FMECA & Software Failure Modes, Effects and Criticality Analysis. (35pts.) Lecture 5. Perform a SFMECA on the Infant Incubator system described as follows:

The system being specified is the Thermostat of an Incubator. An incubator provides controlled temperature, humidity, and oxygen (if necessary)for an infant in a hospital. Incubatorsare used extensively in Neonatal Intensive Care Units for the care of premature infants.

The purpose of the Thermostat is to maintain the air temperature of an Incubator within a desired range. It senses the Current Temperature of the Incubator and turns the Heat Source on and off to warm the air as needed. If the temperature falls too far below or rises too far above the Desired Temperature Range, it activates an Alarm to alert the Nurse. The system allows the Nurse to set the Desired Temperature Range and to set the Alarm Temperature Range outside the Desired Temperature Range of which the alarm should be activated. [Adapted from DOT, 2009].