Knock sensor installed in the middle of the engine cylinder to four-cylinder machine as an example installed in the 2-cylinder and 3-cylinder, or 1, 2 cylinder in the middle of a 3,4-cylinder middle one. Its role is used to determine the engine jitter, when the engine is used to adjust the ignition

Ultrasound imaging is the use of ultrasonic sound beam scanning the human body, through the reflection of the signal reception, processing, in order to obtain the image of the body organs. Commonly used ultrasound equipment has a variety of: A type (amplitude modulation type) is the level of the amp

Ultrasound imagingUltrasound medicine is a combination of acoustics, medicine, optics and electronics. Where the study of higher than the audible frequency of acoustic technology, in the field of medical applications that is the ultrasound medicine. Including ultrasound diagnosis, ultrasound therap

Knock sensor is used to detect the engine engine block deflagration strength. Once the deflagration occurs, the ECU is instructed to delay the ignition and turn to the closed timing control of the ignition timing in order to adjust the ignition timing.Installed in the cylinder on the specific detect

Progress of Underwater Acoustic TransducerSince the 1960s, in order to achieve the sonar remote detection, the development of a number of new materials, structural vibration and energy conversion mechanism; the development of the work in low-frequency, broadband, high power and deep water transmitte

With the deepening of marine development, the related technologies for underwater exploration have been paid more and more attention. The key technologies of underwater acoustic detection are underwater acoustic transducer and signal processing. Underwater acoustic remote control system framework, a

Ultrasonic distance meter is mainly measured by the speed of sound, the naked eye can not see the injection line. There is a pointing device on the device. When the instrument is aimed at the target to be measured, it will appear on the display screen of the ultrasonic distance meter.Ultrasonic wave

Ultrasonic fish finder device uses the ultrasonic cavitation effect to produce lethality, ultrasonic action in the liquid can produce a large number of small bubbles. The utility model relates to an ultrasonic fishing machine, which is used for controlling the transmission and driving circuit, and a

Ultrasonic thickness measurement instrument is based on the principle of ultrasonic pulse reflection for thickness measurement, when the probe transmitted ultrasonic pulses through the material object to be tested interface, the pulse is reflected back to the probe through the accurately measuring o