Sound box air leakage detection device and detection method

Abstract

The invention discloses a sound box air leakage detection device and detection method. The detection device comprises a control main board, air source equipment, a pressure regulation valve, an electromagnetic valve, a pressure sensor and an air flow sensor. In the detecting process, firstly, air flow L1 when a sound box is not connected is detected by utilizing the detection device, then air flow L2 when the sound box is connected is detected by utilizing the detection device, and a difference value delta L=L1-L2 of the flow obtained in two times of detections is compared with a flow difference value range of a standard in the process so as to judge whether the sound box is qualified. The detection device and the detection method are high in detection accuracy, high in detection efficiency and beneficial to batch production of a factory.

Description

technical field [0001] The invention relates to the technical field of sound boxes, in particular to a sound box air leakage detection device and detection method. Background technique [0002] In the speaker industry, sound quality is an important detection index. For good design but poor sound quality produced in the factory production process, it mainly includes the following two aspects: 1) The performance of electronic components is not good, resulting in changes in the frequency and amplitude of the sound. Poor; 2) The speaker structure leaks air, resulting in poor sound quality. The purpose of the speaker box is mainly to prevent the sound wave signals on the front and back of the speaker diaphragm from directly forming a loop, so that only the high and medium frequency sounds with a small wavelength can be transmitted, while other sound signals are superimposed and canceled out. [0003] In the production process of the factory, sound analysis instruments are genera...

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Problems solved by technology

[0003] In the production process of the factory, sound analysis instruments are generally used to detect sound quality problems caused by electronic components, but when the speaker is leaking air, it can only detect the sound quality problem of the speaker when there is serious air leakage, and the detection accuracy is not high

[0004] At this stage, most of the air leakage sound quality inspection can only be done by professional personnel with their ears and random inspection, which is not conducive to the mass production of the factory and affects the quality

[0005] In summary, the speaker air leakage detection device and detection method are inconvenient in practice, so it is necessary to improve

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