Device suitable for adjusting temperature change of PLC (Programmable Logic Controller) under working condition of air conditioner of urban railway vehicle

The utility model relates to a device suitable for adjusting temperature change of a PLC (Programmable Logic Controller) under the working condition of an air conditioner of an urban railway vehicle. The device comprises a resistance adjusting module, a current adjusting module and a power supply module, the device is connected with a temperature sensor in parallel, the temperature sensor is connected with a programmable logic controller, and the programmable logic controller controls an air conditioner of the urban railway vehicle to work according to the temperature detected by the temperature sensor. The power supply module supplies power to the resistance adjusting module and/or the current adjusting module. The resistance adjusting module adjusts the resistance value of the temperature sensor; the current adjusting module adjusts the current flowing through the temperature sensor. By using the device suitable for adjusting the PLC temperature change in the urban railway vehicle air conditioner working co