Visual engineering environment based on interchangeable virtual instrument for acoustic pressure field
Huancai Lu · The Journal of the Acoustical Society of America · 2000
Architecture and kernel technology of a visual engineering environment for an acoustic pressure field is presented. The system software is constructed based on the hierarchy architecture of virtual instrument software and COM technique in order to realize the flexible reconfiguration of an acoustic pressure field measuring system. The attribute models of measuring channels and sensors are established for instrument’s and sensor’s interchangeability. The locking critical section technique is used for the security of multitask intercurrent process and share relation database. These kernel techniques make acoustic pressure field measuring system easily upgraded (e.g., the function and scale of the measuring system can be extended for different test tasks), instruments or sensors can be interchanged without modifying the software source codes. Therefore maintenance of the acoustic pressure field measuring system is greatly reduced and the lifecycle is prolonged. In this visual engineering environment, the measuring data of acoustic pressure field can be controlled in real-time and expressed in table, curve, bar chart, contour, and virtual instrument. Simultaneously the data can be transmitted through an ODBC interface to another computational environment (e.g., matlab) or Internet client for further analysis.