Course detail

Optoelectical sensors

FEKT-MOESAcad. year: 2014/2015

Introduction, specification of signals. Development, simultaneity and future.
Light transmision. Light guide and using. Sources, sensors and amplifiers of light signals. Optoelectrical components. Optical sensors. Measurement of physical value. Methods of measure.
The basic concept of OVS and meters, cutting, principles, structure and application examples.Measure systems for data acquisition and postprocessing, sensors systems and local net.
Aplication out of measure technic.

Language of instruction

Czech

Number of ECTS credits

Mode of study

Not applicable.

Guarantor

doc. Ing. Ludvík Bejček, CSc.

Department

Department of Control and Instrumentation (UAMT)

Learning outcomes of the course unit

Students will be able to:
- Get a basic, in good engineering practice to use the knowledge and skills of the fiber sensor and optical fiber sensors
- Discuss basic design concept of the measuring chain
- To determine the optimal method of measurement,
- Define the measured data and
- Describe the process and evaluate the measured results.

Prerequisites

Knowledge is required at the level of bachelor's degree and valid examination for qualifying workers for an independent activity (within the meaning of § 6 of the Decree).
Students will be able to:
- Describe various kinds (types) of photoelectric sensors and fiber,
- Explain the use of modulation in fiber sensors,
- Describe and list the analog and digital optoelectronic and fiber sensors
- Explain interference phenomena and the resulting possibilities
- Discuss and explain various types of interferometers
- Define and calculate the basic building blocks of fiber measurement systems,
- Can measure basic physical quantities using photoelectric and fiber sensors and
- And more.

Co-requisites

Not applicable.

Planned learning activities and teaching methods

Teaching methods depend on the teaching methods are described in Article 7 of the Study and Examination Regulations of the University. Laboratory (numerical) is compulsory, properly excused absences laboratory exercises (maximum of two) can be arranged with the teacher substitute (usually in the credit week).
Techning methods include lectures and practical laboratories. Course is taking advantage of e-learning (Moodle) system. tudents have to write a single project/assignment during the course.

Assesment methods and criteria linked to learning outcomes

The test focuses on the verification of knowledge (orientation) information literacy course. He has written a mandatory laboratory (numeric) and nepovinou oral
Evaluation laboratory 0 - 40
Written part of exam 20 - 50
Oral part of exam 0 - 10

Course curriculum

IIntroduction - definition of the subject, terms. Division frequency (wavelength) bands, signal specification. Historical development, present and future. Typical application examples.
Light propagation (Summary bases), geometrical and wave optics - basic laws dispersion (normal, abnormal, and mean relative), optical imaging. Transmission of radiation environment (s), attenuation (throughput).
Introduction to fiber optics, the conditions for the conduct of optical signals in fibers, classification, properties and requirements for optical fibers and their applications. Development, manufacturing and construction, damping and excitation of optical fibers.
Sources of radiation - the basic values and distribution of the sources, characteristics. LED, LD and SLED - characteristics and applications.
Sensors radiation - basic value, classification, characteristics. Internal and external photoelectric effect. Photoresistors, photodiodes, PIN and avalanche diode.
Optoelectronic components - components of optoelectronic circuits. (No) detachable parts, requirements. Connectors - Types and properties. Switches, combiners and splitters (couplers). Gradient Lens, mixers and separators modes. (De) multiplexers. Measurement of basic parameters of optical fibers.
Optical fiber (fiber optic) sensors (OVS) in automation, basic classification and characteristics, classification (measured value, modulation and structure) classification.
OVS phase, amplitude (intensity), polarization and wavelength change - characteristics, parameters and applications.
Measurement of physical quantities using OVS. Basic measurements of mechanical, electrical, thermal, radiation and chemical variables.

Work placements

Not applicable.

Aims

The aim of the course is to familiarize students with the basics of modern optoelectronic a particularly promising fiber optic sensors of physical quantities, notably in the current industrial automation. Show the importance of fiber sensors and optical networks in automation technology in other fields - such as construction, engineering, health, environment, arts, technology, security, military, etc.
It will also provide an overview of the principles, components, modules and components used in optical networks (especially industrial) and their parameters.
In laboratory practice basic skills needed to work with optical fibers and examples from industrial practice demonstrate the most common measurement of physical quantities.

Specification of controlled education, way of implementation and compensation for absences

Laboratory is compulsory, properly excused absences laboratory exercises (maximum of two) can be arranged with the teacher substitute (usually in the credit week). Specification of controlled education, way of implementation usually provides annual public notice.

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

Leonardo pilot project M1 - M12 "Modular Courses on Modern sensors" Leonardo pilot project 3 – Flow Sensors "Modular Courses on Modern sensors"
SALEH,E.A.-TEICH,M.C.: Základy fotoniky 1 až 4. Matfyzpress Praha, 1990 - 1996. (CS)
TURÁN,J.-PETRÍK,S.: Optické vláknové senzory. Alfa Bratislava 1990 (CS)

Type of course unit

Lecture

39 hod., optionally

Teacher / Lecturer

doc. Ing. Ludvík Bejček, CSc.

Syllabus

Introduction - basic guide, terms. frekvency (wave)bandwith subdivision, specification of signals. Historical development, actuall situation and future. Typical using examples.
Light transmision. Light guide and using. Geometric and wave optics - basic principles, types of dispersion. Types of light transmision in medium
Introduction - light guide, operational conditions for transmision signal by light guide, parameters, requirements and using. Development, construction and design, attenuation and excitation.
Source of light - basic value and distribution of the sources, characteristics, parameters. LED, LD and SLED - parameter and using. Safety regulations.
Sensors of the optical radiation - basic value, distribution, characteristics and parameters. Photoresistor, photodiod, PIN and avalanche diode. Amplifier of optical signal.
Optoelectronical component - single parts of optoelectronical circuits.
Optical light guide sensors (OVS) - using in automation technic, basic distribudion and parameters.
OVS - phase, amplitude, polarization and with change wave lenght - characteristics, parameters and using.
Measuring of physical value by proper and improper OVS. Basic measurement of mechanical, electric, thermo and chemical values. Parameters and comparison.
Measurement method choice. Common measurement string (system), design. Compensation of parasitic efects.
Basic philosophy of sensors. Data acquisition systems (standard, bus), sensor systems, local sensor networks. Actuall situation and future in sensor development.
Conclusion of actuall situation and future. Application out of measurement (optic record, memory devices, consumer, medical and construct engeneering).
Free topic

Laboratory exercise

26 hod., compulsory

Teacher / Lecturer

Ing. Soňa Šedivá, Ph.D.

Syllabus

Introduction - context, equirements, work safety.
Basic operation with optic fibres:cutting, fibre end dressing, bonding, conector sitting, etc.
Source of light - LED, LD - parameter and using. Energy output measurement, deflection. real media efekt to emission transmision (temperature, dustiness). Measurement of LED characteristics, findings of parasitic efects.
OVS position - types, descriptions, using a) proportional in range 0 to 100 mm b) two-valued in range 0 to 10 m Material efects and efects of surface of reflex area. sensing of cource and minimal area for distance and emision source. Speed, vibration and stress measurement.
Temperature OVS - types (refractometric, dilatancy), descriptions and test in range 0 to 70 oC. Measurent characteristics output signal to teperature for different wavelength of emission source, time constants, linerity and hysteresis of sensors
Presure OVS - Characteristics measurement of output signal to presure (reflex and locking, V-types), conversion linearity, hysteresis and parasitic effects.
Instrumentation. Optic inhibition meters, emission sources, meauring instrument OMS 3, software for measurement of optic energy output, inhibition and ORTD.
characteristic mesurement of material inhibition and permeability to wavelength. Findings of UV light suppression effectivity.
Optoelectical sensors using in mechanical engineering
Design of optic emission sourse
Design of optoelectrical sensors (amplifiers)
Design of measuring string layout, data acquisition
Free topic

VUT

Faculties

University Institutes

Parts

Optoelectical sensors

Type of course unit