Patent ID: 9354130
Filing Date: 2016-05-31
CPC Classification: B62D,G01L

Claim Text:
1. A measuring device for a steering wheel torque, comprising: a magnetic pole located on a rotating shaft of the steering wheel; a magnetic sensor for measuring the displacement of the magnetic pole, the magnetic sensor fixed on the rotating shaft of the steering wheel; a first coil and a second coil, the second coil wound on a flexible shaft or the rotating shaft of the steering wheel and configured to rotate therewith, the first coil surrounding the second coil and fixed such that it can not rotate with the flexible shaft or the rotating shaft; an oscillation exciting circuit comprising two output terminals coupled to respective ends of the first coil; a control circuit including an output terminal coupled to the second coil; a decoding circuit having two ends coupled to respective ends of the first coil and an output terminal coupled to a power steering motor control circuit; a power supply circuit comprising: a detection circuit including an analog to digital conversion terminal coupled to an output terminal of the magnetic sensor and an output terminal coupled to an input terminal of the control circuit.