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:
Nov. 21, 1995
Filed:
Jan. 25, 1993
Jon M Diekema, Jenison, MI (US);
Joseph B Steffler, Alto, MI (US);
Jerald W Van Baren, Grand Rapids, MI (US);
Vincent Sancimino, Roseville, MI (US);
Customs Ideas, Ada, MI (US);
CPM, Roseville, MI (US);
Abstract
A unit monitors power and reports to a central location. The unit receives an A/C power signal to be monitored, senses a zero crossing of the A/C power signal, and delays an interval so as to sample the A/C signal after a 90 degree phase delay after the zero crossing. Samples are stored in a static recording medium, such as an EEPROM. A processor detects anomalous conditions in the A/C signal using stored configuration values, and reports to a central location at a unit-dependant time after detecting an anomaly. The unit responds to commands from the central location and reports the recorded samples of the A/C power signal, as well as a contemporaneous value of the A/C power signal. The unit also receives and updates revised configuration values.