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Crane safe operation , and improve handling efficiency , strengthen the monitoring and diagnosis of electrical faults as the goal , the use of monitoring and management technology , to carry out the garbage hydraulic bridge crane monitoring and management system . Siemens S7-300 series PLC and configuration software WinCC design monitoring and management system , monitored by a monitoring host three sets of crane PLC system can not only reduce the operation personnel work intensity , increase productivity , and real-time monitoring of equipment operating conditions and the alarm failure to improve the safety performance of the crane system and operating personnel , and provide historical data query , bring great convenience for the maintenance and repair . This article first analyze the features and functions of the system , combined with the development of the monitoring system , the network structure of the system , the hardware configuration and the key technology to determine bit machine with field devices fieldbus communications, PC and the next crew via Industrial Ethernet data communication . Then the system design , monitoring and management system is divided into two parts , the first part of the PLC control system , the second part is the control and management system . PLC control system applications Siemens S7-300 series PLC control field devices , the use of the STEP 7 programming software programming , according to the works of the crane , crane liter , carts , trolleys and other institutions to complete PLC control program , with PLCSIM simulation simulation. Control management system to use a the Siemens WinCC configuration software design PC monitor screen , Ethernet TCP / IP communication protocol as an external channel while monitoring the three cranes in a platform-bit machine , plus direct and structural variables variable analysis to determine the monitor screen to take a combination of structural variables and picture window design, and agencies monitoring interface , trend interface , alarm interface , user management interface in detail . Finally , according to the demand of the system report analysis , combined with the current the report features configuration software , system operating statements and equipment maintenance reports, VB script and SQL Server 2005 database combined approach to design .
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