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Programmed LED light source controller

A technology of LED light source and controller, which is applied in the field of programmable LED light source controller, can solve the problems of reduced lifespan, single function, and large heat generation, and achieve good heat dissipation performance, good image contrast, and good control effect

Inactive Publication Date: 2016-05-04
SHAANXI SHENGMAI PETROLEUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the driver module is not suitable, it may lead to problems such as insufficient illumination, high heat generation, and shortened lifespan
In addition, the light source adjustment controller purchased on the market generally has a single function, and the price of the powerful function is very high, and it is not easy to integrate into the device, so it is not suitable for more sophisticated experiments.

Method used

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  • Programmed LED light source controller

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Embodiment Construction

[0014] A program-controlled LED light source controller, which is composed of a connected drive module and a control module, and a host computer; wherein, the drive module uses a power Darlington tube TIP125 as a drive, a resistor is connected in series with the gate, and the collector is connected to the power supply voltage. The emitter is connected in series with the LED light source, and a Schottky diode is connected in parallel at the LED light source; among them, TIP125 is a PNP transistor with a maximum collector-base voltage of 60V; a maximum collector-emitter voltage of 60V; a maximum base current of 0.1 A; The maximum emitter current is 5A, and the emitter peak current is 8A, which can almost meet the requirements of all current high-power LED drivers. The LED in the figure can be one LED or multiple LEDs connected in series. Schottky diodes play the role of freewheeling. In order to ensure the stability of the illumination of the light source to meet the image acqu...

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PUM

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Abstract

The invention relates to a light source controller, and specifically relates to a programmed LED light source controller. The programmed LED light source controller is formed by a driving module and a control module connected with each other and a host computer, wherein the driving module employs a power Darlington transistor as the drive, a grid electrode is connected with a resistor in series, a collector electrode is connected with the power supply voltage, an emitter electrode is connected with an LED light source in series, a Schottky diode is connected to the LED light source in parallel, and the control module employs a 51-kernel single-chip microcomputer and communicates with the host computer via a serial port. According to the programmed LED light source controller, the heat radiation performance is good, the illumination surface is uniform and prevents jittering, the image contrast is good, the machine visual requirement of equipment is satisfied, the cost is low, the integration is facilitated, and a professional LED driving chip is employed so that better control effect can be obtained.

Description

technical field [0001] The invention relates to a light source controller. Specifically relates to a programmable LED light source controller. Background technique [0002] Machine vision is an important part of semiconductor equipment, and one of the important components of vision is the light source. High-power LEDs have the advantages of long life, stable illuminance, and high brightness, so most visual light sources use LEDs, but higher requirements are placed on the driver module. If the driver module is not suitable, it may lead to problems such as insufficient illumination, high heat generation, and shortened lifespan. In addition, the light source adjustment controllers purchased on the market generally have a single function, and the price of the powerful function is very high, and it is not easy to integrate into the device, so it is not suitable for more sophisticated experiments. Contents of the invention [0003] The invention aims to provide a programmable...

Claims

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Application Information

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IPC IPC(8): H05B37/02
Inventor 王耀斌
Owner SHAANXI SHENGMAI PETROLEUM
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