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A sonar transducer is the element in the sonar apparatus that turns the electrical signal into sound, which is mechanical energy, and then does the opposite for returning signals. A generator of some kind creates and amplifies the electrical signal, it is directed to the transducer, which then makes the conversion, and the pulse is sent out. The transducer then "listens" for returning energy, and converts anything that comes back into an electrical signal which is sent to the receiver. Sonar is (briefly) the use of sound (which is mechanical energy) to "look at stuff" in in water or other media. An electrical signal is generated by the equipment, and it is changed into mechanical energy by a special crystal in the same way a speaker changes electrical energy into sound we hear. The transducer is a piezoelectric crystal that works on the principle of the same name. Let's look at a transducer and see how it works, but first let's see what the underlying physics says about it. Piezoelectric crystals are crystals that change shape when we apply a voltage across the crystal. Depending on the placement of the leads that apply the voltage and the orientation of the crystal, it will expand or contract to a DC voltage. If we reverse the polarity of the applied voltage, the crystal will contract or expand (respectively) in just the opposite way. Applying an AC voltage causes the crystal to respond in that same way, and it will vibrate. These vibrations travel through the water or other media we are applying it to. The sonar transducer is a crystal mounted in a "holder" or some kind. It has electrical leads attached. The whole of this is "packaged" appropriately depending on whether it is going to be mounted on the hull of a vessel or held in the hand by an operator. A link is provided to a group of pictures of different types of transducers posted at Photobucket. Surf on over and have a look.
What else can I help you with?
A sonar transducer is most similar to a?
speaker
Who invented transducer?
transducer was invented by
What is pressure transducer?
please give a simple defineatoin of transducer.
What is force balance transducer pneumatic?
explain force balance transducer
Whether strain gauge is an active transducer?
Yes.it is an active transducer.
A sonar transducer is most similar to a?
speaker
How does sonar work using sound energy?
Sonar works by emitting sound waves from a transducer into the water. These sound waves travel through the water until they encounter an object, at which point they bounce back to the sonar device. By measuring the time it takes for the sound waves to return, the sonar device can calculate the distance to the object.
Bearing resolution of a sonar?
Bearing resolution in sonar refers to the ability to distinguish between two closely spaced objects in terms of their direction relative to the sonar transducer. It depends on factors like the beamwidth, signal processing techniques, and the frequency of the sonar system. Higher bearing resolution allows for better target discrimination and localization.
How is sonar waves created?
Sonar waves are created by emitting sound pulses into the water from a transducer. These sound pulses travel through the water until they hit an object, which reflects the sound back towards the source. By measuring the time it takes for the sound to return, sonar systems can calculate the distance and shape of the object.
What are the limits of a sonar?
The range of a sonar system is typically limited by the power of the sound source and the sensitivity of the receiver. Depth limitations can also be affected by water temperature, salinity, and turbidity, which can absorb or scatter sound waves. Additionally, the resolution of a sonar system may be limited by factors such as the frequency of the sound waves and the size of the transducer.
What are the parts of an active sonar?
The parts of an active sonar system include a transducer to convert electrical signals into sound waves, a projector for emitting the sound waves into the water, a receiver to detect the echoes from objects, and signal processing equipment to analyze and interpret the received signals.
What are sonar rays?
Sonar rays are often used interchangeably with the term "sound waves" in the context of underwater communication and navigation. Sonar technology uses sound waves to detect objects or measure distances underwater by reflecting off surfaces. Sonar rays are emitted by a transducer and bounce back when they encounter an object, allowing for the calculation of distance and mapping of the underwater environment.
What did Paul Langevin invent?
Paul Langevin was a French physicist who made significant contributions to the fields of magnetism and acoustics. He is best known for inventing the Langevin transducer, a device that converts electrical energy into mechanical vibrations and vice versa, which has applications in sonar and ultrasound technology. Langevin also conducted pioneering research in the development of sonar systems during World War I.
List of active transducer?
thermocouple,piezoelectric transducer,photoelectric transducer.
Who invented transducer?
transducer was invented by
What is prncipal of transducer?
The basic principle of a transducer: A transducer which converts a physical quantity to the electrical quantity.
What is Electronic depth-sounding equipment which allowed scientists in the 1920's and later to precisely measure the ocean depth?
The equipment is called a "fathometer" or "echo sounder." It works by emitting sound waves from a transducer on a ship, which bounce off the seafloor and return to the transducer. By measuring the time it takes for the sound waves to return, the depth of the ocean can be accurately determined.
