2 results about "Sound intensity probe" patented technology

The invention relates to the technical field of sound insulation testing, in particular to a method and device for testing sound insulation of an automobile part based on wave velocity forming scanning and a vehicle, and the method comprises the steps: collecting noise information based on a sound collection array; selecting a scanning plane at a sound source and constructing a grid so as to restore noise hotspot information of the noise information to the scanning plane through beam forming analysis, and superposing the original geometric figure to obtain a wave velocity forming array; and determining the distribution information of the noise source of the to-be-detected automobile part according to the wave velocity forming array. Therefore, the problems that in the related technology, due to the fact that a sound intensity probe is used for testing points of a test piece every 10 cm, the test period is long, the position and angle deviation of the probe is prone to being caused by hand-held mobile testing, errors are large, the sound insulation index tested through a sound intensity method and the sound insulation index tested through a reverberation sound insulation method have test errors and need to be corrected, and the testing cost is high are solved. And the test efficiency and precision are not enough.

This utility model belongs to the field of sound insulation measurement and discloses an automatic scanning sound intensity method for measuring sound insulation. Its features include: a computer with a human-machine interface, an Arduino microcontroller, a three-axis linear slide module, and a sound intensity analyzer. The computer is connected to the Arduino microcontroller, which is connected to the motor drivers of the three-axis linear slide module. The sound intensity probe of the sound intensity analyzer is fixed on the end slide of the three-axis linear slide module. This device can not only automatically execute the sound intensity probe scanning path, but also set parameters such as scanning speed and measurement surface size through the human-machine interface, and display the scanning line trajectory. This not only reduces the influence of manual measurement on the measurement results and improves measurement accuracy and reliability, but also makes operation simple and intuitive.