Ultrasonic Power and Data Transfer Through Multiple Curved Layers Applied to Pipe Instrumentation

2019 ◽  
Author(s):  
Victor L. Takahashi ◽  
Alan C. Kubrusly ◽  
Arthur M. B. Braga ◽  
Sully M. M. Quintero ◽  
Sávio W. O. Figueiredo ◽  
...  
Keyword(s):  
Experimental Analysis ◽  
Data Transmission ◽  
Data Transfer ◽  
Transmission Rate ◽  
Experimental Models ◽  
Ultrasonic Power ◽  
Time Domains ◽  
Manchester Coding ◽  
Temperature And Pressure ◽  
Curved Walls

Ultrasonic power and data transfer through multilayered curved walls is investigated using numerical and experimental analysis. The acoustic channel used in this paper is formed by two concentric pipes filled with water, aiming for applications that involve powering and monitoring sensors installed behind the pipe walls. The analysis was carried out in the frequency and time domains using numerical and experimental models. Power and data were effectively simultaneously transferred through the channel. A remote temperature and pressure sensor was powered and interrogated throughout all the layers, and the power insertion loss of 10.72dB with a data transmission rate of 1200 bps using an amplitude modulated scheme with Manchester coding. The efficiency of the channel was evaluated through an experimental analysis of bit error rate (BER) with different values of SNR, showing a decreasing in number of errors comparing with the detection without Manchester coding.

scholarly journals Ultrasonic Power and Data Transfer through Multiple Curved Layers Applied to Pipe Instrumentation

Sensors ◽  
2019 ◽  
Vol 19 (19) ◽  
pp. 4074
Author(s):  
Takahashi ◽  
Kubrusly ◽  
Braga ◽  
Quintero ◽  
Figueiredo ◽  
...  
Keyword(s):  
Experimental Analysis ◽  
Data Transfer ◽  
Transmission Rate ◽  
Signal To Noise Ratio ◽  
Experimental Models ◽  
Ultrasonic Power ◽  
Time Domains ◽  
Manchester Coding ◽  
Temperature And Pressure ◽  
Curved Walls

Ultrasonic power and data transfer through multilayered curved walls was investigated using numerical and experimental analysis. The acoustic channel used in this paper was formed by two concentric pipes filled with water, aiming for applications that involve powering and monitoring sensors installed behind the pipe walls. The analysis was carried out in the frequency and time domains using numerical and experimental models. Power and data were effectively simultaneously transferred through the channel. A remote temperature and pressure sensor was powered and interrogated throughout all the layers, and the power insertion loss was 10.72 dB with a data transmission rate of 1200 bps using an amplitude modulated scheme with Manchester coding. The efficiency of the channel was evaluated through an experimental analysis of the bit error rate (BER) with different values of signal-to-noise ratio (SNR), showing a decrease in the number of errors compared with detection without Manchester coding.

Computational Fluid Dynamic of Date Transfer

2013 ◽  
Vol 477-478 ◽  
pp. 236-239
Author(s):  
Bao Yan Lu ◽  
Yan Zhou Li
Keyword(s):  
Fluid Dynamics ◽  
Heat Flow ◽  
Data Transmission ◽  
High Speed ◽  
Data Transfer ◽  
Fluid Dynamic ◽  
Supersonic Speed ◽  
Physical Fields ◽  
Temperature And Pressure ◽  
Derivation Process

A high-speed craft in the supersonic speed, ambient temperature and pressure would affect its structure, heat flow fluid-solid coupling simulation can quantify the effect. Due to physical fields had different heat flow fluid-solid coupling simulation, the data transmission was needed when the fluid dynamics to calculate the quantities of the import structure field. This paper given the derivation process and method of the physical fields data transfer, fluid dynamics to calculate the data in the simulation of structure field was implemented and to quantify the temperature field and stress field impacted on structure field.

scholarly journals Application of Fuzzy Logic to Cognitive Wireless Communications

2019 ◽  
Vol 8 (3) ◽  
pp. 2228-2234
Keyword(s):  
Fuzzy Logic ◽  
Data Transmission ◽  
Data Transfer ◽  
Transmission Rate ◽  
Wireless Data ◽  
Wireless Data Transmission ◽  
Radio Frequency Spectrum ◽  
Symmetric Key ◽  
Asymmetric Encryption ◽  
Encryption Method

This paper mainly studies data transmission Rate (DTR) in the of fuzzy logic in on Cognitive wireless modern communication improving the use of the radio frequency spectrum and the degree of intelligence of network and subscriber equipment, In this regard, The use of methods of cryptographic protection of information with a public key are convenient in that they do not require an additional communication channel for the exchange of a private key between the sender and the recipient However, they often rely on complex mathematical calculations and usually much less effective than c cryptosystems on a symmetric key. In this article we will focus on implementation of fuzzy logic methods for asymmetric encryption key. Fuzzy logic, in this case, is a problem solving methodology for data transfer that can find its application in various systems. In the present article deals with the encryption method using the theory of fuzzy sets technology of constructing cognitive wireless data transmission systems (WDTS) use of fuzzy logic and fuzzy controllers, Systems а demand of high quality transmission increasing of transmission data speed.

Hardware challenges with an anticoagulation strategy guided by detection of atrial fibrillation by an implantable loop recorder

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
S Mittal ◽  
D Brenner ◽  
S Oliveros ◽  
A Bhatt ◽  
M Preminger ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Data Transmission ◽  
Data Transfer ◽  
Implantable Loop Recorder ◽  
Loop Recorder ◽  
Bedside Monitor ◽  
Pill In The Pocket ◽  
Fundamental Requirement ◽  
Ecg Data ◽  
Clinical Strategy

Abstract Background A “pill-in-the-pocket” anticoagulation strategy, guided by ECG data from an implantable loop recorder (ILR), has been advocated as a clinical strategy. However, a fundamental requirement is the ability to reliably obtain daily ECG data from patients. Objective To determine the reliability of daily ECG data transfer from ILRs. Methods We evaluated patients implanted with an ILR in whom we sought to withhold oral anticoagulation (OAC) unless atrial fibrillation (AF) was detected. The ILR transmits data nightly to a bedside monitor. Once received, the data are sent to a central server. Over the course of a month, we tracked for each patient whether ECG data were received by the server. Results The study included 170 AF patients with an ILR where we planned to withhold OAC unless AF was documented. Daily ECG data were automatically transmitted and retrievable in only 36 (21%) patients. Two (1%) pts had not a single day of connectivity, 6 (4%) pts were connected <7 days, and 16 (9%) pts were connected <14 days. Wireless connectivity was lost for >48 hours in 89 (52%) patients (Figure). Most patients experienced multiple reasons for data transmission failure within the month. Conclusions To determine whether an ILR guided OAC strategy is feasible, reliable daily transmission of ECG data is a fundamental prerequisite. Current technology facilitated daily ECG data transfer in only 1/5 of patients. In the remaining, there was either extended loss of connectivity or no connectivity at all. A “pill-in-the-pocket” anticoagulation approach is currently difficult given existing hardware limitations. Funding Acknowledgement Type of funding source: None

Design of Data Transfer System Based on PCI Express Interface Applied in High-Speed Railway

2012 ◽  
Vol 229-231 ◽  
pp. 1543-1546
Author(s):  
Xiao Bo Zhou ◽  
Min Xia ◽  
Hai Long Cheng
Keyword(s):  
Data Acquisition ◽  
Data Transmission ◽  
High Speed ◽  
Data Transfer ◽  
Transmission Method ◽  
High Speed Railway ◽  
Pci Express ◽  
Data Acquisition Card ◽  
High Speed Data Acquisition ◽  
High Speed Data

To improve data transmission performance of the data acquisition card, a design of high-speed data transmission system is proposed in the thesis. Using FPGA of programmable logic devices, adopting Verilog HDL of hardware description language, the design of modularization and DMA transmission method is implemented in FPGA. Eventually the design implements the data transmission with high-speed through PCI Express interface. Through simulation and verification based on hardware system, this design is proved to be feasible and can satisfy the performance requirements of data transmission in the high-speed data acquisition card applied in high-speed railway communication. The design also has some value of application and reference for a universal data acquisition card.

The Intellectual Lighting And Data Transmission System based On RGBW Light Emitting Diodes

2021 ◽  
pp. 63-68
Author(s):  
Daniil S. Shiryaev ◽  
Olga A. Kozyreva ◽  
Ivan S. Polukhin ◽  
Sergey A. Shcheglov ◽  
Svetlana A. Degtiareva ◽  
...  
Keyword(s):  
Visible Light ◽  
Data Transmission ◽  
Light Transmission ◽  
Transmission Rate ◽  
Light Emitting Diode ◽  
Spectral Characteristics ◽  
System Component ◽  
Transmission Channel ◽  
Error Vector Magnitude ◽  
Light Emitting

The system of intellectual lighting data transmission via visible light is developed and manufactured. Spectral characteristics of a downlink which uses the red crystal of a RGBW light emitting diode for data transfer were studied. The DALI protocol-based radiation chromaticity control system which allows us to set different lighting scenarios with constant data transmission rate was developed. The radiation chromaticity range covers almost the entire colour gamut in the colour space. The system of high-frequency matching of system component impedances was developed and frequency characteristics of the suggested scheme were studied for development of the system. Optimal parameters of the signal for visual light communication such as carrier frequency, modulation type and band were determined. Observation of the constellation diagram which represents different values of the complex amplitude of the keyed signal in the form of a complex number on a quadrature plane (cosine and sine components of the carrying signal) and of fixation of the amplitude of the error vector magnitude (EVM) was selected as a method of study of the transmission channel quality. The value of EVM in the visible light transmission channel was significantly lower for signals with amplitude modulation than for phase-manipulated signals. When implementing different lighting change scenarios, radiation of other crystals of the light emitting diode crystals not used for transmission did not lead to increase of EVM by more than one percent.

scholarly journals Research on Fractal Characterization of Data Transmission Performance of Hard Disk

2018 ◽  
Vol 173 ◽  
pp. 03035
Author(s):  
Wei Jiang ◽  
Cuicui Ji ◽  
Yuntian Dai
Keyword(s):  
Fractal Dimension ◽  
Data Transmission ◽  
Transfer Rate ◽  
Data Transfer ◽  
Fractal Theory ◽  
Hard Disk ◽  
Hard Disks ◽  
Transmission Performance ◽  
Rotating Speed ◽  
Solid State Disks

The data transfer rate is the traditional criterion for evaluating the overall performance of a hard disk. In this paper, the data transmission performance of hard disk was characterized based on fractal theory. The traditional mechanical hard disks and solid state disks with different capacities and specifications were tested and the corresponding signal graph of data transfer was analysed for the calculation of fractal dimension D. The results indicate that the process of hard disk data transfer has fractal characteristics; the fractal dimension D increases with the increase of the average transfer rate and the rotating speed of mechanical hard disk. However, there seems no direct correspondence between the fractal dimension D and the capacity of the hard disk; the larger the floating range of data transmission, the greater value of fractal dimension D.

scholarly journals Laser technologies of data transfer in aquatic environment in the organization of underwater wireless communication networks

2021 ◽  
pp. 80-85
Author(s):  
В.Л. Мартынов ◽  
В.И. Дорошенко ◽  
Н.М. Божук ◽  
Ю.Г. Ксенофонтов
Keyword(s):  
Communication Networks ◽  
Optical Communication ◽  
Aquatic Environment ◽  
Communication Systems ◽  
High Speed ◽  
Data Transfer ◽  
Open Systems ◽  
Transmission Rate ◽  
Video Data ◽  
Optical Communication Systems

Решению вопросов, связанных с телекоммуникационным оборудованием, функционирующем в водной среде, в настоящее время уделяется особое внимание. На смену традиционным подводным системам обмена информацией в гидроакустических полях приходят открытые системы её оптической передачи и приёма, базирующиеся на лазерных технологиях. Это вызвано необходимостью трансляции с высокой разрешающей способностью видеоданных, среди которых, например, может быть либо визуальное отображение подводных систем в динамике, либо результаты мониторинга объектов подводной инфраструктуры в реальном масштабе времени, либо что-то другое с учётом требований Заказчика. Канал передачи такого большого объёма информации при условии ее считывания с задаваемым качеством должен иметь пропускную способность более 1 Мбит/с. Такую высокую скорость передачи невозможно реализовать в подводных гидроакустических системах, граница технических возможностей которых на превышает 10...50 кбит/с. В аналогичной ситуации при заданных параметрах канала связи частоты несущих оптического диапазона имеют порядок 1014 Гц, что обеспечивает динамический диапазон полосы пропускания в районе 1012…1013 Гц. С учётом условия квазимонохроматичности применение гидроакустических средств для передачи видеоданных становится проблематичным, так как техническая реализация такой задачи потребует слишком большого времени. С учётом сказанного, преимуществом подводных беспроводных оптических систем связи является их высокая широкополосность, которая обеспечит высокую скорость передачи данных. В статье обосновывается целесообразность использования открытых оптических системы связи для создания высокоскоростных подводных инфотелекоммуникаций, среди которых наиболее предпочтительными являются лазерные системы. Special attention is currently paid to the solution of issues related to telecommunication equipment operating in the aquatic environment. The traditional underwater systems for the exchange of information in hydroacoustic fields are being replaced by open systems for its optical transmission and reception, based on laser technologies.This is due to the need to broadcast high-resolution video data, among which, for example, there can be either a visual display of underwater systems in dynamics, or the results of monitoring objects of underwater infrastructure in real time, or something else, taking into account the requirements of the Customer. The transmission channel of such a large amount of information, provided it is read with a specified quality, must have a bandwidth of more than 1 Mbit / s. Such a high transmission rate cannot be realized in underwater sonar systems, the technical capabilities limit of which does not exceed 10 ... 50 kbit/s. In a similar situation, given the parameters of the communication channel, the carrier frequencies of the optical range are 1014 Hz, which provides a dynamic bandwidth range about 1012…1013Hz. Taking into account the condition of quasimonochromaticity, the use of hydroacoustic means for transmitting video data becomes problematic, since the technical implementation of such a task will take too long. In view of the above, the advantage of underwater wireless optical communication systems is their high broadband, which will provide a high data transfer rate. The article substantiates the expediency of using open optical communication systems for creating high-speed underwater information telecommunications, among which the most preferable are laser systems.

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