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Multi-channel salinity online measuring system

A measurement system and multi-channel technology, applied in the field of online automatic measurement of multi-point salinity, to reduce the impact, reduce the impact of flow field characteristics, and reduce the cost

Inactive Publication Date: 2012-11-14
闫瑞杰 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] 1. Overcome the shortcomings of traditional salinity measuring instruments that can only be used for single-point measurement, solve the problem of multi-point measurement of salinity in scientific research and experiments, and meet the needs of scientific research and experiments

Method used

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Embodiment Construction

[0036] The specific implementation and process of the present invention will be described in more detail below in conjunction with the accompanying drawings. The following examples are used in the present invention, but are not intended to limit the scope and form of the present invention.

[0037] figure 1 The overall principle structure diagram of the present invention is shown. This multi-channel salinity online measurement system includes sine signal generation circuit 1, channel selection circuit 2, signal amplification circuit 3, A / D conversion circuit 4, microcontroller 5, power supply 6, local operation 7, and RS-485 communication network 8. RS-485 / RS-232 conversion circuit 9.

[0038] System power supply 6 is 5V DC power supply; local operation 7 can carry out system calibration on the spot; 10 is the connection terminal, connected to the measuring electrode; RS-485 / RS-232 conversion circuit is used to connect with the computer to perform RS-485 / RS -232 bidirectiona...

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Abstract

The invention relates to a multi-channel salinity online measuring system, belonging to the technical field of automatic detection. The automatic measuring system capable of simultaneously measuring multi-point salinity comprises a sinusoidal signal generating circuit, a channel selection circuit, measuring electrodes, a signal collection conversion circuit, a microcontroller circuit, a remote communication circuit and computer application software. Full-wave sampling is carried out on measuring signals, and the area of a region encapsulated by the wave period is derived by a microcontroller and is in direct proportion to the salinity to realize high-precision salinity measurement. Multi-point salinity measurement is realized by the unique channel selection circuit, the measuring signal is remotely transferred by the remote communication circuit, data and drawing curves are automatically stored by the application software, and the influence on the flow field of a fluid to be measured is greatly lessened by the designed ultrafine measuring electrodes. The multi-point salinity measuring system has low cost and high precision and can be widely applied to scientific research and experiments.

Description

technical field [0001] The invention relates to fluid salinity measurement and belongs to the technical field of automatic detection, in particular to online automatic measurement of multi-point salinity, and the designed ultra-fine measurement electrode greatly reduces the influence on the measured fluid flow field. It is mainly used in scientific research and experimental engineering fields such as ion emission detection, hydraulic characteristics, and water quality monitoring of nuclear power plants and thermal power plants. Background technique [0002] In many scientific research and experimental engineering applications, it is necessary to study the hydraulic characteristics of fluids, for example, the hydraulic characteristics of thermal discharge of thermal power plants, the hydraulic characteristics of thermal discharge of nuclear power plants, etc. Salinity is a very important parameter in the study of fluid hydraulic characteristics. It is necessary to measure the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/416G01N27/30
Inventor 闫瑞杰田淳李海香李利全
Owner 闫瑞杰
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