Articles
<![CDATA[Prepaid RFID-based Electricity Payment System for Rooming Houses ]]>
<![CDATA[Sitompul, Erwin]]>;
<![CDATA[Syirli, Khoerrudin]]>
<![CDATA[ Jurnal ELTIKOM : Jurnal Teknik Elektro, Teknologi Informasi dan Komputer Vol 4 No 2 (2020) ]]>
Publisher : <![CDATA[P3M Politeknik Negeri Banjarmasin ]]>
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DOI: 10.31961/eltikom.v4i2.205
<![CDATA[A prepaid RFID-based electricity payment system is proposed in this paper. The system is intended for rooming houses where residents’ electricity overconsumption and outstanding payment are to be avoided by the house owner. An RFID-card is used as the payment instrument. The system consists of two units, the card balance top-up unit (CTU) and the energy credit top-up unit (ETU). The balance of the RFID-card is topped up by using the CTU. With the balance stored in it, the RFID-card is to be used to top-up the energy credit at the ETU. Each of the CTU and the ETU is equipped with a microcontroller, an RFID reader/writer and a user interface in the form of keypad and liquid crystal display (LCD). Furthermore, the ETU utilizes a relay to control the flow of electricity. If the energy credit of a room is exhausted, then the supply of electricity to the room is cut off by the relay. The electricity consumption is calculated based on the number of pulses of the calibration LED of a standardized electronic energy meter. The pulse is transmitted to the microcontroller by using an optocoupler. The RFID-card records the current card balance, the card’s top-up history, and the card’s usage history. The energy credit is stored in the EEPROM of the ETU’s microcontroller. The energy meter is tested to measure the energy consumption of two loads based on the pulses of its calibration LED. The actual power of the two loads are 87.25 % and 94.23 % of the corresponding power rating. The card balance top-up process at the CTU and the energy credit top-up process at the ETU are successfully checked. After every balance top-up and credit top-up, the current card balance is calculated and stored correctly. During the electricity usage, the LCD of the ETU shows the remaining energy credit in IDR and kWh. These are accumulatively reduced every time the pulse count reaches a certain reset number, which corresponds to the electrical energy’s unit price applied. The proposed electricity payment system can be a solution for owners of rooming houses to secure electricity payments from the residents. The installation cost of the system is low and without the need to change the existing electricity purchase method of the house. The house owner also can individually adjust the maximum power limit for each room.]]>
<![CDATA[Prototipe Manipulator Lengan Robot Berbasis Arduino dengan Metoda Kendali Lead-Through ]]>
<![CDATA[Erwin Sitompul]]>;
<![CDATA[Sodri Sodri]]>
<![CDATA[ Jurnal Elektro dan Mesin Terapan Vol. 6 No. 1 (2020): Jurnal Elektro dan Mesin Terapan (ELEMENTER) ]]>
Publisher : <![CDATA[Politeknik Caltex Riau ]]>
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DOI: 10.35143/elementer.v6i1.3532
<![CDATA[In this research, a prototype of Arduino-based robot arm manipulator (MLR) controlled with lead-through method is proposed. Through lead-through control methods, the robot movement programming process is replaced by a simple and easy robot movement recording process. The recording process is performed when parts of the MLR are manually moved by the user. Afterwards, the playback process of the recorded movement can be performed. The MLR has 4 degrees of freedom and uses four servo motors to perform rotational movement, upward-downward movement, forward-backward movement, and gripping movement. The servo motors are modified so that each of them has one additional terminal that serves to provide position feedback. On the recording process, the position of all servo motors is recorded on Arduino Uno EEPROM every 200 milliseconds time interval. In the playback process, the recorded position is sent to the servo motors as input, and the MLR repeats the recorded movement. The MLR is tested to move workpieces with accuracy requirement of ± 3cm. MLR is able to repeat the movement to move 1 workpiece for 30 cm displacement with a success rate of 80%. In addition, MLR is able to playback the movement to move 2 workpieces for 60 cm displacement with a success rate of 85%.]]>
<![CDATA[A Prototype of an IoT-based Production Performance and Quality Monitoring System Using NodeMCU ESP8266 ]]>
<![CDATA[Erwin Sitompul]]>;
<![CDATA[Trias Wulandari]]>;
<![CDATA[Mia Galina]]>
<![CDATA[ Techné : Jurnal Ilmiah Elektroteknika Vol. 21 No. 1 (2022) ]]>
Publisher : <![CDATA[Fakultas Teknik Elektronika dan Komputer Universitas Kristen Satya Wacana ]]>
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DOI: 10.31358/techne.v21i1.306
<![CDATA[A production process requires performance and quality monitoring to maintain the product quantity and quality to a prescribed standard. With the product quality classified into three categories (OK, Repair, and Scrap), the quantity count in a finishing process of a car door rubber seal production at PT. XYZ is still done manually. This count is conducted by an operator during the work and is prone to inaccuracies. Furthermore, the count result must be manually processed by an administrator at the end of a work shift. This slow recapitulation process makes optimal production performance and quality monitoring (PPQM) not possible. In this paper, a prototype of an IoT-based system for PPQM is proposed as the solution. The prototype provides three pushbuttons for the operator to directly record the quality of each product, while the quantity is automatically added up. NodeMCU microcontroller sends the production data to Blynk IoT-platform via internet connection. The quasi-real-time data can later be monitored through Blynk mobile application. The application also displays a performance-and-quality rate (PQ rate) as a monitoring indicator. One infrared sensor is utilized to detect the work objects. The operator consistency to enter the data is maintained by the use of a clamp mechanism. Test results show that the infrared sensor works very well within the detection range of 8 mm. The pushbuttons must be pressed for at least 0.98 second, so the input can be correctly relayed by NodeMCU to the server. An MS Excel macro is developed so that the production data can be processed automatically and quickly. The simulation results show that the proposed system can successfully simplify and increases the accuracy of the production data record. Besides, it makes a quasi-real-time PPQM possible.]]>
<![CDATA[Parking Assistance with ATMega16 Microcontroller ]]>
<![CDATA[Dea Rizki Febrianti Tawakal]]>;
<![CDATA[Erwin Sitompul]]>
<![CDATA[ Journal of Electrical And Electronics Engineering Vol 1, No 2 (2016): JOURNAL OF ELECTRICAL AND ELECTRONICS ENGINEERING ]]>
Publisher : <![CDATA[President University ]]>
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DOI: 10.33021/jeee.v1i2.179
<![CDATA[Nowadays safety becomes an increasing important factor in developing cars. Measures come in the form of physical strengthening and diagnostics improvement of the car. One way to improve the safety of a car is by implementing a car parking assistance. Although it already becomes a standard feature in some cars, the additional charge for the customers is still considerably high. This condition motivates the author to develop and implement a car parking assistance with affordable price and suitable for any types of car. The proposed system utilizes the ATmega16 Microcontroller and an ultrasonic sensor. The ultrasonic has a transmitter that produces a pulse in every 62.5 ms, and a receiver that detects the reflected pulse. The time of wave travel and thus the distance can be deduced. An LCD and a LED indicate the presence of object in front of the ultrasonic sensor. The resulting prototype proved that a car parking assistance can be made with low cost. Besides, it can be installed in any car with minimal adjustment.]]>
<![CDATA[Designing and Prototyping Record System for Machine Usage Time ]]>
<![CDATA[Antonia Karima Yanti]]>;
<![CDATA[Erwin Sitompul]]>
<![CDATA[ Journal of Electrical And Electronics Engineering Vol 2, No 1 (2018): JOURNAL OF ELECTRICAL AND ELECTRONICS ENGINEERING ]]>
Publisher : <![CDATA[President University ]]>
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DOI: 10.33021/jeee.v2i1.705
<![CDATA[Machine cost is one of the components of production cost. Accurate record of machine usage time is thus crucial to obtain accurate production cost calculation. Besides, machine usage time can be used as parameter to assess the performance of the machine operator. Furthermore, the data can be used as input to the machine’s maintenance and reparation plan. The author is motivated by the current problems found at Akademi Teknik Mesin Industri (ATMI) Cikarang, where it is still possible to use one machine simultaneously by more than one operator. This causes inaccuracy in calculation of machine usage time and production cost. In this paper, the author proposed a design of device to record detailed data of shop drawing and machine usage time. By the use of this device, a certain machine will be activated and deactivated by using RFID technology, with the whole system controlled by Arduino Mega 2560 microcontroller. Furthermore, the shop drawing and machine usage time will be able to be accessed through a Windows-based interface application, implemented by using Visual Studio. A database is also made available by using Microsoft Access. The use of the proposed device makes possible of accurate measurement of production time efficiency and machine operator performance. Through this improved accuracy, further analysis can be made in order to achieve production improvements in planning, process, and maintenance.]]>
<![CDATA[Blind Belt using Ultrasonic Sensor ]]>
<![CDATA[Arwinanto Sitohang]]>;
<![CDATA[Ignatius Visnu]]>;
<![CDATA[Indra Eka Prayoga]]>;
<![CDATA[Erwin Sitompul]]>;
<![CDATA[Hendra J. Tarigan]]>
<![CDATA[ Journal of Electrical And Electronics Engineering Vol 2, No 2 (2018) ]]>
Publisher : <![CDATA[President University ]]>
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DOI: 10.33021/jeee.v2i2.1083
<![CDATA[Vision impairment has been common phenomena in this day and age. Many people suffer from this impairment with only a few technological supports to help them in daily life. This project created prototype to help people with vision impairment navigating through space. Built in the form of a belt, this project uses Ultrasonic sensor to detect the surrounding object. It uses three ultrasonic sensors attached to the front, left, and right area of the belt. Whenever an object is detected near any of these three areas, buzzer will be ringing. The buzzer is set in three different tones such that the wearer knows which side of the belt the object is.]]>
<![CDATA[Perancangan Detektor Kebocoran Gas LPG Berbasis Arduino yang Terhubung dengan Smartphone ]]>
<![CDATA[Ade Mutaqin]]>;
<![CDATA[Erwin Sitompul]]>
<![CDATA[ Journal of Electrical And Electronics Engineering Vol 3, No 1 (2019) ]]>
Publisher : <![CDATA[President University ]]>
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DOI: 10.33021/jeee.v3i1.1403
<![CDATA[LPG (Liquefied Petroleum Gas) has become the fuel for cooking for most households in Indonesia. The use of LPG for cooking requires high level of caution, due to the danger that may arise from gas leakage. If the molecules of flammable LPG gas are present in the air at a certain concentration and there is a triggerring factor in the form of flame or sparks, explosion and fire may occur. To prevent disasters caused by a LPG gas leakage, the author proposed an Arduino-based LPG gas leak detector (GLD). The GLD is equipped with a MQ-2 gas sensor, capable of measuring the LPG concentration in air in units of parts per million (ppm). Based on the measurement result, the GLD provides an early warning of LPG leakage through 3 condition levels: Normal, Alert, and Danger. Each condition level is characterized by the activation of LED indicators, a miniature air circulation fan , and a buzzer. Alert warning is released when the sensor reads more than 400 ppm (2.05% of LPG Lower Explosive Level). Danger warning is given at 800 ppm (4.10% of LPG Lower Explosive Level) or higher reading. An HC-06 Bluetooth module creates a wireless connection between the GLD and a smartphone. Through an application created on Blynk platform, the smartphone can monitor the LPG concentration at a distance of 10 m from the GLD. The GLD is tested and succeeded to detect gases coming from an LPG cylinder and from a gas lighter. The GLD also runs perfectly for the designed early warning scheme.]]>
<![CDATA[Door Security System Using e-KTP RFID Reading and Passive Infrared Sensor ]]>
<![CDATA[Mohammad Adrian Faisal]]>;
<![CDATA[Erwin Sitompul]]>
<![CDATA[ Journal of Electrical And Electronics Engineering Vol 3, No 2 (2019) ]]>
Publisher : <![CDATA[President University ]]>
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DOI: 10.33021/jeee.v3i2.1487
<![CDATA[A door, as a barrier to limit an access between two spaces, requires a security measure to ensure that only privileged people may pass. In this paper, a door security system using Radio Frequency Identification (RFID) and Passive Infrared (PIR) sensor is proposed. This security system utilizes an electric door lock and an e-KTP (Kartu Tanda Penduduk elektronik/ electronic Indonesian Identity Card) as the key. A sequence of numbers can be read from an e KTP by using an RFID reader. This sequence is unique, making an e-KTP suitable to be used as a key. Furthermore, the door security system is equipped with an alarm. A PIR is used to detect motion, and the alarm will sound if someone passes the door while the alarm is still in active state. The Arduino Mega microcontroller board is used to organize the whole system, consisting the aforementioned reader and sensor, along with two push-buttons, a buzzer, and a solenoid door lock. The system is realized into a prototype in the form of door miniature. A list of scenarios is played through to the system. Only authorized e-KTPs can be used to unlock the door and deactivate the alarm. The door security system successfully fulfils the objective to improve the security level of a door lock mechanism by utilizing an e-KTP as a unique RFID key and by featuring a PIR-integrated alarm.]]>
<![CDATA[Retrofication of Cascade Control System and Implementation of Human Machine Interface in A Water Treatment Plant ]]>
<![CDATA[Erwin Sitompul]]>;
<![CDATA[Dicky Kuswira]]>
<![CDATA[ Journal of Electrical And Electronics Engineering Vol 1, No 01 (2016): JOURNAL OF ELECTRICAL AND ELECTRONICS ENGINEERING ]]>
Publisher : <![CDATA[President University ]]>
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DOI: 10.33021/jeee.v1i01.53
<![CDATA[In Indonesia urban area, due to low water distribution pressure at day, many inhabitants who live far from water distribution center get their fresh water share only at night or sometimes never. In order to ensure even distributed fresh water, there is a certain pressure that needs to be maintained. On a real technical project, an advance cascade controller will be installed in a water treatment plant to control multiple pump for maintaining distribution pressure. Furthermore, a corresponding Human Machine Interface (HMI) will be installed for easier daily monitoring and operation. Measurement data shows improved performance of the system, with only 0.02 bar of pressure error and better load distribution among the operating pumps. Keywords: water treatment plant, cascade controller, Human Machine Interface]]>
<![CDATA[Portable Solar Charger System with Energy Measurement and Access Control ]]>
<![CDATA[Erwin Sitompul]]>;
<![CDATA[Angga Febian]]>;
<![CDATA[Antonius Suhartono]]>
<![CDATA[ Jetri : Jurnal Ilmiah Teknik Elektro Jetri, Volume 20, Nomor 1, Agustus 2022 ]]>
Publisher : <![CDATA[Website ]]>
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DOI: 10.25105/jetri.v20i1.13084
<![CDATA[The utilization of green energy is one trending issue in the current time. People try to increase the portion of energy gained from renewable sources such as wind, solar, hydro, and geothermal energy. In this paper, the authors propose a portable solar charger system (PSCS) that can be used to charge cellular devices when electricity access is not available such as during a power shutdown or when traveling to remote locations. The PSCS is made compact in two parts: the solar panel and the utility box, making the whole system easy to carry. The energy obtained from the solar panel is stored in a dry battery, with the process carefully regulated by a solar charge controller. The PSCS is equipped with passcode protection and gained energy monitor. The electric current from the battery flows to the load through a DC-DC converter and a relay only if a correct passcode is entered via a keypad. The amount of gained energy by the solar panel is monitored by measuring the voltage across the panel and the current flowing through its circuit. The functionality of the PSCS is successfully tested. Eight experiments each with a 3-hour duration are conducted on 6 different days. The amount of gained energy varies from 5.26 Wh to 9.88 Wh (1,300 mAh to 2,670 mAh), which corresponds to 14.5 % and 31.5 % of the potential average daily output energy for the location of Cikarang, Indonesia.]]>
