This presentation provides an overview of optical sensors, including their introduction, working principles, classification, applications, and future trends. Optical sensors are classified as either extrinsic or intrinsic based on whether the light interacts with the measurand inside or outside of the optical fiber. They have a wide range of applications in areas such as temperature, chemical concentration, strain, biomedical, and more. The presentation concludes that optical sensor technology will continue to improve and be an important area of research going forward.
This Presentation provides some basics of Sensors Technology.........
It gives few ideas to learn about sensors which are as normally used as electrical & electronics applications.......
This article provides an introduction to the fundamental of Sensors and Transducers. It illustrates the different classifications of sensors and transducers. Explains capacitive, resistive and inductive transducers in brief. Also shows the examples under these types of transducers.
This Presentation provides some basics of Sensors Technology.........
It gives few ideas to learn about sensors which are as normally used as electrical & electronics applications.......
This article provides an introduction to the fundamental of Sensors and Transducers. It illustrates the different classifications of sensors and transducers. Explains capacitive, resistive and inductive transducers in brief. Also shows the examples under these types of transducers.
Microelectromechanical Systems (MEMS) are miniature devices comprising of integrated mechanical (levers, springs, deformable membranes, vibrating structures, etc.) and electrical (resistors, capacitors, inductors, etc.) components designed to work in concert to sense and report on the physical properties of their immediate or local environment, or, when signaled to do so, to perform some kind of controlled physical interaction or actuation with their immediate or local environment
A sensor is a device that detects and responds to some type of input from the physical environment.
The specific input could be light, heat, motion, moisture, pressure, or any one of a great number of other environmental phenomena.
The output is generally a signal that is converted to human-readable display at the sensor location or transmitted electronically over a network for reading or further processing.
Sensors are at the core of every modern invention.
In these couple of slides I describe a couple of them and how they are connected to microcontroller pins.
The sensor is a transducer used to make a measurement of the physical variable. The transducer is a device that converts one type of physical variable into another form. The sensor is used to collect information about the status of manipulator and end effectors with respect to the object.
This discussion of the operating principles of capacitive, resisitive, and thermal conductivity humidity sensors also addresses their advantages, disadvantages, and applications.
Microelectromechanical Systems (MEMS) are miniature devices comprising of integrated mechanical (levers, springs, deformable membranes, vibrating structures, etc.) and electrical (resistors, capacitors, inductors, etc.) components designed to work in concert to sense and report on the physical properties of their immediate or local environment, or, when signaled to do so, to perform some kind of controlled physical interaction or actuation with their immediate or local environment
A sensor is a device that detects and responds to some type of input from the physical environment.
The specific input could be light, heat, motion, moisture, pressure, or any one of a great number of other environmental phenomena.
The output is generally a signal that is converted to human-readable display at the sensor location or transmitted electronically over a network for reading or further processing.
Sensors are at the core of every modern invention.
In these couple of slides I describe a couple of them and how they are connected to microcontroller pins.
The sensor is a transducer used to make a measurement of the physical variable. The transducer is a device that converts one type of physical variable into another form. The sensor is used to collect information about the status of manipulator and end effectors with respect to the object.
This discussion of the operating principles of capacitive, resisitive, and thermal conductivity humidity sensors also addresses their advantages, disadvantages, and applications.
www.envimart.vn - ĐT: 028 77727979 - sales@envimart.vn - Nền tảng cung cấp thiết bị, vật tư ngành nước và môi trường. Chuyên cung cấp vật tư cho dự án xử lý nước sạch, nước thải và môi trường. Envimart luôn đồng hành, tin cậy với đối tác nhà thầu, nhà tích hợp và người sử dụng.
We currently live in the world of sensors. From our Smart phone to emergency fire alarms, sensors plays an major role. It is a device that converts signals from one energy
domain to electrical domain.
Here, let us the see the working of different types of sensors in Food Industries.
International Journal of Engineering Research and DevelopmentIJERD Editor
Electrical, Electronics and Computer Engineering,
Information Engineering and Technology,
Mechanical, Industrial and Manufacturing Engineering,
Automation and Mechatronics Engineering,
Material and Chemical Engineering,
Civil and Architecture Engineering,
Biotechnology and Bio Engineering,
Environmental Engineering,
Petroleum and Mining Engineering,
Marine and Agriculture engineering,
Aerospace Engineering.
Zigbee based intelligent helemet for coal miners pptVenkatesh Kaduru
This one is the useful project for embedded students..and it is the real time project ...
so guys u can download and implement with your useful thoughts ...
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
2. TOPICS INCLUDED IN THIS
PRESENTATION
INTRODUCTION
OPTICAL
SENSORS
PRINCIPLE OF SENSORS
CLASSIFICATION AND COMPARISON
SOME INTERESTING APPLICATIONS
CHRONOLOGY
CONCLUSION
2
3. SENSOR INTRODUCTION
A sensor is a device that produces a measurable
response to a change in a physical condition,
such as temperature or thermal conductivity, or
to a change in chemical concentration. Sensors
are particularly useful for making in-situ
measurements such as in industrial process
control.
Sensors are responsible for converting some
type of physical phenomenon into a quantity
measurable by a data acquisition (DAQ) system.
3
4. OPTICAL SENSOR
INTRODUCTION
NEW
REVOLUTION OF OPTICAL
FIBER SENSORS
IT IS A “SPIN-OFF” FROM OTHER
OPTICAL TECHNOLOGIES
SEEING THE POTENTIAL IN
SENSING APPLICATIONS –
DEVELOPED AS ITS OWN FIELD
4
9. INTRINSIC SENSORS
INTRINSIC SENSORS ARE DIFFERENT IN THAT THE
LIGHT BEAM DOES NOT LEAVE THE OPTICAL FIBER
BUT IS CHANGED WHILST STILL CONTAINED WITHIN IT.
9
10. COMPARISON OF THE TWO TYPES
EXTRINSIC
INTRINSIC
APPLICATIONS-
APPLICATIONS-
TEMPERATURE,
PRESSURE,LIQUID
LEVEL AND FLOW.
ROTATION,
ACCELERATION, STRAIN,
ACOUSTIC PRESSURE
AND VIBRATION.
MORE SENSITIVE
TOUGHER TO
MULTIPLEX
REDUCES CONNECTION
PROBLEMS
MORE ELABORATE
SIGNAL DEMODULATION
MORE EXPENSIVE
LESS
SENSITIVE
EASILY MULTIPLEXED
INGRESS/ EGRESS
CONNECTION
PROBLEMS
EASIER TO USE
LESS EXPENSIVE
10
11. Types of Optical Sensors
Chemical/Gas Concentration
Temperature
Strain
Biomedical
Electric & Magnetic Fields
Rotation
Pressure
Displacement &Position
11
13. Chemical/Gas Sensor Types and
Applications.
Sensor
type
Detectable
gases
Usable
range
Pro's
Con's
ppm levels
3 year lifetime
slightly lower at
Low power, accurate,
high temps; some
repeatable
types are crosssensitive
Flammables
LEL levels
Can be damaged by
Generally good in all high levels of H2S,
ways; portable
but poison resistant
types are available
Infrared
Flammables and CO2
0.1 (or less) to
100% by volume
Fail safe; generally
excellent
Thermal
Conductivity
Many, at % levels,
including binary
mixtures
% levels
20 year life (at least);
Only appropriate for
stable; can detect
certain gases
inert gases
Electrochemical
Pellistor
Toxics, oxygen
Expensive (but
getting cheaper);
non-portable
13
15. TYPES OF TEMPERATURE
SENSORS
Thermocouples
Thermistors
Radiation
Pyrometer
Radiation Thermometers
Resistance Temperature Detectors
Fiber Optic Temperature Sensors
Silicon Temperature Sensors
15
16. APPLICATIONS
HVAC - room, duct, and refrigerant
equipment
Motors - overload protection
Electronic circuits - semiconductor protection
Electronic assemblies - thermal management,
temperature compensation
Process control - temperature regulation
Automotive - air and oil temperature
Appliances - heating and cooling temperature
16
17. STRAIN SENSORS
FIBER
BRAGG GRATINGS (FBG)
TECHNOLOGY
SENSES AS LITTLE AS 9
MICROSTRAIN
NRL and UNITED TECHNOLOGY
RESEARCH
17
19. ELECTRICAL AND MAGNETIC
SENSORS
APPEALING-
INHERENT DIELECTRIC
NATURE
LESS SENSITIVE TO
ELECTROMAGNETIC INTERFERENCE
SMALL SIZE AND SAFER
THEY ARE ALMOST ALWAYS HYBRID
ABB CORPORATION RESEARCH
CENTER
19
20. APPLICATION
Compassing
and navigation
Vehicle Detection
Virtual Reality
Laboratory Instrumentation
a Medical Instruments
Underground Boring Equipment
Flux Gate Replacement
20
21. ROTATION SENSOR
BASED
ON THE SAGNAC EFFECT
TWO TYPES RING LASER
GYROSCOPE (RLG) AND FIBER
OPTIC GYROSCOPE (FOG)
US COMPANIES PURSUING HIGH
PERFORMANCE FOG’s
(HONEYWELL, LITTON, NORTHRUP,
ALLIED SIGNAL etc.)
21
22. PRESSURE SENSORS
EARLIER
BASED ON
PIEZORESISTIVE TECHNIQUE
BASED ON MOVABLE DIAPHRAGM
HIGH PERFORMANCE(POLARIZATION BASED SENSORS)
OPERATING PRESSURE RANGES
FROM 0-70,000 torr
22
23. DISPLACEMENT AND
POSITION SENSORS
ONE
OF THE FIRST
OPTOELECTRONIC SENSORS TO BE
DEVELOPED.
SIMPLE SENSORS RELY ON THE
CHANGE IN RETROREFLECTANCE
DUE TO A PROXIMAL MIRROR
SURFACE
ALSO REFERRED AS LIQUID LEVEL
SENSORS
23
24. WHY OPTICAL SENSORS
ELECTROMAGNETIC
IMMUNITY
ELECTRICAL ISOLATION
COMPACT AND LIGHT
BOTH POINT AND DISTRIBUTED
CONFIGURATION
WIDE DYNAMIC RANGE
AMENABLE TO MULTIPLEXING
24
25. APPLICATIONS
MILITARY AND LAW ENFORCEMENT
THIS SENSOR ENABLES LOW LIGHT IMAGING AT TV FRAME
RATES AND ABOVE WITHOUT THE LIMITATIONS OF VACUM TUBE
BASED SYSTEMS.
25
26. NIGHT VISION CAMERA (contd.)
COMPRISES OF :
AMPLIFIED CCD SENSOR
ANTI BLOOMING TECHNOLOGY
CRYSTAL POLYMER SHUTTER
ADVANTAGES :
EXCEPTIONAL DAY LIGHT RESOLN.
IMMUNE TO OVER EXPOSURE
VERY HIGH CONTARAST LEVELS
NO HALOING OR SCINTILLATIONS
26
27. BIOMETRICS
YOUR FACE, FINGERS AND EYES IN A WHOLE
NEW LIGHT
• IMAGE CAPTURE
• IMAGE PROCESSING
• FEATURE EXTRACTION
• FEATURE COMPARISON
27
28. PARTIAL DISCHARGE DETECTION
USES OPTICAL FIBER SENSORS
OPTICAL FIBER SENSORS ARE BEING TESTED FOR USE
IN DETECTING PARTIAL DISCHARGES IN ELECTRICAL
TRANSFORMERS. PINPOINTING SUCH DISCHARGES IS
ESSENTIAL TO PREVENTING INSULATION BREAKDOWN
AND CATASTROPHIC FAILURES.
28
29. CONCLUSIONS
LOOKING AT THE INDUSTRY
TRENDS IN THE PAST 2 DECADES
AND THE EXPONENTIAL CURVE IT
SEEMS TO ME THAT THERE IS
GOING TO BE A LOT OF RESEARCH
AND IMPROVEMENTS TO THE
EXISTING SENSORS
OPTICAL SENSORS ARE HERE TO
STAY !!!!
29
30. THANK YOU FOR YOUR
PATIENCE AND TIME
QUESTIONS ??
30
