Blog 26b. Trying to satisfy the electronic expansion requirements 5. - 6. |
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When I document all imaginable solution alternatives on this detailed level, it becomes more and more apparent that the caravan project is larger than expected in effort and workload. It begins to take a lot of time to collect and study data sheets in order to familiarize yourself with how the proposed solutions will function, how much they cost, when they can be delivered, and what will best will suit your caravan. We have now passed the environmental level halfway (see the thumbnail picture in top left), to describe the whole caravan and its whole environment, which may seem to take a lot of effort since it contains a wide range of complicated things. But don't worry, it is important to get the environment documented, in order to not miss anything influencing the electronic expansion from anywhere in the surrounding, but most of these will show to not influence the electronic expansion target itself. However, suppose you make mistakes on this overall level, or skip performing the environment analysis prescribed by Cpdm, then the risk is that many details have to be changed later on, which will be even more troublesome and costly, the consider them right now. Also, late changes in details often result in malfunctions and poor quality, caused by a lack of early analysis of how they function and interact. Note that up to requirement 5., they are refined from the environment restrictions activity Pt.0.R., and from 6. they are new. |
As said before, note that what is appearing in green text, is the environment restrictions from the passed activity Pt.0.R. The black text is what now is added as the alternative solutions from this activity. Requirement 5.A. and 5.B. specifies that the overall functionality must not be diminished by the electronic expansion, and a good solution to this is to begin with changing the battery and its charger. Up to now the electronic expansion requirements number 1 to 5 are refined from the environment restrictions. The rest of the requirements from 6.A. and onwards are not refined from anywhere but are newly captured. Requirement 6.A. specifies how much energy must be generated by the solar panels, and determines a minimum capacity of 36 Watts. Requirement 6.B. specifies how the battery must be charged, and propose an MPPT charger, which must be able to run parallel to a 230 Volt charger. Requirement 6.C. and 6.D. Also propose upgrade of the battery capacity |
