Climate%20Monitoring%20WEB%20Interface%20Using%201_Wire

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Climate Monitoring WEB Interface Using 1_Wire
Sensors

• Imad Hoteit
• Hassan Wehbe

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Outline

• Project Summary
• Standards
• Functional Description
• Inputs and Outputs
• Modes of Operation

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Outline

• Block Diagrams
• Flowcharts
• Parts List
• Datasheet Specifications
• Testing
• Schedule of tasks

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Project Summary

• Monitoring temperature and humidity in computer
  laboratories will assist in maintaining
  facilities and hardware.
• Light sensors can be used to keep track of
  laboratory usage and even reduce the electricity
  bill.

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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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Standards

• MySQL protocol over TCP/IP(DSTP)
• Operating System Windows or Linux Platform
• Dallas Semiconductor 1-Wire? devices
• Point Six, Inc HA5 adapter to ASCII protocol
• IEEEs 9 pin Serial Connection, RS-232

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Standards
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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. These
  have not been decided yet.

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Functional Description
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Inputs and Outputs

• Inputs
• Light, temperature and humidity i.e. sensor
  readings
• Input from the user
• Request history of a sensor
• Update the readings

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Inputs and Outputs

• Outputs
• Output displayed to the user from the interface
• Current status of all sensors
• History for selected sensor
• Data sent and saved in the database

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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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Applet Flowchart
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Sensor Query Daemon Flowchart
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Parts List

• Point Six, Inc manufactures all these devices
• D2Photo Light Sensor
• DS1820 Digital Thermometer
• HMP-2001S 0-100 Digital Relative Temperature
  and Humidity Sensor
• HA5 RS232 to Isolated 1-Wire? Host Adapter
• T8A 8 Channel 12 bit Analog 1-Wire? CARD
• T8D 8 Channel Digital I/O 1-Wire? CARD

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Datasheet Specifications

• HA5 Adapter
• Drive capability 200 sensors
• Maximum cable length 2000 ft
• Power Supply
• Power received 110V/60Hz
• Power provided 5V/2A

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Datasheet Specifications

• DS1820 (Digital Thermometer)
• Temperature is read as a 9-bit digital value
• Range -55C to 125 C with 0.5 C -67 F
  to 257 F with 0.9 F
• Converts temperature to digital word in 200ms

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Datasheet Specifications

• D2Photo (Light Monitor)
• Returns ON or OFF
• Photosensitivity Spectral Range
• Min 730 nm
• Max 1100 nm

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Datasheets Specifications

• HMP-2001S (Humidity Temperature sensor)
• Collects
• RH (12 bit) (0-100 range)
• Temperature data (13 bit - 0.038 F)
• All sensors have a unique 64-bit electronic
  serial number

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Testing

• The HA5 was accessed using the HyperTerminal
  program.
• Baud rate 115200 bits/s
• Data bits 8
• Parity None
• Stop bit 1
• Flow control None

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Timing
Hassan Hassan Super Imad Super Imad
Research Testing Research Testing
Week1 7 0 7 0
Week2 5 1 3 3
Week3 2 4 2 3
Week4 4 2 3 2
Week5 2 4 5 2
Week6 2 3 4 3
Total 22 14 24 13
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Schedule of Future Tasks

• Winter Break
• Investigate and (hopefully) test Database usage
• Research JDBC
• January, February
• Complete main objective of project

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Schedule of Future Tasks

• March, April, May
• Tentative Implementation of additional features
• Plots based on historical data
• Generation and usage of a general configuration
  file
• Capstone Presentation
• Winning the award ?

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Climate Monitoring WEB Interface

• Questions