Multifunctional special-shaped electric bridge

An electric bridge and special-shaped technology, which is applied in the field of multi-functional special-shaped electric bridges, can solve the problems of complicated measurement and adjustment circuits, etc.

Inactive Publication Date: 2010-03-10
JIANGSU RYAN ELECTRIC LTD BY SHARE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] With the development of technology, electronic instruments and equipment present diversified requirements for electric bridges, requiring electric bridges to have multiple functions, such as: independent excitation of two bridge arms, simple and convenient measurement methods for voltage, current and power, and two bridges Different excitation power control for different arms, correlation calculation of resistance values ​​between multiple bridge arms, etc., but the Wheatstone bridge is difficult to meet the requirements, or the relevant measurement and adjustment circuits become very complicated in application

Method used

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  • Multifunctional special-shaped electric bridge
  • Multifunctional special-shaped electric bridge
  • Multifunctional special-shaped electric bridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0112] Such as Figure 17a The unipolar pair bridge shown is composed of a passive bridge trunk and a passive bridge branch. The output terminals x1 and x2 of the bridge trunk are respectively connected to the input terminals y1 and y2 of the bridge branch; the passive bridge trunk is composed of passive The bridge arm X is composed of a passive bridge branch composed of a proportional controller and a passive bridge arm Z; the output terminal d2 of the controller is connected to the excitation terminal z2 of the bridge arm Z, and the output terminal d1 of the controller is connected to the signal terminal of the bridge arm Z z1 constitutes a group of output terminals of the bridge and is externally connected with a sensitive ammeter Gk. When the ammeter Gk is zero, that is, the bridge is balanced, the relationship between the resistors R01 and R02 that make up the bridge arm X and the resistors R11 and R12 that make up the bridge arm Z is:

[0113] ...

Embodiment 2

[0140] Such as Figure 23a The bipolar pair bridge shown is composed of a source-controlled bridge trunk and a balanced bridge branch, the output terminals x1 and x2 of the bridge trunk are respectively connected to the input terminals y1 and y2 of the bridge branch; the source-controlled bridge trunk is composed of the source-controlled bridge The balanced bridge branch is composed of a proportional controller and a balanced bridge Z; the output terminals d1 and d2 of the controller are respectively connected to the follower terminal z1 and the main excitation terminal z2 of the bridge Z, and the signal terminal of the balanced bridge Z Z0 constitutes a group of output terminals of the bridge to the ground and is connected with a sensitive ammeter Gk. When the ammeter Gk is zero, that is, the bridge is balanced, the relationship between the resistors R01 and R02 that make up the bridge X and the resistors R11 and R12 that make up the bridge Z is:

[0141] ...

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Abstract

The invention relates to a multifunctional special-shaped electric bridge, belonging to the field of measurement technology, autocontrol technology and electronic equipment. A monopolar electric bridge and a bipolar electric bridge have four structural types of pair type, composite type, chain type and tree type respectively. The monopolar electric bridge comprises a resistor, a voltage-controlledcurrent source, a multiplier or a follower and the like. The bipolar electric bridge comprises a resistor, an operational amplifier, a multiplier or a follower and the like. When the electric bridgeis balanced, each bridge arm or bridge limb has the same resistance ratio. The voltage, the current and the power of a pressure flow bridge arm, a balanced bridge limb and a source-controlled bridge limb are extremely simple and convenient to be measured; a proportional controller leads the incitation of the bridge arms and the bridge limbs to be controlled independently; each bridge arm and eachbridge limb can obtain different controllable power; and the composite-type electric bridge, the chain-type electric bridge and the tree-type electric bridge can realize the relational operation of resistance values among a plurality of bridge arms and bridge limbs. The multifunctional special-shaped electric bridge is characterized by simple structure, abundant functions, wide applicable scope, convenient usage and the like, and has extremely high practical values.

Description

technical field [0001] The invention relates to a multifunctional special-shaped electric bridge, which belongs to the field of measurement technology, automatic control technology and electronic equipment, especially the field of electric bridge technology. Background technique [0002] The commonly used Wheatstone bridge is a simple unipolar pair passive bridge (such as figure 1 As shown), the Wheatstone bridge is a technology with a long history and is widely used, especially in the field of measuring instruments and equipment. [0003] The Wheatstone bridge is composed of two bridge arms, and each bridge arm is composed of two resistors connected in series. The bridge arm is connected between the excitation terminal and the ground terminal, and the excitation terminal is connected to the reference power supply. The midpoint of the bridge arm is The common end of the two series resistors is the signal end of the bridge arm. [0004] The principle of the Wheatstone bridg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R17/00
Inventor 朱明黄美菊张金龙刘宇光司霞
Owner JIANGSU RYAN ELECTRIC LTD BY SHARE LTD
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