Ultrasonic flowmeter capable of detecting abnormal state of reflector plate and detection method

Abstract

The invention discloses an ultrasonic flowmeter capable of detecting the abnormal state of a reflector plate and a detection method. The method comprises the steps of calculating the abnormal index of the ultrasonic ireflector plate according to the angle change value of the ultrasonic reflector plate and / or the surface roughness of the ultrasonic reflector plate and / or the displacement data and / or shaking data of the ultrasonic reflector plate; calculating the abnormal tolerance of the ultrasonic reflector plate according to the sound wave receiving range and the metering precision of the ultrasonic transducer; and when the abnormality index of the ultrasonic reflector plate is greater than the abnormality tolerance, determining that the state of the ultrasonic reflector plate is abnormal. According to the invention, the problem of how to comprehensively and effectively detect the abnormal state of the ultrasonic reflector plate by the ultrasonic flowmeter is solved.

Description

technical field [0001] The invention belongs to the technical field of intelligent ultrasonic flow meters, and in particular relates to an ultrasonic flow meter and a detection method capable of detecting the abnormal state of a reflective sheet. Background technique [0002] Due to its own structure and measurement characteristics of the ultrasonic water meter, if the position and angle of the ultrasonic reflector change greatly, the direction of ultrasonic propagation will deviate, the strength of ultrasonic reception will be weakened, and the measurement accuracy will decrease. However, since the reflector is fixed in the ultrasonic water meter, it is difficult to check whether the position and angle of the reflector have changed. At present, technologies related to the measurement of ultrasonic reflectors, such as the Chinese patent "A Simple Ultrasonic Water Meter Reflector Micro-angle Change Measuring Device" with the publication number CN107255438A, propose a connecti...

AI Technical Summary

Problems solved by technology

[0003] The above technical solutions will greatly change the structure of the ultrasonic water meter, the manufacturing difficulty and cost of the water meter will increase, and the detection of the ultrasonic reflective sheet is relatively simple, and the state of the ultrasonic reflective sheet cannot be fully and effectively detected

At present, there is no comprehensive and effective technical solution for detecting the abnormal state of the ultrasonic reflector. Therefore, an ultrasonic flowmeter and a detection method that can detect the abnormal state of the reflective sheet are proposed.

Images