Water Pipe Circuit Detection
The Circuit is designed for use in Household Water Tanks, as shown in the schematic diagram.
An LED Circuit, similar to this one, can be used. The above Circuit was made by me.
Hand – drawn diagram of the Circuit, along with a schematic diagram of it in the Water Tank.
How the Circuit Works :
· A series of probes are placed below the water level.
· Given that the probe on level B, C, D or E are below water, an electrical current will flow to the corresponding LED, showing that the water level is above the level of the probe in question.
· If the water level falls below the level of the probe, no current flows, hence the corresponding LED does not light.
· If multiple LEDs are ‘OFF’, it means that the water level is low. This can vary from season to season and does not necessarily mean that there is a leak.
· However, probes F and G play a special role if there is truly a leak in the Water Tank.
· If you notice in the diagram I have drawn, the resistors are all of the same resistance, except one resistor – the one connected to the bell.
· Current always flows along the path of least resistance, hence there will be a limited current in the bell circuit while the probes are under water.
· Only when the water level reaches below the level F – clearly due to a leak in the Water Tank – the current is forced to move along the buzzer Circuit, causing the buzzer to ring and alerting individuals to the leakage problem.
The advantage of this system is that it takes into account the seasonal differences that there may be in water levels, hence it will not unnecessarily cause human intervention to be made.
Economics of the Methods
These methods have to be simple enough to implement easily, as well as cost – effective to allow the products to be sold at a low cost.
· Charcoal, as well as sand, gravel and pebbles are easily obtainable materials.
· Similarly, the probes used in the circuit cost around Rs. 40 /- only and are available here : https://www.indiamart.com/proddetail/micro-test- prob-19203703797.html