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Alternative TitleDevice for detecting small signal of dynamic balancing machine by using lock-in amplifier
王恩德; 佟新鑫; 朱丹; 刘晓安; 王旭
Rights Holder中国科学院沈阳自动化研究所
Patent Agent沈阳科苑专利商标代理有限公司 21002
Other AbstractThe utility model discloses a device which realizes method of detecting small signals of a dynamic balancing machine by using a lock-in amplifier. The device comprises a signal processing circuit, a microprocessor circuit, an analogue switch circuit, a passive low-pass filter circuit, a calibration/measuring switch and a data transmission circuit, wherein the signal processing circuit receives a small signal outputted by a dynamic balancing machine, amplifies the signal in positive and negative directions, at the same time, amplifies and shapes a reference signal Serf into a square wave signal to serve as a chopped wave switch the microprocessor circuit receives the square wave signal from the signal processing circuit, and adjusts time of the analogue switch the passive low-pass filter circuit receives the signal outputted by the analogue switch circuit and the data transmission circuit transmits the signal outputted by the calibration/measuring switch to a PC machine via an USB interface. The device is low in cost, high in detection precision and low in deviation.
PCT Attributes
Application Date2010-10-29
Date Available2011-09-21
Application NumberCN201020582873.5
Open (Notice) NumberCN201983903U
Contribution Rank1
Document Type专利
Recommended Citation
GB/T 7714
王恩德,佟新鑫,朱丹,等. 用锁相放大器对动平衡机微弱信号检测装置[P]. 2011-09-21.
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