Table 1 The notations used in power consumption model
From: A design and implementation of low-power ultrasonic water meter
notation | Description |
|---|---|
EMCU | Supply voltage of the STM32L162 microcontroller (MCU) |
EFE | Supply voltage of the MAX35101 front-end chip (FE) |
\( {I}_{active}^{MCU} \) | Current consumption of the MCU in the run mode (active state) |
\( {I}_{active}^{FE} \) | Current consumption of the FE in the active state |
\( {I}_{idle}^{MCU} \) | Current consumption of the MCU in the idle mode (idle state) |
\( {I}_{idle}^{FE} \) | Current consumption of the FE in the idle state |
\( {T}_{active}^{MCU} \) | Operating time of the MCU in the active state |
\( {T}_{idle}^{MCU} \) | Operating time of the MCU in the idle state |
\( {T}_{active}^{FE} \) | Operating time of the ToF in the active state |
\( {T}_{idle}^{FE} \) | Operating time of the FE in the idle state |