The study of signal transmission characteristic in airborne particle counter
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Department of Information Physics and Engineer, Nanjing University of Science and Technology, Nanjing 210094, China
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Corresponding author:
LU Jian, lujian@mai.lnjus.tedu.cn
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Received Date:
2007-01-22
Accepted Date:
2007-03-27
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Abstract
In order to study the essential characteristic of airborne particle counter signal transmission,some basic characteristics of airborne particle counter are studied with proceeding from single particle signal,including collecting characteristic of scattered light and photoelectric transfer characteristic.Based on these,statistics characteristic of signal distribute of single particle group and signal transmission characteristic of mixed particles group were analyzed.At the same time,the experiment was performed and the result is consistent with the theory with the correlation coefficient more than 0.9.Results indicate the essence of airborne particle counter signal transmission is changing particle's diameter distribute way to corresponding pulse signal amplitude distribute way with linear transform.All these establish the theoretical foundation for promoting the instrument's development toward the large flow and high sensitivity.
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