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This paper describes the design and implementation of a wireless electrocardiographic monitoring system for Android devices. The system consists of a device that will act as a server located in the patient and another device that will act as a client. The server incorporates the stages of protection against external defibrillators, acquisition and transmission of the signal through a Wi-Fi module (ESP8266 NodeMCU), and the client receives, processes and displays in real time the electrocardiogram (ECG) signal in a smartphone or an electronic tablet, with Android operating system. In addition, it calculates and displays the RR series from ECG and two diagnostic indicators with a delay of less than two seconds. The experimental tests of the prototype with seven volunteers showed the excellent performance of the proposed protocol for the application layer of the system and the fulfillment of the established design requirements and criteria. The system allows registering the ambulatory ECG within a range of up to 15 m and is an excellent alternative to increase the quality of life of the elderly or other people who present problems for locomotion (temporary or permanent). [ABSTRACT FROM AUTHOR]

The current paper shows the development of a circuit prototype based on PSoC technology, which is used as a signal processing stage in an electronic tongue device with the ability to discriminate and classify samples of raw milk. The electronic tongues consist of electrochemical sensors array based on conductive polymers, a signals processing stage responsible to signal data conversion, and a data processing stage based on multivariate statistical methods (principal component analysis and artificial neuronal networks). To develop the processing signals stage, it is show the development and operation of some blocks involved, where the central element is a PSoC 5 microcontroller. PSoC is an integrated circuit composed of analog and digital blocks into a configurable core, with the use of PSoC microchip, it is possible to develop a portable and small electrochemical device. Some experiments are shown to test the operation of each component of PSoC, and experiments will be made to test the bluetooth communication between the prototype and smartphone. To test the operation of the system, the results obtained will be shown with different experiments with the prototype. Those results will be compared with those of other results obtained in a commercial electrochemical device. To show a preliminary behavior of android application, some experiments will be shown using the smartphone and the prototype. [ABSTRACT FROM AUTHOR]

Copyright of Journal Educational Innovation / Revista Innovación Educativa is the property of Instituto Politecnico Nacional and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)