Voice and touchscreen operated wheelchair ppt

Voice and touchscreen operated wheelchair ppt

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  DR.AMBEDKAR INSTITUTE OFTECHNOLOGY Department of Telecommunication Engineering 2015-2016
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  HARISHAAV [1DA12TE014] NAUMAN KA[1DA12TE026] PREKSHAB VIRUPAKSHA [1DA12TE036] SYED SALEEM AHMED [1DA12TE053] GUIDED BY Mrs. Vidya Honguntikar Associate Professor Dr. Ambedkar Institute Of Technology Bangalore
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  Introduction  A disabledperson is enabled to move around independently using a mobile touch screen and a voice recognition which is interfaced with motors through microcontroller.  When the direction is to be changed, the mobile touch screen sends a data through Bluetooth to direct the user to required destination .  This can also be controlled through simple voice commands using voice controller.  Implementation of GSM technology in Medical applications .
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  Objective  Providing independent,productive and enjoyable living for physically challenged people by the use of voice and touch screen operated wheelchair.  The goal of this smart wheelchair project is to enhance an ordinary powered wheelchair using sensors to perceive the wheelchair's surroundings, a speech interface to interpret commands.  Intelligent wheelchair will play an important role in the future welfare society. The use of intelligent wheelchair encourages the view of the machine as a partner rather than as a tool  Implementation of infrared sensor which is used to sense the obstacles coming in path of robot.
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  Continued… Voice Operated Wheelchair
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  Existing system    Whenthe voice is detected, the wheelchair can be controlled to move in that direction by giving commands to the wheelchair.  The electrical signals are transferred to these motors using some hardware ports, called the communication ports.
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  Voice Operated Wheelchair Fewpatients such as quadriplegics’ and multiple sclerosis type cannot drive joystick operated powered wheelchair  they are dependent on other people or helpers to move from one place to another and in such a way they don’t have the freedom of mobility. This powered wheelchair motor control and drive system which consists of microcontroller and DC motors The voice recognition system is used to detect and recognizes the patient’s voice and its output in the digital form will be sent to microcontroller
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  ARDUINO Inexpensive Cross-platform Open source andextensible software Simple, clear programming environment Open source and extensible hardware
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  • Micro-controller • GSMmodule • Distance Sensor • Heart Beat Sensor    
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  Continued… •Temperature Sensor •Motors •Drivers •Easy VRModule
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  Continued… The Arduino Unois a microcontroller board based on the ATmega328. It has 14 digital input/output pins 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. The SIM900 is a complete Quad-band GSM/GPRS solution in an SMT module which can be embedded in the customer applications. Featuring an industry-standard interface, the SIM900 delivers GSM/GPRS 850/900/1800/1900MHz performance for voice, SMS, Data, and Fax in a small form factor and with low power consumption. A DC motor is any of a class of electrical machines that converts direct current electrical power into mechanical power.
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  A simple DCmotor has a stationary set of magnets in the stator and an armature with one more windings of insulated wire wrapped around a soft iron core that concentrates the magnetic field. A light-emitting diode (LED) is a two-lead semiconductor light source. It is a pn-junction diode, which emits light when activated. Heart beat sensor measures the Heart beat of a person. Heart rate can vary as the body's need to absorb oxygen and excrete carbon dioxide changes during exercise or sleep. The HC-SR04 ultrasonic sensor uses sonar to determine distance to an object like bats do. It offers excellent non- contact range detection with high accuracy and stable readings in an easy-to-use package. From 2cm to 400 cm
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   A buzzeror beeper is an audio signaling device, which may be mechanical, electromechanical, or piezoelectric. The L293D motor driver is available for providing User with ease and user friendly interfacing for embedded application. The Temperature sensors are precision integrated-circuit temperature devices with an output voltage linearly- proportional to the Centigrade temperature.
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  Embedded C Embedded Cis a set of language extensions for the C Programming language by the C Standards committee to address commonality issues that exist between C extensions for different embedded systems. Embedded C includes number of features not available in normal C, such as, fixed-point arithmetic, named address spaces, and basic I/O hardware addressing. Embedded C uses most of the syntax and semantics of standard C, e.g., main () function, variable definition, data-type declaration, conditional statements (if, switch, case), loops (while, for), functions, arrays and strings, structures and union, bit operations, macros, etc.
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  Advantages of EmbeddedC It is small and simpler to learn, understand, program and debug. It is fairly efficient C compilers are available for almost all embedded devices in use today. Compared to assembly language, C code written is more reliable and scalable, more portable between different platforms. It supports access to I/O and provides ease of management of large embedded projects.
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  Advantages Input can bechanged rapidly Automated operation More reliable User friendly Reduce man power Less wiring because of Bluetooth Very easy to use
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  Disadvantages It has anoperating range of 10 meters. RFID technology is often expensive. Even the best speech recognition system sometimes make errors.
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  Applications Hospitals Home The wheel chaircan also be operated by blind people Can be operated by the handicapped person itself Ability to provide sufficient risk management Obstacles in the way of wheelchair are detected and avoided using IR sensors
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  Conclusion  The motordrive and control system of the prototype intelligent wheelchair has been presented. The proposed voice & touchscreen operated intelligent wheelchair would bring more convenience for the disabled people. The technology can also enhance safety for users who use ordinary joystick-controlled powered wheelchairs, by preventing collisions with walls, fixed objects, furniture and other people.
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  Future Scope To makethe present touch screen feasible to all classes of disabled, particularly for the blind, the touchscreen can be made Braille so that the blind person can feel the touch pad and operate the wheelchair accordingly. The touchscreen in the present prototype has keys as the input mode. Also, the wheelchair can be controlled by the user himself through voice recognition. The range of sensing can be further increased by using high accuracy ultrasonic sensors. To save energy, the energy from the motion of the