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Device and method for adjusting sensitivity of infrasound sensor

A technology for adjusting devices and sensors, which is applied to measuring devices, control/adjustment systems, instruments, etc., can solve problems such as poor detection accuracy, and achieve the effect of maintaining sensitivity and improving detection accuracy.

Pending Publication Date: 2022-04-05
THE THIRD RES INST OF CHINA ELECTRONICS TECH GRP CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a device and method for adjusting the sensitivity of an infrasound sensor, which is used to at least solve the problem of poor detection accuracy caused by changes in the sensitivity of the infrasound sensor caused by ambient temperature in the prior art

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  • Device and method for adjusting sensitivity of infrasound sensor
  • Device and method for adjusting sensitivity of infrasound sensor
  • Device and method for adjusting sensitivity of infrasound sensor

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Embodiment Construction

[0035] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0036] The embodiment of the first aspect of the present invention proposes an adjustment device for the sensitivity of the infrasound sensor, refer to figure 1 , the infrasound sensor includes:

[0037] The housing 14 is provided with a partition 10 for separating the inner space of the housing 14 into a front chamber 1 and a rear chamber 15. The partition 10 is provided with a pressure equalization hole 11, the front chamber 1 communicates wi...

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Abstract

The invention discloses an infrasound sensor sensitivity adjusting device and method, and the infrasound sensor comprises a housing which is provided with a partition plate which is used for dividing the internal space of the housing into a front cavity and a rear cavity, the partition plate is provided with a pressure equalizing hole, the front cavity is communicated with the outside, and a vibrating diaphragm and a back polar plate are disposed in the front cavity; the adjusting device comprises a measuring and calculating unit used for measuring the temperature T1 of a front cavity, the temperature T2 of a rear cavity and the temperature change rate dT of the rear cavity and calculating the current compensation amount I based on T1, T2 and dT; and the adjusting unit is arranged in the front cavity and arranged opposite to the vibrating diaphragm, and the adjusting unit is in communication connection with the measuring and calculating unit so as to obtain the I and adjust the tension of the vibrating diaphragm based on the I. According to the technical scheme, the suction force of the adjusting unit to the vibrating diaphragm is changed by calculating the current value of the adjusting unit, so that the tension of the vibrating diaphragm is adjusted to achieve the effect of keeping the sensitivity of the infrasound sensor, and the detection precision is improved.

Description

technical field [0001] The invention relates to the field of infrasound wave detection, in particular to a device and method for adjusting the sensitivity of an infrasound sensor. Background technique [0002] The infrasound sensor is a device capable of receiving air infrasonic signals, which can be used for earthquake precursor infrasonic waves, atmospheric gravity wave measurement, and monitoring and early warning of various natural disasters such as volcanoes and tsunamis. The existing infrasound sensor products can be divided into two categories: capacitive type and moving coil type according to different working principles. For the capacitive infrasound sensor, its acoustically sensitive structure is a variable capacitor composed of a circular fixed metal film (diaphragm) and a back plate. The diaphragm will vibrate under the action of infrasonic waves. At this time, the capacitance value It will also change accordingly, and then generate a voltage signal output throu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V13/00G01V1/00G05D15/01
Inventor 马春宇周瑜刘云飞高硕张乐意李延胜冯杰
Owner THE THIRD RES INST OF CHINA ELECTRONICS TECH GRP CORP
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