Relying on IoT Chongqing smart city smart technology

With the rapid development of the Internet of Things, cloud computing and cloud storage, and big data technologies, under the impetus of modernizing the three major restructures of informationization, globalization and urbanization, "smart city" as a new generation of knowledge-based social innovation environment The advanced urban management style came into being in order to solve the problems of instability of social management, disorder of city operation, imbalance of economic development and imbalance of environment construction brought about by rapid urbanization. According to the statistics released by the state ministries and local government departments, it is estimated that the number of cities in China that start smart city construction and smart cities under construction is expected to exceed 500 by 2017. At present, more than 300 cities and three major operators have signed the Smart City Construction Agreement and 290 cities have been selected as pilot cities in the national smart city. The industry forecast that with the acceleration of the construction of smart cities in various places, the total capital investment of smart cities during the "Thirteenth Five-year Plan" will reach 2 trillion yuan.

Relying on IoT Chongqing smart city smart technology

Since 2015, Chongqing Municipality promulgated the "Overall Plan for Smart City Construction in Chongqing Municipality" (2015-2020), Chongqing Municipality has clearly defined the overall construction mentality of "Wisdom Chongqing" and put forward Information Infrastructure, Social Management, Public Services, Emerging Industry Development and Network Information Security; On January 11, 2016, the Chongqing Municipal Government General Office officially released the "Internet + +" Action Plan of Chongqing Municipality (Hereinafter referred to as the "Plan"), it is planned that the output value of the city's software and information service industry will reach 250 billion yuan by 2018, the volume of e-commerce transactions will reach 1.4 trillion yuan, and 10 or more "Internet +" industry demonstration bases will be established and entrepreneurial innovations will be put forward , Artificial intelligence and other 11 aspects and "Internet +" combination.

With the coming to an end in 2016, the results of smart city construction in Chongqing are presented one by one:

It was learned from the opening ceremony of "2016 Chongqing Smart City Advanced Seminar" held on December 6 that in order to promote the smart city construction, Chongqing Municipality has promoted the comprehensive urban and rural planning database, traffic decision support system The focus of the three big data platform construction, and achieved initial results.

Chongqing City, the construction of the three major data platform, the comprehensive market system is the city's public information resources integration and application of "3 + 1 + X" system in the "1" platform, including data standards, shared data resources, software systems, Build the sharing mechanism and other major construction content. The system has been piloted in the key project management of the Municipal Development and Reform Commission and the market supervision of Liangjiang New Area. The system has obvious effects on enhancing the informatization and intelligence level of government's macro decision-making, social governance and public safety.

Urban and rural planning comprehensive database mainly utilizes the full coverage of urban and rural planning and "multi-regulation and one-plan" as an opportunity to integrate and supervise all kinds of planning data and construct a planning and management information platform covering planning and research, planning and implementation, planning and implementation management, and multisectoral sharing, Lay a "smart planning" basis.

Traffic Decision Support System integrates the relevant departments at the municipal level, the traffic flow data of enterprises, citizen travel survey data and distribution of the flow, etc., to fully grasp the traffic supply, demand and operation, in order to analyze the traffic planning implementation, traffic operation Problems, and make decisions and suggestions, laying the foundation for "smart traffic."

Intelligent Transportation: Relying on the Internet of Things big data service platform to achieve smart travel

At present, Chongqing Traffic Information Card has issued 12.32 million pieces in total, covering all the motor vehicles and drivers in the city. Chongqing has become the largest and most extensively covered area in the world and has already produced social and economic benefits in many industries. Logo integrated application of the city. As a platform and technical support, the NDRC will approve the construction of the first radio frequency identification intelligent traffic engineering research center jointly set up in Chongqing by the State and local governments.

A small card, not only to Chongqing intelligent transportation construction in the forefront of the country, but also to promote Chongqing to build intelligent transportation industry Heights. What deserves praise is that at present, the center has established synergetic innovation mechanisms with industry-academia-institutes through research and development with nearly 20 leading enterprises and research institutes in the industrial chains at home and abroad such as the United States, France and South Korea, and promoted the formation of the radio frequency identification smart transportation industry in Chongqing Heights, and "cloud platform + information management + intelligent terminal + content service" information and communication service industry cluster.

"Smart Community": to achieve a convenient life

In Chongqing, the Internet of Things has become a strategic emerging industry in the city, while Jiangnan New City is the "main battlefield" of the South Bank Internet of Things industry. The National IoT Industrial Demonstration Base, the New Industrialization Demonstration Base and the First Batch of Smart City Construction Pilot Cities and IoT Application Service Standardization Pilot Projects have all poured flowers into the southern metropolis, giving the Southwestern IOT industry an unprecedented opportunity for development. At the same time, Its wisdom to upgrade. Nowadays, in Jiangnan New City, smart life has entered every household and infiltrated into people's lives.

From the Urban and Rural Construction Commission learned that in recent years, the South Bank has been around the center of experience, e-government, smart community and smart urban management and other top ten key projects to build Jiangnan Metro's wisdom. The smart community uses technology and equipment in many fields such as home, surveillance, hospital, food, nursing and digital life, enabling residents to manage their own affairs via the Internet and mobile phones and enjoy intelligent, efficient and relaxed life. In addition to the smart community, some projects such as smart urban management, smart business district, e-government, smart healthcare and smart education have also achieved initial success. Among them, the intelligent community, intelligent transportation and other fields of rapid development of the Internet of Things applications, to provide Jiangnan New City residents covered by security, home, housekeeping, logistics and transportation for millions of riders to provide guidance, navigation guidelines, road and tunnel security and other intelligence Livelihood services.

Smart Police: Yuzhong District 12 police stations set up intelligence command city online

A number of LCD screen shows the first-line real-time police intelligence, commanders face changes in the case, the police call scene at any time, the implementation of arrest. In the past, such scenes can only be seen in the Public Security Bureau of all districts and the command center of the Municipal Public Security Bureau. Now, 12 police stations in Yuzhong District have all been established with intelligence command posts. Police station received the alarm, the police in the command room can lock the scene for the first time or transfer the real-time images, through the background to grasp the situation, accurate and timely police.

We encountered police call 110, if the scene has a camera, the police through the camera, quickly grasp the scene and send police in a timely manner. In addition, if the police did not get out of the police in time, the system will keep alerting and urge the police. Police out of the police, the rear can also monitor the law enforcement through the command room. It is reported that after a year of pilot, Yuzhong District 12 police stations all set up intelligence command room.

Police remind, the victim should pay attention to the alarm, we must try to describe the incident as accurately as possible to facilitate the police to call the local video. In addition to routine police intelligence, the loss of loved ones in the home if the loss of pets, but also to the police station to seek help, call for monitoring video.

Smart City: A New Breakthrough in Urban Management

The overall framework of smart municipal construction in Chongqing can be summarized as "1322": "1" is a large-scale municipal data center; "3" is the 3 major functional blocks, that is, the integrated supervision and management platform for digital urban management,

A ball check valve is a check valve in which the closing member, the movable part to block the flow, is a spherical ball. In some ball Check Valves, the ball is spring-loaded to help keep it shut. For those designs without a spring, reverse flow is required to move the ball toward the seat and create a seal. The interior surface of the main seats of ball check Valves are more or less conically-tapered to guide the ball into the seat and form a positive seal when stopping reverse flow.

Ball check valves are often very small, simple, and cheap. They are commonly used in liquid or gel minipump dispenser spigots, spray devices, some rubber bulbs for pumping air, etc., manual air pumps and some other pumps, and refillable dispensing syringes. Although the balls are most often made of metal, they can be made of other materials, or in some specialized cases out of artificial ruby. High pressure HPLC pumps and similar applications commonly use small inlet and outlet ball check valves with both balls and seats made of artificial ruby, for both hardness and chemical resistance. After prolonged use, such check valves can eventually wear out or the seat can develop a crack, requiring replacement. Therefore, such valves are made to be replaceable, sometimes placed in a small plastic body tightly-fitted inside a metal fitting which can withstand high pressure and which is screwed into the pump head.

There are similar check valves where the disc is not a ball, but some other shape, such as a poppet energized by a spring. Ball check valves should not be confused with Ball Valves, which is a different type of valve in which a ball acts as a controllable rotor to stop or direct flow.

A diaphragm check valve uses a flexing rubber diaphragm positioned to create a normally-closed valve. Pressure on the upstream side must be greater than the pressure on the downstream side by a certain amount, known as the pressure differential, for the check valve to open allowing flow. Once positive pressure stops, the diaphragm automatically flexes back to its original closed position.

A swing check valve or tilting disc check valve is check valve in which the disc, the movable part to block the flow, swings on a hinge or trunnion, either onto the seat to block reverse flow or off the seat to allow forward flow. The seat opening cross-section may be perpendicular to the centerline between the two ports or at an angle. Although swing check valves can come in various sizes, large check valves are often swing check valves. The flapper valve in a flush-toilet mechanism is an example of this type of valve. Tank pressure holding it closed is overcome by manual lift of the flapper. It then remains open until the tank drains and the flapper falls due to gravity. Another variation of this mechanism is the clapper valve, used in applications such firefighting and fire life safety systems. A hinged gate only remains open in the inflowing direction. The clapper valve often also has a spring that keeps the gate shut when there is no forward pressure. Another example is the backwater valve (for sanitary drainage system) that protects against flooding caused by return flow of sewage waters. Such risk occurs most often in sanitary drainage systems connected to combined sewerage systems and in rainwater drainage systems. It may be caused by intense rainfall, thaw or flood.

A stop-check valve is a check valve with override control to stop flow regardless of flow direction or pressure. In addition to closing in response to backflow or insufficient forward pressure (normal check-valve behavior), it can also be deliberately shut by an external mechanism, thereby preventing any flow regardless of forward pressure.

A lift-check valve is a check valve in which the disc, sometimes called a lift, can be lifted up off its seat by higher pressure of inlet or upstream fluid to allow flow to the outlet or downstream side. A guide keeps motion of the disc on a vertical line, so the valve can later reseat properly. When the pressure is no longer higher, gravity or higher downstream pressure will cause the disc to lower onto its seat, shutting the valve to stop reverse flow.

An in-line check valve is a check valve similar to the lift check valve. However, this valve generally has a spring that will 'lift' when there is pressure on the upstream side of the valve. The pressure needed on the upstream side of the valve to overcome the spring tension is called the 'cracking pressure'. When the pressure going through the valve goes below the cracking pressure, the spring will close the valve to prevent back-flow in the process.

A duckbill valve is a check valve in which flow proceeds through a soft tube that protrudes into the downstream side. Back-pressure collapses this tube, cutting off flow.

A pneumatic non-return valve.

Multiple check valves can be connected in series. For example, a double check valve is often used as a backflow prevention device to keep potentially contaminated water from siphoning back into municipal water supply lines. There are also double ball check valves in which there are two ball/seat combinations sequentially in the same body to ensure positive leak-tight shutoff when blocking reverse flow; and piston check valves, wafer check valves, and ball-and-cone check valves.

Check Valves

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