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Climate Monitoring WEB Interface Using 1_Wire™ Sensors

Climate Monitoring WEB Interface Using 1_Wire™ Sensors. Imad Hoteit Hassan Wehbe. Outline. Project Summary Functional Description Modes of Operation Database updates Flowcharts Testing Schedule of tasks. Project Summary.

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Climate Monitoring WEB Interface Using 1_Wire™ Sensors

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  1. Climate Monitoring WEB Interface Using 1_Wire™ Sensors Imad Hoteit Hassan Wehbe

  2. Outline • Project Summary • Functional Description • Modes of Operation • Database updates • Flowcharts • Testing • Schedule of tasks

  3. Project Summary • The purpose of this project is to set up these sensors, create a user-friendly web based interface (applet) and a database that will hold previous data and provide query abilities to the applet.

  4. Functional Description • Hardware Interface • The sensors will be distributed along two wires that go through different rooms of Jobst hall; these are connected to the HA5 adapter.

  5. Functional Description

  6. Functional Description • Applet • The applet will run on a web server and will query the sensors for readings. • Data will be recorded in a database for later use. • Many applications could be added to the applet making use of the records in the database.

  7. Functional Description

  8. Modes of Operation • Applet • Display historical data • Get immediate sensor update • Sensor Query Daemon • Discover sensors on network • Request sensor readings • Update database

  9. Database updates • The MySQL database has four tables (so far): • Temprerature • timestamp, sensorid, temp_R, temp_V • Light • timestamp, sensorid, on • Humidity • timestamp, sensorid, temp_R, temp_V, hmd_R, hmd_V • Data • sensorid, type, timestamp

  10. Applet Flowchart Start Initialize and Display Temperature Humidity Lights Room Sensor Is Located in, Value Read, Time of Reading Room where sensor is shown Graph Displayed

  11. CGI Script Flowchart

  12. The GUI • What’s behind the applet? • JDBC: status unsuccessful • Perl/CGI Script: Status successful • The applet: • Main • Temperature • Humidity

  13. The GUI • The applet (continued): • Lights • Chart for the values read by each sensor • Navigation controls • Hopefully a software to let the administrator draw the room

  14. Tentative • We were thinking of making use of a program similar to these 12 • It would need some tweaking, yet would allow the administrator to create a custom made rooms and specify the position of the sensors within those rooms.

  15. Sensor Query Daemon Flowchart

  16. Sensor Query Daemon • The server application uses two classes • HA5 • Sensor_DB • The reasons for object oriented programming are • Anticipated growth • Ease of debugging • Clarity of code

  17. HA5 • Open connection • Close connection  Destructor • Search: all, by family, by condition • Select one sensor • Read: • Light switch • Temperature value • Humidity ratio

  18. Sensors_DB • Open connection • Close connection  Destructor • Search: • All tables • By sensorid, by type • Insert/Update a row • //Delete a row…used for troubleshooting

  19. Division of work • Hassan: • Java Applet • Perl/ CGI script • Imad: • C++ • Hardware Interface

  20. Schedule of Future Tasks

  21. Schedule of Future Tasks

  22. Climate Monitoring WEB Interface Questions

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