Fault detection method and device, aircraft and storage medium

Abstract

The invention discloses a fault detection method and device, an aircraft and a storage medium, and belongs to the technical field of aircrafts, the method is applied to an electronic equipment compartment ventilation system, the electronic equipment compartment ventilation system comprises a blower fan, a plurality of electronic equipment racks and ventilation branch pipelines in one-to-one correspondence with the plurality of electronic equipment racks, each electronic equipment rack is respectively communicated with an air outlet of the air blowing fan through a corresponding ventilation branch pipeline, and at least two ventilation branch pipelines are respectively provided with a cooling effect detector; according to the method, the current pipeline flow detected by each cooling effect detector is obtained, the specific value of any two current pipeline flows is determined, at least one pipeline flow ratio is obtained, and then the cooling effect is obtained based on the comparison condition between each pipeline flow ratio and a preset flow ratio threshold value. Therefore, the fault detection accuracy of the ventilation system of the electronic equipment compartment of the airplane is improved, and the safety of the system is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aircraft, in particular to a fault detection method and device, an aircraft and a storage medium. BACKGROUND

[0002] The electronic equipment cabin ventilation system of an aircraft is used to provide forced cooling air for the electronic equipment in the cabin, which is usually structured as shown in Figure 1 , including a blowing fan 1, two electronic equipment racks 21 and 22, and ventilation branch pipes 31 and 32 corresponding to the two electronic equipment racks, the two electronic equipment racks 21 and 22 are connected in communication with the air outlet of the blowing fan 1 through the corresponding ventilation branch pipes, respectively, the ventilation branch pipe 31 is provided with a cooling effect detector (CED) 41, i.e. CED1, for detecting the ventilation flow of the branch pipe, and the ventilation branch pipe 32 is provided with a cooling effect detector 42, i.e. CED2, for detecting the ventilation flow of the branch pipe.

[0003] Since the electronic equipment cabin ventilation system is one of the systems with the highest safety level requirement in the environmental control system, in the related art, when any cooling effect detector detects a low ventilation flow, an "air blowing failure" alarm is issued, and the detection result accuracy of this fault detection method is low, which reduces the safety of the electronic equipment cabin ventilation system. SUMMARY

[0004] In order to solve the problems of the prior art, the embodiments of the present application provide a fault detection method and device, an aircraft and a storage medium. The technical solution is as follows: On the one hand, a fault detection method is provided, which is applied to an electronic equipment cabin ventilation system, the electronic equipment cabin ventilation system includes a blowing fan, a plurality of electronic equipment racks and ventilation branch pipes corresponding to the plurality of electronic equipment racks, each electronic equipment rack is connected in communication with the air outlet of the blowing fan through the corresponding ventilation branch pipe, and at least two ventilation branch pipes are respectively provided with a cooling effect detector; the method comprises: obtaining the current pipe flow detected by each cooling effect detector; determining the ratio between any two current pipe flows to obtain at least one pipe flow ratio; determining a fault detection result based on the comparison between each pipe flow ratio and a preset flow ratio threshold value; the fault detection result indicates whether there is a blowing system failure.

[0005] In some exemplary embodiments, the determination of the fault detection result based on the comparison between each pipe flow ratio and a preset flow ratio threshold value comprises: determining a deviation between the pipeline flow ratio and a preset flow ratio threshold for each pipeline flow ratio; determining an anomaly detection result based on the deviation, the anomaly detection result indicating whether the pipeline flow ratio is abnormal; if there is a target anomaly detection result indicating abnormality, determining the fault detection result as a first fault detection result, the first fault detection result indicating that there is a fault of the air blowing system; if there is no target anomaly detection result indicating abnormality, determining the fault detection result as a second fault detection result, the second fault detection result indicating that there is no fault of the air blowing system.

[0006] In some example embodiments, the determining an anomaly detection result based on the deviation comprises: if the deviation is not zero, determining that the anomaly detection result indicates abnormality; or, if the deviation does not fall within a preset difference range, determining that the anomaly detection result indicates abnormality.

[0007] In some example embodiments, after the determining the fault detection result as a first fault detection result, the method further comprises: obtaining a current fan speed of the air blowing fan; determining a target pipeline design flow corresponding to the current fan speed based on a mapping relationship between fan speed and pipeline design flow, the pipeline design flow comprising branch design flows respectively corresponding to each of the ventilation branch pipelines; for two target cooling effect detectors corresponding to the target anomaly detection result, comparing the current pipeline flow of each target cooling effect detector with a corresponding target branch design flow to obtain a first comparison result corresponding to each target cooling effect detector, the first comparison result indicating whether within a design range; performing fault positioning based on the first comparison result corresponding to each target cooling effect detector to obtain a fault positioning result.

[0008] In some example embodiments, the performing fault positioning based on the first comparison result corresponding to each target cooling effect detector to obtain a fault positioning result comprises: if there is any first comparison result indicating higher than the design range and another first comparison result indicating within the design range, determining a first fault positioning result, the first fault positioning result representing that the target cooling effect detector corresponding to the first comparison result indicating higher than the design range has a flow drift high fault; If any of the first comparison results indicates above the design range and another of the first comparison results indicates below the design range, a second fault location result is determined, the second fault location result indicating that a disconnection fault exists in a pipeline downstream of a target cooling effect detector corresponding to the first comparison result indicating above the design range.

[0009] In some example embodiments, the method further comprises: performing fault alarm based on the first fault detection result and / or the fault location result.

[0010] In another aspect, a fault detection apparatus is provided, which is applied to an electronic equipment cabin ventilation system, the electronic equipment cabin ventilation system comprising a blowing fan, a plurality of electronic equipment racks, and a ventilation branch pipeline corresponding to each of the electronic equipment racks, each of the electronic equipment racks being connected to an air outlet of the blowing fan through a corresponding ventilation branch pipeline, and at least two of the ventilation branch pipelines being respectively provided with a cooling effect detector; the apparatus comprising: a pipeline flow acquisition module, configured to acquire a current pipeline flow detected by each of the cooling effect detectors; a pipeline flow ratio determination module, configured to determine a ratio between any two of the current pipeline flows, to obtain at least one pipeline flow ratio; a fault detection result determination module, configured to determine a fault detection result based on a comparison between each of the pipeline flow ratios and a preset flow ratio threshold value, the fault detection result indicating whether a blowing system fault exists.

[0011] In some example embodiments, the fault detection result determination module comprises: an abnormality detection result determination module, configured to determine, for each pipeline flow ratio, a deviation between the pipeline flow ratio and the preset flow ratio threshold value, and determine an abnormality detection result based on the deviation, the abnormality detection result indicating whether the pipeline flow ratio is abnormal; a first fault detection result determination module, configured to determine, when there is a target abnormality detection result indicating abnormality, that the fault detection result is a first fault detection result, the first fault detection result indicating that the blowing system fault exists; a second fault detection result determination module, configured to determine, when there is no target abnormality detection result indicating abnormality, that the fault detection result is a second fault detection result, the second fault detection result indicating that the blowing system fault does not exist.

[0012] In some example embodiments, the abnormality detection result determination module, when determining the abnormality detection result based on the deviation, is specifically configured to: determine that the abnormality detection result indicates an abnormality in a case where the deviation is not zero; or determine that the abnormality detection result indicates an abnormality in a case where the deviation does not fall within a preset deviation range.

[0013] In some example embodiments, the device further comprises: a fan rotating speed acquisition module configured to acquire a current fan rotating speed of the air blowing fan; a target design flow rate determination module configured to determine a target pipeline design flow rate corresponding to the current fan rotating speed based on a mapping relationship between the fan rotating speed and the pipeline design flow rate, the pipeline design flow rate including branch design flow rates respectively corresponding to the ventilation branch pipelines; a first comparison module configured to, for two target cooling effect detectors corresponding to the target abnormality detection result, compare the current pipeline flow rate and the corresponding target branch design flow rate of each target cooling effect detector to obtain a first comparison result corresponding to each target cooling effect detector, the first comparison result indicating whether it is within a design range; a fault location module configured to perform fault location based on the first comparison result corresponding to each target cooling effect detector to obtain a fault location result.

[0014] In some example embodiments, the fault location module is specifically configured to: if any of the first comparison results indicates being higher than the design range and another of the first comparison results indicates being within the design range, determine a first fault location result, the first fault location result indicating that the target cooling effect detector corresponding to the first comparison result indicating being higher than the design range has a flow rate drift high fault; if any of the first comparison results indicates being higher than the design range and another of the first comparison results indicates being lower than the design range, determine a second fault location result, the second fault location result indicating that a downstream pipeline of the target cooling effect detector corresponding to the first comparison result indicating being higher than the design range has a disengagement fault.

[0015] In some example embodiments, the device further comprises: a fault alarm module configured to perform fault alarm based on the first fault detection result and / or the fault location result.

[0016] In another aspect, provided is an aircraft, comprising the electronic equipment cabin ventilation system and the aforementioned fault detection device, the electronic equipment cabin ventilation system comprising a blowing fan, a plurality of electronic equipment racks, and a plurality of ventilation branch pipes corresponding to the plurality of electronic equipment racks, each of the electronic equipment racks being connected to the air outlet of the blowing fan through a corresponding ventilation branch pipe, and at least two of the ventilation branch pipes being respectively provided with a cooling effect detector.

[0017] In another aspect, provided is a computer readable storage medium, the computer readable storage medium storing at least one instruction or at least one program, the at least one instruction or the at least one program being loaded and executed by a processor to implement the fault detection method according to any one of the aspects.

[0018] In another aspect, provided is a computer program product comprising a computer program, the computer program being executed by a processor to implement the fault detection method according to any one of the aspects.

[0019] The present application obtains the current pipe flow detected by the cooling effect detector on each ventilation branch pipe, determines the ratio between any two current pipe flows, obtains at least one pipe flow ratio, and determines the fault detection result based on the comparison between each pipe flow ratio and the preset flow ratio threshold, the fault detection result indicating whether there is a blowing system fault, thereby avoiding the inaccuracy of the fault detection result caused by the hidden faults of the electronic equipment cabin ventilation system of the aircraft, such as the high flow of the cooling effect detector itself, the disconnection of the pipe downstream of the cooling effect detector, etc., greatly improving the fault detection accuracy of the electronic equipment cabin ventilation system of the aircraft, and further improving the safety of the electronic equipment cabin ventilation system. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 is an architecture schematic diagram of an electronic equipment cabin ventilation system of an aircraft provided by some embodiments of the present application; Figure 2 is another architecture schematic diagram of an electronic equipment cabin ventilation system of an aircraft provided by some embodiments of the present application; Figure 3 is a flow schematic diagram of a fault detection method provided by some embodiments of the present application; Figure 4 is a flow schematic diagram of another fault detection method provided by some embodiments of the present application; Figure 5 is a flowchart of another fault detection method provided by some embodiments of the present application; Figure 6 is a structural diagram of a fault detection device provided by some embodiments of the present application. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0024] "A and / or B" includes the following three combinations: only A, only B, and a combination of A and B.

[0025] The use of "adapted for" or "configured for" in the present application means open and inclusive language that does not exclude devices adapted for or configured for performing additional tasks or steps. In addition, the use of "based on" means open and inclusive, because the process, step, calculation or other action "based on" one or more stated conditions or values can be based on additional conditions or values beyond those stated in practice.

[0026] In this application, the word "exemplary" is used to mean "serving as an example, instance, or illustration." Any implementation described as "exemplary" in this application is not necessarily to be construed as preferred or advantageous over other implementations. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without using these specific details. In other instances, well-known structures and processes are not elaborated in order not to obscure the description of the present application with unnecessary details. Thus, the present application is not intended to be limited by the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

[0027] In the related art, for Figure 1 The common aircraft electronic equipment compartment ventilation system shown in the prior art, when performing fault detection, only monitors low flow, that is, when any cooling effect detector (CED) detects low flow in the pipeline, an "air blowing failure" alarm is issued, but this fault detection method, when the CED itself has a flow drift high fault, even if the flow in the pipeline is low, no alarm will be issued, thereby causing an unreported air blowing failure fault; in addition, if the downstream pipeline of the CED, that is, the pipeline between the CED and the corresponding electronic equipment rack, such as the pipeline between CED1 and electronic equipment rack 21 shown in Figure 1 The pipeline between CED2 and electronic equipment rack 22 is the downstream pipeline of CED2, has a disconnection fault, the CED will not issue any alarm, thereby also possibly causing an unreported air blowing failure fault. Therefore, the fault detection method for the aircraft electronic equipment compartment ventilation system in the related art has low detection result accuracy, reducing the safety of the electronic equipment compartment ventilation system.

[0028] In view of this, the present application provides a fault detection method, applied to an aircraft electronic equipment compartment ventilation system as shown in Figure 2Another electronic equipment cabin ventilation system shown, the electronic equipment cabin ventilation system includes a blowing fan 210, a plurality of electronic equipment racks 220 and a ventilation branch pipe 230 corresponding to the plurality of electronic equipment racks 220, each electronic equipment rack 220 is communicated with the air outlet of the blowing fan 210 through the corresponding ventilation branch pipe 230 respectively, at least two ventilation branch pipes 230 are respectively provided with cooling effect detector 240, the method is through obtaining the current pipe flow detected by the cooling effect detector on each ventilation branch pipe, and determining the ratio between any two current pipe flows, obtaining at least one pipe flow ratio, and then based on the comparison between each pipe flow ratio and the preset flow ratio threshold, the fault detection result is determined, which indicates whether there is a blowing system fault, thereby avoiding the inaccuracy of the fault detection result caused by the hidden faults of the aircraft electronic equipment cabin ventilation system, such as the high flow of the cooling effect detector itself, the disconnection of the cooling effect detector downstream pipe, etc., greatly improving the fault detection accuracy of the aircraft electronic equipment cabin ventilation system, and then improving the safety of the electronic equipment cabin ventilation system; and compared with the visual inspection and transposition inspection every several thousand hours of flight to check the above-mentioned hidden faults, the exposure time of the hidden faults can be reduced from several thousand hours of periodic inspection to an average flight time of several hours, greatly improving the system safety.

[0029] Please refer to Figure 3 , which shows a flowchart of a fault detection method provided by the embodiment of the application, which can be applied to the aircraft electronic equipment cabin ventilation system shown in Figure 2 . It should be noted that the present specification provides method operation steps as described in the embodiment or flowchart, but more or fewer operation steps can be included based on conventional or non-creative labor. The order of steps listed in the embodiment is only one of the many execution orders, and it does not represent the only execution order. In actual system or product execution, the method order shown in the embodiment or the drawing can be executed in sequence or in parallel (for example, in a parallel processor or multi-threaded processing environment). Specifically as Figure 3 shown, the fault detection method can include: S301, obtaining the current pipe flow detected by each cooling effect detector.

[0030] Specifically, the detection signal of the cooling effect detector on the ventilation branch pipe can be converted by using a remote data interface unit (RDIU), so that the real-time flow reading of each cooling effect detector can be obtained, which is the current pipe flow detected by the corresponding cooling effect detector.

[0031] S303, determining the ratio between any two current pipe flows, obtaining at least one pipe flow ratio.

[0032] For example, there are three cooling effect detectors on the three branch air ducts, so that the current duct flow detected by each of the three cooling effect detectors (e.g., CED1, CED2 and CED3) can be obtained, such as F CED1 , F CED2 , F CED3 , F CED1 / F CED2 , F CED1 / F CED3 and F CED2 / F CED3 can be calculated, so that three duct flow ratios can be obtained.

[0033] S305, based on the comparison between each of the duct flow ratios and a preset flow ratio threshold value, determine a fault detection result, the fault detection result indicating whether there is a fault in the air blowing system.

[0034] The preset flow ratio threshold value is associated with the flow distribution of the multiple branch air ducts of the electronic device cabin air ventilation system, which is usually fixed, so that the preset flow ratio threshold value can be obtained according to the flow distribution of the multiple branch air ducts. By comparing each duct flow ratio with the preset flow ratio threshold value, and based on the comparison, a fault detection result indicating whether there is a fault in the air blowing system can be determined. Specifically, the fault in the air blowing system in the embodiments of the present application can include a high flow drift of the cooling effect detector itself, and a disconnection fault of the downstream duct of the cooling effect detector.

[0035] Specifically, assuming that any CED has a high flow drift fault, the corresponding duct flow ratio will be inconsistent with the preset flow ratio threshold value, indicating that there is a fault. Assuming that the downstream duct of any CED has a disconnection fault, it will inevitably reduce the flow resistance of the branch air duct, thereby causing a change in the flow resistance ratio of each branch air duct, which will also make the corresponding duct flow ratio inconsistent with the preset flow ratio threshold value, indicating that there is a fault.

[0036] In some exemplary embodiments, as shown in Figure 4 , the above step S305 can include, when implemented: S401, for each duct flow ratio, determine the deviation between the duct flow ratio and the preset flow ratio threshold value; based on the deviation, determine an abnormality detection result, the abnormality detection result indicating whether the duct flow ratio is abnormal.

[0037] For example, determining the abnormality detection result based on the deviation includes: in the case that the deviation is not zero, determining that the abnormality detection result indicates an abnormality; or, in the case that the deviation does not fall within a preset difference range, determining that the abnormality detection result indicates an abnormality.

[0038] Specifically, if the deviation between the pipeline flow ratio and the preset flow ratio threshold is not zero, it indicates that the pipeline flow ratio is inconsistent with the preset flow ratio threshold, and the pipeline flow ratio is abnormal; otherwise, if the deviation between the pipeline flow ratio and the preset flow ratio threshold is zero, it indicates that the pipeline flow ratio is consistent with the preset flow ratio threshold, and the pipeline flow ratio is normal.

[0039] In view of the error of flow detection, in order to improve the accuracy of the abnormal detection result, a preset difference range can be set according to actual experience, if the deviation between the pipeline flow ratio and the preset flow ratio threshold does not fall within the preset difference range, it indicates that the pipeline flow ratio is inconsistent with the preset flow ratio threshold, and the pipeline flow ratio is abnormal; otherwise, if the deviation between the pipeline flow ratio and the preset flow ratio threshold falls within the preset difference range, it indicates that the pipeline flow ratio is consistent with the preset flow ratio threshold, and the pipeline flow ratio is normal.

[0040] S403, if there is a target abnormal detection result indicating abnormality, determining that the fault detection result is a first fault detection result, and the first fault detection result indicates that there is a blast system fault.

[0041] S405, if there is no target abnormal detection result indicating abnormality, determining that the fault detection result is a second fault detection result, and the second fault detection result indicates that there is no blast system fault.

[0042] Specifically, if there is a target abnormal detection result indicating abnormality, it indicates that there is a situation that the pipeline flow ratio is inconsistent with the preset flow ratio threshold, at this time, a first fault detection result indicating that there is a blast system fault can be generated, and specifically, it can indicate that there is a CED flow drift high, CED downstream pipeline rupture and detachment fault; otherwise, if there is no target abnormal detection result indicating abnormality, it indicates that each pipeline flow ratio is consistent with the preset flow ratio threshold, at this time, a second fault detection result indicating that there is no blast system fault can be generated, and specifically, it can indicate that there is no CED flow drift high, CED downstream pipeline rupture and detachment fault.

[0043] The above embodiment can detect and compare the current pipeline flow of any two CEDs in real time, and if the pipeline flow ratio is inconsistent with the preset flow ratio threshold, it is determined that there is a fault in the air blowing system, so as to detect the hidden fault of the electronic equipment cabin ventilation system of the aircraft in real time, such as the high flow of the cooling effect detector itself, the disconnection of the pipeline downstream of the cooling effect detector, etc., avoid the inaccurate fault detection result caused by the hidden fault of the electronic equipment cabin ventilation system of the aircraft, greatly improve the fault detection accuracy of the electronic equipment cabin ventilation system of the aircraft, timely expose these hidden faults, avoid flying with hidden faults, and further improve the safety of the electronic equipment cabin ventilation system.

[0044] In some exemplary embodiments, in order to accurately locate the position of the fault, such as Figure 5 As shown in the figure, after determining that the fault detection result is the first fault detection result, the method can further include: S501, obtaining the current fan speed of the air blowing fan.

[0045] S503, determining the target pipeline design flow corresponding to the current fan speed based on the mapping relationship between the fan speed and the pipeline design flow.

[0046] Among them, the pipeline design flow in the mapping relationship includes the branch design flow corresponding to each ventilation branch pipeline, and the target pipeline design flow includes the target branch design flow corresponding to each ventilation branch pipeline.

[0047] In actual application, the mapping relationship between the fan speed and the pipeline design flow can include a plurality of fan speed ranges and pipeline design flows corresponding to each fan speed range, so that when the target pipeline design flow corresponding to the current fan speed is determined, the target fan speed range containing the current fan speed can be determined first, and the pipeline design flow corresponding to the target fan speed range is taken as the target pipeline design flow.

[0048] S505, for the two target cooling effect detectors corresponding to the target abnormality detection result, comparing the current pipeline flow of each target cooling effect detector with the corresponding target branch design flow to obtain the first comparison result corresponding to each target cooling effect detector, and the first comparison result indicates whether it is within the design range.

[0049] For example, assuming that F CED1 / F CED2 is abnormal, the target branch design flow of the ventilation branch pipeline corresponding to CED1 is F design 1, and the target branch design flow of the ventilation branch pipeline corresponding to CED2 is F design 2, then F CED1 1 and F design1, if F CED1 is consistent with F design 1, the first comparison result corresponding to the CED1 indicates that it is within the design range, if F CED1 is less than F design 1, the first comparison result corresponding to the CED1 indicates that it is below the design range, if F CED1 is greater than F design 1, the first comparison result corresponding to the CED1 indicates that it is above the design range. Meanwhile, F CED2 is compared with F design 2, to obtain the first comparison result corresponding to the CED2, if F CED2 is consistent with F design 2, the first comparison result corresponding to the CED2 indicates that it is within the design range, if F CED2 is less than F design 2, the first comparison result corresponding to the CED2 indicates that it is below the design range, if F CED2 is greater than F design 2, the first comparison result corresponding to the CED2 indicates that it is above the design range.

[0050] S507, based on the first comparison result corresponding to each target cooling effect detector, fault positioning is performed to obtain a fault positioning result.

[0051] The fault positioning result can indicate a fault type and the fault position. The fault type can include a first fault type indicating that the cooling effect detector has a flow drift high fault and a second fault type indicating that the downstream pipeline of the cooling effect detector has a disconnection fault.

[0052] In some exemplary embodiments, when the fault positioning result is obtained based on the first comparison result corresponding to each target cooling effect detector, the step S507 can include: if any of the first comparison results indicates that it is above the design range and another first comparison result indicates that it is within the design range, a first fault positioning result is determined, which represents that the target cooling effect detector corresponding to the first comparison result indicating that it is above the design range has a flow drift high fault; if any of the first comparison results indicates that it is above the design range and another first comparison result indicates that it is below the design range, a second fault positioning result is determined, which represents that the downstream pipeline of the target cooling effect detector corresponding to the first comparison result indicating that it is above the design range has a disconnection fault.

[0053] The foregoing F CED1 / F CED2For example, the fault location can be performed by Table 1 below, wherein "+" represents higher than the design range, "-" represents lower than the design range, and "=" represents within the design range.

[0054] Table 1

[0055] The above embodiment further combines the current pipeline flow (i.e., the absolute value detected) and the pipeline design flow detected by each cooling effect detector to perform fault location after obtaining the first fault detection result indicating that there is a fault in the air blowing system, so as to timely expose hidden faults, further locate which fault and the specific position of the fault, and improve the accuracy of fault detection.

[0056] In some exemplary embodiments, after obtaining the first fault detection result and / or the fault location result, fault warning can be performed based on the first fault detection result and / or the fault location result, so as to avoid flying with hidden faults and improve the safety of the system.

[0057] In a specific implementation, when the first fault detection result is obtained, a crew warning of "air blowing system fault" is issued, and when the fault location result is obtained, a fault report based on the fault location result is issued to the onboard maintenance system, which can indicate the air blowing system fault and contain the fault location result, i.e., the fault type and the fault position.

[0058] Corresponding to the fault detection methods provided in the above several embodiments, the embodiments of the present application also provide a fault detection device applied to an electronic equipment cabin ventilation system, wherein the electronic equipment cabin ventilation system includes an air blowing fan, a plurality of electronic equipment racks, and a ventilation branch pipeline corresponding to each of the electronic equipment racks. Each electronic equipment rack is connected to the air outlet of the air blowing fan through the corresponding ventilation branch pipeline, and at least two ventilation branch pipelines are respectively provided with a cooling effect detector. Since the fault detection device provided in the embodiments of the present application corresponds to the fault detection methods provided in the above several embodiments, the implementation modes of the foregoing fault detection methods are also applicable to the fault detection device provided in the embodiments of the present application, which will not be described in detail in the embodiments.

[0059] Please refer to Figure 6 which is a structural schematic diagram of a fault detection device provided in the embodiments of the present application. The device has the function of implementing the fault detection method in the above method embodiments, which can be implemented by hardware or corresponding software executed by hardware. As Figure 6 shown, the fault detection device 600 can include: A pipeline flow acquisition module 610 is configured to acquire the current pipeline flow detected by each cooling effect detector. The pipeline flow ratio determination module 620 is configured to determine a ratio between any two of the current pipeline flows, to obtain at least one pipeline flow ratio. The fault detection result determination module 630 is configured to determine a fault detection result based on a comparison between each of the pipeline flow ratios and a preset flow ratio threshold. The fault detection result indicates whether there is a fault in the air blowing system.

[0060] In some example embodiments, the fault detection result determination module 630 includes: An anomaly detection result determination module is configured to determine, for each pipeline flow ratio, a deviation between the pipeline flow ratio and the preset flow ratio threshold, and determine an anomaly detection result based on the deviation. The anomaly detection result indicates whether the pipeline flow ratio is abnormal. A first fault detection result determination module is configured to determine, when there is a target anomaly detection result indicating abnormality, that the fault detection result is a first fault detection result. The first fault detection result indicates that there is a fault in the air blowing system. A second fault detection result determination module is configured to determine, when there is no target anomaly detection result indicating abnormality, that the fault detection result is a second fault detection result. The second fault detection result indicates that there is no fault in the air blowing system.

[0061] In some example embodiments, when determining an anomaly detection result based on the deviation, the anomaly detection result determination module is specifically configured to: determine that the anomaly detection result indicates abnormality when the deviation is not zero; or determine that the anomaly detection result indicates abnormality when the deviation does not fall within a preset deviation range.

[0062] In some example embodiments, the device 600 further includes: The fan speed acquisition module is configured to acquire a current fan speed of the air blowing fan. The target design flow determination module is configured to determine a target pipeline design flow corresponding to the current fan speed based on a mapping relationship between fan speed and pipeline design flow. The pipeline design flow includes a branch design flow corresponding to each of the ventilation branch pipelines. The first comparison module is configured to, for two target cooling effect detectors corresponding to the target anomaly detection result, compare the current pipeline flow of each of the target cooling effect detectors with a corresponding target branch design flow, to obtain a first comparison result corresponding to each of the target cooling effect detectors. The first comparison result indicates whether it is within a design range. The fault positioning module is configured to perform fault positioning based on the first comparison result corresponding to each of the target cooling effect detectors, to obtain a fault positioning result.

[0063] In some example embodiments, the fault locating module is specifically configured to: if any of the first comparison results indicates a value higher than the design range and another of the first comparison results indicates a value within the design range, determine a first fault locating result, the first fault locating result indicating that the target cooling effect detector corresponding to the first comparison result indicating a value higher than the design range has a high flow fault; if any of the first comparison results indicates a value higher than the design range and another of the first comparison results indicates a value lower than the design range, determine a second fault locating result, the second fault locating result indicating that the pipeline downstream of the target cooling effect detector corresponding to the first comparison result indicating a value higher than the design range has a disconnection fault.

[0064] In some example embodiments, the device 600 further comprises: a fault alarm module configured to perform fault alarm based on the first fault detection result and / or the fault locating result.

[0065] It should be noted that the device provided in the above embodiments, in realizing its functions, is only exemplified by the above division of functional modules, and in actual application, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the above described functions. In addition, the device and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process is detailed in the method embodiments, which will not be repeated here.

[0066] The electronic device cabin ventilation system comprises a blowing fan, a plurality of electronic device racks, and a plurality of ventilation branch pipelines corresponding to the plurality of electronic device racks one by one. Each electronic device rack is connected to the air outlet of the blowing fan through a corresponding ventilation branch pipeline. Cooling effect detectors are arranged on at least two ventilation branch pipelines.

[0067] The embodiment of the present application further provides a computer readable storage medium, wherein at least one instruction or at least one program is stored in the computer readable storage medium, and the at least one instruction or the at least one program is loaded and executed by a processor to implement any one of the fault detection methods in the embodiments of the present application.

[0068] Optionally, in the embodiment, the storage medium can include, but is not limited to, a U disk, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and various storage program code storage media.

[0069] The embodiment of the present application further provides a computer program product comprising a computer program which, when executed by a processor, implements any of the fault detection methods in the embodiments of the present application.

[0070] It should be noted that the above-mentioned sequence of the embodiments of the present application is only for description, and does not represent the advantages and disadvantages of the embodiments. The above describes specific embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be executed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multi-task processing and parallel processing are possible or can be advantageous.

[0071] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other. Each embodiment focuses on the difference from other embodiments. In particular, for the device embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiments.

[0072] The above describes in detail the fault detection method, device, aircraft and storage medium provided by the embodiments of the present application. The principle and implementation of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method and its core idea of the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation and application range will be changed. In summary, the content of the present application should not be understood as a limitation.

Claims

1. A fault detection method, characterized in that, An electronic equipment compartment ventilation system is applied, comprising a blower fan, multiple electronic equipment racks, and ventilation branch ducts corresponding to each rack. Each rack is connected to the outlet of the blower fan via a corresponding ventilation branch duct, and at least two ventilation branch ducts are equipped with cooling effect detectors. The method includes: Obtain the current pipeline flow detected by each of the cooling effect detectors; Determine the ratio between any two current pipeline flow rates to obtain at least one pipeline flow rate ratio; Based on the comparison between the flow ratio of each pipeline and the preset flow ratio threshold, the fault detection result is determined; the fault detection result indicates whether there is a fault in the blower system.

2. The method according to claim 1, characterized in that, The determination of the fault detection result based on the comparison between the flow ratio of each pipeline and the preset flow ratio threshold includes: For each pipeline flow ratio, the deviation between the pipeline flow ratio and a preset flow ratio threshold is determined; based on the deviation, an anomaly detection result is determined, and the anomaly detection result indicates whether the pipeline flow ratio is abnormal; If there is a target anomaly detection result indicating an anomaly, then the fault detection result is determined to be the first fault detection result, which indicates that there is a blower system fault. If no abnormality detection result is found, the fault detection result is determined to be the second fault detection result, which indicates that there is no fault in the blower system.

3. The method according to claim 2, characterized in that, The determination of the anomaly detection result based on the deviation includes: If the deviation is not zero, the anomaly detection result is determined to be an anomaly; or, If the deviation does not fall within the preset difference range, the abnormal detection result is determined to be abnormal.

4. The method according to claim 2 or 3, characterized in that, After determining the fault detection result as the first fault detection result, the method further includes: Obtain the current fan speed of the blower fan; Based on the mapping relationship between fan speed and pipeline design flow rate, the target pipeline design flow rate corresponding to the current fan speed is determined, and the pipeline design flow rate includes the branch design flow rate corresponding to each of the ventilation branch pipelines. For the two target cooling effect detectors corresponding to the target anomaly detection results, the current pipeline flow rate of each target cooling effect detector is compared with the design flow rate of the corresponding target branch to obtain the first comparison result corresponding to each target cooling effect detector. The first comparison result indicates whether it is within the design range. Based on the first comparison results corresponding to each of the target cooling effect detectors, the fault location is performed to obtain the fault location result.

5. The method according to claim 4, characterized in that, The fault location result obtained by performing fault location based on the first comparison result corresponding to each of the target cooling effect detectors includes: If any of the first comparison results indicates that the flow rate is higher than the design range, and the other first comparison result indicates that the flow rate is within the design range, then it is determined as the first fault location result. The first fault location result indicates that the target cooling effect detector corresponding to the first comparison result with the indication higher than the design range has a flow rate drift fault. If any of the first comparison results indicates that the value is higher than the design range and another first comparison result indicates that the value is lower than the design range, then it is determined to be a second fault location result. The second fault location result indicates that the downstream pipeline of the target cooling effect detector corresponding to the first comparison result with the value higher than the design range has a disconnection fault.

6. The method according to claim 4, characterized in that, The method further includes: A fault alarm is issued based on the first fault detection result and / or the fault location result.

7. A fault detection device, characterized in that, An application for an electronic equipment compartment ventilation system, the electronic equipment compartment ventilation system including a blower fan, multiple electronic equipment racks, and ventilation branch ducts corresponding to each of the multiple electronic equipment racks, each of the electronic equipment racks being connected to the air outlet of the blower fan through a corresponding ventilation branch duct, and at least two of the ventilation branch ducts being equipped with cooling effect detectors; the device includes: The pipeline flow acquisition module is used to acquire the current pipeline flow detected by each of the cooling effect detectors; The pipeline flow ratio determination module is used to determine the ratio between any two current pipeline flow rates to obtain at least one pipeline flow ratio; The fault detection result determination module is used to determine the fault detection result based on the comparison between the flow ratio of each pipeline and the preset flow ratio threshold; the fault detection result indicates whether there is a fault in the blower system.

8. An aircraft, characterized in that, The device includes an electronic equipment compartment ventilation system and a fault detection device as described in claim 7. The electronic equipment compartment ventilation system includes a blower fan, multiple electronic equipment racks, and ventilation branch pipes corresponding to each of the multiple electronic equipment racks. Each electronic equipment rack is connected to the air outlet of the blower fan through a corresponding ventilation branch pipe. At least two of the ventilation branch pipes are respectively equipped with cooling effect detectors.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one instruction or at least one program, which is loaded and executed by a processor to implement the fault detection method as described in any one of claims 1 to 6.

10. A computer program product, characterized in that, It includes a computer program that, when executed by a processor, implements the fault detection method as described in any one of claims 1 to 6.

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