Development of an Embedded Control Platform of a Continuous Passive Motion Machine

In order to control the continuous passive motion (CPM) machine for injured fingers, we develop an embedded control platform. We first bring forward the philosophy of function modularization design for control platforms. Then we actually begin to develop an embedded control platform of the CPM machine by using the method of function modularization. The core of the control platform consists of two main parts: the data acquisition function module and the motor control function module, both are based on the serial peripheral interface (SPI) network. The whole control platform is open-ended for new functions and applications. It can be easily expanded if we add new modules to the SPI network. Primary experiments have proved that the control platform works well and the design method of function modularization provides a new method for the design of control platforms