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Design for a Cause - Design Challenge
Blog Design for a Cause - Smart Voice Synthesizer, Visualizer-Flex Sensor
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  • Author Author: prashanth.nagendrappa
  • Date Created: 3 Aug 2018 4:41 PM Date Created
  • Views 1260 views
  • Likes 4 likes
  • Comments 7 comments
  • the challengers
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Design for a Cause - Smart Voice Synthesizer, Visualizer-Flex Sensor

prashanth.nagendrappa
prashanth.nagendrappa
3 Aug 2018

#Blog3image

 

Hello Everyone

 

Got received other pending parts!

Let’s begin the basic element that required to capture the Gesture.

Gestures are the physical actions that convey some meaningful information. It includes movement of the hands.

The primary goal is to capture the bending information of the fingers through the gesture that conveys some messages.

 

Hence we need a sensor that can be attached to the fingers and then it can be able to capture the bending details.

The most suitable sensor that can be used to detect bending is Flex Sensor.

image

A flex sensor or bend sensor is a sensor that measures the amount of deflection or bending. This flex sensor is a like variable resistor. The resistance of the flex sensor increases as the component bends. Since the resistance is directly proportional to the amount of bend.

 

Here are some photos that depict the flex sensor working

 

The reading of the multimeter shows the resistance of the Fex Sensor when it is straight and while bending.


image
The reading of the multimeter shows the resistance of the Fex Sensor while bending.

image

Stay Tuned image

Thank You

 

 

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Top Comments

  • genebren
    genebren over 7 years ago +2
    Interesting sensor. Is the change in resistance a function of the amount of bending, or the position of the bend relative to the connector? Do you have an idea of what finger gestures you are considering…
  • prashanth.nagendrappa
    prashanth.nagendrappa over 7 years ago in reply to genebren +1
    genebren Sir Yes, It is the change in resistance as a function of the amount of bending. When the substrate is bent, the sensor produces a resistance output correlated to the bend radius—the smaller the…
  • genebren
    genebren over 7 years ago in reply to prashanth.nagendrappa +1
    Going back and doing a little re-reading (prior posts), I see that you are going to use movement (x,y,z) along with the flex of fingers. This opens up a lot of the sign language actions (single handed…
  • aspork42
    aspork42 over 7 years ago

    Very cool! Will the glove require just five flex sensors (one per finger) or 14 (the number of individual knuckles on the hand)?

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  • prashanth.nagendrappa
    prashanth.nagendrappa over 7 years ago in reply to genebren

    Thank You genebren  Sir

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  • genebren
    genebren over 7 years ago in reply to prashanth.nagendrappa

    Going back and doing a little re-reading (prior posts), I see that you are going to use movement (x,y,z) along with the flex of fingers.  This opens up a lot of the sign language actions (single handed).  I had thought that you were limited to just fingers, that seemed like a very limited number of combinations.  This should be very interesting.

     

    Gene

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  • prashanth.nagendrappa
    prashanth.nagendrappa over 7 years ago in reply to genebren

    genebren Sir

     

    Yes, It is the change in resistance as a function of the amount of bending.

     

    When the substrate is bent, the sensor produces a resistance output correlated to the bend radius—the smaller the radius, the higher the resistance value.

     

    We are planning to use single-handed gestures. Kindly suggest if you have any others choices to improve the design.

    Thanks

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  • genebren
    genebren over 7 years ago

    Interesting sensor.  Is the change in resistance a function of the amount of bending, or the position of the bend relative to the connector?  Do you have an idea of what finger gestures you are considering?

    Good luck,

    Gene

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