1. Open Building Information Monitoring
Andrew Krioukov
David Culler

2. Previously: Manual Instrumentation
Fed Jiang, Jorge Ortiz, Stephen D.Haggerty,
4/12/11
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
70 ACME receptacle meters
/LoWPAN/IP
4 rooftop solar, temp sensors
Obvius steam meter

4. Continuous Commissioning
sMAP: Narrow Waist
Personal Feedback
Modeling
Continuous Commissioning
Control
Visualization
Applications
Actuation
Location
Storage
Debugging
Authentication
JSON, HTTP
sMAP
CSV, HTTP
HTML, HTTP
Bacnet/IP
ModBus RS-485
Remove Apogee, add later
Differing Schemas,
Encodings and Transport

5. Sutardja Dai Hall ~140k sq. feet Siemens Apogee BMS WattStopper
BACnet/IP
5886 sense/control points
Built up systems set the stage for a new way of collecting building information
New buildings such as SDH have extensive instrumentation already, how to tap in?
Next:
How we accessed the data
What we obtained
Issues along the way

6. Network Sensors, Actuators Controllers Internet Modem Remote Login
Gateway
sMAP
Siemens P2
over RS-485
sMAP – homogeneous interface, higher level JSON encoding, extensible schema, human & machine readable
BACnet – fixed format, binary encoding, tunneled over IP low level
Apogee
Server
BACnet/IP

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

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

9. Schema Object Types (50 total): Analog – Float
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
All binary IDs
Query by binary ID
Schedule …

10. Schema Properties (344 total): Units (190 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 …
All binary

11. Data 1358 control settings 2291 meters/sensors 2165 control outputs
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. Emergency Lights and Recepticals
Data
MSB
MS41A
(FAB Process Tool)
MS41B
(FAB Mech))
MD42A
EX-6
EX-7
ELEV-4
SCHWP-1
SCHWP-2
CWP-1
CWP-2
PVP-1
PVP-2
PCWP-1
PCWP-2
CHP-1
CDAC-1
CDAC-2
SF-1
SF-2
SF-3
RO/DI
Acid Wash
RAHU-1 thru 26
ATS-E02
EOCD41B
CAC-1
CAC-2
CITRIS Server Room
BDF
IDF-3
IDF-6
MDC-UPS-Bypass
ATS-EL
ELCD41A
Emergency Lights and Recepticals
ELMD47A
EF-1
EF-2
EF-3
EF-4
CB4A
CL42A
CL43A
CL44A
CL45A
CL46A
CL47A
CR27A
CR26A
CR25A
CR24A
CR23A
CR22A
Gold – electric meters
Blue – systems, building components being measured
Metering based on physical connections not logical organization

14. Power Breakdown
Building Power

15. Issues Naming & Metadata Encoding – binary Schema – fixed Security
Based on underlying physical controllers
Encoding – binary
Schema – fixed
Security
Schema – constrained
Very fragile – security,
Name

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

17. Questions

18. Sutardja Dai Building Power
MSA
MSB
AH1A &1B
CAC 1&2
ELEV 4
CITRIS Server Room
CHP 2&3
IDF 3-6
SF.2
BDF
CH-1
Lev. 2-7 Lighting and Receptacles
CP-1
FAB HVAC Load
800kW – 1MW