In recent years, the State Administration of Safety Supervision, the Ministry of Industry and Information Technology, the Ministry of Education, and the Ministry of Finance have successively launched a number of national policies to implement major decision-making projects such as vocational skills improvement actions, safety skills improvement actions, and vocational education reforms, aiming to build a highland for the cultivation of technical and skilled talents and a service platform for technical skill innovation, leading the national strategy of vocational education services, integrating into regional development, and promoting industrial upgrading.
In view of the shortcomings of the current universities and enterprise training centers with a single experimental control object and unchanged experimental content, as well as a strong demand for skills training for new and in-service employees of enterprises.
Beijing Hollysys Industrial Software Co., Ltd. (hereinafter referred to as Hollysys) has launched an integrated intelligent simulation teaching system that integrates a virtual simulation training platform and a physical and semi-physical model that replaces real scenes, and has been put into practical application in many universities and enterprises, and has been widely praised by users.
Figure/Overall architecture diagram of the intelligent simulation teaching system
Electricity ordinances
Electric power ordinance is an ordinance product launched for electric power colleges and power enterprises, with the product characteristics of the combination of actual power plant technology and physical model, to help students and employees of energy power, thermal power operation, electrical engineering and automation and other majors intuitively understand and master the production process of modern thermal power plants, make up for the shortcomings of college students and new enterprise employees who do not understand the actual situation on the site, combine theoretical research with actual factory technology, give full play to the advantages of disciplines and specialties, and cultivate application-oriented talents.
Figure/Electric Ordinance Sand Table
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System Applications
Multidisciplinary professional practice teaching base;
Internship base for students of electric power colleges;
teacher training and practice platform;
a skills training and assessment platform shared between electric power colleges and enterprises;
a vocational skills competition platform shared between electric power colleges and enterprises;
training and assessment base for employees of electric power enterprises;
A platform for employee skill appraisal and professional competition in electric power enterprises.
Chemical ordinances
Hollysys intelligent miniature factory MiniPlant is an intelligent, miniature mechatronics product for automation, chemical engineering, energy engineering, environmental engineering and other professional disciplines, the main equipment and the actual process in the industrial site of the spatial layout is basically the same, with the help of visual impact, real touch, intelligent mini operable hardware device, through high-precision process dynamic simulation technology and virtual mixed reality technology to calculate the background simulation of the actual process production data, combined with the operation of training equipment, Restore the process of the real factory between square inches. At the same time, the product takes into account the cognition of process principles and the experience of real construction and operation, and the process device can be freely placed and combined like building blocks, and the dynamic changes of process parameters are displayed in real time through the linkage of process device and simulation model, so as to help trainees better learn the production principle of process equipment and make knowledge more intuitive.
Photo/Hollysys intelligent miniature device
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System Applications
Experimental equipment: Cooperate with the course teaching to provide a variety of simple test objects;
Chemical engineering unit and typical process learning: provide research objects for the course design and innovative design of students majoring in chemical engineering and process automation, and cultivate high-level professionals;
Students and new employees of chemical enterprises internship, practical training, complex process control.
Automated ordinance products
In the context of the construction of the "Double High Plan", higher vocational colleges need more high-level double-teacher teachers to export application-oriented technical talents to the society. Engineering teaching and practice are extremely important compulsory links for cultivating talents in engineering. Hollysys automation ordinance products are designed with real projects as the background, and closely combine theory and practice to help students majoring in industrial automation, electrical automation, electromechanical automation and new employees of enterprises deepen their understanding of basic theory and engineering knowledge, and master the basic knowledge and skills of engineering majors.
Figure/Hollysys automated ordinance system architecture diagram
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System Applications
A multi-level and multi-post all-round practical training platform for the production process of the enterprise;
A scientific research platform for teaching staff to promote the process of building high-quality courses in the school;
Actively attract experts from high-level universities and institutes at home and abroad, and enterprise R&D personnel;
Undertake major industry-university-research cooperation projects entrusted by enterprises, carry out collaborative research and development, and solve major problems;
Improve the teaching level of dual-teacher teachers and export application-oriented technical talents to the society; Contribute to the realization of the "Double High Plan" for higher vocational colleges;
Vocational Skills Appraisal Center to build a link between schools and enterprises in a straight line;
Intermediate and senior vocational qualification appraisal of National Industrial Automation Talent (IAAT).
Relying on its own industrial automation application foundation for nearly 30 years, Hollysys has long carried out research on process dynamic simulation and digital twin smart factory in electric power, petrochemical, chemical, metallurgy, pharmaceutical and other industries, and has successfully served in process simulation, automated teaching laboratory, industrial information security research, emergency drills, real-time optimization and other fields, and has been applied to more and more enterprises and university sites. In the future, Hollysys will continue to be committed to providing a steady stream of power for the improvement of the skills of enterprise employees, the safe production and operation of enterprises, the deep integration of "industry-university-research" in colleges and universities, and the experimental research of scientific research institutes.
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Hollysys PLC - Electrical troubleshooting of PLC control loop
In general, PLCs are extremely reliable devices with a very low failure rate. The probability of hardware damage such as the CPU of the PLC or software running errors is almost zero; If the PLC input point is not caused by strong current intrusion, it will hardly be damaged; The normally open point of the PLC output relay, if it is not a short circuit of the peripheral load ...
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Hollysys was invited to participate in the 2023 China Petroleum and Chemical Industry Digital Transformation and Intelligent Development Conference and delivered a keynote speech
On March 15, the 2023 China Petroleum and Chemical Industry Digital Transformation and Intelligent Development Conference was held in Tai'an, Shandong. The conference aims to strengthen the construction of "intelligent oil and gas fields, intelligent petrochemicals, intelligent chemicals and intelligent oil and gas pipeline networks", and lead China's petroleum and chemical industry to achieve intelligent transformation.
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Hollysys PLC - PLC should be noted in operation (2)
2. Interference in the control system and its sources
On-site electromagnetic interference is one of the most common factors in PLC control system and most likely to affect the reliability of the system. It is therefore essential to know the source of on-site disturbances ...
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Hollysys released a new 100% localized system
On the morning of October 20, 2021, at the Epec Industrial Products Exhibition, Hollysys released a new 100% localized system - 'HOLLiAS MACS IC fully autonomous and controllable DCS system'.
The system integrates the controller microkernel architecture independently developed by Lisi, embedded ...
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Hollysys PLC – How to calculate the analog quantity in PLC
1、-10—10V。 When the voltage of -10V-10V is converted to F448-0BB8Hex (-3000-3000) at 6000 resolution; At 12000 resolution, it is converted to E890—1770Hex (-6000—6000).
2、0—10V。 At a voltage of 0-10V, at a resolution of 12000 ...
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Hollysys PLC - Classification and application of PLC
1. Switch logic control
Switching logic control is the basis of PLC. It is the first use case and the most extensive of all. Replace the previous relay circuit control and realize logic sequence control; It can be used for the control of stand-alone equipment, and can also be used for group control and ...
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Hollysys PLC - the use of PLC serial port communication
Serial communication is done using 3 wires: (1) ground, (2) sending, and (3) receiving. Since serial communication is asynchronous, ports are capable of sending data on one wire and receiving data on the other. Other threads are used for handshakes, but are not required.
Serial communication is the heaviest ...
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Steps on how Hollysys DCS works on a computer
1. Confirm that the new computer has relevant interfaces and can be used normally, and Hollysys DCS software can run on the computer operating system
2. Device and Lisi DCS software, dongle, and related drivers (mainly redundant network cards, data hard disks, etc.)
3. Set up ...
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Hollysys PLC - Six Fault Types of PLC and Troubleshooting Methods (4-6)
Fourth, the fundamental sequence of repairing PLC.
1. Start first.
1) When repairing the PLC, do not start directly immediately, but first ask about the situation and the phenomenon of the problem before and after the problem;
2) If you repair an unfamiliar PLC, you should first understand its operating principle.
...
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Hollysys plc - the difference between DCS and PLC
1. DCS is a "distributed control system", while PLC (programmable controller) is just a control "device", which is the difference between the two. The system can realize the function and coordination of any equipment, and the PLC equipment only realizes the function of this unit.
2. In terms of networking, the DCS network is ...
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Hollysys PLC - the output wiring of PLC
(1) There are three forms of programmable controller: relay output, thyristor output, and transistor output.
(2) The wiring of the output terminal is divided into independent output and common output. When the output relay or thyristor of the PLC is activated, the two output terminals of the same number are turned on. In different groups, you can ...
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Hollysys PLC - the working principle of PLC controller
1. Scanning technology
When the PLC is put into operation, its working process is generally divided into three stages, namely input sampling, user program execution and output refresh. The completion of these three phases is called a scan cycle. During the entire operation, the CPU of the PLC scans at a certain speed ...
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Hollysys PLC - Introduction to the classification of PLC according to the structure and form
According to the structural form of PLC, PLC can be divided into two categories: integral type and modular type.
(1) Integral PLC
The integral PLC is a centralized power, CPU, I/O interface and other components in a chassis, which has the characteristics of compact structure, small size and low price. Small PLC ...
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Hollysys' 100% domestic PLC has achieved breakthrough applications in the field of nuclear power
Hollysys, as the PC general contractor, participated in the construction of the first smart water project in the domestic nuclear power industry (1) - Qin's No. 2 Plant Chengjing Water Intake Smart Operation and Transformation Project, which was recently completed and put into operation. The project is independently implemented by Hollysys, and Hollysys is independently controllable, safe and reliable, and deeply developed by the nuclear high-tech project.
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Hollysys DCS - the development trend of DCS
(1) Development in the direction of integration: the development of standardized data communication links and communication networks, and the formation of a large system of various single (multi) loop regulators, PLCs, industrial PCs, NCs and other industrial control equipment to meet the requirements of factory automation and adapt to the general trend of openness.
(2) To the intelligent ...
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Hollysys DCS - Introduction to I/O in DCS control system
The control system needs to establish the input and output channels of the signals, which is called I/O. The I/O in a DCS is generally modular, with one or more I/O channels on one I/O module for connecting sensors and actuators (control valves).
The control unit of the DCS: a process control station is ...
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Hollysys PLC - Six Fault Types of PLC and Troubleshooting Methods (1-3)
First, the type of failure of the PLC.
1. External equipment failure.
External equipment refers to various switches, sensors, actuators, loads, etc., which are directly connected with the PLC operation process. The failure of these equipment will directly affect the control function of the PLC system. Therefore...
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Hollysys DCS - Introduction to the advantages and disadvantages of DCS
Merit:
1. High reliability: The DCS system has multiple redundancy, backup and recovery mechanisms, which can ensure the high reliability and stability of the system.
2. Sensitivity: The DCS system can be customized according to different industrial processes to meet different control requirements.
3. Efficiency: D...
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Localization transformation: Hollysys assisted in the successful transformation of the DCS system of the first Shell coal gasification unit in China
Since the reform and opening up, China's economy has developed rapidly, and many enterprises have improved production efficiency by introducing foreign production equipment and DCS systems. However, with the growth of the use years, many foreign DCS systems and equipment have gradually aged and are not suitable for the current production needs, so they are localized.
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Hollysys DCS——What should I pay attention to when cleaning the DCS system?
1. Power off
2. Cleaning the ash can not only clean the surface, but also clean the internal card key of the controller
3. If there is a supporting UPS, open the UPS and clean the ashes
4. After cleaning the ash, check whether the card and relay are loose, and tighten them if they are loose
5. The relays with frequent actions should be cleaned regularly.
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