Abstract: As examples of three different applications of resistance sensors, based on the students＇ innovative designed experiments, we verify sensor＇s physical principle and engineering application. The developing implementation mode of designed experiment research in the student is introduced in detail. According to the principle of physics and electronic technology foundation under the guidance of the teacher, students start from the data access. plan designed experiments independently, complete the device that verifies the physical principle of resistance sensor and designs the sensor in the engineering application, to make students better to grasp the theoretical knowledge in physics, improve the students＇ application ability of physical knowledge, independent thinking and scientific re- search innovation ability.

Key words: resistance sensor, verification of physical principle, engineering application, designed experi- ment