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A method for monitoring toxic substances in water by using fish action potential power changes

A technology of active potential and toxic substances, applied in the direction of testing water, measuring devices, instruments, etc., can solve the problems of accuracy limitation, achieve the effect of improving accuracy, eliminating monitoring errors, and improving poison sensitivity

Active Publication Date: 2018-03-27
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Significant changes in the movement of fish (flipping, hitting the tank, avoiding poison) necessarily require an increase in the concentration of the poison, which is a limitation on the accuracy of the system

Method used

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  • A method for monitoring toxic substances in water by using fish action potential power changes
  • A method for monitoring toxic substances in water by using fish action potential power changes
  • A method for monitoring toxic substances in water by using fish action potential power changes

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Embodiment Construction

[0027] Below in conjunction with embodiment the present invention will be further described.

[0028] Such as figure 1 As shown, a method for monitoring toxic substances in water by using fish activity potential power changes includes the following monitoring steps:

[0029] Step (A), measure the electrical signal f(t) of the fish activity in the water, the activity of the fish is divided into breathing movement and swimming movement according to the frequency, and set the swimming movement signal frequency f 1 Range is [x 0 , x 1 ], respiratory motion signal frequency f 2 Range is [x 2 , x 3 ], the constant ratio of swimming exercise efficiency is a, the constant ratio of breathing exercise efficiency is b, and the toxin alarm range is greater than θ, x 0 , x 1 , x 2 , x 3 is a constant;

[0030] Among them, the signal period of fish activity electrical signal f(t) is T; intercept from f(t) A section of , get a truncated function f T (t), performing Fourier trans...

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Abstract

The present invention discloses a method for monitoring the water quality by using fish bioelectrical signal spectrum change. According to the present invention, two kinds of collected fish activity electric signals are analyzed, and the change of the ratio of the powers of the fish breathing exercise and the fish swimming exercise to the total exercise power is adopted as the judging basis so as to identify the harm degree of the toxic substances on the water body; and with the method, the sensitivity of the system to the poison can be improved while the measurement error due to the individual difference of the fish and the like can be effectively eliminated, and the external equipment is not needed so as to further improve the precision of the system.

Description

technical field [0001] The invention belongs to the technical field of water quality monitoring in environmental protection, and in particular relates to a method for monitoring toxic substances in water by utilizing changes in fish action potential power. Background technique [0002] As the top organism of the aquatic food chain, fish's life behavior is an important indicator for monitoring water quality toxicity. Fish are very sensitive to changes in the water environment. When the toxic substances in the water reach a certain concentration, they will cause a series of poisoning reactions. These reactions can be used to monitor whether the water is polluted by toxic substances. [0003] In [1], the change of activity potential (voltage value) of fish is the basis for the monitoring system to determine whether there are toxic substances in the water body. Due to the accuracy of the system for extracting bioelectrical signals, the system can only use fish with specific bod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/18
CPCG01N33/186
Inventor 杨凌升纪明
Owner NANJING UNIV OF INFORMATION SCI & TECH