Abstract
Recently, researchers investigating human machine interfaces (HMI) have been trying to create easier to use interfaces by taking advantage of the communication and manipulation skills natural to human beings. HMIs with a direct sensing feature can be developed for a wide range of applications. However, because of the inherent limitation posed by input devices such as the mouse, keyboard and touch-sensitive panels, it is not possible to utilize the abundant forms of natural human expressions. In this paper, an effective non-contact technique for the measurement of the human hand motion with application to HMI has been reported. We propose a method for detecting the motion f a subject's hand with respect to a given measurement electrode by measuring the current generated due to the change in the capacitance between a subject's hand and the measurement electrode. This method effectively describes the behavior of the waveform of the induced current.
