Surrounding compression floating ground piezoelectric sensor for touchdown fuze

Abstract

The invention provides a surrounding compression floating ground piezoelectric sensor for a touchdown fuze, and relates to the technical field of aerospace sensors. The surrounding compression floating ground piezoelectric sensor for the touchdown fuze comprises floating ground piezoelectric stack parallel sensitive materials, a shell, an anti-dislocation ring, a mass block, a pre-tightening ring,an anti-loosening ring, an upper cover, a two-core socket and output low noise cables. The anti-dislocation ring is vertically adhered on the bottom surface in the shell with the opening upward. Thefloating ground piezoelectric stack parallel sensitive materials are fixedly installed at the center of the bottom surface of the anti-dislocation ring. The mass block is fixedly installed on the toppart of the floating ground piezoelectric stack parallel sensitive materials. The pre-tightening ring is fixedly installed on the top part of the mass block. The anti-loosening ring is fixedly installed on the top part of the pre-tightening ring. The upper opening of the shell is sealed by the upper cover. The two-core socket is fixedly installed on the top part of the upper cover. One end of eachoutput low noise cables is connected with the two-core socket, and the other end of each output low noise cables is connected with an external electronic switch. One point grounding of the system canbe ensured by the internal floating ground design and the interference of the ground current can be reduced, and one point grounding of the system is realized and the reliability of the product can be enhanced.

Description

technical field [0001] The invention relates to the technical field of aerospace sensors, in particular to a peripheral compression floating piezoelectric sensor for grounding fuzes. Background technique [0002] The characteristic of the touchdown fuze is that it detonates immediately after the fuze touches the target. Piezoelectric touchdown fuzes are widely used in anti-tank bombs, aerial bombs and missiles because of their high instantaneousness. Due to the large change in the contact angle of the warhead, the piezoelectric sensor at this time is required to have a strong lateral response capability. The existing design of the piezoelectric sensor for the ground contact fuze generally uses three groups of piezoelectric sensitive elements to respond to X, Y, and Z respectively. The shock acceleration in three directions requires three output sockets. The X direction adopts compression design, and the Y and Z directions adopt shear design. The structure is relatively comp...

AI Technical Summary

Problems solved by technology

Due to the large change in the contact angle of the warhead, the piezoelectric sensor at this time is required to have a strong lateral response capability. The existing design of the piezoelectric sensor for the ground contact fuze generally uses three groups of piezoelectric sensitive elements to respond to X, Y, and Z respectively. Impact acceleration in three directions, and requires 3 output sockets, the X direction adopts compression design, Y and Z directions adopt shear design, the structure is relatively complex and the reliability is low

[0003] At present, there is no relevant report on the technology of surrounding compressed floating piezoelectric sensor for touchdown fuze

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