I. Project Overview
1.1 Introduction
With the development of China's social economy, tall buildings are increasing. Due to various factors, deformations will occur during the operation of these engineering buildings and their equipment. Such deformation should be considered as a normal phenomenon within a certain limit, but if it exceeds the specified limit, it will affect the normal use of the building and, in severe cases, the safety of the building. Therefore, deformation observations must be made during the construction and operation of buildings. In order to monitor the safety of the building during construction and use, it is necessary to observe the deformation during the construction process and during use; on the other hand, in order to carry out scientific research and provide some empirical data for future foundation design, it is also necessary Deformation observation of the building. The deformation monitoring contents of buildings generally include settlement observation, displacement monitoring and inclination deformation monitoring, etc., and the inclination and crack of the building are often caused by uneven settlement of the building, which requires the building, especially the upper level. The building is subject to settlement observation. Through the deformation monitoring, the obtained deformation observation data is analyzed to judge the operation state of the building. When an abnormal situation is found, it needs to be analyzed in time to find out the cause and take measures to ensure the construction and construction. Safe to use.
On August 7, 2009, Premier Wen Jiabao inspected and delivered an important speech at the Wuxi Micro-Nano Sensor Network Engineering Technology R&D Center. "In the development of sensor networks, we must plan for the future and break through the core technologies earlier." In the science and technology project, accelerate the development of sensor networks; "establish the China's sensor information center as soon as possible, or the 'perceive China' center." In this new discipline, China's technology research and development level is already in the forefront of the world.
At present, China, together with Germany, the United States, the United Kingdom and other countries, has become one of the leading countries in the formulation of international standards. The Internet of Things is widely used in various fields such as intelligent transportation, environmental protection, government work, public safety, safe home, intelligent fire protection, industrial monitoring, elderly care, and personal health. Experts predict that this field will develop into a high-tech market with a scale of one trillion yuan. Therefore, combined with wireless sensor network technology, the development of intelligent building deformation and settlement monitoring system based on Internet of Things, which is highly innovative and practical to promote and apply value, can greatly promote the development of Internet of Things technology, and also provide a substantial increase in the quality of China's construction. Technical support.
The system is guided by the modular platform design idea, always aiming at low power consumption, using solar panels to supply power, fully embodying environmental awareness, and the measurement network based on distributed IoT technology is also an innovation of this system. I believe that after the development of this system is completed, it will have a very good practical application prospect, and can be further improved and mature to achieve real practical application.
1.2 Project Background
The intelligent building deformation and settlement monitoring system based on the Internet of Things mainly involves background knowledge of the Internet of Things technology, wireless sensor network, building deformation and settlement monitoring method and the application of the core wireless data transmission chip CC2530. The following is a detailed introduction.
1.2.1 Internet of Things Technology Background
The Internet of Things is based on the computer Internet, using RFID, wireless data communication and other technologies to construct an "Internet of Things" that covers everything in the world. In this network, items (goods) can “communicate†with each other without human intervention. Its essence is to use the various sensing technologies such as radio frequency automatic identification to realize the automatic identification of items and the interconnection and sharing of information through the computer Internet.
At present, the industry does not have a completely unified concept for the Internet of Things, but the generally accepted concept is through radio frequency identification (RFID), infrared sensors, global positioning system (GPS), laser scanners, environmental sensors, image sensors and other information transmission. Sensing device, a network that connects any item to the Internet according to a contracted agreement, exchanges information and communicates to realize intelligent identification, location, tracking, monitoring and management.
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