Implementasi Wireless Sensor Network: Perbandingan Metode Inverse Distance Weight dan Ordinary Kriging untuk Estimasi Kadar Gas Amonia pada Lingkungan Peternakan

Wireless Sensor Network merupakan salah satu teknologi yang menjadi tren saat ini.  Salah satu sektor bidang yang banyak memanfaatkan penerapan teknologi ini adalah agrikultur. WSN banyak digunakan dalam mengatasi permasalahan di sektor agrikultur, salah satunya pada sektor peternakan. Permasalahan yang sering terjadi di industri peternakan adalah gas beracun yang timbul dari kotoran hewan ternak, yaitu amonia. Peningkatan konsentrasi gas amonia di peternakan dapat menyebabkan keracunan serta kematian unggas ketika mencapai kadar konsentrasi tertentu. Dengan pemanfaatan teknologi WSN kadar gas amonia di lingkungan peternakan dapat diketahui secara realtime. Hanya saja besarnya biaya menjadi kendala pemasangan perangkat WSN di lingkungan peternakan. Oleh karena itu pada penelitian ini di usulkan metode yang mampu mengetahui persebaran gas amonia hanya dengan menggunakan beberapa titik stasiun pemantauan. Metode interpolasi mampu mengatasi permasalahan tersebut. Metode interpolasi yang di pakai dalam penelitian ini adalah metode Inverse Distance Weight (IDW) dan Ordinary Kriging (OK). Dari hasil pengujian menggunakan model MAPE metode IDW menghasilkan nilai MAPE sebesar 23,45% dan metode OK mengasilkan nilai MAPE sebesar 24,95%. Dari hasil pengujian tersebut menunjukkan bahwa metode IDW lebih baik daripada metode OK dalam menentukan nilai taksiran gas amonia di suatu titik lokasi. Abstract Wireless Sensor Network is a technology that is becoming a trend today. WSN is widely used in overcoming problems in the subfield of agricultural, livestock. The problem that often occurs in the livestock industries is the poisonous gas that arises from livestock manure, namely amonia. Increasing the concentration of amonia in the farm can cause poisoning and death of poultry when it reaches a certain concentration. With the use of WSN technology, amonia gas levels in the livestock environment can be known in realtime. It's just that the high cost becomes an obstacle to installing WSN equipment in the farm environment. Therefore, this research proposes a method that is able to determine the distribution of amonia gas only by using several monitoring stations. The interpolation method is able to overcome these problems. The interpolation method used in this study is the Inverse Distance Weight (IDW) and Ordinary Kriging (OK) method. From the test results using the MAPE model, the IDW method produces a MAPE value of 23.45% and the OK method produces a MAPE value of 24.95%. From the test results, it shows that the IDW method is better than the OK method in determining the estimated value of amonia gas at a certain location

Analisis Perubahan Resistivitas Batuan Akibat Pencemaran Limbah Cair Menggunakan Pendekatan Laboratorium

Indonesia faces very complex problems in the management of groundwater resources. Industrial wastewater that is not managed properly and discharged into the environment will also have a negative impact on the surrounding community. The Wenner Schlumberger geoelectric method is one of the geophysical methods used to determine soil properties, especially oil content. The geoelectric method is one of the geophysical methods to determine changes in the specific resistance of rock layers below the ground surface. The research will be conducted using 2 methods, namely a direct approach with simulation experiments in the laboratory and a literature approach with literature. The results of the data obtained from the measurement of oil liquid waste injected into the rock arrangement cause the rock resistivity to have a high value due to the low electrical conductivity of the oil. This is because oil is a material that has good insulator properties