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In this paper we have developed a Telemedicine model with portable tool kit for remote patients to collect vital signs of patients which are used for Telemedicine services. This developed system is low cost, portable, and easily maintainable and can be integrated with any complex health system. We have used the GNU health where local doctors can communicate with a low cost terminal. Expert doctors...
Respiration is a vital activity for proper body functioning. Monitoring respiration not only aids in assessing our health but also helps in anticipating obstructive disorders such as sleep apnea and asthma. Typical systems for monitoring respiration such as nasal masks and chest band are cramped on a user's body. These are wired and require a user to be stationary when measurements are taken. Wireless...
We demonstrate a wearable electronic bracelet for monitoring of alcohol lifestyle through the detection of ethyl glucuronide (EtG), a metabolite of ethanol associated with alcohol consumption, from human sweat. The device leverages disposable nanoporous polymer substrates that easily wick small volumes of sweat over the sensors electrodes. A gold working electrode fabricated on the flexible substrate...
This paper presents a low power Wireless Safety Detection Sensor (WSDS) system to prevent fatal accidents with vehicles on construction sites. It helps providing increased safety for construction workers and eliminates back over accidents. The system employs three combined techniques which are the (1) 868 MHz radio frequency, (2) directional antennas, and (3) 40 kHz ultrasound waves. In order to secure...
Impedance measurement is widely used at present, it can be applied to clinical monitor such as blood leakage monitoring during hemodialysis. However, some patients have the symptom called “cold sweating” that may occur during hemodialysis treatment. It affects the results of impendence measurement. So to distinguish the difference between blood leakage and sweat at the same time, it could provide...
Sweat carries valuable information about our physiological and cognitive status. Measurement of various biomarkers in sweat provides a pathway for the assessment of fatigue or cognitive ability, disease, or even physical conditions such as blood glucose or hydration levels for individuals [1]. There has been a significant interest in developing a non-invasive, wearable sensor platform to facilitate...
Exergames are exercise-oriented games that offer opportunities to increase motivation for exercising and improving health benefits. However, Exergames need to be adaptive and provide accurate feedback for physiologically correct exercising, sustaining motivation and for better personalized experiences. To investigate the role of physiological computing in those aspects, we employed a repeated measures...
Energy-autonomous computing and sensing devices have the potential to extend the reach of computing to a scale beyond either wired or battery-powered systems. This emerging class of battery-free devices harvests all their energy from the environment and typically operates off of a few microfarads of local energy storage. This poses a unique set of challenges for system architects and application developers...
In the past decade there have been significant advancements in computer technology that have reduced the hardware form factor as well as increased energy efficient computing. Using network protocols for near field communication such as Body Area Networks (BANs), smaller and lighter computing units with attached sensors have transformed into wearable devices. These devices have served a plethora of...
This paper presents the results from actual measurements of cardiac activity acquired through the use of noninvasive sensors to detect Ballistocardiogram (BCG). The results show that it is feasible to unobtrusively monitor heart rate in non-standard settings such as waiting rooms or at school using simple chairs fitted with capacitive sensors. The selected sensors, based on electromechanical principles,...
This paper reports a simple and reliable electronic technique for the estimation of respiration rate (RR). Giant Magneto-Resistance (GMR) based sensors are employed to extract a plethysmograph signal from the subject. This signal is filtered and processed further through simple signal processing stages to obtain RR indication. The feasibility of the system has been studied on a prototype built and...
Cuff-less estimation of systolic (SBP) and diastolic (DBP) blood pressure is an efficient approach for non-invasive and continuous monitoring of an individual's vitals. Although pulse transit time (PTT) based approaches have been successful in estimating the systolic and diastolic blood pressures to a reasonable degree of accuracy, there is still scope for improvement in terms of accuracies. Moreover,...
Accurate and ambulatory measurement of blood pressure (BP) is essential for efficient diagnosis, management and prevention of cardiovascular diseases (CVDs). However, traditional cuff-based BP measurement methods provide only intermittent BP readings and can cause discomfort with the occlusive cuff. Although pulse transit time (PTT) method is promising for cuffless and continuous BP measurement, its...
In this work, we extract features from an under-the-mattress impulse radio ultra-wide band (IR-UWB) radar and a microphone, placed on the side table of the bed, to classify epochs belonging to normal sleep and those that contain an apnea event in them. Sleep apnea is the most common form of sleep related breathing disorder in adults with an estimated prevalance of 5–15%. The common diagnostic process...
One of the most life-threatening neural conditions is elevated intracranial pressure (ICP); it is associated with ischemia and poor short- and long-term outcomes. Currently, monitoring systems that accurately measure ICP are either highly invasive or inaccurate. This work explores the design and evaluation of an epidural intracranial pressure monitoring system for low-cost, minimally invasive detection...
Ultra-low power consumption is desired in most wearable biomedical devices. The event-driven based Analog-to-Digital converter (ADC) could be an excellent candidate for low power system because of the reduction in sampling points for biosignals. In the existing event-driven based ADC architectures, two or more high precision comparators are utilized to sample the input signal. In this paper, we propose...
This paper introduces a glasses-typed wearable system to detect user's emotions using facial expression and physiological responses. The system is designed to acquire facial expression through a built-in camera and physiological responses such as photoplethysmogram (PPG) and electrodermal activity (EDA) in unobtrusive way. We used video clips for induced emotions to test the system suitability in...
This paper describes a semantic modeling of the sensor data streams. In order to fulfill the requirements of the Wireless Sensor Networks and Wireless Body Area Networks data streams, for real-time vital signs monitoring, we designed a flexible architecture based on Multi-agent system. The system is able to collect and build sensor data streams according to the proposed semantic model. Different data...
It is crucial that cardiovascular disease patients pay close attention to their heartrate since the elevation of his or her heartrate may lead to critical conditions. Many efforts are made to help monitor heartrate by using wearables. However, these devices project inaccurate readings due to motion artifacts. We evaluate the accuracy of different smart watches in measuring heartrate, design our own...
We developed all-organic patches and devices that fit to skin. Devices for power generation from biofuel as well as transport of biologically relevant molecules into and from the body through the skin are presented. Integration of these technologies may lead to self-powered healthcare electronics on the skin.
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