The invention discloses a 4G
wireless intelligent network bridge, for the purpose of satisfying the industrial demand for remote cluster control over an industrial
metering pump. The 4G
wireless intelligent network bridge comprises a micro controller, a
peripheral circuit, a CAN module and a 4G module, wherein the micro controller is connected with the
peripheral circuit, the CAN module and the 4G module. The designed 4G
wireless intelligent network bridge can realize conversion from CAN protocol data to wireless frame data, and at the same time, can realize conversion from the wireless frame data to the CAN protocol data. According to the invention, the problem of mutual conversion between data in two formats, i.e., the CAN protocol data and the wireless frame data is solved. For the purpose of solving the problems of poor real-time performance, incapability of guaranteeing
data security, not high pump group onsite efficiency and the like, a priority
algorithm is formulated, high, medium and low-priority data in
metering pump control is effectively processed, and the real-time performance can be improved. At the same time, an
encryption algorithm and a pump group coordinated
control algorithm are formulated based on DES.