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This paper presents the design, implementation and test of a watch with the capability to measure multiple physiological signals, such as photoplethysmography (PPG), electrocardiography (ECG), and some physiological parameters extracted from PPG and ECG. Based on the PPG and ECG signals, the pulse rate and heart rate could be extracted respectively. Moreover, the pulse transmit time (PTT) could be...
Because sensor's and electrical techniques is progressing, some physiological instruments, like pulse oximeter oxygen saturation, electrocardiograph, body temperature, and heart rate monitor, have been developed as the wearable apparatuses. Now, the electrical blood pressure monitor all uses a cuff to measure the blood pressure. If the electrical blood pressure monitor wants to become a wearable apparatus,...
This paper presents a wearable vital signs monitor at the ear. The monitor measures the electrocardiogram (ECG), ballistocardiogram (BCG), and photoplethysmogram (PPG) to obtain pre-ejection period (PEP), stroke volume (SV), cardiac output (CO), and pulse transit time (PTT). The ear is demonstrated as a natural anchoring point for the integrated sensing of physiological signals. All three signals...
Mobile electrocardiogram (ECG) monitoring systems have sprung up owing to the considerable interest attracted to wireless body area networks (WBAN). The long-term acquisition process for ECG produces large amount of data, which puts forward high demand on sensor lifetime. Fortunately, compressive sensing (CS) theory has been proved useful in energy saving by compressing signal in certain degree and...
This paper presents an acquisition circuit design integrated with commercial ICs and platform is built for the development of long-term ECG monitor. An efficient DCT-IV-based ECG compression algorithm with a higher Quality Score (QS) and a better Compressing Ratio (CR) is further embedded to reduce a great number of recording data in storage and transmission. To fairly evaluate the performance of...
Continuous and wearable heart monitoring is essential for early detection and diagnosis of cardiovascular diseases. We demonstrate a continuous, wearable, and wireless heart monitor that is worn at the ear. The device has the form factor of a hearing aid and is wirelessly connected to a PC for data recording and analysis. With the ear as an anchoring point, the heart monitor measures the ballistocardiographic...
This paper introduces a portable ECG monitor with USB host Interface. This system uses Microprocessor C8051F021 as its controlling core, and SL811HS as USB host Interface chip. Based on this hardware, the paper presents USB host specification stack, specification frame about USB Mass Storage and FAT file system so that the collected ECG signals can be stored in U-Disk without delay. In addition, the...
Obtaining vital signs non-invasively and in a wearable manner is essential for personal health monitoring. We propose the site behind the ear as a location for an integrated wearable vital signs monitor. This location is ideal for both physiological and mechanical reasons. Physiologically, the reflectance photoplethysmograph (PPG) signal behind the ear shows similar signal quality when compared to...
The computer-based portable devices lead our societies to the world of u-healthcare, so that people may monitor their heart rate outside hospitals. The paper proposes an ultra-wearable smart sensor system combines electrocardiogram (ear-lead ECG), tri-axial accelerometer, and GPS sensors to measure normal or elderly personpsilas daily activities. The ear-lead makes possible to measure ECG signals...
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