Low-cost Field Server

NARO National Agriculture and Food Research Organization

Masayuki HIRAFUJIHaoming Hu

Field Server Sensor Network

Web ServerWi-Fi or Cellar-phoneSensorsCameraLED LightingSolar-cell

Towards 100USD Field Server

Panasonic: $5,000-10,000 elab experience: $2,000 – 4,000

Advanced Field Server

A Prototype of Advanced Field Server

• 24ch sensors

• Solar cells

• LED Projector

• Single-lens reflex digital camera

• Servo

• Mesh-network router board

• Face-recognition board

• Internet radio board

• FON router

An Advanced Field Server with 9 Cameras

Surveillance against Unlawful Dumping

With a Infra-red Camera and a High Resolution Camera (Single-Lens Reflex Digital Camera)

A Image of a High Resolution Camera (EOS Kiss digital N)

Parts of The Image

Low-cost Field Server

Fundamental Architecture

• Stable, Rugged and Durable• Connected by Ethernet & Wi-Fi

Easy to control on Windows and Linux• Constituted by Web Devices

Each devices in a Field Server functions as a Web server.

• Minimum hardware and softwareThe Agent system and applications on a remote PC provide rich services.

Essential Elements of Field Server

• Case• Field Server Engine • Wi-Fi Router• Network Camera• Sensors• LED Lighting

Air filter

Fan

Wi-Fi card Web server card

Temperature sensor

Humidity. sensors Air inlet

Thermal insulator

Air outlet

Solar cell

Network camera

1. H8/3069 CPU2. 1M bit SRAM3. 24bit resolution A/D converter (16ch) 4. Direct Digital Synthesizer5. Power photo MOS relay(2ch)6. DC-DC converter

(in 4-34V, out 5V)7. Real-time clock8. Battery backup

Field Server Engine

$300 $30 1. H8/3069 CPU2. 1M bit SRAM3. 4. 5. 6. DC-DC converter

(in 4-34V, out 5V)7. 8.

1. Mesh-network2. WDS (Wireless Distribution System)3. Wi-Fi/Ethernet Media Converter

(Access Point, Client)

Types of Wi-Fi Network

ASUS’s Wireless LAN Router (WDS)

WL-530g ($67)http://meraki.com/

International Use

Radio Regulatory

• FCC in US

• TELEC in JP

• CE in EUDistributers

D-Link’s Wireless Access Point (WDS)

DWL-2100AP ($75-$113)http://www.dlink.com/

Thinktube’s Wi-Fi Mesh-network Router

Rokko Mesh Router ($800)http://www.thinktube.com/en/

Meraki Network’s Wi-Fi Mesh Network Router

Meraki mini ($49)http://meraki.com/

ETSI

Total

• Field Server Engine: • Case: • Wi-Fi device + Switching hub• Sensors • Camera • Fan, Power LED • Solar Cells • Assemble

$209 - 12400

$30 - 300

$30 - 1000

$49 - 1000

$ 0 - 2000

$90 - 4000

$10 - 100

$ 0 - 2000

$ 0 - 1000

Estimation of Costs

Made-in-China: $1000 - 2000

$1000 Field ServerSmall CaseWeb ServerWi-FiSensors Temp. (Inside, Outside), Humidity, Solar-radiation, 4 ext.CameraLED Lighting