16
Date of IssueApproved
WORLDSKILLS QUALITY ASSURANCE STANDARD
Technical Description – Industrial Electronics
Document No.
TD16Revision
1
WorldSkills (International Vocational Training Organisation), by a resolution of theTechnical Committee and in accordance with the Constitution, the Standing Orders and theCompetition Rules, has adopted the following minimum requirements for trade No. 16 forthe WorldSkills Competition:
The effective date will be that date on which this document is issued, subject to approval bythe Chairman of the Technical Committee.1
Name and description of trade1.11.2
The name of the trade is:Industrial Electronics
The Industrial Electronics Technician works in industrial or commercialenvironments and works with or studies electronics. This includes:
- development- construction- design- measuring- testing- repairThis technical description must be known to every candidate.
In the event of any query or conflict within the technical descriptions, the Englishcopy will take precedence
Words implying masculine gender only shall include the feminine gender
1.31.41.5
2
Scope of work at WorldSkills Competitions2.1The practical work will test the competitors ability to:
- assemble, adjust, commission, measure and test electronic equipment- carry out and document measurements on analogue and digital circuits- locate, document and repair faults in a given circuit
- design or refine a design of a circuit, and construct using prototype
construction techniques2.22.3
To solve theoretical tasks using mathematical and graphical methods to aTechnician Level
To redraw a circuit drawing schematic with Computer Aided Design.Competitors must bring their own laptop and software of their choice.
Page 1 of 17
3Competition Format for Practical Work3.1
3.2
3.3
3.4
3.53.6
Page 2 of 17
Assembling
Assemble a project that has to be from a kit of parts to the IPC-A-610 issue Cinternational acceptability of electronic assemblies. (Web pageWWW.solder.net/main/ipca/htm. Each project should be able to fit a Euro cardstandard using DIN 41612 F64 or F32 connectors, that will fit a standard backplane connector. Power points will be as follows: -A1C1+5v DigitalA2C2Digital GroundA15+5v AnalogC15+12v AnalogA16C16Analog groundA17-5v AnalogC17-12v AnalogA31C31Digital GroundA32C32+5v DigitalMeasuring and Testing
To work with conventional measuring and testing equipment for AC, DC, digital
and analog electronics. To test, set, adjust and measure electronic components,modules and equipment. To record and analyse measured results. Boards willbe pre-built before the competition.
Fault Finding and Repair
To test, locate and replace faulty electronic components on a printed circuitboard, surface mount board or mixed technology board. All surface mountcomponents to have no more than four pins and Fault finding method/procedurewith results will be required. All boards will be pre-built before the competition.Each board will have at least three faults. Pin configurations and power supplywill be as 3.0.
Competitors may bring their own measurement instruments.
Prototype Design
To carry out a simple electronic design using given components to meet a givenspecification. Printed circuit boards should be pre-built. Resistors E24 series,0.25 watt to be available from host country. No more than 15 wire wrapconnections and no more 15 point to point connections will be required on thismodule. Pin configurations and power supply will be as 3.0.Competitors may bring their own measurement instruments.
The competition is modular and will be marked at the end of every module.Time allowed for each module is as follows:
Theory2 hoursDrawing2 hoursPrototype4 hoursFault Finding4 hoursMeasurement4 hoursAssembly Project
3 + 3 hours
4Theoretical Knowledge4.14.1.1
4.1.2
4.1.3
4.1.4
4.1.5
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To solve theoretical problems, using mathematical and graphical methods basedon the following:
Fundamental electronic principles:
1. Basics of AC and DC technology.
2. Two ports LRC networks, resistive networks with up to three meshes.3. RC oscillators.Components in Electronics:
Properties, behaviour, characteristics and application (elementary circuits) ofmechanically, electrically and physically adjustable components i.e.:
- Resistors- Capacitors- Coils
- Transformers
- Diodes: rectifying diodes, switch diodes, zener diodes, capacitive diodes,
PIN diodes
- Trigger components: diac, triac, thyristor and uni-junction transistors.
Multistage and special amplifier circuits:
Basic amplifier circuits (AC, DC and power amplifiers)
Differential amplifiers/operational amplifiers.
1. Ideal operational amplifier: (infinite input resistance, zero output
resistance and infinite open loop grain) Basic circuits with operationalamplifier, analogue adder and subtractor, differentiator, comparator,impedance transducer.
2. Real operational amplifier: Offset voltage and offset current,
compensation, common mode gain and rejection, temperature drift,frequency response.
Generators and Pulse shapers:
1. Generators for sine wave voltage: RC, quartz, LC oscillator; wien bridge
generator, phase generator.
2. Pulse shaper: Schmitt trigger, differentiator, integrator.Digital Electronics
1. Basic logic gates.
2. Level switching function, function table, pulse, diagram, circuit symbols
(table in appendix).
3. Properties of basic gates AND, OR, NOT, NAND, NOR, EXCLUSIVE OR
EXCLUSIVE NOR.
4. Substituting basic NAND or NOR gates for basic gates.
5. Creating switching functions from given circuits and vice versa.
6. Making function table from circuit diagrams and switching functions.
7. Simplifying switching networks using Karnaugh diagram or mathematical
techniques.
8. Flip-flops; RS Flip-flop, D Flip-flop, JK Master slave Flip-flop (especially
counter circuits, shift register and frequency divider).
9. Memory circuits, selection, addressing, and memory decoding volume.
5Materials5.1
Components
The workshop master must ensure that the materials provided are completed,packed in bags and checked also for the power supply project, and range of E24,0.25w resistors from 10 ohm to 10 megohms is supplied. The host country willalso supply the back plane as per drawing –
Refer Document 4.3/PD16 – Project Design Criteria
5.2
Other materials
1. Graph paper A3 size2. Solder 60/40 type
3. Approx. 5m bare wire (0.5mm diameter) per competitor
4. Approx. 5m each of insulated wire (or standard wire) in five different
colours for each competitor5. Binding/insulation tape
6. Lacing string /Tie raps/heat shrink sleeving7. Hot-air fan for heat-shrink tubingClothing
Work clothes must comply with relevant safety standards. Safety standardsrequire a minimum of safety glasses and covered footwear.
5.5
6Workshop Installations6.16.2
The working area should provide enough space for the competitors, experts(jury), measurement and repair area, material cupboards and wardrobes.The general layout of the workshop venue will be as below, with sufficient spacefor the booth and for the competitors working area as defined in 6.3 below. Page 4 of 17
6.2.1
6.36.4
6.5
6.5.1
Page 5 of 17
Key to the layout above is:
Please note that this is an example of the layout, and is not definitive. Theminimum area requirements will be available.
General Requirements
The working area should provide enough space for the competitors, expert’s(jury), measurement and repair area, material cupboards and wardrobes.
Lockable cupboards must be provided for the safe keeping of the materials andthe examination papers under the responsibility of the chief expert.The organizers will provide four sets of the following for the experts:
1. 4 x Hot-air fan for heat-shrink tubing2. 2 x Magnifiers for experts x3 or x53. 2 x Computers4. One Laser printer
The personal working area for each competitor should be about 3m x 3m, andshall also allow for the equipment and machines specified in Sec. 6.4 below.Measuring Instruments and Tester/Tools
The organisers will provide the following for each competitor:
1. 1x universal DVM
2. 1x Function generator 1-50 MHz, sine, square, triangle3. 1x stabilized power supply (3-30V adjustable)
4. Various connection cables (if necessary, coax cable with BNC plugs)5. 1x Bench Lamp
6. 1x Electrostatic workstation
7. 1x Calculator, non-progammableThe organizers will also provide a spare set of the above for the experts.
Competitors must bring all their own tools, including wire-wrapping equipment.Measurement instruments are optional.
Each competitor may send his tools ahead to the host country in a light, sturdyand lockable toolbox. A complete list of the contents must accompany thetoolbox for Customs clearance i
Unauthorised tools are not permitted. In case of doubt, the competitor must applyto the Jury in advance. Their decision will take into consideration technologicalprogress and the aim of the competition.
2003世界技能大赛电子技术试题（英文版）
