| 数字化LED光源控制器设计 |
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| 引用本文： | 谢鹏程.数字化LED光源控制器设计[J].科学技术与工程,2012,12(3):560-563. |
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| 作者姓名： | 谢鹏程 |
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| 作者单位： | 华南理工大学机械与汽车工程学院,广州5 10640 |
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| 基金项目： | 国家863计划项且，国家科技支撑计划基金项目，中央高校基本科研项目 |
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| 摘 要： | 为了提高机器视觉中照明系统的质量,获得优质稳定的图像,设计了一种基于USB通信协议的LED光源控制器.该控制器采用基于ARM Cortex - M3内核的STM32F107作为微控制器,应用PWM调光技术以避免模拟调光中的色偏现象,并实现了普通、频闪、外部触发三种照明模式.在机器视觉检测系统的应用表明该控制器不但能够降低成本,而且能够实现PWM数字化精确调光,改善所提取图像质量.
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| 关 键 词： | STM32 USB2.0协议 光源控制器 机器视觉 PWM调光 |
| 收稿时间： | 2011/10/10 0:00:00 |
| 修稿时间： | 2011/10/31 0:00:00 |
Design of the Digital LED Lighting Controller |
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| Xie PengCheng.Design of the Digital LED Lighting Controller[J].Science Technology and Engineering,2012,12(3):560-563. |
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| Authors: | Xie PengCheng |
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| Institution: | (Dept.of Mechanical & Automotive Engineering,South China University of Technology,Guangzhou 510640,P.R.China) |
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| Abstract: | In order to improve the quality of lighting system in Machine Vision and obtain stable image, the LED lighting controller based on USB protocol has been designed. The lighting controller uses the STM32F107 as microcontroller which is based on ARM Cortex-M3 core. PWM Dimming technology is applied in order to avoid the phenomenon of color cast in analog dimming. Three lighting modes have been designed, including Normal mode, Strobe mode and Trigger mode. The application in Machine Vision shows that it could not only reduces the cost but also dims accurately and improves the quality of the image. |
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| Keywords: | STM32 USB2 0 protocol Lighting Controller Machine Vision PWM Dimming |
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