Current detection compensation circuit and device for shunt
The invention relates to a current detection compensation circuit and device for a shunt. The circuit comprises a temperature detection circuit (101), a compensation control circuit (102) and a gain compensation circuit (103), wherein the temperature detection circuit (101) is used for measuring a w...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention relates to a current detection compensation circuit and device for a shunt. The circuit comprises a temperature detection circuit (101), a compensation control circuit (102) and a gain compensation circuit (103), wherein the temperature detection circuit (101) is used for measuring a working temperature interval of a shunt resistor (Rsh); the compensation control circuit (102) is used for controlling the gain compensation circuit (103) to adjust a gain compensation coefficient according to the working temperature interval; and the gain compensation circuit (103) is used for compensating the resistance drift of the shunt resistor (Rsh) due to temperature rise. Through the circuit and the device, drifting generated by temperature rise when the shunt works can be compensated, so that the precision and the accuracy of current measurement of the shunt are improved.
本发明涉及一种电阻分流器电流检测补偿电路及装置。该电路包括:温度检测电路(101)、补偿控制电路(102)和增益补偿电路(103),所述温度检测电路(101)用于测量电阻分流器(Rsh)的工作温度区间;所述补偿控制电路(102)用于根据所述工作温度区间控制所述增益补偿电路( |
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