dc.description.abstract | In recent years, the concept of energy conservation and carbon reduction is noticed by people. Fuel cell is a clean energy, it only need hydrogen and oxygen to generate energy, and only produce water. However, hydrogen is not easy to obtain, therefore how the hydrogen reaction in the most efficient way would be the most important issue. It has two ways to use hydrogen in efficient way; the first one is change inside of fuel cell to improve the efficiency of chemical reactions, the second one is control the hydrogen to get high efficiency use of hydrogen.
This thesis is using the second way, the use of on-off valve to open hydrogen, let constant flow into the fuel cell flow field plate, the excess unreacted hydrogen will be full of the fuel cell flow field plate, to detect the rapid decline current in the hydrogen is exhausted, and open the on-off valve, the hydrogen flow into fuel cell until full of the flow field plate. When the current rapid decline because of fuel cell internal hydrocephalus, open the on-off valve to purge the fuel cell.
This thesis use ARM chip as a controller, and use Microsoft Visual Basic(VB) to write the interface between controller and computer, using RS-232 communication interface to communicate with the ARM chip, and display the value of current and voltage on the computer screen, in order to record and analysis.
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