A double-sensing-element pen-type free-field pressure sensor

A pressure sensor and sensitive element technology, applied in the direction of measuring blasting force, etc., can solve the problem of non-linearity of sensitivity, and achieve the effect of high sensitivity, wide range, and enhanced sensitivity

Active Publication Date: 2019-03-12
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (3) Non-linear sensitivity, such as ≤1%;

Method used

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  • A double-sensing-element pen-type free-field pressure sensor
  • A double-sensing-element pen-type free-field pressure sensor
  • A double-sensing-element pen-type free-field pressure sensor

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Embodiment Construction

[0041] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0042] The present invention provides a double-sensing-element pen holder type free-field pressure sensor, see attached figure 1 , 2 , including: guide rod 1, core electrode 2, piezoelectric element 3, pressure copper electrode 4, elastic element 5, positioning cylinder 6, insulating positioning sleeve 7, signal line 8, O-shaped rubber ring 9, connector 10 and Cable connection seat 11;

[0043] See attached image 3 , 4 , one end of the guide rod 1 is conical, the other end is cylindrical, one end of the guide rod 1 is a cone, and the other end of the guide rod 1 is a cylinder; the outer peripheral surface of the guide rod 1 is processed with two Planes parallel to each other; axial blind holes are processed on the cylindrical end face of the guide rod 1, and radial through holes are processed on two mutually parallel planes of the guide rod 1, and the...

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Abstract

The invention discloses a dual sensitive element pen type free field pressure sensor, and belongs to the technical field of explosive shock wave overpressure field measurement. The dual sensitive element pen type free field pressure sensor comprises a guide rod, a core electrode, piezoelectric elements, pressure bearing copper electrodes, elastic elements, a positioning cylinder, insulation positioning sleeves, a signal line, a connector and a cable connecting seat. The core electrode is located in a radial through hole of the guide rod. The two piezoelectric elements and the two pressure bearing copper electrodes are located coaxially at two ends of the core electrode respectively. The two insulation positioning sleeves coaxially sleeve external circumferential surfaces of the core electrode, the piezoelectric elements and the pressure bearing copper electrodes. The positioning cylinder and the two elastic elements both coaxially mounted in a sleeving manner in gaps between the insulation positioning sleeves and the radial through hole of the flow guide rod. One end of the connector is fixed in an axial blind hole of the flow guide rod, and an axial through hole in the other end is equipped with the cable connecting seat. Two ends of the signal line are respectively fixed in the through hole of the core electrode and on the cable connecting seat. The sensor has good water tightness and impact resistance and can meet the requirements of field explosion test.

Description

technical field [0001] The invention belongs to the technical field of explosion shock wave overpressure field measurement, and in particular relates to a double-sensitive-element pen holder type free-field pressure sensor. Background technique [0002] The peak overpressure and impulse of the air shock wave generated by the explosive in the air are an important parameter of the energy characteristics of the explosive, and also an important index to measure the damage effect of the ammunition, especially the blasting and killing—blasting warhead. When directly measuring the shock wave overpressure passing vertically over the surface of the sensitive element of the component in the air explosion or water explosion shock wave overpressure field, a free field pressure sensor must be used; when installing this sensor, the support rod of this sensor must point to the center of the explosion. In field explosion tests, this free-field pressure sensor is suitable for direct measurem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L5/14
CPCG01L5/14
Inventor 吕中杰黄正平黄风雷刘彦段卓平
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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