ASTHRA is an automated robotic wheelchair and patient monitoring system that aims to help disabled patients with locomotion and provide medical attention. It uses embedded systems and dynamic memory mapping to allow the wheelchair to move automatically based on the patient's needs or requests over radio frequency. The system also monitors and transmits patient vital signs to help with medical care. ASTHRA aims to give patients independence with mobility and improve healthcare services.

1. ASTHRA
An Automated Robotic Vehicle
for the Disabled patients using
Embedded Systems

2. INTRODUCTION:
• The disabled people those who are physically challenged, the
blind, old people and those suffering from diseases such as
Osteoporosis and rheumatics face problems in their routine
life mainly because of LOCOMOTION. With regard to hospitals,
a lot of valuable human lives can be saved if we could still
improve the MEDICAL ATTENTION rendered to the patients.
• ASTHRA is an automated, dynamic memory mapped robotic
vehicle (wheel chair) which enables the disabled to carry on
their locomotion with ease and confidence. Also ASTHRA acts
as an AUTOMATED PATIENT MONITORING UNIT which enables
to transfer vital information during emergency as well as
normal conditions..

3. • The Vehicle mainly consists of five basic components including a
EMBEDDED WEB SERVER, DC MOTOR (WIPER TYPE) with driver
circuit, an ULTRASONIC TRANSMITTER AND RECEIVER to detect
obstacles, a RADIO FREQUENCY REMOTE (TRANSMITTER &
RECEIVER) and PROGRAMMABLE AND CONTROL MEMORY UNIT.
• The main aim of ASTHRA is to provide a better interface for the
patients and help them perform basic locomotion to the desired
place especially in the hospitals.
• The added concept of the embedded web servers also makes
effective communication between the hospital record system
containing the details of the patients regarding their various modes
of treatments.

4. EXISTING SCENARIOS
• The primary disadvantage in this
mechanism is the NEED TO BE
DEPENDENT on others for
locomotion. Also this system is
MANUAL, ie, it operates
completely by human operation.
• With respect to Patient
Monitoring, just manual
Patient Monitoring systems
are available, which includes
data entry regarding the
patient in Data Pads.

5. PROPOSED SYSTEM

6. Vehicle Movement table
State of State of Direction • MDC - This stands for
right left motor of motion
motor
the Motor Driving
on off Moves
Circuit.
right • Based on the control
off on Moves left rendered by the
on on Moves Memory management
straight unit, the MDC drives
off off stops the motor which
controls the movement
of the vehicle’s wheels.

7. • RF MODULE - This stands for the Radio Frequency Receiver Module.
The patient is provided with an RF remote by which he can summon
the chair to any place .
• OBST. DRV -Ultrasonic Receivers and Transmitters are fitted
upon the Obstacle detection device which detects Obstacles
on the way. Buzzer is also fitted to this circuit which beeps when
an obstacle is encountered&run by a comparator.
• MMU -consists of a PIC MICROCONTROLLER. It enables
DYNAMIC MEMORY MAPPING which enables the vehicle to
be AUTOMATED.
• EWS . (Embedded web server) .The central function unit to get
access on an embedded system via Web browser is the Web
server. This is used to send the information through the
internetwork.
• It maintains for future use. This enables effective PATIENT
MONITORING.

8. Complete view of ASTHRA

9. DYNAMIC MEMORY MAPPING
• PROGRAMMING your Microcontroller unit to perform the
necessary tasks. enables a microcontroller unit to program itself
according to the present scenario by TRAIN &EXECUTE.
• utilized to determine the end points of the room & automatically
adjusts its path and traces to the door.
• Now it stores the exact coordinate values onto its memory and
traces the path correctly.
• In static mapping,the microcontroller unit is programmed
beforehand.The exact positions of the door, co-ordinates of
the house are fixed. The vehicle automatically moves based
on the patient’s wish.
• But if the place is changed we need to REPROGRAM the
microcontroller.

10. SWITCHING CIRCUIT

11. SWITCHING CIRCUIT
• Directly coupled to the MMU which in turn drives the motor
and the entire Vehicle. When the patient enters in a particular
choice, the appropriate action is performed.
• Can measure
Sugar Level
Heart beat count
Blood pressure
Body temperature
• captured using robotic medical tools which contain suitable
sensors detecting any change from the pre-stored values and
sends them to the system which controls it.

12. RF LINK
• RF Transmitter is made onto a Remote Control
and rendered to the patient.
• RF Receiver present at the Vehicle responds to
the RF Transmitter remote and follows the
Radio Frequency Link path to reach onto the
Remote(RF Transmitter).

13. ADVANTAGES
• Web Servers is to transfer necessary information about the
patients even during the process of transferring the patient
from one room to other.
In our next venture, we would like to include upon ORIGIN
FINDING ALGORITHMS which would dynamically fix upon it’s
origin.
Also we have planned to increase the efficiency of the
system by using VLSI and other mechanisms in our future
endeavors.
Developing Asthra as a Robotic Doctor capable of dynamically
accessing the patients condition and delivering the required
services.
100% user friendly

14. CONCLUSION
• The automated vehicle is aimed towards the welfare of the
disabled. Even though various technologies have been
introduces off late, a few alone are aimed towards
locomotion. Also Patient monitoring is essential is hospitals.
• ASTHRA being a venture which is fully based on locomotion
and automated patient monitoring fulfills this requirement by
rendering an efficient mechanism of locomotion.
• ASTHRA eradicates the necessity for the disabled to be
dependent on others, thereby making them INDEPENDENT.
• ASTHRA makes it possible to handle it upon any given place
under any given circumstances.