Abstract: Disclosed is a quaternion multi-degree-of-freedom neuron-based multispectral welding image recognition method, comprising: using three cameras having different wavebands to obtain multispectral weld pool images, and respectively performing pre-processing and edge extraction on the weld pool images having the different wavebands obtained at a same moment by the three cameras; establishing a quaternion-based multispectral weld pool image edge model; extracting low-frequency features after a quaternion discrete cosine transform; using a quaternion-based multi-degree-of-freedom neuron network to perform classification, training and recognition on edge features of the multispectral weld pool images. Compared to traditional means, the present invention has multiple recognition information sources, strong anti-interference capabilities and high recognition accuracy.

Abstract: Disclosed is a quaternion multi-degree-of-freedom neuron-based multispectral welding image recognition method, comprising: using three cameras having different wavebands to obtain multispectral weld pool images, and respectively performing pre-processing and edge extraction on the weld pool images having the different wavebands obtained at a same moment by the three cameras; establishing a quaternion-based multispectral weld pool image edge model; extracting low-frequency features after a quaternion discrete cosine transform; using a quaternion-based multi-degree-of-freedom neuron network to perform classification, training and recognition on edge features of the multispectral weld pool images. Compared to traditional means, the present invention has multiple recognition information sources, strong anti-interference capabilities and high recognition accuracy.

Abstract: An electromagnetic field generating apparatus for treating pathological cells, in particular with tumor suppression function. The ratio of static magnetic field to alternating magnetic field is in the range of 0.5-2.5, and the total intensity is in the range up to 100 mT. It provides non-invasive low toxicity and side effects, significantly inhibiting a plurality of tumors, influencing the intracellular superoxide radical content, and promoting cell autophagy. The mechanism of action of the magnetic field is on the electron spin energy levels and consequently on free radical concentration. Additional magnetic field having frequency up to 100 MHz and intensity down to microTesla range can be also used to improve the antitumor efficacy in combination with the static as well as the extremely low frequency electromagnetic field (1-300 Hz) influencing the spin hyperfine resonance. A combination method is also provided of a power-frequency electromagnetic field generating device and a platinum-based medicine.

Abstract: A bed cover of pick-up truck including a frame structure and the skin covering the frame structure is provided. The frame structure consist of several frames and at least one rotating shaft system to connect two adjacent frames, And the rotating shaft system contains: a middle rod, a left joint, a right joint, a middle joint and a joint fixed plate; the left joint, the right joint and the middle joint are respectively provided with the rotating shaft part. The rotating shaft parts of the left joint and the right joint together with the middle joint make a rotating shaft. The middle joint is fixed with the joint fixed plate. The left and the right joint are also fixed with the middle rod to fix the whole rotating shaft system. This invention has the advantages of original design, ingenious structures, simple and durable installation, solid waterproof tape etc.

Abstract: A bed cover of pick-up truck including a frame structure and the skin covering the frame structure is provided. The frame structure consist of several frames and at least one rotating shaft system to connect two adjacent frames, And the rotating shaft system contains: a middle rod, a left joint, a right joint, a middle joint and a joint fixed plate; the left joint, the right joint and the middle joint are respectively provided with the rotating shaft part. The rotating shaft parts of the left joint and the right joint together with the middle joint make a rotating shaft. The middle joint is fixed with the joint fixed plate. The left and the right joint are also fixed with the middle rod to fix the whole rotating shaft system. This invention has the advantages of original design, ingenious structures, simple and durable installation, solid waterproof tape etc.