ACOUSTIC TOMOGRAPHY TO MEASURE TEMPERATURE

Utilizing room acoustics in the indoor tomography results in increasing the number of sound-ray path trajectories using as little hardware as possible. Motivated by these benefits, we reconstruct the temperature field from estimated travel-time of the early reflections using Acoustic travel-time TOMography (ATOM) technique. The first process of the ATOM measuring system corresponds to compiling the travel-times of the direct sound path and the series of early reflections between transmitter and receiver distributed over the test space, whose positions are known. Then, these measured travel-times would then be used as the input data for inverse algorithms to reconstruct the temperature fields.

PH1 — Acoustic tomography for indoors using one transmitter and one receiver : multiple early reflections as the propagation sound paths

In a study, we measure the relative temperature distributions within a tomographic volume (1.33 m × 1.0 m × 1.27 m). We were able to show that the maximum deviation of temperature values using ATOM technique is 0.37 °C, while the minimum one is 0.1°C. These findings demonstrate how the ATOM technique is pre-eminent to handle indoor temperature measurement.