CN203618185U

CN203618185U - LED dimming lamp device

Info

Publication number: CN203618185U
Application number: CN201320692697.4U
Authority: CN
Inventors: 李宏伟; 赵丽; 郑桐; 车艳秋; 任书艳; 边炎; 杨耿煌
Original assignee: Tianjin University of Technology
Current assignee: Tianjin University of Technology
Priority date: 2013-10-31
Filing date: 2013-10-31
Publication date: 2014-05-28
Anticipated expiration: 2023-10-31

Abstract

The utility model provides an LED dimming lamp device which is simple and varied in operation manner, high in control accuracy and uniform in illumination of a radiation area. The device comprises a main control module (1), a communication module (2), an upper computer (3), a key module (4), a display module (5), a driving module (6), an LED lamp panel (7) and a power module (8), wherein the communication module (2) is connected with the main control module (1); the upper computer (3) is connected with the communication module (2); the key module (4), the display module (5) and the driving module (6) are connected with the main control module (1); the LED lamp panel (7) is connected with the driving module (6); and the power module (8) is connected with the main control module (1). The dimming technology has the advantages of simple application, high efficiency and accuracy and good dimming effect.

Description

LED desk lamp with dimmer switch device

Technical field

The utility model relates to a kind of LED desk lamp with dimmer switch device, is specifically a kind ofly can change arbitrarily illumination to the different demands of intensity of illumination according to field of employment, and the uniform light fixture of brightness in irradiation area, belong to energy-saving LED lamp control field.

Background technology

Along with science and technology and social progress, also variation gradually of light fixture, the incandescent lamp high from power consumption, luminance is low to low in energy consumption, luminance is high but fluorescent lamp that the life-span is short, can go to change by remote control to the color of lamp from low price, energy consumption is low, luminance is high electricity-saving lamp, the life-span of lamp is longer, volume is less, an all-powerful LED light fixture in following decades, the advantages such as LED lamp has long working life, low-power consumption, the response time is fast, volume is little, lightweight, resistance to resistance, tunable optical, toning, environmental protection.But design LED light fixture also needs the method for being particular about, and the mode of LED light modulation mainly contains three kinds on the market at present: the one, and linearity light adjusting, the 2nd, controllable silicon light modulation, the 3rd, PWM light modulation.Linearity light adjusting is mainly based on simple voltage divider principle, and its advantage is that application is simple, does not produce interference, dumb, inefficiency that shortcoming is, and in reducing LED electric current, can cause that white light LEDs is offset to yellow spectrum, also can produce too much heat because of dividing potential drop simultaneously.A kind of dimming mode that thyristor regulating is only generally adopted at present in incandescent lamp and electricity-saving lamp application.Its operation principle be the waveform of input voltage is cut to ripple by the angle of flow after, produce a tangential output voltage waveforms.Apply tangential principle, can reduce the effective value of output voltage, reduce the power of normal load (ohmic load) with this.The advantage of controllable silicon light modulation is that operating efficiency is higher, stable performance.But based on its operation principle, time also there are some design defect in application, after the controlled silicon conducting that has its source in of defect, need one to maintain electric current and keep conducting, otherwise can return to cut-off state.Different controllable silicons maintains electric current difference, and conventionally between a few mA to tens mA, what have even reaches 50mA.And power is larger, need to maintain electric current just larger, if it is inadequate to maintain electric current, the angle of flow is unstable, the waveform of output also can be inhomogeneous, and can produce vibration and spike, just there will be flicker when upper when so unstable output being added to LED.Incandescent lamp is before owing to being linear load, and operating current generally all can exceed 50mA, so there will not be the phenomenon of flicker, therefore the controllable silicon dimmer that is applicable on the market at present incandescent lamp is not directly applied for LED product, need to carry out design improvement to meet the operating characteristic of LED to it.

Given this, the utility model has designed a kind of LED light fixture based on PWM light regulating technology.In the time carrying out pulse duration PWM light modulation, need to provide an extra pulse width modulation signal source.The pulse signal duty of inputting by change is recently modulated LED and is driven the grid control signal of chip to power field effect pipe, regulates by the object of LED size of current thereby reach.The advantage of this light regulating technology is that application is simple, efficiency is high, precision is high, and good dimming effect.

Summary of the invention

Technical problem to be solved in the utility model is, provides that a kind of mode of operation is simple, various and control precision is high, a kind of LED desk lamp with dimmer switch device of irradiation area uniform-illumination.

The technical solution adopted in the present invention is: a kind of LED desk lamp with dimmer switch device, comprises main control module (1); The communication module (2) being connected with main control module (1); What be connected with communication module (2) is host computer (3); The key-press module (4) being connected with main control module (1); The display module (5) being connected with main control module (1); The driver module (6) being connected with main control module (1); The LED lamp plate (7) that driver module (6) is connected; The power module (8) being connected with main control module (1).

What described main control module (1) was selected is ATmega16 single-chip minimum system module, for the processing of information.

What described communication module (2) was selected is RS485 serial communication, with host computer group-net communication.

Described host computer (3) is common PC.

Described key-press module (4) is for the instruction of input requirements, for the instruction of input requirements, having four buttons, is respectively that mode switching key, step value switch key, stepping add key, stepping subtracts key, and mode switching key can switch 6 kinds of illumination patterns fast.

6 kinds of illumination patterns, are respectively:

Pattern one: lamp goes out entirely

Pattern two: lamplight brightness 18%, the about 2000LUX of brightness

Pattern three: lamplight brightness 22%, the about 2500LUX of brightness

Pattern four: lamplight brightness 27%, the about 3000LUX of brightness

Pattern five: lamplight brightness 32%, the about 3500LUX of brightness

Pattern six: lamplight brightness 36%, the about 4500LUX of brightness

Step value switch key can be set 4 kinds of step-by-step systems, is respectively stepping 1,5,10,20.Press stepping and add key, illumination adds according to the stepping of setting, and presses stepping and subtracts key, and illumination subtracts according to the stepping of setting.

Described display module (5) adopts 12864 LCDs, the demonstration of corresponding numerical value during for pattern is switched, step value switches, stepping adds, stepping subtracts button operation, and the demonstration of current brightness percentage and real-time time.

What described driver module (6) was selected is that the LED constant-flow driver that DD311 single channel is exported is to aim at the chip that drives great power LED and design, for driving LED lamp plate.

The LED lamp plate that described LED lamp plate (7) is made up of 600 LED lamp.

Described power module (8) adopts the core devices of LM2576 series switch integrated regulator as ATmega16 single-chip microcomputer stabilized voltage power supply.

Accompanying drawing explanation

Fig. 1 is composition frame chart of the present utility model;

Fig. 2 is the utility model main control module circuit diagram;

Fig. 3 is the utility model communication module circuit diagram;

Fig. 4 is the utility model driver module circuit diagram;

Fig. 5 is the utility model key-press module circuit diagram;

Fig. 6 the utility model display module circuit diagram;

Fig. 7 is the utility model power module circuitry figure;

Embodiment

Below in conjunction with accompanying drawing and example, the utility model is described in further detail.

As shown in Figure 1, Control on Communication LED desk lamp with dimmer switch device of the present utility model, adopt the unified LED of adjusting lamp plate the method for brightness control, comprise main control module (1); The communication module (2) being connected with main control module (1); What be connected with communication module (2) is host computer (3); The key-press module (4) being connected with main control module (1); The display module (5) being connected with main control module (1); The driver module (6) being connected with main control module (1); The LED lamp plate (7) that driver module (6) is connected; The power module (8) being connected with main control module (1).

As shown in Figure 2, described main control module adopts low-power consumption microcontroller ATmega16 single-chip microcomputer, according to the instruction of key-press module input, calls corresponding program and unifies regulation and control, makes the brightness of LED lamp group reach even.

As shown in Figure 3, described RS485 serial communication, it for host computer group-net communication, reach button not only and can control the brightness of LED lamp plate, host computer also can be controlled the brightness of LED lamp plate.

As shown in Figure 4, what described driver module circuit diagram was selected is DD311LED constant-flow driver, and DD311 is the LED constant-flow driver of a single channel output, and built-in current mirror and current switch assembly are to aim at the chip that drives great power LED and design.DD311 can drive up to the Shen of 1 ampere and enter electric current (sink current), and ((IRE F) sets arbitrarily the size of output current can to see through adjustment reference input electric current.Output current value is about the IREF of 100 times, and IREF can by adjusting plug-in resistance or bias voltage, ((bias) voltage be set.Fine setting or the brightness enabling between bias voltage recoverable LED differ or realize overall brightness between plurality of LEDs and adjust simultaneously.The output of chip can bear the voltage up to 36V, supports the serial connection application of many great power LEDs.((Enable) can realize the high gray application of great power LED to built-in output enable end easily.For driving LED lamp plate.

As shown in Figure 5, described key-press module is made up of 4 buttons, for mode switching key, step value switch key, stepping add key, stepping subtracts key.

Mode switching key can switch 6 kinds of illumination patterns fast, by six kinds of patterns once just once switching illumination, and can cycling.

6 kinds of illumination patterns, are respectively:

Pattern one: lamp goes out entirely

Pattern two: lamplight brightness 18%, the about 2000LUX of brightness

Pattern three: lamplight brightness 22%, the about 2500LUX of brightness

Pattern four: lamplight brightness 27%, the about 3000LUX of brightness

Pattern five: lamplight brightness 32%, the about 3500LUX of brightness

Pattern six: lamplight brightness 36%, the about 4500LUX of brightness

(due to environment difference, brightness is as the criterion with actual measured value)

As shown in Figure 6, described display module adopts 12864 LCDs, the demonstration of corresponding numerical value when adding key, stepping and subtract key operation for mode switching key, step value switch key, stepping, and be that current brightness percentage and real-time time show, user friendly observation.

As shown in Figure 7, described power module circuitry figure LM2576 series switch integrated regulator provides power supply for whole control core system.

The utility model LED dimming lamp is direct current 24V power supply, after switching on power, LCD display shows computer control and manually controls two kinds of control modes, under manual control mode, can choose seeds by mode selecting key bright, also can regulate stepping step number by stepping key, realize the fine adjustment of brightness; Under computer control model, can control light fixture by host computer, system has RS485 communication interface, can connect at most 256 lamp groups, with host computer group-net communication, communication protocol is: address+brightness, as: host computer sends 0X030X7F, and the lamp plate brightness that address is 03 becomes 50%.

Claims

1. a LED desk lamp with dimmer switch device, has main control module (1); It is characterized in that, also comprise the communication module (2) being connected with main control module (1); What be connected with communication module (2) is host computer (3); The key-press module (4) being connected with main control module (1); The display module (5) being connected with main control module (1); The driver module (6) being connected with main control module (1); The LED lamp plate (7) that driver module (6) is connected; The power module (8) being connected with main control module (1).

2. LED desk lamp with dimmer switch device according to claim 1, it is characterized in that: described display module adopts 12864 LCDs, for pattern switch, step value switches, the demonstration of corresponding numerical value when stepping adds, stepping subtracts button operation, and the demonstration of current brightness percentage and real-time time.

3. LED desk lamp with dimmer switch device according to claim 1, is characterized in that: what described driver module was selected is that the LED constant-flow driver that DD311 single channel is exported is to aim at the chip that drives great power LED and design, for driving LED lamp plate.