PORTABLE, SELF-CONTAINED ANTI-THEFT ALARM SYSTEM FOR THE CARGO COMPARTMENT OF A VEHICLE

摘要

The components of the alarm system are fully enclosed within a portable housing and require no external power or data signal connections. An audible signal is generated by a siren in response to a trigger signal from a light sensor, indicating the opening of the cargo compartment access door, a motion sensor detecting movement, or a tilt sensor indicating the housing being moved. The components include a CPU for generating an alarm signal when a trigger signal is received from one or more of the sensors. A GPS unit transmits a signal indicating the alarm has been triggered and the location of the housing in response to the alarm signal. An internal power source in the form of rechargeable batteries is provided. The system can be controlled by switches located on the housing or remotely by buttons on a hand-held transmitter.

主权项

1. A portable, self-contained anti-theft alarm system for use in the cargo compartment of a vehicle of the type having an access door, the alarm comprising a housing adapted to be situated within the vehicle cargo compartment and enclose the alarm system components, said alarm system components comprising a central processing unit (CPU) capable of generating an alarm signal, an internal sensor connected to said CPU for providing a trigger signal to said CPU upon detecting light exceeding a given level outside said housing, and internal motion sensor connected to said CPU for providing a trigger signal to said CPU indicating that motion has been sensed, a internal sensor connected to said CPU for providing a trigger signal to said CPU upon detecting the tilting of said housing, said CPU generating said alarm signal in response to at least one of said trigger signals, a sound generator connected to said CPU for generating an audible signal in response to said alarm signal, and an internal power source connected to energize said components.