We added YOLINK water leak sensors (YS7903-UC) around the lab. There are four in total, and they are set up in different locations. They operate via Bluetooth and communicate with a hub in the control room over the desks. The hub's location is shown in water_leak_sen_hub_location.png. The hub is connected to a port that is not attached to the lab's subnet on a specially reserved Ethernet port (033-01-03 port 1). Each sensor is placed on the ground in a (hopefully) out-of-the-way location.
I made a map (water_leak_sensor_map.pdf) of the water leak sensors' positions. The first sensor is placed where the water came in last time along the south wall of the GQuEST lab (B111B). The second one is under the optics table by the laser. Since this is the low point of the room, which I know from the flood, water from any entry point should eventually reach that point. It is also near the laser's power source, which should not get wet. The third is under the windows of the EE shop (B111D). If water comes in those windows, we want to know. The fourth is in the pump room (B111C) on the south wall. This is the most likely to flood since it is the room with all the water attachments. There is a drain in the pump room, but if water reaches the sensor, which is at a high part of the room, it will leak through the wall to the main lab. I labeled all of the sensors with "Moisture Sensor " and their number. (I include this mainly so that it comes up when someone searches the log for exactly what is on the sensors)
| Number | Serial Number | Location | Image |
|---|---|---|---|
| 1 | 1BA4B3FC15 | B111B: south wall by curtain and cabinet | sensor 1 location |
| 2 | 10D6047333 | B111B: under the optical table by laser | sensor 2 location |
| 3 | BF6C9630BE | B111D: mid west wall under solder station | sensor 3 location |
| 4 | 3F0C4FB2B6 | B111C: south wall right of Sumitomo F-20 | sensor 4 location |
The RbQ lab (B111A) does not have sensors. It hasn't shown any signs of flooding, but we should get an extra one for it. I chose the locations for the sensors so I could move one to the RbQ lab if we decide we want one there without buying an extra one.
There are plans to create an alert system that notify the whole lab via email and a few people over text. They want to set up a special email list for it. I have floated the idea of adding a piece of code that will trigger a Mattermost alert in the alarms channel.
