FPGA-based gas sensor data acquisition and wireless data transmission system

Abstract

The invention relates to an FPGA-based gas sensor data acquisition and wireless data transmission part. The system comprises a gas-sensitive data conversion part, a data processing part and a data transmission part. According to the FPGA-based gas sensor data acquisition and wireless data transmission part, the change of resistance values of a gas sensor is collected and converted into a sixteen-bit digital signal by the gas-sensitive data conversion part; preprocessing, caching, comparison and coding output are carried out on data through the data processing part; the coded data is wirelesslytransmitted to a mobile phone through the data transmission part, and finally, the gas concentration is displayed on a mobile phone terminal in real time. According to the system scheme, data acquisition and processing of the multi-channel gas sensor can be achieved simultaneously, the data is wirelessly transmitted to the mobile phone terminal through a Bluetooth, and the design of an FPGA-baseddigital control circuit improves the signal acquisition accuracy and data processing speed, reduces the number of peripheral control circuits, and reduces the indoor wiring difficulty. The characteristics make the FPGA-based gas sensor data acquisition and wireless data transmission part show a great application prospect in the fields of Internet of things, smart home and the like.

Description

technical field [0001] The invention relates to a back-end processing circuit of a gas sensor, in particular to an FPGA-based gas sensor data acquisition and wireless data transmission part. Background technique [0002] The Internet of Things refers to the real-time collection of any object or process that needs to be monitored, connected, and interacted, and its sound, Various required information such as light, heat, electricity, mechanics, chemistry, biology, and location can be connected through various possible networks to realize the ubiquitous connection between things and things, and between things and people, and realize the intelligence of things and processes Perceive, identify and manage. [0003] People spend 70-90% of their time indoors, and indoor air quality has a particularly important impact on human health. Therefore, real-time monitoring of indoor air quality and harmful gases is an important component of the indoor Internet of Things - smart home one ...

AI Technical Summary

Problems solved by technology

Collecting and sending data in this way consumes a lot of microprocessor resources. At the same time, a lot of indoor wiring is not only unsightly, but also prone to safety hazards.

Images