Apparatus and method for activating an inductance loop...

Apparatus for detecting ferromagnetic material

Automotive vehicle classification and identification by...

Automotive vehicle classification and identification by...

Automotive vehicle classification and identification by...

Detection system

Device for activating inductive loop sensor of a traffic...

Device for activating inductive loop sensor of a traffic...

Device for detecting vehicles

Device for low-frequency communication by magnetic coupling

Drive-up station vehicle detection system and method of using sa

Engine operation detection

Fault detecting circuit and method for a vehicle detector system

Ground guidance system for airplanes

Inductive loop vehicle detector

Inductive sensor and method of use

Initialization beacon for initializing a stationary vehicle

Loop detector

Loop detector for traffic signal control

Method and apparatus for active isolation in inductive loop...