11/10/2022 0 Comments Basic data acquisition system pdf
However, since opto-isolators tend to be smaller and less expensive than pulse transformers, they will be the only type of device considered here. Each additional eight channels requires only one additional isolated line.īoth opto-isolators and pulse transformers could be used to isolate the signals. BASIC DATA ACQUISITION SYSTEM PDF SERIALNow, with the LTC1090 family of serial data acquisition systems, it is possible to transmit eight channels of data with only four isolated lines. Traditionally, the highly noise immune, digitally encoded signals required many isolated lines for each channel. Analog signals have poor noise immunity and one isolator is required for each signal point. The data transmitted over the isolated lines can be either analog or digital. Reasons for the electrical isolation include the following: to allow floating measurements at high voltages for safety, to reduce the danger of electrical shock, as might occur in medical applications and to eliminate ground loops between measurement points and the system controller which can cause errors. In data acquisition systems it is often necessary to electrically isolate the measurement points from the system controller. Guy Hoover, William Rempfer, in Analog Circuit Design, Volume Three, 2015 Introduction BASIC DATA ACQUISITION SYSTEM PDF MANUALFor instance, meter and network installation and logistics planning, installation process and exception management, meter provisioning (add/modify/delete) of the AMR/AMI systems, cutover process from manual to AMI meter reading & billing, AMI control (on request read, schedule management, etc.), meter and network equipment asset management, connect/disconnect process management, tampering detection and resolution, outage and restoration data management and data analysis and automated service order creation, etc., are the processes handled by MDAS ( Dinesh, Makonin, & Bajić FEMP, 2007 Tufail and Naeem, 2016), as shown in Fig. Various business processes are supported by MDAS. MDAS is a combination of features and functionalities of combined HES and few functionalities of Meter Data Management (MDM) System. Then, it aggregates and/or transforms meter data into usable information for enterprise systems and users. It further analyzes meter read data and identifies the issue, identifies the anomalous events in the meter reads and network, and automatically forwards work or information to other enterprise systems. It is single interface in the enterprise for all the MDAS data, validates all data in real-time, store and make data available for the utility to use for billing, load analysis, and other applications. MDAS utilizes that data to utility business process functions and integrate with utility business systems. BASIC DATA ACQUISITION SYSTEM PDF SOFTWAREMDAS consists of computer hardware and software that receives and manages meter data. The data collected by the computer should be backed up regularly. The computer of the data acquisition system has the possibility of failure at any time. The accuracy of ring number shall be checked by a specialized person to ensure the data correction. Any problem found should be fixed immediately.īecause the data acquisition system may be disconnected at any time, the ring number it collected may be inconsistent with the actual number. As the data acquisition system is connected to the PLC system by remote telecommunication cable in the tunnel, the connection cable shall be daily checked and maintained. The data acquisition system should maintain normal operation for 24 h, and it should not stop or turn off without reason. In any case, the normal operation of the data acquisition system shall be fully guaranteed. The data acquisition system collects and records all kinds of advancing technical parameters during tunnelling. Shengjun Jiao, in Shield Construction Techniques in Tunneling, 2021 10.2.3.7 Data acquisition system operation
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