A method of controlling the transfer of fuel in a helicopter

Abstract

The present application belongs to the technical field of electromechanical management, and relates to a helicopter fuel transfer control method. The method comprises the following steps: when the transfer pump switch collected by the electromechanical management computer is in the on state, and no transfer direction input by the user through the electromechanical parameter display is received, it is determined that the current has met the conditions for entering automatic transfer control; when the fuel quantity of 1-3 engines meets the automatic transfer requirement, the automatic transfer state is entered, and the transfer direction is controlled to change according to the automatic transfer control process; in the automatic transfer state, the "stop automatic transfer" instruction input by the user through the electromechanical parameter display is received; according to the "stop automatic transfer" instruction, the automatic transfer state is exited, and it is determined that the current has met the conditions for entering manual transfer control; the transfer direction input by the user through the electromechanical parameter display is received, the manual transfer state is entered, and the transfer direction is changed in response to the operation of the user on the manual transfer interface.

Description

Technical Field

[0001] The invention belongs to the technical field of electromechanical management and relates to a helicopter fuel transfer control method. Background Art

[0002] The electromechanical management system collects the transfer pump switch signal, the fuel quantity of engine 1, the fuel quantity of engine 2, the fuel quantity of engine 3, the high / low oil level of fuel tank 1, the high / low oil level of fuel tank 2, and the high / low oil level of fuel tank 3, controls the opening / closing of electromagnetic conversion switch 1, the opening / closing of electromagnetic conversion switch 2, the opening / closing of electromagnetic conversion switch 3, and the opening / closing of electromagnetic conversion switch 4, and obtains feedback signals to control the forward / reverse rotation of the transfer pump, thereby realizing automatic and manual fuel transfer control functions between fuel tanks 1, 2, and 3.

[0003] The electromechanical management system consists of an electromechanical management computer and an electromechanical parameter display. The electromechanical management computer is responsible for information collection, processing, and output, while the electromechanical parameter display is responsible for display and human-computer interaction.

[0004] In previous models, the electromechanical management system was only used to realize the automatic fuel transfer control function. This is the first time that the helicopter electromechanical management system has realized both automatic and manual fuel transfer control functions, making it convenient to switch between automatic and manual transfers. Summary of the Invention

[0005] The purpose of the present invention is to design a fuel transfer control method in order to realize the automatic and manual fuel transfer control functions between the first, second and third fuel tanks.

[0006] Technical solution:

[0007] A helicopter fuel transfer control method, comprising:

[0008] When the transfer pump switch collected by the electromechanical management computer is in the on state and the transfer direction input by the user through the electromechanical parameter display is not received, it is determined that the conditions for entering the automatic transfer control are currently met;

[0009] Check the fuel quantity of 1-3 engines;

[0010] When the fuel quantity of engines 1-3 meets the automatic transfer requirements, the system enters the automatic transfer state. The automatic transfer symbol is displayed on the electromechanical parameter display, and the transfer direction is switched according to the automatic transfer control process. The transfer direction needs to be switched according to the start logic and stop logic.

[0011] In the automatic transfer state, receiving the "stop automatic transfer" command input by the user through the electromechanical parameter display;

[0012] According to the "stop automatic transfer" instruction, exit the automatic transfer state and make sure that the conditions for entering manual transfer control are met;

[0013] Receive the transfer direction input by the user through the electromechanical parameter display, enter the manual transfer state, display the manual transfer interface on the electromechanical parameter display, respond to the user's operation on the manual transfer interface, and change the transfer direction. The transfer direction is changed according to the start logic\stop logic.

[0014] A virtual button representing stop is displayed on the manual transfer interface, and the method further includes:

[0015] In the manual transfer state, if the low oil level alarm of the outlet tank or the oil volume enters the red zone, or the high oil level alarm of the inlet tank or the oil volume enters the yellow zone, or in response to the user clicking the virtual button representing stop on the manual transfer interface, exit the manual transfer state and the manual transfer interface, and determine that the conditions for entering automatic transfer control are currently met; detect the fuel volume of 1-3 engines.

[0016] The automatic transfer control process includes:

[0017] a) If the fuel quantity of engine 2 is greater than or equal to the sum of the fuel quantity of engine 1 and engine 3, automatic transfer will start in the direction of "engine 2 → engine 3";

[0018] b) If the fuel quantity of engine 2 is less than or equal to three-quarters of the sum of the fuel quantity of engine 1 and engine 3, the transfer direction changes to "engine 2 → engine 1";

[0019] c) If the fuel quantity of engine 2 is ≤ half of the sum of the fuel quantities of engine 1 and engine 3, the difference between the fuel quantities of engine 1 and engine 3 is compared; if the fuel quantity of engine 1 is greater than the fuel quantity of engine 3 + 15kg, the transfer direction changes to "engine 1 → engine 3"; if the fuel quantity of engine 3 is greater than the fuel quantity of engine 1 + 15kg, the transfer direction changes to "engine 3 → engine 1"; if the difference between the fuel quantities of engine 1 and engine 3 is less than 10kg, stop the automatic transfer.

[0020] During the automatic transfer process, if the low oil level alarm in the oil outlet tank or the oil level enters the red zone, or the high oil level alarm in the oil inlet tank or the oil level enters the yellow zone, the automatic transfer will be stopped.

[0021] The above automatic transfer control process must enter a) then b) and then c) in the following order.

[0022] When the transfer changes from one direction to another, the transfer is stopped first and then the transfer in the other direction is started.

[0023] The transfer direction is converted according to the start logic, including:

[0024] If the feedback signals of "electromagnetic transfer switch 1", "electromagnetic transfer switch 2", "electromagnetic transfer switch 3" and "electromagnetic transfer switch 4" received by the electromechanical management computer within 5 seconds are consistent with the output control signals, the "transfer pump" will be controlled to "forward" or "reverse" according to the corresponding transfer direction;

[0025] If the feedback signals of "electromagnetic conversion switch 1", "electromagnetic conversion switch 2", "electromagnetic conversion switch 3" and "electromagnetic conversion switch 4" received by the electromechanical management computer for 5 seconds or more are inconsistent with the output control signals, the transfer will be stopped, and the output control "electromagnetic conversion switch 1" will be "off", "electromagnetic conversion switch 2" will be "off", "electromagnetic conversion switch 3" will be "off" and "electromagnetic conversion switch 4" will be "off"; after this time, as long as the electromechanical management computer is not powered off and restarted, automatic transfer will no longer be performed.

[0026] The transfer direction is switched according to the stop logic, including:

[0027] If the "transfer pump" output by the electromechanical management computer is "not working" at this time, the output control "electromagnetic conversion switch 1" is "off", "electromagnetic conversion switch 2" is "off", "electromagnetic conversion switch 3" is "off", and "electromagnetic conversion switch 4" is "off";

[0028] If the "transfer pump" output by the electromechanical management computer is "forward" or "reverse" at this time, the output control of the "transfer pump" will first be "not working", and after 2 seconds the output control of "electromagnetic conversion switch 1" will be "off", "electromagnetic conversion switch 2" will be "off", "electromagnetic conversion switch 3" will be "off", and "electromagnetic conversion switch 4" will be "off".

[0029] There are two working states for "electromagnetic conversion switch 1", "electromagnetic conversion switch 2", "electromagnetic conversion switch 3" and "electromagnetic conversion switch 4", namely "open" and "closed".

[0030] There are three working states of the "transfer pump": "off", "forward", and "reverse".

[0031] When automatic / manual transfer is not in progress, the output control "electromagnetic switch 1" is "off", "electromagnetic switch 2" is "off", "electromagnetic switch 3" is "off", "electromagnetic switch 4" is "off", and the transfer pump is "off".

[0032] There are 6 transfer directions, namely "1st → 2nd", "2nd → 1st", "1st → 3rd", "3rd → 1st", "2nd → 3rd", and "3rd → 2nd".

[0033] Beneficial Effects: This invention implements both automatic and manual fuel transfer control functions, facilitating automatic / manual transfer switching. It has been practically applied to specific models with positive results and can be applied to similar control functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is the cross-link diagram of the fuel transfer control of the electromechanical management system.

[0035] Figure 2 This is the flow chart of the fuel transfer control software of the electromechanical management system. DETAILED DESCRIPTION

[0036] Manual transfer or automatic transfer can only be performed when the transfer pump switch collected by the electromechanical management computer is in the on state; otherwise, manual transfer or automatic transfer cannot be performed.

[0037] The electromechanical management computer will send the current transfer status to the electromechanical parameter display in real time. Figure 1 shown.

[0038] The electromechanical parameter display can be operated to stop automatic transfer and issue manual transfer instructions.

[0039] "Electromagnetic Switch 1," "Electromagnetic Switch 2," "Electromagnetic Switch 3," and "Electromagnetic Switch 4" have two operating states: "Open" and "Closed." "Transfer Pump" has three operating states: "Off," "Forward," and "Reverse."

[0040] When automatic / manual transfer is not in progress, the output control "electromagnetic switch 1" is "off", "electromagnetic switch 2" is "off", "electromagnetic switch 3" is "off", "electromagnetic switch 4" is "off", and the transfer pump is "off".

[0041] There are 6 transfer directions, namely "1st → 2nd", "2nd → 1st", "1st → 3rd", "3rd → 1st", "2nd → 3rd", and "3rd → 2nd".

[0042] When firing "1st → 2nd", the output control "electromagnetic switch 1" is "off", "electromagnetic switch 2" is "on", "electromagnetic switch 3" is "off", "electromagnetic switch 4" is "on", and the transfer pump is "forward".

[0043] When firing "2 shots → 1 shot", the output control "electromagnetic switch 1" is "off", "electromagnetic switch 2" is "on", "electromagnetic switch 3" is "off", "electromagnetic switch 4" is "on", and the transfer pump is "reverse".

[0044] When firing "1st → 3rd", the output control "electromagnetic switch 1" is "off", "electromagnetic switch 2" is "off", "electromagnetic switch 3" is "on", "electromagnetic switch 4" is "on", and the transfer pump is "forward".

[0045] When "3 shots → 1 shot", the output control "electromagnetic conversion switch 1" is "off", "electromagnetic conversion switch 2" is "off", "electromagnetic conversion switch 3" is "on", "electromagnetic conversion switch 4" is "on", and the transfer pump is "reverse".

[0046] When firing "2 shots → 3 shots", the output control "electromagnetic switch 1" is "open", "electromagnetic switch 2" is "open", "electromagnetic switch 3" is "closed", "electromagnetic switch 4" is "closed", and the transfer pump is "reverse".

[0047] When "3 shots → 2 shots", the output control "electromagnetic conversion switch 1" is "open", "electromagnetic conversion switch 2" is "open", "electromagnetic conversion switch 3" is "closed", "electromagnetic conversion switch 4" is "closed", and the transfer pump is "forward".

[0048] Oil level red and yellow zone range:

[0049] a) The red zone for low fuel level of 1 engine is [0kg, 120kg], and the yellow zone for high fuel level is [955kg, 1080kg).

[0050] b) The red zone of low fuel level for engine 2 is [0kg, 94kg], and the yellow zone of high fuel level is [1260kg, 1400kg).

[0051] c) For engine 3, the low fuel level red zone range is [0kg, 120kg], and the high fuel level yellow zone range is [955kg, 1080kg).

[0052] Automatic / manual transfer start logic in a certain direction:

[0053] The electromechanical management computer first controls "electromagnetic transfer switch 1", "electromagnetic transfer switch 2", "electromagnetic transfer switch 3", and "electromagnetic transfer switch 4" to "open" or "close" according to the corresponding transfer direction:

[0054] a) If the feedback signals from "electromagnetic transfer switch 1", "electromagnetic transfer switch 2", "electromagnetic transfer switch 3" and "electromagnetic transfer switch 4" received by the electromechanical management computer within 5 seconds are consistent with the output control signals, the "transfer pump" will be controlled to "forward" or "reverse" according to the corresponding transfer direction; (If the feedback signals are inconsistent with the output control signals within 5 seconds, other instructions can be responded to)

[0055] b) If the feedback signals received by the electromechanical management computer from "electromagnetic transfer switch 1," "electromagnetic transfer switch 2," "electromagnetic transfer switch 3," and "electromagnetic transfer switch 4" are inconsistent with the output control signals for 5 seconds or more, the transfer will be stopped and the output control signals for "electromagnetic transfer switch 1" will be "off," "electromagnetic transfer switch 2" will be "off," "electromagnetic transfer switch 3" will be "off," and "electromagnetic transfer switch 4" will be "off." For automatic transfer, at this point, automatic transfer will not occur unless the electromechanical management computer is powered off and restarted.

[0056] Automatic / manual transfer stop logic in a certain direction:

[0057] a) If the "transfer pump" output by the electromechanical management computer is "not working", the output control "electromagnetic transfer switch 1"

[0058] is "off", "electromagnetic switch 2 is off", "electromagnetic switch 3 is off", "electromagnetic switch

[0059] Switch 4" is "off";

[0060] 0b) If the "transfer pump" output by the electromechanical management computer is "forward" or "reverse", the control "transfer pump" is output first.

[0061] Pump" is "not working", and after 2 seconds the output control "electromagnetic conversion switch 1" is "off", "electromagnetic conversion switch 2" is "off"

[0062] The electromagnetic switch 3 is "off", and the electromagnetic switch 4 is "off". (No other commands will be responded to within 2 seconds.)

[0063] 1) Automatic transfer control logic such as Figure 2 shown

[0064] When the transfer pump switch collected by the electromechanical management computer is in the on state, and the "stop automatic transfer" instruction received from the electromechanical parameter display is "do not stop", and the "manual transfer status" is "do not transfer", the conditions for entering automatic transfer control are met.

[0065] The automatic transfer control process is as follows: You must first enter a), then b), then c) in the following order. After stopping automatic transfer, to re-enter automatic transfer, you must first enter a), then b), then c) in the following order:

[0066] a) If the fuel quantity of engine 2 is greater than or equal to the sum of the fuel quantity of engine 1 and engine 3, automatic transfer will start in the direction of "engine 2 → engine 3";

[0067] b) When the fuel quantity of engine 2 is less than or equal to three-quarters of the sum of the fuel quantity of engine 1 and engine 3, the transfer direction changes to "engine 2 → engine 1";

[0068] c) When the fuel quantity of engine 2 is less than or equal to half of the sum of the fuel quantities of engine 1 and engine 3, the difference between the fuel quantities of engine 1 and engine 3 is compared:

[0069] If the fuel quantity of 1 engine is greater than the fuel quantity of 3 engines + 15kg, the transfer direction will be changed to "1 engine → 3 engines";

[0070] If the fuel quantity of 3 engines is greater than the fuel quantity of 1 engine + 15kg, the transfer direction will be changed to "3 engines → 1 engine";

[0071] If the difference between the fuel quantity of 1st round and the fuel quantity of 3rd round is less than 10kg, the automatic transfer will be stopped.

[0072] When the automatic transfer in one direction changes to the automatic transfer in another direction, the automatic transfer is stopped first and then the automatic transfer in the other direction is entered.

[0073] During the automatic transfer process, if the "stop automatic transfer" command received from the electromechanical parameter display is "stop", the automatic transfer will be stopped.

[0074] During the automatic transfer process, if the low oil level alarm in the oil outlet tank or the oil level enters the red zone, or the high oil level alarm in the oil inlet tank or the oil level enters the yellow zone, the automatic transfer will be stopped.

[0075] 2) Manual transfer control logic

[0076] When the transfer pump switch recorded by the electromechanical management computer is in the on state, and the "stop automatic transfer" command received from the electromechanical parameter display is "stop", automatic oil transfer control will no longer be executed and manual transfer can be performed. When the "manual transfer status" received from the electromechanical parameter display is one of the above 6 transfer directions, it means that manual oil transfer in a certain direction has begun. The manual oil transfer process is as follows:

[0077] a) If the "manual oil transfer status" received from the electromechanical parameter display is one of the above 6 transfer directions, transfer in the corresponding transfer direction:

[0078] b) During manual transfer, if the outlet tank gives a low oil level alarm or the oil level enters the red zone, or the inlet tank gives a high oil level alarm or the oil level enters the yellow zone, stop manual transfer;

[0079] c) During the manual transfer process, if the "manual transfer status" received from the electromechanical parameter display is "no transfer", the manual transfer is stopped;

[0080] d) There will not be a direct change from manual transfer in one direction to manual transfer in another direction. If this happens, stop manual transfer first, and then enter manual transfer in the corresponding direction according to the "manual transfer status" of the electromechanical parameter display received.

Claims

1. A helicopter fuel transfer control method, characterized in that: include: When the transfer pump switch collected by the electromechanical management computer is in the on state and the transfer direction input by the user through the electromechanical parameter display is not received, it is determined that the conditions for entering the automatic transfer control are currently met; Check the fuel quantity of 1-3 engines; When the fuel quantity of engines 1-3 meets the automatic transfer requirements, the system enters the automatic transfer state. The automatic transfer symbol is displayed on the electromechanical parameter display, and the transfer direction is switched according to the automatic transfer control process. The transfer direction needs to be switched according to the start logic and stop logic. In the automatic transfer state, the system receives a "stop automatic transfer" command input by the user through the electromechanical parameter display; According to the "stop automatic transfer" command, exit the automatic transfer state and make sure that the conditions for entering manual transfer control are met; Receive the transfer direction input by the user through the electromechanical parameter display, enter the manual transfer state, display the manual transfer interface on the electromechanical parameter display, and respond to the user's operation on the manual transfer interface to switch the transfer direction. The transfer direction is switched according to the start logic / stop logic; The automatic transfer control process includes: a) If the fuel quantity of engine 2 is greater than or equal to the sum of the fuel quantity of engine 1 and engine 3, automatic transfer will begin in the direction of "engine 2 → engine 3"; b) If the fuel quantity of engine 2 is less than or equal to three-quarters of the sum of the fuel quantity of engine 1 and engine 3, the transfer direction changes to "engine 2 → engine 1"; c) If the fuel quantity in engine 2 is less than or equal to half the sum of the fuel quantities in engine 1 and engine 3, the difference between the fuel quantities in engine 1 and engine 3 is compared. If the fuel quantity in engine 1 is greater than the fuel quantity in engine 3 + 15 kg, the transfer direction changes to "engine 1 → engine 3." If the fuel quantity in engine 3 is greater than the fuel quantity in engine 1 + 15 kg, the transfer direction changes to "engine 3 → engine 1." If the difference between the fuel quantities in engine 1 and engine 3 is less than 10 kg, the automatic transfer is terminated. During the automatic transfer process, if the low oil level alarm in the oil outlet tank or the oil level enters the red zone, or the high oil level alarm in the oil inlet tank or the oil level enters the yellow zone, the automatic transfer will be stopped.

2. The method according to claim 1, characterized in that A virtual button representing stop is displayed on the manual transfer interface, and the method further includes: In the manual transfer state, if the low oil level alarm of the outlet tank or the oil volume enters the red zone, or the high oil level alarm of the inlet tank or the oil volume enters the yellow zone, or in response to the user clicking the virtual button representing stop on the manual transfer interface, exit the manual transfer state and the manual transfer interface, and determine that the conditions for entering automatic transfer control are currently met; detect the fuel volume of 1-3 engines.

3. The method according to claim 1, characterized in that The above automatic transfer control process must enter a) then b) and then c) in the following order.

4. The method according to claim 1, wherein When the transfer changes from one direction to another, the transfer is stopped first and then the transfer in the other direction is started.

5. The method according to claim 1, wherein The transfer direction is converted according to the start logic, including: If the feedback signals from "electromagnetic transfer switch 1", "electromagnetic transfer switch 2", "electromagnetic transfer switch 3" and "electromagnetic transfer switch 4" received by the electromechanical management computer within 5 seconds are consistent with the output control signals, the "transfer pump" will be controlled to "forward" or "reverse" according to the corresponding transfer direction; If the feedback signals of "electromagnetic conversion switch 1", "electromagnetic conversion switch 2", "electromagnetic conversion switch 3" and "electromagnetic conversion switch 4" received by the electromechanical management computer for 5 seconds or more are inconsistent with the output control signals, the transfer will be stopped, and the output control "electromagnetic conversion switch 1" will be "off", "electromagnetic conversion switch 2" will be "off", "electromagnetic conversion switch 3" will be "off" and "electromagnetic conversion switch 4" will be "off"; after this time, as long as the electromechanical management computer is not powered off and restarted, automatic transfer will no longer be performed.

6. The method according to claim 1, characterized in that The transfer direction is switched according to the stop logic, including: If the "transfer pump" output by the electromechanical management computer is "not working", the output control "electromagnetic conversion switch 1" is "off", "electromagnetic conversion switch 2" is "off", "electromagnetic conversion switch 3" is "off", and "electromagnetic conversion switch 4" is "off"; If the "transfer pump" output by the electromechanical management computer is "forward" or "reverse" at this time, the output control of the "transfer pump" will first be "off", and 2 seconds later the output control of "electromagnetic conversion switch 1" will be "off", "electromagnetic conversion switch 2" will be "off", "electromagnetic conversion switch 3" will be "off", and "electromagnetic conversion switch 4" will be "off".

7. The method according to claim 1, characterized in that "Electromagnetic switch 1", "Electromagnetic switch 2", "Electromagnetic switch 3", and "Electromagnetic switch 4" have two working states: "Open" and "Closed". There are three working states of the "transfer pump": "off", "forward", and "reverse". When automatic / manual transfer is not in progress, the output control "electromagnetic switch 1" is "off", "electromagnetic switch 2" is "off", "electromagnetic switch 3" is "off", "electromagnetic switch 4" is "off", and the "transfer pump" is "off".

8. The method according to claim 1, characterized in that There are 6 transfer directions, namely "1st → 2nd", "2nd → 1st", "1st → 3rd", "3rd → 1st", "2nd → 3rd", and "3rd → 2nd".

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