CN206077739U - A kind of adjustable LED light device of brightness - Google Patents

Abstract

The utility model discloses a kind of adjustable LED light device of brightness, including：Single supply electrical level transferring chip, single chip computer device, numeral method device, operation device and LED circuit, single supply electrical level transferring chip, numeral method device, operation device and LED circuit are connected with single chip computer device respectively；Single chip computer device includes single-chip microcomputer, clock circuit and reset circuit；Single-chip microcomputer adopts STC89C52 single-chip microcomputers；Clock circuit is crystal oscillating circuit；Numeral method device includes LED digitron display screens and charactron circuit；Operation device includes four buttons, respectively opens key, close key, increases brightness key and reduce brightness key.This utility model to the multistage light modulation of LED, can just be adjusted brightness by the dutycycle for adjusting PWM, can accomplish good contrast using pwm pulse width modulation principle；This utility model control is simple, can more intuitively adjust the brightness of LED, meet demand.

Description

A kind of adjustable LED light device of brightness

Technical field

This utility model belongs to lighting field, specifically, is related to a kind of adjustable LED light device of brightness.

Background technology

LED, light emitting diode is a kind of semiconductor device of the solid-state that can convert electrical energy into visible ray, and it can be with Electricity is converted into light directly.The heart of LED is the chip of a quasiconductor, and one end of chip is attached on a support, and one end is Negative pole, the other end connect the positive pole of power supply, and whole chip is got up by epoxy encapsulation.

LED uses cold light source, and dazzle is little, radiationless, and harmful substance is not produced in use.The running voltage of LED is low, adopts DC driven mode, super low-power consumption (0.03～0.06W of single tube), the conversion of electric light power are close to 100%, under equal illumination effect Than conventional light source energy-conservation more than 80%.The environmental benefit of LED more preferably, no ultraviolet and infrared ray in spectrum, and garbage It is recyclable, without polluting, without mercury element, typical green illumination light source can be belonged to safe touch.

LED is solid cold light source, epoxy encapsulation, anti-vibration, and the part yet not loosened in lamp body does not have filament The shortcomings of luminous easily burning, heat deposition and light decay, service life, up to 60,000～100,000 hours, is the 10 of conventional light source service life More than times.LED stable performances, can under -30～+50 DEG C of environment normal work.

LED light source utilizes the red, green, blue principle of three primary colours, makes three kinds of colors grey with 256 grades under computer technology control Degree simultaneously arbitrarily mixes, you can produces 256X256X256 (i.e. 16777216) and plants color, forms different photochromic combinations.LED combination It is photochromic changeful, be capable of achieving colourful dynamic change effect and various images.

Compared with the illumination effect of conventional light source, LED light source is low pressure microelectronic product, has successfully merged computer skill Art, the network communications technology, image processing techniquess and embedded Control technology.Chip size used in traditional LED lamp is 0.25mmX0.25nm, and the size of illuminating LED typically will be in more than 1.0mmX1.0mm.The workbench of LED bare molding Formula structure, inverted pyramid structure and flip-chip design can improve its luminous efficiency, so as to send more light.LED is encapsulated The innovation of design aspect includes high-conductivity metals block substrate, flip-chip design and naked disk casting type lead frame etc., adopts this A little methods can design the device of high power, low thermal resistance, and the illumination of these devices than traditional LED product illumination more Greatly.

The application of LED light source is very flexible, can make the various forms of compact products of point, line, surface；It is different photochromic Combination and variation multiterminal, using sequential control circuit, can more reach colourful dynamic change effect.LED is extensive It is applied in various luminaires, such as battery powered flash lamp, miniature acoustic control lamp, safety flare, outdoor road and interior Stair illuminating lamp and building and labelling continuous illumination lamp.

On the other hand, national Lighting Industry exactly enters the great historic opportunities period that will realize great-leap-forward development, Particularly when people are going into well-to-do level society, people more pursue the comfortableness of Lighting Luminous Environment, energy-saving safety and individual Property.So in the future how energy saving and the problems such as improve lighting quality, people are further exerted doing Power.

Utility model content

In view of this, technical problem to be solved in the utility model be how energy-conservation and quickly adjust LED illumination dress The brightness put.

In order to solve above-mentioned technical problem, the utility model discloses a kind of adjustable LED light device of brightness, including： Single supply electrical level transferring chip, single chip computer device, numeral method device, operation device and LED circuit, the single supply level turn Change chip, the numeral method device, the operation device and the LED circuit to be connected with the single chip computer device respectively.

Further, the single chip computer device includes single-chip microcomputer, clock circuit and reset circuit.

Further, the single-chip microcomputer adopts STC89C52 single-chip microcomputers.

Further, the clock circuit is crystal oscillating circuit.

Further, the numeral method device includes LED digitron display screens and charactron circuit

Further, the operation device includes four buttons, respectively opens key, close key, increases brightness key and subtract Few brightness key.

Compared with prior art, this utility model can be obtained including following technique effect：

1) this utility model can pass through to adjust PWM's using pwm pulse width modulation principle to the multistage light modulation of LED Dutycycle can just adjust brightness, can accomplish good contrast.

2) this utility model control is simple, and the numeral method device may help to user and more intuitively adjust LED Brightness, meet different demands.

3) this utility model is with low cost, it is easy to produce in batches, is adapted to promote.

Certainly, implement arbitrary product of the present utility model to be not necessarily required to while reaching all the above technology effect Really.

Description of the drawings

Accompanying drawing described herein is used for providing further understanding to of the present utility model, constitutes of the present utility model one Point, schematic description and description of the present utility model is used to explain this utility model, does not constitute to of the present utility model Improper restriction.In the accompanying drawings：

Fig. 1 is the adjustable LED light device schematic diagram of brightness of this utility model embodiment.

Specific embodiment

Describe embodiment of the present utility model below in conjunction with drawings and Examples in detail, thereby to this utility model How application technology means come solve technical problem and reach technology effect realize that process can fully understand and implement according to this.

The utility model discloses a kind of adjustable LED light device of brightness, as shown in figure 1, including：Single supply level turns Change core 200, single chip computer device 100, numeral method device 300, operation device 400 and LED circuit 500, the single supply level Conversion chip 200, the numeral method device 300, the operation device 400 and the LED circuit 500 respectively with the monolithic Machine device 100 connects.

This utility model, can pass through to adjust accounting for for PWM to the multistage light modulation of LED using pwm pulse width modulation principle Empty ratio can just adjust brightness, can accomplish good contrast.

PWM is a digital signal in itself, and what its pulsewidth was represented is time width of the pulse in high level.Work as use When pwm signal adjusts LED brightness, the signal frequency of energization is changeless, and change is pulsewidth, and then changes signal Dutycycle.Although there is one section to be low level time width between a power on signal, when frequency reaches it is sufficiently high when Wait, with the naked eye do not see the state of LED cut-off, so illumination is stable, it is exactly that LED is put down in fact that pwm signal is adjusted Electric current is adjusted, so as to the brightness successfully to LED is adjusted.

Pwm signal can be produced using single-chip microcomputer, equally pwm signal can also be produced by analog electronic signal.But It is, for the design, to have selected and produce signal using MCU, because do so cost is relatively much lower, and it is more convenient Simply.

In the present embodiment, the single supply level conversion core 200 adopts MAX232, acts on the single chip computer device Microcomputer series interface communication and programming program in 100, MAX232 are the single supply level conversion for aiming at the design of rs-232 standard serial ports Chip.

In the present embodiment, the single chip computer device 100 includes single-chip microcomputer, clock circuit and reset circuit.

In the present embodiment, the single-chip microcomputer adopts STC89C52 single-chip microcomputers.Optimize and convenient examine for pwm signal Consider, from STC89C52RC single-chip microcomputers as main controller, it is that one kind has high-performance, low-voltage and carries 8K bytes Flicker it is programmable with and wipe the microprocessor of ROM.The chip is using the manufacture of ARMEL high density nonvolatile memory technology Into, and the MCS-51 instruction set and output pin of industrial standard be compatible.As the chip has 8 bit CPUs and photograph of dexterity The programmable Flash of bright device, so in the application of numerous embedded Controls, STC89C52RC single-chip microcomputers can be Which provides flexibly and effectively solution, is a MCU with specificity and optimization property.

In the present embodiment, the clock circuit is crystal oscillating circuit.Waveform needed for being produced by crystal oscillator, is carried out point Frequency is processed, and forms clock pulses, and each working portion where being then dispensed for needing for illuminator is used.The circuit and Other circuit collective effects inside the single chip computer device 100, just can produce clock frequency, the frequency and the single-chip microcomputer The speed of service be positively related, so from the point of view of the speed of service performance of a product, crystal oscillating circuit has very important Effect, the clock circuit is also that the LED light device is indispensable certainly.

In the present embodiment, the reset circuit specific works are as follows：

Electrification reset：Give the circuit to be powered, electric capacity will charge, allow electric current to reach maximum, electric capacity now Equivalent to short circuit, high level is detected, help automatically lighting device reset；When the voltage at electric capacity two ends reaches supply voltage, Capacitance discharge current is zero, and now electric capacity detects low level, normal program operation equivalent to open circuit.

Hand-reset：Electrification reset is first passed around, after pushing button, causes high level to realize resetting, now electric capacity is short Discharge on road；Just electric capacity is charged after button is unclamped, charging current is stopped by resistance, or is resetted for high level, filled After the completion of electricity, electric capacity detects low level, program normal work equivalent to open circuit.

In the present embodiment, the numeral method device 300 includes LED digitron display screens and charactron circuit, the LED Digitron display screen is mainly used to show duty cycle data at that time that have this data display, the regulation to brightness just shows Obtain intuitively more.

In the present embodiment, the operation device 400 includes four buttons, respectively opens key, close key, increases brightness key With reduction brightness key.According to the illuminator hardware case of design, selection is controlled to LED luminance using 4 buttons, is adopted Wherein four mouths of the single-chip microcomputer carry out PWM outputs, and then control the average current of the LED circuit 500, if increasing key The high-high brightness of the LED circuit 500 is added to, buzzer can be allowed to produce alarm and reminding, if equally reducing to the LED circuit 500 minimum brightness, it is also possible to report to the police, minimum brightness here is not to close.

In the present embodiment, the clock electricity is added as the controller of illuminator using STC89C52RC single-chip microcomputers Road and the reset circuit constitute a simple single chip computer device 100, and outside connects the LED circuit 500, by software Control produce PWM ripples, and then the difference by dutycycle, the output voltage of regulation power supply, so as to realize the brightness of illuminating lamp Adjust.

Described above illustrates and describes some preferred embodiments of the present utility model, but as previously mentioned, it should be understood that this Utility model is not limited to form disclosed herein, is not to be taken as the exclusion to other embodiment, and can be used for various Other combinations, modification and environment, and can be in utility model contemplated scope described herein, by above-mentioned teaching or association area Technology or knowledge be modified.And change that those skilled in the art are carried out and change are without departing from spirit of the present utility model and model Enclose, then all should be in the protection domain of this utility model claims.

Claims (6)

1. the adjustable LED light device of a kind of brightness, it is characterised in that include：Single supply electrical level transferring chip, single-chip microcomputer dress Put, numeral method device, operation device and LED circuit, the single supply electrical level transferring chip, the numeral method device, institute State operation device and the LED circuit is connected with the single chip computer device respectively.

2. a kind of adjustable LED light device of brightness as claimed in claim 1, it is characterised in that the single chip computer device bag Include single-chip microcomputer, clock circuit and reset circuit.

3. the adjustable LED light device of a kind of brightness as claimed in claim 2, it is characterised in that the single-chip microcomputer is adopted STC89C52 single-chip microcomputers.

4. the adjustable LED light device of a kind of brightness as claimed in claim 3, it is characterised in that the clock circuit is crystalline substance Shake circuit.

5. a kind of adjustable LED light device of brightness as claimed in claim 4, it is characterised in that the numeral method device Including LED digitron display screens and charactron circuit.

6. the adjustable LED light device of a kind of brightness as claimed in claim 5, it is characterised in that the operation device includes Four buttons, respectively open key, close key, increase brightness key and reduce brightness key.