Large-scale multiple-object ultrasonic tracking and locating system and method

A tracking and positioning, multi-target technology, which is applied in the field of large-scale multi-target ultrasonic tracking and positioning systems, can solve the problems of difficult position information, poor real-time performance, and low positioning accuracy, and achieve smooth tracking images, high positioning accuracy, and wide application range Effect

Active Publication Date: 2011-04-27
JILIN UNIV
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Problems solved by technology

To solve the problems of poor real-time performance, low positioning accuracy and difficult calculation of position information in the ultrasonic tracking and positioning system and method of large-scale multi-target

Method used

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  • Large-scale multiple-object ultrasonic tracking and locating system and method
  • Large-scale multiple-object ultrasonic tracking and locating system and method
  • Large-scale multiple-object ultrasonic tracking and locating system and method

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Embodiment approach

[0057] One embodiment of the present invention is that: the ultrasonic signal transmitter included in the emitting component emits ultrasonic signals with different frequencies or different time slot characteristics.

[0058] One embodiment of the present invention is: the ultrasonic signal receiving and processing unit included in the receiving component is composed of a master control unit and 4 slave control units, and the master and slave control units are in a certain regular geometric distribution, and the master control unit It is distributed on a straight line with two of the slave control units, and on another straight line with the other two slave control units, and the master control unit is distributed between the corresponding two slave control units on each straight line. The unit is responsible for the opening state of the slave control unit, and determines whether the ultrasonic signal receiving and processing unit where it is located is selected for the trackin...

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Abstract

The invention provides a large-scale multiple-object ultrasonic tracking and locating system and method, relating to an indoor object tracking and locating system and method based on ultrasonic wave. The large-scale multiple-object ultrasonic tracking and locating system comprises an emitting assembly, a receiving assembly and a calculating display unit, wherein the emitting assembly comprises a plurality of ultrasonic signal emitters with different frequencies or different time slot features, and each emitter is installed on different objects and used for periodically emitting ultrasonic signals; the receiving assembly comprises a plurality of ultrasonic signal receiving and processing units for receiving and processing the ultrasonic signal emitted by the emitter; and the calculating display unit comprises a USB (Universal Serial Bus) and an upper computer three-dimensional display server. The invention realizes the tracking and the locating of large-scale multiple-object by schemesof spatial subdivision, time frequency combination, spatial handoff and the like. The locating system of the invention has the characteristics of large locating range, multiple tracking objects, no synchronous error, no need of complex network protocol, low power consumption, high stability and the like.

Description

technical field [0001] The invention relates to an ultrasonic-based indoor target tracking and positioning system, in particular to a large-scale multi-target ultrasonic tracking and positioning system and method based on ultrasonic propagation time delay difference TDOA. Background technique [0002] In recent years, with the rapid increase of data services and multimedia services, people's demand for positioning and navigation is increasing, especially in complex indoor environments, such as airport halls, exhibition halls, supermarkets, libraries, underground parking lots, mines, etc. In the mobile terminal, it is often necessary to determine the location information of the mobile terminal or its holder, facilities and objects. However, limited by conditions such as positioning time, positioning accuracy, positioning range, and the number of positioning targets, relatively complete positioning technology cannot be well applied indoors at present. Therefore, experts and s...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/22
Inventor 孙晓颖田野陈建王波温泉伍荣福
Owner JILIN UNIV
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