Research On Performance Of Front-mounted Crane Driver Behavior In Port Area

With the deepening and strengthening of economic and trade in all countries of the world,in order to meet the individualized needs of modern logistics,port transportation has become containerized.At the same time,due to the rapid development of science and technology,and the rise of network economy,the port and container loading and unloading rate are proposed.With higher requirements,it is an inevitable means to improve port competitiveness and improve port container transportation and handling capacity.The front hoist as a fluidity machine for loading and unloading and transporting containers plays an important role in port container operations.The front hoist is a direct factor that affects and determines the efficiency of front hoisting work.Therefore,it is necessary to hang the driver's work behavior on the front.Performance research to improve the operational capacity of the port container handling system.Through the analysis of the front-end hoist driver's container operation process and key nodes,the paper clarifies the meaning of the front hoist driver's operation requirements and performance improvement.At the same time,in the container stacking operation,the visual test system is used to explore the different stacking layers.The dynamic visual range indicators and the impact of visual search performance,and the use of ErgoLAB human-machine environment synchronization platform and ECG,EDA wireless sensors to record the heart rate and skin electrical response in the driver's operation,to explore the front hoist under different stacking layers Driver HRV and EDA signal change law,combined with relevant theory to analyze the experimental results,found:(1)With the increase of the number of stacking layers of the container,the driver's viewing angle changes.According to the dynamic visual field shape and visual search performance test under the set angles of 0°,25°,45° and 60°,it is concluded that: The dynamic field of view at different elevation angles is different,and as the elevation angle increases,the perimeter and area of the dynamic field of view gradually decrease;the roundness of the field of view,the smoothness of the boundary,and the symmetry,regularity,and ductility follow.Decrease,and the visual field index parameters are the lowest at 60°.At the same time,due to the limited visual field and the deepening of visual fatigue,the dynamic visual search time of the subject increased,the accuracy rate decreased,and the search performance decreased.(2)During the front-end hoisting of the driver's container stacking operation,the driver's HRV scatter plot indicators SD1 and SD2 gradually decrease with the increase of the container stacking layer,and the driver's sympathetic nerve activity is enhanced,and the parasympathetic nerve activity is weakened.The corresponding driver AVNN gradually decreases,the AVHR gradually increases,the heart rate increases,and the relative RRVC gradually increases.The mental stress and fatigue of the body gradually increase,which makes the operation time gradually increase and the performance of the operation decreases.(3)As the number of stacking layers increases,the driver's heart rate gradually increases,the EDA signal becomes stronger,and the EDA time domain analysis indicators Tonic Data,Phasic Data,and SC signal gradually increase.Meanwhile,the driver's SCR signal is NSCR.The increase in the number and the increase in SCR Amplitude indicate that the number of times the driver is excited is gradually increased,and the response amplitude of the excitation signal is gradually increased,causing the body's tension and mental load to gradually increase.Finally,based on the exploration of the visual characteristics and physiological characteristics of the driver's stacking operation,combined with the actual situation,the port management and the driver's countermeasures for improving the performance of the frontal driver's work behavior are proposed.