Mr. jun zhang,Senior Mining Engineer, Master's Degree,Chief Technology Officer (CTO) at Changsha SmartMai Technology Co., Ltd., graduated from the Department of Mining Engineering, School of Resources and Safety Engineering, Central South University; Interests: intelligent perception; disaster warning; safety management; unmanned minin. He has published over 40 papers in various academic journals,and sever as a Committee Member of the Nonferrous Metals Society of China (NFSOC).