Evaluation method of a non-contact displacement sensor self-recovery anti-shock device

Abstract

The invention relates to an evaluation method of a non-contact displacement sensor self-recovery anti-shock device. The device specifically includes a displacement sensor body assembly, a capsule bellows, a limit housing and an impact-resistant self-resetting assembly. The bellows of the capsule elastically closes and protects the sensor probe and the detection plate, and its elastic deformation capacity can adapt to the displacement change under the condition of large impact; the linear guide rail and the limit stop structure are designed inside the limit housing, which can constrain the detection plate along the vertical direction It moves and limits the maximum vertical displacement of the detection board; the two ends of the self-restoring coil spring are respectively connected to the detection board and the limit housing base to play the role of impact buffer, and the detection board returns to the initial position after the impact; a kind of resistance Impact structure performance evaluation method, guide the design of impact structure parameters and evaluate the structure reset state after impact. The invention has the advantages of high measurement precision, strong impact resistance, good adaptability, etc., and can realize high-precision displacement monitoring and measurement in a large impact environment.

Description

technical field [0001] The invention relates to the field of displacement sensors, in particular to an evaluation method of an anti-shock self-recovery device of a non-contact displacement sensor. Background technique [0002] In the environment of ships and vehicles, there are external impact disturbances, which will cause a large displacement change at the measurement position of the displacement sensor, causing the sensor probe to collide with the detection plate, causing damage to the sensor. If a displacement sensor with a larger range is selected to set a safe enough gap to avoid impact, there are problems of low measurement accuracy and high cost of the sensor. Therefore, in some occasions with large shock and strong vibration, in order to achieve reliable and high-precision displacement measurement, the displacement sensor must be designed for shock resistance to obtain excellent shock adaptability. [0003] The main problem existing in this type of equipment is tha...

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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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