Electrical Engineering

The competition on industry that being increase, and the rapidly development of industry, encourage the industrialization to move the production more effective and efficient, so can press down the production cost that have to paid. One of them is redesigning machine or production equipment that still have manually characteristic. This research was redesign the machine production that is scales tools which is moved manually, so this condition need a long time in scales process. Redesign the scales tools doing by using the automatic toward it. The method that was choosing is implementation the microcontroller system control technology. Microcontroller is IC that was function to control, give instruction and produce the signals that will send to infrared censor, optocoupler and relay to move conveyor motor and motor arm. Microcontroller used as controlling module system. This control module use OP AMP, ADC, relay, LDR and opto encourage working process. In the last design was produce prototype scales tools that give easily in scales process, so can accelerate prototype working process, production cost more cheap and increasing production capacity.

Berbagai bentuk layanan penggaduan yang telah diimplementasi oleh banyak pemeritah kota, kabupaten, provinsi ataupun pemerintah pusat. Layanan penggaduan tersebut berbentuk layanan pengaduan langsung, call center, sms center, aplikasi berbasis web dan layanan berbasis mobile. Bentuk layanan tersebut memiliki keunggulan dan kelemahan dan masih perlu adanya pengoptimalan penggunaan agar layanan tersebut meningkat efektivitas dan efesiensinya terhadap penanganan pengaduan masyarakat. Pada tulisan ini memaparkan oprtimalisasi penggunaan egovernment yang terinterasi dengan data kependudukan dengan perancangan aplikasi, uji coba aplikasi pada lingkup kecil, perumusan optimalisasi dan kajian dari hasil penerapan aplikasi pada masyarakat kota binjai.

Mobile broadband wireless access system has the stations that might be fixed, nomadic or mobile. Regarding the mobility, the node association procedure is critical for network entry as well as network re-entry during handover. The flexibility and utilisation of MAC protocols scheduling have an important role. The standard provides the Partition Scheme as the scheduling mechanism which separates the allocation of minislots for scheduling. However, minislots cannot be flexibly reserved for centralised and distributed scheduling. In this paper we analysed the scheduling mechanism to improve the utilisation of minislots allocation during the exchange of MAC massages. The centralised and distributed scheduling is implemented in some topology scenarios. The result shows the proposed mechanism has better performance for node association than partition scheme.

Population growth due to urbanization raises a variety of typical urban problems such as decreasing the quality of public services, reducing the availability of residential land, congestion on highways, swelling levels of energy consumption, garbage accumulation, increasing crime rates, and other social problems. These problems are not facing only in cities, but also in regencies, provincial and even at the national level. APIC was formed to answer the need for an organization or collaboration that brings together various stakeholders to solve these problems. The collaboration of various stakeholders in one forum that can synergize all potentials by involving all potential to overcome the problems in a smart way. APIC views the need for an ecosystem that consists of human resources, governance, and adequate technology, which is needed to create smart villages, smart cities, smart regencies, smart provinces and at the end: smart nation. Implementing a smart solution starts with solvi...

Public campus has a mandate to saving of electrical energy. Electrical energy consumption is often wasteful in building. There is tendency wasteful by user. Electronic equipment is often still turn on at idle time. Only a few students want to turn off the equipment and shut down the computer. Saving of electrical energy is not only at idle time but it can be improved into operational hour. It is not depending on idle time or operational hours, but depends on human presence. Implementation of electrical energy saving has to be supported by frugal behavior and equipment technology. In this study, we name system of smart detection and control to electrical energy (Sisdece). This system is consist of hardware and software. Hardware applies passive infrared sensor (PIR) sensor, wireless sensor network (WSN), microcontroller ESP32, access point, relay. Software use C++, hypertext preprocessor (PHP), hypertext markup language (HTML) and android studio. Result of measurement has been done i...

This research is a follow-up research to improve performance of Smart Control Electrical Energy (SiSCE) at idle time. In previous research, device serves to control consumption of electrical energy outside from operational hours of the institution. In this study, device performance is improved to be able to detect activities in one room and control consumption of electrical energy during institutional operating hours. The device is a combination of PIR, WSN, IoT sensor technology and monitoring based on mobile. Work process is to detect activities in one room, if there is no activity, current of electrical energy to device will be stopped. If there is activity, current of electrical energy will be turned back to device. The device is named Smart Detection and Control Electrical Energy (SiSDeCE). Location testing is carried out in campus of Politeknik Negeri Medan. The result was saving energy percentage 50.2%

Hydroponic farming system is an agricultural system that uses direct water as a nutrient without using soil as a planting medium. This system allows smallholder farmers to have the opportunity to develop their crop production with less capital. In addition, hydroponic planting has also been widely adapted by individuals as a personal hobby. Application of technology has penetrated various fields including agricultural fields. One of the technologies that can be applied in a hydroponic farming system is the sensor. Sensors are devices that used to convert a physical quantity into a quantity of electricity so that it can be analyse with a certain electrical circuit. In this study, the technology to be applied is wireless sensor technology applied in human life to help get information quickly and accurately. Sensors to be used in this study are pH sensors, conductivity sensors, temperature sensors and humidity. In addition to sensors, the study also involved Arduino technology. Arduino is a microcontroller board that is used to interact with the environment based on programs that have been made. The final results of the application testing show that the system success to display diagram in real-time in an environment from Arduino board to database and web server.

Penelitian ini mengalisis model struktural bagaimana variabel new media literacy, cross cultural competency, adaptive thinking, virtual collaboration dan social intelligence mempengaruhi kesiapan sumber daya manusia dari perguruan tinggi untuk memasuki industri 4.0. Penelitian dilakukan di perguruan tinggi vokasi yang ada di Kota Medan, dimana sampel ditetapkan dengan purposive random sampling sebanyak 400 responden. Dalam analisis ini dilakukan dengan dengan model struktural dimana variabel social intelligence menjadi variabel intervening untuk kesiapan memasuki industri 4.0. Output penelitian ini diharapkan untuk memberikan masukan dan strategi bagi perguruan tinggi vokasi dalam melakukan penguatan kualitas SDM yang dihasilkan untuk memasuki pasar tenaga kerja. Berdasarkan hasil analisis data full model SEM duperoleh bahwa new media literacy, virtual collaboration, adaptive thinking dan cross cultural competency berpengaruh positif dan signifikan terdahap variabel social intellige...

Population growth due to urbanization raises a variety of typical urban problems such as decreasing the quality of public services, reducing the availability of residential land, congestion on highways, swelling levels of energy consumption, garbage accumulation, increasing crime rates, and other social problems. These problems are not facing only in cities, but also in regencies, provincial and even at the national level. APIC was formed to answer the need for an organization or collaboration that brings together various stakeholders to solve these problems. The collaboration of various stakeholders in one forum that can synergize all potentials by involving all potential to overcome the problems in a smart way. APIC views the need for an ecosystem that consists of human resources, governance, and adequate technology, which is needed to create smart villages, smart cities, smart regencies, smart provinces and at the end: smart nation. Implementing a smart solution starts with solving a small-distributed problem, but it is carried out appropriately and supported by all regional stakeholders thoroughly through synergy. These solutions are implemented in a strategic, gradual, and continuous manner. One of strategic way proposed was The APIC Innovation & Marketplace Hub that will open Supply & Demand of various Smart solutions (cities, public service providers, companies, etc.) that are tested and validated to be implemented. It required sufficient ecosystem to support the hub that is now undergoing and monitored through the Technology Readiness Level (TRL) to show the status of developing smart city.

International standards related to functional characteristics of power transformers, very precisely prescribe permitted noise level of transformers in use. Transformer's noise depends on the power, and a number of numerous factors based on the quality of transformer sheet, cooling mode, the magnetic core construction design and technology of the windings. Final laboratory testing of transformers, which are obligatory at each transformer's delivery to the customer, includes noise measurements as well. This paper presents the methodology of noise measurements of power transformers in ABS Minel Transformers factory in Ripanj, thus confirming high technological level and product's quality, both in terms of transformation of electrical energy, and from the aspect of environmental protection.

Tingkat keandalan sistem tenaga listrik PT. Pusri akan dianalisa dengan menghitung keandalan sistem sekarang ini dan membandingkannya dengan keandalan sistem pada saat setelah penambahan unit pembangkit dan unit beban. Keandalan dihitung dengan menggunakan metode LOLP (Loss of Load Probability) yang dihitung berdasarkan beban puncak harian selama satu tahun, kapasitas pembangkit yang ada dan FOR pembangkit.