9762 papers found
This paper presents the design and implementation of CAN (Controller Area Network) nodes as part of the Climate Control Systems. The proposed Climate Control System is developed as following of the main characteristics of the CAN protocol in data transfer and of the new generation smart transducers key characteristics in order to rich the requirements concerning the indoor air quality (IAQ) in cars park.
The settling-tube measurement technique is implemented by an experimental setup developed and tested for low-cost automated sand granulometry. The measurement is based on monitoring very small pressure variations created by samples of sand as they settle down in a water-filled cylinder. The pressure variations are monitored by low cost air-pressure differential transducers in an appropriate experimental setup which monitors air pressure variations caused by water pressure variations. It is shown that this low-cost automated approach manages to calculate properly size distribution and other...
Renewable energies such as wind power are becoming more and more widespread, but the reliable operation of future energy supply structures, with high share of distributed generation and renewable energy sources, is an important and highly complex task, due to the output power fluctuation of the renewable energies that may cause excess variation of voltage or frequency of the grid. The availability of information about wind direction and speed is an important information in order to control, or to predict, the generated output power of large wind farm. In this paper, the planning, the...
Several applications require for a distributed measurement system able to measure the same or different parameters at different points in a wide area. Distributed systems based on smart web sensors represent the best solution to many different measurement problems. One of the main disadvantages of monitoring systems based on smart Web sensors is the difficulty to have a complete access to all data because they present a closed approach to interact with them, while Web Services are adopted in order to give a standard approach in developing a Service Oriented Architecture. In this paper the...
This paper presents new routing protocol designed for use in AMR and AMM systems using powerline communication (PLC) for data collecting and network control at their last mile. First part of the paper describes the AMR and AMM systems and the reasons for their implementation. Further the narrowb and powerline communication as relatively simple way for data transfers at the last mile is shown and briefly described. Power-line channel characteristic implies a need of a network layer protocol implemented in the PLC nodes for such large-scaled narrowband PLC networks. In the next part simple...
In this study, daily measures of three water quality and quantity parameters from one monitoring Telemetric Stations (T.S.) were examined for trend. ”PERSEAS” Research Team in cooperation with ”Public Power Corporation” (DEH) of Greece, installed, operates and maintains four ”R.E.MO.S.” (Remote Environmnetal MOnitoring System) T.S., near the plant of ”Kardia” & ”Notio Pedio” mines in Western Macedonia, Greece. The two of the T.S., monitor the stagnant surface waters in the bottom of the mines while the other two, monitor ground water in specific well positions. The statistical sample of each...
The smart metering system is used for the remote measurement of measurands for a purpose of billing, and to process and transmit measurement results. Generation and transmission of measurement information by electric impulses has already been used at summarizing billing meters where the base meter is equipped with the impulses generator which directly or indirectly emits impulse to a master summarizing meter. The application of more developed remote meter reading systems has intensified in the last decade of previous century. Today, most of distribution companies in Europe use remote meter...
Computer tomography is well known term in a medical area for many years. Nowadays the computer tomography starts to be better known also in areas of mechanical, automotive, mechatronic, electric and electronic engineering. With this technology non-measurable parts can be measured and assemblies can be controlled without destruction or dismounting. This paper deals with application of computed tomography in area of electrical engineering products inspection.
The consumption of fossil fuels derived from petroleum presents a significant impact on environmental quality. Air pollution in big cities is, probably, the most visible impact resultant of petroleum derivatives combustion and credited almost all to the transport sector. This sector relies almost exclusively on liquid hydrocarbons leading to an emission of massive amounts of CO 2 with the associated greenhouse effect. Ethanol from sugarcane can contribute positively in the improvement of the environment with the reduction of the use of fossil fuels and of CO 2 emissions. The goal of this...
The work presents a multi-sensing system based on a dual microcontroller architecture associated with temperature, conductivity and turbidity measurement. The sensor design, implementation and calibration and the multi-sensing system embedded processing and interfacing represent important part of the work. Embedded software was developed for the PIC18F4520 microcontroller using the MPLAB C Compiler for 18MCU from Microchip while the software for data communication, data logging and graphical representation of the WQ data was developed in LabVIEW.