Övervakningssystem för båtelektronik
Leisure boats of today have a lot of electronics that needs battery power to work. In additionto that electric propulsion systems have gotten more popular lately, which further increasesthe demand for high battery capacity. The batteries used are mostly lead-acid batteries and toget the most out of the batteries it is important to treat them right. To optimize the electricsystem it is important to have knowledge of how the batteries and the electric motor are usedand which factors affect e.g. efficiency and recharging.A new electric drive that can replace old diesel engines is being developed and needs testingand evaluation. To efficiently develop the electric drive a monitoring system which reads andlogs important parameters is needed. Furthermore the state of charge of the batteries needsto be monitored and a method for controlling recharging from the propeller created.Electronics to achieve this needs to be created and and its function verified.To create the monitoring system the electric drive was first studied and the parametersneeded for further development, monitoring of the batteries, and controlling of the propellercharging were determined. Thereafter electronics for monitoring the different parameterswere created one by one and then combined to a unit. Basic software to control theelectronics and communicate with a computer was created and lastly the function of all thecomponents was verified.The result is a monitoring system which reads the necessary parameters and present them tothe user on a control panel. Fundamental programming is finished but work is needed onmore advanced software. The unit is capable of logging data with adequate accuracy and sendthe data to a computer over a USB-bus.