In waterproof audio manufacturing, the speakers and horns used are all waterproof accessories, because once the speakers are filled with water, they may lose their function or even damage other internal parts of the audio.Hirays Technology, which has extensive experience in audio air tightness testing, brings you audio speaker air tightness testing solutions and application examples this time.The following is the content of this plan, let us understand it together.
Air tightness testing of Hai Ruisi audio speakers
one,Speaker waterproof technology
At present, speakers generally use waterproof membranes or waterproof coatings for waterproofing.This waterproof method reduces the sound loss during sound transmission, quickly restores breathability after contact with liquid, has extremely strong viscosity, and the product protection level is as high asIP67andIP68, providing a strong waterproof and dustproof barrier for the speaker.However, this waterproof method cannot use the naked eye to identify whether the air tightness is good or bad, and the waterproof quality cannot be controlled. It requires the use of an air tightness detector for identification.
The audio speakers that need to be tested this time
two,Difficulties in testing the air tightness of audio speakers
1. Audio speakers have various structures: some have source radiators, air holes, wiring harnesses, etc., while some do not;
2. The material of audio speakers is relatively soft and easy to deform, so the pressure resistance is limited. Coupled with the complex structure, many factors need to be considered to ensure non-destructive testing.
three,Hirays audio speaker air tightness detection solution
In response to the diverse structures of audio speakers,Hirays Technology Co., Ltd.The detector is divided into three parts: tester, air source, and tooling.Because the tester, air source, and tooling are independent entities, molds and corresponding tooling can be equipped according to the shape or details of the speaker.And the instrument system records a variety of waterproof level detection data."Positive and negative" pressure forms, and8There are three basic test modes, which can be selected individually or combined.use24BitA/Dconversion,32BitCPUComputing, and completely independently developed industrial control operating system, with full touch human-computer interaction interface.built-inRS232serial port,RJ45network port,USBcommunication interface,LTPexternalI/OControl port supports multiple communication protocols.This meets the need to detect different audio speakers and different waterproof levels.
In realizing non-destructive testing, the customized mold plays a certain protective role. When the upper and lower molds are closed, a good air-tight testing space is formed, which also isolates the speaker from damage caused by external factors during testing.When the air tightness detector is working, it will inflate the mold. However, considering that the material of the audio speaker is soft and prone to deformation, Hirays Technology needs to strictly control the air pressure in this link.As a result, the precision pressure sensor of the air tightness testing equipment starts to work, strictly monitors the air pressure changes in the mold, and controls the detected air pressure within a certain range.Finally, after a series of calculations, the gas leakage value can be obtained. Based on the leakage value, the airtightness and performance of the audio speaker can be detected.IPWaterproof rating.
Hirays audio speaker air tightness tester mold
Four,Hirays audio speaker air tightness testing details
five,Hirays audio speaker air tightness testing parameters
At present, Hirays Technology’s air tightness testing can realize the air tightness testing of audio speakers, wiring harnesses, charging ports and other whole parts or parts.
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