Multiport impedance model construction method based on living body electric shock impedance parameter calculation

Abstract

The invention provides a multiport impedance model construction method based on living body electric shock impedance parameter calculation. The multiport impedance model construction method comprises the following steps: collecting multiple groups of low-voltage power distribution network living body electric shock signals of a living body test object under situations of complete skin and broken skin; according to the living body electric shock signals, obtaining a living body electric shock impedance parameter; according to the living body electric shock impedance parameter, utilizing a nonlinear time varying resistor and a capacitor element to establish a test living body electric shock impedance circuit model, and describing the transient state transition process of the living body electric shock; and according to the living body electric shock impedance circuit model, on the basis of an extrapolation method, obtaining the multiport impedance model of the living body electric shock. The method can calculate the living body electric shock impedance parameter and establish the multiport impedance model, which has high response accuracy, of the living body electric shock, and realizes the precise description of the transient state transition process of the living body electric shock under the power frequency situation of the low-voltage power distribution network.

Description

technical field [0001] The invention relates to the technical field of electrical engineering, in particular to a method for constructing a multi-port impedance model based on the calculation of biological contact impedance parameters. Background technique [0002] Electric shock accidents are relatively common vicious accidents. At present, the simulation of electric shock phenomenon lacks the research and description of the electric shock impedance model of organisms. In the low-voltage distribution network, the direct physical factor considered in the electric shock accident is the power frequency electric shock current flowing through the organism, and the amplitude of the electric shock current is directly affected by the electric shock impedance of the organism. When an electric shock accident occurs, the organism can be equivalent to a circuit combination. Usually, two impedances are used to describe the electric shock path impedance: internal impedance and contact s...

AI Technical Summary

Problems solved by technology

The current electric shock circuit model of living organisms is usually constructed by constant impedance elements, its scope of application has certain limitations, and it cannot meet the accuracy requirements for describing the transient transition process of electric shock in living organisms

Images