Multi-layer segmentation/stalk cutter device for first season of double-crop rice and control method, and combine harvester for first season of double-crop rice

A multi-layer segmented-stubble cutter device for first season ratoon rice, comprising

• a header, at least one segmenting cutter and a stubble cutter, wherein
• the header is used to cut the ear of ratoon rice and a first cutting height of the header is controlled by a first actuator;
• the at least one segmenting cutter for cutting returning field stalks is located at a lower rear of the header, is hinged on a walking chassis, and a second cutting height of the at least one segmenting cutter is controlled by a second actuator;
• the stubble cutter for cutting above stubbles of the returning field stalks is located at a lower rear of the at least one segmenting cutter, is hinged on the walking chassis, and a third cutting height of the stubble cutter is controlled by a third actuator,
• and further comprising a panicle layer image acquisition device, a cutter height detection component, and a cutter height control system;
• wherein
• the panicle layer image acquisition device is configured to acquire an image of ratoon rice,
• the cutter height detection component comprises a plurality of sensors for detecting the first cutting height, the second cutting height, and the third cutting height in real time;
• the cutter height control system determines an ear cutting height by analyzing the image of ratoon rice, a stubble stalk height is determined manually, and the cutter height control system determines a returning field stalk cutting height based on the ear cutting height and the stubble stalk height;
• and further wherein the cutter height control system controls the header to reach the first cutting height via the second actuator, the segmented cutter to reach the second cutting height via the second actuator, and the stubble cutter to reach the third cutting height via the third actuator.