High-vacuum pressure sensors, used in the manufacture of semiconductors, data storage hardware, and video displays, require sensors capable of controlling the vacuum and detecting system failure within milliseconds. To achieve this level of precision, engineers use capacitance diaphragm gauge manometers, sensors that monitor the effects of pressure changes on a thin ceramic membrane. Extremely sensitive to temperature, these devices require complex and lengthy calibration before they can be used in production.
Zühlke developed capacitance diaphragm gauge manometer firmware for INFICON, a leading supplier of vacuum gauges. Using MathWorks tools and Model-Based Design, Zühlke quickly designed and implemented algorithms for temperature compensation, signal linearity, and signal resolution.
"With MathWorks tools, we delivered a system that fully satisfied the needs of our customer and the high-quality demands of the pressure sensor," says Peter Wehrli, Senior Engineer at Zühlke. "The result underscores our ability to leverage Model-Based Design even for projects that do not involve sophisticated target hardware or complex designs."