Xem 1-20 trên 54 kết quả Digital input
  • Digital input modules can be used to connect the PLC to digital process signals. They are suitable for connecting standard switches and two-wire proximity switches (BERO).

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  • Signals represent information about data, voice, audio, image, video… There are many ways to classify signals but here we categorize signals as either analog (continuous-time) or digital (discretetime). Signal processing is to use circuits and systems (hardware and software) to act on input signal to give output signal which differs from the input, the way we would like to.

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  • A filter is a system that is designed to alter the spectral content of input signals in a specified manner. Common filtering objectives include improving signal quality, extracting information from signals, or separating signal components that have been previously combined. A digital filter is a mathematical algorithm implemented in hardware, firmware, and/or software that operates on a digital input signal to produce a digital output signal for achieving filtering objectives.

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  • Digital Signal Processing (DSP) is formally defined as a digital operation performed on an input sequence of numbers (including feedback from the result of the digital operation). The sequence of numbers can represent anything from digitised human speech to stock price data, processed to detect hidden periodicities or pattern

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  • Design and Implementation of FIR Filters A filter is a system that is designed to alter the spectral content of input signals in a specified manner. Common filtering objectives include improving signal quality, extracting information from signals, or separating signal components that have been previously combined. A digital filter is a mathematical algorithm implemented in hardware, firmware, and/or software that operates on a digital input signal to produce a digital output signal for achieving filtering objectives.

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  • Stream Input/Output (ASIO) is a computer sound card driver protocol for digital audio specified by Steinberg, providing a low-latency and high fidelity interface between a software application and a computer's sound card. Whereas Microsoft’s DirectSound is commonly used as an intermediary signal path for non-professional users

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  • Chapter 3 presents the discrete-time systems. In this chapter, you will learn to: Input/output relationship of the systems, linear time-invariant (LTI) systems, FIR and IIR filters, causality and stability of the systems.

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  • ECE 551 Digital Design And Synthesis: Lecture 7 has many contents: Setting Basic Timing Constraints, Defining Input Delay, Anything More Need Constraints, GUI’s are for Children, Sample DC Shell Script, Hold time (worst case is back to back FF’s), Holy Mackerel Batmat, This thing is a monster, Getting Lost in a Sea of Documentation, Optimization Priorities, Constraints Default Cost Vector, Compiling the Design,...

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  • The MSP430 microcontroller family offers ultra-low power mixed signal, 16-bit architecture that is perfect for wireless low-power industrial and portable medical applications. This book begins with an overview of embedded systems and microcontrollers followed by a comprehensive in-depth look at the MSP430. The coverage included a tour of the microcontroller's architecture and functionality along with a review of the development environment. Start using the MSP430 armed with a complete understanding of the microcontroller and what you need to get the microcontroller up and running...

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  • The analog input modules convert analog signals from the process into digital signals for processing within the PLC. The modules feature: Resolution from 9 to 15 bits + sign (for different conversion times), configurable Different measuring ranges; the basic current/voltage range settings are adjusted mechanically via measurement range modules. Fine adjustments are made with the STEP 7 Hardware Configuration tool on a PG.

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  • Our goal in writing this book is to expose the inner workings of the modern digital computer at a level that demystifies what goes on inside the machine. The only prerequisite to Principles of Computer Architecture is a working knowledge of a high-level programming language. The breadth of material has been chosen to cover topics normally found in a first course in computer architecture or computer organization. The breadth and depth of coverage have been steered to also place the beginning student on a solid track for continuing studies in computer related disciplines....

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  • As discussed in previous chapters, filtering refers to the linear process designed to alter the spectral content of an input signal in a specified manner. In Chapters 5 and 6, we introduced techniques for designing and implementing FIR and IIR filters for given specifications. Conventional FIR and IIR filters are time-invariant. They perform linear operations on an input signal to generate an output signal based on the fixed coefficients.

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  • Baseband Communications Y(b) Timing Error Detector 4 r(t; 8 ) - x(t) ) ,+) u(t) vco 4 Figure 2-18 Error-Tracking SynchronizerStructure The timing error detector performs a suitable time-invariant nonlinear operation on the input signal and the local reference,so that its output signal z(t) gives an indication of the instantaneous timing error e = & - g. The timing error detector output signal enters a linear time-invariant loop filter. Its frequency responsein the Laplace domain is denotedby F(s) ; the frequencyresponsein the frequency domain is F(w).

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  • An open data communication protocol developed in 1979 Published by Modicon Open structure Flexible Widely known Supplied by many SCADA and HMI software Have OPC Servers 2 serial transmission modes: ASCII 10 bits RTU (Binary) 11 bits Communication interface RS-232/485 Ethernet (TCP/IP) Station Device: 0 ~ 255 Digital input 1xxxx: 4 digits for hexadecimal address (0000 ~ FFFF) 1xxxxx: 5 digital for decimal address (0 ~ 65535) Digital output 0xxxx: 4 digits for hexadecimal address (0000 ~ FFFF) 0xxxxx: 5 digital for decimal address (0 ~ 65535) Analog input 4xxxx: 4 dig...

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  • It is my privilege to do my Masters in Electrical Engineering Department at Boise State University. I would like to take this opportunity to thank my Professors for providing me with quality and technical education, guidance and motivation. The special courses and the research have induced valuable concepts and good understanding of the subject. I would like to thank MURI (Multidisciplinary University Research Initiative Program) for funding this project. Very special thanks to my advisor, Dr.

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  • Characterizing the Performance of Adaptive Filters 19.3 Analytical Models, Assumptions, and Definitions System Identification Model for the Desired Response Signal • Statistical Models for the Input Signal • The Independence Assumptions • Useful Definitions 19.4 Analysis of the LMS Adaptive Filter Mean Analysis • Mean-Square Analysis 19.5 Performance Issues Basic Criteria for Performance • Identifying Stationary Systems • Tracking Time-Varying Systems Normalized Step Sizes • Adaptive and Matrix Step Sizes • Other Time-Varying Step Size Methods 19.

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  • Filter Banks and Wavelets The methods of designing bases that we will employ draw on ideas first used in the construction of multirate filter banks. The idea of such systems is to take an input system and split it into subsequences using banks of filters. This simplest case involves splitting into just two parts using a structure such as that shown in Fig. 35.1. This technique has a long history of use in the area of subband coding: first of speech [1, 2] and more recently of images [3, 4]. In fact, the most successful image coding schemes are based on...

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  • The ATmega16 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega16 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

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  • Digital Fundamentals is irrelevant: AC . It may appear tempting to create a product term consisting of the three boxes on the bottom edge of the K-map. This is not valid because it does not result in all boxes sharing a common product relationship, and therefore violates the power-of-two rule mentioned previously. Upon completing the K-map, all product terms are summed to yield a final and simplified Boolean equation that relates the input variables and the output: Y = B + AC . Functions of four variables are just as easy to solve using a K-map. Beyond four variables, it is...

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  • Interface converter, for converting RS-232 to RS-422 and RS-485, with electrical isolation, 2 channels Bidirectional, wireless, 2400 MHz transmission system (European version), consisting of 2 transceivers (transmitter and receiver) and two antennas with connecting cable Fieldline Modular Wireless IO set, consisting of: Wireless IO base station for one Wireless IO terminal and Wireless IO device, 8 digital inputs, 8 digital outputs

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