Demonstration instrument for addition and subtraction characteristics of electrical bridge

A technology of a demonstrator and an electric bridge, which is applied in the field of electric bridge addition and subtraction characteristic demonstrators, can solve problems such as difficulty in understanding the experiment of electric bridge addition and subtraction characteristics.

Inactive Publication Date: 2013-01-30
CHANGCHUN UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a bridge addition and subtraction characteristic demonstrator to solve the prob

Method used

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  • Demonstration instrument for addition and subtraction characteristics of electrical bridge
  • Demonstration instrument for addition and subtraction characteristics of electrical bridge
  • Demonstration instrument for addition and subtraction characteristics of electrical bridge

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Experimental program
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Embodiment Construction

[0028] According to the addition and subtraction characteristics of the electric bridge, the present invention utilizes the large nixie tube to display the output strain value of the electric bridge, and the four small nixie tubes are the incremental resistance change values ​​of the four bridge arms, respectively using △R1, △R2, △R3, △R4 indicates that the resistance of the four bridge arms, that is, the strain gauges, are respectively controlled by the four strain gauge pasting position control buttons 33, and at the same time, the bridge circuit display unit 2 can display the method of forming the bridge through the four bridge arm light-emitting tubes , the resistance is the position and direction where the strain gauge is pasted in the component. The four loading buttons 43 respectively represent the four resistances, that is, the change in resistance after the strain gauge is stressed. According to the sticking position of the resistance, that is, the strain gauge and whe...

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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...

Claims

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Application Information

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IPC IPC(8): G09B23/18
Inventor 胡旭林
Owner CHANGCHUN UNIV OF TECH
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