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人教版普通高中课程标准实验教科书《物理选修3-2》“传感器”一章,以前沿科技为导入,内容新颖,与实际应用联系紧密,有实用价值.对于教师而言,要讲好这一部分内容,却具有很强的挑战性,其中“传感器的应用实验”一节应用集成斯密特触发器来设计一个光控模仿路灯难度最大.不仅电路的调试有一定难度,而且从教学的角度看,如果不通过实验加以说明,大部分学生就很难准确理解其工作原理和一些相关表述.如
PEP Ordinary High School Curriculum Standards Experimental Textbook “Physical Elective 3-2” and “Sensors” chapter, introduced with cutting-edge technology, novel content, close contact with practical applications, practical value. For teachers, to speak This part of the content, but it is very challenging, in which “application of the sensor experiment ” section integrated application Schmitt Trigger to design a light control imitate the street lamp is the most difficult. Not only the circuit debugging has a certain degree of difficulty, but also From the teaching point of view, most students will have difficulty understanding exactly how they work and some related expressions if they are not explained through experiments.