D.C. battery plant alarm monitoring remote apparatus

Year	Description
1995	Invention patented by Edward A. Letchak and Stephen M. Citrullo on April 16th, 1995. Abstract: An automatic monitoring system of storage batteries housed at an application site which includes an A.C. power source at the site, a mechanism to interrupt the A.C. power from its source and generate an alarm, a battery plant to provide D.C. power when the A.C. power is interrupted, a mechanism to automatically detect and measure the voltages generated from said battery plant, a mechanism to measure the midpoint of the D.C. battery discharge voltage by measuring the rate of change of said voltage over time and halving the difference between plateau and end of life voltages, a mechanism to generate an alarm message (a) if said midpoint has been reached, (b) if a predetermined low battery cutoff voltage has been reached, (c) if the battery plant is being overcharged or undercharged, and/or (d) if A.C. power is interrupted. The alarm messages are generated while taking into consideration an environmental condition, such as temperature, which causes an adjustment to the measured voltages received from the battery plant. A computer is used to display the alarm messages for appropriate corrective action by a technician located at an operations center.
Source: selected by the editor from original sources.

Invention: D.C. battery plant alarm monitoring remote apparatus