FR2403588A1 - Automatic sync. control of cyclic operations - has high stability timed control connected to individual control light units - Google Patents

Automatic sync. control of cyclic operations - has high stability timed control connected to individual control light units

Info

Publication number
FR2403588A1
FR2403588A1 FR7728126A FR7728126A FR2403588A1 FR 2403588 A1 FR2403588 A1 FR 2403588A1 FR 7728126 A FR7728126 A FR 7728126A FR 7728126 A FR7728126 A FR 7728126A FR 2403588 A1 FR2403588 A1 FR 2403588A1
Authority
FR
France
Prior art keywords
control
high stability
light units
timed
lights
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
FR7728126A
Other languages
French (fr)
Other versions
FR2403588B1 (en
Inventor
Michel Pelissier
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.)
Viafrance SA
VIAFRANCE
Original Assignee
Viafrance SA
VIAFRANCE
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 Viafrance SA, VIAFRANCE filed Critical Viafrance SA
Priority to FR7728126A priority Critical patent/FR2403588A1/en
Priority to DE19782839763 priority patent/DE2839763A1/en
Publication of FR2403588A1 publication Critical patent/FR2403588A1/en
Application granted granted Critical
Publication of FR2403588B1 publication Critical patent/FR2403588B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/07—Controlling traffic signals
    • G08G1/081—Plural intersections under common control
    • G08G1/082—Controlling the time between beginning of the same phase of a cycle at adjacent intersections

Abstract

An oscillator based system is used for the operating system of traffic lights. The unit is used as a separate control for a number of lights that are required to operate in a 'rear' synchronous mode. This avoids the use of long lines when operating with truly synchronous systems. A high stability quartz crystal oscillator operates into a divider and a number of counter stages provide signals over a delay to drive an amplifier operating the traffic lights. A number of such units may be operated with lights on a common stretch of highcomy without undue loss of synchronism.
FR7728126A 1977-09-19 1977-09-19 Automatic sync. control of cyclic operations - has high stability timed control connected to individual control light units Granted FR2403588A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7728126A FR2403588A1 (en) 1977-09-19 1977-09-19 Automatic sync. control of cyclic operations - has high stability timed control connected to individual control light units
DE19782839763 DE2839763A1 (en) 1977-09-19 1978-09-13 PROCEDURE FOR AUTOMATIC CONTROL OF CYCLICAL OPERATING SEQUENCES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7728126A FR2403588A1 (en) 1977-09-19 1977-09-19 Automatic sync. control of cyclic operations - has high stability timed control connected to individual control light units

Publications (2)

Publication Number Publication Date
FR2403588A1 true FR2403588A1 (en) 1979-04-13
FR2403588B1 FR2403588B1 (en) 1981-03-27

Family

ID=9195513

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7728126A Granted FR2403588A1 (en) 1977-09-19 1977-09-19 Automatic sync. control of cyclic operations - has high stability timed control connected to individual control light units

Country Status (2)

Country Link
DE (1) DE2839763A1 (en)
FR (1) FR2403588A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3825890A (en) * 1969-07-17 1974-07-23 Hattori Tokeiten Kk Control system for a traffic signalling apparatus
GB1421901A (en) * 1973-02-01 1976-01-21 Schweiter Ag Maschf Lubrication system bicycle locking stand

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3825890A (en) * 1969-07-17 1974-07-23 Hattori Tokeiten Kk Control system for a traffic signalling apparatus
GB1421901A (en) * 1973-02-01 1976-01-21 Schweiter Ag Maschf Lubrication system bicycle locking stand

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NV668/73 *

Also Published As

Publication number Publication date
DE2839763A1 (en) 1979-03-29
FR2403588B1 (en) 1981-03-27

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Legal Events

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CN Change in juridical nature
ST Notification of lapse