Multi-frequency-leakage-communication-technology-based displacement positioning system and positioning method for moving objects in roadways
A positioning method and technology for moving objects, which are applied in the positioning field of displacement sensing positioning systems, can solve the problems of high requirements on crystal oscillator and electrical performance of mobile stations, short flight time of short-range signals, and difficulty in ensuring positioning accuracy, so as to reduce later maintenance. Workload, smooth real-time positioning across the board, and the effect of reducing installation workload
Active Publication Date: 2015-02-04
童建伟
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Problems solved by technology
Although this technology can achieve accurate positioning throughout the process, it has high requirements on the crystal oscillator and electrical performance of the mobile station itself, high cost, short flight time of short-range signals, and difficulty in ensuring positioning accuracy.
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[0018] Such as figure 1 As shown, the present invention includes a host computer 1, a base station 2 and a mobile station 3, and the base station 2 is connected with a leaky communication cable L. The base station 2 is provided with a base station data processing chip 21, a base station multi-frequency continuous wave radio frequency transceiver module 22 and a base station phase detector 23, and the three are interactively connected, wherein the base station multi-frequency continuous wave radio frequency transceiver module 22 is connected to the leaky communication cable L for communication, and the mobile A data processing chip 31, a multi-frequency continuous wave radio frequency transceiver module 32 and a phase detector 33 are arranged in the station 3, and the three are interactively connected. The mobile station 3 communicates with the base station through the multi-frequency continuous wave radio frequency transceiver module 32 and the leaky communication cable. The...
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The invention relates to multi-frequency-leakage-communication-technology-based on displacement positioning system and positioning method for moving objects in roadways. The system comprises a plurality of base stations communicated with an upper computer and a plurality of mobile stations moving along a leakage communication cable, wherein data processing chips, multi-frequency continuous wave radio frequency transceiver modules and phase discriminators are arranged in the base stations and the mobile stations; the multi-frequency continuous wave radio frequency transceiver modules of the base stations are communicated with the leakage communication cable L and used for receiving and transmitting multi-frequency continuous wave signals to the leakage communication cable L; and the mobile stations are used for measuring the phase values of the multi-frequency signals and the synchronous phase difference values among the phase values and the phases as well as among the phase values and the multi-frequency signals through the phase discriminators after receiving the signals at positioning points, measuring and calculating the positions of the mobile stations through calculation so as to realize the displacement positioning of the mobile stations. The system disclosed by the invention has the advantages of realizing the whole-line smooth real-time positioning, completely avoiding the installation of a card reader, reducing the installation workload and the later maintenance workload and improving the stability, and the system is simplified.
Description
technical field [0001] The invention relates to the field of displacement sensing positioning, in particular to a positioning method of a displacement sensing positioning system based on multi-frequency leakage communication technology. Background technique [0002] At present, most of the traditional location positioning systems for closed roadways are used on the positioning line. RF card readers are installed at each positioning point, and the moving target carries a radio frequency identification card. Installing a large number of card readers requires heavy workload, heavy maintenance workload, high system failure rate, limited coverage area, and many blind spots. Chinese patent CN202614244U discloses a displacement sensing positioning system and method based on leaky communication cable radio frequency communication technology. This technology uses two leaky communication cables to and fro to measure the distance by using the signal to and fro flight time to achieve po...
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IPC IPC(8): G01S11/04G01S1/68
Inventor童建伟
Owner童建伟