NOW a days, safety & time are major issues .we deal with this issues in our project. We all know the gas booking is time consuming task and also there can be problem of gas leakage . Most of the accident occur because of gas leakage. In these project we can identify the gas leakage, controlling it and also without any human interface gas booking is done. By using this system the security services like police and fire brigade of a nearby region also be informed about the intrusion instantly and they can take required steps rapidly. And hence the system is safe & cost effective. The aim of this project is to develop a system that will provide remote monitoring of sensors and also provide security against hazardous condition. This paper is mainly concerned with the automatic intimation of parameters or sensors condition to user via GSM. It is meant to save the electric power and human energy. This project is made with the help of the 89c51 microcontroller. The GSM modem is connected to the microcontroller and the sensor is connected using wireless network.
Home security has changed a great deal over the last century and will continue to do so as long as technology continues to progress. In today’s age of digital technology and intelligent systems, home automation has become one of the fastest developing application-based technologies in the world. Security systems are important features of a modern Home. In order to fullfil the security concerns of the house owners, efficient, reliable & cost effective system has been designed.
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The research is aimed at developing the security of Home against LPG gas leakage or Fire. In your absence,if the above incident happen, the device send message corresponding number. A wireless sensor network (WSN) is a wireless network consisting of spatially distributed autonomous devices using sensors to monitor physical or environmental conditions. A WSN system incorporates a gateway that provides wireless connectivity back to the wired world and distributed nodes (see in fig).
The work deals with discussion about various brilliant home automation systems and technologies. In home automation the monitoring and control operations are assisting through smart devices installed in residential buildings. Home automation systems face some main challenges; these are high cost of ownership, inflexibility, difficulty in achieving security and poor manageability. The main intention of this research is to design and implement a home automation system using IoT that is able to controlling and automating most of the house appliances through an easy possible web interface.
By using Wi-Fi technology to interconnect its distributed sensors to home automation server the Proposed system has a great flexibility. This will decrease the deployment cost and will increase the ability of upgrading, and system reconfiguration.
2.1 RELATED WORK
Wireless Sensor Network (WSN) comprises both instrumentation as well as communication technologies and operates within Industrial, Scientific and Medical (ISM) band. the Wireless Sensor Networks collaboratively operate to collect and disseminate data with great security and reliability. Therefore, it plays vital role in measurement and control of environmental parameters of industrial and agriculture sectors as well. It deserves key role not only in biomedical field but also in military and security fields. The Wireless Sensor Network (WSN) system consist of devices, which sense the signal, process and transmit the signal to base station. The base station plays the jobs of not only as data logger but also of data analysis and prediction. Each of these devices is known as sensor node , that comprises a sensor or array of sensors, Data Acquisition System (DAS), processor, RF module and power supply unit. Moreover, the smart moves are also associated with the Global Positioning System (GPS) , to indicate their location in the monitored area. The movable robotic system can also provide with every smart move to vary its location and to collect data from different place.
Wireless Sensor Network is the network of devices called as wireless sensor nodes, routed cooperatively to exchange information, through wireless link. The Wireless Sensor Networks consist three types of nodes as coordinator; which organize the network and helps to maintain routing tables. Routers; routers communicate with coordinator and other routers to reduce functions of end devices and provides path for end devices to communicate data to the base station or coordinator. End Device; End devices ensures the interfaces to the physical world. It senses the parameters for which it has been designed and communicates with coordinator through desired routing protocol and forward signal to the base station.The communication protocols are more complex and designed according to suitable criteria. Following are the characteristics of Wireless Sensor Network.
ï‚· Low power consumption.
ï‚· Ability to withstand in harsh environmental conditions.
ï‚· Self configurability
ï‚· Self healing
Availability of different OS can be configured in real time operating system.
On literature survey, it is found that, the study of wireless sensor network is the field of interest and therefore, the researchers are undertaking the research work related to the Wireless Sensor Network(WSN). Wireless Sensor Network (WSN)  is fast growing field of electronics for research of applied nature. The Santosh Kumar et al developed sensor network for dying industry monitoring and control system, which is wired about PIC 16F877 and deployed to monitor various parameters. The recent release of standards in the field such as IEEE 802.15.4 and Digi brought the technology out of research labs and empowered to deploy for real world applications . Corke et al have developed an electronic system for applications like cattle monitoring, ground water monitoring, rainforest monitoring . Chiara buratti, worked on Wireless Sensor Network (WSN) technology and its evolution . In order to monitor the concentration of hydrocarbons particularly, in chemical industries a Wireless Sensor Network (WSN) based system is developed by Kane et al  and interpreted the results, which could support the optimization of production. Zigbee based mine safety monitoring system is developed by Rajkumar Boodu .
This paper presents the designing of Wireless Sensor Node designed to detect and monitor the leakage of the industrial gases. For this purpose the system is wired about PIC 18F4550 microcontroller, which has promising salient features. After comparison of various RF modules, the Zigbee module is selected and employed to transreceive the data. Zigbee technology is new technology in RF communication, which work with low power and in free Industrial, Scientific and Medical (ISM) band.
The main applications of a LPG Gas Leakage Detector would be :
ï‚· To protect ourselves from any gas leakage in cars, industries, homes, hospitals etc.
ï‚· To safeguard ourselves from gas leakage in heating gas fired appliances like boilers, domestic water heaters.
ï‚· To be used in large industries which use gas as their production.
ï‚· To provide safety from gas leakage in cooking gas fired appliances like ovens, stoves etc.
GSM module is used to send a message .The name of GSM module SIM_300 with RS232.Buzzer, power supply and audio interface are used. This can be connected to PC by using a USB to Serial Adaptor. Real terms are used to send & receive data.
The interface between microcontroller and GSM module can also be done directly with the help of wires.
With the help of step down transformer of 230V AC primary to 0-12V, 500mA secondary power supply is taken from main supply. Full-wave rectifier and a capacitor filter provide the output voltage and then fed to 5-volt regulator (LM7805) whose output is used as power supply for IC’s and microcontroller.
The LPC2141/2/4/6/8 microcontrollers are based on a 32/16 bit ARM7TDMI-S CPU with real-time emulation and embedded trace support, that combines the microcontroller with embedded high speed flash memory ranging from 32 kB to 512 kB. A 128-bit wide memory interface and a unique accelerator architecture enable 32-bit code execution at the maximum clock rate. For critical code size applications, the alternative 16-bit Thumb mode reduces code by more than 30 % with minimal performance penalty.
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Due to their tiny size and low power consumption, LPC2141/2/4/6/8 are ideal for applications where miniaturization is a key requirement, such as access control and point-of-sale. A blend of serial communications interfaces ranging from a USB 2.0 Full Speed device, multiple UARTs, SPI, SSP to I2Cs, and on-chip SRAM of 8 kB up to 40 kB, make these devices very well suited for communication gateways and protocol converters, soft modems, voice recognition and low end imaging, providing both large buffer size and high processing power. Various 32-bit timers, single or dual 10-bit ADC(s),10-bit DAC, PWM channels and 45 fast GPIO lines with up to nine edge or level sensitive external interrupt pins make these microcontrollers particularly suitable for industrial control and medical systems.
The system detects the LPG gas concentration in the air if it exceeds a safety level and then responds by using GSM to send an SMS to the consumer. The LED and Buzzer are activated to alert the consumer in case of gas leakage and the system displays the message on LCD
LPG Gas Leakage is a major problem in many industries and households.Hence our Project will definitely prove to be for households and industries in preventing future gas leakages.
This research work has many advantages which are as follows:
ï‚· The Research Work is easy to use and it gives remote indication to the user.
ï‚· The Sensor used in this Research Work has excellent sensitivity combined with a quick fast response time.
ï‚· The system is highly reliable, tamper-proof and secure.
ï‚· In the long run the maintenance cost is very less when compared to the present systems.
ï‚· It is possible to get instantaneous results and with high accuracy.
This home security feature is expected to draw much attention in the next decades. People are getting more and more concerned about how to protect themselves and their houses in case of emergencies. These emergencies include not only LPG gas leakage, but also fire attack.
This device provides a means for being able to securely monitor a house with the help of sensors integrated with a micro-controller and a GSM unit. SMS provides an economical and convenient way to alert users of a possible fire accident.
The use of mobile handsets as a client device to receive warning messages implies that the user need not have to carry an additional piece of equipment as most people already have a mobile phone with them most of the time.
 “Analog and digital circuits for electronic control systems applications” by jerry luecke – ELSEVIER publications – 2005 – ISBN 0-7506-7810-0.
 “Advanced microelectronics Microcontrollers in Practice”By I. Susnea and M. Mitescu – Springer Berlin Heidelberg New York – ISBN-10 3-540-25301-7.
 “Advanced PIC Microcontroller Projects in C ” by s Dogan Ibrahim – ELSEVIER publications – 2005 ISBN-13: 978-0-7506-8611-2.
 “PIC Microcontrollers An Introduction to Microelectronics” by Martin Bates -Second Edition- sELSEVIER publications – 2004 – ISBN 0 7506 6267 0 .
1.Ms.Pawar Pallavi Tatyasaheb,Student IV SEM, M.E, VLSI AND EMBEDDED SYSTEM, SCOE, Pune, India Mr. B.E. Shinde,Assistant Professor, Department of Electronics and telecommunication, SCOE, Pune, India “SMART HOME APPLIENCES USING IOT” Vol-2 Issue-1 2016. SCOE, Sudumbare, M.E (VLSI & Embedded Systems)(2015-20
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