public bool AddPositionsEx(List <Position> positions)
        {
            //1.删除重复的位置信息,只留最新的部分
            var positions2 = RemoveRepeatPosition(positions);

            positions.Clear();
            positions.AddRange(positions2);
            //2.处理定位引擎位置信息,添加关联人员信息
            //var tagRelation = new TagRelationBuffer(this);
            if (tagRelation == null)
            {
                tagRelation = new TagRelationBuffer();
            }
            tagRelation.SetPositionInfo(positions2);
            //3.写入数据库
            return(AddPositions(positions2));
        }