In oil fields, long-distance pipelines, remote gas wells and other sites without mains power supply, flow meters need to rely on battery power and operate for a long time (usually requiring 3-5 years). This poses extremely high requirements for the power consumption design of the flowmeter motherboard.

Recently, researchers have proposed a hierarchical wake-up low-power motherboard architecture. This architecture divides the motherboard into three levels of energy consumption modes: “sleep standby work”: during most of the time when there is no traffic, the motherboard enters a microampere sleep state; When the sensor detects the flow pulse, it quickly wakes up the core processing unit to complete the measurement and storage; Wake up the communication module for data transmission at a scheduled time or after reaching the set cumulative amount.

Experimental data shows that the motherboard using this architecture can reduce the average operating current to below 20% of the traditional design under typical working conditions, effectively extending the battery power supply time. This technological direction is of great significance in promoting the popularization of smart meters in non electric scenarios.