What is the application of ultrasonic technology in life?

Most people have been "treated" before birth-in order to understand our health, my mother took us to have a B-ultrasound when we were just a few months old. B-ultrasound is the most extensive and influential application of ultrasound technology in clinical medicine.

2. Ultrasonic ranging

If B-ultrasound is the most popular ultrasonic application, then the most popular ultrasonic technology application is ultrasonic ranging. The most common one is the parking assist system (commonly known as "parking radar"). The system sends out ultrasonic waves, uses the time difference of ultrasonic reflection to measure the distance, and reminds the driver of the obstacles around by voice prompts to guide the safe reversing.

With the upgrading of manufacturing industry and the development of artificial intelligence, ultrasonic ranging has been widely used in mobile robots in recent years because of its advantages of convenient calculation and high measurement accuracy.

3. Ultrasonic underwater communication

Sonar is the most widely used and important ultrasonic underwater communication equipment at present. The highest is that the navies of various countries use it to detect, locate and track underwater objects such as submarines. In addition, sonar technology is also widely used in torpedo guidance, fish exploration, offshore oil exploration and so on.

3. Ultrasonic processing

The application of ultrasonic technology in industrial field is mainly ultrasonic processing. Ultrasonic machining is a kind of special machining which uses high-frequency vibration of ultrasonic to slightly impact the material, so that the machined surface of the material is gradually broken.

4. Ultrasonic welding

Ultrasonic welding uses high-frequency vibration waves to transmit to the surfaces of two objects to be welded, and the surfaces rub against each other under pressure to form fusion between molecular layers. Mainly used in the fields of plastics and metals, and widely used in automobile, refrigeration, solar energy, batteries, electronics and other industries. For example, the welding of lithium batteries and the sealing of copper tubes in refrigerator air conditioning industry.

5, ultrasonic cleaning

Good effect, high speed, no need for human hands to touch the cleaning solution, and no damage to the surface of the object. Where do these advantages of ultrasonic cleaning come from? Ultrasonic cleaning is based on cavitation phenomenon, that is, countless bubbles quickly form and implode in the cleaning solution, and the generated impact force peels off the dirt on the inner and outer surfaces of the objects soaked in the cleaning solution, thus achieving the purpose of accurate cleaning.

6. Ultrasonic flaw detection

Aerospace, railway transportation, water conservancy projects and other major equipment and facilities can not tolerate any flaws. How to quickly, conveniently and accurately detect, locate, evaluate and diagnose various defects inside the workpiece in daily safety inspection? Ultrasonic flaw detection is those "golden eyes".

7. Ultrasonic fingerprint identification

Wet hands can't unlock the phone, so is there a fingerprint that is not afraid of water to unlock it? The answer is ultrasonic fingerprint identification. Xiaomi 5S and Huawei glory 10 are unlocked by ultrasonic fingerprint recognition. From the time point of view, ultrasonic fingerprint identification should be regarded as the latest application of ultrasonic technology.

Extended data

Characteristics of ultrasonic wave

1) When ultrasonic wave propagates, the wave length is short, the directivity is strong, and the energy is easy to concentrate.

2) Ultrasonic waves can propagate in different media and far enough.

3) The interaction between ultrasonic wave and sound transmission medium is moderate, and it is easy to carry information about the state of sound transmission medium, which can be used for diagnosis, function and treatment of sound transmission medium.

4) Ultrasonic wave can spread effectively in gas, liquid, solid, solid melt and other media.

5) Ultrasonic waves can transmit energy.

6) Ultrasonic waves will produce reflection, interference, superposition and * * * vibration.