A multi-modal vibration perception method for liquid-cooled data centers

Abstract

The application discloses a kind of multimodal vibration perception methods for liquid-cooled data center, it is related to vibration monitoring technical field, including, the structural vibration signal of liquid-cooled data center computer room is collected, and continuous time series record and unified time mark processing are carried out, form structural vibration reference information;Based on structural liquid time series difference sequence and cabinet liquid time series difference sequence, the propagation direction of vibration in structure, liquid and cabinet is reversed and distinguished, and vibration propagation path characteristic sequence is formed;According to vibration propagation path characteristic sequence, identify vibration dominant source and vibration propagation path state, generate multimodal vibration perception report.The multi-source vibration information obtained by the intelligent sensor is organized under the unified time reference, so that the propagation order between structural vibration, liquid vibration and cabinet vibration has a clear time relationship, providing a reliable time sequence basis for vibration propagation path identification.

Description

Technical Field

[0001] This invention relates to the field of vibration monitoring technology, and in particular to a multimodal vibration sensing method for liquid-cooled data centers. Background Technology

[0002] With the rapid development of liquid-cooled data center technology, high-power server equipment is increasingly adopting liquid cooling to improve heat dissipation efficiency and operational stability. During the operation of a liquid-cooled data center, there are complex coupling relationships between structural vibration, coolant flow vibration, and rack equipment vibration. In recent years, vibration sensing technology based on intelligent sensors has been increasingly applied to data center operation monitoring. By deploying intelligent sensors in key locations of the data center structure, liquid cooling pipelines, and rack equipment, vibration signals are continuously collected and recorded over time, enabling dynamic monitoring of the data center's operational status and providing data support for stable data center operation.

[0003] However, existing vibration monitoring technologies based on smart sensors mostly focus on monitoring vibration signals at a single location and in a single medium. They lack a unified temporal correlation mechanism for the propagation relationship between structural vibration, coolant inertial vibration, and equipment operating vibration. This makes it difficult to accurately identify the propagation sequence and dominant source of vibration among the structure, liquid, and equipment, resulting in limited vibration source identification capabilities and difficulty in accurately identifying the complex vibration propagation paths of liquid-cooled data centers. Summary of the Invention

[0004] In view of the aforementioned existing problems, the present invention is proposed.

[0005] Therefore, this invention provides a multimodal vibration sensing method for liquid-cooled data centers to solve the problem of accurately identifying the propagation relationship between structural vibration, liquid vibration and equipment vibration in liquid-cooled data centers.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] This invention provides a multimodal vibration sensing method for liquid-cooled data centers, comprising: acquiring structural vibration signals of a liquid-cooled data center room, performing continuous time-series recording and unified time-identification processing to form structural vibration reference information; establishing a structural vibration reference interval model based on the structural vibration reference information, and using the structural vibration reference interval model to identify the structural vibration start time; using the structural vibration start time as a reference, acquiring inertial response vibration signals of the coolant using vibration sensors to form a liquid inertial response sequence, and acquiring operational vibration signals of the liquid-cooled cabinet under the same time reference to form cabinet operational vibration response information; calculating the time difference between the structure and the liquid based on the structural vibration reference information and the liquid inertial response sequence to form a structural-liquid time difference sequence, and calculating the time difference between the liquid-cooled cabinet and the liquid based on the cabinet operational vibration response information to form a cabinet liquid time difference sequence; performing inverse discrimination on the propagation direction of vibration in the structure, liquid, and cabinet based on the structural-liquid time difference sequence and the cabinet liquid time difference sequence to form a vibration propagation path feature sequence; and identifying the dominant source of vibration and the vibration propagation path state based on the vibration propagation path feature sequence, and generating a multimodal vibration sensing report.

[0008] As a preferred embodiment of the multimodal vibration sensing method for liquid-cooled data centers described in this invention, the steps for forming structural vibration reference information are as follows:

[0009] Vibration sensors were installed on the floor slab and foundation of the liquid-cooled data center server room to collect vibration signals of the server room structure and continuously sample and record them to form raw vibration time series data.

[0010] The original vibration time series data is time-marked according to a unified time reference, and a one-to-one correspondence between vibration data and sampling time is established to form structural vibration time-marked data.

[0011] The structural vibration time signature data is integrated with the original vibration time series data to form structural vibration reference information.

[0012] As a preferred embodiment of the multimodal vibration sensing method for liquid-cooled data centers described in this invention, the steps for establishing the structural vibration reference interval model are as follows:

[0013] According to the preset time window, the structural vibration reference information is continuously segmented and processed, and the vibration response value within each time window is calculated to form window vibration sample data;

[0014] By comparing and identifying the changes in vibration response between adjacent time windows in the vibration sample data, characteristic data of vibration state changes are formed.

[0015] Based on the characteristic data of vibration state change, the vibration response value is screened by time decay to determine the upper and lower limits of the vibration response and establish a structural vibration reference interval model.

[0016] As a preferred embodiment of the multimodal vibration sensing method for liquid-cooled data centers described in this invention, the step of identifying the structural vibration start time using a structural vibration reference interval model includes the following steps:

[0017] Input the vibration response value from the structural vibration reference information into the structural vibration reference interval model, determine whether the vibration response value is within the upper and lower bounds of the vibration response, and form vibration interval discrimination data.

[0018] Based on the chronological order, identify the time window position in the vibration interval discrimination data where the vibration response value continuously deviates from the structural vibration reference interval model, and form vibration state change discrimination information;

[0019] Based on the vibration state change discrimination information, the time marker corresponding to the first sustained deviation of the vibration response value from the structural vibration reference interval model is determined as the structural vibration start time.

[0020] As a preferred embodiment of the multimodal vibration sensing method for liquid-cooled data centers described in this invention, the steps for forming the liquid inertial response sequence are as follows:

[0021] Using the structural vibration initiation time as the time reference, vibration sensors were installed in the inlet and return sections of the coolant circulation pipeline of the liquid-cooled cabinet, and vibration signals of the outer wall of the pipeline were collected to form pipeline vibration sampling data.

[0022] According to a unified time identifier, the inlet section vibration signal and the return section vibration signal in the pipeline vibration sampling data are time aligned and common mode canceled to form the coolant inertial response vibration signal.

[0023] The coolant inertial response vibration signals are organized chronologically to generate a liquid inertial response sequence.

[0024] As a preferred embodiment of the multimodal vibration sensing method for liquid-cooled data centers described in this invention, the steps for generating rack operation vibration response information are as follows:

[0025] Under the same time reference, vibration signals of the cabinet are collected by vibration sensors deployed on the liquid-cooled cabinet to form cabinet vibration sampling data;

[0026] The cabinet vibration sampling data is time-aligned with the liquid inertial response sequence according to a unified time identifier to form cabinet liquid-aligned vibration data;

[0027] Based on the cabinet liquid alignment vibration data, the cabinet vibration signals that change synchronously with the liquid inertial response sequence under the same time mark are filtered according to the time mark order to form the cabinet operation vibration response information.

[0028] As a preferred embodiment of the multimodal vibration sensing method for liquid-cooled data centers described in this invention, the steps for forming the structural liquid time difference sequence are as follows:

[0029] The structural vibration reference information and the liquid inertial response sequence are mapped to time windows according to a unified time identifier to form structural liquid time window vibration data;

[0030] Based on structural fluid time window vibration data, the time markers of structural vibration response change and fluid inertial response change are identified, and the time difference between the fluid response change time marker and the structural vibration change time marker is determined to form structural fluid time difference data.

[0031] The structural liquid time difference data are organized continuously according to the time identifier order to form a structural liquid time difference sequence.

[0032] As a preferred embodiment of the multimodal vibration sensing method for liquid-cooled data centers described in this invention, the step of forming the cabinet liquid time difference sequence includes the following steps:

[0033] According to the preset time window, the liquid inertial response sequence is divided into corresponding segments with the cabinet operation vibration response information to obtain the equipment liquid corresponding vibration data;

[0034] In the vibration data corresponding to the equipment liquid, the time of change of liquid inertial response and the time of change of cabinet operation vibration response are identified in the order of time markers, and the time difference between the time of change of cabinet operation vibration response and the time of change of liquid inertial response is determined to obtain equipment liquid time difference data.

[0035] The equipment liquid time difference data corresponding to each time window are arranged continuously according to the time identifier order to obtain the cabinet liquid time difference sequence.

[0036] As a preferred embodiment of the multimodal vibration sensing method for liquid-cooled data centers described in this invention, the step of forming a vibration propagation path feature sequence is as follows:

[0037] The time difference sequence of structural liquid and the time difference sequence of cabinet liquid are processed according to a unified time identifier to form time difference data corresponding to structural liquid equipment.

[0038] Based on the time difference data corresponding to the structure-liquid equipment, the sequential relationship between the changes in the time difference of the structure-liquid and the changes in the time difference of the equipment liquid is identified within each time window, and the propagation direction of vibration between the structure, liquid and equipment is determined to form propagation direction discrimination data;

[0039] The propagation direction discrimination data are arranged in chronological order, and the correspondence between time markers and propagation directions is established to form a vibration propagation path characteristic sequence.

[0040] As a preferred embodiment of the multimodal vibration sensing method for liquid-cooled data centers described in this invention, the steps for generating the multimodal vibration sensing report are as follows:

[0041] According to the unified time identifier, the starting position of vibration propagation between structure, liquid and equipment in the characteristic sequence of vibration propagation path is identified, and the dominant source of vibration is determined to form vibration source discrimination data;

[0042] Based on the vibration source identification data and vibration propagation path characteristic sequence, the propagation sources and propagation paths at each time location are organized in chronological order to generate a multimodal vibration sensing report.

[0043] The beneficial effects of this invention are as follows: By deploying intelligent sensors at key locations in the liquid-cooled data center server room to collect structural vibration signals, and establishing a structural vibration reference interval model based on the structural vibration reference information, a stable vibration response reference range is formed for the structural vibration state of the server room. On this basis, the structural vibration reference interval model is used to identify the start time of structural vibration, so that structural vibration changes can be accurately identified during the deviation of the vibration response interval. This establishes a unified time reference for the collection of coolant inertial response vibration signals and rack operation vibration signals. The multi-source vibration information obtained by the intelligent sensors is organized under a unified time reference, so that the propagation sequence between structural vibration, liquid vibration and equipment vibration has a clear temporal relationship, providing a reliable temporal basis for vibration propagation path identification. Attached Figure Description

[0044] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a flowchart of a multimodal vibration sensing method for liquid-cooled data centers.

[0046] Figure 2 A flowchart for obtaining the onset time of structural vibration.

[0047] Figure 3 A flowchart for generating vibration response information of the cabinet during operation.

[0048] Figure 4 A flowchart for generating a multimodal vibration sensing report. Detailed Implementation

[0049] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0050] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0051] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0052] Reference Figures 1-4 As one embodiment of the present invention, this embodiment provides a multimodal vibration sensing method for liquid-cooled data centers, comprising the following steps:

[0053] S1. Collect structural vibration signals of the liquid-cooled data center computer room, and perform continuous time-series recording and unified time identification processing to form structural vibration reference information.

[0054] S1.1: Vibration sensors are installed on the floor slab and foundation of the liquid-cooled data center server room to collect vibration signals of the server room structure and continuously sample and record them to form raw vibration time series data.

[0055] Specifically, vibration sensors are deployed at the locations of the liquid-cooled data center floor slab and the foundations of the liquid-cooled server racks. These sensors are then fixed to the surfaces of the floor slab and the foundations, enabling them to detect the vibration acceleration amplitude of the floor slab and the foundations over time, thus generating vibration signals for the data center structure. These vibration sensors continuously collect these vibration signals and record them sequentially over time, ensuring a continuous arrangement of the vibration signals and forming raw vibration time-series data.

[0056] S1.2: The original vibration time series data is processed with time stamp according to a unified time reference to establish a one-to-one correspondence between vibration data and sampling time, forming structural vibration time stamp data;

[0057] Specifically, the vibration signals of the computer room structure in the original vibration time series data are time-marked according to a unified time reference. While recording the vibration signals of the computer room structure, the corresponding sampling time is marked for each vibration signal, so that each vibration signal in the original vibration time series data corresponds to a unique sampling time. The vibration signals of the computer room structure and their corresponding sampling times are arranged in chronological order to form a one-to-one correspondence between the vibration signals and the sampling times, thus forming structural vibration time-marked data.

[0058] S1.3: Integrate the structural vibration time signature data with the original vibration time sequence data to form structural vibration reference information.

[0059] Specifically, the sampling time in the structural vibration time signature data and the vibration signal of the computer room structure in the original vibration time series data are recorded in a unified manner, so that the sampling time and the corresponding vibration signal of the computer room structure are kept in the same record. The vibration signals of the computer room structure with sampling time signature are arranged continuously in chronological order, so that the vibration signals of the computer room structure form a complete record in the time dimension, forming structural vibration reference information.

[0060] S2. Based on the structural vibration reference information, establish a structural vibration reference interval model, and use the structural vibration reference interval model to identify the structural vibration start time.

[0061] S2.1: According to the preset time window, the structural vibration reference information is continuously segmented and processed, and the vibration response value within each time window is calculated to form window vibration sample data;

[0062] Specifically, the vibration signals of the computer room structure in the structural vibration reference information are recorded in segments according to the time sequence of the preset time windows, so that each preset time window corresponds to a segment of the computer room structure vibration signal, forming vibration data segments divided by time range, and the vibration response value within each time window is calculated, so that each preset time window corresponds to a vibration response value; the vibration response value corresponding to each preset time window is recorded uniformly with the corresponding preset time window to form window vibration sample data.

[0063] It should be noted that the time window is set based on the sampling time interval of the vibration signal of the computer room structure and the change period of the vibration signal of the computer room structure in the time dimension. The continuous time range is selected as the time window according to the sampling time sequence of the vibration signal of the computer room structure, so that each time window contains continuously recorded vibration signals of the computer room structure.

[0064] The expression for calculating the vibration response value within each time window is:

[0065] ;

[0066] in, Indicates the first Vibration response values ​​within a time window, in m / s²; Indicates the first The duration of each time window is expressed in seconds. Indicates the first The start time of each time window, in seconds; Indicates the vibration sensor in time The vibration acceleration amplitude of the collected computer room structure vibration signal is expressed in m / s². Indicates the time window number, which is dimensionless; This indicates the sampling time of the vibration signal of the computer room structure, in seconds.

[0067] S2.2: Compare and identify the changes in vibration response between adjacent time windows in the vibration sample data to form vibration state change characteristic data;

[0068] Specifically, vibration response values ​​corresponding to adjacent time windows are selected one by one in chronological order and compared. By comparing the changes between vibration response values ​​of adjacent time windows, the changes in vibration response values ​​in chronological order, such as increase, decrease, and stability, are identified. The vibration response change states between adjacent time windows are recorded in correspondence with the corresponding time windows, so that each group of adjacent time windows forms a vibration response change record, thus forming vibration state change characteristic data.

[0069] S2.3: Based on the vibration state change characteristic data, the vibration response value is screened by time decay to determine the upper and lower limits of the vibration response and establish a structural vibration reference interval model.

[0070] Specifically, based on the vibration response change states recorded in the vibration state change characteristic data of adjacent time windows, the vibration response values ​​in the window vibration sample data are filtered in chronological order. The vibration response values ​​corresponding to the time windows showing stable changes in the vibration state change characteristic data are retained, while the vibration response values ​​corresponding to the time windows showing abrupt changes in the vibration state change characteristic data are removed, forming a set of filtered vibration response values. From the set of filtered vibration response values, the maximum vibration response value in the range of vibration response value change is selected as the upper bound of the vibration response, and the minimum vibration response value in the range of vibration response value change is selected as the lower bound of the vibration response. The upper and lower bounds of the vibration response are used as the allowable range of the vibration response, forming a structural vibration reference interval model for judging the structural vibration state.

[0071] It should be noted that when the vibration response change direction of adjacent time windows in the vibration state change characteristic data is consistent and the vibration response change amplitude changes gradually between three or more time windows without any jump, the vibration response change state of the corresponding time window is defined as a stable change state.

[0072] When the direction of vibration response change in adjacent time windows in the vibration state change characteristic data reverses, and the amplitude of vibration response change jumps between adjacent time windows, the vibration response change state of the corresponding time window is defined as an abrupt change state.

[0073] S2.4: Input the vibration response value from the structural vibration reference information into the structural vibration reference interval model, determine whether the vibration response value is within the upper and lower bounds of the vibration response, and form vibration interval discrimination data;

[0074] Specifically, the vibration response values ​​in the structural vibration reference information are extracted one by one according to the corresponding time markers in the structural vibration reference information. The vibration response values ​​corresponding to each time marker are then mapped to the allowable vibration response range recorded in the structural vibration reference interval model. By comparing each value one by one, it is confirmed whether the vibration response value corresponding to each time marker is within the allowable vibration response range. The vibration response values ​​corresponding to each time marker are marked as "within the allowable vibration response range" and "outside the allowable vibration response range". The discrimination states formed between the vibration response values ​​corresponding to each time marker and the allowable vibration response range are uniformly organized according to the time marker order to form vibration interval discrimination data.

[0075] S2.5: Identify the time window position in the vibration interval discrimination data where the vibration response value continuously deviates from the structural vibration reference interval model in chronological order, and form vibration state change discrimination information;

[0076] Specifically, the vibration interval discrimination data is examined one by one according to the time marker order. Based on the discrimination status of "within the allowable range of vibration response" and "outside the allowable range of vibration response" recorded in the vibration interval discrimination data, the vibration response values ​​corresponding to each time marker are compared sequentially. When the vibration response values ​​corresponding to three or more consecutive time markers are marked as "outside the allowable range of vibration response", the time window where the corresponding time marker is located is determined as the time window position where the vibration response value continuously deviates from the structural vibration reference interval model. The corresponding time markers and the corresponding time window positions are recorded uniformly in chronological order to form vibration state change discrimination information.

[0077] S2.6: Based on the vibration state change discrimination information, determine the time marker corresponding to the first sustained deviation of the vibration response value from the structural vibration reference interval model as the structural vibration start time.

[0078] Specifically, according to the time identifier order, the time window positions of the vibration response values ​​continuously deviating from the structural vibration reference interval model recorded in the vibration state change discrimination information are sequentially confirmed, and the earliest time window is identified in the time window positions of the vibration response values ​​continuously deviating from the structural vibration reference interval model. Within the earliest time window, the time identifier corresponding to the first continuous deviation of the vibration response value from the structural vibration reference interval model is confirmed according to the time identifier order, and the corresponding time identifier is determined as the structural vibration start time.

[0079] S3. Using the structural vibration start time as a reference, the inertial response vibration signal of the coolant is collected by a vibration sensor to form a liquid inertial response sequence. At the same time reference, the operating vibration signal of the liquid-cooled cabinet is collected to form the cabinet operating vibration response information.

[0080] S3.1: Using the structural vibration initiation time as the time reference, vibration sensors are installed in the inlet and return sections of the coolant circulation pipeline of the liquid-cooled cabinet, and vibration signals of the outer wall of the pipeline are collected to form pipeline vibration sampling data.

[0081] Specifically, using the structural vibration initiation time as the time reference, vibration sensors are fixedly installed on the outer walls of the inlet and return sections of the coolant circulation pipeline in the liquid-cooled cabinet. The vibration sensors are kept in stable contact with the outer walls of the inlet and return sections of the coolant circulation pipeline. The vibration sensors are activated at the time marker corresponding to the structural vibration initiation time to continuously sample the vibration signals generated on the outer walls of the inlet and return sections of the coolant circulation pipeline. The sampled vibration signals are recorded in a unified manner according to the time marker sequence to form pipeline vibration sampling data.

[0082] S3.2: The inlet section vibration signal and the return section vibration signal in the pipeline vibration sampling data are time-aligned and common-mode canceled according to a unified time identifier to form the coolant inertial response vibration signal;

[0083] Specifically, the inlet section vibration signal and the return section vibration signal in the pipeline vibration sampling data are time-aligned according to a unified time identifier. The inlet section vibration signal and the return section vibration signal are then organized according to the same time identifier, so that the inlet section vibration signal and the return section vibration signal form a set of corresponding signals at each time identifier. Common mode cancellation processing is performed on each set of corresponding signals to cancel out the same vibration components that appear in the inlet section vibration signal and the return section vibration signal at the same time identifier, and only the different vibration components between the inlet section vibration signal and the return section vibration signal are retained. The retained different vibration components are recorded uniformly according to the time identifier order to form the coolant inertial response vibration signal.

[0084] S3.3: Organize the coolant inertial response vibration signal according to the time sequence to generate a liquid inertial response sequence.

[0085] Specifically, the time markers corresponding to the coolant inertial response vibration signals are used as the sorting basis. The coolant inertial response vibration signals are arranged continuously in chronological order, and the coolant inertial response vibration signals corresponding to each time marker are kept as continuous vibration records on the same time axis, so that the coolant inertial response vibration signals form a complete sequence in the time dimension, generating a liquid inertial response sequence.

[0086] S3.4: Under the same time reference, vibration signals of the cabinet are collected using vibration sensors deployed on the liquid-cooled cabinet to form cabinet vibration sampling data;

[0087] Specifically, using the structural vibration start time as a unified time reference, vibration sensors are deployed at the structural location of the liquid-cooled cabinet, and the vibration sensors are activated at the time marker corresponding to the structural vibration start time to continuously sample the vibration generated during the operation of the liquid-cooled cabinet. The collected liquid-cooled cabinet vibration signals are then uniformly recorded according to the time marker sequence to form cabinet vibration sampling data.

[0088] S3.5: Align the cabinet vibration sampling data with the liquid inertial response sequence according to a unified time identifier to form cabinet liquid-aligned vibration data;

[0089] Specifically, based on the unified time markers recorded in the cabinet vibration sampling data, the cabinet vibration signals in the cabinet vibration sampling data are arranged in a corresponding order with the time markers in the liquid inertial response sequence according to the unified time markers. This ensures that the cabinet vibration signals in the cabinet vibration sampling data and the liquid inertial response sequence form a one-to-one time position relationship at the same time marker. The cabinet vibration signals and liquid inertial response sequences at the corresponding time markers are then uniformly organized to form cabinet liquid-aligned vibration data.

[0090] S3.6: Based on the cabinet liquid alignment vibration data, filter the cabinet vibration signals that change synchronously with the liquid inertial response sequence under the same time mark according to the time mark order to form the cabinet operation vibration response information.

[0091] Specifically, the vibration signals of the cabinets corresponding to each time marker in the cabinet liquid alignment vibration data are compared with the vibration changes of the liquid inertial response sequence at the same time marker according to the time marker order. When the liquid inertial response sequence shows vibration enhancement and vibration reduction at a certain time marker, it is also checked whether the cabinet vibration signals at the corresponding time marker in the cabinet liquid alignment vibration data show vibration changes in the same direction. That is, when the vibration of the liquid inertial response sequence increases, the cabinet vibration signal also increases synchronously, and when the vibration of the liquid inertial response sequence decreases, the cabinet vibration signal also decreases synchronously. When the same direction of change is found, the cabinet vibration signals at the corresponding time markers are retained and uniformly organized according to the time marker order to form cabinet operation vibration response information.

[0092] S4. Based on the structural vibration reference information and the liquid inertial response sequence, calculate the time difference between the structure and the liquid to form a structural-liquid time difference sequence. Based on the cabinet operation vibration response information, calculate the time difference between the liquid-cooled cabinet and the liquid to form a cabinet liquid time difference sequence.

[0093] S4.1: The structural vibration reference information and the liquid inertial response sequence are mapped to time windows according to a unified time identifier to form structural liquid time window vibration data;

[0094] Specifically, the time markers in the structural vibration reference information and the time markers in the liquid inertial response sequence are arranged according to a unified time marker, so that the vibration response values ​​in the structural vibration reference information and the liquid inertial response sequence correspond at the same time marker. The structural vibration reference information and the liquid inertial response sequence at the same time marker are then sequentially collected according to a preset time window, so that each time window simultaneously contains the vibration response value corresponding to the structural vibration reference information and the vibration record corresponding to the liquid inertial response sequence, forming structural liquid time window vibration data.

[0095] S4.2: Based on the structural fluid time window vibration data, identify the time markers of structural vibration response change and fluid inertial response change, and determine the time difference between the fluid response change time marker and the structural vibration change time marker to form structural fluid time difference data.

[0096] Specifically, the changes in vibration response values ​​corresponding to the structural vibration reference information recorded in each preset time window of the structural fluid vibration data are viewed in chronological order. When the vibration response value in the structural vibration reference information changes from being within the allowable range of vibration response to exceeding the allowable range, the time marker corresponding to the change position is confirmed as the structural vibration response change time marker. At the same time, the changes in the coolant inertial response vibration signal corresponding to the fluid inertial response sequence are viewed within the same preset time window. When the coolant inertial response vibration signal in the fluid inertial response sequence changes from a stable state to an enhancing or weakening state, the time marker corresponding to the change position is confirmed as the fluid inertial response change time marker. The sequential relationship between the fluid inertial response change time marker and the structural vibration response change time marker is recorded uniformly, and the time difference between the corresponding times of the fluid response change time marker and the structural vibration change time marker is determined, i.e., the time difference between the structure and the fluid, forming structural fluid time difference data.

[0097] S4.3: Organize the structural liquid time difference data continuously according to the time identifier order to form a structural liquid time difference sequence.

[0098] Specifically, according to the time marker order corresponding to the structural liquid time difference data, the structural liquid time difference data recorded at each time marker is arranged sequentially, and the structural liquid time difference data at each time marker is sequentially connected to the same time marker sequence, so that the structural liquid time difference data forms a continuous sequential record in the time dimension, forming a structural liquid time difference sequence.

[0099] S4.4: According to the preset time window, the liquid inertial response sequence is divided into corresponding segments with the cabinet operation vibration response information to obtain the equipment liquid corresponding vibration data;

[0100] Specifically, the coolant inertial response vibration signals in the liquid inertial response sequence are sequentially collected according to a preset time window, based on the order of the time markers already arranged in the liquid inertial response sequence. Each time window corresponds to a continuous time marker range. The cabinet vibration signals in the cabinet operation vibration response information are collected accordingly based on the continuous time marker range corresponding to the same time window. This ensures that the same time window simultaneously contains both the coolant inertial response vibration signals in the liquid inertial response sequence and the cabinet vibration signals in the cabinet operation vibration response information, thereby obtaining the equipment liquid corresponding vibration data.

[0101] S4.5: In the vibration data corresponding to the equipment liquid, identify the time of change of liquid inertial response and the time of change of cabinet operation vibration response in the order of time markers, and determine the time difference between the time of change of cabinet operation vibration response and the time of change of liquid inertial response to obtain equipment liquid time difference data.

[0102] Specifically, the changes in the coolant inertial response vibration signal recorded in each time window of the equipment liquid vibration data are viewed in chronological order. When the coolant inertial response vibration signal changes from a stable state to an increasing or decreasing state, the time marker corresponding to the change position is taken as the moment of liquid inertial response change. At the same time, the changes in the cabinet vibration signal in the cabinet operation vibration response information are viewed in the same time window. When the cabinet vibration signal in the cabinet operation vibration response information changes from a stable state to an increasing or decreasing state, the time marker corresponding to the change position is taken as the moment of cabinet operation vibration response change. The chronological relationship between the moment of cabinet operation vibration response change and the moment of liquid inertial response change is recorded uniformly, and the time difference between the moment of cabinet operation vibration response change and the moment of liquid inertial response change is determined, that is, the time difference between the liquid-cooled cabinet and the liquid, thus obtaining the equipment liquid time difference data.

[0103] S4.6: Arrange the equipment liquid time difference data corresponding to each time window continuously according to the time identifier order to obtain the cabinet liquid time difference sequence.

[0104] Specifically, the equipment liquid time difference data is arranged according to the time identifier order in the equipment liquid time difference data. The equipment liquid time difference data corresponding to each time window is arranged in the order of the time identifier, and the equipment liquid time difference data corresponding to each time identifier is recorded in a continuous order on the same time identifier sequence, so that the equipment liquid time difference data forms a continuous arrangement relationship in the time dimension, and the cabinet liquid time difference sequence is obtained.

[0105] S5. Based on the time difference sequence of liquid in the structure and the time difference sequence of liquid in the cabinet, the propagation direction of vibration in the structure, liquid and cabinet is inverted and judged to form a characteristic sequence of vibration propagation path.

[0106] S5.1: According to the unified time identifier, the time difference sequence of structural liquid and the time difference sequence of cabinet liquid are processed to form the time difference data corresponding to the structural liquid equipment.

[0107] Specifically, the time markers in the structural liquid time difference sequence and the time markers in the cabinet liquid time difference sequence are arranged according to a unified time marker, so that the structural liquid time difference sequence and the cabinet liquid time difference sequence form a correspondence at the same time marker. Then, the structural liquid time difference sequence and the cabinet liquid time difference sequence within the same time marker range are sequentially collected according to the time window, so that the same time window contains the time difference record corresponding to the structural liquid time difference sequence and the time difference record corresponding to the cabinet liquid time difference sequence, forming the time difference data corresponding to the structural liquid equipment.

[0108] S5.2: Based on the time difference data corresponding to the structure-liquid equipment, identify the sequential relationship between the changes in the time difference of the structure-liquid and the changes in the time difference of the equipment liquid within each time window, determine the propagation direction of vibration between the structure, liquid and equipment, and form propagation direction discrimination data;

[0109] Specifically, following the time stamp order, the time difference records corresponding to the structural liquid time difference sequence and the cabinet liquid time difference sequence are examined within each preset time window in the time difference data corresponding to the structural liquid equipment. Based on the order of appearance of the time difference records corresponding to the structural liquid time difference sequence and the cabinet liquid time difference sequence in the time stamp order, the propagation sequence of vibration among the structure, liquid, and cabinet is confirmed. When the time difference record corresponding to the structural liquid time difference sequence appears before the time difference record corresponding to the cabinet liquid time difference sequence, the corresponding time window is recorded as the direction of vibration propagation from the structure through the liquid to the equipment. When the time difference record corresponding to the cabinet liquid time difference sequence appears before the time difference record corresponding to the structural liquid time difference sequence, the corresponding time window is recorded as the direction of vibration propagation from the equipment through the liquid to the structure. The propagation direction states corresponding to each time window are uniformly recorded according to the time stamp order to form propagation direction discrimination data.

[0110] S5.3: Arrange the propagation direction discrimination data according to the time stamp order, and establish the correspondence between the time stamp and the propagation direction to form a vibration propagation path characteristic sequence.

[0111] Specifically, the propagation direction status recorded at each time marker is arranged sequentially according to the time marker order in the propagation direction discrimination data, and each time marker is recorded in correspondence with the corresponding propagation direction status, so that each time marker corresponds to a propagation direction status record. The propagation direction status records arranged in the order of time markers are continuously organized to form a vibration propagation path feature sequence.

[0112] S6. Based on the vibration propagation path characteristic sequence, identify the dominant source of vibration and the state of vibration propagation path, and generate a multimodal vibration sensing report.

[0113] S6.1: Based on a unified time identifier, identify the starting position of vibration propagation between structures, liquids, and equipment in the characteristic sequence of vibration propagation paths, determine the dominant source of vibration, and form vibration source discrimination data;

[0114] Specifically, following a unified time signature sequence, the propagation direction status corresponding to each time signature in the vibration propagation path feature sequence is examined. Based on the earliest propagation direction status in the vibration propagation path feature sequence, the starting position of vibration propagation between the structure, liquid, and equipment is determined. When the earliest propagation direction status in the vibration propagation path feature sequence is recorded as vibration propagating from the structure through the liquid to the equipment, the location of the structure is taken as the starting position of vibration propagation, and the structure is identified as the dominant source of vibration. When the earliest propagation direction status in the vibration propagation path feature sequence is recorded as vibration propagating from the equipment through the liquid to the structure, the location of the equipment is taken as the starting position of vibration propagation, and the equipment is identified as the dominant source of vibration. The starting positions of vibration propagation and the corresponding dominant sources of vibration are recorded uniformly according to the time signature sequence to form vibration source discrimination data.

[0115] S6.2: Based on the vibration source discrimination data and vibration propagation path characteristic sequence, organize the propagation source and propagation path at each time position according to the time identifier order, and generate a multimodal vibration sensing report.

[0116] Specifically, the vibration source identification data corresponding to each time marker in the vibration source identification data is organized in a unified time marker order to correspond with the propagation direction status corresponding to each time marker in the vibration propagation path feature sequence. This ensures that each time marker corresponds to both a vibration source record and a propagation direction status record. The vibration source identification data and the propagation direction status corresponding to each time marker are then arranged continuously in the time marker order to generate a multimodal vibration sensing report.

[0117] In summary, this invention achieves the following: Intelligent sensors are deployed at key locations in the liquid-cooled data center to collect structural vibration signals. A structural vibration reference interval model is established based on the structural vibration reference information, forming a stable vibration response reference range for the data center structure. Furthermore, the structural vibration reference interval model is used to identify the start time of structural vibration, enabling accurate identification of structural vibration changes during deviations from the vibration response interval. This establishes a unified time reference for collecting coolant inertial response vibration signals and rack operation vibration signals. The multi-source vibration information acquired by the intelligent sensors is organized under this unified time reference, ensuring a clear temporal relationship between structural vibration, liquid vibration, and equipment vibration, providing a reliable temporal basis for vibration propagation path identification.

[0118] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A multimodal vibration sensing method for liquid-cooled data centers, characterized in that, include: Structural vibration signals of the liquid-cooled data center room are collected and continuously recorded and processed with a unified time stamp to form structural vibration reference information; Based on structural vibration reference information, a structural vibration reference interval model is established, and the structural vibration initiation time is identified using the structural vibration reference interval model. The steps are as follows: According to the preset time window, the structural vibration reference information is continuously segmented and processed, and the vibration response value within each time window is calculated to form window vibration sample data; By comparing and identifying the changes in vibration response between adjacent time windows in the vibration sample data, characteristic data of vibration state changes are formed. Based on the characteristic data of vibration state change, the vibration response value is screened by time decay to determine the upper and lower limits of vibration response and establish a structural vibration reference interval model. Using the structural vibration initiation time as a reference, vibration sensors are used to collect the inertial response vibration signal of the coolant to form a liquid inertial response sequence. At the same time reference, the operating vibration signal of the liquid-cooled cabinet is collected to form the cabinet operating vibration response information. Based on the structural vibration reference information and the liquid inertial response sequence, the time difference between the structure and the liquid is calculated to form the structural-liquid time difference sequence. Based on the cabinet operation vibration response information, the time difference between the liquid-cooled cabinet and the liquid is calculated to form the cabinet liquid time difference sequence. Based on the structural fluid time difference sequence and the cabinet fluid time difference sequence, the propagation direction of vibration in the structure, fluid, and cabinet is inverted and determined to form a vibration propagation path feature sequence. The steps are as follows: The time difference sequence of structural liquid and the time difference sequence of cabinet liquid are processed according to a unified time identifier to form time difference data corresponding to structural liquid equipment. Based on the time difference data corresponding to the structure-liquid equipment, the sequential relationship between the changes in the time difference of the structure-liquid and the changes in the time difference of the equipment liquid is identified within each time window, and the propagation direction of vibration between the structure, liquid and equipment is determined to form propagation direction discrimination data; The propagation direction discrimination data are arranged in chronological order, and the correspondence between time markers and propagation direction is established to form a vibration propagation path characteristic sequence. Based on the vibration propagation path feature sequence, the dominant source of vibration and the state of the vibration propagation path are identified, and a multimodal vibration sensing report is generated. The steps are as follows: According to the unified time identifier, the starting position of vibration propagation between structure, liquid and equipment in the characteristic sequence of vibration propagation path is identified, and the dominant source of vibration is determined to form vibration source discrimination data; Based on the vibration source identification data and vibration propagation path characteristic sequence, the propagation sources and propagation paths at each time location are organized in chronological order to generate a multimodal vibration sensing report.

2. The multimodal vibration sensing method for liquid-cooled data centers as described in claim 1, characterized in that, The steps for forming structural vibration reference information are as follows: Vibration sensors were installed on the floor slab and foundation of the liquid-cooled data center server room to collect vibration signals of the server room structure and continuously sample and record them to form raw vibration time series data. The original vibration time series data is time-marked according to a unified time reference, and a one-to-one correspondence between vibration data and sampling time is established to form structural vibration time-marked data. The structural vibration time signature data is integrated with the original vibration time series data to form structural vibration reference information.

3. The multimodal vibration sensing method for liquid-cooled data centers as described in claim 1, characterized in that, The steps for identifying the structural vibration initiation time using a structural vibration reference interval model are as follows: Input the vibration response value from the structural vibration reference information into the structural vibration reference interval model, determine whether the vibration response value is within the upper and lower bounds of the vibration response, and form vibration interval discrimination data. Based on the chronological order, identify the time window position in the vibration interval discrimination data where the vibration response value continuously deviates from the structural vibration reference interval model, and form vibration state change discrimination information; Based on the vibration state change discrimination information, the time marker corresponding to the first sustained deviation of the vibration response value from the structural vibration reference interval model is determined as the structural vibration start time.

4. The multimodal vibration sensing method for liquid-cooled data centers as described in claim 3, characterized in that, The steps for forming the liquid inertial response sequence are as follows: Using the structural vibration initiation time as the time reference, vibration sensors were installed in the inlet and return sections of the coolant circulation pipeline of the liquid-cooled cabinet, and vibration signals of the outer wall of the pipeline were collected to form pipeline vibration sampling data. According to a unified time identifier, the inlet section vibration signal and the return section vibration signal in the pipeline vibration sampling data are time aligned and common mode canceled to form the coolant inertial response vibration signal; The coolant inertial response vibration signals are organized chronologically to generate a liquid inertial response sequence.

5. The multimodal vibration sensing method for liquid-cooled data centers as described in claim 4, characterized in that, The steps for generating the cabinet's operational vibration response information are as follows: Under the same time reference, vibration signals of the cabinet are collected using vibration sensors deployed on the liquid-cooled cabinet to form cabinet vibration sampling data; The cabinet vibration sampling data is time-aligned with the liquid inertial response sequence according to a unified time identifier to form cabinet liquid-aligned vibration data; Based on the cabinet liquid alignment vibration data, the cabinet vibration signals that change synchronously with the liquid inertial response sequence under the same time mark are filtered according to the time mark order to form the cabinet operation vibration response information.

6. The multimodal vibration sensing method for liquid-cooled data centers as described in claim 2 or 4, characterized in that, The steps for forming the time difference sequence of the structured liquid are as follows: The structural vibration reference information and the liquid inertial response sequence are mapped to time windows according to a unified time identifier to form structural liquid time window vibration data; Based on structural fluid time window vibration data, the time markers of structural vibration response change and fluid inertial response change are identified, and the time difference between the fluid response change time marker and the structural vibration change time marker is determined to form structural fluid time difference data. The structural liquid time difference data are organized continuously according to the time identifier order to form a structural liquid time difference sequence.

7. The multimodal vibration sensing method for liquid-cooled data centers as described in claim 1, characterized in that, The steps for forming the liquid timing difference sequence in the cabinet are as follows: According to the preset time window, the liquid inertial response sequence is divided into corresponding segments with the cabinet operation vibration response information to obtain the equipment liquid corresponding vibration data; In the vibration data corresponding to the equipment liquid, the time of change of liquid inertial response and the time of change of cabinet operation vibration response are identified in the order of time markers, and the time difference between the time of change of cabinet operation vibration response and the time of change of liquid inertial response is determined to obtain equipment liquid time difference data. The equipment liquid time difference data corresponding to each time window are arranged continuously according to the time identifier order to obtain the cabinet liquid time difference sequence.

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