JPS5450299A - Road control system - Google Patents

Road control system

Info

Publication number
JPS5450299A
JPS5450299A JP11651877A JP11651877A JPS5450299A JP S5450299 A JPS5450299 A JP S5450299A JP 11651877 A JP11651877 A JP 11651877A JP 11651877 A JP11651877 A JP 11651877A JP S5450299 A JPS5450299 A JP S5450299A
Authority
JP
Japan
Prior art keywords
reflected waves
vehicle
time
waves
roads
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP11651877A
Other languages
Japanese (ja)
Other versions
JPS6143760B2 (en
Inventor
Akihiko Otani
Hiroshi Numata
Masao Mizuno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP11651877A priority Critical patent/JPS5450299A/en
Publication of JPS5450299A publication Critical patent/JPS5450299A/en
Publication of JPS6143760B2 publication Critical patent/JPS6143760B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To make possible controlling of traffic signal lights and judgement of untrafficable roads by providing a microprocessor and providing a multiplicity of vehicle detectors capable of always knowing the time until the reflected waves from road surface are received.
CONSTITUTION: The t'4 of the ultrasonic waves transmitted at t'0 varies within the predetermined range of ±α. Vehicle judgement threshold value is assumed to be β. Now, the time when the reflected waves from road surface are received, e.g., t'4, is stored in a specified area and the difference (a) between the time of the reflected waves of this time and t'4 are computed by a microprocessor. If this difference (a) is less than α, the reflected waves are judged to be the reflected waves from the road surface and the previously stored data t'4 is renewed. If (a) is larger than β, the waves are judged to be the reflected waves from a vehicle, and a vehicle detection signal is outputted. Such vehicle detectors are provided in multiple points and a central control room collects the data therefrom and controls traffic signal lights with a computer, or it is possible to judge untrafficable roads out of roads
COPYRIGHT: (C)1979,JPO&Japio
JP11651877A 1977-09-27 1977-09-27 Road control system Granted JPS5450299A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11651877A JPS5450299A (en) 1977-09-27 1977-09-27 Road control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11651877A JPS5450299A (en) 1977-09-27 1977-09-27 Road control system

Publications (2)

Publication Number Publication Date
JPS5450299A true JPS5450299A (en) 1979-04-20
JPS6143760B2 JPS6143760B2 (en) 1986-09-29

Family

ID=14689118

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11651877A Granted JPS5450299A (en) 1977-09-27 1977-09-27 Road control system

Country Status (1)

Country Link
JP (1) JPS5450299A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03112181A (en) * 1989-09-27 1991-05-13 Fanuc Ltd Turbo floor for laser and laser oscillation device using it

Also Published As

Publication number Publication date
JPS6143760B2 (en) 1986-09-29

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