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ENVIRONMENTAL INFORMATION MEASUREMENT DEVICE, ENVIRONMENTAL INFORMATION MEASUREMENT SYSTEM, AND ENVIRONMENTAL INFORMATION MEASUREMENT METHOD

Foreign code F120006999
File No. S2010-1140-C0
Posted date Oct 29, 2012
Country WIPO
International application number 2011JP071099
International publication number WO 2012/036234
Date of international filing Sep 15, 2011
Date of international publication Mar 22, 2012
Priority data
  • P2010-208452 (Sep 16, 2010) JP
Title ENVIRONMENTAL INFORMATION MEASUREMENT DEVICE, ENVIRONMENTAL INFORMATION MEASUREMENT SYSTEM, AND ENVIRONMENTAL INFORMATION MEASUREMENT METHOD
Abstract

This environmental information measurement device is provided with a power source unit, an environmental information detection unit, a timer unit, and a control unit. From received radio waves, the power source unit generates a power source voltage supplied to a load. The load contains the environmental information detection unit, timer unit, and control unit. The environmental information detection unit has a detection unit provided with a circuit element of which the impedance or capacitance varies in accordance with a physical quantity detected in the environment of a locus for measurement, and outputs a signal that varies in accordance with the response characteristics of the detection unit. The timer unit measures the time from the start of measurement until the voltage of the output signal reaches a predetermined detection voltage, and on the basis of said time, generates environmental information in accordance with the physical quantity. The control unit controls the operation of the environmental information detection unit.

  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • EAST JAPAN RAILWAY COMPANY,
  • NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY,
  • WAKI HIROSHI,
  • IGARASHI HAJIME,
  • WATANABE KOTA,
  • MAKIMURA HIDETOSHI
  • Inventor
  • WAKI HIROSHI,
  • IGARASHI HAJIME,
  • WATANABE KOTA,
  • MAKIMURA HIDETOSHI
IPC(International Patent Classification)
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