FIELD: objects positioning.
SUBSTANCE: invention relates to the field of positioning objects. The effect is achieved by the fact that when a radio frequency tag appears in the reader's coverage area, the tag transmits signals in the form of an identifier code to the reader located in the building at specified time intervals. The reader signal level selector compares the signal level with the first threshold value, the average between the minimum signal level from the tag at the maximum distance from the reader in the room and the maximum signal level from the tag in the adjacent room. The device for analyzing the derivative of the reader's signal levels at discrete time intervals generates the value of the increment of the signal level, and compares the positive increment with the second threshold level determined empirically so that when the user exits or enters with the label, the signal increment is greater than the second threshold level, and when the user finds indoors – the value of the signal level is less than the second threshold level. The comparison results are transmitted through the gateway to the server and terminal device for positioning visualization.
EFFECT: improving the positioning accuracy of objects.
1 cl, 4 dwg
