應變規線路StrainGageCircuits 前章有 xxg S R R ∈= ∆ (當 xxyy ∈−=∈285.0),為了求取 xx ∈,必須量gage的 R R∆ , 工業界中主要使用二種線路法(1)potentiometercircuit(電位計),(2)wheatstone bridgecircuit(喬氏電路)。其主要方式都是將電阻的改變用電位表示出(voltage E∆)。
Measuring Circuits In order to measure strain with a bonded resistance strain gage, it must be connected to an electric circuit that is capable of measuring the minute changes in resistance corresponding to strain. Strain gage transducers usually employ four strain gage elements that are electrically...
Because of their relatively low sensitivities (resistance changes nominally 0.1 to 1.0%), strain gages require bridge circuits to produce useful outputs. (We will discuss bridge circuits in Chapter 3.) If a second, identical strain gage, not under stress, is put into the bridge circuit, it ...
In a measuring arrangement comprising a strain gage section (10) constructed of at least one SG (strain gage) (15), and integrated in a measurement pickup (1), an additional circuit (20) amplifies modulated output signals of the SG section (10), and is also integrated in the measurement...
Each of the wheatstone bridge circuits has a strain gage mounted on the underside of the main deck or therein in a corresponding one of four areas of the perimeter being secured so that two strain gages of the system carry out intruder detection by imbalance of the corresponding bridges when...
(CCDs) REFERENCES SECTION 3.4: BRIDGE CIRCUITS INTRODUCTION AMPLIFING AND LINEARIZING BRIDGE OUTPUTS DRIVING REMOTE BRIDGES SYSTEM OFFSET MINIMIZATION REFERENCES SECTION 3.5: STRAIN, FORCE, PRESSURE AND FLOW MEASUREMENTS STRAIN GAGES 3.1 3.1 3.6 3.9 3.13 3.15 3.19 3.19 3.20 3.21 3.23 3.25 3.27 3.29 ...
s own proprietary Advanced Sensors Technology, from which a specialty arrangement of both shear and axial half-bridge circuits is configured and installed with a common carrier backing. Customers can choose from among multiple resistance values and gage patterns, in support of a diverse array o...
This chapter reviews the basic formulas of electrical resistance strain gages and related circuits, as well as some concepts that are not always emphasized in specialized books. Some sections of the chapter deal with the limits of the maximum and minimum values of the measurable strain, the ...
of the reflected pressure wave and of the transmitted pressure wave to be determined. The strain gages are interconnected in Wheatstone bridge circuits. Since the pressure waves run through the bars at the speed of sound, a very dynamic measurement system is required offering a correspondingly high...
beam causes the resistance of the strain gauge to change. The temperature compensating gauge compensates for the heat produced by current flowing through the fine wire of the strain gauge. Strain gauges, which are nothing more than resistors, are used with bridge circuits as shown in Figure A-...