REDACTION BASED ATM MONITORING SYSTEM USING MSP 430

Transcription

1 REDACTION BASED ATM MONITORING SYSTEM USING MSP 430 Introduction: Now a day s electronic devices become smaller and lower in power Requirements, and they are less expensive. we have begun to adorn our bodies with personal information and communication appliances. Such devices include cellular phones, pagers and personal digital assistants and many more. But currently there is no such method for these kinds of devices to share data. Networking these kinds of devices can reduce functional I/O redundancies and allow new Conveniences and services. Human society is entering an era of modern computing, when networks are smoothly interconnected. The implementation of ubiquitous services requires three levels of connectivity: Local Area Networks (LAN), Wide Area Networks (WAN), and Human Area Networks (HAN) for connectivity to personal information, share data, media and communication appliances within the much smaller areas for communication. RedTacton is a technology that uses the surface of the human body as a high speed and safe network transmission path. Here, the human body acts as a transmission medium supporting half duplex communication at 10Mbit/s. Red Tacton technology is an electronic future where information can be accessible whenever and wherever needed at our finger tips. Some of the communication equipment that is required to provide this immediate access to information will be Incorporated into our attire. Justas a quick look at today's wristwatch saves a trip to the nearest clock; a glance at tomorrow's wristwatch will replace finding a terminal to check . RedTacton is a new Human Area Networking technology which was introduced by Nippon telegraph and Telephone Corporation (NTT s) that uses the human body surface is a high speed and safe network transmission path. RedTacton is a Break-through technology that enables reliable high-speed HAN for the first time.

2 BUFFER DRIVER RELAY Block diagram CODE GENERATOR (ENCODER) OUTPUT DEVICES BUZZER VOICE CHIP VISUAL INDICATION MSP430 DECODER 4 X 4 KEYPAD INTERFACE LCD DISPLAY +12 Volts +5 Volts 230 V, AC TRANSFORMER RECTIFIER FILTER REGULATOR HARDWARE REQUIREMENTS: MSP430, LCD, Relay Driver, Relays, Resistors, Capacitors, LEDs, Crystal, Diodes, Transformer, Voltage Regulator, Push Button. SOFTWARE REQUIREMENTS: Keil compiler uvision 4, Language: Embedded C or Assembly, WLPRO Programmer

3 Block Diagram Explanation: Power supply unit This section needs two voltages viz., +12 V & +5 V, as working voltages. Hence specially designed power supply is constructed to get regulated power supplies. 4X4 Keypad: A keypad is a set of buttons arranged in a block or "pad" which usually bear digits, symbols and usually a complete set of alphabetical letters. If it mostly contains numbers then it can also be called a numeric keypad. Keypads are found on many alphanumeric keyboards and on other devices such as calculators, push-button telephones, combination locks, and digital door locks, which require mainly numeric input. DTME Encoder: The DTMF Encoder uses a radio frequency to transmit the control signals for generating the DTMF frequencies, a dedicated IC UM95089 (which is used a dialer IC in telephone instruments) is used here. It uses a quartz crystal of 3.58 MHz DTMF Decoder: This project uses DTMF decoder UM 8870 IC. The DTMF decoder identifies the transmitted signal. If a valid code is received then only the switch sends the signal to the ARM controller, the ARM controller used is ARM7LPC2148. MSP 430 Microcontroller: MSP low-power microcontrollers (MCUs) from Texas Instruments (TI) are RISCbased, mixed-signal processors that include smart analog and digital peripherals and offer a number of additional options such as low-power embedded RF and security such as

4 AES encryption. MSP microcontrollers offer the ultimate solution for a wide range of low-power and portable applications. Buffers Buffers do not affect the logical state of a digital signal (i.e. a logic 1 input results in a logic 1 output whereas logic 0 input results in a logic 0 output). Buffers are normally used to provide extra current drive at the output but can also be used to regularize the logic present at an interface Drivers This section is used to drive the relay where the output is complement of input which is applied to the drive but current will be amplified. Relays It is a electromagnetic device which is used to drive the load connected across the relay and the o/p of relay can be connected to controller or load for further processing. Buzzer: A buzzer or beeper is an audio signaling device, which may be mechanical, electromechanical, or piezoelectric. Typical uses of buzzers and beepers include alarm devices, timers and confirmation of user input such as a mouse click or keystroke. Voice recorder: The apr33a series are powerful audio processor along with high performance audio analog-to-digital converters (ADCs) and digital-to-analog converters (DACs). The apr33a series are a fully integrated solution offering high performance and unparalleled integration with analog input, digital processing and analog output functionality. High quality audio/voice systems with lower bill-of-material costs can be implemented with

5 the apr33a series because of its integrated analog data converters and full suite of quality-enhancing features such as sample-rate convertor. In this messages must be recorded or played back sequentially, specially designed for simple key trigger, user can record and playback the message. Meanwhile, this mode provides the power-management system. Methodology: RedTacton is a Human Area Networking technology, which is developed by Robin Gaur Jind that uses the surface of the human body as a safe, high speed network transmission path. It is completely distinct from wireless and infrared technologies as it uses the minute electric field emitted on the surface of the human body. A transmission path is formed at the moment a part of the human body comes in contact with a RedTacton transceiver. Communication is possible using any body surfaces, such as the hands, fingers, arms, feet, face, legs or torso. RedTacton works through shoes and clothing as well. When the physical contact gets separated, the communication is ended. The RedTacton transmitter induces a weak electric field on the surface of the body. The RedTacton receiver senses changes in the weak electric field on the surface of the body caused by the transmitter. This module consists of RedTacton transmitter, RedTacton receiver, Driver, ARM controller unit and the Voice bank. RedTacton is a HAN; body of human being is used for transmission of signals. RedTacton transmitter consists of a DTMF encoder which generates both valid and Invalid signals and can be transmitted through human body through the RedTacton receiver (DTMF decoder) for further processing. In RedTacton receiver by the use of DTMF decoder the transmitted signal is identified.

6 As the transmitted signal is of very low voltage, buffers and drivers are used to send the received signal to the electromagnetic switch. Electromagnetic switch checks the received signal with the predefined valid code. If an invalid code is received and detected in the switch then the buzzer starts ringing indicating that an invalid card is trying to access the ATM. If a valid code is received, then only the switch sends the signal to the main control unit which is the microcontroller. If ARM controller gets active it switches on the keyboard where predefined options are stored to perform various tasks such as: Enter password, Change of password, New password, etc. After entering the valid password the voice bank gets activated. In voice bank predefined options with keys are present which guides the user to select appropriate action in the ATM such as: Cash withdrawal, Pin change, Account balance, etc Advantages: 1. RedTacton does not require the electrode to be in direct contact with the skin. 2. Can transmit data at a rate higher than that of peer technologies. (max. of 10Mbps) and Security is more. 3. RedTacton transceivers are programmable and we can decide what to share with whom and what devices you communicate with. 4. Each communication occurs in separate channels. 5. Transmission speed does not deteriorate even though the number of users increases. And More secure than Bluetooth. 6. Data loss during transfer is less 7. Use of minimum amount of power (of some milli -volt range) 8. Superior than infrared technology & Wi-Fi 9. No problem of hackers. It is very hard to pick up stray electronic signals radiating from the body.

7 Disadvantages: 1. The obvious barrier to entry is that the cost and time to develop HAN TECH. is very expensive. 2. As a new technology HAN need to gain popularity among users to help pull the technology into the marketplace instead of having it pushed upon them. 3. Widespread marketing campaigns will need to be developed to highlight the benefits of HAN technology to facilitate its adoption. 4. Not useful unless many people adopt it. 5. It can be useful within few centimeters only Applications: Automobile Applications Conference Systems Touch Advertising Wireless Headset This project can be used in Military, Medical and Consumer applications.