source：Industry News Popular：rfid fpc tag release time：2021-11-09 13:45:36 Article author：sznbone
RFID base station module circuit
The base station module is mainly composed of radio frequency receiving circuit, low frequency transceiver circuit, main control chip MCU, LIN interface and man-machine interface. The radio frequency receiving circuit adopts the UHF radio frequency receiving chip MC33596 of FREESCALE Company, after completing signal demodulation and data Manchester decoding, the data is transmitted to the base station main control chip MC9S08DZ60 for data processing (RKE data decryption) and command execution.
low frequency transceiver adopts PJF7992 produced by NXP Company. PJF7992 integrates all necessary functions to facilitate reading and writing of transponders. The base station microprocessor controls the communication between PJF7992 and transponder through the LIN serial interface of PJF7992.
The base station main control chip adopts MC9S08DZ60 produced by F RE E SC AL E, which can configure and communicate the parameters of the radio frequency receiving chip MC33596 through the SPI serial bus. MC9S08DZ60 integrates two SCI (LIN) modules, which can control the low-frequency transceiver chip PJF7992 through a LIN bus, and the other LIN bus can transmit commands to the engine electronic control unit (ECU) and gate control related actuators. Adding the LIN bus interface to the automobile security and anti-theft system enables the system to share data and control information with other electronic control systems inside the automobile, which greatly improves the security and flexibility of the system.
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