基于工业机器人的超声换能器回波自动测量系统设计

A Robot Based Automatic Pulse-Echo Measurement System Design For Ultrasonic Transducer

摘要:

针对医用超声换能器回波测量中存在的自动化水平低、测试人员主观判断对结果产生很大影响等问题，基于工业机器人设计了一套超声换能器回波自动测量系统。详细阐述了回波自动测量系统设计思路，对系统构建的关键——自动对位功能的实现方案进行了对比分析，在Matlab环境中开发了完整的参数设置、自动对位和回波采集与处理程序，对自动对位算法进行了详细描述。试验结果表明该系统达到了设计指标，灵敏度测量的偏移系数小于0.5%，能够满足日常工作中的测试需要。本工作为医用超声换能器研发、生产全流程的智能制造打下了良好的基础。

Abstract:

With regard to low level of automation in pulse-echo measurement of medical ultrasonic transducers and the influence of subjective judgment on the test results, an automatic pulse-echo measurement system of ultrasonic transducers has been designed based on an industrial robot. Design for the pulse-echo measurement system was explained in detail. The key to the construction of the measurement system - the realization of automatic alignment function is compared and analyzed. A complete setting of parameters, automatic alignment function, and an echo acquisition and processing program are developed in the Matlab environment. The automatic alignment algorithm is described in detail. The test results show that the system has reached the design target, the coefficient of variable of sensitivity measurement is less than 0.5%, and can meet the testing needs of daily work. The work in this paper has laid a good foundation for the intelligent manufacturing of the whole process of medical ultrasonic transducer R&D (Research & Design) and production.