Indoor ultrasonic positioning method and system based on network level clock synchronization

A clock synchronization and positioning method technology, applied in radio wave measurement systems, positioning, synchronization devices, etc., can solve the problems of high network load pressure, short life cycle, high node power consumption, etc., achieve high accuracy, improve life cycle, The effect of reducing network load and node power consumption

Inactive Publication Date: 2015-12-30
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an indoor ultrasonic positioning method and system based on network-level clock synchronization, so as to solve the problems of large network load pressure, large node power consumption, and short life cycle in the traditional ultrasonic positioning method existing in the prior art. question

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  • Indoor ultrasonic positioning method and system based on network level clock synchronization
  • Indoor ultrasonic positioning method and system based on network level clock synchronization
  • Indoor ultrasonic positioning method and system based on network level clock synchronization

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Embodiment 1

[0039] see figure 1 and figure 2 As shown, an indoor ultrasonic positioning method based on network-level clock synchronization provided by an embodiment of the present invention includes:

[0040] S1: Obtain the location information of base station node 1 in the network;

[0041] S2: Add the positioning node 2 to the network, and measure the distance between the positioning node 2 and at least three base station nodes 1 by using the ultrasonic ranging method of network-level clock synchronization;

[0042] S3: Combining the location information of the at least three base station nodes 1, process the measured distance information to determine the location information of the positioning node 2.

[0043] In the indoor ultrasonic positioning method based on network-level clock synchronization described in the embodiment of the present invention, by obtaining the position information of the base station node 1 in the network; distance method, measuring the distance between the...

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Abstract

The invention provides an indoor ultrasonic positioning method and system based on network level clock synchronization. Network traffic can be reduced, network loads and node power consumption can be reduced, the life cycle of a whole network can be prolonged, and positioning precision of the whole network can be improved. The method includes the steps that position information of base station nodes in the network is acquired; a positioning node is added into the network, and distances between the positioning node and the at least three base station nodes are measured through an ultrasonic ranging method of network level clock synchronization; measured distance information is processed through cooperation with the positioning information of the at least three base station nodes, and position information of the positioning node is determined. The indoor ultrasonic positioning method and system based on network level clock synchronization are applicable to the technical field of wireless sensor network positioning.

Description

technical field [0001] The invention relates to the technical field of wireless sensor network positioning, in particular to an indoor ultrasonic positioning method and system based on network-level clock synchronization. Background technique [0002] In recent years, the application of positioning technology has become more and more extensive. The most commonly used method for outdoor positioning is GPS, but GPS cannot receive signals indoors, so it cannot be used indoors. The rapid development of data services and multimedia services has led to an increasing demand for positioning and navigation. The indoor environment will be more complex than the outdoor environment, especially in parking lots, airports, supermarkets, museums, etc. It is often necessary to determine the location of the facilities or terminals The location of the user, which requires the support of indoor positioning technology. [0003] Common indoor positioning technologies mainly include: Wifi positio...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/22G01S5/26H04W56/00H04W64/00
CPCG01S5/22G01S5/26H04W56/001H04W64/00
Inventor 张晓彤油晓峰
Owner UNIV OF SCI & TECH BEIJING
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