LASER ILLUMINATION METHOD, ITS DEVICE, AND TRAFFIC FLOW MEASURING DEVICE

PURPOSE:To measure the traffic flow by the light cutting method with a low- output laser device. CONSTITUTION:One slit beam radiated to the road surface where vehicles travel is divided into multiple slit beams 56, 57,..., 58 in the longitudinal direction, and laser beam projectors 50, 51,..., 52 ar...

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Bibliographic Details
Main Authors NAGAI TORU, HAMADA KANMAN, TAKATO MASAO, KITAMURA TADAAKI
Format Patent
LanguageEnglish
Published 24.06.1994
Edition5
Subjects
ANALOGOUS ARRANGEMENTS USING OTHER WAVES
BASIC ELECTRIC ELEMENTS
DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES
DEVICES USING STIMULATED EMISSION
ELECTRICITY
LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
RADIO DIRECTION-FINDING
RADIO NAVIGATION
SIGNALLING
TESTING
TRAFFIC CONTROL SYSTEMS
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Summary:PURPOSE:To measure the traffic flow by the light cutting method with a low- output laser device. CONSTITUTION:One slit beam radiated to the road surface where vehicles travel is divided into multiple slit beams 56, 57,..., 58 in the longitudinal direction, and laser beam projectors 50, 51,..., 52 are provided for the split slit beams 56, 57,..., 58. Outputs of the laser beam projectors 50, 51,..., 52 can be reduced, and the safety is improved. Shielding covers 53, 54,..., 55 fitted to the laser beam projectors can be made small, and the beautiful appearance of the installation position of a laser lighting system is not impaired.
Bibliography:Application Number: JP19920325611