An Ultrasonic Distance Measurement System Based On FPGA

With the rapid development of Technology,ultrasonic is widely used in the various walks of life.Such as traffic obstacle avoidance,safety early warning,auto-navigation and field robot. Because it has the advantages of safety,convenience and realtime control, which makes it become a main measuring technology.However,ultrasonic distance measurement system has some deficiencies.In market,microcontroller is used the core of system Although the consumption is reduced,there has a large limit in the accuracy and efficiency.The FPGA has the advantages of fast performance,rich logic resources and strong reconfiguration.This is a new idea to realize the high performance system. This paper makes investigation and research on the ultrasonic distance measurement system.we design and complete a high performance system. The system can effectively solve the shortcomings of reliability,convenience,real-time and accuracy in ultrasonic system The system can meet the demand of traffic obstacle avoidance, auto-navigation.The system has the advantages of fast performance,strong anti-jamming ability and high accuracy.In this paper, we use top to down method, divides the system timing generator module, waveform generator module, high precision counter module, dual-core FFT calculation module and echo signal detection module.