Proximity switch assembly and calibration method therefor

A proximity switch assembly comprising:

• a proximity switch comprising a proximity sensor providing an activation field;
• control circuitry monitoring a signal responsive to the activation signal, determining when the signal exceeds a threshold for a time period, and calibrating the signal when the maximum signal exceeds the threshold for the time period and reaches a peak value.

A proximity switch assembly comprising:

• a plurality of proximity switches each comprising a proximity sensor providing an activation field;
• and
• control circuitry processing the activation field of each proximity switch to sense activation, said control circuitry monitoring signals responsive to the activation fields, determining when a maximum signal exceeds a threshold for a time period, and calibrating the signals when the maximum signal exceeds the threshold for the time period and reaches a peak value.