G - Physics – 01 – R
Patent
G - Physics
01
R
G01R 22/06 (2006.01) G01D 9/00 (2006.01) G01R 11/02 (2006.01)
Patent
CA 2525962
A reliable back-up storage unit to save the reading of an electrical energy meter to be read over a wireless link in an automatic meter reading (AMR) system. An electrical energy meter in an AMR system records the data, representing the total amount of electrical energy consumed, in a back-up storage unit on a periodic basis. The back-up storage unit is physically separated from the main module for energy measurement, but lies within its communication range so that data can be written into the back-up storage unit. The back-up storage unit is implemented using repeatedly writable passive radio-frequency (RFID) technology. By making the RFID device passive and positioning it away from the main measuring module, the reliability of the back-up storage unit is enhanced. While the main measuring module is functioning without fault, the module reports meter readings to an external system on a periodic basis or on a demand-driven basis. On the other hand, when the main measuring module has failed, a separate external data gathering system reads the contents of the back-up storage unit. The objective of having such a reliable data back-up unit in an AMR based electrical energy meter is to facilitate utility companies to read the last meter reading in a failed energy meter. The new invention can also be applied in other AMR systems, for example, for gas and water.
Naik Kshirasagar
Ray Bishwabandhu
Na
Naik Kshirasagar
Ray Bishwabandhu
LandOfFree
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