Application for the Web-IO Digital:
Control
Remote control of a model crane directly from the browser
Definition of tasks
The application outlined here is a project work of one of our trainees. The main focus dealt with a feasibility study in which it was to be determined which bandwidth a DSL connection must have in order to transmit the pictures of a Web camera.
The observation object to be shown was a model-construction crane operable via the browser. Our application example deals exclusively with the control of the crane.
The solution
The crane has control electronics which actuate the swivel-up and swivel-down operations, the cable pull and the rotation of the crane. The outputs of a Web-IO were connected with the control electronic hardware of the crane.
For the functions of the Web-IO, a webpage was programmed which renders the crane operable via buttons and displays the live picture of the web-cam.
The whole thing was placed on the Internet via a DSL connection.
The details
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1. The digital outputs of a Web-IO were connected with the control electronic hardware of the crane.
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2. The Web-IO was plugged into a free Ethernet port and connected to a power supply.
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3. The Web-IO was assigned an IP address.
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5. The webpage was made accessible on the Internet via DSL.
What was realized here on a small scale naturally also works on a large scale.
Further practical examples:
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Sending alarms and monitoring
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Steuern
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Bridging distances
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Recording
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Display