FI951382A - Method and apparatus for inspecting the filament lamp, especially in the dark - Google Patents

Method and apparatus for inspecting the filament lamp, especially in the dark Download PDF

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Publication number
FI951382A
FI951382A FI951382A FI951382A FI951382A FI 951382 A FI951382 A FI 951382A FI 951382 A FI951382 A FI 951382A FI 951382 A FI951382 A FI 951382A FI 951382 A FI951382 A FI 951382A
Authority
FI
Finland
Prior art keywords
delta
lamp
actual value
time
inspecting
Prior art date
Application number
FI951382A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI951382A0 (en
Inventor
Heinz-Peter Baumgarte
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of FI951382A publication Critical patent/FI951382A/en
Publication of FI951382A0 publication Critical patent/FI951382A0/en

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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

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

At the start of the switching-on process of the incandescent lamp (5), a first actual value (ILA) of the lamp current (IL) and then, after a time lapse (T), a second actual value (ILE) are measured. The time lapse (T; T1, T2, T3) is predetermined dependently upon the first actual value (IL1A, IL2A, IL3A) at the start of a switching-on process in such a way that, when a drop (I, II, III) therein occurs, the length of the time (T1, T2, T3) is extended. The difference ((Delta) I; (Delta) IL1 (Delta) IL2, (Delta) IL3) between the measured actual values is evaluated to detect the operability of the incandescent lamp. The time is preferably predetermined in such a way that the lamp does not light up until it has elapsed and the lamp is then disconnected from the supply voltage again.
FI951382A 1992-09-25 1995-03-23 Method and apparatus for monitoring an incandescent lamp, especially in non-luminous conditions FI951382A0 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP92116464 1992-09-25
PCT/EP1993/002454 WO1994008438A1 (en) 1992-09-25 1993-09-10 Process and device for monitoring an incandescent lamp, especially in dark condition

Publications (2)

Publication Number Publication Date
FI951382A true FI951382A (en) 1995-03-23
FI951382A0 FI951382A0 (en) 1995-03-23

Family

ID=8210058

Family Applications (1)

Application Number Title Priority Date Filing Date
FI951382A FI951382A0 (en) 1992-09-25 1995-03-23 Method and apparatus for monitoring an incandescent lamp, especially in non-luminous conditions

Country Status (9)

Country Link
EP (1) EP0662276B1 (en)
AT (1) ATE136189T1 (en)
CZ (1) CZ283430B6 (en)
DE (1) DE59302071D1 (en)
DK (1) DK0662276T3 (en)
ES (1) ES2085171T3 (en)
FI (1) FI951382A0 (en)
SK (1) SK37895A3 (en)
WO (1) WO1994008438A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6674800B1 (en) 2000-08-29 2004-01-06 Koninklijke Philips Electronics N.V. Method and system for utilizing a global optimal approach of scalable algorithms
DE10140331C2 (en) * 2001-08-16 2003-11-06 Siemens Ag Traffic control light signals and method for monitoring the function of such a sign

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61124227A (en) * 1984-11-19 1986-06-12 日産自動車株式会社 Discriminator for state of load
EP0434859B1 (en) * 1989-12-27 1993-07-07 Scheidt & Bachmann Gmbh Device for checking the correct working of an incandescent lamp

Also Published As

Publication number Publication date
ATE136189T1 (en) 1996-04-15
ES2085171T3 (en) 1996-05-16
CZ283430B6 (en) 1998-04-15
FI951382A0 (en) 1995-03-23
SK37895A3 (en) 1995-08-09
EP0662276B1 (en) 1996-03-27
DK0662276T3 (en) 1996-08-05
EP0662276A1 (en) 1995-07-12
DE59302071D1 (en) 1996-05-02
CZ58595A3 (en) 1995-06-14
WO1994008438A1 (en) 1994-04-14

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