CO
2
concentration detection based on single chip
microcomputer and display system design
Design Description
With the development of social economy, the general improvement of people's
living standard, the air quality requirements are constantly improve, especially in
large and medium-sized cities air pollution is serious.Carbon dioxide gas to human
crops growth plays a very important role of life.So the research of CO2 detection
device is very necessary, and the growth of crops to the health of our people test value,
different plants have different demands for the concentration of CO2.This paper
mainly in view of the design of carbon dioxide concentration in the air
system.Considering the precision of the system, stability, and economical
requirements after the three aspects, determine the AT89S52 single chip
microcomputer as control core, with high cost performance sensors, to achieve
accurate detection of the concentration of carbon dioxide.
The design of a total of three parts, with CO2 concentration sensor TGS4160
detect CO2 concentration, the control unit with AT89C51, LED digital tube display
module.The whole system is easy to operate, reliable operation, easy to expand,
etc.System of small size, simple operation, strong flexibility, according to different
environment, the different requirements of different crops can be modified at any time
and place limit alarm value.This system has the characteristics of strong function of
low cost, suitable for all kinds of testing environment.
Keywords ：AT89C51，TGS4160，CO
2
Concentration，LED
