CN202813006U - Control device for LED intelligent desk lamp - Google Patents
Control device for LED intelligent desk lamp Download PDFInfo
- Publication number
- CN202813006U CN202813006U CN2012201608896U CN201220160889U CN202813006U CN 202813006 U CN202813006 U CN 202813006U CN 2012201608896 U CN2012201608896 U CN 2012201608896U CN 201220160889 U CN201220160889 U CN 201220160889U CN 202813006 U CN202813006 U CN 202813006U
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- desk lamp
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
本实用新型公开了一种LED智能台灯的控制装置，基于C51单片机和PWM调光，以STC89C2051作为主控芯片，设置了手动控制和自动控制；在手动控制时，分为三档，输出不同的PWM占空比实现了对光度的手动调节；在自动控制时，首先通过热释电红外传感器对周围环境热源的变化来控制LED台灯的亮与灭。在灯点亮时通过ADC0808模拟-数字转换芯片不断检验光敏电阻的电压来间接测量感应光度，将电压和预设的阈值进行对比，调整PWM的占空比实现了对光度的自动调节本实用新型电路简单，很大程度上节省电能，延长LED灯寿命，适宜阅读。
The utility model discloses a control device for an LED intelligent desk lamp, which is based on a C51 single-chip microcomputer and PWM dimming, uses STC89C2051 as a main control chip, and sets manual control and automatic control; in manual control, it is divided into three gears and outputs different The PWM duty cycle realizes the manual adjustment of the luminosity; in the automatic control, firstly, the change of the heat source of the surrounding environment is controlled by the pyroelectric infrared sensor to control the on and off of the LED desk lamp. When the light is on, the ADC0808 analog-to-digital conversion chip is used to continuously check the voltage of the photoresistor to indirectly measure the induced luminosity, compare the voltage with the preset threshold, and adjust the duty cycle of the PWM to realize the automatic adjustment of the luminosity. The utility model The circuit is simple, which saves electricity to a great extent, prolongs the life of the LED light, and is suitable for reading.
Description
Technical field
The utility model relates generally to the desk lamp field, relates in particular to a kind of control device of LED intelligent desk lamp.
Background technology
The LED desk lamp is exactly with LED(Light Emitting Diode) be light emitting diode, be the desk lamp of light source, LED is a kind of solid-state semiconductor devices, it can directly be converted into light to electricity.
The LED illumination is solid-state illumination, as the third generation lighting engineering behind incandescent lamp, fluorescent lamp, have energy-saving and environmental protection, safe and reliable characteristics, the Future Ten year that solid state light emitter is had an optimistic view of by industry is replaced the new type light source that the traditional lighting utensil has potentiality, represents the future of lighting engineering.The LED desk lamp is typical green illumination light product-derived, and the product that illumination is promoted the use of as national green has broad application prospects.
In the application of reality, still with same power light-emitting, there is waste of energy in discovery LED lamp when peripheral brightness is large.Secondly because there are positively related relation in caloric value and electric current of LED, warming-up effect the life-span of LED, so under unnecessary brightness, also reduced the life-span of LED.Yet, when LED in peripheral brightness hour, the LED lamp can not provide enough and appropriate luminosity, has affected so again reading, causes visual fatigue.
The utility model content
The utility model purpose is exactly in order to remedy the defective of prior art, a kind of control device with LED intelligent desk lamp of energy-conservation and automatic dimming function to be provided.
The utility model is achieved through the following technical solutions:
The control device of LED intelligent desk lamp, include the led array circuit, it is characterized in that: also include single-chip computer control system, pyroelectric infrared sensor, photo resistance, manual control module, the control core of described single-chip computer control system is single-chip microcomputer, the signal output part of described pyroelectric infrared sensor accesses single-chip microcomputer by instrument amplifier, described photo resistance accesses single-chip microcomputer by AD converter, described manual control module includes the switch of a plurality of parallel connections, one end of each switch altogether, the other end accesses respectively each control port of single-chip microcomputer, input has PWM dimmer procedure, the external led array circuit of the PWM output port of single-chip microcomputer in the single-chip microcomputer.
Described led array circuit adopts the circuit combination of the direct insertion positive white light straw hat formula LED of 5 and 8 strings.
Described single-chip computer control system adopts the AT89C2051 single-chip microcomputer.
Described instrument amplifier is the instrument amplifier of four high guaily unit (LP2902M).
The chip of described AD converter is ADC0808 analog-digital conversion chip.
Described manual control module includes the key switch of four parallel connections.
Principle of the present utility model is:
The utility model includes manual control and automatically controls two kinds of patterns, and automatic control function can not use when manually controlling, and manually control is divided into different gears, comes the brightness of adjustable desk lamp; Automatically control includes pyroelectric infrared sensor and photo resistance, and pyroelectric infrared sensor is experienced human body infrared signal, and signal amplifies, inputs to single-chip microcomputer after relatively through instrument amplifier, judges by the desk lamp whether the people is arranged, and people Ze Kai is arranged, and nobody then closes; The other brightness of desk lamp is experienced in photo resistance, the voltage signal of photo resistance is converted to data signal through AD converter and inputs to single-chip microcomputer, according to the PWM dimmer procedure in the single-chip microcomputer and hand control and automation changeover program, under the prerequisite that does not change the PWM square-wave cycle, adjust the PWM control register of single-chip microcomputer by the method for software and adjust the dutycycle of PWM, thereby control the supply current to the led array circuit.
The utility model has the advantages that:
(1) environmental protection: pollution-free, ultraviolet, infrared ray and heat radiation; (2) low power design: power consumption in 150 hours just once, desk lamp is providing in the situation of sufficient light, power is the smaller the better, the light source that adopts semiconductor technology to make has high electricity conversion, allows electric energy can become to greatest extent light;
(3) long-life light source: need not change the bulb in 10 years, be 100 times of common bulb; (4) the light emitting source toxic heavy metal such as tungstenic, mercury not: semiconductor light-emitting source does not have the tungsten filament in the incandescent lamp not have the mercury of fluorescent lamp, electricity-saving lamp the inside yet;
(5) safety: 12V low-voltage DC supply; Without holding breakable glass component, guarantee user's safety; (6) without stroboscopic, not dazzling, adopt direct current supply without ultraviolet semiconductor light sources, the stroboscopic that does not have Alternating Current Power Supply to produce, senior LGP is looked at straight the light soften handled not dazzling, semiconductor light sources spectrum is controlled, stops the ultraviolet ray supervened fully, uses eye not bitterly for a long time; (7) higher colour temperature, refrigerant light sensation.
Description of drawings
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is circuit diagram of the present utility model.
Fig. 3 is the schematic diagram of manual control module of the present utility model.
Fig. 4 is flow chart of the present utility model.
The specific embodiment
Shown in Fig. 1-4, the control device of LED intelligent desk lamp, include led array circuit 1, single-chip computer control system 2, pyroelectric infrared sensor 3, photo resistance 4, manual control module 5, the control core of single-chip computer control system 2 is single-chip microcomputer, the signal output part of pyroelectric infrared sensor 3 is by instrument amplifier 6 access single-chip microcomputers, photo resistance 4 is by AD converter 7 access single-chip microcomputers, manual control module 5 includes the switch of a plurality of parallel connections, one end of each switch altogether, the other end accesses respectively each control port of single-chip microcomputer, input has PWM dimmer procedure and hand control and automation changeover program, the PWM output port 8 external led array circuit 1 of single-chip microcomputer in the single-chip microcomputer.
Led array circuit 1 adopts the circuit combination of the direct insertion positive white light straw hat formula LED of 5 and 8 strings.
Single-chip computer control system 2 adopts the AT89C2051 single-chip microcomputer.
The chip of AD converter 7 is ADC0808 analog-digital conversion chip.
The utility model is take STC89C2051 as control core, by photo resistance induction luminosity, and utilize the PWM light regulating technology LED to be carried out the automatic adjusting of luminosity, and add that infrared ray sensor is as automatically control, light fixture autoshutdown when realizing nobody, light fixture automatic illuminating when the people is arranged, the people walks rear light fixture automatic distinguishing, can really accomplish the energy saving of throwing light on manual control to be set simultaneously.
Pyroelectric infrared sensor is with having the thermal detector that the thermoelectricity capability material is made, and may be that industrial circle uses often one of infrared sensor.The signal of infrared sensor output is very little, must be amplified and to be used, the instrument amplifier that therefore small-signal of infrared sensor must be passed through a four high guaily unit (LP2902M) amplifies and comparison, detects effective triggering signal, gives single-chip microcomputer and processes.
Photo-resistor is the resistor that utilizes a kind of resistance value that semi-conductive photoelectric effect makes to change with the power of incident light; Incident intensity, resistance reduces, and a little less than the incident light, resistance increases.Photo-resistor generally is used for the measurement of light, control and the opto-electronic conversion of light.Therefore, constantly gather the variation that photo resistance voltage over the ground just can be known desk lamp periphery light intensity.Advanced again AD converter spare AD0808 and converted thereof into data signal, gave single-chip microcomputer, so that single-chip microcomputer is better processed.
By button automatically control and manual control between switching, when being in manual control, stop the work of automatic control system.Manually control is divided into third gear, exports different PWM dutycycles the electric current of LED is controlled, thereby realized manual adjustments to luminosity.
The brightness of LED is subjected to Current Control, regulates the brightness of LED lamp by the control electric current.The PWM light modulation is exactly the PWM port that utilizes single-chip microcomputer to have, and under the prerequisite that does not change the PWM square-wave cycle, adjusts the PWM control register of single-chip microcomputer by the method for software and adjusts the dutycycle of PWM, thereby control supply current.The desired single-chip microcomputer of the utility model must have ADC port and these two necessary conditions of PWM port, and the figure place of ADC is as far as possible high in addition, and the operating rate of single-chip microcomputer as quickly as possible.Before adjusting charging current, single-chip microcomputer reads first the size of charging current fast, then charging current and the actual charging current that reads set is compared, if actual current dutycycle from PWM to the direction that increases charging current that then adjust less than normal; If actual current dutycycle from PWM to the direction that reduces charging current that then adjust bigger than normal, thereby the light modulation of realization LED.
Claims (6)
1. the control device of a LED intelligent desk lamp, include the led array circuit, it is characterized in that: also include single-chip computer control system, pyroelectric infrared sensor, photo resistance, manual control module, the control core of described single-chip computer control system is single-chip microcomputer, the signal output part of described pyroelectric infrared sensor accesses single-chip microcomputer by instrument amplifier, described photo resistance accesses single-chip microcomputer by AD converter, described manual control module includes the switch of a plurality of parallel connections, one end of each switch altogether, the other end accesses respectively each control port of single-chip microcomputer, input has PWM dimmer procedure and hand control and automation changeover program, the external led array circuit of the PWM output port of single-chip microcomputer in the single-chip microcomputer.
2. the control device of LED intelligent desk lamp according to claim 1 is characterized in that: the circuit combination of the direct insertion positive white light straw hat formula LED of described led array circuit employing 5 and 8 strings.
3. the control device of LED intelligent desk lamp according to claim 1 is characterized in that: described single-chip computer control system employing AT89C2051 single-chip microcomputer.
4. the control device of LED intelligent desk lamp according to claim 1, it is characterized in that: described instrument amplifier is the instrument amplifier of four high guaily unit LP2902M.
5. the control device of LED intelligent desk lamp according to claim 1, it is characterized in that: the chip of described AD converter is ADC0808 analog-digital conversion chip.
6. the control device of LED intelligent desk lamp according to claim 1, it is characterized in that: described manual control module includes the key switch of four parallel connections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201608896U CN202813006U (en) | 2012-04-16 | 2012-04-16 | Control device for LED intelligent desk lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201608896U CN202813006U (en) | 2012-04-16 | 2012-04-16 | Control device for LED intelligent desk lamp |
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| CN202813006U true CN202813006U (en) | 2013-03-20 |
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| CN2012201608896U Expired - Fee Related CN202813006U (en) | 2012-04-16 | 2012-04-16 | Control device for LED intelligent desk lamp |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103298213A (en) * | 2013-05-31 | 2013-09-11 | 东莞中山大学研究院 | A method and device for realizing manual and automatic integrated adjustment of LED lights |
| CN104373885A (en) * | 2014-11-21 | 2015-02-25 | 广西智通节能环保科技有限公司 | Flexible organic electroluminescent table lamp capable of being fully automatically switched on or switched off |
| CN104390187A (en) * | 2014-11-21 | 2015-03-04 | 广西智通节能环保科技有限公司 | Smart solar power generation table lamp capable of automatically adjusting luminance |
| CN104456158A (en) * | 2013-09-18 | 2015-03-25 | 刘国秀 | Multifunctional LED dimming lamp |
| WO2015184672A1 (en) * | 2014-06-06 | 2015-12-10 | 金文日 | Fingernail polish curing device having automatic detection module |
| CN105451423A (en) * | 2016-01-29 | 2016-03-30 | 金涛 | Lamp irradiating power line controller |
| CN105636321A (en) * | 2016-01-28 | 2016-06-01 | 金涛 | Lamp capable of automatically controlling light-emitting power |
| CN106482287A (en) * | 2015-08-31 | 2017-03-08 | 青岛海尔空调电子有限公司 | Method and air-conditioning wind direction control method that a kind of employing infrared signal positions to thermal source |
| WO2018176460A1 (en) * | 2017-04-01 | 2018-10-04 | 中国科学院深圳先进技术研究院 | Device and method for adjusting brightness of indoor lighting |
| CN110715197A (en) * | 2019-11-04 | 2020-01-21 | 中国科学技术大学 | Smart Adjustable Desk Lamp |
| CN112040602A (en) * | 2020-07-17 | 2020-12-04 | 上海古鳌电子科技股份有限公司 | Adaptive dimming system and adaptive dimming method thereof |
-
2012
- 2012-04-16 CN CN2012201608896U patent/CN202813006U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103298213A (en) * | 2013-05-31 | 2013-09-11 | 东莞中山大学研究院 | A method and device for realizing manual and automatic integrated adjustment of LED lights |
| CN104456158A (en) * | 2013-09-18 | 2015-03-25 | 刘国秀 | Multifunctional LED dimming lamp |
| WO2015184672A1 (en) * | 2014-06-06 | 2015-12-10 | 金文日 | Fingernail polish curing device having automatic detection module |
| CN104373885A (en) * | 2014-11-21 | 2015-02-25 | 广西智通节能环保科技有限公司 | Flexible organic electroluminescent table lamp capable of being fully automatically switched on or switched off |
| CN104390187A (en) * | 2014-11-21 | 2015-03-04 | 广西智通节能环保科技有限公司 | Smart solar power generation table lamp capable of automatically adjusting luminance |
| CN106482287A (en) * | 2015-08-31 | 2017-03-08 | 青岛海尔空调电子有限公司 | Method and air-conditioning wind direction control method that a kind of employing infrared signal positions to thermal source |
| CN106482287B (en) * | 2015-08-31 | 2019-07-02 | 青岛海尔空调电子有限公司 | A method for locating a heat source using infrared signals and a method for controlling the wind direction of an air conditioner |
| CN105636321A (en) * | 2016-01-28 | 2016-06-01 | 金涛 | Lamp capable of automatically controlling light-emitting power |
| CN105451423A (en) * | 2016-01-29 | 2016-03-30 | 金涛 | Lamp irradiating power line controller |
| WO2018176460A1 (en) * | 2017-04-01 | 2018-10-04 | 中国科学院深圳先进技术研究院 | Device and method for adjusting brightness of indoor lighting |
| CN110715197A (en) * | 2019-11-04 | 2020-01-21 | 中国科学技术大学 | Smart Adjustable Desk Lamp |
| CN112040602A (en) * | 2020-07-17 | 2020-12-04 | 上海古鳌电子科技股份有限公司 | Adaptive dimming system and adaptive dimming method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20140416 |