GOERTZEL INDUCTIVE POSITION SENSOR WITH FREQUENCY CONVERTER AND GOERTZEL FILTER FOR ANALYZING SIGNALS

摘要

The present invention relates to a position sensor (100) for detecting the position of a position transmitter. The position sensor 100 may be connected to a first electrical signal source for outputting a first electrical signal having a first frequency and to a second electrical signal source for outputting a second electrical signal having a second frequency have. The position sensor comprises: a primary coil (101) generating a magnetic alternating field having a first frequency; As the first secondary coil 103 and the second secondary coil 105 which can be magnetically coupled to the primary coil 101 by the position transmitter respectively, The first secondary coil 103 and the second secondary coil 103, in which an electrical signal can be derived from the first secondary coil 103 and a fourth electrical signal can be derived from the second secondary coil 105, A secondary coil 105; A frequency converter (107) connectable to a second electrical signal source for converting a third electrical signal into a first intermediate frequency signal and a fourth electrical signal into a second intermediate frequency signal; And a Goertzel filter bank 109 that demodulates the first intermediate frequency signal to obtain a first demodulated signal and demodulates the second intermediate frequency signal to obtain a second demodulated signal.