CN202014403U - Temperature self-adaptation control system based on digital AC direct drive LED light source - Google Patents
Temperature self-adaptation control system based on digital AC direct drive LED light source Download PDFInfo
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- CN202014403U CN202014403U CN2011200806950U CN201120080695U CN202014403U CN 202014403 U CN202014403 U CN 202014403U CN 2011200806950 U CN2011200806950 U CN 2011200806950U CN 201120080695 U CN201120080695 U CN 201120080695U CN 202014403 U CN202014403 U CN 202014403U
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- led light
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Abstract
The utility model discloses a temperature self-adaptation control system based on a digital AC direct drive LED light source, which comprises an AC direct drive controller and a temperature sensor arranged on an LED light source baseplate and communicating with the digital AC direct drive controller; the temperature sensor arranged on the LED light source baseplate is used for acquiring the temperature of the light source baseplate; temperature signals sent by the temperature sensor are collected through a controller of the AC direct drive LED light source; specific commands are given according to the temperature signals, so that the LED light source is enabled to be in heat management all the time during operation; and the junction temperature of an LED is controlled to be in a proper temperature range, so that the light decay of an LED lamp can be reduced greatly, the service life is prolonged, and the barrier that restricts the popularization and application of LED lamps can be overcome.
Description
Technical field
The utility model relates to a kind of temperature control equipment of led light source, particularly relates to the embedded temperature control system that the straight round-up of a kind of digital AC becomes encapsulated LED light source.
Background technology
The LED solid light source has advantages such as luminous efficiency height, environmental protection, long-life, be described as the 4th generation lighting source.The luminous efficiency of LED can reach 180lm/W at present.
Present LED illuminating lamp is generally taked switch power supply type power supply, adopts current constant mode, but when the heating of LED self or variation of ambient temperature, does not have effective control measure, and dependence heat-dissipating casing that can only be passive sheds heat.If ambient temperature is too high, radiating efficiency reduces, and light-source temperature can further raise, and will inevitably produce fatal influence to led light source like this, and its main influence has:
A. temperature raises, and the concentration in electronics and hole can increase in the led chip, and energy gap can reduce, and electron mobility will reduce, the luminous efficiency step-down.
B. during high temperature the transparent enclosure glue of LED can sex change, jaundice, influence its light transmission, the high more this process of working temperature will be carried out soon more, this is another main cause of LED light decay.
The wavelength of LED blue chip can be offset when c. temperature raise, and will not match with the yellow fluorescent powder wavelength that is excited, and the extraction efficiency of white light will inevitably reduce.
In order to address the above problem, designed the led light source temperature self-adaptation control system of directly driving based on digital AC, described interchange is directly driven control system and is comprised by micro-control unit, D/A conversion unit and pwm unit, adopt intelligent temperature adjustment form to replace traditional, single heat conduction pattern becomes positive heat management pattern, make led light source be under the temperature monitoring state in the course of the work all the time, and carry out Current Regulation according to the curve under the led light source ideal operation temperature, make led light source be operated under the suitable temperature conditions always, no matter external environment is acute variation how, its working temperature is in the controlled range all the time.
The utility model content
Main purpose of the present utility model is, overcome the defective that existing LED drive system exists, and provide a kind of digital AC that is applicable to of new structure directly to drive the temperature self-adaptation control system of led light source, technical problem to be solved is that led chip is carried out temperature control, make it remain on a suitable temperature range, and then the life-span of improving led light source, thereby be suitable for practicality more, and have the value on the industry.
The purpose of this utility model and solve its technical problem and realize by the following technical solutions.According to the temperature self-adaptation control system of directly driving led light source based on digital AC that the utility model proposes, comprise that interchange directly drives controller, it also comprises being arranged on the led light source base plate directly drives the temperature sensor that controller communicates with described the interchange.
Aforesaid temperature self-adaptation control system of directly driving led light source based on digital AC, wherein said temperature sensor is AD590, LM35 or thermistor.
By technique scheme, the utility model has following advantage at least based on the temperature self-adaptation control system that digital AC directly drives led light source:
The temperature that temperature sensor obtains the light source base plate is set on the led light source base plate, by exchanging the temperature signal that the controller collecting temperature transducer that directly drives led light source is sent here, make concrete instruction according to temperature signal, all the time be among the heat management when making led light source work, the junction temperature of LED is controlled at suitable temperature range, the light decay of LED light fixture is reduced greatly, improve its useful life, overcome the obstacle that restriction LED light fixture is promoted the use of.
In sum, the temperature self-adaptation control system of directly driving led light source based on digital AC of the utility model special construction, it has above-mentioned many advantages and practical value, thereby is suitable for practicality more.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, below with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.
Description of drawings
Fig. 1 is the circuit diagram that directly drives the temperature self-adaptation control system of led light source based on digital AC described in the utility model.
Embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined utility model purpose is taked, below in conjunction with accompanying drawing and preferred embodiment, to embodiment of the present utility model describe in detail as after.
As shown in Figure 1, temperature sensor is Rt, and MCU is a micro-control unit, and pwm unit is PWM, and D/A conversion unit is A/D.Directly drive the temperature self-adaptation control system of led light source based on digital AC, comprise that interchange directly drives the temperature sensor that controller communicates with described the interchange on directly driving controller and being arranged on the led light source base plate, temperature sensor is AD590, LM35 or thermistor, described interchange is directly driven controller and is comprised micro-control unit, pwm unit and D/A conversion unit, D/A conversion unit is delivered to micro-control unit after the signal of temperature sensor transmission is changed, the LED module is connected with triode Q1, triode Q1 driving LED module.
When detecting temperature and be higher than preset value, micro-control unit controls output pulse width modulating unit sends the signal that reduces duty ratio, the ON time of minimizing triode Q1 in one-period, reduce the power of importing the LED module with regard to having reduced the lighting time that is input on the LED module like this, its temperature is reduced.When temperature is lower than preset value, micro-control unit controls output pulse width modulating unit sends the signal that increases duty ratio, by prolonging the ON time of triode Q1 in one-period, so just prolonged the rated power that the lighting time that is input on the LED module reaches the LED module, in this way, be in all the time among the heat management when making led light source work, the junction temperature of led light source is controlled at suitable temperature range, the light decay of led light source is reduced greatly, improve its useful life.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art, in not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (2)
1. directly drive the led light source temperature self-adaptation control system of controller based on digital AC, comprise that digital AC directly drives controller, it is characterized in that, it also comprises being arranged on the led light source base plate directly drives the temperature sensor that controller communicates with described the interchange.
2. led light source temperature self-adaptation control system of directly driving controller based on digital AC according to claim 1 is characterized in that described temperature sensor is AD590, LM35 or thermistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200806950U CN202014403U (en) | 2011-03-24 | 2011-03-24 | Temperature self-adaptation control system based on digital AC direct drive LED light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200806950U CN202014403U (en) | 2011-03-24 | 2011-03-24 | Temperature self-adaptation control system based on digital AC direct drive LED light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202014403U true CN202014403U (en) | 2011-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200806950U Expired - Fee Related CN202014403U (en) | 2011-03-24 | 2011-03-24 | Temperature self-adaptation control system based on digital AC direct drive LED light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202014403U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821705A (en) * | 2015-04-28 | 2015-08-05 | 广东美的制冷设备有限公司 | Intelligent power module circuit and air-conditioner |
| CN109195264A (en) * | 2018-10-10 | 2019-01-11 | 武汉金东方智能景观股份有限公司 | Wisdom street lamp temperature control device, wisdom street lamp and its control method |
-
2011
- 2011-03-24 CN CN2011200806950U patent/CN202014403U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821705A (en) * | 2015-04-28 | 2015-08-05 | 广东美的制冷设备有限公司 | Intelligent power module circuit and air-conditioner |
| CN109195264A (en) * | 2018-10-10 | 2019-01-11 | 武汉金东方智能景观股份有限公司 | Wisdom street lamp temperature control device, wisdom street lamp and its control method |
| CN109195264B (en) * | 2018-10-10 | 2020-10-20 | 武汉金东方智能景观股份有限公司 | Intelligent street lamp temperature control device, intelligent street lamp and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20121129 Granted publication date: 20111019 |
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| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20131129 Granted publication date: 20111019 |
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| RINS | Preservation of patent right or utility model and its discharge | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111019 Termination date: 20180324 |
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| CF01 | Termination of patent right due to non-payment of annual fee |