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In the future Internet of Things, many common household devices will have communications interfaces added. We investigate energy-efficient design options for such communications interfaces in the Internet of Things through the example of a simple stock control application that may be commercially implemented. We have measured the power consumption of several popular wireless interfaces - 433 MHz module...
A Wireless Sensor Networks (WSNs) should be autonomous, self-sustainable and able to function for several years. However, due to the slow advancement in battery technology, battery power continues to be a limited resource in wireless sensor communication and thus electric energy storage remains to be an important issue. The aim of this work is to conduct a study on battery life estimation for wireless...
Recently, the technology of Home Energy Management System (HEMS) has expanded for the purpose of reducing energy consumption. This paper presents the development of a smart plug with a wireless Zigbee sensor for measuring power consumption of electrical appliances in the HEMS. Experiments were carried out to evaluate the power consumption of a wireless sensor node in a smart plug using only Zigbee...
In wireless applications, power consumption has been, and will be, one of the important characteristics when designing any wireless device. This is the case especially in sensor networks where a single sensor may be functioning, hopefully for very long time, without external power source. Generally, the architecture complexity reduces the battery life, but the performance increases with complexity...
Due to the large increase in the use of wireless technologies in indoor scenarios, it is necessary an efficient planning aim to decrease the power consumption and minimize the interference. In this work, the evaluation of received power in an indoor ZigBee scenario has been presented with the aid of in house 3D Ray Launching code, empirical simulations and a large set of measurements. The results...
With the improved processing power, graphic quality and high-speed wireless connection in recent generations of mobile phone, it looks more attractive than ever to introduce networked games on these devices. While device features and application resource requirements are rapidly growing, the battery technologies are not growing at the same pace. Networked Mobile games are a class of application, which...
This paper presents a prototype vision-enabled sensor node based on a commercial vision system of reduced size and power consumption. The wireless infrastructure for the deployment of a distributed smart camera network based on these nodes is provided by commercial motes. The smart camera, based on a low-power bio-inspired processing scheme, enables in-node image processing and vision tools. This...
Wireless Sensor Networks (WSNs) have been widely discussed in many applications. But a key design challenge is to solve power consumption, the reliability of radio communication and self-organizing of network. This paper proposes a design scheme of wireless sensor networks node architecture, builds a computer monitoring platform for experimenting with several of these nodes and designs a flexible...
Network enabled digital technology increases the connectivity of consumer devices within the home for the purpose of remote control and monitoring of network enabled devices. Such dynamic control scheme for multiple legacy IR controllable digital consumer electronics appliances increases power consumption and system complexity. In this paper, we present a wireless sensor node SoC with a profiled power...
For the application of wireless sensor network technology in an energy self-sufficient condition monitoring appliance, we propose a new hybrid network topology to combine the advantages of the ZigBee standard with the need for lowest power consumption when applying an energy harvesting solution for a subset of the sensor nodes. For a research project on a wireless condition monitoring system, we developed...
Power consumption now becomes the most important challenges when design distributed wireless sensor networks (WSN). There are several limits in the process of designing a WSN, in which the lifetime of a network should be taken into consideration. The lifetime could depend on the battery device and the protocols as well. In this paper we introduce a new protocol which can do better in power management...
Adopting MSP430 ultra-low power 16-bit single-chip microcomputer as the core of heat meters, Pt1000 matching platinum resistance as temperature measurement sensor, non-magnetic meter as the hot water flow measurement sensor, the micro-power testing of heat consumption in the heat exchange circuit and wireless reading meter combined with ZigBee and GPRS are realized here. ZigBee node module uses high-performance...
This paper outlines the design and development of a low-cost, small-footprint wireless sensor capable of sampling and transmitting sensory data at frequencies more than 6000 Hz. This sensor has been designed and developed in-house using off the shelf components and open source software for container integrity monitoring. The paper presents details of the various refinements that have been carried...
Wireless body-area sensor networks (WBSN) are a key component of e-Health solutions. Many different physiological parameters can be monitored and collected continuously by wearable wireless sensors with high accuracy, low power consumption and limited cost. In this work we focus on WBSN for real-time biofeedback applications. In this domain the real-time nature of I/O data streams is of critical importance...
This paper presents a real world case of implementing a sensor network for fulfilling the requirements of gas meter application. We propose a hierarchical network, which includes the functionalities such as receiving, transmitting, routing, auto-reconfiguring, scheduling, and deep-sleeping under the stringent requirement of power consumption. We are currently conducting tests on this system and collecting...
A kind of transmission line temperature on-line monitoring system based on ZigBee is presented in this paper. The principles, standards and application advantage of ZigBee wireless communications technology are discussed. The design of hardware and software are discussed detailedly. The monitoring system works steadily, its size is small, cost is low, and the power consumption is very low. This system...
With the continuous development of technology, it gives a new type system of coal mine safety based on ZigBee technology. Using the characteristics of wireless sensor networks and the mature communication technologies of CAN BUS, it implements real-time monitoring and intelligent warning for underground environment and production parameters. This system is equipped with a low power ARM processor chip...
Recently, several papers for reading meters remotely using RFID/USN technologies have been presented. In the case of wireless water meters, there has been neither commercial product nor paper. In this paper, we describe the design and implementation of wireless digital water meter with low power consumption. We use magnetic hole sensors to compute the amount of water consumption. The meter of water...
The wireless world is shrinking and so is the size of all electronic wireless devices which is aggressively pushing the chip manufacturers to reduce the size and power consumption of their IC's. This work presents a similar case wherein all the blocks of a FEM are tightly integrated on a single die measuring 1500 times 1350 um2 using GaAs E/D p-HEMT process and packaged in 3 times 3 times 0.7 mm3...
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