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In the process of data transmission, the data collector has some problems, such as low efficiency of data transmission and unguaranteed data security. In order to solve these problems, a data transmission control system of portable data collector is designed. The data transmission control system collects the data through the FPGA converter interface, removes the collected data and stores them in the DDR2 SDRAM, and then processes the data with the core FIFO chip. Ensure the efficiency of data transmission in the process of data transmission. The data transmission efficiency and packet loss rate of the system are tested. The experimental results show that the portable data collector The control accuracy of data attack is 98.92%.