Mems-based alcohol sensor and intelligent device

A MEMS-based alcohol sensor, comprising:

• a MEMS technology-based alcohol measurement module, an MCU processor, a circuit substrate, and a housing that covers the circuit substrate, wherein the housing is provided with a first accommodating cavity to facilitate accommodation and communication, the alcohol measurement module is arranged in the first accommodating cavity, the alcohol measurement module outputs a concentration signal thereof to the MCU processor, the concentration signal is derived by a sampling and amplification circuit module, and the MCU processor processes the concentration signal and then outputs an alcohol concentration value, wherein the MEMS-based alcohol sensor is configured to directly output a digital signal readable by a digital interface with no need of an additional circuit or component, wherein the alcohol measurement module comprises a first solid electrolyte membrane arranged in the first accommodating cavity, a first catalyst wire arranged at a top surface of the first solid electrolyte membrane and electrically connected to the MCU processor, and a second catalyst wire arranged at a bottom surface of the first solid electrolyte membrane and electrically connected to the MCU processor, wherein a membrane pressing plate is further arranged in the first accommodating cavity and located at the bottom of the first solid electrolyte membrane, the membrane pressing plate fixes the first solid electrolyte membrane, the first catalyst wire and the second catalyst wire in the first accommodating cavity, and the membrane pressing plate is fixed in the first accommodating cavity by means of a sealant.