A light pressure measuring device

Abstract

The invention discloses an optical pressure measurement device, which comprises an optical frequency conversion unit, a signal conditioning acquisition unit, a signal processing unit, a display unit and a DC voltage stabilization unit; the optical frequency conversion unit includes a drive circuit and a piezoelectric resonance sensor; The output end of the electric resonance sensor is connected with the input end of the drive circuit; the output end of the drive circuit is connected in communication with the input end of the signal conditioning and acquisition unit; the signal processing unit is respectively connected with the output end of the signal conditioning and acquisition unit and the display unit in communication; The voltage stabilization unit is electrically connected with the driving circuit; the piezoelectric resonance sensor includes: a sensor wafer, a first sensor electrode and a second sensor electrode; the sensor wafer is fixed between the first sensor electrode and the second sensor electrode. The invention improves the optical pressure measurement accuracy by converting the optical signal into the frequency signal, and quickly obtains the optical pressure information through the frequency difference.

Description

technical field [0001] The invention relates to the field of sensors, in particular to an optical pressure measurement device. Background technique [0002] Photon pressure (abbreviated as light pressure) refers to the mechanical pressure that light irradiates on the surface of an object. The precise measurement of light pressure has always been an unsolved problem in the scientific community. The main reason is that the photon pressure is very small, and the existing measurement equipment cannot directly detect it due to insufficient sensitivity. In addition, in the International System of Units, mechanical quantities are derived quantities and cannot be directly observed. Usually, it is necessary to convert them into visible macroscopic object motion or deformation, or to use special physical effects to convert pressure into other types of physical signals for measurement. . In the era of quantum development in international units, light pressure, as a tiny force value ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies in the prior art, a light pressure measurement device provided by the present invention solves the problem of low precision of the existing light pressure measurement method

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