Abstract:Maozhuang mine of Shandong Hengda Coal Mining Limited Corporation has been mined for more than 30 years, and multiple levels of entries were formed. For people work in different level of entries, accurate personnel positioning is the key to gurantee their safety and management. By adopting a new high perceivable wireless communications system, which could meet the AQ6210-2007 standard, Maozhuang mine was able to realize accurate personnel tracking and attendance management.