Last year, we had some very exciting students in our undergraduate programs in Engineering at the University of Namibia. In this post and the next one, I will upload some images from the design projects of two student groups that I worked with.

I worked with Ester Hamatwi (Electrical Engineering student) and Linda Shitumbapo (Electronic Engineering student) on their project titled the Design of an Automatic Water Level Control System for the Tsumeb Water Supply. Each student was tasked to design one part of the system.

Linda designed an automatic water level control system that uses ultrasonic sensors to keep track of the water level in the main reservoir to avoid overflow. According to the design, the water level signal is transmitted to the speed control circuit which ensures that the motors are run at the desired speed.

Ester designed designed a solar photovoltaic system that supplies power to the electric motors and the electronics components in the control circuit. The work also included the design of a variable speed circuit for the DC electric motors that operate the pumps for each borehole. The variable speed circuit regulates the speed of these motors to a desired speed depending on the water level obtained from the Electronics control system.

This was the first design of the system. There are still so many improvements that have to be done in order to come up with a system that can be implemented practically. The students used some low cost components to demonstrate their design. Here are some shots taken on the exhibition day.

Linda explaining how her part of the design works

Linda explaining how her part of the design works

Esther standing by Linda's design work

Esther standing by Linda’s design work

Ester explaining how her part of the design works

Ester explaining how her part of the design works

Ultrasonic sensor used in the project

Ultrasonic sensor used in the project

The mock-up demo of the design

The mock-up demo of the design