Volume control method and system for pure electric bus

The invention belongs to the technical field of vehicle alarm, and provides a pure electric bus volume control method and system, and the method comprises the steps: determining a reference basis for volume control according to a vehicle gear, and taking the vehicle movement speed as the reference basis for volume adjustment when the gear is in a forward gear; and when the gear is in the reverse gear, an obstacle identified by the camera is used as a reference basis for volume adjustment. The method has the advantages that obstacles existing around the bus are detected through visual equipment such as a camera or according to the running speed of the bus, the output volume of the voice is automatically adjusted according to the noise volume of the surrounding environment, and the safety of a bus driver and surrounding pedestrians and vehicles is improved while the alarm voice output requirement is met. 本发明属于车辆报警技术领域，提供了一种纯电动公交车音量控制方法及系统，包括根据车辆档位确定其音量控制的参考依据，在档位位于前进档时，以车辆运动速度作为音量调节的参考依据；在档位位于后退档时，以摄像头识别的障碍物作为音