Happy Plant

Course: PostPC Computing: Embedding Inteligence

Teachers: Prof. Scott Kirkpatrick Mr. Amnon Dekel

Presented by: Ronny Aloni (Computer Science & Biology) Vitaly Lubart (Computer Science)

How does your plant feel today?

The problem: people love plants growing in their home and office, but sometimes

they forget to water them …

Don’t 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

Product description

Current humidity measurement

Desired humidity level

INPUT OUTPUT

O.K. or:Problem!

Product description

Soil humidity sensor

plant classifier red/green leds

On/off switch

Battery test button

Product description

Product description

Video Demo

Technology assessment

• Finding the appropriate humidity sensor

• Power consumption

• Water resistance

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

Capacitive Sensors

The slide is taken from http://www.sowacs.com/feature/netafim/SOILMOIS.PDF

Netafim Sensor

The slide is taken from http://www.sowacs.com/feature/netafim/SOILMOIS.PDF

Netafim Sensor

The slide is taken from http://www.sowacs.com/feature/netafim/SOILMOIS.PDF

Cacti and succulents- let soil dry out almost

completely

Flowering plants-Keep

moist at all times. Don’t let the soil

dry out.

Foliage plants- keep uniformly

moist but not wet. The soil may dry

out a bit.

When should the red light turn on?

Cost • Sensor : up to 5 $• Box : several cents• Batteries : ~ 2$• Chip : 1$• Electric circuit : 1$

• Total : up to 10 $

More indicators for water stress Indicator:

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

concentraion

Measured by:• Thermometer• Porometer

• Specific antibodies • Photometer

Thank You