Long-term timing acquisition system for voltage of microbiological fuel cell

Abstract

The invention discloses a long-term timing acquisition system for the voltage of a microbiological fuel cell, which comprises a microcontroller, an interface for downloading program, an analogue / digital conversion module for inputting a voltage signal of the microbiological fuel cell and a memory module, wherein the microcontroller is respectively connected with the interface for downloading the program, the analogue / digital conversion module and the memory module. According to the long-term timing acquisition system disclosed by the invention, the controller AT89S52 with high performance and low power consumption is used as a core and a circuit and elements suitable for measuring a direct current small weak signal are used, thus the cost of the system is reduced, the conversion precision is improved and the long-time alternative timing measurement for the voltage of the microbiological fuel cell is realized by using program design. Compared with a traditional data acquisition system, the long-term timing acquisition system can be used for accurately acquiring data for a long term at set timing interval and has low power consumption and favorable reliability.

Description

technical field [0001] The invention belongs to the field of data collection, in particular to a system for long-term and regular collection of microbial fuel cell voltage data. Background technique [0002] A microbial fuel cell is a device that uses microorganisms to directly convert chemical energy in organic matter into electrical energy. Compared with other technologies that use organic matter to generate energy, microbial fuel cells have operational and functional advantages: high energy conversion efficiency, effective operation under normal temperature conditions, no need for waste gas treatment, no need for large energy input, in the Microbial fuel cells have the potential to be widely used in local areas lacking power infrastructure. [0003] The output voltage of the microbial fuel cell is low, generally hundreds of millivolts, which requires high conversion accuracy of the A / D converter, but does not require continuous sampling in a short time, so the conversion...

AI Technical Summary

Problems solved by technology

The traditional circuit design method is to use one or more high-precision amplifiers before the A / D conversion. Since the signal-to-noise ratio of the voltage signal is significantly reduced during the transmission process, this will not only increase the cost and complexity of the system, but also increase the cost of the system. During the actual measurement process, problems such as external power frequency interference and amplifier drift occurred, resulting in reduced measurement accuracy

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