|
|
|
|
The core of the system is a software interface between an operator (stagehand) and standard stage equipment such as a motorized winch. The interface built under the National Instruments LabVIEW Development for industrial automation allows independent control and monitoring of several axes of stage effects with an onscreen display that can be customized much as below--
Logic, safety monitoring, and hardware addressing are facilitated through the LabVIEW graphical programming language. For example:
The operator interface sends control signals to motors via specialized cards that reside in the PC. Typically, these control signals operate industrial AC motors which are powered by standard inverter drives that allow operation at variable speed as required by the effect:
|
|
© Fritz Schwentker -- 26 August 2004 |
