基于时域积累平均和小波多分辨率的井下测距系统设计

根据超声波测距的原理,利用回波时间差来测量待测距离,并设计了超声波测距系统的软硬件。在此基础上,提出了对传感器采集到的微弱信号进行时域累加平均和小波变换中的多分辨率分析方法相结合去噪。实践证明,系统极具实用价值。

Design of Underground Ranging System Based on Accumulated Average in Time-domain and Wavelet Multi-resolution

According to the principle of ultrasornic ranging,and the time difference of the echo is used to measure the DUT distance,the system completes the hardware and software system design of distancemeasurement of ultrasonic.The method that combine the cumulative average and multi-resolution analysis in wavelet transform was presented which can de-noise the weak signal collected from the sensor.The practice has proved that this system had great practical value.