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A Water Transparency Measurement Tool for Field Environment

A technology of water transparency and measurement tools, applied in transmittance measurement and other directions, can solve problems such as different observation angles and errors, and achieve the effect of reducing observation errors and subjective errors.

Active Publication Date: 2019-02-19
FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, when using black and white discs for measurement, it is usually necessary to stand on the boat and use the naked eye to observe the scale of the water surface tape. Different specifications of ships will lead to different observation angles between the line of sight and the tape measure, resulting in errors

Method used

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  • A Water Transparency Measurement Tool for Field Environment

Examples

Experimental program
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Effect test

Embodiment Construction

[0017] like figure 1 Shown is a water transparency measurement tool for outdoor environments, including a black and white disk 11 , a telescopic cylinder 5 , a light reinforcement lighting device 4 , and a handle 1 .

[0018] (1) A black and white disc 11 with a diameter of 20 cm. The black and white disc 11 is divided into four black and white parts. Four small holes 9 with a diameter of 1 cm are distributed on the black and white disc 11 . The small hole 9 on the black 1 / 4 disc is located at 7cm from the center of the disc; the small hole 9 on the white 1 / 4 disc is located at 3cm from the center of the disc to reduce the resistance caused by the buoyancy of the water when entering the water , the center of black and white disk 11 is pendant with heavy hammer 10.

[0019] (2) The telescopic cylinder 5 is a single-layer polyester telescopic cylinder with a diameter of 10 cm. It is 40 cm in the contracted state and 200 cm in the stretched state. The inner wall of the single-la...

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Abstract

The invention discloses a water body transparency measuring tool for the field environment. The water body transparency measuring tool is characterized by comprising a hollow column, a black and white chequered disc at the bottom of the column, and a handle on the top of the column, scale marks are arranged on the inner wall of the column, a light induction emitting element and a corresponding light induction receiving element are oppositely arranged on the scale marks, a control device and a display device are arranged on the water body transparency measuring tool, the control device is used for controlling the light induction emitting element and the corresponding light induction receiving element to work, and the display device is used for displaying the working states of the light induction emitting element and the corresponding light induction receiving element. The water body transparency measuring tool has the advantages that the influences of water flow and wind waves on transparency observation are reduced, the subjective errors caused by angle observation during far-distance manual reading are reduced, and observation errors caused by illumination intensity differences due to weather causes are reduced.

Description

technical field [0001] The invention belongs to the technical field of water body measurement, and in particular relates to a water body transparency measurement tool for the field environment, which is applied to the measurement of the transparency of natural water bodies or aquaculture water bodies in the field, and uses the transparency data to evaluate the comprehensive nutritional status of the water body in the research water area. Investigate the ecological environment assessment and protection of water bodies. Background technique [0002] In the water quality assessment system of natural water bodies, transparency is an indispensable and important indicator. The level of transparency can roughly reflect the abundance of plankton in the water body and the fertility of the water quality. The comprehensive nutritional state index is calculated by measuring the transparency of the water body, so as to evaluate the comprehensive nutritional state of the research water bo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/59
Inventor 杨彦平刘凯徐东坡段金荣周彦锋
Owner FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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