CN219668493U - Self-powered lock catch detection system and nacelle - Google Patents

Abstract

The utility model relates to the technical field of cabins of airplanes, in particular to a self-powered lock catch detection system and a nacelle. The utility model provides a self-powered lock catch detection system which comprises a power supply module, a detection module, a signal processing module, a sending module and a receiving module. The detection module detects that the lock catch is in a locking state or an opening state, information is transmitted to the signal processing module, the signal processing module converts the locking state into a first signal instruction, and the opening state is converted into a second signal instruction; the sending module sends the first signal instruction or the second signal instruction to the receiving module, and the receiving module knows the locking state in the short cabin. The energy supply module is a friction nano generator, so that real-time sensing monitoring and information transmission are conveniently realized, the accident rate of the lock catch is reduced, and the safety is improved; the power supply and the information transmission of the lock catch detection system can be independent, the interference to the control of other systems is avoided, and the flight safety is ensured. The nacelle provided by the utility model also has the technical effects.

Description

Self-powered lock catch detection system and nacelle

Technical Field

The utility model relates to the technical field of cabins of airplanes, in particular to a self-powered lock catch detection system and a nacelle.

Background

The aircraft nacelle is one of key components of an aircraft propulsion system, and consists of an air inlet channel, a fan cover, a thrust reverser system and a tail spraying device, and provides multiple functions of system protection, pneumatic rectification, noise reduction, ventilation, liquid discharge, maintenance and the like for an engine.

In the inspection and maintenance of systems on engine fan casings (lubricating tanks, FADEC, etc.), it is often necessary to open the fan housing of the nacelle, which after inspection and maintenance has not been done correctly with the lock catch at the bottom of the fan housing, and which has resulted in the event of opening or flying off the fan housing during flight. The nacelle fan cover is located at a position close to the ground and located at a lower sight line, and the problem that the lock catch at the bottom of the fan cover cannot be locked correctly is not easy to find during maintenance operation and pre-flight around-flight inspection. Meanwhile, as the nacelle is positioned in the middle area of the wing, the fuselage and the engine, once the fan cover is opened in the air, related structures and systems of the wing, the fuselage or the engine can be damaged, and safety accidents are caused. In the related art, aircraft manufacturers have employed various means to prevent fan housing fly-off events, such as the use of orange warning colors in conventional latch handles, reducing the frequency of fan housing opening during maintenance. For example, improved lockers are used which carry a key and a "remove before flight" indicator, and the key is required to unlock the lock. When the fan cowling is open, the key remains on the lock catch, and the key can be removed only when the lock catch is fully closed. When not in use, the shackle key must be stored with the landing gear pin in the cockpit. For example, a linkage mechanism is provided that when the fan housing latch is opened, a guard flag extends from the left side fan housing surface to alert ground personnel and crewmembers that the latch is not closed. For example, in order to meet the safety requirement, a lock catch cover plate system is additionally arranged at the lock line, and the lock catch cover plate can be closed and locked only after all locks are completely closed.

However, the mechanical protection scheme not only increases the operation procedure, but also increases the weight of the structure, and meanwhile, the safety accident cannot be completely avoided.

Disclosure of Invention

The utility model provides a self-powered lock catch detection system and a nacelle, which can effectively solve the above or other potential technical problems.

The first aspect of the utility model provides a self-powered latch detection system for detecting a latch state in a short cabin, the self-powered latch detection system comprising a power supply module, a detection module, a signal processing module, a sending module and a receiving module; the energy supply module is used for supplying electric energy to the detection module, the signal processing module and the sending module, and is a friction nano generator; the detection module is used for detecting whether the lock catch in the nacelle is in a locking state or an opening state, and the signal processing module is used for converting the locking state into a first signal instruction and converting the opening state into a second signal instruction; the sending module is used for sending the first signal instruction or the second signal instruction to the receiving module.

In an alternative embodiment according to the first aspect, the friction nano-generator comprises a free friction nano-generator; the free friction nano generator is arranged on two relatively movable contact surfaces in the nacelle, a dielectric material is arranged on one contact surface, two electrodes are arranged on the other contact surface, and the two contact surfaces are relatively movable, so that the dielectric material and the two electrodes generate displacement friction, and the free friction nano generator generates electric energy.

In an alternative embodiment according to the first aspect, the free-friction nano-generator is arranged on a relatively movable contact surface of a fan housing of the nacelle.

In an alternative embodiment according to the first aspect, the dielectric material is arranged on a side of the fan housing where the hook lock is mounted at the bottom edge of the housing, and the two electrodes are arranged on a side of the fan housing where the latch pin is mounted at the bottom edge of the housing.

In an alternative embodiment according to the first aspect, the friction nano-generator comprises a rotary friction nano-generator; the rotary friction nano generator is arranged at the position of the ventilation grille at the bottom of the short cabin, so that air flow generated at the position of the ventilation grille drives the rotating disc of the rotary friction nano generator to rotate, and the rotary friction nano generator generates electric energy.

In an alternative embodiment according to the first aspect, the detection module includes an optical sensor for detecting whether the pin hole of the hook lock is transparent or not, so as to determine whether the latch in the short cabin is in an open state or a locked state.

In an alternative embodiment according to the first aspect, the detection module includes a force sensor, where the force sensor is disposed at a bolt where the latch pin is connected to the lock box, and when the latch pin is locked or unlocked with the hook, a load borne by the force sensor is different, so as to determine that the latch is in an opened state or a locked state.

The second aspect of the utility model also provides a nacelle comprising the self-powered latch detection system, wherein the self-powered latch detection system is used for detecting the latch state in the nacelle.

The self-powered lock catch detection system is used for detecting the lock catch state in the short cabin and comprises an energy supply module, a detection module, a signal processing module, a sending module and a receiving module. In the use process, the detection module detects that the lock catch in the nacelle is in a locking state or an opening state, and transmits information to the signal processing module, and the signal processing module converts the locking state into a first signal instruction and converts the opening state into a second signal instruction; and then the first signal instruction or the second signal instruction is sent to the receiving module through the sending module, so that a user can know the locking state in the short cabin through the receiving module. The energy supply module provided by the utility model is a friction nano generator, can reasonably utilize the mechanical energy of the nacelle structure and convert the mechanical energy into electric energy, further provides electric energy for the detection module, the signal processing module and the sending module, realizes real-time sensing monitoring and information transmission, effectively reduces the accident rate of the locking buckle and improves the safety of the aircraft on the basis of preventing the unlocking failure of the nacelle buckle by the traditional mechanical means. Meanwhile, the self-powered lock catch detection system does not need external power supply, is independent of an airplane energy source and an information system, avoids interference with other system control, ensures flight safety, and effectively solves the problem of great structural increment of the traditional mechanical system due to the fact that the adopted friction nano generator is light in weight; and the problems that the common sensor needs to be connected to the power supply and control network of the airplane and the complexity and the failure rate of the system are increased are effectively avoided.

The nacelle provided by the embodiment of the utility model also has the technical effects of realizing the real-time sensing monitoring and information transmission, effectively reducing the accident rate of the lock catch and improving the safety of the airplane on the basis of preventing the unlocking failure of the nacelle lock catch by the traditional mechanical means due to the self-powered lock catch detection system. Meanwhile, the problem of great structural increment of the traditional mechanical system is effectively solved; the technical effects of the common sensor needing to be connected into the power supply and control network of the airplane and the problems of increasing the complexity of the system and the failure rate of the system are effectively avoided.

Additional aspects of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and other objects, features and advantages of embodiments of the present utility model will become more readily apparent from the following detailed description with reference to the accompanying drawings. Embodiments of the utility model will now be described, by way of example and not limitation, in the figures of the accompanying drawings, in which:

FIG. 1 is a schematic diagram of a self-powered latch detection system according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a nacelle according to an embodiment of the utility model;

FIG. 3 is a schematic diagram of a latch according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a rotational friction nano-generator according to an embodiment of the present utility model at a first view angle;

fig. 5 is a schematic structural diagram of a rotational friction nano-generator according to an embodiment of the present utility model under a second view angle;

fig. 6 is a schematic partial structure of a free friction nano generator according to an embodiment of the present utility model.

Reference numerals illustrate:

10. a self-powered latch detection system; 11. an energy supply module; 111. rotating the friction nano-generator; 1111. a fan blade; 113. free friction nano-generator; 1131. a dielectric material; 1133. an electrode; 13. a detection module; 131. an installation position of the optical sensor; 133. the installation position of the force sensor; 15. a signal processing module; 17. a transmitting module; 19. a receiving module; 20. a nacelle; 21. a ventilation grille; 23. locking; 231. a hook lock; 233. a latch pin; 234. the front edge of the fan housing.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be a mechanical connection; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The aircraft nacelle is one of key components of an aircraft propulsion system, and consists of an air inlet channel, a fan cover, a thrust reverser system and a tail spraying device, and provides multiple functions of system protection, pneumatic rectification, noise reduction, ventilation, liquid discharge, maintenance and the like for an engine. In the inspection and maintenance of systems on engine fan casings (lubricating tanks, FADEC, etc.), it is often necessary to open the fan housing of the nacelle, which after inspection and maintenance has not been done correctly with the lock catch at the bottom of the fan housing, and which has resulted in the event of opening or flying off the fan housing during flight. The nacelle fan cover is located at a position close to the ground and located at a lower sight line, and the problem that the lock catch at the bottom of the fan cover cannot be correctly buckled is not easy to be found during maintenance operation and pre-flight around-flight inspection. Meanwhile, as the nacelle is positioned in the middle area of the wing, the fuselage and the engine, once the fan cover is opened in the air, related structures and systems of the wing, the fuselage or the engine can be damaged, and safety accidents are caused.

In the related art, aircraft manufacturers have employed various means to prevent fan housing fly-off events, such as the use of orange warning colors in conventional latch handles, reducing the frequency of fan housing opening during maintenance. For example, improved lockers are used which carry a key and a "remove before flight" indicator, and the key is required to unlock the lock. When the fan cowling is open, the key remains on the lock catch, and the key can be removed only when the lock catch is fully closed. When not in use, the shackle key must be stored with the landing gear pin in the cockpit. For example, a linkage mechanism is provided that when the fan housing latch is opened, a guard flag extends from the left side fan housing surface to alert ground personnel and crewmembers that the latch is not closed. For example, in order to meet the safety requirement, a lock catch cover plate system is additionally arranged at the lock line, and the lock catch cover plate can be closed and locked only after all locks are completely closed. However, the mechanical protection scheme not only increases the operation procedure, but also increases the weight of the structure, and also cannot avoid causing safety accidents.

In view of this, the embodiment of the utility model provides a self-powered latch detection system for detecting a latch state in a short cabin, where the self-powered latch detection system includes a power supply module, a detection module, a signal processing module, a sending module and a receiving module; the energy supply module is used for supplying electric energy to the detection module, the signal processing module and the sending module, and is a friction nano generator; the detection module is used for detecting whether the lock catch in the nacelle is in a locking state or an opening state, and the signal processing module is used for converting the locking state into a first signal instruction and converting the opening state into a second signal instruction; the sending module is used for sending the first signal instruction or the second signal instruction to the receiving module.

The self-powered lock catch detection system is used for detecting the lock catch state in the short cabin and comprises an energy supply module, a detection module, a signal processing module, a sending module and a receiving module. In the use process, the detection module detects that the lock catch in the nacelle is in a locking state or an opening state, and transmits information to the signal processing module, and the signal processing module converts the locking state into a first signal instruction and converts the opening state into a second signal instruction; and then the first signal instruction or the second signal instruction is sent to the receiving module through the sending module, so that a user can know the locking state in the short cabin through the receiving module. The energy supply module provided by the utility model is a friction nano generator, can reasonably utilize the mechanical energy of the nacelle structure and convert the mechanical energy into electric energy, further provides electric energy for the detection module, the signal processing module and the sending module, realizes real-time sensing monitoring and information transmission, effectively reduces the accident rate of the locking buckle and improves the safety of the aircraft on the basis of preventing the unlocking failure of the nacelle buckle by the traditional mechanical means. Meanwhile, the self-powered lock catch detection system does not need external power supply, is independent of an airplane energy source and an information system, avoids interference with control of other systems, ensures flight safety, and effectively solves the problem of great structural increment of the traditional mechanical system due to the fact that the adopted friction nano generator is light in weight; and the problems that the common sensor needs to be connected to the power supply and control network of the airplane and the complexity and the failure rate of the system are increased are effectively avoided.

Referring to fig. 1 to 6, a self-powered latch detection system 10 according to an embodiment of the present utility model is configured to detect a state of a latch 23 in a nacelle 20, where the self-powered latch detection system 10 includes a power supply module 11, a detection module 13, a signal processing module 15, a transmitting module 17, and a receiving module 19; the energy supply module 11 is used for providing electric energy for the detection module 13, the signal processing module 15 and the sending module 17, and the energy supply module 11 is a friction nano generator; the detection module 13 is configured to detect that a lock 23 in the nacelle 20 is in a locked state or an open state, and the signal processing module 15 is configured to convert the locked state into a first signal instruction and convert the open state into a second signal instruction; the sending module 17 is configured to send the first signal instruction or the second signal instruction to the receiving module 19.

The self-powered latch detection system 10 provided by the embodiment of the utility model is used for detecting the state of a latch 23 in a nacelle 20, and the self-powered latch detection system 10 comprises an energy supply module 11, a detection module 13, a signal processing module 15, a sending module 17 and a receiving module 19. In the use process, the detection module 13 detects that the lock catch 23 in the nacelle 20 is in a locking state or an opening state, and transmits information to the signal processing module 15, and the signal processing module 15 converts the locking state into a first signal instruction and converts the opening state into a second signal instruction; the first signal instruction or the second signal instruction is then sent to the receiving module 19 through the sending module 17, so that the user can know the state of the lock catch 23 in the nacelle 20 through the receiving module 19. The energy supply module 11 provided by the utility model is a friction nano generator, can reasonably utilize the mechanical energy of the nacelle 20 structure and convert the mechanical energy into electric energy, further provides electric energy for the detection module 13, the signal processing module 15 and the sending module 17, realizes real-time sensing monitoring and information transmission, effectively reduces the accident rate of the lock catch 23 on the basis of preventing the lock catch 23 of the nacelle 20 from being unlocked by the traditional mechanical means, and improves the safety of an airplane. Meanwhile, the self-powered lock catch detection system 10 does not need external power supply, is independent of an airplane energy source and an information system, avoids interference with other system control, ensures flight safety, and effectively solves the problem of great structural increment of the traditional mechanical system due to the fact that the adopted friction nano generator is light in weight; and the problems that the common sensor needs to be connected to the power supply and control network of the airplane and the complexity and the failure rate of the system are increased are effectively avoided.

In an alternative exemplary embodiment, the friction nano-generator comprises a free friction nano-generator 113; the free friction nano generator 113 is disposed on two opposite movable contact surfaces in the nacelle 20, a dielectric material 1131 is disposed on one contact surface, and two electrodes 1133 are disposed on the other contact surface, so that the two contact surfaces are relatively movable, and the dielectric material 1131 and the two electrodes 1133 generate displacement friction, so that the free friction nano generator 113 generates electric energy.

In particular, in the present embodiment, the friction nano-generator is configured to include the free friction nano-generator 113; and the free friction nano generator 113 is arranged on two relatively movable contact surfaces in the nacelle 20, a dielectric material 1131 is arranged on one contact surface, two electrodes 1133 are arranged on the other contact surface, and the two contact surfaces are relatively movable, so that the dielectric material 1131 and the two electrodes 1133 generate displacement friction, the free friction nano generator 113 generates electric energy, the mechanical energy generated by the mutual movement of the two relatively movable contact surfaces in the nacelle 20 is fully utilized, and the dielectric material 1131 and the electrode 1133 which can generate electricity through displacement friction are arranged on the two relatively movable contact surfaces, so that the electricity generation is simply and effectively realized.

Specifically, in an alternative exemplary embodiment, the free-friction nano-generator 113 is disposed on two relatively movable contact surfaces of the fan housing of the nacelle 20.

Further, in an alternative exemplary embodiment, the dielectric material 1131 is disposed at a side of the fan housing where the hook lock 231 is mounted at the bottom edge of the housing, and the two electrodes 1133 are disposed at a side of the fan housing where the latch pin 233 is mounted at the bottom edge of the housing.

It should be noted that, specifically, in this embodiment, the dielectric material 1131 is disposed on a side where the hook lock 231 is installed at the bottom edge of the housing of the fan housing, and the two electrodes 1133 are disposed on a side where the latch pin 233 is installed at the bottom edge of the housing of the fan housing, so that the two relatively movable contact surfaces where the latch 23 is disposed by using the fan housing are convenient for disposing the free friction nano-generator 113.

It should be noted that the specific location of the free-friction nano-generator 113 is not limited herein, and in other embodiments, the free-friction nano-generator 113 may be disposed on two other relatively movable contact surfaces of the nacelle 20 according to the specific requirements of the user. For example, the free-friction nano-generator 113 may also be disposed on two relatively movable contact surfaces between the leading edge 234 of the fan housing and the inlet duct.

In an alternative exemplary embodiment, the friction nano-generator comprises a rotating friction nano-generator 111; the rotating friction nano generator 111 is disposed at the position of the ventilation grille 21 at the bottom of the nacelle 20, so that the air flow generated at the position of the ventilation grille 21 drives the rotating disk of the rotating friction nano generator 111 to rotate, and the rotating disk of the rotating friction nano generator 111 rubs against the fixed disk of the rotating friction nano generator 111, thereby generating electric energy.

It should be noted that, specifically, in this embodiment, the rotating friction nano-generator 111 is disposed at the position of the ventilation grille 21 at the bottom of the nacelle 20, so that ventilation airflow at the position of the ventilation grille 21 can be effectively utilized, and then the ventilation airflow blows the upright fan blades 1111 of the rotating disc of the friction nano-generator, and then the rotating disc is driven to rub against the fixed disc of the rotating friction nano-generator, so that the friction nano-generator generates electric energy, the structural characteristics inside the nacelle 20 are fully utilized, and other driving components are not needed, the power generation is effectively realized, and meanwhile, the problem of weight increase caused by installing other driving components is avoided.

Specifically, in this embodiment, the rotational friction nano-generator 111 is a device for collecting energy of air flow at the vent cover and converting the energy into electric energy, the rotational friction nano-generator 111 is composed of a rotating disk with vertical blades 1111 and a fixed disk divided into a plurality of radial array sectors, two adjacent electrodes 1133 of the fixed disk are separated by a separation groove, and a friction layer is coated on the upper surface of the fixed disk. When the rotating disk rotates with the air flow, triboelectrification induces different charges on the electrode 1133 and the friction layer, thereby creating a potential difference between adjacent two metal electrodes 1133 on the stationary electrode 1133 disk and creating an electrical current.

In an alternative exemplary embodiment, the detection module 13 includes an optical sensor for detecting whether the pin hole of the hook latch 231 is light-transmitting, so as to determine whether the latch 23 in the nacelle 20 is in an opened state or a latched state.

In particular, in the present embodiment, the detection module 13 is configured to include an optical sensor for detecting whether the pin hole of the hook lock 231 is transparent, so as to determine that the lock catch 23 in the nacelle 20 is in an open state or a locked state. Specifically, an optical sensor may be disposed at the top of the latch pin 233 to detect whether light is transmitted at a pin hole where a tongue of the hook latch 231 is located. As shown in fig. 3, the mounting location 131 of the optical sensor is shown; it will be appreciated that the positions shown in the figures are approximate positions, and that in a specific installation process, it is sufficient that the optical sensor detects other positions of the pin hole, where light is transmitted or not. When the lock catch 23 is well fastened, the pin hole is opaque, and when the hook lock 231 is disengaged and the lock handle is put down by gravity, the pin hole is transparent, so that the locking state of the lock catch 23 is judged, and further whether the lock catch 23 is in the locking state or not is detected by the detection module 13.

In an alternative exemplary embodiment, the detection module 13 includes a force sensor, where the force sensor is disposed at a bolt where the latch pin 233 is connected to the lock box, and when the latch pin 233 is locked or unlocked with the hook lock 231, the load born by the force sensor is different to determine that the latch 23 is in the opened state or the locked state.

In particular, in the present embodiment, the detection module 13 is configured to include a force sensor, where the force sensor is disposed at a bolt where the latch pin 233 is connected to the lock box, as shown in fig. 3, which shows the mounting position 133 of the force sensor; it will be appreciated that the positions shown in the figures are approximate positions, and that other positions of the force sensor sensing shackle 23 at different pressures during locking and unlocking may be satisfied during a particular installation process. When the latch pin 233 is locked or unlocked with the hook lock 231, the load borne by the force sensor is different to determine that the latch 23 is in the opened state or the locked state. Specifically, a force sensor is disposed at a bolt where the latch pin 233 is connected to the lock case, and when the latch 23 is in the latched state, the hook latch 231 and the latch pin 233 are pulled tightly against each other, carrying a tensile load, and the force sensor detects a latching force, and the load carried by it increases. When the lock catch 23 is in the opened state, the lock catch pin 233 has only a pre-tightening force for installing the bolt, so that the lock catch 23 can be judged to be in the opened state or the locked state by judging that the load born by the force sensor is different. Specifically, it is also possible to determine whether the lock catch 23 is in the open state or the locked state by setting a threshold value of the load applied by the force sensor.

The utility model also provides a nacelle 20 comprising the self-powered latch detection system 10, wherein the self-powered latch detection system 10 is used for detecting the state of a latch 23 in the nacelle 20.

The nacelle 20 provided by the embodiment of the utility model also has the technical effects of realizing the real-time sensing monitoring and information transmission because the nacelle 20 comprises the self-powered lock catch detection system 10, effectively reducing the accident rate of the lock catch 23 and improving the safety of an airplane on the basis of preventing the lock catch 23 of the nacelle 20 from being unlocked by the traditional mechanical means. Meanwhile, the problem of great structural increment of the traditional mechanical system is effectively solved; the technical effects of the common sensor needing to be connected into the power supply and control network of the airplane and the problems of increasing the complexity of the system and the failure rate of the system are effectively avoided.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present utility model.

In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition.

Claims (8)

1. The self-powered lock catch detection system is used for detecting the lock catch state in the short cabin and is characterized by comprising an energy supply module, a detection module, a signal processing module, a sending module and a receiving module;

the energy supply module is used for supplying electric energy to the detection module, the signal processing module and the sending module, and is a friction nano generator;

the detection module is used for detecting whether the lock catch in the nacelle is in a locking state or an opening state, and the signal processing module is used for converting the locking state into a first signal instruction and converting the opening state into a second signal instruction;

the sending module is used for sending the first signal instruction or the second signal instruction to the receiving module.

2. The self-powered latch detection system of claim 1 wherein said friction nano-generator comprises a free friction nano-generator;

the free friction nano generator is arranged on two relatively movable contact surfaces in the nacelle, a dielectric material is arranged on one contact surface, two electrodes are arranged on the other contact surface, and the two contact surfaces are relatively movable, so that the dielectric material and the two electrodes generate displacement friction, and the free friction nano generator generates electric energy.

3. The self-powered latch detection system of claim 2 wherein said free-friction nano-generator is disposed on two relatively movable contact surfaces of a fan housing of said nacelle.

4. The self-powered latch detection system of claim 2 wherein the dielectric material is disposed on a side of the fan housing where the hook lock is mounted at the bottom edge of the housing, and the two electrodes are disposed on a side of the fan housing where the latch pin is mounted at the bottom edge of the housing.

5. The self-powered latch detection system of claim 1 wherein said friction nano-generator comprises a rotating friction nano-generator;

the rotary friction nano generator is arranged at the position of the ventilation grid at the bottom of the short cabin, so that air flow generated at the position of the ventilation grid drives the rotating disc of the rotary friction nano generator to rotate, and the rotating disc of the rotary friction nano generator rubs against the fixed disc of the rotary friction nano generator to generate electric energy.

6. The self-powered latch detection system of any of claims 1-5 wherein the detection module includes an optical sensor for detecting whether a pin aperture of a hook latch is light transmissive to determine whether a latch within the nacelle is in an open state or a latched state.

7. The self-powered latch detection system of any of claims 1-5 wherein the detection module includes a force sensor disposed at a bolt where a latch pin is connected to a latch box, the force sensor being subjected to a different load when the latch pin is latched or unlatched from a hook to determine whether the latch is in an open or latched state.

8. A nacelle comprising the self-powered latch detection system of any one of claims 1 to 5 for detecting a latch condition within the nacelle.