1 smart city architecture

The architecture of smart city can be divided into three layers: information collection layer, operation control layer and leadership decision support layer.

1. 1 information acquisition layer

Using video surveillance, RFID technology and various sensing technologies, real-time measurement, collection, event collection, data capture and identification of various urban data and events are carried out.

1.2 operation control layer

After processing the collected data and event information, according to workflow modeling and arrangement, event information processing, automatically select countermeasures, notify the relevant person in charge, carry out workflow processing, retain and query historical information, monitor network equipment, etc.

1.3 leadership decision support layer

Urban managers can carry out multi-department simulation drills, information query monitoring, visual monitoring of workflow progress, historical data analysis and collaborative analysis of relevant experts to optimize urban management processes; Provide data support and experience analysis for the intelligent management of the city and the handling of various emergencies.

2 Application and content of smart city

At present, the main application functions of smart cities include intelligent transportation system, intelligent energy system, intelligent logistics and building service system, urban command center, intelligent medical care, urban public safety, urban environmental management and government public service platform.

2. 1 Intelligent Transportation System

Through the data integration of road toll system, multifunctional intelligent traffic card system and digital intelligent traffic information management system, an intelligent traffic light control, traffic guidance, travel tips and emergency management platform based on traffic prediction is provided. It is helpful to optimize the analysis of urban road network; Provide support for urban planning decision.

2.2 Intelligent energy system

Taking physical clean energy as the goal and China smart grid as the foundation, modern advanced sensor measurement technology, communication technology, information technology, computer technology and control technology are highly integrated with clean energy to form a new energy network.

It aims to fully meet users' demand for energy, optimize resource allocation, ensure the safety, reliability and economy of energy supply, meet environmental constraints, ensure energy quality, adapt to the development of energy marketization, and realize reliable, economical, clean and interactive energy supply and value-added services for users.

2.3 Smart Logistics and Building Service System

Smart logistics uses RFID, barcode, EDI, GNSS, GIS, GUID, modern network technology, pervasive computing and other technologies, and is compatible with international and national standards to build a "modern logistics" public service platform. It uses the location-based Internet of Things technology to realize the information exchange and sharing between things in the logistics process, track and monitor all aspects of logistics in real time, realize the digitalization, informationization, intelligence and efficiency of the whole logistics process, and integrate logistics, information flow and capital flow. "Smart Logistics" will be demonstrated and applied in the following aspects:

The public service platform of logistics informatization based on cloud computing: a low-cost service system for ensuring the safety of people, vehicles and goods based on the Internet of Things; Information collection system of goods distribution based on Internet of Things: customizable intelligent logistics containers based on logistics standards; Electronic license plate electronic driver's license management system; RFID-based warehousing and distribution management system-RFID-based cargo transportation monitoring system: intelligent access control system, etc.

These demonstration applications run through product transportation, vehicle scheduling, product traceability and other related links. Based on these platforms and systems, the state monitoring and intelligent dispatching of articles, containers and vehicles can be realized, and the construction efficiency can be improved.

Efficient, low-cost and safe modern logistics system plays an important role in improving the circulation management level of important commodities.

Intelligent building is the product of the combination of intelligent building technology and emerging information technology. Intelligent building organically combines intelligent computer technology, communication technology, information technology and architectural art through system integration. Through the automatic monitoring of equipment, the management of information resources, the information service for users and the optimized combination of functions and buildings, the investment obtained is reasonable, suitable for the needs of the information society, and has the characteristics of safety, efficiency, comfort, convenience and flexibility.

2.4 City Command Center

In the traditional sense, urban construction and governance usually only pay attention to a single department and its isolated goals without considering the impact on the whole city. A smart city is a single whole and can be divided into many interrelated subsystems. Each subsystem sends important event messages to the city command center, which has the ability to coordinate these events and provide guiding solutions.

2.5 Intelligent medical care

In today's aging cities, community telemedicine nursing system can effectively save social resources and serve the public efficiently. The establishment of electronic health record system and medical public service platform can solve the prominent contradiction of "difficult and expensive medical treatment" between doctors and patients.

2.6 Urban public safety

Using modern information technology, taking Internet and wireless communication technology as platforms, based on digital geographic information, combined with mobile positioning system, digital communication technology and computer software platform, it provides urban managers with a four-in-one digital management platform of sound, image, graph and text, and realizes the functions of inspection, alarm, emergency treatment, command and dispatch, supervision and supervision of urban components. Such as: food safety traceability, safe disposal of dangerous goods, disaster early warning and disposal, etc.

2.7 Urban environmental management

Real-time collection and monitoring of water, atmosphere and other resource information closely related to human living environment, timely detection and handling of various pollution incidents; With the help of advanced data mining, mathematical model and system simulation, the level of environmental management decision can be improved. Achieve the purpose of energy saving and emission reduction, and improve economic and social benefits at the same time.

2.8 government public service platform

Through e-government, public logistics services, public transportation information services and other government public service platforms, the "bulletin board" government website will be changed into a "service-oriented" business website, and the image of a service-oriented government that is run by the people will be established. Provide all kinds of consulting information and services for citizens to improve their quality of life and satisfaction.