Automatic sample handling system and control method thereof

Abstract

The invention provides an automatic sample feed system and a control method thereof. The automatic sample feed system comprise an automatic sample feed device and a control circuit thereof, wherein the automatic sample feed device comprises a sample pool, an agent pool, a three-way connector, a three-way electromagnetic valve, a sample mixing pool device and relative driving and controlling devices. According to a preset control program of the control circuit, the water sample of the sample pool and the agent of the agent pool are fed by peristaltic pumps to pass the three-way connector and the three-way electromagnetic valve to be filled into a sample mixing pool of the sample mixing pool device, and the injection pump head of the sample mixing pool device feeds the reacted mixture sample of the mixing sample pool via the three-way electromagnetic valve to enter into a detection device to process trace element and nutrient colorimetric analysis tests. The invention relates to the technical problems of the prior art such as automatic accurate proportioning of the trace elements and the nutrients of water in on-site online automatic colorimetric detection, sample feed and mixing reaction, to realize online detection on the trace elements and the nutrients of water.

Description

technical field [0001] The invention relates to an automatic sampling device and a control method thereof, in particular to an automatic sampling and mixing device and a control method of water samples and reagents for online automatic detection of trace chemical elements in a water body. Background technique [0002] In order to facilitate routine monitoring in marine biogeochemical research, researchers have gradually transferred the analysis of chemical elements in seawater from the laboratory to the field. The injection method of the reagents and reagents is manual injection, and the sample mixing reaction process and reaction time are manually controlled. This method must have the intervention of staff, and is not suitable for online analysis of chemical elements on site. For the on-site online measuring instrument, all sample injection and mixing reaction processes must be completed automatically without human participation. The automatic sample injection and mixing re...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide an automatic sampling system and its control method for automatically controlling water samples and reagents to enter the mixed sample pool in proportion, to mix and react in the sample pool, and to send the reacted sample into the colorimetric measurement unit. Solve a series of technical problems such as automatic sampling of water samples and reagents and automatic control of the mixed reaction process in the online colorimetric measurement and analysis of trace elements and nutrients in water, and improve the accuracy and stability of online measurement and analysis technology

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