CN202551439U

CN202551439U - LED (Light Emitting Diode) light source output control system

Info

Publication number: CN202551439U
Application number: CN2012201241124U
Authority: CN
Inventors: 段巧; 符光辉; 符键
Original assignee: XIANGTAN YIGUANG PHOTOELECTRIC TECHNOLOGY CO LTD
Current assignee: XIANGTAN YIGUANG PHOTOELECTRIC TECHNOLOGY CO LTD
Priority date: 2012-03-29
Filing date: 2012-03-29
Publication date: 2012-11-21
Anticipated expiration: 2022-03-29

Abstract

The utility model discloses an LED (Light Emitting Diode) light source output control system which comprises a controller, an A/D (Analog to Digital) converter, an LED array, a sensor array, an LED drive device, a micro control panel, an LCD (Liquid Crystal Display) screen, a voice module and an indicator lamp, wherein the controller is respectively connected with the A/D (Analog to Digital) converter, the sensor array, the LED drive device, the micro control panel, the LCD screen, the voice module and the indicator lamp; the sensor array is respectively connected with the LED array and the A/D converter; the LED drive device is connected with the LED array; and the output end of the voice module is connected with a horn. The LED light source output control system has the beneficial effects that the work of the LED light source array is effectively controlled, the light source output control function is realized, and the work is reliable and stable.

Description

A kind of led light source output control system

Technical field

The utility model relates to a kind of control system, relates in particular to a kind of led light source output control system.

Background technology

Light-emitting diode (LED; Light Emitting Diode) is a kind of light emitting semiconductor device that can electric energy be converted into visible light; The principle of luminosity of LED passes through compound semiconductor with electric current exactly; Through combining of electronics and hole, superfluous energy will disengage with the form of light, reach luminous effect.It is high that led light source has wide (2) colour balance good (3) efficiency of light energy utilization of (l) colour gamut; Series of advantages such as the response time is fast, luminous efficiency is high, volume is little; Become the environment-friendly and green energy of greatly developing and promoting in the world, obtained development fast and used widely.In many lighting fields such as traffic signals, advertisement and identifier, emergency lighting, LCD back lighting, automobile lighting system, commercial illumination and city nighttime landscape illuminating engineering, obtained using widely at present.Along with science and technology development has proposed more requirement to the application technology of led light source; In some occasions that need control led light source; Prior art can not well realize the output control of light source and response process timely; Intellectuality realizes that led light source output is controlled at much and need has the occasion of control requirement more and more important to light source output, such as, the output of control led light source can be used as a sub-systems of projecting apparatus and uses; At some large-scale stage and special occasions, need carry out effective Based Intelligent Control etc. to the led light source system.

Summary of the invention

In order to solve the problems of the technologies described above, the utility model provides a kind of simple in structure, led light source control system that control is effective.

The technical scheme that this practical utility model solves the problems of the technologies described above is: comprise controller, A/D converter, led array, sensor array, LED drive unit, microcontroller dish, LCD screen, voice module and indicator light; Said controller links to each other with A/D converter, sensor array, LED drive unit, microcontroller dish, LCD screen, voice module and indicator light respectively; Sensor array links to each other with led array, A/D converter respectively; The LED drive unit links to each other with led array, and the output of voice module connects loudspeaker.

In above-mentioned a kind of led light source output control system, said controller is made up of MCU processor and FPGA module.

In the utility model; The MCU processor is as control assembly; FPGA precisely carries out processing unit as height, realizes the accurate control box of led light source output is handled, and led array comprises different RGBLED arrays; Each array group has the corresponding driving module corresponding with it in drive unit, controls and drives.Be provided with corresponding sensor module in each led array, constitute sensor array,, be the basis, realize control led light source with this parameter to detect the relevant state parameter of led light source work.The relevant state parameter of led light source system works shows through LCD in real time, and the voice suggestion of voice module and indicating lamp module are accomplished the execute the task relevant prompting and the guidance of work to system.

The technique effect of the utility model is:

1. the utility model adopts MCU and FPGA as controller; Reduced the cost of whole development control, carried out the control fill order that single-chip microcomputer is sent, effectively controlled the work of led light source array through the high stability advantage of FPGA; Realize the light source output control function, reliable and stable work.

2. the utility model adopts high-precision a/d converter to be used for the output sampling of sensor array, can realize the accurate monitoring to the led light source parameter, improves the control precision of the utility model.

3. through for control panel and LCD screen and indicator light and voice module, Control work is more easily carried out, improve light source control operating personnel's operating efficiency.

Description of drawings

Fig. 1 is the structured flowchart of the utility model.

Fig. 2 is the structured flowchart of drive unit in the utility model.

Fig. 3 is the control flow chart of the utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

Referring to Fig. 1, the utility model comprises controller, led array, sensor array, LED drive unit, microcontroller dish, LCD screen, voice module and indicating lamp module.Controller adopts MCU and FPGA combination, and the input I/O end of MCU is connected with the output of high-precision A/D module, and MCU output I/O end is connected with said FPGA, and FPGA is connected with the LED drive unit, and said drive unit inserts the control signal from FPGA. Microcontroller MCU judges given key-press status through the control model key-press status value that said microcontroller dish needs, and calls given mode of operation program parameter, and system is revised has related parameter, the work of control led light source.Whole work disposal module relates to Digital Logic and handles and analog circuit; Digital Logic partly cooperates the driving sequential of the LED that produces via FPGA; The generation order of relevant driving sequential provides via affiliated MCU; The switching pulse of LED is used to control fluorescent lifetime and the luminous intensity of LED; Said analog circuit is used to provide drive current to realize the driven to R, G, B array group LED, and combined sensor array and MCU are to its monitoring work, and shutdown system was perhaps recovered driven when situations such as assurance led light source system is too high in appearance temperature, colour gamut changes greatly, electric current and voltage instability were.Affiliated microcontroller dish can be realized to relevant luminous intensity controlled function such as colourity luminous intensity distribution adjusting.

Referring to Fig. 2, Fig. 2 is a structured flowchart of drive unit.In the present embodiment, corresponding LED array group is for different LED; Can control and give the Different control signal and control; Said control signal is to provide according to the monitoring feedback of sensor array to led drive circuit and LED actual working state (colourity, brightness etc.), and control signal is made up of two parts, and a part is program control IRFR9020 module; The voltage signal of its output control LED; The output of said voltage signal is under the program control pwm signal that controller produces, to work, and a part is the sequential logic control signal of FPGA control output, and they control the output services state of led light source jointly; Based on the high-speed real-time handling property of FPGA and the controlled function of MCU, can be to satisfy led light source light output control requirement such as light modulation, luminous intensity distribution, toning etc.Core controller can provide different circuit to control the working condition of LED in different sections according to monitor state and actual external interrupt operation etc.A series of modules and the device isolating amplifier circuit etc. of decoupling have as shown in Figure 2 been taked in the circuit; Be actual monitored sensor array group; The work of led array; The accuracy of pilot signal etc. realize controllability, reliability and the accuracy that guarantees monitoring, and the A/D that is adopted simultaneously is 16 high accuracy conversion chips.

Referring to Fig. 3, Fig. 3 is the workflow diagram of the utility model.It is based on such work that is provided with:

1) power on, the MCU system initialization, the I/O initialization, the FPGA initialization starts drive unit system and works in pattern one, the led array light source igniting, LCD shows the led light source work state information, and speech prompting system is just in operate as normal, and relevant indicator light is bright.

2) monitor led light source light output variable information in real time, monitoring colourity, temperature, electric current, voltage is monitored and is control panel input information scanning mode, this pattern relevant parameter of initialization.

3) application program is provided with response priority to the monitoring response, the order of preferential answering relevant controlling.Said response control execution work is under the SECO of FPGA, to work.

In sum, the led light source control system of the utility model and the scheme of control circuit thereof have provided the multiple selection that is adjusted to control panel work; Control system combine the led light source technology development and use; Proposed the intellectualized LED light-source control system of utility model, applied environment is wide, and cost is low; System works is stable, and control precision is high.

Claims

1. led light source output control system; It is characterized in that: comprise controller, A/D converter, led array, sensor array, LED drive unit, microcontroller dish, LCD screen, voice module and indicator light; Said controller links to each other with A/D converter, sensor array, LED drive unit, microcontroller dish, LCD screen, voice module and indicator light respectively; Sensor array links to each other with led array, A/D converter respectively; The LED drive unit links to each other with led array, and the output of voice module connects loudspeaker.

2. a kind of led light source output control system according to claim 1 is characterized in that: said controller is made up of MCU processor and FPGA module.