Segmented focusing ultrasonic phased array ring array design method

An ultrasonic phased array and design method technology, applied in the field of ring arrays, can solve the problems of increasing the difficulty of manufacturing and the limitation of the number of array elements, and achieve the effect of reducing the difficulty of the manufacturing process

Active Publication Date: 2020-11-17
WUHAN ZHONGKE INNOVATION TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as the array element number increases, the width of the array element ring decreases rapidly. When the array element number is large, the width becomes very small, which increases the difficulty of manufacturing, so the number of array elements will be limited, so a The design method of ultrasonic phased array ring array with segmental focus improves the above problems

Method used

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  • Segmented focusing ultrasonic phased array ring array design method
  • Segmented focusing ultrasonic phased array ring array design method
  • Segmented focusing ultrasonic phased array ring array design method

Examples

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Embodiment

[0037] Embodiment: An example of a 20-element ring array probe. The model of the probe is: HS5R20F5m2k4. The specific specifications of the probe are as follows: center frequency 5MHz; ring array with 20 array elements; closest focusing distance 5mm. Using the focal length expansion factor with the proportional number m as 2, and the minimum focusing factor k as 4, it can be calculated according to this design method: the farthest focusing distance can reach 80mm; the maximum outer diameter of the array element is 39mm, and the array diagram is as follows figure 1 ; Probe dimensions such as figure 2 The outer diameter of each array element is shown in Table 1. The array element is cut according to the outer diameter size, and the slot width is between 0.015mm and 0.1mm, which is determined by the cutting process. The smaller the better, the application focus range of the ring array probe is expressed as an integer The geometric series is divided into several segments. Accordi...

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Abstract

The invention relates to the technical field of ring arrays, in particular to a segmented focusing ultrasonic phased array ring array design method, which comprises a ring array probe, an electronic phased array can be focused in a larger focusing range through the phased array probe, a focal length range is divided into a plurality of focal length segments, and when the phased array probe is focused in a closer focal length segment, a plurality of array element rings on the inner layer are used for focusing, the focusing quality is guaranteed through the design of focusing coefficients, whenfocusing is conducted in a far focal length section, array elements on the outer layer of each section are added step by step for common focusing, the long-distance focusing performance is guaranteed,the area of the array elements is increased section by section through a sectional focusing method, and the focusing efficiency is improved. The outer ring width of the large-aperture probe with thelarge focal length is large, the manufacturing process difficulty is reduced, and the consistency of the focusing capacity at different far and near focal lengths is guaranteed through the design of the focusing coefficient k.

Description

technical field [0001] The invention relates to the technical field of ring arrays, in particular to a method for designing a segmented focusing ultrasonic phased array ring array. Background technique [0002] The ring array technology uses concentric ring array probes to realize the transmission and reception of transversely focused sound beams. Each ring is an independent array element, and the circumferentially symmetrical transverse focusing is achieved through phased array technology. The focused sound beam is in the horizontal two-dimensional coordinate They all have a small size, and the focal point is distributed on the central axis of the probe. Phased array ultrasonic technology adopts independent control of the phase delay of each array element and superposition of sound fields or signals of multiple array elements to realize the synthesis of focused sound beams. The design is to make the area of ​​each array element roughly equal, and the outer diameter of each ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/521G01N29/24G06F17/10
CPCG01S7/521G01N29/24G06F17/10G01N2291/106
Inventor 王子成韩志雄桂琳琳金耀辉闵力杨文
Owner WUHAN ZHONGKE INNOVATION TECH
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