Aiming at the problem of the workers can not adjust temperature accurately and have low efficiency on the production line of the electric iron

a set of online temperature measurement system for the electric iron is designed.The hardware circuit’s principle diagram and software design’s flow chart are described

and the error is corrected.The error is within the range of 1 ℃.The system can show not only real time temperature

but also the maximum and the minimum temperature

which is beneficial to adjust the temperature rapidly and accurately in multi-position on production line;and it realizes communication with the host computer

which provides convenience to carry on quality management for the manufacturer.