一种浓度场成像装置与方法

By combining optical modulation and micromirrors with compressed sensing technology, the problem of mechanical inertia limitation has been solved, enabling rapid and accurate imaging of gas concentration fields, supporting rapid source tracing and flow estimation of gas leaks.

CN121954920BActive Publication Date: 2026-07-17UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-04-01
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing gas concentration detection technologies are limited by mechanical inertia, making it impossible to quickly modulate the angle of emitted light. Furthermore, continuous scanning leads to unreliable absorption spectral measurements, hindering rapid source tracing and leakage flow estimation of gas leaks.

Method used

A laser emission orientation modulation method combining optical modulation and micromirror is adopted. By combining compressed sensing theory, random scanning is used instead of traditional scanning, and rapid concentration field imaging is achieved through intermittent spot modulation and micromirror.

Benefits of technology

It improves the speed and accuracy of concentration measurement, realizes high spatiotemporal resolution imaging of gas concentration fields, supports rapid leak diagnosis and leak point location, reduces costs and extends equipment life.

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Abstract

该发明公开了一种浓度场成像装置与方法,涉及气体浓度检测领域,涉及气体泄漏检测成像与快速溯源。该装置包含光学调制模块、微振镜、激光发射模块、单点浓度测定模块以及数据处理成像模块。对出射激光的方位瞬时调制,抑制扫描过程中的运动噪声,并结合压缩感知理论,实现对场景浓度的随机采样与浓度场反演。利用本发明的浓度场成像装置与方法,利用多个双折射棱镜调控单元实现了出射激光的毫秒级光束偏转调控,最大化了激光波长调制过程光斑静态保持时间。抑制了扫描运动对单点浓度测量带来的噪声干扰,提高了浓度测量的速度,同时结合压缩感知理论,使用随机扫描保证了系数浓度场的可重建性,提高了浓度场成像的时空分辨率。
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Citation Information

Patent Citations

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  • Inspection apparatus and method

    CN105549341A

  • Optical measuring device and process

    WO2016092161A1