Sensor is the key to smart city construction

Maybe someday in the future, we will spend this time...

Smart alarm clock: Wake up, project time on the ceiling, remotely open curtains and TV

Smart TV: touch screen TV, free internet access to weather conditions and real-time traffic conditions

Smart refrigerator: Through the mobile phone or computer, you can know the quantity of food in the refrigerator and the information of freshness and shelf life anytime and anywhere. It can provide users with healthy recipes and nutrition taboos and can remind users to regularly supplement foods.

Smart cars: Auto driving. There is a set of navigation information database, GPS positioning system, road condition information system, vehicle anti-collision system, emergency alarm system and autopilot system.

Smart computers: intelligent multi-tasking, smart acceleration, and smart energy saving.

Smartphone: It refers to a generic name of a mobile phone that has a separate operating system like a personal computer and can achieve wireless network access through a mobile communication network.

This is the scene of life presented to us by smart cities. What is a smart city?

The so-called smart city is based on Internet of Things, cloud computing and other next-generation information technology and a variety of social networking, shopping networks, Internet finance and other integrated tools and methods of integrated applications, including smart grid, smart buildings, intelligent security systems, intelligent water treatment System, intelligent transportation, etc.

Smart cities can more effectively implement city grid management and services. For example, there are more than 2 million parts facilities and more than 8 million people in Wuhan, and there are more than 600,000 incidents each year. We can intelligently collect data and intelligently analyze and effectively manage and service these parts and facilities, population, and events.

Intelligent transportation systems, through the transformation of traditional transportation systems, improve the information, intelligence, integration, and networking of transportation systems, intelligently collect traffic information, traffic, noise, roads, traffic accidents, weather, temperature, etc., thereby protecting people, The mutual exchanges between cars, roads and the environment will improve the efficiency, mobility, safety, accessibility, and economy of the transportation system, and will help protect the environment and reduce energy consumption.

At present, it is generally believed that sensors are the key to the construction of smart cities.

Songdo, South Korea

South Korea has always been at the forefront of the application of new technology countries. The country boasts the world’s fastest consumer Internet, and its culture also recognizes the application of new technologies. Therefore, it is not surprising that South Korea has become one of the first countries to try to build a smart city by exploiting the potential of the Internet. In 2001, South Korea took the lead in establishing a high-tech city where people can live in the future through the reclamation of the sea: Songdo (Songdo). In Songdo, power facilities that are fully connected to the network will not only provide city managers with information on current electricity usage, but they will also help local residents control their electricity usage. Traffic information sensors have also been pre-positioned on public roads in Songdo so as to provide the city's traffic departments with specific information on traffic conditions and allow traffic managers to intelligently reset traffic lights to reduce the incidence of traffic jams and traffic accidents. At the same time, it can optimize the distribution of traffic and people flow. These "smart roads" are connected to the central control room through the network and can play an early warning role before the earthquake.

Santander, Spain

Santander, Spain is a medium-sized town. In order to reduce air and noise pollution, Santander has begun to seek the help of technology and become one of the pilot cities for large-scale sensor deployment. By launching the "Smart Santander" project, the city has already deployed about 10,000 electronic surveillance equipment. Each device includes two radio transceivers to communicate with other devices, GPS and sensors, and to monitor urban CO2 emissions, noise, temperature, ambient light, and even parking spaces in a particular area. Each monitoring device communicates information in real time over the Internet so that drivers can find the next suitable parking lot via mobile applications or smart signals.

American city group

In the United States, several municipalities have begun installing new sensors in the city's sewers and waterway systems, which has saved them a lot of money. For example, in South Bend, Indiana, a monitoring sensor device provided by IBM is installed, which can aggregate data collected from different government departments and then convert this data into useful information. This reduced the incidence of sewer overflow incidents in South Bend City by 23% and completely eliminated the sewer blockage. South Bend City expects to be able to recover the cost of installing new technology equipment in less than two years. In Miami-Dade County, Florida, municipalities said using smart sensors can help them repair tap water accidents faster. They expect that this will save $1 million in annual funding and reduce water consumption by 20%.

Under the current wave of global smart city construction, it seems that only by arranging enough data acquisition devices in the city, that is, more sensors, can we meet the needs of smart city construction. However, at the “2014 Global Smart City Summit” sponsored by the China Urban Science Research Center Digital City Engineering Research Center, the participating experts expressed such views. “Building a smart city is not putting more sensors and collecting more data. It is Break down the island of information and reintegrate the information resources.” Before the appearance of the Internet of Things, various parts of the city, such as medical information, traffic information, environmental protection information, and housing information, were isolated from each other and were chimney-like. Form sharing. “The arrival of the Internet of Things era has made it possible to build a smart city.” Oracle experts said that to build a smart city, it is necessary to reintegrate the information of various parts of the city and share relevant information.

From this perspective, building a smart city must first break the “information island”, realize the sharing of information and data, and manage it in a unified manner so that the data can truly serve the managers. Particular emphasis should be placed on breaking the industry's fragmented, closed information architecture and highlighting the overall effectiveness of informationization. "Does not break the interests of the department, even if put more sensors, still can not solve the problem of information sharing." Some experts put forward. Taking the San Francisco Smart Parking System in the United States as an example, the government will re-allocate parking spaces by sharing information on all parking spaces in the city, implement flexible charging, and make the city's parking spaces into APP software, allowing citizens to download mobile phones. For the driver, download this software, you can find parking spaces in various locations nearby and understand the charge information. At the same time, building a smart city should start with top-level design. The top-level design of smart cities is aimed at the construction of smart cities. From an overall perspective, the overall architecture is designed to coordinate all aspects of the entire architecture, all levels, various participation forces, various positive factors and negative constraints. Consider and design. The top-level design of a smart city includes the institutional mechanism architecture, business architecture, performance architecture, information architecture, and technology architecture.

Internet of Things related technologies have been widely used in transportation, logistics, industry, agriculture, medical, health, security, home, tourism, military and other more than 20 areas, in the next 3 years China's Internet of Things industry will be in the smart grid, smart home, The digital city, smart medical care, automotive sensors and other fields are the first to be popularized and it is expected to achieve a total output value of about RMB 3 trillion.