This thesis is connected to the RADCUBE project, which purpose is to develop a
small satellite. The function of this satellite is to measure the magnetic and radiation field
surrounding the Earth, with this contributing to the space weather research. The subject
of this thesis the development process of RADCUBE’s service module (EGSE), which
main task is to charge and test the accumulator of the satellite.
The main parts of my work are formed by the design of the accumulator charger
synchron buck converter, the constant current discharge circuit and the voltage and current
measurement circuits. Furthermore I paid huge attention to the safe handling of the
accumulator, so I evolved multiple level, redundant protection.
At the beginning of the development I examined the specification, and created the
block diagram of the unit. After that I elaborated the schematic of the submodules, and
then I proved the proper working of the most important ones with simulation and breadboard
tests. Before the design of the printed circuit board I chose a box for the EGSE.
The last steps were the software design and implementation and the test procedure.