Sensor Device And Damping Force Adjustable Suspension System

Abstract: A sensor device (SE) comprises: an LC oscillation circuit (150) that has a coil (108) in which inductance changes in accordance with the amount of displacement of an object (200) and in which DC resistance changes in accordance with temperature, and an oscillation unit (132) which is provided with an LC resonance capacitor (134) electrically connected to the coil; and a switching unit (138) that has a switch (SW) for switching whether or not to electrically connect one end (N20) of the coil to a prescribed DC potential, wherein when the switch is off, the LC oscillation circuit is set to a first state in which an oscillation signal (Iout) having a frequency that changes in accordance with the amount of displacement of the object is output, whereas when the switch is on, the LC oscillation circuit is set to a second state in which oscillation stops and a DC voltage (Vtemp) having a voltage value that changes in accordance with the temperature of the coil is output from a common connection point (N1) between a prescribed resistor (R24) that is a constituent element of the oscillation unit and the other end (N30) of the coil (108).

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