Li Guofang

Remote monitoring system of greenhouse environment based on LabVIEW

In order to solve the problem of low automaticity and poor real time in the current monitoring approaches for greenhouse, a remote environment information monitoring and distributing system for greenhouse based on ZigBee and WEB technology was developed. By applying LabVIEW virtual instrument platform, the field monitoring system can sample real-time environmental information in greenhouse with the wireless sensor networks and simultaneously transmit it to PC through RS-232 bus. The information distributing system establishes the connection between the field monitoring system and Internet and transmits the acquisitioned information to the WEB data server. The remote monitoring system is featured with satisfactory automation, intelligence and graphics. Experiment results show that the system has higher efficiency for the real-time monitoring result, and can significantly reduce the workload for greenhouse environment monitoring. The system can be used for evaluation of greenhouse environment and bring out the basis for modern greenhouse control.

The Construction of the Secondary Vocational Teachers Training System Based on 'Cooperation between School and Enterprise'

Vocational education teachers’ training is important for vocational education development. Although China’ secondary vocational education teachers’ training system has been set up and made considerable progress, there are some problems that can not be neglected during the teachers training. In this paper, the existing problems of the secondary vocational teachers’ training are introduced, and a new training system for the secondary vocational teachers based on ‘Cooperation between School and Enterprise’ is put forward. The system consists of three training levels of ‘teacher’s professional qualifications training’, ‘teacher improving training’ and ‘the backbone teacher’s training’. The training system emphasizes the training methods of the three trainings. The system accords with the current vocational education development situation, and it is helpful for sending the teachers’ comprehensive ability.

Design for Item Bank in Exam System Based on Network

The paper analyzed the item bank of the exam system from the aspects of reliability and validity of questions, database structure and database maintenance. The paper presents the following points: the validity should be emphasized; the technical indicators in the database structure should be diverse to fully reflect the knowledge points; the system should provide a more extensive database maintenance method for the convenience of the administrator to operate.

Research on the Science and Technology Innovation Ability of Undergraduates Based on the Fuzzy Evaluation Approach

Based on establishing scientific and rational science and technology innovation ability evaluating index system of the university student, a fuzzy comprehensive evaluation approach of the university student innovation ability synthetic evaluation has been established through establishing and weighing the evaluation index set, the index weight, the reviews set, the membership matrix and fuzzy comprehensive evaluation vectors. The method has overcome the shortcoming which the sole assessment method exists. And verifies through example, we provided one kind of newly and feasible method for synthetic evaluating innovation ability of university students.

Security Analysis on Exam System Based on Network

Different from the traditional exam, the network exam has more complicated security problem. The security over the whole process of general network exam is analyzed. The security of network exam is considered in the organization and management of exam, the seriousness of exam, system accident and protocol and data transmission. Some measurements to improve network exam security are present, such as personal identification, secondary login, time synchronization and restoration of exam. New flow chart of network exam is designed with security measurements. A network exam system based on above security analyses is developed and has got a good result in application with high safety. The security methods can provide a basis for the design of network exam system.

Study of temperature automatic verification system based on computer vision measuring

The paper studies and makes an automatic temperature verification system based on computer vision in high accuracy temperature measuring to control technique, computer vision measuring technique and digital image processing. In order to acquire the higher temperature accuracy and long-term stability relative to the normal electricity measures, first-class standard mercury thermometers are adopted directly as a temperature measurement standard. The mercury thermometer indication was detected by digital camera imaging, and image processing methods are used to determine the calibration line and the exact location of the mercury column vertices, including image enhancement, image smoothing, image thresholding, edge detection, edge linear data fitting etc. After edge extraction, the system obtains the pixel location in the image of the standard mercury thermometer scale and mercury column vertex, and obtains accurate temperature values by calculation. Finally, the paper acquires the data by testing of image processing to first-class standard mercury thermometer images and the results of persons eye, contrasted and analysed with ideal temperature values, which proves the accuracy of computer vision measuring is an order of magnitude higher than of persons observation.

Research on control and management system of solar cell laminators based on network platform

As for large-scale solar cell laminators, a new type of control and management based on the network was produced. Firstly, an acquisition and control system was established upon the IPC and FP21 controller. And then, using Brower/Server (B/S) structure, the OPC technology and real-time database technology, a measurement and control system with integration of detecting was designed, which could make an integration of solar cell laminating, real-time monitoring and production management. On the condition of large-scale laminators, using network to control and manage the lamination has a broad prospect of development.