Inductive sensing with TI FemtoFET and CC1350 Wireless MCU
Water and heat meters share multiple system building blocks, such as the metrology sub-system and the application sub-systems, the Wireless communications part, the InfraRed optical port or the power solution. In this section, we will cover a new ultra-low cost single-chip LC-sensing solution utilizing the CC1350 Wireless MCU and its Sensor Controller Engine. Two external LC-tanks with a TI FemtoFET device each implement two rotation detection sensors, which measure the rotation of a half-metal/half-nonmetal disc, often used in mechanical water meters. The full solution is named TIDA-01228 reference design and represents the metrology sub-system for a RF-enabled water or heat meter add-on module with inductive sensing.