MOTION CONTROL USING VOICE FOR WHEELCHAIR APPLICATION

2021

There is always a need for a physically challenged persons to seek help of others for moving from one place to another. Thus, the problems that they are facing can be solved by using speech recognition technology to move the wheelchair. Speech recognition technology is a key which may provide a new way of human interaction with machines or tools. The proposed work is to facilitate the movement of people who are disabled or handicapped and elderly people who are not able to move well. Here the Voice Controlled Wheelchair moves by using speech recognition module and with the possibility of avoiding obstacles. A program is designed to interface with the Renesas microcontroller and voice recognition unit that recognizes a voice and in turn controls the movement of wheelchair. The design of this smart system will allow certain people to live a life with less dependence on others. Index Terms – Renesas microcontroller, Speech recognition, Android.

Control Engineering Practice, 1995

This paper describes the control of an electric wheel chair with voice commands. This chair has been developed and built at the U.A.H. Electronic Department and financed by the ONCE Foundation (Spain). The first prototype consists of voice recognition, motor control, user interface and central processor modules. The electronic system allows the chair user a safe, easy ride, and guarantees the concordance between user commands and actual trajectories. Furthermore, the system has been designed to allow the addition of future features, like obstacle and stair detection and the tele-commanding of electrical household appliances from the chair.

People suffering from Parkinson's disease or from paralysis (paraplegia or quadriplegia) have the inability to move their limbs and other voluntary organs, they are dependent on someone's help to move around all the time and this makes them feel incapable and brings down their morale to survive. A solution to this becomes inevitably necessary in order to provide them with the necessary mobility and independence as they are inferior to nobody. The existing large scale manufactured versions of the wheelchair are either manually driven i.e. by the help another individual or hand driven. Paralyzed patients however do not have the ability to move their limbs but do possess the ability of speech which is the whole concept behind this voice driven wheelchair. The aim of this wheelchair is to provide a whole new platform of independent existence to these patients in the form a voice guided wheelchair. An implementation of the manufacture of this wheelchair on a large scale, the reduction of cost by simplicity in setting up and working. This will enable the wheelchair to be provided at an affordable price to the common man, this acted as another big driving force.

This project opens a new hope to the physically challenged people. Freedom of mobility is the dream for every patient especially in the case of people suffering from cases such as quadriplegics and multiple sclerosis .Although many types of mobility equipments are available for these type of patient there is no independent means of mobility device for these patients since they cannot drive a joystick or manual wheelchair. In order to aid these types of patients we are developing voice operated wheelchair. The movement of the wheelchair is controlled by the voice of the user. This wheelchair can be driven to the preferred direction with minimum effort.The user requires only less training to use this wheelchair. Technically this wheelchair is integrated with a voice recognition module to identify the voice, a microcontroller which can be programmed other supporting hardware components and a motor driver L293D.The proposed microcontroller based voice operated wheelchair would bring more convenience for the disabled people. Two DC motors can be driven simultaneously, both in forward and reverse direction with the help of L293Dmotor driver. Here we can control the motors to move right, left, forward, reverse, free runs and stop or break.To provide tilt operation for this wheelchair we use selective movement of a single motor based on the diameter and speed of the wheel. Also can calculate how much movement is required to tilt the wheelchair at a desired angle.

2016

This paper touches the life of people with various kinds of disability; especially quadparalysis patients who need help at every step. Multipurpose voice controlled wheelchair is the best solution for those people. The wheelchair can serve the patients daily needs without continuous help from others. All commands are implemented just by the patient voice orders. The novelty of this wheelchair lies in its ability to turn into a bed, can rise up by 100cm, can move everywhere and at any direction, have a fan in the seat to refresh the air to protect the patient from ulcers and finally the patient and his family will not suffer any more from going to the bathroom or when taking a shower. Keywords—component; quad paralysis patients; Voice controlled Wheelchair

Many people with disabilities do not have the dexterity necessary to control a joystick on an electric wheelchair. Moreover, they have difficulty to avoid obstacles. The aim of this work is to implement a multi-modal system to control the movement of an Electric wheelchair using small vocabulary word recognition system and a set of sensors to detect and avoid obstacles. The methodology adopted is based on grouping a microcontroller with a speech recognition development kit for isolated word from a dependent speaker and a set of sensors. In order to gain in time design, tests have shown that it would be better to choose a speech recognition kit and to adapt it to the application.

2019

The idea of using voice activated technology for controlling the motion of the wheelchair is to help many people with disabilities especially quadriplegics who do not have the dexterity necessary to control a joystick on an electrical wheelchair. The aim of this study is to implement an interesting application using small vocabulary word recognition system. The methodology adopted is based on grouping a microprocessor with a speech recognition development kit for isolated word from a dependent speaker. The resulting design is used to control a wheelchair for a handicapped person based on the vocal command and furthermore the user can select either slow or fast speed to move the system. This speed selection is in important for safety and extra maneuverability of the user. For example, if the user need only to move in a short distance or to approach object, he should use the slow speed. This paper describes the design and development of the motion control using voice recognition for a...

Many people with disabilities do not have the necessary ability to control a joystick on an electric wheelchair. Moreover, they have difficulty to avoid obstacles. The aim of this work is to implement a multi-modal system to control the movement of an Electric wheelchair using small vocabulary word recognition system and a set of sensors to detect and avoid obstacles. In this work we adopted the use of a microcontroller , a DSP processor and a hardware speech recognition module for isolated word from a dependent speaker. To give the user more security, we included on the electric wheelchair a set of sensors in order to avoid obstacles. To gain in time design, tests have shown that it would be better to choose a speech recognition kit and to adapt it to the application.

Wheel chairs are the way of re-incarnating life in the lives of physically disabled people. The number of people, who wants to move around with the help of some artificial means, whether through illness or an accident, is continuously increasing. It becomes difficult for a normal person to drive the wheel chair in domestic environment and hence it becomes still more difficult for a person with hand and leg impairments. The main aim of this paper is assist paralyzed (quadriplegic and paraplegic) people and physically challenged people. The prototype developed consists of user dependent voice recognition system and accelerometer interfaced, which is being further extended for real time implementation. Intended users control the chair by wearing a glove fitted with accelerometer for controlling the movement and direction of the wheelchair. The wheel chair is also assisted with a Voice recognition kit, with the help of which the user can guide the wheelchair through voice commands. Ultrasonic sensors are used for real-time obstacle detection

Today's world contain of a large variation of people. Mostly disability person is depends upon other for their living. But in the today's fast developing world, people is busy in work so that they don't have enough time for physically challenged people.The main aim this system physically challenged people can move inside the home without any trouble. In this system voice recognition system used for physical challenge people so person move from one place to another place with the ease. In the voice navigation system voice from physical handicapped match with the predefined store voice then the chair will move with accepted direction. According to the received voice, the wheelchair is automatically understood end point and the wheelchair moves according to the path which is predefined in system. It is contains obstacle avoidance technique.