Daqian Zhang

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Cab monitoring image transmission system can realizereal time monitoring of the carriage, to prevent the crime, accidentsand investigate afterwards. It is an important part of the construction of rail security system. This thesis propose a cab monitoring image transmission system based on a wireless network transmission protocol — ZigBee. Install(More)
Aiming at the problem that traditional bus body frame structure design does not take into account the problem of constraint function uncertainties, the reliability of bus body frame structure with several random variables was analyzed. Three-dimension spatial frame structure system is established by spatial beam element. The static response of structural(More)
To get the reliability index of a bus body, material yield strengths, girder cross-section areas, panel thicknesses and external loads are taken as stochastic variables by fundamental theories of structural system reliability. Considering the dynamic load coefficient in the loading conditions of bending and torsion, the method which analyses the reliability(More)
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