Direct Digital Control of Building Systems

Direct Digital Control of Building Systems

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Direct Digital Control Of Building Systems From a brief historical look at the evolution of DDC to some thoughts on the future uses of artificial intelligence and fuzzy logic, this practical new work provides a systematic discussion of the theory and application possibilities of: Sensors and actuatorsa€”for temperature, humidity, pressure, flow, and indoor air quality; DDC hardwarea€”including microprocessors, microcomputers, and microcontrollers; DDC softwarea€”operating system, utility, and applications software and the methods of configuring DDCs; The operator-machine interfacea€”for field devices, workstations, and multivendor displays; Data communication systems for DDCa€”hardware, software, protocols and the ISOa€™s Open Systems Interconnection 7-layer architecture; BACneta€”ASHRAEa€™s building automation and control networking protocol, from its design philosophy and the communication services it provides, to issues of extensibility, conformance, and specification; DDC design methodologya€”a complete case study, showing how to build system schematics, I/O and mode summaries, and logic flow diagrams; DDC implementationa€”issues of design, specification, installation, commissioning, training, and operation and maintenance.Johnsona#39;s was called the Johnson Control Center; Honeywella#39;s was designated the Selectrographic System; and Powersa#39; was named the Powers Automation Center. ... Another common feature was the annunciation of alarms generated by an electrical contact closure. ... 1.4 COMPUTERIZED MANUAL SYSTEMS The first real electronic, digital computers, 1.3 MANUAL CENTRAL CONTROL SYSTEMS 5.

Title:Direct Digital Control of Building Systems
Author: H. Michael Newman, Morton Dan Morris
Publisher:John Wiley & Sons - 1994

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