Abstract: Traditional appliances of kitchen pay more attention to the improvement of basic functions, but with the rapid popularization of intelligent technology, there are more and more intelligent elements in the appliances of kitchen. The non-contact proximity sensor based on infrared pulse is applied to kitchen electricity, the intelligent interaction between users and appliances is realized. Firstly, the working principle of the sensor is analyzed, then the working circuit is designed according to the actual scenario. Finally, the feasibility of the sensor is verified by test and research. The influence factors of illumination, transmission ink, reflection color and sensing area were analyzed, results show that the illumination has no effect on the application of the sensor; the sensor works normally only with infrared ink, the color of the obstacle will affect the sensing distance. According to the usage habit of user, the induction area is designed and the induction success rate is high.

Key words: Non contact, Proximity induction, Application research