CN205491330U - LED life -span is detected and invariable illuminance control system - Google Patents
LED life -span is detected and invariable illuminance control system Download PDFInfo
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- CN205491330U CN205491330U CN201620199296.9U CN201620199296U CN205491330U CN 205491330 U CN205491330 U CN 205491330U CN 201620199296 U CN201620199296 U CN 201620199296U CN 205491330 U CN205491330 U CN 205491330U
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Abstract
The utility model provides a LED life -span is detected and invariable illuminance control system, including the LED lamp, the LED lamp passes through the LED drive and inserts the AC power supplies, LED lamp and LED drive are connected with LED lamp illuminance controlling means, LED lamp illuminance controlling means includes illuminance collection system, illuminance collection system connection control system, control system is connected with the signal system that adjusts luminance, the LED lamp is connected illuminance collection system, the signal system that adjusts luminance is connected in the LED drive, control system is connected with indicating system, the utility model discloses can detect the life -span of LED lamp to control LED is in the life -span of invariable illuminance, extension LED lamp.
Description
Technical field
This utility model belongs to lighting technical field, particularly to a kind of LED life detection and constant illumination control
System processed.
Background technology
At present, at current illuminating industry, LED is energy-conservation with its height, life-span length, different transform, profit environmental protection, high-new
The advantageous characteristic fast developments such as point, the gesture of big substituted traditional lighting.But LED lamp generally exists for a long time
Using the light decay problem of rear luminance-reduction, impact is normal to be used；And during due to LED long-term work
Unstability, cause the reduction in LED life-span.
Therefore, a kind of LED life detection and constant illumination control system are needed badly, it is possible to the longevity of detection LED
Life, and control LED and be in constant illumination, extend the life-span of LED.
Utility model content
The utility model proposes a kind of LED life detection and constant illumination control system, solve prior art
In problem.
The technical solution of the utility model is achieved in that a kind of LED life tests and constant illumination control
System processed, including LED, described LED is driven by LED and accesses AC power supplies, described LED and LED
Drive connection has LED illuminance control device, described LED illuminance control device to include illumination acquisition system,
Described illumination acquisition system connection control system, described control system connects dim signal system, described LED
Lamp connects described illumination acquisition system, described LED drive connection dim signal system, and described control system is even
It is connected to instruction system.
As one preferred embodiment, when powering on for the first time, illumination acquisition system carries out to LED
The illumination collection of one Preset Time, control system is according to the data acquisition median average filter algorithm collected
Carry out computing with hysteresis filter algorithm, as the benchmark illumination of LED, be stored into the storage list of control system
Unit.
As one preferred embodiment, when powering on for the first time, if illumination acquisition system gathers the illumination time
Less than the first Preset Time, then upper once power on time, the illumination of Resurvey LED, acquisition time is full
During foot the first Preset Time, control system is according to the data acquisition median average filter algorithm collected and stagnant
Post filtering algorithm carries out computing, as the benchmark illumination of LED, is stored into the storage element of control system.
As one preferred embodiment, described illumination acquisition system continuous collecting LED illumination and with
The benchmark illumination of the storage element of control system compares, when real-time brightness value is at the second preset time range
In less than benchmark illumination time, it is determined that LED lamp life termination.
As one preferred embodiment, when judging LED lamp life termination, instruction system refers to
Show, remind user to change LED lamp.
As one preferred embodiment, described control system controls the output of described dim signal system,
Control described LED to drive, drive LED to be operated according in predetermined power proportion.
As one preferred embodiment, LED drives and becomes special ratios according to LED rated power
First predetermined power output, described control system controls the output of described dim signal system, controls described LED
Drive, drive LED less than the first predetermined power.
As one preferred embodiment, described control system is according to the LED of illumination acquisition system Real-time Collection
Lamp illumination, compares it with benchmark illumination, and according to comparative result, controls the output of described dim signal system
Dim signal, thus drive described LED brightness value more than preset value.
As one preferred embodiment, the LED illumination of described acquisition system Real-time Collection is less than benchmark
During the first preset ratio of illumination, control system controls dim signal system and improves dim signal output, increases
LED light modulation drives output electric current, thus improves LED lamp degree, until the real-time illumination of LED is pre-the 3rd
If more than the 3rd preset ratio of benchmark illumination in the time.
As one preferred embodiment, described LED drives and POWER signal is transferred to dim signal system
System, described dim signal system drives described LED to drive by DIM signal, thus completes LED illumination
Adjustment.
After have employed technique scheme, the beneficial effects of the utility model are: this LED life tests and
Constant illumination control system, it is possible to the benchmark illumination of default LED, and detect the real-time illumination of LED,
Compare with benchmark illumination according to real-time illumination, can carry out utilizing dim signal system that LED is driven
Adjust, thus change the illumination of LED, make LED be in default illumination range, it is ensured that LED
The normal luminous of lamp, extends the service life of LED；When the illumination of LED a period of time is less than presetting
During brightness value, then judging LED life termination, now instruction system indicates, and reminds user to change LED
Lamp, thus avoid the inconvenience brought because of LED illumination deficiency to user.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below by right
In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that below,
Accompanying drawing in description is only embodiments more of the present utility model, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is this utility model LED life tests and the block diagram of constant illumination control system；
Fig. 2 is the circuit diagram of control system in Fig. 1；
Fig. 3 is the terminals subgraph of control system in Fig. 1；
Fig. 4 is instruction system circuit diagram in Fig. 1；
Fig. 5 is the circuit diagram that in Fig. 1, LED drives；
Fig. 6 is the circuit diagram of illumination acquisition system in Fig. 1；
Fig. 7 is the circuit diagram of dim signal system in Fig. 1.
In figure, R1-the first resistance；R2-the second resistance；R3-the 3rd resistance；R4-the 4th resistance；R5-the 5th
Resistance；R6-the 6th resistance；R7-the 7th resistance；R8-the 8th resistance；R9-the 9th resistance；C1-the first electric capacity；
C2-the second electric capacity；C3-the 3rd electric capacity；C4-the 4th electric capacity；C5-the 5th electric capacity；C6-the 6th electric capacity；D1-first
Diode；D2-the second diode；Z1-the first Zener diode；Z2-the second Zener diode.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, to the technical side in this utility model embodiment
Case is clearly and completely described, it is clear that described embodiment is only that this utility model part is real
Execute example rather than whole embodiments.Based on the embodiment in this utility model, ordinary skill people
The every other embodiment that member is obtained under not making creative work premise, broadly falls into this utility model
The scope of protection.
As it is shown in figure 1, the detection of this LED life and constant illumination control system, including LED, described LED
Lamp is driven by LED and accesses AC power supplies, and described LED and LED drive connection have LED illumination to control dress
Putting, described LED illuminance control device includes illumination acquisition system, and described illumination acquisition system connects control
System, described control system connects dim signal system, and described LED connects described illumination acquisition system,
Described LED drive connection dim signal system, described control system connects instruction system.
When powering on for the first time, illumination acquisition system carries out the illumination collection of the first Preset Time to LED, control
System processed carries out computing according to the data acquisition median average filter algorithm collected and hysteresis filter algorithm,
As the benchmark illumination of LED, it is stored into the storage element of control system.
When powering on for the first time, if illumination acquisition system gather illumination deficiency of time the first Preset Time, then under
When once powering on, the illumination of Resurvey LED, when acquisition time meets the first Preset Time, control system
System carries out computing according to the data acquisition median average filter algorithm collected and hysteresis filter algorithm, as
The benchmark illumination of LED, is stored into the storage element of control system.
The illumination of described illumination acquisition system continuous collecting LED the benchmark of the storage element with control system
Illumination compares, when real-time brightness value is less than benchmark illumination in the second preset time range, it is determined that LED
Lamp life terminates.
When judging LED lamp life termination, instruction system indicates, and reminds user to change LED lamp.
Described control system controls the output of described dim signal system, controls described LED and drives, drives LED
Lamp is operated according in predetermined power proportion.
LED drives according to the first predetermined power output becoming special ratios with LED rated power, described control
System controls the output of described dim signal system, controls described LED and drives, and drives LED less than first
Predetermined power.
Described control system is according to the LED illumination of illumination acquisition system Real-time Collection, by itself and benchmark illumination
Relatively, and according to comparative result, control described dim signal system output dim signal, thus drive described
LED brightness value is more than preset value.
When the LED illumination of described acquisition system Real-time Collection is less than the first preset ratio of benchmark illumination, control
System processed controls dim signal system and improves dim signal output, increases LED light modulation and drives output electric current, from
And improve LED lamp degree, until the real-time illumination of LED is more than benchmark illumination in the 3rd Preset Time
3rd preset ratio.
Described LED drives and POWER signal is transferred to dim signal system, and described dim signal system is passed through
Pulse width modulation electrical current signal drives described LED to drive, thus completes the adjustment of LED illumination.
Concrete, refer to Fig. 2-Fig. 7, illumination acquisition system includes an illuminance transducer, illuminance transducer
SCL pin, DVI pin, SDA pin respectively by the 3rd resistance R3, the second resistance R2, the 4th electricity
Resistance R4 accesses supply voltage, and DVI pin passes through the 4th capacity earth, and VCC pin meets supply voltage, ADDR
Pin passes through the 8th resistance R8 ground connection, GND pin ground connection.
LED drives and includes a three terminal regulator, and the input of three terminal regulator connects one end of the 9th resistance R9,
The other end of the 9th resistance connects the positive pole of the first Zener diode, and the negative pole of the first Zener diode accesses defeated
Enter power supply, the input of three terminal regulator also by the first in parallel electric capacity and the second Zener diode ground connection,
The negative pole of the second Zener diode connects the input of three terminal regulator.
Control system includes a control chip, and the binding post of control chip passes through the first resistance eutral grounding.
Instruction system includes three light emitting diodes, and three light emitting diodes pass through current-limiting resistance respectively: the
Five resistance R5, the 6th resistance R6, the 7th resistance R7 connect control chip.
Dim signal system includes an amplifier, and the first pin of amplifier connects the positive pole of the second diode D2,
The negative pole output voltage signal of the second diode, the second pin of amplifier connects the by the tenth resistance R10
The negative pole of two diode D2, amplifier the second pin is also by the 11st resistance R11 ground connection, the of amplifier
Three pins pass through the 12nd resistance R12 output pulse width modulated current signal, and the 3rd pin of amplifier is by the
Six capacity earths, the 4th pin earth terminal of amplifier, the 8th pin of amplifier accesses supply voltage.
This LED life tests and constant illumination control system: this LED life tests and constant illumination control
System processed, it is possible to the benchmark illumination of default LED, and detect the real-time illumination of LED, according to shining in real time
Degree compares with benchmark illumination, can be adjusted utilizing dim signal system to drive LED, thus
Change the illumination of LED, make LED be in default illumination range, it is ensured that the normal of LED is sent out
Light, extends the service life of LED；When the illumination of LED a period of time is less than default brightness value,
Then judging LED life termination, now instruction system indicates, and reminds user to change LED, thus
Avoid the inconvenience brought because of LED illumination deficiency to user.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model,
All within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, all
Within protection domain of the present utility model should be included in.
Claims (6)
1. LED life detection and a constant illumination control system, including LED, it is characterised in that institute
Stating LED and drive access AC power supplies by LED, described LED and LED drive connection have LED illumination
Controlling device, described LED illuminance control device includes illumination acquisition system, and described illumination acquisition system is even
Connected control system, described control system connects dim signal system, and described LED connects described illumination and adopts
Collecting system, described LED drive connection dim signal system, described control system connects instruction system.
LED life the most according to claim 1 detection and constant illumination control system, it is characterised in that
Described illumination acquisition system includes an illuminance transducer, the SCL pin of illuminance transducer, DVI pin, SDA
Pin accesses supply voltage by the 3rd resistance, the second resistance, the 4th resistance respectively, and DVI pin passes through the 4th
Capacity earth, VCC pin connects supply voltage, and ADDR pin passes through the 8th resistance R8 ground connection, and GND pin connects
Ground.
LED life the most according to claim 1 detection and constant illumination control system, it is characterised in that
Described LED drives and includes a three terminal regulator, and the input of three terminal regulator connects one end of the 9th resistance,
The other end of the 9th resistance connects the positive pole of the first Zener diode, and the negative pole of the first Zener diode accesses defeated
Enter power supply, the input of three terminal regulator also by the first in parallel electric capacity and the second Zener diode ground connection,
The negative pole of the second Zener diode connects the input of three terminal regulator.
LED life the most according to claim 1 detection and constant illumination control system, it is characterised in that
Described dim signal system includes an amplifier, and the first pin of amplifier connects the positive pole of the second diode,
The negative pole output voltage signal of the second diode, the second pin of amplifier connects the two or two by the tenth resistance
The negative pole of pole pipe, amplifier the second pin passes through also by the 11st resistance eutral grounding, the 3rd pin of amplifier
12nd resistance output pulse width modulated current signal, the 3rd pin of amplifier passes through the 6th capacity earth, puts
4th pin earth terminal of big device, the 8th pin of amplifier accesses supply voltage.
LED life the most according to claim 1 detection and constant illumination control system, it is characterised in that
Described instruction system includes three light emitting diodes, and three light emitting diodes are connected to current-limiting resistance:
5th resistance, the 6th resistance, the 7th resistance.
LED life the most according to claim 1 detection and constant illumination control system, it is characterised in that
Described control system includes a control chip, and the binding post of control chip passes through the first resistance eutral grounding.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620199296.9U CN205491330U (en) | 2016-03-15 | 2016-03-15 | LED life -span is detected and invariable illuminance control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620199296.9U CN205491330U (en) | 2016-03-15 | 2016-03-15 | LED life -span is detected and invariable illuminance control system |
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| CN205491330U true CN205491330U (en) | 2016-08-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105611680A (en) * | 2016-03-15 | 2016-05-25 | 郑州创亿达照明有限公司 | LED life detection and constant luminance control system |
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2016
- 2016-03-15 CN CN201620199296.9U patent/CN205491330U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105611680A (en) * | 2016-03-15 | 2016-05-25 | 郑州创亿达照明有限公司 | LED life detection and constant luminance control system |
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