The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 1987
Filed:
Jun. 21, 1984
Jerzy A Lipski, Coquitlam, CA;
Ian R Bardsley, Port Coquitlam, CA;
Microtel Limited, Burnaby, CA;
Abstract
An optical scanner/pulse iniator used for deriving power consumption data from a power meter has a pair of light sources modulated by a square wave having a repetition rate R and an OFF period P. The light beams produced by the light sources are positioned to reflect off of spatially separated points on the rotor (disc) in a power meter so that as the rotor rotates a non-reflective stripe will block the light beams one after the other. A first light sensor is positioned to receive the first light beam after being reflected off the rotor and provides an output signal indicating when the first beam is OFF for a period of time that greater than P. A second light sensor is positioned to receive the second light beam after being reflected by the rotor and it also provides an output signal indicating when the second beam is OFF for a period of time greater than P. An output circuit receiving the output signal indications from first and second sensors provides an output pulse upon receiving an indication from each of the first and second light sensors. And, the accumulation of these pulses is the power consumption data required.