A detection device and detection method of atmospheric particle concentration
An atmospheric particle and detection device technology, which is applied in measurement devices, particle suspension analysis, suspension and porous material analysis, etc. The device has a simple structure and realizes the effect of miniaturization
Active Publication Date: 2018-12-07
JIANGSU SUJING GROUP
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Problems solved by technology
The filter weighing method takes a long time to measure and cannot realize online automatic measurement
The micro-oscillating balance method and the β-ray method can realize online automatic measurement. However, the instrument has a complex structure, a relatively large volume, and is not easy to carry. It is only suitable for detection in fixed places such as laboratories and monitoring stations.
The light scattering method is convenient for measurement and small in size, but the measurement error is relatively large
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[0033] The present invention will be described in further detail below in conjunction with specific examples. It should be understood that these embodiments are used to illustrate the basic principles, main features and advantages of the present invention, and the present invention is not limited by the scope of the following embodiments. The implementation conditions used in the examples can be further adjusted according to specific requirements, and the unspecified implementation conditions are usually the conditions in routine experiments.
[0034] As shown in the figure, it is an air particle detection device according to the present invention. The detection device includes a substrate 100, a resonator 200 for collecting atmospheric particles arranged on the upper side of the substrate 100, and a resonator 200 arranged on the substrate 100. The first reflector 101 on the resonator 200 includes a resonator plate 201, a second reflector 202 arranged on the resonator plate 20...
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The invention relates to an atmospheric particle concentration detection device and detection method. The detection device comprises a substrate, a resonance plate for collecting atmospheric particles, a first reflector arranged on the substrate, a second reflector arranged on the resonance plate, and a support beam for connecting the substrate and the resonance plate; wherein an optical beam interference cavity is formed between the first reflector and the second reflector, the support beam can be deformed by an alternating current (AC) driving voltage so as to vibrate the resonance plate, and incident light goes through the first reflector and the second reflector, is reflected by the surface of the second reflector, and is converted into reflective light. The change of mass of atmospheric particles accumulated on the resonance plate can be calculated according to the change of resonance frequency, and thus the concentration of atmospheric particles can be calculated. The miniaturization of PM2.5 detection instruments is achieved, and at the same the shortage that the measurement error of the conventional light scattering method is large is overcome.
Description
technical field [0001] The invention relates to a detection device and a detection method of atmospheric particle concentration, in particular to a PM2.5 mass concentration detection device and detection method. Background technique [0002] It is one of the main indicators to measure the degree of air pollution. At present, the detection methods of PM2.5 mainly include filter membrane weighing method, micro-oscillating balance method, β-ray method and light scattering method. The filter weighing method takes a long time to measure and cannot realize online automatic measurement. The micro-oscillating balance method and the β-ray method can realize online automatic measurement. However, the instrument has a complex structure, a relatively large volume, and is not easy to carry. It is only suitable for detection in fixed places such as laboratories and monitoring stations. The light scattering method is convenient for measurement and small in size, but the measurement error...
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IPC IPC(8): G01N15/06
Inventor 孙吉勇梁凤飞唐红阳苏玉芳周大农
Owner JIANGSU SUJING GROUP