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1. (WO2017154731) VIBRATION INSPECTION DEVICE

Pub. No.:    WO/2017/154731    International Application No.:    PCT/JP2017/008305
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Fri Mar 03 00:59:59 CET 2017
IPC: G01H 9/00
G01N 29/04
G01N 29/24
G01S 13/88
Applicants: NTN CORPORATION
NTN株式会社
Inventors: ARAI, Ikuo
荒井 郁男
SONOZAKI, Tomokazu
園嵜 智和
AKAI, Hiroshi
赤井 洋
Title: VIBRATION INSPECTION DEVICE
Abstract:
An antenna unit (2) receives a millimeter wave signal, radiates millimeter radio waves to an inspection object (8b) and receives reflected waves from the inspection object (8b), and outputs a reception signal. A millimeter wave measurement circuit (1) outputs a millimeter wave signal to the antenna unit (2) and performs quadrature phase detection on the basis of a millimeter wave signal for transmission of the reception signal outputted from the antenna unit (2). A vibration analysis unit (5) calculates the amount of displacement of the inspection object (8b) on the basis of a quadrature-detected signal.