公开(公告)号：WO1997011364A1

公开(公告)日：1997-03-27

申请号：PCT/US1996014820

申请日：1996-09-17

Applicant: COMBUSTION ENGINEERING, INC.

Inventor： COMBUSTION ENGINEERING, INC. ,  DICKERMAN, Robert, L. ,  CAMERLIN, Marc, A. ,  KLEIN, Stanley, L. ,  ST. MARTIN, Michel ,  LEONARD, David, S.

IPC: G01N29/10

CPC classification number: G01N29/40 ,  G01N2291/011 ,  G01N2291/044 ,  G01S7/52026

Abstract: An ultrasonic testing system can receive data from at least two ultrasonic transducers and process the data in parallel to each other. The testing system can compress the data by a fixed ratio by storing the value of the sample having the highest amplitude out of a group of samples. The testing system can also provide threshold-based run-length encoding by compressing data by only storing samples which exceed a user-defined threshold value as well as a user-defined range of samples surrounding said samples. The ultrasonic testing system also provides a hardware gate for storing a peak amplitude and associated time-of-flight for a user-defined interval and a gate for storing the time-of-flight for the first excursion of the data through a user-defined threshold and interval. The operation of these gates or the storage of waveform data may be delayed by a constant delay or until the data exceeds a user-selectable threshold during a user-selectable time interval. The system also provides a multi-channel design allowing simultaneous waveform and/or hardware gate acquisition of data on more than one channel and permitting the parallel processing of data.

Abstract translation: 超声波测试系统可以从至少两个超声换能器接收数据并且彼此并行处理数据。 测试系统可以通过将一组样本中具有最高幅度的样本的值存储而以固定比率来压缩数据。 测试系统还可以通过仅存储超过用户定义的阈值的样本以及围绕所述样本的用户定义的样本范围来压缩数据来提供基于阈值的游程长度编码。 超声波测试系统还提供用于存储用户定义的间隔的峰值幅度和相关时间飞行的硬件门，以及用于通过用户定义的存储用于数据的第一偏移的飞行时间的门 阈值和间隔。 这些门的操作或波形数据的存储可以被延迟恒定的延迟，或者直到在用户可选择的时间间隔期间数据超过用户可选择的阈值。 该系统还提供多通道设计，允许在多个通道上同时进行数据波形和/或硬件门捕获，并允许并行处理数据。