Measuring method for non-gate-control liquid turbidity measuring device based on time correlation single photon counting

A single photon counting, time-dependent technology, applied in the measurement of scattering characteristics, etc., to achieve the effect of fast current growth, online real-time measurement, and improved measurement accuracy and stability

Active Publication Date: 2014-08-06
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI +1
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Problems solved by technology

[0016] The main purpose of the present invention is to provide a measurement method of non-gated liquid turbidity measurement device based on time-correlated single photon counting, to solve the deficienci

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  • Measuring method for non-gate-control liquid turbidity measuring device based on time correlation single photon counting
  • Measuring method for non-gate-control liquid turbidity measuring device based on time correlation single photon counting
  • Measuring method for non-gate-control liquid turbidity measuring device based on time correlation single photon counting

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[0049] The specific embodiments of the present invention will be described in further detail below in conjunction with the drawings and embodiments. The following examples are used to illustrate the present invention, but not to limit the scope of the present invention.

[0050] Such as figure 1 The illustrated schematic diagram of a non-gated liquid turbidity measurement device based on time-correlated single photon counting mainly includes a light source module 100, an optical path transmission module 200, a photoelectric conversion and signal processing module 300, a control module 400, a signal generation module 500 and Standard turbidity liquid 11; the light source module 100 includes a light source control module 101 and a light source 102; the optical path transmission module 200 includes a first lens 201A, a second lens 201B, a band pass filter 202, and an aperture 203; The photoelectric conversion and signal processing module 300 includes a single photon detection modu...

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Abstract

The invention discloses a measuring method for a non-gate-control liquid turbidity measuring device based on time correlation single photon counting. The non-gate-control liquid turbidity measuring device comprises a light source module, a light path transport module, a photovoltaic conversion and single processing module and a standard turbidity liquid. According to the method, after being subjected to modulation by a high-speed narrow pulse, a light source acts on the standard turbidity liquid, after being received, 90-degree scattered lights of the standard turbidity liquid act on the photovoltaic conversion and single processing module to obtain a statistical histogram of photo count values and light flight time, and characteristic parameters on the statistical histogram are extracted; the measuring device is calibrated according to a characteristic parameter acquiring method to obtain inherent parameters of the device; during practical measurement, a turbidity value of a liquid to be measured can be obtained after corresponding characteristic parameters obtained through statistical measurement as well as the inherent parameters of the device are subjected to inversion, so that the accurate measuring of the liquid turbidity can be realized. According to the method, the structure of the device is simple, the stability is high, the realization is easy, the measurement accuracy is high, the measuring speed is high, the real-time performance is good, and a technical support is provided for on-line water quality monitoring in real time.

Description

technical field [0001] The invention relates to a measurement method of a non-gated liquid turbidity measurement device based on time-correlated single photon counting, and belongs to the technical field of environmental monitoring. Background technique [0002] Turbidity is a comprehensive index to measure water quality, and it is also an important index to monitor water pollution and eutrophication. At present, turbidity is widely used as a sign of water purification effect in various countries. Although inorganic substances and silt in water are not necessarily directly harmful to health, they can absorb bacteria, viruses and parasites, which is a potential unsafe factor. Some data show that the incidence of viral infectious diseases tends to increase as the turbidity of filtered water increases. Research conducted by the US National Environmental Protection Agency (USEPA) has shown that reducing the turbidity of factory water to 0.5NTU can greatly reduce the spread of ...

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Application Information

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IPC IPC(8): G01N21/49
CPCG01N21/49
Inventor 王焕钦杨义新黄哲桂华侨刘建国曹会彬王杰程寅
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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