DESIGNING THE REMOTE CONTROLLING OF THE TOWN GAS CONSUMPTION SYSTEM

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1 DESIGNING THE REMOTE CONTROLLING OF THE TOWN GAS CONSUMPTION SYSTEM Akbar Alidadi Shamsabadi¹*, Afshin Raeisi Dehkordi², Shahab Taghipour² ¹ Young researchers club and elites, Islamic Azad University, Shahrekord branch, Shahrekord, Iran ² Islamic Azad University, Shahrekord branch, Shahrekord, Iran. * (Corresponding author; -alidadi_ss@yahoo.com) ABSTRACT This research aimed to design a remote-managing system installable on gas-burner heating apparatus by which the users can control the temperature with SMS. They can inform of the present temperature and announce their favorite temperature to the system. It can distinguish the dangerous conditions and prevent from occurring events by informing the users. Nowadays, in the field of developing the notion of intelligent houses and making it more practical, remote-controlling the house apparatus is of great importance. KEY WORDS: Energy management, GSM Module, Remote controlling, Town gas. INTRODUCTION The issue of energy management has always been one of human s worries (minimizing the daily energy cost without affecting the comfort) (Missaoui et al., S. 2014). Apparently, it plays an important role in heating the buildings including homes and organizations. Because of indifference, forget, boredom and absence of somebody in a place, we have always faced with Energy losses and, even, Adverse conditions of temperature and dangers. Therefore, lack of a system for managing and supervising energy, especially natural gas, and increasing the confidence coefficient is crystal clear. Designing the system and its main parts The system block diagram is seen in the picture below. The system parts are as following. (Figure 1) Figure 1. The system block diagram The module for sending and receiving the SMS including SIEMENS GSM Module-TC35i (Wu et al., 2012). It is based on GSM having the possibility of the base sonic relationship and exchanging the data for applications with low price of sending and receiving. Dimensionally, it is compact and consumes low energy. Because of being wireless, its small dimensions and flexibility make the usage in machine to machine applications (M2M) easy. (Figure 2) Figure 2- TC35i SIEMENS GSM Module Volume- 1 Issue-1 (2014) ISSN: X (Print); (Online) 2014 DAMA International. All rights reserved 8

2 Another characteristic of TC35i is shown in table 1. As it was indicated, through mediate serial (serial interface) and using the AT Commands, we can exchange the data with TC35i and control it. Table 1- Characteristics of TC35i Hayes Communications in his production in 1977, Smart modem (Park, 2003) Invented a method which was used in basis of sending the information in modem without any change for controlling it. In return, the modem itself had the ability to switch between two states of transferring the data and imperative. To do so, some commands were used named "Hayes command set" (2009). These commands include a set of short text combining with each other make a complete command for operations including number dialing, interrupting and changing the communication variables. Since these commands are started with AT, they also are named AT Commands (Gerigan and Ogrutan, 2011). Controlling circuit To control the system, the microcontroller of ATMEGA32, of AVR family, is used. In addition, a 4 4 keyboard along with a small LCD monitor is added to this part in order that the users can control the system from near too. (Figure 3) Having a 32kb internal flash memory, 8 canals converting Analog to digital, a mediate serial, internal timer and 4 eight-legged ports, ATMEGA32 obviates our needs of programming, communicating with TC35i module, receiving the sensors information, linking and controlling the adjusting valve of gas, keyboard and the monitor well. Gas heaters It is a usual standard Gas heater which is controlled by micro. Sensors Including the temperature sensor (LM335), Carbon monoxide sensor (MQ-7) and city gas sensor (MQ-5). LM335 is an accurate sensor for temperature which is adjusted easily. Its function is like a Zener Diode whose break voltage 10mV/ k has a direct relationship with temperature and an equivalent mechanical resistance less than 1 Ω, as well as it operates in current range from 450 μa to 5 ma without any changes in its features. Making it accurate in Volume- 1 Issue-1 (2014) ISSN: X (Print); (Online) 2014 DAMA International. All rights reserved 9

3 +25 0 C, it has an error less than 1 0 C in a thermal range of C and a linear outlet. (Figure 4). MQ-7 is very sensitive to Carbon dioxide and used for detecting this gas in houses, industry and vehicles. MQ-5 is sensitive to LPG, natural and town gas and used for detecting the gas leakage in indoor and industrial. Figure 3- Controlling circuit Figure 4- The temperature sensor (LM335) Volume- 1 Issue-1 (2014) ISSN: X (Print); (Online) 2014 DAMA International. All rights reserved 10

4 In Figure 5, its structure and how to use are shown. Figure 6 indicates the diagrams of their sensitivity to different gas. Figure 5- Structure and how to use MQ-5 and MQ-7 Figure 6- Sensors sensitivity to different gas Description of the system function When the controlling system installed on the gas heater is prepared and operated, the system is ready to do the users commands. Relationship between micro and module (GSM) is made by the Interface serial. Using the AT commands, micro controls the module and expresses its requests in the form of these commands.when the contact between users and Gas heater is made, at first the users identity is examined. Then, the users can ask about their situation. Accordingly, the controlling system sends some information such as the environment temperature, etc. for Volume- 1 Issue-1 (2014) ISSN: X (Print); (Online) 2014 DAMA International. All rights reserved 11

5 users. As a result, users can declare their favorite temperature in order that the system attempts to reach to a favorite temperature through turning the Gas heater on or off and controlling the gas flow. Using sensors of temperature, Carbon dioxide and town gas, the room temperature and density of the Carbon dioxide and town gas are always examined in order to prevent from dangers for the residents. CONCLUSION According to the studies, the annual thermal consumption of an Iranian family is more than 60% (consumption in cold seasons) and 40% is allocated to the base consumptions (cooking and heating water) so that about 13% of the indoor total consumptions is allocated to cooking and 27% to heating water. The average of gas consumptions in cooking, heating water and homes in Iran is 10.6, 27.2 and 62.2 respectively. Since the final capacity of production, transfer and distribution of the natural gas should provide gas in peak consumption conditions and, nowadays, at least 50% of the consumed gas in peak consumption condition is allocated to the indoor part as well construction and developing the gas-piping systems need remarkable costs, presenting appropriate solutions for optimizing the natural gas consumption is of great importance. To optimize the families thermal consumptions, different solutions can be presented including increasing the yield of thermal devices, promoting the energy group and using modern technologies in producing thermal devices. Because the families thermal consumptions is very depended to the environment temperature degree, accurate adjusting, managing and controlling this temperature can economize the main part of the families thermal consumptions which is 60% of their annual consumptions. If an electronic, completely automatic and programmed controlling system of the environment temperature adjusts the temperature accurately, the excessive increasing of the environment temperature because of neglect and human mistakes will reach to zero and prevent from wasting the fuel energy and natural gas remarkably. In one hand, determining the temperature when the users sleep or are not at home (using the system of entering the favorite temperature via Keypad), reporting and determining the temperature by cell phone network and preventing from energy waste will be always possible. REFERENCES Gerigan C. and Ogrutan P. (2011). AT Commands in Project Based Learning. Bull. Transilvania Univ. Braşov. Series I: Engineering Sci. 4(2): Hayes command set (2009). Wikipedia, the free encyclopedia. Url: Park J. (2003). Modems and multiplexers. Practical Data Communications for Instrumentation and Control. Chapter 7: Missaoui R., Joumaa, H., Ploix, S. and Bacha, S. (2014). Managing energy Smart Homes according to energy prices: Analysis of a Building Energy Management System. Energy Buildings. 71: Wu T., Wu T., Yang R., Wang Y. and Hou C. (2012). Data Acquisition and Transmission System Based on Short Message Service. Int. Conference Solid State Devices Materials Sci. April 1-2, Macao. Volume- 1 Issue-1 (2014) ISSN: X (Print); (Online) 2014 DAMA International. All rights reserved 12