Dongguan Yihui Company told everyone to discover the process of ultrasonic (ultrasonic welding machine knowledge)
In fact, before the birth of the ultrasonic welding machine or other ultrasonic equipment, because we can't capture some ultrasonic waves in our human ear, the earliest applied ultrasonic waves are animals, and the ultrasonic waves we found by humans are actually In a bat experiment, when people tied a lot of bell ropes in a dark room, but even if they were holding the bat's eyes, the bat would not hit the rope, but if they squatted on the bat ears, the bat It will lose its direction, and finally the scientists discovered that the bat can emit sound waves that are not captured by our ears, probably a wave of 20,000 to 100,000 Hz, but because of the bat itself. The ear can capture an echo of this sound wave, which is to use this radar-like way to judge whether the front is an insect or an obstacle.
When humans used ultrasound for the first time, during the First World War, people applied ultrasound to water warfare, using a sonar to detect submarines, etc. This is the first to launch some different waves into the water. The ultrasonic wave of the wave frequency is then subjected to a record analysis of the returned sound wave, and a shape distance and dynamics of the probe object are summarized from the characteristics of the return sound wave.
2016-11-17
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