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    • 6. 发明授权
    • Strain gauge temperature compensation system
    • 应变计温度补偿系统
    • US3665756A
    • 1972-05-30
    • US3665756D
    • 1968-08-01
    • MICRODOT INC
    • RUSSELL JOHN D
    • G01L1/22G01B7/16G01N3/00
    • G01L1/2281
    • This invention relates to a system for measuring strains in a member and providing an indication of such strains. The system includes at least one strain gauge connected in a bridge with other resistance members, preferably strain gauges, to compensate for temperature changes. The bridge is provided with characteristics to maintain a constant current from a source of constant voltage even when the member is subjected to a variable strain. The output voltage from the bridge provides an indication of such variations in strain. Preferably the resistors in the bridge constitute strain gauges which are connected to the member so that some of the strain gauges become stressed and others become strained when the member is stressed or strained. In one embodiment, one of the strain gauges becomes strained with changes in temperature but is not affected by stresses or strains in the member being measured. Additional resistors may also be included in the bridge to provide additional compensations for temperature changes.
    • 本发明涉及一种用于测量成员中的菌株并提供这种菌株的指示的系统。 该系统包括至少一个应变计,该应变计连接在与其它电阻构件(优选应变计)的桥中,以补偿温度变化。 即使在构件经受可变应变时,该桥具有保持来自恒定电压源的恒定电流的特性。 来自桥梁的输出电压提供了这种应变变化的指示。