#26a Trying to satisfy the electronic expansion requirements 1. - 4.
Christer Sandahl
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In previous blogs #23 and #24, at activity Pt.1.R., the requirements for the caravan electronic expansion were captured In previous activity Xa.a., suppliers' data sheets have been collected and studied. Critical and complex samples have been ordered from potential suppliers, to be evaluated in reality, and when necessary, further at the laboratory desk.
It is now time to scan through all electronic expansion requirements and propose solutions that may satisfy each of these requirements. Often there are several alternative solutions to the same requirement, and all of these alternatives must be included in the result of this analysis. First, when all solutions have been documented, it gets easier to see the big picture of how the alternatives would interact with each other and which of the solutions to prefer.
More of this will come in the next blog, where I will show how to draw preferred solutions together in a typical (white-box) architecture.
Now note that what is hallways appearing in green text, is what have already been documented in past activities, in this case the green text emanates from 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 1. specify that the caravan must be continuously electrified, even when wired connection to 230 Volt AC is absent. The proposed solution to this are solar panels, either mounted on the roof or placed out on the ground. In the caravan there is already a battery to save the energy, during the dark night.
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Requirement 2. specify that the electronic expansion may not jeopardize the caravan traffic safety, solved by marking all essential parts that may not be torched.
Requirement 3. specify that the caravan shell must still be intact and water tight, and propose adequate solution methods.
Requirement 4. specify that the interior may not be damaged or put out of order, and propose some methods to achieve this.