Wireless sensor network node positioning method

Abstract

The invention discloses a wireless sensor network node positioning method comprising the following steps that a kinetic model of anchor nodes is established by using ADAMS so that an ADAMS hard point file is acquired; the coordinate values of all the anchor nodes in the ADAMS hard point file are read so that a modifiable hard point table is formed; a hard point construction model is established according to the hard point table, and the hard point construction model includes the hard point coordinates of all the anchor nodes; each anchor node in the network broadcasts a message, and an unknown node monitors the message of the anchor node and exchanges the monitored message of the unknown node with the neighbor unknown nodes; and the distance between the nodes is calculated by utilizing RSSI wireless signal intensity information, and an angle formed by the unknown node and the three adjacent known nodes is acquired so that the coordinates of the unknown node are acquired. The workload and complexity in the positioning process can be reduced, and positioning accuracy can also be enhanced.

Description

technical field [0001] The invention relates to the field of wireless sensing, in particular to a wireless sensor network node positioning method. Background technique [0002] With the development of microelectromechanical system, system on chip, wireless communication and digital electronic technology, wireless sensor network, as a new information acquisition and processing mode, has the characteristics of low power consumption, low cost, distribution and self-organization, and has huge application prospects. A wireless sensor network is a wireless network composed of a large number of stationary or moving sensors in a self-organizing and multi-hop manner to cooperatively perceive, collect, process, and transmit information about perceived objects in the geographical area covered by the network, and finally transfer these Information is sent to the owner of the network. [0003] For wireless sensor networks, positioning technology is a key part of its functional applicat...

AI Technical Summary

Problems solved by technology

However, in the current positioning technology, there is a common problem of large positioning error, and some technologies have high requirements on the complexity of sensor nodes, and the positioning cost is relatively high.