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All Journal Indonesian Journal of Electronics and Instrumentation Systems Sainteks: Jurnal Sain dan Teknik
Filly Pravitasari
Universitas Insan Cendikia Mandiri
Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering

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Development and Measurement COVID-19 Reminder Hat with Ultrasonic Sensor HC-SR04 Barry Nur Setyanto; Filly Pravitasari; Pramudita Budiastuti; Fanani Arief Ghozali
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 12, No 2 (2022): Oktober
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijeis.78352

Abstract

The development of ultrasonic sensor technology used for suitable equipment is widely carried out, such as distance sticks for the blind, floor cleaning robots, automatic garbage boxes, height measuring instruments, water volume detectors, automatic dispensers, automatic hand sanitisers, etc. In the study, the researchers developed a precision device based on an ultrasonic sensor called the COVID-19 reminder hat. The research design method is research and development, using the Borg and Gall approach. COVID-19 reminder Hat was developed using Arduino nano v3, battery, buzzer, and ultrasonic sensor HC-SR04. The product design was registered with Intellectual Property in the Industrial Design category with registration number A00202102408. The measurement distance of the ultrasonic sensor on flat objects shows an average error percentage of 2.64% from 10 cm to 300 cm with a range of 10 cm. Tests on irregular objects (humans) at an angle of zero degrees and 15 degrees showed an error at a distance of more than 200 cm and stable at a distance of 150 cm. So that 150 cm is the best distance to apply to the COVID-19 reminder hat. The development results show that the product is ready to be continued in the production and sales process.
The Effect of Temperature Variations in the Pressing Process on Glossing Defects Bigborn 2-Tuck Pants Style 3651 Trousers in the Finishing Department of PT. X Afriani Kusumadewi; Feny Nurherawati; Filly Pravitasari
Sainteks: Jurnal Sain dan Teknik Vol 5 No 2 (2023): September
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v5i2.609

Abstract

Abstract: The pressing process is a process of applying heat and pressure at a predetermined time. Temperature, time and pressure in the pressing process in the finishing department play an important role in the quality of the results of pressing garment products at PT X. Various types of main materials used in the garment production process at PT X require different conditions of temperature, time and pressing pressure, so it is necessary to know the appropriate pressing conditions for each type of material. If these three elements are not appropriate, it can give rise to several categories of defects, one of which is often experienced by PT X, namely glossing/shiny defects. The method that used in this research was carried out by experimenting with variations in pressing temperature where the time and pressure variables used were fixed. The temperature variations used in this research include 600C, 700C, 800C, 900C and 1000C.. This research aims to determine the optimum temperature that used in the pressing process in making Bigborn 2-Tuck Pants Style 3651 trousers with the main material composition being 65% Polyester and 35% Katun. The pressing results are then tested for the tensile strength of the fabric towards the warp and towards the weft of the fabric. Based on the experiments carried out, it shows that for temperature variations of 600C and 700C there are poor press defects. At varying temperatures of 800C and 900C, there are no glossing defects. At 1000C it has glossing/shiny defect. Next, to obtain the most optimum temperature conditions, the experiment continued with testing the tensile strength of the fabric. Based on the fabric tensile strength test data, an optimum temperature condition was obtained in the process of pressing Bigborn 2-Tuck Pants Style 3651 trousers, namely at a temperature of 800C. The tensile strength results obtained at a temperature of 800C were 55 kg for the tensile strength of the fabric in the warp direction and the tensile strength of the fabric in the weft direction was 45.5 kg. Keywords: temperature, pressing, glossing
Co-Authors Afriani Kusumadewi Budiastuti, Pramudita Fanani Arief Ghozali Feny Nurherawati Setyanto, Barry Nur