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An Indoor Positioning Method Based on Path Attenuation Coefficient Database Construction

A path attenuation, indoor positioning technology, applied in the direction of location information-based services, energy consumption reduction, advanced technology, etc., can solve the problems of high cost, low positioning accuracy, and complicated implementation.

Active Publication Date: 2018-04-20
北京停碳科技有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to provide an indoor positioning method based on an environment-adaptive channel model to solve the problems of low positioning accuracy, complex implementation and high cost in the prior art

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  • An Indoor Positioning Method Based on Path Attenuation Coefficient Database Construction
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  • An Indoor Positioning Method Based on Path Attenuation Coefficient Database Construction

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Embodiment Construction

[0072] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0073] An embodiment of the present invention, in this embodiment, a small number of nodes have a priori location information, which are called reference nodes, and the remaining nodes whose location information is unknown are called blind nodes. All nodes, regardless of whether they have a priori coordinate position information, need to measure the received signal strength of the nodes within their effective transmission distance, and convert it into the distance b...

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Abstract

The invention discloses an indoor positioning method of path attenuation coefficient based database construction. The method is divided into a training stage and a positioning stage; the training stage is mainly to obtain a corresponding attenuation coefficient of each reference node in the environment and an average attenuation coefficient of signal propagation in the environment by utilizing the known received signal strength and distance information; the positioning stage is mainly to obtain a distance between a blind node and the corresponding reference node and a distance between the blind nodes by utilizing the corresponding attenuation coefficients of the reference nodes in the environment which are obtained in the training stage, thereby obtaining a relative coordinate position of each blind node. The indoor positioning method is high in positioning precision, simple in implementation, low in system power consumption and low in cost.

Description

technical field [0001] The invention belongs to the technical field of wireless network positioning, and in particular relates to an indoor positioning method for building a library based on path attenuation coefficients. Background technique [0002] With the rise of the concept of the Internet of Things and the rapid development and popularization of mobile computing devices, Wireless Sensing Network (WSN) has become a research hotspot in the industry. The goal of the wireless sensor network is to connect the original scattered and independent hardware nodes to form a shared network. Each node in the network has the ability to send and receive signals, and gives the required environmental information to achieve the goal of users and tools. of interaction. The so-called environmental information, one of which is the spatial location information, if the current location of the node can be obtained, then many practical personalized functions can be realized. For example: de...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W16/22H04W84/18
CPCH04W4/02H04W16/225H04W84/18Y02D30/70
Inventor 秦爽段林甫聂永峰吴国栋仰石柏思琪
Owner 北京停碳科技有限公司
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