High-precision low-power-consumption fully-integrated portable electronic nose

Abstract

The invention discloses a high-precision low-power-consumption fully-integrated portable electronic nose which comprises a sensor array used for realizing detection of target gas; the interface circuit is used for controlling the sensor array to detect target gas according to the current working mode and acquiring and processing related sensor signals; and the smell identification unit comprises a multi-layer perceptron, and the multi-layer perceptron adopts a multiplex pipeline structure and classifies and identifies the sensor signals processed by the interface circuit. The portable electronic nose provided by the invention solves the problem of poor selectivity of an MOS gas sensor, can expand data required by smell recognition, can be well applied to the high-precision and low-power-consumption field, can be realized on one chip, and compared with a traditional smell recognition system, the portable electronic nose has the advantages that the portability is improved, and the cost is reduced. And hardware implementation of multilayer perceptron odor classification is innovated, so that the data throughput rate and the chip area of the multilayer perceptron odor classification hardware are well balanced.

Description

technical field [0001] The invention relates to the field of semiconductor integrated circuits, in particular to a fully integrated portable electronic nose with high precision and low power consumption. Background technique [0002] With the rapid development of artificial intelligence and sensing technology, the demand for using portable equipment bionic sense of smell is becoming more and more extensive, such as gas quality monitoring, disease diagnosis, harmful gas monitoring and indoor atmosphere detection, etc., so people urgently need a high-precision low-power A portable electronic nose is used to realize the bionics of smell. [0003] Early electronic noses used discrete board-level devices to build gas detection circuits combined with odor recognition on the PC side, such as the document "Discrimination of Aromas in Beer with Electronic Nose". The gas detection circuit built with discrete board-level devices has the problems of high power consumption and poor port...

AI Technical Summary

Problems solved by technology

However, it still needs the cooperation of an external PC, which cannot meet people's requirements for portability.

Later, some people used known data to realize odor recognition in FPGA, but ignored the odor collection module, which is still not a complete electronic nose that can be used portablely.

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