{
  "$type": "site.standard.document",
  "description": "Method in which a capacitor is used to detect the effect of the Coriolis effect acting on the spring-mass system. A time varying signal generated from the capacitor is demodulated over multiple frequencies. The electrical signal includes a time varying electrical signal (fHF) and the resonance…",
  "path": "/patents/1102340",
  "publishedAt": "2002-08-21T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "G01C19/56",
    "BOSCH GMBH ROBERT [DE]"
  ],
  "textContent": "Method in which a capacitor is used to detect the effect of the Coriolis effect acting on the spring-mass system. A time varying signal generated from the capacitor is demodulated over multiple frequencies. The electrical signal includes a time varying electrical signal (fHF) and the resonance frequency (fZ) of the spring-mass system. The electrical signal is generated such that it has a fixed phase relationship relative to the eigen-resonance frequency of the rotation sensor. The invention also relates to a corresponding device for synchronous demodulation. A high frequency signal is used to evaluate capacitance changes and a fixed phase relationship, with the phase of the high frequency signal being a multiple of the resonance frequency signal, between it and the eigen- resonance frequency of the sensor is obtained using a PLL circuit. The logical linking of the two signals is used to control the synchronous demodulator.",
  "title": "Method and device for synchronous demodulation of multiple modulated signals"
}