About 2 Million people are blind in Pakistan.Their number can be increase in future.There is a need of cost effective system.It is necessary to propose a smart system for blind people.We are going to implement and design the hardware prototype for blind person.
The Smart Blind Man Stick
About 2 Million people are blind in Pakistan.Their number can be increase in future.There is a need of cost effective system.It is necessary to propose a smart system for blind people.We are going to implement and design the hardware prototype for blind person.
The main Objectives are,
Voice based alerts
Obstacle detection
Obstacle identification
GPS & GSM system
Low cost solution
Low power consumption
Ultrasonic sensors measure distance by ultrasonic waves.Raspberry Pi is a microcontroller.It is a low cost computer.GPS module is used to know the current location.GSM module is used to contact to mobile numbers.Camera is used to take obstacle pictures,which are compared with samples by using image processing.
The proposed system is very useful and relevant for blind persons.
The system is having special features like obstacle monitoring and picture scanning which makes the person’s daily life much easier.
By using this proposed system it’s much easier for them to do their activities and can easily go anywhere.
If the blind person wants to know their current location they can press the switch assigned for that purpose.
If the blind person also wants some help during emergency,a call or message is sent to a set of mobile numbers stored in a system.
The obstacle detection range is 3-5 meter.

Ultrasonic sensors measure distance by ultrasonic waves.Raspberry Pi is a microcontroller.It is a low cost computer.GPS module is used to know the current location.GSM module is used to contact to mobile numbers.Camera is used to take obstacle pictures,which are compared with samples by using image processing.
| Item Name | Type | No. of Units | Per Unit Cost (in Rs) | Total (in Rs) |
|---|---|---|---|---|
| Raspberry Pi 4 | Equipment | 1 | 14000 | 14000 |
| Folding Stick | Equipment | 1 | 1500 | 1500 |
| Ultrasonic Sensors | Equipment | 4 | 800 | 3200 |
| GPS | Equipment | 6000 | 1 | 6000 |
| GSM | Equipment | 6000 | 1 | 6000 |
| Camera for testing | Miscellaneous | 1 | 1000 | 1000 |
| Raspberry 3b+ | Equipment | 1 | 6000 | 6000 |
| Other miscellaneous | Miscellaneous | 1 | 3300 | 3300 |
| Total in (Rs) | 41000 |
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