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Smart environments interconnect indoor building environments, indoor wireless sensor and actuator networks, smartphones, and human together to provide smart infrastructure management and intelligent user experiences. To enable the "smart" operations, a complete set of hardware and software components are required. In this work, we present Smart Syndesi, a system for creating indoor location-aware...
The advent of Internet-of-Things (IoT) applications, such as environmental monitoring, smart cities, and home automation, has taken the IoT concept from hype to reality at a massive scale. However, more mission-critical application areas such as energy, security and health care do not only demand low-power connectivity, but also highly reliable and guaranteed performance. While fulfilling these requirements...
Wireless technologies have attracted the attention of the industrial sector, due to their multiple advantages such as ease of installation, flexibility and mobility. However, the application of wireless in industry is most limited to non-critical sensing applications, making the communication of critical instruments and control systems almost exclusively with wired media. Despite this, wireless technologies...
Wireless Sensor Networks (WSNs) use mobile actuators for data gathering, which can effectively reduce the energy loss caused by data forwarding and prolong the network lifetime. However, mobile data gathering can't fundamentally change the fact that the energy of sensor nodes is limited. In this paper, to reduce the energy consumption due to data forwarding in wireless sensor networks, an emergency...
This paper describes the design and implementation of a wireless home automation system that can be used for general purposes in our life. The proposed system is designed for easy installation, so it could be use at any location to gather indoor conditions. The proposed system comprises of a wireless sensor and actuator network which is low cost and low power. Each wireless sensor node senses and...
An experiment was conducted to investigate network jamming attacks on an Industrial Control Systems. The Secure Water Treatment (SWaT) system was chosen to perform the experiments. Jamming attacks were launched on SWaT using software defined radio. Attacks were designed to meet attacker objectives selected from a Cyber Physical Systems specific attacker model. Attacks exposed vulnerabilities associated...
Asynchronous event-triggered control (AETC) is a triggering strategy for the feedback channel of a closed-loop control system. AETC aims at reducing transmissions compared with time-triggered control strategies and listening time compared with other event-triggered control strategies. This work is an extension of the asynchronous event-triggered control [6] on reducing periodic listening time spent...
We present recent work in the design and operation of wireless sensor-actuation systems along three aspects. At the device level, a major drive is the reduced power consumption of the wireless transceivers without loss of control performance. At the channel access level, a shared wireless channel needs to be administered between multiple systems with control performance guarantees for all systems...
Nowadays, reliability is becoming more and more important in the design of Networked Control Systems (NCSs). Fault-tolerance is often used to increase system reliability. In this paper, Triple Modular Redundancy (TMR) and Parallel Redundancy Protocol (PRP) are both applied to a Sensor-to-Actuator architecture with 16 sensors, 4 Actuators and one Supervisor. Two of the 16 sensors as well as two of...
Wireless Body Area Network (WBAN) applications are becoming popular today. To protect patients' private data during transportation, secure wireless communications are mandatory in WBANs. Encryptions and secret keys are the base of secure communications over insecure wireless environments. Given most wireless nodes in WBANs are resource-constrained, efficiency is an implicit requirement of the key...
Technological advances in wireless sensors shed some light on the deployment of Industrial Wireless Sensor and Actuator Networks (IWSAN) for diverse applications in process automation due to their multiple advantages related to the reduction in wiring costs, implementation and maintenance. However, the most critical processes, like closed loop control applications which have shorter than 1 ms time...
In this paper, a method of interaction with Wireless Sensors Networks (WSN) through cloud, called Wireless Sensor Network over Cloud (WSN-C), is proposed. The physical sensors are not considered stand-alone sensors but they can be monitored, controlled and updated (programmed) via cloud services. The Cloud can communicate with the sensors through the WSN access point, or Sensor Gateway. Thus, every...
In this article we have presented experimental results to evaluate the effectiveness of wireless fingerprinting based on Received Signal Strength Indicator(RSSI). Experiments are conducted on a real world water treatment testbed. Results indicate unique vantage point for Cyber Physical System(CPS) settings as the wireless environment is comparatively static hence the significance of signal strength...
Smart lighting is an illumination technology designed for energy efficiency. This may include high efficiency features and automated controls that make adjustments in light intensity based on conditions such as availability of daylight or occupancy. Lighting is an application of light to realize both appeal and visual comfort. Nowadays, modern systems are able to reproduce intensities and pivot on...
Asynchronous event-triggered control (AETC) is a control strategy proposed for wireless networked implementations whose sensor nodes have limited energy supplies. Local thresholds allow the sensors to sample and to transmit local measurements independently of each other. AETC uses only one bit for each measurement transmission while still guarantees stability and predesigned performance of the closed-loop...
We examine the problem of a sensor communicating over a wireless channel to an actuator in order to control a plant that is perturbed by a random disturbance. By allowing the sensor to adapt online to the stochastic system state, we develop transmission policies with guarantees on average control performance and required average communication resources. More specifically we design policies with guarantees...
Recent advances in wireless technologies, MEMS and embedded systems enable the popular usage of wireless sensor networks(WSNs) and subsequently WSNs with actuating capability known as WSANs in various automation systems. This paper provides an implementation framework for wireless sensor and actuator network (WSAN) to support research experiments in personalized thermal comfort for existing multi-occupancy...
In this article we describe the implementation of remote monitoring and control for multiple and independent experiments, namely, ecosystem replication experiments. First by presenting the main concepts behind the system architecture, and ultimately its design, and secondly by discussing its implementation. The system makes use of IEEE 802.15.4 Standard for Wireless Communications, a BeagleBone Black...
This paper presents the design of an active flow control (AFC) system for commercial aircraft based on a dense wired/wireless sensor and actuator network. The goal is to track gradients of pressure across the surface of the fuselage of commercial aircraft. This collected information will be used to activate a set of actuators that will attempt to reduce the skin drag effect produced by the separation...
Wireless control systems for factory automation (FA) applications are subject to coexistence impairments, especially in license-free spectrum bands. Evaluating the coexistence impact requires the knowledge of appropriate characteristic parameters and the usage of a suitable simulation method. In this paper we propose an integral approach for the event-based simulation of wireless coexisting close-loop...
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