Important: Use custom search function to get better results from our thousands of pages

Use " " for compulsory search eg:"electronics seminar" , use -" " for filter something eg: "electronics seminar" -"/tag/" (used for exclude results from tag pages)

Ask More Info Of  A Seminar Ask More Info Of A Project Post Reply  Follow us on Twitter
17-01-2013, 04:33 PM
Post: #1


.ppt  BASIC SENSOR.ppt (Size: 6.33 MB / Downloads: 248)

Objectives of ST120

With the fast paced industrial world looking for ways to manufacture products better, faster and more economically, it is important to be knowledgeable of sensor technologies.
This class is designed to give you a fundamental understanding and working knowledge of different sensor technologies. We will achieve this through the study of sensor technologies, terminology explanations, lab exercises and application examples.

What Is a Sensor

According to Merriam-Webster's dictionary, it’s a device that responds to a physical stimulus and transmits a resulting impulse.

Advantages of Electronic Sensors

Wear and tear is kept to a minimum
A must for fragile equipment
Odd shapes (not a problem)
Last a long time (Solid State)
A mechanical switch has a definite life span
Few maintenance problems
Longer/better reliability

Detector Circuit

The Detector Circuit converts the
amplitude of the oscillating signal to a
DC RMS level from which the ON and
OFF thresholds are used to trigger the
output circuit.

Shielded and Unshielded

“Shielded” and “Unshielded” are two terms used to describe these sensors. The basic difference in these two types arrive from their mechanical construction.
In general, these two construction styles yield slightly different sensing performances. In summary, the unshielded style will provide approximately twice the sensing distances with an inherent drawback of specific mounting and installations requirements.

Capacitive Proximity Sensors

A Capacitive Proximity sensor is similar to an inductive sensor in that it has a Oscillator, Detector and Output circuit. It differs in that it uses a plate shaped Electrode instead of a wire-wound core. In operation, it forms an electrostatic capacitive field formed between it and the the sensors ground. (In practice the supply line is in effect the ground.)

Dielectric Constants

The measure, or unit of Dielectric Constant, is the ability of a material to concentrate electrical flux. Its numerical value is specified as the ratio of flux in the material verses the flux in air or vacuum. The dielectric constant of air or vacuum is 1 – since it is the reference.

Possible Problems

Even though color and shape do not affect this sensor type, the sheen or glossiness of the item may have an adverse affect. If the object is extremely shiny, or highly reflective, it could reflect more light back to the receiver than the reflector does on its own. It this case the object could/would pass by undetected. As a commonly found issue, there is a solution for these applications.

Diffuse Reflective – Lab Exercise

Hook up the sensor and verify its operation by placing your hand in front of the sensor to activate the output.
Set the sensitivity of the sensor to its maximum setting. Position a piece of the colored paper in front of the sensor and slowly back it away to find the maximum sensing distance. Repeat this process for each test piece and document your results.


Modulating an LED means turning it on and off at a set frequency. This is generally done at high frequency with short bursts of voltage. By applying power in this manor the circuit is able to generate a very high intensity light at a certain spectrum. Because the LED is not on continuously it does not suffer from the adverse affects of heat.
Share BASIC SENSOR THEORY & OPERATION PPT To Your Friends :- Seminar Topics Bookmark
Post Reply 

Marked Categories : proximity sensor basic theory of operations, basic operations of led ppt, theory of operation sensors ppt, sensor theory, basic knowledge of sensors ppt, sensors basic ppt, sensor types operation ppt, electronic sensors ppt, sensor theory ppt, sensors ppt, basic sensor theory operation ppt, application of heat sensor ppt, ppt of bsic of eletronic, theory based seminnar topic ppt, basic theories for satellite sensors, basic sensor ppt, basic sensor theory,

Quick Reply
Type your reply to this message here.

Image Verification
Image Verification
(case insensitive)
Please enter the text within the image on the left in to the text box below. This process is used to prevent automated posts.

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  BLUETOOYH BASED SMART SENSOR NETWORKS mkaasees 0 0 01-11-2016 10:49 AM
Last Post: mkaasees
  BLUETOOYH BASED SMART SENSOR NETWORKS mkaasees 0 0 01-11-2016 10:05 AM
Last Post: mkaasees
  HEARTBEAT SENSOR seminar surveyer 3 3,833 28-10-2016 11:41 AM
Last Post: jaseela123
  DEVELOPMENT OF ROAD LIGHT GATEWAY WITH SENSOR NETWORK seminar ideas 2 1,304 23-06-2016 01:12 PM
Last Post: dhanabhagya
  universal current sensor full report project report tiger 17 17,877 31-03-2016 09:52 AM
Last Post: mkaasees
  Electro Magnetic Field Theory dhanabhagya 0 205 28-01-2016 12:25 PM
Last Post: dhanabhagya
  A Basic Touch-Sensor Screen System presentation Abstract 0 230 19-05-2015 03:23 PM
Last Post: presentation Abstract
  Bluetooth Based Smart Sensor Networks presentation Abstract 0 225 18-05-2015 03:14 PM
Last Post: presentation Abstract
  Bluetooth Based Smart Sensor presentation Abstract 0 149 13-05-2015 03:15 PM
Last Post: presentation Abstract
  INFRARED SENSOR ppt seminar tips 1 4,980 13-03-2015 12:09 PM
Last Post: Guest
This Page May Contain What is BASIC SENSOR THEORY & OPERATION PPT And Latest Information/News About BASIC SENSOR THEORY & OPERATION PPT,If Not ...Use Search to get more info about BASIC SENSOR THEORY & OPERATION PPT Or Ask Here