Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1991-02-21
1992-12-08
Ng, Jin F.
Communications: electrical
Condition responsive indicating system
Specific condition
340455, 307 107, 320 13, 320 48, G08B 2100
Patent
active
051701510
ABSTRACT:
A battery disconnect circuit (10) is shown for disconnecting a battery (12) from an electrical load (14). A voltage measuring circuit (32) constantly measures the voltage of the battery (12). When the voltage reaches a predetermined voltage, proportional to the stored electrochemical energy sufficient to start a vehicle one time, a circuit breaker (24) disconnects the battery (12). An inhibitor (53) senses the operation of the engine (31) through an electret microphone (94) and inhibits the circuit breaker (24) from opening. An alarm disabler (58) senses the state of the circuit breaker (24), i.e., whether the circuit breaker (24) is open or closed, and disables the alarm (42) if the circuit breaker (24) is closed. A trigger (41) through a sensor (R1) sensing a drop in voltage due to an operator trying to activate the starting subsystem (30), activates the alarm (42) to notify the operator that the battery (12) has been disconnected. The activation of the alarm (42) only occurs in the presence of the operator.
REFERENCES:
patent: 4803459 (1989-02-01), Ta
patent: 4902956 (1990-02-01), Sloan
patent: 4950913 (1990-08-01), Kephart
Hofsass Jeffery A.
Ng Jin F.
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