System and method for acquiring bus passenger flow information

The invention provides a system and a method for acquiring bus passenger flow information. According to the system, a double-core FRID (Radio Frequency Identification) bus card and a vehicle-mounted information acquisition subsystem are constructed on the basis of the RFID technology; the double-core FRID bus card is used as a public transit bus card of a passenger; when being fixedly arranged and borne on a bus, the vehicle-mounted information acquisition subsystem can automatically acquire the number of the passengers and passenger OD (Origin & Destination) information on the bus in real time; the difficulty in acquiring the information about the number of the passengers and the passenger OD information on the bus is overcome; once the system is constructed, the acquisition of the bus passenger flow information can be automatically operated and completed, so that the human resources for acquiring the bus passenger flow information are greatly saved and in the information acquisition process, the manual interference is low and the accuracy is high, and thus, powerful technical support can be provided for development of an urban public transportation system.