Utveckling av Breakoutbox för Fuel Flow Transmitter
Development and construction of an electronic Breakout box is the main work for this thesis. The box is a part of a test system for the component Fuel Flow Transmitter and should convert signals to be suitable for a frequency counter. A previously constructed Breakoutbox for this purpose is being old and needed to be recreated. So SAAB Aerotech, Aircraft services, the company for the thesis work wanted to construct a new, more sustainable Breakoutbox adapted to a more modern technology. The signals to the box comes from the transmitter and should be converted to suitable signals for a frequency counter so it can show pulse and time difference between the signals. Both a digital and an analog approach for this purpose have been examined in the work. The result was that the analog solution worked better because the conversion could be performed with OP-amplifier instead of algorithms in a microprocessor. Many problems occured in this thesis work that wasn?t included in the beginning so the most important property proved to be the ability to solve this problems. The Breakout box finally met the requirements from the specification and will in the future be used instead of the old Breakout box as a component in the test system for the Fuel Flow Transmitter.