Hongmeng meets smart wear, how Huawei sports health can be realized

Zhang Wei, president of Huawei’s smart wearable and sports health product line, said on the topic of sports health, “Huawei hopes to make the best connections in the health industry.” In China, digital health has become the focus of attention, including connectivity and life cycle services. and standardization.

Previously, Huawei paid more attention to experience and technology, but this year, it focused on empowering partners to build a software and hardware ecosystem. In Zhang Wei’s view, the future trend of the big health industry is digitization. The model that uses smart devices as touch points, data-driven, intelligent as a means, and user-centric model is an important factor for Huawei to make changes in the health management business. opportunity.

Hongmeng meets smart wear, how Huawei sports health can be realized

1. Wearable shipments exceeded 60 million, from consumers to medical institutions

Zhang Wei said that this year, Huawei Sports Health has more than 200 million registered users, and Huawei has shipped more than 60 million wearable devices in more than 170 countries. During the exchange, Zhang Wei also mentioned many actual implementation cases of Huawei’s health empowerment industry.

For example, Huawei recently cooperated with RQ, a professional analysis and guidance software for running data. One of the novice users ran 5 kilometers at a pace of 10 minutes each time. With the help of data provided by Huawei Sports Health and Huawei wearable products, through the data analysis and analysis of RQ Feedback completed 14 weeks of training and successfully completed his first half marathon.

In the research of digital heart health, Huawei has cooperated with 301 Hospital to launch atrial fibrillation prediction research based on the previous atrial fibrillation screening, and conducted atrial fibrillation screening prediction through the heart health research of 301 Hospital.

It is said that Huawei’s sports health platform has helped the 301 hospital to recruit 1.8 million users. This sample size is of great help to medical research and can more accurately identify the problem. At the same time, these data can promote the upgrading of medical methods.

Overseas, Huawei cooperates with a company in Ireland, which is also a developer partner, to monitor the health of medical staff through Huawei wearable devices and data, as well as temperature stickers and related equipment in the industry, to prevent medical staff from being in the process of epidemic prevention and control. Infections have not been detected in time.

2. This year, focus on empowering developers and partners to build a software and hardware ecosystem

In the field of sports health, Huawei hopes to empower partners in sports, sleep, emotional management, stress management and other fields through the accumulation of technologies in sensors, algorithms, and operating systems. The main platforms for empowerment are HUAWEI Health and HUAWEI Research.

At this developer conference, Huawei upgraded the HUAWEI Health platform more clearly and integrated it into the Huawei HMS core5.0 system. Last year, Hi Health 1.0 was upgraded to 2.0. Provide HUAWEI Health’s Kit, these Kits can facilitate developers to develop more health apps for mobile phones and watches.

Zhang Wei said that last year they paid more attention to experience and technology, and this year they will pay more attention to empowering partners through the HUAWEI Health platform to build a hardware and application ecosystem.

Hardware and software are Huawei’s north-south ecology. After the outbreak of this year’s epidemic, the sales of indoor equipment have soared, and consumers have a strong desire to exercise. He specifically mentioned that with the advancement of technology, the means of indoor fitness will become more and more in the future. many.

In the south direction, the HUAWEI Health data platform can exchange data with ecological manufacturers such as treadmills and spinning bikes. Its data can be transmitted to the HUAWEI Health platform with the user’s authorization. Whether users are in the gym, at home or on business trips, As long as it is connected to the fitness equipment connected to HUAWEI Health, your data can be taken away and saved, forming a long-term data accumulation.

For consumers, Huawei hopes to further simplify the user experience. Zhang Wei feels that with the development of HarmonyOS, the interconnection with fitness equipment can be achieved in the future with only one step or even one step. , and direct remote sensing in the future”, and the upgrade of this connection experience needs to be completed by Huawei and its partners.

When it comes to profitability, Zhang Wei has not shied away. He said that in the past few years including this year, the consumer-oriented APP and Health platform have been empowering. He hopes that the overall solution can achieve a complete experience and connect more external partners. , Profit is not our current goal, experience and value services are the focus.

3. Hongmeng distributed technology will change the status quo of equipment isolation

For Huawei, their core advantage is that their solutions are a combination of device and cloud, from hardware to system to software, and are built around scenarios. This concept comes from Huawei’s “1+8+N” The all-scenario strategy, in Zhang Wei’s view, is much more competitive than the past solutions.

“We use the smart terminal as a contact point to really reach consumers, with the hardware foundation and application ecology.”

Mention the problem that data in smart devices are generally “isolated” from each other. Zhang Wei said that in September, Huawei just launched a new feature in sports health called “healthy life”, a modeled data that integrates Huawei’s data on exercise, sleep, and emotional management to form a model for evaluating healthy life. .

This model will regularly formulate some small tasks for consumers to manage, carry out task-driven health management, “integrate more data together, and evaluate users’ health behavior.” Conditions are all touched by healthy behaviors, and if healthy behaviors can be managed, it will be beneficial for most users.

At the same time, he also mentioned Hongmeng OS. He said that this is a very important system for creating a hardware integrated experience in the future. Through the underlying support of Hongmeng OS, Huawei can target different hardware platforms and create a unified experience capability.

Zhang Wei gave an example at the scene. Now everyone sees that Huawei’s sports health is an APP on the mobile phone, but in fact, the sports health APP can have different presentation forms and functional attributes on different terminals. For example, we can present a complete picture on the mobile phone. The sports health management platform has a variety of data and courses, while on the big screen, it will focus on fitness, interaction, live broadcast, and even future telemedicine.

On the watch, you can focus on health monitoring, reminders, and early intervention. Sports health is “distributed” on different hardware. Huawei will open up this distributed technology, allowing developers to develop applications on Huawei’s wearable devices, mobile phones, tablets and other hardware to achieve “one development, multiple terminals”. deployment” effect.

In Zhang Wei’s view, hardware is actually to present the value that users are most concerned about by using different UIs, using different forms of hardware, suitable for different scenarios, and showing the core value.

Consumers pay attention to the way of interaction, but they may not pay much attention to products. This is just a difference in form. This is also a long-term vision for the distributed experience that Hongmeng OS can create in the future. Huawei needs to move towards this goal step by step.

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Huawei does not build cars but focuses on ICT technology, to be the Intel of the automotive industry

Can Huawei build cars? Huawei’s official answer is that it will not build a car for the time being.

On November 25, Huawei’s internal community disclosed Huawei’s “Resolution on the Management of Smart Auto Parts Business”. This document reiterated that Huawei does not build complete vehicles, but focuses on ICT technology to help car companies build good cars and become an intelligent network. Incremental parts provider for automobiles.

However, this document signed by Huawei founder Ren Zhengfei on October 26, 2020 shows that Huawei has adjusted the organizational structure of the automotive business, which has been divided into Huawei’s consumer business from a separate automotive business department, and the person in charge is also rotating from Huawei. Chairman Xu Zhijun became Yu Chengdong, CEO of Huawei’s consumer business.

This adjustment gives the outside world more room for imagination, because Huawei’s consumer business is mainly responsible for smart terminals such as mobile phones. If smart cars are smart terminals for walking, this organizational adjustment seems to be more logical.

According to surging news reporters, Huawei made the decision to sell the BU (business unit) of the car to the consumer BG. Although the two events are not related, the consumer BG (business group) business entity after the sale of the Glory was made. In addition, the smart car business was originally involved in the consumer business. After the car BU is fully integrated into the consumer business, it will be better coordinated, without cross-department coordination, and the efficiency will be improved. a little higher.

A Huawei insider said that the company does not have a car-building plan at present, and may want to become a role like Bosch or Intel of smart cars, but the company has not made it clear either.

Smart car business classified as consumer business

This document shows that Huawei’s smart car solution BU (business unit) is merged into Huawei’s consumer business, and the restructured Huawei’s consumer business will cover smart terminals and smart car solutions, still led by Yu Chengdong. With the re-division of the business, the investment decision and portfolio management of the smart auto parts business has been adjusted from the ICT (information communication technology) business IRB (Product Investment Review Board) to the smart terminal and smart auto parts IRB. Yu Chengdong was appointed as the director of IRB for intelligent terminals and intelligent auto parts.

This resolution reiterates that Huawei does not build complete vehicles, but focuses on ICT technology to help car companies build good cars and become an incremental component provider for intelligent connected vehicles. “Who will make any suggestion to build a car in the future, interfere with the company, be able to leave the post, and look for another post.” This resolution document clearly opposes the idea of ​​​​Huawei’s internal artificial car, and emphasizes the smart terminal and smart auto parts committee and consumer business management. The committee must adhere to Huawei’s strategy of not making cars, and has no right to change this strategy. The document is valid for three years.

Huawei has three BGs (business groups) and two BUs. Among them, the three major BGs refer to the operator business BG, the enterprise business BG and the consumer business BG. One of the two BUs is the Huawei Cloud BU and the Smart Car BU.

However, although Huawei reiterated that it would not build cars, assigning the car business to Yu Chengdong’s leadership still gave the outside world a lot of room for imagination. Yu Chengdong worked hard to make Huawei’s mobile phone business a global leader. If Huawei is ready to enter the vehicle field one day, experienced, Yu Chengdong, who is good at developing new markets, is very likely to lead.

Huawei Intelligent Vehicle Business (HI)

On October 30 this year, at the domestic launch of the Huawei Mate 40 series, Huawei’s smart car business, which had just been assigned to Huawei’s consumer business, appeared together a few days ago.

Wang Jun, President of Huawei Smart Car Solutions BU, announced at the press conference that Huawei has launched a new brand of smart car solutions “HI”. HI provides powerful computing power and operating systems, including three major computing platforms (intelligent driving computing platform, intelligent cockpit computing platform and intelligent vehicle control computing platform), as well as three major operating systems AOS (intelligent driving operating system), HOS (intelligent cockpit) Operating System) and VOS (Intelligent Vehicle Control Operating System).

Wang Jun said at the press conference: “Huawei does not build cars, but helps car companies to build good cars. Huawei provides technical advantages, and car companies provide advantages in the whole vehicle, and the strong alliance.” He also said that he believes that the new model will definitely be developed. of smart electric vehicles.

A rumor circulated on the Internet a few days ago that Huawei made a car, saying that Huawei is positioned as “Bosch”, and its level of autonomous driving is second only to Tesla. At present, there will be 10,000 to 20,000 R&D personnel responsible for the integration of Huawei’s consumer business and automotive business. Automotive research and development.

In this regard, a relevant person from Huawei said that there are many untrue and exaggerated rumors.

However, Bosch or Intel in the smart car industry are indeed the roles that Huawei hopes to become. Huawei’s HI (HUAWEI Intelligent) is also similar to Intel inside. We hope that future smart cars can use Huawei’s solutions.

Bosch is the leading global component supplier, while Intel is the main supplier of PC chips and server chips.

Even though Huawei has repeatedly stated that it does not build cars, the outside world is still full of vigilance against Huawei. Because in the era of smart cars, industry barriers are not as good as traditional cars, and car companies may not share data to maintain their competitiveness. Huawei’s business model of providing solutions for car companies may not work. In the end, Huawei may have to build its own cars. .

Evolution of Huawei’s Automotive Business

In April 2019, Huawei participated in the Shanghai Auto Show for the first time. Xu Zhijun, Huawei’s rotating chairman, said at the Shanghai Auto Show that Huawei is committed to becoming an incremental component supplier for intelligent connected vehicles.

Xu Zhijun said that the auto industry is positioning ICT technology as the new dominant auto technology. With the deep integration of the automotive industry and the ICT industry, intelligent and connected electric vehicles are becoming a new revolutionary development engine for human society, and its impact goes far beyond the two industries themselves.

In May 2019, Ren Zhengfei approved the establishment of a smart car solutions business unit, which is directly under the management committee of Huawei ICT (Information and Communication Committee), which is equivalent to the status of the three traditional business groups (BGs). Wang Jun became the president of Auto BU.

In October 2019, Xu Zhijun was asked about Huawei’s automotive technical capabilities. “What Tesla can do now, we can do,” he said.

On August 13, 2020, Huawei’s industrial and commercial information changed, and the business scope added research and development, production, sales and services of auto parts and intelligent systems.

On August 14, 2020, Wang Jun announced the Hongmeng in-vehicle OS system at the 2020 China Auto Forum, including the Hongmeng cockpit operating system HOS, the intelligent driving operating system AOS and the intelligent vehicle control operating system VOS.

On September 8, 2020, Huawei Electric Technology Co., Ltd. was established with a registered capital of 250 million yuan and its legal representative is Wang Jun. The company is 100% controlled by Huawei Technologies Co., Ltd., and its industry is research and experimental development. Its business scope includes engineering and technical research and experimental development; sales of intelligent vehicle equipment; intelligent vehicle equipment manufacturing; intelligent vehicle equipment sales.

On October 26, 2020, Huawei’s smart car business was assigned to the consumer business, and Yu Chengdong came to lead the car business.

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Neglected wearable products may be the weapon to cure your insomnia

Although the just past “World Sleep Day” once again reminded the public to pay attention to sleep through the theme of “healthy sleep, healthy longevity”, but looking around, sleep problems still do not attract enough attention.

Although the just past “World Sleep Day” once again reminded the public to pay attention to sleep through the theme of “healthy sleep, healthy longevity”, but looking around, sleep problems still do not attract enough attention.

It may sound surprising, but data from the World Health Organization in 2018 showed that 27% of the world suffers from sleep disorders, which is more than the world’s smokers combined. In China, 300 million people are affected by insomnia, which means 1 in 4 people have poor sleep and the number is increasing. However, most of the people around us don’t think of sleep deprivation as a disease until related problems such as high blood pressure, heart disease, and obesity appear.

Sleep problems are so important, not only because it can cause many potential harm, but more importantly, for most people, the quality of sleep can never be detected with the naked eye and psychology, and once a problem occurs, it has accumulated to a certain stage. Therefore, in terms of solutions, the best way is to observe data and adjust your sleep according to the rules. Therefore, sleep monitoring services are gradually attracting attention. How technology can help us improve sleep has become the focus of today’s people.

Find the best answer

To achieve targeted control and prevention of sleep problems, the best way is to conduct professional testing in medical institutions, which includes observation and treatment from different aspects such as heart rate, respiration, and brain waves. Just like the physical examination process, all-round inspection yields the clearest results.

Unfortunately, not everyone has the ability to regularly go to professional institutions to check for sleep problems. Therefore, under the constraints of time and cost, most of the time people need a service that can provide daily data monitoring and provide sleep advice. The sleep monitoring service is thus born. From the current point of view, there are three main solutions for this type of service:

1. Smart App monitoring, various apps that record the usage time and habits of mobile phones, conduct sleep guidance and monitoring;

Second, non-wearable devices, pillows with various sensors, bedside breathing monitors and other equipment for sleep monitoring;

Third, smart wearable devices, such as smart watches/bands/rings, etc., perform data monitoring.

The first one is undoubtedly the cheapest to use, but it has certain drawbacks in terms of accuracy and practicality. Medical research has confirmed that when operating mobile phones, tablets and other devices before going to bed, the blue light emitted by the screen will affect the formation of melatonin in the human body and affect sleep. In addition, sleep is only recorded by monitoring the state of the mobile phone, which is accurate. Sex will also be greatly reduced.

Both the second and third are supported by hardware, but compared with devices such as smart pillows and bedside monitors, wearable devices such as smart bracelets/watches are significantly more flexible and sustainable for people who travel frequently . At the same time, in the latter two schemes, software services similar to those in Scheme 1 will also work together, which is more valuable than pure App services.


Apple Watch

Therefore, the rise of smart wearable devices has brought a worthwhile route to solving sleep problems, but the question is: Compared with more professional medical equipment, how effective is this product worn on our wrists every day? How can products like smart watches/bands help us sleep better?

keep moving towards precision

The combination of wearable devices and medical research has been carried out since a very early time, including different directions such as sleep problems and heart problems. Professional wearable devices have long become indispensable products for many medical research. However, due to the higher cost and single function of professional medical wearable devices, it brings opportunities to consumer-level smart wearable devices to a certain extent.

Earlier this month, the Stanford University Center for Sleep Sciences and Medicine compared the Amazfit Arc bracelet from Huami Technology with the Actiwatch Spectrum watch from Philips in a sleep research report. , comparing the results in the 48-hour research interval, it is found that the Spearman correlation coefficient of the data obtained by Amazfit Arc and Actiwatch Spectrum is 0.94, and the complete monotonic correlation is +1, and the data of the two are highly correlated.

In this report, if the score of the professional activity recorder Actiwatch Spectrum is used as the gold standard for defining sleep and wakefulness, then the overall accuracy of Amazfit Arc is 99.0%±0.17%, and the sensitivity is 99.4%±0.19%. The specificity of the assay was 84.5% ± 1.9%. This data means that smart wearable devices are close to professional medical equipment in the health field and can be used as an important health reference in daily life.

In fact, in June 2018, the International Journal of Environmental Research and Public Health published a report on

Report on Sleep Monitoring Capabilities of Wearable Devices

As mentioned in the article, smart wearable devices already have high sensitivity due to algorithm optimization and close association with users. With the advancement of technology, such products will provide more reliable sleep measurement data, so they have significant research and practical application potential.


Amazfit Arc bracelet

More accurate data is inseparable from the early exploration of smart wearable products. Overseas Fitbit introduced heart rate data into sleep monitoring algorithms in 2017, while domestic Huami Technology began to try sleep monitoring on Xiaomi Mi Band 1 in 2015. With lower prices, all-weather monitoring and a more convenient experience, smart The bracelet does provide a reference data. With the upgrade of exercise and heart rate sensors, the improvement of algorithms, and the collection of more basic user data, smart bracelets are now able to provide more reliable data in sleep monitoring.

Complete sleep monitoring service

Accurate data is the basis of intelligent analysis, and today’s smart wearable devices already have the premise to help users monitor sleep. Therefore, in order to complete their own health assessment, a series of related services around data have a feasible premise, but this also brings new challenges to hardware manufacturers.

As discussed at the beginning of this article, how to improve people’s health awareness while helping people complete data accumulation requires technology companies to provide more comprehensive and systematic services.

The analysis and service of sleep data are inseparable from algorithms and breakthroughs in professional medical research. In this regard, overseas Apple and domestic Huami have made many attempts.

Apple acquired Beddit, a sleep monitoring product company, in 2017, and launched monitoring products placed under the mattress, while focusing on heart health, it mainly cooperates with Stanford University in research. According to Bloomberg, it will be available before 2020 The watch adds native sleep monitoring function.

In contrast, as one of the world’s largest-selling smart wearable brands, Huami Technology shipped 27.5 million smartwatches and wristbands in 2018, and its progress in sleep monitoring has also been rapid. Through the acquisition of Adidas’ Physical Enterprises Inc (PEI) and Zepp and other related algorithm technologies, it has been integrated into many of its Amazfit products. The monitoring of core health data is only the first step. Huami is also cooperating with Stanford University to combine sleep monitoring data and medical services to provide more specific and feasible sleep health services through software.

Amazfit Smart Watch

Among the “Top 10 Breakthrough Technologies in the World” selected by MIT Technology Review in 2019, the wearable electrocardiograph (An ECG on your wrist) is tied with “artificial meat burger” and “smart robot”, becoming the most popular Focus on the direction of the industry. There is no doubt that smart wearable devices have the potential value of human self-knowledge and self-quantification. It is foreseeable that, with the further extension of battery life, the continuous optimization of algorithms and more professional service cooperation, the smart bracelet with 7*24 hours of personal attributes and continuous monitoring of heart rate, pulse and exercise status will become a smart bracelet. A good assistant to help more people solve sleep problems.

And basic sleep monitoring and follow-up services are just the first step. Imagine, under the traditional medical system, how hospitals and doctors can monitor users’ sleep, exercise, heart rate and other core health data on a large scale and uninterruptedly, and how can they gain insight into the general human meaning contained in these data. Statistical rules, and then prescribe the right medicine.

Recently, Apple also announced an unprecedented heart research study in cooperation with Stanford. The 8-month research cycle, covering 50 states in the United States, involved 400,000 people, and sent atrial fibrillation to 0.5% of them, or 2,000 people. Wait for risk warning. The value of wearable products to all mankind is fully demonstrated. And that’s what makes technology sexy.

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Maximum ratings and characteristics
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Genesis will showcase its latest advancements in high-performance actuators at IREX 2019

Vancouver, Canada – Genesis Robotics and Motion Technologies (Genesis) announced today that it will showcase its revolutionary direct drive motor technology and innovative gear solutions for robotics applications at the International Robotics Exhibition (IREX). IREX 2019 will be held at Tokyo Big Sight, Japan from December 18th to 21st. Genesis’ booth is at W4-33.

Since entering the market with the LiveDrive® direct drive motor (LiveDrive®), the company has been developing high torque, small form factor solutions to increase productivity and reduce total cost of ownership in robotics and industrial automation. LiveDrive® provides higher acceleration and velocity and greater detent torque for direct drive actuators, eliminating the need for traditional gear and belt drives, simplifying actuator design, and significantly improving reliability.

“IREX is the world’s largest robotics trade show and we are delighted to share our latest developments and products with the robotics industry. Over the past four years, Genesis has significantly improved LiveDrive while developing next-generation gear and actuator solutions. ® product portfolio,” said Chris Di Lello, CEO of Genesis. “Through collaboration and joint development with leading robotics manufacturers and automation integrators, Genesis is better positioned to create greater value for its customers. We look forward to further collaboration with the industry at IREX 2019.”

Genesis will be showcasing LiveDrive® motors in a variety of sizes and configurations, giving visitors the opportunity to see for themselves what is smaller than traditional motors. Genesis’ product portfolio represents the highest level of performance at a third the size of existing motor technology, currently capable of acting in both axial and radial flux. Their bespoke construction also means that many parameters can be optimised according to the unique needs of customers.

Genesis’ revolutionary Reflex® Torque Amplifier gearing solution, a unique technology designed to deliver the same torque as conventional gearboxes at a fraction of the weight, will also be up for your viewing. Made from an injection-moulded high-performance plastic, Reflex® reduces the weight of robotic joints and provides a back-driveable solution for applications such as workplace robots that can be used in small businesses and commercial enterprises.

“Reducing the weight of robotic actuators is key to generating a wide range of benefits,” said James Klassen, CTO of Genesis. “For example, Reflex® torque amplifiers are very lightweight and have low inertia. Reflex® features a unique, patented design that is more robust than metal gearboxes. Higher torque density, enabling our customers to develop high-performance robots that are lighter, more manufacturable, and faster. The center output configuration allows more freedom in design to create new robot shapes. Visitors to the Genesis booth will be able to Experience its back-drive effect with ease.”

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Reconstruction of network structure and automation system of continuous casting machine based on field bus technology

In recent years, the competition in the iron and steel industry has become increasingly fierce, and enterprises can achieve further development only by continuously carrying out technological transformation, improving product quality and reducing production costs. In order to meet the needs of the market, Xuangang built two new six-machine six-strand continuous casting machines with the same model, and in the subsequent upgrading and transformation, the continuous casting machine has been upgraded to increase the flow. At present, the annual production capacity of a single machine has exceeded one million Ton. This paper mainly introduces the network structure, bus layout and main functions of the automation system after the transformation of the two continuous casting machines.

1 Introduction

In recent years, the competition in the iron and steel industry has become increasingly fierce, and enterprises can achieve further development only by continuously carrying out technological transformation, improving product quality and reducing production costs. In order to meet the needs of the market, Xuangang built two new six-machine six-strand continuous casting machines with the same model, and in the subsequent upgrading and transformation, the continuous casting machine has been upgraded to increase the flow. At present, the annual production capacity of a single machine has exceeded one million Ton. This paper mainly introduces the network structure, bus layout and main functions of the automation system after the transformation of the two continuous casting machines.

2. Overview

The 4# and 5# continuous casting machines of Xuangang Steelmaking Plant are key engineering projects of Xuangang, and its automation control level has reached the domestic advanced level. The software and hardware are mainly products of Rockwell Automation, which constitute a three-level network structure, which realizes the automatic production control, production scheduling command and product quality control of the continuous casting machine.

The system network structure is shown in Figure 1:

 

Figure 1 Control system network structure diagram

As can be seen from the above figure, the automation system of the continuous casting machine takes into account the needs of practical applications, makes full use of the resource characteristics of software and hardware, and builds a three-layer network structure, that is, the information layer, the control layer, and the equipment layer.

2.1 Information layer

The information layer should provide a network interface for the operation and maintenance of the continuous casting machine body and the plant-level computer system, access workshop-level production and management data, provide services for the data collection and monitoring of the plant-wide control system, and accept production scheduling instructions. , to coordinate the production of the whole factory. This layer is characterized by a large amount of data, but does not have high requirements for real-time performance. At the same time, in order to facilitate the interconnection of PLCs and computer systems of different manufacturers, necessary control and coordination, the TCP/IP protocol that conforms to public standards is adopted. 100Mbps rate Ethernet.

Considering the reliability requirements of industrial control and the harsh environment of the industrial site, the Ethernet adopts a redundant optical ring network, and two industrial-grade Ethernet switches have redundant management functions. One server and four operating stations of the continuous casting machine are connected to the network through the Ethernet card, and each frame of the PLC system installed with the CPU module is connected to the network through the Ethernet interface module.

2.2 Control layer

The control layer is responsible for the transmission, exchange and coordination of control data among the public PLC system, each casting strand PLC system and remote Flex I/O, and provides functions such as network programming, program maintenance, equipment configuration, and troubleshooting.

The network at this layer not only requires a stable and reliable connection, but also ensures the real-time transmission of information. ControlNet adopts the bus topology structure, the communication rate is 5Mbps, and its characteristic is that ControlNet is deterministic, which means that the I/O devices and controllers on the network communicate at a predetermined time. Every component in ControlNet has determined the communication time and duration in advance during configuration, so it is very stable and reliable, especially suitable for industrial applications with high time requirements. At the same time, in order to ensure that communication will not be interrupted, we use redundant communication media at this layer to further improve reliability.

2.3 Device layer

The equipment layer is mainly used to directly connect the main line transmission equipment, that is, the frequency converter and the soft starter, to the PLC system to which it belongs, instead of realizing control through traditional digital and analog connections. This is not only convenient and fast, but also can collect data. Data from field devices, which are configured, monitored and controlled in real time. This layer uses the Remote IO network.

The three-layer network structure makes it possible to select the appropriate communication method according to the specific application requirements of the continuous casting machine system. This network structure not only provides EtherNet/IP, ControlNet, Remote IO network connections, but also includes advanced software optimized for automatic control. interface to ensure efficient data transfer.[page]

3. System composition and function

3.1 Hardware configuration

The hardware of each continuous casting machine automation system is mainly composed of 9 sets of Rockwell AutomaTIon’s ControlLogix series PLC, 4 operation stations, 1 server and remote Flex I/O station. The main production line equipment in the transmission system is all driven by vector inverters. The water pump uses a soft starter, and the auxiliary drive equipment is controlled by the MCC. The instrumentation system is mainly composed of a rapid and continuous temperature measurement system for molten steel, a large bag and a middle bag weighing system, a mold liquid level monitoring and adjustment system, and a mold water and secondary cold water flow detection and adjustment system.

The public system of the continuous casting machine adopts a set of PLC system with an extended frame, which is used for the detection and control of the common equipment on the main table of the continuous casting machine and the part of the billet. ,control. The operation station is arranged in the main control room and the cutting operation room for monitoring, operating, processing alarm information and necessary human intervention on the equipment of the continuous casting machine. The server is used to collect production data, process, store, and transmit it.

3.2 System functions

The automation system of the continuous casting machine adopts the three-electrical integration design. All electrical control and instrument control signals are connected to the PLC. The thermal resistance, transmitter, flowmeter and other detection instruments installed on the site collect instrument data, switches, limits, etc. The equipment collects production process data and equipment operating status, and all data is imported into the PLC system. Combined with the instructions from the upper operating station, the process loop adjustment, electrical equipment sequence control and transmission equipment control are realized according to the preset program.

3.2.1 Instrumentation system

Instrument detection mainly includes rapid and continuous measurement of molten steel temperature in large and medium ladles, weight measurement of molten steel in large and medium ladles, measurement of mold water pressure, flow, temperature difference between inlet and outlet, secondary cooling water pressure, and flow measurement and adjustment of each section. In order to reduce the labor intensity of operators and improve the quality of steel billets, the continuous casting machine also collects the molten steel level of the mold, and adjusts the opening of the middle bale plug rod through the electric cylinder to keep the molten steel level stable.

The secondary cooling water distribution system has manual and automatic control functions, including water distribution, water meter setting, tracking adjustment, adjustment of water distribution correction, and Display of water flow, pressure, temperature and valve position. PLC realizes on-site data acquisition, tracking adjustment, and the operation station completes the water meter setting, water flow Display and data recording, data printing and statistical functions.

Manual and automatic control: Each flow is divided into four stages of water distribution, namely the foot roller section, the first stage, the second stage, and the third stage, and each stage has a manual/automatic conversion function. In the manual mode, the staff can change the water volume by directly setting the opening of the regulating valve on the screen of the operation station; in the automatic mode, the system will automatically adjust the water volume according to the pre-selected water meter according to the speed of the pulling speed. The water supply can be corrected at any time according to the billet temperature. The flow chart of the secondary cold water adjustment is shown in Figure 2.

Reconstruction of network structure and automation system of continuous casting machine based on field bus technology

Figure 2 Flow chart of the second cold water conditioning

Selection and modification of water meters: Dozens of sets of water distribution parameters are available for use in the operation station. The content of the parameters includes: serial number, steel type, section and water distribution ratio of each section. The operator can modify the parameters at any time to change the water distribution.

3.2.2 Electrical system

The detection and control of electrical equipment mainly include: rotation of the turntable of the large bag, lifting and lowering of the bag arm, opening and closing of the water inlet of the large bag, walking, centering, and lifting of the tundish truck, vibration of the mold, adjustment of the vibration frequency, transmission of the tension leveling machine, and tension leveling. Rolling down, dummy bar ascending, recovery tracking, stripping, storage, billet cutting to length, as well as the control of roller table before and after cutting, conveying roller table, steel turning machine, billet separator, and stepping cooling bed. The detection and control of hydraulic system, oil and gas lubrication system and dry oil lubrication system are also completed by PLC.

All the transmission equipment of the main production line is driven by frequency converters. More than 100 frequency converters are used in the transmission of mechanical equipment such as the ladle turntable and the lateral moving steel car in the continuous casting machine, and the power range is from 0.75KW to 45KW. All frequency converters are connected to the Remote I/O communication adapter through its built-in communication interface, and are directly connected to the nine Remote I/O networks formed by nine RIO interface modules, forming a transmission system based on the Remote I/O network. Considering the connection distance of the Remote I/O network and the real-time requirements of the system, the communication rate of 115.2Kbps is adopted.

The Remote I/O network works in the scanner mode, and the PLC processor establishes a serial communication chain through the RIO interface module and the remote I/O adapter. The communication interface of the inverter provides a direct and digital communication link for the network devices in the Remote I/O network. The system uses the communication interface to establish an input and output data link by configuring the I/O label of the PLC. For PLC, each inverter is regarded as a remote frame with I/O modules installed, and it is only necessary to read and write these modules to send commands to the inverter connected to it to control the operation of the equipment; It can read various data from the inverter, monitor the running status of the equipment, and transmit the data to the PLC in real time. Through the screen, the operator can provide real-time and detailed information on the display of the operation station in the main control room, and can directly operate the equipment. Even when the inverter issues an alarm and fails, the inverter can be reset in time to avoid Failure to handle it in a timely manner results in an accident. The electrical system of the continuous casting machine realizes the remote network real-time control of the transmission equipment, and enables the PLC to realize the networked digital control of the drive of the inverter. Compared with the control method, not only the real-time performance, accuracy and reliability of the system are greatly improved, but also the cost of installation, debugging and maintenance is correspondingly reduced.

3.2.3 Operation Station

According to the process requirements, the HMI screen software is equipped with the main screen, the overview of the casting strand, the overview of the blanking area, the tension leveler and the dummy bar, the liquid level of the mold, the vibration of the mold, the weighing of the big bag/middle bag, the hydraulic system, the drive There are nearly 20 pictures including device running status and PLC status. Through the monitoring of HMI, the operator can observe the operation status of the equipment in real time, modify the process parameters according to the authority, deal with the alarm events in time, and manually intervene in the operation of the equipment if necessary.

3.2.4 Command and dispatch system

Steelmaking is a complex production process. The quality of continuous casting billets is directly affected by casting conditions and process status. Even if advanced technology, equipment and technology are used, due to the characteristics of continuous casting production process, heat transfer and equipment failure and unstable operation, etc., will inevitably cause fluctuations and abnormalities in the production process, so that the quality of the casting billet will be damaged to varying degrees. Loss. The continuous casting machine needs to know the situation of the previous process in time, and the converter and refining system must also grasp the casting situation of the continuous casting machine. , Argon blowing station and other systems are jointly connected to the factory-level management network to provide data for unified coordination and command of production scheduling.

4. Application effect

The continuous casting machine automation control system of Xuangang Steelmaking Plant comprehensively integrates PLC control technology, screen monitoring technology, network communication technology and frequency conversion speed regulation technology. The automatic control of the production process completes the functions of automatic interlocking control of continuous casting production site equipment, detection and adjustment of medium parameters, data communication processing, fault alarm diagnosis and online monitoring of production conditions. After more than three years of operation and verification, the system control function is advanced, stable and reliable, which effectively improves labor productivity and reduces the labor intensity of staff. effect.

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