Temperature control method for passenger room of air conditioning system of tramcar

The invention discloses a temperature control method for a passenger room of an air conditioning system of a tramcar, which adopts a train control and management system (TCMS) to control an air conditioner HVAC, and is provided with three control modes, including an automatic mode, a ventilation mode and a manual mode. The train control and management system TCMS is connected with a human-computerinteraction module HMI, and an operation interface of an air conditioner HVAC is arranged on the human-computer interaction module HMI and used for inputting a corresponding instruction for controlling the air conditioner HVAC. The train control and management system TCMS selects a control method for executing an automatic mode, a ventilation mode or a manual mode according to the detected environment temperature, the detected indoor temperature and input corresponding instructions so as to correspondingly control the air conditioner HVAC. The air conditioner is controlled through the three control modes, and the rid