hello everyone
Im new in the world of arduino.
I am working on a small project of measuring the speed and direction of wind using ultrasonic sensor. Im planning to place 2 pair of hc-sr04 sensor facing each other.
My question is if it is possible to use the emitter on the 1st senor on the receptor of the a 2nd sensor. if yes, how is it possible?
sensor 1 (emitter) - sensor 2 (receptor)
sensor 2 (emitter) - sensor 1 (receptor)
Thank you
using the idea of Distance=speed * time
the distance is fixed, the time will varry from the disturbance of wind and thus we can calculate the speed.
the wind speed can be obtain by a formula [windspeed=speedofsound - (distance/time)] theoretically.
im not sure if its going work!! do you have any idea what i can do?
Perhaps this thread might help? Ultrasonic anemometers are definitely a thing- for the professional version see Gill Instruments | Manufacturer & Supplier of Meteorological Sensing Instruments
Here's a link to a project doing this
Bill
My question is if it is possible to use the emitter on the 1st senor on the receptor of the a 2nd sensor.
Not possible with HC-SR04 sensors.
I think you have to use phase information to get good resolution for this kind of sensor, not
time-of-flight, but that's only a hunch. So a limiting amp on the sensor followed with a phase
detector comparing with the tx signal...
For direction you'd use two sensor pairs at right angles and time-division multiplex them I think -
the devices are too directional for a single isotropic transmitter I believe.