摘 要随着社会的不断发展，人们的生活水平不断提高，电器的功能让变得越来

Abstract <br><br>With the continuous development of society, people's living standards continue to improve, and the functions of electrical appliances have become more and more perfect. In hot weather, people mostly use electric fans to cool down. In order to better meet people's requirements, household appliances products have begun to become intelligent. People are not stuck with traditional electric fans, but smart electric fans have come into people's eyes. The changes of electric fans can better meet people's requirements. The new generation of electric fans has more stable performance, more comprehensive functions, and more convenient for people to use. <br>This design is mainly to measure the temperature, humidity and light intensity of the environment, with the detection and display functions of temperature, humidity and light intensity. The design uses the single-chip AT89C52 as the core controller to process the transmitted data. The temperature and humidity are detected by the temperature and humidity sensor, the light intensity is measured by the photoresistor, and the data is transmitted to the AT89C52 chip for data processing through AD digital-to-analog conversion. LCD1602 display shows temperature, humidity and light intensity. In the intelligent state, in the set state, different wind speeds will be selected for work, and the control state will change with the changes of the external environment. <br><br>Keywords: MCU AT89C52; temperature and humidity sensor; LCD display;

Pick it<br><br>With the continuous development of society, people's living standards continue to improve, the function of electrical appliances to become more and more perfect. In hot weather, people mostly use electric fans to cool down. In order to better meet people's requirements, household appliances began to trend towards intelligence, people are not stuck in the traditional electric fans, but smart electric fans into people's eyes. The change of electric fan can meet people's requirements, the performance of the new generation of electric fan is more stable, the function is more comprehensive, people use more convenient.<br>This design is mainly to measure the temperature, humidity and light intensity of the environment, with temperature, humidity and light intensity detection and display functions. The data transmitted is processed by the attina AT89C52 as the core controller, the temperature and humidity sensor is used to detect temperature and humidity, the light intensity is measured by photoresist, the data is transmitted to the AT89C52 chip by AD digital conversion for data processing, and then the temperature, humidity and light intensity are displayed through the LCD1602 display. In the intelligent state, in the set state, different wind speeds are selected to work, and the control state changes with the change of the external environment.<br><br>Keywords: single-chip AT89C52; temperature and humidity sensor; LCD display;

Abstract<br>With the continuous development of society, people's living standards continue to improve, the function of electrical appliances become more and more perfect. In hot weather, people mostly use electric fans to cool down. In order to better meet people's requirements, household appliances products tend to be intelligent. Instead of sticking to the traditional electric fan, intelligent electric fan comes into people's eyes. The change of the electric fan can meet people's requirements. The performance of the new generation of electric fan is more stable, the function is more comprehensive, and it is more convenient for people to use.<br>The design is mainly to measure the temperature, humidity and light intensity of the environment, with the detection and display function of temperature, humidity and light intensity. The design takes the single chip microcomputer AT89C52 as the core controller to process the transmitted data, detects the temperature and humidity through the temperature and humidity sensor, measures the light intensity through the photosensitive resistance, and transmits the data to the AT89C52 chip for data processing through ad digital to analog conversion, and then displays the temperature, humidity and light intensity through the LCD1602 display screen. In the intelligent state, in the set state, different wind speed will be selected to work, and the control state will change with the change of the external environment.<br>Key words: single chip microcomputer AT89C52; temperature and humidity sensor; LCD display;<br>