GB2150372B - Lamp failure detector - Google Patents

Lamp failure detector

Info

Publication number
GB2150372B
GB2150372B GB08331551A GB8331551A GB2150372B GB 2150372 B GB2150372 B GB 2150372B GB 08331551 A GB08331551 A GB 08331551A GB 8331551 A GB8331551 A GB 8331551A GB 2150372 B GB2150372 B GB 2150372B
Authority
GB
United Kingdom
Prior art keywords
failure detector
lamp failure
lamp
detector
failure
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.)
Expired
Application number
GB08331551A
Other versions
GB8331551D0 (en
GB2150372A (en
Inventor
John Samuel Coulter
William Ritchie
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.)
Ferranti International PLC
Original Assignee
Ferranti PLC
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 Ferranti PLC filed Critical Ferranti PLC
Priority to GB08331551A priority Critical patent/GB2150372B/en
Publication of GB8331551D0 publication Critical patent/GB8331551D0/en
Priority to DE3441824A priority patent/DE3441824C2/en
Priority to NL8403575A priority patent/NL190588C/en
Publication of GB2150372A publication Critical patent/GB2150372A/en
Application granted granted Critical
Publication of GB2150372B publication Critical patent/GB2150372B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/21—Responsive to malfunctions or to light source life; for protection of two or more light sources connected in parallel
    • H05B47/22—Responsive to malfunctions or to light source life; for protection of two or more light sources connected in parallel with communication between the lamps and a central unit
GB08331551A 1983-11-25 1983-11-25 Lamp failure detector Expired GB2150372B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB08331551A GB2150372B (en) 1983-11-25 1983-11-25 Lamp failure detector
DE3441824A DE3441824C2 (en) 1983-11-25 1984-11-15 Detector for detecting a lamp failure for a lamp system in which a large number of lamps work in periodically repeating combinations (e.g. traffic light system)
NL8403575A NL190588C (en) 1983-11-25 1984-11-23 Lamp failure detector.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08331551A GB2150372B (en) 1983-11-25 1983-11-25 Lamp failure detector

Publications (3)

Publication Number Publication Date
GB8331551D0 GB8331551D0 (en) 1984-01-04
GB2150372A GB2150372A (en) 1985-06-26
GB2150372B true GB2150372B (en) 1986-12-10

Family

ID=10552364

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08331551A Expired GB2150372B (en) 1983-11-25 1983-11-25 Lamp failure detector

Country Status (3)

Country Link
DE (1) DE3441824C2 (en)
GB (1) GB2150372B (en)
NL (1) NL190588C (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3541549A1 (en) * 1985-11-25 1987-05-27 Stuehrenberg Rolf Method and device for protecting signals in traffic lights
IT1204239B (en) * 1986-05-22 1989-03-01 Zetron Istituto Zanussi Per La LAMP CONTROL DEVICE WITH GLASS BULBS AND RELATED PROCEDURE
DE3632179A1 (en) * 1986-09-22 1988-04-07 Siemens Ag Circuit for monitoring signal lamps
DE8909649U1 (en) * 1989-08-11 1990-12-06 Siemens AG, 1000 Berlin und 8000 München Signal converter with non-variable input voltage level
DE4000108A1 (en) * 1990-01-04 1991-07-11 Felten & Guilleaume Energie Low voltage lamp overheating protector - compares lamp current with set manned current and set deviation outside given range
FR2661250B1 (en) * 1990-04-18 1992-11-13 Chauffe Cie Generale DEVICE FOR MONITORING A PUBLIC OR SIMILAR LIGHTING NETWORK FOR LOCATING FIXTURE FAILURES.
US5248967A (en) * 1991-04-26 1993-09-28 Marek Daneshfar Method and apparatus for monitoring electrical devices
ES2116227B1 (en) * 1996-06-28 1999-04-01 Aleza Izquierdo Porfirio CONTROL AND ANALYSIS SYSTEM FOR TRAFFIC LIGHTS.
FR2768589B1 (en) * 1997-09-16 1999-11-12 Sagem METHOD FOR MONITORING A PLURALITY OF LIGHT SOURCES FOR CONTROLLING TRAFFIC AT A CROSSING
JP4398417B2 (en) * 2005-10-19 2010-01-13 株式会社小糸製作所 Lighting control device for vehicle lamp
DE102006018575A1 (en) * 2006-04-21 2007-10-25 Tridonicatco Gmbh & Co. Kg Error detection of LEDs
CN106504559A (en) * 2016-12-26 2017-03-15 上海澳星照明电器制造有限公司 Traffic signal light fault method for early warning

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2833761C3 (en) * 1978-08-01 1981-12-03 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for monitoring the status of signal systems, in particular road traffic light signal systems
JPS55139795A (en) * 1979-04-19 1980-10-31 Tokyo Shibaura Electric Co Core disconnector detector for series firing circuit
CH652671A5 (en) * 1980-08-18 1985-11-29 Stin Light signal circuit arrangement in a railway system
FR2506110A1 (en) * 1981-05-14 1982-11-19 Serres Bernard MEMORY DEVICE FOR LIGHTING CONTROL
DE3206345A1 (en) * 1982-02-22 1983-09-01 Siemens AG, 1000 Berlin und 8000 München Light signal installation, in particular traffic signal installation

Also Published As

Publication number Publication date
GB8331551D0 (en) 1984-01-04
GB2150372A (en) 1985-06-26
NL190588C (en) 1994-05-02
DE3441824C2 (en) 1994-01-13
NL8403575A (en) 1985-06-17
DE3441824A1 (en) 1985-06-05
NL190588B (en) 1993-12-01

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19981125