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Low Power Current Sensing Node Powered by Harvested Stray Electric Field Energy / Effektsnål strömdetekterande nod driven av utvunnen strö-energi från elektriska fält

In this thesis, the possibility of harvesting energy from a multicore power cableconnected to a power outlet is presented and evaluated. By surrounding a powercable with a conductive material connected to ground, it is shown that the dif-ference in potential between the power cable and the conductive material causesa capacitance which can charge a capacitor that in combination with an energymanagement circuit can be used to wirelessly transmit data with an interval de-pending on factors like the length of the surrounding material and the type ofcable it is placed around. In addition to this, a technique to, in a non-invasiveway, sense whether there is alternating current flowing in a multicore power ca-ble is brought up. The results show that this technique can be used to detectalternating current without having a device connected between the power cableand the power outlet. These two sections combined are used to design a surveil-lance system that should monitor consumer electronics in the home environmentwhere there is a fire hazard. The system should send out a warning signal thatis visible for the homeowner to remind the user to switch off the power of theelectronic devices before leaving home.

Identiferoai:union.ndltd.org:UPSALLA1/oai:DiVA.org:liu-121520
Date January 2015
CreatorsHolby, Björn, Tengberg, Carl-Fredrik
PublisherLinköpings universitet, Elektroniska Kretsar och System, Linköpings universitet, Tekniska fakulteten, Linköpings universitet, Elektroniska Kretsar och System, Linköpings universitet, Tekniska fakulteten
Source SetsDiVA Archive at Upsalla University
LanguageEnglish
Detected LanguageEnglish
TypeStudent thesis, info:eu-repo/semantics/bachelorThesis, text
Formatapplication/pdf
Rightsinfo:eu-repo/semantics/openAccess

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