E
[email protected]
- Jan 1, 1970
- 0
This is in respond to a 2 months old thread "plumbing". I can't find my post and it's difficult to find the thread; so, time for a new posting.
OP wants flow sensors and valves at the fixture level, but we are only doing it at the house level. However, most of the requirements are the same, only pipe size of 1/2" vs. 1". Our setups:
1. Flow sensor with resolution of 1L per pulse.
2. Bi-stable shut-off valve within 10 seconds (500mA at 15V).
3. Flow Alternator (300mA at 3.3V)
4. PIC32/RF transceivers (802.15.4).
5. Standalone/PC USB interfaces.
http://173.224.223.62/water.jpg
The flow sensor is a very unusual design, but very sensitive. It has a rotating offset disk inside. I can't figure out how it control the rotation direction, but obviously it works.
Flow alternator is missing, but the 3V to 15V booster is there for the valve control.
OP wants flow sensors and valves at the fixture level, but we are only doing it at the house level. However, most of the requirements are the same, only pipe size of 1/2" vs. 1". Our setups:
1. Flow sensor with resolution of 1L per pulse.
2. Bi-stable shut-off valve within 10 seconds (500mA at 15V).
3. Flow Alternator (300mA at 3.3V)
4. PIC32/RF transceivers (802.15.4).
5. Standalone/PC USB interfaces.
http://173.224.223.62/water.jpg
The flow sensor is a very unusual design, but very sensitive. It has a rotating offset disk inside. I can't figure out how it control the rotation direction, but obviously it works.
Flow alternator is missing, but the 3V to 15V booster is there for the valve control.