CN110895166A - Automatic noise testing method - Google Patents
Automatic noise testing method Download PDFInfo
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- CN110895166A CN110895166A CN201811398249.7A CN201811398249A CN110895166A CN 110895166 A CN110895166 A CN 110895166A CN 201811398249 A CN201811398249 A CN 201811398249A CN 110895166 A CN110895166 A CN 110895166A
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- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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Abstract
The invention provides a noise automatic testing method. The method comprises the following steps: receiving test configuration parameters input by a user through a user configuration interface; calculating the surface area, the surface average sound pressure level and the background noise surface sound pressure level of the equipment to be tested according to the test configuration parameters; if the difference value between the surface average sound pressure level and the background noise surface sound pressure level is larger than a preset value, calculating the sound power level of the equipment to be tested, otherwise, correcting the surface average sound pressure level and calculating the sound power level of the equipment to be tested; and comparing the sound power level with the equipment noise requirement to determine whether the equipment to be tested meets the noise requirement. According to the invention, the sound pressure level of noise is acquired by the sound sensor, the sound power level and the judgment result are automatically calculated by the computer, so that the error rate caused by manual intervention can be reduced, the accuracy of the test result is ensured, and the test efficiency is improved.
Description
Technical Field
The invention relates to the technical field of automatic testing, in particular to a noise automatic testing method.
Background
For a server and an industrial control computer (for short, an industrial personal computer), the traditional noise test method is that an operator holds a noise measuring instrument to measure the sound pressure level of the server or the industrial personal computer to be tested, then the sound power level is obtained through manual calculation, and then standard is inquired to compare data to obtain a test conclusion.
In the process of implementing the invention, the inventor finds that at least the following technical problems exist in the prior art:
the manual calculation of the sound power level is complex, cumbersome, error-prone, and has very high technical requirements for the operator, requiring the operator to be very familiar with relevant knowledge and industry standards in terms of acoustics.
Disclosure of Invention
According to the automatic noise testing method provided by the invention, the sound pressure level of the noise is collected through the sound sensor, the sound power level and the judgment result are automatically calculated through the computer, the error rate caused by manual intervention can be reduced, the accuracy of the testing result is ensured, and the testing efficiency is improved.
The invention provides a noise automatic test method, which comprises the following steps:
receiving test configuration parameters input by a user through a user configuration interface;
calculating the surface area, the surface average sound pressure level and the background noise surface sound pressure level of the equipment to be tested according to the test configuration parameters;
if the difference value between the surface average sound pressure level and the background noise surface sound pressure level is larger than a preset value, calculating the sound power level of the equipment to be tested;
if the difference value between the surface average sound pressure level and the background noise surface sound pressure level is smaller than or equal to the preset value, correcting the surface average sound pressure level, and calculating the sound power level of the equipment to be tested;
the acoustic power level is compared to the device noise requirement to determine whether the noise requirement is met.
According to the automatic noise testing method provided by the embodiment of the invention, the sound pressure level of the noise is collected by the sound sensor, the sound power level and the judgment result are automatically calculated by the computer, and the error rate caused by manual intervention can be reduced to ensure the accuracy of the testing result and improve the testing efficiency.
Drawings
FIG. 1 is a flow chart of a noise automatic test method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of field scene construction of the noise automation test.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a noise automatic test method, as shown in fig. 1, the method comprises the following steps:
and S11, receiving the test configuration parameters input by the user through the user configuration interface.
The test configuration parameters comprise the type, length, width, height and size of the equipment to be tested, and the idle state sound pressure level and the background noise sound pressure level of each test point on the reference body of the equipment to be tested.
And S12, calculating the surface area, the surface average sound pressure level and the background noise surface sound pressure level of the equipment to be tested according to the test configuration parameters.
If the difference between the surface average sound pressure level and the background noise surface sound pressure level is greater than a preset value, performing step S13; otherwise, step S14 is executed.
And S13, calculating the sound power level of the equipment to be tested.
And S14, correcting the surface average sound pressure level, and calculating the sound power level of the equipment to be tested.
S15, comparing the acoustic power level with the device noise requirement to determine whether the noise requirement is met.
According to the automatic noise testing method provided by the embodiment of the invention, the sound pressure level of the noise is collected by the sound sensor, the sound power level and the judgment result are automatically calculated by the computer, and the error rate caused by manual intervention can be reduced to ensure the accuracy of the testing result and improve the testing efficiency.
Optionally, the idle state sound pressure level is obtained by: when the device to be tested is in an idle state, sound pressure levels of the test points in 3 test periods are collected through a sound sensor, the maximum sound pressure level in each test period is recorded, and the average maximum sound pressure level of the 3 test periods is used as the idle state sound pressure level of the test points.
The background noise sound pressure level is obtained by the following method: when the device to be tested is in a shutdown state, sound pressure levels of the test points in 3 test periods are collected through a sound sensor, the maximum sound pressure level in each test period is recorded, and the average maximum sound pressure level of the 3 test periods is used as the background noise sound pressure level of the test points.
Optionally, the types of devices under test include servers and industrial control computers.
To understand the present invention in more detail, a field scenario set-up diagram of noise automation testing is shown in fig. 2.
Arrangement of test points
The device to be tested is placed on the test table plane of the quiet room, wherein l1，l2，l3Respectively, the length, width and height of the device to be tested, and d is required to be more than l1，l2，l3This time, d is 1 m. 2a, 2b and c are respectively the length, width and height of the reference body enveloping the noise of the device to be measured. Wherein 2a ═ l1+2d，2b＝l2+2d，c＝l3+ d. One acoustic sensor is placed at each of points 1-9 on fig. 2 to collect the sound pressure level at that test point. Wherein, the points 1-4 are respectively positioned on the left side surface, the right side surface, the front surface and the back surface of the reference body, the height is consistent with that of the equipment to be measured, namely, the center point of each surface, the point 9 is positioned at the midpoint of the upper surface of the reference body, and the points 5-8 are positioned at the top points of the upper surface of the reference body.
Duration of the test
The test duration is 3 test periods, each test period is 10s, and sound pressure level data of each test point position are collected through the sound sensor.
Test point idle state and background noise sound pressure levels
And the equipment to be tested enters an idle state, the maximum value of the sound pressure level in each test period is taken, and then the average of the maximum values of the sound pressure levels in 3 test periods is taken as the idle state sound pressure level of the test point.
And the equipment to be tested enters a shutdown state, the maximum value of the sound pressure level in each test period is taken, and then the average of the maximum values of the sound pressure levels in 3 test periods is taken as the background noise sound pressure level of the test point.
User configuration interface
The user configuration interface is used for providing an interface for a user to input test configuration parameters for configuring the equipment to be tested, wherein the test configuration parameters comprise the type, the length, the width, the height and the size of the equipment to be tested and the idle state sound pressure level L of each test point on the reference body of the equipment to be tested1iAnd background noise sound pressure level L2i。
The type of the device to be tested is determined by the noise requirement of the device to be tested, for example, the noise requirement of the server is that the sound power level does not exceed 65dB, and the noise requirement of the industrial application microcomputer is that the sound power level does not exceed 60 dB.
The calculation formula of the surface average sound pressure level and the background noise surface sound pressure level is as follows:
The test points of the reference body form a minimal rectangular parallelepiped imaginary surface which exactly envelops the sound source and terminates on one or more reflecting surfaces, wherein the surface area S of the reference surface is calculated as follows:
S＝4(ab+ac+bc)
wherein a is 0.5l1+d；b＝0.5l2+d；c＝l3+d；d＝1。
Calculation of the acoustic power level
When the difference between the surface average sound pressure level and the surface sound pressure level of the background noise is larger than the preset value by 15dB, the calculation formula of the sound power level is as follows:
When the difference between the surface average sound pressure level and the background noise surface sound pressure level is less than or equal to the preset value of 15dB, the calculation formula of the sound power level is as follows:
judgment of results
The description here takes as an example the types of devices under test including servers and industrial application microcomputers:
if the type of the equipment to be tested is the server, then when the sound power level calculation result L is obtainedwAnd when the power is less than or equal to 65dB, outputting a 'Pass' result, wherein the result represents that the noise of the equipment to be tested meets the requirement, otherwise, outputting 'Fail'.
If the type of the equipment to be tested is an industrial application microcomputer, then the result L is calculated when the sound power levelwAnd when the power is less than or equal to 60dB, outputting a 'Pass' result, wherein the result represents that the noise of the equipment to be tested meets the requirement, otherwise, outputting 'Fail'.
Therefore, the sound pressure level data acquisition method has the advantages that the sound sensor is used for replacing an operator to acquire the sound pressure level data, so that the manual influence is reduced, and the accuracy of the acquisition result is ensured; in addition, the sound power level and the judgment result are automatically calculated by the computer, so that the error rate caused by manual intervention can be reduced, the accuracy of the test result is ensured, and the test efficiency is improved.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. An automated noise testing method, comprising:
receiving test configuration parameters input by a user through a user configuration interface;
calculating the surface area, the surface average sound pressure level and the background noise surface sound pressure level of the equipment to be tested according to the test configuration parameters;
if the difference value between the surface average sound pressure level and the background noise surface sound pressure level is larger than a preset value, calculating the sound power level of the equipment to be tested;
if the difference value between the surface average sound pressure level and the background noise surface sound pressure level is smaller than or equal to the preset value, correcting the surface average sound pressure level, and calculating the sound power level of the equipment to be tested;
the acoustic power level is compared to the device noise requirement to determine whether the noise requirement is met.
2. The method of claim 1, wherein the test configuration parameters include a type of the device under test, length, width, height, and size data, and idle state and background noise sound pressure levels for each test point on a reference body of the device under test.
3. The method of claim 2, wherein the idle state sound pressure level is obtained by: when the device to be tested is in an idle state, sound pressure levels of the test points in 3 test periods are collected through a sound sensor, the maximum sound pressure level in each test period is recorded, and the average maximum sound pressure level of the 3 test periods is used as the idle state sound pressure level of the test points.
4. The method of claim 2, wherein the background noise sound pressure level is obtained by: when the device to be tested is in a shutdown state, sound pressure levels of the test points in 3 test periods are collected through a sound sensor, the maximum sound pressure level in each test period is recorded, and the average maximum sound pressure level of the 3 test periods is used as the background noise sound pressure level of the test points.
5. The method of claim 2, wherein the type of the device under test is determined by noise requirements of the device under test.
6. The method of claim 1, wherein the surface average sound pressure level and the background noise surface sound pressure level are calculated as follows:
7. The method of claim 6, wherein when the difference between the surface average sound pressure level and the background noise surface sound pressure level is greater than a predetermined value, the sound power level is calculated as follows:
8. The method according to claim 6, wherein the sound power level when the difference between the surface average sound pressure level and the background noise surface sound pressure level is less than or equal to a preset value is calculated as follows:
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| CN201811398249.7A CN110895166A (en) | 2018-11-22 | 2018-11-22 | Automatic noise testing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115031829A (en) * | 2022-06-06 | 2022-09-09 | 扬芯科技(深圳)有限公司 | Product noise testing method and system |
| CN117012231A (en) * | 2023-10-07 | 2023-11-07 | 中国铁路设计集团有限公司 | Method for identifying noise sources of adjacent rooms caused by indoor equipment |
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| CN104897275A (en) * | 2015-06-23 | 2015-09-09 | 武汉工程大学 | Engine noise testing method based on outfield airplane |
| RU2660763C1 (en) * | 2017-06-14 | 2018-07-09 | Олег Савельевич Кочетов | Object in the reverberation chamber acoustic characteristics studying method |
| CN108801447A (en) * | 2018-07-06 | 2018-11-13 | 零零二信息科技（沧州）有限责任公司 | A kind of wind energy conversion system noise measuring system and test method |
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Patent Citations (5)
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| CN103994892A (en) * | 2014-05-05 | 2014-08-20 | 中国汽车技术研究中心 | Test system for vehicle acoustical power and test method thereof |
| CN104156554A (en) * | 2014-05-23 | 2014-11-19 | 国家电网公司 | Method for recording and evaluating noise of transformer |
| CN104897275A (en) * | 2015-06-23 | 2015-09-09 | 武汉工程大学 | Engine noise testing method based on outfield airplane |
| RU2660763C1 (en) * | 2017-06-14 | 2018-07-09 | Олег Савельевич Кочетов | Object in the reverberation chamber acoustic characteristics studying method |
| CN108801447A (en) * | 2018-07-06 | 2018-11-13 | 零零二信息科技（沧州）有限责任公司 | A kind of wind energy conversion system noise measuring system and test method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115031829A (en) * | 2022-06-06 | 2022-09-09 | 扬芯科技(深圳)有限公司 | Product noise testing method and system |
| CN117012231A (en) * | 2023-10-07 | 2023-11-07 | 中国铁路设计集团有限公司 | Method for identifying noise sources of adjacent rooms caused by indoor equipment |
| CN117012231B (en) * | 2023-10-07 | 2023-12-12 | 中国铁路设计集团有限公司 | Method for identifying noise sources of adjacent rooms caused by indoor equipment |
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