Ventilation fan and extension mechanism interlocking control system and method

The invention relates to a ventilator and extension mechanism interlocking control system and method. The ventilator and extension mechanism interlocking control system comprises a ventilator, a power supply, a PLC module, an extension control module, a touch control module, a detection module and an indicator lamp module. A CAN bus is used for control in an original ventilator control system, an RS485 serial port communication function of an expansion mechanism is used, ventilator control and the expansion mechanism are connected to a touch screen, touch screen configuration software is developed for centralized control, and then the automatic interlocking control function of the ventilator control and the expansion mechanism is achieved. The technical problem of automatic interlocking control between the ventilator and the expansion mechanism is solved, a touch screen configuration control function is added on the basis of original mechanical switch control, the ventilator and the expansion mechanism are re