摘要最近这些年来，伴着考勤系统的成长，越来越多的企业越发关注考勤设施自身的探索，尤其注重比如能够辨别每个人的指纹或掌纹、人脸、瞳孔、虹膜等的各类识别技术。形形色色的考勤机、指纹识别设施等终端产物被生产出来，大多数企业为了增进考勤效果都会置备一款使用。企业从不思量考勤方式是不是方便、考勤效率是不是能够提高，而是将关注点放在考勤结果。86791

本课题针对这一现象，开展了有关技术的思考与摸索，利用一种基于无线网络接收信号的考勤方法，经由分析移动节点状况以及各个接入点接收到的实时信号状况来进行考勤判断。此系统能够准确地做出考勤判断，并使考勤对象免于主动参与，提高了考勤系统的自动化和灵动性。这是一种经由WiFi网络进行考勤的有效方法。

本设计是一种基于WiFi注册信息的考勤系统，它使得考勤对象免于传统考勤方法的烦琐，提高了考勤的自动化水平。该系统包括无线考勤终端（形同无线路由器设施）和考勤终端（如手机终端）。无线考勤终端不停抓取网络数据报文，所以只要打开了WiFi的手机进入其监视范围内就会自动进行考勤，而无论手机终端是否连接了此WiFi。无线考勤终端提取出捕获的手机报文MAC地址信息，与注册的考勤信息表相匹配从而实现整个考勤活动。整个考勤活动体现透明化和自动化，大大简化了考勤烦琐的过程。

毕业论文关键词：WiFi；树莓派；网络抓包；考勤系统

Abstract In recent years, accompanied by growing attendance system, more and more companies are becoming more aware of their own facilities and attendance of exploration, with particular focus such as the ability to identify each person's fingerprints or palm prints, face, pupil, iris and other types of identification technology。 The end product of all kinds of attendance, fingerprint identification, etc。 are produced, the majority of enterprises in order to enhance the effect of attendance will be a provision to use。 Enterprise never consider attendance way if easy or not, it is possible to improve the efficiency of attendance, but just focus on the results。

The topic for this phenomenon, to carry out technical thinking and exploration, we using a method based on attendance wireless network receiving a signal, received via the mobile node status and analysis of the various access points in real-time signal condition to determine attendance。 This system is able to make accurate judgments in attendance, time and attendance and active participation from the object to improve the automation of time and attendance and Smart Systems。 This is an effective method of attendance will be via a WiFi network。

The design of the attendance system is based on WiFi registration information, which allows objects from cumbersome traditional attendance method to improve the attendance level of automation。 The system includes a wireless attendance terminal (just like wireless routers facilities) and attendance terminals (such as mobile terminals)。 Attendance wireless terminal constantly crawl the network data packets, so just open the WiFi phone will automatically enter their attendance within the monitoring range, regardless of whether the mobile terminal is connected to the WiFi。 Attendance wireless terminal to extract the captured packets phone MAC address information, attendance and registration information match appearances in order to achieve overall attendance activities。 Attendance entire activity reflects transparency and automation, greatly simplifying the cumbersome process attendance。

Keywords: WiFi; Raspberry Pi; Packet Sniffer; Attendance System

目  录

第一章　绪　论 1

1。1　课题研究背景