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公开(公告)号：US12092627B2
公开(公告)日：2024-09-17
申请号：US18508648
申请日：2023-11-14
申请人： Suzhou Renzheng Zhitan Technology Co., Ltd. , Nanjing University of Aeronautics and Astronautics
发明人： Zhenghua Qian , Mingming Wang , Peng Li , Xianwei Wu , Hairui Liu , Zhi Qian , Qi Li , Zelin Xu
CPC分类号： G01N33/2858 , G01N27/025
摘要： A signal processing system and method for inductive oil abrasive particle sensor, comprising a sensor, an excitation signal generator, an analog signal processing circuit, a MCU signal acquisition module and a computer signal processing module is disclosed. The sensor is provided with two groups of induction coils, the excitation signal generator generates excitation signals and drives the excitation coils of the sensor to output induction signals containing abrasive particle information, and the analog signal processing circuit receives the induction signals output by the sensor and demodulates and amplifies the induction signals. The signal processing system of the sensor applied to online monitoring of oil abrasive particles is simple in structure and convenient to apply, has a complete signal statistics and monitoring interface, and can be used to effectively monitor the size, concentration and other information of the metal abrasive particles in oil in real time.
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公开(公告)号：US11768180B1
公开(公告)日：2023-09-26
申请号：US18176439
申请日：2023-02-28
发明人： Zhenghua Qian , Zhi Qian , Peng Li , Xianwei Wu , Chen Yang , Yinghong Zhang
CPC分类号： G01N29/069 , G01N29/041 , G06T7/0004 , G01N2291/015 , G01N2291/0234 , G01N2291/106 , G06T7/40 , G06T2207/30108
摘要： The present disclosure relates to a method for ultrasonic guided wave quantitative imaging in a form of variable array and belongs to the technical field of ultrasonic non-destructive testing. The method includes: converting a non-linear lippmann-Schwinger equation into a form of linear summation by a method of moments; and selecting acquisition arrays with different numbers of probes to measure a scattered field signal, and modifying Green's functions by variable born approximation for continuous iterations to approximate a true solution, so as to obtain a final objective function Ok to be solved. According to the present disclosure, by adjusting the arrays, the number of probes and appropriate solution algorithm can be selected based on the testing accuracy; and the method can achieve quantitative evaluation of non-destructive testing, and can be widely used in practical guided wave testing applications of industrial non-destructive testing.
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