other methods of protection and future apparatus requirements
mcmillan, a. (1998). electrical installations in hazardous areas
... selection of apparatus with protection concepts appropriate to gas/vapour/mist and air risks 16 Other methods of protection and future apparatus requirements 16.1 Acceptance of technical requirements ... to the source of release and these other parameters 2.5.1 Gases, vapours and mists The methods of defining a risk of the presence of an explosive atmosphere for gases, vapours and mists are highly ... of electrical apparatus for dust risks 7.5 Apparatus construction Standards 7.5.1 Zone and/ or Zone compatible apparatus for gases, vapours and mists 7.5.2 The marketing situation in respect of...
- 678
- 961
- 0
iec 60092-375 ship board telecommunication cables and radio-frequency cables - general instrumentation, control and communication cables
... Areas and Composition of Conductors of Insulated Cables Flame-retardant Characteristics of Electric Cables Guide to the Calculation of Resistance of Plain and Tinned Copper Conductors of Lowfrequency ... 1: General Requirements and Measuring Methods 96- : 189- : 228: 332: 344: Low-frequency Cables and Wires with P.V.C Insulation and P.V.C Sheath, Part 1: General Test and Measuring Methods Nominal ... Conductor The conductor shall consist of seven strands of plain or tinned annealed copper uniform in quality and free from defects, each strand having a nominal diameter of: - 0.30 mm for a conductor...
- 28
- 400
- 3
dye, n. (2000). radio frequency transistors - principles and practical applicat
... over the frequency band of interest Slope is defined simply as the difference in gain at the high and low end of the frequency band of the amplifier Flatness, on the other hand, is defined as the ... offered in a wider variety of choices and, thus, present additional problems in device selection The major distinctions are in voltage of operation, frequency of operation, and output power Other ... larger and larger (higher and higher power), and is designed to operate at higher and higher frequencies, the result is a continual decrease in the input and output impedances of the device Think of...
- 317
- 504
- 1
Advanced Radio Frequency Identification Design and Applications Part 1 ppt
... publication of which they are the author, and to make other personal use of the work Any republication, referencing or personal use of the work must explicitly identify the original source Statements and ... automatic identification, asset tracking and security surveillance As barcodes and other means of identification and asset tracking are inadequate for recent demands, RFID technology has attracted ... second section of the book focuses on new and advanced applications of radio frequency identification The second section starts with one of the most common applications of RFID – privacy and product...
- 20
- 409
- 0
Advanced Radio Frequency Identification Design and Applications Part 2 potx
... the use of printed electronics, especially printed silicon electronics, which is out of the scope of the work in this chapter Cole et al (2010) give more details of the printed electronics and its ... al 12 Advanced Radio Frequency Identification Design and Applications (2005) The task of optimising the factor of θ is out of the scope of the work in this chapter Hence, it is not discussed ... constant, B = bandwidth of the receiver, NF = noise factor of the receiving equipment, T = absolute reference temperature used in the definition of the noise factor In the case of an RFID reader...
- 20
- 423
- 0
Advanced Radio Frequency Identification Design and Applications Part 3 pptx
... (1/d)4 and the gain of the reader and tag antennas In other words, the Read Range of RFID system is proportional to the fourth root of the reader transmission power PEIRP Operation modes of passive ... structure Since the pioneering work of Mandelbrot and others, a wide variety of application for fractals continue to be found in many branches of science and engineering One such area is fractal ... scaling factor of r = 1/3 and rotation angles of θ = 0°, 60°, -60°, and 0° There are four basic segments that form the basis of the Koch fractal antenna The geometric construction of the standard Koch...
- 20
- 523
- 0
Advanced Radio Frequency Identification Design and Applications Part 4 pot
... aim of this paper is to merge the meander line and meandered-slot structure of the RFID tag antenna in order to obtain a good performance of compact, broadband and conjugate impedance matching Meantime, ... a function of W1, respectively Figures 8(a) and 8(b) present the real and imaginary part of the input impedance as a function of W2, respectively Following the same idea, Figures and 10 present ... matching with only the real part of the input impedance Figures 12(a) and 12(b) present the real and imaginary part of the input impedance as a function of the length of the stub l, respectively The...
- 20
- 499
- 0
Advanced Radio Frequency Identification Design and Applications Part 5 pptx
... The length, diameter, and number of turns of the antenna are denoted by H, D, and N, respectively The diameter of the antenna wire is denoted by d A comprehensive treatment of this antenna has ... radiation resistance of the small loops; and Rl, the ohmic resistance of the antenna wire XL and XC are the inductive and capacitive reactances, respectively The exact expressions for XL and XC will be ... 3.9 and 3.6) At N = and N = 15, XC and XL are in good agreement with each other As a fall, agreement of XC and XL are well Thus, Eq (3.14) is confirmed to be useful 87 Design of a Very Small Antenna...
- 20
- 599
- 0
Advanced Radio Frequency Identification Design and Applications Part 6 potx
... power of the Eθ and Eφ components NMHA impedance-matching methods 4.1 Comparison of impedance-matching methods For the self-resonant structures of very small NMHAs, effective impedance-matching methods ... thickness is T, and the size of the metal plate is M The spacing between the antenna and the metal plate is S The equivalent electric and magnetic currents are I and J, respectively Eθ and Eφ correspond ... Tap feed Fig 4.1 Configurations of impedance matching methods The features of the three methods are summarized in Table 4.1 For the circuit method, the capacitive and inductive elements are commercialized...
- 20
- 357
- 0
Advanced Radio Frequency Identification Design and Applications Part 7 pdf
... defined to have a thickness of 1.36 mm and a permittivity of 4.2 The values of M and N in Fig were 0.4 mm and 3.1 mm, respectively The overall dimensions of the MOCSRR particle and the OCSRR particle ... Design and Applications Future work Many different future topics of research could be explored as a result of this work Several of these topics could involve work on a different type of CPW particle, ... mm, n = 0.39 mm, ri = 0.45 mm and t = 0.39 mm The substrate was defined to be 1.36 mm thick and had a permittivity of 4.2 The values of M and N in Fig are 0.4 mm and 3.1 mm, respectively The results...
- 20
- 465
- 0
Advanced Radio Frequency Identification Design and Applications Part 9 pot
... input impedance of 30.9 − 213j ohms at a frequency of 915 MHz The input capacitance of the RFID IC has implications on the overall Q of the circuit and the final operating bandwidth of the RFID tag, ... envelopes and other paper/plastic products, items and documents has been tested successfully The chipless RFID tag operates between and 10.7 GHz of the UWB spectrum By exciting the tag with a wideband ... performing amplitude and phase data decoding Given the potential high demand on RFID technology in terms of reading range and applications some open issues and further areas of interest remain...
- 20
- 492
- 0
Advanced Radio Frequency Identification Design and Applications Part 10 pdf
... the vulnerabilities of the previous works, and then analyze the security and privacy requirements of the RFID tag search system in Section Finally, we conclude the chapter with future works in Section ... k = M( seed T ∗ ), x = P ( k) and seed Ti = M( k) x ← −−−− − send x else choose random number rand calculate s = M( seed Ti ) and m = P ( s ) rand ← −−−− − send rand with probability λ if m = ... the security and privacy of RFID tag search system with its own requirements, there still exist vulnerabilities Therefore, we first analyze the vulnerabilities of the previous works and then discuss...
- 20
- 376
- 0
Advanced Radio Frequency Identification Design and Applications Part 11 docx
... position of i-th tag The result of a recognition process is a set of recognized tags or combination of tags This set must be one of subsets of T Y is defined as a set of all subsets of T, and it ... the number of tags, and other various environmental conditions Most RFID based localization methods, however, assume that the recognition probability is only a function of distance and the transmission ... number of all possible combination of tags for the multiple recognition ranges In RTFL with multiple recognition ranges, elements of Q instead of Z are the outputs of recognition process The others...
- 20
- 358
- 0
Advanced Radio Frequency Identification Design and Applications Part 12 ppt
... detection and identification of buried UXO must be pursued and implemented This chapter presents the results of analytical and experimental efforts that demonstrated the viability of using munition-mounted ... function of r is slightly less than 1/r3 The magnetic field increases linearly with the area of the coil, with the current, and with the number of turns For a given value of r (one meter) and a ... increasing the number of turns increases the inductance of the coil The value of the inductance can be seen in equations (3) and (4) to increase as the square of the number of turns The voltage...
- 20
- 371
- 0
Advanced Radio Frequency Identification Design and Applications Part 13 docx
... Identification Design and Applications The basic behavior and orientation of the magnetic fields on the surface of the munitions not change as a function of munition depth in the range of 0.3 to 1.5 ... photo of one of the tagged cylinders is shown in Figure 15 The tag had 5.65 mm (0.22 inch) of material between it and the surrogate munition including 2.85 mm of plastic next to the cylinder and ... that the metal of the munition casing had a significant impact on the Q of the tag As expected, the presence of the munition decreased the inductance and increased the resistance of the tag’s circuit,...
- 20
- 414
- 0
Advanced Radio Frequency Identification Design and Applications Part 14 ppt
... analysis and simulation results, the solution depends on the number of tags, i.e q, and the position of these tags, i.e which leaf nodes they are located Moreover, the impact weight of the number of ... layer h which possesses the best trade-off between the number of collided nodes and the number of idle nodes in such layer If we cut off more collided (and useless) nodes, the better identification ... q 2q Number of nodes in the h-th layer of T' 4q q=2048 q=4096 Fig Collided nodes in the hth layer of T’ with different number of tags Note that the length of ID is 96 bits From Fig and 3, we find...
- 20
- 393
- 0
Advanced Radio Frequency Identification Design and Applications Part 15 pdf
... parts, the RF board PCB2 and the baseband board PCB1 The PCB2 board is mainly composed of antenna and RF module And the PCB1 board is composed of DSP, FPGA, ADC, DAC and some other peripheral modules ... cores of the baseband board, and this kind of system scheme is more and more prevalent and efficient now The DSP chip can be used to realize the tag’s protocol switching, state transferring, and ... Identification Design and Applications 1st 32bit are protocol control and tags number; 2nd and 3rd 32 bit are command data; And the last 3*32bit are reserved for backup Software design 3.1 Architecture...
- 14
- 419
- 0
Radio Frequency Identification Fundamentals and Applications, Bringing Research to Practice Part 1 potx
... bridges the gap between theory and practice and brings together a variety of research results and practical solutions in the field of RFID The book is a rich collection of articles written by people ... several concepts of RFID system integration, and introduces some integration examples of RFID applications Chapter 15 focuses on major short and long-term benefits of RFID systems and advices on ... Modeling and Analysis of the Strong Authentication Protocol for Secure RFID System 157 Hyun-Seok Kim and Jin-Young Choi 12 Evaluation of Group Management of RFID Passwords for Privacy Protection...
- 20
- 506
- 0
Radio Frequency Identification Fundamentals and Applications, Bringing Research to Practice Part 2 potx
... different economic and public activity in industry, commerce, science, medicine and others This procedure is the last and most important stage of algorithm of synthesis of RWD and tag antenna set ... of wire with a diameter of 0.3 mm round the ferrite cores with a length of 0.125 m, diameter of 0.005 m and initial permeability of 20 Highlighted the discrepancy between simulation results and ... from the center on axis of symmetry of RWD antenna loop , m Fig 12 Curves of value of the magnetic induction in function of distance z from the center on axis of symmetry of RWD antenna loop with...
- 20
- 333
- 0
Radio Frequency Identification Fundamentals and Applications, Bringing Research to Practice Part 3 pdf
... we set H=3, TLR reaches 10-4 and does not vary, independently of the λ value On the other hand, with H=6, the TLR reaches up to 10-3 It means that, one out of a thousand envelopes will be lost, ... other hand, the identification process analysis of dynamic scenarios has been oriented to determine the Tag Loss Ratio Configuration of actual implementations of RFID systems could make use of ... communication processing and an attached antenna to transmit and receive radio signal There are several types of RFID tags based on the differences of their power sources and communication methods In general,...
- 20
- 367
- 0
Tìm thêm: xác định các nguyên tắc biên soạn khảo sát chương trình đào tạo của các đơn vị đào tạo tại nhật bản khảo sát chương trình đào tạo gắn với các giáo trình cụ thể tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam điều tra đối với đối tượng giảng viên và đối tượng quản lí khảo sát thực tế giảng dạy tiếng nhật không chuyên ngữ tại việt nam khảo sát các chương trình đào tạo theo những bộ giáo trình tiêu biểu xác định mức độ đáp ứng về văn hoá và chuyên môn trong ct phát huy những thành tựu công nghệ mới nhất được áp dụng vào công tác dạy và học ngoại ngữ mở máy động cơ lồng sóc mở máy động cơ rôto dây quấn các đặc tính của động cơ điện không đồng bộ đặc tuyến hiệu suất h fi p2 đặc tuyến tốc độ rôto n fi p2 sự cần thiết phải đầu tư xây dựng nhà máy thông tin liên lạc và các dịch vụ phần 3 giới thiệu nguyên liệu từ bảng 3 1 ta thấy ngoài hai thành phần chủ yếu và chiếm tỷ lệ cao nhất là tinh bột và cacbonhydrat trong hạt gạo tẻ còn chứa đường cellulose hemicellulose chỉ tiêu chất lượng theo chất lượng phẩm chất sản phẩm khô từ gạo của bộ y tế năm 2008 chỉ tiêu chất lượng 9 tr 25