ppt slides for engineering physics for all topics and etc

1. Use of Accelerometer Sensor In Robotics
Sanjivani Rural Education Society's
SANJIVANI COLLEGE OF ENGINEERING
(An Autonomous Institute)
Affiliated to SPPU,Pune.
Guided By:- Prof. Dr. B.R.Shinde
Presented By:-
Sanket Nirgude
Tejas Nikam
Ritesh pagare

2. INTRODUCTION
CONTENTS
ACCELEROMETER
HOW ITS WORK
WORKING PRINCIPLE
ADVANTAGES AND DISADVANTAGES
SPECIFICATION AND USES

3. We all play games on our smartphones where you need to use
landscape mode or some apps which need portrait mode,our ph
ones automatically change to the need.Why does it happen? Or
what causes it to happen? Well to answer that question, and acc
elerometer comes into the picture.The primary function of the a
ccelerometer in mobile phones is to modify the orientation of the
device from horizontal to vertical and vice versa.
INTRODUCTION

4. ACCELEROMETER

5. ACCELEROMETER
• An electromechanical instrument for mea
suring acceleration forces js called the A
ccelerometer.These forces could be statio
nary,like the constant pull of gravitya,or d
yanamic,like in the case of many mobile
gadets,to detect motion or vibrations.
• Fundamentally speaking ,acceleration is
the change in velocity over pre dertermin
ed period of time.If we knowThe distance
traveled and the time required,we may ca
lculate the speed of given body
ACCELEROMETER

6. HOW ITS WORK.

7. How does an accelerometer work?
An accelerometer works using an
electromechanical sensor that is d
esigned to measure either static or
dynamic acceleration. Static accele
ration is the constant force acting
on a body, like gravity or friction. T
hese forces are predictable and un
iform to a large extend. For examp
le, the acceleration due to gravity i
s constant at 9.8m/s, and the gravi
tation force is almost the same at
every point on earth.
https://youtu.be/ObXspXB9sJI
Dynamic acceleration forces are n
on-uniform, and the best example
is vibration or shock. A car crash i
s an excellent example of dynamic
acceleration. Here, the acceleratio
n change is sudden when compar
ed to its previous state. The theor
y behind accelerometers is that th
ey can detect acceleration and co
nvert it into measurable quantitie
s like electrical signals.

8. WORING PRINCIPLE

9. • The below circuit diagram depicts the popular acceleromet
er in usage- ADXL335

10. • Accelerometer Working Principle
•
• An accelerometer’s main functional requirement is that it converts mechanical energy int
o electrical energy. When a mass that is actually like a spring is placed on the sensor, it st
arts to descend at that point. It has an acceleration since it is descending. This acceleratio
n then transforms into a measurement of the electric signal, which is used to calculate th
e range in the position of the device. Both the simple structures and the programmed str
uctural gadgets can both be found with an accelerometer. It comes in both analog and di
gital forms.
•
• Even while it appears to be a simple circuit for a bigger electronic device, it actually has m
any distinct sorts of parts, each of which has its own functions and operates in a variety o
f ways. The two most popular words would be the capacitance sensor in capacitors and t
he piezoelectric effect. The most prevalent type, known as the piezoelectric effect, uses
microscopic crystal structures that are stressed by acceleration forces. These internal stre
sses cause the crystals to produce voltages, which are then interpreted by an accelerome
ter to measure the motion’s velocity and orientation.

11. ADVANTAGES AND DISADVANTAGES.

12. • It does not measure a constant
velocity.
• An Accelerometer can not meas
ure rotation around its own axis
of movement.
• It is sensitive to temperature an
d operates over limited temper
ature range.
☆ DISADVANTAGES
• It has High Impedence.
• It offers Higher Sensitivity.
• It has High Frequency response.
• It is simple to interface and ruged in des
ign.
• It is available at lower cost due to advan
cement in MEMS Technology.
• It uses built-in signal conditioning
circuit to measure capacitance.
☆ ADVANTAGES

13. SPECIFICATIONS

14. ☆ SPECIFICATION
• Bandwidth, or frequency response, is the most important parameter in accelero
meter selection. You won't get accurate results if the bandwidth of the accelero
meter doesn't include the frequency of the motion, vibration, or shock you are h
oping to measure.

15. USES OF ACCELEROMETER

16. • Uses of Accelerometer.
•
• The common uses of accelerometer are:
•
• Accelerometers that have a high sensitivity are utilized in inertial navigation systems.
• To recognise and keep an eye on rotating machinery vibrations.
• To have photographs shown on digital camera screens in an upright orientation.
• For drone flight stabilization.
• Accelerometers are used to measure acceleration, shock, vibration, and orientation.
• Used by laptops and mobile devices to determine the device’s location.
• Biaxial and triaxial acceleration at high frequencies are recorded in biological applications to d
istinguish between animal behavioral patterns.
• Checking the health of the equipment.
• To find rotator machine issues.
• These are also employed in structural and building monitoring to track the movement and vib
ration of the building under dynamic loads.
• To evaluate the depth of chest compressions during CPR.
• Accelerometer sensors are used by navigation systems to determine direction.

17. THANK YOU