Automobile intruder alarm system
First Claim
Patent Images
1. A method of protecting a vehicle from theft, burglary and vandalism, comprising in combination:
- providing an alarm system with a motion sensor, and a processor with memory;
while the alarm system is armed, sensing motion affecting the vehicle;
measuring the magnitude of each motion;
comparing the magnitude with a preprogrammed threshold contained within the processor memory;
counting the number of motions during a selected time interval to determine a rate;
comparing the rate of motions with a preprogrammed threshold rate stored in the processor memory;
producing a short warning for each motion sensed that has a magnitude below the programmed threshold stored in the processor memory;
producing a longer warning than the short warning for each motion sensed that has a magnitude above the preprogrammed threshold stored in the processor memory; and
producing a longer warning than the short warning each time the rate of motions exceeds the threshold rate stored in the processor memory.
7 Assignments
0 Petitions
Accused Products
Abstract
An improved vehicle intruder alarm system includes a method of automatically arming an alarm system. When arming the alarm system by remote control the vehicle windows can be raised and the vehicle headlights automatically turned on by remote control. When entering a vehicle door while the system is armed, a low warning tone is produced for an entry delay time. The warning tone increases with time. The processor for the alarm senses the magnitude and rate of impacts or motions of the vehicle. Short warnings are produced when the magnitude and rate are above a threshold.
122 Citations
4 Claims
-
1. A method of protecting a vehicle from theft, burglary and vandalism, comprising in combination:
-
providing an alarm system with a motion sensor, and a processor with memory; while the alarm system is armed, sensing motion affecting the vehicle; measuring the magnitude of each motion; comparing the magnitude with a preprogrammed threshold contained within the processor memory; counting the number of motions during a selected time interval to determine a rate; comparing the rate of motions with a preprogrammed threshold rate stored in the processor memory; producing a short warning for each motion sensed that has a magnitude below the programmed threshold stored in the processor memory; producing a longer warning than the short warning for each motion sensed that has a magnitude above the preprogrammed threshold stored in the processor memory; and producing a longer warning than the short warning each time the rate of motions exceeds the threshold rate stored in the processor memory. - View Dependent Claims (2, 3, 4)
-
Specification