Multi-target three-dimensional ultrasonic tracking positioning system and method

A three-dimensional ultrasound, tracking and positioning technology, used in positioning, radio wave measurement systems, instruments, etc., can solve the problems of unsuitable embedding, low positioning accuracy, low stability, etc., to improve computing speed, reduce complexity, improve The effect of positioning accuracy and real-time performance

Inactive Publication Date: 2014-01-29
JILIN UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] The present invention provides a multi-target three-dimensional ultrasonic tracking and positioning system and method to solve the problems of low positioning accuracy, poor real-tim

Method used

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  • Multi-target three-dimensional ultrasonic tracking positioning system and method
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  • Multi-target three-dimensional ultrasonic tracking positioning system and method

Examples

Experimental program
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Effect test

example 1

[0097] Example 1: When there are two targets to be located

[0098] 1) At the transmitting end, install a 25KHz ultrasonic signal transmitter and a 20KHz infrared signal transmitter on target 1, install a 40KHz ultrasonic signal transmitter and a 38KHz infrared signal transmitter on target 2, target 1 and target 2 can emit ultrasonic and infrared signals periodically.

[0099] 2) At the receiving end, install the microphone receivers in the three ultrasonic receiving and processing units to the three vertices of an equilateral triangle with a side length of 12cm, and install the infrared receiving head in the infrared receiving and processing unit inside the equilateral triangle.

[0100] 3) Each ultrasonic receiving unit includes a microphone receiver, a low-noise amplifier circuit, a trap circuit and an automatic gain circuit. Assuming that the 40KHz ultrasonic signal needs to pass through at this time, it is necessary to filter out the 25KHz ultrasonic signal. Using the mic...

example 2

[0106] Example 2: When there are five targets to be located

[0107] 1) At the transmitting end, install the 25KHz ultrasonic signal transmitter and 20KHz infrared signal transmitter on target 1, install the 40KHz ultrasonic signal transmitter and 38KHz infrared signal transmitter on target 2, and install the 55KHz ultrasonic signal transmitter Install the signal transmitter and 56KHz infrared signal transmitter on target 3, install the 70KHz ultrasonic signal transmitter and 74KHz infrared signal transmitter on target 4, install the 85KHz ultrasonic signal transmitter and 92KHz infrared signal transmitter Installed on target 5, target 1, target 2, target 3, target 4, target 5 can emit ultrasonic and infrared signals periodically.

[0108] 2) At the receiving end, install the microphone receivers in the three ultrasonic receiving and processing units to the three vertices of an equilateral triangle with a side length of 12cm, and install the infrared receiving head in the infr...

example 3

[0115] Example 3: When there are N targets to be located

[0116] 1) At the transmitting end, install a 25KHz ultrasonic signal transmitter and a 20KHz infrared signal transmitter on target 1, install a 40KHz ultrasonic signal transmitter and a 38KHz infrared signal transmitter on target 2, and [25+ 15*(N-1)]KHz ultrasonic signal transmitter and [20+18*(N-1)]KHz infrared signal transmitter are installed on target N, target 1, target 2....Target N can be periodically Transmits ultrasonic and infrared signals.

[0117] 2) At the receiving end, install the microphone receivers in the three ultrasonic receiving and processing units to the three vertices of an equilateral triangle with a side length of 12cm, and install the infrared receiving head in the infrared receiving and processing unit inside the equilateral triangle.

[0118] 3) Each ultrasonic receiving unit includes a microphone receiver, a low-noise amplifier circuit, a trap circuit and an automatic gain circuit. Assuming...

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Abstract

The invention relates to a multi-target three-dimensional ultrasonic tracking positioning system and method, in particular to an ultrasonic propagation time delay TOA multi-target three-dimensional ultrasonic tracking positioning system and method using infrared signals as time base. The positioning system comprises a transmitting component, a receiving component and a signal processing and displaying component. The positioning method uses the infrared signals as the time base, distinguishing of multiple targets are achieved through frequency division multiplexing of the infrared signals and ultrasonic signals, a wave trap circuit is combined with a digital filter to separated the ultrasonic signals of different targets, automatic gain is used to complete far-near positioning seamless switching of the targets, and high-precision multi-target ultrasonic tracking positioning is achieved. The system and method has the advantages that no interference occurs among the multiple targets, and the system and method is high in precision, simple in network protocol, simple and efficient in algorithm, and widely applicable to small and portable embedded equipment in fields such as education, entertainment and medical treatment.

Description

technical field [0001] The invention relates to a multi-target three-dimensional ultrasonic tracking and positioning system, in particular to a multi-target three-dimensional ultrasonic tracking and positioning system and method based on an infrared signal as a time-based ultrasonic propagation time delay TOA. Background technique [0002] In recent years, with the rise and development of virtual reality technology, people's demand for user experience of human-computer interaction products is also increasing. Positioning technology is the basis of human-computer interaction technology, and its technical indicators such as accuracy, real-time performance and anti-interference are getting more and more attention. At present, there are a variety of positioning technology solutions at home and abroad, such as infrared positioning technology, electromagnetic positioning technology, visual positioning technology and ultrasonic positioning technology, etc. The practical products in...

Claims

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Application Information

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IPC IPC(8): G01S5/18G01S5/30
CPCG01S5/30
Inventor 孙晓颖赵一航封家鹏陈建田野燕学智韩新立宋淑婷
Owner JILIN UNIV
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