Simultaneous monitoring of motion ECG of two subjects using Bluetooth Piconet and baseline drift

Uninterrupted monitoring of multiple subjects is required for mass causality events, in hospital environment or for sports by medical technicians or physicians. Movement of subjects under monitoring requires such system to be wireless, sometimes demands multiple transmitters and a receiver as a base station and monitored parameter must not be corrupted by any noise before further diagnosis. A Bluetooth Piconet network is visualized, where each subject carries a Bluetooth transmitter module that acquires vital sign continuously and relays to Bluetooth enabled device where, further signal processing is done. In this paper, a wireless network is realized to capture ECG of two subjects performing different activities like cycling, jogging, staircase climbing at 100 Hz frequency using prototyped Bluetooth module. The paper demonstrates removal of baseline drift using Fast Fourier Transform and Inverse Fast Fourier Transform and removal of high frequency noise using moving average and S-Golay algorithm. Experimental results highlight the efficacy of the proposed work to monitor any vital sign parameters of multiple subjects simultaneously. The importance of removing baseline drift before high frequency noise removal is shown using experimental results. It is possible to use Bluetooth Piconet frame work to capture ECG simultaneously for more than two subjects. For the applications where there will be larger body movement, baseline drift removal is a major concern and hence along with wireless transmission issues, baseline drift removal before high frequency noise removal is necessary for further feature extraction.

Development of wearable monitor for human vital signs and environment information / 医疗卫生装备

Objective To develop a set of wearable device for dynamic monitoring of human vital signs and environmental information during exercise.Methods By using system integration mode,multiple sensor modules were integrated in the design of the device.A microcontroller was selected as the core of the hardware circuit.Then serial ports simulation was used to connect all sensors to the microcontroller.Wireless data transmission between the handset and the primary control module was implemented with Bluetooth component.Results The device behaved well in low energy consumption,small volume,low weight and data accuracy,and met the design requirements for wearable mobile monitoring device.Conciusion The device provides real-time data monitoring to the users so as to contribute to human health.

Componente para la lectura de datos por alas-HIS desde máquinas de anestesia / Data reader component by alas-HIS from anesthesia machines

El presente trabajo tiene como objetivo desarrollar el componente de comunicación entre máquinas de anestesia y el Sistema de Información Hospitalaria alas-HIS, que permita visualizar, almacenar y graficar en tiempo real la información obtenida de los equipos. El desarrollo está basado en una conexión entre la máquina de anestesia y una PC a través del puerto serie estándar RS 232. A partir de la lectura de los bytes recibidos desde el equipo, se propone una solución para decodificar los datos asociados a los indicadores de anestesia. Para lograr la solución es necesario conocer el protocolo de comunicaciones del equipo con el que se desea comunicar la aplicación. Se utilizó el lenguaje de programación Java y su API de Comunicaciones Serie para la comunicación con los dispositivos externos. Se utilizó Eclipse SDK V3.4.2 como Entorno de Desarrollo Integrado. Para generar los gráficos se utilizó la librería JFreeChart. El componente posibilitará visualizar, almacenar y graficar los datos obtenidos en tiempo real desde las máquinas de anestesia. Esto permitirá a los médicos una mejor comprensión de los indicadores, evitará errores humanos y ayudará a esclarecer casos médico-legales(AU)

This investigation aims to develop the communications component between anesthesia machines and alas HIS Hospital Information System, which will permit to visualize, to storage and to graphic in real time, the data cmoing from the equipment. The development is supported on any connection between the anesthesia machine and the PC through the standard serial port RS 232. From the data obtained of the equipment, it is proposed a solution to decode information related with anesthesia variables. To achieve the objective, is important to know the communications protocol of the hardware connected with the application. To implement it, the Java Programming Language and its Serial Communications API were used to connect external devices with the software. It was used Eclipse SDK V3.4.2 as development IDE. To get the graphics was used the JFreeChart library. The component will allow the visualizing, storage, and graphic representation of real time information from the anesthesia machines. To the physicians, it will permit better interpretation of anesthesia variables, thus avoiding human mistakes and helping to solve legal-medical cases(AU)

PC Interface and Control Technology of Foot Switch / 医疗卫生装备

Objective To realize foot switch long-distance control of PC for medical image acquisition. Methods The foot switch was connected with PC through RS232 DB9 port, and the software was programmed by Microsoft Visual C++6.0 on Windows 2000 operating system. Results Foot switch control of PC was successfully achieved in acquiring medical images. Conclusion The foot switch has the advantages of long-distance and foot control of PC. It not only saves manpower but ensures the accuracy and real time of images acquired. This method can be applied to image acquisition workstations for medical equipments such as CT apparatus, X-ray apparatus, Ultrasound apparatus, Endoscope apparatus and so on.

Collection of dynamic and real-time ECG signal by serial port of PC / 医疗卫生装备

Using a low-power CMOS 8-bit microcontroller ATmega8,ten-bit digital signals realizes analog-to digital conversion,and the converted signals are transmitted into the PC by RS232 serial port.This paper mainly introduces the hardware and software design.

Method to transfer physiological data through carrier-current communication / 医疗卫生装备

This article describes a method totransfer physiological data through carrier-current communication.The microcontroller measures the data of heartrate and body temperature and sends them through the serial port tothe carrier-current module implementing carrier-current communication.This method can be used totransfer physiological data through short distance less than200meters.

A Supplementary LED Alarm System for Siemens StreamLab / 医疗卫生装备

Objective To help the operator to find the alarm of Siemens StreamLab as quickly as possible. Methods Based on serial port control with VB 6.0 program, the system can catch the change of the control screen's special point and control the serial port to change the condition of the appointed pin to get a DC voltage to turn the LED on. Results The translation was implemented from screen icon alarm to LED alarm. Conclusion The LED alarm system can help the operator to observe the alarm of Siemens StreamLab promptly.