| 摘要 |
PURPOSE: A sensor system and a transducer-based sensor are provided to improve processing speed and performance of the sensor system, and to prevent cross-transducer interference by receiving phase-shifted variant signals of local oscillators in the transducers. CONSTITUTION: A sensor system(10) is composed of plural transducer groups(12), and the transducer group is composed of plural transducers(12a,12b,12c,12d) operated and arranged near samples(14). The transducers activate by receiving phase-shifted variant signals(30a,30b,30c,30d) of local oscillators. The sensor system prevents cross-transducer interference between the activated transducers by selectively using the phase-shifted variant signals of the local oscillators during output processing. An oscillator sub system(16) generates the phase-shifted variant signals to the transducers of the transducer groups.
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