3D Shape Measurement

This is the first complete measurement system that I designed in 1989. It is an automatic shape sensing and measurement system. I programmed a 6502 microprocessor to control a solenoid valve and to record signal outputs of a goniometer that I had built into a probe with a moving arm. I interfaced this with a 4 axes DECKEL CNC machine to accurately measure the internal 3D shapes of prosthetic sockets and external shapes of their corresponding plaster casts. I used Unix workstations and imported the data into an FEA package to visually and digitally analyse these shapes.

Above s a Digitized CAT CAM Socket and Below is the same socket being digitised.

Above is the probe inside the socket measuring 3D coordinates of points on the internal surface