Hardware accelerator for low-power sensor hub MCU to process sensor fusion algorithm

Kee, Minkwan; Seon, Hyun-su; Kwon, Sungho; Lee, Jong-Sung; Park, Gi-Ho

doi:10.1109/isocc.2015.7401782

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2018

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“…This means that the data-processing energy is also an important factor and thus should be reduced at the sensor node. Many means of reducing the processing energy exist, e.g., replacing the MCU with an field programmable gate array (FPGA) [4][5][6], employing a mixed FPGA/MCU [7,8], and improving the MCU algorithm [9,10].…”

Section: Introductionmentioning

confidence: 99%

Clock-Frequency Switching Technique for Energy Saving of Microcontroller Unit (MCU)-Based Sensor Node

Duangmanee

Uthansakul

2018

Energies

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In this paper; a technique is proposed for reducing the energy consumption of microcontroller-based sensor nodes by switching the operating clock between low and high frequencies. The proposed concept is motivated by the fact that if the application codes of the microcontroller unit (MCU) consist of no-wait state instruction sets, it consumes less energy when it operates with a higher frequency. When the application code of the MCU consists of wait instruction sets; e.g., a wait acknowledge signal, it switches to low clock frequency. The experimental results confirm that the proposed technique can reduce the MCU energy consumption up to 66.9%.

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