EP2232953A1 - Verfahren und vorrichtung zum erfassen einer statistischen kennzahl einer beleuchtungsvorrichtung - Google Patents
Verfahren und vorrichtung zum erfassen einer statistischen kennzahl einer beleuchtungsvorrichtungInfo
- Publication number
- EP2232953A1 EP2232953A1 EP08707952A EP08707952A EP2232953A1 EP 2232953 A1 EP2232953 A1 EP 2232953A1 EP 08707952 A EP08707952 A EP 08707952A EP 08707952 A EP08707952 A EP 08707952A EP 2232953 A1 EP2232953 A1 EP 2232953A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- comparison
- lighting device
- random number
- match
- value range
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000003068 static effect Effects 0.000 title abstract 3
- 230000002596 correlated effect Effects 0.000 claims description 4
- 238000005286 illumination Methods 0.000 claims description 2
- 230000015654 memory Effects 0.000 description 9
- 210000004027 cell Anatomy 0.000 description 5
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 208000037063 Thinness Diseases 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 210000000352 storage cell Anatomy 0.000 description 1
- 206010048828 underweight Diseases 0.000 description 1
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
-
- 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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
Definitions
- the present invention relates to a method and a device for detecting a statistical index of a lighting device.
- the present invention generally relates to the detection of statistical characteristics of a lighting device. This includes, for example, operating hours or switch-on operations of the lighting device.
- the cause of this measure is that, for example, the luminous efficacy of LEDs is highly age-dependent. Depending on the recorded operating hours can then be changed as a countermeasure, for example, the control of the LEDs. With defective rear runners the number of operating hours or the number of power is an important criterion in the Determined ⁇ development of the cause of failure. In critical fürsgebie ⁇ th lighting devices, such as surgical lights, traffic lights, street lights, maintenance intervals can be adhered to after recording the operating hours or the switch-on and thus far-reaching failures of the lighting device can be almost completely prevented.
- flash memory In order to acquire such statistical key figures, different memory devices are used in the prior art, for example flash memory, E2Proms, Hard drives, etc.
- flash memory the Güns ⁇ tigste variant is, however, go with the disadvantage of a ⁇ ago that they are not as often as the writable to ⁇ the storage media.
- flash memories can be written up to about 50,000 times.
- E2Proms which are significantly more expensive than flash memory, have the advantage of allowing up to 500,000 write cycles.
- Hard disks as a storage ⁇ medium require on the one hand, that they must be run up to perform a write operation, which is associated with time and energy requirements, and on the other hand, even in small versions expensive.
- the object of the present invention is therefore to provide a method and a device for detecting a statistical characteristic of aumpssvorrich ⁇ tion, the use of cheaper Storage media, in particular the use of flash memory allows.
- the present invention is based on the finding that the required accuracy for such statisti ⁇ cal ratios of lighting devices usually ⁇ not particularly high. In general, a value on single percent is exactly sufficient. Therefore, it is possible not to do every write cycle, but to save only every tenth, hundredth or every thousandth cycle.
- the invention is further based on the recognition that this can be achieved without counting if a random variable is used to determine whether this time a write cycle is performed or not.
- the number of write cycles ⁇ let reduce, the result is scaled at the end only by a certain factor.
- This strategy ER the write cycles enables moreover also during loading ⁇ drive the lighting device to perform, so that it is not dependent on any buffering of the power supply for the active components in the writing operation.
- the memories can be made smaller or wider in the present invention - sponding operating data is recorded, for example Zyk lenart ⁇ , temperature Integral, etc.
- a particular advantage of the present invention is that, despite a low number of write cycles, it enables detection even of very short operating times, for example 1 s or 10 s.
- a random number is initially generated within a predetermined Wertebe ⁇ kingdom, and then comparing the random number with egg ner comparison number. If this comparison yields a match, the bill of a storage device is incremented by one increment.
- the comparison number is preferably a predefinable number from the range of values from which the random number is generated.
- the comparison criterion does not result in a match, it is preferably provided to terminate the method by one increment without increasing the count of the memory device.
- the code is preferably correlated with the Emschaltvorgangen the lighting device, said steps are passed through each time theuploadssvorrich ⁇ tion.
- the comparison number may be correlated with the count of a timing device that is started when the lighting device is turned on. Since ⁇ wherein the method comprises according to claim 1 further Trains t ⁇ before the following steps: If the comparison Step no match results, the comparison is gleichssch ⁇ tt, in which even changes continuously compare the number on ⁇ due to the time detected by the time-measuring device, repeated until an over emados is achieved, and then increases the count of the storage device by a pitch becomes. However, if the lighting device is turned off before achieving a match, the method is ended.
- the step Gene ⁇ erens of a random number corresponds to, and is continued at ⁇ closing with this generation step.
- the counter reading of the memory device is forwarded after each switching off of the lighting device, so that the statistical characteristic number of the lighting device can be detected over many switch-off processes.
- the increment by which the count of the memory device is increased 1.
- a device for acquiring a statistical index of a lighting device comprises a device for generating a random number within a predefinable value range, a comparison device for comparing the random number with a comparison number and a memory device such is coupled with thewheresvor ⁇ chtung that, if the comparison of the random number with the comparison number results in a match, the Zahlerstand the memory device is increased by one step.
- FIG. 1 shows a schematic representation of a flowchart for a first exemplary embodiment of a method according to the invention
- FIG. 2 is a schematic representation of a flowchart for a second embodiment of a method according to the invention.
- Fig. 5 a schematic representation of aforementionedsbei ⁇ play an inventive device. Preferred embodiment of the invention
- step 100 a random number between 0 and a predetermined maximum value of values ⁇ range, in this case 255 (corresponding to 2 8 - 1) is generated. If the comparison of the generated in step 120.
- step 160th the value of a memory cell of a Speichervorrich ⁇ processing is increased by 1 in step 160th.
- the process is terminated in step 180, irrespective of when the lighting device is turned off. If the comparison in step 140 is no match, so the procedural ⁇ ren is just ⁇ if terminated at step 180 without increasing the value m of the memory cell.
- FIG. 2 shows a schematic representation of a flow chart for a second exemplary embodiment of a method according to the invention.
- This embodiment serves to detect the operating time of aumpssvor ⁇ direction, and is used in particular for the realization of an operating seconds counter . It begins with the turning on of the lighting device in step 200.
- a random number is generated in a range between 0 and in the present case 65535 (corresponds to 2 16 - 1).
- the Ma ⁇ ximalwert the value range can be set as desired, but determines the actual number of off guided write cycles. The greater this maximum value is ge ⁇ selected, the smaller is the number of actual write cycles to be performed, as will be explained hereinafter in more detail.
- step 240 a second counter of a timer is started.
- the random number is long ver ⁇ aligned with the current value of the second counter until a match results. If this is the case, the value in a storage cell of a storage device is increased by 1 in step 280. Subsequently, as long wait until the counter has seconds ⁇ the maximum value of the predetermined range of values, in this case 65535 obtained in step 300th Then, it returns to step 220, repeating steps 220 to 300 until the lighting device is turned off.
- step 300th This includes that when the method is run through for the first time, the method is ended already before a "yes” in step 260 or before reaching the value "65536" in step 300.
- Fig. 3 shows the time course of the method according to the embodiment of Fig. 2.
- Blocks of a length of 65535 s are strung together.
- the block Bi schematically a random number is drawn ⁇ net.
- off times t ausi are continuously entered.
- the switch-off time tausi is after the time point predetermined by the random number, so that the count in the memory cell increases to 1.
- the switch-off time t is from 2 e- - S -
- the switch-off time t auS 3 after the point in time which is predetermined in each case by the random number generated in the respective step 220. This leads in each case to a further increase of the counter state.
- the lighting device is turned off Ü not at all, rather the off time of switching ⁇ t aU s 4 is already in the block B5. This leads to increase the count to the value 4 at the time ⁇ point, which is determined by the random number generated for the block B4.
- the time, which is determined by the random number is after the switch-off ⁇ time point t aus4 , so that the Zahlerstand is not increased.
- the switch-off time t out5 is before the time determined by the random number, so that the payer rate remains unchanged.
- Fig. 4 shows a schematic representation of the count of the storage device for an assumed Radiodau he ⁇ 50000 Std., A typical lifetime of an e- lektronischen Vorschaltgerats tungsvor ⁇ chtung as an example of lighting, with the 50000 Std.
- Raceset ⁇ zen constant for different duty cycles Length These different constant turn-on durations result in the marked in Fig. 4 by squares A ⁇ wear.
- turn-on durations of 20 s to 30 days have been assumed.
- constant duty cycles were accepted per ⁇ wells. According to the representation of FIG.
- the payer state is then increased by 1 if the random number generated in step 220 has been reached, that is, on average approximately every 65535 s. Assuming that the switch-on time is constant at 10 s, the total operating time amounts to 65535 s.
- the plausibility ⁇ friendliness that the counter reading is increased in the storage device by 1, therefore, is 10: 65535 1: 6553rd In other words, all the 6553 blocks is achieved results in the comparison, which leads to an increase in the count. If the duty cycle of 10 s is multiplied by the number 6553, the correct number of operating seconds is 65530 s.
- Fig. 5 shows a schematic representation of the structure of a device according to the invention erfmdungsgesoftwareen.
- This has an input connected to a first and a second Emgangsan gleich El Emgangsan gleich E2, to which a network chip ⁇ voltage U N is applied.
- It comprises an electronic ballast 10, to the ⁇ sen output, a lighting means 12 is coupled.
- Zvi ⁇ rule the input terminals El, E2 and the electronic ballast 10, an inventive device 14 is coupled.
- This comprises a device 16 for Gene Center ⁇ a random number within a prescribable value range.
- It furthermore comprises a comparison device 18 coupled to the gene ⁇ riervoriques 16 for comparing the random number with a predeterminable comparison number.
- a memory device 20 is coupled in such a way that if the comparison of the random number is a match with the comparative ⁇ figure, the counter reading of the memory device is increased by an increment 20th
- the device according to the invention can also be provided elsewhere than shown in FIG. 5. They can for example be underweight body ⁇ placed particular in the electronic ballast 10th Further, a forward direction according to the invention may be adapted to detect a plurality of statistical values of a lighting device, so for example, the number of power and the Be ⁇ operating time, these quantities can be measured for different Ele ⁇ elements of the lighting device. Accordingly, in the embodiment of Fig. 5, the statistical characteristics may be separately detected for the electronic ballast 10 and the illumination means 12, which may be different after replacement of either one in the event of a defect or maintenance.
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2008/050504 WO2009089910A1 (de) | 2008-01-17 | 2008-01-17 | Verfahren und vorrichtung zum erfassen einer statistischen kennzahl einer beleuchtungsvorrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2232953A1 true EP2232953A1 (de) | 2010-09-29 |
| EP2232953B1 EP2232953B1 (de) | 2011-10-19 |
Family
ID=39876282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08707952A Not-in-force EP2232953B1 (de) | 2008-01-17 | 2008-01-17 | Verfahren und vorrichtung zum erfassen einer statistischen kennzahl einer beleuchtungsvorrichtung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8415899B2 (de) |
| EP (1) | EP2232953B1 (de) |
| KR (1) | KR20100107051A (de) |
| CN (1) | CN101919316B (de) |
| AT (1) | ATE530050T1 (de) |
| WO (1) | WO2009089910A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183888A (zh) * | 2011-02-23 | 2011-09-14 | 尚雪峰 | 一种照明设备统计照明时间的方法 |
| JP6009702B1 (ja) * | 2013-07-02 | 2016-10-19 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | Ledベース照明ユニットの寿命延長のための方法及び装置 |
| US10064259B2 (en) * | 2016-05-11 | 2018-08-28 | Ford Global Technologies, Llc | Illuminated vehicle badge |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3964059A (en) * | 1974-06-19 | 1976-06-15 | Bell Telephone Laboratories, Incorporated | Method and apparatus for statistical counting |
| US6333602B1 (en) * | 1999-12-14 | 2001-12-25 | Exfo Photonic Solutions Inc. | Smart light source with integrated operational parameters data storage capability |
| US7113432B2 (en) | 2000-09-14 | 2006-09-26 | Sandisk Corporation | Compressed event counting technique and application to a flash memory system |
| US6483247B2 (en) * | 2001-02-20 | 2002-11-19 | Syris Scientific, L.L.C. | Lighting apparatus and light control method |
| JP4374472B2 (ja) * | 2003-12-22 | 2009-12-02 | 学校法人同志社 | 照明制御システム |
| CN1858855A (zh) * | 2006-02-17 | 2006-11-08 | 华为技术有限公司 | 一种延长非易失存储器寿命的计数方法和装置 |
| JP5380085B2 (ja) * | 2009-01-28 | 2014-01-08 | 株式会社沖データ | 圧電トランス駆動装置、冷陰極管インバータ、冷陰極管駆動装置及び画像形成装置 |
-
2008
- 2008-01-17 CN CN2008801250825A patent/CN101919316B/zh not_active Expired - Fee Related
- 2008-01-17 AT AT08707952T patent/ATE530050T1/de active
- 2008-01-17 EP EP08707952A patent/EP2232953B1/de not_active Not-in-force
- 2008-01-17 WO PCT/EP2008/050504 patent/WO2009089910A1/de not_active Ceased
- 2008-01-17 US US12/812,964 patent/US8415899B2/en not_active Expired - Fee Related
- 2008-01-17 KR KR1020107018251A patent/KR20100107051A/ko not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009089910A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009089910A1 (de) | 2009-07-23 |
| EP2232953B1 (de) | 2011-10-19 |
| KR20100107051A (ko) | 2010-10-04 |
| CN101919316B (zh) | 2013-11-06 |
| ATE530050T1 (de) | 2011-11-15 |
| CN101919316A (zh) | 2010-12-15 |
| US8415899B2 (en) | 2013-04-09 |
| US20110047337A1 (en) | 2011-02-24 |
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