Electric wave darkroom capable of carrying out acoustic testing and building method thereof

Abstract

The invention relates to an anechoic chamber which is capable of carrying out acoustic testing, which comprises an anechoic chamber, and is characterized in that acoustic material is laid on the ground and/or the inner wall of the anechoic chamber; and a damping spring is further arranged on the ground of the anechoic chamber. The invention further provides a method for manufacturing the anechoic chamber capable of carrying out acoustic testing, which comprises the following steps: firstly, designing and mounting an anechoic chamber as required; then designing acoustic material and a sound-insulating structure according to the sound absorbing and acoustic insulating requirements of the anechoic chamber; and finally selecting and arranging a damping spring according to the total weight of the anechoic chamber. As the acoustic material and the sound insulating material are added to the prior anechoic chamber, the anechoic chamber has the advantage that not only the testing and research of electromagnetic compatibility, but also the testing and research of acoustic testing can be carried out, thereby avoiding repeated construction and greatly saving the cost of engineering construction.

Description

technical field [0001] The invention belongs to the field of electromagnetic compatibility of high-voltage power transmission and transformation engineering, and specifically relates to an electric wave anechoic chamber capable of acoustic testing and a construction method thereof. Background technique [0002] At present, the other five surfaces of the anechoic chamber except the ground are covered with wave-absorbing materials, which mainly simulate the open test site, that is, when the electric wave propagates, there are only direct waves and ground reflected waves, and at the same time, it shields external electromagnetic wave signals. American FCC, ANCI C63.6, Japan's VCCI, IEC, CISPR and other standards allow the use of electromagnetic shielding anechoic chambers instead of open test sites for EMC testing, mainly used for EMC testing of electrical, electronic products, and automobiles in the corporate world. [0003] The anechoic chamber can provide a low-noise test en...

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Problems solved by technology

[0004] Existing anechoic chambers and anechoic chambers have single functions. If a test product needs to be tested for acoustic and electromagnetic compatibility at the same time, it needs to be carried out in a special anechoic chamber and anechoic chamber. The construction cost of the anechoic chamber is very high, ranging from a few million to tens of millions. Considering that the anechoic chamber and the anechoic chamber have many similarities in the building structure, if the anechoic chamber is built, some sound absorption measures can be considered , allowing it

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