To build the tower crane monitoring system is so important because of the accidents increasing in construction *** lifting weight ring to detect the goods weight is a reasonable way in such a *** size should be consid...
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To build the tower crane monitoring system is so important because of the accidents increasing in construction *** lifting weight ring to detect the goods weight is a reasonable way in such a *** size should be considered in the situation to lift different weight *** the definitions of two rings of the smaller and the bigger,the detected weight curves are *** the simulation of tower crane operation,lifting weight curves are obtained and analyzed in different stages of starting,transmitting and *** experiments demonstrated that different weight level of goods should select the different size ring,and the detected weight data has its own attributes in different stages.
Having designed and achieved a sort of wireless video network system based on 3G TDCDMA,this system is applied to provide users witht function which is online browsing service of real-time natural landscape on the ***...
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Having designed and achieved a sort of wireless video network system based on 3G TDCDMA,this system is applied to provide users witht function which is online browsing service of real-time natural landscape on the *** means of erecting the video cameras on the *** and 3G network service based on H.264 video coding technique to preview post-coding data via WEB server on the *** the use of 3G network technology and H.264 video coding technology,users are able to get access to the video with higher quality,implementing the function of browsing scenery in scenic.
This paper puts forward an emergency dynamic simulation system based on computational experiments method and cellular automata modeling according to the features of mine fire emergency management. The system has chara...
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This paper puts forward an emergency dynamic simulation system based on computational experiments method and cellular automata modeling according to the features of mine fire emergency management. The system has characteristics of high performance, open and interact. The system sets initial environmental parameters to simulate fire, and records the fire parameters. Let the staff not only see the whole process of the fire spread and disaster degree of fire in specific environment, but also get fire severity assessment of every experiment. Observation of the whole process can help staff design the actual plan to solve problems, and provide the correct suggestions for promoting emergency capability to reduce casualties and economic loss.
This paper introduces theories related to 3S technology, i.g., remote sensing (RS), geographic information system (GIS) and global positioning system (GPS). We mainly discuss the application of 3S technology in the fi...
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ISBN:
(纸本)9780769549354
This paper introduces theories related to 3S technology, i.g., remote sensing (RS), geographic information system (GIS) and global positioning system (GPS). We mainly discuss the application of 3S technology in the fishing, aquaculture, marine environmental monitoring, firshing boat navigating and other fields, and survey the comprehensive prospect of 3S technology in the field of marine fishery resources study. In conclusion, we point out that the comprehensive application of 3S technology will be a trend for marine fishery modernization, and 3S technology will also provide the theoretical basis for marine fishery research.
This article presents a method to use CAD/CAM applications as a source of information for the demands the electric drive trains in a specific machine tool have to meet when executing a NC program. The electric drive t...
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This article presents a method to use CAD/CAM applications as a source of information for the demands the electric drive trains in a specific machine tool have to meet when executing a NC program. The electric drive trains limiting the machine tool dynamic can be identified and possible improvements to these drive trains can be proposed. Furthermore, the knowledge of the dynamic limitations of the machine tool and its electric drives allows to adapt NC programs specifically to this machine tool.
The concepts of rapidly and automatically obtaining the stresses found in specific human teeth and performing quick parametric studies has been a persistent goal in bioengineering. Finite element analysis (FEA) is a p...
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Sampling and reconstruction is a basic issue in signal processing. The known sampling theory in the fractional Fourier transform (FRFT) domain is based on the assumption of ideal uniform impulse train sampling. Howeve...
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ISBN:
(纸本)9780769549354
Sampling and reconstruction is a basic issue in signal processing. The known sampling theory in the fractional Fourier transform (FRFT) domain is based on the assumption of ideal uniform impulse train sampling. However, this assumption is not valid for engineering application. This paper analyzes the actual sample-and-hold system in the FRFT domain, and then constructs a new sample- and-hold system in the FRFT domain to recovery the original input signal. The result obtained in this paper realizes the application of the sampling theorem for the FRFT domain in engineering.
At present,no intellectual games beneficial to both human left and right brain development simultaneously can be observed within China,oriented to which a design of desktop balance reflection ball system is realized i...
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ISBN:
(纸本)9783037855409
At present,no intellectual games beneficial to both human left and right brain development simultaneously can be observed within China,oriented to which a design of desktop balance reflection ball system is realized in this *** main contents can be ***,with the participants' manual push torsion as the power source the direction of the handle control and the one of the game table swing movement of the system are made reverse on the principle that the cam swing exerted by the push and pull movement of the link rod is driven by the swing of the tee iron;thus,the control direction of the ball is made reverse with the one of human thinking ***,the game platform is made into a structure freely adjustable labyrinth pattern,and for convenience of operators of different heights the support unit is equipped with a height-adjustable triangle ***,several softwares such as AUTOCAD is applied to this system design in the establishment of the 3D stereo model,through which the efficiency and quantity of the design are improved and the development circle of the system prototype is thus shortened.
Water shortage and pollution are becoming more serious for population explosion and rapid economic growth. Hydrologic models, essential to watershed planning and management, can represent the complex hydrological phen...
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Water shortage and pollution are becoming more serious for population explosion and rapid economic growth. Hydrologic models, essential to watershed planning and management, can represent the complex hydrological phenomenon and is an effective tool to simulate hydrological process. This paper mainly discusses the theory of HSPF and automatic calibration with PEST. Analysis shows that HSPF is an effective tool to simulate hydrological process and PEST could calibrate the parameters quickly and efficiently and play a crucial role in hydrological simulation of HSPF. Finally this paper summarizes the factors that influence simulation result and provides some suggestions for future research.
First analyze the spherical sensor measuring's principle,a measuring instrument of power-frequency electric field based on the GPRS wireless data transmission are *** with the traditional,it has the advantage of t...
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ISBN:
(纸本)9783037855409
First analyze the spherical sensor measuring's principle,a measuring instrument of power-frequency electric field based on the GPRS wireless data transmission are *** with the traditional,it has the advantage of the power frequency field strength environment for real-time monitoring and remote *** the wireless transmission,thus overcome the defect of short transmission distance,poor real-time capability,and poor *** staff through the PC can be achieved on the field measurement of regional control Establish the power frequency electric field calculation *** simulation of the 500 k V single circuit of high voltage transmission lines in the same tower,Finally The results show that the system have higher sampling accuracy and more reliability of data transmission.
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