Airplane ground parking atmospheric sensor temperature abnormity alarm system

Abstract

An aircraft ground parking atmospheric sensor temperature abnormity alarm system comprises a total pressure sensor, a static pressure sensor, a total temperature sensor, an atmospheric data computer, a central alarm computer and a display control unit. The abnormal high temperature condition of the atmospheric sensor in the ground state can be effectively and automatically detected, an alarm is given out in time, and intelligent diagnosis and early warning of the temperature abnormal risk of the atmospheric sensor parked on the ground of an airplane are achieved.

Description

Technical Field

[0001] This application belongs to the field of aircraft ground parking atmospheric sensor temperature anomaly detection technology, specifically relating to an aircraft ground parking atmospheric sensor temperature anomaly alarm system. Background Technology

[0002] To meet the high reliability and safety requirements of modern large aircraft, their air data systems generally employ a redundancy design. These systems typically consist of multiple air data computers, each equipped with dedicated air sensors such as a total pressure sensor, a static pressure sensor, and a total temperature sensor. During operation, a heating control box controls and monitors the heating status of each air sensor.

[0003] However, a potential safety hazard exists in the actual use of the air data system: when an aircraft is powered on for the first time after a long period of inactivity, the protective covers used to protect the total pressure and static pressure sensors may cause internal pressure buildup. This abnormal pressure state may trigger the preset automatic heating logic within the air data computer. If ground crew fail to notice the heating function being activated during pre-flight preparation or maintenance, the air sensors will remain heated on the ground for an extended period. This will cause the surface temperature of the total pressure and static pressure sensors to rise continuously, significantly reducing their measurement reliability and lifespan, and in severe cases, potentially causing permanent damage due to overheating. Furthermore, the high temperature of the total pressure and static pressure sensors also poses a risk of burns to ground crew performing close-range maintenance, endangering their personal safety.

[0004] This application is made in view of the aforementioned technical deficiencies. Summary of the Invention

[0005] The purpose of this application is to provide an alarm system for abnormal temperature of atmospheric sensors on aircraft ground parking. Without increasing additional hardware costs, it can effectively and automatically detect abnormal high temperature conditions of atmospheric sensors on the ground and issue alarms in a timely manner by utilizing existing system resources, thereby realizing intelligent diagnosis and early warning of the risk of abnormal temperature of atmospheric sensors on aircraft ground parking.

[0006] An abnormal temperature alarm system for an aircraft ground parking atmospheric sensor includes a total pressure sensor, a static pressure sensor, a total temperature sensor, an atmospheric data computer, a central alarm computer, and a display control unit.

[0007] There are multiple sets of total pressure sensor, static pressure sensor, and total temperature sensor;

[0008] There are multiple atmospheric data computers, each connected to a set of total pressure sensors, static pressure sensors, and total temperature sensors. The total pressure is collected through these sensors. static pressure Total temperature ;

[0009] Each atmospheric data computer collects total pressure static pressure Calculate Mach number and indicated airspeed ;

[0010] Each atmospheric data computer collects total temperature data. And the calculated M number, and the calculated static temperature. ;

[0011] Each atmospheric data computer is connected to the central alarm computer, which calculates the indicated airspeed. Less than or equal to the ground airspeed threshold And the calculated static temperature Greater than or equal to the safe temperature threshold When this occurs, an abnormal temperature alarm is triggered by the atmospheric sensor, which then transmits the abnormal temperature alarm information to the central alarm computer.

[0012] The central alarm computer is connected to the display control unit, which transmits atmospheric sensor temperature abnormality alarm information to the display control unit, and the display control unit displays the atmospheric sensor temperature abnormality alarm information.

[0013] According to at least one embodiment of this application, in the above-described aircraft ground parking atmospheric sensor temperature anomaly alarm system, each atmospheric data computer collects the total pressure... static pressure Calculate the M number, specifically:

[0014] When M ≤ 1, the following conditions are met: ;

[0015] When M > 1, the following conditions are met: .

[0016] According to at least one embodiment of this application, in the above-described aircraft ground parking atmospheric sensor temperature anomaly alarm system, each atmospheric data computer collects the total pressure... static pressure Calculate indicated airspeed Specifically:

[0017] When Mach number ≤ 1, calculate indicated airspeed. for:

[0018] ;

[0019] When Mach number > 1, calculate indicated airspeed. for:

[0020] ;

[0021] in,

[0022] Atmospheric pressure at sea level;

[0023] The speed of sound at sea level;

[0024] It represents the adiabatic index.

[0025] According to at least one embodiment of this application, in the above-described aircraft ground parking atmospheric sensor temperature anomaly alarm system, the sea level standard atmospheric pressure Take 101.3 kPa.

[0026] According to at least one embodiment of this application, in the above-described aircraft ground parking atmospheric sensor temperature anomaly alarm system, the sea level standard speed of sound Take 340.294 m / s.

[0027] According to at least one embodiment of this application, in the above-described aircraft ground parking atmospheric sensor temperature anomaly alarm system, the adiabatic index... Take 1.4.

[0028] According to at least one embodiment of this application, in the above-described aircraft ground parking atmospheric sensor temperature anomaly alarm system, each atmospheric data computer collects the total temperature... And the calculated M number, and the calculated static temperature. Specifically:

[0029] .

[0030] According to at least one embodiment of this application, in the above-described aircraft ground parking atmospheric sensor temperature anomaly alarm system, the ground airspeed threshold... Take 55 km / h;

[0031] According to at least one embodiment of this application, in the above-described aircraft ground parking atmospheric sensor temperature anomaly alarm system, the safe temperature threshold is... Set the temperature to 80℃.

[0032] According to at least one embodiment of this application, in the above-described aircraft ground parking atmospheric sensor temperature anomaly alarm system, each atmospheric data computer is connected to the central alarm computer via a bus.

[0033] The central alarm computer is connected to the display control unit via a bus.

[0034] According to at least one embodiment of this application, in the above-mentioned aircraft ground parking atmospheric sensor temperature abnormality alarm system, the display control unit is connected to the atmospheric sensor heating control box. When receiving atmospheric sensor temperature abnormality alarm information, the display control unit controls the atmospheric sensor heating control box to disconnect the heating of the corresponding atmospheric sensor of the corresponding atmospheric data computer.

[0035] According to at least one embodiment of this application, in the above-described aircraft ground parking atmospheric sensor temperature abnormality alarm system, when the display control unit receives the attention-level alarm information, it controls the atmospheric sensor heating control box to disconnect the heating of all atmospheric sensors corresponding to the atmospheric data computer.

[0036] This application has at least the following beneficial technical effects:

[0037] This invention provides an alarm system for abnormal temperature of atmospheric sensors on aircraft ground parking. Without increasing additional hardware costs, it utilizes existing system resources to effectively and automatically detect abnormally high temperatures of atmospheric sensors on the ground and issue timely alarms, thereby achieving intelligent diagnosis and early warning of the risk of abnormal temperature of atmospheric sensors on aircraft ground parking. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the aircraft ground parking atmospheric sensor temperature abnormality alarm system provided in the embodiments of this application.

[0039] To better illustrate this embodiment, some content in the accompanying drawings may be omitted, enlarged, or reduced. They are for illustrative purposes only and should not be construed as limiting the scope of this application. Detailed Implementation

[0040] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, and other related parts can be referred to the general design.

[0041] Furthermore, unless otherwise defined, the technical or scientific terms used in this application description shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The word "comprising" as used in this application description indicates that the concept preceding the word encompasses the concepts listed following the word and their equivalents, without excluding other related concepts.

[0042] Furthermore, the terms indicating location used in the description of this application are only used to indicate relative directions or positional relationships. When the absolute position of the described object changes, its relative positional relationship may also change accordingly. It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation" and "connection" used in the description of this application should be interpreted broadly. For example, a connection can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.

[0043] An alarm system for abnormal temperature readings from an atmospheric sensor, such as Figure 1 As shown, it includes a total pressure sensor, a static pressure sensor, a total temperature sensor, an atmospheric data computer, a central alarm computer, and a display control unit.

[0044] There are multiple sets of total pressure sensors, static pressure sensors, and total temperature sensors.

[0045] There are multiple atmospheric data computers, each connected to a set of total pressure sensors, static pressure sensors, and total temperature sensors. The total pressure is collected through these sensors. static pressure Total temperature .

[0046] Each atmospheric data computer collects total pressure static pressure Calculate Mach number and indicated airspeed .

[0047] When M ≤ 1, the following conditions are met: ;

[0048] When M > 1, the following conditions are met: .

[0049] When Mach number ≤ 1, calculate indicated airspeed. for:

[0050] ;

[0051] When Mach number > 1, calculate indicated airspeed. for:

[0052] ;

[0053] in,

[0054] The standard atmospheric pressure at sea level is typically taken as 101.3 kPa.

[0055] The speed of sound at sea level is typically taken as 340.294 m / s;

[0056] The adiabatic index is usually taken as 1.4.

[0057] Each atmospheric data computer collects total temperature data. And the calculated M number, and the calculated static temperature. .

[0058] .

[0059] The total pressure sensor, static pressure sensor, total temperature sensor, and atmospheric data computer are all configured with triple redundancy.

[0060] Each air data computer is connected to the central alarm computer via a bus, and the calculated indicated airspeed... Less than or equal to the ground airspeed threshold And the calculated static temperature Greater than or equal to the safe temperature threshold When this occurs, an abnormal temperature alarm from the atmospheric sensor is triggered, which in turn transmits the abnormal temperature alarm information from the atmospheric sensor to the central alarm computer.

[0061] Ground airspeed threshold A speed of 55 km / h is typically acceptable, as is the safe temperature threshold. A temperature of 80℃ is usually suitable.

[0062] The central alarm computer is connected to the display control unit via a bus, transmitting atmospheric sensor temperature anomaly alarm information to the display control unit. The display control unit then displays the atmospheric sensor temperature anomaly alarm information to alert the pilot or ground crew.

[0063] When the central alarm computer receives two or more abnormal temperature alarm messages from the atmospheric sensors, it triggers a warning-level alarm and transmits the warning-level alarm information to the display control unit. The display control unit displays the warning-level alarm information to prompt the crew or ground personnel to disconnect the atmospheric sensor heating to avoid damage to the atmospheric sensors or injury to personnel due to delayed detection.

[0064] The display control unit is connected to the atmospheric sensor heating control box. When it receives an alarm message about an abnormal temperature from the atmospheric sensor, it controls the atmospheric sensor heating control box to disconnect the heating of the corresponding atmospheric sensor to the corresponding atmospheric data computer.

[0065] When the display control unit receives a warning-level alarm message, it controls the atmospheric sensor heating control box to disconnect the heating of all atmospheric sensors corresponding to the atmospheric data computer.

[0066] The technical solution of this application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. An abnormal temperature alarm system for an aircraft ground-based atmospheric sensor, characterized in that, It includes a total pressure sensor, a static pressure sensor, a total temperature sensor, an atmospheric data computer, a central alarm computer, and a display control unit; There are multiple sets of total pressure sensor, static pressure sensor, and total temperature sensor; There are multiple atmospheric data computers, each connected to a set of total pressure sensors, static pressure sensors, and total temperature sensors. The total pressure is collected through these sensors. static pressure Total temperature ; Each atmospheric data computer collects total pressure static pressure Calculate Mach number and indicated airspeed ; Each atmospheric data computer collects total temperature data. And the calculated M number, and the calculated static temperature. ; Each atmospheric data computer is connected to the central alarm computer, which calculates the indicated airspeed. Less than or equal to the ground airspeed threshold And the calculated static temperature Greater than or equal to the safe temperature threshold When this occurs, an abnormal temperature alarm is triggered by the atmospheric sensor, which then transmits the abnormal temperature alarm information to the central alarm computer. The central alarm computer is connected to the display control unit, which transmits atmospheric sensor temperature abnormality alarm information to the display control unit, and the display control unit displays the atmospheric sensor temperature abnormality alarm information.

2. The aircraft ground parking atmospheric sensor temperature anomaly alarm system according to claim 1, characterized in that, Each atmospheric data computer collects total pressure static pressure Calculate the M number, specifically: When M ≤ 1, the following conditions are met: ; When M > 1, the following conditions are met: .

3. The aircraft ground parking atmospheric sensor temperature anomaly alarm system according to claim 2, characterized in that, Each atmospheric data computer collects total pressure static pressure Calculate indicated airspeed Specifically: When Mach number ≤ 1, calculate indicated airspeed. for: ； When Mach number > 1, calculate indicated airspeed. for: ； in, Atmospheric pressure at sea level; The speed of sound at sea level; It represents the adiabatic index.

4. The aircraft ground parking atmospheric sensor temperature abnormality alarm system according to claim 3, characterized in that, sea ​​level standard atmospheric pressure Take 101.3 kPa.

5. The aircraft ground parking atmospheric sensor temperature anomaly alarm system according to claim 4, characterized in that, The speed of sound at sea level Take 340.294 m / s.

6. The aircraft ground parking atmospheric sensor temperature abnormality alarm system according to claim 5, characterized in that, Insulation Index Take 1.

4.

7. The aircraft ground parking atmospheric sensor temperature abnormality alarm system according to claim 6, characterized in that, Each atmospheric data computer collects total temperature data. And the calculated M number, and the calculated static temperature. Specifically: 。 8. The aircraft ground parking atmospheric sensor temperature abnormality alarm system according to claim 7, characterized in that, Ground airspeed threshold Take 55 km / h.

9. The aircraft ground parking atmospheric sensor temperature abnormality alarm system according to claim 8, characterized in that, Safe temperature threshold Set the temperature to 80℃.

10. The aircraft ground parking atmospheric sensor temperature anomaly alarm system according to claim 9, characterized in that, Each atmospheric data computer is connected to the central alarm computer via a bus; The central alarm computer is connected to the display control unit via a bus.

11. The aircraft ground parking atmospheric sensor temperature anomaly alarm system according to claim 10, characterized in that, The display control unit is connected to the atmospheric sensor heating control box. When it receives an alarm message about an abnormal temperature from the atmospheric sensor, it controls the atmospheric sensor heating control box to disconnect the heating of the corresponding atmospheric sensor to the corresponding atmospheric data computer.

12. The aircraft ground parking atmospheric sensor temperature anomaly alarm system according to claim 11, characterized in that, When the display control unit receives a warning-level alarm message, it controls the atmospheric sensor heating control box to disconnect the heating of all atmospheric sensors corresponding to the atmospheric data computer.

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