Alternative interfacing anemometer NRG 40 to Arduino

[sabdullah84]

hello all
attached diagram illustrates interfacing anemometer NRG 40c to Arduino
Iam hope that someone have an alternative circuit or design for interfacing so help me to reduce some electronic component and wire

The anemometer outputs a frequency which is linear with the wind speed which equates to 1.711 mph/Hz. However the output voltage ranges from 80mV p-t-p to approximately 12V p-t-p at 60Hz, which approximates to a wind speed of 100mph. The manufacturer states that the voltage is non-linear with wind speed, so as the wind speed increases so do both the frequency and amplitude, but only the frequency is a linear increase.
this is specification of nrg40c

NRG 40C Anemometer

[jremington]

Please post a conventional schematic diagram of your proposed circuit.

To measure frequency over that voltage range, most people would use a zero crossing detector.

A few more parts will probably be required to protect the op amp from being destroyed by overvoltage from the wind sensor.

[sabdullah84]

thank you
actually i don't understand what do you mean by (

@jremington

conventional schematic diagram

i suppose you mean i should draw it by special software

[jremington]

Pencil and paper works very well to make a schematic diagram. Take a photo of your artwork for posting.

Here is how to read (or draw) a conventional schematic diagram, which has been the world standard method to communicate circuit information for about 100 years:

https://learn.sparkfun.com/tutorials/how-to-read-a-schematic/all

Below is an example of a zero-crossing detector using an op amp. However, it would probably be destroyed if 12VAC were applied to the input, so a resistor in series with the input is required at the very least.