摘要
针对现有传统考勤手段存在的缺陷,为解决市面上指纹考勤机由于功耗大而难以适应移动便携场合的难题,本文提出一种基于指纹识别技术的便携式考勤系统方案。该方案中以32位超低功耗微处理器TM4C123GH6PMI为控制器、以兼容LTTL电平的TFS-M51为指纹模块、以低功耗液晶OLED12864为显示器。该系统具有指纹检测、体积小、功耗低等特点。测试结果表明:该系统可在2000m Ah容量电池供电情况下正常工作10小时,实现容量为800人的考勤,完全可以满足便携式考勤的需要。
In view of the existing defects of traditional attendance checking methods,in order to solve difficulty of mobile portable situations for the fingerprint attendance machine on the market caused by its large power consumption,this paper presents a portable attendentce system scheme based on fingerprint identification technology.TM4C123GH6 PMI with 32 bit ultra-low power-consumption microprocessor is taken as the controller,TFS- M51 which is compatible with LTTL level is used as the fingerprint module,low power-consumption LCD OLED12864 is applied as the display in this scheme. The system has the advantages of fingerprint detection,small volume,low powerconsumption,etc. Test results show that the system can normally work 10 hours under the battery suply with 2000 mah capacity,and realize the attendance checking of 800 people,which can completely meet the needs of portable attendance.
出处
《河南科技》
2015年第1期34-37,共4页
Henan Science and Technology
基金
电子信息与通信工程湖南省实验教学示范中心基金
怀化学院院级科研项目(HHUY2012-10)
湖南省省级大学生研究性学习和创新性实验计划项目
关键词
考勤系统
指纹识别
低功耗
便携设备
attendance system
fingerprint identification
low power-consumption
portable device
