Accuracy detection device for air data module

Abstract

The embodiment of the present invention provides an accuracy detection device for an atmospheric data module, which relates to the field of aviation maintenance technology. The device includes: a data acquisition interface, which is used to connect to the atmospheric data module and obtain atmospheric data from the atmospheric data module; a human-computer interaction module, which is configured to: display a first interface when simulating a ground environment, and display a second interface when simulating a flight environment; a data processing module, which is configured to: display the acquired atmospheric data in the first atmospheric data display unit in response to a read instruction when simulating a ground environment, and obtain the accuracy verification result and display it in the first verification result display unit; display the acquired atmospheric data in the second atmospheric data display unit in response to a read instruction when simulating a flight environment, and obtain the accuracy verification result and display it in the second verification result display unit. The implementation method provided by the present invention improves the troubleshooting efficiency of the atmospheric data module.

Description

Technical Field

[0001] The invention relates to the technical field of aviation maintenance, and in particular to an accuracy detection device for an air data module. Background Art

[0002] Airbus aircraft are equipped with multiple atmospheric data modules for measuring total pressure and static pressure. After long-term use, the accuracy of the modules will decrease, resulting in deviations in the total pressure and static pressure values ​​detected by the aircraft. During flight, the crew will find that the aircraft's altitude and airspeed display are inconsistent with the actual values, causing the aircraft to be grounded for troubleshooting and delaying the flight. Currently, there is no efficient method or equipment to detect the accuracy of the atmospheric data modules installed on the aircraft on the wing. The atmospheric data modules need to be replaced manually one by one, and a series of tests must be completed before the fault can be confirmed, which is very time-consuming and labor-intensive. In addition, the installation of new aviation materials will also result in low quality of rework, and it is impossible to confirm whether the accuracy of the new aviation materials meets the standards, which will cause certain interference to the aircraft troubleshooting work. Summary of the invention

[0003] The purpose of an embodiment of the present invention is to provide an accuracy detection device for an atmospheric data module, which is directly connected to the atmospheric data module of an aircraft through a portable device, collects data sent by the atmospheric data module, and then calculates the real data of the atmospheric data module under real-time airport corrected sea level pressure through a certain algorithm. After comparison, it is confirmed whether the atmospheric data module meets the installation requirements, so as to at least solve some of the problems in the background technology.

[0004] In order to achieve the above-mentioned purpose, the present invention provides an accuracy detection device for an atmospheric data module, the device comprising: a data acquisition interface, used to connect to the atmospheric data module and obtain atmospheric data from the atmospheric data module; a human-computer interaction module, configured to: display a first interface when simulating a ground environment, the first interface comprising a position parameter input unit, a first atmospheric data display unit and a first verification result display unit; display a second interface when simulating a flight environment, the second interface comprising a simulation data input unit, a second atmospheric data display unit and a second verification result display unit; a data processing module, configured to: display the acquired atmospheric data in the first atmospheric data display unit in response to a read instruction when simulating a ground environment, and obtain an accuracy verification result based on the atmospheric data and the position parameter obtained by the position parameter input unit in response to a verification instruction, and display it in the first verification result display unit; display the acquired atmospheric data in the second atmospheric data display unit in response to a read instruction when simulating a flight environment, and obtain an accuracy verification result based on the atmospheric data and the simulation data obtained by the simulation data input unit in response to a verification instruction, and display it in the second verification result display unit.

[0005] Optionally, the location parameters acquired by the location parameter input unit include airport corrected sea level pressure data and airport elevation data; in response to the verification instruction, an accuracy verification result is obtained based on the atmospheric data and the location parameters acquired by the location parameter input unit, including: calculating the air pressure standard value according to the airport corrected sea level pressure data and the airport elevation data; obtaining the current airport elevation accuracy range according to the air pressure standard value and the single module accuracy requirement; judging whether the atmospheric data is within the current airport elevation accuracy range, and using the judgment result as the accuracy verification result.

[0006] Optionally, the location parameters acquired by the location parameter input unit include airport corrected sea level pressure data and airport elevation data; the atmospheric data comes from multiple atmospheric data modules; in response to the verification instruction, an accuracy verification result is obtained based on the atmospheric data and the location parameters acquired by the location parameter input unit, including: calculating the air pressure standard value according to the airport corrected sea level pressure data and the airport elevation data; obtaining the current airport elevation accuracy range according to the air pressure standard value and the multi-module accuracy requirements; selecting a target atmospheric data module from the multiple atmospheric data modules, and correcting the current airport elevation accuracy range with the atmospheric data corresponding to the target atmospheric data module; judging whether the atmospheric data is within the corrected current airport elevation accuracy range, and using the judgment result as the accuracy verification result.

[0007] Optionally, the location parameters acquired by the location parameter input unit include airport corrected sea level pressure data and airport elevation data; the atmospheric data comes from multiple atmospheric data modules; in response to the verification instruction, an accuracy verification result is obtained based on the atmospheric data and the location parameters acquired by the location parameter input unit, including: calculating the air pressure standard value according to the airport corrected sea level pressure data and the airport elevation data; obtaining the current airport elevation accuracy range according to the air pressure standard value and the multi-module accuracy requirements; selecting a target atmospheric data module from the multiple atmospheric data modules, and correcting the current airport elevation accuracy range with the atmospheric data corresponding to the target atmospheric data module; comparing the multiple atmospheric data corresponding to the multiple atmospheric data modules with the corrected current airport elevation accuracy range in turn, and counting the number of times the accuracy exceeds the standard in the comparison result; judging whether the counting result exceeds a preset counting threshold, and using the judgment result as the accuracy verification result.

[0008] Optionally, the standard value of air pressure is calculated based on the airport corrected sea level pressure data and the airport elevation data, including:

[0009]

[0010] Among them, g(H) is the standard value of air pressure, H is the elevation, P 0 is the standard sea level pressure value, k is the sampling accuracy, H机场标高 is the airport elevation data, QNH hpa Corrected sea level pressure data for airports.

[0011] Optionally, the device also includes a pressure output module; before simulating the flight environment, a dedicated pipeline is used to connect the pressure output module to the pressure input part of the atmospheric data module, the pressure output module stops after outputting a preset pressure, and the pressure change after a preset time is read. When the pressure change is less than a preset threshold, the simulated flight environment is started.

[0012] Optionally, the simulation data acquired by the simulation data input unit includes a simulated flight altitude; in response to a verification instruction, an accuracy verification result is obtained based on the atmospheric data and the simulation data acquired by the simulation data input unit, including: outputting the pressure value corresponding to the simulated flight altitude to the atmospheric data module, and obtaining the atmospheric data output by the atmospheric data module after the pressure value is stabilized; calculating the air pressure standard value based on the corrected sea level pressure data and the simulated flight altitude; obtaining the accuracy range of the current altitude based on the accuracy requirements corresponding to the air pressure standard value and the simulated flight altitude; and judging whether the atmospheric data is within the accuracy range of the current altitude, and using the judgment result as the accuracy verification result.

[0013] Optionally, the standard air pressure value is calculated based on the corrected sea level pressure data and the simulated flight altitude, including: when the corrected sea level pressure data is greater than a preset air pressure value or the simulated flight altitude is not greater than a preset altitude, the standard air pressure value is calculated in the following manner:

[0014] ;

[0015] When the corrected sea level pressure data is not greater than the preset pressure value or the simulated flight altitude is greater than the preset altitude, the standard pressure value is calculated in the following way:

[0016] ;

[0017] in, is the standard value of air pressure at height H, P 0 is the standard sea level pressure value, H is the simulated flight altitude, and k is the sampling accuracy.

[0018] Optionally, the simulation data acquired by the simulation data input unit includes a simulated airspeed; in response to a verification instruction, an accuracy verification result is obtained based on the atmospheric data and the simulation data acquired by the simulation data input unit, including: grouping multiple atmospheric data modules, and determining the total pressure value corresponding to each group of atmospheric data modules according to the simulated airspeed, static pressure and altitude conditions; outputting the pressure corresponding to the total pressure value to the atmospheric data module in groups, and acquiring the atmospheric data output by the atmospheric data module after the pressure value stabilizes; determining the airspeed threshold range according to the simulated airspeed, and judging whether the atmospheric data is within the airspeed threshold range, and using the judgment result as the accuracy verification result.

[0019] Optionally, determining the airspeed threshold range according to the simulated airspeed includes: determining the range of the simulated airspeed, calculating the upper and lower limits of the range of the simulated airspeed according to the following formula to obtain the upper and lower limits of the airspeed threshold, and obtaining the airspeed threshold range according to the upper and lower limits of the airspeed threshold;

[0020]

[0021] in, is the airspeed threshold, P 0 is the standard sea level pressure value, k is the sampling accuracy, v To simulate airspeed, v cso is the standard airspeed; the total pressure value corresponding to each set of atmospheric data modules is determined according to the simulated airspeed, static pressure and altitude conditions, including:

[0022]

[0023] Wherein, P is the total pressure value and H is the conditional altitude during calibration.

[0024] The above technical solution has the following beneficial effects:

[0025] (1) The theoretical accuracy value of the standard atmospheric data module output can be calculated based on the airport corrected sea level pressure value and the airport elevation. The theoretical accuracy value of the standard atmospheric data module can also be calculated by simulating different flight altitudes. By comparing it with the actual value collected by the atmospheric data module, it can be determined in a short time whether the airborne atmospheric data module has a large accuracy deviation problem.

[0026] (2) It can also compare multiple air data modules and quickly identify the air data module with excessive deviation. It can quickly help maintenance personnel to identify faults. Finally, the portable device is small and light, and can be directly connected to the onboard air data module to complete the inspection on the wing without disassembling any aircraft parts, reducing the workload of maintenance personnel.

[0027] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings:

[0029] Figure 1 is a schematic diagram of a first interface when simulating a ground environment provided by an embodiment of the present invention;

[0030] Figure 2 is a schematic diagram of a second interface when simulating a flight environment provided by an embodiment of the present invention;

[0031] Figure 3 is a structural schematic diagram of an accuracy detection device for an air data module in an embodiment of the present invention;

[0032] Figure 4 is a schematic diagram of the appearance of a portable device provided by an embodiment of the present invention;

[0033] Figure 5 is a schematic diagram of the structure of a power module provided by an embodiment of the present invention;

[0034] Figure 6 It is a working flow chart of the accuracy detection device of the atmospheric data module provided by the embodiment of the present invention. DETAILED DESCRIPTION

[0035] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0036] This embodiment provides an accuracy detection device for an air data module, the device comprising:

[0037] A data acquisition interface is used to connect to the atmospheric data module and obtain atmospheric data from the atmospheric data module; a human-computer interaction module is configured to: display a first interface when simulating a ground environment, the first interface includes a position parameter input unit, a first atmospheric data display unit and a first verification result display unit; display a second interface when simulating a flight environment, the second interface includes a simulation data input unit, a second atmospheric data display unit and a second verification result display unit; a data processing module is configured to: display the acquired atmospheric data in the first atmospheric data display unit in response to a read instruction when simulating a ground environment, and obtain an accuracy verification result based on the atmospheric data and the position parameter obtained by the position parameter input unit in response to a verification instruction, and display it in the first verification result display unit; display the acquired atmospheric data in the second atmospheric data display unit in response to a read instruction when simulating a flight environment, and obtain an accuracy verification result based on the atmospheric data and the simulation data obtained by the simulation data input unit in response to a verification instruction, and display it in the second verification result display unit.

[0038] This application uses an embedded computer to complete human-computer interaction. The interactive interface can select the simulated ground environment and flight environment according to the needs. Figure 1 and Figure 2 As shown. Maintenance personnel and other users can input the airport elevation, sampling accuracy and airport corrected sea level pressure value through the first interface or the second interface, and select the airborne atmospheric data module that needs to be measured. The parameters collected by the airborne atmospheric data module and the airport corrected sea level pressure data acquisition module are displayed in real time and recorded in the corresponding dialog box. In this way, it is possible to determine in a short time whether there is a problem of large accuracy deviation in the airborne atmospheric data module. When the deviation exceeds the standard range, an alarm message can be displayed on the first interface or the second interface or a fault light can be turned on to remind maintenance personnel that the accuracy of the atmospheric data module exceeds the standard and needs to be replaced. The first interface and the second interface of the present application correspond to the simulated ground environment and the simulated flight environment, respectively, and can be directly connected to the airborne atmospheric data module to complete the detection on the wing without disassembling any aircraft components, thereby reducing the workload of maintenance personnel.

[0039] Figure 1 is a schematic diagram of the first interface when simulating a ground environment provided by an embodiment of the present invention. Figure 1As shown, the first atmospheric data display unit is distinguished according to the layout position of the atmospheric data module, and is displayed as the captain's total pressure ADM, the co-pilot's total pressure ADM, the standby total pressure ADM, etc. The airport altitude or corrected sea level pressure on the right side of the position parameter input unit provides the airport corrected sea level pressure input value in the human-computer interaction interface. When the airport corrected sea level pressure sampling module fails or the data deviates, the airport data is manually input to the data processing module sampling accuracy, etc. The sampling accuracy k can be set to 1 / 128 and 1 / 32, and the sampling value is converted to a decimal DATABIT value.

[0040] Figure 2 is a schematic diagram of the second interface when simulating a flight environment provided by an embodiment of the present invention. Figure 2 As shown, the second atmospheric data display unit is set up similarly to the first atmospheric data display unit, but its simulation data input unit includes a simulated flight altitude and a simulated specific airspeed on the right, thereby realizing airspeed simulation based on user input and atmospheric data module accuracy detection.

[0041] Figure 3 Schematic diagram of the structure of the accuracy detection device of the air data module in the present invention. Figure 3 As shown, it includes a data acquisition module, which is connected to the atmospheric data module through the aforementioned data acquisition interface, and the atmospheric data module here is preferably an airborne atmospheric data module. The atmospheric data module transmits data back to the data acquisition module through the ARINC429 bus. The data acquisition module is connected to the data processing module, and the data processing module is connected to the human-computer interaction module, and the human-computer interaction module is used to display the aforementioned first interface and second interface. The data processing module also controls the pressure output module to input air pressure to the airborne atmospheric data module for precision measurement. The data acquisition module is also connected to the pressure sensing module to obtain the current pressure collected by the pressure sensing module. The data acquisition module is also connected to the corrected sea level pressure data acquisition module to obtain the corrected sea level pressure data. The power module supplies power to each module in the precision detection device of the atmospheric data module.

[0042] Figure 4 FIG. 1 is a schematic diagram of the appearance of a portable device provided by an embodiment of the present invention. Figure 4 As shown, the accuracy detection device of the air data module in this embodiment is a portable instrument, which is convenient for maintenance personnel to measure on site. At the same time, the portable device is small and light, and can be directly connected to the airborne air data module to complete the detection on the wing.

[0043] Due to the portability of the accuracy detection device of the air data module, the power supply mode of the device is mainly battery-powered, such as Figure 5 shown. Figure 5This is a schematic diagram of the structure of the power module provided by an embodiment of the present invention. The battery converts the voltage into ±13VDC / 24VDC / 5VDC through a voltage divider circuit to meet the power supply requirements of the airborne atmospheric data module, human-computer interaction module, pressure output module, and pressure and airport-corrected sea level pressure acquisition module. The battery pack is charged by an external 220VAC / 50Hz power supply. As a backup solution for battery failure or battery failure, the device uses the aircraft power supply as a backup power supply, and converts the aircraft's 115VAC / 400Hz power supply into ±13VDC / 24VDC / 5VDC through a transformer-rectifier circuit to power the device.

[0044] Figure 6 : is a flowchart of the accuracy detection device of the air data module provided by the embodiment of the present invention. Figure 6 As shown, in some embodiments of the present application, the use of the accuracy detection device of the atmospheric data module includes the following steps: the power supply system supplies power to each module, the airborne atmospheric data module collects data, the corrected sea level pressure data is collected, the ground environment is simulated for data verification, the flight environment is simulated for data verification, and the results are displayed in the human-computer interaction module.

[0045] In some embodiments of the present application, the location parameters obtained by the location parameter input unit include airport corrected sea level pressure data and airport elevation data; in response to the verification instruction, an accuracy verification result is obtained based on the atmospheric data and the location parameters obtained by the location parameter input unit, including: calculating the standard air pressure value according to the airport corrected sea level pressure data and the airport elevation data; obtaining the current airport elevation accuracy range according to the air pressure standard value and the single module accuracy requirement; judging whether the atmospheric data is within the current airport elevation accuracy range, and using the judgment result as the accuracy verification result. Exemplarily, when simulating the ground environment, the accuracy of the atmospheric data module is checked. After the data processing module receives the sampled data, it calculates the standard DATABIT value corresponding to the atmospheric data module according to the airport corrected sea level pressure data and the airport elevation data according to the following formula:

[0046] (1)

[0047] Among them, g(H) is the standard value of air pressure, H is the elevation, P 0 is the standard sea level pressure value, which can be 1013.25hPa. k is the sampling accuracy, H 机场标高 is the airport elevation data, QNH hpa Corrected sea level pressure data for airports. DATABIT is the value of g(H) converted to decimal.

[0048] The steps for measuring the accuracy of a single atmospheric data module include: based on the manual's accuracy requirements for a single atmospheric data module, the measurement altitude must not be higher than ±75ft of the standard value. The following are the data processing steps: (1) Collecting atmospheric data from the atmospheric data module; (2) Calculating the standard value of the current airport's corrected sea level pressure and altitude g(H) according to formula (1) 1 );(3)Calculate the current airport elevation accuracy range R 1 =g(H 1 ±75); (4) Check the collected atmospheric data and R 1 Compare; (5) transmit the comparison result to the first interface in the human-computer interaction module.

[0049] In some embodiments of the present application, the location parameters acquired by the location parameter input unit include airport corrected sea level pressure data and airport elevation data; the atmospheric data comes from multiple atmospheric data modules; in response to the verification instruction, the accuracy verification result is obtained based on the atmospheric data and the location parameters acquired by the location parameter input unit, including: calculating the standard value of air pressure according to the airport corrected sea level pressure data and the airport elevation data; obtaining the current airport elevation accuracy range according to the standard value of air pressure and the multi-module accuracy requirements; selecting a target atmospheric data module from the multiple atmospheric data modules, and correcting the current airport elevation accuracy range with the atmospheric data corresponding to the target atmospheric data module; judging whether the atmospheric data is within the corrected current airport elevation accuracy range, and using the judgment result as the accuracy verification result. This embodiment provides accuracy measurement of multiple atmospheric data modules. Since the atmospheric data module involves data matching, the manual requires the accuracy of multiple atmospheric data modules to be higher than that of a single module. The height difference of multiple atmospheric data modules shall not exceed ±20ft. Therefore, it is necessary to compare each atmospheric data module in pairs. The following data processing steps include: (1) collecting atmospheric data from multiple airborne atmospheric data modules; (2) calculating the standard value of the current airport corrected sea level pressure and altitude g(H) according to formula (1). 2 );(3)Calculate the current airport elevation accuracy range g(H 2 ±20); (4) Take the measured atmospheric data module data as the reference value c and set the accuracy range R 2 =g(H 2 -20) <c<g(H 2 +20); (5) other atmospheric data module sampling values ​​and R 2 Compare; (6) transmit the comparison result to the first interface in.

[0050] In some embodiments of the present application, the location parameters obtained by the location parameter input unit include airport corrected sea level pressure data and airport elevation data; the atmospheric data comes from multiple atmospheric data modules; in response to the verification instruction, the accuracy verification result is obtained based on the atmospheric data and the location parameters obtained by the location parameter input unit, including: calculating the standard value of air pressure according to the airport corrected sea level pressure data and the airport elevation data; obtaining the current airport elevation accuracy range according to the standard value of air pressure and the multi-module accuracy requirements; selecting a target atmospheric data module from the multiple atmospheric data modules, and correcting the current airport elevation accuracy range with the atmospheric data corresponding to the target atmospheric data module; comparing the multiple atmospheric data corresponding to the multiple atmospheric data modules with the corrected current airport elevation accuracy range in turn, and counting the number of times the accuracy exceeds the standard in the comparison result; judging whether the counting result exceeds the preset counting threshold, and using the judgment result as the accuracy verification result. This embodiment provides a fast comparison among multiple atmospheric data modules. In order to facilitate maintenance personnel to quickly compare modules with large differences in accuracy, the data processing steps provided in this embodiment include: (1) collecting atmospheric data from multiple airborne atmospheric data modules; (2) calculating the standard value g(H) of the corrected sea level pressure and altitude of the current airport according to formula (1); 3 );(3)Calculate the current airport elevation accuracy range g(H 3 ±20); (4) Take each collected atmospheric data module as the reference c1, c2...ci, and set the accuracy range R 3i =g(H 3 -20) <c i <g(H 3 +20); (5) Compare all the atmospheric data module data in turn and get D={d ij ∣d ij =|c i −c j ∣, c i ∈H, c j ∈V, i, j=1,2,...,n}; (6) When the accuracy exceeds the standard |d ij |>R 3i When the number of air data modules exceeds half of the total number of air data modules, the signal is transmitted to the human-computer interaction module. The setting value of half is adjustable.

[0051] In some embodiments of the present application, the device further comprises a pressure output module; before simulating the flight environment, a dedicated pipeline is used to connect the pressure output module to the pressure input part of the atmospheric data module, the pressure output module stops after outputting a preset pressure, and the pressure change after a preset time is read. When the pressure change is less than a preset threshold, the simulated flight environment is started. When simulating the flight environment, a pressure output module is required to simulate a certain ambient pressure to detect the accuracy of the atmospheric data module. Prior to this, an airtightness test is required, which includes the following steps: first, a dedicated pipeline is used to connect the instrument and the pressure input part of the airborne atmospheric data module, and an airtightness test is performed. The data processing module stops after the pressure output module outputs a pressure of 150hPa, and the pressure value change after 10 minutes is read. If the change is less than ±0.4hPa, the simulated flight environment test can be entered.

[0052] In some embodiments of the present application, the simulation data obtained by the simulation data input unit includes a simulated flight altitude; in response to the verification instruction, the precision verification result is obtained based on the atmospheric data and the simulation data obtained by the simulation data input unit, including: outputting the pressure value corresponding to the simulated flight altitude to the atmospheric data module, and obtaining the atmospheric data output by the atmospheric data module after the pressure value is stable; calculating the standard value of the air pressure according to the corrected sea level pressure data and the simulated flight altitude; obtaining the accuracy range of the current altitude according to the accuracy requirements corresponding to the standard value of the air pressure and the simulated flight altitude; judging whether the atmospheric data is within the accuracy range of the current altitude, and using the judgment result as the precision verification result. The precision detection device of the atmospheric data module is used to simulate the flight environment and measure the accuracy of the atmospheric data module. The maintenance personnel input different flight altitude values ​​through the human-machine interface, and the data processing module calculates the air pressure value of the flight altitude under the corrected sea level pressure, and controls the pressure output module to output the pressure to the airborne atmospheric data module. The pressure sensing module is used as a negative feedback signal, and the pressure output module stops working when the target pressure value is reached. The data processing module calculates the standard value under the flight state, and the calculation method is:

[0053] When the corrected sea level pressure is >226.323hPa, the method for calculating the standard value of DATABIT is:

[0054] (2)

[0055] When the corrected sea level pressure is ≤226.323hPa, the method for calculating the standard value of DATABIT is:

[0056] (3)

[0057] Among them, P 0is the standard sea level pressure value, H is the simulated flight altitude, and k is the sampling accuracy. The data processing steps include: (1) obtaining the set flight altitude and calculating the pressure value of the set flight altitude; (2) controlling the pressure output module, such as the vacuum pump output pressure value, and starting to receive data from the atmospheric data module after the pressure value is stable for more than 10s; (3) when the flight altitude is ≤30000ft, use formula (2) to calculate the standard value of air pressure; (4) when the received data exceeds the standard value ±90, the judgment result is transmitted to the second interface in the human-computer interaction module; (5) when the flight altitude is >30000ft, use formula (3) to calculate the standard value of air pressure; (6) when the received data exceeds the standard value ±90, the judgment result is transmitted to the second interface in the human-computer interaction module.

[0058] When simulating the flight environment, the atmospheric data of multiple atmospheric data modules are matched. The corresponding flight altitudes are 5000ft / 10000ft / 20000ft / 30000ft / 39000ft, and the data difference of each atmospheric data module should not exceed 50ft / 55ft / 90ft / 130ft / 130ft. The data processing steps include: (1) Obtaining the set flight altitude and calculating the pressure value of the set flight altitude, and determining the allowable deviation Δh according to the altitude value i ; (2) Control the pressure output module, such as the vacuum pump output pressure value. When the pressure value is stable for more than 10 seconds, start receiving the data from the atmospheric data module; (3) When the flight altitude is ≤30000ft, calculate the deviation value f(H±Δh i );(4)When the flight altitude is greater than 30000ft, the deviation value f(H±Δh is calculated by formula (3) i );(5)Use the measured atmospheric data module data as the reference value d and set the accuracy range R 4 =f(H-Δh i ) <d<f(H+Δh i );(6)Other atmospheric data module sampling values ​​and R 4 Compare; (7) transmit the judgment result to the second interface in the human-computer interaction module.

[0059] In some embodiments of the present application, a method for verifying the accuracy of airspeed is also provided. The simulation data obtained by the simulation data input unit includes the simulated airspeed; in response to the verification instruction, the accuracy verification result is obtained based on the atmospheric data and the simulation data obtained by the simulation data input unit, including: grouping multiple atmospheric data modules, and determining the total pressure value corresponding to each group of atmospheric data modules according to the simulated airspeed, static pressure and altitude conditions; outputting the pressure corresponding to the total pressure value to the atmospheric data module in groups, and obtaining the atmospheric data output by the atmospheric data module after the pressure value is stable; determining the airspeed threshold range according to the simulated airspeed, judging whether the atmospheric data is within the airspeed threshold range, and using the judgment result as the accuracy verification result. Based on the previous embodiment, 8 airborne atmospheric data modules construct a total of three groups of airspeed data, and each group of airspeed data needs to match each other. To ensure the consistency of each group of data, multiple sets of data buses and pressure lines are required, which are respectively connected to each group of atmospheric data modules. The formula for calculating the total pressure is as follows:

[0060] (4)

[0061] The pressure output module uses formula (4) to output pressure to the total pressure atmospheric data module based on the airspeed value set by the maintenance personnel and the calibration condition altitude. At the same time, the static pressure atmospheric data module outputs the static pressure. The data processing module calculates the DATABIT standard value of the total pressure atmospheric data module. The method for calculating the standard value is:

[0062] (5)

[0063] By using formula (5), the threshold error range f( v ±Δ v i ), when the input data of the airborne atmospheric data module exceeds the threshold range, the judgment result is transmitted to the human-computer interaction module. The range of the simulated airspeed is determined as v ±Δ v i , set the upper and lower limits of the simulated airspeed range v +Δ v i and v -Δ v i The upper and lower limits of the airspeed threshold are calculated according to formula (5), and the airspeed threshold range is obtained according to the upper and lower limits of the airspeed threshold.

[0064] Among them, P 0 is the standard sea level pressure value, k is the sampling accuracy, v To simulate airspeed, v cso is the standard airspeed; H is the conditional altitude during calibration.

[0065] If maintenance personnel use the precision detection device of the air data module to sample multiple air data modules, the human-computer interaction module can display the data sampling value of each position, and maintenance personnel can choose to quickly compare, and the dialog box of the module with large data difference in the air data module is highlighted. You can also choose to compare one by one. When the numerical deviation between the air data modules is too large, the digital display dialog box of the corresponding module is highlighted in yellow, and the digital display dialog box of the air data module with the largest difference from the standard value is highlighted in red to remind maintenance personnel to pay attention.

[0066] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0067] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. An accuracy detection device for an air data module, characterized in that: The device includes: A data acquisition interface, used to connect to the atmospheric data module and obtain atmospheric data from the atmospheric data module; The human-computer interaction module is configured to: display a first interface when simulating a ground environment, the first interface including a position parameter input unit, a first atmospheric data display unit, and a first verification result display unit; display a second interface when simulating a flight environment, the second interface including a simulation data input unit, a second atmospheric data display unit, and a second verification result display unit; The data processing module is configured to: display the acquired atmospheric data on the first atmospheric data display unit in response to a read instruction when simulating a ground environment, and obtain an accuracy verification result based on the atmospheric data and the position parameter obtained by the position parameter input unit in response to a verification instruction, and display the result on the first verification result display unit; display the acquired atmospheric data on the second atmospheric data display unit in response to a read instruction when simulating a flight environment, and obtain an accuracy verification result based on the atmospheric data and the simulation data obtained by the simulation data input unit in response to a verification instruction, and display the result on the second verification result display unit; The position parameters acquired by the position parameter input unit include airport corrected sea level pressure data and airport elevation data; In response to the verification instruction, obtaining an accuracy verification result based on the atmospheric data and the position parameter obtained by the position parameter input unit includes: The standard value of air pressure is calculated based on the airport corrected sea level pressure data and airport elevation data; According to the standard value of air pressure and the single module accuracy requirement, the current airport elevation accuracy range is obtained; Determine whether the atmospheric data is within the current airport elevation accuracy range, and use the determination result as the accuracy verification result; The simulation data acquired by the simulation data input unit includes a simulated flight altitude; In response to the verification instruction, obtaining an accuracy verification result based on the atmospheric data and the simulation data obtained by the simulation data input unit, including: Output the pressure value corresponding to the simulated flight altitude to the atmospheric data module, and obtain the atmospheric data output by the atmospheric data module after the pressure value is stabilized; The standard value of air pressure is calculated based on the corrected sea level pressure data and simulated flight altitude; Obtaining the accuracy range of the current altitude according to the accuracy requirement corresponding to the standard value of the air pressure and the simulated flight altitude; Determine whether the atmospheric data is within the accuracy range of the current altitude, and use the determination result as the accuracy verification result; The simulation data acquired by the simulation data input unit includes simulation airspeed; In response to the verification instruction, obtaining an accuracy verification result based on the atmospheric data and the simulation data obtained by the simulation data input unit, including: The plurality of air data modules are grouped, and the total pressure value corresponding to each group of air data modules is determined according to the simulated airspeed, static pressure and altitude conditions; Output the pressure corresponding to the total pressure value to the atmospheric data module in groups, and obtain the atmospheric data output by the atmospheric data module after the pressure value is stabilized; An airspeed threshold range is determined according to the simulated airspeed, and it is determined whether the atmospheric data is within the airspeed threshold range, and the determination result is used as the accuracy verification result.

2. The device according to claim 1, characterized in that The position parameters acquired by the position parameter input unit include airport corrected sea level pressure data and airport elevation data; the atmospheric data comes from a plurality of atmospheric data modules; In response to the verification instruction, obtaining an accuracy verification result based on the atmospheric data and the position parameter obtained by the position parameter input unit includes: The standard value of air pressure is calculated based on the airport corrected sea level pressure data and airport elevation data; According to the standard value of air pressure and the multi-module accuracy requirement, the accuracy range of the current airport elevation is obtained; Selecting a target atmospheric data module from the plurality of atmospheric data modules, and correcting the current airport elevation accuracy range with the atmospheric data corresponding to the target atmospheric data module; It is determined whether the atmospheric data is within the corrected accuracy range of the current airport elevation, and the determination result is used as the accuracy verification result.

3. The device according to claim 1, characterized in that The position parameters acquired by the position parameter input unit include airport corrected sea level pressure data and airport elevation data; the atmospheric data comes from a plurality of atmospheric data modules; In response to the verification instruction, obtaining an accuracy verification result based on the atmospheric data and the position parameter obtained by the position parameter input unit includes: The standard value of air pressure is calculated based on the airport corrected sea level pressure data and airport elevation data; According to the standard value of air pressure and the multi-module accuracy requirement, the accuracy range of the current airport elevation is obtained; Selecting a target atmospheric data module from the plurality of atmospheric data modules, and correcting the current airport elevation accuracy range with the atmospheric data corresponding to the target atmospheric data module; Compare the multiple atmospheric data corresponding to the multiple atmospheric data modules with the corrected current airport elevation accuracy range in sequence, and count the number of times the accuracy exceeds the standard in the comparison result; Determine whether the counting result exceeds a preset counting threshold, and use the determination result as the accuracy verification result.

4. The device according to any one of claims 1 to 3, characterized in that The standard value of air pressure is calculated based on the airport corrected sea level pressure data and airport elevation data, including: Among them, g(H) is the standard value of air pressure, H is the elevation, P0 is the standard sea level pressure value, k is the sampling accuracy, H 机场标高 is the airport elevation data, QNH hpa Corrected sea level pressure data for airports.

5. The device according to claim 1, characterized in that The device also includes a pressure output module; Before simulating the flight environment, a dedicated pipeline is used to connect the pressure output module to the pressure input part of the atmospheric data module. The pressure output module stops after outputting a preset pressure, and the pressure change after a preset time is read. When the pressure change is less than a preset threshold, the simulated flight environment is started.

6. The device according to claim 1, characterized in that The standard value of air pressure is calculated based on the corrected sea level pressure data and simulated flight altitude, including: When the corrected sea level pressure data is greater than the preset air pressure value or the simulated flight altitude is not greater than the preset altitude, the standard air pressure value is calculated in the following way: ； When the corrected sea level pressure data is not greater than the preset pressure value or the simulated flight altitude is greater than the preset altitude, the standard pressure value is calculated in the following way: ； in, is the standard value of air pressure, P0 is the standard sea level pressure value, H is the simulated flight altitude, and k is the sampling accuracy.

7. The device according to claim 1, characterized in that Determining an airspeed threshold range according to the simulated airspeed includes: Determine a range of simulated airspeed, calculate the upper and lower limits of the simulated airspeed range according to the following formula to obtain the upper and lower limits of the airspeed threshold, and obtain the airspeed threshold range according to the upper and lower limits of the airspeed threshold; in, is the airspeed threshold, P0 is the standard sea level pressure value, k is the sampling accuracy, v To simulate airspeed, v cso is the standard airspeed; Determine the total pressure value corresponding to each set of atmospheric data modules based on simulated airspeed, static pressure and altitude conditions, including: Wherein, P is the total pressure value and H is the conditional altitude during calibration.

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