Tuesday, July 13, 2010

Testing the senspods

For testing purpose we used three senspods: 3002, 4006, 4007. We measured CO2 level on the territory of NIES (Tsukuba) from 16:30 to 16:55 carrying the senspods together.

Here are the results:















Unfortunately only the 4007 showed correct coordinates. Here are the maps:






Tuesday, June 22, 2010

Start working with Android phone

Last Friday we started developing our first application in Android OS v. 1.6 on the Docomo HT-03A phone and we could achieve some very useful results:
  1. We can pair and connect a senspod to the phone. Because the Android v.1.6 does not support Bluetooth (although the Bluethooth device is installed on the phone) we had to develop our own program that connect the senspod and the phone through Bluetooth.
  2. When start the application (CitySenspod) and click Menu button two options will pop-up: Connect a device, Disconnect a device. When click Connect a device a small window with detected devices will appear. After choosing one of the devices the messages will start coming.
  3. Displayed messages contain the following information: date.time, reliability, latitude, and longitude.
  4. To disconnect device go to Menu>Disconnect a device.
More information on the Android application development project read here.

Thursday, June 3, 2010

Available Sensors

a. MiCS-5135 / ev2v:
carbon monoxide (CO)
hydrocarbons (HC)
ethanol
volatile organic compounds (VOC)

b. MICS-4514 / ev2v:
carbon monoxide (CO)
hydrocarbons (HC)
oxidising gases such as NO2

c. MICS-2614 / ev2v:
Ozone

d. MICS-5524 / ev2v:
COx
HC
VOCs

e. H-550 (NDIR sensing method) / ELT:
CO2

d. Sensirion
temperature
humidity


Reports on the characteristics and accuracy of the sensors:
  1. Improvement of Measurement Accuracy in Environmental Monitoring System Based-on Semiconductor Gas Sensors
  2. Use of a Dynamic Enclosure Approach to Test the Accuracy of the NDIR Sensor: Evaluation Based on the CO2 Equilibration Pattern
  3. MICS-4514
  4. MICS-2614
  5. MICS-5524

SensNet Software platform

SensNet, provided by Sensaris, allows you to remotely control and send commands to wireless sensors via a web page.

Enables bi directional communication:
  • Send commands to the sensors
  • Collect and retrieve sensor data in a database
Require:
  1. Internet access
  2. Bluetooth
  3. User privileges
For more details please check the Youtube video or visit the Sensaris website.