Integrated Constant Speed Drive Input Shaft Monitor

The feasibility of a small, rugged electronics and sensor package that will be installed within the housing of the Constant Speed Drive (CSD) will be determined.The Variable Reluctance sensor that is used will monitor the tooth-passing speed of an existing input shaft gear.The micro-controller within the electronics package will count the revolutions, and correlate the revolutions with statistics such as input shaft speed and internal temperature.Communication with the electronics will be facilitated through existing connectors, and will be accomplished without disassembling the CSD.A novel energy harvesting method will be used to power the electronics from the variable reluctance sensor, allowing for a long service life. KCFs innovative approach builds on extensive experience gained from applying similar technologies in industrial and military fields.The concept proposed lends itself to retrofit applications by allowing control and monitoring through existing electrical interfaces, and maintaining a small size to utilize available space.By logging detailed statistics of CSD use, the conditions that lead to failure can be quantified, and the accumulation of damage can be modeled.This will improve reliability and reduce maintenance cost by avoiding cascading failures without using conservative maintenance schedules.