Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1999-09-24
2000-07-18
Lieu, Julie
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340438, 340660, 340661, 324433, B60Q 100
Patent
active
060913258
ABSTRACT:
An improved device and corresponding method for warning of deterioration of a starter mechanism in which a motor is powered by a battery to start a combustion engine, prior to failure of the starter mechanism to enable starting of the engine. Featuring the addition of at least one noise and/or vibration sensor, at least one corresponding noise and/or vibration level tester, a logic circuit, and a delay mechanism, to a device and method including a timer responsive to activation of the starter mechanism to time a given time interval, a voltage level tester for measuring a voltage across the battery at the end of the given time interval, a counter for performing an incremental count of occasions on which the voltage is below a given level, and an alarm unit for providing a warning signal when the incremental count is greater than a given number. The logic circuit causes activation of the alarm unit to provide an additional warning signal of starter mechanism deterioration following engine turn-off, upon fulfillment of an `AND` logic operation by receiving (i) a first signal from the noise and/or vibration level tester less than a pre-determined threshold level indicating engine turn-off, and (ii) a delayed second signal from the counter that the incremental count is greater than the given number indicating sudden drop in battery voltage less than the given level following the given time interval. The delay mechanism enables proper synchronization of activation of the logic circuit and the alarm unit. A simpler embodiment has no counter, but includes a latch circuit for registering, storing, and sending to the logic circuit the delayed second signal of drop in battery voltage from the timer.
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patent: 5818333 (1998-10-01), Yaffe et al.
Yaffe Yacob
Zur Amos
Battery Alert Ltd.
Friedman Mark M.
Lieu Julie
LandOfFree
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