Fault detection method and device for fresh air temperature sensor

The invention provides a fresh air temperature sensor fault detection method and device which are applied to a railway vehicle, the railway vehicle comprises a plurality of fresh air temperature sensors, and the method comprises the steps that the working mode of the railway vehicle is determined; the measurement value of a target sensor and the measurement average value of the multiple fresh air temperature sensors are obtained, and the target sensor is any one of the multiple fresh air temperature sensors; and determining whether the target sensor fails or not according to the working mode, the measured value and the measured average value. The problem that the fault detection accuracy of the fresh air temperature sensor is low due to different working modes of the vehicle is solved, and the accurate fault detection method for the fresh air temperature sensor is achieved. 本申请提供一种新风温度传感器故障检测方法、装置，应用于轨道车辆，该轨道车辆包括多个新风温度传感器，该方法包括：确定所述轨道车辆的工作模式；获取目标传感器的测量值以及所述多个新风温度传感器的测量平均值，其中，所述目标传感器是所述多个新风温度传感器中的任何一个；根据所述工作模式