Article Per Year (5 Year)
p-Index From 2021 - 2026
0.408
P-Index
This Author published in this journals
All Journal International Journal Science and Technology (IJST) Journal of Engineering, Electrical and Informatics
Patrisius Kusi Olla
Unknown Affiliation
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Design and Development of a Negative Pressure Wound Therapy Device Citra Ananda Adri Hanifa; Mohammad Rofi’i; Patrisius Kusi Olla
International Journal Science and Technology Vol. 4 No. 2 (2025): July: International Journal Science and Technology
Publisher : Asosiasi Dosen Muda Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56127/ijst.v4i2.2199

Abstract

This study presents the design and development of a Negative Pressure Wound Therapy (NPWT) device aimed at improving the treatment of chronic wounds, particularly diabetic foot ulcers in patients with diabetes mellitus. The primary objective is to create an efficient, user-friendly, and portable wound therapy solution suitable for both clinical and home-based care. The device utilizes negative pressure to enhance blood perfusion, reduce exudate, and lower infection risk, thereby accelerating the healing process. The system is built using a NodeMCU ESP32 microcontroller, a vacuum motor pump, HX710 pressure sensor, solenoid valve, and a Nextion LCD interface. It supports three therapy modes—Continuous, Intermittent, and Dynamic—controlled by a PID algorithm to maintain stable pressure between -25 to -150 mmHg. Testing was conducted at three measurement points: battery voltage, sensor accuracy, and LCD interface functionality. Results indicate that the device performs effectively within expected operational parameters across all modes. The NPWT prototype offers a cost-effective, functional alternative for wound care management and shows promise for further development, including digital integration and broader clinical applications.
Heavy Dusty Over Head Stirrer Design and Construction M.Ali Imron Rosyidi; Imam Tri Harsoyo; Patrisius Kusi Olla
Journal of Engineering, Electrical and Informatics Vol. 5 No. 2 (2025): June: Journal of Engineering, Electrical and Informatics
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jeei.v5i2.4715

Abstract

This study aims to evaluate the performance of a designed overhead stirrer, specifically focusing on the accuracy of rotational speed (RPM) and time control (timer). Speed testing was conducted using a Fluke 931 tachometer as a reference instrument, while a digital stopwatch was used for time measurement. Speed tests were carried out at four levels: 500 RPM, 1000 RPM, 1500 RPM, and 2000 RPM, with three repetitions for each. The results showed error percentages of 1.27%, 0.033%, 0.133%, and 0.1165%, respectively. All values remained within the acceptable error tolerance of ±10%, indicating that the speed control system operates accurately and consistently. Timer functionality was tested at preset durations of 3 minutes (180 seconds), 6 minutes (360 seconds), and 9 minutes (540 seconds), each repeated three times. The test results showed a time deviation of 0.34 seconds at 3 minutes, no deviation at 6 minutes, and a deviation of 2.67 seconds at 9 minutes. These results indicate that the timer also performs with a high level of precision. Overall, the tested overhead stirrer has met the standards for measurement accuracy in both speed and time. This demonstrates that the device is suitable for laboratory or research applications that require controlled mixing of liquids with precise timing and speed regulation measurement area.
Co-Authors Citra Ananda Adri Hanifa Imam Tri Harsoyo M.Ali Imron Rosyidi Mohammad Rofi’i