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CIRCUIT CONFIGURATION FOR COMPENSATING THE TEMPERATURE NON-LINEARITY OF THE CHARACTERISTIC CURVES OF THE PIEZORESISTIVE MEASURING RESISTORS CONNECTED IN A BRIDGE CIRCUIT
CIRCUIT CONFIGURATION FOR COMPENSATING THE TEMPERATURE NON-LINEARITY OF THE CHARACTERISTIC CURVES OF THE PIEZORESISTIVE MEASURING RESISTORS CONNECTED IN A BRIDGE CIRCUIT
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机译:补偿桥电路中连接的压阻测量电阻器特性曲线的温度非线性的电路配置
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摘要
A circuit arrangement is described for compensating temperature non-linearity of the characteristics of piezoresistive, metallic or polycrystalline resistors (bridge resistors) connected in a bridge circuit, the non-linearities being caused by non-linearities of the resistors, in particular due to the physical quantities affecting the bridge circuit (temperature, pressure, bimetal effects, non-linear membrane stresses), and the resistors being composed of partial resistors having different temperature coefficients, with each of the partial resistors having a certain linear and non-linear temperature response. The partial resistors of each bridge resistor are selected on the basis of their known linear and non-linear temperature characteristics so that an asymmetric layout of the bridge circuit is obtained and a non-linear variation of a bridge output voltage of the circuit arrangement can be essentially compensated.
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