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51单片机环境参数检测与显示系统设计

时间:2018-12-26 18:47来源:毕业论文
通过LM393电压比较器判断光线强弱,当光线暗时指示灯点亮,当光线强时指示灯灭,能很清楚的知道光敏传感器接收到外界光线强弱的变化

摘要:以单片机系统为基础,利用传感和控制技术,设计能够根据外界是否有人和亮度情况的变化,自动开启或关闭控制系统的智能化系统。继电器吸合和断开分别模拟开灯关灯,发光二极管为开灯指示灯,继电器后面的接线柱是可以接220V的电灯的。亮度变化是使用光敏传感器感应,用指示灯显示,通过LM393电压比较器判断光线强弱,当光线暗时指示灯点亮,当光线强时指示灯灭,能很清楚的知道光敏传感器接收到外界光线强弱的变化。采用红外热释电传感器感应人体温度,当感应到人体温度指示灯会点亮,否则指示灯熄灭。当光线变暗并且感应到有人时,继电器会吸合发光二极管亮。智能延时,当没有人了会延时10秒后自动把灯关了【继电器断开】,从而实现节能智能控制。当光线比较强时并且感应到人时,继电器是不会吸合的。当光线变暗并且连续感应到有人时,会继续延时10秒,直到没有感应到人才会延时关闭继电器模拟关灯。热传感器会感应外界温度,并用数码管显示温度。31950
毕业论文关键词:热敏,光敏,单片机,智能化
The environment parameter test and display system
Abstract:Based on the single-chip microcomputer system, using the sensing and control technology, the design can be based on the change of external temperature and light condition, automatic open or close the control system of intelligent system.Relay and off and disconnect the simulated turn on the light to turn off the lights, light emitting diode to turn on the light lamp,behind the relay terminal is can meet 220 v electric light.The leds to turn on the light light, behind the relay terminal is can meet 220 v electric light. Brightness change is the use of induction, photosensitive sensor with indicator light shows, through the LM393 voltage comparator light intensity,When the light is dark, when the indicator lamp light when the light is strong light, can clearly know the photosensitive sensor receives the outside light intensity changes.With infrared pyroelectric sensor sensing the human body temperature, when the 源自$六l维,论:文w网)加7位QQ3249^114 www.lwfree.cn
temperature of the induction to the human body will light up lights, otherwise light is put out.When the light dimmed and induction to someone, will relay and led light. Smart delay, when no one delay after 10 seconds automatically turn off the lights (relay disconnect), so as to realize energy-saving intelligent control.When the light is stronger and induction to the person, of relay is not going to suck. When the light dimmed and the continuous induction to someone, will continue to delay for 10 seconds, until there is no sense to the person would delay closed relay simulation to turn off the lights.
Keywords: human body thermal, photosensitive, single chip microcomputer, intelligent
目 录
第一章 绪论    5
 1.1研究的背景    5
 1.2  研究的意义    5
 1.3 研究内容与目标    6
1.3.1  研究内容    6
1.3.2  研究目标    6
第二章 系统总体方案设计    8
 2.1 系统总体框图    8
 2.2 方案的选择    8
2.2.1 单片机的选择    8
2.2.2 感应器的选择    9
第三章 系统硬件电路设计    11
 3.1 系统硬件概述    11
 3.2 主控模块设计    12
3.2.1 系统主控电路    12
3.2.2 单片机的引脚功能    12
3.2.3 单片机的主要特性    12
3.2.4 单片机最小系统    14
 3.3 红外热感应模块设计    15
 3.4 光敏模块设计    17 51单片机环境参数检测与显示系统设计:http://www.lwfree.cn/tongxin/20181226/28285.html
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