RFID technology-based displacement sensing positioning system and positioning method thereof

Abstract

The invention discloses an RFID (Radio Frequency Identification Device) technology-based displacement sensing positioning system and a positioning method thereof. The system comprises a plurality of positioning communication units, wherein each positioning communication unit is composed of two base stations and a certain length of leakage cable with two ends connected with the two base stations; the base stations on the two ends of the leakage cable send signals with time marks to a mobile station, and the mobile station in any position between the two base stations monitors and receives the signals sent by the two base stations, and the accurate position of the mobile station between the two base stations can be analyzed and calculated out according to the signal sending time of the two base stations and the signal arrival time, as well as the known speed and distance of the signal sending between the mobile station and the two base stations through the leakage cable, thereby completing the displacement sensing positioning communication. According to the invention, the displacement sensing positioning communication of the mobile station in a laneway is realized, and the installation and debugging of positioning card readers, substations and the like which are used in a traditional positioning communications system are avoided, thereby simplifying the system, reducing installation workload and maintenance workload in a later period, and improving the stability and performance of the system. Therefore, whole-journey continuous accurate positioning communication is realized in the system coverage.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a roadway positioning communication system and a positioning method based on leaky cable radio frequency transmission technology. Background technique [0002] At present, most of the traditional roadway positioning communication system technology adopts arranging several positioning points on the positioning line, and installing positioning communication radio frequency card readers at each positioning point. Each positioning communication card reader has a different identification code, and Communicate with its nearby mobile stations. When the mobile station moves to the vicinity of the card reader at the positioning point, the identity and location information of the mobile station are determined according to the mutual identification between the card reader and the mobile station, and the positioning communication of the mobile station is realized. This traditional di...

AI Technical Summary

Problems solved by technology

This traditional displacement sensing positioning system needs to install a large number of positioning card readers along the positioning area. Each card reader is composed of complex integrated circuits and radio frequency chips, and is connected by cables. The card readers are installed and debugged The workload is heavy, the later maintenance workload is heavy, the system failure rate is high, the stability is poor, and the positioning accuracy is poor. The effective positioning area is only a piece of discontinuous block radiating from the center point to the surrounding area of ​​each card reader.

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