Design of a Multichannel Pulser/Receiver and Optimized Damping Resistor for High-Frequency Transducer Applied to SAM System
Scanning acoustic microcopy (SAM) is widely used in biomedical and industrial applications in dermatology, ophthalmology, intravascular imaging, and small animal images, owing to SAM’s ability to photograph small structures with a good spatial resolution. One of the most important devices of this sy...
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doaj-b6d56d31c238413db7f85d6691606dd42020-11-27T08:03:41ZengMDPI AGApplied Sciences2076-34172020-11-01108388838810.3390/app10238388Design of a Multichannel Pulser/Receiver and Optimized Damping Resistor for High-Frequency Transducer Applied to SAM SystemNgoc Thang Bui0Thi My Tien Nguyen1Tran Thanh Nam Dinh2Quoc Cuong Bui3Tan Hung Vo4Duc Tri Phan5Sumin Park6Jaeyeop Choi7Yeon-Hee Kang8Byung-Gak Kim9Junghwan Oh10Industry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, KoreaDepartment D of Pediatrics at the Hospital for Tropical Diseases, 764 Vo Van Kiet Street, Ward 1, District 5, Ho Chi Minh City 700000, VietnamIndustry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, KoreaIndustry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, KoreaIndustry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, KoreaIndustry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, KoreaIndustry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, KoreaIndustry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, Korea(BK21 Plus) Marine-Integrated Biomedical Technology Program, Pukyong National University, Busan 48513, KoreaCollege of Future Convergence, Pukyong National University, Busan 48513, KoreaIndustry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan 48513, KoreaScanning acoustic microcopy (SAM) is widely used in biomedical and industrial applications in dermatology, ophthalmology, intravascular imaging, and small animal images, owing to SAM’s ability to photograph small structures with a good spatial resolution. One of the most important devices of this system is the pulser/receiver (P/R) (PRN-300, Ohlabs Corporation, Nam-gu Busan, Republic of Korea), which generates pulses to trigger a high-frequency transducer. This article presents the design of a pulse generator to excite high-frequency transducers with four channels. The characteristics of the pulses, such as time and frequency, can be reconfigured by using a high-speed field programmable gate array (FPGA). The configuration software was developed for communicating with the P/R device via a USB connector for easy, feasible pulse selection and real-time pulse management. Besides that, during the design and implementation of the hardware, we optimized the damping resistor value to reduce the overshoot and undershoot part of the signal, ensuring the best effect on the transducer signal. The test results show that unipolar pulses worked with transducers with frequencies over 100 MHz. The SAM systems can work simultaneously with multiple transducers, and the resulting images have different resolutions of regions.https://www.mdpi.com/2076-3417/10/23/8388scanning acoustic microscopy (SAM)high-frequency transducerpulse generatorhigh-speed PCB design |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ngoc Thang Bui Thi My Tien Nguyen Tran Thanh Nam Dinh Quoc Cuong Bui Tan Hung Vo Duc Tri Phan Sumin Park Jaeyeop Choi Yeon-Hee Kang Byung-Gak Kim Junghwan Oh |
spellingShingle |
Ngoc Thang Bui Thi My Tien Nguyen Tran Thanh Nam Dinh Quoc Cuong Bui Tan Hung Vo Duc Tri Phan Sumin Park Jaeyeop Choi Yeon-Hee Kang Byung-Gak Kim Junghwan Oh Design of a Multichannel Pulser/Receiver and Optimized Damping Resistor for High-Frequency Transducer Applied to SAM System Applied Sciences scanning acoustic microscopy (SAM) high-frequency transducer pulse generator high-speed PCB design |
author_facet |
Ngoc Thang Bui Thi My Tien Nguyen Tran Thanh Nam Dinh Quoc Cuong Bui Tan Hung Vo Duc Tri Phan Sumin Park Jaeyeop Choi Yeon-Hee Kang Byung-Gak Kim Junghwan Oh |
author_sort |
Ngoc Thang Bui |
title |
Design of a Multichannel Pulser/Receiver and Optimized Damping Resistor for High-Frequency Transducer Applied to SAM System |
title_short |
Design of a Multichannel Pulser/Receiver and Optimized Damping Resistor for High-Frequency Transducer Applied to SAM System |
title_full |
Design of a Multichannel Pulser/Receiver and Optimized Damping Resistor for High-Frequency Transducer Applied to SAM System |
title_fullStr |
Design of a Multichannel Pulser/Receiver and Optimized Damping Resistor for High-Frequency Transducer Applied to SAM System |
title_full_unstemmed |
Design of a Multichannel Pulser/Receiver and Optimized Damping Resistor for High-Frequency Transducer Applied to SAM System |
title_sort |
design of a multichannel pulser/receiver and optimized damping resistor for high-frequency transducer applied to sam system |
publisher |
MDPI AG |
series |
Applied Sciences |
issn |
2076-3417 |
publishDate |
2020-11-01 |
description |
Scanning acoustic microcopy (SAM) is widely used in biomedical and industrial applications in dermatology, ophthalmology, intravascular imaging, and small animal images, owing to SAM’s ability to photograph small structures with a good spatial resolution. One of the most important devices of this system is the pulser/receiver (P/R) (PRN-300, Ohlabs Corporation, Nam-gu Busan, Republic of Korea), which generates pulses to trigger a high-frequency transducer. This article presents the design of a pulse generator to excite high-frequency transducers with four channels. The characteristics of the pulses, such as time and frequency, can be reconfigured by using a high-speed field programmable gate array (FPGA). The configuration software was developed for communicating with the P/R device via a USB connector for easy, feasible pulse selection and real-time pulse management. Besides that, during the design and implementation of the hardware, we optimized the damping resistor value to reduce the overshoot and undershoot part of the signal, ensuring the best effect on the transducer signal. The test results show that unipolar pulses worked with transducers with frequencies over 100 MHz. The SAM systems can work simultaneously with multiple transducers, and the resulting images have different resolutions of regions. |
topic |
scanning acoustic microscopy (SAM) high-frequency transducer pulse generator high-speed PCB design |
url |
https://www.mdpi.com/2076-3417/10/23/8388 |
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