Method for automatically identifying external store

Abstract

The invention belongs to the technical field of aviation machinery control, and relates to a method for automatically identifying an external hanging object, which comprises the following steps of: 1, defining an identification position for a hole position on an external hanging object connector; 2, defining a hole site on the external hanging object connector to put an external hanging object; 3, the external store is hung on the airplane through the hanging frame, the external store connector is in butt joint with the hanging frame connector, and the hook connector is in butt joint with the hanging frame connector; 4, the hook outputs a ground signal to the airborne task system through a hook connector, meanwhile, an identification signal of the external store is output to the airborne task system through a connector of the external store, the airborne task system collects the ground signal of the hook and the identification signal of the external store at the same time through a collection circuit, meanwhile, the airplane is in a ground state, and the hook is connected with the external store. The airborne task system completes automatic identification of the external store; and 5, reporting the type of the external store to a display control system through a bus after the identification is completed.

Description

Technical Field

[0001] The invention belongs to the technical field of aviation machinery control and relates to a method for automatic identification of external objects. Background Art

[0002] At present, the external attachments hung on aircraft are divided into delivery-type attachments and mission-type attachments. Delivery-type attachments are divided into guided delivery-type attachments and unguided delivery-type attachments. Mission-type attachments mainly include auxiliary fuel tanks, smoke extractors, luggage pods and other attachments. Guided delivery-type attachments are automatically identified by reporting the attachment type via the bus. Other attachments have no bus communication function, so they can only be identified by ground staff manually loading the attachment type. Due to the large number of attachment types, there are situations where the attachments are different but have the same appearance. The current manual loading method has the problem of manual loading errors leading to the wrong delivery of attachments. In addition, manual loading increases the workload of ground staff. Summary of the invention

[0003] Purpose of the invention: The present invention proposes a method for automatic identification of external hangers, which is used to solve the problem in the prior art that the identification can only be completed by manually loading the external hanger type by ground staff. Since there are many types of external hangers, there are situations where the external hangers are different but have the same appearance. The current manual loading method has the problem of manual loading errors leading to the wrong release of external hangers.

[0004] The technical solution of the present invention:

[0005] A method for automatically identifying an external object comprises the following steps:

[0006] Step 1: Define the "identification position" of the hole position on the external plug-in connector. One hole number represents one external plug-in.

[0007] Step 2: Define the hole positions on the external device connector as "delivery type external devices" to distinguish between delivery type external devices and mission type external devices;

[0008] Step 3: Hang the external attachment on the aircraft through the pylon, align the external attachment connector with the pylon connector, and align the hook connector with the pylon connector;

[0009] Step 4: The hook outputs a "ground" signal to the airborne mission system through the hook connector, and at the same time, the "identification signal" of the external attachment is output to the airborne mission system through the connector of the external attachment. The airborne mission system simultaneously collects the "ground" signal of the hook and the "identification signal" of the external attachment through the acquisition circuit. At the same time, the aircraft is on the ground, and the airborne mission system completes the automatic identification of the external attachment.

[0010] Step 5: After identification is completed, the type of external device is reported to the display and control system through the bus.

[0011] Furthermore, in step 1, the “identification bit” signal is designed to be a “ground” signal.

[0012] Furthermore, in step 2, when the external attachment is hung on the aircraft via the hanger, the hook of the hanger is in a locked state.

[0013] Furthermore, the hole position signal of "dropping external objects" in step 2 is interlocked with the "dropping" signal output by the airborne mission system. Specifically, if the hole position signal of "dropping external objects" is valid, the drop button is pressed, the interlocking relay is energized, and the drop signal is sent to the hook to open the hook and complete the drop of the external objects. If the hole position signal of "dropping external objects" is invalid, the drop button is pressed, the interlocking relay is not energized, the drop signal will not be sent to the hook, and the external objects cannot be dropped.

[0014] Furthermore, if the airborne mission system only collects the "ground" signal of the hook, it means that there is no external load hanging on the hanger and the hook is just in a locked state; if the airborne mission system does not collect the "ground" signal of the hook and only collects the "external load identification" signal, it means that the hook is in an abnormal state, prompting the pilot to return as soon as possible.

[0015] Furthermore, the acquisition circuit in step 4 includes resistors R1, R2, an optocoupler and a reverse isolation diode. One end of the resistor R1 is connected to a 28V power supply, and the other end is connected to the anode of the optocoupler. The cathode of the optocoupler is connected to the positive electrode of the reverse isolation diode, and the negative electrode of the reverse isolation diode is connected to the rack connector. The collector of the optocoupler is connected to the power supply VCC, the emitter of the optocoupler is connected to one end of the resistor R2, the other end of the resistor R2 is grounded, and the emitter of the optocoupler is connected to the airborne mission system.

[0016] Furthermore, the resistance value of the resistor R1 is 2.7 kΩ, and the resistance value of the resistor R2 is 470 Ω.

[0017] Further, when the aircraft in step 4 is on the ground, the aircraft wheel load signal is valid.

[0018] Beneficial effects of the present invention:

[0019] The present invention adopts the definition of "identification position" and "delivery type external plug-in" position for each external plug-in, realizes automatic identification of external plug-ins, has reasonable design and simple implementation, solves the problem of accidental delivery of external plug-ins due to manual loading errors and accidental delivery of task type external plug-ins due to accidental pressing of the "delivery button", improves the security and reliability of the system, specifically:

[0020] 1) By defining the "identification position" of each external attachment, automatic identification of external attachments is achieved, with clear principles and simple implementation methods. This ensures the correctness of external attachment loading and reduces the burden on ground staff.

[0021] 2) By defining the "drop-type plug-in" position, the "drop-type plug-in" and the task-type plug-in are distinguished, and accidental pressing of the "drop button" will not cause the accidental drop of the task-type plug-in. The safety and reliability of the system are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the principle diagram of identifying non-guided delivery external stores;

[0023] Figure 2 This is the auxiliary fuel tank identification schematic diagram;

[0024] Figure 3 It is a schematic diagram showing the list of external items in the display and control system;

[0025] Figure 4 It is the logic diagram of external object recognition;

[0026] Figure 5 It is a schematic diagram of the installation of external attachments, hooks and racks;

[0027] Figure 6 Is the hook present schematic. DETAILED DESCRIPTION

[0028] The present invention is a method for automatic identification of external hangers. Aiming at the problem that the airborne mission system cannot automatically identify the type of external hangers, an automatic identification method is designed. The external hangers are classified, and an "identification position" is specified for each type of external hanger, that is, a fixed hole number is defined on the connector, and the hole number is unique, and one hole number can represent an external hanger. When the aircraft is on the ground, the airborne mission system collects the external hanger existence signal of the hanging point (indicating that the external hanger is hung on the aircraft's hanger) and the external hanger identification signal (the hole number of each external hanger is unique) to automatically identify the hung external hanger. The type of external hanger is reported to the display and control system and displayed in the external hanger list on the display. After the airborne mission system identifies the type of external hanger, it stores it in its non-volatile memory. When the aircraft is in the air, if the aircraft power system loses power unexpectedly, the CPU of the airborne mission system will generate an interrupt. In the interrupt service program, important information such as the list of external attachments, fault list, delivery program, and working status in the non-volatile memory can be correctly saved; when the power returns to normal, the airborne mission system can correctly restore the saved data and report it to the display control system for display. In addition, a "delivery-type external attachment" bit is specified on the connector, and this signal is interlocked with the "delivery" signal. That is, after the airborne mission system identifies a "delivery-type external attachment", even if the "delivery button" is pressed due to an error or the software is abnormal, it will not cause the accidental delivery of the external attachment.

[0029] One embodiment of the present invention provides a method for automatically identifying an external object, comprising the following steps:

[0030] Step 1: Define the "identification position" for the hole position on the external plug-in connector. One hole number represents one external plug-in, and the "identification position" signal is designed as a "ground" signal;

[0031] Step 2: Define the hole position on the external load connector as "drop-type external load", which is used to distinguish between drop-type external loads and mission-type external loads; the hole position signal of the "drop-type external load" in step 2 is interlocked with the "drop" signal output by the airborne mission system. Specifically, if the hole position signal of the "drop-type external load" is valid, the drop button is pressed, the interlock relay is energized, and the drop signal is sent to the hook to open the hook and complete the drop of the external load; if the hole position signal of the "drop-type external load" is invalid, the drop button is pressed, the interlock relay is not energized, the drop signal will not be sent to the hook, and the external load cannot be dropped.

[0032] Step 3: Hang the external attachment on the aircraft through the pylon (the hook of the pylon is in a locked state), and mate the external attachment connector with the pylon connector, and mate the hook connector with the pylon connector;

[0033] Step 4: The hook outputs a "ground" signal to the airborne mission system through the hook connector, and at the same time, the "identification signal" of the external attachment is output to the airborne mission system through the connector of the external attachment. The airborne mission system simultaneously collects the "ground" signal of the hook and the "identification signal" of the external attachment through the acquisition circuit. At the same time, the aircraft is in the ground state (that is, the aircraft wheel-borne signal is valid), and the airborne mission system completes the automatic identification of the external attachment.

[0034] The acquisition circuit includes resistors R1, R2, an optocoupler and a reverse isolation diode. One end of the resistor R1 is connected to a 28V power supply, and the other end is connected to the anode of the optocoupler. The cathode of the optocoupler is connected to the positive electrode of the reverse isolation diode, and the negative electrode of the reverse isolation diode is connected to the rack connector. The collector of the optocoupler is connected to the power supply VCC, the emitter of the optocoupler is connected to one end of the resistor R2, the other end of the resistor R2 is grounded, and the emitter of the optocoupler is connected to the airborne mission system.

[0035] Step 5: After identification is completed, the type of external device is reported to the display and control system through the bus.

[0036] In the present invention, if the airborne mission system only collects the "ground" signal of the hook, it means that the rack has no external objects hanging on it and the hook is just in a locked state; if the airborne mission system does not collect the "ground" signal of the hook and only collects the "external object identification" signal, it means that the hook is in an abnormal state, prompting the pilot to return as soon as possible.

[0037] A second embodiment of the present invention is:

[0038] The connector model used for the external attachment is J599 / 20JD35SN, with a total of 37 holes. The serial numbers are 1 to 37. It is stipulated that hole No. 1 is "public ground", hole No. 2 is "drop-type external attachment", hole No. 3 is "auxiliary fuel tank identification", hole No. 4 is "luggage pod identification", hole No. 5 is "smoke puller identification", hole No. 6 is "photoelectric pod identification", hole No. 7 is "a certain type of drop-type external attachment identification", etc., and each external attachment is uniformly defined to determine its uniqueness.

[0039] The external load is hung on the aircraft through the hanger, and the connector 3 of the external load is docked with the hanger connector 4, and the hook connector 10 is docked with the hanger connector 11. At this time, the hook of the hanger is in a locked state (holes 1 and 10 of the hook connector are connected). The hook outputs a "ground" signal to the airborne mission system through the hook connector 10, and at the same time, the "identification signal" of the external load is output to the airborne mission system through the connector 3 of the external load. The airborne mission system simultaneously collects the "ground" signal of the hook and the "identification signal" of the external load through the acquisition circuit. At the same time, the aircraft is in a ground state (that is, the aircraft wheel-borne signal is valid), and the airborne mission system completes the automatic identification of the external load. After the identification is completed, the type of external load is reported to the display and control system through the bus. If the airborne mission system only collects the "ground" signal of the hook, it means that the hanger is not hanging any external load, and the hook is only in a locked state; if the airborne mission system does not collect the "ground" signal of the hook, but only collects the "external load identification signal", it means that the hook is in an abnormal state, and the pilot is prompted to return as soon as possible. Figure 3 As shown in the figure, when the luggage pod is mounted on the No. 2 hanging point, 7 in the display and control system's external hanging list indicates "No. 2 hanging point", 8 indicates that the hook of the hanging rack is in a locked state, and 9 indicates the luggage pod, which displays "TRAVELPOD". The external hanging object recognition logic is as follows Figure 4 shown.

[0040] like Figure 1 As shown, GNDIN of the acquisition circuit 1 of the airborne mission system is the signal input terminal. When the input terminal is a "ground" signal, +28V is connected to the optocoupler through a 2.7K resistor and then to the ground. The optocoupler light emitting diode is turned on. At this time, the GNDIN_O output is "1", that is, the signal is valid.

[0041] Adding a "reverse isolation diode" 2 in the acquisition circuit 1 can prevent the acquisition circuits of multiple devices from cross-connecting with each other and causing an erroneous state of the acquisition signal when multiple devices jointly acquire the "external object recognition" signal.

[0042] When the hanging external object is a "certain type of drop-type external object", such as Figure 1As shown, the three wires of the No. 1, 2, and 7 holes of the connector 3 of the external attachment are connected. After the hanger connector 4 of the airborne mission system is connected to the connector 3 of the external attachment, the airborne mission system will collect the "No. 7 hole" as the "ground" signal, and the hook outputs the "ground" signal. At the same time, the aircraft is in the ground state (that is, the aircraft wheel signal is valid). The airborne mission system determines that the external attachment hung at this time is "a certain type of delivery type external attachment" through the signal definition, completes the automatic identification process, and stores the external attachment list in its non-volatile memory. When the aircraft is in the air, if the airborne mission system loses power or fails, after restarting the airborne mission system, the mission system calls the external attachment list stored in the non-volatile memory, and reports the external attachment "a certain type of delivery type external attachment" to the display control system for display. The No. 2 hole is a "delivery type external attachment", and this signal is interlocked with the "delivery circuit" 5 of the airborne mission system, that is, when this signal is valid, the airborne mission system can output the "delivery signal", which ensures that the task type external attachment is hung and will not cause accidental delivery of the external attachment.

[0043] When the external storage is an auxiliary fuel tank, Figure 2 As shown, the two wires of the No. 1 and No. 3 holes of the connector of the auxiliary fuel tank 6 are connected, and the airborne mission system collects the "No. 3 hole" as a "ground" signal, and the hook outputs the "ground" signal. At the same time, the aircraft is in the ground state (that is, the aircraft wheel-borne signal is valid). The airborne mission system determines that the external hanging object at this time is the "auxiliary fuel tank" through the signal definition, completes the automatic identification process, and stores the external hanging list in its non-volatile memory. When the aircraft is in the air, when the aircraft power system has an unexpected power failure, the CPU of the airborne mission system generates an interrupt. In the interrupt service program, important information such as the external hanging object list, fault list, delivery program and working status in the non-volatile memory can be correctly saved; when the power supply returns to normal, the airborne mission system can correctly restore the saved data and report the external hanging object "auxiliary fuel tank" to the display control system for display. At the same time, the No. 2 hole of the connector of the auxiliary fuel tank 6 is not connected. Even if the "delivery button" is pressed due to misoperation or software abnormality, it will not cause accidental delivery of the auxiliary fuel tank.

[0044] Similarly, the identification method of other external objects is the same as above, among which Figure 2 , Figure 3 For the external attachment connector, only the required holes are drawn.

[0045] The present invention adopts the definition of "identification position" and "delivery type external plug-in" position for each external plug-in, realizes automatic identification of external plug-ins, has reasonable design and simple implementation, solves the problem of accidental delivery of external plug-ins due to manual loading errors and accidental delivery of task type external plug-ins due to accidental pressing of the "delivery button", and improves the safety and reliability of the system.

Claims

1. A method for automatically identifying external objects, characterized in that: The following steps are involved: Step 1: Define the hole position on the external plug-in connector as the "identification position", and one hole number represents one external plug-in; Step 2: Define the hole positions on the external device connector as "delivery type external devices" to distinguish between delivery type external devices and task type external devices; Step 3: Hang the external attachment on the aircraft through the pylon, align the external attachment connector with the pylon connector, and align the hook connector with the pylon connector; Step 4: The hook outputs a "ground" signal to the airborne mission system through the hook connector, and at the same time, the "identification signal" of the external attachment is output to the airborne mission system through the connector of the external attachment. The airborne mission system simultaneously collects the "ground" signal of the hook and the "identification signal" of the external attachment through the acquisition circuit. At the same time, the aircraft is on the ground, and the airborne mission system completes the automatic identification of the external attachment. Step 5: After identification is completed, the type of external device is reported to the display and control system through the bus.

2. The method for automatic identification of external objects according to claim 1, characterized in that: In step 1, the "identification bit" signal is designed as a "ground" signal.

3. The method for automatic identification of external objects according to claim 1, characterized in that: In step 2, when the external attachment is hung on the aircraft through the hanger, the hook of the hanger is in a locked state.

4. The method for automatic identification of external objects according to claim 1, characterized in that: The hole position signal of "dropping external objects" in step 2 is interlocked with the "dropping" signal output by the airborne mission system. Specifically, if the hole position signal of "dropping external objects" is valid, the drop button is pressed, the interlock relay is energized, and the drop signal is sent to the hook to open the hook and complete the drop of the external objects. If the hole position signal of "dropping external objects" is invalid, the drop button is pressed, the interlock relay is not energized, the drop signal will not be sent to the hook, and the external objects cannot be dropped.

5. The method for automatic identification of external objects according to claim 1, characterized in that: If the onboard mission system only collects the "ground" signal of the hook, it means that there is no external load hanging on the hanger and the hook is just in a locked state; if the onboard mission system does not collect the "ground" signal of the hook and only collects the "external load identification" signal, it means that the hook is in an abnormal state, prompting the pilot to return as soon as possible.

6. The method for automatic identification of external objects according to claim 1, characterized in that: The acquisition circuit in step 4 includes resistors R1, R2, an optocoupler and a reverse isolation diode. One end of resistor R1 is connected to a 28V power supply, and the other end is connected to the anode of the optocoupler. The cathode of the optocoupler is connected to the positive electrode of the reverse isolation diode, and the negative electrode of the reverse isolation diode is connected to the rack connector. The collector of the optocoupler is connected to the power supply VCC, the emitter of the optocoupler is connected to one end of the resistor R2, the other end of the resistor R2 is grounded, and the emitter of the optocoupler is connected to the airborne mission system.

7. The method for automatic identification of external objects according to claim 6, characterized in that: The resistance value of the resistor R1 is 2.7 kΩ, and the resistance value of the resistor R2 is 470 Ω.

8. The method for automatic identification of external objects according to claim 6, characterized in that: When the aircraft in step 4 is on the ground, the aircraft wheel load signal is valid.

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