Rainfall trigger type debris flow monitoring and early warning system and method

The invention discloses a rainfall trigger type debris flow monitoring and early warning system. The system comprises an embedded microprocessor used for data processing, a camera used for collectingvideo signals and connected to the embedded microprocessor through a transform coding chip and a video capture chip, a rainfall sensor used for collecting rainfall data and connected to the embedded microprocessor through a switching value module, an earth sound and subsonic sound sensor used for collecting earth sound wave signals, and a mud level sensor used for collecting height signals of a mud layer, wherein the earth sound and subsonic sound sensor and the mud level sensor are connected to the embedded microprocessor through an AD conversion circuit; the embedded microprocessor communicates with a remote monitoring center through a 4G wireless card and a remote transmission interface respectively; a software debugging interface is formed in the embedded microprocessor which is separately connected with an ex