Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tsong-Rong Yan0
Chao-Fa Lee0
Cheng-Hsing Kuo0
Date of Patent
October 19, 2010
0Patent Application Number
121077880
Date Filed
April 23, 2008
0Patent Primary Examiner
Patent abstract
A dual mode measurement system with quartz crystal microbalance (QCM) is provided, which includes a quartz sensing component, a first measurement circuit, a second measurement circuit and a switch unit. When the first measurement circuit is selected through the switch unit, the first measurement circuit and the quartz sensing component form an oscillation circuit and output a resonance signal. When the second measurement circuit is selected through the switch unit, the second measurement circuit outputs a frequency scanning signal to scan the quartz sensing component, so as to output an impedance sensing signal.
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