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All Journal Jurnal Ilmiah Poli Rekayasa Jurnal Teknik Mesin

Vera Veronica

Politeknik Negeri Padang

Author-ID : 2595758

Automotive Engineering Education Energy Engineering Materials Science & Nanotechnology Mechanical Engineering

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Experimental Study on the Effect of Waste Valve Load and the Volume of Air Chamber on the Performance of the Hydraulic Ram Pump (Hydram) to Water the Paddy Field in Pakandangan, Padang Pariaman Regency Ichlas Nur; Nota Effiandi; Vera Veronica
Jurnal Teknik Mesin Vol 14 No 2 (2021): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.14.2.630

This 2019 DIPA Grand’s research designed and fabricated the size of hydraulic ram (hydram) pump utilized in Pakandangan, Padang Pariaman Regency. There is a water source in this area which has not been functioned adequately to irrigate the paddy field of 10 hectares due to the location of the paddy field which is higher than the water source. However, the use of designed hydram pump has no been maximized as the pump’s optimal performance was not determined yet. Therefore, a hydram pump was designed by varying the load of waste valve in the weight of 400 g, 600 g, 800 g, 1,000 g, and 1,200 gr. It was also varied in the volume of the chamber when the pump operated which were 4.86 lt, 5.76 lt, 6.48 lt, 7.29 lt, and 8.1lt. The height (Hd) of the inlet pipe was 1 m, and the lift height (Hs) of the outlet pipe was 5 m. The results obtained from Pump performance increases with increasing cylinder volume. The increase in the load of the exhaust valve volume of the tube remains a significant decrease. Hydram pump performance occurs at a load of 400 g with a tube volume of 8.1 l with an efficiency of 53%

Design of a Transmission Mution Measurement System in Single Mode Cable Index and Multi Step Index Step Optical Models Due to Bending Data Factors with Fingers Using OPM and OTDR Measurement Equipment Hadria Octavia; Aprinal Adila Asril; Vera veronica; Shara Khairunnisa
Jurnal Ilmiah Poli Rekayasa Vol 15, No 1 (2019): -
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

Warping that occurs in fiber optik cables has the potential to cause serious power losses and further leads to optikal fiber rupture. Therefore, it is necessary to measure the effect of the optikal fiber curvature on the power loss generated when the optikal fiber is curved. This study aims to determine changes in the intensity of light output through plastic optikal fibers. this research distinguish the type of single mode cable and multi mode with varying radius. This paper only discusses the calculation of light output that has been affected by the curve of the optikal fiber. from the analysis conducted with a fiber optik cable length of 100 m, attenuation of 0.001 db / km and a bending radius that varies with a bend radius of 8 cm, 2x4 cm and 4 cm. different optikal fiber warping losses are obtained. that single mode cable is better than multimode cable. Kata Kunci : Serat Optik,bending, Redaman, Jari-Jari, Singel mode, Multi mode

Implementasi Sistem Pengukuran Redaman Serat Optik Pada Lekukan Lince Markis -; Vera Veronica -; Uzma Septima -
Jurnal Ilmiah Poli Rekayasa Vol 14, No 2 (2019): -
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

Dutch electronics company, Philips, is testing LiFi technology. LiFi or Light Fidelity is able to deliver broadband internet connections through light intermediaries. According to Philips Lightning Olivia Qiu's Chief Innovation Officer, LiFi technology has great potential for today's digital era. Indeed, if you look at the current world trend, internet connection has now become one of the daily needs of humans just like the lighting needs produced by Philips massively. When radio frequency becomes increasingly dense, the light spectrum is a large untapped resource [kompas, 2018]. Based on the facts stated that communication using optical fiber becomes very important so that to optimize the fiber optic system an implementation of optical fiber attenuation measurements is made. In this study, the method of implementing the measurement of optical fiber attenuation at a wavelength of 875 nm was introduced. This optical fiber attenuation measurement utilizes transmitter and receiver optical fiber systems that are connected to optical fibers with different lengths and curves. Attenuation for the length of 1, 3, 4, 5 and 6 meter optical fibers is 0.034, 0.558, 0.625, 1.156 and 2.170 dB respectively in straight optical fiber conditions. The power values for each optical fiber with lengths 1, 3,4,5 and 6m respectively are 52.21, 51.58, 50.81, 45.08 and 30.05 dB when there are curves. The attenuation values of each 1, 3, 4, 5 and 6 m optical fiber lengths are - 0.746, - 0.8, - 0.864, - 1,384 and - 3,145 dB respectively when there is a curve.

Rancang Bangun Sistem Pemantauan Infus dan Tekanan Darah pada Pasien Rawat Inap secara Real Time Vera Veronica -; Rahmadi Kurnia -
Jurnal Ilmiah Poli Rekayasa Vol 12, No 2 (2017)
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

The problems that often arise in inpatients, especially those that need special handling such as infusion fluids should be given is often the occurrence of negligence in the infusion bottle examination is good condition of fluids in infusion bottles and the number of droplets per minute that is not appropriate. In addition, the patient will also be disrupted when the nurse should take care of the patient's blood pressure periodically. To overcome these problems need to be made a system that can monitor all of it in real time.This system design process requires a hardware and software that is integrated in such a way that it can be used to monitor the infusion and blood pressure of the patient. The main hardware required is the infrared sensor and the pressure sensor where the sensor will be controlled by the microcontroller device which the results can be sent to the monitoring computer wirelessly. From the overall testing of the design that has been made, it can generally be applied but there are still shortcomings that occur in measuring instruments, especially blood pressure gauges where the average error occurred in the measurement of systolic pressure of 8.42% and the average error that Occurs in diastolic measurements of 4.90% and on data delivery there is a significant delay spike when given a barrier.

Co-Authors Aprinal Adila Asril Hadria Octavia Ichlas Nur Lince Markis Nota Effiandi Rahmadi Kurnia Shara Khairunnisa Uzma Septima -

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