Vehicle-mounted acoustic monitoring and diagnosing system

The utility model relates to a vehicle-mounted acoustic monitoring and diagnosing system, which belongs to the technical field of vehicle bearing monitoring and comprises a vehicle-mounted abnormal sound monitor, the vehicle-mounted abnormal sound monitor is connected with a sound acquisition device, the sound acquisition device is fixedly arranged in a carriage of a train and positioned above a running gear of the train, and the vehicle-mounted abnormal sound monitor is connected with a switch. The switch is connected with the cloud server and the terminal equipment through wireless signals, and the sound collection device is used for collecting sound information generated by a bearing of a train running gear. According to the utility model, sound information sent by the sound acquisition device is received through the vehicle-mounted abnormal sound monitor, abnormal sound is monitored, and a monitoring result is sent to the cloud server and the terminal equipment in real time through the switch, so that a u