This thesis attempts to study an innovative architecture for an efficient energy generatorrnwhich powers a wireless sensor network used for Aircraft security Monitoring. This rnbattery-free generator captures energy from its environment due to transient thermal rngradients as a main source, and vibrations as a secondary source allowing early biasing rnof the generator and stores this energy in ultra capacitors. In this way, this multi-source rnarchitecture benefits from the synergy between energy scavenging and harvesting: rnvibration bring low but early and permanent energy. They also contribute to energyrnharvesting d u ri n g cruise while thermal gradients have vanished. rn rnThis masterâ€™s thesis deals with the development of a power source based on Micro electricalrnmechanical system thermoelectric generator. The identification of model parameters is based onrna measurement with special test bench. The practical implementation of theoretically outlinedrnprinciples is illustrated on jet engine control unit with the thermoelectric generator for thernelectric power backup. The conclusion deals with an application of the presented technologyrnin an aircraft-specific field and the associated issues.rnThe proposed power source can be used for supplying of an aircraft-specific autonomousrnsensor unit. System-level point of view on the autonomous sensor includes the sensor with datarnacquisition and transmission, energy harvester (thermoelectric generator) with system voltagernof 3.3V,power rating of 100mW (corresponds to current consumption about 30mA); continuousrnoperation time: 30min; operating temperature range: -50 Â°C to +85 Â°C. Proposed thermoelectricrngenerator provides tens of milliwatts of the electric power on the voltage level of 3.3 V.rnVarious serial/parallel/serial-parallel combinations of 1-4 thermoelectric modules will berntested consequently with a boost or buck boost converter.