基于单片机家用投影机电脑型控制板设计 论文.docVIP

摘 要 目前，自制家用投影机已成为电子爱好者的一个热点，也有很多爱好者及工程技术人员将其视为推广的一个产品。进口的投影机产品价格非常昂贵，稍上档次的一般均在2万元以上。而电子爱好者自制的话一般不会超过2000元，市场销售价可达3500~4000元（外型和工艺等可能赶不上时髦的进口货），利润空间还是非常大的。一些中小民营企业、学校、街道、机关在运行公务或商务活动时，均需价廉物美的投影机；而且家庭使用时，若将投影机与家庭影院系统结合，则由于其气势恢弘的大尺寸画面（可超过100寸），能产生电影院级的震撼，因此市场前景十分看好。稍高级一点的投影机，一般都有微电脑控制系统，对投影机运行中的各种状态（如温度、投影光源、遥控/手控操作）进行监控及响应。这里介绍一款简单可靠、性能优良的家用投影机电脑型控制板（以下简称电脑版）的设计制作。 关键词 热敏/光敏传感器，LED，调焦电机 Abstract At present, home-made projector has become a hot electronics enthusiasts, many enthusiasts and engineers and technicians as a product promotion. Import prices of projector is very expensive, a little on the general level of 2 million. Lovers of electronic self-made, then the general will not exceed 2,000 yuan up to 3500 the market price of 4,000 yen (form and can not keep up with technology may be fashionable imported goods), profit margins are still very large. A number of small and medium-sized private enterprises, schools, streets, public service agencies in the operation or business activities, the projector must be cheap; and family use, if the projector and home theater systems, the momentum due to its large size screen (which can be more than 100-inch), can produce cinema-level shock that the market is very optimistic about the prospects. High point slightly projectors, micro-computer control system are generally on the projector in the operation of the various state (such as temperature, light projector, remote control / manual operation) to monitor and respond to. Here about a simple and reliable, excellent performance projector for home computer-based control panel (hereinafter referred to as the computer version) of the design. Keyword thermal electric focusing，LED，light sensors 摘 要 I Abstract II 目 录 III 1 引 言 - 1 - 1.1 单片机和投影机简介 - 1 - 1.2系统功能描述 - 4 - 2系统方案及电路设计 - 6 - 2.1系统方案 - 6 - 2.2调焦电机正反转控制电路LG9110工作原理 - 7 - 2.3电路设计 - 10 - 3程序设计 - 13 - 3.1变量定义及初始化模块 - 13 - 3.2光源不正常处理子程序模块 - 18 - 3.3温度不正常处理子程序模块 - 19 - 3.4驱动焦距电机的子程序模块 - 20 - 3.5完整代码详解 - 20 - 4 调试应用及故障处置 -