Transcript of "Monitoring and alarming system based on zigbee technology"
MONITORING AND ALARMING SYSTEM BASED ON ZIGBEE
We live in a very insecure world, dominated by robbery and crime. Due to the
pronounced differences between the classes of society, cultural conflicts and various other
factors, worldwide crime rates have known an exacerbated increase in the last decades, rendering
modern society a very unstable and unsafe environment. Every day we hear about all sorts of
crimes, robberies and thefts, making us doubt the safety of our homes, possessions and even our
lives! People are feeling more and more insecure inside their homes these days and they
reinforce their doors and windows, install extra door locks, and even buy guard dogs to provide
them protection. However, it is very important to note that experienced robbers can easily break
through to a wide range of home defenses, the previously mentioned precautions only providing
a false sense of security. In addition, recently conducted research has revealed that most
burglaries and robberies take place while the owners are at home, exposing the home owners and
their families to a serious risk!
In present, the only effective means to protect your home against robbers is to install a
reliable home security system.
The traditional monitoring and alarming nets are based on sundry wired net technologies
such as field bus, CAN bus and RS422. The security state data from smoking sensors, infrared
sensors and panic buttons will be detected and transferred to monitoring center. The existing
equipments on the basis of wired nets are automatic wired itinerant monitoring nets, in which the
data from detecting nodes are linked to all the transmitting modules via wires. In such a signal
transmitting plan, the long transmission lines will generate high cost, long project time and
difficult repair work. So we are in need of an effective system.
In the proposed system WSN are present. The wireless sensor network (WSN) based on
Zigbee technology is developed to solve the defects of existing monitoring and alarming system.
In the wireless system, all the data will be transmit in wireless method. Since the real-time
measuring data could be transmit to monitoring center via wireless network and GPRS network,
the operation staff will only sit in the office to check up the system running state.
Here we have three sensors to detect the abnormality of the system. That will be
transmitted through zigbee to the other end to display it and also to upload it in the GPRS. Panic
button is also placed to intimate the need of emergency help, which has the highest priority. IR
key control is used to make the controller to detect the presence of intruder in the night time.
The sensor values are transmitted from the transmitting section through Zigbee. In the
receiver end, these values are received by the controller and up dated in the internet through
GPRS. The Abnormalities will be alerted through the internet.
PIC 16F877A, 8051 microcontroller unit.
Temperature sensor, Gas sensor
Keil C Compiler
CCS or MP Lab compiler.
Easy to implement
Effectively method that provide monitoring and alerting through GPRS.
PIC 16F877A, 8051 Microcontroller unit
Zigbee, GSM modem
IR transmitter, Receiver
Temperature, Gas sensor.
Keil C Compiler
MP Lab or CCS Compiler