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Firefighters are typically exposed to dangerous environments where a sense of vision, auditory, and direction is blocked by smoke, dusts, or flame. Some environments are even "infra-less"; power and communication infra is destroyed. Any commands and signals from outside are unavailable, so recognizing directions and making decisions are usually difficult. To protect and save lives of firefighters,...
Over the last few years, sensational improvements in the smart device ecosystem and a gradual evolution in wireless sensing systems have converged into the Internet of Things (IoT), which enables interconnection between various devices and provides intelligent services over the Internet. In the current IoT technology, a number of mobile smart devices have become attractive candidates as local mobile...
In this paper, a novel stress measurement system using electrocardiograph (ECG) in massage chairs is presented. Unlike most of the existing stress monitoring systems, the proposed ECG monitoring system consists of handhold electrodes. We propose two algorithms to reduce main problems of dry and noncontact electrodes from the coupling between the skin and electrodes. Those algorithms are thresholding...
Smart devices including smartphones are spreading rapidly. Smart people having smart devices want to use smartly. In order to do this, they try to experience after searching and downloading, installing a variety of APPs. These efforts are unnecessary and a waste of time and results in making them unwisely. Now you do not have to search the required APP. Our scenario tells you the useful APP. For example,...
This paper proposes a software framework and hardware architecture to exchange the binaries and profiles from smartphones to IoT devices and reprogram devices with smartphones. This scheme, when included in a system of smartphones interconnected with locally deployed IoT devices in wired or wireless manners, can be used to implement a practical updater.
This paper proposes a progressive and hybrid target detection algorithm to improve the results of two PIR processing algorithms featured by window energy and alarm duration. This algorithm reduces environmental noises alerting false alarms and provides a reliable performance for moving-object detection outdoors. The suggested algorithm supports light-weight target detection for a resource-constrained...
By interacting with external sensors, smartphones can gather high-fidelity data on the surrounding environment to develop various environment-aware, personalized applications. In this work we introduce the sensor virtualization module (SVM) which virtualizes external sensors so that smartphone applications can easily utilize a large number of sensing resources. Implemented on the Android platform,...
A PIR sensor is widely applied for motion sensing applications such as automated door control, camera triggering and automated on-off control of lamps. In particular, it is usually used to detect the existence of moving objects in an indoor environment. However, in outdoor, false alarms come about due to environmental changes and other sources. Therefore, it is difficult to provide consistent detecting...
Due to the development and proliferation of ubiquitous technologies and services, various sensor network applications are being appeared on the stage. The needs for algorithms requiring complex signal processing with a high-performance processor such as digital signal processor are also increased. However, it is difficult to use such processor for the low-power sensor network operating with a battery...
Due to the proliferation of technologies and services related with wireless sensor network, various sensor network applications are being appeared on the stage and a lot of sensor network testing technologies are being studied. However, most of testing systems or testbeds have objective for test and evaluation of sensor network protocols. For testing sensors and evaluating signal processing algorithms,...
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