Title:
DISTANCE MEASURING EQUIPMENT
Document Type and Number:
Japanese Patent JPS62105070
Kind Code:
A
Abstract:
A distance-measuring arrangement including transmission means for transmitting a wave in a measuring field, receiving means for receiving the wave reflected from a moving body moving in the measuring field and for producing a beat signal from the Doppler frequency. Delimiting means is provided for forming, in the measuring field, at least two datum lines (Ca and Cb) and processing means is provided for processing the distance information obtained from measuring the Doppler frequencies at the instants when the moving body crosses the datum lines. The delimiting means are formed from thermal detectors disposed in an optical assembly having at least two optical axes for defining the datum lines. A timing circuit is provided for defining the instants at which the moving body crosses the datum lines and for applying this information to the processing means.
Inventors:
KUROODO PIRORI
JIYAN PIEERU FUIROI
JIYAN PIEERU FUIROI
Application Number:
JP25595086A
Publication Date:
May 15, 1987
Filing Date:
October 29, 1986
Export Citation:
Assignee:
PHILIPS NV
International Classes:
F42C11/00; F42C13/00; G01S13/50; G01S13/86; (IPC1-7): G01S13/50; G01S13/86
Attorney, Agent or Firm:
Akihide Sugimura