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.
• The objective of these sensors is mainly
  maintenance.

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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

• Applet
• The applet is running on a web server .
• The applet displays a blueprint of Jobst
  hall,with the location of the sensors in each
  room.
• The applet shows the current readings of the
  sensors

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Functional Description

• Once you press on the sensor a historical value
  chart appears,showing the previously recorded
  values

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Functional Description
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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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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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Functional Description
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Database updates

• The MySQL database has five tables
• Temperature
• timestamp, sensorid, temp_R, temp_V
• Light
• timestamp, sensorid, lite
• Humidity
• timestamp, sensorid, temp_R, temp_V, hmd_R, hmd_V
• Data
• sensorid, type, timestamp, value
• Map
• map, sensorid, X, Y

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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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Climate Monitoring WEB Interface

• Questions
• Climwisr