An Open-Source Hardware Acquisition Platform for Physiological Measurements

Castro-Garcia, Juan A.; Molina, Alberto; Merino-Monge, Manuel; Gómez, I.

doi:10.1109/jsen.2019.2933917

Cited by 14 publications

(22 citation statements)

References 58 publications

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“…A cheaper alternative to these devices is to assemble them. For example, using Arduino, it is possible to de-velop an activity monitoring device based on an IMU or implement a shield to register electrocardiography (ECG) [88].…”

Section: Discussion Of Low-cost Solutionsmentioning

confidence: 99%

A Study on Physical Exercise and General Mobility in People with Cerebral Palsy: Health through Costless Routines

Molina

Merino-Monge

Castro-García

et al. 2021

IJERPH

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Sedentary behavior (SB) is a common problem that may produce health issues in people with cerebral palsy (CP). When added to a progressive reduction in motor functions over time, SB can lead to higher percentages of body fat, muscle stiffness and associated health issues in this population. Regular physical activity (RPA) may prevent the loss of motor skills and reduce health risks. In this work, we analyzed data collected from 40 people (20 children and teenagers, and 20 adults) who attend two specialist centers in Seville to obtain an up-to-date picture regarding the practice of RPA in people with CP. Roughly 60% of the participants showed mostly mid/severe mobility difficulties, while 38% also had communicative issues. Most of the participants performed light-intensity physical activity (PA) at least once or twice a week and, in the majority of cases, had a neutral or positive attitude to exercising. In the Asociación Sevillana de Parálisis Cerebral (ASPACE) sample test, the higher the International Classification of Functioning, Disability and Health (ICF), the higher the percentage of negative responses to doing exercise. Conversely, in the Centro Específico de Educación Especial Mercedes Sanromá (CEEEMS), people likes PA but slightly higher ratios of positive responses were found at Gross Motor Function Classification System (GMFCS) levels V and II, agreeing with the higher personal engagement of people at those levels. We have also performed a literature review regarding RPA in CP and the use of low-cost equipment. As a conclusion, we found that RPA produces enormous benefits for health and motor functions, whatever its intensity and duration. Costless activities such as walking, running or playing sports; exercises requiring low-cost equipment such as elastic bands, certain smartwatches or video-games; or therapies with animals, among many others, have all demonstrated their suitability for such a purpose.

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Section: Discussion Of Low-cost Solutionsmentioning

confidence: 99%

A Study on Physical Exercise and General Mobility in People with Cerebral Palsy: Health through Costless Routines

Molina

Merino-Monge

Castro-García

et al. 2021

IJERPH

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“…An Arduino Uno, programmed using library BSP [3] at 256 Hz of sampling frequency, has only been used for data acquisition. The ECG circuit was presented in [4], with electrodes placed following the Einthoven lead II schema. The PPG is formed by an TCRT100, a high-pass filter with a cut-off frequency of 0.7 Hz, a low pass filter of 28.2 Hz, and a total gain of 100.…”

Section: Methodsmentioning

confidence: 99%

Study of Blood-Pressure Measurement Using Noninvasive Methods

González-Pena

Castro-García

Molina

et al. 2021

The 4th XoveTIC Conference

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The correct diagnosis of high blood pressure is important to avoid cardiovascular diseases. In this work, we propose a low-cost noninvasive blood-pressure measurement unit composed of a photoplethysmograph and an electrocardiograph. It is based on pulse transit time measurement, thus performing nonocclusive measurement. To test the effectiveness of this parameter, a total of five subjects were measured, verifying their effectiveness at all times.

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“…LSRec 6 is a multi-thread, cross-platform software (Figure 1), based on a previous work 7 , developed using Java technology (version 1.7) 8 . Its main features include: 1) Real-time capacity: Any data acquisition systems must guarantee an adequate response time to avoid data loss and high latency.…”

Section: Lsl Recorder Designmentioning

confidence: 99%

“…Different tests can be performed in the same study and LSRec allows details to be added like, for example, difficulty level during the analysis of the cognitive load from arithmetic activities [40], [24], or certain device settings such as the value of the reference resistance [7], which may change among subjects, when transforming voltage to conductance in electrodermal activity [3]. Thus, extra information about experimental settings is sometimes necessary for further data analysis.…”

Section: ) Adding Experimental Detailsmentioning

confidence: 99%

An Easy-to-Use Multi-Source Recording and Synchronization Software for Experimental Trials

et al. 2020

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A typical routine in many scientific studies consists of recording data from devices and identifying which segment of data corresponds with an experimental interval. However, many current applications have been designed to obtain and save data from one single device, and synchronizing data with the markers that delimit the test phases can be difficult. To address this issue, we have developed LSRec, which is based on Lab-Streaming Layer, a C++ library that allows data synchronization. LSRec is an easy-to-use, open-source, multi-platform, recording system developed on Java that can save data from several devices at the same time, while maintaining synchronization with the experimental phase markers. It supports three explicit sync methods: the first uses one-integer-channel input Lab-Streaming Layer streams. The others use TCP/UDP socket messages and allow any existing software that generates sync markers through TCP/UDP messages to be used under the same conditions. In LSRec, the markers are saved together with input data, facilitating the process of linking data with test stages. A prerequisite for recording software is to guarantee suitable timing performance, with no data loss and an easy user interface. These features were assessed for LSRec, with no data loss detected for 20 hours (25 sessions). We evaluated performance by measuring timestamp deviations for sync marker and input data. The sync methods exhibited an average of deviations of around −34µs (which is more than acceptable, e.g., in studies involving living beings), whereas the absolute value of deviation for one-channel data was lower than 40µs. Finally, we assessed the system's usability with the technology acceptance model 3 survey (6 volunteers). Subjects saw the software as useful, and intended to use it in the future. In conclusion, LSRec is a useful tool for those who need to record data from multiple sources, and maintain synchronization with experimental phases with low delay.

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An Open-Source Hardware Acquisition Platform for Physiological Measurements

Cited by 14 publications

References 58 publications

A Study on Physical Exercise and General Mobility in People with Cerebral Palsy: Health through Costless Routines

A Study on Physical Exercise and General Mobility in People with Cerebral Palsy: Health through Costless Routines

Study of Blood-Pressure Measurement Using Noninvasive Methods

An Easy-to-Use Multi-Source Recording and Synchronization Software for Experimental Trials

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