CN112312608A

CN112312608A - Intelligent eye protection desk lamp

Info

Publication number: CN112312608A
Application number: CN202011070135.7A
Authority: CN
Inventors: 王坤
Original assignee: Hefei Keshi Electronic Technology Co ltd
Current assignee: Hefei Keshi Electronic Technology Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-02-02

Abstract

The invention discloses an intelligent eye-protecting desk lamp which comprises an external power supply, a main control module, a reflected light sensor, an ambient light sensor, a human body induction module, a sound input module, a touch input module, a cold light LED module, a warm light LED module, an acoustic-optical prompt output module, an ultrasonic distance measurement module, a necessary lamp body structure and the like, wherein the main control module collects information of ambient light, reflected light, sound, human body infrared, distance and the like, and controls the cold and warm light LED modules to automatically switch on and off or output corresponding light quantities after comprehensive processing by embedded software. The intelligent eye-protecting desk lamp provided by the invention realizes intelligent control of automatic switching, brightness adjustment and the like of the LED desk lamp by collecting signals of ambient light intensity, reflected light, sound, human body infrared and the like, provides proper lighting conditions for activities such as reading, writing and the like of a user, protects the eyesight of the user and avoids electric energy waste caused by forgetting to turn off the lamp of the user.

Description

Intelligent eye protection desk lamp

Technical Field

The invention relates to the field of LED lighting, in particular to an eye-protecting desk lamp with an intelligent switch dimming function.

Background

The desk lamp is a key lighting lamp in a specific range commonly used by people during reading and writing, a tungsten filament incandescent lamp is firstly applied after electric luminous lighting appears, the tungsten filament lamp has the advantages of easiness in dimming, continuous light emitting, no power frequency flicker and the like, but the tungsten filament lamp is gradually replaced by a traditional energy-saving lamp and an LED lamp due to short service life and high energy consumption, the traditional energy-saving lamp has the problems of short service life, difficulty in dimming, power frequency flicker and the like, the traditional energy-saving lamp is gradually replaced after the development of an LED lighting technology, the LED desk lamp has the advantages of easiness in dimming, long service life, high light efficiency and the like, the power frequency flicker can be solved through a power supply constant current driving technology, and the desk lamp occupies a main.

Data published in "white skin book for eye health of China: the total myopia rate of teenagers of nationwide children in 2018 is 53.6%, wherein the myopia rates of 6-year-old children, pupils, junior and senior high school students are 14.5%, 36.0%, 71.6% and 81.0%, the myopia rates of 15 provinces are higher than the average nationwide level, and the myopia rates of 24 provinces are higher than 50%. As can be seen from the above data, the problem of myopia underage is very severe, with over one third of pupils being myopic. The myopia of the young children is caused by a plurality of reasons, such as too heavy burden of learning, irregular sitting posture, too much use of electronic screens, reading and writing under improper light, and the like, the common energy-saving lamp and the LED lamp have low-frequency flicker which is easy to ignore, and reading and writing under the condition of too bright or too dark light easily causes visual fatigue, and when the visual fatigue occurs, the sitting posture is easy to be incorrect, the eyes are close to the reading and writing target points unconsciously, and the myopia is accelerated. For example, the illumination of a reading surface is reasonable in the range of 500lx-600lx during reading and writing, some illuminating lamps are kept in the surrounding environment of the desk lamp during reading and learning, and the illumination ratio of the working surface to the environment brightness is in a reasonable range (for example, not higher than 10: 3), so that the eyes receive light reasonably and are not easy to fatigue.

The school children have heavy learning tasks, long reading and writing operation time and extremely easy fatigue of eyesight; the eyes of the school-age children are still in the development process, the adaptability of the eyes to light rays is strong, even though parents provide a non-stroboscopic desk lamp capable of being controlled by manual dimming, the situations that the light cannot be reasonably dimmed and the lamp is forgotten to be turned on can still occur, and therefore the situation that the eyes are tired for a long time to cause myopia is caused. In order to solve visual fatigue caused by power frequency flash, LED table lamps with eye protection concepts are provided by manufacturers, the problem of power frequency flash of the LED lamps is mainly solved by adopting a constant current driving technology in a mode of improving the switching frequency of light source output and reducing LED luminous ripple current, manual or voice brightness adjustment and color temperature adjustment functions are provided for some products to meet the personalized requirements of users, but the problem that the visual fatigue of readers is relieved by reasonably adjusting the light output according to the ambient light and the brightness change of the reading surface when reading illumination is not provided.

The invention provides a desk lamp which is low in cost, can automatically turn on and turn off the lamp, can automatically adjust the light according to parameters such as ambient light, illumination of a reading surface and the like, has the functions of reminding background light to turn on and prompt and the like, and can systematically solve the problems of reading and learning lighting.

Disclosure of Invention

The invention aims to provide an intelligent eye-protecting desk lamp, which solves the problems that the lamp cannot be automatically turned on and off, the brightness output can be automatically adjusted according to the ambient light and the reading surface brightness and the like in the using process of a common desk lamp at lower cost.

The present invention adopts the following technical solutions to solve the above technical problems.

An intelligent eye-protecting desk lamp is structurally characterized by comprising an external power supply, a main control module, a reflected light sensor, an ambient light sensor, a human body induction module, a sound input module, a touch input module, a cold light LED module, a warm light LED module, a sound and light prompt output module, an ultrasonic distance measurement module, a necessary lamp body structure and the like; the external power supply provides a voltage-stabilizing direct-current working power supply for each module of the system; the main control module is a processor with storage and processing functions; the signal output ports of the reflected light sensor, the ambient light sensor, the human body sensing module, the sound input module, the touch control input module, the ultrasonic distance measurement module and the like are connected with the signal input port of the main control module, and the main control module comprehensively judges all input signals by embedded software and then outputs a high-frequency PWM signal to control the cold light LED module and the warm light LED module to emit light with corresponding light quantity; the main control module receives all signals, outputs control signals after the signals are input and comprehensively judged by embedded software, and controls the acousto-optic prompt output module to send out corresponding acousto-optic prompt signals.

The structure of the intelligent eye-protecting desk lamp is also characterized in that:

the reflected light sensor and the ambient light sensor are photosensitive electronic elements, the resistance value of the reflected light sensor and the resistance value of the ambient light sensor change along with the change of the received light intensity of the light receiving surface, and the change of the resistance value is converted into a voltage signal and then output to the main control module; the light-reflecting sensor is arranged on the lamp body structure, and the light-receiving surface of the light-sensitive element of the lamp body structure is not directly irradiated by an external light source and can receive more primary reflected light rays emitted by the cold light LED module and the warm light LED module; the ambient light sensor is arranged on the lamp body structure, and the light receiving surface of the light sensitive element of the lamp body structure receives the main ambient light irradiation and is not irradiated by the cold light LED module and the warm light LED module directly or by primary reflected light; the main control module collects the ambient light brightness and the reflected light brightness input by the reflected light sensor and the ambient light sensor as main basis for controlling the brightness output of the cold light LED module and the warm light LED module by the embedded software; the touch input module is composed of a plurality of touch keys, the key scanning sampling end is connected with the key signal detection port of the main control module and used as a selection basis for control operations such as forced lamp turning on and off, brightness and color temperature adjustment and the like, and the main control module receives and stores signals input by the touch input module; the sound and light prompt output module comprises a loudspeaker and a plurality of LED indicator lamps, the control ports are connected with the main control module, and the main control module controls the sound and light prompt output module to give out sound and light prompts; the ultrasonic distance measurement module has ultrasonic wave emission and ultrasonic wave receiving function, and signal transmission control port and signal reception output port are connected with main control module, and main control module begins the timing to wait for the ultrasonic wave reflection signal after sending ultrasonic emission signal to ultrasonic distance measurement module, and main control module calculates the distance of cold light LED module, warm light LED module light emitting area central point apart from the plane of reflection central point through calculating the time difference of transmitting ultrasonic signal and receiving ultrasonic signal, and this distance is as one of the basis of control cold light LED module, warm light LED module luminance output.

The human body induction module comprises a Fresnel lens, an infrared induction sensor and a signal amplification module; human infrared signal gets into infrared induction sensor's infrared induction unit after fresnel lens filters, and infrared induction sensor converts the human infrared signal who senses into weak signal of telecommunication and exports signal amplification module, and signal amplification module exports the human infrared signal who amplifies to main control module.

The sound input module comprises an audio sensor and an audio amplification module; the audio signal is transmitted to the audio sensor in a sound wave mode, the audio sensor converts the received audio signal into a weak electric signal and transmits the weak electric signal to the audio amplification module, the audio amplification module outputs the amplified audio signal to the main control module, and the main control module takes the audio signal acquired from the audio amplification module as one of bases of the delayed switch lamp.

The cold light LED module comprises an LED current control unit, a current sampling resistor, a fly-wheel diode, a current stabilizing capacitor, an energy storage inductor, a switching tube and an LED light source module; the current sampling resistor, the LED light source module and the energy storage inductor form series connection, and the other end of the energy storage inductor is divided into two paths: one path is connected with the switching tube, and the other path is connected with the anode of the fly-wheel diode; two ends of the current stabilizing capacitor are connected in parallel to two ends of a series circuit formed by the current sampling resistor and the LED light source module so as to stabilize the voltage at two ends of the series circuit of the current sampling resistor and the LED light source module; the switch signal input end of the LED current control unit is connected with the main control module; the LED light source module is formed by connecting high-color-temperature cold-color light LED lamp beads in series and in parallel; the warm light LED module and the cold light LED module have the same circuit structure, and the difference is that an LED light source module of the warm light LED module consists of low-color-temperature warm-color light LED lamp beads; the main control module sends out high-frequency pulse width modulation signals through the control end to respectively control the warm light LED module and the cold light LED module to send out light with corresponding light quantity, and the light with the two color temperatures is mixed in the lamp body to form light with the required color temperature.

Compared with the prior art, the invention has the beneficial effects that:

because the reflected light sensor, the ambient light sensor, the infrared human body induction module, the sound input module, the ultrasonic distance measurement sensor, the cold light LED module, the warm light LED module, the acousto-optic prompt output module and the like are adopted, the intelligent eye-protecting desk lamp has the following functions:

(1) sound collection and human infrared dual induction switch lamp function: compared with radar electromagnetic wave type induction, the human body infrared induction is short in distance and strong in directivity, the possibility of turning on the lamp due to misjudgment of a human body infrared induction mode is lower, but the influence of the human body infrared induction on the environment temperature is larger, and particularly, the human body keeps static or is slightly far away, and the possibility of misjudgment of no human body movement is caused, so that the lamp is turned off by mistake; due to the fact that sound collection and infrared human body induction double signal judgment are arranged, the possibility of misjudging turning on and off the lamp is greatly reduced, and electric energy waste and service life reduction caused by the fact that a common desk lamp forgets to turn off the lamp are avoided;

(2) automatic dimming: the environment light sensor, the reflection light sensor and the ultrasonic distance measuring module are arranged, the environment light brightness, the user reading surface brightness and the distance between the light emitting surface and the reading surface can be collected, and the collection application of the data can realize that: when the environment light is strong and good reading illumination can be provided, the intelligent eye-protecting desk lamp does not turn on, and when the environment light is lower than the reading requirement, the output brightness value of the light source is automatically adjusted according to the brightness value of the environment light, the brightness value of the emitted light and the distance between the light source and the irradiation central plane of the light source;

(3) LED light source constant current luminous no stroboflash: an AC-DC external power supply is arranged to provide a voltage-stabilizing direct-current working power supply for a system module, the LED light source is driven by adopting high-frequency switch current stabilization, the switching frequency exceeds 400KHz, uninterrupted current is provided for the LED light source through an energy storage inductor and a freewheeling diode loop, current stabilization capacitance is arranged to reduce current fluctuation, the constant current driving of the LED light source is realized, and the aim of non-stroboscopic light emitting of the LED light source is fulfilled;

(4) the acousto-optic alarm prompt function of insufficient ambient light is as follows: the system is provided with an ambient light sensor and an acousto-optic prompt output module, when the ambient light is insufficient and the basic lighting source needs to be turned on to match with lighting, the acousto-optic prompt output module gives out acousto-optic prompt to remind a user to turn on the basic lighting lamp so as to reasonably configure reasonable proportion of ambient light brightness and working face key area brightness, and relieve eye fatigue of the user; the user can forcibly shut down the audible and visual alarm prompt through the touch input module.

Drawings

Fig. 1 is a block diagram of an intelligent eye-protecting desk lamp according to the invention.

Fig. 2 is a block diagram of a human body sensing module of the intelligent eye-protecting desk lamp.

Fig. 3 is a block diagram of a sound input module of the intelligent eye-protecting desk lamp according to the invention.

Fig. 4 is a block diagram of a cold light LED module of the intelligent eye-protecting desk lamp according to the invention.

Reference numerals in fig. 1 to 4: 1. an external power supply; 2. a main control module; 3. a reflective light sensor; 4. an ambient light sensor; 5. a human body induction module; 6. a sound input module; 7. a touch input module; 8. a cold light LED module; 9. a warm light LED module; 10. an acousto-optic prompt output module; 11. an ultrasonic ranging module; 51. a Fresnel lens; 52. an infrared induction sensor; 53. a signal amplification module; 61. an audio sensor; 62. an audio amplification module; 81. an LED current control unit; 82. a current sampling resistor; 83. a freewheeling diode; 84. a current stabilizing capacitor; 85. an energy storage inductor; 86. a switching tube; 87. LED light source module.

The present invention will be further described with reference to the following detailed description and accompanying drawings.

Detailed Description

Referring to fig. 1, an intelligent eye-protecting desk lamp comprises an external power supply 1, a main control module 2, a reflected light sensor 3, an ambient light sensor 4, a human body induction module 5, a sound input module 6, a touch input module 7, a cold light LED module 8, a warm light LED module 9, an acousto-optic prompt output module 10, an ultrasonic distance measurement module 11, a necessary lamp body structure and the like; the external power supply 1 provides a voltage-stabilizing direct-current working power supply for each module of the system; the main control module 2 is a processor with storage and processing functions; the signal output ports of the reflected light sensor 3, the ambient light sensor 4, the human body induction module 5, the sound input module 6, the touch control input module 7, the ultrasonic distance measurement module 11 and the like are connected with the signal input port of the main control module 2, and the main control module 2 comprehensively judges input signals by embedded software and then outputs a high-frequency PWM (pulse width modulation) signal to control the cold light LED module 8 and the warm light LED module 9 to emit light with corresponding light quantity; the main control module 2 receives all signal inputs, outputs control signals after being comprehensively judged by embedded software, and controls the acousto-optic prompt output module 10 to send out corresponding acousto-optic prompt signals; the main control module 2 receives all signal inputs, outputs control signals after being comprehensively judged by embedded software, and controls the acousto-optic prompt output module 10 to send out corresponding acousto-optic prompt signals; the reflection light sensor 3 and the ambient light sensor 4 are all photosensitive electronic elements, the resistance value of the reflection light sensor changes along with the change of the received light intensity of the light receiving surface, and the resistance value changes and is converted into a voltage signal which is then output to the main control module 2; the light-reflecting sensor 3 is arranged on a lamp body structure, and the light-receiving surface of a light-sensitive element of the lamp body structure is not directly irradiated by an external light source and can receive more primary reflected light rays emitted by the cold light LED module 8 and the warm light LED module 9; the ambient light sensor 4 is arranged on the lamp body structure, and the light receiving surface of the light sensitive element of the lamp body structure receives the main ambient light irradiation and is not irradiated by the cold light LED module 8 and the warm light LED module 9 directly and is not irradiated by the primary reflected light; the main control module 2 uses the ambient light brightness and the reflected light brightness obtained by the reflected light sensor 3 and the ambient light sensor 4 as main basis for controlling the brightness output of the cold light LED module 8 and the warm light LED module 9 by embedded software; the touch input module 7 is composed of a plurality of touch keys, a key scanning sampling end is connected with a key signal detection port of the main control module 2 and used as a selection basis for control operations such as forced light turning on and off, brightness and color temperature adjustment, and the main control module 2 receives and stores signals input by the touch input module 7; the acousto-optic prompt output module 10 comprises a loudspeaker and a plurality of LED indicator lamps, the control ports are all connected with the main control module 2, and the main control module 2 controls the acousto-optic prompt output module 10 to send out acousto-optic prompts; ultrasonic ranging module 11 has ultrasonic emission and ultrasonic wave receiving function, signal emission control port and signal reception control port are connected with host system 2, host system 2 begins timing after sending ultrasonic emission signal to ultrasonic ranging module 11 and waits for ultrasonic wave reflection signal, host system 2 calculates cold light LED module 8 through the time difference of calculating transmission ultrasonic signal and receiving ultrasonic signal, warm light LED module 9 light emitting area central point puts the distance from plane of reflection central point, this distance is as one of the basis of control cold light LED module 8, warm light LED module 9 luminance output.

As shown in fig. 2, the human body sensing module includes a fresnel lens 51, an infrared sensing sensor 52, and a signal amplifying module 53; the human body infrared signal is filtered by the fresnel lens 51 and enters the infrared sensing unit of the infrared sensing sensor 52, the infrared sensing sensor 52 converts the sensed human body infrared signal into a weak electric signal and outputs the weak electric signal to the signal amplification module 53, and the signal amplification module 53 outputs the amplified human body infrared signal to the main control module; because the intensity of the human body infrared signal is small, the sensing signal entering the infrared sensing sensor 52 through the Fresnel lens 51 is very weak, and the signal amplification module is set to be two-stage amplification and then output to the main control module.

As shown in fig. 3, the sound input module 6 includes an audio sensor 61, an audio amplification module 62; the audio signal is transmitted to the audio sensor 61 in the form of sound wave, the audio sensor 61 converts the received audio signal into a weak electrical signal and transmits the weak electrical signal to the audio amplification module 62, the audio amplification module 62 outputs the amplified audio signal to the main control module, and the main control module takes the audio signal acquired from the audio amplification module 62 as one of the bases for turning on and off the lamp.

As shown in fig. 4, the luminescence LED module includes an LED current control unit 81, a current sampling resistor 82, a freewheeling diode 83, a current stabilizing capacitor 84, an energy storage inductor 85, a switching tube 86, and an LED light source module 87; the current sampling resistor 82, the LED light source module 87 and the energy storage inductor 85 form series connection, and the other end of the energy storage inductor 85 is divided into two paths: one path is connected with the switching tube 86, and the other path is connected with the anode of the fly-wheel diode 82; two ends of the current stabilizing capacitor 84 are connected in parallel to two ends of a series circuit formed by the current sampling resistor 82 and the LED light source module 87, so as to stabilize the voltage at two ends of the series circuit formed by the current sampling resistor 82 and the LED light source module 87; the switch signal input end of the LED current control unit 81 is connected with the main control module; the LED light source module 87 is formed by connecting high-color-temperature cold-color LED lamp beads in series and in parallel; the LED current control unit 81 is internally provided with a self-excited oscillator which controls the on-off of the current turn-off control switch tube 86 by a fixed frequency, when the LED current control unit is switched on, the current is switched on to the negative power end of the system power supply through the current sampling resistor 82, the LED light source module 87, the energy storage inductor 85 and the switch tube 86, the LED current control unit 81 compares the voltages at two ends of the current sampling resistor 82 in real time, when the voltage difference at two ends of the current sampling resistor 82 is larger than a set value, the LED current control unit 81 turns off the input switch tube 86, the current, and after the current is switched off, a current loop of the energy storage inductor 85, the fly-wheel diode 83, the current sampling resistor 82 and the LED light source module 87 is formed by utilizing the energy. The built-in oscillating circuit of LED current control unit 81 provides fixed frequency reciprocating control switch tube 86 break-make, realizes the current control of LED lamp pearl, for improving LED light source light output stability, this frequency is 400KHz in the embodiment. The constant current wave capacitor 84 plays a role in removing ripples of the voltage at two ends of the LED lamp bead so as to realize smaller current fluctuation and improve the constant current control precision.

As shown in fig. 1 and 4, the warm light LED module 9 and the cool light LED module 8 have the same circuit structure, except that the LED light source module of the warm light LED module 9 is composed of low color temperature warm color light LED lamp beads; the main control module 2 respectively controls the warm light LED module 9 and the cold light LED module 8 to emit light with corresponding light quantity by emitting a high-frequency pulse width modulation signal through the control end, and the light with the two color temperatures is mixed in the lamp body to form light with the required color temperature; the main control module 2 respectively controls the cold light LED module 8 and the warm light LED module 9 to emit light with corresponding color temperature and brightness by outputting two paths of high-frequency pulse width modulation signals; in order to improve the light output stability of the LED light source, the pulse width frequency is 1KHz, the maximum current fluctuation is less than 5%, and the real high-frequency flicker-free effect is realized.

As shown in fig. 1, the external power supply 1 is an AC-DC conversion power supply, and converts input power frequency alternating current into stable direct current to provide a stable direct current working power supply for each module of the system. The main control module 2 is a microprocessor with AD conversion, storage and calculation processing functions, and the main control module 2 acquires irradiation surface reflected light and background light intensity input by the photosensor 3 and the ambient light sensor 4 through AD conversion to be used as a basis for controlling brightness output by switching on and off a lamp and a built-in program; the ultrasonic distance measurement module 11 has ultrasonic wave transmitting and receiving functions, a signal transmitting control port and a signal receiving control port are connected with the main control module 2, the main control module 2 starts timing to wait for an ultrasonic wave reflection signal after transmitting an ultrasonic wave signal to the ultrasonic distance measurement module 11, the main control module 2 calculates the distance from the center position of the light emitting surface of the cold light LED module 8 and the warm light LED module 9 to the center position of the reflection surface by calculating the time difference between the transmission of the ultrasonic wave signal and the reception of the ultrasonic wave signal, and the distance is used as one of the basis for controlling the brightness output of the cold light LED module 8 and the warm light LED module 9; the human body induction module 5 and the sound input module 6 are used as a human body pyroelectric infrared induction signal and an audio signal acquisition amplification module, the human body infrared induction signal and the audio signal are continuously acquired and output to the main control module 2, the main control module 2 is matched with a built-in program scene model according to the input human body induction signal and the input audio model to judge whether lighting output is required to be provided or not, and in combination with a background light intensity signal, a reflected light intensity signal, light source surface and reflecting surface center distance data, the main control module 2 outputs a high-frequency pulse width modulation signal to the cold light LED module and the warm light LED module to output proper brightness, the built-in program of the main control module 2 judges whether basic lighting lamps and the like need to be switched or not, if the ambient light is too bright, too dark and the like, the main control module 2 sends out acousto-optic prompt through controlling the acousto, The shading curtain is closed and pulled, so that the ambient light and the desk lamp are matched to provide proper reading and learning illumination; the main control module 2 is internally provided with a program for scanning the key input signal of the touch input module 7 at regular time, a user can forcibly turn on and turn off the lamp through the touch module 7 and set color temperature preference and brightness preference, and the main control module 2 memorizes the user preference and serves as the basis for outputting the brightness and the lamplight color temperature.

Through the above description, related personnel can change and modify the design idea and technical index of the invention under the specified conditions. The technical scope of the present invention is not limited to the contents of the specification, and must be determined in accordance with the scope of the claims.

Claims

1. An intelligent eye-protecting desk lamp is characterized by comprising an external power supply (1), a main control module (2), a reflected light sensor (3), an ambient light sensor (4), a human body induction module (5), a sound input module (6), a touch input module (7), a cold light LED module (8), a warm light LED module (9), an acousto-optic prompt output module (10), an ultrasonic ranging module (11), a necessary lamp body structure and the like; the external power supply (1) provides a voltage-stabilizing direct-current working power supply for each module of the system; the main control module (2) is a processor with storage and processing functions; the signal output ports of the reflected light sensor (3), the ambient light sensor (4), the human body induction module (5), the sound input module (6), the touch control input module (7), the ultrasonic distance measurement module (11) and the like are connected with the signal input port of the main control module (2), and the main control module (2) outputs a high-frequency pulse width modulation signal to control the cold light LED module (8) and the warm light LED module (9) to emit light with corresponding light quantity after comprehensively judging input signals by embedded software; the main control module (2) receives all signal inputs, outputs control signals after being comprehensively judged by embedded software, and controls the acousto-optic prompt output module (10) to send out corresponding acousto-optic prompt signals;

the reflection light sensor (3) and the ambient light sensor (4) are all photosensitive electronic elements, the resistance value of the reflection light sensor changes along with the change of the received light intensity of the light receiving surface, and the resistance value changes and is converted into a voltage signal to be output to the main control module (2); the light-reflecting sensor (3) is arranged on a lamp body structure, and the light-receiving surface of a light-sensitive element of the lamp body structure is not directly irradiated by an external light source and can receive more primary reflected light rays emitted by the cold light LED module (8) and the warm light LED module (9); the environment light sensor (4) is arranged on the lamp body structure, and the light receiving surface of the light sensitive element of the lamp body structure receives main environment light irradiation and is not irradiated by the cold light LED module (8) and the warm light LED module (9) directly or by primary reflected light; the main control module (2) collects the ambient light brightness and the reflected light brightness input by the reflected light sensor (3) and the ambient light sensor (4) as the main basis for controlling the brightness output of the cold light LED module (8) and the warm light LED module (9) by embedded software; the touch input module (7) is composed of a plurality of touch keys, a key scanning sampling end is connected with a key signal detection port of the main control module (2) and used as a selection basis for control operations such as forced turning on and off of a lamp, brightness and color temperature adjustment and the like, and the main control module (2) receives and stores signals input by the touch input module (7); the acousto-optic prompt output module (10) comprises a loudspeaker and a plurality of LED indicator lamps, the controlled ports are connected with the main control module (2), and the main control module (2) controls the acousto-optic prompt output module (10) to give out acousto-optic prompts; ultrasonic ranging module (11) has ultrasonic emission and ultrasonic wave receiving function, signal transmission control port and signal reception output port are connected with host system (2), host system (2) begin the timing to wait for the ultrasonic wave reflection signal after sending ultrasonic emission signal to ultrasonic ranging module (11), host system (2) calculate cold light LED module (8) through the time difference of calculating transmission ultrasonic signal and receiving ultrasonic signal, warm light LED module (9) light emitting area central point puts the distance apart from plane of reflection central point, this distance is as one of control cold light LED module (8), warm light LED module (9) luminance output's basis.

2. The intelligent eye-protecting desk lamp of claim 1, wherein the human body induction module (5) comprises a Fresnel lens (51), an infrared induction sensor (52) and a signal amplification module (53); human infrared pyroelectric signal gets into the infrared induction unit of infrared induction sensor (52) after fresnel lens (51) filters, and infrared induction sensor (52) convert the human infrared signal who senses into weak signal of telecommunication and export signal amplification module (53), and signal amplification module (53) will be through human infrared signal output to host system (2) of enlarging.

3. An intelligent eye-protecting desk lamp as claimed in claim 1, wherein said sound input module (6) comprises an audio sensor (61), an audio amplification module (62); the audio signal is transmitted to the audio sensor (61) in a sound wave mode, the audio sensor (61) converts the received audio signal into a weak electric signal and transmits the weak electric signal to the audio amplification module (62), the audio amplification module (62) outputs the amplified audio signal to the main control module (2), and the main control module (2) takes the audio signal acquired from the audio amplification module (62) as one of bases of the delay switch lamp.

4. The intelligent eye-protecting desk lamp of claim 1, wherein the cold light LED module (8) comprises an LED current control unit (81), a current sampling resistor (82), a freewheeling diode (83), a current stabilizing capacitor (84), an energy storage inductor (85), a switching tube (86) and an LED light source module (87); current sampling resistor (82), LED light source module (87), energy storage inductance (85) form series connection, and energy storage inductance (85) other end divides two tunnel: one path is connected with a switching tube (86), and the other path is connected with the anode of a freewheeling diode (82); two ends of the current stabilizing capacitor (84) are connected in parallel to two ends of a series circuit formed by the current sampling resistor (82) and the LED light source module (87) so as to stabilize the voltage at two ends of the series circuit formed by the current sampling resistor (82) and the LED light source module (87); the switch signal input end of the LED current control unit (81) is connected with the main control module (2); the LED light source module (87) is formed by connecting high-color-temperature cold-color light LED lamp beads in series and parallel;

the warm light LED module (9) and the cold light LED module (8) have the same circuit structure, and the difference is that an LED light source module of the warm light LED module (9) consists of low-color-temperature warm-color light LED lamp beads; the main control module (2) controls the output port to send out a high-frequency pulse width modulation signal to respectively control the warm light LED module (9) and the cold light LED module (8) to send out light with corresponding light quantity, and the light with the two color temperatures is mixed in the lamp body to form light with the required color temperature.