Collecting and Managing Building Data Jorge Ortiz ActionWebs Weekly Meeting September 1, 2010

Buildings large electrical energy consumer 72% of electrical consumption, 40% of total consumption, 42% of GHG footprint 370 B$ in US annual utility bill 9.5% of GDP in bldg construction/renovation Primarily Coal generation 10-20% of the energy is wasted 1 – Visibility and intelligence can help reduce waste 2 2 Electricity source Coal consumption by sector 1K. W. Roth et al., Energy Impact of Commercial Building Controls and Performance Diagnostics, TIAX ( 2005).

Talk overview Building energy management goals Cory Hall project Simple Monitoring and Actuation Protocol (sMAP) – Live, raw data Integrated Sensor-Stream Storage System (IS4) – Live, raw, contextualized and processed Current state and future work

Power proportionality in buildings Uncover underlying energy usage – What are the usage patterns and models? Uncover available energy – How much energy is available? Electric, solar, wind, etc. – How much does it cost? Etc. Shed unnecessary waste – Define efficiency metrics Schedule the remaining load – Optimization REPEAT

Uncovering each layer 5 CT: mains power monitoring panel level power monitoring ACme: plug load energy monitor and controller Temperature Humidity Vibration Pressure Load Tree Climate Plant Environments & Activity

Electrical Weather Geographical Water Environmental Structural Actuator Occupancy sMAP Modeling Visualization Continuous Commissioning Control Personal Feedback Debugging Storage Location Authentication Actuation Applications Physical Information Uniform Representation of Physical Data

sMAP Overview Simple Monitoring and Action Profile JSON data format for measuring, sensing, and metering HTTP/Restful interface to each sensor or meter TermDescription Sensingsampling an instantaneous physical quantity. Meteringdetermining the integral of some physical quantity over time. measureme nt point Refers to a single physical point of instrumentation. measureme nt channel Measurement devices often derive multiple values from a single instrumentation point. TinyOS/BLIP HTTP Engine Application Interface Link 6lowpan HC HYDRO Routing TCP

Capturing electric load tree ElectricalPhysical Humidity PAR/TSR Temperature Circuit/breaker panel level power monitoring Vibration Load Tree CT mains power monitoring ACme: plug load energy monitor and controller

Data-Metadata Bind Naming GET { "status": "success", "pubid": " c-b330- e d970", "properties": { "formatting": { "UnitofTime": "second", "UnitofMeasure": "kW", "Divisor": 10, "MeterType": "electric", "Version": 1, … } { "status": "success", "pubid": " c-b330- e d970", "properties": { "formatting": { "UnitofTime": "second", "UnitofMeasure": "kW", "Divisor": 10, "MeterType": "electric", "Version": 1, … } REPLY Main xform cory/lt/main/devices/C3/true_power

Cory Hall Load Tree RESTful access

Capturing context Chiller Pump Chiller Pump AHU SFEF Vent Zone

HVAC namespace / /hvac/hvac_wet / /devices / /devices / /devices / … / /hvac/hvac_wet / /devices / /devices / /devices / …

Namespace for spaces / /spaces/ / /devices / /devices / /devices / … / /spaces/ / /devices / /devices / /devices / …

Hierarchical composition Resource node hierarchy rules for each namespace – i.e. Room may have area child but not a floor child Some resource have “devices” child “devices” contain device instances Device instances contain publishers – Publisher map to sMAP “measurement points” Namespaces combined through measurement devices

Combining namespaces

Combining query facilities

IS4 Architectural Overview Humidity PAR/TSR Temperature Vibration CT mains power monitoring ACme: plug load energy monitor and controller Publish Subscribe Storage HTTP/REST Publish Manager Subscribe Manager Metadata Manager Query Processor Data processing Security Manager IS4 Subscribe JSON

Current state 69 raw stream sources available (sMAP) 55 contextualized stream sources available (IS4) IS4 release available for download – Version 2.0 to be released in a few weeks

(Near) future work Direct all sMAP feeds through IS4 Integrate modeling with querying features Automatic device configuration

Questions More information – – Quickstart tutorial: 4_quickstart 4_quickstart –