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GEMA TEKNOLOGI

gema_teknologi
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Published by Universitas Diponegoro

ISSN : 08520232 EISSN : 2656582X DOI : -

Core Subject : Science,

Computer Science & IT

Gema Teknologi Journal (pISSN : 0852-0232, eISSN : 2656-582X) is an open access journal published by Vocational School, Diponegoro University, Indonesia. Gema Teknologi publishes articles from various engineering disciplines (the results of original scientific research or new scientific studies of literature). Editor receives articles both in English and Indonesian. Gema Teknologi Journal is published 2 (two) times a year, on April and October.

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Articles 166 Documents

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RANCANG BANGUN SISTEM PENGONTROL BATCH MIXER PADA INDUSTRI MINUMAN DENGAN METODE PID BERBASIS ARDUINO UNO R3 Hati, Redi Permata; Subari, Arkhan
Gema Teknologi Vol 20, No 1 (2018): April 2018 - October 2018
Publisher : Vocational School Diponegoro University

Redi Permata Hati, Arkhan Subari, in this paper explain that batch Mixer is a tool that accommodates some of the raw materials to be mixed so that it becomes a usable product. Raw materials can be a liquid, solid and gas. The use of raw materials and way of mixing the raw materials that distinguish Batch Mixer design at each industry. In this thesis, design Batch Mixer consists of two tanks, namely the mixing tank and tank heaters. In the mixing tank, there HCSR-04 Ultrasonic sensor that functions as a detector of the level of the liquid level, and the stirrer motor-driven DC 12 V. While the heater tank, there MAX6675 Thermocouple temperature sensor and heater. There are also three pumps that pump fluid 1, pump 2 and pump fluid mixing. Batch Mixer working process is controlled automatically using the Arduino Uno R3 displayed via HMI Raspberry Pi. The use Arduino Uno R3 allows users to create a variety of issues related to the microcontroller.Â The control system is used to control the work process in a plant. The control system in the Batch Mixer works by two indicators: the water level and water temperature. In the manufacturing system, water temperature control using PID control (Proportional Integral Derivative) with PID tuning method to find the value of Kp, Kd, and Ki. Based on test results, use the most optimal value for use PID control value Kp = 60, Ki = 0.005 and Kd = 0.5. By using the value of the achievement level will be faster and the value of the maximum error of 2.5% is still within the tolerance limits of 3%.

PENGATURAN PERGESERAN SUDUT FASA 120Âº SEBAGAI PEMBANGKIT GELOMBANG KOTAK PADA INVERTER TIGA FASA Septiana, Adella Wulan; Setiono, Iman
Gema Teknologi Vol 19, No 1 (2016): April 2016 - October 2016
Publisher : Vocational School Diponegoro University

Adella Wulan Septiana, Iman Setiono in this paper explain that Three phase electricity is widely used in large and home industries. However, not all industries or electricity users can enjoy three-phase resources because the installation is quite expensive. So that the use of a single phase to three phase electric converter is needed. One alternative that can be done is by making an inverter. The inverter is a hardware device that functions to convert direct current (DC) voltage into alternating current (AC) voltage. From the 220 VAC voltage enter the step up transformer then to the rectifier circuit so that the voltage generated is 380V. Then IC 555 is used as a box wave generator with a frequency output of 322.7 Hz. Then the output goes into the IC 74175 flip-flop circuit as a phase shift that produces three outputs, where each output has a high and low value with a frequency of 53.8 Hz. Output from rectifier and 74175 is used as input for IGBT drivers.Â Keywords: three phase electricity, shift register, flip-flop 74175, inverter.ReferencesAfrizal, Mokhamad Asrul & Ainur Rofiq. Perencanaan dan Pembuatan Modul Inverter 3 Phase sebagai Suplai Motor Induksi pada Penngembangan Modul Praktikum Pengemudi Listrik. Proyek Akhir D3 Teknik Elektro Industri. Surabaya: Politeknik Negeri Surabaya Institut Teknologi Sepuluh November.Agus Cahya & Dedid Cahya. Rancang Bangun Inverter 3 Fasa untuk Pengaturan Kecepatan Motor Induksi. Proyek Akhir Teknik Elektronika. Surabaya: Politeknik Negeri Surabaya Institut Teknologi Sepuluh November.Agus Â Â Â Â Â Â Â Â Â Â Â Â Â Â RusdiyantoÂ Â Â Â Â Â Â Â Â Â & Bambang Susanto. Perancangan Inverter Sinusoida 1 Fasa dengan Aplikasi Pemrograman Rumus Parabola dan Segitiga sebagai Pembangkit Pulsa PWM. http://www.telimek.lipi.go.id/xdata/docs/BS18.pdf.Erfan, JC. 2016. Inverter 3 Fasa 220 Volt dengan Output Sinusoidal Frekuensi 50 Hz menggunakan Arduino dengan Teknik Direct Synthesis. Tugas Akhir S1 Teknik Elektro. Surakarta: Universitas Muhammadiyah Surakarta.

PENGKAJIAN SUHU RUANG PENYIMPANAN DAN TEKNIK PENGEMASAN TERHADAP KUALITAS BENIH KEDELAI Indartono, Indartono
Gema Teknologi Vol 16, No 3 (2011): April 2011 - October 2011
Publisher : Vocational School Diponegoro University

Indartono, in this paper explain that soybean seed quality decline if easy packaging and storage techniques are not good. This research aims to study the technique of packing and room temperature on soybean seed quality during the four months of storage. Research conducted at the Laboratory of Postharvest and Alsintan, BPTP Central Java, with a Completely Randomized Design 3 (three) factors and two replications. The first factor varieties (Burangrang, Willis, and Baluran), the second factor technique packaging (vacuum and without vacuum), and the third factor storage temperature (27-29 Â° C and 6 Â° C). During the four storage observed changes in water content, shrinkage and the weight of soybean seed germination. The results showed that the shrinkage weight, water content and temperature of storage space does not give real effect to the power of germination for 4 four months of storage, and storage techniques vacuum (vacuum) to give an average power of germination is higher than without vacuum treatment, but a statistically not significantly different from other treatments by Duncan's test 95% confidence level for all varieties Key words: soybean, room temperature storage, packaging techniques, the germinated

PEMBUATAN PULP DENGAN MEMANFAATKAN LIMBAH KULIT DURIAN (DURIO ZIBETHINUS MURR) DENGAN CAMPURAN (RESINA COLOPHONIUM) GUNA MENCEGAH DEGRADASI LINGKUNGAN Kurniawan W, Deddy Kurniawan W; Arifan, Fahmi; Adim, M. Dwi Khoirun
Gema Teknologi Vol 17, No 3 (2013): April 2013 -October 2013
Publisher : Vocational School Diponegoro University

Deddy Kurniawan W, Fahmi Arifan, M. Dwi Khoirun Adim, in this article explain that paper is one of the primary needs for humans today . High paper usage is resulting increased in production of paper . On the other hand, paper which are usually made â€‹â€‹from cellulose and hemi-cellulose in wood can result environmental degradation , due to the use of wood and tree felling leads to long-term basis that can increase the temperature of the earth surface ( global warming) . Durian is relatively abundant in Indonesia , durian shell contains high cellulose ( 50-60 % ) and lignin content ( 5 %), also Â a low starch content ( 5 % ) . Durian shell wastes containing fibre Â with dimensions of length and fiber thick wall that be able to bind well when given a synthetic adhesive or an adhesive mineral . Pulp which is produced from durian shell waste in experiments were 1 , 2 , 3 and 4, have a value of Î± - cellulose content of 35 % , 45 % , 27.7 % , 37.5 % and 57.6 %, respectively. When yield value ofÂ 49.2 % , 66.8 % and 48.2 % respectively. Keywords: pulp, durian, gondorukem, digester

APLIKASI METODA CRITICAL PATH METHOD (CPM) DALAM PENJADWALAN KEGIATAN PEMBANGUNAN PERUMAHAN Sutanto, Sutanto
Gema Teknologi Vol 19, No 4 (2018): October 2017 - April 2018
Publisher : Vocational School Diponegoro University

The development of housing development in Indonesia is now showing a very rapid progress in line with the rate of population growth and the increase in income per capita community, so that housing demand is getting bigger. For that much needed planning and scheduling activities of a good housing development projects in accordance with the progress of science and technology in order to have added value to the implementation of the housing development. The Critical Path Method (CPM) application research in guarding housing development activities and the impact on technical constraints in the field is one solution. Based on the results of data processing shows that the use of scheduling activities of housing development projects with Critical Path Method method has resulted in more added value.

SISTEM PAKAR KESEHATAN PADA IBU HAMIL BERBASIS MOBILE WEBSITE Setiyani, Umi; Subari, Arkhan
Gema Teknologi Vol 18, No 3 (2015): April 2015 - October 2015
Publisher : Vocational School Diponegoro University

Umi Setiyani, Arkhan Subari, in this paper explain that the maternal mortality rate in Indonesia is still high, every 1 hour, 2 maternal death. Lack of information about the health of pregnant women, to be one cause. By utilizing the WAP ( Wireless Application Protocol ) and expert systems can be made to maternal health expert system -based mobile website. Maternal health expert system is able to diagnose 15 to 61 illnesses symptoms often suffered by pregnant women . Diagnosis of the disease is designed using forward chaining inference engine with the aid of decision tables and decision trees . In addition the system is also able to calculate the daily calories needed by pregnant women using cooper . So with this system can help pregnant mothers to know their health condition .Â Keywords : expert system , Wireless Application Protocol , the health of pregnant women.ReferencesNatalia, Deasy Astrid. 2006. Pembangunan Sistem Pakar pada Perangkat Mobile dengan WML dan PHP untuk Penyakit Paru pada Anak. SurabayaBroto, Adi Sadewo.2010. Perancangan dan Impelentasi Sistem Pakar untuk Analisa Penyakit Dalam. Semarang : Unversitas Diponegoro.Giarratano, J.C & Rilley G. 1994. Expert Systems: Principles and Programming, 2sd edition. USA : PWS Publishing Co.Kusrini. 2008. Aplikasi Sistem Pakar. Yogyakarta : Penerbit Andi.Martin dan Oxman dalam Kusrini. 2006. Aplikasi Sistem Pakar. Yogyakarta : Penerbit Andi.Turban, E. 1995. Decision Support System dan Expert System. USAÂ :Prentice Hall International IncMulyono, Djoko. 2008. Pembangunan Sistem Pakar pada Perangkat Mobile dengan WML dan PHP untuk Menemukan Penyebab Kerusakan Mesin Isuzu Panther. Semarang : UnakiSurono, dkk.2009. Bahasa Indonesia Untuk Perguruan Tinggi. Semarang: Fasindo PressMc Leod dalam Turban,E. 1995. Decision Support System dan Expert System. USA : Prentice Hall International Inc.Turban dalam Mulyono, Djoko. 2008. Pembangunan Sistem Pakar pada Perangkat Mobile dengan WML dan PHP untuk Menemukan Penyebab Kerusakan Mesin Isuzu Panther. Semarang : UnakiWilson dalam Kusrini. 2006. Aplikasi Sistem Pakar. Yogyakarta : Penerbit Andi.Giarratano dan Rilley dalam Kusrini. 2006. Aplikasi Sistem Pakar. Yogyakarta : Penerbit Andi.Solichin,Achmad. 2013. Pemrograman Web dengan PHP dan MySQL. Jakarta: UBLJuman, Kundang K. 2009. Komunikasi Multimedia.JakartaNokia. 2002. XHTML Guidlines. Finlandia : Nokia Corporation.Priyandari. 2013. Tutorial Database II, Mengenal RDBMS MySQL, http://blog.priyandari.net/2013/tutorial-database-ii-mengenal-rdbms-mysql-1/, diiakses tanggal 15 Agustus 2013.Anonim. 2013. XHTML MP (eXtensible HyperText Markup Language Mobile Profile). http://www.developesrhome.com/, diakses tanggal 4 Juni 2013Dinkes Jateng. 2011. Profil Kesehatan Jateng 2011. Semarang : Dinkes JatengSetiawan (Ed). 1998. Ilmu Kebidanan, Penyakit Kandungan, dan Keluarga Berencana. Finlandia: Penerbit Buku Kedokteran EGCWiknjosastro, Hanifa. 2005. Ilmu Kandungan. Jakarta : Yayasan Bina Pustaka Sarwono Prawirohardjo.Saifuddin, Abdul Bari. 2006. Buku Acuan Nasional Pelayanan Kesehatan Maternal dan Neonatal. Jakarta : Yayasan Bina Pustaka Sarwono Prawirohardjo.Poedyasmoro, SKM. 2005. Buku Praktisi Ahli Gizi (Buku Kuliah Politeknik Kesehatan Malang). MalangWahyudi, doni. 2004. Data Mining Email. Bandung

INOVASI PEMBUATAN ABON IKAN SEBAGAI SALAH SATU TEKNOLOGI PENGAWETAN IKAN Kusumayanti, Heny; Astuti, Widi; Broto, RTD. Wisnu
Gema Teknologi Vol 16, No 3 (2011): April 2011 - October 2011
Publisher : Vocational School Diponegoro University

Heny Kusumayanti, Widi Astuti, RTD. Wisnu Broto, in this paper explain that fish is one of the food-stuff which liked many and consumed by societies besides as commodity of export. In general fish quickly experience of the process of obsolence if compared to other food-stuff is so that required byÂ technology processing of fish to length then energy keep him, one of them is processing of fish become shredded fish. Region sub-district of Mangunharjo have big potency in fishery area, by halves societies work as farmer of fishpond. With existence of training to society about expected by society have adequate knowledge so that can exploit the area potency of to improve his life level. Activity method which used in this devotion is method deliver a lecture, methodâ€™s practice of concerning way making of shredded fish, and question and answer method. The result show that very enthusiastic society to making processÂ of shredded fish. Require to be doneÂ by creativity and innovation in course of processing of shredded fish so that yielded product can certifiable and better. Keyword : Fish, Processing of fish, Shredded fish.

RANCANG BANGUN APLIKASI PENGUKURAN TINGGI BADAN, BERAT BADAN, SUHU TUBUH, DAN TEKANAN DARAH BERBASIS MIKTROKONTROLER ATMEGA16 Dewi, Ratih Kusuma; Subari, Arkhan
Gema Teknologi Vol 17, No 1 (2012): April 2012 - October 2012
Publisher : Vocational School Diponegoro University

Ratih Kusuma Dewi, Arkhan Subari, in paper design and application of measurement stature , body weight , body temperature , and pressure based miktrokontroler atmega16 explain that now almost all uses of automation , both in the world of health . Equipment needed is the automation of the measurement tool capable of measuring several variables simply using a tool . The tool consists of ultrasonic sensors as a means of height measurement , the sensor strain guage as a means of weight measurement , LM35 temperature sensor as a means mengkuran body temperature , as well as a combination of MPX5100DP pressure sensors , motor driver , relay driver , as well as a mini compressor pressure gauge blood . The method used in the manufacture and testing of the tool by comparing the output of this tool with measuring devices in the market . The measurement results will be issued in the form of LCD , Voice Processor , and Database . Height measurement tool using these tools has a percentage error of 1.52 % , while for 2.314 % of body weight , body temperature by 1.62% , to pressure systole of 1.41 % , and for the pressure dystole of 0.858 % . Keywords : Ultrasonic Sensor, Strain Guage Sensor, Sensor LM35, MPX 5100DP, Microcontroller ATMega16.

APLIKASI METODA LINE OF BALANCE (LOB) DAN METODA CRITICAL PATH METHOD (CPM) DALAM PENJADWALAN KEGIATAN PEMBANGUNAN PERUMAHAN Sutanto, Sutanto
Gema Teknologi Vol 17, No 4 (2014): October 2013 - April 2014
Publisher : Vocational School Diponegoro University

Sutanto, in this paper explain that line of Balance is a variation of the linear scheduling method that allows the operating balance so that all activities can continue. In the various International leteratur usually shown as Line of Balance scheduling tool that is only suitable for the project - a project that is composed of repetitive activities, and is not suitable for non-repetitive projects. Network method is introduced towards the end of the 1950s by a team of engineers and mathematicians from Dupont company is working with the Rand Corporation, in an effort to develop a management control system. These systems are intended to plan and control a large number of which have a complex dependency relationship in the construction of engineering design problems and maintenance. Businesses - emphasized efforts to seek methods to minimize the costs, in conjunction with the completion of a period of activity. The system was then known as the critical path method (Critical Path Method/CPM). Research application method Line of Balance (LOB) and Critical Path Method (CPM) scheduling activities in residential construction and the impact on the field of technical constraints is one solution . Conclusions obtained from the results of the research, the use of residential construction projects activities scheduling with Line of Balance method combined with the Critical Path Method method would have added value. Keywords: Housing Development, Application lob and CPM scheduling method.

RANCANG BANGUN MEMONITOR ARUS DAN TEGANGAN SERTA KECEPATAN MOTOR INDUKSI 3 FASA MENGGUNAKAN WEB BERBASIS ARDUINO DUE Wilutomo, Resnu Mauliyana Mukti; Yuwono, Teguh
Gema Teknologi Vol 19, No 3 (2017): April 2017 - October 2017
Publisher : Vocational School Diponegoro University

Resnu Mauliyana Mukti Wilutomo, Teguh Yuwono, 3 phase induction motor must work well and safely. Many types of interference have the potential to interfere with motor performance or even damage the motor itself, including due to power instability which includes imbalance between phase voltages and more phase currents. Monitoring an industrial activity especially monitoring the protection system is very important, it is intended that the disturbance that occurs in the 3 phase induction motor can be analyzed for the value and type of interference. Rapid technological development requires a monitoring system that is practical, fast and accurate. Sensors installed on this device are current sensors, voltage sensors, and speed sensors. The read, current, voltage and speed will be used as input signals to Arduino using the ADC (Analog to Digital Converter) process, Arduino programming uses C ++ language. ESP8266 wifi module) will upload the data from the ADC (Analog to Digital Converter) process to the database which is then displayed on the web using the available internet network. The web programming language used is PHP. This tool makes it easy to monitor a 3 phase induction motor because it can be done anytime and anywhere. There was a difference of Â± 0.24A between the Tang Ampere measuring instrument and reading on the web. A Â± 4V difference occurs between the Multimeter measuring instrument with readings on the Web. The maximum speed of the 3-phase induction motor with no load is 22Rpm between the tachometer gauge and the web display.

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