Patent ID: 8682347
Filing Date: 2014-03-25
Classification: F21V,G01S,H04W

Abstract:
1. A combination of an active positioning system for locating at least one position of at least one mobile device by utilizing radio frequency technology and the at least one mobile device, the active positioning system comprising: at least one stationary base station, wherein the at least one stationary base station includes an active positioning system antenna, the active positioning system antenna having an electronics unit including at least one transceiver, wherein the active positioning system antenna comprises: wherein the at least one mobile device is at least one TAG, which is fixed to a user or an object directly or indirectly, the active positioning system further including at least one external antenna connected to the electronics unit, the at least two directional antennas and the at least one external antenna monitoring different sections of at least one monitored area and transmitting additional information signals comprising antenna specific limit and control values to the at least one TAG in addition to transmitting information signals comprising the at least position information, the active positioning system antenna comprising: said at least one TAG comprising: the at least one antenna of said at least one TAG transmitting at least one of the formed measurement signals and information signals to the active positioning system, said at least one base station receiving said at least one transmitted signal of the formed measurement signals and information signals, the active positioning system further comprising: wherein the active positioning system is at least arranged to measure RSSI (Received Signal Strength Information) values from the at least one transmitted signal of the formed measurement signals and information signals received by the at least two directional antennas and by the at least one external antenna of one of said at least one base station to determine a highest measured value of RSSI from the at least two directional antennas and from the at least one external antenna, which is located in a most preferred direction from one of the at least one TAG, and respectively lower measured values from at least one antenna of the at least two directional antennas and from at least one antenna of the at least one external antenna other than an antenna having the highest measured value of RSSI as a function of angle deviation from the most preferred direction.