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ABSTRACT
As technologies change, so will clothing. Also called smart clothing, wearable computers, e-textiles, intelligent textiles and flexible electronics, wearable electronics defined as electronics worn on or attached to the human body. Though hand held gadgets rule the world presently, the next step to total connectivity and personal computing is a no-hands, intelligent system that will work in sync with our actions and network with other smart applications. There are many types of wearable sensors being developed like bending sensor, acceleration sensor and push switch etc.,
This paper explains about how smart clothes are fabricated and how they are used in real-time applications along with an application implemented. These electronics are highly helpful in bio-telemetry (using by NASA), motion gesture (Animation ) and many more. I have used the basic type of wearable sensors to make wireless Braille key-pad1 to help the blind to type in computer. Here we design a new module which seems worth while to make less expensive and light accessible and usable to all blind users. There were instruments like 8-key keyboard , Sensor Braille Keyboard, Braille keyboard and many more to help the blind, but none of them achieved expectations due to it’s artificiality, more learning time, practice, high error factor and cost.
The device consists of a pair of gloves having wearable sensors connecting PC through RF wireless transmission. The gloves consisting of sensors on each finger which can be easily accessible by touch of thumb finger. By simply activating the sensors combination of Braille characters is achieved and it’s decoded by the decoder to display the alphabets or numeric on computer screen. For verification a voice back-up is also provided from computer.
Use of gloves gives naturality to our device. Since blind too can touch their finger tips without any difficulty with high accuracy. Only difference is the sensors sits between the fingers and makes the job done. It is highly recommended since no extra training needed for visually impaired as they are already aware of Braille language. With in less time of use high accuracy can be achieved.
INTRODUCTION
Wearable computers and affective computing is becoming one of the most interesting and complicated topics of computer human interaction. It involves various fields of study, such as computer science, psychology and physiology. Even though the literature on the subject is still at its primal stages, many projects are underway to discover the page link between psychological states and physiological responses of the human body. These are the most recent studies that, NASA and the MIT Labs for instance, have been embarking on. Wearable electronics defined as electronics worn on or attached to the human body. But when they are going to be in touch with skin it’s most essential that wires must be properly insulated and the devices used be very flexible. However, the subjects of the experiments are usually covered with multiple wires to register every little change that occurs on their bodies while they are performing a series of psychological and physiological tasks. The need to make those sensors less intrusive as possible has given affective computing a new goal: wireless wearable sensors.
HOW DO CLOTHES CONDUCT?
Integrating electronics into clothing is a major new concept, which opens up a whole array of multi-functional, wearable electro-textiles for sensing/monitoring body functions, delivering communication facilities, data transfer, individual environment control etc…
Some studies have concentrated on creating sensors that could be inserted in pieces of clothing and finding presentable fabrics that can hide the wires and sensors. Others have stressed the incorporation of the sensors into everyday gadgets, such as backpacks or watches. All the projects related to this topic seem to have in common the problem of adding stress and the feeling of uneasiness during experiments.
The materials investigated are metal yarn, yarn containing conductive fibers like stainless steel mixed with natural or synthetic fibers, or carbon coated threads. Some other conductive textiles like Flectron (metallised polyester), Belltron (Polyimide with carbon) and CT(carbonized glass fiber textile.)
TYPES OF SENSORS
There are many types of sensors being developed like Bending sensor, acceleration sensor, push switch, and all types of medical sensors that can get the data as well as to transmit to nearest possible processing server. Wearable sensors are having high weight in bio medical sensing. Wearable sensor and information technology can have a positive impact on human state of health assessment.