Radio automatic tuning method and device for helicopter flight management system

Abstract

The invention provides a radio automatic tuning method and device for a helicopter flight management system, and the method comprises the steps: S1, a flight management system obtains the position information of a helicopter, and the position information comprises latitude and longitude; s2, searching a preset database by the flight management system, and determining whether the helicopter enters a coverage range of a second ground platform except the first ground platform or not; the first ground platform is the currently accessed ground platform; the preset database stores the frequency and the coverage range of each radio communication navigation ground station; and S3, if yes, switching the frequency of the airborne radio communication navigation equipment to the frequency of the second ground station. Frequency tuning can be automatically carried out on radio communication and navigation equipment according to the current position of the helicopter, the operation automation degree in the flight process is greatly improved, and the operation load of a unit is effectively reduced.

Description

Technical Field

[0001] The invention belongs to the field of avionics system design, and in particular relates to a method and a device for automatic radio tuning of a helicopter flight management system. Background Art

[0002] The flight management system (FMS) mainly completes functions such as position solution, flight plan management, wireless communication navigation equipment tuning, and performance management.

[0003] The flight management system enables helicopters to achieve regional navigation. Different from the traditional point-to-point navigation method that relies on ground navigation stations, regional navigation allows helicopters to fly along any desired route within the coverage area of ​​navigation signals. However, for helicopters, radio navigation is still an important auxiliary navigation method.

[0004] The flight management system receives data from multiple short-range and long-range navigation sensors (VOR / DME, DME / DME, AHRS, GPS) for position resolution. Based on the current position and flight plan, the resolved navigation data is displayed on the MCDU and MFD. The flight management system can create flight routes around the world. The horizontal navigation function guides the pilot to fly along the predetermined route based on the navigation information resolved by the geographic coordinate points.

[0005] The flight management system also provides a human-machine operation interface for radio communication and navigation equipment, and provides equipment control instructions such as frequency tuning and mode control.

[0006] During the operation of the traditional flight management system, the pilot needs to manually tune and control the radio communication navigation equipment according to the control area, the signal coverage of the radio navigation station, and the terminal type, which results in a heavy operating load. Summary of the invention

[0007] The present invention proposes a method and device for automatic radio tuning of a helicopter flight management system. The flight management system can automatically tune the frequency of radio communication and navigation equipment according to the current position of the helicopter, which greatly improves the degree of operation automation during the flight and effectively reduces the operating load of the crew.

[0008] The first aspect of the present invention provides a helicopter flight management system radio automatic tuning method, comprising:

[0009] S1. The flight management system obtains the helicopter location information, which includes longitude and latitude;

[0010] S2, the flight management system searches a preset database to determine whether the helicopter enters the coverage of a second ground station other than the first ground station; the first ground station is the currently connected ground station; the preset database stores the frequencies and coverage of each radio communication navigation ground station;

[0011] S3. If yes, switch the frequency of the onboard radio communication navigation equipment to the frequency of the second ground station.

[0012] Optionally, the preset database also stores the priority of each radio communication navigation ground station; the method further includes:

[0013] When there are multiple second ground stations, the frequency of the onboard radio communication navigation device is switched to the frequency of the second ground station with the highest priority.

[0014] Optionally, the priority of the ground station is determined according to the signal strength and control level of the ground station.

[0015] Optionally, the method further includes:

[0016] When the number of the second ground stations is plural, the frequency of the onboard radio communication navigation equipment is switched to the frequency of the ground station closer to the route.

[0017] Optionally, after S3, the method further includes:

[0018] S4, storing the frequency of the first ground station as a backup frequency;

[0019] S5. When receiving the fast switching instruction input by the pilot, the frequency of the onboard radio communication navigation equipment is switched back to the frequency of the first ground station.

[0020] Optionally, the ground station identifier stored in the database adopts a 4-byte ASCII code.

[0021] Optionally, the airborne radio communication navigation device is an airborne radio communication navigation device configured to automatically switch frequencies.

[0022] A second aspect of the present invention provides a helicopter flight management system radio automatic tuning device, which is used to execute the method as described in any one of the first aspects.

[0023] Beneficial technical effects of this application:

[0024] The present invention proposes a method and device for automatic radio tuning of a helicopter flight management system. By applying the present invention, the flight management system can automatically tune the frequency of radio communication and navigation equipment according to the current position of the helicopter, which greatly improves the degree of operation automation during the flight and effectively reduces the operating load of the crew. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a list of ground stations;

[0026] Figure 2 This is an illustration of the ground station coverage;

[0027] Figure 3 Automatic tuning switch for airborne equipment

[0028] Figure 4 Schematic diagram of the automatic tuning method flow chart. DETAILED DESCRIPTION

[0029] The specific contents of the technical solution provided by the present invention are introduced below in conjunction with the accompanying drawings.

[0030] See also Figure 1-4 The present invention provides a method and device for automatic radio tuning of a helicopter flight management system.

[0031] The invention provides a radio automatic tuning method for a helicopter flight management system based on a navigation database, which can effectively improve the degree of operation automation during flight and reduce the operation load of the crew.

[0032] The implementation steps are as follows:

[0033] Step 1: Generate a navigation database containing radio communication navigation ground station information on the ground.

[0034] The navigation database format is defined as follows:

[0035]

[0036]

[0037] The effective range of the ground station is formed by the above-mentioned closed electric circle.

[0038] Step 2: Load the above navigation database into the flight management system.

[0039] Step 3: You can preview the coverage of the wireless communication navigation ground station on the helicopter, including ground station identification, ground station type, ground station location, effective range and other information.

[0040] Step 4: Select the airborne radio communication navigation equipment that needs to be automatically tuned.

[0041] Step 5: The flight management system tunes the onboard radio communication and navigation equipment according to the real-time position of the helicopter and the radio communication and navigation ground station information in the navigation database.

[0042] Tuning principles:

[0043] The flight management system determines the ground station type. When the ground station type is consistent with the onboard equipment type:

[0044] When entering a blank area from the current terrestrial station area, the current tuning frequency is maintained.

[0045] When entering a new ground station area from the current ground station area,

[0046] If the area is covered by a single ground station, the flight management system will automatically tune the onboard equipment to that ground station;

[0047] If the area is covered by multiple ground stations, the flight management system performs tuning operations based on the priority of the ground stations;

[0048] If there are multiple ground stations covering the area and they have the same priority, the flight management system performs tuning operations based on the relative position of the aircraft.

[0049] If the area is covered by multiple ground stations with the same priority and the same bearing relative to the aircraft, the flight management system will perform tuning operations based on the distance between the ground station and the aircraft.

[0050] Step 6: The flight management system notifies the crew of a successful tuning notification.

[0051] Step 7: Undo the tuning operation with one click (optional).

[0052] The radio communication navigation ground station information includes latitude and longitude coordinates, frequency and customized signal effective coverage range. The above information is stored in the navigation database, and the navigation database is loaded into the flight management system.

[0053] The list of radio communication and navigation ground stations can be viewed in the onboard flight management system, and the effective signal coverage of each ground station can be graphically displayed on the helicopter map navigation page.

[0054] The crew can individually set the onboard radio communication and navigation equipment to accept automatic frequency tuning control.

[0055] The flight management system determines the ground station coverage range of the helicopter based on the current real-time position of the helicopter and tunes the frequency of the onboard radio communication and navigation equipment. After successful tuning, the new frequency is set as the current working frequency, the old frequency is set as the backup frequency, and the crew is notified of the successful tuning.

[0056] The crew can switch the working frequency and the backup frequency with one click through the flight management system. After the crew manually switches the working frequency and the backup frequency, within the coverage range of the current ground station, the flight management system will no longer perform automatic tuning operations on the airborne equipment until entering the next signal area.

Claims

1. A method for automatic radio tuning in a helicopter flight management system, characterized in that: include: S1. The flight management system obtains the helicopter location information, which includes longitude and latitude; S2. The flight management system searches a preset database to determine whether the helicopter enters the coverage of a second ground station other than the first ground station; the first ground station is the currently connected ground station; the preset database stores the frequencies and coverage of each radio communication navigation ground station; S3. If yes, switch the frequency of the onboard radio communication navigation equipment to the frequency of the second ground station.

2. The helicopter flight management system radio automatic tuning method according to claim 1, characterized in that: The preset database also stores the priority of each radio communication navigation ground station; the method also includes: When there are multiple second ground stations, the frequency of the onboard radio communication navigation device is switched to the frequency of the second ground station with the highest priority.

3. The helicopter flight management system radio automatic tuning method according to claim 2, characterized in that: The priority of the ground station is determined by the signal strength and control level of the ground station.

4. The helicopter flight management system radio automatic tuning method according to claim 1, characterized in that: The method further comprises: When the number of the second ground stations is plural, the frequency of the onboard radio communication navigation equipment is switched to the frequency of the ground station closer to the route.

5. The helicopter flight management system radio automatic tuning method according to claim 1, characterized in that: After S3, the method further includes: S4, storing the frequency of the first ground station as a backup frequency; S5. When receiving the fast switching instruction input by the pilot, the frequency of the onboard radio communication navigation equipment is switched back to the frequency of the first ground station.

6. The helicopter flight management system radio automatic tuning method according to claim 1, characterized in that: The ground station identifiers stored in the database use 4-byte ASCII codes.

7. The helicopter flight management system radio automatic tuning method according to claim 1, characterized in that: The airborne radio communication navigation equipment is an airborne radio communication navigation equipment configured to automatically switch frequencies.

8. A helicopter flight management system radio automatic tuning device, characterized in that: Used to perform the method according to any one of claims 1 to 7.

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