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STROKE SENSOR SYSTEM | HUBSENSORSYSTEM | SYSTÈME DE CAPTEUR DE COURSE

Patentnummer:EP3067667B1
IPC Hauptklasse:G01D000520
Anmelder:SHOWA CORPORATION (0)
Saitama, JP
Erfinder:
Anmeldung:28.08.15
Offenlegung:10.03.15
Patenterteilung:25.07.18

Abstract / Hauptanspruch
A stroke sensor system includes a tubular vehicle-body-side member, a tubular vehicle-wheel-side member, and a displacement obtainer. The tubular vehicle-body-side member is disposed at a vehicle body side. The tubular vehicle-wheel-side member is coupled to the vehicle-body-side member on a vehicle wheel side and movable in an axial direction of the vehicle-body-side member relative to the vehicle-body-side member. At least one of the members is a conductor. Another one of the members includes a coil. The displacement obtainer includes a capacitor electrically coupled to the coil and constituting an LC oscillation circuit that outputs an oscillation waveform when the members move relative to each other. The displacement obtainer digitizes the oscillation waveform to obtain a reshaped waveform, divides a frequency of the reshaped waveform by a frequency division ratio to obtain a frequency-divided waveform, and uses the frequency-divided waveform to obtain a displacement by which the members move relative to each other.

EP3067667B1


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