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This research proposed a WiFi energy harvester for low-power wireless applications. The proposed system harvests energy using three antennas to cover three ISM (Industrial, Scientific, and Medical) channels with central frequencies at 2.412 GHz, 2.439 GHz, and 2.462 GHz. For each channel, a co-planar waveguide antenna is designed to harvest energy from indoor WiFi transmitters. FR4 substrate with...
A direct sequence spread spectrum implementation was developed in an effort to extend the operational lifetime of legacy analog wireless audio equipment. These legacy devices have an uncertain future due to spectrum reallocation and repurposing in the United States. Through the development of a drop-in module incorporating spread spectrum techniques, aging analog equipment can benefit from audio integrity...
Communication in industrial applications like wireless factory automation demands high reliability and low latency. Due to the fact that state of the art wireless sensor networks do not entirely fulfill the high requirements, new approaches have to be developed. An ultra-wideband system in combination with a MAC protocol for time-critical applications seems to be a promising approach. This paper introduces...
Workers protection in collaborative industrial robotics application represents the predominant aspect of robot safety in production systems. Flexible production systems and multimodal human-robot interactions often encompass cooperative tasks that are performed in fenceless configurations. Collaborative open workspaces enable, in fact, a workflow of continuously interchangeable tasks done by operators...
This paper presents a real-time system based on Wireless Sensor Network (WSN) capable of detecting collisions of vehicles with motorways' guardrails. The system is based on Service Oriented Architecture (SOA) with web services, where the WSN and other applications, like alarm systems and management of WSNs, are connected. It is also presented a simulation based mathematical model using finite element...
This paper presents design and implementation of a spatially distributed measurement system using Wireless Sensor Networks (WSN) for real-time condition and performance monitoring of industrial machines in a manufacturing system setting. Main focus in this study was given to applications in small-to-medium size metalworking industry, where most of the machinery are conventional and do not support...
One of technology's main goals is to providing comfort to humans. However, in order to be an aid, it has to be easy to install, use and maintain. The ever growing complexity of technological systems can only be achieved by converging different technologies. This is usually expressed as Cyber-Physical Systems (CPS), previews the symbiosis of several technologies in order to make them more accessible...
Water distribution networks require long term autonomous monitoring solutions, integrated, reliable and cost effective data transfer methods. This paper investigates the data delivery infrastructure of water distribution network sensor equipment used for network monitoring and billing of the subscribers. Water distribution network usually apply sensors to measure water flow, pressure and temperature...
The spectrum used by wireless sensor networks and smart metering networks is becoming increasingly crowded due to the increasing deployment of IEEE 802.11b/g and Bluetooth devices as well as other co-located wireless sensor networks. Using an energy detection application, this paper presents the statistics of the interfering power levels from typical IEEE 802.11b/g devices, Bluetooth devices and wireless...
The objective of this paper is to summarize the recent literature and application examples of the use of Wireless Sensor Networks (WSN) in the industry. Main focus in this paper is primarily on the use of collaborative wireless sensor networks for condition and performance monitoring of the industrial machines and plants. Current challenges and potential future research issues are outlined for design...
The IEEE 802.15.4e amendment provides different modalities over which Wireless Sensor Networks (WSNs) can be deployed, even with strict requirements in terms of latency and determinism; still, there seems to be room for improvement. This paper proposes two enhancements for IEEE 802.15.4e LLDN mode: (1) allowing a reduced and more predictable configuration time and (2) focusing on the worst-case latency...
An autonomous, wireless multi-variable smart sensor is presented able to gather, validate, and locally process data on both position alignment and temperature in remotely-operated high-voltage disconnect switches, as part of an instrumentation system which, integrating small, smart, and deeply embedded “field” devices in large numbers, may address the data requirements placed by new sophisticated...
Wireless networked control systems (WNCS) are attracting an increasing research interests in the past decade. This is particularly relevant for the areas of communication, control and computing where successful design of WNCS brings about new challenges to the researchers. The primary motivation of this survey paper is to examine the design issues, identifying recent guidelines for the issues and...
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