摘要
Abstract
Ultrasonic level gauges are widely used in industrial level monitoring due to their non-contact measurement advantages,especially playing an important role in key scenarios such as tailings ponds,slurry pools,and drainage facilities in metal mines.However,its measurement accuracy is easily affected by factors such as environmental temperature,installation deviation,and medium characteristics,among which temperature changes have a particularly prominent impact on the error of non temperature compensated ultrasonic level gauges.This study combines the actual working conditions of a metal mine in Mongolia(with a temperature difference of 35℃between day and night and a windy and sandy environment),and takes a temperature compensated ultrasonic level gauge with a range of 4m as the object.Through theoretical modeling and field experiments,the error mechanism dominated by temperature is systematically quantified,and a multi-level compensation strategy is proposed.The experimental results show that under a typical temperature difference of 30℃in mines,the absolute error can reach 204mm(5.1%of the range).Based on the comparison of compensation effects,this paper demonstrates that the use of integrated temperature compensation or acoustic frame calibration for ultrasonic level gauges can significantly improve the accuracy and safety of mine level monitoring and reduce the risk of dam failure.关键词
超声波液位计/温度补偿/声速校正/误差分析/金属矿山Key words
ultrasonic level gauge/Temperature compensation/Sound velocity correction/Error analysis/metal mine分类
化学化工
