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: aˆ— Sensors and actuatorsa€“a€“for temperature, humidity, pressure, flow, and indoor air quality; aˆ— DDC hardwarea€“a€“including microprocessors, microcomputers, and microcontrollers; aˆ— DDC softwarea€“a€“operating system, utility, and applications software and the methods of configuring DDCs; aˆ— The operatora€“machine interfacea€“a€“for field devices, workstations, and multivendor displays; aˆ— Data communication systems for DDCa€“a€“hardware, software, protocols and the ISOa€²s Open Systems Interconnection 7a€“layer architecture; aˆ— BACneta€“a€“ASHRAEa€²s building automation and control networking protocol, from its design philosophy and the communication services it provides, to issues of extensibility, conformance, and specification; aˆ— DDC design methodologya€“a€“a complete case study, showing how to build system schematics, I/O and mode summaries, and logic flow diagrams; aˆ— DDC implementationa€“a€“issues of design, specification, installation, commissioning, training, and operation and maintenance.For our case study we will design the controls for a single-zone, constant-volume air handler. ... 8.1 SYSTEM DIAGRAM For the purposes of this example, leta#39;s assume that the HVAC engineer has already designed the air handler in terms of anbsp;...

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


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