Abstract
Telemedicine has become an increasingly important part of the modern healthcare infrastructure, especially in the present situation with the COVID-19 pandemics. Many cloud platforms have been used intensively for Telemedicine. The most popular ones include PubNub, Amazon Web Service, Google Cloud Platform and Microsoft Azure. One of the crucial challenges of telemedicine is the real-time application monitoring for the vital sign. The commercial platform is, by far, not suitable for real-time applications. The alternative is to design a web-based application exploiting Web Socket. This research paper concerns the real-time six-parameter vital-sign monitoring using a web-based application. The six vital-sign parameters are electrocardiogram, temperature, plethysmogram, percent saturation oxygen, blood pressure and heart rate. The six vital-sign parameters were encoded in a web server site and sent to a client site upon logging on. The encoded parameters were then decoded into six vital sign signals. Our proposed multi-parameter vital-sign telemedicine system using Web Socket has successfully remotely monitored the six-parameter vital signs on 4G mobile network with a latency of less than 5 milliseconds.
Highlights
The new COVID-19 disease was first identified in China, at the end of 2019, and has been spread rapidly all over the world
(1) This paper presents a development of a real-time, low-cost, multi-parameter and easy-to-implement vital-sign telemedicine which is very suitable for the current situation of the COVID-19 pandemic
The device consists of three main components: a temperature sensor, analog-to-digital converter (ADC) and I2C communication
Summary
The ECG acquisition and signal-conditioning circuit are shown in Figure 1, consisting of 20 instrumentation amplifier, (ii) right-leg driven, (iii) low-pass filter and high-pass filter, (iv) 50 Hz notch filter and (v) offset-adjustable amplifier. The ECG acquisition and signal-conditioning circuit are shown, consisting of 20 instrumentation amplifier, (ii) right-leg driven, (iii) low-pass filter and high-pass filter, (iv) 50 Hz notch filter and (v) offset-adjustable amplifier. The circuit is immune to noise and is widely used to Commonly known as a biomedical amplifier, the instrumentation amplifier consists on OpAmps U1, U2 and U3. Any signal beyond this range will be considered as a noise Both a low-pass filter and high-pass filter are used to make sure that the signal being amplifier is only the ECG. Even though the low-pass filter and high-pass filter are used to ensure that only the ECG signal of which the frequency is between 0.01 and 100 Hz is amplified, the 50 Hz noise, which is mainly caused by line-voltage interference, can pass into the circuit. High precision, high stability and low power consumption, the OpAmps used in the ECG acquisition circuit will be military-grade OpAmps, where the resistor will be one percent error resistor and capacitor will be tantalum capacitor
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