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2. Петиция, направленная, чтобы запретить въезд блоку Дональда Трампа в Великобританию, данная петиция набрала 585 954 голосов (на 23.05.2016).
В результате хотелось бы отметить, что институт электронных петиций активно развивается во всех ведущих странах. Данное развитие обусловлено развитием Интернета и информационных технологий в целом, а также реализации демократических принципов, а именно - осуществление народом своей власти.
Литература
1. Портал Российская общественная инициатива. [Электронный ресурс]. URL: https://www.roi.ru/ (дата обращения: 23.05.2016).
2. О рассмотрении общественных инициатив, направленных гражданами Российской Федерации с использованием интернет-ресурса «Российская общественная инициатива»: указ Президента Российской Федерации от 4 марта 2013 г. № 183 // Собрание законодательства Российской Федерации, 2013. № 10. Ст. 1019.
3. Портал «We the people». [Электронный ресурс]. URL: https://petitions.whitehouse.gov/ (дата обращения: 23.05.2016).
4. Портал «E-pitition». [Электронный ресурс]. URL: https://petition.parliament.uk/ (дата обращения: 23.05.2016).
Advanced scheme cardiograph on ADS 1298 Shayakhmetkyzy D.1, Koishybayev D.2 Усовершенствованная схема кардиографа на ADS 1298 Шаяхметкызы Д.1, Койшыбаев Д. Н.2
1 Шаяхметкызы Динара / Shayakhmetkyzy Dinara — магистрант;
2Койшыбаев Даулен Нурланулы /Koishybayev Daulen — магистрант, кафедра сенсорики, факультет лазерной и световой инженерии, Санкт-Петербургский национальный исследовательский университет информационных технологий, механики и оптики, г. Санкт-Петербург
Abstract: this paper considers an improved form of apparatus designed to monitor vital signs of the patient. Necessary for development is to increase the efficiency of the computer systems of diagnostics and monitoring. Modern cardiograph is the main microcontroller for processing mixed analog and digital signals. With the aim of improving the accuracy of registration of the teeth of cardiosignal on the basis of three electrodes and the processing of received signals used microcontrollers Texas Instruments ADS 1298.
Аннотация: в работе рассматривается усовершенствованный вид кардиографа, предназначенный для отслеживания жизненных показателей пациента. Необходимым для развития является повышение эффективности компьютерных систем диагностики и мониторинга. В современном кардиографе основным является микроконтроллер для обработки смешанных аналоговых и цифровых сигналов. C целью повышения точности регистрации зубцов кардиосигнала на основе трех электродов и обработки полученных сигналов использовался микроконтроллер фирмы Texas Instruments ADS 1298.
Keywords: cardiograph, microcontroller, medical devices, flash-memory, signal processing. Ключевые слова: кардиограф, микроконтроллер, медицинские приборы, flash- память, обработка сигналов.
Introduction. Cardiovascular disease (CVD) remains the leading cause of death in the country and effective tools to reduce these statistics is not enough. It is necessary to the development of non-invasive technologies preclinical examination and personal monitoring of human health from the group of CVD risk. The current state of radio engineering and computing means is this possibility: portable cardiographs can monitor the patient's vital indicators.
Improving the quality of life of people is inextricably linked to the improvement of healthcare system. The main way of doing this is to develop a diagnostic of major diseases of the body systems that will detect the disease in its early stages and begin treatment. Necessary for this is to increase the efficiency of computer systems of diagnostics and monitoring of the cardiovascular and nervous
systems and the implementation of the developed methods and algorithms for processing of biomedical signals and images in the production of diagnostic equipment.
Cardiograph - meter registering the bioelectric activity of the heart. Today there are many types of cardiographs with different leads. Leads - a recording electrodes. For example, a distinction is made between analog or computer (digital), electrocardiography (ECG).
In today's cardiograph basic and most important element is the essential microcontroller. Texas Instruments the company has expanded its family of microcontrollers ADS 1298 for the treatment of mixed analogue and digital signals (Analog-to-Digital Signals - ADS). ADS 1298 microcontroller for biopotential measurement in medical devices such as portable electrocardiographs battery powered and Holter and wireless patient monitoring equipment [5, p. 222].
ADS 1298 is able to support one to five channels, which can significantly reduce the size, power consumption and total cost of medical scalable measurement systems. Each ADS 1298 device channel can be independently programmed to work with the special (different from the other) sampling rate and bandwidth. Effective 16 bit RISC ADS 1298 CPU architecture can significantly reduce code size and increase the signal processing efficiency compared with current 8 bit MCU [2, p. 42-43]. Modernization cardiograph scheme.
In order to improve the accuracy of registration teeth cardio on the basis of three electrodes and processing the received signals to a PC and then burn it to the SD card , you want to replace the existing cardiograph PIC16F873 microcontroller ADS 1298. The ADS 1298 microcontroller embedded flashmemory with the program and the data set of peripherals, the number of external pins.
How PIC and AVR microcontrollers, ADS sells RISC (Reduced Instruction Set Computer) ideology (of 27 basic commands). However, as opposed to the PIC, this series is based on the von Neumann (von Neumann) architecture, suggesting that the program memory and data memory are in the same address space. The main features of microcontrollers are discussed a wide range of integrated peripherals, high-performance processor and an extremely low power consumption, making them ideal for use in portable measuring industrial and biomedical devices [6, p. 3763-3767]. Improved built-in flash-memory.
Because the flash- memory costs recently was close to the cost of a single ROM (ROM), as well as due to the high flexibility inherent in the system with in-circuit programming (ISP), flash- memory de - facto standard in most modern microcontrollers. In most devices based on ADS 1298 microcontroller series currently chips with flash- memory is used for prototyping , and so for mass production. All flash- memory [4, p. 257-264].
ADS 1298 microcontroller operates all over the operating frequency range of supply voltages and current consumption.
Intelligent peripheral modules - all modules that are part of the ADS 1298, which are designed to meet the minimum software maintenance. For example, the ADC inputs are automatically scan, conversion hardware triggering and often direct access to the mechanisms of memory DMA. Such a set of hardware features, the CPU provides an opportunity to redirect resources to specific tasks without being distracted by the movement of data. This makes it possible to develop cheaper systems that require smaller software resources and consume less energy [3, p. 54-58].
Conclusion. Portable cardiographs widely used for continuous cardiac monitoring people suffering from cardiovascular disease. Based on the performance analysis ADS 1298 one can conclude that besides the obvious advantages in size in comparison with the analog part cardiographs it has relatively low power consumption even in an active mode, a high signal / noise ratio and dynamic range sufficient for cardiac monitoring tasks solutions. In addition, the intelligent microcontroller peripherals increase the speed of the software code execution due to its compactness.
References
1. Sergeenkov A. S., Bodin O. N., Ozhikenov K. A., Altay E. A. Povyishenie effektivnosti okazaniya ekstrennoy meditsinskoy pomoschi. Sbornik tezisov XII mezhdunarodnogo kongressa «Kardiostim» Sankt-Peterburg, fevral 18-20, 2016. P. 240.
2. Altay E. A., Popov A. M., Makesheva K. K. Usovershenstvovannaya shema kardiografa s ispolzovaniem mikrokontrollera MSP430. IV Vserossiyskiy kongress molodyih uchenyih, 2015. 1. P. 42-43.
3. Konturov S. V., Latfullin I. A., Teptin G. M. Sravnitelnyiy analiz pogreshnosti v analogovoy i kompyuternoy elektrokardiografii. Vestnik Aritmologii, 2014. № 13. P. 54-58.
4. Xu Xianhong. Research and design of 12-Lead Synchronization ECG Signal Detection and Analysis System, International journal of medical, pharmaceutical science and engineering, 2011. 5. P. 257-264.
5. Ozhikenov K. A., Altay E. A. Raspredelennaya kardiosistema. Sbornik tezisov XII mezhdunarodnogo kongressa «Kardiostim» Sankt-Peterburg, fevral 18-20, 2016. P. 222.
6. Kening Wang, Weizhao Zhang. Design of ECG Signal Acquisition System Based on DSP. International Workshop on Information and Electronics Engineering, 2012. 5. P. 3763-3767.
7. Chepnyh I. V. Modelipovanie elektpotehnicheskih ustroystv in MATLAB. SimPowerSystems and Simulink. 1-e izdanie, 2007. P. 288.
8. Avdieva D. K., Balohonova M. V., Demyanov S. V. Modelirovanie vliyaniya filtrov na signal EKG v sisteme Matlab. Sovremennyie problemyi nauki i obrazovaniya. 2012, 3. P. 105-112.
9. Varakin L. E. Sistemy svyazi to shumopodobnymi signalami. M.: Padio and communication, 2015. P. 284.
10. Drozdov D. V. Vliyanie filtratsii na diagnosticheskie svoystva biosignalov // Metodicheskie aspektyi: materialyi konferentsii. Moskva: izdatelstvo Altomedika, 2011. P. 75-78.
11. Mahesh S. H., Agarbala R. A. Design and implementation of digital FIR equiripple notch filter on ECG signal for removal of power line interference // Wseas transactions on signal processing, 2008. № 4. P. 221-230.
12. Durgesh Kumar Ojha, Monica Subashini. Analysis of electrocardiograph (ECG) signal for the detection of abnormalities using Matlab // International journal of medical, pharmaceutical science and engineering, 2014. № 2. P. 54-57.
Improving the accuracy of the identification of cardio using a filter bank Shayakhmetkyzy D.1, Koishybayev D.2 Повышение точности идентификации кардиосигнала с помощью банка
фильтров Шаяхметкызы Д.1, Койшыбаев Д. Н.2
1Шаяхметкызы Динара / Shayakhmetkyzy Dinara — магистрант; 2Койшыбаев Даулен Нурланулы /Koishybayev Daulen — магистрант, кафедра сенсорики, факультет лазерной и световой инженерии, Санкт-Петербургский национальный исследовательский университет информационных технологий, механики и оптики, г. Санкт-Петербург
Abstract: the paper deals with the identification and treatment of cardio using a filter bank. With the filter bank disclosed method suppression harmonic interference cardio. For interference suppression and identification of the main cardiographic complex filter bank is designed. Work performed by the most famous multi-tool MATLAB.
Аннотация: в работе рассматривается идентификация и обработка кардиосигнала с помощью банка фильтров. С помощью банка фильтров раскрыт метод подавления помех гармонике кардиосигналов. Для помехоподавления и идентификации основных кардиографических комплексов разработан банк фильтров. Работа выполнена с помощью наиболее известного многофункционального инструмента MATLAB.
Keywords: identification, treatment, cardiology, harmonic, filter bank.
Ключевые слова: идентификация, обработка, кардиосигнал, гармоника, банк фильтров.
In recent decades, actively developing pre-treatment technology of biological signals, enabling the identification of the functional state of the organism (FSO) person at an early stage of the disease. This may be the initial stage of myocardial infarction, atrial fibrillation, tachycardia. In such cases, especially important methods to identify even minor deviations from normal cardio [1, p. 105-112].
One of the major problems for cardio is a filtration system using filter bank. The use of filtering algorithms provides a clear-cut teeth and to identify the most important areas of the cardiac cycle [2, p. 69-77]. In solving this problem is the difficulty in choosing a filtration method to remove certain types of artifacts, as well as [3, p. 75-78] criteria optimization algorithms used. To identify undistorted electrocardiosignal filters with high precision on the level, it is necessary to develop a bank of filters to suppress interference from power lines.
