Aiming at the deficiency of current temperature control systems for electronic nose

a new system which is easy use

rapid control and high precision is presented.With the rapid heating and cooling functions of the semiconductor cooling piece

the system which achieve the object temperature by controlling the current direction of semiconductor cooling piece

adjusting the PID parameters and compensating ambient temperature is developed.The impact of temperature on humidity and sensors is verified through the experiment.The experimental results show that the temperature control precision of the system is ±0.3℃.The gas recognition rate of the electronic nose is improved by controlling the temperature of the air chamber.