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在社会上有很多关于自动启闭窗帘的控制器与实体,也有不少关于自动启闭窗帘的实体出现在市场。本文重点介绍用AVR(ATMEGA8)实现的自动起闭窗帘控制器。通过与网上的设计进行比较来说明本人设计的起闭窗帘的优越性。从而来与大家分享我的成果,进一步通过所学来与大家共同切磋在专业方面的知识。 关键词:ATMEGA8V、设计、自动启闭窗帘控制器、编程、定时器、
in the society many about opens automatically shuts window blind's controller and the entity, also has many about automatically opens shuts window blind's entity to appear in the market. This article introduced with emphasis (ATMEGA8) realizes with AVR is automatic shuts the window blind controller. Through carries on the comparison with on-line design to explain that myself design shut window blind's superiority. Thus comes with everybody to share my achievement, further through studies comes to compare notes together with everybody in the specialized aspect knowledge.
key word: ATMEGA8V, the design, open automatically shut the window blind controller, the programming, the timer
该控制器能自动识别房间的亮度,使窗帘的开、闭控制在自然光的最佳亮、暗范围内。 图1中,光敏电阻RD和时基电路5G1555组成亮度识别部分。光敏电阻RD接收自然光后,其阻值发生变化,设定为RD1,这时RD1<RD。此时5G1555的第⑥脚电位高于2/3Vcc=2/3x6.5≈4.3V。②脚输出一低电位,BG2、BG3导通,J2吸合。此时图2中的J2-1、J2-2触头闭合,电机设定正转,带动涡轮、涡杆,使窗帘打开。待窗帘全打开时,碰断图2中的限位开关,使b、a断开,电机停转。
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