发明申请
WO2017069966A2 SYSTEM FOR, AND METHOD OF, ACCURATELY AND RAPIDLY DETERMINING, IN REAL-TIME, TRUE BEARINGS OF RADIO FREQUENCY IDENTIFICATION (RFID) TAGS ASSOCIATED WITH ITEMS IN A CONTROLLED AREA
审中-公开
基本信息:
- 专利标题： SYSTEM FOR, AND METHOD OF, ACCURATELY AND RAPIDLY DETERMINING, IN REAL-TIME, TRUE BEARINGS OF RADIO FREQUENCY IDENTIFICATION (RFID) TAGS ASSOCIATED WITH ITEMS IN A CONTROLLED AREA
- 专利标题（中）：系统和方法，实时准确快速地确定与控制区域中的物品有关的射频识别（RFID）标签的真实轴承
- 申请号：PCT/US2016/056333 申请日：2016-10-11
- 公开(公告)号：WO2017069966A2 公开(公告)日：2017-04-27
- 发明人： KOCH, Michael J. , SWOPE, Charles B. , BEKRITSKY, Benjamin J.
- 申请人： SYMBOL TECHNOLOGIES, LLC
- 申请人地址： 3 Overlook Point Lincolnshire, Illinois 60069 US
- 专利权人： SYMBOL TECHNOLOGIES, LLC
- 当前专利权人： SYMBOL TECHNOLOGIES, LLC
- 当前专利权人地址： 3 Overlook Point Lincolnshire, Illinois 60069 US
- 代理机构： FAN, Nong-qiang
- 优先权： US14/886,604 20151019
摘要：
A radio frequency identification (RFID) tag reading system and method accurately and rapidly determine, in real-time, true bearings of RFID tags associated with items in a controlled area. Primary transmit and receive beams are steered over the area, and multiple secondary receive beams are substantially simultaneously steered to a plurality of bearings in the area. The highest signal strength of secondary receive signals from the secondary receive beams determines an approximate tag bearing of each tag. Two secondary receive beams at opposite sides of the approximate tag bearing in elevation are selected to obtain a pair of elevation offset signals, and two secondary receive beams at opposite sides of the approximate tag bearing in azimuth are selected to obtain a pair of azimuth offset signals. The elevation offset signals and the azimuth offset signals are processed to determine a true bearing for each tag in real-time.
摘要（中）：
射频识别（RFID）标签读取系统和方法准确且快速地实时确定与受控区域中的物品相关联的RFID标签的真实方位。 初级发射和接收波束在该区域上转向，并且多个次级接收波束基本上同时转向该区域中的多个轴承。 来自次级接收波束的次级接收信号的最高信号强度确定每个标签的近似标签方位。 在标高的近似标签的相对两侧选择两个辅助接收波束以获得一对仰角偏移信号，并且选择在方位角的近似标签的相对侧处的两个辅助接收波束以获得一对方位偏移信号 。 处理高程偏移信号和方位偏移信号以实时确定每个标签的真实方位。