Title:
SENSOR UNIT, POWER MEASUREMENT UNIT, AND POWER MEASUREMENT SYSTEM
Document Type and Number:
WIPO Patent Application WO/2014/155956
Kind Code:
A1
Abstract:
This sensor unit (1) is provided with the following: a current transformer (10) that is attached to a circuit to be measured; a signal transmission/reception unit (17) that receives a synchronization signal that is used to chronologically synchronize a current signal and a voltage signal and is sent from a power measurement unit (2) for measuring the power flowing through the circuit to which the current transformer (10) is attached; an analog-to-digital conversion unit (12) that, on the basis of synchronization timing provided by the synchronization signal, converts an analog current value measured by the current transformer (10) to a digital current value; and a control unit (14) that controls the sensor unit (1) so as to output the aforementioned digital current value to the power measurement unit (2). This architecture makes it such that this sensor unit (1) can improve the ease of installation and/or noise-rejection performance of wiring even if a very large number of power measurement circuits are used.
Inventors:
SHIOKAWA AKIMI
MIYAMURA YUSUKE
MIYAMURA YUSUKE
Application Number:
PCT/JP2014/000956
Publication Date:
October 02, 2014
Filing Date:
February 24, 2014
Export Citation:
Assignee:
PANASONIC CORP (JP)
International Classes:
G01R21/133; G01R22/00
Foreign References:
| JP2002112411A | 2002-04-12 | |||
| JPH03274470A | 1991-12-05 | |||
| JP2013148410A | 2013-08-01 | |||
| JP2002055129A | 2002-02-20 |
Attorney, Agent or Firm:
ITAYA, Yasuo (JP)
Yasuo Itaya (JP)
Yasuo Itaya (JP)
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