System and method for positioning indoor three-dimensional space based on movable anchor nodes

Abstract

The invention discloses a system and method for positioning an indoor three-dimensional space based on movable anchor nodes. The method includes the following steps: a wireless sensor network is established in the space, the anchor nodes in the network are divided into two sets, and the two sets are named planeXY and planeYZ respectively; According to local space environment, an appropriate XOY plane and an appropriate YOZ plane are chosen, all the anchor nodes in the planeXY set are deployed in the XOY plane, and all the anchor nodes in the planeYZ are deployed in the YOZ plane; the anchor nodes in the planeXY set can respectively move in the vertical direction in a periodic mode; the anchor nodes in the planeYZ set can respectively move in the horizontal direction in a periodic mode; the anchor nodes in the planeXY set are used for determining an X coordinate and a Y coordinate, wherein the X coordinate and the Y coordinate are provided with positioning blind nodes; the anchor nodes in the planeYZ are used for determining a Y coordinate and a Z coordinate, wherein the Y coordinate and the Z coordinate are provided with positioning blind nodes; according to coordinate values obtained through the two sets of anchor nodes, three-dimensional space coordinates of the blind nodes are determined, the movable anchor nodes are used for positioning, therefore, the positioning problem of the three-dimensional space of the wireless sensor network is solved, and the system and method for positioning the indoor three-dimensional space based on the movable anchor nodes have the advantage of being wide in positioning space.

Description

technical field [0001] The invention relates to an indoor three-dimensional space positioning system and method based on a mobile anchor node, belonging to the application field of wireless sensor networks. Background technique [0002] At present, the relatively mature positioning technology is the GPS positioning system, which has high precision and wide coverage. However, the positioning effect in some indoor spaces with small coverage is not very ideal. At present, the positioning technologies used indoors mainly include: infrared positioning technology, ultrasonic positioning technology, Bluetooth positioning technology, wireless sensor positioning technology, etc. Among them, infrared positioning technology has high reliability, but because it can only transmit in a straight line, it is generally only used in open spaces, and its versatility is not strong; ultrasonic positioning technology relies on ultrasonic positioning, and its positioning accuracy is high, but it ...

AI Technical Summary

Problems solved by technology

However, in the research of wireless sensor network positioning technology, there are many studies on the two-dimensional plane, and relatively few studies on the three-dimensional space.

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