Design of multi-channel synchronization signal acquisition method based on FPGA

In the field of aerospace, engines play a vital role, and rolling bearings, as the core components within them, have a significant impact on the production and operation of the entire equipment system. Therefore, real-time monitoring of the engine to ensure the safe operation of the equipment is indispensable. Therefore, this paper designs and implements a multi-channel synchronous acquisition card system based on FPGA platform to realize real-time acquisition of engine vibration signals, and then analyzes its running state and makes accurate judgments. Aiming at the problems of slow information interaction speed and high bit error rate between FPGA and host computer, we design a message interaction optimization method based on UART, which successfully improved the speed and accuracy of data transmission. At the same time, in order to solve the problem of complex and difficult management of system parameters, we design a RAM based addressing storage method, which can effectively realize the long-term storage of parameters and ensure the stability of data. And the method adopts modularization and parametric design strategy, so it has high portability. The simulation results show that the signal-to-noise ratio of the method can reach 95dB and the power consumption is only 0.26W, which meets the requirements of vibration signal acquisition and power consumption. These characteristics make the system have high engineering application value in the field of aerospace engine monitoring.