Pembangkitan Pulsa Orde Nanodetik Berbasis Mikrokontroler Untuk Eksitasi Transduser Ultrasonik

FAATIH RIFQI MUQAFFI, BAMBANG MUKTI WIBAWA, DARMAWAN HIDAYAT

Sari


ABSTRAK

Makalah ini melaporkan suatu teknik pembangkitan pulsa lebar orde nanodetik (ns) repetitif yang terprogram berbasis mikrokontroler untuk keperluan eksitasi transduser ultrasonik. Pembangkitan pulsa dan pengaturan jarak antar pulsa dilakukan melalui operasi timer mikrokontroler. Sebuah monostable multivibrator mengubah lebar pulsa dari mikrokontroler dalam orde nanodetik melalui pengaturan komponen pewaktuan resistor-kapasitor (RC) dengan cara pengaturan nilai R yang dibuat dari sebuah potensiometer digital. Hasil pengujian menunjukkan bahwa mikrokontroler membangkitkan pulsa repetitif dengan interval terprogram dalam orde 1 detik dan lebar pulsa minimum 1,25 ms. monostable multivibrator dapat mengubah lebar pulsa tersebut menjadi sekitar 140 ns. Berdasarkan hasil pengujian, dapat disimpulkan bahwa sistem berfungsi sesuai rancangan, sistem dapat membangkitkan pulsa repetitif dengan lebar pulsa hingga 140 ns dengan parameter interval dan lebar yang dapat diprogram.

Kata kunci: generator pulsa, lebar pulsa singkat, mikrokontroler, monostable multivibrator, eksitasi transduser ultrasonik

 

ABSTRACT

This paper reports a repetitive, programmable, microcontroller-based pulse width generation technique for the purpose of ultrasonic transducer excitation. Pulse generation and distance adjustment between pulses is done through the microcontroller timer. A monostable multivibrator changes the pulse width of the microcontroller in the order of nanoseconds by adjusting the resistor-capacitor time constant which are done by adjusting the R value made from a digital potentiometer. The test results show that the microcontroller generates repetitive pulses with programmed intervals in order of 1 second and pulse width of 1.25 ms. A monostable multivibrator converts the pulse width to ca. 140 ns. Based on the test results, it can be concluded that the system functions according to the design as the system can generate repetitive pulses with pulse widths up to 140 nanoseconds with programmable interval and width parameters.

Keywords: pulse generator, short-width pulse, microcontroller, monostable multivibrator, ultrasonic transducer excitation


Kata Kunci


generator pulsa; lebar pulsa singkat; mikrokontroler; monostable multivibrator; eksitasi transduser ultrasonik.

Teks Lengkap:

PDF

Referensi


Aydn, E. A., & Güler, I. (2010). Design of PIC-Controlled pulsed ultrasonic transmitter for measuring gingiva thickness. Instrumentation Science and Technology, 38(6), 411–420. https://doi.org/10.1080/10739149.2010.509149

Chaney, A., & Sundararajan, R. (2004). Simple MOSFET-based high-voltage nanosecond pulse circuit. IEEE Transactions on Plasma Science, 32(5), 1919–1924. https://doi.org/10.1109/TPS.2004.835966

Ega, M., Suhendi Syafei, N., Mukti Wibawa, B., & Hidayat, D. (2016). Proseding Seminar Nasional Fisika dan Aplikasinya Sabtu .

Hidayat, D., Syafei, N. S., Wibawa, B. M., & Tumbelaka, B. Y. (2018). Fourier transform of high frequency ultrasonic waves propagated with a transmission mode. Journal of Physics: Conference Series, 1080(1). https://doi.org/10.1088/1742-6596/1080/1/012034

Hidayat, Darmawan, Ismail, T., Syafei, N. S., & Wibawa, B. M. (2018). Generator Pulsa Spike Terprogram untuk Pemicu Transduser Ultrasonik. JTERA (Jurnal Teknologi Rekayasa), 3(2), 295-302. https://doi.org/10.31544/jtera.v3.i2.2018.295-302

Hidayat, Darmawan, Setianto, S., Syafei, N. S., & Wibawa, B. M. (2018). MOSFET-based high voltage short pulse generator for ultrasonic transducer excitation. AIP Conference Proceedings, 1927. https://doi.org/10.1063/1.5021211

Hidayat, Darmawan, Syafei, N. S., Wibawa, B. M., & Tumbelaka, B. Y. (2018). Fabrikasi Transformator Step-up 1-kV Fasa Tunggal untuk Generator Pemicu Transduser Ultrasonik. Jurnal Teknologi Rekayasa, 3(1), 11 - 16. https://doi.org/10.31544/jtera.v3.i1.2018.11-16

Hsia, C., Hsiao, Y. C., & Huang, Y. C. (2019). A single-chip high-voltage integrated actuator for biomedical ultrasound scanners. Sensors (Switzerland), 19(23). https://doi.org/10.3390/s19235063

Ingale, K. V, & Kale, Y. B. (2017). ULTRASONIC HIGH VOLTAGE PULSER. In International Journal of Industrial Electronics and Electrical Engineering.

Jaffar, D. S. abdul, K, M., & Y.B, G. (2016). Design of High Voltage Pulse Generator and Receiver Circuit for Ultrasonic velocity and Absorption Measurements In liquids. Ijireeice, 4(1), 88–90. https://doi.org/10.17148/ijireeice.2016.4121.

Svilainis, L., Chaziachmetovas, A., & Dumbrava, V. (2015). Half bridge topology 500 v pulser for ultrasonic transducer excitation. Ultrasonics, 59, 79–85. https://doi.org/10.1016/j.ultras.2015.01.014

Vyaghra, R. V, Sharma, S. J., & Rajagopalan, S. (2016). Design of Microcontroller Based Multi-Frequency Ultrasonic Pulser Receiver. In Journal of Engineering Research andApplications, 6.

Wu, J.-X., Chen, P.-J., Wang, C.-L., Chen, G.-C., & Chen, T. (n.d.). Development of a Bipolar Pulse Generator for High-Frequency Ultrasound Imaging Systems.




DOI: https://doi.org/10.26760/elkomika.v8i1.229

Refbacks

  • Saat ini tidak ada refbacks.


_______________________________________________________________________________________________________________________

ISSN (print) : 2338-8323 | ISSN (electronic) : 2459-9638

Publisher:

Department of Electrical Engineering Institut Teknologi Nasional Bandung

Address: 20th Building  Institut Teknologi Nasional Bandung PHH. Mustofa Street No. 23 Bandung 40124

Contact: +627272215 (ext. 206)

Email: jte.itenas@itenas.ac.id________________________________________________________________________________________________________________________


Free counters!

Web Analytics Made Easy - StatCounter

Statistic Journal

Jurnal ini terlisensi oleh Creative Commons Attribution-ShareAlike 4.0 International License.

Creative Commons License