At home I have a water meter that has an LC attached to the rotating dial that measures the water.
The official detection circuit is using a coil to pick up the LC and check its resonance. Thus it is able to count the rotations.
I would like to achieve the same, considering the 'easy way' of a proximity detector does not work.
The meter can be found at honeywell V200P and it lists the detection circuit as the falcon PR6
This states:
"
The mode of operation relies on the principle of electrical oscillating circuit. This information displays the number of electrical oscillations that exceeds a fixed treshold value. Once the rotating metallized half disc of the water meter register is located under one of the 3 coils of
the Falcon module, the vibration is dampened. As a result of the dampening effect, only a small number of amplitudes exceeds the fixed treshold value. This change is measured and processed by a processor.
"
This model does not use a metal disk, but the coil and assumed capacitor at the back
OBJECTIVE: to create a circuit and use an ESP8266 (or arduino, 3V3 if possible) to achieve the same effect and report to upstream systems.
Idea so far: connect a coil to an oscillator based on a transistor and trigger the interrupt of the MicroProcessor
Closest circuit found till now: OPAMP LC
I hope you can help me?
I can calculate stuff and know a bit but want to get some direction before spending days in the wrong direction.
PS. My first post on the forum, so bear with me
The official detection circuit is using a coil to pick up the LC and check its resonance. Thus it is able to count the rotations.
I would like to achieve the same, considering the 'easy way' of a proximity detector does not work.
The meter can be found at honeywell V200P and it lists the detection circuit as the falcon PR6
This states:
"
The mode of operation relies on the principle of electrical oscillating circuit. This information displays the number of electrical oscillations that exceeds a fixed treshold value. Once the rotating metallized half disc of the water meter register is located under one of the 3 coils of
the Falcon module, the vibration is dampened. As a result of the dampening effect, only a small number of amplitudes exceeds the fixed treshold value. This change is measured and processed by a processor.
"
This model does not use a metal disk, but the coil and assumed capacitor at the back
OBJECTIVE: to create a circuit and use an ESP8266 (or arduino, 3V3 if possible) to achieve the same effect and report to upstream systems.
Idea so far: connect a coil to an oscillator based on a transistor and trigger the interrupt of the MicroProcessor
Closest circuit found till now: OPAMP LC
I hope you can help me?
I can calculate stuff and know a bit but want to get some direction before spending days in the wrong direction.
PS. My first post on the forum, so bear with me