[Bldg-sim] The Building Controls Virtual Test Bed 1.3 has been released

[Thierry Nouidui]

Note: EnergyPlus receives a vector as input in the BCVTB.

Let's assume (for your first problem) you would like EnergyPlus to get data
from simulators A and B. 

One way to do could be: 

.         compute in simulator A the data you would like to input to
EnergyPlus,

.         compute in simulator B the data you would like to input to
EnergyPlus,

.         use the VectorAssembler actor in BCVTB to concatenate the data
into one vector,

.         pass the concatenated vector to EnergyPlus.

 

Hope that helps.

Thanks!

 

Thierry

 

From: bcvtb at googlegroups.com [mailto:bcvtb at googlegroups.com] On Behalf Of
Smt
Sent: Thursday, May 23, 2013 10:56 PM
To: bcvtb at googlegroups.com
Cc: bldg-sim at lists.onebuilding.org
Subject: Re: The Building Controls Virtual Test Bed 1.3 has been released

 

Exactly! Do you know if this is possible? I wanted to know if energyplus can
get data from two different simulators.

 

Another question I have been trying is: can I run one energyplus simulator
faster than the other? Lets say you have one energyplus running, but for
every time time step t you have another energyplus that runs 3t. I want to
see the future before it happens in the other one. 

 

I tried to use for example the iterateoverarray actor but it does not work
because they are not synchronised......another idea is to use a different
director instead of the SDF to use the PN but it also didn't work because
bcvtb seems not to accept it, I changed the SystemVariables properties but
didn't work, do have any idea how this could be done?

 

Thanks! 


Am Donnerstag, 23. Mai 2013 22:34:27 UTC+2 schrieb Thierry Nouidui:

I don't fully understand this use case. Do you want for instance to connect
two simulators (e.g. TRNSYS and Dymola) to one instance of EnergyPlus?

Thanks!

Thierry

 

From: bc... at googlegroups.com <javascript:>  [mailto:bc... at googlegroups.com
<javascript:> ] On Behalf Of Smt
Sent: Thursday, May 23, 2013 12:59 AM
To: bc... at googlegroups.com <javascript:> 
Cc: bldg... at lists.onebuilding.org <javascript:> 
Subject: Re: The Building Controls Virtual Test Bed 1.3 has been released

 

Hi Thierry,

 

do you know if there is a way to connect more than one componet to
energyplus, for example to connect ptolemy and another simulator to exchange
data with it at the same time?

 

Thanks!

 


Am Donnerstag, 2. Mai 2013 20:17:47 UTC+2 schrieb Thierry Nouidui:

We are pleased to announce the release of the Building Controls Virtual Test
Bed 1.3.

 

The following changes have been made compared to version 1.2:

 

* TRNSYS  has been added as a client program.

* The Functional Mock-up Unit (FMU) for co-simulation import interface has
been added.

* The example files have been updated for EnergyPlus 8.0. 

 

The Building Controls Virtual Test Bed (BCVTB) is a freely available
open-source software environment that allows expert users to couple
different simulation programs for co-simulation, 

and to couple simulation programs with actual hardware. For example, the
BCVTB allows to simulate a building in EnergyPlus and the HVAC and control
system in Modelica, 

while exchanging data between the software as they simulate. The BCVTB is
based on the Ptolemy II software environment. 

The BCVTB allows expert users of simulation to expand the capabilities of
individual programs by linking them to other programs. 

Due to the different programs that may be involved in distributed
simulation, familiarity with configuring programs is essential.

 

Programs that are linked to the BCVTB are

 

* the EnergyPlus whole building energy simulation program,

* the Modelica modeling and simulation environment Dymola,

* the MATLAB and Simulink tools for scientific computing,

* the Radiance ray-tracing software for lighting analysis,

* the ESP-r integrated building energy modeling program,

* the TRNSYS system simulation program, 

* Functional Mock-up Units (FMU) for co-simulation,

* the BACnet stack, which allows exchanging data with BACnet compliant
Building Automation System (BAS),

* the analog/digital interface USB-1208LS from Measurement Computing
Corporation that can be connected to a USB port. 

 

In addition to using programs that are coupled to Ptolemy II, Ptolemy II's
graphical modeling environment can also be used to define models for control
systems, for physical devices, 

for communication systems or for post-processing and real-time
visualization. 

 

For free download and more information, please visit

http://simulationresearch.lbl.gov/bcvtb

 

Best regards,

 

--------------------------------------

 

Thierry Stephane Nouidui, PhD

 

Simulation Research Group

Lawrence Berkeley National Laboratory

1 Cyclotron Road, MS 90R3147

Berkeley, CA 94720

(510) 495-2337 voice

email: TSNo... at lbl.gov

 

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