this is my minor project ppt

1. Shri Vaishnav Institute of Technology
and Science
MINOR PROJECT
“FORCE MEASUREMENT DEVICE”
GUIDED BY -
MISS KUSUM TILKAR
PREPARED BY -
SHIVANI KUSHWAH
(0802EI141037)

2.  INTRODUCTION
 COMPONENTS
 THEORY
 WORKING
 ADVANTAGES & DISADVANTAGES
 APPLICATIONS
 FUTURE SCOPE

3. A force measuring device is a small measuring instrument used across all
industries to measure the force during a push or pull test .
applications exist in research and development, laboratory, quality,
production and field environment.

4. 1) FORCE SENSITIVE RESISTOR
:-SPECIFICATIONS
 Range: up to 150Kg (depends on the type)
 Response Time: <1.2ms
 Consumption: ~0.4mA

5. FSR voltage divider
For a simple force-to-voltage conversion, the FSR device is tied to
measuring resistor in a voltage divider configuration. The output is
described by the equation:

6.  Vo = Vcc ( R / (R + FSR) )
the output voltage increases with increasing force. If RFSR and RM are swapped, the
output swing will decrease with increasing force.
2) Arduino uno ATmega328
:- FEATURES
 Advanced RISC Architecture
 I/O and Packages
 Operating Voltage:– 1.8 - 5.5V
 Power Consumption at 1MHz, 1.8V, 25°C
 Speed Grade:– 0 - 4MHz @ 1.8 - 5.5V, 0 - 10MHz @ 2.7 - 5.5V, 0 - 20MHz @ 4.5 -
5.5V

7. Arduino ATmega328

8. LCD DISPLAY (Pin Assignment ):-

9. 4) Resistors:-
2.2k,1kk,10k,10k(pulldown resistore)
5) Wires:-
Jumpers wires(male to female,male to male ) and hookup wires use.
6) Pin header:-
Pin headers are often associated with ribbon cableconnectors

10. 7) Transistor(BC 547):-
 amplifer transistor
 Collector emitter volt :4-5
 Collector current :0.1A
 Power dissipation 625mW
 Current gain bandwidth :300Mhz
 Type:NPN

11. 8)Relay :-
MAIN FEATURES
 Selection of plastic material for high temperature and
better chemical solution performance.
I. Sealed types
II. available.
 Simple relay magnetic circuit to meet low cost of
mass production.

12.  We are using relay circuit with the transistor
as a switch, because we can not give 5 volt
power supply to the arduino & we connect
digitals pin of arduino with lcd display for
display measuring force.

14.  Read analog value from fsrsensor
::value =analogRead(sensorPin);
 Map analog values 0-1023 to PWMvalues 0-5000
::value = map (value,0,1023,0,5000)
 Send pwm value to LCDdiaplay
::analogWrite(LcdPin,value)

15. Advantages of fmd
i. Low cost
ii. Small size
iii. Highly sensitive to force
Disadvantages of fmd
i. Low accuracy

16.  Reaction time measurement
 Musical instruments
 Computer input device
 Industrial applications
 Robotics fingertips
 Medical applications
 Sports

17.  Automatic air chacker
 Biomedical.
 Etc.....