Title:
METHOD FOR DETECTING POSITION OF MOVING BODY
Document Type and Number:
Japanese Patent JPS6031617
Kind Code:
A
Abstract:
PURPOSE:To detect the position of a moving body at a period P by laying a folded conductor of the period P and a straight conductor along the travelling course of a moving body and digitizing induced voltages of antennas mounted on the moving body at an interval P/3. CONSTITUTION:An inductive radio line 13 consisting of the conductor 11 folded like a wave of the period P and the straight conductor 12 arranged in parallel with the conductor 11 are laid along the travelling course of the moving body and high frequency current is supplied from a transmitter 15 to the conductors 11, 12. The antennas 14-1-14-3 are mounted on the moving body at the interval P/3, the induced voltages of the antennas are straight detected by detectors 22-1-22-3 and their envelope voltages are made 1V1(Z)1, 1V2(Z)1 and 1V3(Z)1 respectively. These voltages are A/D converted by A/D converters 23-1-23-3 and inputted to a computer 24. The computer 24 executes the operation of the formula (A) on the basis of the input signals and displays the position Z of the moving body on a digital display device 25 at the interval of period P.
Inventors:
HATSUTA TATSU
KUSAKABE TAI
ASAI TAKAHIRO
KUSAKABE TAI
ASAI TAKAHIRO
Application Number:
JP14031383A
Publication Date:
February 18, 1985
Filing Date:
July 29, 1983
Export Citation:
Assignee:
HITACHI CABLE
International Classes:
G01C22/00; B60L13/03; B61L25/02; G01B7/00; G01S1/00; G05D1/02; H02P25/06; H02P25/064; (IPC1-7): B61L25/02; G01B7/00; G01C22/00; G01S1/00; G05D1/02
Attorney, Agent or Firm:
Takashi Matsumoto