电脑调光的研制.doc

电脑调光器的研制（硬件组） 摘 要 在当今节能环保的新经济形势下，如何节约每一度电成为每个人、公司、政府必须要面对的现实问题。调光器是一种用来改变电光源的光通量、调节照度的照明配件,广泛应用于家庭照明、剧场舞台、酒店客房、场馆展厅等场合。从原理上讲,所有调光器都是通过改变电光源的输入电流来获得不同强度的光输出。其控制方法包括改变加在负载上的电压幅值和改变电流流经负载的时间两种方式,前者直接改变了电流有效值,而后者是在交流电的半波内控制电流导通的时间及次数来实现的。 进入21世纪，嵌入式技术全面发展，目前已成为通信和消费类产品的共同发展方向。从航天科技产品到民用产品，嵌入式产品的身影无处不在。在诸多的操作系统中，嵌入式以其稳定、安全等强大的优点必将成为工业控制、信息家电、机器人、电力及远程监测等领域的发展局势。 本文介绍的电脑调光器以嵌入式操作平台为核心，采用SAMSUNG公司的S3C2410A芯片，结合外围芯片接口构成嵌入式计算机硬件平台，通过RS232、RS485通讯方式，发送可视ASCII指令即可同时控制多路日光灯（或荧光灯）的亮度，能大大节约电能的消耗，很快就可收回设备投资，具有很高的经济和社会效益。通过地址扩展技术，本控制器可多个级联使用，可以控制更多路日光灯的亮度。本电脑日光灯荧光灯亮度节能调光控制器可定制支持局域网络（以太网）通过TCP/IP技术进行控制。广泛应用于智能楼宇、智能小区、宾馆、会议中心的灯光照明控制。 关键词：调光器，嵌入式系统，CAN总线 Development of Computer Dimmer（Hardware Group） Abstract In todays energy-saving environmental protection, the new economic situation, how to save each unit of electricity to many individuals, corporations, governments need to face reality. Dimmer light source is used to change the flux, adjusting the illumination of the lighting accessories, are widely used in home lighting, stage, theater, hotel rooms, exhibition venues and other occasions. In principle, all the dimmer light source through changing the input current to obtain different intensities of light output. The control method includes changing the voltage across the load increases the magnitude and the time to change the current flowing through the load in two ways, the former directly change the current effective value, which is half-wave AC control current conduction within the time and frequency to achieve. In the 21st century, the comprehensive development of embedded technology, has become the communications and consumer products common development. From aerospace technology products to civilian products, embedded products, the figure is everywhere. In many operating systems, embedded in its stability, security and other advantages will become powerful industrial control, information appliances, robots, power and remote monitoring developments in the field situation. This