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KLASIFIKASI PENYAKIT MELANOMA MENGGUNAKAN WHALE OPTIMIZATION ALGORITHM SEBAGAI SELEKSI FITUR Aiman Muhamad Basymeleh; Panca Mudjirahardjo; n/a Rahmadwati
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
Publisher : Jurnal Mahasiswa TEUB

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The biggest challenge in melanoma is distinguishing between benign and malignant skin diseases with various problems related to time and patient health to differentiate lesions in patients. To reduce these problems, an image classification system is required using several feature extraction methods on images, namely Gray Level Co-occurrence Matrix, contour features, and HSV image features. In this study, feature selection was also carried out using a metaheuristic algorithm, namely the Whale Optimization Algorithm (WOA), as feature optimization in the next stage, which is the classification stage using the Multilayer Perceptron Neural Network method. However, the results of testing the Multilayer Perceptron Neural Network on these feature extractions showed very good performance, especially in the case of HSV color feature extraction and Gray Level Co-occurrence Matrix (GLCM). In addition, the feature selection also showed the same results from the same feature extraction with a relatively faster prediction time. Keywords : Melanoma, Feature Extraction, Feature Selection, Whale Optimization Algorithm, Classification

RANCANG BANGUN SEPEDA LISTRIK TERINTEGRASI SISTEM KONTROL KECEPATAN, INTENSITAS CAHAYA, DAN PERINGATAN BAHAYA Yudika Putra Perdana Pangaribuan; Erni Yudaningtyas; Raden Arief Setyawan
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
Publisher : Jurnal Mahasiswa TEUB

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Electric bicycles in the modern era require useful features to transform transportation into a space for innovation, aiming for energy-efficient, environmentally friendly, and safe riding experiences. This research integrates several features, including the control system for bicycle lighting, hazard warning using a buzzer, PID control for the bicycle motor, and the use of supercapacitors in the battery system. The objective of the research on the bicycle lighting control system is to achieve stable and accurate control of light intensity with an average error rate of 5.887%, a recovery time of 1.032 seconds, and power consumptionranging from 2.784W to 8.664W. The objective of the hazard warning system using a buzzer is to create an automatic warning system based on Mamdani fuzzy logic, where the experimental PWM output matches the PWM output from the fuzzy design in MATLAB. The purpose of the PID control research is to enhance the performance of the bicycle's BLDC motor, aiming to reduce overshoot by 80%, rise time by 50%, and settling time by 50%. The experimental results of the implemented supercapacitor battery system demonstrate a decrease in the maximum voltage output from 42.2V to 35.5V and a reduction in the battery'speak current from 19.1A to 16.9A. Furthermore, the output power exhibits an average decrease from 679.172W to 586.508W. Keywords: PID, Light, Buzzer, Supercapacitor

RANCANG BANGUN SEPEDA LISTRIK TERINTEGRASI SISTEM KONTROL KECEPATAN, INTENSITAS CAHAYA, DAN PERINGATAN BAHAYA Wiam Mardliy Syahrir; Erni Yudaningtyas; Raden Arief Setyawan
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
Publisher : Jurnal Mahasiswa TEUB

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Electric bicycles in the modern era require useful features to transform transportation into a space for innovation, aiming for energy-efficient, environmentally friendly, and safe riding experiences. This research integrates several features, including the control system for bicycle lighting, hazard warning using a buzzer, PID control for the bicycle motor, and the use of supercapacitors in the battery system. The objective of the research on the bicycle lighting control system is to achieve stable and accurate control of light intensity with an average error rate of 5.887%, a recovery time of 1.032 seconds, and power consumption ranging from 2.784W to 8.664W. The objective of the hazard warning system using a buzzer is to create an automatic warning system based on Mamdani fuzzy logic, where the experimental PWM output matches the PWM output from the fuzzy design inMATLAB. The purpose of the PID control research is to enhance the performance of the bicycle's BLDC motor, aiming to reduce overshoot by 80%, rise time by 50%, and settling time by 50%. The experimental results of the implemented supercapacitor battery system demonstrate a decrease in the maximum voltage output from 42.2V to 35.5V and a reduction in the battery's peak current from 19.1A to 16.9A. Furthermore, the output power exhibits an average decrease from 679.172W to 586.508W. Keywords: PID, Light, Buzzer, Supercapacitor

ANALISIS PENGARUH PENINGKATAN PASOKAN OKSIGEN PADA OPEN CATHODE PEMFC (PROTON EXCHANGE MEMBRANE FUEL CELL) DENGAN MENINGKATKAN KADAR OKSIGEN UNTUK MENCAPAI UNJUK KERJA FUEL CELL YANG OPTIMAL Patrick Commanevendi; Waru Djuriatno; Eka Maulana
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
Publisher : Jurnal Mahasiswa TEUB

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The performance of PEMFC is highly dependent on the level of oxygen supply to the cathode. The diffusion rate of oxygen through the cathode catalyst layer is influenced by factors such as the thickness and porosity of the layer, the oxygen concentration in the gas flow, as well as the temperature and pressure of the fuel cell. The level and quality of oxygen supply to the cathode play a crucial role in the fuel cell's performance. This research will discuss the analysis of the influence of increasing oxygen supply by increasing the oxygen content to the cathode and examine its effects on the performance of the Open Cathode PEMFC. This study utilizes a specialized system to support the measurement and reading of oxygen content values in the air using an oxygen sensor, as well as automation using a solenoid valve from a pure oxygen gas cylinder to achieve optimal oxygen content for the performance of the Open Cathode PEMFC. The research will be conducted by performing several experiments to increase the oxygen content in the vicinity of the fuel cell, which has been provided with a box-shaped space with a constant flow of hydrogen gas pressure into the fuel cell. Then, a hose will fill the space with pure oxygen gas mixed with ambient air from an air compressor to obtain the desired oxygen content value. The pressure of the oxygen gas and ambient air from this compressor is controlled by a solenoid valve. Subsequently, the voltage, current, and power output of the fuel cell will be measured from several experiments of increased oxygen content, which will be read using an oxygen sensor.

RANCANG BANGUN SEPEDA LISTRIK TERINTEGRASI SISTEM KONTROL KECEPATAN, INTENSITAS CAHAYA, DAN PERINGATAN BAHAYA Eldoni Tuah Rito Purba; Erni Yudaningtyas; Raden Arief Setyawan
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
Publisher : Jurnal Mahasiswa TEUB

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Electric bicycles in the modern era require useful features to transform transportation into a space for innovation, aiming for energy-efficient, environmentally friendly, and safe riding experiences. This research integrates several features, including the control system for bicycle lighting, hazard warning using a buzzer, PID control for the bicycle motor, and the use of supercapacitors in the battery system. The objective of the research on the bicycle lighting control system is to achieve stable and accurate control of light intensity with an average error rate of 5.887%, a recovery time of 1.032 seconds, and power consumptionranging from 2.784W to 8.664W. The objective of the hazard warning system using a buzzer is to create an automatic warning system based on Mamdani fuzzy logic, where the experimental PWM output matches the PWM output from the fuzzy design in MATLAB. The purpose of the PID control research is to enhance the performance of the bicycle's BLDC motor, aiming to reduce overshoot by 80%, rise time by 50%, and settling time by 50%. The experimental results of the implemented supercapacitor battery system demonstrate a decrease in the maximum voltage output from 42.2V to 35.5V and a reduction in the battery'speak current from 19.1A to 16.9A. Furthermore, the output power exhibits an average decrease from 679.172W to 586.508W. Keywords: PID, Light, Buzzer, Supercapacitor

ANALISIS PENGARUH EXTERNAL HUMIDIFIER TERHADAP KINERJA OPEN CATHODE PROTON EXCHANGE MEMBRANE FUEL CELL Adrio Irfan Fauzi; Waru Djuriatno; Eka Maulana
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
Publisher : Jurnal Mahasiswa TEUB

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Fuel cell is one of the environmentally friendly renewable energy generators. The fuel cell requires oxygen and hydrogen which act in the membrane so that it can generate electricity. The results of the reaction that occurs in the fuel cell are electricity, heat and water so that it is more environmentally friendly. However, as a generator of renewable electrical energy, fuel cells have several drawbacks, including the need for balanced oxygen and hydrogen pressure, proper working temperature and proper humidity in order to maintain the performance of the fuel cell itself. This fuel cell stack requires optimal humidity in order to maintain the performance of the fuel cell itself. An external humidifier is one of the solutions to keep fuel cell moisture in order to make its performance more efficient. In this study, a humidifier system is applied which utilizes vibrations from an ultrasonic humidifier to convert water into a gas phase and a fan as a medium for transporting water vapor to the fuel cell. Water in the gas phase will mix with the surrounding air which will be absorbed by the open cathode fuel cell. In this system, DHT 22 functions as a moisture detector around the fuel cell as feedback so that the controller can maintain the ambient humidity value.

RANCANG BANGUN PROTOTIPE MESIN PEMOTONG PLAT BESI DUAL AXIS BERBASIS ESP-32 TERINTEGRASI APLIKASI SMARTPHONE Raihan Zhifhanur Muhammad; Mochammad Rusli; Bambang Siswojo
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
Publisher : Jurnal Mahasiswa TEUB

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Iron plates in the industry must go through a forming process such as cutting before being used as needed. One of the machines that can be used in cutting iron plates is CNC (Computer Numerical Control). However, the cost of CNC is quite expensive that small industries in particular cannot afford to use these machines. The purpose of this research is to design a prototype dual axis iron plate cutter that uses the ESP-32 microcontroller as a control center that can integrate with the RemoteXY application on a smartphone. This research will be carried out by designing the assembly of electronic sub-components supporting the system, designing the microcontroller algorithm, and designing the RemoteXY application that is used to communicate with the system. Based on the test, the design of the tool made complies with the expected specifications where the tool is able to simulate cutting iron plates in line shapes with automatic or manual modes. On the rotary encoder, the distance reading error was 0.577% for X axis and 0.7109% for Y axis. Both motors are able to function properly with a load voltage close to 50% of the 17-volt input voltage, namely 6.764 volts with load and 8.586 volts without load For the X axis and 7.07 volts with load and 8.515 volts without load for the Y axis. the input and output circuits can work as they should to receive input and control the output. The user interface used using RemoteXY also works well in accepting input, managing output, and using all the features created. Keywords: ESP-32, RemoteXY, Iron Plate, Rotary Encoder, DC Motor

RANCANG BANGUN WEBSITE AUDIT ENERGI Muhammad Ilham Margatama; Rini Nur Hasanah; n/a Nurussaâ€™adah
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
Publisher : Jurnal Mahasiswa TEUB

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This study aims to create a website audit energy. With this website, it is hoped that the energy audit mechanism and audit database storage will be simpler, easier, more efficient, and widely used. This energy audit website design uses JavaScript. In the process of designing an energy audit website, processing and storing load data uses the cloud as a database. This load data will be connected to the website appearance through the reading process in the listing writing program. So, the architecture is front and access the API on the server. The server stores data in the cloud. This research was conducted in 4 experimental buildings with different loads. The IKE values for buildings used in the first, second, third and fourth trials are 12.7430 kWh/mÂ²/month and 152.9160 kWh/mÂ²/year, 1.9127 kWh/mÂ²/month and 22.9524 kWh/mÂ²/year, 21.3067 kWh/mÂ²/month and 255.6804 kWh/mÂ²/year, and 4.974 kWh/mÂ²/month and 59.688 kWh/mÂ²/year. From the calculation of IKE per month, it can be concluded that the use of electrical energy in the first, second, third and fourth buildings falls into the categories of quite efficient, quite efficient, wasteful and very efficient. The costs incurred per month for the first, second, third and fourth buildings are IDR 5,522,972.52, IDR 552,655,538, IDR 2,154,729.598, and IDR 5,748,871.59. Calculations using the website and also manually have the same value, so the website is functioning properly. From the similarity of results obtained, it shows that the website is running well. Using this website can make it easier to audit a building, shorten time, can be accessed anytime and anywhere as long as there is aninternet connection, and is cost effective. Keywords: Energy Audits, Clouds Computing, JavaScript, NodeJs, ReactJs

KLASIFIKASI MUTU BUAH JAMBU KRISTAL BERDASARKAN BERAT DAN WARNA MENGGUNAKAN LOGIKA FUZZY MAMDANI Ruri Ridha Rajwari; Raden Arief Setyawan; Muhammad Aziz Muslim
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
Publisher : Jurnal Mahasiswa TEUB

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Crystal guava is a new guava variety that was developed in Taiwan in 1991, then developed in Indonesia in 2009 until now. The advantages of crystal guava lie in its size, taste, and color. In the commercialization of crystal guava fruit, a certain standard is used as a guarantee of crystal guava fruit quality. The quality grade of crystal guava fruit is determined based on severalparameters, including fruit weight and color. Generally, the process of sorting crystal guava fruit is done by utilizing human labor. To sort crystal guava fruit in large quantities, several workers are needed so that all crystal guava fruit can be sorted. The number of workers also affects the speed of the sorting process. In addition, although there are the same standard criteria, the sortingprocess with human labor will be more subjective according to each worker's assessment. Workers' mental and physical conditions, such as fatigue, lack of focus, or others, can affect workers' assessments. Therefore, a decision-2 making system is needed that can work consistently in determining the grade of crystal guava fruit accurately and objectively according to standard criteria with a uniform assessment point of view. In an effort to help run the crystal guava fruit sorting process, a crystal guava fruit quality classification system based on weight and color using mamdani fuzzy logic was developed. Based on the test results, it shows that the applied mamdani fuzzy logic algorithm is able to classify the quality of crystal guava fruit with an accuracy value of 96%. Keywords : Crystal Guava, Quality, Classification, Fuzzy Mamdani

DETEKSI TINGKAT KEMATANGAN BERDASARKA WARNA BUAH JAMBU KRISTAL MENGGUNAKAN IMAGE PROCESSING n/a Angellica; Raden Arief Setyawan; Muhammad Aziz Muslim
Jurnal Mahasiswa TEUB Vol. 11 No. 4 (2023)
Publisher : Jurnal Mahasiswa TEUB

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Crystal guava is a new guava variety that was developed in Taiwan in 1991, then developed in Indonesia in 2009 until now. Crystal guava is unique in terms of its texture and general shape. The advantages of crystal guava lie in its size, taste, and color. Fruit ripeness is usually determined by several parameters, including textural characteristics, fruit color and aroma, and others. Color is one of the parameters in crystal guava fruit ripeness. In determining the ripeness of crystal guava fruit based on color manually with the human visual eye, it has several disadvantages. Some of them are requiring more labor to sort the fruit, the assessment of ripeness by humans which is subjective and inconsistent in the point of view of vision between one assessor and another, and mental and physical workers such as fatigue, lack of focus and others can also affect the detection of the level of ripeness of crystal guava fruit. This tool was developed in order to help detect the level of ripeness of crystal guava fruit based on color moreconsistently according to the needs of crystal guava fruit farmers and the fatigue and lack of focus of workers can be avoided. Based on the test results show that the camera used is able to detect edges with a kernel size matrix value of 21x21. The camera can also detect the color hue of crystal guava fruit with the threshold value of canny edge detection is 40 and the threshold2 value is 150. Based on the test results it can also be concluded that the system has been tested with an accuracy value of detecting the level of ripeness based on the color hue of the crystal guava fruit of 96% and has an error of 4% of 100 samples of crystal guavafruit tested. Keywords : Crystal guava, Hue, Ripeness Level, Edge detect

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Contact Name
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Contact Email
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Phone
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Journal Mail Official
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Editorial Address
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Location
Kota malang,

Jawa timur

INDONESIA