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All Journal JURNAL NASIONAL TEKNIK ELEKTRO INVENTORY : Industrial Vocational E-Journal On Agroindustry Journal of Industrial Community Empowerment SAINTI: Majalah Ilmiah Teknologi Industri
Pharmayeni Pharmayeni
Politeknik ATI Padang
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering

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Perancangan Sensor Gerak Benda pada Benturan Berlebihan untuk Pengujian Pre-Straining Spring Momentum Exchange Impact Dumper (PSMEID) Dengan Metoda Prediksi Waktu Benturan (Preview) Darmawan Darmawan; Lovelyson Lovelyson; Pharmayeni Pharmayeni
JURNAL NASIONAL TEKNIK ELEKTRO Vol 9, No 3: November 2020
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (585.031 KB) | DOI: 10.25077/jnte.v9n3.713.2020

Abstract

Vibration that occurs due to excessive impact can damage the construction of an object. Excessive Impact which usually occurs at certain times such as aircraft landing gear collisions with runways that can be fatal if the vibrations produced cannot be controlled properly. One method to reduce vibration caused by excessive impact is called PSMEID (Pre-Straining Momentum Exchange Impact Dumper), which in this case utilizes momentum from a period placed in the main period in which the direction of the style is opposite to the force produced by the collision. In previous studies the PSMEID system was activated shortly after the collision, due to the absence of a sensor mechanism to detect the vibrations and movements of objects that occur. In this case, this research tries to design a sensor system that can detect the movement of objects before an Excessive impact occurs. By knowing the position and condition of the object just before the collision, it can be predicted the time of the collision so that the time of mass release with a spring push that has been stretched (pre-straining) in the opposite direction from the direction of collision gives more optimal results to reduce vibrations from the collision. This study designed various of sensors system consisting of vibration sensors, acceleration sensors and proximity sensors that work in such a way that the PSMEID activation time is close to / equal to the time of the initial collision so that momentum and acceleration can be reduced. In the initial testing this sensor system only involves vibration sensor, where PSMEID can be activated 32 millisecond.Keywords : Excessive Impact, PSMEIDAbstrakGetaran yang terjadi diakibatkan oleh benturan  yang berlebihan (Excessive Impact) dapat merusak kontruksi sebuah benda. Excessive Impact yang biasanya terjadi pada waktu tertentu saja seperti benturan roda pendaratan pesawat dengan landasan pacu yang dapat berakibat fatal jika getaran yang dihasilkan tidak dapat dikontrol dengan baik. Salah satu metoda untuk mereduksi getaran yang diakibatkan dari (Excessive Impact) disebut sebagai PSMEID (Pre-Straining Momentum Exchange Impact Dumper), dimana dalam hal ini memanfaat momentum dari sebuah masa yang ditempatkan pada masa utama yang arah gayanya berlawanan dengan gaya yang dihasilkan oleh benturan. Pada penelitian sebelumnya system PSMEID diaktifkan sesaat setelah terjadinya benturan, karena tidak adanya mekanisme sensor untuk mendeteksi vibbrasi dan pergerakan benda yang terjadi. Maka dalam hal ini, penelitian ini mencoba merancang sistem sensor yang dapat mendeteksi pergerakan benda sebelum terjadinyanya Excessive impact. Dengan mengetahui posisi dan kondisi benda sesaat sebelum terjadi benturan maka dapat diprediksi waktu benturan sehingga waktu pelepasan massa dengan dorongan pegas yang sudah diregangkan (pre-straining) dengan arah yang berlawanan dari arah benturan memberikan hasil yang lebih optimal untuk mereduksi getaran dari benturan yang terjadi. Penelitian ini merancang system multinsensor yang terdiri dari sensor vibrasi, sensor percepatan dan sensor jarak yang bekerja sedekian rupa sehingga waktu aktifasi PSMEID mendekati/sama dengan waktu terjadinya benturan awal sehingga momentum dan percepatan dapat direduksi. Pada pengujian awal system sensor ini hanya melibatkan sensor vibrasi saja, dimana PSMEID mampu diaktifkan 32 ms.Kata Kunci : Excessive Impact, PSMEID
Penerapan Pengendalian Persediaan Bahan Baku Ban dengan Model Probabilistik dan Sistem Kuantitas Pemesanan Tetap Rizki Alfi; Muhammad Harif; Pharmayeni Pharmayeni
INVENTORY: Industrial Vocational E-Journal On Agroindustry Vol 3, No 1 (2022): Published in June 2022
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/inventory.v3i1.71

Abstract

Inventory of raw materials is very important for the smooth production of the company and meet consumer demand for the company in market demand. The demand for tire production fluctuates and causes the demand for products not to need to be met to order, due to the shortage of raw materials. To solve the shortage of raw materials, the company holds special orders in consideration of savings in ordering the cost of ordering messages. To overcome the shortage of raw materials, the company holds special orders or sudden orders which will increase the cost of the message. The purpose of this study is to determine the optimum ordering of raw materials to minimize total inventory costs by using a probability model of raw material inventory control with a fixed order quantity system (Q method). From the results of research using the probabilistic model of inventory control method Q method, obtained the optimal order quantity (q*), reorder point (rop), and safety stock (ss) with total inventory costs more efficient compared to the total inventory costs of the company's current policies. what is to be achieved in inventory control is to minimize the cost of ordering, and the cost of savings to the company.
Instalasi Digester dan Pelatihan Pembuatan Biogas dari Kotoran Sapi Untuk Bahan Bakar Industri dan Rumah Tangga Rudianto Rudianto; Zulhamidi Zulhamidi; Pharmayeni Pharmayeni; Irna Ekawati; Gustiarini Rika Putri
Journal of Industrial Community Empowerment Vol 1, No 2 (2022): Published in October 2022
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (643.488 KB)

Abstract

The issue of renewable energy sources has become a concern, especially after energy sources using fossil fuels are running low. One form of renewable energy that has not been managed optimally is a source of energy that comes from livestock waste from livestock. This livestock waste contains potential that is beneficial to the community. LIvestock waste in the form of cow dung is processed into biogas and can be used as a source of fuel for the community. Dairy farming in Nagari Lasi, Canduang District, Agam Regency, West Sumatra Province, has had a very positive influence on the community, including in the economic aspect. Since then, individuals or communities have started to open businesses, both similar businesses and businesses related to livestock activities. Currently the number of cattle in Nagari Lasi has reached around 1000 heads, plus other livestock such as buffalo and goats. The number of livestock so that the source of cow dung waste is also widely available to be processed as a renewable energy source. One of the tri dharma of higher education for lecturers is to carry out community service. For this reason, the lecturer of the Department of Agro-Industrial Engineering at the ATI Polytechnic Padang carries out service in a dairy farm in Nagari Lasi, Canduang District, Agam Regency, West Sumatra Province. For the initial stage, a digester is built which is a device that becomes a place where organic matter (cow dung) is broken down by bacteria anaerobically (without air) into CH4 and CO2 gases. This CH4 gas is called biogas which can be used as fuel. In addition to producing biogas, the leftover sludge from the dried process will become compost. This compost can also be used by the community for agriculture. The fermentation process that occurs in the digester has produced biogas and can be used as fuel. For 50 liters of cow dung, after being fermented it produces biogas which can fully fill a 500 liter capacity package in three hours. And that amount of gas can be used for burning in the stove for two hours continuously. Combustion using the biogas produced is able to boil water with a capacity of three liters in about ten minutes.
PERANCANGAN SISTEM PENGAMBILAN DAN PENGUNGGAH DATA GAMBAR PADA E-NOSE MEMPERGUNAKAN RASPBERRY PI Pharmayeni Pharmayeni; Zulhamidi Zulhamidi; Isra Mouludi
JURNAL ILMIAH TEKNOLOGI INDSUTRI (SAINTI) Vol 15, No 2 (2018): VOL 15 NO 2 DESEMBER 2018
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (492.911 KB)

Abstract

The more sophisticated of the electronic equipment, so the for us to provide information to the public, in this case to provide any information including information about alcohol content in drinks to the public fast dan directly, we can use the internet and a website which can provide information in the form of text,picture, audio or video. In this research we will use the MQ-3 alcohol sensor, the camera and Raspberry pi which the whole system is a live stream means that no data is edited, any data readable by sensor then the data that is directly uploaded to the webserver. The method in this design is used two Raspberry pi3 which one function as client and the other as server, on client side paired a Raspberry camera (picamera), data acquisition AD / DA, and MQ-3 sensor while on server side there apache, mysql with client-server communication system and using python programming language and socket programing. The results of the design show that the MQ-3 and picamera sensors are running well and data can be sent from client to server.
Co-Authors Darmawan, Darmawan Gustiarini Rika Putri Irna Ekawati Isra Mouludi Lovely Son, Lovely Muhammad Harif Rizki Alfi Rudianto Rudianto Zulhamidi Zulhamidi