Aries Pratiarso, Aries
Institut Teknologi Sepuluh November (ITS) Surabaya

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An Adaptive Connectivity-based Centroid Algorithm for Node Positioning in Wireless Sensor Networks Pratiarso, Aries; Kristalina, Prima
EMITTER International Journal of Engineering Technology Vol 3, No 1 (2015)
Publisher : Politeknik Elektronika Negeri Surabaya (PENS)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

In wireless sensor network applications, the position of nodes is randomly distributed following the contour of the observation area. A simple solution without any measurement tools is provided by range-free method. However, this method yields the coarse estimating position of the nodes. In this paper, we propose Adaptive Connectivity-based (ACC) algorithm. This algorithm is a combination of Centroid as range-free based algorithm, and hop-based connectivity algorithm. Nodes have a possibility to estimate their own position based on the connectivity level between them and their reference nodes. Each node divides its communication range into several regions where each of them has a certain weight depends on the received signal strength. The weighted value is used to obtain the estimated position of nodes. Simulation result shows that the proposed algorithm has up to 3 meter error of estimated position on 100x100 square meter observation area, and up to 3 hop counts for 80 meters communication range. The proposed algorithm performs an average error positioning up to 10 meters better than Weighted Centroid algorithm.Keywords: adaptive, connectivity, centroid, range-free.
An Adaptive Connectivity-based Centroid Algorithm for Node Positioning in Wireless Sensor Networks Pratiarso, Aries; Kristalina, Prima
EMITTER International Journal of Engineering Technology Vol 3, No 1 (2015)
Publisher : Politeknik Elektronika Negeri Surabaya (PENS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24003/emitter.v3i1.39

Abstract

In wireless sensor network applications, the position of nodes is randomly distributed following the contour of the observation area. A simple solution without any measurement tools is provided by range-free method. However, this method yields the coarse estimating position of the nodes. In this paper, we propose Adaptive Connectivity-based (ACC) algorithm. This algorithm is a combination of Centroid as range-free based algorithm, and hop-based connectivity algorithm. Nodes have a possibility to estimate their own position based on the connectivity level between them and their reference nodes. Each node divides its communication range into several regions where each of them has a certain weight depends on the received signal strength. The weighted value is used to obtain the estimated position of nodes. Simulation result shows that the proposed algorithm has up to 3 meter error of estimated position on 100x100 square meter observation area, and up to 3 hop counts for 80 meters communication range. The proposed algorithm performs an average error positioning up to 10 meters better than Weighted Centroid algorithm.Keywords: adaptive, connectivity, centroid, range-free.
Pemanfaatan Alat Monitoring Kadar Air Pada Gabah untuk Peningkatkan Kualitas Panen Zainudin, Ahmad; Santoso, Tribudi; Wijayanti, Ari; Pratiarso, Aries; Sudarsono, Amang; Mahmudah, Haniah; Siswandari, Nur Adi; Budikarso, Anang; Syahroni, Nanang; Wahyuningrat S., Hari; Siswanto, Anang; Juliansyah, Farel; Farhan, Donny; Susanti, Tri
DIKEMAS (Jurnal Pengabdian Kepada Masyarakat) Vol 4, No 2 (2020)
Publisher : Politeknik Negeri Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32486/jd.v4i2.457

Abstract

Indonesia merupakan salah satu negara  agraris dimana sebagian besar penghasilan masyarakat Indonesia yaitu dari pertanian. Untuk mempertahan harga jual hasil pertanian, maka diperlukan perhatian khusus dalam penyimpanan hasil panen di gudang terutama kadar air hasil panen. Pada penelitian dalam bentuk kegiatan pengabdian kepada masyarakat ini dibuat sebuah alat monitoring kadar air pada gabah dengan memanfaatkan mikrokontroler node MCU dan sensor kadar air yang terhubung ke internet. Data monitoring kadar air disimpan pada database dan pengguna dapat mengaksesnya melalui perangkat smartphone pada halaman website. Sehingga pengguna dapat mengakses kondisi hasil panen mereka yang ada di gudang bisa dilakukan dimana saja. Kegiatan pengabdian masyarakat dilaksanakan di Desa Kampungbaru, Nganjuk. Berdasarkan hasil implementasi dan pengujian, hasil pembacaan sensor kadar air pada gabah sebesar 14% dapat dikirim ke server dan dapat diakses oleh pengguna menggunakan smartphone.