WO2023045248A1

WO2023045248A1 - Detection apparatus for power supply voltage of hard disk

Info

Publication number: WO2023045248A1
Application number: PCT/CN2022/078184
Authority: WO
Inventors: 葛志华
Original assignee: 苏州浪潮智能科技有限公司
Priority date: 2021-09-22
Filing date: 2022-02-28
Publication date: 2023-03-30
Also published as: CN113568494A; CN113568494B

Abstract

The present application discloses a detection apparatus for the power supply voltage of a hard disk, comprising: a voltage dividing module connected to a target hard disk, used for dividing the power supply voltage of the target hard disk to obtain a target voltage; a PWM module provided in a target integrated chip, used for generating a target PWM signal; a filter module connected to the PWM module, used for filtering the target PWM signal to obtain a triangular filter signal; a differential comparison module provided in the target integrated chip, used for performing differential comparison on the target voltage and the triangular filter signal to obtain a differential comparison signal; and a data processing module provided in the target integrated chip, used for determining target power supply data of the target hard disk according to the differential comparison signal and the duty cycle of the target PWM signal, and detecting, according to the target power supply data, whether the power supply voltage of the target hard disk is abnormal. By means of the detection apparatus, manufacturing costs required in the process of detecting the power supply voltage of the hard disk can be significantly reduced.

Description

A detection device for hard disk power supply voltage

This application claims the priority of the Chinese patent application with the application number 202111103941.4 and the title of the invention "a device for detecting power supply voltage of a hard disk" submitted to the China Patent Office on September 22, 2021, the entire contents of which are incorporated by reference in this application middle.

technical field

The present application relates to the technical field of servers, in particular to a detection device for a hard disk power supply voltage.

Background technique

The hard disk is usually powered by the hard disk backplane, and the power supply of the hard disk backplane to the hard disk directly affects the running status of the hard disk. If the power supply voltage of the hard disk fluctuates beyond the preset range, it will cause a system failure.

In the prior art, in order to detect the power supply of the hard disk backplane to the hard disk, a general E-fuse is usually added to the front of the power connector of the hard disk backplane, and then, through the BMC (Baseboard Management Controller, baseboard management controller) To read the voltage of the E-fuse to determine the power supply voltage provided by the backplane for the hard disk. Since this method can only detect the total power supply voltage of the backplane to the hard disk, it cannot detect the power supply voltage of the backplane to each hard disk. In this way, when the current of a certain hard disk on the hard disk backplane increases instantaneously and the hard disk fails, since the current threshold of the total E-fuse will be much greater than the operating current of each hard disk, no obvious noise will be generated on the total E-fuse. Voltage fluctuations will cause problems such as hard disk failures that cannot be located and causes of failures that cannot be resolved. If you want to detect the power supply voltage of each hard disk on the backplane, you need to install an E-fuse on each hard disk connector, which will greatly increase the hardware cost. At present, there is no relatively effective solution to the above-mentioned technical problems.

Contents of the invention

In view of this, the purpose of the present application is to provide a detection device for the power supply voltage of the hard disk, so as to reduce the manufacturing cost required in the detection process of the power supply voltage of the hard disk. The specific plan is as follows:

A detection device for a hard disk supply voltage, comprising:

A voltage dividing module connected to the target hard disk, configured to divide the power supply voltage of the target hard disk to obtain a target voltage;

The PWM module arranged in the target integrated chip is used to generate the target PWM signal;

A filter module connected to the PWM module, configured to filter the target PWM signal to obtain a triangular filter signal;

A differential comparison module disposed in the target integrated chip, configured to perform a differential comparison between the target voltage and the triangular filter signal to obtain a differential comparison signal;

A data processing module disposed in the target integrated chip, configured to determine the target power supply data of the target hard disk according to the duty cycle of the differential comparison signal and the target PWM signal, and detect the target power supply data according to the target power supply data. Check whether the power supply voltage of the target hard disk is abnormal.

Optionally, also include:

The BMC connected to the data processing module is configured to obtain abnormal power supply data in the target power supply data, and provide a corresponding fault analysis report according to the abnormal power supply data.

Optionally, also include:

The display connected to the BMC is used to display the abnormal power supply data, and generate an abnormal graph from the abnormal power supply data.

Optionally, also include:

The memory provided in the BMC is used for storing the abnormal power supply data.

Optionally, also include:

The alarm set in the BMC is used for prompting early warning information when the BMC acquires the abnormal power supply data.

Optionally, the duty cycle of the target PWM signal changes linearly and periodically from 0-100%-0.

Optionally, the target voltage and the triangular filter signal can be flexibly swapped at the input terminal of the differential comparison module.

Optionally, the filtering module is specifically a low-pass filter.

Optionally, the bandpass of the low-pass filter is smaller than the frequency of the target PWM signal.

Optionally, the target integrated chip is specifically a CPLD.

Optionally, when the level of the differential comparison signal is reversed, there is a target mapping relationship between the duty cycle of the target PWM signal and the power supply voltage of the target hard disk;

Wherein, the expression of the target mapping relationship is:

V_HDD=V_oh×D_dat×R_d

In the formula, V_HDD is the power supply voltage of the target hard disk, V_oh is the value corresponding to the high level output signal of the pin of the target integrated chip, D_dat is the duty cycle of the target PWM signal, and R_d is the divided voltage The attenuation ratio of the module.

Optionally, the target integrated chip is set in a backplane for supplying power to the target hard disk.

It can be seen that in this application, the detection device for detecting the hard disk power supply voltage is composed of a voltage divider module, a filter module, and a differential comparison module, a PWM module, and a data processing module in the existing target integrated chip of the backplane. When using the detecting device to detect the power supply voltage of the target hard disk, firstly, the voltage dividing module is used to divide the power supply voltage of the target hard disk to obtain the target voltage. At the same time, the PWM module is used to generate the target PWM signal, and the filter module is used to filter the target PWM signal to obtain a triangular filter signal. After that, the differential comparison module is used to perform differential comparison between the target voltage and the triangular filter signal to obtain a differential comparison signal. Finally, The data processing module determines the target power supply data of the target hard disk according to the duty cycle of the differential comparison signal and the target PWM signal, and detects whether the power supply voltage of the target hard disk is abnormal according to the target power supply data. Apparently, compared with the prior art, in the detection device provided by this application, because the differential comparison module of the existing target integrated chip in the backplane is used to detect the power supply voltage of the target hard disk, here Under certain circumstances, as long as some simple voltage divider modules and filter modules are added in conjunction with the target integrated chip, the purpose of detecting the power supply voltage of the target hard disk can be achieved, thereby significantly reducing the required time for detecting the power supply voltage of the hard disk. Construction cost.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present application, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

FIG. 1 is a structural diagram of a detection device for a hard disk supply voltage provided by an embodiment of the present application;

FIG. 2 is a structural diagram of another detection device for a hard disk supply voltage provided by an embodiment of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

Please refer to FIG. 1. FIG. 1 is a structural diagram of a detection device for a hard disk supply voltage provided in an embodiment of the present application. The detection device includes:

A voltage divider module 11 connected to the target hard disk is used to divide the power supply voltage of the target hard disk to obtain the target voltage;

The PWM module 12 arranged in the target integrated chip is used to generate the target PWM signal;

The filter module 13 connected with the PWM module 12 is used to filter the target PWM signal to obtain a triangular filter signal;

The differential comparison module 14 arranged in the target integrated chip is used for differential comparison of the target voltage and the triangular filter signal to obtain a differential comparison signal;

The data processing module 15 arranged in the target integrated chip is used to determine the target power supply data of the target hard disk according to the duty cycle of the differential comparison signal and the target PWM signal, and detect whether the power supply voltage of the target hard disk is abnormal according to the target power supply data.

In this embodiment, a detection device for the power supply voltage of the hard disk is provided, through which the manufacturing cost required in the detection process of the power supply voltage of the hard disk can be significantly reduced. In this detection device, the detection device for detecting the power supply voltage of the hard disk is composed of a voltage divider module 11, a filter module 13, and a differential comparison module 14, a PWM module 12, and a data processing module 15 in the existing target integrated chip of the backplane. .

Wherein, the target integrated chip can be CPLD (Complex Programmable Logic Device, complex programmable logic device), FPGA (Field Programmable Gate Array, field programmable logic gate array) in the backplane or other types of programmable logic devices.

When the power supply voltage of the target hard disk needs to be detected, firstly, the voltage divider module 11 is used to divide the power supply voltage V_HDD of the target hard disk to obtain the target voltage V_HDD1, and at the same time, the PWM module 12 arranged in the target integrated chip is used to generate the target PWM signal PWM_lin, and use the filter module 13 to filter the target PWM signal PWM_lin to obtain the triangular filter signal Tri_wave; after that, use the differential comparison module 14 in the target integrated chip to perform differential comparison on the target voltage V_HDD1 and the triangular filter signal Tri_wave to obtain a differential comparison signal Trigger_o. After the differential comparison module 14 obtains the differential comparison signal Trigger_o, the data processing module 15 arranged in the target integrated chip will determine the target power supply data of the target hard disk according to the differential comparison signal Trigger_o and the duty cycle D_dat of the target PWM signal PWM_lin, and will According to the target power supply data, it is detected whether the power supply voltage of the target hard disk is abnormal.

It is conceivable that if the power supply voltage V_HDD of the target hard disk is always in a stable state, then the differential comparison signal Trigger_o obtained by differentially comparing the target voltage V_HDD1 after dividing the power supply voltage V_HDD of the target hard disk with the triangular filter signal Tri_wave will appear If the differential comparison signal Trigger_o output by the differential comparison module shows irregular changes, it indicates that the power supply voltage of the target hard disk is abnormal.

Moreover, according to the working principle of differential comparison between the target voltage V_HDD1 and the triangular filter signal Tri_wave by the differential comparison module 14, it can be known that the differential comparison signal Trigger_o output by the differential comparison module 14 will be linear with the duty ratio D_dat of the target PWM signal PWM_lin Therefore, the target power supply data of the target hard disk can be determined through the change law of the differential comparison signal Trigger_o and the duty cycle D_dat of the target PWM signal PWM_lin, and whether the target hard disk is abnormal can be detected according to the target power supply data.

Compared with the prior art that needs to install an E-fuse on the hard disk connector to detect the power supply voltage of the target hard disk, in the detection device provided in this embodiment, because the existing target integration in the backplane is used The differential comparison module 14 of the chip is used to detect the power supply voltage of the target hard disk. In this case, as long as some simple voltage divider modules 11 and filter modules 13 are added in conjunction with the target integrated chip, the purpose of detecting the power supply voltage of the target hard disk can be achieved, thereby significantly reducing the detection process of the hard disk power supply voltage. The required cost of construction.

It can be seen that in this embodiment, the detection device for detecting the hard disk power supply voltage is composed of the voltage divider module, the filter module, and the differential comparison module, PWM module and data processing module in the existing target integrated chip on the backplane. When the detecting device is used to detect the power supply voltage of the target hard disk, firstly, the voltage dividing module is used to divide the power supply voltage of the target hard disk to obtain the target voltage. At the same time, the PWM module is used to generate the target PWM signal, and the filter module is used to filter the target PWM signal to obtain a triangular filter signal. After that, the differential comparison module is used to perform differential comparison between the target voltage and the triangular filter signal to obtain a differential comparison signal. Finally, The data processing module determines the target power supply data of the target hard disk according to the duty cycle of the differential comparison signal and the target PWM signal, and detects whether the power supply voltage of the target hard disk is abnormal according to the target power supply data. Apparently, compared with the prior art, in the detection device provided in this embodiment, because the differential comparison module of the existing target integrated chip in the backplane is used to detect the power supply voltage of the target hard disk, the In this case, as long as some simple voltage divider modules and filter modules are added in conjunction with the target integrated chip, the purpose of detecting the power supply voltage of the target hard disk can be achieved, thereby significantly reducing the required cost of construction.

Based on the above embodiments, this embodiment further explains and optimizes the technical solution. Please refer to FIG. 2 , which is a structural diagram of another detection device for a hard disk supply voltage provided by an embodiment of the present application. As an optional implementation manner, the above detection device also includes:

The BMC16 connected with the data processing module is used to obtain abnormal power supply data in the target power supply data, and provide a corresponding fault analysis report according to the abnormal power supply data.

In this embodiment, when the power supply voltage of the target hard disk is abnormal, in order to enable the staff to know the reason of the abnormal power supply of the target hard disk in time. In the detection device, the data processing module is also connected to the BMC16, and the BMC16 is used to obtain abnormal power supply data in the target power supply data. When the BMC 16 obtains the abnormal power supply data corresponding to the target hard disk, it will provide a corresponding failure analysis report according to the abnormal power supply data of the target hard disk.

When the fault analysis report corresponding to the abnormal power supply data of the target hard disk is obtained, the staff can detect and repair the abnormal fault state of the target hard disk according to the fault analysis report provided by BMC16, which not only ensures the maintainability of the target hard disk Moreover, it can also improve the efficiency of the staff when repairing the target hard disk.

As an optional implementation manner, the above detection device also includes:

A display connected to the BMC is used to display abnormal power supply data and generate an abnormal graph of the abnormal power supply data.

In order to enable the staff to view the abnormal power supply data of the target hard disk more clearly and intuitively, a display is also set in the detection device, so as to use the display to display the abnormal power supply data of the target hard disk, and display the abnormal power supply data of the target hard disk Generate exception graphs.

It is understandable that when the abnormal power supply data of the target hard disk is generated into an abnormal graph, the staff can view the power supply data of the target hard disk at various time points more intuitively from the display. The abnormal fault of the target hard disk can be located and repaired in time, thereby further improving the maintenance experience of the staff.

As an optional implementation manner, the above detection device also includes:

The memory set in the BMC is used to store abnormal power supply data.

It can be understood that the abnormal power supply data of the target hard disk not only contains the power supply information of the target hard disk, but also includes information such as the cause of the abnormal power supply of the target hard disk, the time of abnormal power supply, and the type of abnormal power supply. Therefore, when the abnormal power supply data of the target hard disk is stored in the memory, the staff can not only analyze the current power supply status of the target hard disk according to the abnormal power supply data stored in the memory, but also evaluate the abnormal power supply data of the target hard disk. Display the health status and loss degree of the power supply of the target hard disk. Thus, the user experience of people when using the detection device can be further improved.

As an optional implementation manner, the above detection device also includes:

The alarm set in the BMC is used to prompt the warning information when the BMC obtains abnormal power supply data.

In this embodiment, an alarm device for prompting early warning information is also provided in the detection device when the BMC acquires abnormal power supply data of the target hard disk. It is conceivable that when the power supply status of the target hard disk is abnormal, the staff can be informed of the abnormal power supply status of the target hard disk in time through the alarm prompt to the staff, and take corresponding remedial measures in time. This can relatively reduce people's economic loss.

Based on the above embodiments, this embodiment further explains and optimizes the technical solution. As an optional implementation mode, the duty ratio of the target PWM signal changes linearly and periodically from 0-100%-0.

In order to enable the differential comparison module to obtain a differential comparison signal with neater data and more accurate results, the duty cycle of the target PWM signal generated by the PWM module is controlled to change linearly and periodically from 0 to 100% to 0.

It can be understood that when the duty cycle of the target PWM signal changes linearly and periodically from 0 to 100% to 0, the duty cycle of the triangular filter signal output by the filtering module will also change according to a certain rule. In this case, when the differential comparison module compares the triangular filter signal with the target voltage, the output differential comparison signal will be more regular and orderly, which not only facilitates the calculation of the differential comparison signal by the data processing module Moreover, the accuracy and reliability of the data processing results can also be guaranteed.

Based on the above embodiments, this embodiment further explains and optimizes the technical solution. As an optional implementation, the target voltage and the triangular filter signal can be flexibly exchanged at the input end of the differential comparison module.

In this embodiment, because the differential comparison module has no polarity requirement for the signal at the input end, the target voltage output by the voltage divider module and the triangular filter signal output by the filter module can be respectively input to the positive phase input of the differential comparison module The target voltage output by the voltage divider module and the triangular filter signal output by the filter module can also be input to the negative phase input terminal and the positive phase input terminal of the differential comparison module respectively.

Apparently, through the technical solution provided by this embodiment, the error probability of the staff when operating the detection device can be relatively reduced.

Based on the above embodiments, this embodiment further explains and optimizes the technical solution. As an optional implementation manner, the filtering module is specifically a low-pass filter.

It can be understood that, because the frequency of the target PWM signal output by the PWM module is relatively lower, in order to enable the filtering module to better separate the useful signal and the noise signal in the target PWM signal and achieve a good filtering effect, In this embodiment, the filtering module is set as a low-pass filter.

As an optional implementation manner, the bandpass of the low-pass filter is smaller than the frequency of the target PWM signal.

In practical applications, in order to enable the filter module to separate the useful signal and the noise signal in the target PWM signal more accurately, the bandpass of the low-pass filter is set to a value smaller than the frequency of the target PWM signal. That is, if the signal input to the filter module is less than the frequency of the target PWM signal, the signal can pass through the filter module, and if the signal input to the filter module is greater than or equal to the frequency of the target PWM signal, the signal cannot pass through the low-pass filter . In this way, the purpose of accurately filtering the target PWM signal can be achieved.

Based on the above-mentioned embodiments, this embodiment further explains and optimizes the technical solution. As an optional implementation manner, the above-mentioned target integrated chip is specifically a CPLD.

Specifically, in practical applications, the target integrated chip can be set as CPLD, because CPLD not only has abundant logic and memory resources, but also has a large number of input and output interfaces, and can be reprogrammed after the system is installed. Therefore, when the target integrated chip is set as a CPLD, it can further improve the usability of people when using the detection device.

Based on the above embodiment, this embodiment further explains and optimizes the technical solution. As an optional implementation mode, when the level of the differential comparison signal is reversed, the duty cycle of the target PWM signal and the power supply of the target hard disk There is a target mapping relationship for voltage;

Among them, the expression of the target mapping relationship is:

V_HDD=V_oh×D_dat×R_d

In the formula, V_HDD is the power supply voltage of the target hard disk, V_oh is the value corresponding to the high level of the pin output signal of the target integrated chip, D_dat is the duty cycle of the target PWM signal, and R_d is the attenuation ratio of the voltage divider module.

In this embodiment, after the target PWM signal PWM_lin is filtered by the filtering module 13 , the magnitude of the obtained triangular filter signal Tri_wave corresponds to the duty ratio D_dat of the target PWM signal PWM_lin one-to-one. Wherein, the maximum value of the triangular filter signal Tri_wave corresponds to the waveform of the target PWM signal PWM_lin when the duty cycle is 100%, and the maximum value of the triangular filter signal Tri_wave corresponds to the high level V_oh of the pin output signal of the target integrated chip, The high level V_oh is determined by the operating voltage of the target integrated chip and is a fixed value.

During the differential comparison between the target voltage V_HDD1 and the triangular filtered signal Tri_wave by the differential comparison module 14 , when the value of the triangular filtered signal Tri_wave is equal to the target voltage V_HDD1 , the differential comparison signal Trigger_o output by the differential comparison module 14 will be reversed. That is, when the differential comparison signal Trigger_o output by the differential comparison module 14 is reversed, the duty ratio D_dat of the target PWM signal PWM_lin corresponds to the power supply voltage V_HDD of the target hard disk one-to-one. At this time, V_HDD=V_oh×D_dat×R_d. Wherein, R_d is the attenuation ratio of the voltage divider module 11 , which is determined by the circuit parameters of the filter module 13 , R_d=V_HDD/V_HDD1 .

The data processing module 15 samples the duty cycle D_dat of the target PWM signal PWM_lin at the edge of the differential comparison signal Trigger_o, and calculates the target power supply data of the target hard disk. Specifically, when the data processing module detects that the power supply voltage of the target hard disk is abnormal, the data processing module will actively latch the abnormal power supply data of the target hard disk and the power supply data before and after the abnormal power supply data.

Obviously, through the technical solution provided by this embodiment, the detection result of the power supply data of the target hard disk can be made more accurate and reliable.

Correspondingly, the embodiment of the present application also discloses a server, including a detection device for a hard disk power supply voltage as disclosed above.

The server provided by the embodiment of the present application has the beneficial effects of the detection device for the power supply voltage of the hard disk disclosed above.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same or similar parts of each embodiment can be referred to each other. Finally, it should also be noted that in this text, relational terms such as first and second etc. are only used to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above is a detailed introduction of a hard disk power supply voltage detection device provided by this application. In this paper, specific examples are used to illustrate the principle and implementation of this application. The description of the above embodiments is only used to help understand the application. method and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of this application, there will be changes in the specific implementation and application scope. Application Restrictions.

Claims

A detection device for a hard disk supply voltage, characterized in that it comprises:

A voltage dividing module connected to the target hard disk, configured to divide the power supply voltage of the target hard disk to obtain a target voltage;

The PWM module arranged in the target integrated chip is used to generate the target PWM signal;

A filter module connected to the PWM module, configured to filter the target PWM signal to obtain a triangular filter signal;

A differential comparison module disposed in the target integrated chip, configured to perform a differential comparison between the target voltage and the triangular filter signal to obtain a differential comparison signal;

A data processing module disposed in the target integrated chip, configured to determine the target power supply data of the target hard disk according to the duty cycle of the differential comparison signal and the target PWM signal, and detect the target power supply data according to the target power supply data. Check whether the power supply voltage of the target hard disk is abnormal.
The detection device according to claim 1, further comprising:

The BMC connected to the data processing module is configured to obtain abnormal power supply data in the target power supply data, and provide a corresponding fault analysis report according to the abnormal power supply data.
The detection device according to claim 2, further comprising:

The display connected to the BMC is used to display the abnormal power supply data, and generate an abnormal graph from the abnormal power supply data.
The detection device according to claim 2, further comprising:

The memory provided in the BMC is used for storing the abnormal power supply data.
The detection device according to claim 2, further comprising:

The alarm set in the BMC is used for prompting early warning information when the BMC acquires the abnormal power supply data.
The detection device according to claim 1, characterized in that the duty cycle of the target PWM signal changes linearly or periodically from 0-100%-0.
The detection device according to claim 1, wherein the target voltage and the triangular filter signal can be flexibly exchanged at the input end of the differential comparison module.
The detection device according to claim 1, wherein the filtering module is specifically a low-pass filter.
The detection device according to claim 8, characterized in that the bandpass of the low-pass filter is smaller than the frequency of the target PWM signal.
The detection device according to claim 1, wherein the target integrated chip is specifically a CPLD.
The detection device according to any one of claims 1 to 10, wherein when the level of the differential comparison signal is reversed, the duty ratio of the target PWM signal and the power supply voltage of the target hard disk exist. Target mapping relationship;

Wherein, the expression of the target mapping relationship is:

V_HDD=V_oh×D_dat×R_d

In the formula, V_HDD is the power supply voltage of the target hard disk, V_oh is the value corresponding to the high level output signal of the pin of the target integrated chip, D_dat is the duty cycle of the target PWM signal, and R_d is the divided voltage The attenuation ratio of the module.
The detection device according to any one of claims 1 to 10, wherein the target integrated chip is arranged in a backplane for supplying power to the target hard disk.