U-shaped channel deformation precision monitoring system based on wireless sensor network

Abstract

The invention discloses an ultrasonic chromatography flow field imaging method and device. The device is mainly composed of a hardware system and a corresponding software module. The hardware system mainly comprises a ZigBee control transmission node, a ZigBee data acquisition node, a temperature and humidity sensor, a displacement precision sensor, an adaptive three-axis mounting rack, a solar panel, a matched lithium battery and an upper computer. The software module of the system is divided into two parts, one part is software corresponding to an upper computer, and the other part is a program embedded into a ZigBee node. The system can completely meet the requirement for precise monitoring of U-shaped channel deformation, is flexible and diverse in interface, is rich and standard in external expansion, can carry various types of sensors, can build a wireless network by itself, has a network fault self-repairing capability, and achieves information exchange with a remote control center and system control through the mobile internet; and meanwhile, a solar cell is carried according to the used external environment, an embedded system is developed by utilizing a single chip microcomputer to realize an energy supply management distribution strategy, and self-sufficiency of energy supply is realized.

Description

technical field [0001] The invention relates to a wireless sensor network deformation monitoring system, in particular to a U-shaped canal deformation precision monitoring system based on a wireless sensor network, which belongs to the technical field of deformation precision monitoring. Background technique [0002] With the rapid improvement of social productivity, high-rise buildings with different shapes and functions, highway bridges, reservoir dams and other new buildings have sprung up one after another. However, behind these seemingly beautiful high-standard buildings, more and more Building safety issues have begun to enter the public's field of vision and have gradually attracted more and more attention. In the various construction safety accidents that have occurred, no matter what the cause is, without exception, it will cause immeasurable losses to people's lives and properties. Therefore, it is becoming more and more important to take precautions and ensure th...

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Problems solved by technology

[0007] First, the U-shaped canal monitoring requires high accuracy: Compared with urban engineering surveys and other work, the accuracy of U-shaped canal deformation precision monitoring is very high, the minimum is not less than 1 mm or the relative accuracy index is not less than 10-6 orders of magnitude, It is very necessary to select a precision limit that meets the requirements. If the threshold is set too high, the complexity of the monitoring work will increase, and the corresponding time and money will be increased; too low precision will reduce the system performance. Sensitivity increases the difficulty of relevant deformation analysis, and at the same time, the monitoring error will also increase, which ultimately makes it difficult to obtain ideal and correct conclusions; if it is specific to the present invention, the greatest reliance on appropriate high-precision requirements is high-precision sensors. The most important requirement is that in the process of collecting various physical quantities, the selected sensors must meet the required data collection on time and quantity, and must also meet sufficient accuracy requirements; the data exchange and command feedback through the wireless network are also There can be no wrong or missing codes;

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