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Start work on chap. 3: software

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Lennart Heimbs 2019-06-05 13:23:59 +00:00
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doc/smart_home_technical_paper
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@ -33,5 +33,14 @@ Keywords: Smart Home, Presence detection, Node-red, mqtt, gateway, raspberry pi
To circumvent this limitation, the raspberry pi is used as a wireless access point running a standalone network.
the sensors will connect to this standalone network, in which the gateway is the host with a static ip-address, and send their gathered data via the network to the gateway for further processing.
To communicate with commercial sensors the radio-tranciever HM-MOD-RPI-PCB from ELV is used.
It provides an easy to use 868,3/869,525 MHz radio tranciever which connects to the raspberry pis GPIO-Pins
3. THE SETUPS SOFTWARE
[IMAGE]
The smart home environment is comprised of three key layers:
the logic-layer with node-red and node-red-dashboard implements the logic for the presencedetection and the graphical user interface.
node-red is used because it provides an easy-to-use flow-based programming interface.
data is represented by nodes
mqtt is the protocol used in the networking-layer to relay data coming in from sensors to the logic-layer.
the interface-layer is used to connect