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Human monitoring is important in a wide range of applications and, most notably, in health management. Within the Active and Assisted Living (AAL) framework, human monitoring techniques have particular relevance: among AAL purposes is that of applying ambient intelligence paradigm to enable older adults or people with specific demands to live longer and independently in their homes, reducing the need...
In the diagnosis and evaluation of Parkinson's disease (PD) the most frequent motor symptoms are: resting tremors, bradykinesia, gait disturbances, and freezing. In recent years, various types of sensors have been used to objectively quantify these symptoms in PD patients. This work presents a comparative analysis of the main characteristics of sensors developed for the data acquisition and measurement...
Wireless Sensors Networks began to be highly appreciated during last decade because of the large variety of monitoring areas where they can be used: forests, medicine, cities, tools, people. In the paper, it has been decided to use Wireless Sensors Networks to monitor a forest and prevent forest fire. Three main functionalities of the application were identified such as real-time monitoring, alarms...
In this paper, we propose a wireless sensor network (WSN) designed for monitoring and risk management of landslides, where data collected by sensors are delivered through the network to a remote unit for online analysis and alerting. To ensure fast deployment, robustness in harsh environments, and very long lifetime, the sensor nodes and the communication protocol have been specifically conceived,...
Wireless sensor nodes (WSNs) are essential elements for today’s structural health monitoring (SHM). As the design technology for WSNs evolves, there have been continuous efforts to address challenges for WSNs such as short lifetime, high power consumption, and bulky volume. Recent trends show energy harvesting becoming a popular solution for extending the lifetime of WSNs; even implementing energy-autonomous...
With continuous miniaturization of electronic systems, mm-scale sensors are emerging as a future sensor system platform. Recent advancements in mm-scale sensor design is reviewed in this paper. A mm-scale sensor platform and its characteristics are presented and prototype implementation for diverse applications on recent literature are introduced.
Recent advances in Body Sensor Networks (BSNs) and ambient assistive technologies have facilitated the realisation of technology enabled assisted living. Integrating ambient sensors with wearable sensors will not only enable comprehensive health monitoring of the user, but by utilising network resources from ambient sensors, it could also greatly prolong the battery lifetime of wearable sensors, extend...
This study also proposes a solar power-based adaptive node-selection protocol mechanism for a wireless sensor network to increase the monitor performance of wireless sensors. Using renewable energy, such as solar power, to improve the efficiency of sensors in wireless sensor networks has become a popular topic. Equipping the sensors with solar-powered equipment signifies that the sensors no longer...
If wearable sensors are to play a significant role in monitoring the vital signs of hospitalised patients they need to be accepted by doctors and other healthcare workers. To gain this acceptance, evidence of their effectiveness needs to be demonstrated in clinical trials. In this pragmatic feasibility study four commercially-available, CE-marked sensors were combined into three monitoring systems...
A wireless sensor network for residential electrical energy consumption measurements is presented. The system integrates wireless sensors to measure the energy consumption of individual electrical circuits in a breaker panel. Each sensor is battery-powered and transmits its data using the 802.15.4 wireless protocol to a communication hub which forwards the aggregated data to a server via Ethernet...
This paper reports the case study about long-term sensor data accumulation of natural human behavior in a real home environment. Human behavior measurement in long term and in the real environment is difficult because of devices, software and system problems. We rented an apartment and introduced 4 sensor modules (pyroelectric sensor module, proximity sensor module, electric current sensor module...
This paper presents considerations of using wireless sensor networks for monitoring conditions within wind farms, taking into considerations the specific of such applications. In these scenarios, which are intended to cover a lot of ground or even operate in difficult radio environments with strong attenuation, the simple and direct communication between source and destination is not always possible,...
Taiwan, as indicated by a report, Natural Disaster Hotspots: A Global Risk Analysis, is one of the most dangerous places on earth. Emergency Events Database (EM-DAT) also points out that the frequency of disasters appears to be increasing. An NASA study shows that global warming upwards the formation of high clouds in tropics. This situation brings much severe storms and rainfalls. Just like a prophecy,...
This paper describes the design and use of an ambulatory monitoring device for recording urological response to intense physical activities of women. The system integrates a tri-axial accelerometer, a 360 degree biaxial inclinometer and a specially designed urine leakage detector(ULD) for sensing body motion and urine discharge. The device is small, lightweight and battery powered, and can be worn...
We propose a dynamic activity classification system with tri-axial accelerometer sensor using adaptation of user's postural orientation. In general, the sensor module is worn at a fixed position such as waist, head, wrist, thigh, and so on. However, in reality, the tilt of the attached sensor could be changed from time to time in actions such as sitting down, standing up, lying, walking or running...
The increasing ubiquity of mobile embedded systems has been matched by the evolution of a variety of wireless network standards and technologies. The major constraints of wireless embedded systems are limitations of communication bandwidth, processing capabilities, and battery power. Remote wireless embedded systems often act as sensors, which provide data to a certain community. The exchange of data...
Sink mobility has become an increasingly important requirement of various sensor network applications. Handling such mobile sink conditions brings new challenges to large-scale sensor networking. This investigation proposed a hybrid-structure routing protocol (HSRP) that combines the benefits of grid-based and cluster-based structures. Grid-based structure is designed to solve the cluster head selection...
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