Abstract:

Objective body temperature and breathing out gas has a great influence on the temperature and humidity in enclosed spaces. We use the temperature and humidity sensors to collect temperature and humidity information in enclosed spaces. Fusion process the collected information, calibration of enclosed space crowd density level, the actual monitoring data to compare with the calibration data. And through curve fitting, build number and linear relationship of temperature and humidity vector norm. Estimate the crowd density in the current space effectively, revealing monitoring data on the labview regulatory interface, set the crowd density level threshold, flash and sound alarm function. After test, the system design is reasonable and practical, and has a good stability, and suitable for confined space the crowd density monitoring.

Key words: crowd density estimation, temperature and humidity sensor, information fusion, curve fitting