Ultrasonic sensor can make a sound range,by the reflecting result(Which we can collect from the sensor),there are any possibilities to use the data for metal detecting?
No, this sensor is only a cheap device for range detection in air, e.g. distance control (parking aid for vehicles, obstacle avoidance for drones etc.).
No, you cannot use that type of sensor, however if you look to use unexpansive way to measure in metal, you could look for a ceramic ring (like http://www.morgantechnicalceramics.com/), nevertheless you should use a very good way to improve the ultrasound signal
To detect the metal using ultrasound irradiate the object with a microwave field, take the reflected microwave signal . If at the same time in the spectrum of the reflected signal detect the spectral component with the frequency of ultrasound means in the object there is a metal. The more powerful the spectral component-the more metal.
Для обнаружения металла с помощью ультразвука облучить объект микроволновым полем, принимать отраженный СВЧ сигнал . Если при этом в спектре отраженного сигнала обнаружите спектральную составляющую с частотой ультразвука значит в объекте существует металл. Чем мощнее спектральная составляющая - тем больше металла. Проще всего исследуемое вещество надо сыпать (вливать) на ультразвуковой датчик, облучая его СВЧ полем .
Metal detectors can be categorized as a class of materials detectors that are able to differentiate the metals from nonmetals. Since the sound and ultrasound waves propagation properties depend on the density and stiffness which could not have a great difference between the metals and nonmetals then the use of ultrasound waves may not be be very decisive in this issue. Since the metals have exceedingly high electrical conductivity than the non metals then the use of electrical method to detect the metals are commonly used including the use of electromagnetic waves. The reflection coefficient of the electromagnetic waves by the metals is very high and therefore it is used in radar.
However there is specific sound velocity for a definite material, so if you can send the speed of the sound wave it may be more better decisive metal detector than the reflection.
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