scholarly journals Research and Design of Distributed Fire Alarm System of Indoor Internet of Things Based on LoRa

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Wei Chen ◽  
ChenYu He ◽  
JianRong Lu ◽  
Kui Yan ◽  
Jin Liu ◽  
...  
Keyword(s):  
Monitoring System ◽  
Early Warning ◽  
Signal Strength ◽  
Received Signal Strength ◽  
Area Network ◽  
Alarm System ◽  
Fire Alarm ◽  
Multisensor Data Fusion ◽  
Fire Alarm System ◽  
Remote User

In order to comprehensively improve the sensitivity of fire warning and effectively shorten the warning time, this paper proposes and implements an indoor distributed fire alarm system based on low power wide area network. The system is mainly composed of three parts: a multisensor acquisition node based on LoRa technology, a distributed edge gateway, and a remote user monitoring system. The multisensor collection node obtains environmental parameters such as indoor temperature, smoke concentration, and air quality and then transmits the sensing data to edge gateway by LoRa after preprocessing. The edge gateway is based on an embedded Linux platform and is deployed in distributed state to collect and store data from multiple collection nodes. Besides, edge gateway forwards valid data to the remote user monitoring system by standard MQTT protocol. The user monitoring system displays current deployment area parameters to users in real time and provides early warning prompts based on relevant preset indicators to help the administrator make more accurate decisions on corresponding measures. The system has been deployed and tested in Nanjing Institute of Technology. By sensor calibration experiments, LoRa communication experiments, and system tests in different environments, the experimental results show that the average received signal strength in a small interference space is -104.12 dBm, and the average received signal strength in a noisy signal environment is -57.5 dBm. By setting the optimal transmitting power for each distance, the packet receiving rate can reach more than 95%, and the alarm accuracy can reach 100% under premise of ensuring the lowest power consumption. Finally, this paper conducts a comprehensive performance analysis on the wireless communication performance of environmental collection nodes, multisensor data fusion algorithm, distributed LoRa edge gateway deployment performance, and remote system early warning accuracy.

The Constructing of Integrated Remote Monitoring System for Cold Store

2012 ◽  
Vol 462 ◽  
pp. 313-317
Author(s):  
Meng Ya Zhang ◽  
Qing Ying Zhang ◽  
Zhi Min Chen ◽  
Ying Chi
Keyword(s):  
Monitoring System ◽  
Remote Monitoring ◽  
Cold Chain ◽  
Alarm System ◽  
Fire Alarm ◽  
Remote Monitoring System ◽  
Fire Alarm System ◽  
Cold Store ◽  
Security And Reliability ◽  
Set Up

Being an important node of cold chain logistics, the cold store has to be monitored and managed remotely in real-time, which is very important to operate the whole system effectively. With the help of wireless sensing network and other advanced techniques, a cold store remote monitoring system is set up, which is composed of digital video surveillance system, refrigeration control system and fire alarm system etc. Cold store is then monitored in a long range and managed systemically. The security and reliability of the cold store is guaranteed effectively.

KAJIAN KEKUATAN SINYAL RADIO (RSSI) XBEE DALAM RANGKA PEMASANGAN LANDSLIDE EARLY WARNING SYSTEM (LEWS) DI KABUPATEN GARUT, TASIKMALAYA DAN MAJALENGKA

2019 ◽  
Vol 3 (2) ◽  
pp. 88
Author(s):  
Riski Fitriani
Keyword(s):  
Early Warning ◽  
Early Warning System ◽  
Warning System ◽  
Signal Strength ◽  
Received Signal Strength ◽  
Received Signal Strength Indicator ◽  
Landslide Early Warning ◽  
Point To Point

Salah satu inovasi untuk menanggulangi longsor adalah dengan melakukan pemasangan Landslide Early Warning System (LEWS). Media transmisi data dari LEWS yang dikembangkan menggunakan sinyal radio Xbee. Sehingga sebelum dilakukan pemasangan LEWS, perlu dilakukan kajian kekuatan sinyal tersebut di lokasi yang akan terpasang yaitu Garut, Tasikmalaya, dan Majalengka. Kajian dilakukan menggunakan 2 jenis Xbee yaitu Xbee Pro S2B 2,4 GHz dan Xbee Pro S5 868 MHz. Setelah dilakukan kajian, Xbee 2,4 GHz tidak dapat digunakan di lokasi pengujian Garut dan Majalengka karena jarak modul induk dan anak cukup jauh serta terlalu banyak obstacle. Topologi yang digunakan yaitu topologi pair/point to point, dengan mengukur nilai RSSI menggunakan software XCTU. Semakin kecil nilai Received Signal Strength Indicator (RSSI) dari nilai receive sensitivity Xbee maka kualitas sinyal semakin baik. Pengukuran dilakukan dengan meninggikan antena Xbee dengan beberapa variasi ketinggian untuk mendapatkan kualitas sinyal yang lebih baik. Hasilnya diperoleh beberapa rekomendasi tinggi minimal antena Xbee yang terpasang di tiap lokasi modul anak pada 3 kabupaten.

Development of Novel Fire Alarm Warning System Using Automated Remote Messaging Method

2015 ◽  
Vol 793 ◽  
pp. 578-584
Author(s):  
M.S. Jamri ◽  
Zul Hasrizal Bohari ◽  
M.F. Baharom ◽  
M.H. Jali ◽  
M.N.M. Nasir ◽  
...  
Keyword(s):  
Warning System ◽  
Fire Department ◽  
Smoke Detector ◽  
Alarm System ◽  
Fire Alarm ◽  
Gas Leakage ◽  
Design And Implementation ◽  
Prevention System ◽  
Fire Alarm System ◽  
Building Owner

This paper discussed on design and development of fire warning system using automated remote messaging method. This device enables to alert the owner whenever fire occur that need rapid attention towards the building. This is maybe due to carelessness of user or gas leakage. Fire warning system is an existing project but it will be enhanced. This project discussed the design and implementation of a fire alarm system using the microcontroller which controlled the entire system. This system comprised of smoke detector that linked to PIC and GSM Modem. When smoke detected, the fire alarm will triggered and send a signal to the PIC. The PIC will process the data and transmit the signal to the GSM modem. The GSM modem will send message to alert the building owner. The owner can make further action by informing the nearest fire department. This module is applied for transferring of GSM SMS message to the owner mobile number. The devices can be the early and fast prevention system for building owner.

A Study of Remote Monitoring Fire Alarm System Based on Internet of Things

2014 ◽  
Vol 977 ◽  
pp. 330-333
Author(s):  
Qi Lin Hao ◽  
Ping Xian Yang ◽  
Ming Jie Wang ◽  
Rui Ma
Keyword(s):  
Remote Monitoring ◽  
Data Transmission ◽  
Short Distance ◽  
Alarm System ◽  
Transmission Network ◽  
Wireless Data ◽  
Fire Alarm ◽  
Fire Monitoring ◽  
Wireless Data Transmission ◽  
Fire Alarm System

In this paper, in order to achieve real-time remote monitoring of fire site, we designed a intelligent remote fire monitoring system based on ZigBee network and GPRS network. This system, used ZigBee and sensor to build data acquisition and short distance transmission network and combined with GPRS wireless data transmission and SMS alarm ,cooperates with the server and PC to build a remote monitoring scheme based on GRPS.

Developing Intelligent Fire Alarm System and Need of UAV

2020 ◽  
pp. 403-414
Author(s):  
Girish Joshi ◽  
Bikash Pal ◽  
Iltaf Zafar ◽  
Shruti Bharadwaj ◽  
Susham Biswas
Keyword(s):  
Alarm System ◽  
Fire Alarm ◽  
Fire Alarm System
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