Figure 2
The system architecture diagram consists of a large rectangle with three vertical labels located on the far left that define the horizontal layers: “User Interface” at the top, “Data Platform” in the middle, and “Physical Platform” at the bottom. The “User Interface” layer contains three rounded rectangular boxes arranged horizontally: “User” on the left, “Platform Website” in the center, and “Frontend Node dot j s” on the right. The “Data Platform” layer contains several rounded rectangular boxes: “Simulator Node dot j s Server” on the left, “A I MODULE” in the upper center, “Digital Model” on the bottom left, “Database Mongo D B” (represented as a cylinder) in the lower center, and “Backend Node dot j s” on the right. The “Physical Platform” layer contains one rounded rectangular box on the far left labeled “Physical Scaled Model”. The components are connected by various arrows: In the top layer, a double-headed arrow labeled “Request Response” connects “User” and “Platform Website”, and another double-headed arrow labeled “Request Response” connects “Platform Website” and “Frontend Node dot j s”. A diagonal double-headed arrow labeled “Requests Response” connects “Platform Website” to “Simulator Node dot j s Server”. A vertical double-headed arrow connects “Platform Website” to “A I MODULE”, which in turn connects vertically to the “Database Mongo D B” in the middle layer. A diagonal double-headed arrow labeled “Requests Response” connects “Platform Website” to “Backend Node dot j s”. A vertical double-headed arrow labeled “Response Requests” connects “Frontend Node dot j s” to “Backend Node dot j s”. In the middle layer, double-headed arrows labeled “Requests Response” connect “Database Mongo D B” to the “Simulator Node dot j s Server” and the “Backend Node dot j s”. A double-headed arrow labeled “Requests Response” connects “Digital Model” and “Backend Node dot j s”. An arrow labeled “B I M Data” points from “Digital Model” to “Database Mongo D B”. In the bottom left, an arrow labeled “Sensor Data” points from “Physical Scaled Model” up to the “Simulator Node dot j s Server”, and another arrow labeled “Building Controls” points from “Physical Scaled Model” to “Digital Model”.System architecture for CDP. Source: Authors' own work