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ULTRASONIC RANGE FINDER

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ULTRASONIC RANGE FINDER. AMITHASH .E. PRASAD. ARUNDATHI .B.S. BHUVANESHWARI .G. SUSHMA .M ... To design a handy device for non-contact measurement of distance. ... – PowerPoint PPT presentation

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Title: ULTRASONIC RANGE FINDER


1
ULTRASONIC RANGE FINDER
  • AMITHASH .E. PRASAD
  • ARUNDATHI .B.S.
  • BHUVANESHWARI .G
  • SUSHMA .M

2
AIM OF THE PROJECT
  • NON CONTACT MEASUREMENT OF
  • DISTANCE OF AN OBJECT USING
  • ULTRASOUND

3
OBJECTIVES OF THE PROJECT
  • To design a handy device for non-contact
    measurement of distance.
  • For measurement of shorter distances only.
  • Using a microcontroller for better
    understanding of its functioning.
  • Less cost manufacture.

4
ULTRASOUND ???
  • These are waves of frequency greater than 20KHz.
  • They travel with velocity of sound.
  • Because of shorter wave length they travel as
    sharp beam.
  • They undergo reflection.

5
BLOCK DIAGRAM
6
INTERNAL STRUCTURE OF ULTRASONIC TRANSDUCER
7

TRANSMITTER
8
TRANSMITTER
9
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10
RECEIVER
11
OPERATIONAL AMPLIFIERS
12
ENVELOPE DETECTOR
13
COMPARATOR
0.4V
14
SIGNAL HOLD CIRCUIT
CCP
15
1.5ms
RA5 enable output pin goes high
16
PIC LED INTERFACE
17
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18
(No Transcript)
19
PROCESS EXPLANATION
20
FLOW CHART
21
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22
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23
CAPTURE PROCESS
24
THE LED DISPLAY
7 SEGMENT COMMON ANODE
25
LED INTERFACE
26
APPLICATIONS
  • Robotics Automation
  • Car backing System
  • Exploration

27
FURTHER DEVELOPMENT
  • Assistance for the blind
  • Velocity meter
  • Long range and short range mode selection.
  • PC interface.
  • Periphery mapper.
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