A network teaching management system is described in the *** system uses Eclipse 3.0 as a development tool and Microsoft SQL Server 2000 as its database *** using today's cutting-edge as its development framework,...
详细信息
A network teaching management system is described in the *** system uses Eclipse 3.0 as a development tool and Microsoft SQL Server 2000 as its database *** using today's cutting-edge as its development framework,based on Tomcat Server,the system implements network-bases teaching assessment and *** addition to analyze the workflow and features of teaching management system on the basis of B/S model,the core technology to develop network-bases teaching assessment and management system is *** struts structure and the model method are adopted to establish a safe and extensible distributed network teaching management *** means that the research and development of the network application system based on M-V-C three-tier structure technology is *** transplantation,amplification ability and network security are highlighted in this system.
This paper proposes a new camera calibration method with high precision and simple process for 3D measurement of stereo vision *** points are extracted from tessellated plane through harris operator,and then two camer...
详细信息
This paper proposes a new camera calibration method with high precision and simple process for 3D measurement of stereo vision *** points are extracted from tessellated plane through harris operator,and then two cameras are *** process is divided into two ***,a linear model without lens distortion is constructed in order to estimate all parameters of camera via solving overdetermined linear ***,initial values of linear parameters are optimized by introducing two-order radial distortion *** experiment results indicate that this method with high calibrating accuracy is a simple and practical *** camera calibration,we can accomplish 3D measurement in computer vision.
A six-axis acceleration signal was acquired when assembled 6 accelerometers in the field of measurement,but the installation errors of accelerometers needed to be calibrated. So,the paper presented an integrated six-a...
详细信息
A six-axis acceleration signal was acquired when assembled 6 accelerometers in the field of measurement,but the installation errors of accelerometers needed to be calibrated. So,the paper presented an integrated six-axis accelerometer used parallel mechanism as the structure of sensing element, specifically deduced the expression of relationship between six-axis acceleration vector and strains of elastic legs,and analyzed the factors affecting sensing ***,FEM simulation experimental results show the six-axis accelerometer for humanoid robot wrist has good dynamic characteristic.
In order to evaluate the technical state of tank firepower system,it needs to test some key and general target that can reflect the performance of each parts of firepower *** design idea of artificial recoiling integr...
详细信息
In order to evaluate the technical state of tank firepower system,it needs to test some key and general target that can reflect the performance of each parts of firepower *** design idea of artificial recoiling integration test device based on concurrent test method is given in the paper. The test of dynamic technical target during counter-recoil is first *** system tests the dynamic technical targets of tank weapon system during artificial counter-recoil period,and estimates the condition and gives the correlative conclusion or maintenance advice according to the testing *** system offers powerful technical methods of equipment daily maintenance and the research of prewar-inspection technology.
According to the changes in temperature and other parameters in the marine environment,we research the measurement accuracy impact factors of the full-immersion marine thermometer and its calibration *** laboratory ca...
详细信息
According to the changes in temperature and other parameters in the marine environment,we research the measurement accuracy impact factors of the full-immersion marine thermometer and its calibration *** laboratory calibration data of the conductivity,temperature and depth(CTD) instrument to amend the zero and temperature drift of the *** the same time we compare the thermometer sea-trial data to the MTL(Import) instrument *** the trial and data processing,we get that the temperature error of the full-immersion thermometer is less than 2mK.
Aiming at multi-field collaborative problems of remote measurement and control systems,a concurrency control strategy based on ICE asynchronous method dispatch adapted for remote measurement and control systems is pro...
详细信息
Aiming at multi-field collaborative problems of remote measurement and control systems,a concurrency control strategy based on ICE asynchronous method dispatch adapted for remote measurement and control systems is proposed. Concurrency control model according to networked measurement and control systems is constructed,and the implement procedure of the strategy is *** WAS press test implies that,the average response time is 0.73s on the condition that the concurrency users of the networked measurement and control system is *** ability of concurrency control of the system is improved apparently.
The motion process of permanent magnetic mechanism and dynamic characteristics of the contact arc are the major factors that determine the performance of the magnetic latching ***,due to its small and compactness,the ...
详细信息
The motion process of permanent magnetic mechanism and dynamic characteristics of the contact arc are the major factors that determine the performance of the magnetic latching ***,due to its small and compactness,the motion characteristic of the mechanism and the dynamic process of electric arc are difficult to measure *** view of the advantages on image acquisition of the high-speed camera,the test device based on high-speed camera system for relay's dynamic characteristics test is designed in this *** non-contact testing and image processing of the dynamic characteristic of mechanism and contact arc are *** the basis of the test,the dynamic characteristics of armature,contact and the arc characteristic are ***,the time parameters of dynamic process are measured by digital storage oscilloscope to validate the data testing by high-speed camera system.
The test of the modern electronic equipment has become more and more difficult because of its high complexity. Boundary scan technology,as an advanced technology for test and testability,carries on the test and fault ...
详细信息
The test of the modern electronic equipment has become more and more difficult because of its high complexity. Boundary scan technology,as an advanced technology for test and testability,carries on the test and fault diagnosis by using"virtual probe"instead of physical *** provides an integrated and standardized method for ***-Bus is the system-level boundary scan test *** can finish the test for the whole system of electronic equipment by unifying the IEEE 1149.1 board-level BST *** can locate fault on component-level and greatly improve the diagnostic ability of the *** paper describes the design of MTM-Bus Master-Module based on SOPC technology,SOPC is the Altera company's proposed a flexible,cost-effective SOC solution, which is programmable system with a flexible design approach can be cut,scalable,upgrade,and have software and hardware in-system programmable functions.
According to the property that the average refractive index and the grid period of the fiber grating are sensitive of the environment parameter,the environment parameter is changed with the drift of Bragg wavelength,a...
详细信息
According to the property that the average refractive index and the grid period of the fiber grating are sensitive of the environment parameter,the environment parameter is changed with the drift of Bragg wavelength,and the environment parameter will be demodulated through the drift of Bragg *** used wavelength demodulation technology to develop the instrument of the wavelength demodulation for fiber Bragg grating,and used LabVIEW to design the system of wavelength demodulation for fiber Bragg *** discussed the mounting method of the optical fiber sensor and the calculate method that how to eliminate temperature influence in the strain *** we given some application examples about the optical fiber sensing technology was used in geological *** a result, it is suited that the optical fiber sensing technology was used in the strain fissures.
Fluorescent Light is being widely used around the world,particularly in the field of industrial and commercial lighting as an extremely important *** of its high light effficiency,high color rendering as well as envir...
详细信息
Fluorescent Light is being widely used around the world,particularly in the field of industrial and commercial lighting as an extremely important *** of its high light effficiency,high color rendering as well as environmental protection,energy saving and other technological advantages. In this paper,the application of micro-computer automatic control technology for automatic measurement of fluorescent light spectrum is *** using the interfaceing technique of personal computer and optical-electric conversion technology,controlling Step Motor,which is used drive Monochromator,to scan light in the scope of visible light pointwise,the distribution value of luminous intensity in correspondence with each wavelength location can be *** realize the automatic measurement of spectrum. The software and hardware design of microcomputer automatic control interface for Monochromator,is the focus in this paper.
暂无评论