The invention belongs to a technology of
radio frequency identification and particularly relates to a multi-
microcontroller radio frequency identification read-write device and a
data transmission method thereof. The multi-
microcontroller radio frequency identification read-write device comprises a radio frequency transceiving
unit group, a
microcontroller control unit group, a master micro controller
control unit, a stabilized
voltage power supply unit, a storage unit, a display unit, a reset unit, a
programming unit and an upper computer interface unit. The
data transmission method comprises the following steps: the micro controllers are initialized; radio frequency transceiving units send request transmission identifiers after receiving non-repetitive tag data, a passive mode of serial interface
data transmission is started if effective
chip selection exists; and the master micro controller unit is used for setting data transmission priority according to the request transmission identifiers, setting the
chip selection of units corresponding to the highest priority to be low, starting an
active mode of the serial interface data transmission, and setting corresponding
chip selection to be high and regulating the data transmission priority after the data are uploaded according to an uploading mode. According to the multi-microcontroller
radio frequency identification read-write device and the data transmission method, the reading efficiency of the read-write device is greatly improved, and the problem of a great amount of
data redundancy in read-write systems is solved.