Method for automatic titration of PEEP using electrical impedance imaging, ventilation system and ventilation device

A method for automatic PEEP titration using electrical impedance tomography, a ventilation system and a ventilation device, the method comprising: determining a set change process of the ventilation device under a plurality of PEEPs, the set change process being used for PEEP titration; according to the instruction for starting PEEP titration, ventilation is carried out on the ventilation object under the initial PEEP so as to carry out PEEP titration; in the PEEP titration process, ventilation is carried out under a plurality of PEEPs according to a set change process; in the PEEP titration process, electrical impedance imaging data of the ventilation object are obtained, and data of target titration parameters are obtained at least based on the electrical impedance imaging data; and when PEEP titration is completed, obtaining a titration result according to the data of the target titration parameters obtained in the PEEP titration process. According to the method, the PEEP is automatically adjusted accordin