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Analog 0-10V to Ethernet convertor
Hlúpik, Martin ; Štohl, Radek (referee) ; Bradáč, Zdeněk (advisor)
This Master`s thesis concern with problematic of connection analog sensors with voltage output 0-10V to a ethernet communication network. Due to a quick evolution and an application ethernet nets to industry and building technologies is possible to use this solution for connection remote diagnostics and setting of existing analog sensors without bus communication interfaces on instrumentation level of field bus networks. The converter is based on Rabbit module, which can be used like webserver for setting, calibration and data recording. For purpose of wide converter use the data output will be purvey on ethernet interface by Modbus TCP and on asynchronous serial interface RS232. First part of thesis is aimed on description of existing solutions and introduction with principles of linearization and calibration of A/D converters. Description of communication standard Modbus TCP widely used in industry applications. Second part of thesis describes design a realization of project. Here is described equipment block diagram with detail description of each block and devices used. In the part of implementation is description of device firmware with program function description and control. Last part is engage with module function verification supported with plantz of measurements and tests. The thesis is ended with evaluation results, knowledge and detections found out in development of project.
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AS-I repeater included optical interface
Hlúpik, Martin ; Fiedler, Petr (referee) ; Štohl, Radek (advisor)
The aim of project is to develop and realize AS-I bus repeater with interface to optical wire. Communication over optical wires can prolong distances between AS-I units to hundred of meters. This solution is advantage in industry where each of AS-I units are placed far away of each other and electromagnetic field disturbance can affect communication over network. AS-I is lowest control level in industrial communication technology. Here, binary actuators and sensors in the field and process area are networked. Many of the devices connected, supply or require binary signals. The necessary data volume is small, but the speed of data transmission is very high. The first part of project is to design schematic and printed circuit board in developing system EAGLE 4.11. Verify function on testing board and make measurements with optical wire. A criterion for communication is data speed communication which has to be lower than 5ms in complete occupied 31 slaves’ bus. The second part of project is to made function sample of AS-I Repeatr and build it to package that is suitable for assembly to DIN ledge and into industrial electric switching cabinet.
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AS-I repeater included optical interface
Hlúpik, Martin ; Fiedler, Petr (referee) ; Štohl, Radek (advisor)
The aim of project is to develop and realize AS-I bus repeater with interface to optical wire. Communication over optical wires can prolong distances between AS-I units to hundred of meters. This solution is advantage in industry where each of AS-I units are placed far away of each other and electromagnetic field disturbance can affect communication over network. AS-I is lowest control level in industrial communication technology. Here, binary actuators and sensors in the field and process area are networked. Many of the devices connected, supply or require binary signals. The necessary data volume is small, but the speed of data transmission is very high. The first part of project is to design schematic and printed circuit board in developing system EAGLE 4.11. Verify function on testing board and make measurements with optical wire. A criterion for communication is data speed communication which has to be lower than 5ms in complete occupied 31 slaves’ bus. The second part of project is to made function sample of AS-I Repeatr and build it to package that is suitable for assembly to DIN ledge and into industrial electric switching cabinet.
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Analog 0-10V to Ethernet convertor
Hlúpik, Martin ; Štohl, Radek (referee) ; Bradáč, Zdeněk (advisor)
This Master`s thesis concern with problematic of connection analog sensors with voltage output 0-10V to a ethernet communication network. Due to a quick evolution and an application ethernet nets to industry and building technologies is possible to use this solution for connection remote diagnostics and setting of existing analog sensors without bus communication interfaces on instrumentation level of field bus networks. The converter is based on Rabbit module, which can be used like webserver for setting, calibration and data recording. For purpose of wide converter use the data output will be purvey on ethernet interface by Modbus TCP and on asynchronous serial interface RS232. First part of thesis is aimed on description of existing solutions and introduction with principles of linearization and calibration of A/D converters. Description of communication standard Modbus TCP widely used in industry applications. Second part of thesis describes design a realization of project. Here is described equipment block diagram with detail description of each block and devices used. In the part of implementation is description of device firmware with program function description and control. Last part is engage with module function verification supported with plantz of measurements and tests. The thesis is ended with evaluation results, knowledge and detections found out in development of project.
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