Tire condition's physical parameter monitoring device for vehicle, has sub assembly responding to excitation signal by producing dampened oscillating signal, and reading unit determining electric characteristics from oscillating signal

摘要

The device has a sub-assembly (1) with a sensor that varies electric characteristics of a resonant electric circuit. The sub-assembly (1) produces an oscillating signal in response to excitation from a sub-assembly (2). Excitation units (21) are designed to transmit a magnetic excitation signal to the sub-assembly (1) in a limited zone with reciprocal influence from the sub-assemblies (1, 2). The sub assembly (1) responds to the excitation signal by producing a dampened oscillating signal. A reading unit (22) is designed to determine the characteristics from the oscillating signal.