Hello people !
I almost forgot about this topic !
I finally developped myself a custom powerstrip (on a single powerstrip, I can have multiple plugs). This powerstrip is controlled via Bluetooth and a small electronic card (similar to an arduinoBT). You can see a picture of the actual prototype in attachment.
I also developped a simple Windows Mobile application to control the powerstrip. The software automatically detects the surrounding devices and updates them. Turning on/off a plug is almost instantaneous, however, detecting a new powerstrip takes about 10 seconds.
This technology would cost too much to be inserted into each lightswitch of a house, but it could be inserted in switchboard with multiple light switchs. In this manner, one bluetooth receiver controls multiple devices and hence the cost is reduced.
You also need to be aware that only 7 bluetooth connection can coexist at the same time ... thus if you have more devices, you potentially have to reconnect to a device (5-10 seconds).
So for small installation, it is really good.
Advantages of the BT powerstrip
- Simple powerstrip system, plug and play
- No environemental impact (no new cables, no holes in the walls, no installation)
- Implicit localization
- Bluetooth available on most smartphones
Disadvantages
- Battery consumption on the smartphone side
- Limited to 7 devices simultaneously (but can control more with delays)
- Detection and first connection delays (7-10 seconds)
One single powerstrip prototype cost about 40 Euros to produce; however this cost could be reduced with an industrial production.
I have not extensively searched for company willing to develop my product .... as it was mere a proof of concept and an add-on to the wheelchair control mechanism.
Hope that helps and clarify a bit the subject !