Ultrasonic transmitters emit sound waves too high for human hearing and require a separate receiver. They have various applications, including animal training, material testing, distance sensing, and cleaning. They can be purchased separately or as part of specialty products.
An ultrasonic transmitter is a transmitter that produces emissions in the ultrasound range, at a frequency too high to be detected by the human ear. Ultrasound transmitters should not be confused with ultrasound transceivers, which are capable of transmitting and receiving information in the same unit. To receive information, a separate ultrasound receiver with an ultrasound transmitter is required. The two can be sold together if they are intended to be used as a pair, or can be purchased separately.
There is a wide range of applications for an ultrasonic transmitter and these devices can be used in many different applications. Hardware and electronics stores often carry these devices, sometimes packaged as part of specialty products. People can also build their own for custom applications or order these devices through manufacturers.
One situation where an ultrasound transmitter could be used is in ultrasound communications. These may include the transmission of various forms of data. For example, some games require users to use ultrasonic transmitters to control the game, with transmitter movements and various button activations sent to a base console via ultrasound. These devices can also be used in other types of communication units.
Animals such as dogs and bats are able to hear ultrasound. This can best be exploited with an ultrasonic transmitter which can be heard by animals, but not by people. The device can be used to broadcast a warning sound or signal that animals are trained to respond to or that animals will respond to because it resembles alarm calls and other communications made by wild animals.
Ultrasonic transmitters are also used in ultrasonic material testing, where sound waves are transmitted to a device and a receiver is used to gather information about how the sound interacts with the material. Variations in sound can reveal cracks, air bubbles and other defects.
These devices are also used in distance sensing. A paired transmitter and receiver can be used to gather information about a target’s location with the use of radiated sound waves, which can be used for mapping, weapon aiming, and a variety of other tasks. Similarly, ultrasonic transmitters are used in ultrasonic cleaning devices, with the ultrasound creating cavitation in the cleaning fluid which acts to clean objects placed in the device. One environment where ultrasonic cleaning can be seen is in the jewelry store, where rings and other jewelry are cleaned with ultrasound because it is gentle and very effective.
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