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Involuntary human hand motions, or tremors, are normally regarded as a non-stationary process. Traditional analysis methods approximate tremor signals as stationary processes. In this paper, we present a novel tremor detection method using Empirical Mode Decomposition (EMD) and Hilbert-Huang Transform (HHT). The results are expected to be helpful for realtime tremor suppression.

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This project developed a low cost solution to provide personally owned electronic test equipment to students in an advanced analog electronics course to enhance their learning associated with electronic laboratory experiments. The project included the development of a sine wave generator, logic pulse signal, and a programmable synchronous serial interface. The project is based a Cypress programmable system on a chip or PSoC and a LabVIEW PC application. The PSoC allows for a single chip solution of the sine wave generator by creating a programmable square wave that is then sent through an internal 4-pole filter to shape the desired sine wave. This approach is novel when compared to direct digital synthesis or look-up tables. The PSoC also creates a programmable logic pulse output to provide a variable duty cycle square when required. The programmable synchronous serial interface allows students to select the appropriate timing diagram and then specify the desired data to be transferred. The desired data is then transfer to the PSoC which ultimately controls the corresponding synchronous serial device eliminating the need for the analog student to write software to control the various devices. This feature allows students to study synchronous serial devices such as DAC's, ADC's, digital potentiometers, etc. without the confusion sometimes associated with programming a microcontroller to accomplish the task. This allows the students to concentrate on the analog electronics at hand, and not waste time attempting to create software. The project allows the students to focus their time and energy on the analog fundamentals and ultimately enhances their educational experiences. The overall design of the project, the educational benefits, and assessment data from the use of the project will be presented in this paper.