Patent ID: 11938784
Assignee: CENTRAL SOUTH UNIVERSITY
Field: Transport (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 7:
8. The health protection method for passengers on a train in a polluted indoor environment according to claim 7, wherein the step of generating the ventilation strategy of each carriage of the train in the step S6 is, specifically, to generate the ventilation strategy in the following rules:
if AO<min(AIR), it is deemed that an indoor air pollution degree of the train is lower than an outdoor air pollution degree of the train, and then an outdoor air circulating ventilation system is stopped and an indoor air circulating filtering apparatus is started, thereby preventing outdoor air from causing secondary pollution to an indoor environment of the carriage;
if AO>max(AIR), it is deemed that the indoor air pollution degree of the train is higher than the outdoor air pollution degree of the train, and then the outdoor air circulating ventilation system is started and the indoor air circulating filtering apparatus is stopped; and for any carriage, if it is determined that AIe>AIe+1 and AIe>AIe−1 it is deemed that an air pollution degree of a carriage e is higher than that of an adjacent carriage, and then air filtering strength of a ventilation system of the carriage adjacent to the carriage e is improved to reduce cross pollution between different carriages and to accelerate flowing and discharging of air pollutants out of the train; and
if min(AIR)<AO<max(AIR), it is deemed that the air pollution degree of some carriages is higher than the outdoor air pollution degree while the air pollution degree of still some carriages is lower than the outdoor air pollution degree; and then the outdoor air circulating ventilation systems of the carriages with the air pollution degree higher than the outdoor air pollution degree are started; and meanwhile, the outdoor air circulating ventilation systems of the carriages with the air pollution degree lower than the outdoor air pollution degree are stopped, and the indoor air circulating filtering apparatuses of the carriages with the air pollution degree lower than the outdoor air pollution degree are started;
wherein, AO is a predicted result of outdoor AQI of the train, and AIR is a predicted result of indoor AQI of the R-th carriage of the train.