Abstract:

In order to accurate measure the tobacco thickness, reliably distinguish flue-cured tobacco identity, solve the question of the experimental personnel rely on their senses to measure the tobacco thickness for a long time, the tobacco thickness electronic measuring instrument which set high precision, miniaturization, and portable at an organic whole was designed. The instrument included mechanical measuring device and measurement and control instruments. Using intelligent sensor technology and the follow-up hardware circuit and software system to realize the measurement of tobacco thickness. And then the sensor and instrument were demarcated and calibrated. Finally, the thickness of flue-cured tobacco was monitored all day. The results showed that the sensor linearity was less than 1.2%, the maximum indication error of instrument was 4 μm, meanwhile the return error was 2μm. The leaf thickness value began to fall at about 9:00, and reach the extremum between 13:30 and 15:30, generally didn’t change at night. The leaf thickness was able to meet the needs of experimental personnel who measure tobacco thickness outside.