A Reliability-Based Early Warning System for Real-Time Monitoring on RC Buildings

2012 ◽  
Vol 446-449 ◽  
pp. 3422-3427
Author(s):  
Wang Sheng Liu ◽  
Ming Zhao
Keyword(s):  
Real Time ◽  
Early Warning ◽  
Early Warning System ◽  
Warning System ◽  
Real Time Monitoring ◽  
Rc Buildings

A Reliability-Based Early Warning System for Real-Time Monitoring on RC Buildings

2012 ◽  
Vol 446-449 ◽  
pp. 3422-3427
Author(s):  
Wang Sheng Liu ◽  
Ming Zhao
Keyword(s):  
Probability Distribution ◽  
Real Time ◽  
Early Warning ◽  
Early Warning System ◽  
Limit State ◽  
Warning System ◽  
State Function ◽  
Real Time Monitoring ◽  
Rc Buildings ◽  
Load Effect

Today there is an urgent need for effective monitoring whether for old buildings or new ones. While conventional early warning system for real-time monitoring is based on safety factor, this paper proposes a new reliability-based framework to monitor the safety of RC buildings probabilistically. The framework includes modeling resistance, predicting probability distribution of load effect, calculating reliability and setting reliability index threshold. The in-situ test data enables to update the resistance model through a Bayesian process. Meanwhile, the observed monitoring data predicts the probability distribution of load effect. FORM is used to calculate the reliability because the limit state function for real-time monitoring is linear and simple. This study shows that the reliability-based early warning system is of more scientific sense in quantifying the safety and may be applied to many engineering fields.

scholarly journals Perancangan Real Time Monitoring Temperatur Berbasis Mikrokontroler Untuk Sistem Trip Otomatis Motor Listrik 3 (Tiga) Fasa Fibre Cyclone di Pabrik Kelapa Sawit Sungai Bengkal Jambi

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Hanifadinna Hanifadinna
Keyword(s):  
Real Time ◽  
Early Warning ◽  
Early Warning System ◽  
Warning System ◽  
Real Time Monitoring ◽  
Data Logger ◽  
Set Point

Motor listrik merupakan salah satu instrumen yang memegang peranan penting dalam mengendalikan pergerakan mesin-mesin produksi di Pabrik Kelapa Sawit (PKS). Pada PKS Sungai Bengkal Jambi, proses penggantian atau rekondisi sebuah motor listrik dengan daya 60 HP akibat overheat (terbakar) memerlukan waktu lebih dari 1 (satu) bulan. Untuk menanggulangi hal tersebut, dirancang suatu sistem kontrol tertutup yang terdiri dari sensor, indikator, kontroler, dan aktuator. Sistem dibuat dengan menggunakan sensor IC LM35 untuk mendeteksi temperatur bagian dalam motor listrik. Informasi temperatur dari sensor tersebut diterima dan diolah oleh mikrokontroler yang diprogram untuk merespon perubahan temperatur dan memberikan feedback dengan melakukan trip pada motor listrik saat temperatur operasi melebihi set point yang telah ditentukan. Setelah loop selesai, sistem akan mengaktifkan kembali motor listrik saat temperatur operasi sudah kembali normal. Feedback yang diberikan juga digunakan sebagai sistem peringatan dini (early warning system dengan menambahkan lampu indikator dan sirine pada sistem. Selain itu, mikrokontroler diprogram untuk mengkonversi perubahan temperatur dari sensor untuk diolah menjadi keluaran data digital. Semua data tersimpan dalam data logger (perekam data) dan ditampilkan secara langsung pada sevent segment display. Untuk menguji akurasi sistem, telah dilakukan pengambilan data temperatur sebanyak 30 kali melalui data logger. dan didapatkan nilai standar deviasi sebesar 0,77% dengan rentang sebesar 0,71 °C. Perbedaan hasil pengukuran jika dibandingkan dengan Termolaser adalah sebesar 0,013%.

A Real-time monitoring and early warning system for landslides in Southwest China

2015 ◽  
Vol 12 (5) ◽  
pp. 1219-1228 ◽  
Author(s):  
Neng-pan Ju ◽  
Jian Huang ◽  
Run-qiu Huang ◽  
Chao-yang He ◽  
Yan-rong Li
Keyword(s):  
Real Time ◽  
Early Warning ◽  
Early Warning System ◽  
Southwest China ◽  
Warning System ◽  
Real Time Monitoring ◽  
Monitoring And Early Warning

scholarly journals Design of Early Warning System Based on Wireless Sensor Network

2018 ◽  
Vol 14 (01) ◽  
pp. 66
Author(s):  
Gan Bo ◽  
Jin Shan
Keyword(s):  
Data Acquisition ◽  
Real Time ◽  
Monitoring System ◽  
Early Warning ◽  
Early Warning System ◽  
Warning System ◽  
Sensor Data ◽  
Landslide Monitoring ◽  
Remote Transmission ◽  
Sensor Data Acquisition

In order to solve the shortcomings of the landslide monitoring technology method, a set of landslides monitoring and early warning system is designed. It can achieve real-time sensor data acquisition, remote transmission and query display. In addition, aiming at the harsh environment of landslide monitoring and the performance requirements of the monitoring system, an improved minimum hop routing protocol is proposed. It can reduce network energy consumption, enhance network robustness, and improve node layout and networking flexibility. In order to realize the remote transmission of data, GPRS wireless communication is used to transmit monitoring data. Combined with remote monitoring center, real-time data display, query, preservation and landslide warning and prediction are realized. The results show that the sensor data acquisition system is accurate, the system is stable, and the node network is flexible. Therefore, the monitoring system has a good use value.

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