BacNet and Analog/Digital Interfaces of the Building Controls Virtual Testbed

Nouidui, Thierry Stephane; Wetter, Michael; Pang, Xiufeng; Bhattachayra, Prajesh; Haves, Philip

doi:10.2172/1168733

Cited by 11 publications

(14 citation statements)

References 3 publications

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“…Figure 1 gives an overview of tools coupled to the BCVTB. The BCVTB also allows simulation tools to be coupled with hardware through its BACnet interface or its analog/digital interface [16].…”

Section: Functional Mock-up Interface For Co-simulationmentioning

confidence: 99%

Tool coupling for the design and operation of building energy and control systems based on the Functional Mock-up Interface standard

Nouidui

Wetter

2014

Linköping Electronic Conference Proceedings

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This paper describes software tools developed at the Lawrence Berkeley National Laboratory (LBNL) that can be coupled through the Functional Mock-up Interface standard in support of the design and operation of building energy and control systems. These tools have been developed to address the gaps and limitations encountered in legacy simulation tools. These tools were originally designed for the analysis of individual domains of buildings, and have been difficult to integrate with other tools for runtime data exchange. The coupling has been realized by use of the Functional Mock-up Interface for co-simulation, which standardizes an application programming interface for simulator interoperability that has been adopted in a variety of industrial domains.As a variety of coupling scenarios are possible, this paper provides users with guidance on what coupling may be best suited for their application. Furthermore, the paper illustrates how tools can be integrated into a building management system to support the operation of buildings. These tools may be a design model that is used for real-time performance monitoring, a fault detection and diagnostics algorithm, or a control sequence, each of which may be exported as a Functional Mock-up Unit and made available in a building management system as an input/output block. We anticipate that this capability can contribute to bridging the observed performance gap between design and operational energy use of buildings.

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Section: Functional Mock-up Interface For Co-simulationmentioning

confidence: 99%

Tool coupling for the design and operation of building energy and control systems based on the Functional Mock-up Interface standard

Nouidui

Wetter

2014

Linköping Electronic Conference Proceedings

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“…Alternatively, the analog or digital interface that is provided with the BCVTB could be used if BACnet is not supported by the EMCS. The BCVTB contains two actors that can read from and write to BACnet devices [11]. The read function makes the building metrics available for the model inputs while the write function may be used to write to supervisory control setpoints.…”

Section: Emcs Integrationmentioning

confidence: 99%

“…A BACnet interface for the BCVTB has been recently developed. It allows simulation program to communicate with BACnet-compatible building control systems [11].…”

Section: Introductionmentioning

confidence: 99%

A framework for simulation-based real-time whole building performance assessment

Pang

Wetter

Bhattacharya

et al. 2012

Building and Environment

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112

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Most commercial buildings do not perform as well in practice as intended by the design and their performances often deteriorate over time. Reasons include faulty construction, malfunctioning equipment, incorrectly configured control systems and inappropriate operating procedures. One approach to addressing this problems is to compare the predictions of an energy simulation model of the building to the measured performance and analyze significant differences to infer the presence and location of faults. This paper presents a framework that allows a comparison of building actual performance and expected performance in real time. The realization of the framework utilized the EnergyPlus, the Building Controls Virtual Test Bed (BCVTB) and the Energy Management and Control System (EMCS) was developed. An EnergyPlus model that represents expected performance of a building runs in real time and reports the predicted building performance at each time step. The BCVTB is used as the software platform to acquire relevant inputs from the EMCS through a BACnet interface and send them to the EnergyPlus and to a database for archiving. A proof-of-concept demonstration is also presented.

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“…The BACnet module in the BCVTB, described in [14], interfaces with the Siemens BACnet server in order to collect the building performance data. The procedure for using the BACnet interface involves the following steps: September 2011 1) Collect the BACnet server/device information from the vendor, including device instance, object type and mapping of all the data points to relevant object type instances.…”

Section: Bacnet Interfacementioning

confidence: 99%