smart sensor

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Sarvajanik College of Engineering and Technology :

Sarvajanik College of Engineering and Technology Smart Sensors Prepared by Surti Snehal(04) Kapadia Arpeet(08) Shah Dharam(09) Jariwala Jenish (25) Agrawal Saket (62) (5th semester, Electronics & communication)

Smart sensors :

Smart sensors A smart sensor is simply one that acquires physical, biological or chemical input, converts the measured value into a digital format in the units of the measured attribute and transmits that measured information via the Ethernet to a computer monitoring point Various types of smart sensors are: Optical sensor Infrared detector array Accelerometer Integrated multisensor Ultrasonic distance detector.

Slide 3:

Various types of Application 1. Bluetooth Smart Sensor Module Rear Panel 2. In-chamber and on-wafer sensors. 3. Monitoring of Temperature Using Smart Sensors Based on CAN Architecture. 4. Compatible sensors with microprocessors. 5. Smart sensors vie for vision applications : smart sensors can provide the functionality needed for simple, low-cost machine- vision applications. 6. A Smart Sensor Architecture for Marine Sensor Networks

Principle of Ultrasonic Testing:

Principle of Ultrasonic Testing By measuring the difference in time between the pulse being transmitted and the echo being received, it is possible to determine how far away the object is.

Slide 6:

Using this measurement and the speed of sound in air, you can make your program calculate the object's distance in centimeters, inches, feet, etc.

Slide 7:

Sensor Elevation: 40 in. (101.6 cm) Target: 12 in. x 12 in. (30.5 cm x 30.5 cm) cardboard, mounted on 1 in. (2.5 cm) pole Target positioned parallel to backplane of sensor

Ultrasonic Transmitter Circuit :

Ultrasonic Transmitter Circuit

Ultrasonic Receiver Circuit :

Ultrasonic Receiver Circuit

ULTRASONIC DISTANCE DETECTION :

ULTRASONIC DISTANCE DETECTION Features Dimensions Pin Definitions

Features:

Features • Supply Voltage – 5 VDC • Supply Current – 30 mA typ ; 35 mA max • Range – 3 cm to 3.3 m (0.8 in to 3.3 yrds ) • Input Trigger – positive TTL pulse, 2 uS min, 5 μ s typ. • Echo Pulse – positive TTL pulse, 115 uS to 18.5 ms • Echo Hold-off – 750 μ s from fall of Trigger pulse • Burst Frequency – 40 kHz for 200 μ s • Burst Indicator LED shows sensor activity • Delay before next measurement – 200 μ s • Size – 22 mm H x 46 mm W x 16 mm D (0.84 in x 1.8 in x 0.6 in)

Dimensions:

Dimensions

Dimensions:

Dimensions

Pin Definitions:

Pin Definitions

  ADVANTAGES :

ADVANTAGES F ast and reliable method L ow cost and high speed of operation. Can work in adverse conditions N ot affected by target colour or atmospheric dust, snow, rain..etc The targets can be in the solid, liquid , powder state N o friction and wear L ocating flaws with metal objects is more sensitive than radiography

Limitation :

Limitation (1)Skilled & Trained Operator is required (2)Distances over 3 meters (3)Shallow angles (4)Objects that are too small.

CONCLUSION :

CONCLUSION Ultrasonic Sensors significantly reduces the number and lengths of cables, the components size, and system weight. It provides greater flexibility in design, configuration and installation. All of these advantages translate into cost savings throughout the life of a program.

Slide 19:

Thank You