Wireless Motor Controller Over Bluetooth Network

Transcript

IPASJ International Journal of Computer Science (IIJCS) Web Site: http://www.ipasj.org/IIJCS/IIJCS.htm Email: [email protected] ISSN 2321-5992 A Publisher for Research Motivation ........ Volume 2, Issue 10, October 2014 Wireless Motor Controller over Bluetooth Network Sufyan Ahamed Khan1, Shaik. Mahaboob Basha2 1 Post Graduate Student Department of Electronics and Communications Engineering Priyadarshini College of Engineering & Technology Nellore, Andhra Pradesh, India. 2 Head of the Department Department of Electronics and Communications Engineering Priyadarshini College of Engineering & Technology Nellore, Andhra Pradesh, India. ABSTRACT Wireless communication is a type of data communication that connects two or more devices and need not require human involvement in the communication process. Communication can be carrying on different networks such as Bluetooth. In this communication, the network is meant for transport. There is a large requirement to this technology. It offers a number of challenges and opportunities. The devices differ from mobile devices such as vehicles to stable meter reading appliances. The application we developed is motor controller. We can control the motor either manually using a smart phone or through machine and also through Internet. Keywords: Wireless Machine Communications, ARM Microcontroller, Bluetooth 1. INTRODUCTION The concept of Wireless communications is to create interactions between two machines directly or through Internet. We have two modes of objectives. One is to communicate physical devices such as motors sensors and gaming consoles with each other wirelessly. The second one is to control these devices using internet .We present the M2M communications consisting of wireless infrastructure. Related technologies toward practical implementation are given to have fundamental understanding and engineering knowledge of this new technology. As the usage of Internet and mobile communications rapidly increased, Internet of Things and cyber technologies came into existence to combine information communication technology with our daily life. By using great amount of machines that are typically wireless devices, such as sensors, we expect to advance human being’s life in a significant way. In particular, autonomous communications among machines of wireless communication capability creates a new frontier of wireless communications and network. In this paper, we will throw light on opportunities toward achieving machine to machine wireless communication ultimately serving human beings [7]. M2M communication can be carried over mobile networks such as GSM, GPRS and Bluetooth. In this communication, the role of mobile network is a transport network. With a requirement of more than 50 million connected devices, M2M offers unique challenges and opportunities. These devices differ from mobile vehicles to immobile meter-reading appliances that send small amounts of data. The application we developed is motor controller. We can control the motor either manually or through machine and also through internet [1]. 2. REVIEW OF EXISTING TECHNIQUES A spray cooling system for the sidewalls of a furnace is required to reduce the amount of coolant needed relative to a pressurized furnace cooling [4]. In this process spray headers and pipes supply coolant to spray nozzles associated within a coolant space in a roof structure to spray coolant against the working plates of the roof [2]. The spray pipes and headers also consists a part of the framework of the roof, resulting in a simple, lightweight and one-piece structure [3, 5, 6]. A pump is attached to evacuate the coolant from the coolant space, and thermocouples are attached in the working plates to watch the temperature and operate controls to adjust the rate of flow so that only the amount of coolant necessary to maintain a desired temperature is supplied to the sidewalls [8]. Volume 2 Issue 10 October 2014 Page 1 IPASJ International Journal of Computer Science (IIJCS) A Publisher for Research Motivation ........ Volume 2, Issue 10, October 2014 Web Site: http://www.ipasj.org/IIJCS/IIJCS.htm Email: [email protected] ISSN 2321-5992 Figure 1 Air-cooled-vacuum-furnace-cooling-systems 3. PROPOSED TECHNIQUE As the existing technique has wired connections, we proposed a wireless technique which consists of Bluetooth device for communication. The proposed technique has two modes. In the first mode, Transmitter machine will control the motor. The second one is, user can handle the motor with a smart phone or any other PDA. We use Bluetooth SPP to control the motor through our smart phone. The Bluetooth SPP is a software for the Bluetooth client communication tools i.e., Bluetooth which is in slave mode. Bluetooth serial communication can be tested; also it can connect Bluetooth Multipoint Control Unit (MCU) and PC serial port. 3.1 Block Diagram The Fig.2 illustrates the block diagram of our proposed system. It consists of one transmitter and one receiver with inbuilt components. Transmitter Receiver Figure 2 Block Diagram of the proposed technique The Transmitter is having master role. It has three components namely temperature sensor, ARM Board and Bluetooth Modem. The receiver is having slave role. It has four components namely DC Motor, ARM Board, LCD and Bluetooth Modem. 3.2 ARM MICRO CONTROLLER The LPC2146 microcontrollers are based on a 32 or 16 bit ARM 7 TDMI - S CPU with real-time emulation and embedded trace support[9], that combines the microcontroller with high speed flash memory ranging from 32 kB to 512 kB. A 128-bit wide memory interface and 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. Due to their tiny size and low power consumption, LPC2141/2/4/6/8 is 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 [1, 13], 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 Volume 2 Issue 10 October 2014 Page 2 IPASJ International Journal of Computer Science (IIJCS) A Publisher for Research Motivation ........ Volume 2, Issue 10, October 2014 Web Site: http://www.ipasj.org/IIJCS/IIJCS.htm Email: [email protected] ISSN 2321-5992 control and medical systems[9]. Figure 3 ARM PCB 3.3 Bluetooth Module – HC05 HC-05 module is an easy to use Bluetooth SPP (Serial Port Protocol) module, designed for transparent wireless serial connection setup. Serial port Bluetooth module is fully qualified Bluetooth V2.0+EDR (Enhanced Data Rate) 3Mbps [14]. Modulation with complete 2.4GHz radio transceiver and baseband is considered. It uses CSR Blue core 04External single chip Bluetooth system with CMOS technology and with AFH (Adaptive Frequency Hopping Feature). It has the footprint as small as 12.7mmx27mm. Hope it will simplify your overall design/development cycle [12]. Hardware features: Typical: -80dBm sensitivity, Transmit power: Up to +4dBm RF, Low Power: 1.8V Operation: 1.8 to 3.6V, I/O: PIO control, UART interface with programmable baud rate, with integrated antenna and edge connector. Software features: Default Baud rate: 38400, Data bits: 8, Stop bit: 1, Parity: No parity, Data control: has Supported, baud rate: 9600, 19200, 38400, 230400, 460800. . Figure 4 Bluetooth Module – HC05 Given a rising pulse in PIO0, device will be disconnected, Status instruction port PIO1: low-disconnected, highconnected; PIO10 and PIO11 can be connected to red and blue led separately. When master and slave are paired, red and blue led blinks 1time/2s in interval, while disconnected only blue led blinks 2times/s. Auto connect to the last device on power as default. Permit pairing device to connect as default. 3.4 DC Motor A DC motor relies on the fact that like magnet poles repels and unlike magnetic poles attracts each other. A coil of wire with a current running through it generates an electromagnetic field aligned with the centre of the coil. By switching the current on or off in a coil its magnetic field can be switched on or off or by switching the direction of the current in the coil the direction of the generated magnetic field can be switched 180°[10]. A simple DC motor typically has a stationary set of magnets in the stator and an armature with a series of two or more windings of wire wrapped in insulated stack slots around iron pole pieces with the ends of the wires terminating on a commutator. The armature includes the mounting bearings that keep it in the centre of the motor and the power shaft of the motor and the commutator connections. The winding in the armature continues to loop all the way around the armature and uses either single or parallel conductor’s wires, and can circle several times around the stack teeth. The total amount of current sent to the coil, the coil's size and what it's wrapped around dictate the strength of the electromagnetic field Volume 2 Issue 10 October 2014 Page 3 IPASJ International Journal of Computer Science (IIJCS) A Publisher for Research Motivation ........ Volume 2, Issue 10, October 2014 Web Site: http://www.ipasj.org/IIJCS/IIJCS.htm Email: [email protected] ISSN 2321-5992 created. The sequence of turning a particular coil on or off dictates what direction the effective electromagnetic fields are pointed. By turning on and off coils in sequence a rotating magnetic field can be created. These rotating magnetic fields interact with the magnetic fields of the magnets in the stationary part of the motor (stator) to create a force on the armature which causes it to rotate. In some DC motor designs the stator fields use electromagnets to create their magnetic fields which allow greater control over the motor. The current in the coil is typically supplied via two brushes that make moving contact with the commutator. Now, some brushless DC motors have electronics that switch the DC current to each coil on and off and have no brushes to wear out or create sparks. 3.5 Temperature Sensor LM35 The LM35 series are precision integrated-circuit temperature sensors, with an output voltage linearly proportional to the Centigrade-temperature. Thus the LM35 has an advantage over linear temperature sensors calibrated in ° Kelvin, as the user is not required to subtract a large constant voltage from the output to obtain convenient Centigrade scaling. The LM35 does not require any external calibration or trimming to provide typical accuracies of ±¼°C at room temperature [11] and ±¾°C over a full −55°C to +150°C temperature range. Low cost is assured by trimming and calibration at the wafer level. The low output impedance, linear output, and precise inherent calibration of the LM35 make interfacing to readout or control circuitry especially easy. The device is used with single power supplies, or with plus and minus supplies. 4. RESULTS The Figure.5 shows the overall environment of the project. In general, Furnaces get heated at 1260°C and to control the temperature, coolers should run at high speed i.e., above 1000 rpm. Figure 5 Operating environment of Project As we tested our machine at room temperature or a little high or low to room temperature, the speed of motor is in between 100rpm and 500rpm. According to this ratio our motor will run with a speed more than the existing techniques. The following table gives the observed speed of motor with respect to temperature. The variations in the speed of motor with respect to the temperature are determined and the results of our project are incorporated in Table 1. Table 1: Speed of motor with respect to Temperature Temperature speed of motor 20°-24°C 50 rpm 25°-29°C 100 rpm 30°-34°C 150 rpm 35°-39°C 200 rpm 40°-44°C 250 rpm 45°-50°C Above 50°C 300 rpm 500 rpm Volume 2 Issue 10 October 2014 Page 4 IPASJ International Journal of Computer Science (IIJCS) A Publisher for Research Motivation ........ Volume 2, Issue 10, October 2014 Web Site: http://www.ipasj.org/IIJCS/IIJCS.htm Email: [email protected] ISSN 2321-5992 The following are the pictures of individual elements in the project. Figure 6 Transmitter Machine and Receiver Machines The Figure 6 shows the images of our transmitter and receiver machines of our project. 5. APPLICATION SCENARIOS OF M2M SYSTEM M2M along with Internet of Things extends human life in a diverse way. Facilitation of autonomous M2M communications to handle the interaction of cyber and physical systems, in addition to fundamental technologies, relies on corresponding application scenarios. Namely but not an exhaustive list as Smart home/office, Smart community, smart city, Environmental and ecology monitoring for safety, disasters, agriculture, etc. The real times applications involved are listed as Aerospace, Air Compressors, Automotive, Manufacturing Broadcasting, Casting, Coal, Storage, Cogeneration, Food Processing, Fuel, Cells, Heat Treating, Metal Finishing, Mining, Minerals, Power Generation and Tire Manufacturing. Typical processes include Plating and Anodizing Acid Baths, Rectifiers, Atmosphere Heat rating, Furnaces, Fan Bearings, Fuel Cell Reformers, Jackets and Seals Protective Atmospheres Quench solutions, Induction, Cooling, Heating Coils, Power Supplies Quench Baths, Power Generation and Natural Gas Cogeneration. 6. CONCLUSION AND FUTURE SCOPE This paper presents an application of M2M communications. We do foresee tremendous potential for our proposed system; we will enhance our project with Internet of Things to benefit modern and future human life. The results clearly show the features of rpm of the motor versus temperature which indeed a good sign in M2M communication. The future scope of this project is connecting and controlling our machine with help of Internet. The Internet of Things (IoT) is a scenario in which objects, animals or people are provided with unique identifiers and the ability to transfer data over a network without requiring human-to-human or human-to-computer interaction. IoT has evolved from the convergence of wireless technologies, micro-electromechanical systems (MEMS) and the Internet. For that we have planned to develop a device driver for our Machine so as to access control through Smart Remote using Internet from anywhere. References [1] Machine-to-machine communications: Technologies and challenges Kwang-Cheng Chen a,b,c, Shao-Yu Lien a,d. www.elsevier.com/locate/adhoc,http://santos.ee.ntu.edu.tw/papers/2013 [2] R.Rajkumar, I. Lee, L. Sha, J. Stankovic, Cyber-physical systems: the next computing revolution, in: ACM Design Automation Conference, 2010. [3] L. Atzori, A. Iera, G. Morabito, The internet of things: a survey,Computer Networks 54 (2010) 2787–2805. [4] G. Wu et al., M2M: from mobile to embedded internet, IEEE Communications Magazine 49 (4) (2011) 36–43 [5] S.Y. Lien, K.C. Chen, Y.H. Lin, Toward ubiquitous massive accesses in 3GPP machine-to-machine communications, IEEE Communications Magazine 49 (4) (2011) 66–74 . [6] T. Taleb, A. Kunz, Machine type communications in 3GPP networks: potential, challenges, and solutions, IEEE Communications Magazine 50 (2012) 178–184. [7] 3GPP TS 22.368 V12.0.0, Service Requirements for Machine-Type Communications, September 2012. [8] Patent EP 0197137 A1 http://www.google.co.in/patents/EP0197137A1?cl=en [9] www. en.wikipedia.org/wiki/ARM7#mediaviewer/, http://www.nxp.com/documents/user_manual/UM10139.pdf. Volume 2 Issue 10 October 2014 Page 5 IPASJ International Journal of Computer Science (IIJCS) A Publisher for Research Motivation ........ Volume 2, Issue 10, October 2014 Web Site: http://www.ipasj.org/IIJCS/IIJCS.htm Email: [email protected] ISSN 2321-5992 [10] www.allaboutelectronics.hpage.in/6-important-observation-of-dc-motor_80510837.htm, http://en.wikipedia.org/wiki/DC_motor [11] www.engineersgarage.com/electronic components/lm35, http://www.tij.co.jp/jp/lit/ds/symlink/lm35.pdf [12] K. Zheng, W. Xiang, M. Dohler, Radio resource allocation in LTEadvanced cellular networks with M2M communications, IEEE Communications Magazine 50 (7) (2012) 184–192. [13] Z.M. Fadlullah, M.M. Fouda, N. Kato, A. Takeuchi, N. Iwasaki, Y. Nozaki, Toward intelligent machine-tomachine communications in smart grid, IEEE Communications Magazine 49 (4) (2011) 60–65. [14] http://www.electronicaestudio.com/docs/istd016A.pdf AUTHORS Sufyan Ahamed Khan is a Post Graduate student in Department of Electronics and Communication Engineering with specialization in Digital Electronics and Communication Systems in Priyadarshini College of Engineering and Technology, Nellore, Andhra Pradesh. He received the B. Tech degree in Computer Science and Engineering from JNTUA University, Anantapuramu, Andhra Pradesh in 2011. He is a student member of IEEE. Shaik. Mahaboob Basha is currently working as Head of the Department of Electronics and Communication Engineering in Priyadarshini College of Engineering and Technology, Nellore, Andhra Pradesh. He is engaging with so many Engineering Professional bodies. He is a Member of IEEE, an Associate Member of The Institution of Engineers (India) and Life Member of ISOI .He is guiding several students for Under Graduate and Post Graduate programs of Engineering. He has published more than 15 papers in various National and International Journals and Conferences. Volume 2 Issue 10 October 2014 Page 6