Power Board Engineering Model Design of A4/NEO-1 Satellite Multispectral Camera

Currently, the Research Center for Satellite Technology is developing multispectral line scanner camera. It consists of several subsystems and requires different power rails, posing various challenges. The power board is one of the three boards in this camera responsible for supplying and monitoring power, board temperature, driving heaters, and stepper motors to maintain heater temperature and adjust lens focus points. The engineering model of the power board has been developed and tested. The voltage regulator, signal conditioning, multiplexer, and driver are functioning well. Two types of voltage regulators are utilized: switching and linear, both providing outputs that are closely matched the set values where the difference between actual and desired output voltage regulator is less than 1%. The output of the signal conditioning aligns with theoretical expectations. The error is less than 9% from full range ADC. The multiplexer output is also satisfactory, with a minor acceptable error that is under 4%. However, further development and testing are required for temperature and current sensors. Additionally, inrush current remains an issue in this engineering model. Nevertheless, the engineering model shows potential for development into a flight model.