WO2019144925A1 - 一种红外、拉曼和激光三通道点对点实时融合的测量系统 - Google Patents

一种红外、拉曼和激光三通道点对点实时融合的测量系统 Download PDF

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WO2019144925A1
WO2019144925A1 PCT/CN2019/073134 CN2019073134W WO2019144925A1 WO 2019144925 A1 WO2019144925 A1 WO 2019144925A1 CN 2019073134 W CN2019073134 W CN 2019073134W WO 2019144925 A1 WO2019144925 A1 WO 2019144925A1
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point
laser
raman
infrared
imaging
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PCT/CN2019/073134
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French (fr)
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王守国
张幼文
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齐鲁工业大学
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/65—Raman scattering
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications

Definitions

  • the invention relates to a three-channel point-to-point real-time fusion measurement system for infrared, Raman and laser, in particular to a deep ultraviolet laser, a laser imaging CCD, a gate control circuit and a control circuit thereof.
  • Raman scattered light imaging ICCD red civil plane detector composed of a three-channel measurement system that can achieve point-to-point fusion.
  • the measurement of atmospheric pollutants is carried out by means of gas sampling, gas chromatography, mass spectrometry, far infrared absorption spectrometer, near-infrared absorption spectrometer, gas sensing detector and the like to detect pollutants.
  • gas sampling gas chromatography
  • gas sensing detector gas sensing detector and the like to detect pollutants.
  • These traditional measurements require the material to be sampled and then introduced into a light-shielding viewing chamber for measurement. The measurement speed is slow, and it is impossible to sample some high-temperature areas. It is impossible to achieve point-to-point fusion measurement of characteristic pollutants, particulate matter and temperature in the atmosphere, and it is impossible to measure in layers under atmospheric conditions.
  • Patent Publication No. 107449767A Authorization Bulletin No.: 104713865B
  • Authorization Bulletin No.: 104713865B etc.
  • These patents cannot realize three-channel point-to-point fusion measurement in the atmosphere. It is impossible to achieve stratified measurement and long-distance telemetry in the atmosphere.
  • These instruments have a short measurement distance and can only be performed in a vacuum chamber environment.
  • the present invention uses a deep ultraviolet laser whose laser wavelength is 266 nm ultraviolet laser, which is 266 nm.
  • the laser can directly measure the probe without shielding measurement in the sunlight environment, and realize deep ultraviolet laser CCD imaging of the target, and the deep ultraviolet laser does not penetrate the eyeball to reach the retinal blindness.
  • the infrared, Raman and laser three-channel point-to-point real-time fusion measurement system can simultaneously measure the Raman scattering signal of the target. It realizes the switching action of the ICCD receiving gate through a precisely controlled gate control circuit, so that when the Raman scattering signal reaches the receiver, the switching operation of the ICCD gate is realized at the switching speed of the nanosecond order, which is effective. The noise interference of the atmospheric background light on the Raman signal is avoided, and the Raman scattering spectrum imaging of the feature components on the target point is realized.
  • the infrared, Raman and laser three-channel point-to-point real-time fusion measurement system can simultaneously obtain the infrared signal of the target through the infrared filter to realize thermal imaging in an infrared red focal plane.
  • the three-channel signal of the infrared, Raman and laser three-channel point-to-point real-time fusion measurement system can be separately imaged or point-to-point fusion imaged on the display screen.
  • the invention combines the deep ultraviolet laser ranging technology, the gate control circuit control technology, and the infrared focal plane technology to realize the point-to-point fusion measurement of the target point in the atmospheric environment, and realize the layered measurement.
  • the system can realize real-time measurement, fast measurement speed and flexible operation of equipment. It can be widely used for online monitoring and early warning of pollutant leakage in industrial production lines, for real-time measurement of atmospheric pollution, and for toxic and harmful gases such as explosives. Remote telemetry.
  • FIG. 1 is a schematic structural diagram of a three-channel point-to-point real-time fusion measurement system for infrared, Raman, and laser according to an embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of a three-channel point-to-point real-time fusion measurement system for infrared, Raman and laser according to an embodiment of the present invention.
  • the system consists of a deep ultraviolet laser (101), gate control circuit (103), Raman photo imaging ICCD (119), laser imaging CCD (112), red diplomatic plane detector (113), and corresponding Raman length. It is composed of a pass filter (114), an ultraviolet laser filter (111), an infrared filter (116), etc.; the system uses laser ranging to measure the distance of the target point, and calculates the laser to fly to the target point and back.
  • the deep ultraviolet laser (101) uses a wavelength of 266 nm ultraviolet laser, which can directly measure the probe without shielding measurement in daylight environment, and realize laser imaging CCD, which will not wear Through the eyeball to reach the retina blind.
  • Corresponding system components are: diaphragm (102), mirror (104), mirror (105), secondary mirror (106), primary mirror (108), focusing mirror (110, etc.), dichroic mirror (109) ), deep ultraviolet filter (111), and finally imaged on deep ultraviolet laser CCD (112).
  • the system can simultaneously measure the Raman scattering signal of the target (100) by switching the ICD (119) receiving gate (118) through a precisely controlled gate circuit (103). Imaging of Raman scattered light ICCD on the target point (100).
  • the Raman scattering laser passes through two dichroic mirrors (109), a Raman long channel filter (114), and a focusing mirror, and then enters a multi-fiber array (117) matching the slit, the optical fiber array ( 117) is an optical fiber array capable of Raman light without attenuation, and Raman light is re-imaged onto ICCD (119).
  • the ICCD is an area array CCD.
  • the system can simultaneously measure the infrared signal of the target (100) by imaging the infrared red focal plane detector (113) through the infrared filter (116).
  • the three-channel signal of the system can be imaged separately or point-to-point fusion on the display screen (115).

Abstract

一种红外、拉曼和激光三通道点对点实时融合的测量系统，该系统包括一个深紫外激光器（101），闸控电路（103），拉曼光成像ICCD（119），激光成像CCD（112），红外交平面探测器（113），以及对应的拉曼长通滤光片（114）、紫外激光滤光片（111）、红外滤光片（116）等；该系统使用激光测距来标测目标点的距离,通过计算激光到达目标点以及返回到探测器的时间，并通过精确控制闸控电路（103）实现对ICCD（119）接收闸门的开关动作，实现对目标点（100）上的拉曼散射光成像ICCD（119），系统同时实现对目标点的点对点红外焦平面探测器（113）成像和颗粒物反射CCD（112）成像。该系统可以遥测用于对目标点的气体成分、颗粒物大小及温度。

Description

一种红外、拉曼和激光三通道点对点实时融合的测量系统 技术领域
本发明涉及一种红外、拉曼和激光三通道点对点实时融合的测量系统，尤其是涉及一个在壳体内包含有一个深紫外激光激光器，激光成像CCD、一个闸控电路，以及该电路所控制的拉曼散射光成像ICCD、红外交平面探测器所构成的可以实现点对点融合的三通道测量系统。
背景技术
目前人们对大气污染物的测量是通过抽气取样的办法，采用气相色谱，质谱联用，远红外吸收光谱仪,近红外吸收光谱仪,气体传感探测器等对污染物进行检测。这些传统测量是必须将物料取样后再引入到遮光的观察腔体内才能进行测量。测量速度慢，对一些高温区域就无法采样，对大气中就根本无法实现对特征污染物、颗粒物和温度的点对点融合测量，更不能在大气环境下分层次测量。
目前我们所见到的与拉曼测量有关的发明专利有：专利公开号107449767A，授权公告号:104713865B，授权公告号:104713865B等，这些专利一是不能在大气中实现三通道点对点融合测量，更无法实现分层测量和大气中的远距离的遥测，这些仪器的测量距离短，甚至只能在真空室的环境中进行。
发明内容
为了实现在大气环境下，远距离分层的测量、以及实现对颗粒物大小、成分、温度三通道点对点融合遥测，本发明是采用一个深紫外激光器，它的激光波长是266nm的紫外激光，该266nm激光可以在日光环境下不 作屏蔽测量直接测量探测物,并实现对目标物的深紫外激光CCD成像，该深紫外激光也不会穿透眼球到达视网膜致盲。
所述的一种红外、拉曼和激光三通道点对点实时融合的测量系统能同时测量目标物的拉曼散射信号。它是通过一个精确控制的闸控电路来实现对ICCD接收闸门的开关动作，使拉曼散射信号到达接收器时，在纳秒量级的开关速度上，实现ICCD闸门的开关动作，这样就有效的避免了大气背景光对拉曼信号的噪声干扰，实现对目标点上特征物成分的拉曼散射光谱成像。
所述的一种红外、拉曼和激光三通道点对点实时融合的测量系统还能同时通过红外滤光片，测量获得目标物的红外信号，实现在一个红外红焦平面的热成像。
所述的一种红外、拉曼和激光三通道点对点实时融合的测量系统的三通道信号可以分别成像或点对点融合成像在显示屏幕上。
本发明是结合深紫外激光测距技术、闸控电路控制技术，以及红外焦平面技术实现对目标点在大气环境下的点对点融合测量，以及实现分层测量。该系统操可以实现实时测量，测量速度快，设备操作灵活，可以广泛用于对工业生产线的污染物泄露在线监控和预警、用于对大气污染的实时测量、以及对爆炸物等有毒有害气体的远距离遥测。
附图说明
下面结合附图对本发明进一步的描述。
图1为本发明实施例一种红外、拉曼和激光三通道点对点实时融合的测量系统结构示意图。
具体实施方式
参照附图1为本发明实施例一种红外、拉曼和激光三通道点对点实时融合的测量系统结构示意图。该系统是由一个深紫外激光器(101)、闸控电路(103)，拉曼光成像ICCD(119)，激光成像CCD(112)，红外交平面探测器(113)，以及对应的拉曼长通滤光片(114)、紫外激光滤光片(111)、红外滤光片(116)等组成；该系统使用激光测距来标测目标点的距离,通过计算激光飞到目标点及回到探测器的时间，并通过精确控制闸控电路实现对ICCD接收闸门的开关动作，实现对目标点上的拉曼散射光成像ICCD(119)，同时实现目标点上的红外红焦平面探测器成像(113)和颗粒物反射激光成像CCD(112)。
参照附图1，深紫外激光器(101)所采用的波长是266nm的紫外激光，该266nm激光可以在日光环境下不作屏蔽测量直接测量探测物,并实现激光成像CCD，该紫外激光也不会穿透眼球到达视网膜致盲。相对应的系统组件有：光阑(102)、反射镜(104)、反射镜(105)、次镜(106)、主镜(108)、聚焦镜(110等)、二向色镜(109)、深紫外滤光镜(111)，最后成像在深紫外激光CCD(112)上。
参照附图1，该系统能同时测量目标物(100)的拉曼散射信号，是通过一个精确控制的闸控电路(103)来实现对ICCD(119)接收闸门(118)的开关动作，实现对目标点(100)上的拉曼散射光ICCD成像的。该拉曼散射激光是通过二个二向色镜(109)、拉曼长通道滤光片(114)以及聚焦镜后进入到一个与狭缝匹配的多光纤阵列(117)、该光纤阵列(117)是一个能拉曼光无衰减的一种光纤阵列，拉曼光再成像到ICCD(119)上。该ICCD是一个面阵CCD。
参照附图1，该系统还能同时测量目标物(100)的红外信号，是通过红外滤光片(116)实现红外红焦平面探测器(113)成像。
参照附图1，该系统的三通道信号可以分别成像或点对点融合成像在显示屏幕(115)上。
上面参考附图结合具体的实施例对发明进行了描述，然而，需要说明的是，在不脱离本发明的精神和范围的情况下，可以对上述实施例作出许多改变和修改，这些改变和修改都落在本发明的权利要求限定的范围内。

Claims (5)

  1. 一种红外、拉曼和激光三通道点对点实时融合的测量系统，该系统包括一个深紫外激光器，闸控电路，拉曼光成像ICCD，激光成像CCD，红外交平面探测器，以及对应的拉曼长通滤光片、紫外激光滤光片、红外滤光片等；该系统使用激光测距来标测目标点的距离,通过计算激光到达目标点以及返回到探测器的时间，并通过精确控制闸控电路实现对ICCD接收闸门的开关动作，实现对目标点上的拉曼散射光成像ICCD，系统同时实现对目标点的点对点红外焦平面探测器成像和颗粒物反射激光CCD成像。
  2. 根据权利要求1所述的一种红外、拉曼和激光三通道点对点实时融合的测量系统，其特征在于：该系统包括一个深紫外激光器，它所采用的波长是266nm的紫外激光，该266nm激光可以在日光环境下不作屏蔽测量直接测量探测物,并实现深紫外激光CCD成像，该紫外激光也不会穿透眼球到达视网膜致盲。
  3. 根据权利要求1所述的一种红外、拉曼和激光三通道点对点实时融合的测量系统，其特征在于：该系统能同时测量目标物的拉曼散射信号，是通过一个精确控制的闸控电路来实现对ICCD接收闸门的开关动作，实现对目标点上的拉曼散射光ICCD成像。
  4. 根据权利要求1所述的一种红外、拉曼和激光三通道点对点实时融合的测量系统，其特征在于：该系统还能同时测量目标物的红外信号，实现红外红焦平面成像。
  5. 根据权利要求1所述的一种红外、拉曼和激光三通道点对点实时融合的测量系统，其特征在于：该系统的三通道信号可以分别成像在显示屏幕上。
PCT/CN2019/073134 2018-01-25 2019-01-25 一种红外、拉曼和激光三通道点对点实时融合的测量系统 WO2019144925A1 (zh)

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