Apparatus of monitoring motor vehicle's electric power and method thereof
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United States of America Patent
Stats
-
Sep 14, 2004
Grant Date -
Apr 29, 2004
app pub date -
Oct 28, 2002
filing date -
Oct 28, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An apparatus of monitoring motor vehicle's electric power and method thereof are provided. The apparatus is disposed in the motor vehicle and includes a monitor and alarm device parallel connected to both a battery to be measured and a starting motor of the motor vehicle. The starting motor is taken as a load for forming an outer loop sampling circuit, 1/t second is set as a sampling time interval during discharging, voltage and current curves are formed by connecting a plurality of continuous voltage values each sampled in 1/t second, a minimum voltage of the voltage curve is compared with a predetermined alarm value for determining a status of the battery to be measured, and an alarm is issued in time if the status of the battery to be measured is abnormal.
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