Phi-OTDR-based traffic flow real-time monitoring system and method

The invention discloses a phi-OTDR-based traffic flow real-time monitoring system and method. The system comprises a sensing optical cable, a phi-OTDR-based optical fiber vibration monitoring host, aswitch and a monitoring terminal, wherein the sensing optical cable is laid on the two sides of a road of a monitored road section in parallel and used for monitoring vibration signals caused in the running process of vehicles on the road in real time; the optical fiber vibration monitoring host is connected with the sensing optical cable and is used for acquiring the vibration signals monitored by the sensing optical cable and analyzing and processing the vibration signals to obtain optical signal intensity; the switch is connected with the optical fiber vibration monitoring host through a network cable and transmits the optical signal intensity to the monitoring terminal in a network communication mode; and the monitoring terminal is used for displaying in the form of a vibration signalwaterfall plot according t