Penentuan Nilai Frekuensi Natural Bangunan UPT Perpustakaan UNS dengan Sensor Accelerometer pada Handphone Android: Rio Riantana, Darsono, Agus Triyono

Rio Riantana Rio Riantana (Program Studi Fisika, Universitas Sebelas Maret Surakarta, Jl. Ir. Sutami No.36A Kentingan, Surakarta, 57126)
Darsono Darsono (Program Studi Fisika, Universitas Sebelas Maret Surakarta, Jl. Ir. Sutami No.36A Kentingan, Surakarta, 57126)
Agus Triyono Agus Triyono (Stasiun Geofisika, Badan Meteorologi dan Geofisika Yogyakarta, Jl. Wates Km. 8, Kec. Gamping, Balecatur, Sleman, Kabupaten Sleman, Yogyakarta, 55294)

JFA (Jurnal Fisika dan Aplikasinya)
Vol 13 No 3 (2017): October 2017 Edition

Determination the value of buildings natural frequency of UPT perpustakaan UNS with Accelerometer sensor on an android phone has been done. The main sensor for recording micro tremor activity is Accelerometer sensor on the android phone. Microtremor activity recording is done on every building’s floor of UPT Perpustakaan UNS and on the surface of land outside the building. From micro tremor activity recording, the recorded data is sent to the server by telemetry method. The data were stored on the server then displayed in the graph on the micro tremor web monitoring. Microtremor data is processed with the FFT function to determine the dominant frequency. From the dominant frequency, we find the ratio of resonance of soil and building of UPT Perpustakaan UNS. From the calculation, the value of resonance ratio is 69.35 - 94.48% in the NS component and 70.42-98.61% in the EW component with low resonance status on each floor of the building.