CN205830105U - A kind of intelligent LED driving chip - Google Patents
A kind of intelligent LED driving chip Download PDFInfo
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- CN205830105U CN205830105U CN201620749163.4U CN201620749163U CN205830105U CN 205830105 U CN205830105 U CN 205830105U CN 201620749163 U CN201620749163 U CN 201620749163U CN 205830105 U CN205830105 U CN 205830105U
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Abstract
The utility model discloses a kind of intelligent LED driving chip, including: illuminant module, voltage transformation module, microprocessor, warm color temperature control module and cold color temperature control module, the outfan of illuminant module is connected with the input of voltage transformation module, the outfan of voltage transformation module is connected with the input of microprocessor, and the outfan of microprocessor input with the input of warm color temperature control module and cold color temperature control module respectively is connected.This utility model detects surrounding light brightness by illuminant module, microprocessor adjust warm color temperature control module and the dutycycle of cold color temperature control module intelligently according to light luminance change, thus reach to regulate the purpose of LED colour temperature.
Description
Technical field
This utility model relates to a kind of intelligent LED driving chip.
Background technology
Along with growth in the living standard, people are for the functional requirement variation the most day by day of illuminating lamp, and illuminating lamp is except full
Outside foot normal lighting, its comfortableness is more important.General, illuminating lamp can send different light under different colour temperatures:
When colour temperature is less than 3000K, send warm colour light；When colour temperature is 4000K～5000K, send soft white light；When colour temperature is big
When 6000K, send cool colour light.At present, its colour temperature of existing lighting is all fixing colour temperature or manually regulates colour temperature, it is impossible to
Realize and natural light interaction regulation, it is impossible to according to human eye, the demand of different time sections colour temperature is regulated colour temperature automatically.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of intelligent LED driving chip, its
The problem that existing LED cannot be automatically adjusted colour temperature according to available light can be solved.
The purpose of this utility model realizes by the following technical solutions:
A kind of intelligent LED driving chip, including: illuminant module, voltage transformation module, microprocessor, warm colour temperature control molding
Block and cold color temperature control module, described warm color temperature control module includes the first resistance, the second resistance, the first audion and PMOS
Pipe, described cold color temperature control module includes the 3rd resistance, the 4th resistance, the second audion and NMOS tube；Described illuminant module
Outfan is connected with the input of voltage transformation module, and the outfan of described voltage transformation module connects with the input of microprocessor
Connect；The outfan of described microprocessor and the base stage of the first audion connect, and the colelctor electrode of described first audion passes through first
Resistance is connected with power end, and the colelctor electrode of the first audion is connected with the grid of PMOS also by the second resistance, the one or three pole
The emitter stage of pipe and the source grounding of PMOS, the drain electrode of described PMOS is connected with the negative pole of a warm colour temperature LED；Described
The outfan of microprocessor also base stage with the second audion is connected, the colelctor electrode of described second audion by the 3rd resistance with
Power end connects, and the colelctor electrode of the second audion is connected with the grid of NMOS tube also by the 4th resistance, described second audion
Transmitter and the source grounding of NMOS tube, the drain electrode of described NMOS tube is connected with the negative pole of a cool colour temperature LED.
Preferably, described illuminant module is photodiode or photoconductive resistance.
Preferably, described first audion and the second audion are NPN audion.
Compared to existing technology, the beneficial effects of the utility model are:
Detect surrounding light brightness by illuminant module, microprocessor adjust intelligently according to light luminance change
Warm color temperature control module and the dutycycle of cold color temperature control module, thus reach to regulate the purpose of LED colour temperature.It addition, micro-place
Reason device is be controlled by single channel pwm signal, it is to avoid the precision problem that two-way PWM brings when controlling, and makes to implement more
Add simple and reliable.
Accompanying drawing explanation
Fig. 1 is the function structure chart of a kind of intelligent LED driving chip of the present utility model；
Fig. 2 is the circuit structure diagram of warm color temperature control module of the present utility model；
Fig. 3 is the circuit structure diagram of cold color temperature control module of the present utility model.
Detailed description of the invention
Below, in conjunction with accompanying drawing and detailed description of the invention, this utility model is described further:
With reference to Fig. 1-3, a kind of intelligent LED driving chip, including: illuminant module 1, voltage transformation module 2, microprocessor 3,
Warm color temperature control module 4 and cold color temperature control module 5, the outfan of illuminant module 1 connects with the input of voltage transformation module 2
Connecing, the outfan of voltage transformation module 2 is connected with the input of microprocessor 3, the outfan of microprocessor 3 respectively with warm colour temperature
The input of control module 4 and the input of cold color temperature control module 5 connect.
Wherein, warm color temperature control module 4 includes the first resistance R1, the second resistance R2, the first audion Q1 and PMOS, cold
Color temperature control module 5 includes the 3rd resistance R3, the 4th resistance R4, the second audion Q2 and NMOS tube.Illuminant module 1 is preferably light
Electric diode or photoconductive resistance, the first audion Q1 and the second audion Q2 are NPN audion.
Concrete, the outfan of microprocessor 3 and the base stage of the first audion Q1 connect, the collection of described first audion Q1
Electrode is connected with power end VCC by the first resistance R1, and the colelctor electrode of the first audion Q1 is also by the second resistance R2 and PMOS
The grid of pipe connects, the emitter stage of the first audion Q1 and the source grounding of PMOS, and the drain electrode of described PMOS is warmed up with one
The negative pole of colour temperature LED D1 connects, and the positive pole of warm colour temperature LED D1 is connected with constant-current source.The outfan of microprocessor 3 is also with
The base stage of two audion Q2 connects, and the colelctor electrode of described second audion Q2 is connected with power end VCC by the 3rd resistance R3, the
The colelctor electrode of two audion Q2 is connected with the grid of NMOS tube also by the 4th resistance R4, the transmitter of described second audion Q2
With the source grounding of NMOS tube, the drain electrode of described NMOS tube is connected with the negative pole of cool colour temperature LED D2, cool colour temperature LED
The positive pole of D2 is connected with constant-current source.
Operation principle of the present utility model is as follows: illuminant module 1 detects the change of surrounding light automatically, by optical signal
Be converted to the signal of telecommunication export to voltage transformation module 2, voltage transformation module 2 corresponding voltage exported to microprocessor 3, micro-
Processor 3 is according to the PWM duty cycle of the voltage swing warm color temperature control module 4 of regulation received and cold color temperature control module 5
PWM duty cycle.When the high level in the clock cycle in the pwm signal of microprocessor 3 output is input to warm colour temperature control
Module 4, the first audion Q1 conducting in warm color temperature control module 4, the grid of output low level to PMOS, PMOS is led
Logical, thus the conducting of warm colour temperature LED D1 lights.Low electricity within a clock cycle in the pwm signal of microprocessor 3 output
Put down and be input to cold color temperature control module 5, the second audion Q2 cut-off in cold color temperature control module 5, output high level to NMOS
The grid of pipe, NMOS tube turns on, thus the conducting of cool colour temperature LED D2 lights.
Such as, in the present embodiment, when ambient light is dimmed, the voltage of voltage transformation module 2 output uprises, micro-process
Device 3 output increases to the dutycycle of warm color temperature control module 4, and accordingly, the dutycycle of output to cold color temperature control module 5 subtracts
Little, colour temperature step-down；When ambient light brightens, the voltage step-down of voltage transformation module 2 output, microprocessor 3 exports to warm colour
The dutycycle of temperature control module 4 reduces, and accordingly, the dutycycle of output to cold color temperature control module 5 increases, and colour temperature uprises.
The utility model has the advantage of: by illuminant module detect surrounding light brightness, by microprocessor according to
Light luminance change adjusts warm color temperature control module and the dutycycle of cold color temperature control module intelligently, thus reaches to regulate colour temperature
Purpose.It addition, microprocessor is to be controlled by single channel pwm signal, it is to avoid the precision that two-way PWM brings when controlling is asked
Topic, makes to implement simpler and reliable.
It will be apparent to those skilled in the art that can technical scheme as described above and design, make other various
Corresponding change and deformation, and all these change and deformation all should belong to the protection of this utility model claim
Within the scope of.
Claims (3)
1. an intelligent LED driving chip, it is characterised in that including: illuminant module, voltage transformation module, microprocessor, warm colour
Temperature control module and cold color temperature control module, described warm color temperature control module includes the first resistance, the second resistance, the first audion
And PMOS, described cold color temperature control module includes the 3rd resistance, the 4th resistance, the second audion and NMOS tube；Described photosensitive
The outfan of module is connected with the input of voltage transformation module, and the outfan of described voltage transformation module is defeated with microprocessor
Enter end to connect；The outfan of described microprocessor and the base stage of the first audion connect, and the colelctor electrode of described first audion leads to
Crossing the first resistance to be connected with power end, the colelctor electrode of the first audion is connected with the grid of PMOS also by the second resistance, the
The emitter stage of one audion and the source grounding of PMOS, the drain electrode of described PMOS is with the negative pole of a warm colour temperature LED even
Connect；The outfan of described microprocessor also base stage with the second audion is connected, and the colelctor electrode of described second audion is by the
Three resistance are connected with power end, and the colelctor electrode of the second audion is connected with the grid of NMOS tube also by the 4th resistance, and described
The transmitter of two audions and the source grounding of NMOS tube, the drain electrode of described NMOS tube is with the negative pole of a cool colour temperature LED even
Connect.
Intelligent LED driving chip the most according to claim 1, it is characterised in that described illuminant module is photodiode
Or photoconductive resistance.
Intelligent LED driving chip the most according to claim 1, it is characterised in that described first audion and the two or three pole
Pipe is NPN audion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620749163.4U CN205830105U (en) | 2016-07-15 | 2016-07-15 | A kind of intelligent LED driving chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620749163.4U CN205830105U (en) | 2016-07-15 | 2016-07-15 | A kind of intelligent LED driving chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205830105U true CN205830105U (en) | 2016-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620749163.4U Active CN205830105U (en) | 2016-07-15 | 2016-07-15 | A kind of intelligent LED driving chip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205830105U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108811225A (en) * | 2017-05-04 | 2018-11-13 | 深圳市帝莱特照明有限公司 | A kind of middle low power intelligent lighting dims color-changed LED driving power without stroboscopic |
-
2016
- 2016-07-15 CN CN201620749163.4U patent/CN205830105U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108811225A (en) * | 2017-05-04 | 2018-11-13 | 深圳市帝莱特照明有限公司 | A kind of middle low power intelligent lighting dims color-changed LED driving power without stroboscopic |
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| GR01 | Patent grant |