Design of a Medical Sensor´s Key Circuits Based on Evolvable Hardware

This paper deals with a new way to design the medical sensor, combining evolvable hardware with traditional Chinese medical treatment mechanisms, designs the key circuits of EMG sensor in health care field by evolution. At first a framework of evolvable sensor is presented based on the characteristics of conventional sensor and evolvable hardware. Then the way of hierarchical structure evolution which suits the evolvement of analog sensor circuit is proposed integrated with the hierarchical coding characteristics of GA and analog circuit. Low pass filter circuits in the sensor are evolved successfully in the usage of an improved elitist preserving and adaptive GA through off-line evolution, and simulated by OrCAD/Pspice later, and the nominal value is used in the work to the amendment and correction of evolved circuit parameters as well, which attempt the meaningful explore to the entire design of the evolvable sensor and the transform from EHW theory based on analog circuit to practical application.