CN102665366B - LED lamp fault detection system - Google Patents
LED lamp fault detection system Download PDFInfo
- Publication number
- CN102665366B CN102665366B CN201210112380.9A CN201210112380A CN102665366B CN 102665366 B CN102665366 B CN 102665366B CN 201210112380 A CN201210112380 A CN 201210112380A CN 102665366 B CN102665366 B CN 102665366B
- Authority
- CN
- China
- Prior art keywords
- frequency
- light
- led
- led lamp
- division multiplexing
- 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 - Fee Related
Links
Abstract
The invention relates to an LED lamp fault detection system which comprises a photoelectric converter. The photoelectric converter is connected with a frequency routing inspection device through a frequency multiplexing channel, and an output end of the frequency routing inspection device is connected to a control system through fault output equipment. By the LED lamp fault detection system, each LED lamp bead in a certain area can be subjected to fault detection without being provided with a fault detection device, the structure of an LED lamp system is simplified evidently, and maintenance difficulty and cost thereof is effectively reduced.
Description
Technical field
The present invention relates to the fault detection system of LED illumination lamp, particularly suitable but be not limited only to the device LED of multiple different frequency being carried out simultaneously to fault detect.
Background technology
In current LED lighting dimming system, PWM (pulse-width modulation) signal is usually used to control LED driver, by changing the voltage V be applied in LED lamp bead
lEDwith the electric current I flowing through LED lamp bead
lEDopen duration, change the brightness of LED lamp bead.Therefore the brightness of LED lamp bead is only with V
lEDand I
lEDduty ratio D relevant, duty ratio D=T
oN/ (T
oN+ T
oFF) T
oNfor opening the moment, T
oFFfor close moment, duty ratio D is with V
lEDand I
lEDfrequency have nothing to do.Therefore duty ratio D is larger, and LED is brighter; Otherwise duty ratio D is less, LED is darker.
As LED lamp bead voltage V
lEDand electric current I
lEDduty ratio D once determine, the brightness of LED lamp just determines.Therefore, light fixture can work in different frequencies under same brightness.Light fixture is operated in more than 75Hz, and human eye just can't see flicker.But when Rapid eye movements, still can feel flicker, in order to avoid the appearance of this situation, the usual value of operating frequency of lighting the Lights section can higher than 200Hz.
The fault detect of traditional LED lamp tool is realized by current sensing means, current sensing means detects the electric current flowing through LED lamp bead, when detecting that the electric current flowing through LED lamp bead has abnormal, by system bus, the address of fault light fixture is fed back to the main frame of Lighting Control Assembly, main frame, by process, is then reported to the police.And the quantity of current sensing means depends on the quantity in LED lamp bead loop in light fixture, if if the number ratio of LED lamp bead is more in LED illumination control system, as office space illumination, plaza lighting/decoration etc., failure detector will be a lot, make system very burdensome like this, also can consume too much resource, and increase the maintenance difficulties of system.
Summary of the invention
The invention provides a kind of fault detection system of LED illumination lamp, do not need namely can detect each LED lamp bead config failure checkout gear, simplify the structure of LED illumination System, reduce maintenance difficulties and the cost of system.
The fault detection system of LED illumination lamp of the present invention, comprises light/electric transducer, and described light/electric transducer is connected with frequency detector by frequency division multiplexing channel, and the output of frequency detector is connected to control system through fault output equipment.Light/electricity conversion is carried out by the different frequency light of light/electric transducer to the LED lamp bead in certain limit, after differentiation transmission being carried out in the different channels divided to different LED frequencies by frequency division multiplexing channel, in frequency detector, each LED frequency is patrolled and examined, after a certain frequency disappearance being detected, namely by fault output equipment this signal outputted in control system and report to the police.Fault output equipment and control system can realize with traditional approach, and frequency detector is a digital information processing system.
Preferably, filter is connected with between described frequency division multiplexing channel and frequency detector.Filter can filter out the irregularity waveform of input, also can be decomposed by the different frequency mixed further simultaneously, more be conducive to the judgement of frequency detector.
Concrete, the input of described light/electric transducer is connected with light-sensitive element.
Preferred light-sensitive element is photo resistance or photodiode.
Test is learnt, the fault detection system of LED illumination lamp of the present invention, fault detect can be carried out to each LED lamp bead in certain area by a detection system, do not need each LED lamp bead config failure checkout gear, significantly simplify the structure of LED illumination System, effectively reduce maintenance difficulties and the cost of system.
Below in conjunction with the embodiment by accompanying drawing illustrated embodiment, foregoing of the present invention is described in further detail again.But this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following example.Without departing from the idea case in the present invention described above, the various replacement made according to ordinary skill knowledge and customary means or change, all should comprise within the scope of the invention.
Accompanying drawing explanation
Connection block diagram when Fig. 1 is the fault detection system work of LED illumination lamp of the present invention.
Embodiment
As shown in Figure 1, the fault detection system of LED illumination lamp of the present invention, comprises light/electric transducer, and the input of described light/electric transducer is connected with light-sensitive element, and described light-sensitive element is photo resistance or photodiode.Light/electric transducer, by frequency division multiplexing channel, is connected with frequency detector through filter.The output of frequency detector is connected to control system through fault output equipment.During work, be that each LED lamp bead distributes different frequencies by control bus, the different frequency light of light-sensitive element to each LED lamp bead is responded to and reaches in light/electric transducer.After the different frequency light of light/electric transducer to input carries out light/electricity conversion, by frequency division multiplexing transmission in filter, filter carries out filtering sampling according to the instruction of frequency detector to a certain frequency, again the signal feedback after filtering sampling to frequency detector, this completes the detection of a certain frequency, then carry out the detection of next frequency.After filter carries out filtering sampling to each frequency, in frequency detector, each LED frequency is patrolled and examined, after a certain frequency disappearance being detected, namely by fault output equipment this signal outputted in control system and carry out reporting to the police and processing.Fault output equipment and control system can realize with traditional approach.
Claims (3)
- The fault detection system of 1.LED lighting, it is characterized by: comprise for each LED lamp bead distributes the control bus of different frequencies, respond to the light-sensitive element of the different frequency light of each LED lamp bead and the light of different frequency can be converted into the frequency division multiplexing channel that can use the light/electric transducer of the signal of frequency division multiplexing channel and be arranged between described light/electric transducer and described frequency detector, described light/electric transducer is connected with frequency detector by frequency division multiplexing channel, the output of frequency detector is connected to control system through fault output equipment, and be connected with filter between described frequency division multiplexing channel and frequency detector, wherein,Described frequency division multiplexing channel is distinguished in the different channels divided different LED frequencies,During work, be that described each LED lamp bead distributes different frequencies by described control bus, the different frequency light of described light-sensitive element to described each LED lamp bead is responded to and is reached in described light/electric transducer; After the different frequency light of described light/electric transducer to input carries out light/electricity conversion, by described frequency division multiplexing transmission in described filter; Described filter carries out filtering sampling according to the instruction of described frequency detector to a certain frequency, then the signal feedback after filtering sampling to frequency detector, this completes the detection of a certain frequency, then carries out the detection of next frequency; After described filter carries out filtering sampling to each frequency, in described frequency detector, each LED frequency is patrolled and examined, after a certain frequency disappearance being detected, by described fault output equipment this signal outputted in described control system and carry out reporting to the police and processing.
- 2. the fault detection system of LED illumination lamp as claimed in claim 1, is characterized by: the input of described light/electric transducer is connected with light-sensitive element.
- 3. the fault detection system of LED illumination lamp as claimed in claim 2, is characterized by: described light-sensitive element is photo resistance or photodiode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410633152.5A CN104470162B (en) | 2012-04-17 | 2012-04-17 | Fault detection method of LED lighting lamp |
| CN201210112380.9A CN102665366B (en) | 2012-04-17 | 2012-04-17 | LED lamp fault detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210112380.9A CN102665366B (en) | 2012-04-17 | 2012-04-17 | LED lamp fault detection system |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410633152.5A Division CN104470162B (en) | 2012-04-17 | 2012-04-17 | Fault detection method of LED lighting lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102665366A CN102665366A (en) | 2012-09-12 |
| CN102665366B true CN102665366B (en) | 2014-12-17 |
Family
ID=46774748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210112380.9A Expired - Fee Related CN102665366B (en) | 2012-04-17 | 2012-04-17 | LED lamp fault detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102665366B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794227B (en) * | 2018-08-02 | 2022-09-02 | 阿里巴巴集团控股有限公司 | Fault detection method, system, device and storage medium |
| WO2020061927A1 (en) * | 2018-09-27 | 2020-04-02 | 厦门普为光电科技有限公司 | Strobe light protection system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006012631A (en) * | 2004-06-25 | 2006-01-12 | Matsushita Electric Works Ltd | Lighting device and lighting system |
| CN1959355A (en) * | 2005-11-03 | 2007-05-09 | 北京师范大学 | Method for detecting chromaticity of luminescence, intensity, and white balance of semiconductor light source |
| EP1879172A1 (en) * | 2006-07-14 | 2008-01-16 | Barco NV | Aging compensation for display boards comprising light emitting elements |
| CN102338744A (en) * | 2010-07-20 | 2012-02-01 | 横河电机株式会社 | Multichannel photometric measurement apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202587552U (en) * | 2012-04-17 | 2012-12-05 | 四川新力光源有限公司 | LED lighting lamp fault detection system |
-
2012
- 2012-04-17 CN CN201210112380.9A patent/CN102665366B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006012631A (en) * | 2004-06-25 | 2006-01-12 | Matsushita Electric Works Ltd | Lighting device and lighting system |
| CN1959355A (en) * | 2005-11-03 | 2007-05-09 | 北京师范大学 | Method for detecting chromaticity of luminescence, intensity, and white balance of semiconductor light source |
| EP1879172A1 (en) * | 2006-07-14 | 2008-01-16 | Barco NV | Aging compensation for display boards comprising light emitting elements |
| CN102338744A (en) * | 2010-07-20 | 2012-02-01 | 横河电机株式会社 | Multichannel photometric measurement apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102665366A (en) | 2012-09-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101675709B (en) | Lighting device with a led used for sensing | |
| CN102548101B (en) | LED dimming system | |
| CN104066249B (en) | The driving circuit of a kind of LED light device and driving method | |
| CN201765779U (en) | LED (light emitting diode) luminaire and cascading structure thereof | |
| CN102238774A (en) | Method and device for acquiring conduction angle and light emitting diode (LED) driving method and device | |
| WO2012008800A2 (en) | Power integrated circuit for led lighting | |
| CN103702480A (en) | LED (Light-Emitting Diode) driving circuit and emitted light color changing method through LED driving circuit in combination with power switch | |
| CN103813570A (en) | LED brightness balancing control circuit and method, and constant-voltage drive LED lighting system and method | |
| CN106455228A (en) | A control method of a lamp of a rail car and a system thereof | |
| CN203193980U (en) | Drive circuit for multi-channel dimmable LED (light-emitting diode) lamp tube | |
| CN102665366B (en) | LED lamp fault detection system | |
| CN105611703A (en) | Energy-saving building lighting control system and method | |
| CN203352858U (en) | LED all-turning-on control circuit and constant voltage driven LED illumination system | |
| CN104936364A (en) | Multifunctional intelligent LED lamp and intelligent control method of underground parking lot | |
| CN103476188A (en) | Multifunctional intelligent dimming controller | |
| US9226367B1 (en) | Method and apparatus for light control and ambient light detection using an LED light fixture | |
| CN202587552U (en) | LED lighting lamp fault detection system | |
| CN103702484A (en) | Centralized-control type LED (Light Emitting Diode) headlamp set dimming system | |
| CN111596631A (en) | Tunnel intelligent illumination control system and method and controller | |
| CN201967185U (en) | Light source control device and system | |
| JP4904141B2 (en) | Railway traffic signal failure detection device | |
| Louw et al. | Digital LED lighting solutions | |
| KR101039448B1 (en) | Controller for multi functional led lamp column using broadband plc | |
| CN104470162A (en) | Fault detection method of LED lighting lamp | |
| JP4972519B2 (en) | Brightness control device and lighting control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 611731 Sichuan city of Chengdu province high tech Zone (West) New Road No. 2 Applicant after: Sichuan Sunfor Light Co., Ltd. Address before: 611731 Sichuan city of Chengdu province high tech Zone (West) New Road No. 2 Applicant before: Sichuan Sunfor Lighting Co., Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20180417 |