Design of Underwater Ultrasonic Ranging Based on FPGA
Aiming at the problem of the difficulty of automatic obstacle avoidance of underwater robots in dirty waters,an underwater ultrasonic ranging system based on FPGA is designed and implemented,which is used for obstacle avoidance of underwater robots and distance detection of underwater targets.It adopts the ranging method of transit time and calculates the distance from ultrasonic waves to obstacles.CycloneIV E series FPGA of Intel Company is used as the control and data processing center to carry out tasks such as sound wave transmission,acoustic wave acquisition,data processing,data display and transmission.The experimental results show that the relative error of the ranging results is less than 4%,and the causes of error are analyzed to verify the feasibility of the system.
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维普
