Published on 20 May 2022. Written by Naveen Lakkundi
Here we propose raspberry pi based wheelchair with safety features. The system utilizes raspberry pi along with graphic LCD display, rf technology, and motorized circuit in order to achieve this system. Our proposed system consists of a controller circuit and a wheelchair circuit. The controller circuit allows the user to provide direction commands to the wheelchair through a directional graphical LCD display. The wheelchair circuit consists of an rf receiver used to receive these commands and then operate the wheelchair motors in order to achieve the desired movement. This allows the disabled person to operate the wheelchair easily as well as another person can operate the wheelchair from 3-4 meters distance. Also, the system consists of emergency help features for the disabled. If the person is in trouble or needs help the person just needs to press a button and his GPS coordinates are sent to his/her loved ones through SMS message. Also if the person falls from a wheelchair or is unable to press the button, he/she just needs to shout help and the system automatically sends the GPS coordinates through SMS message to persons loved ones.
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The proposed system uses ultrasonic sensors attached to raspberry pi in order to detect user hand positions. Based on the input received the user may change different beats or add effects in between. We use multiple ultrasonic sensors to allow for a variety of sound effects. Our system uses a speaker in order to play those beats.
We here use a raspberry pi board in order to get fast processing and no break constant music beats for good sound effects. Thus our proposed system puts forward an innovative beat maker and mixer system. We here use a raspberry pi board in order to get fast processing and no break constant music beats for good sound effects. Thus the system puts forward an innovative beat maker and mixer system.
Project Description:
Raspberry Pi 3 B: Raspberry Pi is a Microprocessor which has 40 pins with 27 GPIO pins, it has a 1 GigaBytes of RAM and an SD card slot for the storage or the ROM,it can be used as a mini computer for low computing operations, it has a dual-band LAN, faster Ethernet, Bluetooth, it also has USB and HDMI ports for connecting devices. This device can be used as a server which we are doing in this project.
Micro SD card: You will need a minimum of 8 gigabytes SD card for this project, this SD card is used as the ROM of the raspberry pi. Use 32 Gigabyte or 64 Gigabytes of
Display: You can use any kind of display for the project, like monitors, TV or any size display that fits your requirement to configure the Pi.
Li-Po battery: Raspberry Pi needs a power supply of 5V and 2A and Li-Po battery can be used for the power supply. Use 2500mAh Li-Po battery.
DC-DC Voltage Regulator: DC-DC Voltage Regulator gives a constant voltage to 5V.
Mouse and keyboard: You will need this to control, monitor, and to configure the Pi.
GSM module: GSM stands for Global system for mobile communication, this GSM module can connect to a mobile network and can send text messages and perform voice call to other mobile devices.
GPS module: GPS stands for Global positioning system and by using this module the position of the device can be known that is the latitude and longitude can be known. This Module shows the elevation that is the height above the sea level.
Wheel chair chassis:You will need a motorized wheelchair with which you can move without using any human power.
RF Transmitter module: This module has an encoder which helps in converting the data from parallel to serial communication data format and this data is then transmitted using radio frequency.
RF Receiver module: This module has a decoder in it and the received data is decoded so that Arduino can understand the data received.
Project Implementation:
Install the Raspbian OS into the SD card, and boot the Raspberry Pi.
Install Python IDE 3 in Raspberry Pi.
Connect your Display, keypad to the raspberry pi.
Write a Python program with which you can actuate the wheelchair with a remote-controlled transmitter, and when there is an emergency the person can send an alert signal to his friends or family and even to police. The location of the wheelchair will be sent to the registered phone numbers.
Project Brief:The Raspberry Pi when configured and all the required software has been installed then the Pi is ready to be used as a safe wheelchair with features like sending an alert signal when in need.
Software requirements:
Raspbian OS(Debian Linux): Raspbian operating systems are based on Linux, Raspberry pi are also compatible with Windows and IOS but prefer any Linux based OS
Python IDE 3: Python IDE 3 is compiler where you can write and compile python program.
Programing Language:
Linux (terminal commands)
Python
Kit required to develop Wheelchair wih safety system:
