Abstract
Internet of Things (IoT) is one of the newest matters in both industry and academia of the communication engineering world. On the other hand, wireless mesh networks, a network topology that has been debate for decades that haven’t been put into use in great scale, can make a transformation when it arises to the network in the IoT world nowadays. A Mesh IoT network is a local network architecture in which linked devices cooperate and route data using a specified protocol. Typically, IoT devices exchange sensor data by connecting to an IoT gateway. However, there are certain limitations if it involves to large number of sensors and the data that should be received is difficult to analyze. The aim of the work here is to implement a self-configuring mesh network in IoT sensor devices for better independent data collection quality. The research conducted in this paper is to build a mesh network using NodeMCU ESP 8266 and NodeMCU ESP 32 with two types of sensor, DHT 11 and DHT 22. Hence, the work here has evaluated on the delay performance metric in Line-of-Sight (LoS) and Non-Line-of-Sight (nLos) situation based on different network connectivity. The results give shorter delay time in LoS condition for all connected nodes as well as when any node fail to function in the mesh network compared to nLoS condition. The paper demonstrates that the IoT sensor devices composing the mesh network is a must to leverage the link communication performance for data collection in order to be used in IoT-based application such as fertigation system. It will certainly make a difference in the industry once being deployed on large scale in the IoT world and make the IoT more accessible to a wider audience.
Highlights
The Internet of Things (IoT) is a new area of technology that allows physical objects to communicate with one another, with the aim of making human life better and more convenient
The work here would further extend the study by examining the delay time required to create the mesh network in LoS situation, nLoS and disconnect one node to show the efficiency of mesh network
The study here was carry out by a working prototype where the results obtained was tested for each input to ensure that it matched the intended output. It was using the serial port controller to get the outputs of each node in the mesh network
Summary
The IoT is a new area of technology that allows physical objects to communicate with one another, with the aim of making human life better and more convenient. Mesh networking is a local network topology in which nodes are individually, dynamically, and non-hierarchically linked to one another and work with others to route data from/to clients efficiently 5.
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