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Open Building Information Monitoring

Open Building Information Monitoring. Andrew Krioukov David Culler. Previously: Manual Instrumentation. Cory Hall Sensors & Meters. 10 Dent PowerScout electrical meters ModBus , RS-485 2 Power Standards Labs meters Ethernet 2 ION 6200 meters ModBus , RS-485 70 ACME receptacle meters

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Open Building Information Monitoring

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  1. Open Building Information Monitoring Andrew Krioukov David Culler

  2. Previously: Manual Instrumentation CPS 2011

  3. Cory Hall Sensors & Meters • 10 Dent PowerScout electrical meters • ModBus, RS-485 • 2 Power Standards Labs meters • Ethernet • 2 ION 6200 meters • ModBus, RS-485 • 70 ACME receptacle meters • 802.15.4/LoWPAN/IP • 4 rooftop solar, temp sensors • Obvius steam meter

  4. sMAP: Narrow Waist PersonalFeedback Modeling ContinuousCommissioning Visualization Control Applications Actuation Location Storage Debugging Authentication JSON, HTTP sMAP Differing Schemas, Encodings and Transport ModBusRS-485 CSV, HTTP HTML, HTTP Bacnet/IP

  5. Sutardja Dai Hall • ~140k sq. feet • Siemens Apogee BMS • WattStopper • BACnet/IP • 5886 sense/control points

  6. Network Sensors, Actuators Controllers Internet Remote Login Siemens P2 over RS-485 sMAP Gateway Apogee Server BACnet/IP Modem

  7. Network Internet Remote Login Remote Login, BACnet/IP sMAP Gateway Apogee Server WattStopper Server Modem BACnet/IP

  8. BACnet/IP Protocol • Schema • Devices • Objects • Types • Properties • Methods • Discovery • Read • Write

  9. Schema Object Types (50 total): Device ID Analog – Float Binary – Boolean (e.g. relay state) Multi-state – Enum (e.g. high/med/low) Object ID, Type Num Property ID Property ID … Input – Sensor input (e.g. temp) Output – Control output (e.g. valve pos) Value – Variable (e.g. setpoint) Object ID Schedule …

  10. Schema Properties (344 total): • PROP_PRESENT_VALUE • PROP_DESCRIPTION • PROP_LOCATION • PROP_UNITS • PROP_SCALE • PROP_LOW_LIMIT … Units (190 total): • Area • Electrical • Frequency • Length • Light • Mass • Mass Flow • Power • Pressure • Temperature • Time • Torque • Velocity • Volume • Volumetric Flow …

  11. Data • 1358 control settings • Set points, Relays (lights, pumps, etc), Schedules • 2291 meters/sensors • Power (building, floor, lights, chiller, pumps,etc) • Current, voltage, apparent, real, reactive, peak • Temp (rooms, chilled water, hot water) • Air volume • Alarms, Errors • 2165 control outputs • Dampers, valves, min/max flow, fan speed, PID parameters • 72 other

  12. Extendable to other Buildings • Center for the Built Environment • Other buildings on campus • NY Times Building

  13. Data

  14. Power Breakdown Building Power

  15. Issues • Naming & Metadata • Based on underlying physical controllers • Encoding – binary • Schema – fixed • Security

  16. Security Issues Internet Remote Login Remote Login, BACnet/IP sMAP Gateway Apogee Server WattStopper Server Modem BACnet/IP

  17. Questions

  18. Sutardja Dai Building Power 800kW – 1MW

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