Comprehensive training and assessment device for PLC sensor technology of electrician, modulus, electric and electric traction single-chip microcomputerIt is a product developed by our company according to the requirements of the Ministry of Education's "revitalization of the 21st century vocational education curriculum reform and textbook construction plan", in accordance with the teaching and training requirements of vocational education, the training content covers "circuit analysis", "electrical foundation", "electrical engineering", "analog electronic technology", "digital electronic technology", "motor control", "relay contact control", "single-chip microcomputer technology", "PLC programmable control and application", "sensor technology and application", the training content is rich, the structure is reasonable, and a machine is multi-purpose. Greatly save the laboratory and reduce the management personnel. The economic benefits are significant. The device is suitable for new or expanded training rooms of higher vocational, secondary vocational, technical college, technical secondary school, vocational school, etc., and provides ideal teaching and training equipment for the school to quickly open training courses.
1. The main advantages and safety protection system of the comprehensive training and assessment device of PLC sensor technology of electrical analog and electric traction single-chip microcomputer.
1. The training project adopts the structure of hanging box and mesh plate, which is easy to expand the new training project, close to the industrial site, strong hands-on ability, and gives full play to the subjective initiative of students.
2. The training screen is equipped with a voltage-type leakage protection device and a current-type leakage protection device, and as soon as there is a leakage phenomenon in the control screen, an alarm will be issued and the total power supply will be cut off to ensure the safety of the training.
3. The 380V AC output on the training screen is equipped with a set of overcurrent protection devices controlled by the single-chip microcomputer throughout the process, and the current exceeds the set value, and the system will alarm and cut off the total power supply to ensure the safety of the equipment.
4. The measuring instrument has high precision, adopts digital and intelligent mode, and conforms to the development direction of modern measuring instrument.
5. Strong comprehensiveness, rich training content, multi-purpose machine, and significant economic benefits.
6. PLC programmable control training includes industrial control configuration software, ** teaching software, and most of the training objects are demonstrated in kind, which can be intuitively trained with PLC instructions.
7. The single-chip microcomputer unit can complete all the software and hardware training of 51 96 8088 8086 series, and can be ** C C196KB and other CPUs, which are powerful.
8. It has the function of timing and fault number recording, so that there is a unified standard for training and assessment.
Second, technical performance.
1. Input power supply: three-phase four-wire (or three-phase five-wire) 380V 5% 50Hz
2. Temperature: -10 +40, relative humidity 85% (25).
3. Device capacity: 15kva
4. Weight: 200kg
5. Dimensions: 1600mm 700mm 1500mm
3. The basic configuration and function of the comprehensive training and assessment device for the PLC sensor technology of the electromechanical model and the electric traction single-chip microcomputer
This training platform is mainly composed of a training screen, a training hanging box, a mesh board, a training table, etc.
1) Training screen.
The training screen is an iron double-layer matte dense grain spray structure, aluminum panel, which provides AC power supply, DC regulated power supply, constant current source, function signal generator, test instrument and training equipment for the training hanging box, etc., and the specific functions are as follows:
1. Control and AC power supply part.
1) Provide three-phase fixed 380V AC power supply, the output of which is independently controlled by the combination switch, and the direct short circuit or overload between phases and lines is automatically monitored and automatically protected by the single-chip microcomputer. After the current type voltage type leakage switch is turned on, the start and stop buttons control the working power supply of the training station. It has alarm and reset functions.
2) Provide single-phase 0 250V 2A continuously adjustable AC power supply one way (equipped with a 05kVA single-phase voltage regulator). At the same time, a set of 0-240V continuously adjustable DC power supply can be obtained through the rectification link, and the output voltage value is indicated by a meter.
3) Provide 2V, 4V, 6V, 8V, 10V, 12V, 14V, 16V, 18V, 20V, 24V low-voltage AC power supply, current 15a。
4) Provide 2 220V sockets to provide working power for external instruments.
5) Equipped with a set of 250V 30W fluorescent tubes and brackets for practical training.
2. DC power supply part.
1) Dual-channel constant current regulated power supply, the output voltage of both channels is 0-30V, and the built-in relay automatically shifts. The multiturn potentiometer is continuously adjusted and easy to use. The maximum output current is 15A, with preset current limit protection function, the output has 0Level 5 digital ammeter, voltmeter indication, voltage stability 10-2, load stability 10-2, ripple voltage 5mv.
2) Low-voltage DC regulated power supply: +5V, current 05a, there is a table indication.
3. Function signal generator: output sine wave, rectangular wave, triangle wave.
1) Frequency range: 5Hz-550KHz, including five frequency bands.
2) Frequency indication: directly read by the hz meter.
3) Voltage output range: sine wave 5hz-250khz 45v，250khz-550khz＞3.5hz
* Attenuation: 0dB, 20dB, 40dB, with continuous fine adjustment.
Rectangular wave: 5hz-250khz 45v，250khz-550khz＞3.5Hz, the amplitude is continuously adjustable.
Triangle wave: 5Hz-250kHz 1V
4. Continuous counting pulse: output frequency 05-300khz。
5. Single pulse: one pair of positive and negative pulses can be output each time.
6. an instrument part.
1) A true RMS AC digital voltmeter, measuring range: 0-500V, 0Level 5, three-digit half-digit.
2) A true RMS AC digital ammeter, measuring range: 0-2000mA, 0Level 5, three-digit half-digit.
3) A DC digital voltmeter, measuring range: 0-200V, 0Level 5, three-digit half-digit.
4) A DC digital display ammeter, measuring range: 0-2000mA, 0Level 5, three-digit half-digit.
5) Single-phase intelligent power and power factor table.
It is composed of a set of microcomputer, high-speed, high-precision AD conversion chip and full digital display circuit. The man-machine dialogue function control mode is realized through keying and digital display window. In order to improve the measurement range and test accuracy, the sampling signal at the instantaneous value of the measured voltage and current is converted by A D, and the active power is calculated by a special DSP. The measurement accuracy of power is 0Level 5, voltage and current range are 450V and 5A respectively, which can measure the active power, power factor and nature of the load; It can also store and record 15 groups of test result data of power and power factor, and can be queried one by one.
6) A pointer DC micro-ampere meter, with a range of 100UA and an accuracy of 1Level 5.
7. Seven-segment decoder: 6 groups of seven-segment decoder and corresponding decoding display digital tube.
8. Logic level display: 8-bit LED display.
9. Logic level switch: 8-bit switch level output.
10. Experiment Manager.
It is usually used as a clock, and has the functions of setting the training time, timing alarm, and cutting off the power supply, and automatically records the total number of leakage alarms caused by wiring or operation errors, providing a unified standard for the assessment of students' training skills.
2) Training hanging boxes and accessories.
a. Electrician part.
1. DGJ-01 DC circuit basic principle hanging box (1).
2. DGJ-02 DC circuit basic principle hanging box (2).
3. DGJ-03 Basic Principles of AC and Magnetic Circuit Hanging Box (3).
4. DGJ-04 AC three-phase load hanging box (4).
5. DGJ-05 Fundamental Laws and Theorems Hanging Box (5).
b. Digital electricity and modular electricity part.
1. DZJ-01 transistor amplification circuit.
2. DZJ-02 MOSFET and negative feedback amplification circuit.
3. DZJ-03 Integrated Amplifier Application (1).
4. DZJ-04 integrated operation amplifier application (2).
5. DZJ-05 integrated operation amplifier application (3).
6. DZJ-06 oscillation circuit and power amplifier circuit.
7. DZJ-07 DC regulated power supply circuit.
8. DZJ-08 digital circuit.
9. DZJ-09 comprehensive training C, PLC part (1) PLC host hanging box configuration Mitsubishi FX1N-40MR host, integrated digital I O (24 digital input, 16 digital output), RS-422 communication port, SC-09 communication programming cable and conversion input and output port, switch, etc. Random configuration of ** teaching software and industrial control configuration software. (2) PLC training hanging box 1 eight-segment decoding display, the light of the tower 2 traffic light automatic control and manual control 3 water tower water level automatic control 4 automatic control molding machine 5 automatic control rolling mill 6 automatic mixing of a variety of liquids 7 automatic feeding and loading system 8 mail sorter 9 four-layer elevator control system 10 manipulator control system 11 machining center control system 12 five-phase stepper motor control system D, single-chip microcomputer: with 51 96 8088 8086 and other CPU single-chip microcomputer, microcomputer, all software and hardware hanging box. e. Sensor: a set of sensor hanging box (including: photoelectric sensor, temperature sensor, piezoresistive pressure sensor and photoelectric, temperature, piezoresistive sensor conversion circuit) f, mesh board and electrical control components configuration mesh board 1, 1 three-phase gate knife, 5 fuses, 4 AC contactors, 1 time relay, 1 thermal relay, 1 reverse switch, 4 travel switches, 1 double throwing switch, 2 iron shell buttons, 1 single-phase watt-hour meter, 1 core transformer, 20 holes in the terminal block. g. 2 sets of three-phase squirrel cage AC motors, a set of connecting wires, a set of needle-nose pliers, screwdrivers, wire strippers and other tools (3) The training table is an iron double-layer matte dense grain spraying, and the desktop is a fireproof, waterproof, wear-resistant high-density board, with a solid structure and beautiful appearance. Fourth, the training project（a).Electrician basic skills training (1）Fundamentals of DC circuits 1The use of electrical instruments and the calculation of measurement errors2Ways to reduce the measurement error of the instrument3Voltammetry measurement resistance 4Determination of characteristics outside the power supply5Series-parallel mixing of resistors6Ammeter working principle7Voltmeter working principle8Ohmmeter working principle9Ohm's Law 10Reciprocity theorem 11Contained in Vinan's theorem 12Norton's theorem 13Wheatstone Bridge 14The condition for the load to obtain maximum power 15Resistance vs. temperature:The resistance of the filament at different voltages is 16 by voltammetryKirchhoff's first law 17Kirchhoff's second law 18Measurement of potential in a circuit19The law of superposition 20Staircase switch two-place control 21Voltage-controlled current source 22Voltage control voltage source (2）AC & Magnetic Circuit Fundamentals1Series-parallel circuit 2Series-parallel hybrid circuit of capacitor 3The role of capacitor C in AC and DC4Single-phase AC circuit 5Connection of fluorescent lamp circuit 6Method 7 to improve the power factorMeasurement of AC circuit parameters8Characteristics of RLC components in sinusoidal AC circuits9Principle of welding transformer 10Transformer no-load experiment 11Transformer on-load experiment 12AC transformer principle 13Principle of voltage transformer 14Reverse connection of the magnetic coupling coil 15Sequence of magnetic coupling coils 16Three-phase load star connection 17Three-phase load delta connection 18Equivalent interchange of star and triangle circuits19The stars and triangles are swapped 20Resonant circuit 21RC frequency-selective network 22Transition process of a first-order RC circuit23Transition process of first-order RL circuits24Response of second-order circuits25RL series circuit 26RC series circuit 27RCL parallel circuit 28The role of inductance in AC and DC29The phenomenon of self-inductance when energizing off (3）Electrical control 1The use of three-phase squirrel cage asynchronous motors2Three-phase asynchronous motor direct start control 3Three-phase asynchronous motor jog control 4Three-phase asynchronous motor self-locking control 5Forward and reverse control of contactor interlocking 6Contactor and push button double interlock forward and reverse control (b).Electron (Counting electricityModular electric).Technical training (1）Practical training of basic skills of analog circuits 1Forward characteristics of the diode2Reverse characteristics of diodes3Switching characteristics of diodes4Diode embedding 5Diode limiter 6Transistor input and output characteristics 7Triode basic amplifier 8Transistor limiter 9Constant voltage source circuit 10Constant current source circuit 11Triode switching characteristic 12Triode utility circuit 13Low-frequency small-signal amplifier 14Single minimum signal voltage amplification with load 15Voltage negative feedback bias circuit 16Series current negative feedback circuit 17Series voltage negative feedback circuit 18Parallel voltage negative feedback circuit 19Parallel current negative feedback circuit 20Emitter output circuit 21Autonomous emitter output circuit 22Increase the emitter potential with a resistor23Increase the emitter potential with a regulator tube24Eliminate self-oscillations with negative feedback25Single-tube small-signal amplifier 26Twin Tube Two-Pole Amplifier 27Junction tube amplifier 28MOSFET voltage-dividing self-bias circuit 29Capacitor attenuation of high-frequency voltages 30Emitter Follower 31Difference amplifier 32Long-tail difference amplifier 33Differential input, single-ended output, 34OTL Complementary Symmetry Amplifier 35OTL power amplifier 36Differential input op amp 37RC phase-shift oscillator 38PC Bridge Oscillator 39Inductive oscillators 40Quartz crystal oscillator 41Capacitive three-point oscillator 42Transformer feedback oscillator 43Dual-T frequency-selective network 44Rectangular wave oscillator 45Zigzag wave oscillator 46Sine wave oscillator 47Audio oscillator 48Sine wave cosine wave oscillator 49Difference amplifier basic circuit 50Constant current source difference amplifier 51Dual-supply difference amplifier 52Single-ended input, single-ended output: 53Differential input, double-ended output, 54Constant pressure source: constant current source 55Three-tube OTL complementary symmetrical amplifier 56Four-tube OTL complementary push-pull power amplifier 57Integrated power amplifier 58Volt-ampere characteristics of diodes59Capacitive DC-blocking characteristic 60The basic amplification principle of the transisket61Common base circuit 62Common emitter circuit 63Co-collector circuit 64Voltage-dividing current negative feedback bias circuit 65Stabilize the operating point 66 with a thermistorDiode stable operating point 67Common source amplification circuit 68Common drain amplification circuit 69Common gate amplification circuit 70Noninverting operational amplifiers 71In-phase input protection measures72Basic inverting arithmetic circuits 73Basic circuits for inverting operations 74Inverted input protection measures75Summation of inverting inputs76Double-ended input summation operation77Inverting input summation operation78Simple zero-crossing comparison circuit 79Double-limit comparison circuit 80Basic bandpass wave circuit 81Rectangular wave oscillator 82Transformer rectifier filter circuit 83Bridge rectifier regulator circuit 84Doubling the current rectifier 85Three-terminal integrated voltage regulator 86Three-terminal adjustable integrated voltage regulator 87Electronic filter 88Continuously adjustable regulated power supply 89Regulated power supply soft start 90Resistor-capacitance diode storage and delivery of thyristor 91Electronic voltage regulator 92Thyristor trigger circuit 93Regulated power supply with amplification link94Parallel regulated power supply 95Series regulated power supply (2）Practical training of basic skills of digital circuits 1Parametric test 2 for TTL integration gatesParameter test for CMOS logic gates3TTL integrated electrode open gate and tri-state output gate application4with、Noneor,Experiment with NAND gate circuit 5Semi-adder circuit real 6Full Adder Circuit Experiment 7RS Flip-flop Experiment 8d Flip-flop experiment 9JK Trigger Experiment 10T Flip-flop Experiment 11The JK type flip-flop is converted into a D-flip-flop 12The D-type flip-flop is converted to the JK flip-flop 13Counter Experiment 14MSI Shift Registers and Their Applications15Decoders and their transformations16MSI Data Selector and Logic Design17Differential monostable circuits18Toroidal multivibrator 19The encoder is constructed using a gate circuitDispenser,Selector 20One of the design of the combined circuit is a one-to-one coding conversion 21Design of Combined Circuits 211 Display Circuit 22Design of synchronous sequential circuits23Design of computer timing circuits24Integrated Timer Testing & Applications25CMOS Integration Ad、d/aConversion circuit experiment 26Diodes are not gatesOR NOT gate 27Transistor non-gate,NAND Gate,OR NOT gate circuit 28Asynchronous decimal subtraction counter 29Asynchronous decimal addition counter 30Comprehensive Ability Training Experiment - Electronic Stopwatch (3）Integrated Circuit Training 1Temperature control circuit 2Automatic opening and closing circuit of exhaust fan 3Light control circuit 4Light control circuit switch 5Gear light 6**Doorbell circuit 7Electronic doorbell circuit 8Electronic alarm 9**Alarm 10Flash 11Dimming circuit for household desk lamps (c).Electric drag training 1The knife switch is turned to control the circuit 2Contactor jog forward rotation control circuit 3Forward rotation control circuit 4 with self-lockingForward rotation control circuit 5 with over-finding protectionThe reverse switch controls the forward and reverse control circuit 6Forward and reverse control line 7 of contactor interlockingPush button interlocking forward and reverse control line 8,Button contactor composite interlocking control circuit 9Automatic round-trip control line 10The contactor controls the series resistance step-down starting line 11,Time relay control series resistance buck control circuit 12,ManualBuck start 13,Contactor control yBuck start 14,Time relay control yBuck start 15,qx3-Type 13 yAutomatic start control circuit 16,Half-wave rectifier energy consumption braking control circuit 17,Full-wave rectifier energy consumption braking control circuit 18,C620 lathe electrical control circuit 19,Manual step-down start 20Single-phase operation reverse braking control circuit 21,Electric hoist electrical control circuit 22,C6163 lathe electrical control circuit 23,Control circuit interlocking control circuit 24,Main circuit interlocking control line (iv).PLC programmable control part (1）PLC Training Project 1Motor Control (module board).Experiment 1:Motor Direct Start Experiment 2:Motor Forward and Reverse Control Experiment 3:Y- of the electric motorLaunch 2Eight-segment code display、Tower Light Experiment 4:Answering Device Experiment 5:Priority Judgment Experiment 6:Numerical Experiment 7:Flickering Light Control Experiment 8:Emission Light Control Experiment 9:Flowing light control3Traffic light automatic control and manual control experiment 10:Experiment 11:Traffic Light Manual Control Experiment 12:The opening and closing time of the traffic light is controllable Experiment 4Water Tower Water Level Automatic Control Experiment 13:Experiment 14:Water Tower Water Level Automatic Control Experiment 15:Automatic water level control of water tower with self-diagnosis5Experiment 16:Semi-automatic control of a molding machine Experiment 17:Fully automatic control of molding machine experiment 18:Fully automatic control of the forming machine with counting6Self-Controlled Rolling Mill Experiment 19:Semi-automatic control experiment of a rolling mill 20:Fully automatic control of rolling mill experiment 21:Rolling mill with counting continuous rolling control 7Automatic Mixing of Multiple Liquids Experiment 22:Automatic Mixing of Two Liquids Control Experiment 23:Automatic Mixing Control of Three Liquids Experiment 24:Three kinds of liquid automatic mixing heating control8Automatic feeding and loading system experiment 25:Automatic Loading System Experiment 26:Automatic feeding and loading system experiment 27:Feeding loading system control 9Mail Sorter Experiment 28:Single Mail Sorting Control Experiment 29:Multi-mail sorting experiment 30:Fully automated control of mail sorting10Four-story elevator control system 11Manipulator control system 12Five-phase stepper motor control system (iv).Motor control training 1 based on PLCPLC-controlled three-phase asynchronous motor forward and reverse rotation control 2PLC-controlled three-phase asynchronous motor YLaunch Control 3PLC-controlled three-phase asynchronous motor step-down start control 4PLC-controlled three-phase asynchronous motor energy consumption braking control 5C620 lathe electrical control circuit 6C6130 lathe electrical control circuit 7Electric hoist electrical control circuit (v).MCU training amcs-51 MCU training software part 1Clearance Procedure 2Word Splitting Program 3Spelling Procedure 4Data area transfer subroutine 5Data Sorting Experiment 6Find the same number of 7Unsigned double-byte fast multiplication subroutine 8Multi-branch programs9Pulse counting (timed counting experiment) 10Computer Clock (Timer, Interrupter Comprehensive Experiment) 11Binary conversion to bcd12Binary conversion to ASCII13Eight-segment digital tube display 14A keyboard scan shows the experimental hardware section 1P1 Mouth Lighting Experiment 2P1 Exit Turning Light Experiment 3 p3.3 input, P1 port output 4Industrial Sequence Control (Interrupt Control) 5 8255 a.b.c output square wave 68255 PA port control PB port 78255 Control Traffic Lights 8Simple Io Port Extension Experiment 9a d conversion experiment 10d a output square wave 11Electronic Audio12Relay control 13Stepper motor experiment 148253 square wave 15String-parallel conversion experiment 16External Memory Expansion Experiment 17MCS-51 Serial Port Application Experiment -- Dual-machine Communication 18MCS-51 Serial Port Application Experiment - Communication with PC 19Closed-loop temperature control20Small DC motor speed regulation experiment 21External Interrupt (Ambulance and Traffic Light) B, 8088 8086 Series Microcomputer Training Software Part 1 Clearing Procedure 2 Word Splitting Program 3 Spelling Program 4 Data Area Movement 5 Data Sorting Experiment 6 Finding the Number of "Zeros" 7 32-Bit Binary Multiplication 8 Multi-Branch Program 9 Display Subroutine 10 Keyboard Scan Display Experiment 11 Binary Conversion to BCD12 Binary Conversion to ASCII Hardware Part 1 8255 Parallel Port Experiment: ab.C port output square wave 2 8255 parallel port experiment :p A port control PB port 3 8255 parallel port experiment: control traffic light 4 simple I o port extension 5 A D conversion experiment 6 D A conversion experiment : output square wave 7 D a conversion experiment : output sawtooth wave 8 8259 interrupt controller experiment 9 timing counter: 8253 square wave 10 relay control 11 8251 serial communication experiment: spontaneous self-collection 12 8251 serial communication experiment: communication with PC 13 stepper motor control 14 Small DC Motor Speed Regulation Experiment 15 Temperature Closed-loop Control 16 Audio Driver Experiment C, MCS-96 MCU Training Software Part 1 Clearing Procedure 2 Word Splitting Program 3 Spelling Program 4 Data Area Transfer Subroutine 5 Data Sorting Experiment 6 Finding the Same Number 7 Unsigned Double-Byte Fast Multiplication Subroutine 8 Multi-Branch Program 9 Timer 1 Experiment - Timing Interrupt 10 Timer T1 and T2 Produce Interrupts at the Same Time 11 80C196 External Interrupt Experiment 12 80C196 Software Method Produces Interrupts 13 Measuring the pulse width with HSI14 Measuring the width of a single pulse with HSI15 Generating a single pulse with HSO16 Generating continuous pulses with HSO17 Software timer18 80C196 AD conversion experiment19 Using PWM of 80C196 to generate various waveforms20 Binary conversion to BCD base conversion to ASCII hardware part: 1 P1 port light experiment, 2 P1 port turning light experiment, 3 P26 input, P1 port output 4 Industrial sequence control 5 8255 ab.C output square wave 6 8255 PA port control PB port 7 8255 control traffic light 8 simple I O port expansion experiment 9 A D conversion experiment 10 D A output square wave 11 relay control 12 8253 square wave 13 80C196 serial port experiment 14 LED seven-segment digital tube display experiment 15 keyboard display comprehensive experiment 16 audio driver experiment 17 stepper motor experiment 18 DC motor experiment 19 external interrupt (ambulance and traffic light) (6) sensor training 1 Rotational speed measurement experiment of photoelectric sensor 2 Measurement experiment of rotation direction of photoelectric sensor 3 Temperature sensor and temperature control experiment (AD590) 4 Temperature characteristics experiment of temperature sensor (AD590) 5 Characteristic experiment of piezoresistive pressure sensor 6 Differential pressure measurement experiment of piezoresistive pressure sensor *with* experiment is a thinking experiment.