Digital mockups for the testing of a medical ventilator

Authors:
Bailey Miller;Frank Vahid;Tony Givargis
Affiliations:
University of California Riverside, Riverside, CA, USA;University of California Riverside, Riverside, CA, USA;University of California Irvine, Irvine, CA, USA
Venue:
Proceedings of the 2nd ACM SIGHIT International Health Informatics Symposium
Year:
2012

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Abstract

Medical devices have become more difficult to test as hardware and software complexity grows. Device manufacturers must meet minimum standards while striving to reduce product development time. New techniques for providing comprehensive testing need to be developed that can be easily configured, cover a broad range of test scenarios, and facilitate automation. Digital mockups describe a method of testing a cyber-physical device wherein a digital model of the environment is used to stress a real device's embedded software and functionality. We demonstrate the use of a digital mockup to test a medical ventilator device. A lung model is hosted on an FPGA and connected to a ventilator by bypassing the ventilator's transducers. PC-based manager software allows user configuration in real-time of both the device and the model to facilitate test automation. An XML model description is embedded in the digital mockup framework to facilitate communication between the FPGA and PC software.