System Performance of Wireless Sensor Network Using LoRa–Zigbee Hybrid Communication

Truong, Van-Truong; Nayyar, Anand; Lone, Showkat Ahmad

doi:10.32604/cmc.2021.016922

Cited by 20 publications

(12 citation statements)

References 17 publications

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“…In order to prevent communication congestion, we need to allocate channel resources reasonably and adopt polling multiple access technology. The polling mechanism can either allocate time slots for nodes using TDMA synchronously [65] or asynchronously using token passing [95], and the mechanism used is determined at the initialization time. Nodes use extensive communication broadcasts to initialize the whole system.…”

Section: Initializationmentioning

confidence: 99%

A Survey of Robot Swarms’ Relative Localization Method

Chen

Yin

Niu

2022

Sensors

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For robot swarm applications, accurate positioning is one of the most important requirements for avoiding collisions and keeping formations and cooperation between individuals. However, in some worst cases, the GNSS (Global Navigation Satellite System) signals are weak due to the crowd being in a swarm or blocked by a forest, mountains, and high buildings in the environment. Thus, relative localization is an indispensable way to provide position information for the swarm. In this paper, we review the status and development of relative localization. It is first assessed that relative localization to obtain spatio-temporal relationships between individuals is necessary to achieve the stable operation of the group. After analyzing typical relative localization systems and algorithms from the perspective of functionality and practicality, this paper concludes that the UWB-based (ultra wideband) system is suitable for the relative localization of robots in large-scale applications. Finally, after analyzing the current challenges in the field of fully distributed localization for robotic swarms, a complete mechanism encompassing the relative localization process and the relationship between local and global localization that can be a possible direction for future research is proposed.

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Section: Initializationmentioning

confidence: 99%

A Survey of Robot Swarms’ Relative Localization Method

Chen

Yin

Niu

2022

Sensors

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“…The main data involved are temperature and humidity data, status command data of light control node, number of surrounding nodes, control information data sent by ZigBee, search node queue data, current node information list, and modified name node information list. The main tasks involved are as follows: ZigBee searches the information of nearby nodes, sends the control data to the light control node, receives the light control node data from the interface layer, and collects the temperature and humidity in real time and sends it to the interface layer and interface touch screen [ 15 , 16 ]. The overall structure of the control panel is shown in Figure 1 .…”

Section: Software Designmentioning

confidence: 99%

Intelligent Light Control System Based on Zigbee

Wang

2022

Computational Intelligence and Neuroscience

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This system uses Freescale i.MX283 chip as the main control core of the control panel and LPC824 as the main control core of the light control point. ZigBee communication local area network is built. The ZigBee network is used to search all the nodes and display them on the control interface stably. The controller can selectively control the node and communicate with ZigBee. It supports simple and convenient human-computer interaction interface. The control panel can control RGB lamps of lamp control nodes as follows: control the light on and off, adjust the brightness of the light, toggle the color of the light, control the gradient of the light, control the flashing of RGB lamp, control timing switch of RGB lamp, realize the scene effect of the light, etc. After testing, the system is stable and applied to many lighting control occasions.

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“…It is intended for the communication of low-cost, low-power, and battery-powered devices. The specification covers the physical layer and access to the network medium, leaving the remaining layers to the applications [177]. The communication between the devices and the base stations (called gateways by the specification) is based on the LoRa modulation developed by the Semtech Company (Semtech, 2015a).…”

Section: ) Loramentioning

confidence: 99%

Systematic Review of Dynamic Multi-Object Identification and Localization: Techniques and Technologies

Ali¹,

Liu²,

He³

et al. 2021

IEEE Access

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Object identification and localization in indoor and outdoor environments are paramount issues in object-human interaction. Recent advancements in the data fusion capabilities of multi-sensor systems have paved the way for research on emerging object identification and positioning techniques. This review describes techniques and methods used in positioning technologies. State-of-the-art localization technologies are classified into range-based, range-free and AI-based categories. An in-depth analysis of localization approaches based on laser range finder, radio-frequency identification, ultra-wideband, inertial measurement unit, etc., are presented by providing a detailed comparison based on range, accuracy, measurement method, advantages, disadvantages, and their applications. Furthermore, we investigate stateof-the-art multimodal data fusion techniques that utilize probabilistic methods for the precise estimation of object identification in motion and its localization.INDEX TERMS Indoor and outdoor positioning systems; identification and localization; unstructured environment; multi-sensor system; multi-object; positioning and localization techniques.

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System Performance of Wireless Sensor Network Using LoRa–Zigbee Hybrid Communication

Cited by 20 publications

References 17 publications

A Survey of Robot Swarms’ Relative Localization Method

A Survey of Robot Swarms’ Relative Localization Method

Intelligent Light Control System Based on Zigbee

Systematic Review of Dynamic Multi-Object Identification and Localization: Techniques and Technologies

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