Non-contact displacement sensor self-recovery impact resistance device and evaluation method thereof

Abstract

The invention relates to a non-contact displacement sensor self-recovery impact resistance device and an evaluation method thereof. The device specifically comprises a displacement sensor body assembly, a capsule corrugated pipe, a limiting shell and an anti-impact self-resetting assembly. The capsule body corrugated pipe elastically seals and protects a sensor probe and a detection plate, and the elastic deformation capability of the capsule body corrugated pipe can adapt to displacement change under the condition of large impact; a linear guide rail and a limiting stop structure are designed in the limiting shell, so that the detection plate can be restrained to move in the vertical direction, and the maximum vertical displacement of the detection plate can be limited; the two ends of a self-recovery spiral spring are connected with the detection plate and a limiting shell base respectively, an impact buffering effect is achieved, and the detection plate returns to the initial position after being impacted. The performance evaluation method for an anti-impact structure, and the method is used for guiding design of the parameters of the anti-impact structure and evaluating an impact-post structure reset state. The device and the method have the advantages of high measurement precision, strong impact resistance, good adaptability and the like, and can realize high-precision displacement monitoring and measurement in a large impact environment.

Description

Technical field [0001] The present invention relates to a displacement sensor field, and more particularly to a non-contact displacement sensor impact self-recovery device and its evaluation method. Background technique [0002] In a ship, there is an external impact disturbance in the vehicle usage environment, which causes a large displacement change at the displacement sensor measurement, so that the sensor probe has hit the detecting plate, which causes damage to the sensor. If you choose a larger amount of displacement sensor to set a sufficiently secure gap to avoid the impact, there is a problem that the sensor measurement accuracy and high cost. Therefore, in some major impact and strong vibration, it is necessary to reliably, high precision displacement measurements, and the displacement sensor must perform impact design to obtain excellent impact adaptability. [0003] The main problem in existing such devices is, such as the eddy current displacement sensor (applicatio...

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Problems solved by technology

[0003] The main problem existing in this type of equipment is that, for example, the eddy current displacement sensor (application publication number: CN203489834U) mainly aims at the temperature drift problem of the eddy current sensor, and provides an eddy current displacement sensor that can effectively reduce the temperature drift. It is reflected in the cumbersome use process. It is necessary to set the characteristic slope and other parameters of the sensor to perform displacement measurement. At the same time, the measurement signal is easily disturbed during long-distance transmission and cannot be applied to occasions with harsh working environments.

In view of the above deficiencies, the integrated structure intelligent bus eddy current displacement sensor (application publication number: CN105953715A) provides a highly integrated, high precision, intelligent electric sensor with the ability of online compensation of temperature environment changes and the ability of fault self-diagnosis. The eddy current displacement sensor, however, has weak impact resistance, and it is easy to cause the sensor to be damaged by collision in the event of large impact and vibration, and its adaptability to large displacement under impact conditions is weak

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