Visual alerting method and system based on slope angle

Abstract

The present disclosure relates to a method and system for visual alerting based on a grade angle. The method comprises receiving a data frame from a shelf product device, wherein the shelf product device is capable of providing a grade angle audio alert but is not capable of providing a visual signal output; determining that a grade angle alert audio request is present in the data frame; displaying a visual alert element on a display, wherein the visual alert element is associated with the grade angle alert; and removing the visual alert element from the display after a triggering condition for the grade angle alert has been removed.

Description

Technical Field

[0001] This disclosure relates to the field of avionics systems, and more specifically to a method and system for visual warning prompts based on bank angle. Background Technology

[0002] With the rapid development of aviation technology, the airborne electronic equipment used in aircraft—especially civil aircraft—is becoming increasingly complex and integrated, resulting in a growing number of alarm signals in the cockpit. The purpose of the flight crew alarm system is to send alarms to the flight crew when the aircraft is in an abnormal operating or system state in order to attract the flight crew's attention.

[0003] However, with the increasing stringency of airworthiness requirements, the crew alarm designs of some existing aircraft models can no longer meet the new requirements. For example, for relatively mature off-the-shelf (TSO) airborne equipment, the fact that their existing designs have not been modified to comply with the new airworthiness requirements poses challenges to the airworthiness certification of the crew alarm system and the consistency of integrated alarms in the cockpit.

[0004] This disclosure addresses, but is not limited to, the many factors mentioned above. Summary of the Invention

[0005] To this end, this disclosure provides a method and system for visual alarm prompts based on slope angle. The method may include the FFDAS (Flight Crew Alarm System) determining whether an alarm has been triggered by acquiring and analyzing audio request signals from airborne rack product equipment regarding slope angle alarms. If an alarm is triggered, the signal is sent to a display system, which then generates and triggers a corresponding matching visual alarm prompt based on the processing results. Furthermore, the display system performs real-time logical judgment based on the alarm clearance envelope to monitor whether the alarm status persists. If the alarm conditions are cleared, the corresponding visual alarm prompt is removed.

[0006] Thus, the solution disclosed herein addresses the issue that current off-the-shelf product equipment cannot provide visual cues for bank angle warnings, thereby resolving a potential non-compliance with airworthiness regulations requiring alert levels and above to be promptly communicated to the crew through at least two sensory means. Furthermore, the solution disclosed herein achieves synchronization between voice and visual warnings, ensuring the effectiveness of the warnings and guaranteeing flight safety.

[0007] According to a first aspect of this disclosure, a slope angle-based visual alarm method is provided, comprising: receiving a data frame from a shelf product device, wherein the shelf product device is capable of providing a slope angle audio alarm but cannot provide a visual signal output; determining that a slope angle alarm audio request exists in the data frame; displaying a visual alarm element on a display, wherein the visual alarm element is associated with a slope angle alarm; and removing the visual alarm element from the display after the triggering condition of the slope angle alarm has been released.

[0008] According to one embodiment, the method further includes playing a slope angle alarm audio.

[0009] According to another embodiment, the method further includes: determining that a first alarm is currently playing; if the priority of the first alarm is lower than that of the slope angle alarm, after the smallest playback unit currently playing the first alarm has finished playing, terminating the playback of the first alarm and starting to play the slope angle alarm audio; and if the priority of the first alarm is higher than that of the slope angle alarm, queuing the slope angle alarm audio into a playback queue according to its priority.

[0010] According to another embodiment, the priority of the first alarm and the slope angle alarm is looked up from a table containing the priorities of the alarms.

[0011] According to another embodiment, the method further includes determining that the triggering condition for the bank angle alarm has been released based on the aircraft's current altitude and bank angle.

[0012] According to another embodiment, after determining that the triggering condition for the slope angle alarm has been released: it is determined that there is no slope angle alarm audio request in a predetermined number of consecutive data frames subsequently received from the shelf product equipment; and the visual alarm element is removed from the display.

[0013] According to a second aspect of this disclosure, a slope angle-based visual alarm system is provided, comprising: a shelf product device; a FDS; and a display system, wherein the shelf product device is configured to continuously send data frames to the FDS, and wherein the shelf product device can provide a slope angle audio alarm but cannot provide a visual signal output, the FDS being configured to: receive data frames from the shelf product device; determine that a slope angle alarm audio request exists in the data frames; notify the display system to display a visual alarm element, wherein the visual alarm element is associated with a slope angle alarm; and notify the display system to remove the visual alarm element after the triggering condition of the slope angle alarm has been released; the display system being configured to display or remove the visual alarm element in response to a notification from the FDS.

[0014] According to one embodiment, the system also includes an audio system for playing audio, wherein the FDAS is further configured to instruct the audio system to play a slope angle alarm audio.

[0015] According to yet another embodiment, the FDAS is also configured to determine that the triggering condition for the bank angle alarm has been released based on the aircraft's current altitude and bank angle.

[0016] According to yet another embodiment, the FDAS is further configured to, after determining that the triggering condition for the slope angle alarm has been released, determine that there is no slope angle alarm audio request in a predetermined number of consecutive data frames subsequently received from the shelf product equipment; and notify the display system to remove the visual alarm element.

[0017] According to a third aspect of this disclosure, an aircraft is provided, including the system described in the second aspect of this disclosure.

[0018] The aspects generally include, as substantially as described herein with reference to the accompanying drawings and as explained by the drawings, methods, apparatus, systems, computer program products, and processing systems.

[0019] The foregoing has broadly outlined the features and technical advantages of the examples according to this disclosure so that the following detailed description may be better understood. Additional features and advantages will be described thereafter. The disclosed concepts and specific examples can be readily used as the basis for modifying or designing other structures for implementing the same purposes as this disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, in both their organization and manner of operation, and their associated advantages, will be better understood by considering the following description in conjunction with the accompanying drawings. Each drawing is provided for illustrative and descriptive purposes and does not define any limitation on the claims. Attached Figure Description

[0020] To gain a more detailed understanding of the features described above in this disclosure, reference can be made to various aspects of the above-briefly summarized content, some of which are illustrated in the accompanying drawings. However, it should be noted that the drawings illustrate only certain typical aspects of this disclosure and should not be considered as limiting its scope, as other equivalent aspects are permissible in this description. Identical reference numerals in different drawings may identify the same or similar elements.

[0021] Figure 1 This is a flowchart of a slope angle-based visual alarm method according to an example embodiment of the present disclosure;

[0022] Figure 2 This is a schematic diagram of a slope angle visual warning display on the main flight display page according to an example embodiment of the present disclosure;

[0023] Figure 3 This is a schematic diagram of alarm sound playback in a multi-alarm situation according to an example embodiment of the present disclosure;

[0024] Figure 4 This is a schematic diagram illustrating the playback of a discontinuous alarm audio signal according to an example embodiment of the present disclosure.

[0025] Figure 5 This is a schematic block diagram of a slope-angle-based visual alarm system according to an example embodiment of the present disclosure; and

[0026] Figure 6 This is a schematic diagram illustrating an example aircraft according to an embodiment of the present disclosure. Detailed Implementation

[0027] Modern mainstream aircraft models all provide bank angle-based alarms, meaning that when the aircraft's bank angle exceeds a certain threshold, a corresponding alarm is triggered to alert the pilot of abnormal aircraft attitude. To reduce the complexity of FDAS (Airborne Data Security System), many aircraft use onboard rack-mounted product equipment for integrated monitoring as an optional feature for bank angle alarms; this rack-mounted product equipment issues corresponding bank angle alarm audio requests.

[0028] However, the inventors recognized that, since the off-grid product equipment can only provide audio alarms for bank angle but not visual signal output, and as an off-grid product, it cannot be modified according to the design requirements of the aircraft model and / or new airworthiness requirements. Furthermore, because the off-grid product equipment is designed for different aircraft models, the alarm levels defined internally may differ from the results of aircraft system design and safety analysis, and are not entirely consistent with the latest regulations' definitions of alarm levels. For example, new airworthiness regulations require: warning-level alarms require immediate crew awareness and response; alert-level alarms require immediate crew awareness but can be responded to later. Thus, some alarms may be suggested as advisory level (lower than warning and alert) in the off-grid product equipment, but in practice, considering factors such as overall aircraft alarms and safety analysis, the alarm level in the aircraft should be defined as alert level or even higher. In this case, if the off-grid product equipment cannot provide both audio and visual signals simultaneously, it cannot meet the requirement of the regulations that warning and alert level alarms should provide at least two sensory forms of alert.

[0029] For example, for slope angle alarms, the current mainstream rack-mounted equipment defines slope angle alarms as advisory level, providing only an audio signal. For example, Table 1 below gives an example of the slope angle alarm trigger envelope.

[0030] Table 1

[0031]

[0032] Table 1 illustrates a logic example for bank angle alarms. When the aircraft's bank angle becomes excessively large and enters the basic alarm envelope, two "BANK ANGLE" alarm sounds are triggered. Subsequently, the alarm envelope automatically increases by 20% from the basic envelope. When the aircraft enters the 20% enhanced envelope, two more "BANK ANGLE" alarm sounds are triggered. Then, the alarm envelope automatically increases by 40% from the basic envelope. When the aircraft enters the 40% enhanced envelope, two "BANK ANGLE" alarm sounds will be continuously emitted every three seconds. The alarm is cleared when the aircraft's bank angle becomes less than the basic envelope.

[0033] However, based on the analysis of the alarm envelope and operating procedures, pilot assessment results, and design recommendations in the SAE AC advisory circular, for certain aircraft design features, this alarm should be defined as a alert level, meaning that, according to airworthiness requirements, at least two sensory methods of alarm should be provided. However, off-the-shelf equipment only provides audio signals, and the signal triggering logic is not continuous, making it unsuitable for direct use in stimulating visual alarm displays. Furthermore, if visual alarm prompts are added solely based on the alarm logic of off-the-shelf equipment, the complexity of the alarm triggering logic and the undisclosed details of filtering, delay, and other algorithms within the airborne equipment could lead to a desynchronization between the visual signals generated by the display system and the auditory signals output by the airborne equipment, potentially affecting the crew's perception and understanding of the alarm.

[0034] Therefore, a technical solution is needed to address the above problem. This solution can combine alarm logic and audio signal request and trigger logic with existing audio signals, and after comprehensive processing, the display system can provide visual alarm prompts based on the slope angle to solve the problem.

[0035] To address this, this disclosure proposes a method and system for visual alarm prompts based on slope angle. The method may include the FDS (Floating Data System) determining whether an alarm has been triggered by acquiring and analyzing audio request signals from slope angle alarms of onboard rack equipment. If an alarm is triggered, the signal is sent to a display system, which then generates and triggers a corresponding matching visual alarm prompt based on the processing results. Furthermore, the display system performs real-time logical judgment based on the alarm clearance envelope to monitor whether the alarm status persists. If the alarm condition is cleared, the corresponding visual alarm prompt is removed.

[0036] Thus, the solution disclosed herein addresses the issue that current off-the-shelf product equipment cannot provide visual cues for bank angle warnings, thereby resolving a potential non-compliance with airworthiness regulations requiring alert levels and above to be promptly communicated to the crew through at least two sensory means. Furthermore, the solution disclosed herein achieves synchronization between voice and visual warnings, ensuring the effectiveness of the warnings and guaranteeing flight safety.

[0037] The detailed description that follows, taken in conjunction with the accompanying drawings, is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein can be practiced. This detailed description includes specific details to provide a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details.

[0038] refer to Figure 1 The diagram shows a flowchart of a slope angle-based visual alarm method 100 according to an embodiment of the present disclosure.

[0039] like Figure 1 As shown, method 100 may include, in block 110, receiving data frames from the shelf product equipment. In one embodiment of this disclosure, the shelf product equipment may periodically or irregularly transmit various information it detects, such as slope angle, to an onboard system (such as FDS), thereby providing an audio alarm for the slope angle but not a visual signal output.

[0040] Next, in block 120, method 100 may include determining that a slope angle alarm audio request exists in a data frame. In one embodiment of this disclosure, method 100 may be performed by the FDAS to extract and process the signal of a slope angle alarm audio request in a data frame transmitted by the shelf product equipment to determine that an alarm has been triggered.

[0041] After determining that a bank angle alarm audio request exists in the data frame transmitted by the shelf product equipment, it can be determined that a bank angle alarm has been triggered. Therefore, to provide a two-sensory alert to meet airworthiness requirements, method 100 may include, in block 130, displaying a visual alarm element on a display. In one embodiment of this disclosure, the displayed visual alarm element is associated with a bank angle alarm. Further according to this embodiment, the displayed visual alarm element may be associated with the aircraft's current bank angle. See also Figure 2 This illustrates a diagram of the bank angle visual warning display on the main flight display page. As shown, the character "BANK" is continuously displayed on the main flight display page. It will be understood that... Figure 2 The characters “BANK” and their number are shown. Figure 2 The two shown are merely examples; any number of other suitable visual alert elements can be displayed, which will not be elaborated upon here.

[0042] In box 140, method 100 may include removing the visual alarm element from the display after the triggering condition of the slope angle alarm has been cleared.

[0043] In another embodiment of this disclosure, method 100 may further include playing a bank angle alarm audio. For example, after determining that a bank angle alarm audio request exists in a data frame, method 100 may play the bank angle alarm audio synchronously with the display of a visual alarm element. Thus, the method of this disclosure (e.g., method 100) can solve the problem that bank angle alarms provided by current off-the-shelf product equipment cannot provide visual cues, thereby addressing the requirement in airworthiness regulations that alert levels and above must be promptly communicated to the crew through at least two sensory means. Simultaneously, through signal processing and analysis, synchronization of voice and visual alarms can be achieved, thereby ensuring the effectiveness of the alarms and guaranteeing flight safety.

[0044] In another embodiment of this disclosure, when a slope angle alarm audio request is received, there may be an alarm audio currently playing. Therefore, the slope angle alarm audio cannot be played immediately; it must wait until at least the smallest voice unit of the currently playing alarm audio has finished playing. Thus, in this embodiment, method 100 may include determining that a first alarm is currently playing; if the priority of the first alarm is lower than that of the slope angle alarm, stopping the playback of the first alarm and starting the playback of the slope angle alarm audio after the smallest playback unit of the first alarm has finished playing; and if the priority of the first alarm is higher than that of the slope angle alarm, queuing the slope angle alarm audio in a playback queue according to its priority so that the slope angle alarm audio is played only after the first alarm has completely finished playing. In this embodiment, the visual alarm associated with the slope angle alarm will be displayed on the display before the playback of the slope angle alarm audio (e.g., a new display page on the display, an unused area of ​​the currently displayed page, etc.), rather than waiting to be displayed while the slope angle alarm audio is playing. Therefore, method 100 can immediately display the situation to the unit in the form of a visual alarm the moment the slope angle alarm is triggered, instead of the unit only becoming aware of the alarm when the slope angle alarm audio is played (as mentioned above, this delay is due to the fact that the playback time of the alarm audio is not exactly the same as the alarm trigger time). Thus, by processing the audio request signal, method 100 ensures that even if other alarm audios are currently playing, the slope angle audio signal, placed in the playback queue, can still be promptly identified and captured, enabling the immediate display of the slope angle visual alarm element.

[0045] Combination Figure 3 The diagram illustrates the alarm audio playback principle in a multi-alarm scenario according to one embodiment. As shown, the current alarm audio (e.g., Triggered aural ID) is playing when a new alarm audio (Triggered aural ID 2) is triggered, thereby interrupting the current alarm audio.

[0046] Further according to this embodiment, the priority of the first alarm and the bank angle alarm can be looked up from a table containing the priorities of the alarms. In this embodiment, the priority levels of various alarms of the aircraft need to be determined according to the provisions of airworthiness regulations, and the priorities of each alarm can be pre-sorted and stored in a table or other suitable data structure. Thus, method 100 can look up and / or compare the priorities of the alarms by querying the table.

[0047] The inventors also recognized that, since the audio signal of the slope angle alarm is usually a discontinuous signal, the alarm system (e.g., FDS) periodically sends the corresponding audio ID request to the RIU (Remote Interface Unit) until the alarm system receives a reply from the RIU indicating that the Aural ID = 0 (audio ID = 0). At this point, the triggering state of the audio alarm ends, and communication between the FDS and the RIU returns to an idle state. However, the slope angle alarm state has not actually ended at this time; it is merely the end of one playback cycle of the audio signal. See also Figure 4 It shows a schematic diagram of the playback of a discontinuous alarm audio signal according to an example embodiment of the present disclosure.

[0048] like Figure 4 As shown, the FDAS transmitter periodically (e.g., the period is T) sends the corresponding audio ID. Figure 4 The Aural ID (as shown) and Triggered Aural ID are requested to the RIU (Remote Interface Unit) until the FDAS receiver receives a reply from the RIU with the status Aural ID = 0. At this point, the triggering state of the audio alarm ends, and the communication between the FDAS and the RIU will return to the idle state.

[0049] Therefore, for discontinuous slope angle alarms, although the alarm condition has not yet been cleared, the alarm system will no longer send the corresponding audio ID request after the alarm sound playback cycle ends. This means the validity of the slope angle alarm audio signal will disappear before the slope angle alarm state disappears. Therefore, it is impossible to determine whether the slope angle alarm condition persists based on the validity of the slope angle audio signal, nor is it possible to stimulate the display of a visual alarm solely based on the slope angle alarm audio signal.

[0050] Therefore, the display and alarm computer (such as the FDS system) needs to determine whether the alarm condition has been cleared by extracting and analyzing data such as the current aircraft altitude and bank angle, according to the corresponding alarm clearance logic. Thus, in another embodiment of this disclosure, method 100 can maintain the triggering of the bank angle alarm through the FDS system, i.e., the visual alarm element (for example, Figure 2The BANK character message on the main flight display page is continuously displayed until the alarm status is determined to be cleared. In this embodiment, method 100 may include determining that the triggering condition for the bank angle alarm has been cleared based on the aircraft's current altitude and bank angle. Thus, method 100 takes into account that the triggering condition for the bank angle alarm is relatively complex, while the clearing condition is relatively simple. This allows for the bank angle alarm notification to be achieved by optionally installing the bank angle alarm function in existing off-the-shelf products, and meets the latest crew alarm requirements through method 100, while reducing the complexity and computational load of the display and alarm computers.

[0051] To prevent the erroneous removal or frequent display / removal of the slope angle visual alarm element due to signal errors and / or frequent aircraft jitter causing frequent triggering of the slope angle alarm, in another embodiment of this disclosure, after determining that the triggering condition of the slope angle alarm has been released and before removing the visual alarm element from the display, method 100 may determine whether a slope angle alarm audio request is absent in a predetermined number of consecutive data frames subsequently received from the shelf product equipment. If method 100 determines that a slope angle alarm audio request is absent in the predetermined number of consecutive data frames, the visual alarm element is removed from the display; if method 100 determines that a slope angle alarm audio request exists in at least one of the predetermined number of consecutive data frames, method 100 maintains the display of the visual alarm element until it is determined that a slope angle alarm audio request is absent in the predetermined number of consecutive data frames. It will be understood that the predetermined number can be any suitable number (e.g., 3, 5, etc.), which will not be elaborated here. Further according to this embodiment, determining that a slope angle alarm audio request exists in a data frame at block 120 may include determining that a specific number of consecutive data frames contain a slope angle alarm audio request, thereby reducing false alarms of slope angle.

[0052] The following is for reference. Figure 5 The diagram illustrates a schematic block diagram of a slope-angle-based visual alarm system 500 according to an example embodiment of the present disclosure.

[0053] like Figure 5 As shown, system 500 may include shelf product equipment 501, FDS 503, and display system 505. In one embodiment of this disclosure, shelf product equipment 501 may be configured to continuously send data frames to the FDS. For example, shelf product equipment 501 may be any suitable airborne integrated surveillance equipment and may include bank angle alarm logic to determine whether to trigger a bank angle alarm based on the aircraft's flight status data (such as current altitude, bank angle, etc.) and transmit this determination result to FDS 503 in a data frame.

[0054] Further according to this embodiment, FDAS 503 can be configured to receive a data frame from the shelf product equipment 501; determine that a slope angle alarm audio request exists in the data frame; and notify the display system 505 to display a visual alarm element. In this embodiment, the visual alarm element can be associated with a slope angle alarm. For example, a specific bit in the data frame transmitted by the shelf product equipment 501 can indicate the presence or absence of a slope angle alarm (e.g., "0" indicates absence, while "1" indicates presence). FDAS 503 can make the above determination based on the value of this bit. Additionally, FDAS 503 can also be configured to notify the display system 505 to remove the visual alarm element associated with the slope angle alarm after the triggering condition of the slope angle alarm has been released.

[0055] In yet another embodiment of this disclosure, system 500 may further include an audio system for playing audio. Figure 5 (not shown in the image), whereby the FDAS 503 can also be configured to notify the audio system to play a slope angle alarm audio.

[0056] For example, after determining that a bank angle alarm audio request exists in the data frame, system 500 can play the bank angle alarm audio synchronously with the display of the visual alarm element. Thus, system 500 of this disclosure can solve the problem that bank angle alarms provided by current off-the-shelf products cannot provide visual cues, thereby addressing the requirement in airworthiness regulations that alert levels and above must be promptly communicated to the crew through at least two sensory means. Simultaneously, through signal processing and analysis, synchronization of voice and visual alarms can be achieved, ensuring the effectiveness of the alarms and guaranteeing flight safety.

[0057] In another embodiment of this disclosure, when a slope angle alarm audio request is received, there may be an alarm audio currently playing. Therefore, the slope angle alarm audio cannot be played immediately; it must wait until at least the smallest voice unit of the currently playing alarm audio has finished playing. Thus, in this embodiment, FDAS 503 can be configured to determine that the audio system is currently playing a first alarm; if the priority of the first alarm is lower than the slope angle alarm, notify the audio system to stop playing the first alarm and start playing the slope angle alarm audio after the smallest playing unit of the first alarm has finished playing; and if the priority of the first alarm is higher than the slope angle alarm, queue the slope angle alarm audio in the audio system's playback queue according to its priority, so that the slope angle alarm audio is played only after the first alarm has completely finished playing. In this embodiment, the visual alarm associated with the slope angle alarm will be displayed on the display system 505 before the playback of the slope angle alarm audio (e.g., a new display page on the monitor, an unused area of ​​the current display page, etc.), rather than waiting to be displayed while the audio system is playing the slope angle alarm audio. Therefore, system 500 can immediately display the slope angle alarm to the unit via visual alarm the moment it is triggered, instead of the unit only becoming aware of the alarm when the alarm audio is played (as mentioned above, this delay is due to the fact that the playback time of the alarm audio is not exactly the same as the alarm trigger time). Thus, by processing the audio request signal, system 500 ensures that even if other alarm audios are playing, the slope angle audio signal, placed in the playback queue, can still be promptly identified and captured, enabling the immediate display of the slope angle visual alarm element.

[0058] The inventors also recognized that, since the audio signal of the slope angle alarm is usually a discontinuous signal, the FDS 503 will periodically send the corresponding audio ID request to the RIU (Remote Interface Unit) until the FDS 503 receives a reply from the RIU with the status of Aural ID=0 (audio ID=0). At this time, the triggering state of the audio alarm ends, and the communication between the FDS and the RIU will return to the idle state. However, at this time, the state of the slope angle alarm has not actually ended; it is only the end of one playback cycle of the audio signal.

[0059] The inventors thus realized that for discontinuous slope angle alarms, although the alarm condition has not yet been cleared, the alarm system will no longer send the corresponding audio ID request after the alarm sound playback cycle ends. In other words, the validity of the slope angle alarm audio signal will disappear before the slope angle alarm state disappears. Therefore, it is impossible to determine whether the slope angle alarm condition persists based on the validity of the slope angle audio signal, nor is it possible to stimulate the display of a visual alarm solely through the slope angle alarm audio signal.

[0060] Therefore, the display and alarm computer (such as the FDS system and display system) needs to determine whether the alarm condition has been cleared by extracting and analyzing data such as the current aircraft altitude and bank angle, according to the corresponding alarm clearance logic. Thus, in another embodiment of this disclosure, the FDS 503 can be configured to maintain the triggering of the bank angle alarm, i.e., the visual alarm element (for example, ...). Figure 2 The BANK character message on the main flight display page is continuously displayed until the alarm status is determined to be cleared. In this embodiment, FDAS 503 can determine whether the triggering condition for the bank angle alarm has been cleared based on the aircraft's current altitude and bank angle. Thus, system 500 takes into account that the triggering condition for the bank angle alarm is relatively complex, while the clearing condition is relatively simple. This allows for the bank angle alarm notification to be achieved by selecting the bank angle alarm function in existing off-the-shelf products and meeting the latest crew alarm requirements through system 500, while reducing the complexity and computational load of the display and alarm computers.

[0061] To prevent the erroneous removal or frequent display / removal of the slope angle visual alarm element due to signal errors and / or frequent aircraft jitter causing frequent triggering of the slope angle alarm, in another embodiment of this disclosure, after determining that the triggering condition of the slope angle alarm has been released and before removing the visual alarm element from the display system 505, the FDS 503 may also be configured to determine whether there is no slope angle alarm audio request in a predetermined number of consecutive data frames subsequently received from the shelf-mounted product equipment. If the FDS 503 determines that there is no slope angle alarm audio request in the predetermined number of consecutive data frames, it notifies the display system 505 to remove the visual alarm element; if the FDS 503 determines that at least one of the predetermined number of consecutive data frames contains a slope angle alarm audio request, the FDS 503 does not notify the removal of the visual alarm element and the display system 505 will maintain the display of the visual alarm element until the FDS 503 determines that there is no slope angle alarm audio request in the predetermined number of consecutive data frames and notifies the display system 505 to remove the visual alarm element. It will be understood that the predetermined quantity can be any suitable quantity (e.g., 3, 5, etc.), which will not be elaborated further here. Further according to this embodiment, the FDAS 503 can also be configured to determine the presence of a slope angle alarm audio request in a data frame only if slope angle alarm audio requests are present in a specific number of consecutive data frames, thereby reducing false alarms such as slope angle alarms.

[0062] Further according to this embodiment, the display system 505 may be configured to display or remove visual alarm elements associated with the slope angle alarm after receiving a notification from the FDS 503.

[0063] although Figure 5The diagram shows system 500 comprising only shelf-mounted product equipment 501, FDAS 503, and display system 505. Those skilled in the art will understand that these three modules are related to the technical solutions of this disclosure. System 500 may also include any other suitable components or modules, such as an audio module for playing audio, various interface components, etc., which will not be elaborated upon here. Furthermore, although FDAS 503 and display system 505 are shown as separate modules, they can also be integrated together.

[0064] Figure 6 This is a schematic diagram illustrating an example aircraft 600 according to an embodiment of the present disclosure. In one embodiment, the aircraft 600 may include, according to... Figure 5 The system 500 shown and described.

[0065] As described above, the solution disclosed herein addresses the issue that current off-the-shelf product equipment cannot provide visual cues for bank angle warnings, thereby resolving a potential non-compliance with airworthiness regulations requiring alert levels and above to be promptly communicated to the crew through at least two sensory means. Furthermore, the solution disclosed herein achieves synchronization between voice and visual warnings, ensuring the effectiveness of the warnings and guaranteeing flight safety.

[0066] Those skilled in the art will understand that although various example embodiments are described in conjunction with slope angle alarms in this disclosure, the methods and systems of this disclosure are applicable to any other suitable alarms, provided that the shelf product equipment provides only audio alarms and not visual alarms.

[0067] Those skilled in the art will also understand that, in this disclosure, the terms “display” and “display system” are used interchangeably.

[0068] The above detailed description includes references to the accompanying drawings, which form part of the detailed description. The drawings illustrate specific embodiments that can be practiced by way of illustration. These embodiments are also referred to herein as “examples.” Such examples may include elements other than those shown or described. However, examples including the shown or described elements are also contemplated. Furthermore, examples of any combination or arrangement of those elements shown or described are contemplated, or with reference to specific examples (or one or more aspects thereof) shown or described herein, or with reference to other examples (or one or more aspects thereof) shown or described herein.

[0069] In the appended claims, the terms “comprising” and “including” are open-ended, meaning that a system, apparatus, article of manufacture, or process containing elements other than those listed after such terms in a claim is still considered to fall within the scope of that claim. Furthermore, in the appended claims, the terms “first,” “second,” and “third,” etc., are used merely as designations and are not intended to indicate a numerical order of their contents.

[0070] Furthermore, the order of operations described in this specification is exemplary. In alternative embodiments, the operations may be performed in a different order than that shown in the accompanying drawings, and the operations may be combined into a single operation or broken down into more operations.

[0071] The above description is intended to be illustrative and not restrictive. For example, the examples described above (or one or more aspects thereof) may be used in conjunction with other embodiments. Other embodiments may be used by those skilled in the art after reviewing the above description. The abstract allows the reader to quickly determine the nature of this technical disclosure. This abstract is submitted and it is understood that it is not intended to interpret or limit the scope or meaning of the claims. Furthermore, in the above detailed description, various features may be grouped together to make this disclosure flow smoothly. However, the claims may not state every feature disclosed herein, as embodiments may characterize a subset of said features. Furthermore, embodiments may include fewer features than those disclosed in a particular example. Therefore, the appended claims are thus incorporated into the detailed description, with each claim existing independently as a separate embodiment. The scope of the embodiments disclosed herein should be determined by reference to the full scope of the appended claims and equivalents of such claims.

Claims

1. A visual alarm method based on slope angle, comprising: Receive data frames from shelf product equipment, wherein the shelf product equipment can provide slope angle audio alarms but cannot provide visual signal output; It was determined that a slope angle alarm audio request existed in the data frame; Display visual alarm elements on the monitor, wherein the visual alarm elements are associated with slope angle alarms; as well as After the triggering conditions for the slope angle alarm have been cleared, the visual alarm element is removed from the display.

2. The method according to claim 1, characterized in that, It also includes playing slope angle warning audio.

3. The method according to claim 2, characterized in that, Also includes: Confirm that the first alarm is currently playing; If the priority of the first alarm is lower than that of the slope angle alarm, after the smallest playback unit currently playing the first alarm has finished playing, stop playing the first alarm and start playing the slope angle alarm audio. as well as If the priority of the first alarm is higher than that of the slope angle alarm, the slope angle alarm audio will be queued for playback according to its priority.

4. The method according to claim 3, characterized in that, The priority of the first alarm and the slope angle alarm is determined by looking up a table containing the priorities of the alarms.

5. The method according to claim 1, characterized in that, It also includes determining whether the triggering conditions for the bank angle alarm have been cleared based on the aircraft's current altitude and bank angle.

6. The method according to claim 5, characterized in that, After confirming that the triggering conditions for the slope angle alarm have been removed: Determining that no slope angle alarm audio request is present in a predetermined number of consecutive data frames subsequently received from the shelf product equipment; and Remove the visual alarm element from the display.

7. A visual alarm system based on slope angle, comprising: Shelving products and equipment; FDAS; as well as Display system, The shelf product equipment is configured to continuously send data frames to the FDAS, and the shelf product equipment can provide an audio alarm for the slope angle, but cannot provide a visual signal output. The FDAS is configured to: Receive data frames from the shelf product equipment; It was determined that a slope angle alarm audio request existed in the data frame; The notification system displays a visual alarm element, wherein the visual alarm element is associated with a slope angle alarm; as well as After the triggering conditions for the slope angle alarm have been cleared, the display system is notified to remove the visual alarm element; The display system is configured to display or remove the visual alarm elements in response to a notification from the FDAS.

8. The system according to claim 7, characterized in that, It also includes a sound system for playing audio, wherein the FDAS is further configured to instruct the sound system to play a slope angle alarm audio.

9. The system according to claim 7, characterized in that, The FDAS is also configured to determine whether the triggering conditions for the bank angle alarm have been released based on the aircraft's current altitude and bank angle.

10. The system according to claim 9, characterized in that, The FDAS is also configured to, after determining that the triggering condition for the slope angle alarm has been removed, determine that there is no slope angle alarm audio request in a predetermined number of consecutive data frames subsequently received from the shelf product equipment; and notify the display system to remove the visual alarm element.

11. An aircraft comprising the system according to any one of claims 7-10.

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