摘要：由于能源的浪费和不可再生的问题，活在当下的人们渐渐的认识和接受低碳生活，且越来越关注，低碳环保的口号越来越响亮。若一个电子产品能拥有能通过声音大小以及光线的大小的方式来决定是需要断开还是连通的开关的话，该产品就能很好的控制电能的消耗从而起到节省能源的作用。而且该运用在人们的日常生活区域、办公场合、学校等方面都具有很广的前景。将会在大力呼吁提倡节能减排的低碳生活中扮演不可忽视的角色。 而此毕业设计就是针对目前的的现状而设计的。设计包括：STC89C51单片机、采集声音并放大的控制电路、正负15伏和5伏的电压源、接收光信号的放大控制电路、继电器的驱动电路。该设计能根据声音的大小以及光照的强弱来引导继电器的连通和断开，然后主动切断或者连通开关。控制简单，稳定，应用范围广泛。 设计涉及到了控制系统的组成，软硬件的选择，实验原理等问题。73174

毕业论文关键词：单片机,声音控制,光控主动开关 

ABSTRACT:People nowadays gradually become conscious of low carbon life and accept it due to the waste and non-renewable problems of energy, and pay more attention to it。 The slogan of low carbon and environmental protection is shouted louder and louder。 If an electronic product can decide whether to disconnect or connect switch by sound and the the intensity of light, this product can have a good control of electrical energy consumption to realize the function of  energy saving。 What’s more, this application has a very broad prospect in people's daily life, office, school and so on。 It will play an important role in promoting a low carbon life of energy conservation and emission reduction。 And this graduation design is based on present situation, it includes: STC89C52 microcontroller, the acquisition of sound and the amplification of the control circuit, positive and negative 15 volts and 5 volts voltage source, the receiver of the optical signal amplification control circuit, relay driver circuit。 The design can guide the connection and disconnection of the relay according to the sound and the intensity of the light,  and then automatically cut off or connect the switch, which is simple, stable and can apply widely。 The design relates to the composition of the control system, the choice of hardware and software, the experimental principle and so on。

Key words: Singlechip ,microcomputer Programmable,Optical active switch

目录

1 绪论 6

1。1 课题的研究背景 6

1。2 研究目的和意义研究目的 6

1。3 国内外概况 6

1。4 本文主要内容 6

2 电路中用到的元器件 7

2。1 驻极体话筒 7

2。2 光敏电阻 7

2。3 51单片机 8

2。4 电磁继电器 11

2。5 本章小结 12

3 电路原理图的设计 12

3。1 基本组成 12

3。2 系统设计方案 12

3。3 系统模块功能简介