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To study the effect of microgravity on peripheral oxygen saturation (SpO ) in rats, tail-suspended rats were applied to simulate microgravity environment. SpO and arterial oxygen saturation (SaO ) were measured by pulse oximeter and arterial blood gas analyzer (ABGA) respectively on the 14th day, 21st day and 28th day in tail-suspended group and control group. Paired -test shows that SpO was significantly lower than SaO in tail-suspended group on the 14th day ( < 0.05), the 21st day ( < 0.05) and the 28th day ( < 0.01). The ANOVA results shows that modeling time had significant effect on SpO value but no effect on SaO value in tail-suspended group. These results indicate that pulse oximeter may be not suitable for oxygen saturation test in microgravity environment.
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<p><b>OBJECTIVE</b>To improve the radio frequency (RF) transmission distance of the wireless terminal of the medical internet of things (LOT), to realize the real-time and efficient data communication, the intelligent relay system based on STM32F103 single chip microcomputer (SCM) is proposed.</p><p><b>METHODS</b>The system used nRF905 chip to achieve the collection, of medical and health information of patients in the 433 MHz band, used SCM to control the serial port to Wi-Fi module to transmit information from 433 MHz to 2.4 GHz wireless Wi-Fi band, and used table look-up algorithm of ready list to improve the efficiency of data communications.</p><p><b>RESULTS</b>The design can realize real-time and efficient data communication.</p><p><b>CONCLUSION</b>The relay which is easy to use with high practical value can extend the distance and mode of data transmission and achieve real-time transmission of data.</p>
Subject(s)
Humans , Algorithms , Communication , Internet , Medical Informatics , Microcomputers , Radio Waves , Wireless TechnologyABSTRACT
This paper discusses the research of a digital hearing aid based on DSP TMS320C5416,in which a series of prevalent algorithms in digital hearing aid are realized including dynamic range compression,frequency compression,noise-reduction,directional multi-microphone,etc.This project provides some experience for national development of the hardware and software of the digital hearing aid based on DSP.
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This paper introduces a wireless remote electro-thermometer system composed of the temperature measurement module, the transmitting module, the receiving module and the computer terminal. The temperature measurement module adopts Texas Instruments' (TI') MSP430 ultra low-power 16-bit microcontroller as the unit for acquisition and control. MSP430 being the controller, the wireless transmitting module and the receiving module are based on TI's TRF6900. The receiving module uses RS232 interface to send the temperature data from the temperature measurement module to the computer terminal.
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Objective To research the calibration methods of the electrosurgical analyzer which is applied in calibration for production and use of electrosurgical generator. Methods Two methods were put forward,the first one is indirect measurement,the second one is comparing with congeneric device,and these two methods in theory and practice to process real data were analyzed. Results The device with the methods are tested and analyzed,and then,the test error or uncertainty of electrosurgical analyzer is used in analyzing and processing. Conclusion The test error or uncertainty of leakage current and peak factor can also get by these two methods,and these methods could be used as calibration method in production and usage of electrosurgical generator or method for tracing the source.
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An audio communication system in field medicine based on wireless transmission is introduced.It mainly comprises MSP430 ultra low-power and 16-bit microcontroller of Texas Instruments and wireless audio streamer nRF24Z1 of Nordic VLSI in Norway.The system realizes the call-and-talk communication between doctors and patients conveniently in one-to-many way in good audio quality and flexible mobility,so that doctors can be timely informed the state of an illness by using it.
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This paper introduces the design and implementation of a wireless mobi le medical equipment system based on GPRS. GRPS modem is applied to the wireless integration of digital medical equipments with RS232 interfaces into Internet. Thus, such of the system as the linkage with medical monitoring center and the w ireless mobile communication function are all fulfilled.
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The basic principle,characters and applications of I 2 C bus protocol are introduced in this paper.Its application to implantable e lectrical stimulator is also described based on MAX5630,a DAC chip produced by M AXIM Corporation.
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Objective To design and develop a kind of SpO2 detection and analysis system based on LabVIEW. Methods Pulse signal process and SpO2 calculation were achieved by designing a control system based on TI Company's MSP430FG439 MCU and using the digital signal process and graphic controls of the LabVIEW software. The design project and the realization way were given out by discussing the software of LabVIEW. Results The system could acquire, display and process pulse signal and calculate SpO2. Conclusion The system carries out a new way to design medical monitor equipment. Furthermore, it provides a shortcut for special analysis of the SpO2 and pulse signal in clinic.
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Objective To study a feasible technology plan for information communication between doctors and patients.Methods Based on three-layer B/W/S and Windows2003 Server,MS SQL Server was used for database administration.The Apache Tomcat 5.5 was adopted as Web server and Web services were realized by using JSP(Java Server Page).Results Health care information was collected and integrated in medical information platform of clinical department which was connected into Internet directly.The information platform established communication way between doctors and patients and it had functions for chief complaint,diagnosis,reservation and revisit.Conclusion Communication between doctors and patients are realized.
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The paper introduces the ventilator tester based on ADuC812 which can test the main signals including the flow and pressuere of ventilators.With the analysis of the tester and its applications to several ventilators available,it proves reliable and suitable for clinical use.
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Objective To explore the feasibility and significance of using ventilated technology of oxygen after unchaining in assistant breathing equipment cycled with mixed gases of helium and oxygen.Methods After giving out the relative increment matrix for keeping the system steady,the paper introduces the detail methods for the control of oxygen concentration after unchaining coupling in assistant breathing equipment cycled with mixed gases of helium and oxygen.Results It shows that the control of oxygen concentration after unchaining coupling is a vital technology in assistant breathing equipment cycled with mixed gases of helium and oxygen.
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Objective To develop a kind of mobile Bluetooth temperature sensor with removable measurement and wireless transmission.Methods The device was designed with technology of high precision sensor and newly developed Bluetooth base on MCU MSP430 as control unit which could apply in real time measurement,data storage,transmission and emergency alarm.Results The problem that at the scene of many cables in clinical care of the devise was resolved.Any devices with Bluetooth sensor can receive temperature data.Conclusion The traditional work mode is changed by the Bluetooth device and reduces the workload of nursing staff,which provides a new solution for integration of Bluetooth and clinic care technology.