Safety is the most vital part of any type of industry. In any hazardous work environment plants, safety of human life is an important concern, Negligence in safety part may cause damaging of high quality equipment hampering of production or may cause loss of human life also in extreme cases. In the atmosphere industry safety and security is a fundamental aspect of all. To avoid any types of unwanted phenomena all atmosphere industry follows some basic precaution and phenomena.
2. HARDWARE DESIGN SCHEME
A. Hardware Implementation
Hardware implementation deals in drawing the schematic on the plane paper according to the application, testing the schematic design over the breadboard using the various IC’s to find if the design meets the objective, carrying out the PCB layout of the schematic tested on breadboard, finally preparing the board and testing the designed hardware. The above Hardware implementation in this we are using LPC2148 micro controller this is ARM7TDMI microcontroller.
C. Power Supply
The input to the circuit is applied from the regulated power supply. The a.c. input i.e., 230V from the mains supply is step down by the transformer to 12V and is fed to a rectifier. The output obtained from the rectifier is a pulsating d.c voltage. So in order to get a pure d.c voltage, the output voltage from the rectifier is fed to a filter to remove any a.c components present even after rectification. Now, this voltage is given to a voltage regulator to obtain a pure constant dc voltage.
D. ARM Processor
ARM is the industry’s leading provider of 32 bit embedded microprocessors. Offering a wide range of processors based on a common architecture that deliver high performance, industry leading power efficiency and reduced system cost. ARM is a 32-bit RISC instruction set architecture developed by ARM Holdings. It was named the Advanced RISC Machine and before that, the Acorn RISC Machine. The ARM architecture is the most widely used 32– bit instruction set architecture in numbers produced. Originally conceived by Acorn Computers for use in its personal computers, the first ARM-based products were the Acorn Archimedes range introduced in 1987.
WIZNET3150 is a gateway module that converts RS- 232 protocol into TCP/IP protocol. It enables remote gauging, managing and control of a device through the network based on Ethernet and TCP/IP by connecting to the existing equipment with RS-232 serial interface. WIZ110SR is a protocol converter that transmits the data sent by serial equipment as TCP/IP data type and converts back the TCP/IP data received through the network into serial data to transmit back to the equipment. When the data is received from serial port, it is sent to W5100 by MCU. If any data is transmitted from Ethernet, it is received in the internal buffer, and sent to the serial port by MCU
3. SOFTWARE DESIGN SCHEME
In order to protocol conversion of gateway, This paper presents the following solutions Establish address at the application layer, ZigBee and Ethernet Addresses to the address mapping of application layer to provide a basis for data transfer Unified the format of data transmission, which is a good solution to the data conversion issues, Build a frame by bytes transmitted in the application layer.
4. RESULT AND DISCUSSIONS
Assemble the circuit on the PCB .After assembling the circuit on the PCB, check it for proper connections before switching on the power supply. This paper consists of controller, and ZIGBEE all the units are working independently and in collaboration with each other as well In total complete system (including all the hardware components and software routines) is working as per initial specifications and requirements of our paper. Because of creative nature of the design, some features could not be fine tuned and are not working properly.
5. CONCLUSION AND FUTURE SCOPE
In this paper we have designed a prototype of an embedded wireless sensor network based on LPC 2148 microcontroller and XBEE [zigbee protocol] for connectivity, The temperature, fire, fluid level were considered as essential for monitoring of atmosphere at nuclear power plant any changes in the atmosphere the sensors are capturing the levels of temperature ,fire, fluid. then this information passes through zigbee to Ethernet connected to the web server in the computer