Tongji University is one of the first comprehensive universities under 211 and 985 key construction. The university has 38 colleges and departments, 76 undergraduate majors, covering 10 disciplines including engineering, science, medicine, management, economics, philosophy, literature, law, education and art.

There are 3 national first-class key disciplines, 7 national second-class key disciplines, 3 national second-class key disciplines (fostering), and 17 first-class disciplines in Shanghai universities. It has 3 national key laboratories, 1 national engineering laboratory, 1 national collaborative innovation center, 5 national engineering (technology) research centers and 28 provincial and ministerial key laboratories and engineering (technology) research centers. 

Tongji University has built the world's largest "Multifunctional Vibration Experimental Center", China's first "Ground Vehicle Wind Tunnel Center" and China's first "Comprehensive Test Platform for Urban Rail Transit". "It has also built a number of major scientific research platforms, such as the first "undersea observation research and experimental base" in China, and has successively undertaken a series of major national special projects and major engineering scientific research challenges. Successively undertook a series of major national special projects and major engineering research and development, and achieved a series of landmark scientific research results such as the key technology of large-span bridges, structural seismic disaster prevention technology, intelligent induction of urban traffic, urban sewage treatment, new energy vehicle research and development, home-made smart greenhouse, ocean drilling, atrial fibrillation molecular genetics.

 

        1、Passive RFID-based building security detection technology

Overall project description.

In this project, the health of the building structure is tested, and the deformation degree of different structures is monitored to evaluate the damage degree and performance of the building structure. In order to overcome the disadvantages of traditional monitoring methods, such as poor real-time performance, high cost and inconvenience of collection equipment, this project adopts passive RFID strain sensors to monitor the corresponding structures in different deformation states. New performance evaluation indexes and systems are proposed, which can greatly reduce the equipment cost and speed up the performance evaluation of the corresponding structure, thus improving the decision-making efficiency.

Technical innovation points.

This project applies passive RFID sensors to the health of building structures. Traditional building safety monitoring mostly uses resistive strain gauges to accurately monitor building structures, but they must be wired, which brings a lot of inconvenience to the monitoring. The passive RFID sensor designed in this project overcomes the shortcomings of the traditional building safety monitoring method, such as poor real-time performance, high cost of acquisition equipment, low reliability and poor practicality, etc. The passive RFID strain gage sensor senses and records the deformation process of the dampers, which can greatly reduce equipment costs and improve the engineering application value of such strain gages.

The passive RFID strain sensors designed in this project are metal-resistant. Considering the wide application of the RFID strain sensor, it also requires the metal resistance of the RFID strain sensor.

The passive RFID strain sensor designed in this project is only sensitive to single direction (not sensitive to deformation in unrelated direction). In order to overcome the measurement error caused by the Poisson effect in engineering applications, which is caused by the mutual influence of horizontal and vertical strain.

 

        2、Integrated monitoring system for multi-movement parameters of large flexible components

The method is different from the traditional multi-sensor networking method in that it uses a full fiber-optic grating sensor network to obtain discrete-point time-varying curvature information on the surface of a large deformed elastomer and reconstructs the elastomer spatial position and the velocity at each moment based on differential geometry knowledge. Displacement information, and then the spatial acceleration is derived by the numerical difference algorithm to realize the continuous measurement of time and spatial multi-motion state parameters. At the same time, the key experimental techniques such as encapsulation and calibration of the fiber-grating sensing network based on null/wavelength division multiplexing are systematically studied, and the corresponding sensing error compensation and calibration methods are discussed; through the support of this project, a large number of experimental verification and system integration work has been carried out, and the validity of the method has been verified through verification experiments and test work. On this basis, the principle prototype and experimental system of continuous multi-motion state parametric fiber grating sensing perception network have been built. It provides a new solution and technical means for the effective solution of the engineering problem of multi-motion state monitoring of large flexibility structure.

 

        3. Aquaculture bait video monitoring and automatic control system based on motion platform

This project is aimed at the bait delivery control of aquaculture bases, developing simple and easy-to-operate motion platform feeding device - automatic bait boat, and automatic baiting control system based on image processing technology and bait video monitoring technology, to achieve automated bait feeding, bait conservation, protection of the aquaculture environment, improve the efficiency of breeding personnel, and improve the automation of bait delivery level. . Automatic baiting boat can be used as a water quality testing sensor carrier, the relevant data through wireless communication directly into the server database.

This project develops and studies an automatic baiting and water quality monitoring control system and method for serving aquaculture, which integrates the application of computer vision and wireless network control technologies, and consists of front-end part, transmission part and main control equipment. It is characterized by the system with underwater bait remaining situation feedback control, and combined with baiting experience set feedforward control of integrated baiting automatic control algorithm, to achieve uniform bait delivery, and improve the system speed. The underwater bait real-time video monitoring module obtains the picture of the bait remaining condition, transmits it to the upper computer, and the residual bait detection algorithm processes and analyzes the picture of the bait remaining condition to obtain the residual bait remaining ratio. The machine reads the data display from the server; the main control device can directly perform video monitoring, recording, playback and other operations, and also has network transmission function, which can realize network remote management. The bait control system in this invention is a feedback closed-loop system, to achieve accurate automatic bait delivery, so as to avoid the bait waste caused by putting too much or put too little and cause excessive hunger of the fish. It also monitors the water quality and the growth of fish and shrimp, which greatly improves the automation of aquaculture.

 

        4. Fuel cell drone "Leap One"

Overall project description.

The sustainable development of energy and environment has become an important consideration for the development of aviation industry. The adoption of new energy-powered aircraft design is one of the optimal solutions. In December 2012, Tongji University designed and successfully flew China's first fuel cell-powered UAV, "Feiyue-1", which has a maximum takeoff weight of 20 kg and a wingspan of 5.5 kg. After successive improvements, the drone has a maximum takeoff weight of 20 kg, a wingspan of 5 meters, a stall time of up to 5 hours, a ceiling of 2,000 meters and a payload of 2 kg. There is no noise or harmful gas emissions. It can be widely used in many fields, both military and civilian.

Technical innovation points.

1) Fuel cell powered, no environmental pollution, no infrared radiation.

2) The stall time is more than 10 times longer than ordinary electric drones.

Preliminary intent to trade by offering products at $500,000 per frame.

 

        5、Development of gene mutation diagnostic kits

Overall project description.

In this project, a special TB-ARMS gene mutation detection technology is used to improve the sensitivity and specificity of gene mutation detection by more than ten times compared with the existing technology, so that blood samples can be used for detection, and multiple point mutations can be detected simultaneously, simplifying the operation process and saving costs. The objective of this project is to develop a gene mutation detection kit with high sensitivity and specificity for blood and tissue samples, which can be used for clinical guidance of targeted drugs for personalized drug administration, and to promote its application.

Priority use of industrial areas and local regions.

The priority industrial fields for the use of the kit are the top three hospitals in China, and the priority areas for promotion are Shanghai and the surrounding areas.

Preliminary intent to trade by.

We have designed a complete framework in terms of financing and development scale. Among many different types of cancers, lung cancer has the highest incidence rate and colorectal cancer has the fourth highest incidence rate. After completing the construction of the mutation testing platform for lung cancer and colorectal cancer, we will expand the technology to other major cancers. At present, we have finished the research and development of EGFR, K-ras and Braf mutation kits.

The total investment of the project is RMB 38.928 million, divided into three phases.

Phase 1: To be completed in approximately 1.5 years, RMB 112,228,000 will be required. This phase will focus on plant construction and completion of pre-clinical work.

Phase 2: To be completed in approximately 1 year, it will require a capital investment of RMB 21.8 million mainly to conduct clinical trials.

Phase 3: To be completed in about one year, a total investment of RMB 7.9 million is required, mainly for obtaining product registration certificate and production license, and entering the market to achieve sales revenue as far as possible.

 

        6. Preparation technology and application development of artificial microstructure flexible piezoelectric polymer film.

        Flexible piezoelectric polymer film preparation techniques.

We have two main technologies for flexible piezoelectric polymer films, one of which is a low cost, high value-added polypropylene based piezoelectric film and the other is a high performance PTFE based piezoelectric film for harsh working environments.

(1) Polypropylene piezoelectric film preparation technology.

Emfit Finland is currently the only manufacturer capable of mass producing functional polypropylene (PP) piezoelectric electret films using a two-part process: microporous film preparation and electro polarization. In the microporous film preparation stage, the polypropylene resin is melted and blended with inorganic mineral granules (e.g. CaCO3 and TiO2) and extruded into polypropylene and mineral particle composite sheets. Corona polarization is used in the electro-polarization treatment stage. One of the characteristics of this production technology is the expensive production equipment (the price of the complete equipment is more than 30 million RMB). Our technology is characterized by the use of inexpensive commercial polypropylene packaging materials as raw materials and the use of an independent IPR multiple compressed gas expansion process to control the microstructure and electromechanical properties of the film to obtain a high activity polypropylene piezoelectric electret film. The technology involves a complete set of production equipment at a price of about 50 to 1 million yuan, while the product's functional film is much more active than the Finnish commercial film, up to 50 times. Our process is simpler and more efficient than the technology used by Emfit Finland. The typical piezoelectric coefficient d33 of polypropylene based piezoelectric films obtained with this technology is in the range of 200-400pC/N, thickness ~80µm, bulk density ~330kg/m3, acoustic resistance ~0.03MRayl. Figure 2 shows the polypropylene based piezoelectric films and piezoelectric elements we have prepared.

(2) Polytetrafluoroethylene piezoelectric membrane preparation technology

The preparation technology of PTFE piezoelectric film has two outstanding features: (1) it is continuous production technology; (2) PTFE piezoelectric film can be applied in a high temperature environment, even at extreme temperatures of up to 200oC, the piezoelectric coefficient d33 can be as high as 1000pC/N. Compared with the polypropylene based piezoelectric film preparation technology, the disadvantage is the high cost of raw materials.

        Flexible thin-film speaker preparation technology.

We have a loudspeaker production technology that is ultra-thin (~0.2mm), ultra-light, flexible, and directional, etc. This technology can be widely used in consumer electronics, wearable devices, background music, and conference systems. This technology can be widely used in consumer electronics, wearable devices, background music, conference systems, and other applications.

 

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