Detection of Odorous Gas Content in the Air Based on Ultrasonic Wave

摘要

This paper aims to develop a high-precision method for identifying the gas content in the air. Considering thefeatures of ultrasonic wave, an ARM-system was established to detect the content of sulphur hexafluoride, agas denser than the air. The theories, hardware and software of the system were introduced in details. Then,the system performance was verified through tests on sulphur hexafluoride leakages under the sameenvironment. It is proved that the system can identify the sulphur hexafluoride content in the air with a highprecision. With the development of computer, communication and network technologies, the proposed systemwill have broad prospects in the detection of gas content.