Three-dimensional temperature field monitoring method based on space-time condition dynamic modeling

A three-dimensional temperature and dynamic modeling technology, applied in instrumentation, design optimization/simulation, calculation, etc., can solve problems such as large error, loss, and lack of temperature field information.

Active Publication Date: 2019-07-12
PEKING UNIV
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Problems solved by technology

[0009] Aiming at the shortcomings of the above-mentioned prior art, the present invention provides a three-dimensional temperature field monitoring method based on dynamic modeling of space-time conditions, which can solve the errors in the temperature field monitoring of the existing traditional temperature field modeling method and wireless sensor technology Larger, missing or loss of temperature field information provided, and accurate and comprehensive monitoring of the stability of the temperature field evolution process

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  • Three-dimensional temperature field monitoring method based on space-time condition dynamic modeling
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  • Three-dimensional temperature field monitoring method based on space-time condition dynamic modeling

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Embodiment

[0142] Taking a grain depot in central China as an example, the dynamic monitoring of the stability of the three-dimensional temperature field during the grain storage process is realized. The temperature data during the grain storage process is collected by wireless temperature sensors and recorded as observation data where S represents the observed data spatial variable The value range of , T represents the value range of the time variable t of the observation data. In this example, S is defined as follows: the size of the grain temperature field is 45m×25m×5.4m, and the sensor network of the grain temperature field contains a total of 240 wireless temperature sensors. One sensor is arranged at a distance of 1.8 meters in the z direction, and the initial positions of the sensors in the three directions of x, y, and z of the grain temperature field are all 0 meters. The definition of T is as follows: the time interval of grain temperature data is 7 days, and there are 45 s...

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Abstract

The invention discloses a three-dimensional temperature field monitoring method based on space-time condition dynamic modeling. The method comprises: using a temperature sensor for acquiring sensing data; based on a mixing effect model framework, using a temperature field physical model based on a heat conduction mechanism and a statistical model based on space-time correlation, analyzing three-dimensional temperature sensing data by establishing a novel three-dimensional temperature field model, and using parameters in the statistical model based on the space-time correlation to dynamically monitor the temperature field evolution process through a statistical process control tool. By the adoption of the method, the problems that an existing traditional temperature field modeling method and a wireless sensor technology are large in error in temperature field monitoring, provided temperature field information is missing or lost and the like can be solved, and whether the temperature field evolution process is stable or not is accurately and comprehensively monitored. The configuration cost of the temperature field sensor can be reduced, the temperature field modeling method is optimized, and the temperature field monitoring quality is improved.

Description

technical field [0001] The invention belongs to the technical field of industrial engineering, and relates to a dynamic monitoring method of three-dimensional temperature field sensing data, in particular to a three-dimensional temperature field monitoring method based on dynamic modeling of space-time conditions. Background technique [0002] The temperature field monitoring method is of great significance in the field of industrial engineering. In recent years, the detection technology of temperature field has been widely concerned by scientific research and engineering personnel, and has been applied in many aspects such as greenhouse gas temperature field monitoring, workpiece internal temperature field monitoring, desktop personal computer temperature field monitoring, and grain storage temperature field monitoring in granaries. The dynamic monitoring technology of temperature field sensing data can provide sufficient information guidance to human beings in system desig...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 安钰王迪张玺兰帅辉
Owner PEKING UNIV
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