Analysis of Industrial Ethernet Application in Intelligent Transportation and Internet of Vehicles

In recent years, with the rapid development of the national economy, the automobile industry has been developing rapidly as a pillar industry. The car has become a common commodity and enters the ordinary people. In fact, any matter has developed too fast, it is a double-edged sword. The huge traffic has brought great inconvenience to the normal life of the people. On the one hand, the state is also increasing infrastructure construction (highway, bus traffic), and gradually improving the current level of traffic intelligence.

Practical problems bring great pressure to every city manager, but also bring opportunities and challenges to enterprises. The current focus of traffic problems and the main pressure of traffic come from urban road congestion. Through years of rapid development, intelligent transportation has reached a high level in related technologies and facilities such as system platform, video recognition algorithm, traffic signal control, and network support. However, the vehicle itself is the most basic source of information, and there is no effective communication between the real vehicle and the ground, the car and the car, and the vehicle. For the further development of intelligent transportation, the Internet of Vehicles will surely serve as the key development direction of intelligent transportation, and its development potential will gradually become prominent.

Current status of domestic car networking

Along with the rapid development of the Internet of Things, the concept of smart city proposes that the Internet of Vehicles technology has brought more reverie to our city managers, related enterprises and car owners. Nowadays, the trial production of many domestic automobile manufacturers has continuously turned their dreams into reality. However, how much distance does the car network have from us? Some professionals engaged in related research pointed out. As the concept of China's car networking is still in a relatively new stage of concept, and the industrial development of China's car networking has almost no shape. Therefore, market integration will continue for a long time. During this time, we are destined to send more tuition fees for the development of the Internet of Vehicles.

In fact, the biggest dilemma for the development of the Internet of Vehicles lies in the grasp of the surrounding environment. From the current application situation, our current car networking related products have solved the problem in the car very well. In fact, the problem between the car and the person is currently better solved. When we walk out of the car door, we will find that the car and the car, the car and the road, or the car and the environment are not well solved. Therefore, the current development of the domestic car networking industry is only a relatively early stage. Although there are many GPS positioning technologies and 3G mobile communication applications, most of them are independent, and various resources are not effectively integrated. In the future development, policies, funds, and technologies involving a wider range of fields will require the joint efforts of government departments, automobile manufacturers, ITS traffic integrators, and related technology manufacturers to step through the thresholds step by step.

Objectively speaking, the role of the Internet of Vehicles is probably not enough to describe it in one fell swoop. This requires a mix of various technologies to continuously develop the vehicle's information feedback capabilities, and at the same time make the city's overall management capabilities have a huge breakthrough. But today's global car network is still in a relatively early stage. There are almost few new and mature applications that realize the scale of the Internet of Vehicles.

Car network architecture diagram

From a technical point of view, the Internet of Vehicles is divided into two technical parts, namely, RFID technology based on automotive applications and ITS intelligent traffic management technology based on traffic management. However, from the car network architecture diagram (pictured), in addition to the above-mentioned vehicle-based RFID technology (sensing layer) and TS intelligent traffic management technology (application layer), there is also a communication technology (network layer). First of all, we say that RFID (sensing layer), friends familiar with RFID, are mostly aware that the biggest feature of RFID is its ability to recognize without touch. Therefore, it is possible to realize the statistics and management of the object even when the object is fast passing, even if it does not stay. This is undoubtedly the most convenient and reliable for traffic management. Secondly, for ITS (application layer), I am afraid that everyone may not be as much as RFID knows. This is the abbreviation of Intelligent Transportation Technology. It integrates the most advanced sensing technology, communication technology, data processing technology, automatic control technology and information release technology into the existing traffic control system.

Communication technology (network layer), relatively speaking, there are more contacts. Names such as 3G wireless communication, radio, Internet, Ethernet, WIFI, etc., often appear in all aspects of work and life. But for the new road traffic management model of car networking and intelligent transportation integration, although intuitively speaking, they are realized by two different systems. However, from the perspective of its work process and effect, the Internet of Vehicles is definitely not just a single network or a department, but a high-tech and efficient network working group. In the work, we must first strengthen the operation of the sensor, so that traffic, road monitors, road condition information, and even weather conditions and other aspects of information can be brought together to achieve the perfect integration of driving and auxiliary measures.

Especially in the case of extreme weather, such information exchange and management is even more important. It also enables a deeper, more abundant and timely effect on the application of information. Especially for the current road conditions are increasingly complex. Under the trend of increasing vehicle ownership, the optimization of urban transportation needs to move toward a more timely, more accurate, and more macroscopic management direction.

For the individual vehicle, the introduction of the Internet of Vehicles technology can not only make the vehicle more smooth during the passage, but also greatly improve the information level of the vehicle itself and the information exchange level of the vehicle. This includes both the exchange of vehicle data and the communication between people. Under the support of such technology, whether it is the vehicle's safety management capability, vehicle condition management capability, or the vehicle's interactive and entertaining applications, it is also a very big supplement.

It is in this two modes of static and dynamic, coupled with the role of a stable and efficient communication network, traffic management is about to enter a new era.

Industrial Ethernet is important to car networking

Some people may ask that the communication between the car network and the ground, the car and the pedestrian, and the car and the car are all three mobile operators (telecom, mobile, China Unicom) cellular wireless communication technology (GSM\3G) and satellite positioning GIS technology. (GPS, Beidou) solution. How can it be related to Industrial Ethernet? We first understand one of the key technologies for getting off the Internet. "Networking and interconnection technology" specifically includes some parts.

1 sensor network

The main purpose is to transmit the vehicle and pedestrian information to the information center through wireless communication and satellite positioning technology.

2 node information interaction

It is mainly the exchange of information between the main node information of vehicles, roads and pedestrians.

3 car networking and integrated network interconnection

Mainly the Internet of Vehicles itself is interconnected with public information networks (such as urban ITS information centers, operator networks, public security professional networks, etc.).

4 network security and reliability

Mainly in the car network a large number of wireless communication technology network security issues; and front-end communication equipment itself stability.

In fact, cellular wireless communication (GSM\3G) only completes a small amount of networking work on vehicles and pedestrian sensors. Vehicles, people, roads and other information need to use wireless technology in the front-end collection, but also need a lot of wired communication technology, including industrial Ethernet technology. Industrial Ethernet technology exists directly or indirectly in the vehicle networking technology such as "sensor networking", "inter-node information interaction", "network security and reliability", "vehicle networking and integrated network interconnection".

For example, in the sensor network, the carrier wireless communication (3G communication) is mainly used, and the communication infrastructure device is actually a wireless base station and a repeater. Although the data communication between the base station or the repeater and the operator center does not use the industrial Ethernet technology, the industrial Ethernet technology is often used in the monitoring data communication between the operator monitoring center and the base station or the repeater device.

The main reason is that the general base stations are installed outdoors, and even many in the wild, the environment is very complicated (high temperature or low temperature, high air humidity, large electromagnetic interference). Unattended, maintenance is extremely inconvenient. Therefore, in order to ensure the normal operation of the base station equipment, there will be a large number of monitoring equipment (such as camera, infrared, standby generators and other equipment) through the industrial switch, serial port server, serial port to E1 and other industrial communication equipment with reliable performance and stable equipment as the front-end equipment. The data is collected and communicated with the operator monitoring center to ensure that the relevant technical management personnel can monitor the working status of each base station in real time and accurately. In case of emergency, the information can be known in advance and processed in time to maintain the normal and efficient operation of the wireless base station.

In terms of "inter-node information interaction" and "vehicle networking and integrated network interconnection", from the application point of view, it refers to the effective detection and monitoring of road vehicle driving behavior, traffic flow, pedestrian abnormal behavior, and timely release of road traffic information ( For people, cars, on-site roads). In a broad sense, car networking is a wide-ranging interactive communication of information between cars, people, roads, and public information platforms. It involves intelligent traffic systems such as urban traffic and traffic model control systems, high-definition electronic police systems, and high-definition bayonet systems. In recent years, electronic police and bayonet systems have developed at a high speed. In terms of application, the electronic police requires that in addition to the red light capture, the driver behavior test (smoking, telephone, seat belt) and the front passenger seat belt detection are gradually developed; in addition to accurately capturing the identification model and license plate information, the high-definition bayonet system can It is also necessary to gradually photograph the facial features of the front passengers. This is a technical requirement for front-end intersection cameras. While the camera's video detection technology and camera IP development, the camera's pixels (300w\500W\800w) are constantly added to obtain clear video images. Therefore, the requirements for connecting the communication devices such as cameras and detectors to the front intersection are getting higher and higher. Under normal circumstances, ITS industry integrators prefer the industrial Ethernet switch solution when they use this type of intersection communication equipment. The main reason is that the industrial Ethernet switch itself is easy to install (rail type), environmental adaptability (high temperature, humidity, anti-interference), which solves the problem of communication equipment stability; the number of industrial Ethernet switch ports is moderate 4 ( Generally 5-10 ports), high bandwidth (supporting Gigabit), photoelectric flexible conversion (supporting optical port, single mode multimode optional, single fiber and dual fiber optional), etc., which solves the problem of camera access and Actual problems such as background communication and uplink port bandwidth pressure.

In "Network Security and Reliability", industrial Ethernet switches are designed and manufactured to provide a secure and reliable Ethernet communication network for industrial communications. Industrial Ethernet guarantees network architecture and network data security through a unique ring network communication protocol (such as Sanwang Communication SW-RING ring network communication protocol) and various network security protocols; and equipment in industrial Ethernet switches in product design considering industrial environment The various complex environments (high and low temperature, high humidity, corrosive, high interference, vibration) may work properly for the equipment, and all targeted design solutions to ensure the reliability of the industrial Ethernet switch equipment itself.

Industrial Ethernet switches are not as widely used as ordinary communication devices (such as mobile phones and commercial switches), so that everyone can directly pay attention to them. In fact, it is more like a behind-the-scenes hero, silently working at the forefront of the entire intelligent transportation network communication.

At last

Shenzhen Sanwang Communication Technology Co., Ltd. is a high-tech company focusing on R&D and production of industrial communication network products. It is guided by technological innovation and keenly grasps the needs of the industry. Various industrial communication products have been widely used for transportation, electricity, coal, etc. Multiple industries. We are committed to becoming a world-class industrial communications expert, providing customers with high-performance and cost-effective serial communication, serial device networking and industrial Ethernet switch "one-stop" overall communication solutions. At the same time, combined with the characteristics of Sanwang Communication, he made his due contribution to the development of vehicle networking technology and realized corporate social values ​​and responsibilities. Adding wisdom to smart transportation and smart cities!