Design of electric circuit for dynamic model information collection in electronic nose

The dynamic detection technology is a hot direction of electronic nose. The circuit of hardware that can change the parameter of the circumstance is the key in dynamic detection. Controlling model of temperature automatically and picking up model of signal are designed in order to suit for the dynamic measure. The first model can heat oxide semiconductor gas sensor array dynamically. Applying this dynamic heat circuit to the experimentation system of electronic nose, we did the identification experiment of three kinds of soft drinks under different condition. Results show that precise ratio of recognition reaches 100%.