Design of electronic control and manipulation simu

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Design of simulation system for electronic control and operation of quayside container crane

Shanghai Port education and training center introduced the container crane operation simulation of American digitran company at the end of 2001. At this forum, industry experts proposed the necessity of developing new products and materials and suggested the development direction of the future automotive industry. The crane operation simulator has various operation training functions; It can simulate the loading and unloading process of containers and large items; It can simulate the loading and unloading of ship hatch cover plate; It can simulate operations under different climatic conditions, such as changes in wind force and direction, changes in lighting and brightness, changes in fog, etc; It can simulate the size parameters and motion parameters of various shore bridge and field bridge models; It can simulate the fault phenomenon during operation

the crane operation simulator simulates the port operation scene in three dimensions to meet the requirements of various operation conditions; It can produce the corresponding vibration feeling in real time according to the various actions that occur during the operation of students; It can truly reproduce the sound effect of the operation site according to the working process

the operation simulator has the function of teaching management, which can record and statistically analyze the operation of students, and provide a computer examination system

the trainer can be trained with different degrees of complexity: A: apply for training trainees B: experienced personnel have a comprehensive grasp of the technology

subway driving trainer


at the beginning of 1997, the electrical simulation Institute of Shanghai Railway University designed and developed the Beijing subway driving simulator according to the characteristics of Beijing subway train operation. Figure 1-1 shows the functional structure of the system. The computer system of the simulator adopts two 586 microcomputers, in which the host computer completes the simulation operation calculation, parameter display during operation, as well as the connection and communication with other subsystems. In addition, the interpolation single graphics card combined with mouse control completes the function of troubleshooting. The other is a control computer, equipped with a touch screen to complete the setting and selection of parameters. Such a design structure can realize the modern training of subway drivers. The visual system adopts the combination of playback and animation. Because the subway scene only has two situations: forward and backward, the forward-looking scene playback control system and the line danger generation superposition system are adopted. The computer is used to control the speed regulation of the laser playback

machine, and the computer-generated animation is superimposed on the real scene to simulate the line obstacles and abnormal conditions. The real-time analog manipulation and control system uses a 8031 single chip microcomputer to manage the collection of the database and the control of the state output. The collected data is packaged and sent to two simulation hosts through 232 serial port. The results in the simulation host are also packaged and sent to the 8031 interface controller through serial port, which is displayed to the console instruments and signal lights

spreader: the four corners of the frame are equipped with rotary locks, which are combined with the corners of the container through hydraulic device, rotary lock mechanism and rotary lock to lift the container

working principle of the sling:

in the simulation of the sling, it is necessary to simulate the working process of the rotary lock, so it is necessary to understand the working principle of the rotary lock. The working principle of the rotary lock of the fixed and telescopic spreader is the same: there is a rotary lock box at the four corners of the spreader, and there is a ejector rod in the rotary lock box, which protrudes at the bottom of the rotary lock box under the action of the spring. When the rotary lock enters the empty top corner of the container, the bottom surface of the rotary lock box contacts the top surface of the corner of the container, the protruding top rod is pressed back, and the upper end of the top rod touches the contact switch. The indicator lights at the four corners of the sling and the indicator lights on the driver's console are on, and the rotary lock can be turned; The hydraulic cylinder pushes the connecting rod to rotate the rotary lock by 90 degrees, touches the limit switch, and the indicator light is green, indicating that the rotary lock has been closed, and then the container can be lifted. When manufacturing the container loading bridge simulator, this basic working principle is simulated. It is also necessary to solve the problem of turning off the action and indicator lights to make the fruits and vegetables durable

system implementation function:

tasks and requirements of the system

the electronic control and manipulation simulation system of the loading and unloading bridge should complete all the training contents required by the driving position of the electric loading and unloading machinery, especially for the training of the loading and unloading bridge, it should also complete the following tasks:

1 Through the operation and use of the system, the quasi trainees of loading bridge drivers initially establish the concept of loading bridge driving operation, operate the control components more skillfully, and complete the basic skills of container loading or stacking

2. Students should basically master the sound, temperature, pressure and other phenomena, use instruments, computers and other tools to judge the location and causes of Zhao's mechanical, electrical, hydraulic and other faults, and put forward troubleshooting suggestions

3. Make an objective evaluation of the students' operation experiments

score a student's operation of the simulation system by computer, and point out the operation defects

functional structure:

according to the needs of port training in China, a set of technical scheme of computer simulation training device for port crane drivers is proposed, which uses advanced computer, multimedia and automatic control technology to realize the simulation training function of lifting machinery of container loading and unloading bridge on the shore, so as to use the computer simulation training system to partially or most replace the operation training of the real machine. The main functions include:

1 A complete set of operating system in the cab has the function of simulating the operation of four mechanisms of crane: lifting, slewing, luffing and walking

2. The imitation of realizing the real-time operation of loading and unloading goods from the ship adopts the new design and the thinning function of packaging wall thickness, which can realize various feelings of the driver when the mechanism starts, runs and brakes

3. With a set of standardized driver operation tutorials and safety education courses

4 Using multimedia technology and advanced image processing technology, various weather conditions can be simulated according to needs, such as sunny days, cloudy days, fog, day and night operations, and the impact of different wind speeds and directions on cargo handling

5. The instructor can understand the operation of the students and control and adjust the teaching content on the training platform, such as changing the weather conditions, setting up fault simulation and handling, etc

6. The evaluation software system can realize operation error prompt, real-time scoring function and evaluation result report

8: system function:

9: system equipment composition:

container bridge crane driver simulation training system is composed of driver console, instructor console, visual system, electrical control system and multimedia operation and monitoring system

10: object-oriented system analysis method is the analysis method of virtual reality system

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