How does your plant feel today?

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Happy Plant
Course PostPC Computing
Embedding InteligenceTeachers
Prof. Scott Kirkpatrick
Mr. Amnon DekelPresented by
Ronny Aloni (Computer Science Biology)
Vitaly Lubart (Computer Science)
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How does your plant feel today?

• The problem people love plants growing in their
  home and office, but sometimes they forget to
  water them

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Dont let your plant get down!

• Our goal
• build a device which senses the humidity level
  inside the pot, and alerts when it is not
  sufficient

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Product description
INPUT
OUTPUT
Desired humidity level
O.K. or Problem!
Current humidity measurement
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Product description
plant classifier
red/green leds
On/off switch
Soil humidity sensor
Battery test button
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Product description
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Product description
Video Demo
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Technology assessment

• Finding the appropriate humidity sensor
• Power consumption
• Water resistance

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Measurement techniques

• Gravimetric techniques
• Nuclear techniques
• Neutron Scattering
• Gamma Attenuation
• Resistive Sensor (Gypsum)
• Capacitive Sensor
• Time-Domain Reflectometer (TDR)
• Tensiometric techniques
• Hygrometric techniques
• Remote sensing techniques
• Optical Methods

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Capacitive Sensors
The slide is taken from http//www.sowacs.com/feat
ure/netafim/SOILMOIS.PDF
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Netafim Sensor
The slide is taken from http//www.sowacs.com/feat
ure/netafim/SOILMOIS.PDF
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Netafim Sensor
The slide is taken from http//www.sowacs.com/feat
ure/netafim/SOILMOIS.PDF
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When should the red light turn on?
Cacti and succulents- let soil dry out almost
completely
Flowering plants-Keep moist at all times. Dont
let the soil dry out.
Foliage plants- keep uniformly moist but not
wet. The soil may dry out a bit.
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Cost

• Sensor up to 5
• Box several cents
• Batteries 2
• Chip 1
• Electric circuit 1
• Total up to 10

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More indicators for water stress

• Indicator
• Leaf temperature
• Leaf humidification
• Solute concentration
• ABA hormone
• Chlorophyll concentraion

• Measured by
• Thermometer
• Porometer
• Specific antibodies
• Photometer

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Thank You