| 摘要 |
An on-line monitoring sonar apparatus for a solid waste in a sewage pipeline (7), including a transmitting circuit (1), a transmitting transducer (2), a receiving transducer (3), a sound signal receiving circuit (4), an analogue-to-digital conversion module (5) and a master control module (6). By means of sound signal transmitting and receiving, signal envelope extraction and heterogeneous characteristic extraction, existence information and dimension information of the solid waste in sewage are obtained, and a result is output. The apparatus can effectively realize on-line sonar monitoring of the solid waste in the sewage pipeline (7); by means of simple and convenient sound signal continuous wave heterogeneity detection and by utilizing wide directivity, extraction of the existence information and dimension information of the solid waste in a narrow, closed and water-level changing pipeline is realized, thereby avoiding various defects of traditional visible light, electromagnetic wave and ultrasonic wave detection methods in such a usage environment; a system is convenient to be installed, used and maintained, and is low in cost; and the apparatus can be conveniently combined with a sewage smashing grille so as to form an automatic monitoring and smashing processing system for the solid waste in the sewage. |
