Light pressure measuring device

A measuring device and piezoelectric technology, applied in the field of sensors, can solve problems such as low accuracy, and achieve the effects of improving measurement accuracy, easy mass production, and fast response

Active Publication Date: 2021-07-09
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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Embodiment Construction

[0028]The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0029] Such as figure 1 and figure 2 As shown, the optical pressure measurement device includes an optical frequency conversion unit, a signal conditioning acquisition unit, a signal processing unit, a display unit and a DC voltage stabilization unit;

[0030] The optical frequency conversion unit includes a drive circuit and a piezoelectric resonant sensor; the output end of the piezoelectric resonant sensor is connected ...

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Abstract

The invention discloses a light pressure measuring device which comprises a light frequency conversion unit, a signal conditioning and collecting unit, a signal processing unit, a display unit and a direct current voltage stabilizing unit. The light frequency conversion unit comprises a driving circuit and a piezoelectric resonant sensor; the output end of the piezoelectric resonant sensor is connected with the input end of the driving circuit; the output end of the driving circuit is in communication connection with the input end of the signal conditioning and collecting unit; the signal processing unit is respectively in communication connection with the output end of the signal conditioning and collecting unit and the display unit; the direct current voltage stabilizing unit is electrically connected with the driving circuit; the piezoelectric resonant sensor comprises a sensor wafer, a first sensor electrode and a second sensor electrode; and the sensor wafer is secured between the first sensor electrode and the second sensor electrode. The optical signal is converted into the frequency signal, the optical pressure information is quickly obtained through the frequency difference, and the optical pressure measurement precision is improved.

Description

technical field [0001] The invention relates to the field of sensors, in particular to a light pressure measuring 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, the mechanical quantity is derived and cannot be directly observed. It is usually necessary to convert it into visible macroscopic object motion or deformation, or use special physical effects to convert pressure into other types of physical signals for measurement . In the era of quantization of international units, light pressure, as a tiny force value of energy quantization, has h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/16G01L1/24
CPCG01L1/162G01L1/24
Inventor 徐林谭峰廖霜王厚军叶芃黄武煌张沁川邱渡裕
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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