Development of A Tablet-based Ultrasound System

This is a portable ultrasound system that produces high resolution images. The miniaturized ultrasound system runs on the tablet computer (see Fig. 1) under the Windows 7 Touch interface, for multi-touch operation. Users can also connect the tablet to a printer or  for image output. To fulfill the diverse needs of mobile computing, the tablet can also be used on the dock (see Fig. 2 & Fig. 3), on the go, fixed onto a wall, or outputted to an HDMI-enabled TV or monitor. As the lead designer, Yu-Hsiu Lee is responsible for the mechanical design of the medical tablet with a built-in ultrasound engine.

Fig. 1 Schematic drawing of the tablet-based ultrasound system

Tolerance Design

In mass production, it is common practice to consider the trade-off between assembly tolerance/quality and manufacturing capability/cost (see Fig. 1). The concept of tolerance design help assigning appropriate tolerance values with reasonable manufacturing cost meanwhile achieving the desired overall performance. This tool is also useful to analyze function anomaly and re-adjust origianl tolerance values.

 Fig. 1 Schematic drawing of trade-off between cost and performance

Zebra ZE500 Printer

ZE500 is an industrial label printer. As a former employee of Jabil design services, Yu-Hsiu Lee was responsible for mechanical related issues of control panel module for the OEM client Zebra Technologies.

Fig. 1 Zebra ZE-500 series label printer (courtesy of Zebra Technologies)

iRobot Roomba 700 Series

Roomba 700 series are high-end household vacuum cleaning robots (see Fig. 1). As a former employee of Jabil design services, Yu-Hsiu Lee was responsible for proposing possible cost reduction opportunities.

 Fig. 1 iRobot Roomba 700 series (courtesy of iRobot)

Measurement and Mechanical Engineering Laboratory

Measurement and Mechanical Engineering Laboratory is a required course for junior students in the department of mechanical engineering at National Taiwan University. This course consists of miscellaneous topics of different fields such as material science, solid mechanics, thermal science, control, and fluid mechanics (see Fig. 1). Students can access equipment (or even build one on their own) which measures/demonstrates displacement, velocity, acceleration, force, torque, pressure, temperature, vibration, and other meaningful physical quantities.

Mechanical Design Theory Semester Project: Ground Robots

Ground robot design and realization was a semester project of Mechanical Design Theory. Students were asked to build their own robots (no wheels allowed) to pass 3 predetermined stages as shown in Fig. 1. Stage A was a rectangular tunnel, stage B was a little hill, and stage C was a pair of cylindrical rods. Weight, successful rounds, total mileage, and time consumed were all performance indices taken into scoring.

Fig. 1 Racing field of ground robots

Virtual PID Experiments Using LabVIEW

In class of Automatic Control, students learn a lot of tools like root locus and Bode plot to analyze the plant under study. However, even with the aid of software simulation like MATLAB, students who first reach this subject usually wonder how simple control scheme like PID is implemented when it comes to real-world applications. PID control, though pretty fundamental, plays an important rule in industrial applications. When reaching such topic, professors usually asks those who are interested in this to build a circuit like Fig. 1 to get some insights.