Data acquisition system block diagram pdf

Following are the blocks of Digital data acquisition systems. Transducer − It converts physical quantities into electrical signals. Signal conditioner − It performs the functions like amplification and selection of desired portion of the signal. Multiplexer − connects one of the multiple inputs to output. Lab 4 - Data Acquisition 5/13 Block Diagram 5. Display the block diagram by clicking it or by selecting Window»Show Diagram. Note - Control terminals have a thicker border than indicator terminals. 6. Select the Multiply and Add functions on the Functions»Numeric palette and place them on the block diagram. Continuous data acquisition • To implement a continuous data acquisition on a non real-time system a PC buffer is needed in addition to the FIFO buffer on the DAQ card • The PC buffer is a circular buffer in the computer RAM • When we perform a DAQ-read in our application software we read the values out of the circular Analog systems are used when wide bandwidth is required or when lower accuracy can be allowed. Digital systems are used when the physical process being monitored slowly varies and when high accuracy and low per-channel cost is required. Block diagram of digital data acquisition system. Computer-controlled data-acquisition systems are used when The data acquisition system includes vibration sensors, thermocouples, and a transducer. The transducer was connected to the computer via an interface card. Figure 15 shows a block diagram of the experimental setup. A photograph of the data acquisition system is shown in Figure 20. In essence, data acquisition is a process that involves collecting information to understand the electrical or physical phenomenon using sensors, measurement device, and a computer. Together, these components form a Data Acquisition System or DAQ System. In this guide, you'll learn about: DATA ACQUISITION is the process of sampling signals that measure real world physical conditions and converting the resulting samples into digital numeric values that can be manipulated by a computer. Data acquisition systems (abbreviated with the acronym DAS or DAQ) typically convert analog waveforms into digital values for easy processing. 5 Technical Manual on ''Spervisory Control and Data Acquisition (SCADA) Systems for Command, Control, Communications, Computer, Intelligence, Surveillance, and Reconnaissance (C4isr) Facilities Headquarters", Department of the Army, Washington, Dc, January 2006 August 24, 2010 tabish288@yahoo.com 40 ff 1.1 :DATA ACQUISITION SYSTEM DAQ (Data AcQuisition) is defined as the process of taking a real-world signal as input, such as avoltage or current any electrical input, into the computer, for processing, analysis, storage or other data manipulation or conditioning.A Physical phenomena represents the real-world signal we are trying to measure. The Data Acquisition Reference Design provides a framework upon which you can build and expand a custom application. The reference design's core functionality involves configuring data acquisition, acquiring data, logging data to disk, and displaying data. It is built on top of other LabVIEW software components in order to maximize software reuse. This is not designed to be a fully featured A data acquisition system is a collection of software and hardware that allows one to measure or control the physical characteristics of something in the real world. A complet