Research On Digital Storage Operation Monitoring Technology For Dense Warehouse

Driven by the "Internet Plus" strategy,the intelligent storage industry is developing vigorously in our country.It is moving towards efficient operation and fast circulation,and constantly improving the level of automation,informatization and intelligence.Dense warehouse has become a widely used way of storing goods in the logistics industry because of its small area and high utilization rate of space.In a dense warehouse,it is difficult for workers to see the execution of complex work processes,such as whether equipment has arrived at a specified location,whether it is faulty,whether it needs to be charged,and current coordinate information.With the increasing heterogeneity of storage devices,storage processes become more complex and,as a result,runtimes increase,which imposes higher demands on communication and software control.The rapid development of digital technology provides new solutions for traditional warehouse monitoring system.Therefore,in order to realize the efficiency of warehouse work and visualization work,digital warehouse services based on the monitoring files of industrial communication technology OPC UA,SQL Server database,real-time Web communication and other technical means.The main contents are as follows:(1)Put forward the digital mapping technology of heterogeneous storage equipmentBased on OPC UA industrial communication protocol,it eliminates communication differences brought by heterogeneous devices and completes unified read and write operations for multiple storage devices.Using object-oriented analysis method,physical storage equipment is mapped to digital equipment objects.Through device class encapsulation,the OPC communication channel between physical devices and digital objects is established.Based on unified communication,digital devices can obtain the status information of physical devices in real time,so as to achieve the purpose of "virtual mapping real".At the same time,through the real-time communication channel,the operation of digital equipment can also reverse control of physical equipment,so as to achieve the purpose of "virtual control of real".In order to map the state attributes of different devices,the real-time mapping of OPC variable and digital object attributes is established,and the unified generic interface between them is given.In order to solve the problem of transaction life cycle inconsistency between digital devices and physical devices,async/await asynchronous programming mode is used to avoid the "callback hell" problem and realize that the control of digital devices is equal to that of physical devices.Therefore,based on the digital mapping method,the access and control of heterogeneous equipment is unified,which supports the expansion of more storage equipment,and puts forward a referable technical approach for digital storage.(2)A workflow technology for automated warehouse monitoring is proposedIn order to improve warehousing efficiency and robust control,a warehouse workflow model based on directed graph was proposed.Based on the event-driven mechanism,a workflow driven algorithm is designed to realize the sequence control,branch decision and reretry mechanism of job activities.Through the setting of multibranch activity nodes,the activities can be executed in parallel while driving the job,thus improving the efficiency of warehousing operation.The decision design of the process branch makes the process more flexible to adapt to the storage operation environment;In the process of equipment execution,if failure fails to complete on time,workflow can also re-drive the failed activities to be executed again,improving the robust control of warehousing operations.In order to make the workflow support different business scenarios and design personalized job flow conveniently and quickly,the common activities in different process operations can be abstracted into templates,that is,the code is further encapsulated and inherited,making the work flow of the equipment more clear.(3)Development and implementation of distributed monitoring system based on micro-servicesIn order to realize the distributed remote and networked storage equipment and operation monitoring,the equipment and operation objects are further encapsulated as Web services on the basis of digital modeling and attribute state mapping.Based on Http access channel,using Java Script and Ajax technology,remote call device and operation service API,so as to achieve networked warehouse monitoring.Based on Signal R,Web Socket and other network communication technologies,the server can push equipment and job information to the client in real time,which makes real-time warehouse monitoring possible.Through HTML/ Bootstrap/SVG and other front-end technologies and frameworks,the browser side monitoring view is constructed,and the device operation status is presented graphically on the Web client,thus realizing the visual Web monitoring.In summary,based on the research of digitalization,visualization,networking and other key technologies,a digital warehousing operation monitoring system for intensive storage is developed,which has been effectively verified in enterprises.In view of the key problems to be solved in the automated warehouse monitoring,the above research provides a common technical basis for the realization of the warehouse monitoring system.