Self-recovery type water sampler control device

Abstract

The present invention relates to an auto-return type water sampler controlling device for a water sampler, which comprises a single chip microcomputer with its input terminal being connected to a pressure sensor through a level shifter and its output terminal being connected to a water sampler counterweight control circuit as well as a water sampling tank turnoff control circuit in a water sampler, wherein a dry battery or rechargeable battery is utilized as the working power of said control device, which is output to the single chip microcomputer, the level shifter, the water sampler counterweight control circuit and the water sampling tank turnoff control circuit, through a voltage stabilizing block. According to the present invention, a cable is not necessary during the put-in and callback of a water sampler, then some problems, such as depth illegibility, trips of castoff and plant roots in water and the destroying effect of a mechanical pump on an objective to be researched which are caused by a cable, are avoided; manpower participance during a water sampling operation course is not necessary, a depth gradient water sampling dautomatization is achieved; said device exhibits credible performances and has practical values.

Description

technical field [0001] The invention relates to an automatic control device of an underwater sampling device, in particular to an automatic returnable water sampling device control device for sampling at a predetermined depth in a water area without cables. Background technique [0002] Marine environmental pollution monitoring, hydrophysical observations, seawater chemical and geological surveys, and biological sampling require on-site water sampling in most cases. That is to use a water collector to collect a certain volume of water samples under certain conditions from the target sea area, and then analyze them with corresponding instruments and equipment on board or in a land laboratory. [0003] Due to different research purposes, the collection requirements of seawater samples are different. Sometimes it is necessary to take samples sequentially at different depths to obtain the on-site water body information of the gradient profile, so as to ensure the unity, standar...

AI Technical Summary

Problems solved by technology

However, in the prior art, the water sampling bottle relies on the winch to adjust its sampling depth in seawater, and the inclination of the steel wire rope is uncontrollable due to the influence of the ocean current, so it is easy to bring about the problem of inaccurate sampling depth; More cumbersome and time-consuming than operating a hammer

If a pump is used, then not only do you have to find ways to ensure power, but the mechanical force of the pump will also destroy the key flocs in the study, etc.

In addition, when the water collection device with a cable collects water samples in shallow water or in special waters with dense growth, it often encounters waste or plant roots suspended in the water.

If an electronically controlled water collector is used, the cables must be put in at the same time, which not only consumes a lot of power, but also is inconvenient to use

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