Vehicle/aircraft security system based on vehicle displacement profile, with optional GPS/cellular discrimination indicator
First Claim
1. An alarm system for a motor vehicle, comprising:
- a) a displacement sensor that measures the distance between said displacement sensor and a surface on which the motor vehicle sits;
b) an indication system; and
c) logic means connected to said displacement sensor and to said indication system, said logic means including instruction means for activating said indication system when said displacement sensor senses a displacement event that matches a predetermined displacement profile.
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Accused Products
Abstract
A real-time (instantaneous) vehicle anti-theft warning, notification and tracking system is disclosed that eliminates false alarms by comparing a calculated displacement profile representing the characteristics of a measured displacement (or apparent displacement) of a vehicle with predetermined displacement profiles. The present invention employs a displacement sensor with a unique monitoring program that measures the rate-of-change, direction, and/or duration of displacement of a vehicle (e.g., an automobile or aircraft) over time, and accurately characterizes real and virtual displacements based on the comparison of the calculated displacement profile with the predetermined displacement profiles. The invention also may include GPS/cellular indication capability to alert the vehicle owner of a theft event, and may also include a discrimination indicator to alert the vehicle owner that GPS/cellular capability is not available.
88 Citations
16 Claims
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1. An alarm system for a motor vehicle, comprising:
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a) a displacement sensor that measures the distance between said displacement sensor and a surface on which the motor vehicle sits; b) an indication system; and c) logic means connected to said displacement sensor and to said indication system, said logic means including instruction means for activating said indication system when said displacement sensor senses a displacement event that matches a predetermined displacement profile. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of determining the nature of a displacement of a vehicle with respect to a surface, comprising the steps of:
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measuring and storing a reference distance between the vehicle and the surface; continuously monitoring the distance between the vehicle and the surface; calculating a displacement profile of a displacement event when it occurs; comparing the calculated displacement profile with predetermined displacement profiles; and producing a signal indicative of the nature of the displacement event. - View Dependent Claims (15, 16)
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Specification