The Design And Implementation Of Loose Fault Monitoring System For Screw Of Material Hopper Of Vertical Hoist

The large-scale development of industrial production and the increasingly automated development of equipment, leads to a variety of large machines to be used in industrial production. Vertical hoist as a taller material transport equipment, is widely used in cement plants, quarries, coal processing plants and other industrial production environments. The vertical hoist working for a long time will cause the screw which is used to fix the hoppers to loosen or even fall off, further cause serious malfunction, result in huge economic losses and even endanger the personal safety of the staff. Manual detection is the traditional method for mechanical fault detection, but that can not make accurate judgment for malfunctions of equipment in motion only by visual observation. Therefore, it is of great significance to study the automatic monitoring system of industrial machine malfunctions.Based on the actual project this paper studied the problem of loosening and shedding of material hopper of vertical hoist and described the overall scheme and the concrete realization of the fault monitoring system of the material hopper screw of the vertical hoist.The system is based on image processing, including image acquisition, image processing,data access, client design and data communication between server and clients. According to the system program, the camera acquires the image and judges whether it is the desired image.Then the system identifies the hopper number and analyzing the shadow image of the loose screws under the light after obtaining the image, finally calculates the loose distance of the screws and stores the results to the database. The server receives the instructions sent by the clients, queries the database according to the instructions and then sends the results to the clients.The contents of the thesis include system design, image processing algorithm analysis,database design, server design and client design. System design includes hopper numbering and image acquisition scheme. Image processing algorithm analysis includes number identification of the hoppers, accurate locating of the loose screws, and identifing of shadows of the loose screws.The database design includes building MySQL database and designing data tables to store the required data. Server design includes image acquisition,image processing, data access, client management and data communication between server and clients. The client design using the VS2012 platform designs a client application that monitors the real-time status of the vertical hoist material hopper screws and queries the history records.This paper analyzes and realizes the fault monitoring system of the material hopper screw loosening of the vertical hoist, which realizes the accurate judgment of the state of the loose screw, data exchange between database and server, and data communication between server and multiple clients. The system has important significance for industrial production environment.