对GPS协议进行解析，协议采用nema，解析经纬度，时间等信息-The GPS protocol analysis, protocol uses nema, parsing latitude and longitude, time and other information

实现多线程服务器，实现GPS定位点坐标和工作状态解析、存储、以及安全距离判断、实时发送报警信息、数据库使用mysql。-Multi-threaded server, realize GPS positioning coordinates and work state analysis, storage, and security the judge, send real-time alarm information, mysql.