论文信息 - Ultrasonic signal variations caused by thermal disturbances

Ultrasonic signal variations caused by thermal disturbances

Abstract This paper presents a study of the influence of temperature (0–60 °C) on the behaviour of different ultrasonic sensors. Measurements have been carried out by means of a sensor head connected to an automatic data-acquisition system using a controlled-temperature chamber. The influences are measured and analysed from the viewpoint of possible applications of ultrasonic sensors in environments with a wide temperature range. Special attention has been given to the study of echo signal amplitude, frequency behaviour, damping time and variations of the speed of sound; where possible a theoretical analysis of the changes is made.

Ruiz Ramón Ceres | L. Calderón | T. Freire Bastos | José Martín

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