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This paper presents an efficient monitoring solution for greenhouses. The solution implements the Wireless Sensor Network (WSN) monitoring system and then expands the monitoring concept to an Internet of Things (IoT) solution, by employing 3G access, web services, database and a web interface for user interaction. The main advantage of this modular monitoring system relies on the fact that the End-Devices...
Wireless Sensor and Actuator Networks has become an important area of research. They can provide flexibility, low operational and maintenance costs and they are inherently scalable. In the realm of Internet of Things the majority of devices is able to communicate with one another, and in some cases they can be deployed with an IP address. This feature is undoubtedly very beneficial in wireless sensor...
The article deals with an assumption that application of advanced technologies in manufacturing firms brings them higher ability to face up to problems linked with economic crises. It means that manufacturing firms-users of advanced technologies should have the better economic results than manufacturing firms, non-users of advanced technologies. The assumption was tested on the base of results of...
Multivariate Statistical Process Control (MSPC) techniques require process stationarity as a main rule for design and monitoring. However, a critical process such as Boiler and Turbine-Generator units of Thermoelectric Power Plants, which is a multivariable complex system, features different types of non-stationary behavior and operational modes with constant changes of set points of key performance...
Man-in-the-Middle (MITM) attack enables an attacker to monitor the communication exchange between two parties by directing the traffic between them to pass through the attacker's machine. Most existing schemes for discovering MITM attack focus on detecting the mechanism used to direct the traffic through the attacker machine. This paper presents a new detection scheme that is based on matching the...
This paper proposes a charging scenario of a battery power bank constructed by a number of buck-boost type battery power modules (BPMs) in parallel. With associated power electronic converters, the BPMs in the power bank can be individually controlled. The charging scenario is programmed to fully utilize the available power from the dc source, and at the same time to perform charge equalization during...
Targeting the rapid development, with reduced complexity, of power converters control techniques, a field-programmable gate array (FPGA) based platform is proposed. The aim of the platform is to provide an effective support to the developer in the error-prone process associated to a traditional FPGA design flow. This work also enables remote hardware reconfiguration, and networking monitoring of power...
This paper proposes a conductance sensor and a procedure for real-time monitoring of micromaching processes. This procedure is based on a computationally efficient method to detect both the state of tool-workpiece contact dynamic and tool breakage. The measurement of electrical voltage drop is done by supplying an AC current through the contact impedance and this is the main input signal of the algorithm...
Mobility support is one of the main requirements in current wireless sensor networks (WSN), as WSN technology becomes mature and its range of applications gets wider. Due to the very nature of WSNs, along with their use in all sorts of Internet of Things (IoT) scenarios, it is frequent that sensor nodes, or even groups of sensor nodes, need to change their wireless point of attachment without losing...
In this work we propose the rather new approach to synthesize properties formulated in verification languages, in particular PSL, down to hardware level. Such flow can be useful especially for safety-critical applications to automatically generate runtime monitors at little additional design efforts. Existing assertion synthesis tools from both academia and industry are presented as well as evaluation...
Supervised learning has been applied in image processing system for object recognition, inspection and measurement. However the teaching-learning mode of supervised learning is not practical in real application, because it is impossible to teach a system all possible samples in one time. Therefore, incremental learning is considered to be a promising solution which supports the iteration of teaching-learning...
Stroke accidents affect a significant number of people per year all over the world. Sequels of these accidents usually affect the ability of the patients to perform daily life tasks. Rehabilitation plays a fundamental role in assisting those people to recover (to the extent possible). Nowadays, robotic systems are being increasingly used in this area. FISIOROB is one such solution being developed...
This paper focuses on the implementation of power electronics algorithms in control platforms based on DSP-FPGA. Today's power electronics technology demands high power computation with high speed interfacing at the same time. The most popular configuration is a DSP for the former and a FPGA for the latter. The main goal of this work was to develop a generic control system for power electronics application,...
An online fault detection method for synchronous generators is presented. This method provides efficient and reliable fault detection using Principal Component Analysis (PCA). The traditional PCA technique is modified to enable multivariate modelling using the machine's phase voltages, excitation current and shaft voltage. Hotelling's statistic and the model residuals are used to detect incipient...
The estimation of remaining useful life applied to industrial machinery and its components is one of the current trends in the advanced manufacturing field. In this context, this work presents a reliable methodology applied to ball bearings health monitoring. First, the proposed methodology analyses the available vibration and temperature data by means of the Spearman coefficient. This step allows...
DC-link electrolytic capacitors are used in single phase solar PV inverters to suppress second harmonic and switching voltage ripples. Electrolytic capacitors are less reliable than other components of PV system. Degradation of these capacitors affects the performance of the system. Reduction in capacitance and increase in equivalent series resistance (ESR) due to ageing increases ripples in dc voltage...
Interoperability between shop floor devices and upper layer systems is a key challenge for enabling Internet of Things in industrial applications. Standardized protocols such as IPv6, CoAP, and XML can be used to address this issue. Widely used XML-based technologies such as SenML, EEML, OPC-UA as well as others rely on XML to be able to support a wide range of sensor and actuator applications. However,...
Most communication companies in developing countries use diesel generators in addition to grid supply to power their base stations because the grid power supply is unreliable. Remote monitoring of these sites can reduce the amount of time spent on routine site visits especially for dieselrefills. This paper presents a design and implementation of a remote diesel-level monitoring system using wireless...
In modern drive applications fed by voltage source inverters, monitoring systems are of advantage to reduce the maintenance costs and prevent outages. The proposed insulation monitoring method detects stator insulation defects by evaluating the current's transient response after step excitation by the inverter. Due to fast switching of the voltage source inverter at high output voltage dv/dt rates,...
ALFA (Absolute Luminosity For ATLAS) is one of the sub-detectors of ATLAS (A Toroidal LHC Apparatus). The ALFA system is composed by four stations installed in the LHC tunnel 240 m away from the ATLAS interaction point. Each station has a vacuum and ventilation system, movement control and all the required electronics for signal processing. The Detector Control System (DCS) provides control and monitoring...
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