Abstract
Introduction. The article is devoted to the actual problem of creating piezoelectric sensors in order to improve their characteristics, which contribute to increasing the resolution of the system. It is noted that the quality of the received information signal of the ultrasound diagnostic system depends on the characteristics of the primary sensing elements of the sensors.Modelling of a sensitive element and studying its characteristics. Choosing and substantiating the material and geometric shape of piezoelectric crystals affects the radiation range, the shape of the radiation signal, resolution, etc., which generally affects the accuracy of the information signal. That is why the choice and justification of the parameters of the sensing element and the method of constructing the sensor is a very important parameter for the ultrasound diagnostic system.A model of a primary sensing element is proposed, which, as a result of using a geometric shape, provides an extension of the frequency range of the converter. Thus, such a model increases the reliability of the information signal, which displays the parameters of the inhomogeneous medium of the object of investigation. This gives new possibilities when using such radiators for different types of diagnostic signals.If we analyze the numerical values of the absolute and relative bandwidths that we define for the standard and modified sensitive elements, we obtain the following: the bandwidth of the modified sensing element expands in comparison with the bandwidth of the plane disk sensitive element. This provides new opportunities for the application of similar emitters for different types of diagnostic signals. At the same time, the obtained characteristics should be selected, taking into account the dependencies between the quality factor and the frequency range of a particular sensor.Conclusion. Proposed model of the modified converter is suitable for use in the practice of ultrasound diagnostics of various objects.In further research it is necessary to analyze the character of the distribution of acoustic pressure in the radiation field, taking into account the zonal form of the proposed modified radiator
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Bulletin of Kyiv Polytechnic Institute. Series Instrument Making
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
