SERVICING MONITOR

摘要

A servicing monitor which is couplable to a tool for monitoring use of the tool. The monitor comprises a vibration sensor arranged to detect vibration of the tool and to provide a vibration signal indicative of the magnitude of the tool vibration and a processor configured to receive the vibration signal and to determine whether the vibration signal exceeds a stored first threshold. The first threshold may be indicative of the tool being in use. The processor may be arranged to provide a first output signal to an operator of the tool if the cumulative period of time during which the vibration signal is above the first threshold exceeds a predetermined service interval. The processor may be further arranged to store at least a portion of vibration signal data received from the vibration sensor during a predetermined first period of time, to calculate a value indicative of the magnitude of normal tool vibration over the first period of time, and to determine a second threshold indicative of a potential tool malfunction from the normal tool vibration magnitude. The processor may be arranged to provide a second output signal to an operator of the tool if the vibration signal exceeds the second threshold. Alternatively, the first threshold may be indicative of the tool generating an impulse output and the processor may be arranged to increment an impulse count each time the vibration exceeds the first threshold and to provide a first output signal to an operator of the tool if the count exceeds a predetermined value.