Control method, device and system of ultrasonic transducer

Abstract

The invention provides a control method, device and system for an ultrasonic transducer. The control method for the ultrasonic transducer includes the following steps: when a triggering condition is satisfied, obtaining a first current wavelength of ultrasonic waves transmitted by a transmitting transducer of the ultrasonic transducer; obtaining a first current distance between a reflecting face and the ultrasonic transducer; obtaining a minimum value of an absolute value of a difference value between a doubled value of the first current distance and an integral-multiple value of the first current wavelength; judging whether the minimum value is larger than or equal to a threshold value; if so, determining an ideal transmitting frequency of the transmitting transducer according to the first current wavelength; according to the ideal transmitting frequency, adjusting the transmitting transducer so as to make the doubled value of the first current distance is an integral multiple of a second wavelength; and the second wavelength being the wavelength of ultrasonic waves transmitted by the adjusted transmitting transducer. The control method, device and system of the ultrasonic transducer are capable of improving the measurement accuracy.

Description

technical field [0001] The present invention relates to the field of ultrasonic sensing technology, in particular to a control method, device and system for an ultrasonic transducer. Background technique [0002] At present, with the development of ultrasonic technology, ultrasonic technology has been widely used in various fields, from industrial testing to medical testing, there is no such thing as ultrasonic technology. [0003] Some application fields require miniaturization of equipment and require ultrasonic short-distance continuous measurement. In some scenarios, the distance of only a few wavelengths is required, or even shorter, and the waveform excited by multiple pulses continuously transmitted by the ultrasonic wave will still have strong energy when it returns to the transmitting end after being reflected by a parallel reflective surface, so if it cannot The formation of resonance may affect the electro-acoustic conversion of the transmitting transducer, resul...

AI Technical Summary

Problems solved by technology

In some scenarios, the distance of only a few wavelengths is required, or even shorter, and the waveform excited by multiple pulses continuously transmitted by the ultrasonic wave will still have strong energy when it returns to the transmitting end after being reflected by a parallel reflective surface, so if it cannot Resonance is formed, which may affect the electro-acoustic conversion of the transmitting transducer, resulting in distortion of the transmitted waveform

[0004] At the same time, due to the transmission characteristics of ultrasonic waves, even if resonance can be achieved in a certain fixed environment, it will cause distortion due to changes in environmental conditions that affect ultrasonic transmission, resulting in inaccurate detection or even undetectable problems.

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