Climate Monitoring WEB Interface Using 1_Wire

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Climate Monitoring WEB Interface Using 1_Wire
Sensors

• Imad Hoteit
• Hassan Wehbe

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Outline

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

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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.

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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.

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Functional Description
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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.

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Functional Description
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Modes of Operation

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

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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

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

• Whats behind the applet?
• JDBC status unsuccessful
• Perl/CGI Script Status successful
• The applet
• Main
• Temperature
• Humidity

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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

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Tentative

• We were thinking of making use of a program
  similar to these 1 2
• 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.

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Sensor Query Daemon Flowchart
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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

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HA5

• Open connection
• Close connection ? Destructor
• Search all, by family, by condition
• Select one sensor
• Read
• Light switch
• Temperature value
• Humidity ratio

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Sensors_DB

• Open connection
• Close connection ? Destructor
• Search
• All tables
• By sensorid, by type
• Insert/Update a row
• //Delete a rowused for troubleshooting

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Division of work

• Hassan
• Java Applet
• Perl/ CGI script
• Imad
• C
• Hardware Interface

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Schedule of Future Tasks
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Schedule of Future Tasks
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Climate Monitoring WEB Interface

• Questions