Demonstration instrument for addition and subtraction characteristics of electrical bridge

Abstract

The invention provides a demonstration instrument for addition and subtraction characteristics of an electrical bridge, and belongs to mechanical and electric components. The demonstration instrument comprises a numerical value display unit, a bridge type circuit display unit, a test component strain gauge position display unit and an operation unit, wherein the numerical value display unit comprises a stain value display module and a resistance increase value display module; the bridge type circuit display unit comprises a bridge type circuit display pattern; the strain gauge position display unit comprises a test component strain gauge position schematic diagram region, four forced direction control buttons and four strain gauge adhesion position control buttons; and the operation unit comprises a power switch, a zero setting button, a loading button, a graph transformation gear and a graph structure switch. By electrical bridge demonstration, the adhesion position and the direction of a strain gauge are directly related to the output characteristics of the electrical bridge when the strain of a certain component is measured in an electronic logging experiment, and the addition and subtraction characteristics of the electrical bridge, the practicability of a bridging method and the practicability of a connecting method of the resistance strain gauge in a bridge circuit can be observed clearly.

Description

technical field [0001] The invention relates to electromechanical devices, and aims to provide a bridge addition and subtraction characteristic demonstrator, especially a bridge addition and subtraction characteristic demonstrator which can clearly and visually demonstrate the addition and subtraction characteristics of an electric bridge. Background technique [0002] In mechanical engineering, material engineering, electrical automation and other majors, electrical measurement experiments are required, but in electrical measurement experiments, it is difficult for students to understand the method of building bridges for the addition and subtraction characteristics of the bridge, and the single-point measurement of a force, half Measurement technique methods for bridge and full bridge measurements. Contents of the invention [0003] The purpose of the present invention is to provide a bridge addition and subtraction characteristic demonstrator to solve the problem that t...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a bridge addition and subtraction characteristic demonstrator to solve the problem that the bridge addition and subtraction characteristic experiment is difficult to understand in the electrical measurement experiment

Images