【作者】 尚维伟；

【导师】 胡涛；

【作者基本信息】 西安理工大学 ， 信号与信息处理， 2008， 硕士

【摘要】 目前车载驾驶人疲劳监测装置大都是以简单的计时方式为准则,只要发动机连续工作3～4个小时,就强制发动机停止工作半个小时。比较典型的装置就是汽车行驶记录仪,除了疲劳监测,还对车辆的转向灯、倒灯、车门、点火、远光灯、近光灯、刹车、鸣号、速度等动作进行实时记录,相当于一个“黑匣子”,通过专门的装置,可以将数据打印出来。为一些故障诊断和交通事故分析提供较为科学可靠的证据。此方式能够全面实时地记录车辆的行驶状态数据,但是仅以发动机的工作时间作为驾驶人疲劳的判定准则过于片面:而且只是一个记录装置,信息交互性不足;数据导出必须依赖专门的装置,在一定程度上限制了其应用的范围。针对以上的不足,本文提出这样的方案:利用目前日益成熟人脸状态识别技术构建驾驶人智能监测系统,对驾驶人的疲劳状况进行实时、准确、高效地监测。当监测到驾驶人处于疲劳状态时,在车内进行语音预警,并利用GPRS无线通信网络将智能监测系统所获得驾驶人的疲劳信息和车辆的位置信息及时传送给上位机(监控中心),使得交管部门能及时采取措施,以避免一些交通事故的发生。同时,将车辆的实时位置信息和驾驶人的疲劳信息以TXT格式存储于车载端U盘结构存储器。文中较为详细地介绍了GPRS以及组网方案的选择,GPS定位原理,并且给出了GPRS终端单元、GPS接收机、语音模块、无线云台控制以及数据存贮模块的硬件电路设计和软件设计,同时也给出了基于双51单片机和SP3539的车载移动终端系统主控电路设计和车载终端的总体工作流程,最后给出了整个系统的测试结果。更多还原

【Abstract】 Nowadays most of drowsy drive monitor equipment was based on the rule of timing, if the engine runs 3～4 hours, it has to stop for half an hour rest. The typical equipment is the vehicle running record, besides drowsy monitor, it records ignition whistle speed bendbrake and so on, just like a "black_casket". With a special printer, we can get the record data which can provide scientific evidence for fault diagnosis and accident analyze. In this method, it’s unilateral for drowsy monitor basing on the rule of timing;As a record equipment, it’s lack of interactive; Special printer requirement for data export becomes limitation for use.According to the flaw, we design this intelligent system:drowsy drive monitor was based on technique of facial feature recognition. When the driver was drowsy driving, voice alert was given at first inside of vehicle, then send the information of vehicle’s position to monitor center by SMS relying on GPRS network; In this way, administration of traffic can take some necessary measure in advance which can prevent some accident. At the same time, record the information of vehicle’s position and drowsy driving on the U-disk with the format of TXT.In this paper, we first introduced the GPRS and selection of its terminal solution and principle of positioning of GPS in detail;Then, we present the hardware design and the software design of GPRS terminal、GPS receiver、voice module、wireless transmission module and data record module;Next, the main control circuit and software-module flow charts of vehicle carried terminal was described; At last, we discussed the test result of the whole system.更多还原