Accurate and economical method for mobile measurement of street thermal environment

Abstract

The invention discloses an accurate and economical method for mobile measurement of a street thermal environment. The method comprises the steps: selecting representative spaces in a to-be-measured region as measurement point spaces, and measuring an outdoor thermal environment; calculating a general thermal climate index of each measuring point space; classifying the measuring point spaces based on the sky view angle factors, and calculating average values of general thermal climate indexes of different types of measuring point spaces at different moments; determining the accuracy of the general thermal climate indexes of each measuring point space at each moment; establishing a platform about the accuracy of measuring point spaces, time and general thermal climate indexes; calculating all continuous paths giving consideration to all moments in the platform; by adopting a multi-objective optimization algorithm, and by taking the accuracy and the space number of the measuring points as objectives, screening out an optimized path; and performing mobile observation of the urban thermal environment along the optimized path. According to the invention, the limitation of street thermal environment measurement in the prior art is solved, and the purpose of improving the accuracy and economical efficiency of outdoor thermal environment measurement is achieved.

Description

technical field [0001] The invention relates to the field of urban thermal environment evaluation, in particular to an accurate and economical method for mobile measurement of street thermal environment. Background technique [0002] The high temperature brought about by climate change will directly have a negative impact on the ecological environment, social economy and human health. Climate change has become a hot issue in the field of global environment and health. Especially in hot weather, the impact of urban heat islands may further impair outdoor thermal comfort, a situation that prevents people from engaging in healthy outdoor activities and creates economic and social problems for sustainable urban development. [0003] The street is the main space for people to travel and public activities in daily life, and its thermal environment level will directly affect the quality of life and physical and mental health of residents. The quality of outdoor thermal environment...

AI Technical Summary

Problems solved by technology

However, within a street, the thermal environment of the measuring point will be affected by building height, street width, vegetation, water body and other cold and heat sources (air-conditioning external units, etc.); for this heterogeneous street, the fixed observation method is used It is difficult to characterize the thermal environment of the whole street at one measuring point or a few random measuring points

In addition, although the mobile observation method can solve the problem of the number of sensors, moving from one point to another ignores the influence of temporal heterogeneity on the thermal environment; for example, when the sun suddenly shines on the measuring point, the radiation temperature may If the mutation of this point is not considered during the mobile measurement process, the high temperature will be underestimated, which will directly affect the results of evaluation and analysis, and even have a negative impact on people's health and travel

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