| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure detector capable of inexpensively and excellently detecting accurate pressure, and also to provide a sensor to be used for the pressure detector.SOLUTION: A pressure detector includes: a first capacitor 11 having electrodes to be moved in response to pressure; a second capacitor 12 having fixed electrodes; first and second oscillation circuits 31 and 32; a difference frequency detection unit; and a conversion unit. The two capacitors are formed by forming cavities in a laminate of multiple substrates where multiple pieces of conductive foil are arranged, for example. |
