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An autonomous Internet of Things (IoT) wireless sensor network (WSN) powered by a solar energy harvester with low power electronics is presented in this paper. The power supply is a critical challenge for IoT sensors as many of them normally have limited lifetime due to the battery with limited capacity used. The WSN system, sensor node electronics, and the energy harvesting techniques are all configured...
This paper aims at presenting an experimented low power Internet of Things architecture, that could be integrated to underwater monitoring systems like Autonomous Underwater Vehicles for wireless underwater sensing. The proposed hardware architecture of the sensor nodes is based on an ultra-low-power Flash Micro-controller that takes measurements from water sensors, and synchronizes the network by...
Within the electric mobility concept, the transportation sector found the possibility to reduce the greenhouse gas emissions. Although the reduction of emissions is a target for EU, the transportation sector is mainly dependent on fossil fuels like petroleum or natural gas. Nowadays, the most used power source for land and water vehicles propulsion is the internal combustion engine, but in the latest...
Lithium-ion batteries are characterized by having very good performance in terms of efficiency, lifetime, and self-discharge, which allowed them to become the major player in the electric vehicle applications. However, they were not able to totally overcome the EV range anxiety. Thus, research is carried out nowadays to develop batteries with even higher gravimetric energy density, which should allow...
This paper presents a demonstrator of a Lithiumion battery for automotive applications. A printed circuit board consisting of sensors, local memory elements, a digital signal processing unit and a communication interface is integrated into a Lithium-ion cell case. We demonstrate the mechanical and electrical feasibility of addressing and real-time monitoring of single Lithium-ion battery cells using...
In this paper, 150W multi parallel LDC system, different from integral type LDC system of the conventional electric vehicle is proposed. The high efficiency LDC system is designed by reducing the losses of the magnetic element and semiconductor element by lowering the rated capacity through power sharing. Also, LDC is designed as active clamp forward converter to reduce the loss caused by the reset...
A CMOS fully-integrated Coulomb counter based on a voltage-to-frequency conversion algorithm that measures the state-of-charge (SoC) of a high-density Li-ion battery is presented. Low-side current sensing with a polarity detector is used to monitor the charging and discharging battery current. It is designed in 0.35 μm CMOS process and occupies an active area of 0.01mm2. Except for the sensing resistor...
With the increase of pollution in urban areas, in the same time, within the majority of crowded cities, the circulation infrastructure for bicycles, trotters, mopeds, hover boards, etc. has been developed for both classic and electric versions, various models of street furniture for parking and protection being designed and built. To charge the batteries of the these electric vehicles we present within...
In this study, we have developed a basic system of an ingestible core body thermometer powered by a gastric acid battery. A custom integrated circuit (IC) with voltage boosting, coding, modulating and transmitting functions was prototyped. A small gastric acid battery based on a pair of Mg and Pt thin-film electrodes was also fabricated by microfabrication technology. Charge storage in a storage capacitor...
A parameter estimation study is reported here to estimate the temperature-dependent internal resistance of a lithium ion battery that is connected to the state of its health. A simple equivalent electrical circuit model was used for this purpose that is nonlinear both in its variables and in its parameters. Parameter sensitivity analysis showed that under conditions of constant charging/discharging...
In the last time, the power supplies issues of electronic circuits had become an important issues, especially for mobile devices. The use of classical or Li-ion batteries in the industry, mainly utilized in storage systems, is not a viable solution because these devices, after 2–3 years, lose their ability to store electricity and the materials employed are polluting, even banned in some countries...
This paper deals with a cost effective wireless EV battery charger which integrates the simplest quasi-resonant soft switching pulse modulated inverter with a newly developed SiC-MOSFET. In the first place, the operating principle of a wireless EV charger using a class-E single-ended inverter which is cost-effective for affordable price and simple is described. This type of wireless resonant EV charger...
Real-time monitoring system of effluent discharge of Sewerage Treatment Plant (STP) has received attention and interest in the context of providing an accurate and continuous waste water quality information by following the minimum criteria of water quality as applied in the Department of Environmental (DOE) and Indah Water Konsortium (IWK) practice. The system not only can be monitored, but also...
Pushed through an increasing amount of renewable energy sources in the German grid, the fluctuation in energy generation rises. Therefore, a balancing system which takes the grid stabilizing role is necessary. Depending on the time periods of the chosen sales channels, different storage systems can be used. For short and middle time spans an electrochemical system like a battery energy storage system...
The paper deals with the transformation of the existing bus shelters for the public transport into smart systems equipped with Wi-Fi stations, USB chargers and Air Quality Control Station. The proposed smart shelters are renewable energy producer since they are equipped with PV modules. The location of the most suitable bus shelters is defined by solar irradiation maps based on a GIS tool. Four solutions...
This paper introduces a combined temperature and displacement sensor for new measurements of physical parameters which can inform multi-physics based models of Li-ion batteries. These flexible sensors can be placed directly on the cell to measure intercalation effects which can improve battery state estimation. The sensors were characterized on individual Panasonic cells and subsequently, packaged...
In order to meet the needs of safety, durability and reliability for the battery management system, the data monitoring and diagnosis for the battery management system platform is researched and developed. The platform based on the CAN bus technology, in the VC++6.0 development environment, implement the battery management system running state monitoring, fault diagnosis, parameter configuration,...
This paper proposes the two-stage control structure which is composed of battery management unit and central management unit in order to improve the monitoring and management technology of integrated power supply in power system. The paper presents a battery management system (BMS) design scheme. We designed its hardware circuit and verified in the laboratory conditions. The results show that the...
Solar direct-drive (SDD) appliances including refrigerators and freezers are widely used for storing vaccines and other medical products in locations without reliable mains electricity. The capacity of the solar array powering an SDD appliance must be large enough to provide sufficient compressor runtime during periods of reduced solar irradiance. SDD appliance solar arrays therefore create useful...
Museum environmental monitoring is an important issue for the artifact conservation. Many solutions have been proposed to tackle this problem, but the museum constraints prevent an easy application in several cases, especially if the monitoring has to be performed in museums where an environmental control system has been already installed. This paper describes a simple though powerful solution, which...
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