Flexible ultrasonic transducer for multi-mode measurement

Abstract

A flexible ultrasonic transducer for multi-mode measurement belongs to the technical field of ultrasonic detection. The flexible ultrasonic transducer consists of an upper substrate, upper electrodes, an upper piezoelectric layer, a bonding layer, lower electrodes, a lower piezoelectric layer and a lower substrate, adopts a symmetrical structure, and is formed by stacking and fixedly connecting the upper substrate, the upper electrodes, the upper piezoelectric layer, the bonding layer, the lower electrodes, the lower piezoelectric layer and the lower substrate from top to bottom, wherein piezoelectric units in each piezoelectric layer are independently present; and each piezoelectric unit is controlled by different electrodes, and can achieve independent addressing and independent control; The flexible ultrasonic transducer can implement blood flow measurement and three-dimensional imaging of a human body; by adopting the flexible electrodes and the flexible substrates, the flexible ultrasonic transducer can be applied to ultrasonic detection of an uneven surface of the human body, and a coupling agent does not need to be applied, so that not only can the use range of ultrasonic detection be widened, but also a subject has better experience feeling; and due to a double-piezoelectric-layer structure, the intensity of generated ultrasonic waves is obviously improved in comparison with that of a transducer with piezoelectric layers of the same thickness, an precision of the ultrasonic detection is improved.

Description

Technical field [0001] The present invention belongs to the multi-physical field measurement ultrasound detection technology, and more particularly to a multi-mode measurement flexible ultrasonic transducer. Background technique [0002] Ultrasound is widely used in the medical field due to unique non-invasive and high precision and superior performance in real time, especially in ultrasound imaging and Doppler blood flow detection. The basis of modern medical diagnosis is usually a result of multiple physical quantities, and existing ultrasound probes can measure very little physical quantities, therefore require a transducer that can simultaneously measuring multi-physical quantities. At the same time, the energy loss of existing ultrasound transducers is also a problem. The core of three-dimensional ultrasound imaging technology is a matrix probe. The design of the corner can achieve different working modes. The three-dimensional ultrasound imaging matrix probe using a full wi...

AI Technical Summary

Problems solved by technology

[0003] Most of the current transducers are rigid, which is not good for human body fit, and needs to be coated with couplant, which affects the user experience of the testee, and the use on uneven surfaces of the human body is limited.

For a one-dimensional or two-dimensional transducer array, it can only correspond to a specific detection mode, not only the accuracy is not high enough, but also the probe needs to be replaced frequently, thus wasting resources

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