The suggested water flow controller circuit utilizing a valve timer circuit may be executed by utilizing a basic two stage programmable timer design, as demonstrated in the above diagram.
We certainly have already mentioned this programmable timer circuit in one of my earlier articles. The similar concept continues to be employed in this design too.
Making reference to the diagram above we are able to see two similar timer phases utilizing the ICs 4060 which are combined with each other such that when the upper module completes counting, the lower gets activated and the series goes on incredibly from the upper timer to the lower and back to the upper timer module.
The functioning of the system might be recognized as described below:
When power is activated, the circuit will remain disabled since pin12 of the upper IC does not have any access to a ground for initiating the counting method.
In spite of this the moment water is introduced across the shown "water sensing points" the pin12 of the upper IC experiences a ground potential by means of these sensing conductors and immediately starts the counting process.
The initialization starts with a low at pin3 of the upper IC, the red LED now lights up showing the start of the counting practice by the system.
After nearly 2 minutes which can be set by properly adjusting P1, C1, the upper IC finishes its counting reverting its pin3 with a high logic, which immediately generates the relay by means of the linked BC547 driver stage. The relay clicks energizing the water valve mechanism into action.
The green LED at the same time lights up noticing the above activation of the relay and the valve.
The high from pin3 of the upper IC additionally ensures that the IC latches itself and stops counting for the present time, this really is used by the diode that's linked across pin3 and pin11 of the upper IC.
The above mentioned high from the pin3 of the upper IC at the same time triggers the lower BC547 into conduction which often grounds the pin12 of the lower IC, guaranteeing a initiating signal to the lower IC.
The lower IC now commences counting until 8 minutes have lapsed, this time period might be properly set by adjusting P2/C2 of the module. As soon as this set period elapses the pin3 of the lower IC goes high, "kicking" a initiating pulse to pin12 of the upper IC, which replies to this and immediately resets the upper IC into its original condition to ensure that it starts counting its required 2 minute slot.
The above process switches OFF the relay and the valve mechanism offering a free way for the water to flow again, for until 2 minutes have passed and the cycle repeats, but only provided that the water sensing points remain subjected to a water content.
We certainly have already mentioned this programmable timer circuit in one of my earlier articles. The similar concept continues to be employed in this design too.
Making reference to the diagram above we are able to see two similar timer phases utilizing the ICs 4060 which are combined with each other such that when the upper module completes counting, the lower gets activated and the series goes on incredibly from the upper timer to the lower and back to the upper timer module.
The functioning of the system might be recognized as described below:
When power is activated, the circuit will remain disabled since pin12 of the upper IC does not have any access to a ground for initiating the counting method.
In spite of this the moment water is introduced across the shown "water sensing points" the pin12 of the upper IC experiences a ground potential by means of these sensing conductors and immediately starts the counting process.
The initialization starts with a low at pin3 of the upper IC, the red LED now lights up showing the start of the counting practice by the system.
After nearly 2 minutes which can be set by properly adjusting P1, C1, the upper IC finishes its counting reverting its pin3 with a high logic, which immediately generates the relay by means of the linked BC547 driver stage. The relay clicks energizing the water valve mechanism into action.
The green LED at the same time lights up noticing the above activation of the relay and the valve.
The high from pin3 of the upper IC additionally ensures that the IC latches itself and stops counting for the present time, this really is used by the diode that's linked across pin3 and pin11 of the upper IC.
The above mentioned high from the pin3 of the upper IC at the same time triggers the lower BC547 into conduction which often grounds the pin12 of the lower IC, guaranteeing a initiating signal to the lower IC.
The lower IC now commences counting until 8 minutes have lapsed, this time period might be properly set by adjusting P2/C2 of the module. As soon as this set period elapses the pin3 of the lower IC goes high, "kicking" a initiating pulse to pin12 of the upper IC, which replies to this and immediately resets the upper IC into its original condition to ensure that it starts counting its required 2 minute slot.
The above process switches OFF the relay and the valve mechanism offering a free way for the water to flow again, for until 2 minutes have passed and the cycle repeats, but only provided that the water sensing points remain subjected to a water content.
No comments:
Post a Comment