| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 6.12 MB | Adobe PDF |
Authors
Advisor(s)
Abstract(s)
Nos últimos anos tem-se visto a aplicação crescente das tecnologias da comunicação na área da saúde. Tendo em conta esta tendência surgiu a ideia de aplicar estas mesmas tecnologias para desenvolver uma Rede de Sensores Wireless baseada num eletrocardiógrafo aliado a um protocolo wireless. A aplicabilidade desta rede passar por diversas aplicações como a monitorização de pacientes a partir de suas casas ou para desportistas recolherem dados das suas atividades desportivas com a finalidade de melhorar as suas performances.
O sinal ECG, o sinal originado pelo coração, é captado à superfície da pele. O circuito
proposto constituído por cinco módulos com as suas funções específicas, sendo eles: um
módulo de pré-amplificação diferencial, um módulo do circuito de referência da perna
direita, um módulo de filtro passa-alto e um módulo conjunto de um filtro passa-baixo e um
amplificador de ganho elevado. De seguida o sinal analógico é convertido para digital, através do ADC12 presente no microprocessador da Texas Instruments CC430F6137, e enviado através de uma antena de rádio-frequência fazendo uso do protocolo wireless da Texas Instruments, o SimpliciTI, desta forma espera-se adquirir e visualizar o sinal de ECG. Neste trabalho o sinal
de ECG poderá então ser visualizado no monitor do computador recorrendo ao Access Point C1111 para receber os dados e utilizando o programa Processing para os demonstrar. O sistema proposto seria ainda constituído por outro módulo que baseado no eZ430-Chronos, mas não chegou a ser desenvolvido.
Como resultados finais, conseguiu-se efetuar corretamente a aquisição digital de dados e a
transmissão destes. No entanto o circuito de tratamento do sinal, não f sinal analógico de forma correta.
In the last years, we have seen an increase in the application of telecommunications technologies in the healthcare area. Following this trend, came up the idea of applying these same technologies to develop a wireless sensor network based on a electrocardiograph allied with a wireless protocol. This network could then be used to monitoring patients at their home or to sportsmen could collect data of their physical activities to enhance their performances. The ECG signal is originated by the heart and captured at the skin’s surface. The proposed system is formed by five modules each one with specific functions, they are: a differential amplification module, a driven right leg circuit module, a high-pass filter and a low-pass filter combined with a high gain amplifier module. The analog signal e digitalized through the ADC12, located in the Texas Instruments microprocessor CC430F6137, and is sent through an RF antenna using the wireless Texas Instruments protocol, the SimpliciTI, with that we hope to acquire and visualize the ECG signal. In this paper, the ECG signal will be visualized in a computer’s monitor using the C1111 Access Point to receive the data and using the Processing software to show them. The proposed system was constituted by a third module based in the eZ430-Chronos but was not developed in this paper. The final results we were able to make the data’s digital acquisition and transmition. However the circuit responsible for the signal treatment was not able to acquire the analog signal correctly.
In the last years, we have seen an increase in the application of telecommunications technologies in the healthcare area. Following this trend, came up the idea of applying these same technologies to develop a wireless sensor network based on a electrocardiograph allied with a wireless protocol. This network could then be used to monitoring patients at their home or to sportsmen could collect data of their physical activities to enhance their performances. The ECG signal is originated by the heart and captured at the skin’s surface. The proposed system is formed by five modules each one with specific functions, they are: a differential amplification module, a driven right leg circuit module, a high-pass filter and a low-pass filter combined with a high gain amplifier module. The analog signal e digitalized through the ADC12, located in the Texas Instruments microprocessor CC430F6137, and is sent through an RF antenna using the wireless Texas Instruments protocol, the SimpliciTI, with that we hope to acquire and visualize the ECG signal. In this paper, the ECG signal will be visualized in a computer’s monitor using the C1111 Access Point to receive the data and using the Processing software to show them. The proposed system was constituted by a third module based in the eZ430-Chronos but was not developed in this paper. The final results we were able to make the data’s digital acquisition and transmition. However the circuit responsible for the signal treatment was not able to acquire the analog signal correctly.
Description
Keywords
Electrocardiógrato wireless Tecnologia de comunicação à saúde Electrocardiograma Monitorização de sinais fisiológicos