CN201037611Y - LED desk lamp with automatic light stabilizing function - Google Patents

LED desk lamp with automatic light stabilizing function Download PDF

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Publication number
CN201037611Y
CN201037611Y CNU2007200695129U CN200720069512U CN201037611Y CN 201037611 Y CN201037611 Y CN 201037611Y CN U2007200695129 U CNU2007200695129 U CN U2007200695129U CN 200720069512 U CN200720069512 U CN 200720069512U CN 201037611 Y CN201037611 Y CN 201037611Y
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CN
China
Prior art keywords
circuit
led
desk lamp
chip microcomputer
lamp
Prior art date
Application number
CNU2007200695129U
Other languages
Chinese (zh)
Inventor
费子翔
Original Assignee
费子翔
邓静
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Publication date
Application filed by 费子翔, 邓静 filed Critical 费子翔
Priority to CNU2007200695129U priority Critical patent/CN201037611Y/en
Application granted granted Critical
Publication of CN201037611Y publication Critical patent/CN201037611Y/en

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Abstract

The utility model relates to a LED table lamp, particularly relating to a LED table lamp with automatic light stabilization capability. The utility model comprises a power circuit and LEDs, wherein, the power circuit which converts the alternating current to the direct current and is depressured by a voltage stabilizer tube powers the LEDs to glow; the utility model is characterized in that the LED table lamp with automatic light stabilization capability is also comprises a brightness control circuit, wherein, the brightness control circuit comprises a single chip processor, an infrared detecting module, a photosensitive testing circuit and a drive circuit; the infrared detecting module can detect a human body; if detected, the infrared detecting module outputs up level; if not detected, the infrared detecting module outputs low level; the output signals are transmitted to the single chip processor; the photosensitive testing circuit can test ambient lights, the output signals are also transmitted to the single chip processor; the single chip processor which is the main control unit processes the input signals and controls the LEDs to glow and go out by the drive circuit. The utility model has the advantages that the utility model can automatically regulate the brightness of the table lamp by testing the brightness of the ambient lights, which can protect eyes; the utility model can be automatically turned off when people leave, thereby saving energy.

Description

LED desk lamp with automatically steady light function
Technical field
The utility model relates to a kind of LED desk lamp (the LED desk lamp is hereinafter to be referred as the LED desk lamp), relates in particular to a kind of LED desk lamp with automatically steady light function.
Background technology
Existing desk lamp is generally incandescent lamp or fluorescent lamp, and wherein incandescent lamp has been realized with an automatic light meterly by photo resistance and controllable silicon, but its shortcoming mainly is: the first, and incandescent lamp is a thermal light source, and luminous efficiency is low, and energy waste is serious; The second, the desk lamp that this class is with an automatic light meter does not possess the infrared induction function, has wasted the unnecessary energy when forgetting to turn off the light.Although fluorescent lamp is than incandescent lamp luminous efficiency height, the resistance-type light modulation is adopted in its light modulation more, can not reach energy-conservation effect, and flicker from fluorescent lighting is more serious, is unfavorable for vision protection, and the function of automatically steady light does not have.
A kind of LED desk lamp that developed recently gets up be subject to people's attention with advantages such as its luminous efficiency height, no stroboscopic, life-span length, but because the LED lamp is a kind of newer light source, its product function is also more single.The LED desk lamp great majority that can see at present only possess switching function, can carry out the considerably less of manual light modulation, and not possess the infrared induction function.
The utility model content
The purpose of this utility model is to provide a kind of LED desk lamp with automatically steady light function, and this LED desk lamp can the brightness of testing environment light be adjusted desk lamp brightness automatically, and the energy eyeshield can be turned off the light after the people leaves, automatically with energy savings.
The utility model is achieved in that a kind of LED desk lamp with automatically steady light function, comprise power circuit and LED, after power circuit becomes alternating current into direct current, luminous through the voltage-stabiliser tube step-down for LED, it is characterized in that: described LED desk lamp with automatically steady light function also comprises intednsity circuit, and intednsity circuit comprises single-chip microcomputer, infrared detection module, photosensitive detection circuit, drive circuit; But infrared detection module perception human body, if there is the people then to export high level, nobody is output low level then, output signal is delivered to single-chip microcomputer and handles; But photosensitive detection circuit testing environment light, detection signal also is delivered to single-chip microcomputer; Single-chip microcomputer is a main control unit, to the input signal computing after drive circuit control LED light on and off.
Also comprise the voltage-stabiliser tube that the control circuit operating voltage is provided in the described mu balanced circuit, power voltage supply single-chip microcomputer, infrared detection module and the photosensitive detection circuit of this voltage-stabiliser tube output.
Described photosensitive detection circuit comprises modulus conversion chip U2, photo resistance R3, fixed value resistance R5, potentiometer R4 and fixed value resistance R6, photo resistance R3 and fixed value resistance R5 are connected into bleeder circuit, the CH1 passage of output termination modulus conversion chip U2 in the middle of this bleeder circuit; Potentiometer R4 and fixed value resistance R6 also form bleeder circuit, and output connects the CH0 passage of modulus conversion chip U2 in the middle of it.
Described drive circuit is a Darlington transistor.
The utility model makes it compared with prior art owing to adopted above-mentioned technical scheme, and the utility model can if extraneous light is darker, then can be adjusted desk lamp brightness and strengthen thereupon by the brightness of photo resistance testing environment light, reaches then no longer increase after the predetermined value; Vice versa, realized the constant of environmental light intensity.Also have manual dimming function simultaneously, can be according to the concrete hand-operated forced property of needs adjusting desk lamp brightness.Whether the someone existed around the utility model can also be responded to it, if after the people left, through a little time-delay, desk lamp can extinguish automatically with the conservation of power resource.
Description of drawings
Fig. 1 is the control principle figure that the utlity model has the LED desk lamp of automatically steady light function;
Fig. 2 is the LED desk lamp circuit diagram that the utlity model has automatically steady light function.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, Fig. 2, a kind of LED desk lamp with automatically steady light function, comprise power circuit, single-chip microcomputer, infrared detection module, photosensitive detection circuit, drive circuit, LED, single-chip microcomputer, infrared detection module, photosensitive detection circuit, drive circuit have been formed intednsity circuit.
Power circuit comprises power module, two voltage-stabiliser tubes, diode, electric capacity, power module U4 changes the 220V alternating current into the 12V direct current, with a voltage-stabiliser tube U5 12V is reduced to 8V again, then through diode D33 step-down, 7.2V voltage to LED power supply has just been arranged, and voltage-stabiliser tube U6 provides other circuit as 5V operating voltage that single-chip microcomputer, infrared detection module and photosensitive detection circuit use.U4 selects 220S12 integrated power supply module for use, and U5 selects MC78L08 for use, and U6 selects LM7805 for use, and D33 is 4148.The voltage-stabiliser tube two ends connect an electric capacity respectively can the filtering clutter, obtains voltage stably.
But infrared detection module U3 perception human heat, 1 pin of infrared detection module U3 connects positive source, and 3 pin connect power cathode, and 2 pin are signal output port.Output signal directly being linked the P1.3 port of single-chip microcomputer handles.Nobody the time, the 2 pin output low levels of infrared detection module U3 lost efficacy the PWM ripple after single-chip microcomputer is handled, LED extinguishes.Man-hour is arranged, the 2 pin output high level of infrared detection module U3, single-chip microcomputer makes the PWM ripple effective after handling, thus LED lights.
But photosensitive detection circuit testing environment light.Photosensitive detection circuit comprises modulus conversion chip U2, photo resistance R3, fixed value resistance R5, potentiometer R4 and fixed value resistance R6.Photo resistance R3 and fixed value resistance R5 are connected into bleeder circuit, the CH1 passage of output termination modulus conversion chip U2 in the middle of this bleeder circuit; When extraneous light deepening, the R3 resistance increases, R3 and R5 tie point voltage can change, get data signal after the modulus conversion chip U2 output conversion, the P1.7 port that is input to single-chip microcomputer U1 with serial mode is handled, single-chip microcomputer compares input value and the standard value that is stored in the single-chip microcomputer, and relatively the bright dark of LED controlled at the PWM ripple of the 9th pin output different duty of single-chip microcomputer in the back, the effect of realization stable environment light.Modulus conversion chip U2 selects ADC0832 for use.Simulate the variation of photosensitive resistance with a potentiometer, equally this analog signal is carried out analog-to-digital conversion and be input to single-chip microcomputer and just can realize manual dimming function.Its circuit is achieved in that potentiometer R4 and fixed value resistance R6 also form bleeder circuit, and output connects the CH0 passage of modulus conversion chip U2 in the middle of it.
Single-chip microcomputer is a main control unit, and single-chip microcomputer is selected AT89C2051 for use, and its crystal oscillator adopts 12MHz.Switch S 2 is used for selecting manual light modulation or automatically steady light, and when S2 pressed, single-chip microcomputer P1.2 port obtained high level, and single-chip microcomputer is handled the back modulus conversion chip U2 is carried out the initialization setting, selects for use the CH0 port to carry out manual light modulation.When S2 does not press, single-chip microcomputer P1.2 port is a low level, and it is with an automatic light meter that single-chip microcomputer initialization modulus conversion chip U2 selects for use the CH1 port to carry out.Button S3 and S4 are used for setting the steady light effect of user's expectation.S3 presses, and stablizes light and strengthens; S4 presses, and stable light dies down.
Because the P3.5 port of single-chip microcomputer output PWM ripple can not directly drive the LED desk lamp of being made up of 32 LED lamp pearls, comes this pwm signal is amplified and driving LED lamp pearl array so use a Darlington transistor Q1, Darlington transistor Q1 selects 2N7053 for use.LED lamp pearl is selected the astigmatic luminous tube diode of high brightness for use, and the voltage of each lamp pearl is 3.6V, and lighting operating current is 30mA, adopts 2 LED fluorescent tube series connection, carries out parallel connection with 16 groups again and drives.
Above-mentioned modulus conversion chip U2 also can adopt 8 integrated modulus conversion chips of TLC0832CP two passages.
Above-mentioned Darlington transistor Q1 also can adopt TIP41C NPN type Darlington amplifying triode.
The automatically steady photocontrol that the utlity model has the LED desk lamp of automatically steady light function is not only applicable to the LED desk lamp, and can also be applied to chamber lamp, corridor lamp and street lamp etc., has wider range of application.

Claims (4)

1. one kind has automatically the surely LED desk lamp of light function, comprise power circuit and LED, after power circuit becomes alternating current into direct current, luminous through the voltage-stabiliser tube step-down for LED, it is characterized in that: described LED desk lamp with automatically steady light function also comprises intednsity circuit, and intednsity circuit comprises single-chip microcomputer, infrared detection module, photosensitive detection circuit, drive circuit; But infrared detection module perception human body, if there is the people then to export high level, nobody is output low level then, output signal is delivered to single-chip microcomputer and handles; But photosensitive detection circuit testing environment light, detection signal also is delivered to single-chip microcomputer; Single-chip microcomputer is a main control unit, to the input signal computing after drive circuit control LED light on and off.
2. the LED desk lamp with automatically steady light function according to claim 1, it is characterized in that: also comprise the voltage-stabiliser tube that the intednsity circuit operating voltage is provided in the mu balanced circuit, power voltage supply single-chip microcomputer, infrared detection module and the photosensitive detection circuit of this voltage-stabiliser tube output.
3. the LED desk lamp with automatically steady light function according to claim 1, it is characterized in that: photosensitive detection circuit comprises modulus conversion chip U2, photo resistance R3, fixed value resistance R5, potentiometer R4 and fixed value resistance R6, photo resistance R3 and fixed value resistance R5 are connected into bleeder circuit, the CH1 passage of output termination modulus conversion chip U2 in the middle of this bleeder circuit; Potentiometer R4 and fixed value resistance R6 also form bleeder circuit, and output connects the CH0 passage of modulus conversion chip U2 in the middle of it.
4. the LED desk lamp with automatically steady light function according to claim 1, it is characterized in that: drive circuit is a Darlington transistor.
CNU2007200695129U 2007-04-29 2007-04-29 LED desk lamp with automatic light stabilizing function CN201037611Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007200695129U CN201037611Y (en) 2007-04-29 2007-04-29 LED desk lamp with automatic light stabilizing function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102170736A (en) * 2011-03-16 2011-08-31 黄勇 Automatic luminance stabilizing desk lamp
CN102271444A (en) * 2010-06-07 2011-12-07 宇达电脑(上海)有限公司 Induction type illuminating system
CN102594300A (en) * 2011-01-12 2012-07-18 富泰华工业(深圳)有限公司 Light-operated signal generating circuit
CN101900837B (en) * 2009-05-27 2012-09-05 盛群半导体股份有限公司 Pyroelectric type infrared detector and control method thereof
CN102692941A (en) * 2012-06-01 2012-09-26 吉林大学 Self-adaptive control device of optical characteristic point light intensity
CN102711326A (en) * 2012-05-23 2012-10-03 岳西县泉源盛工艺品有限公司 Control circuit of LED (light emitting diode) energy saving lamp
CN102811525A (en) * 2011-05-31 2012-12-05 海洋王照明科技股份有限公司 LED lamp and control circuit thereof
CN103118468A (en) * 2013-02-19 2013-05-22 广州从兴电子开发有限公司 Method and device for remotely controlling LED streetlamp
CN103118469A (en) * 2013-02-19 2013-05-22 广州从兴电子开发有限公司 Method and device for controlling LED streetlamp
CN103152904A (en) * 2012-11-23 2013-06-12 珠海格林赛威科技有限公司 Integrated intelligent control light-emitting diode (LED) lamp
CN103582227A (en) * 2012-08-09 2014-02-12 深圳市海洋王照明工程有限公司 Dimming control circuit and lamp
CN103925548A (en) * 2014-04-08 2014-07-16 浙江理工大学 Acoustic-control energy-saving table lamp
CN105848377A (en) * 2015-01-14 2016-08-10 苏州力生美半导体有限公司 Flashing light control chip
CN106535389A (en) * 2016-10-08 2017-03-22 四川云在天上科技有限公司 Functional desk lamp based on eyesight protection
CN107270181A (en) * 2017-06-28 2017-10-20 太仓市普利照明电器有限公司 A kind of lighting device with dehumidification function
CN109089359A (en) * 2018-08-22 2018-12-25 江苏优为视界科技有限公司 A kind of SCM Based fluorescent lamp automatic light modulation device
CN109526097A (en) * 2018-11-06 2019-03-26 罗曦芃 Intelligent LED desk lamp

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101900837B (en) * 2009-05-27 2012-09-05 盛群半导体股份有限公司 Pyroelectric type infrared detector and control method thereof
CN102271444A (en) * 2010-06-07 2011-12-07 宇达电脑(上海)有限公司 Induction type illuminating system
CN102594300A (en) * 2011-01-12 2012-07-18 富泰华工业(深圳)有限公司 Light-operated signal generating circuit
CN102594300B (en) * 2011-01-12 2016-08-17 富泰华工业(深圳)有限公司 Light-operated signal generating circuit
CN102170736A (en) * 2011-03-16 2011-08-31 黄勇 Automatic luminance stabilizing desk lamp
CN102811525A (en) * 2011-05-31 2012-12-05 海洋王照明科技股份有限公司 LED lamp and control circuit thereof
CN102711326A (en) * 2012-05-23 2012-10-03 岳西县泉源盛工艺品有限公司 Control circuit of LED (light emitting diode) energy saving lamp
CN102692941A (en) * 2012-06-01 2012-09-26 吉林大学 Self-adaptive control device of optical characteristic point light intensity
CN103582227A (en) * 2012-08-09 2014-02-12 深圳市海洋王照明工程有限公司 Dimming control circuit and lamp
CN103152904A (en) * 2012-11-23 2013-06-12 珠海格林赛威科技有限公司 Integrated intelligent control light-emitting diode (LED) lamp
CN103118469A (en) * 2013-02-19 2013-05-22 广州从兴电子开发有限公司 Method and device for controlling LED streetlamp
CN103118468B (en) * 2013-02-19 2015-10-07 从兴技术有限公司 A kind of LED street lamp long-range control method and device
CN103118469B (en) * 2013-02-19 2016-05-25 广东南能汇智节能科技有限公司 A kind of LED method for controlling street lamps and device
CN103118468A (en) * 2013-02-19 2013-05-22 广州从兴电子开发有限公司 Method and device for remotely controlling LED streetlamp
CN103925548A (en) * 2014-04-08 2014-07-16 浙江理工大学 Acoustic-control energy-saving table lamp
CN105848377A (en) * 2015-01-14 2016-08-10 苏州力生美半导体有限公司 Flashing light control chip
CN106535389A (en) * 2016-10-08 2017-03-22 四川云在天上科技有限公司 Functional desk lamp based on eyesight protection
CN107270181A (en) * 2017-06-28 2017-10-20 太仓市普利照明电器有限公司 A kind of lighting device with dehumidification function
CN109089359A (en) * 2018-08-22 2018-12-25 江苏优为视界科技有限公司 A kind of SCM Based fluorescent lamp automatic light modulation device
CN109526097A (en) * 2018-11-06 2019-03-26 罗曦芃 Intelligent LED desk lamp

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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: 20080319

Termination date: 20100429