Additive manufacturing technology, especially metal additive manufacturing technology, is regarded as a subversive advanced manufacturing technology in the 21st century. At present, additive manufacturing equipment and technology are developing rapidly in our country, but the additive manufacturing materials are relatively lagging behind.The powder core wire material in this work has the advantages of both powder and solid wire, and at the same time avoids their shortcomings. It has the following outstanding characteristics.(1) It can give full play to the diversity of the marketable powders, and reasonably prepare the metal skin and elemental or alloying powders, which can easily obtain the target alloy components of additive manufacturing. Moreover, it can also add various functional powders such as rare earth powder, nano powder, wear-resistant powder, etc., breaking through the limitation of existing additive manufacturing materials and easy to form serialized products.  (2) Remarkable burn resistance; The "coating powder" with high melting point coating and its unique "gradient heat transfer effect" can inhibit the uneven burning of alloying elements in the additive manufacturing process, especially to ensure the effectiveness of trace modified elements, so as to ensure the accuracy of additive manufacturing components.(3) Strong engineering adaptability; Without the restrictions of powder sphericity and particle size on the fluidity of powder delivery and the uniformity of powder laying, the additive manufacturing components have good organizational uniformity, and the additive manufacturing process can be properly adjusted to obtain no obvious stratification, no defects and dense metal solid components. The technology maturity of this product is relatively high. It can not only directly use the production line of flux-cored welding wire that has been mass-produced, that is, strip method (which has been tested by an enterprise), but also use the round tube method in the initial stage or new product development (laboratory preparation, as shown in Figure 1). In recent years, more than 10 kinds of Fe-based, Cu-based shape memory alloys, 304 series stainless steel, wear-resistant modified 65Mn and other powder core wire materials have been prepared. The samples made by arc additive manufacturing equipment and laser additive manufacturing equipment have excellent performance and quality, and some products show new characteristics.The powder core wire has 1 authorized international invention patent (Switzerland) (low function loss shape memory alloy micro-nano powder core wire for laser additive manufacturing and its preparation method) and 4 domestic invention patents (preparation method of ternary alloy powder core wire with specific filling rate prepared by circular tube method, preparation method of powder core wire for additive manufacturing with accurate composition obtained by adjusting powder particle size, etc.).  1 invention patent is in substantive examination stage. A relatively complete core patent group has been formed and is still continuing to improve.  Limited by the difference between the experimental conditions of the school and the actual production, we hope to cooperate with enterprises specializing in additive manufacturing, welding materials or memory alloy production and research and development. The way of cooperation can be interviewed according to the specific situation of the enterprise.

Technological advancement and maturity: Our research group has been engaged in the application research of high-grade CNC gear machining equipment for a long time. At present, we can realize the development and application of large-scale high-grade CNC gear grinding machine, miter gear compound milling center, and powerful gear turning machine. And the group has developed a series of gear machine automatic control software such as large CNC forming gear grinding machine software, herringbone gear G code generation software, gear milling machine disk milling cutter grinding G code generation software, powerful gear cutting tool design software. The above several kinds of machine tools with great maturity have been applied in some enterprises.Intellectual property: 2 invention patents, 2 independently developed software copyrights, and 2 invention patents owned by relevant cooperative units.Type of enterprise we hope to cooperate with: gear machine tool design and manufacturing enterprise.

Comprehensive introduction3D surface detection of transparent materials is always considered to be a challenging problem. The difficulty is that most light, when it encounters a transparent material, passes directly through the surface and is refracted. In addition, the environmental background will affect the detection by imaging on the surface of the transparent material. The most obvious solution is to spray a powder or dye on the surface of a transparent material to make it opaque. However, there are various disadvantages such as subsequent cleaning, and the thickness and uniformity of the surface powder or dye can easily affect the detection.Key points of innovationA simultaneous detection system and method for 3D surface and thickness distribution of large area and thickness transparent material are provided. Based on the physical model of polarized light, an industrial camera is used to collect polarizing images of the surface of a transparent material with large area and thickness by means of a rotatable linear polarizer with a scale. The relationship between pixel gray value and rotation angle of linear polarizer is obtained by fitting each pixel of polarization image. A TOF depth sensor is used to determine the correspondence between refracted light and surface normals. Specifically, the unique azimuth Angle is determined and used to correct the polarization normal vector by combining gray code encoding and decoding with baseline method, so as to reconstruct the whole three-dimensional surface for detection. The thickness distribution of large area transparent material surface is also measured to realize thickness detection.Technical indexThe whole three-dimensional surface is reconstructed to realize the detection. The thickness distribution of large area transparent material surface is also measured to realize thickness detection.

Comprehensive introductionChina has become the country with the largest number of Internet users, while the number of people with physical disabilities reached 24.77 million in 2010. How to help these disabled people easily and quickly use the Internet has become an urgent problem. At present, the virtual mouse system developed at home and abroad is based on gesture recognition or eye tracker. Our team has successfully realized the virtual mouse system based on facial organs, which is more maneuverable, more comfortable and convenient. In addition, this virtual system has low cost, easy to be transplanted to modern information equipment, and can be used more widely.  Key points of innovationBy taking the face image through the camera and taking the nose tip as the spatial control point, the product tracks and analyzes the image coordinates of the control point, and provides it to the computer system as the user's input for simple control and operation, thus playing the function of a real mouse. The system has the advantages of low cost, strong universality and wide range of application. It can be used in PC terminal, multimedia teaching, game entertainment and other human-computer interaction fields. Technical indexAs a real mouse function.

Comprehensive introductionWith the increasing degree of aging in China, the number of elderly population in the future will be huge. Because of the aging body, many elderly people are difficult to take care of themselves. And children are difficult to take care of their parents anytime and anywhere, nursing homes and other places being crowded. In addition to the elderly who are unable to take care of themselves, many paralyzed and disabled people have lost the ability to take care of themselves in daily life and need extra manual care to meet their basic needs.Key points of innovationThrough this product, patients can obtain the items they need according to their wishes, and then the robot arm can be guided and controlled by the vision module to deliver the items to their mouth. It realizes human-computer interaction in a fundamental sense, and provides an intelligent and humanized autonomous nursing for the special population. And it replaces human care, saving human resources.Technical indexIt provides an intelligent and humanized autonomous nursing for the special population.

Comprehensive introductionAll countries in the world treat road safety as the first issue. The factors of track and vehicle equipment account for 63% of railway accidents, which shows the severity of railway equipment fault and highlights the necessity of railway fault detection. Key points of innovationThis product is an automatic fault detection system supported by the theory of feature extraction and analysis and pattern recognition. Automatic intelligent detection by machine replaces manual fault identification. Forming the characteristic pattern required by fault detection and building an efficient intelligent system, the fault detection problem of key components of railway freight car body in complex environment can be solved.Technical indexMachine automatic intelligent detection replaces manual fault identification;Building an efficient intelligent system.

Comprehensive introductionAt present, aerospace and other high-end fields have higher requirement for processing level, and fine quality defects on metal shell surface are not allowed, requiring factory products for 100% qualified rate. All of these challenge the stability of the whole process of production. How to monitor products with high efficiency and high precision and realize the detection of metal shell surface defects has become an important means of production management and quality assurance in modern enterprises. This product takes small metal shell defects as the research object, and develops a set of embedded metal shell defects visual detection system. Key points of innovationCompared with the defect detection system of PC, the system has smaller volume and power consumption, and better portability and adaptability. It can be used independently or as a functional module in small industrial system, in order to realize the efficient and real-time detection of metal shell defects.Technical indexThe system has a smaller volume and power consumption, and better portability and adaptability.

1. Technological advancementDeep learning has achieved unprecedented performance in the field of Artificial Intelligence. However, due to the complexity of deep model, its deployment in practical applications with limited computing and storage resources such as mobile devices, edge devices and real-time systems becomes a difficult and painful point. In this technology, a model compression technology based on knowledge distillation is proposed for face recognition obscured by masks. The lightweight student model obtained by learning can be applied and deployed to the edge computing platform with limited resources. 2. Technology maturityThis technology is based on knowledge distillation of depth model compression, and presents a new face recognition technology for mask occlusion facing edge intelligence. Knowledge distillation is a hot topic in model compression research in recent years. It is a simple and effective model compression technology, which has been developed and used by google, Baidu and Tencent.3. Situation of intellectual property rightsThis technology is supported by Jiangsu University and has been supported by the National Natural Science Foundation.4. Expected benefits and types of enterprises to cooperate withThe technique is an edge intelligent algorithm, which can be used for face and image recognition on edge computing platform.

1. Advanced technologyDimension reduction technology is an effective way of learning high-dimensional data representation, which is widely used in feature representation of various big data analysis to explore the essential and useful structural feature information contained in data. Aiming at high-dimensional visual data, this technique proposes a new feature extraction method considering the geometric structure information of data sample points, which can be effectively applied to a variety of visual recognition scenes. 2. Technology maturityBased on the theoretical basis of graph embedding technology, this technology proposes a new feature extraction method for high dimensional visual data. Feature extraction is a classic technique used in all kinds of big data analysis and has been widely used in the practical application of high dimensional data analysis. 3. Situation of intellectual property rightsThis technology is supported by Jiangsu University and has been supported by the National Natural Science Foundation. 4. Expected benefits and types of enterprises to cooperate withThis technique is a new feature extraction algorithm, which can be used in the analysis and recognition tasks of various high dimensional data.

Comprehensive introductionStrawberry sorting is a key link in its post-production processing. At present, our country adopts artificial sorting of strawberry for the most time. Manual sorting method is mainly based on naked eye observation to judge the grade, which lacks objectivity. The size of strawberry is different, and the surface condition is complex, so simply relying on the naked eye can not reach a good sorting effect. Because the surface of strawberry fruit is very soft and fragile, manual sorting is easy to cause mechanical damage, affecting the commodity value of strawberry. Therefore, it is of great scientific significance and social economic value to study fast, accurate and efficient strawberry automatic sorting technology and equipment.  Innovation points and Technical indexBased on machine vision and robot technology, this product can do strawberry color, shape, size identification, evaluating different grades by using the image processing algorithm. It can also use the mechanical arm to achieve automatic sorting of strawberry, reducing the damage in the sorting process, improving the efficiency of strawberry sorting and sorting quality, which has important practical significance and practical value.