无线视频监控系统设计-毕业论文

ITianjinUniversityofTechnologyandEducation毕业论文专业：应用电子技术教育班级学号：0201-19学生姓名：杨丽指导教师：李杰副教授二○○七年六月II天津工程师范学院本科生毕业设计（论文）无线视频监控系统设计Thedesignofwirelessmonitorsystem专业班级：应教0201班学生姓名：杨丽指导教师：李杰副教授系别：电子工程系2007年6月III摘要随着社会的迅速发展，科技技术的突飞猛进，无线视频监控系统眼下名声鹊起成为炙手可热的话题。这其中除了电子通信技术与信息处理技术的发展为其构筑了技术平台之外，还有一个重要的原因就是社会需求的推动。由于无线视频监控系统的安全、方便、直观和信息内容丰富，被广泛用于各个场合。在银行室内或地下煤矿工作等场合使用无线视频监控系统，检测安全性是非常必要的。运用C8051F系列单片机和NRF905收发模块进行设计。摄像头所采集到的图像信号转换成模拟电压信号，送入到混频电路，混出射频信号，昀后放大后发送出去。射频无线接收电路接收信号并送入显示器显示图像信号。C8051F系列单片机通过SPI串口程序在数字无线发射电路中主要负责按键的控制，52系列单片机用来控制HY12864液晶进行字符串的显示和按键具体情况。数字无线接收电路实现摄像头电机方向控制。关键词：无线视频监控系统；C8051F系列单片机；NRF905发射与接收模块；HY12864液晶IVABSTRACTWiththerapiddevelopmentofsociety,scienceandtechnologyisadvancingrapidly,thereputationofawirelessmonitorsystemisbeingheldinhighvalueandisatopicofthesupremearroganceofapersonwithgreatpoweratthisstage.Besidestechnologyofelectroncommunicationandinformationdispositionisconstructingatechnologyofplatform,theimportantreasonisrequirementofsocietyisimpelled.Duetoawirelessmonitorsystemissafety、convenience、directlyperceivedthroughthesensesandabundantofcontent,weusedittoeveryoccasionwidely.Itisverynecessarytodetectsecuritywithawirelessmonitorsystemisinoccasionofbankroomorthecollieriesofundergroundetc.WemakeuseofC8051FseriessinglechipmicrocomputerandnRF905wirelessemissiveandreceivingmoduletodesign.Vidiconswitchesimagesignalsofcollecttoanalogvoltagesignals,delivertothemixer，comeoutradiofrequencysignals,blowupanddeliverintheend.Areceiverofwirelessradiofrequencyreceiveimagesignals、deliverthissignalstodisplaytoandshowthem.Indigitalemissiveelectrocircuitofwireless,C8051FseriessinglechipmicrocomputeruseSPImakeuseofprogramtotakechargekey-press,52seriessinglechipmicrocomputercontrolHY12864LCD（LiquidCrystalDisplay）todisplaycharacterstringandthecircumstancesofkey-press.Digitalreceiverofwirelesscontrolthebearingofvidiconelectricmachinery.Keywords：Awirelessmonitorsystem;C8051Fseriessinglechipmicrocomputer;NRF905wirelessEmissiveandReceivingmodule;HY12864LCDV目录1引言...................................................................................................................................12方案论证...........................................................................................................................42.1方案1——采用A/D和D/A转换的数字无线视频监控系统.............................42.2方案2——数字和模拟结合的无线视频监控系统.............................................53系统概述...........................................................................................................................74单元电路设计...................................................................................................................84.1射频发射电路........................................................................................................84.2射频接收................................................................................................................84.3数字无线发射电路................................................................................................94.3.1C8051F310单片机介绍.............................................................................94.3.2nRF905芯片介绍.....................................................................................134.3.3数字无线发射硬件电路...........................................................................174.3.4液晶显示电路...........................................................................................................194.4数字无线接收电路..............................................................................................234.5电源电路..............................................................................................................244.5.1+5V电源电压设计...................................................................................244.5.2+3.3V电源电压设计................................................................................244.5.3蓄电池........................................................................................................................255软件设计.........................................................................................................................265.1数字无线发射电路程序设计..............................................................................265.1.1发射电路程序.............................................................................................265.1.2液晶显示电路程序...................................................................................265.2数字无线接收电路程序设计..............................................................................286测试结果.........................................................................................................................30结论.................................................................................................................................31参考文献.............................................................................................................................32附录A无线发射电路........................................................................................................33附录B无线接收电路........................