In this work, a portable real-time wireless health monitoring system is developed. The system is used for remote monitoring of patients’ heart rate and oxygen saturation in blood. The system was designed and implemented using ZigBee wireless technologies. All pulse oximetry data are transferred within a group of wireless personal area network (WPAN) to database computer server. The sensor modul...

In the Internet of Things (IoT), different wireless technologies will be used to build various micro-systems, which result mutual interference among these micro-systems. Specifically, ZigBee networks share the 2.4GHz ISM band with WiFi but have much lower transmission power. Therefore, the ZigBee networks inevitably suffer the interference from WiFi Networks. Unlike previous approaches that foc...

A wireless subway collision avoidance system based on zigbee network is proposed in this paper. In the proposal, all the zigbee nodes are divided into two types, fixed nodes and mobile nodes. The fixed nodes are deployed in tree topology networks overlapped with each other along the subway tunnel; the mobile nodes are installed on the trains. The core idea is as soon as a fixed node establishin...

This paper introduces a new technique, a wireless control and monitoring system for an induction motor using the Zigbee protocols”. We know induction motor is mostly used in the industrial applications; hence analysis of induction motor is much essential to find out utilization index of a motor for better performance. Hence monitoring and controlling of parameters of induction motor is necessar...

Wireless home automation networks are gaining importance for smart homes. In this ambit, ZigBee networks play an important role. The ZigBee specification defines a default set of protocol stack parameters and mechanisms that is further refined by the ZigBee Home Automation application profile. In a holistic approach, we analyze how the network performance is affected with the tuning of paramete...

ZigBee is a current wireless standard based on IEEE 802.15.4 used in Wireless Sensor Networks (WSNs) stimulates many interests. In a built WSN, the information about some part of interest may need further research such that more traffic will be generated. Earlier work presented adoptiveparent-based framework for a ZigBee cluster-tree network which provided more flexible routing and increase ban...

Cross-technology communication (CTC) is a technique that enables direct communication among different wireless technologies. Recent works in this area have made positive progress, but high-throughput CTC from ZigBee to WiFi remains an open problem. In this paper, we propose ZigFi, a novel CTC framework that enables direct communication from ZigBee to WiFi. Without impacting the ongoing WiFi tra...

A prototype of Loongson IoT ZigBee gateway is already designed and implemented. However, it is not perfect. And a lot of things should be done to improve it, such as adding IEEE 802.11 function, using fully open source ZigBee protocol stack or using fully open source embedded operating system, and implementing multiple interfaces.

ZigBee has been recently drawing a lot of attention as a promising solution for ubiquitous computing. The ZigBee devices are normally resource-limited, making the network susceptible to a variety of security threats. This paper presents a severe attack on ZigBee networks termed as ghost, which leverages the underlying vulnerabilities of the IEEE 802.15.4 security suites to deplete the energy of...

The most important aspect of the MINER Act is providing reliable communication for miners before and after tragic accidents. Reliable communication has always been a challenge in underground mines due to changing topologies and harsh environment. In addition, disasters disable electricity and communications cables, block tunnels and cause fire. These may damage the communication infrastructure ...