Development of vehicle-mounted air purifier control board
Software environment: C
Hardware environment: MCU
Project description: Realize air quality detection and purification
■ Provide a master switch, a working indicator, a Micro USB power supply interface, a negative ion module, an ozone module, a small fan, and a polymer lithium battery.
■ Connect the power cord and close the main switch:
When the car is powered normally, the negative ion module starts to work, the small fan starts to work, the polymer lithium battery is charged, the ozone module does not work, and the work indicator lights work;
When the car does not supply power, the negative ion module stops working, the small fan stops working, and the polymer lithium battery supplies power to the ozone module. The ozone module works for 20 minutes per hour and shuts down for 40 minutes. Cycles in turn, and the work indicator lights work;
Whether the car is powered or not is a signal used to control the activation of the negative ion module or the ozone module.