发明名称 |
ENVIRONMENTAL INFORMATION MEASUREMENT DEVICE, ENVIRONMENTAL INFORMATION MEASUREMENT SYSTEM, AND ENVIRONMENTAL INFORMATION MEASUREMENT METHOD |
摘要 |
An environmental information measurement device includes: a power source unit; an environmental information detector; a timer; and a controller. The power source unit generates, from an electromagnetic wave received, a power source voltage to be supplied to a load. The load includes the environmental information detector, the timer, and the controller. The environmental information detector includes a detector including a circuit element having an impedance or an electrostatic capacitance that varies according to a physical amount detected under an environment at a measurement target point, and outputs a signal that varies according to a response characteristic of the detector. The timer measures a duration from the time when measurement is initiated to the time when a voltage of the signal becomes a predetermined detection voltage. The controller controls an operation of the environmental information detector. |
申请公布号 |
EP2618112(A4) |
申请公布日期 |
2016.04.06 |
申请号 |
EP20110825234 |
申请日期 |
2011.09.15 |
申请人 |
EAST JAPAN RAILWAY COMPANY |
发明人 |
WAKI HIROSHI;IGARASHI HAJIME;WATANABE KOTA;MAKIMURA HIDETOSHI |
分类号 |
G01D21/00;G01K1/02;G01K3/04;G01K7/34;G08C15/00;G08C17/00;H04Q9/00 |
主分类号 |
G01D21/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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