Ultrasonic transducer

Abstract

The invention belongs to the field of ultrasonic imaging equipment, and discloses an ultrasonic transducer. The ultrasonic transducer comprises a base, a lower piezoelectric ceramic piece, a cushion block, a stainless steel elastic sheet support, a cantilever, a probe and upper piezoelectric ceramic pieces. A groove is formed in the upper surface of the base, and the lower piezoelectric ceramic piece is installed in the groove of the base and is connected with the cushion block; the stainless steel elastic sheet support is connected with the base through the cushion block, the stainless steel elastic sheet support and the cushion block cooperate to clamp one end of the cantilever, and the probe is fixedly installed at the other end of the cantilever; the two upper piezoelectric ceramic pieces are installed on the upper surface of the end, close to the cushion block, of the stainless steel elastic sheet support, and each upper piezoelectric ceramic piece is installed on the stainless steel elastic sheet support through a turnup electrode. The ultrasonic transducer and the cantilever are integrated in a split mode, the probe can be replaced conveniently, and high-frequency composite ultrasonic waves can be generated.

Description

technical field [0001] The invention belongs to the field of ultrasonic imaging equipment, and more specifically relates to an ultrasonic transducer. Background technique [0002] Ultrasonic transducers are devices that convert acoustic and electrical signals. Atomic force microscopy images through the interactions between atoms, but it can only image the surface and cannot probe the interior. Ultrasonic imaging can image the interior of the sample, but it also has problems. In previous experiments, due to the very small size of the probe cantilever, it is very difficult to realize the combination of the probe and the cantilever. Realized, but considering that the probe is a consumable item in the actual experiment and needs to be replaced frequently, so this method of plating the piezoelectric material directly on the tiny cantilever, or plating the piezoelectric material on the tiny base of the fixed cantilever The cost is extremely high; if the piezoelectric material is...

AI Technical Summary

Problems solved by technology

Atomic force microscopy is imaging through the interaction between atoms, but it can only image the surface and cannot detect the interior

Ultrasonic imaging can image the interior of the sample, but it also has problems. In previous experiments, due to the very small size of the probe cantilever, it is very difficult to realize the combination of the probe and the cantilever. Realized, but considering that the probe is a consumable item in the actual experiment and needs to be replaced frequently, so this method of plating the piezoelectric material directly on the tiny cantilever, or plating the piezoelectric material on the tiny base of the fixed cantilever Extremely costly; if the piezoelectric material is plated on the tiny base that holds the probe and then fixed to the external fixture, it will affect the vibration, which will further affect the generation of ultrasound, and finally affect the loading of the signal

[0003] In addition, an external circuit is required to drive the piezoelectric material. After the piezoelectric material is directly plated on it, the lead electrode needs to be connected to the external drive circuit. The tiny structure of the probe has a great impact on the work of the lead electrode later, making it very difficult.

[0004] In addition, in the existing technology, a piezoelectric material is usually added under the cantilever, and the tiny piezoelectric sheet on the cantilever is electrically driven to vibrate to generate ultrasound, which has a low frequency

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