| Teaching information equipment in Colleges and universities is the infrastructure of teaching and scientific research,the normal operation of teaching equipment is a prerequisite for ensuring the orderly and steady development of teaching and scientific research.Especially in recent years,colleges and universities continue to strengthen the construction of teaching information,the number of teaching equipment is growing rapidly.Inevitably,the teaching equipment will be a variety of failures during use.In order to strengthen the management of teaching equipment,quickly solve unexpected problems and create a timely and effective repair channels for the majority of teachers and students.It is of great practical significance to develop a teaching equipment service system for teachers and students.This paper designs and implements a set of teaching equipment service system based on Android mobile terminal.At the same time,the current Android phone can not complete the work of indoor positioning.So the Wifi positioning algorithm based on Received Signal Strength Indication can be used to achieve the indoor positioning.According to the idea of software engineering,system analysis,design and Implementation.The work of this paper is divided into the following three parts:(1)This paper discusses the development background of teaching equipment service system on the basis of field investigation of campus teaching.On basis of reading lots of literature and browsing the site equipment service system of some colleges and universities,this paper makes a preliminary study on the present situation of teaching equipment service system.According to the results of market research,this paper choose the development platform of teaching equipment service system.(2)This paper studies the technology of indoor positioning and the Wifi indoor positioning algorithm.At present,there are four kinds of commonly used LAN indoor positioning technology.namely,ultra-wideband indoor positioning technology,Zigbee indoor positioning technology,ultrasonic indoor positioning technology,indoor positioning technology based on Wifi.As the development platform is the Android platform,so the indoor positioning technology based on Wifi is chosen to carry out indoor positioning research,and the Wifi localization algorithm based on the signal strength feature matching is selected to realize the indoor positioning.(3)This paper introduces the design and implementation procedure of the teaching equipment service system based on location information.First,the article carries on the demand analysis to the system and uses the use case analysis in software engineering to describe the requirement of teaching equipment service system.Use Case Analysis is a bridge betweensystem design and system requirements.Secondly,the paper carries on the overall design and the detailed design of the system,mainly uses the architecture diagram and the system function flow chart to explain the system design.Then designed the database structure,the database E-R diagram is designed reasonably with the third normal form;Finally,the paper uses system interface screenshots to show the various functions of the system.At the same time,it is a brief introduction to the codes of some core functions.Display the functional effects of the system,and some of the functions of the core code to carry out a brief introduction to the system to test,and ultimately complete the entire teaching equipment service system development work.Finally,the teaching equipment service system includes three parts: the user,the maintenance personnel and the administrator.Basically the system meet the needs of teaching equipment services.The system provides a convenient and efficient equipment maintenance mode for the user,can be real-time monitoring of progress The administrator from the mobile phone or PC terminal login teaching equipment service system,and then can view all the problems and data analysis statistics,greatly improve the efficiency of the work.The whole system is simple and convenient to operate,and the function is perfect. |
