DY Elevator Electrical Control Principle Virtual Simulation Experiment Platform

Release time：2024-07-07 13:00viewed：times

1. Management subsystem

The management subsystem consists of user management, major management, teacher management, class management and student management. The functions are as follows:
(1) User management: system user name, account, password and permission definition;
(2) Major management: including major name, usage status and other information;
(3) Class management: including class name, class description, major, etc.;
(4) Teacher management: m*nly including user name, name, gender, telephone number, em*l address and major, etc.;
(5) Student (candidate) management: student (candidate) name, account, password, class, etc., receiving exam or practice tasks.

2. Teaching subsystem
The teaching subsystem consists of functional modules such as teaching resource library, my courseware folder, learning task release, learning situation analysis, and student end. Its features are as follows:
(1) The management platform’s built-in 3D virtual simulation teaching resource library, which consists of 3D animation teaching resource packages and 3D virtual tr*ning resource packages for each course, is constructed according to projects, tasks, knowledge and skills points, etc. Teachers can also customize and upload other courseware resources that need to be shared, such as: electronic teaching plans, PPT, teaching videos, pictures, documents, etc.;
(2) Teachers can customize courseware folders with their own characteristics according to teaching requirements. Courseware folders can choose the 3D virtual simulation resources that come with the platform, or they can customize and upload other courseware resources, such as: PPT, videos, etc., for classroom teaching;
(3) Teachers can selectively release learning or tr*ning tasks according to the teaching progress for students to learn during or after class;
(4) The teacher end can query students’ online, login, learning time, practice scores, etc.

3. Assessment Subsystem
(1) Question Bank Management:
Question bank management m*nly includes question bank classification management and question bank content management:
Question bank classification management: supports customization. For assessment items of different majors, classification settings can be made according to question type (such as single-choice questions, multiple-choice questions, true or false questions, etc.) or question content attributes; Question
bank content management: Questions can be edited by category, including number, content, question type, category, answer and other information, and supports the import of customized and standard questions.
(2) Examination Management:
Examination management includes paper composition management and assessment management modules;
Paper composition management: includes definition functions such as examination class, invigilator, examination time, and paper composition; Paper composition rules can be customized, and both manual and automatic paper composition methods are supported;
Assessment Management: m*nly manages the assessment process and results; includes two major functions: the invigilator end and the student (candidate) end; the invigilator end can review the candidate's identity online, set and monitor the candidate's status, manage the assessment results, etc. The student (candidate) end can answer questions online after logging in.
(3) Practice management:
Students can conduct many functions online, including self-test exercises, organizing unified examinations, conducting knowledge competitions, assigning extracurricular or holiday homework, intelligent test composition, answer sheet review and grade management;
(4) Student (candidate) side:
The student (candidate) side module provides students with the ability to take mock exams, formal exams, complete homework and practice on the computer.
Virtual simulation teaching system
Mechanical tr*ning safety education virtual simulation software: This software is developed based on unity3d. The software adopts the form of three-dimensional roaming. The movement can be controlled by the keyboard and the direction of the camera can be controlled by the mouse. There are mechanical safety distance experiments, mechanical safety protection device experiments, and basic assessments of mechanical safety protection design. During the experiment, the three-dimensional roaming screen uses arrows and footprints to prompt movement to the experimental position. The circle around the mechanical object shows the working radius. The experimental process is accompanied by a dialog box reminder of the three-dimensional robot.
A. The content of the mechanical safety distance experiment includes the safety distance experiment to prevent the upper and lower limbs from touching the dangerous area (with two types of fence height and opening size). After entering, the GB23821-2009 "Safety distance to prevent the upper and lower limbs from touching the dangerous area" requirement pops up in front of the camera. Wrong demonstration: the experiment process is that after the human body enters the working radius of the mechanical object and is injured, the bloody picture and voice reminder receive mechanical injury, and return to the original position and conduct the next experiment. The last step is the correct approach.
B. The mechanical safety protection device experiment is divided into safety interlock switch, safety light curt*n, safety mat, safety laser scanner and other protection device experiments. The optional categories (safety input, safety control, safety output, other), manufacturer, product list (safety interlock switch, safety light curt*n, safety mat, safety laser scanner, safety controller, safety relay, safety fence). There is a blue flashing frame reminder at the installation location. The experimental process: select the safety fence and install it, select the safety interlock switch (or select the safety light curt*n, safety mat, safety laser scanner) and install it, select the safety controller and install it to the electrical control box, select the safety relay and install it to the electrical control box, and click the start button on the electrical control box. If entering a dangerous area, the system will sound an alarm and the mechanical object will stop working. You can stop by pressing the reset button on the electrical control box.
C. The basic assessment of mechanical safety protection design requires the installation of the mechanical safety system to be completed, and the safety guardr*l, safety interlock switch, safety light curt*n, safety mat, safety laser scanner, safety controller, safety relay, 24V power supply, signal light and emergency stop button to be correctly installed. The assessment is divided into ten assessment points. Some assessment points have three options, which students can choose freely. After the final 10 assessment points are selected, submit for confirmation, and the system will automatically derive the total score and the score of each assessment point.
D. The software must be on the same platform as a whole and must not be displayed as a separate resource.
E. At the same time, the VR installation package of this software is provided to customers to facilitate users to expand into VR experiments. VR equipment and software installation and debugging do not need to be provided.
Mechanical assembly and benchwork assembly virtual simulation software: This software is developed based on unity3d, with optional 6 levels of image quality. It has the design and virtual disassembly and assembly of reducers and shaft structures, design and simulation of common mechanical mechanisms , mechanism resource library, typical mechanical mechanisms (virtual disassembly and assembly of gasoline engines). The software is an integrated software and cannot be a separate resource.
A. Reducer design and virtual disassembly and assembly interface can choose worm gear bevel gear reducer, two-stage expanded cylindrical gear reducer, bevel cylindrical gear reducer, coaxial cylindrical gear reducer, bevel gear reducer, and one-stage cylindrical gear reducer.
Worm bevel gear reducer: After entering the software, the assembly content will be automatically played, and each step in the video will be described in text.
Secondary unfolded cylindrical gear reducer: After entering the software, the content will be played in the form of video. The video content should include: part name (scan the QR code to see the part name), disassembly demonstration (including disassembly, assembly), virtual disassembly (including the whole, low-speed shaft, medium-speed shaft, high-speed shaft, box cover, box seat)
Bevel cylindrical gear reducer, coaxial cylindrical gear reducer, bevel gear reducer, first-level cylindrical gear reducer: click to enter and automatically jump to the edrawings interface. The models are all three-dimensional models . By clicking on the parts to display the part name, you can rotate 360° in all directions, zoom in, zoom out, and translate. At the same time, you can use the move parts function to disassemble and assemble the entire reducer. At the same time, you can select the home button to return to the original state of the reducer. The bevel gear reducer and the first-level cylindrical gear reducer have added the function of inserting cross sections, and the cross sections can be freely dragged to observe the internal structure of the reducer.
B. The design of the shaft system structure and the virtual disassembly and assembly interface can select part recognition, disassembly and assembly demonstration, and actual combat operation.
1. Part recognition: The built-in 3D models and part names of helical gears, end caps without holes, couplings, coupling keys, shafts, gear keys, end caps with holes, sleeves, and deep groove ball bearings are set. Any part can be rotated 360°.
2. Disassembly and assembly demonstration: There are 2 built-in cases. When the mouse is moved to a cert*n part position (except the base and the bearing seat), the part is automatically enlarged and the part name is displayed. There are disassembly and assembly buttons. The software automatically completes the disassembly and assembly of the shaft system structure. The 3D scenes can be rotated 360°, enlarged, reduced, and translated.
3. Actual operation: The 3D parts are neatly placed on the desktop. Students manually select the corresponding parts and move them to the shaft system structure. The parts can be installed only when the placement order and position are correct. There is a restart button to facilitate students to repeat the virtual experiment. When the mouse is moved to a cert*n part position (except the base and the bearing seat), the part is automatically enlarged and the part name is displayed.
C. Common mechanical mechanism design and simulation: optional hinged four-bar mechanism design and analysis, I\II type crank rocker mechanism design and analysis, offset crank slider mechanism design and analysis, crank swing guide rod mechanism design and analysis, hinged four-bar mechanism trajectory synthesis, eccentric linear roller push rod cam , concentric linear flat push rod cam .
1. Each mechanism should be able to input corresponding parameters, and the software can automatically calculate the parameters, and can perform motion simulation and automatically draw curves.
D. The mechanism resource library can choose 11 types of planar connecting rod mechanisms, 5 types of cam mechanisms, 6 types of gear mechanisms, 8 types of transmission mechanisms, 11 types of tightening mechanisms, 6 types of gear tr*n mechanisms, and 8 types of other mechanisms (mechanical equipment simulation).
E. Virtual disassembly and assembly of gasoline engines can choose crankcase assembly and disassembly demonstration, crankcase virtual assembly, valve system assembly and disassembly demonstration, and valve system virtual assembly.
1. The crankcase assembly and disassembly demonstration and the valve system assembly and disassembly demonstration are equipped with disassembly buttons, assembly buttons, restart buttons, and decomposition observation buttons. When the mouse moves to a cert*n part position, the part is automatically enlarged and the part name is displayed. The function is automatically completed by the software to disassemble and assemble the shaft system structure. When the decomposition observation button is used, the three-dimensional model of the crankcase or valve system automatically displays an exploded view, which can be rotated 360° in all directions, enlarged, reduced, and translated.
2. The three-dimensional parts of the crankcase virtual assembly and the valve system virtual assembly are neatly placed on the desktop. Students manually select the corresponding parts and move them to the mechanism. The parts can only be installed when the placement order is correct and the position is correct. There is a restart button to facilitate students to re-conduct virtual experiments. When you move the mouse to cert*n parts, the part name will be automatically displayed.

4. Personal Learning Center
After logging in, students can receive and learn online the tasks assigned by teachers. Students can learn virtual simulation courses, interactive forums, practical tr*ning courses, assessments, rankings, etc. in the personal learning center; the

student personal learning center has modules such as learning tasks, learning status, interactive forums, test papers, homework books, and exercises.
(1) Learning tasks:
Students receive learning tasks issued by teachers and learn by selecting each task module in the learning tasks;
(2) Learning status:
You can view the content, learning time, learning duration and score det*ls of students;
(3) Interactive forum:
Let learners communicate with each other and answer questions in the simplest way;
(4) Test papers, homework books, and exercises:
Students receive tests issued by teachers or answer practice homework.

5. Cloud Platform
The cloud education platform includes modules such as experience courses, essence courses and information release. Experience courses are for visitors to watch and experience resource courses; essence courses include all 3D practical simulation questions, and users can browse and learn resources according to the divided resource permissions; the information release module releases industry trends, laws and regulations, and professional information every day.
(1) The homepage includes popular course rankings (sorted by the number of collections), course rankings (sorted by the number of views), free experience area, course essence area and information release.
(2) In the course ranking area, you can directly click on the course name to browse course resources. (3
) In the free experience area, you can directly click on the course image to enter the course viewing page.
(4) In the course essence area, after logging in, you can directly click on the course image to enter the course viewing page.
(5) The course module allows users to enter the course viewing page. During the viewing process, the system will automatically record the user's viewing time, end viewing time and duration. Users can view their browsing history in the "Playback Record" module; at the same time, users can collect courses, and then the course will appear in the "My Collection" column, and users can conveniently browse their favorite courses. In the common toolbar, click "My Site" to view the playback records and favorite courses.
(6) The information release module will play **news information in a carousel to help users view the required information more quickly.

PC cloud:
The electrical control cabinet model uses discrete components and relay control, which is suitable for the teaching and practical tr*ning of elevator

control principles in secondary vocational schools. (1) 3D teaching resources:
The course teaching content consists of two parts: understanding circuits and understanding components.
Understanding circuits consists of 13 basic functional circuit teaching animations, combining drawings with simulation scenes, with a left-right layout, which is intuitive and easy to understand. Each animation is divided into three parts: "Definition", "Installation location", and "Operation principle".
Understanding components m*nly introduces 11 commonly used electrical components in elevators. Each animation is divided into three parts: "Understanding components", "Location and structure", and "Working principle".

Understanding circuits

Serial number	title	brief introduction
1	Safety circuit	1. The installation position of each safety switch on the safety circuit in the elevator model is displayed one by one on the left and right; it is divided into three parts: Position - a close-up and specific display of each safety switch; Components - an independent appearance display of each safety switch; Action - an animated display of the action process of each safety switch (such as relay contact closure, thermal relay action principle, buffer switch action process, etc.); 2. Right-click any safety switch (indicates disconnection) and the running car on the left will stop running immediately.
2	Door interlock circuit	1. The installation positions of the switches and relays on the door interlock circuit in the elevator model are displayed on the left and right sides in a one-to-one manner; it is divided into three parts: Position - the specific installation position of the floor (car) door contact switch and the door lock relay; Components - the independent appearance display of the floor door lock contact, car door lock contact and door lock relay; Action - the animation display of the opening (closing) process of the floor door lock contact and car door lock contact, and the animation display of the energized closing action process of the door lock relay contact; 2. The left car operates normally and opens and closes the door, and the right synchronously demonstrates the opening and closing status of the contacts.
3	Power Circuit	1. The left and right sides correspond to show the installation positions of the mn components of the power supply circuit in the elevator model; Position - the specific installation positions of the mn switch, transformer, rectifier and fuse; Components - independent appearance display of the mn switch, transformer, rectifier and fuse; Action - animation demonstrations of the mn switch opening and closing operation, transformer input and output voltage measurement, rectifier input and output measurement, fuse short-circuit fusing, etc.; 2. The left side shows the m*n switch closing operation, and the right side shows the voltage value of each input (output) terminal measured by a multimeter.
4	Door switch drag circuit	1. The installation positions of the components of the door opening and closing drag circuit in the elevator model are displayed one by one on the left and right; Position - the specific installation positions of the speed regulating resistor, cam switch, and door opening and closing relay; Components - independent appearance display of the speed regulating resistor, cam switch, and door opening and closing relay; Action - animation demonstrations such as the speed regulating resistor changing the resistance value, the closing of the cam switch when the door opening and closing and the cam shaft move synchronously, and the closing of the energized contacts of the door opening and closing relay coil; 2. The demonstration is divided into two parts: "opening the door" and "closing the door": opening the door - when it is opened to 2/3 of the door width, the corresponding cam switch is closed and the door is decelerated for the first time; when it is almost fully opened, the door opening relay is powered off; closing the door - when it is closed to 1/2 of the door width, the corresponding cam switch is closed and the door is decelerated for the first time; when it is closed to 1/3 of the door width, the corresponding cam switch is closed and the door is decelerated for the second time; when it is almost fully closed, the door closing relay is powered off;
5	Hall call circuit	1. The left and right sides show the installation positions of the m*n components of the hall call circuit in the elevator model in a one-to-one manner ; Position - the specific installation positions of the hall call button, cancellation resistor, and call relay ; Components - independent appearance display of the hall call button, cancellation resistor, and call relay; Action - animation demonstration of the hall call button signal registration operation and the energized contact closure of the call relay coil; 2. Demonstration of the hall signal registration operation on the 3rd floor on the left, and synchronous demonstration of the energized self-locking of the related branch relays on the right, the signal registration process, and the cancellation process after the elevator is leveled.
6	Car command circuit	1. The left and right sides show the installation positions of the m*n components of the car command circuit in the elevator model; Position - the specific installation positions of the internal command button, the floor auxiliary relay for the cancellation function, and the internal command relay; Components - the independent appearance display of the internal command button, the floor auxiliary relay, and the internal command relay; Action - the internal command button signal registration operation, the floor auxiliary relay and the internal command relay coil energized contact closure animation demonstration; 2. The demonstration is divided into two parts: "Car operation, internal command signal registration and cancellation" and "Car stop at the floor, the car button signal on this floor is not registered": Car operation, internal command signal registration and cancellation - the left car stops at the third floor, the car presses 2, the car goes down to the second floor for leveling, and the right synchronous demonstration of the relevant branch relays being energized and locked, the signal registration process and the cancellation process after the elevator is leveled. Car stop at the floor, the car button signal on this floor is not registered - the left car stops at the third floor, the car presses 3, and the right synchronous demonstration of the same floor command does not respond.
7	Rep*r circuit	1. The left and right sides correspond to show the installation positions of the mn components of the mntenance circuit in the elevator model; Position - car top mntenance switch, car interior mntenance switch, mntenance operation button, and specific installation position of the mntenance relay; Components - independent appearance display of mntenance switch, button, and mntenance relay; Action - car top (inside car) mntenance conversion operation, up and down button operation, and mntenance relay coil energized and closed demonstration 2. Divided into two parts of "car top mntenance operation" and "car interior mntenance operation" demonstration: Car top mntenance operation - the car stops on the 2nd floor, and the operation on the car top switches to mntenance, and the animation demonstration of pressing the up (down) line button is shown, and the circuit on the right synchronously demonstrates the process of the up (down) direction relay being energized; Car interior mntenance operation - the car stops on the 2nd floor, and the operation in the car switches to mntenance, and the animation demonstration of pressing the up (down) line button is shown, and the circuit on the right synchronously demonstrates the process of the up (down) direction relay being energized.
8	Leveling circuit	1. The left and right sides correspond to the installation positions of the m*n components of the leveling circuit in the elevator model; Position - the specific installation positions of the upper and lower leveling sensors, door area sensors, magnetic isolation plates, leveling relays and call relays; Components - independent appearance display of leveling sensors, magnetic isolation plates and leveling relays; Action - Demonstration of the insertion of the magnetic isolation plate into the sensor, the right side corresponds to the changes in the contacts in the sensor when the magnetic isolation plate is inserted; the closing of the contacts when the leveling sensor relay coil is energized; 2. The left animation demonstrates the downward movement of the car and the insertion of the magnetic isolation plates into the upper (door area, lower) leveling process in turn, and the right side simultaneously demonstrates the operation of the magnetic isolation plate and the changes in the contacts in the sensor.
9	Braking circuit	1. The installation positions of the mn components of the brake circuit in the elevator model are displayed one by one on the left and right; Position - the specific installation positions of the up and down contactors, fast and slow car contactors, and brake coils; Components - independent appearance display of the up and down contactors, fast and slow car contactors, and brake coils, and the cross-sectional introduction of the internal structure of the brake; Action - the process of the up contactor closing, the process of the up and down contactor contacts when the car goes up and down; the process of the slow car contactor assembly, the process of the change of the slow car up contact; the manual release operation of the brake and the release by electromagnetic power, and the process of power-off brake; 2. The demonstration is divided into three parts: "Starting up", "Deceleration and stop", and "Mntenance operation": Starting up - the left side has a starting torque first, and then the brake is opened with a delay, and the right side corresponds to the process of the brake electromagnet being energized Deceleration and stop - the process of the left brake holding brake stopping, and the process of the right brake electromagnet losing power and holding the brake Mntenance operation - mntenance state, when the car is jogging up and down, the process of the brake electromagnet being energized.
10	Automatic Directional Circuit	1. The left and right sides show the installation positions of the m*n components of the automatic orientation circuit in the elevator model; Position - the specific installation positions of the command relay in the car, floor auxiliary relay, up and down contactor, and up and down direction relay; Components - independent appearance display of the command relay in the car, floor auxiliary relay, up and down contactor, and up and down direction relay; Action - 3rd floor signal registration in the car, change of the floor auxiliary relay contact corresponding to the running position of the car, change of the up and down contactor contact when the car goes up and down, and closure of the up and down direction relay coil energized contact, etc. 2. The left car stops at the 2nd floor. Press the command button in 3, orientation (up), and the energized process of the right up direction relay coil. Demonstration of the orientation process of going down to the 2nd floor.
11	Drag circuit	1. The installation positions of the mn components of the drag circuit in the elevator model are displayed one by one on the left and right; Position - the specific installation positions of the mn power switch, up and down contactors, reactors, fast and slow car contactors, and fast and slow car thermal relays; Components - independent appearance display of the mn power switch, up and down contactors, reactors, fast and slow car contactors, and fast and slow car thermal relays; Introduction to the structure of reactors and thermal relays Action - closing and opening of the mn power switch, closing of the energized contacts of the up and down contactors, and fast and slow car contactor coils, and working principle demonstration of the fast and slow car thermal relays 2. The demonstration is divided into two parts: "starting up" and "upward leveling": starting up - start with series reactors, step-down start, then bypass the reactor, and run at rated speed; upward leveling - before leveling, first change from fast to slow, then first deceleration, second deceleration, and finally stop.
12	Drag control circuit	1. The installation positions of the m*n components of the drag control circuit in the elevator model are displayed one by one on the left and right; Position - the specific installation positions of the up and down contactors, fast and slow car contactors, acceleration and deceleration contactors, and upper and lower limit switches; Components - independent appearance display of the up and down contactors, fast and slow car contactors, acceleration and deceleration contactors, and upper and lower limit switches; Action - demonstration of the energized contacts of the up and down contactors, fast and slow car contactors, and acceleration and deceleration contactors, and the action demonstration of the limit switch when the car overruns; 2. The demonstration is divided into three parts: "Prerequisites for normal start", "Starting up", and "Downward leveling": Prerequisites for normal start - before normal start, the voltage relay contacts are closed, the door is closed, and the door interlock relay contacts are closed; Starting up - demonstration of the left starting and rated speed upward process, and demonstration of the closure of the right synchronous corresponding line contacts; Downward leveling - demonstration of the slow car going down, the first deceleration, the second deceleration and the final leveling, and demonstration of the closure of the right synchronous corresponding line contacts.
13	Floor position detection circuit	1. The left and right correspondence shows the installation positions of the m*n components of the floor position detection circuit in the elevator model; Position - the specific installation positions of the floor position sensor, magnetic isolation plate, and floor (auxiliary) relay; Components - independent appearance display of the sensor, magnetic isolation plate, and floor (auxiliary) relay; Internal structure of the sensor (magnet, reed switch, etc.); Action - the magnetic isolation plate installed on the left top of the car passes through the 2nd floor position sensor, and the right magnetic isolation plate passes through the sensor, and the contacts in the sensor reed switch are closed and disconnected due to the magnetic force; The process of closing the contacts of the floor (auxiliary) relay coil being energized; 2. The left car goes down from the 3rd floor to the 2nd floor and the 1st floor are leveled, and the right corresponds to the state changes of the sensor contacts and the energization process of the floor relay coil.

Understanding components

Serial number	title	brief introduction
1	Common electrical components for elevators-circuit breakers	1. Animation demonstration of the appearance of CJX2S and SC-03 contactors; 2. Installation position - demonstrates the installation position of the contactor in the elevator; 3. External structure - introduces the external structure of the circuit breaker (input and output terminals, handle, trip button); 4. Internal structure - introduces the internal structure of the circuit breaker through a simplified diagram of the internal structure; 5. Three animations "normal", "short circuit" and "overload" are used to demonstrate the operation process of the circuit breaker respectively.
2	Common electrical components for elevators--contactors	1. Animation demonstration of the appearance of the micro-breaker DZ47LE and the molded case circuit breaker; 2. Installation position - demonstrates the installation position of the circuit breaker in the elevator; 3. External structure - introduces the external structure of the circuit breaker (input and output terminals, handle, trip button); 4. Internal structure - introduces the internal structure through a simplified diagram of the internal structure of the circuit breaker; 5. Three animations of "normal", "short circuit" and "overload" are used to demonstrate the working principle of the circuit breaker respectively.
3	Common electrical components for elevators--relays	1. Animation demonstration of the appearance of HH54P and JY-16Y relays; 2. Installation position - demonstrates the installation position of the relay in the elevator; 3. External structure - introduces the wiring terminals of the HH54P relay base; 4. Internal structure - introduces the components of the relay (coil, moving and static contacts, indicator lights, etc.) 5. Demonstrate the action process of the relay contacts through two animations of "attracting" and "releasing".
4	Common electrical components for elevators--thermal relays	1. Animation demonstration of the appearance of JR36 and LRD thermal relays; 2. Installation location - demonstrates the installation location of the thermal relay in the elevator; 3. External structure - introduces the external structure of the JR36 thermal relay; 4. Internal structure - introduces the internal structure of the thermal relay through a simplified internal structure diagram; 5. Demonstrate the working principle of the relay through three animations "normal", "overload" and "reset".
5	Common electrical components of elevators-buttons	1. Animation demonstrates the appearance of regular buttons and emergency stop buttons; 2. Installation location - demonstrates the installation location of the button in the elevator; 3. External structure - introduces the external structure of the emergency stop button; 4. Internal structure - introduces the internal structure of the button through a simplified diagram of the internal structure; 5. Demonstrate the working principle of the button through two animations "action" and "reset".
6	Common electrical components of elevators-travel switches	1. Animation demonstration of the appearance of direct-acting, roller-type and micro-type travel switch buttons; 2. Installation position - demonstrates the installation position of the travel switch in the elevator; 3. External structure - introduces the external structure of the travel switch; 4. Internal structure - introduces the internal structure of the travel switch; 5. Demonstrate the working principle of the roller travel switch.
7	Common electrical components for elevators--phase sequence relay	1. Animation demonstration of the appearance of XJ3-G, XJ12, and RD6 phase sequence relays; 2. Installation location - demonstrates the installation location of the phase sequence relay in the elevator; 3. External structure - introduces the external structure of the phase sequence relay; 4. Demonstrates the working principle of the phase sequence relay through three animations of "normal", "wrong phase" and "missing phase".
8	Common electrical components for elevators--electric lock key switch	1. Animation demonstrating the appearance of the electric lock switch; 2. Installation location - demonstrating the installation location of the electric lock switch in the elevator; 3. External structure - introducing the external structure of the electric lock switch; 4. Demonstrating the working principle of the electric lock switch through two animations "park" and "run".
9	Permanent magnetic sensor - commonly used electrical components in elevators	1. Animation showing the appearance of permanent magnetic sensor and magnetic shielding plate; 2. Installation position - showing the installation position of sensor and magnetic shielding plate in the elevator; 3. External structure - showing the components of the sensor's external structure; 4. Internal structure - showing the components of the sensor's internal structure (reed switch, magnet); 5. Two animations "inserting magnetic shielding plate" and "removing magnetic shielding plate" are used to show the working principle of the sensor.
10	Common electrical components for elevators--adjustable resistors	1. Animation showing the appearance of an adjustable resistor; 2. Installation location - showing the installation location of the adjustable resistor in the elevator; 3. External structure - introducing the structural composition of the adjustable resistor; 4. Two animations "wiring" and "resistance adjustment" are used to demonstrate the working principle of the adjustable resistor and the role of the adjustable resistor in the door opening and closing drag circuit.
11	Common electrical components for elevators-rectifier components	1. Animation demonstrating the appearance of rectifier diodes and rectifier bridge stacks; 2. Installation location - demonstrating the installation location of the rectifier bridge stack in the elevator; 3. External structure - introducing the external structure of the rectifier element; 4. Internal structure - introducing the internal structure of the rectifier bridge stack (4 rectifier diodes); 5. The working principle is demonstrated through two animations "wiring" and "polarity judgment".

(2) 3D virtual tr*ning resource package:
3D virtual tr*ning (exercise) resources are m*nly designed for teaching content, and the knowledge and skills are m*nly set from understanding circuits, understanding components, positions, functions, structures, functions, working principles, etc. It combines difficulty and ease, is both targeted and expands knowledge. Through practice, you can strengthen your understanding and mastery of the knowledge you have learned.

project	Task	Content (knowledge and skills)
Control circuit	Understanding Circuits 1--Safety Circuits	1. Understand the safety circuit diagram 2. Determine the switch function in the safety circuit 3. Understand the components and point out the installation location of the safety switch 4. The working principle of the safety circuit
	Understanding Circuit 2--Door Interlock Circuit	1. Understanding the door interlock circuit diagram 2. The switch installation position in the door interlock circuit 3. Determining the state of the relay contact in the door interlock circuit 4. The working principle of the door interlock circuit
	Understanding Circuit 3--Power Circuit	1. Understand the power circuit diagram 2. Understand the relevant components and installation locations 3. Determine the power supply voltage of the door interlock circuit 4. Check the power supply voltage of the floor door lock circuit
	Understanding Circuit 4--Open and close door drag circuit	1. Understand the door opening and closing drag circuit diagram 2. Understand the relevant components and installation locations 3. Position switch and speed regulating resistor 4. Speed change during the door opening and closing process
	Understanding Circuit 5--Outdoor Call Circuit	1. Understand the circuit diagram of hall call 2. Understand the relevant components and installation locations 3. Analysis of the working principle of hall call circuit signal registration 4. Analysis of the working principle of hall call circuit cancellation
	Understanding Circuit 6--In-car Command Circuit	1. Understand the circuit diagram of the car command 2. Understand the relevant components and installation locations 3. Analysis of the working principle of the car command circuit signal registration 4. Analysis of the working principle of the car command circuit signal cancellation
	Understanding Circuits 7--Rep*ring Circuits	1. Understand the mntenance circuit diagram 2. Understand the mntenance device and installation location 3. The relationship between the mntenance circuit and other circuits 4. Analysis of the working principle of the mntenance circuit
	Understanding Circuit 8--Leveling Circuit	1. Understand the leveling circuit diagram 2. Understand the relevant components and installation locations 3. Understand the sensor structure 4. Analysis of the working principle of the leveling sensor circuit
	Understanding Circuit 9--Braking Circuit	1. Understand the braking circuit diagram 2. Understand the braking device and installation location 3. The relationship between braking and motor rotation 4. Analysis of the working principle of the braking circuit
	Understanding Circuits 10—Automatic Orientation Circuits	1. Understand the directional circuit diagram 2. Understand the relevant components and installation locations 3. Analyze the working principle of the directional circuit
	Understanding Circuits 11--Drag Circuits	1. Understand the drag circuit diagram 2. Understand the drag circuit components and installation locations 3. Analyze the working principle of the drag circuit
	Understanding Circuit 12--Drag Control Circuit	1. Understand the drag control circuit diagram 2. Understand the drag control circuit components and installation locations 3. Analyze the working principle of the drag circuit
	Understanding Circuit 13--Floor Position Detection Circuit	1. Understand the floor position detection circuit diagram 2. Understand the relevant components and installation locations 3. Understand the sensor structure 4. Analysis of the working principle of the floor position detection circuit
Understanding components	Understanding Components 1--Circuit Breakers	1. Know the components 2. The installation position of the circuit breaker in the elevator device 3. Know the parameters and functions of the circuit breaker 4. The working principle of the circuit breaker
	Understanding Components 2--Contactor	1. Know the components 2. The installation position of the contactor in the control cabinet 3. Know the structure and parameters of the contactor 4. The working principle of the contactor
	Understanding Components 3--Relays	1. Know the components 2. The installation position of the intermediate relay in the elevator device 3. Know the structure of the relay 4. The working principle of the relay
	Understanding Components 4--Thermal Relay	1. Know the components 2. The installation position of the thermal relay in the elevator device 3. Know the structure and setting value of the thermal relay 4. The working principle of the thermal relay
	Understanding Components 5--Buttons	1. Understanding components 2. The installation location of buttons in elevator devices 3. Functions of buttons 4. Working principles of buttons
	Understanding Components 6--Travel Switch	1. Know the components 2. The installation position of the travel switch in the elevator device 3. Know the structure of the travel switch 4. The working principle of the travel switch
	Understanding Components 7--Phase Sequence Relay	1. Know the components 2. The installation position of the phase sequence relay in the elevator device 3. Know the structure of the phase sequence relay 4. The working principle of the phase sequence relay
	Understanding Components 8--Electric Lock Key Switch	1. Understanding components 2. The installation location of the electric lock key switch in the elevator device 3. The function of the electric lock key switch
	Understanding Components 9--Permanent Magnetic Sensor	1. Understanding components 2. The installation location of permanent magnetic sensors in elevator devices 3. Understanding the structure of permanent magnetic sensors 4. The working principle of permanent magnetic sensors
	Understanding Components 10 - Resistors	1. Understanding components 2. The installation position of resistors in elevator devices 3. Understanding the structure of adjustable resistors 4. The working principle of adjustable resistors
	Understanding Components 11--Rectifier Devices	1. Understanding components 2. The installation location of rectifier components in elevator devices 3. Understanding rectifier components 4. Understanding bridge rectifiers
	Comprehensive question 1--Understand the components installed in the control cabinet	1. Understand the components installed in the control cabinet 1 2. Understand the components installed in the control cabinet 2
	Comprehensive question 2--Understand the components installed in the hoistway car machine room	1. Understanding components 1 2. Understanding components 2 3. Understanding components 3
	Comprehensive question 3--Components combined with circuit diagram 1	1. Switch status judgment 2. Hoistway switch 3. Circuit m*ntenance
	Comprehensive question 4--Components combined with circuit diagram 2	1. Open/close gate circuit 2. Power supply voltage 3. Effective function circuit during m*ntenance setting 4. Open/close gate drag control circuit
	Comprehensive Question 5--Miniature Circuit Breaker	1. Understanding components 2. Miniature circuit breaker levels and protection functions 3. Circuit breaker parameters 4. Leakage protection of circuit breakers
	Comprehensive question 6--Understanding of commonly used components of elevators	1. Understanding Components 1 2. Understanding Components 2 3. Understanding Components 3 4. Understanding Components 4
	Comprehensive question 7--Floor door f*lure	1. Fault phenomenon 2. Fault analysis 3. Fault diagnosis
	Comprehensive question 8--Floor door f*lure	1. Fault phenomenon 2. Fault analysis 3. Fault diagnosis

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