Based On Wireless Dedicated Handheld Terminal Design

Recently,the inefficient,unmanageable and easily pretended traditional teaching management in classroom can't match requirements of new trend teaching management anymore.With rapid progress of embedded processing technologies and widespread popularity of intelligent terminals,it is necessary to develop a dedicated campus intelligent handset to make the teaching management much more standardized,systematic and scientific.In the research,an intelligent terminal system with multiple functions is designed,which combined by fingerprint identification module,wireless communication module,LCD touch screen module,embedded system and etc.The intelligent terminal system realizes classroom attendance and online in-class test at last.There are three steps to accomplish the research in this paper.Firstly,according to actual demands and main functions in the general planning of the terminal system above,all hardware used in the system are selected.Meanwhile,hardware schematic diagrams are designed and PCB boards are drawn.Secondly,the slave computer program of hand-held terminals is emphatically described.The process of each sub-service is also analyzed.On the basis of pattern of every module,slave computer drivers are designed and the FreeRTOS is transplanted.Then,the communication protocol between the main computer and wireless hand-held terminals is determined.Finally,having been several debugged and constantly consummated,the system performs functions such as fingerprint attendance,class test data collection and wireless data transmission to the main computer.It performs satisfactorily.So,this research provides important significance and reference for campus service system improvement and teaching quality enhancement.