Improving the functionality of a prosthetic hand through the use of thick film force sensors

A prosthetic hand has been instrumented with a range of sensors to measure grip force with the primary objectives of detecting touch and the onset of slippage of an item grasped by the hand. Two types of sensor have been used for this purpose: piezoresistive sensors to measure and monitor static forces and piezoelectric sensors to measure and monitor dynamic forces. All sensors have been fabricated using thick film printing techniques and their location and placement upon the prosthetic hand has been chosen for optimal performance.