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leak detection and shut off

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ed12309

New Member
we have a design that needs some help,

we have an idea where if your pipes leak in your house a valve on your main will shut off.

if we use a turbine that can determine the amount of water being pumped through a pipe, we can compare all of our inputs to our outputs and see if the match up, if they dont then the main will shut off.

each exit we would like to have emit a frequency back to a main comparator,

we need help with the easiest way of detection of water flow, converting that to frequency and back.

any ideas?
thanks
 

user_88

Member
What nominal flow rate are you working with?

What percent of the flow rate would you consider to be a significant leak?
 

MikeMl

Well-Known Member
Most Helpful Member
As I told you in the other thread, look for periods of zero flow. If you dont see a period with zero flow in 12-24 hours, you have a leak.
 

Rajaneesh

Member
we have a design that needs some help,

we have an idea where if your pipes leak in your house a valve on your main will shut off.

if we use a turbine that can determine the amount of water being pumped through a pipe, we can compare all of our inputs to our outputs and see if the match up, if they dont then the main will shut off.

each exit we would like to have emit a frequency back to a main comparator,

we need help with the easiest way of detection of water flow, converting that to frequency and back.

any ideas?
thanks


You dont need to measure the water flow and make things complicated.....
You wanted to shut off the main gate valve of the over head tank, if there is any leakage in the pipe lines..at the same time it should not shut off if the authorized outlet valves are open.... Am I right?

You need to install a proxy based or motion based sensor in every authorised outlets(taps or valves), which can be configured to RF if you want to avoid the wirings... each sensor will have its unique id which will be transmitted along with the trigger data.

You will have a master controller which you can keep anywhere in the house or building (should be in the RF range). This master will keep monitoring all the sensor output for any trigger, if all the sensors are giving green signal....(all taps are closed) this will monitor the flow sensor output which is installed in the overhead tank outlet... if this sensor is giving any output(water flow), this means there is a leakage... Immediately the master controller will give a command to shut off the main gate valve (electrically operated with RF control)..

Hope this will help in developing a foolproof system...
 

ed12309

New Member
You dont need to measure the water flow and make things complicated.....
You wanted to shut off the main gate valve of the over head tank, if there is any leakage in the pipe lines..at the same time it should not shut off if the authorized outlet valves are open.... Am I right?

You need to install a proxy based or motion based sensor in every authorised outlets(taps or valves), which can be configured to RF if you want to avoid the wirings... each sensor will have its unique id which will be transmitted along with the trigger data.

You will have a master controller which you can keep anywhere in the house or building (should be in the RF range). This master will keep monitoring all the sensor output for any trigger, if all the sensors are giving green signal....(all taps are closed) this will monitor the flow sensor output which is installed in the overhead tank outlet... if this sensor is giving any output(water flow), this means there is a leakage... Immediately the master controller will give a command to shut off the main gate valve (electrically operated with RF control)..

Hope this will help in developing a foolproof system...


so what ur saying is not compare the output but actually just see if water is flowin, when the valves are shut, what would you do in the event that it bursts while running, you would still have the valve open and leaking at the same time? right?
 
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Rajaneesh

Member
so what ur saying is not compare the output but actually just see if water is flowin, when the valves are shut, what would you do in the event that it bursts while running, you would still have the valve open and leaking at the same time? right?


I didn't get your point.... please explain step by step event..... also make clear what you mean with bursts while running...? which is not clear to me....
 

ed12309

New Member
I didn't get your point.... please explain step by step event..... also make clear what you mean with bursts while running...? which is not clear to me....

Like your sayin to actually just see if water is flowing through the pipes when the spout is on?? now what is a pipe is cracked(leaking) but water can still flow, water will be able to still come out the spout when turned on? which would mean its reading that its fine, although its actually leaking? understand what im trying to say?
 

Rajaneesh

Member
Like your sayin to actually just see if water is flowing through the pipes when the spout is on?? now what is a pipe is cracked(leaking) but water can still flow, water will be able to still come out the spout when turned on? which would mean its reading that its fine, although its actually leaking? understand what im trying to say?


You dint grasp my points correctly it seems... here you go.....

1. Scan continuously all the authorised valve(taps) sensors
2. If all the sensor data is giving an information that taps are in closed condition...
3. Scan the water flow sensor fitter in the outlet of overhead tank
4. If it gives, a flow data, give command to the master gate valve to close...
5. If it does not give any flow data, ie,..there is no leakage... then go back to the 1 loop again and keep doing the same routine...

Hope you got this principle now.....

Also try to improve your English while explaining such technical things so that other person will be clear with your thoughts.
 

Gary B

New Member
It sounds like you do not need to know where the leak is located so how about this for a simple solution: If the output of your turbines are DC connect them in series in a single loop about the house. The master is + and connected to the – of the valves. As long as the voltage is zero at that test point, there is no leak. No scan needed since it is basically an analog real-time system. You then connect a voltage detector at the test point and when it exceeds your calibration accuracy, it triggers the valve solenoid.
 
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Rajaneesh

Member
It sounds like you do not need to know where the leak is located so how about this for a simple solution: If the output of your turbines are DC connect them in series in a single loop about the house. The master is + and connected to the – of the valves. As long as the voltage is zero at that test point, there is no leak. No scan needed since it is basically an analog real-time system. You then connect a voltage detector at the test point and when it exceeds your calibration accuracy, it triggers the valve solenoid.


Hi Gary....

Here the wiring is tedious and practically not feasible to route the lines...for every sensors in the building. Previous discussion are based on RF, it can be either zigbee or z-wave...
 
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