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Intrusion (unauthorized stepping-into/staying-in a hazardous area), as a common type of near-miss, is the prime cause of the majority of incidents on construction sites including fall from heights, and striking against or being struck by moving objects. Accidents often occur because workers take shortcuts moving about the site without fully perceiving the potential dangers. A number of researches...
Tests showed that large position and pose errors would generate during the boring orientation of Rock-drilling robot, due to kinematic pairs clearances, flexibility, sensor errors, control errors and other algorithmic errors. As it's difficult to predict and compensate orientation errors by Denavit-Hartenberg method, the concept of virtual joints is introduced in this paper. The position and pose...
In order to realize the pinpoint of the work machinery in the paddy field, the receiver which can be used in the laser three-point location system has been designed. The laser receiver consists of MCU process circuit, photoelectric detection circuit, multi-channel gating circuit and differential mode amplify circuit. The photoelectric detection circuit is used to receive the laser signal, the multi-channel...
The 7000 m deep-ocean rock drill is an important equipment of prospect for ocean mineral resource. It is made up of orientation outfit, turning outfit, pushing outfit, drill tool, framework, control system and safeguard system, etc. The main parameters are accounted, and the basic structure, function, working principle and technical parameters of the 7000 m deep-ocean rock drill are introduced in...
To realizing the field working machine unpiloted, the proportional remote control system which based on the wireless data communication mode, SCM and wireless communicate protocol was designed. The field experiments indicate this system can remote control the machine beyond 300 meters (Line-of-sight),and can communicate with PC. As it can send the control data credibleness and stability, this system...
The paper analyses the characterization and reasons of non-collaborative phenomena in large-complex construction program taking 2010 Expo site construction as a case, then gives a study of framework on collaboration management system. The operation practice of collaboration management system in Expo program is analyzed later especially from the view of sub-systems. Three main conclusions are finally...
Theory studies and practice at home and abroad indicate that traditional project management shows limitations and inadaptability in dealing with large-scale complex project. So the paradigm of project management should be changed. After research on the complexity of large-scale project, analyze project management paradigm under the background of complexity science and put forward to the direction...
Focusing on the important points during the implementation of World Expo 2010 Shanghai, the general framework of integrated information system for construction and operation management is established. Key technologies of system implementation are also presented. These technologies include service-oriented comprehensive information integrated architecture, virtual reality technology based on GIS platform,...
Large-scale projects invested by the national government are more and more, some even show the characteristics of giant systems. Traditional project management can't deal with such systems. And meta syntheses is the methodology for complex giant system. The entity who uses the methodology is department of integrative system design. department of integrative system design contains the expert system...
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