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Method and device for detecting a static index of a lighting device

A lighting device and statistical feature technology, which is applied in the field of detecting statistical feature numbers of lighting devices, can solve problems such as expensive buffer capacitors, and achieve the effect of reducing the number

Inactive Publication Date: 2010-12-15
OSRAM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, flash memory is the most favorable variant, but it has the disadvantage that it cannot be written as frequently as other storage media.
Furthermore, there is the problem that the internal power supply must also remain present long enough to protect the characteristic data when the lighting device is switched off.
This is followed by a further disadvantage: to supply the components important for the storage process, large and thus expensive buffer capacitors must be provided

Method used

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  • Method and device for detecting a static index of a lighting device
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  • Method and device for detecting a static index of a lighting device

Examples

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Embodiment Construction

[0025] figure 1 A flow chart of a first exemplary embodiment of the method according to the invention is shown in a schematic diagram. The flowchart relates, for example, to the case where the number of switching-on operations of the lighting device is to be detected as a characteristic number. In step 100 the switching on of the lighting device starts. In step 120, a predeterminable maximum value (here 255 (corresponding to 2 8 -1)) random number between. If the comparison of the random number generated in step 120 with any comparison number from the same value range agrees, then in step 160 the value of the memory cell of the storage device is incremented by 1. The method then ends in step 180 irrespective of when the lighting device is switched off. If the comparison in step 140 does not result in a match, the method is likewise terminated in step 180 without increasing the value in the memory cell.

[0026] figure 2 A flow diagram of a second exemplary embodiment of...

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Abstract

The present invention relates to a method for detecting a static index of a lighting device (10; 12), comprising the following steps: a) generating a random number within a predefinable value range (step 120; step 220); b) comparing the random number to a comparison number (step 140; step 260); c) C1) if the comparison of step b) results in a correspondence: increasing the count of a storage device (20) by one step width (step 160; step 280). In addition, it relates to a corresponding device for detecting a static index of a lighting device (10; 12).

Description

technical field [0001] The invention relates to a method and a device for detecting statistical characteristic numbers of lighting devices. Background technique [0002] The present invention generally relates to the detection of statistical characteristics of lighting devices. This can be understood to mean, for example, an operating hour or a switch-on sequence of the lighting device. The reason for this measure is that, for example, the light yield of LEDs is strongly related to aging. Depending on the detected operating hours, the activation of the LEDs can then be changed as a countermeasure, for example. In faulty feedback, the number of operating hours or the number of switching operations is an important criterion for determining the cause of a fault. In critical areas of application of lighting devices, such as OP lighting, traffic lights, street lights, maintenance intervals can be observed on the basis of the detection of operating hours or switch-on procedures...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/03
CPCH05B37/03Y02B20/42H05B47/20H05B45/50
Inventor 奥拉夫·布塞奥斯卡·沙尔莫泽
Owner OSRAM GMBH
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