Introduction: Helmet for Blind(HALO)-haptic Assitted Locating of Obstracle

Picture of Helmet for Blind(HALO)-haptic Assitted Locating of Obstracle

To navigate blind
people freely without the use of a guide or a stick.

Haptic assisted
locating of obstacles is a model helmet for blind people to navigate freely without the use of a guide dog or cane.

HALO consist of series of rangefinders that would take input from sensors and output feedback to pulse vibration motors placed on a person’s head. If a region was lacking feedback, then it would be safe to proceed in that direction.

There are three rangefinders which uses ultrasonic waves to detect an obstacle.

The Module automatically sends eight 40 kHz and detect whether there is a pulse signal back.

IF the signal back, through high level , time of high output IO duration is the time from sending ultrasonic to returning. Test distance = (high level time × velocity of sound (340M/S)/2.

Microcontroller used in this project is an open source programmable device which provides integrated development environment (IDE) based on the Processing project, which includes support for the C and C++ programming languages.

Three vibrating motors are placed and connected to the microcontroller through jumper cables

The distance obtained from three different range finders are fed to the microcontroller and when the obstacle is within 75 cms, digital signal from the microcontroller is sent to the corresponding vibrating motors which gives an haptic feedback to the user. When there is no obstacle there is no feedback from the vibrating motors and thus it would be safe to proceed in that direction

Step 1: Things Required

Picture of Things Required


2.US sensors(3)

3.vibrating motors(3)

4.jumper cables/connecting wires

Step 2: Connections

Picture of Connections


Eng_zohairH (author)2017-12-13

please upload a coding

hzy_jj (author)2016-07-10

please upload a coding

Dinoman217 (author)2016-05-02

This is cool and all, but could you upload a coding?

prajeshaasir (author)Dinoman2172016-07-03

i hav uploded my program code pls chech it

brainwired (author)2016-06-19

code error

prajeshaasir (author)brainwired2016-07-03

can u pls share your error?

ManasS2 (author)2016-04-28

What if obstacle is small ,comes in legs ,and can it protect a persont from falling in a hole

prajeshaasir (author)ManasS22016-07-03

we can improve this and can attach some more sensors near foot

brainwired (author)2016-06-19

sir can u plzz help /????

prajeshaasir (author)brainwired2016-07-03

yea wats ur prob?

prajeshaasir (author)2016-03-21

soon will upload some more images and videos,all those are with my frnd

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