Data processing method based on electrical impedance, ventilation system and ventilation equipment

The invention discloses a data processing method based on electrical impedance, a ventilation system and ventilation equipment, and the method comprises the steps: obtaining ventilation pressure data reflecting a ventilation state in a process of providing mechanical ventilation for a ventilation object, and obtaining electrical impedance data of the ventilation object in a ventilation process; determining the alveolar opening time corresponding to each sub-region based on the change of the electrical impedance data corresponding to each sub-region in the plurality of sub-regions of the lung of the ventilation object along with time; according to the alveolar opening time corresponding to each sub-region and the ventilation pressure data corresponding to the alveolar opening time, determining opening pressure data corresponding to each sub-region; and displaying the open pressure data corresponding to the plurality of sub-regions. The spatial heterogeneity and the temporal heterogeneity in the mechanical vent