Vehicle site protection system
First Claim
1. A vehicle site protection system for use in protecting a plurality of parked vehicles on said site from unlawful activity, the system comprising a control unit located remotely from the vehicles and arranged to activate an alarm signalling means in response to receipt of a signal from one of a plurality of free-standing wireless sensor units, each sensor unit being placed entirely within the interior of a respective one of the vehicles, each sensor unit comprising a piezocrystal motion and shock sensor, at least one of an ultrasonic scanner and an infrared detector capable of detecting motion of an object within the vehicle, a power supply, and a transmission means which is activated to send an identifying coded signal to the control unit in response to an output from the sensor, the control unit having readily programmable means for storing information relating to the vehicle'"'"'s location wherein a sensor unit is located, the control unit further having display means for displaying information relating to the vehicle'"'"'s location in response to an output from the sensor unit, there being no physical connection between the control unit and the transmission means, characterized in that each sensor unit is self-contained and self-powered and further characterized by each sensor unit being portable and thus readily transferable, requiring no external or internal connections, from one vehicle to another as vehicles enter and leave the site.
1 Assignment
0 Petitions
Accused Products
Abstract
A vehicle protection system comprises a sensor, a transmission unit, a control unit and an alarm signalling unit. The sensor is mountable on and capable of detecting interference with a vehicle, and the transmission unit is also mountable on the vehicle and is activated in response to detection by the sensor of interference with the vehicle to transmit a signal to the control unit. The control unit is located remotely from the vehicle and is arranged to activate the alarm signalling unit in response to receipt of the signal, there being no physical connection between the control unit and the transmission unit.
-
Citations
12 Claims
- 1. A vehicle site protection system for use in protecting a plurality of parked vehicles on said site from unlawful activity, the system comprising a control unit located remotely from the vehicles and arranged to activate an alarm signalling means in response to receipt of a signal from one of a plurality of free-standing wireless sensor units, each sensor unit being placed entirely within the interior of a respective one of the vehicles, each sensor unit comprising a piezocrystal motion and shock sensor, at least one of an ultrasonic scanner and an infrared detector capable of detecting motion of an object within the vehicle, a power supply, and a transmission means which is activated to send an identifying coded signal to the control unit in response to an output from the sensor, the control unit having readily programmable means for storing information relating to the vehicle'"'"'s location wherein a sensor unit is located, the control unit further having display means for displaying information relating to the vehicle'"'"'s location in response to an output from the sensor unit, there being no physical connection between the control unit and the transmission means, characterized in that each sensor unit is self-contained and self-powered and further characterized by each sensor unit being portable and thus readily transferable, requiring no external or internal connections, from one vehicle to another as vehicles enter and leave the site.
Specification