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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...
Energy consumption is a major concern in battery powered wireless sensor networks (WSN). For that reason there is a strong demand for the evaluation of power consumption of nodes in a wireless sensor network during its development phase. This evaluation can be done in early design stages by using simulations and models, but there is also the need for an evaluation in a real setup. This paper presents...
In this paper, the problem of dispatching the operation of a distribution feeder comprising a set of heterogeneous resources is investigated. In particular, the main objective is to track a 5-minute resolution trajectory, called the dispatch plan that is computed one day before the beginning of operation. During real-time operation, due to the stochasticity of part of the resources in the feeder portfolio,...
The goals of this research are to design a 3D printed environmental data logger while considering sensor packaging space constraints and to implement a smart power consumption system for increased endurance. The product is sealed for harsh environmental conditions per IP65 standard as well as for impacts. In this paper, we share our electronics packaging design approach for a mobile sensor suite so...
This work is concerned with the development of a wireless low-power wearable system to be used for multi-lead ECG monitoring. Potential applications can range from sport and fitness to healthcare. The paper aims to present the architecture of the system and its performance, along with in-vivo results achieved with carbon based smart textiles.
In this work, a home power management system is proposed to minimize electricity cost and reduce high peak demand while maintaining user comfort. The system is composed of smart electrical appliances, which are divided into three subclasses as uncontrollable, semi-controllable and controllable, power units (photovoltaic system, grid, battery), communication network and a main controller. At the beginning...
This paper presents the development of a portable adaptive environmental data logger with an emphasis on low-power operation. The developed device is based on a programmable system-on-chip (PSoC), records temperature and relative humidity values, and saves the data on a microSD memory card. The main characteristics of the device consist in low power consumption, small dimensions and adaptive operation...
An environmental radiation detection system was developed using a low-power radiation-sensing module, IEEE 802.11 (Wi-Fi) connection module, solar controller and battery. The data from the module were sent by Wi-Fi HTTP(S) clients operation, then collected by MySQL server using PHP: Hypertext Preprocessor uploading code as shown in Fig.1. The operation of the system was periodic (sleep and wakeup...
The Internet of Things (IoT) is a rapidly emerging application space, poised to become the largest electronics market for the semiconductor industry. IoT devices are focused on sensing and actuating of our physical environment and have a nearly unlimited breadth of uses. In this paper, we explore the IoT application space and then identify two common challenges that exist across this space: ultra-low...
We developed an EV conversion kit for light truck to promote “pure (battery)” commercial EV. Operation of EV trucks can be arranged according to the capacity of battery installed generally because light trucks for deliveries inside cities are used in limited areas, fixed routes and scheduled operation time. Light delivery trucks are mostly used in food industry to make small amount deliveries and...
In this paper, fuel cell — based hybrid power supplies for household appliances are addressed. The profile of residential power consumption is evaluated during working, non-working days in both summer and winter periods. The worst-case load power demand is therefore highlighted. A 5kW Nuvera PowerFlow proton exchange membrane fuel cell for household appliances is tested. On the basis of the characterization...
This paper presents a conditioning system for an amorphous silicon germanium (a-SiGe:H, B) microbolometer array for detection of heat sources in low-power sensing systems. It mainly consists of an amplification and switching circuit that adapts the small signal provided by the resistive microbolometer cell connected in a Wheatstone bridge to a voltage signal which can be easily read by a microcontroller...
This paper introduces the basic components of submersible temperature logger system and the relationships between the various modules. According to the principle of low power, a Single Chip Microcomputer with idle mode and stop mode is necessary. Through the analysis of the temperature measurement and the data storage, the optimal strategy for power management can be found. For the purpose of energy-saving,...
In order to satisfy the chamber pressure testing requirements of small and medium caliber artillery, the miniature internal electronic pressure gauge is designed, which adopted low power technology and miniaturization technology and storage testing technology. This paper describes the working principle and the hardware design process of the gauge, and introduces the work state of the gauge. The gauge...
Instance and temperature-dependent leakage power variability is already a significant issue in contemporary embedded processors, and one which is expected to increase in importance with scaling of semiconductor technology. We measure and characterize this leakage power variability in current microprocessors, and show that variability aware duty cycle scheduling produces 7.1× improvement in sensing...
Power monitoring system for robot is necessary to operate robot safely and efficiently. For this reason, the present study aims to propose, to design and to evaluate intelligent battery system based on CANopen standard as reusable power monitoring system.
While the gravimetric energy density is continuously growing up by the battery manufacturers, the embedded systems designers have to consider a lot of issues to fulfill the power consumption requirements. Wireless sensor nodes (WSN) are typically equipped with a battery, sensors and communication devices. The use of WSN and their design benefits from the development of the communication protocols...
In this paper.a wireless sensor network node hardware and software implementation is introduced based on the top grade 8-bit AVR micro-processor ATmegal28L and 2.4 GHz wireless communication chip CC2431. To avoid the shortage of TinyOS, an improved task schedule flow is introduced. Some sensors are used to provide necessary sensing ability. Proper protocols are adopted in MAC and network layers to...
Class D amplifiers are becoming the most feasible solution for embedded audio application. However, distortions due to the non-linear nature of switching stage are the main drawback for this amplifier topology. This paper discusses the design and implementation of high fidelity audio class D using sliding mode control scheme. This design method proves to be a cost effective solution for industrial...
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