| With the rapid growth of global economy and the vigorous development of technology,the traditional manual inspection can not meet the large-scale production needs of workpieces.In order to improve the overall production capacity of manufacturers,the automatic inspection of workpieces is particularly important.Industrial visual inspection is gradually applied in the field of the automation inspection because of its advantages of non-contact,high reliability and high accuracy.Aiming at the actual demand of vision intelligent inspection line,a test platform for transmission and control system of visual intelligent inspection line is built on the basis of design methods for visual inspection platform both at home and abroad.The inspection system is a comprehensive test platform which integrates mechanical design,electrical design,PLC control,HMI design,OPC technology and operation optimization algorithm.It can adapt to the flexible on-line inspection of the products with similar structures.According to the actual investigation,the solutions of the transmission platform and the control system are designed separately through the analysis of the shortcomings and limitations of the existing inspection line systems.The final system solution is determined by the comparison and demonstration of the schemes.The system cyclic transmission platform is designed and built to realize on-line cyclic transmission of the workpieces.It is composed of multiple-speed chains module,roll conveyor line module and pneumatic module.The control system hardware design is divided into controller and sensor selection,motor speed control design,electrical control circuit design,control cabinet design and manufacture,and so on.This part provides hardware support to realize the control requirements of the system.The whole software development of the control system is completed.It includes PLC control program,man-machine interface software and visual processing software communication client.The PLC program is developed with the STEP7 programming software,which satisfies the overall operation control requirements of the inspection line.Human-machine interaction interface realizes user management,dynamic display,fault alarm,formula management and manual debugging on the basis of WinCC.The visual processing software communication client is developed under VS2013 by using OPC technology.It completes the integration of the Human-machine interface and visual processing information.On-site debugging is carried out in the way of the part prior to the whole.The system meets the requirements of stable operation,good human-computer interaction and strong real-time communication.Finally,through the operating test of the inspection line under different conditions,the operation impact factors of the workpiece bottom plate were analyzed.On this basis,an optimization algorithm for operation efficiency was proposed,which aims at optimizing the inspection rhythm and minimizing the energy consumption of the motor.The different test cases were selected to carry out the experiments.The test rhythms of the three tests cases were increased by 15.67%,30.26% and 22.29% respectively,and the energy consumption of motor operation was reduced.The result shows the optimization effect of the algorithm,and the inspection line achieves the goal of intellectualization. |
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