Design and implementation of general aircraft cabin pressure alarm module
Aiming to address the issue of abnormal cabin environmental pressure compromising flight comfort and safety,this paper proposes a highly reliable and safe pure hardware cabin pressure alarm module.By monitoring the cabin pressure,it can provide alarm information through discrete quantity and data bus when the cabin pressure exceeds or falls below the set safety threshold,or when there is a significant change in the cabin pressure rate.Simultaneously,by monitoring the output signal of the discrete quantity,both reliability and safety of the design are enhanced.In case of inconsistency between the output of the discrete quantity or if there is an overcurrent or short circuit in its output,fault information will be reported via the bus.Laboratory environment testing demonstrates that this module fulfills all requirements in terms of functionality and performance.
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