Sounds like a plan to me.
But as said, i can use one 'speaker' placed in the center of the smaller mouth of the cone to transmit and receive at the same time (of course with a small delay between switching from transmit to receive but that should be no problem as the echo will take enough time...
I have thought about this before but I am not sure if the beam will stay sharp or if it will spread like the one from the other sensor.
Right now i can only get the HCSR04 sensor to hand. But if my idea fails, i might try this one.
That sounds like an idea if the offset paraboloid is too difficult to find or make, i will try to use a cone.
But isn't there a chance that, like Sophiecentaur said, when exiting the hole of the cone the beam might suffer from diffraction?
Also i am not sure if there is a significant energy loss while hitting the reflector reducing so the range. I will have to do some calculation before i start doing something.
What i need is somekind of pencil beam with a good range of about 300cm.
It says on the file that range would be about...
Yeah i making that shape won't be easy for me as I am not experienced in making metal shapes or even plastic ones.
Yeah i can use the TX as RX alternativley that won't be a problem.
About the cone, is there a fixed angle it needs to have? So the waves enter the small 'hole' and leave the larger...
Actually i am trying to make it more 'precise' reducing the spread to be able to use it to locate an object knowing exactly where it is. (like Infrared)
And like you said, also to improve on distance. (not sure if possible)
I just hope the reflector will not have to be too big.
And last, like...
I hope this file can help you understand the sensor and get some information about it. (size, etc.)
Dont really want to get too much into electronics though as this ia a physics website.
By the way, if it would not be possible, i could use the source as input and output at the same time.
You are right, i havn't noticed that. I also havn't really given a thought about it. But that answers my question.
That answerd, Placed near the source there will also be the receiver with a distance of 2 cm from the source. Think of it as a small ultrasonic range measurement device.
When...
I have 2 types of sound reflectors on the image attached.
The angles are not proportional but you should get the idea.
The black circle is the source, the black lines are the waves and the red lines are the reflections of the waves emitted by the source.
My target is to reflect the sound waves...