CN117234828A - Method and system for testing hard disk performance influenced by vibration noise - Google Patents
Method and system for testing hard disk performance influenced by vibration noise Download PDFInfo
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- CN117234828A CN117234828A CN202210634282.5A CN202210634282A CN117234828A CN 117234828 A CN117234828 A CN 117234828A CN 202210634282 A CN202210634282 A CN 202210634282A CN 117234828 A CN117234828 A CN 117234828A
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Abstract
A method for testing the effect of vibration noise on hard disk includes such steps as recording the vibration noise generated by server to generate original sound source file, playing the original sound source file by loudspeaker, recording the vibration noise generated by loudspeaker to generate a vibration noise source file, generating the first sound level spectrum by processor, generating the second sound level spectrum by processor, regulating the second sound level spectrum to match the first sound level spectrum by equalizer, generating updated vibration noise source file by processor, playing the updated vibration noise source file by loudspeaker, and measuring the data reading speed of hard disk by read rate tester.
Description
Technical Field
The present invention relates to a system and a method for testing the performance of a hard disk by using vibration noise, and more particularly to a system and a method for testing the performance of a hard disk by using vibration noise frequency and sound pressure.
Background
Computer systems, including desktop computers, industrial computers, servers, etc., typically perform data access operations through hard disks, but as the storage density of hard disks increases, the sensitivity of hard disks increases. Because the heat generated by the central processing unit is more and more obvious, the fan also needs to increase the rotating speed to dissipate heat, so that the generated noise and vibration are larger and larger, the hard disk is often influenced by the vibration noise to reduce the efficiency (such as the reduction of the read-write rate of the hard disk or incapacity of operating, etc.), even if the central processing unit of the computer system operates at a higher speed, the data cannot be normally accessed, the operation of the computer system is further influenced, the hard disk is damaged in the worst case, and important data loss of customers can be caused. The existing method for testing the sound pressure sensitive frequency of the hard disk is to use single-frequency sound with different frequencies to play back the hard disk, measure the performance of the hard disk and evaluate the sensitive frequency of the hard disk. But it is unable to reproduce the real sound pressure received by the hard disk in the server, and the influence of the multi-frequency range is not considered. Because the source of the single-frequency sound is a signal generator and a correction mechanism of feedback is lacked, the sound pressure adjustment of the single-frequency sound is not accurate enough, and errors exist in the measurement of the performance of the hard disk.
Disclosure of Invention
The embodiment provides a test method for influencing the performance of a hard disk by vibration noise, which is used for a test system. The test system comprises a recording device, an equalizer, a processor, a loudspeaker, a hard disk and a reading rate tester. The method for influencing the performance of the hard disk by vibration noise comprises the steps that a recording device records vibration noise emitted by a server to generate an original sound source file, a loudspeaker plays the original sound source file, when the loudspeaker plays the original sound source file, the recording device records vibration noise emitted by the loudspeaker to generate the vibration noise source file, a processor generates a first sound pressure level frequency spectrum (Sound Pressure Level, SPL) according to the original sound source file, the processor generates a second sound pressure level frequency spectrum according to the vibration noise source file, an equalizer adjusts the second sound pressure level frequency spectrum to be consistent with the first sound pressure level frequency spectrum, the processor generates an updated vibration noise source file according to the adjusted second sound pressure level frequency spectrum, the loudspeaker plays the updated vibration noise source file to the hard disk, and a reading rate tester measures the data reading rate of the hard disk when the loudspeaker plays the updated vibration noise source file to the hard disk.
Preferably, the test system further comprises a filter, and the test method for influencing the performance of the hard disk by the vibration noise further comprises the step of filtering the adjusted second sound pressure level spectrum by the filter to filter out the sound pressure higher in at least one specific frequency band.
Preferably, the processor is further comprised of comparing the first audio level spectrum with the second audio level spectrum.
Preferably, the processor measures a linear relationship between a sound pressure of the loudspeaker and a gain of the loudspeaker.
The embodiment also provides a testing system for influencing the performance of the hard disk by vibration noise, which comprises a recording device, a loudspeaker, a processor, an equalizer, the hard disk and a reading rate tester. The recording device is used for recording vibration noise emitted by the server to generate an original sound source file. The loudspeaker is used for playing the original sound source file, wherein when the loudspeaker plays the original sound source file, the sound recording equipment records vibration noise emitted by the loudspeaker to generate the vibration noise source file. The processor is used for generating a first sound pressure level frequency spectrum according to the original sound source file and generating a second sound pressure level frequency spectrum according to the vibration noise source file. The equalizer is used for adjusting the second sound pressure level spectrum to be consistent with the first sound pressure level spectrum, wherein the processor generates an updated vibration noise source file according to the adjusted second sound pressure level spectrum. The reading rate tester is used for measuring the data reading rate of the hard disk when the loudspeaker plays and updates the vibration noise source file to the hard disk.
Preferably, the audio signal processing device further comprises a filter for filtering the adjusted second audio level spectrum to remove higher audio signals in at least one specific frequency band.
Preferably, the processor further comprises comparing the first audio level spectrum with the second audio level spectrum.
Preferably, the processor further comprises measuring a linear relationship between a sound pressure of the loudspeaker and a gain of the loudspeaker.
Drawings
Fig. 1A and 1B are schematic diagrams of a hard disk performance testing system according to an embodiment.
FIG. 2 is a flow chart of a method of operating the hard disk performance testing system of FIGS. 1A-1B.
Fig. 3A and 3B are schematic diagrams of a first audio level spectrum and a second audio level spectrum.
Fig. 4A and 4B are schematic diagrams of a hard disk performance testing system according to another embodiment.
FIG. 5 is a flowchart illustrating a method of operating the hard disk performance testing system of FIGS. 4A-4B.
Fig. 6 is another schematic diagram of a second audio level spectrum.
Fig. 7 is a schematic diagram of the linear relationship between the sound pressure and gain of the loudspeaker in fig. 1A-1B and fig. 4A-4B.
Symbol description:
100 hard disk efficiency test system
10 recording apparatus
20 Horn
30 computer
32 processor
34 equalizer
36, filter
40 hard disk
50 read Rate tester
200,400 method
S202-S220, S502-S522
Detailed Description
Fig. 1A and 1B are schematic diagrams of a hard disk performance testing system 100 according to an embodiment. The test system 100 is used to test the hard disk performance of the vibration noise effect. The test system 100 includes a recording device 10, a speaker 20, a computer 30, a hard disk 40, a read rate tester 50, a processor 32, and an equalizer 34. The processor 32 and the equalizer 34 may be independently operated devices or, in embodiments, the processor 32 and the equalizer 34 may be included within the computer 30.
The equalizer 34 may be a component comprising a plurality of resistive, inductive, and capacitive circuits. The sound signal is an analog signal, the electric waves generated by the sound signal are all alternating current, and different frequencies of the alternating current can generate different impedances (reactives) for different capacitances and inductances, so that the conduction quantity of each frequency is different, and the aim of equalizing the tones is fulfilled. In one embodiment, equalizer 34 may also be software for adjusting digital audio signals. Digital audio signals are typically analog audio signals generated via a fast fourier transform (Fast Fourier Transform). In addition, the hard disk 40 in the embodiment may be fixed in a rack to facilitate testing.
The embodiment of the invention aims to use the real vibration noise received by the hard disk in the server as a playback source, so that the actual situation of the influence of the vibration noise on the performance of the hard disk can be presented and evaluated. The detailed operation method is described below.
FIG. 2 is a flowchart illustrating a method 200 of operating the hard disk performance testing system 100 of FIGS. 1A-1B. The method of operation 200 comprises the steps of:
s202: the recording device 10 records the vibration noise emitted from the server to generate the original sound source file.
S204: the loudspeaker 20 plays the original sound source file.
S206: when the loudspeaker 20 plays the original sound source file, the recording device 10 records the vibration noise emitted by the loudspeaker 20 to generate the vibration noise source file.
S208: the processor 32 generates a first sound pressure level (Sound Pressure Level, SPL) spectrum from the original sound source file.
S210: the processor 32 generates a second sound pressure level spectrum based on the vibration noise source file.
S212: the processor 32 compares the first sound pressure level spectrum with the second sound pressure level spectrum.
S214: the equalizer 34 adjusts the second sound pressure level spectrum to correspond to the first sound pressure level spectrum. After equalizer 34 adjusts the second audio level spectrum, processor 32 may compare the first audio level spectrum to the second audio level spectrum. If the second tone level spectrum does not match the first tone level spectrum sufficiently, the equalizer 34 may be reused to adjust the second tone level spectrum. Thus, the audio source is played back and modified in an iterative manner so that the second audio level spectrum corresponds to the vibration noise actually perceived by the hard disk 40 at the server.
S216: the processor 32 generates an updated vibration noise source file based on the adjusted second sound pressure level spectrum.
S218: horn 20 plays the updated vibration noise source file to hard disk 40.
S220: when the loudspeaker 20 broadcasts an update vibration noise source file to the hard disk 40, the reading rate tester 50 measures the data reading rate of the hard disk 20.
Fig. 3A and 3B are schematic diagrams of a first audio level spectrum and a second audio level spectrum. The vertical axis in the figure is the sound pressure level (Sound Pressure Level) in the range of 15-85 dB. The horizontal axis is frequency, and the measurement range is usually 100-20000 Hz. Fig. 3A shows that the second sound level frequency of the vibration noise source is misaligned with the first sound level frequency of the original sound source. The equalizer 34 is used to adjust the sound pressure level of the second sound pressure level spectrum at each frequency, so that the second sound pressure level spectrum matches with the first sound pressure level spectrum as much as possible, as shown in fig. 3B. The processor 32 may generate an updated vibration noise source file based on the adjusted second sound pressure level spectrum. When the loudspeaker 20 plays the updated vibration noise source file to the hard disk 40, the reading rate tester 50 can measure the data reading rate of the hard disk 20, so that the vibration noise and the influence of the hard disk 40 on the server can be more accurately simulated.
Fig. 4A and 4B are schematic diagrams of a hard disk performance testing system 400 according to an embodiment of the invention. The hard disk performance test system 400 is different from the hard disk performance test system 100 of fig. 1A-1B in that the hard disk performance test system 400 may further include a filter 36. The filter 36 may be a stand-alone device or, in embodiments, the filter 36 may be included within the computer 30. The other elements are configured identically and are not described in detail herein.
Fig. 5 is a flowchart of a method 500 of operating the hard disk performance testing system 400 of fig. 4A-4B. The method of operation 500 comprises the steps of:
s502: the recording device 10 records the vibration noise emitted from the server to generate the original sound source file.
S504: the loudspeaker 20 plays the original sound source file.
S506: when the loudspeaker 20 plays the original sound source file, the recording device 10 records the vibration noise emitted by the loudspeaker 20 to generate the vibration noise source file.
S508: the processor 32 generates a first sound pressure level spectrum from the original sound source file.
S510: the processor 32 generates a second sound pressure level spectrum based on the vibration noise source file.
S512: the processor 32 compares the first sound pressure level spectrum with the second sound pressure level spectrum.
S514: the equalizer 34 adjusts the second sound pressure level spectrum to correspond to the first sound pressure level spectrum. After equalizer 34 adjusts the second audio level spectrum, processor 32 may compare the first audio level spectrum to the second audio level spectrum. If the second tone level spectrum does not match the first tone level spectrum sufficiently, the equalizer 34 may be reused to adjust the second tone level spectrum. In this way, the audio source is played back and modified in an iterative manner so that the second audio level spectrum corresponds to the vibration noise actually perceived by the hard disk 40 at the server.
S516: the filter 36 filters the adjusted second audio level spectrum to filter out higher audio pressures in at least one particular frequency band. The adjusted second audio level spectrum is filtered by the filter 36 to filter out the higher audio level in at least one specific frequency band, so that the performance influence of the higher audio level spectrum on the hard disk 40 can be measured.
S518: the processor 32 generates an updated vibration noise source profile based on the filtered second sound pressure level spectrum.
S520: horn 20 plays the updated vibration noise source file to hard disk 40.
S522: when the loudspeaker 20 broadcasts an update vibration noise source file to the hard disk 40, the reading rate tester 50 measures the data reading rate of the hard disk 20.
The filter 36 is an electronic component composed of a resistor, an inductor, and a capacitor. The filter 36 allows only certain frequencies to pass and blocks other frequencies of the audio source signal. In one embodiment, the filter 36 may also be software for filtering digital audio signals. Digital audio signals are typically analog audio signals generated via a fast fourier transform (Fast Fourier Transform).
Fig. 6 is another schematic diagram of a second audio level spectrum. The vertical axis of the figure shows the sound pressure level, and the vibration noise that the hard disk 40 is actually affected in the server is typically 50-90 dB. The horizontal axis is frequency, which ranges from 100 to 3000Hz. In the graph, peaks are all around 100-300 Hz, 800-1200 Hz, 1600-2100 Hz and 2800Hz, namely, higher sound pressure is obtained. After filtering out the peaks in these bands using the filter 36, the processor 32 may generate an updated vibration noise source profile based on the filtered second sound pressure level spectrum. When the loudspeaker 20 plays the updated vibration noise source file to the hard disk 40, the reading rate tester 50 can measure the data reading rate of the hard disk 20, so as to actually measure the influence of the higher sound pressure on the specific frequency on the performance of the hard disk 40.
TABLE 1
| Server | Vibration noise before filtering | Vibration noise after filtering | |
| Nidec fan | 47.6％ | 64.9％ | 69.5％ |
| AVC fan | 39.8％ | 72.2％ | 78.2％ |
Table 1 is an example of the read rate performance of hard disk 40 under different circumstances. The measured read rate of hard disk 40 was actually 47.6% of the original read rate (i.e., factory specification) in a server using a Nidec fan. The measured read rate of hard disk 40 in an environment where the horn simulates the Nidec fan noise was 64.9% of the original read rate. The hard disk 40 was tested to show a read rate of 69.5% of the original read rate in an environment where the horn simulated the Nidec fan noise and filtered out the higher sound pressure. The read rate of hard disk 40 is further reduced by other noise and interference in the server, which has more factors affecting the performance of hard disk 40. The AVC fan also presents the same situation, and embodiments are not described here in detail.
Fig. 7 is a schematic diagram showing the linear relationship between the sound pressure and gain of the speaker 40 in fig. 1A to 1B and fig. 4A to 4B. In the figure, the vertical axis represents the sound pressure of the horn 40, and the horizontal axis represents the gain of the horn 40. In the interval of-50 dB to-15 dB, the relation between the sound pressure and the gain of the loudspeaker 40 is linear, namely the gain is increased, and the sound pressure is also increased linearly. When the gain exceeds-10 dB, the horn 40 enters a saturated state, and even if the gain is increased, the sound pressure cannot be increased any more. If the gain exceeds 30dB, the load of the loudspeaker 40 is exceeded, so that the sound pressure becomes small and even no sound can be produced. By means of the linear relation between the sound pressure and the gain of the loudspeaker 40, the loudspeaker 40 which is applied to the test system for testing the hard disk performance by vibration noise can be found out to be the most suitable sound pressure and gain, and the accuracy of the test system is improved.
In this embodiment, the server may be used for Artificial Intelligence (AI) operation or edge computing (edge computing) operation, and may also be used as a 5G server, a cloud server or a car networking server.
In summary, the embodiments of the present invention provide a system and a method for testing the performance of a hard disk affected by vibration noise. The real sound pressure received by the hard disk in the server can be reproduced more accurately, and the influence of multiple frequency ranges is considered. The embodiment has a feedback correction mechanism, and can accurately adjust the sound pressure, so that the measurement of the hard disk efficiency is more accurate.
The foregoing description is only of the preferred embodiments of the present invention, and all equivalent changes and modifications made by the claims should be construed to fall within the scope of the present invention.
Claims (8)
1. The method for testing the performance of the hard disk by using vibration noise is characterized by comprising a recording device, an equalizer, a processor, a loudspeaker, a hard disk and a read rate tester, wherein the method for testing the performance of the hard disk by using vibration noise comprises the following steps of:
the recording equipment records vibration noise sent by a server to generate an original sound source file;
the loudspeaker plays the original sound source file;
when the loudspeaker plays the original sound source file, the sound recording equipment records vibration noise emitted by the loudspeaker to generate a vibration noise source file;
the processor generates a first sound pressure level spectrum according to the original sound source file;
the processor generates a second sound pressure level spectrum according to the vibration noise source file;
the equalizer adjusts the second tone level spectrum to correspond to the first tone level spectrum;
the processor generates an updated vibration noise source file according to the adjusted second sound pressure level frequency spectrum;
the loudspeaker plays the updated vibration noise source file to the hard disk; a kind of electronic device with high-pressure air-conditioning system
When the loudspeaker plays the updated vibration noise source file to the hard disk, the reading rate tester measures the data reading rate of the hard disk.
2. The method of claim 1, wherein the test system further comprises a filter, and the method further comprises the filter filtering the adjusted second audio level spectrum to remove higher audio in at least one specific frequency band.
3. The method of claim 1, further comprising comparing the first audio level spectrum with the second audio level spectrum.
4. The method of claim 1, further comprising the step of the processor measuring a linear relationship between a sound pressure of the speaker and a gain of the speaker.
5. A test system for influencing hard disk performance by vibration noise, comprising:
a hard disk;
the recording equipment is used for recording vibration noise sent by a server to generate an original sound source file;
the sound recording device is used for recording vibration noise emitted by the loudspeaker to generate a vibration noise source file when the loudspeaker plays the original sound source file;
a processor for generating a first sound pressure level spectrum according to the original sound source file and a second sound pressure level spectrum according to the vibration noise source file;
an equalizer for adjusting the second audio level spectrum to match the first audio level spectrum, wherein the processor generates an updated vibration noise source file according to the adjusted second audio level spectrum; a kind of electronic device with high-pressure air-conditioning system
And a reading rate tester for measuring the data reading rate of the hard disk when the loudspeaker broadcasts the updated vibration noise source file to the hard disk.
6. The system of claim 5, further comprising a filter for filtering the adjusted second audio level spectrum to filter out higher audio frequencies in at least one specific frequency band.
7. The system of claim 5, wherein the processor further comprises comparing the first audio level spectrum with the second audio level spectrum.
8. The system of claim 5, wherein the processor further comprises a linear relationship between a sound pressure of the speaker and a gain of the speaker.
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