| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem of an LC oscillation type displacement sensor for converting the gas pressure of air obtained from the water level of a washing machine or the like to diaphragm displacement, converting the diaphragm displacement into frequency for outputting square wave oscillation output cannot cope with the situation unless, a shape, a configuration, and/or constants or the like characteristic of such element as an oscillation coil and a capacitor are changed and hence the sensor is not versatile, due to such client specifications as the addition of the adjustment mechanism of an initial oscillation frequency, the detection of the gas detection of a small pressure, improvement in the sensitivity (resolution of frequency conversion, and coping with the need for recycling. SOLUTION: Based on a displacement sensor displacement detection section 11, where a magnetic member 34 is provided at the upper side of an upper case 20 that is fitted to a lower case 25, and an oscillation coil 40 is provided on the side of a diaphragm reinforcement plate 44 (46) being arranged at the upper section of a diaphragm 47, that is pinched by the upper case 20 and the lower case 25, the upper case 20 is remodeled and parts are added to the lower case 25 or the like according to client's specifications, thus improving versatility.
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