scholarly journals Research on Harmful Gas Detection and Alarm System Based on ZigBee Technology

2021 ◽  
Vol 1972 (1) ◽  
pp. 012057
Author(s):  
Hong Li ◽  
Furong Chen
2013 ◽  
Vol 427-429 ◽  
pp. 1254-1257
Author(s):  
Kuan Gang Fan ◽  
Xin Zhang ◽  
Qing Mei Cao ◽  
Ying Fei Sheng ◽  
Le Ping Zheng

Gas detection alarm system plays a more and more important role in People's Daily life and every field. This paper proposes semiconductor gas sensors and SCM as the core, which could achieves the gas concentration monitoring and alarm functions. The gas monitoring system includes host computer that consists of LabVIEW operating interface and slave computer that constructed with AT89C51 microcomputer and MQ-2 gas sensor.It achieves remote monitoring and controlling housing environment in real-time and has a certain practical value in society.


2013 ◽  
Vol 448-453 ◽  
pp. 3662-3665
Author(s):  
Bo Chen ◽  
Ze Hu ◽  
Liang Ge ◽  
Jun Lan Li

In order to transmit temperature and smoke signals timely and accurately in the fire alarm system of community, design one kind of wireless fire detection and alarm system, which is based on the wireless communication technology, ZigBee. When acquisition module receive the signals which come from the wireless data acquisition module which connected the room with temperature detection module, and then, send to the nearest backbone transceiver module, the defined center module receive the signals, at last, the signals are local-stored or transferred to fire center by GPRS. This design with the characters of low price, high efficiency and reliable, has a certain market.


2011 ◽  
Author(s):  
Qiang Yin ◽  
Haiyang Yu ◽  
Xingling Shao ◽  
Zhengyan Wang ◽  
Wei Yang ◽  
...  

2018 ◽  
Vol 14 (05) ◽  
pp. 211
Author(s):  
Yuping Gao

To improve the intelligent management of the library, on the basis of manual and information management, new technologies were combined to design RFID wireless network with WSN consisting of nodes. Three modules of literature search positioning system, book whole frame system and automatic borrowing and returning door guard alarm system were mainly explored. The intelligent library system based on WSN and RFID used advanced RFID and ZigBee technology for the optimization and integration of literature resources, service process and management mode of the library. The library automation and intelligent interaction were realized and the concept of people-oriented was given full play to the maximum. The results showed that the intelligent library system based on WSN and RFID could basically realize the intelligent library management. To sum up, the system creates a random library service and management system at anytime and anywhere.


2013 ◽  
Vol 475-476 ◽  
pp. 209-213
Author(s):  
Hong Fang ◽  
Lin Cai Deng

This paper describes a embedded system,using ARM processor LPC2148 as the core of hardware,and using MQ series gas sensor as the detection component,and using ENC28J60 as the network communication interface,and using uc / OS-II real-time operating system as software platform for the real-time remote monitoring of density of harmful gases indoor.In this system,voltage signals from MQ sensor will be processed by the ARM micro-controller and be displayed in the LCD.Then they will be compared with the set voltage value.If they are greater than the set value,sound and light alarm will be touched off,and data will be transfered to the network through the ARM ENC28J6 network interface.Above all,the system is able to achieve accurate detection, alarm and remote monitoring indoor dangerous gases.


2011 ◽  
Vol 187 ◽  
pp. 377-382
Author(s):  
Si Long Wu ◽  
Xiao Na Xu ◽  
En Cheng

The paper put forward a detail design of the out-of-position alarm system based on ZigBee technology and communication chip CC2430 to protect valuables from leaving safe position. It introduced the hardware and software design of the system, implemented short-range wireless communication, established the functional relationship between received signal strength indication (RSSI) and wireless communication distance, solved the problem of multipath fading by software method. Then it presented a series of experiments to prove the system can steadily communicate information to meet security requirement.


Author(s):  
Qingzhu Wang ◽  
Rongchang Liu ◽  
Yuquan Ma ◽  
Jinchuan Zhao ◽  
Lizhen Feng ◽  
...  

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