| 摘要 |
A vibration sensor (1) comprising a vibration electrode (3) having weights (7a, 7b) disposed on both surfaces thereof, a first fixed electrode (2a) opposed to one surface of the vibration electrode (3), and a second fixed electrode (2b) opposed to the other surface of the vibration electrode (3), wherein vibration signals which are based on a signal obtained by a change i n capacitance between the first fixed electrode (2a) and the vibration electro de (3) and based on a signal obtained by a change in capacitance between the second fixed electrode (2b) and the vibration electrode (3) are outputted.</ SDOAB>
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