Nowadays, waterproof has become a necessary performance of high-end audio, soAir tightness test of sound systemThe problem has become the focus of manufacturers, in order to achieve the sound waterproof grade standard, strict waterproof testing is needed. This time, customers who seek solutions from Harris technology specify their needsAir tightness test of hemispherical soundThe following is the solution that Harris technology provides for customers.
1Customer testing requirements
The customer needs to test the sound shape for hemispherical, each sound detection speed should be controlled in 10-15 seconds, in order to ensure that the sound outside and inside are not damaged under the premise of air tightness test. In addition, the customer askedAir tightness test of hemispherical soundThe instrument should collect and integrate the test result data, so that customers can track the sound sealing situation and provide data reference for later production adjustment.
2Air tightness test of hemispherical sounddifficulty
This kind of sound is hemispherical, and the sound holes are distributed in the curve of the soundIt is difficult to detect the air tightness. Secondly, the sound needs to achieve non-destructive testing, and indirect testing should be used to protect the sound appearance.
This time, Harris TechnologytestingOur products
3Brief introduction of hiris technology solutions
In order to solve the difficulty of hemispherical sound air tightness detection, hiris technology customized the mold before the detection, put the sound into the mold, and after the upper and lower molds are closed, a sealed detection space will be formed, and the mold can also be usedProtect the sound from damage during detection. At this time, after the tooling connected with the mold is started, a certain volume of gas is injected into the mold through the air source, then the compressed air supply is cut off, and the pressure is stabilized for a period of time. Harris TechnologyThe air tightness detection system will monitor the air pressure in the mold,The leak rate is used to judge the tightness.
When the sound reaches the required waterproof level, the pressure value and leakage value displayed on the instrument have no obvious fluctuation, and the test result of the instrument shows "OK", indicating that the sound has passed the air tightness test. When the sound is not sealed, the pressure value will drop and the leakage value will rise. If it exceeds the standard value, the test result of the instrument will be displayedNG, indicating that the air tightness test fails. During this period, all the test data will be recorded by the air tightness tester, and the test speed will be less than 06-8Second, to meet the customer's speed requirements.
4Harris TechnologyAir tightness test of hemispherical soundInstrument display
5Air tightness test of hemispherical soundDisplay the details of the instrument
6Related function description
1The tester can support leakage test, blocking test, positive pressure test, negative pressure test and other leakage test methods. The test range is wide, and users can choose according to their own test needs.
2Large size touch screen is used as the human-machine interface, which can easily monitor the test results and set various parameters in the process of waterproof test.
3It has the alarm function of qualified and unqualified products, which can eliminate the possibility of manual misjudgment and misinspection.
4, band4Circuit switch input and output8It can accept the control of external sensors and switch buttons, and can control the external relay, solenoid valve and other executive components, so as to realize the full automation of the test conveniently.
5, tester ownedtwo hundredBy setting the parameters of the subprogram on the touch screen, the user can connect different subprograms in series to form a test processI/OThe interface enables the leakage meter to receive control signals from external sensors and control external actuators (relays, solenoid valves, etc.). So as to realize the automation of the test process.
6, with test data recording function, you can download test data toUDisk, and through the computer display.
7With bar code scanning function, it can track and record defective products and repair situation; The function of upper computer.
Harris TechnologyAir tightness test of hemispherical soundInstrument function interface
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