Novel CAN optical fiber communication circuit

The invention relates to a novel CAN optical fiber communication circuit, which comprises a CAN transceiver circuit, an isolation power supply, a CPU control circuit and an optical fiber transceiver circuit, and is characterized in that the CAN transceiver circuit is used for converting a received CAN signal into a TTL level signal for outputting and receiving a CAN signal sent back by the optical fiber transceiver circuit; the CPU control circuit is used for receiving a TTL level signal and transmitting the TTL level signal to the optical fiber transceiver circuit; and the optical fiber transceiver circuit is used for converting the TTL level signal into an optical signal and outputting the optical signal to a receiving end and the CAN transceiver circuit. The control system has the advantages that the single-chip microcomputer and the hardware circuit participate in adjustment of CAN communication signals to achieve data transmission, CAN signals and optical fiber signals can be mutually converted through t