Designtech International, Inc.

Harry Powell

Mark M Gottlieb

Ken DeWitt

Ken Dewitt

In a vehicle alarm system, as one feature circuitry is provided which can be attached to detect an input from a door pin input switch, and which can detect the opening and closing of the door if the door pin input switch is either a positively triggered pin switch or a negatively triggered pin switch. Furthermore, a specific structure of a piezoelectric disk sensor and detecting circuitry associated therewith is provided. The piezoelectric disk sensor has a weight mounted off a central axis at a distance of approximately a radius of the piezoelectric disk from a rigid mounting area. The associated circuitry evaluates all information from a shock sensing signal detected by the piezoelectric disk sensor.

Vehicle security system

The present invention is directed to a control system for a backup alarm. The system of the present invention allows an operator of a vehicle which employs a backup alarm warning system to either activate or deactivate the backup alarm warning system as desired. In the system of the present invention, if the vehicle operator places the vehicle in reverse a selected number of times, within a predetermined time period, then this can either activate or deactivate the backup alarm system.

Controller for a backup alarm system

An automatic vehicle starter in which a temperature sensor may sense a temperature of the engine. The vehicle starter may then remotely crank a starter motor of the vehicle. The duration of time that the starter motor is cranked will be based on the sensed temperature. In this way, a vehicle can be cranked for an appropriate amount of time without requiring any tachometer sensing operation. Also, to insure that the vehicle has been properly started, after a signal to remotely start the vehicle is transmitted, a first battery voltage is measured. Then, the ignition to the vehicle is turned on so that all turned on accessories will have power supplied thereto. A battery voltage is then again measured, this battery voltage representing the battery voltage with a load applied thereto from the turned on accessories having power supplied thereto. The vehicle is then automatically started. The battery voltage is then continuously measured and, if it determined that the battery voltage falls below a predetermined value, it will indicate that the vehicle has stalled. The vehicle can then automatically be restarted to insure proper starting or can be turned off.

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Shipman, VA, United States of America

Harry Powell