Title: Digital phase-locking loop for resistance vibration-pickup type silicon micro-mechanical resonate sensor
Application Number: 200610089390 Application Date: 2006.06.23
Publication Number: 1877998 Publication Date: 2006.12.13
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H03L7/18,G01H11/06
Applicant(s) Name: Beijing University of Aeronautics Address: 100083
Inventor(s) Name: Fan Shangchun, Cai Chenguang
Attorney & Agent: guan ling cheng jinyu
Abstract:
     The invention discloses a digital lock-phased loop of resistance vibrating-pick typed silicon microprocessor mechanic resonant sensor, which comprises the following parts: low-pass filter, analog digital converter, microprocessor, direct digital synthetic signal source and driving amplifier, wherein the signal output by vibrating-pick resistance of sensitive structure is enlarged by low-pass filter and filtered, which is transmitted into digital signal through analog digital converter to input in the microprocessor; the microprocessor controls digit to synthesize signal source directly to output sine signal, which is reference signal of vibrating-pick resistance; the sine signal is amplified through exciting as exciting signal of sensitive structure; the lock loop is composed of vibrating-pick resistance of sensitive structure, low-pass filter, analog digital converter, microprocessor and direct digital synthesizing signal source, wherein the vibrating-pick resistance is phase demodulator, which realizes lock loop of sensor.
Time: 15