G - Physics
08
B
342/2, 349/30
G08B 13/22 (2006.01)
Patent
CA 1293319
Abstract of Disclosure An antitheft vehicle protection system is described using a remote control unit with which separate mes- sages can be sent to a vehicle mounted protection de- vice. The protection device, a portion of which is placed in an appropriate location, such as near a windshield, is disposed inside the vehicle and monitors a variety of vehicle conditions such as the status of door locks, the status of an engine operation control circuit the insertion of an ignition key and the integrity of the power circuit leading to the antitheft system. One of the messages is decoded as representative of a robbery in progress when certain other alarm conditions such as an open driverside door and a running engine exist. The other message is decoded as representative of a panic connation. Both messages can result in audible alarms. In the case of the alarm indicative of a robbery in progress, a delay is interposed to enable a sufficient distance from the robber before an alarm condition such as an engine lock out is established. sabotage detection scheme is employed depending upon unauthorized tampering with the power supply circuits. An ultrasonic sensor is used to detect an unauthorized vehicle entry. Various alarm cycles and visual alarm indications are described.
553375
Delta Elettronica S.p.a.
Memmola Serafino
Ridout & Maybee Llp
LandOfFree
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