1. 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)

2. How does your plant feel today? The problem: people love plants growing in their home and office, but sometimes they forget to water them…

3. 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

4. Product description Current humidity measurement Desired humidity level INPUTOUTPUT O.K. or: Problem!

5. Product description Soil humidity sensor plant classifier red/green leds On/off switch Battery test button

6. Product description

7. Video Demo

8. Technology assessment Finding the appropriate humidity sensor Power consumption Water resistance

9. 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

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

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

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

13. 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?

14. Cost Sensor : up to 5 $ Box : several cents Batteries : ~ 2$ Chip : 1$ Electric circuit : 1$ Total : up to 10 $

15. More indicators for water stress Indicator: Leaf temperature Leaf humidification Solute concentration ABA hormone Chlorophyll concentraion Measured by: Thermometer Porometer Specific antibodies Photometer

16. Thank You