Detection device and detection method for atmospheric particulate collecting filter membrane pinholes
A technology of atmospheric particulate matter and detection device, which is applied in measurement devices, material analysis by optical means, instruments, etc., can solve the problems of uneven quality and decrease in the accuracy of monitoring data, so as to improve product quality, facilitate quality management and improve the quality of products. control effect
Inactive Publication Date: 2015-05-20
TIANJIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
However, at present, the quality of domestic products is uneven. For example, the existence of small pinholes on the sampling filter membrane will directly lead to a decrease in the accuracy of monitoring data.
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[0021] A detection device for collecting filter film pinholes for atmospheric particulate matter, comprising a light source light emitting device, a filter film pinhole detection device, a photoelectric receiving device and a data acquisition system. The light source light emitting device is composed of a light emitting diode 1 and an adjustable steady current source 2 connected, The special interface 4 of the light-emitting device of the light source is connected to the special interface 5 for introducing light on the side wall of the filter film pinhole detection device through the incident optical fiber 3; the film pinhole detection device includes a stepping motor a7-Ⅰ, a stepping motor b7-Ⅱ, Stepping motor guide a8-Ⅰ, stepping motor guide b8-Ⅱ, stepping motor driver 9, stepping motor controller 10, receiving optical fiber 11, optical fiber holder 12, micro-displacement adjusting device 13, filter film 14 and filter The film fixing brackets 15 are all set in the light-proof ...
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A detection device for atmospheric particulate collecting filter membrane pinholes comprises a light-emitting device, a filter membrane pinhole detecting device, a photoelectric receiving device and a data acquisition system, wherein the light-emitting device is formed by connecting a light emitting diode and an adjustable constant-current source; the filter membrane pinhole detecting device comprises a step motor a, a step motor b, a step motor guide rail a, a step motor guide rail b, a step motor driver, a step motor controller, a receiving light-guide fiber, a light-guide fiber support, a micro displacement adjusting device, a filter membrane and a filter membrane fixing support which are all arranged inside a dark room; the photoelectric receiving device consists of a photoelectric receiver, an I / V converter, a power supply and a special input light interface; the data acquisition system comprises a data acquisition card and a computer. The detection device has the advantages as follows: the detection device can accurately detect the number and the sizes of small pinholes on the collecting filter membrane according to a photoelectric detection principle, so as to facilitate quality management and control of quality control personnel, improve product quality of the filter membrane, and provide a technical support for accurate monitoring of atmospheric particulates.
Description
Technical field [0001] The invention relates to a detection device for atmospheric particulate matter (PM) collection filter membrane, in particular to a detection device and a detection method for the pinhole of the atmospheric particulate matter collection filter membrane. Background technique [0002] The quality of PM2.5 and PM10 collection membranes is one of the key technologies to ensure the accuracy of PM monitoring results. At present, domestic PM2.5 and PM10 collection membrane products include quartz membranes, cellulose membranes, polypropylene membranes, and special Freon membrane, nylon membrane, polyvinyl chloride membrane, etc. However, the quality of current domestic products is uneven. For example, the presence of small pinholes on the sampling filter will directly cause the accuracy of monitoring data to decrease. How to quickly and accurately detect the number and size of the small pinholes on the sampling filter is a difficult problem that has not been solv...
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IPC IPC(8): G01N21/894
Inventor 王晓丽张嘉琪白志鹏杨文
Owner TIANJIN UNIVERSITY OF TECHNOLOGY