| Every child’s birth gives a new meaning to the family,which is the future pillar of the country.But children are also vulnerable.Although China has established relatively perfect laws and regulations on the safety of children,there are still a large number of children trafficked and lost every year.On the one hand,because the children’s physical and mental development is not mature,the understanding of society is more mature,the phenomenon of illegal criminals abducting and selling children frequently occurs.On the other hand,because of children’s natural active character and parents carelessness is not capable,supervision,so there are some children lost more or less,and this kind of phenomenon provides abducted opportunities for criminals.Lost children make a family not only can’t together,more important is to bring great damage to children’s physical and mental health development,were also more likely to the society in the future,and the nation’s development bring serious negative impact.Therefore,when children aleaves supervision of the guardian.an effective child safety guarantee mechanism is particularly important.And this security mechanism must be able to protect children from their guardian when they are away from their guardians.Based on this,a Android based child positioning and tracking system is considered to meet the needs of parents to focus on children’s trends.This paper introduces the requirements analysis,totality design,explicit design,database design system implementation and testing of location tracking children system.After a detailed analysis and research on location tracking children system,this paper use case specification description table to describe the functional requirements of location tracking children system,At the same time,it describes the requirements of operating environment of the system,the relevant standards and other non-functional requirements of the system.On the location tracking children system overall design and detailed design stage,through the system module diagram and timing diagram of each functional module and class diagram for the location tracking system function and module to display;In the database stage,the function modules of location tracking children system are stored in a reasonable way,and corresponding databases and E-R diagrams are established for data analysis.In the implementation and testing phase of the location tracking children system,mainly introduces the realization of the system interface display and corresponding code,and the system of the main module to experiment and test,so as to ensure the availability of location tracking children system.The system contains client,client server and database.The parent client module mainly realizes themselves and their children’s position and real time tracking,bus query,route query,information navigation,weather modification preservation,short message validation,search and add nearby people and so on;The child client module mainly realizes login,upload location,modify information and other functions;The client server module mainly realizes the parent and children login authentication,connection database,message processing,return data and other functions;The database module mainly implements the information storage of parents,children and friends.This system is based onAndroid,apply-ing Eclipse and MyEclipse as a system development tool.This paper uses three layers of C/S to design the system architecture;uses servlets to handle,respond and deliver client requests;uses baidu map API to displaying map and position;uses SecurityCodeSDK to register message validation;uses sina weather API interface to realize weather query.The location tracking system enables parents to know where their children are at any time,whether they are beyond the safe range,and can effectively avoid the child’s loss. |
