ABSTRACT
OBJECTIVE@#To establish the system software of multi-parameter monitoring by embedded Linux kernel and Qt library.@*METHODS@#To determine the hardware system needed for the development of the system, carry out system Bootloader (Bootloader), Linux kernel, file system and Qt/Embedded (QtE) tailoring and transplantation and application development on the basis of the hardware system, and achieve the characteristic UI design.@*RESULTS@#The changes of physiological parameters were observed in real time to improve the stability and real-time performance of the whole system and increase users' experience with QtE.@*CONCLUSIONS@#The embedded Linux+Qt multi-reference monitoring system can improve the stability, operability and functionality of real-time monitoring and multi-physiological information, and has good extensibility and maintainability.
Subject(s)
Humans , Computers , Electrocardiography , Monitoring, Physiologic/instrumentation , SoftwareABSTRACT
A new embedded telemetry system for potentiometric sensors was developed. The system consisted of a transmitter unit, a receiver unit and a personal computer ( PC) . The transmitter unit included a current amplifier, a∑-Δanalog-to-digital converter ( ADC) , a microcontroller unit ( MCU) and a radio module. The receiver unit was composed of a radio module, a microcontroller unit and a serial-to-USB converter module. The receiver unit was connected to an upper computer via a universal serial bus ( USB ) . The embedded software written in C language controlled the signal acquisition and transmission. The computer software written in LabVIEW language was used for data storage and display. The range of the acquisition voltages was from-1. 17 V to +1. 17 V. In order to verify the accuracy and reliability of this system, a control experiment had been done with this system and a digital multimeter. Moreover, a response test of acidity changes had been done with the self-made H+ selective electrode. The results showed that the accuracy of this system could be up to 0. 1 mV and it had strong anti-noise ability. The square of the linear correlation coefficient of the response of the changes in pH values was 0 . 998 . The curve of the results measured by this system was consistent with that measured by the commercial electrochemical analyzer. The system was built with standard hardware components and the size of the transmitter unit was only 29 mm×14 mm×11 mm. It can be easily used for remote and real-time detection for the potentiometric sensor.
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To develop a low-cost, reliable, easy-to-maintain and practical instrument for protein purification. Some ultraviolet luminescent diode was used to provide 280 nm light source, and high-sensitivity S1336 photo-electric detector was employed for real-time monitoring of purified protein solution flowing through quartz cell to supervise the concentration of the protein. The instrument gave voice alarm and stopped working in case the protein concentration was less than the standard one. The lower SCM monitored the liquid level of the protein collecting cup and the position of loading arm through laser infrared distance sensor, so that a cup full of protein might be replaced by another empty cup. The instrument involved in Samsung S5PV210 embedded master computer, Wince6.0 operating system, Keil4.0 and VS2005. Trials proved that the instrument could perform real-time monitoring and curve display of dual-channel ultraviolet absorption, and could realize auto collection of 735 ml protein solution and up to 5-hour standby. The instrument developed has simple structure, high reliability and easy maintenance, and meets the desired require-ments.
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Obiective To solve the problem of charge evasion in medical equipment and improve the management of medical equipment and increase income of the hospital.Methods The control system was designed and used based onembedded system as real-time monitor in the medical equipment. Results This system can realize the real-time monitor of the medical equipment and improve the management of hospital. Conclusion The system resolves the problem of charge evasion effectually and increases the income of the hospital.
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Objective To develop a system for detection and diagnosis of osteoporosis by using quantitative ultrasound technology.Methods An ARM embedded system was used to measure the speed of ultrasound,the broadband ultrasound attenuation(BUA) and the stiffness.The speed of ultrasound mainly reflects bone structural features,BUA mainly reflects bone density,and stiffness can synthetically reflects bone intensity.Results Based on an ARM microprocessor,the whole system could diagnose osteoporosis through the parameters sent by ultrasound.Conclusion The system for ultrasonic diagnosis of osteoporosis based on ARM can achieve precise diagnosis in clinic by setting osseous parameters database of normal people in different age,weight and sex.
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Objective To develop an embedded system by using time-triggered system and ATmega128.Methods Making use of the minimum system structure of ATmega128,a multitask system,which could be implanted into AVR CPU,was designed based on the singlechip with 8 bits and 51series.Results Time-Triggered Embedded System kept the controlling precision on ms degree and ensured a sensitive and rapid response to keyboard input.Conclusion Software designed by Time-Triggered Embedded System has advantage in real time,so it is applicable to minitype real time control system.
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Objective To develop a suit of wireless real-time monitoring system for athletes which can gather,transmit and deal with athlete's vital bio-signals when they are training or healing,such as cardiograph,respiration,body temperature and SpO2.Methods The system consisted of monitoring terminal and data management module.The monitoring terminal schlepped by athletes consisted of data acquisition module and wireless transceiver module.It can gather and transmit physiological parameters.The data management module consisted of wireless transceiver module and embedded computer System.It can receive,deal with and display athlete's physiological parameters.Results The system met the requirement when it was located within the outdoor distance of 400 m or indoor distance of 50 m.Conclusion The system can monitor athlete's multiple physiological parameters whatever exercises the athlete is doing.It also adapts to healthy population when they are doing physical fitness exercises.
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In this paper, a remote monitoring system based on three tiers framework of ″Home-Community-Hospital″ for home monitoring is introduced. Its characteristics include multiuser concurrency operation, multiple testing parameter, real-time interactivity, dependable and secure data communication, high-speed link with database and load balancing. According to user's requirements, various applications can be developed to perfect medical information system based on B/S mode. A portable multiparametric tester based on embedded system has the functions of wireless data transmission and network communication, whose hardware and software designs are modularized.
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Objective To discuss the possibility of application of embedded system to medical equipment. Methods The principle and actuality of embedded system were explained, and a concrete example was presented. Results The application of the embedded system to medical equipment reduced the cost of medical equipment, and increased the realtime capability, reliability and longevity of medical equipment. Conclusion More and more embedded systems are being applied to medical equipment. Medical equipment based on embedded system have been developed ceaselessly.
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Objective To design a mobile device for patient information query.Methods Linux was used as operating system,and embedded SQL was used to access the database.Data transmission was realized by socket programming.Results The correctness of data access and transmission was proved by test,and the validity of the system was also confirmed.Conclusion Embedded system technology meets the need of mobile medical care.
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Objective To develop a portable and automatic quick screener for noise-induced hearing loss(NIHL),which is suitable for airman and ground crew.Methods Through using audio decoder chip VS1003 to achieve quick screener for noise-induced hearing loss and pre-exposing for special background noise.LPC2148 of ARM7-TDMI configuration was adopted as main controlling chip,and its software design was completed by multitask scheduler based on UCOS-Ⅱ,while the FAT system controlled the read-write to the files in SD card.The signal emergence,change in hearing class,frequency selection as well as records of subject reaction were automatically achieved.Results The system can produce stable signal of exact frequency according to GBZ49-2002 Diagnostic Criteria of Occupational Noise-induced Hearing Loss to output stability of the frequency and intensity of the audio signal,and the specific context of the noise pre-exposure function with screening of hearing impairment was achieved automatically.Conclusion Based on the great power of embedded system and VS1003,the portable and automatic quick screener for noise-induced hearing loss(NIHL) can be developed to carry out many functions,which has several features,such as simple structure,high integration,good stability and use of flexible etc.