Design of the Intelligent Air Humidifier

The ordinary sensors require manual control and do not have the indoor air humidifier test function. This design mainly adopts STC89C52RC SCM control, and connects with the auxiliary circuit to achieve automatic test and sound-light alarm of the intelligent air humidifier. The intelligent air humidifier can start, close and test indoor temperature and moisture automatically. It is small, easy to carry and has certain practical value. 1. Hardware design The system consists of the master control circuit, the temperature and moisture acquisition circuit, the buzzer, the LDE light (sound-light alarm) alarm circuit and LCD display circuit. The master control circuit conducts comprehensive processing of the data collected through the external I/O interface, and the processed data are displayed by LCD. At the same time, the processed data are compared with the preset data. Based on the comparison results, the operation of the relay circuit, the buzzer alarm circuit and the motor-driven circuit are controlled so as to achieve sound-light alarm and the automatic humidification effect. The system's overall design framework is shown in Figure 1.