METHOD AND DEVICE FOR DECIDING KIND OF TRAVELING VEHICLE

• Main Author: TAKANASHI ISAO
• Format: Patent
• Language: English
• Published: 02.04.1992
• Subjects: DETECTING MASSES OR OBJECTS; GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; MEASURING; PHYSICS; SIGNALLING; TESTING; TRAFFIC CONTROL SYSTEMS

PURPOSE:To make the accuracy of vehicle kind decision making high and to make the kinds of classifications more by comparing time-series features of electric outputs corresponding to a series of inductance variation generated every time a traveling vehicle passes a loop coil with plural time-series features corresponding to the kinds of traveling vehicles, and determining the most similar feature. CONSTITUTION:When the traveling vehicle passes above the loop coil 1, the inductance of the loop coil 1 varies with time (in time series) corresponding to the floor shape of the vehicle. This variation is converted by a converting means 2 into an electric signal, whose time series features are extracted by a normalizing means 3. The features are compared by a vehicle kind decision means 5 with features of sampled data by the kinds of vehicles stored in a sample means 4 and an additional sample storage means 6 to determine the most similar sample data. The vehicle kind decision means 5 sends out a vehicle kind decision signal indicating clearly the kind of the vehicle corresponding to the determined sample data to a following device or transmission line. Consequently, the number of the kinds of classifications can be increased and the kind of the traveling vehicle can be decided with high vehicle kind decision accuracy.