For each use, each project, a solution can be applied. Because what is important is to get and manipulate final data.

How to transmit data from sensors to smart interfaces?

TThe standard version of Senspods, Zaopods and Pods4Fun embeds a Bluetooth module. Why use Bluetooth?

  • This technology exists in your smartphone, your computer, your tablet. The sensor is directly compatible with the majority of those devices
  • Bluetooth has no interferences with other radio technologies like WiFi or GPRS
  • It is very simple to use such technology and it’s free
  • New generation of Bluetooth is low energy and low latency

In this standard version, data is sent via Bluetooth to a mobile phone or a tablet. The mobile device can read data and send it using its own radio modules (WiFi or 2G/3G/4G). This decreases costs of the sensor network by avoiding the purchase of an additional gateway. It also allows the use of a program (an application) to directly understand the data gathered.

For applications requiring to continuously send data in real time, a gateway can be used. This gateway collects data from sensors before sending them via Ethernet connectivity, WiFi (if a network is available) or 2G/3G (data SIM card required).

How is data managed in the system?

There are two ways of managing data. It can be either be stored locally or sent to a remote server or to the Cloud.

Data can be stored directly on a memory card embedded in the sensor (standard 2Go SD Card), on the phone as a CSV file or after having been acquired it can be streamed from the memory card/phone to a server (store and forward configuration).

Data can be sent via different solutions (see previous chapter). If using a phone, the application can also transfer data via RSS. They can be sent to a distant server, either ours to use the web interface (Sensdots) or to your own server. From Sensdots, historical data sent can also be downloaded in a CSV format.

How can I visualize data?

The phone application can be used to display real time data. It also gives an interpretation with respect to “typical values (e.g; radiation, particles, NOx, Ozone etc…).

From Sensdots (the web interface) data can be geolocated on a Google map and read in real time. A historical graph allows to compare data and they can be downloaded from there.