Guangdong Association for Science and Technology Forum site (photo by Zheng Hanlong)
It is still difficult to enjoy the construction resources of "digital city"
Speaking of "digital city", people may not be familiar with it. Wang Jiayao said that in fact, "digital city" has penetrated into every aspect of our lives. Such as urban communication network, e-government and business application systems of various departments, e-commerce, modern logistics platform, etc., have been widely used in cities.
He also pointed out that the construction of "digital city" is the beginning, not the end. At present, there are still many problems in the construction of "digital city" in China. The first is the low degree of automation of information acquisition means and the lack of dynamic update. In fact, the integration of information resources is lagging behind, and it is difficult to integrate * * *. "'Digital City' is a huge system engineering with multi-discipline, multi-industry and multi-system integration. So far, there is no complete system that meets the requirements and standards. " In addition to standards, technical constraints are also the reasons why resources are difficult to enjoy. Wang Jiayao said that at present, domestic spatial datum is inconsistent, data semantics is inconsistent, and multi-scale data is inconsistent, which makes it difficult for decision makers to make decisions. For example, when an earthquake occurs, the data reported by various departments are different, which brings great difficulties to the decision-making departments. In addition, the conceptual differences and barriers between departments due to interests also greatly hinder the enjoyment of information.
There is a lot of data, but it is useless or not well used, which is also a problem in the construction of "digital city" at present. For example, Wang Jiayao has adopted security cameras that can be seen everywhere in the city. "For example, there are about 600,000 cameras and identification devices in Guangzhou. These cameras constantly get data, and the amount of data is very large, but it is not well processed, so there is data but it is not well used. Now the network bandwidth is limited, and now our query methods are relatively backward. So far, the information retrieval rate is less than 40%, resulting in a lot of information that we can't find. "
Academician Wang Jiayao gave a special report (photo by Zheng Hanlong)
"Smart city" will permeate all aspects of human life.
In order to solve the problem of "digital city", "smart city" came into being. Wang Jiayao further explained that "smart city" is to make the city smarter. Through the Internet, the ubiquitous intelligent sensors embedded in urban objects are connected to form the Internet of Things, so as to realize the comprehensive perception of the physical city, intelligently process and analyze the perceived information by using technologies such as cloud computing, realize the integration of online "digital city" and the Internet of Things, and issue instructions to make intelligent responses and intelligent decision support for various needs including government affairs, people's livelihood, environment, public safety, urban services, industrial and commercial activities.
At present, there have been some primary application cases of "smart cities" in China, and some technologies have been accumulated. For example, the traffic management system and public transportation system are all manifestations of "smart cities". "We have some major use cases now. For example, patients can be monitored in real time during transportation to the hospital, and patients can send information in time for doctors to deal with it in time. "
Wang Jiayao further described the prospect of "smart city" to the audience: not only can sensors be installed on food to monitor food, but also different sensors can be installed on people to monitor people's health parameters and transmit them to relevant health care centers in real time; The surveillance cameras deployed in the streets can realize the intelligent analysis of image sensitivity, and interact with 1 10,19, 1 12 to realize the linkage between probes, between probes and people, and between probes and alarm system. Based on computer technology and network technology, all kinds of consumer electronic products, communication products, information appliances, smart homes and other devices are realized, and communication and data exchange are carried out through different interconnection methods, so as to realize "interconnection" among various electronic products in the home network ... Wang Jiayao said that "smart cities" are widely used, including intelligent transportation, intelligent buildings, digital medical care, public safety and so on, involving all aspects of human life. He said: "We can't clearly understand many things happening on the earth now, such as Wenchuan earthquake, Yushu earthquake, Zhouqu mudslide in Gansu and so on. So we hope to make the city smarter, so that we can predict what may happen to the earth and the city, so that we can take preventive measures as early as possible to minimize losses. "
Wang Jiayao revealed that today's technology can make sensors smaller and smaller, and even enter cells to monitor the state of cells. In the future, people's dreams and thoughts can realize the Internet of Things. As for the plot of entering a dream to get information in the popular Inception, he said that with the development of technology, this may be realized in the future.