Design of Beacon Machine Based on Beidou Short Message Communication and Combinatorial Model Algorithm
Aiming at the problems of low recovery efficiency and large power loss of traditional beacon machine after landing,a new bea-con machine which can indicate the landing position is developed.In the hardware part,the beacon adopts low power single-chip micro-computer STM32L431 to control the GPS positioning module and Beidou short message module,and collects the power supply circuit data in real time.In the software part,the combination model algorithm is used to predict the position information of the next moment,and the"sleeping work"mode is added to realize the cyclic switch with the"normal work"mode.The experimental results show that the difference between the combined prediction results and the field results in the direction of longitude,latitude and height is within±25 m,that is,the drop point search can be carried out in the space centered on the combined prediction coordinates with dimensions of 25 m×25 m×3 m,which improves the recovery efficiency.The dual-mode switching style reduces the energy loss to 64.7%of the tradi-tional beacon,and extends the endurance by 11.16 h,which has high application value.
beacon machinepoint predictionBeidou short messagecombination modelrecovery efficiencylow power consumption
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