] Embodiment 2 Distributed electromagnetic sensor self-inspection; electromagnetic sensor self-inspection located in a sealed space

[0076] When a plurality of electromagnetic sensors are distributed in different spaces or locations, and are in the distributed electromagnetic sensor self-test; when the electromagnetic sensor is located in a sealed space, the controller 3 and the coil 2 can be integrated with the electromagnetic sensor. When self-inspection is required, the self-inspection can be completed by performing the self-inspection steps S1 to S4.

[0077] It can be seen from the formula that the magnetic field radiated by the energized coil is symmetrical. In order to make each axis of the electromagnetic sensor receive the magnetic field radiated by the coil, it is necessary to adjust the relative position of the electromagnetic sensor and the coil so that each axis of the electromagnetic sensor can receive the magnetic field radiated by the coil. The axis is no...

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Abstract

The invention discloses a self-checking method and device for an electromagnetic sensor, and the method comprises the following steps: S1, determining an electromagnetic sensor (1) to be self-checked; s2, the data processing terminal (4) initiates a self-checking request to the controller (3); s3, the electromagnetic sensor (1) receives a magnetic field signal generated by the coil (2), further converts the magnetic field signal into an electric signal and outputs the electric signal to a data processing terminal (4) through a transmission cable (5); and S4, the data processing terminal (4) compares the data processing result with a known signal sent by the controller, and judges whether the electromagnetic sensor (1) is abnormal or not. According to the invention, when the function and the performance of the electromagnetic sensor are detected, the function and the performance of a multi-axis electromagnetic sensor, a distributed electromagnetic sensor, an electromagnetic sensor located in a sealed space and the like can be efficiently and conveniently detected without adding extra equipment.

Description

technical field [0001] The invention relates to a self-inspection method, in particular to an electromagnetic sensor self-inspection method, which is mainly used for self-inspection of the function and performance of the electromagnetic sensor, especially for the completion of multi-axis electromagnetic sensors and distributed electromagnetic sensors. The function and performance of an electromagnetic sensor located in a sealed space and the like realize efficient and convenient detection, and belong to the technical field of electromagnetic sensors. Background technique [0002] Generally speaking, the currently used electromagnetic sensor detection method is mainly to place the electromagnetic sensor in the electromagnetic field generated by a specific field source to detect the electromagnetic sensor. However, the traditional self-inspection method mainly has the following problems: (1) for multi-axis electromagnetic sensors, it needs to be detected many times, so the det...

Claims

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Application Information

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IPC IPC(8): G01D18/00
Inventor 姜春华张国光焦瑜呈郭春福马雪
Owner 中国船舶重工集团公司七五0试验场
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