Analysis on Time-effectiveness of Early Warning System of Combine Harvester

Jam fault of combine harvester is a typical failure, which often leads to damages of mechanical transmission system. Jam fault alarm system has been used as an assistant means to warn the operator in traditional way, but the jam fault has always occurred while alarming. The ideal solution to jam fault, thus, is early warning so that proper operation can be made by the operator before it takes place. In that case, high time-effectiveness of early warning system is essential for jam fault diagnosis and decision-making. In this paper, the feasibility of early warning of jam fault is researched and the devices aiming at improving the time-effectiveness are designed. Experimental results both in laboratory and field harvesting with BILANG harvester show that an early warning decision can be made within 200ms, which satisfies the requirement of early warning.