Patent ID: 9103695
Filing Date: 2015-08-11
Classification: G01D

Abstract:
1. A detection circuit for detecting signals produced by a bridge circuit sensor, comprising: an amplifier circuit, configured to amplify the signals produced by the bridge circuit sensor and output an output voltage Vo corresponding the signals; a first resistor R a first comparator comprising a first inverting input port, a first non-inverting input port, and a first output port; a second comparator comprising a second inverting input port, a second non-inverting input port, and a second output port; a rechargeable unit comprising a first terminal and a second terminal, wherein, the first terminal is electrically connected to the amplifier circuit via the first resistor R a reference voltage providing circuit, connected to the first non-inverting input port of the first comparator and the second inverting input port of the second comparator, configured to provide a first reference voltage Vref a discharge switch, connected between a voltage port VCC and a connection node of the first resistor R a processing unit, connected to the discharge switch and the second output port of the second comparator; wherein, when the detection circuit receives the signals from the bridge circuit sensor, the processing unit controls the discharge switch to turn on, the rechargeable unit is discharged via the first resistor R