Application of the Fresnel zone and Free-space Path for image reconstruction in radio tomography

Maj, Michał; Rymarczyk, Tomasz; Kania, Konrad; Niderla, Konrad; Styła, Michał; Adamkiewicz, Przemysław

doi:10.1109/iiphdw.2019.8755429

Cited by 6 publications

(6 citation statements)

References 18 publications

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“…The measurement started when a value of 1 was sent to a given anchor and then a return message of 0 was awaited. The message was sent via the Bluetooth UART service [5,7]. The mounts were designed to be attached to the wall with double-sided tape.…”

Section: Resultsmentioning

confidence: 99%

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Indoor Localization System Using Uwb

Gnaś¹,

Adamkiewicz

2022

IAPGOS

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This paper discusses two ways of measuring the distance between the transmitter and the receiver using UWB technology, then identifies their advantages and disadvantages. The method of calculating the position is presented together with the method of predicting errors based on room geometry. The hardware configuration of the transmitter and receiver systems included in a location system based on UWB technology is explained. Bluetooth technology is discussed, which is used to connect the location system with the environmental monitoring system.

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Section: Resultsmentioning

confidence: 99%

“…For Bluetooth communication to work properly, it was necessary to adjust the impedance of the antenna path to a value of 50 Ω. To do this, a built-in Altium Designer environment tool was used to adjust the width of a given path to achieve the required impedance [5].…”

Section: Fig 5 Simplified Circuit Diagrammentioning

confidence: 99%

Indoor Localization System Using Uwb

Gnaś¹,

Adamkiewicz

2022

IAPGOS

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“…Tikhonov regularizations are still used to find the inverse of the matrix here. The sensitivity matrix is calculated assuming that the significant area between the two transmitters in which the RSSI drops can occur is ellipsoid in shape as stated in the Fresnel zone theorem [7,69,70].…”

Section: Radio Tomography Imaging-reconstruction Algorithmsmentioning

confidence: 99%

“…With a certain tolerance, they also allow the detection of inanimate elements of the environment, but it is strongly dependent on the material they are made of. This phenomenon is fundamental due to the detection capabilities of radio tomography [7].…”

Section: Introductionmentioning

confidence: 99%

A Smart Building Resource Prediction, Navigation and Management System Supported by Radio Tomography and Computational Intelligence

Styła¹,

Adamkiewicz

Cieplak

et al. 2021

Energies

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This article presents research results on a smart building prediction, navigation and asset management system. The main goal of this work was to combine all comfort subsystems, such as lighting, heating or air conditioning control, into one coherent management system supported by navigation using radio tomographic imaging techniques and computational intelligence in order to improve the building’s ability to track users and then maximize the energy efficiency of the building by analyzing their behavior. In addition, the data obtained in this way were used to increase the quality of navigation services, improve the safety and ergonomics of using the room access control system and create a centralized control panel enriched with records of the working time of individual people. The quality of the building’s user habit learning is ensured by a network of sensors collecting environmental data and thus the setting values of the comfort modules. The advantage of such a complex solution is an increase in the accuracy of navigation services provided, an improvement in the energy balance, an improvement in the level of safety and faster facility diagnostics. The solution uses proprietary small device assemblies with implementation of popular wireless transmission standards such as Bluetooth, Wi-Fi, ZigBee or Z-Wave. These PANs (personal area networks) are used to update and transmit environmental and navigation data (Bluetooth), to maintain the connection of other PANs to the master server (Wi-Fi) and to communicate with specific end devices (ZigBee and Z-Wave).

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“…In the presented solution, they are concerned with using the ISM (Industrial, Scientific, Medical) 2.4 GHz band and the alternative use of Bluetooth 5 technology for navigation purposes other than technology-based on beacon devices [4,18]. The idea behind the project is to use commercial radio technology to create a PAN network for radio tomographic imaging and then to use the system in navigation for indoor applications [1,3].…”

Section: Introductionmentioning

confidence: 99%