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SISTEM KONTROL TEMPERATUR TABUNG INKUBATOR BAYI MENGGUNAKAN IC AT89C51 Solichan, Achmad; Purnomo, -
MEDIA ELEKTRIKA Vol 1, No 1 (2008): MEDIA ELEKTRIKA
Publisher : Program Studi Teknik Elektro Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2662.907 KB) | DOI: 10.26714/me.1.1.2008.%p

Abstract

Bayi lahir prematur memerlukan alat bantu untuk membuat lingkungan si bayi sesuai dengan suhu dalam kandungan ibu yang disebut sebagai inkubator bayi. Inkubator bayi biasa menggunakan kontrol temperatur dimana pengolahan datanya dilakukan secara analog dengan memakai lempeng binetal untuk mengontrol pemanas listrik. Penelitian ini bertujuan membuat kontrol temperatur inkubator bayi berbasis mikrokontroler dengan cara membuat model inkubator bayi dan sistem kontrolnya. Dari hasil penelitian ini didapatkan bahwa dengan sistem mikrokontroler maka pengambilan data, pengolahan dan hasil pengamatan dapat dilakukan dengan lebih teliti dan dapat berjalan dengan lebih baik.kata kunci : inkubator bayi, sistem kontrol temperatur, mikrokontroler
OPTIMASI JADWAL OPERASI DAN PEMELIHARAAN PEMBANGKIT TENAGA LISTRIK MENGGUNAKAN METODE ALGORITMA GENETIKA Solichan, Achmad; Prasetyo, Moh Toni
MEDIA ELEKTRIKA Vol 6, No 2 (2013): MEDIA ELEKTRIKA
Publisher : Program Studi Teknik Elektro Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (177.867 KB) | DOI: 10.26714/me.6.2.2013.%p

Abstract

Kemajuan teknologi dan konsumsienergi listrik yang meningkat dengan cepat menuntut adanya peningkatan kualitas keandalan sistem tenaga listrik. Untuk mendapat kuantitas daya sistem diperlukan pengoperasian unit pembangkit sebanyak mungkin sedangkan untuk mendapat kualitas daya sistem diperlukan pemeliharaan unit pembangkit sebaik mungkin. Jadwal operasi dan pemeliharaan pembangkit yang tepat menghasilkan keandalan sistem yang optimal antara kuantitas dan kualitas. Kendala yang dihadapi yaitu kesulitan untuk mendapatkan jadwal yang paling tepat karena pengaturan jadwal dilakukan secara manual. Masalah penjadwalan bersifat kombinatorial dan probabilistik sangat tepat diselesaikan dengan sistem optimasi menggunakan kecerdasan buatan algoritma genetika. Penelitian ini bertujuan membuat rancang bangun sistem optimasi penjadwalan operasi dan pemeliharaan unit pembangkit tenaga listrik. Metode optimasi yang digunakan yaitu algoritma genetika dan fungsi objektif berupa LOLE minimal, operator yang dipakai yaitu crossover (0,6), mutasi (0,001) dan elitisme (1). Hasil penelitian menunjukkan metode algoritma genetika dapat menyelesaikan masalah optimasi penjadwalan pemeliharaan dan operasi sistem tenaga listrik.
ANALISA IMPEDANSI PENGETANAHAN ELEKTRODA BATANG TUNGGAL DALAM BETON RANGKA BAJA TERHADAP INJEKSI ARUS BOLAK BALIK Solichan, Achmad; Haryanto, Rudy
MEDIA ELEKTRIKA Vol 3, No 1 (2010): Electrical Engineering
Publisher : Program Studi Teknik Elektro Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (657.323 KB) | DOI: 10.26714/me.3.1.2010.%p

Abstract

Low impedance grounding is necessary to anticipate the return flow that can be directly on the ground. Research caruied out by field observations to determine the impedance value which is derived by a single rod electrode: Testing the impedance by the planting depth electrode arrangement and frequency settings. The results obtained were impedance value to a depth of 50 cm for 3.2 to 4.8 ?, the depth of 100 cm for 3-4 ? and 150 cm depth of 0.4 to 0.1 ?.Key words: Impedance grounding, setting depth grounding. 
UPAYA PENINGKATAN KOMPETENSI MAHASISWA MELALUI PEMBELAJARAN BERKARAKTER DENGAN PENDEKATAN INQUIRY BERBANTUAN CABRI 3D PADA GEOMETRI RUANG Mawarsari, Venissa Dian; Solichan, Achmad
PROSIDING SEMINAR NASIONAL & INTERNASIONAL 2015: Prosiding Bidang Pendidikan,Humaniora dan Agama The 2nd University Research Colloquium
Publisher : Universitas Muhammadiyah Semarang

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Abstract

The purpose of this research is to improve student?s competency (student?s learning achievement) using character-based lesson plan with inquiry approach with Cabri 3D on space geometry subject. The research is a quantitative eperiment by comparing the process before and after the use of the lesson plan. Test, observation, and documentation ware used in the research to support the result. It showed the average pre test result 31,94 and for post test was 85,17. Based on the statistical analysis using paired sample t test, t counted 25,18 and indicated significant improve on the student?s competency. However, the application of character-based lesson plan with inquiry approach with Cabri 3D give significant improvement on space geometry subject.Keywords: character-based lesson plan, inquiry, cabri 3D.
AUDIT DAN KONSERVASI ENERGI SEBAGAI UPAYA PENGOPTIMALAN PEMAKAIAN ENERGI LISTRIK DI KAMPUS KASIPAH UNIMUS Solichan, Achmad
PROSIDING SEMINAR NASIONAL & INTERNASIONAL 2010: Sain, Teknologi, Kimia Sosial dan Humaniora, Kimia
Publisher : Universitas Muhammadiyah Semarang

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Abstract

Krisis energi yang melanda dunia mengharuskan pelaksanaan hemat energi di segala lini dan tempat, termasuk di dalamnya energi listrik.  Kampus Kasipah UNIMUS memiliki tingkat pemakaian ruangan yang cukup tinggi pada saat jam kerja dan daya listrik yang terpasang sering trip karena kelebihan beban. Untuk itu diperlukan audit energi untuk menentukan (klarifikasi) nilai indeks konsumsi energi (IKE) dan membandingkannya dengan standar IKE Asia. Hasil penelitian berupa nilai IKE gedung kampus Kasipah UNIMUS adalah 117,4 kWh/m2. Nilai ini masih di bawah standar IKE gedung perkantoran (240 kWh/m2). Dari hasil ini dapat direkomendasikan dua hal yaitu : pemakaian daya di gedung kampus Kasipah masih dapat ditingkatkan guna mencapai standar minimal peralatan ruangan  dan penaikan kapasitas daya terpasang menjadi 33 kVA agar tidak sering terjadi trip. Kata kunci : krisis energi, audit energi, konservasi energi.
EFEKTIFITAS PEMANFAATAN PASIR PANTAI BERKALSIUM SEBAGAI MATERIAL PENGISI BAHAN ISOLASI RESIN EPOKSI UNTUK ISOLATOR LISTRIK Prasetyo, Moh Toni; Solichan, Achmad
PROSIDING SEMINAR NASIONAL & INTERNASIONAL 2014: PROSIDING SEMINAR NASIONAL HASIL - HASIL PENELITIAN & PENGABDIAN
Publisher : Universitas Muhammadiyah Semarang

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Abstract

Insulation materials that commonly used in air insulation, which, is operated at high voltage, are the porcelain, glass, and polymer materials. One of the insulating polymer materials that are used is epoxy resin because it has several advantages compared to that. However, this insulation material has a degradation of the surface due to environmental and cause insulation coated with dirt and chemicals in the long time. Material that was used in this research was epoxy resin polymer isolation using of comparison values (base material diglycidyl ether of bisphenol-A: hardener material metaphenylene diamine)were 1:1, with the increase of silane and high calcium coastal sand as filler by the value of 10%, 20%, 30%, 40%, and 50%.Research was done in laboratory according to standard IEC 587: 1984. In this study, the effect of variation in stoichiometry to the hydrophobic contact angle value, leakage current waveforms,and surface degradation caused by erosion and tracking processes and tracking time were analyzed.From the results of the research, it was obtained that the epoxy resin that was used in this research are categorized as hydrofobik and partially wetted. The increase concentration of silane dan high calcium coastal sand as filler caused the increase in contact angle which meant the increase in surface insulation resistance, so that leakage currents flew on the surface not easily and slow down the aging or the degradation decreasing on the surface of insulating material.Concentration value of filler that had the optimal performance of the tracking process and erosion was 40%.
ALAT UKUR TINGGI DAN MASSA BADAN OTOMATIS BERBASIS MIKROKONTROLLER ATMEGA 8535 Kahfi, Shokhibul; Solichan, Achmad; Kiswanto, Aris
MEDIA ELEKTRIKA Vol 8, No 2 (2015): MEDIA ELEKTRIKA
Publisher : Program Studi Teknik Elektro Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (544.051 KB) | DOI: 10.26714/me.8.2.2015.%p

Abstract

ABSTRACT This combination; Automatic mass and high measurement device based on microcontroller ATMega 8535, is a combination which can measure for high and mass digitally. This combination consist of some blocks, power supply 5V and there are 2 censors; ultrasonic and optocoupler which is an input of this device, and microcontroller ATMega 8535 is as a program controller and LCD is as presenter. Censor ultrasonic HSCR-04 will detect things surrounding censor, censor radiator will send ultrasonic phase. If ultrasonic phase bounches back to the receiver, it means there is an object surroundings censor and optocoupler censor will count the hole in analog weights. Then, the second result is sent to microcontroller to be calculated to LCD to be shown. Keywords : Keywords: ultrasonic censor, optocoupler, Microcontroller ATMega 8535, LCD
APLIKASI ATMEGA8535 SEBAGAI PENGONTROL ALAT PENETAS TELUR Rofingi, Achmad; Supradono, Bambang; Solichan, Achmad
MEDIA ELEKTRIKA Vol 4, No 2 (2011): MEDIA ELEKTRIKA
Publisher : Program Studi Teknik Elektro Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1090.749 KB) | DOI: 10.26714/me.4.2.2011.%p

Abstract

Poultry demand increasingly higher demands adequate supply of poultry meat in the community. Utilizing modern farming technology for the mass production of seedlings poultry egg incubator that uses electrical equipment. The tool have a manual thermostat can not adjust the type of eggs that will be hatched and can not compensate for extreme weather changes. Microcontroller technology produces devices that can regulate the temperature of the egg incubator and compensate for extreme climate change. In this research aims to apply egg incubator tool microcontroller ATMega8535 as a temperature regulator.Keywords: egg incubator equipment, temperature control, ATMega8535
PEREKAMAN DATA SENSOR KE GOOGLE SHEETS MENGGUNAKAN SISTEM MIKROPENGENDALI ATMEGA16A DAN APLIKASI SERVER Saptadi, Arief Hendra; Solichan, Achmad
MEDIA ELEKTRIKA Vol 9, No 2 (2016): MEDIA ELEKTRIKA
Publisher : Program Studi Teknik Elektro Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (572.689 KB) | DOI: 10.26714/me.9.2.2016.%p

Abstract

There are various occasions where data taken from field measurements need to be stored remotely, but yet accessible from many places and by any means. The emergence of online data storage for documents such as Google Docs had made it possible to build a system that acquires data from sensors and stores them as an online document accessible anywhere. The purpose of this research is to develop a system prototype to store and display data from the result of measurements toGoogle Sheets through the use of ATmega16A microcontroller system and a server application. The proposed system consists of a data acquisition unit, a PC that acts as a server and web services. The data acquisition unit is made up from an ATmega16A microcontroller, LM35 astemperature sensor, photoresistor for light intensity measurement and FT232RL module for serial communication. Application server that runs on a PC is written in Processing programming language.The web services being used are Temboo and Google Sheets. From the test results it can be concluded that data acquisition unit had been able to transmit data to PC via serial communication, the server application was successfully built in terms of interface design and functionalities and a table in Google Sheets had been capable to store measurement results and display them correctly. In order to deliver a sense of real-time measurement, it is advisable to add a real-time clock chip module to microcontroller system such that the momentthe data arrive from sensors is recorded. The server application can be improved by the addition of local data logging feature to anticipate the loss of data caused by disturbances during onlinetransmission. Keywords: Data Logging, Sensors, Google Sheets, ATmega16A, Server Application
EFESIENSI MUSICOOL-22 DENGAN PROSES RETROFIT PADA AC MEREK DAIKIN 3 PK DI UNIT REKTORAT UNIMUS -, Khoeri; Solichan, Achmad; Raharjo, Samsudi
MEDIA ELEKTRIKA Vol 10, No 1 (2017): MEDIA ELEKTRIKA
Publisher : Program Studi Teknik Elektro Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (341.948 KB) | DOI: 10.26714/me.10.1.2017.%p

Abstract

Mechanical air conditioning to regulate the temperature , circulation , humidity and cleanliness of the air inside the room . Air conditioning (Air Conditioner) maintaining the condition of the air inside so that the occupants of the room to be comfortable . The purpose of this study was to compare the efficiency of the use of refrigerant R - 410A and MC - 22 at the brand split air conditioners Daikin 2 PK with retrofit methods . The results obtained during the test indicates the use of refrigerants MUSIcool-22 more efficient 19.51 % compared with the use of refrigerant R - 410 Aand Performance temperatures MUSIcool-22  colder  0,50C of Performance temperature refrigerant R - 410A. Keywords: Air Conditioning, R-410A, MUSIcool-22, Retrofit, Temperature