Design of Smart Humidifier Based on Voice Control

Nowadays air pollution is serious. A humidifier can effectively improve the ambient humidity, and the negative oxygen ions released by its atomization are beneficial to people’s health. However, the function of the humidifier is relatively simple at present. An STM32 is used as the core processing unit, a speech recognition module based on LD3320 and a speech synthesis module based on SYN6288 are chosen as the control mode, a more practical and convenient smart humidifier is designed in this paper. ADHT11 temperature and humidity sensor are used to collect ambient humidity, and the collected information is displayed in OLED after MCU processing. If the current air humidity is less than the set value and the water level reaches the standard, the humidifier will begin to humidify. Voice warning is issued when the water level of the humidifier is too low. Besides, the opening and stopping of humidification can be controlled by voice. The testing results show that the humidifier designed is stable with a high-speech recognition rate.