China's ultra-high reliability, ultra-low latency (uRLLC) application scenario has been the world's leading 5G technology. “Economic Information Daily†reporter recently learned from the opening of the new Guangzhou Metro line that the Guangzhou Metro Line 14 Knowledge City branch has achieved the goal of the world’s first full-car 30-channel high-definition video surveillance and smooth image-free scene. It is reported that this Guangzhou subway to achieve this technological breakthrough is the use of a new generation of wireless communication technology developed by the Guangdong New Coast Line Corporation, a global leading level, namely EUHT ultra-high speed wireless communication technology. In this regard, industry experts said that with the application of 5G technology in the fields of subway, high-speed rail and smart manufacturing, China's relevant market has ushered in trillions of outlets.
The high-definition video surveillance of subway cars has been a problem in the global subway operation. The important reason is that it is difficult for the vehicle-to-ground wireless communication system to provide high-reliability, low-latency large-bandwidth communication when the train is moving at a high speed. The car video can only be transmitted back to the ground monitoring center with a small amount of video images. In the records and afterwards inspection, it is not real car video real-time monitoring, and it cannot be disposed of in time. It does not form sufficient deterrent force against illegal acts.
EUHT ultra-high-speed wireless communication technology solves the problem of high reliability, low latency, and large-capacity wireless communication transmission under high-speed mobile conditions. On the same day, the reporter found inside the compartment of the Knowledge City branch line of the Guangzhou Metro Line 14, four high-definition cameras were installed in each carriage, 24 high-definition cameras were installed in 6 carriages, and 3 HD cameras were installed in the cab at the other end. Cars inside and outside the vehicle to achieve 30 HD video without dead angle monitoring.
In January 2017, EUHT5G technology has been implemented in the Beijing-Tianjin inter-city high-speed rail installation and deployment. Under the high-speed rail environment in which the application of wireless communication technology is most difficult, 120 km of full-line pull-through applications have been implemented. "We did not evade the world's problems. Instead, we seized the core challenges of 5G technology, selected a completely different R&D path from the current mainstream manufacturers, and directly cut into the ultra-high reliability, ultra-low latency uRLLC application scenario, and through the commercial application of the Guangzhou Metro, The world’s first 5G high-reliability, low-latency industrial wireless communications industry is ahead of its time,†said Chen Fenghua, general manager of New Shoreline.
According to industry experts, EUHT5G technology has been put into commercial operation on the Guangzhou Metro, marking the EUHT5G technology independently developed by China and has overcome the key challenges of 5G technology. Especially in the most difficult ultra-high reliability, ultra-low latency application scenario of 5G, China has already taken the lead in the world.
At present, all countries in the world are contending for the dominance of the next-generation wireless communications 5G technologies. The development and standardization of 5G technologies have been significantly accelerated and the competition has become increasingly fierce. From an expert's point of view, the reason why 5G technology is praised as a revolution is because 5G communication has to enter the industrial production field and support the networking of cars, industrial interconnection, and high-speed railways. This is another 5G typical scenario: ultra-high reliability, ultra low latency (uRLLC) application scenario. It will realize high-reliability, low-latency, low-retransmission, and high-capacity wireless communications, thereby supporting the full application of wireless communications in the industrial field.
The relevant report shows that it is expected that by 2020, the scale of base stations in China will reach 100 billion, and the overall market prospect of 5G industry is very broad. It is expected that by 2030, 5G will drive direct output of 6.3 trillion yuan and indirect total output of 10.6 trillion yuan.
Incremental Encoder is commonly used, and Absolute Encoder is used if there are strict requirements on position and zero position. Servo system should be analyzed in detail, depending on the application situation. Commonly used incremental encoder for speed measurement, which can be used for infinite accumulation measurement; Absolute encoder is used for position measurement, and the position is unique (single or multiple turns). Finally, it depends on the application situation and the purpose and requirements to be realized.
Incremental Linear Encoders,Linear Optical Encoder,Linear Position Encoder,Encoder Bearing Tester
Yuheng Optics Co., Ltd.(Changchun) , https://www.yhenoptics.com