Indoor positioning system based on wireless sensor network and implementing method

Abstract

The invention discloses an indoor location system based on a wireless sensor network and a method for realizing the system, wherein the system is a plane location network consisting of a beacon nodes and blind nodes. The method comprises the following steps: firstly, a networking initialization step, carrying out information exchanging between the beacon nodes, realizing the networking of the whole location network, secondly, a distributing location step, carrying out the location information exchanging between the blind nodes and the beacon nodes, and the blind nodes realize the distributing type self-locating, thirdly, a locating result transmitting step, the blind node transmits the self-located results to the beacon node which is most near the blind node itself, and the beacon node transmits the location results to a convergent node through a router or other beacon nodes. The system is suitable for the real time location of the blind nodes which comprise windows and various barriers in indoor environment, can provide various location information service, such as the guiding service of mobile users in an exhibition, the location monitoring of patients in hospitals, and the searching of customers in supermarkets.

Description

technical field [0001] The invention belongs to the technical field of wireless sensor networks, in particular to a positioning system and an implementation method based on wireless sensor networks, and is mainly aimed at the application of indoor positioning. Background technique [0002] Wireless sensor network (WSN) can collaboratively detect, track and collect information of various environments or monitoring objects in the network deployment area in real time, and coordinate and fuse these information to obtain more accurate conclusions, and then transmit them to users. It has broad application prospects in military, target tracking, environmental monitoring, medical and health, industrial automation, public safety and other application fields. For most wireless sensor networks, the data sensed without knowing the location of the sensor is meaningless. In addition, wireless sensor networks are used to provide location-aware services, including location navigation, loc...

AI Technical Summary

Problems solved by technology

In the Cricket positioning system, a blind node only knows its own position, but cannot obtain the positions of other blind nodes

However, the application scenarios of these systems have their limitations, and these indoor positioning systems pay more attention to the research of positioning algorithms, and less research on how to choose appropriate networking and communication mechanisms to build a truly usable and scalable indoor positioning network

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