I am trying to track Activities of Daily Living (ADLs) in a bathroom. Instead of using an obtrusive microphone for sound recognition, I would like to explore non-invasive hardware to detect when a toilet is flushed and when a bathroom sink is used.
I do not want to spend nor do I require the granularity that is provided by expensive water management solutions (e.g. https://www.fortrezz.com/flow-meter). Ideally, I could tape a Z-WAVE or ZigBee sensor to the water lines that feed the sink and toilet to detect no flow, flow and high flow via vibration / accelerometer sensors + software at the local gateway.
Does anyone know of implemented solutions that leverages this idea instead of purchasing $200 proprietary water sensors?
Thank you in advance!