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 actuators—for temperature, humidity, pressure, flow, and indoor air quality;
  • DDC hardware—including microprocessors, microcomputers, and microcontrollers;
  • DDC software—operating system, utility, and applications software and the methods of configuring DDCs;
  • The operator–machine interface—for field devices, workstations, and multivendor displays;
  • Data communication systems for DDC—hardware, software, protocols and the ISO’s Open Systems Interconnection 7–layer architecture;
  • BACnet—ASHRAE’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 methodology—a complete case study, showing how to build system schematics, I/O and mode summaries, and logic flow diagrams;
  • DDC implementation—issues of design, specification, installation, commissioning, training, and operation and maintenance.