Leakage detection system and method and aircraft

Abstract

The invention discloses a leakage detection system and method and an aircraft, the leakage detection system is applied to the aircraft, the aircraft comprises a water supply device and a water consumption device, the water supply device and the water consumption device are connected through a water supply pipeline, and the system comprises an ultrasonic sensing device arranged on the water supply pipeline and used for sensing a water flow signal in the water supply pipeline; the water level monitoring device is arranged in the water supply device and used for sensing a water level signal in the water supply device; and the controller is used for performing leakage detection according to the water flow signal and the water level signal, and positioning a leakage area according to the water flow signal under the condition that a detection result represents that leakage occurs. The leakage area can be positioned, and the safety of the aircraft is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline detection, and in particular to a leakage detection system, method and aircraft. Background Art

[0002] The water system on an aircraft can provide sufficient water for different water-using devices. The water system usually includes a water supply pipeline that runs through the entire aircraft and is arranged under the floor. If the water system leaks, it will affect the safety of the aircraft. At present, the leakage problem of the water system is usually solved by adding a leak-proof sleeve to the pipe joint for passive protection. It cannot actively detect the leakage of the water system, and thus cannot be handled in a timely and effective manner. Summary of the invention

[0003] The present invention provides a leakage detection system, method and aircraft, aiming to effectively solve the above technical problems.

[0004] According to a first aspect of the present invention, the present invention provides a leakage detection system, which is applied to an aircraft, wherein the aircraft comprises a water supply device and a water use device, wherein the water supply device and the water use device are connected via a water supply pipeline, and the system comprises:

[0005] An ultrasonic sensing device, arranged on the water supply pipeline, for sensing a water flow signal in the water supply pipeline;

[0006] A water level monitoring device, arranged in the water supply device, for sensing a water level signal in the water supply device;

[0007] The controller is used to perform leakage detection according to the water flow signal and the water level signal, and locate the leakage area according to the water flow signal when the detection result indicates that a leakage has occurred.

[0008] According to a second aspect of the present invention, the present invention provides a leakage detection method based on the above leakage detection system, the method comprising:

[0009] Acquire a water flow signal and a water level signal, and perform leakage detection based on the water flow signal and the water level signal, wherein the water flow signal is sensed by an ultrasonic sensing device arranged on the water supply pipeline, and the water level signal is sensed by a water level monitoring device arranged in the water supply device;

[0010] When the detection result indicates that a leak has occurred, the leak area is located according to the water flow signal.

[0011] According to a third aspect of the present invention, the present invention provides an aircraft, comprising a water supply device, a water use device and a leakage detection system; wherein the water supply device and the water use device are connected via a water supply pipeline, and the leakage detection system is the above-mentioned leakage detection system.

[0012] Through one or more of the above embodiments of the present invention, at least the following technical effects can be achieved: the leakage detection system can sense the water flow signal in the water supply pipeline through the ultrasonic sensing device, and the water level monitoring device can sense the water level signal in the water supply device, and then the controller can realize leakage detection according to the water level signal and the water flow signal, and locate the leakage area according to the water flow signal when the detection result shows that a leakage occurs. Among them, the ultrasonic sensing device is small in size, easy to install, highly applicable, and has no additional resistance to the water flow inside the water supply pipeline. Through the ultrasonic sensing device and the water level monitoring device, it is possible to monitor in real time whether a leakage occurs and locate the leakage area. It is also possible to control the corresponding stop valve to close according to the leakage area to isolate the leakage area to reduce the impact of the leakage area on the aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The technical solutions and other beneficial effects of the present invention will be made apparent by describing in detail the specific embodiments of the present invention in conjunction with the accompanying drawings.

[0014] Figure 1 One of the structural schematic diagrams of the leakage detection system provided by an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the working principle of the ultrasonic sensing device provided by an embodiment of the present invention;

[0016] Figure 3 The second schematic diagram of the working principle of the ultrasonic sensing device provided by the embodiment of the present invention;

[0017] Figure 4 The second structural diagram of the leakage detection system provided by the embodiment of the present invention;

[0018] Figure 5 The third structural diagram of the leakage detection system provided by the embodiment of the present invention;

[0019] Figure 6 A schematic flow chart of a leakage detection method provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiment of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "and / or" herein is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " herein, unless otherwise specified, generally indicates that the associated objects before and after are in an "or" relationship.

[0022] A leakage detection system, method and aircraft provided by the present invention are described below in conjunction with the accompanying drawings.

[0023] See also Figures 1 to 5 An embodiment of the present invention provides a leakage detection system 10, which is applied to an aircraft. The aircraft includes a water supply device 20 and a water use device 30. The water supply device 20 and the water use device 30 are connected through a water supply pipeline 40. The leakage detection system 10 specifically includes an ultrasonic sensing device 100, a water level monitoring device 110, a controller 120 and a stop valve 130.

[0024] The ultrasonic sensing device 100 is arranged on the water supply pipeline 40 to sense the water flow signal in the water supply pipeline 40. Specifically, the ultrasonic sensing device 100 can be sleeved on the outer wall of the water supply pipeline 40, or fixed on the outer wall of the water supply pipeline 40 by means of a bandage, adhesive, etc. It is suitable for water supply pipelines 40 of different diameters and has no effect on the water supply pipeline 40. The ultrasonic sensing device 100 can be arranged at any position of the water supply pipeline 40, such as a position close to the water supply device 20 and / or the water use device 30, a middle position between the water supply device 20 and the water use device 30, etc. At least one ultrasonic sensing device 100 is arranged on each water supply pipeline 40, so that the controller 120 can obtain the water flow signal on each water supply pipeline 40, so as to realize leakage detection of all water supply pipelines 40 on the aircraft.

[0025] In addition, the ultrasonic sensing device 100 includes an ultrasonic generator and an ultrasonic receiver. Along the diameter direction of the water supply pipe 40, the projection of the ultrasonic generator and the projection of the ultrasonic receiver at least partially overlap, that is, the ultrasonic generator and the ultrasonic receiver are installed directly on the outer surface of the water supply pipe 40. The ultrasonic generator emits an ultrasonic signal, and the ultrasonic receiver receives the ultrasonic signal. Based on this, the ultrasonic generator and the ultrasonic receiver installed on the water supply pipe 40 can determine the final water flow signal based on the ultrasonic signal received by the ultrasonic receiver. Specifically, Figure 2 and Figure 3As shown, when the water flow in the water supply pipe 40 is stationary, the ultrasonic receiver can receive the ultrasonic signal emitted by the ultrasonic generator installed in the opposite position. Therefore, when the ultrasonic receiver can completely receive the ultrasonic signal, it is determined that the water flow in the water supply pipe 40 is stationary, and the water flow signal shows that the water flow is stationary. When the water in the water supply pipe 40 is flowing, the ultrasonic signal emitted by the ultrasonic generator will be beam-shifted due to the flow of water, so that the ultrasonic receiver cannot completely receive the ultrasonic signal. Therefore, when the ultrasonic receiver does not receive the complete ultrasonic signal, it is determined that the water in the water supply pipe 40 is flowing, and the water flow signal shows that the water is flowing.

[0026] The water level monitoring device 110 is disposed in the water supply device 20 and is used to sense the water level signal in the water supply device 20. Specifically, the water level monitoring device 110 can be different types of water level sensors, which are used to measure the water level change in the water supply device 20 to obtain the water level signal.

[0027] The controller 120 is used to perform leakage detection according to the water flow signal and the water level signal, and locate the leakage area according to the water flow signal when the detection result indicates that a leakage occurs. Specifically, the controller 120 is connected to the ultrasonic sensing device 100, the water level monitoring device 110 and the stop valve 130 respectively. After receiving the water flow signal and the water level signal, the controller 120 determines whether a leakage occurs, and locates the leakage area according to the water flow signal when it is determined that a leakage occurs. For example, when the water level signal shows that the water level in the water supply device 20 changes and all water flow signals show that the water flow is still, or when the water level does not change but a certain water flow signal shows that there is water flowing in the pipeline, it is determined that a leakage occurs; when the water level signal shows that the water level does not change and all water flow signals show that the water flow is still, or when the water level changes and at least one of the water flow signals shows that water flows, it is determined that no leakage occurs. After determining that a leakage occurs, the leakage area is determined from each water supply pipeline 40 and the water supply device 20 according to the water flow signal; after determining that no leakage occurs, the water flow signal and the water level signal at the next moment are obtained to detect the leakage in real time.

[0028] The stop valve 130 is arranged on the water supply pipeline 40, and the controller 120 is also used to control the stop valve 130 to close according to the leakage area. Specifically, at least one stop valve 130 is arranged on each water supply pipeline 40, which can be arranged at any position of the water supply pipeline 40, such as around the ultrasonic sensing device 100, near the water supply device 20, etc. After determining the leakage area, the controller 120 controls the corresponding stop valve 130 to close. For example, after determining that the water supply pipeline B is the leakage area among the water supply pipelines A, B, and C, the controller 120 controls the stop valve 130 on the water supply pipeline B to close, and reminds the manager to maintain the water supply pipeline B, while the remaining stop valves 130 remain fully open, so that other water supply pipelines 40 and water-using devices 30 can still work normally.

[0029] In addition, the water supply device 20 in the aircraft can specifically be a water tank or other device capable of storing water, and multiple devices can be provided; the water use device 30 can be provided in different places such as a kitchen and a washroom.

[0030] The leakage detection system 10 provided by the embodiment of the present invention can sense the water flow signal in the water supply pipeline 40 through the ultrasonic sensing device 100, and the water level monitoring device 110 can sense the water level signal in the water supply device 20, and then the controller 120 can realize leakage detection according to the water level signal and the water flow signal, and locate the leakage area according to the water flow signal when the detection result shows that a leakage occurs. Among them, the ultrasonic sensing device 100 is small in size, easy to install, highly applicable, and has no additional resistance to the water flow inside the water supply pipeline 40. The ultrasonic sensing device 100 and the water level monitoring device 110 can monitor whether a leakage occurs in real time and locate the leakage area. The corresponding stop valve 130 can also be controlled to close according to the leakage area to isolate the leakage area to reduce the impact of the leakage area on the aircraft.

[0031] In some embodiments of the present invention, Figure 4 As shown, at least two ultrasonic sensing devices 100 are arranged on the water supply pipeline 40, and the controller 120 includes a signal acquisition unit, a leakage determination unit, and a leakage positioning unit. Schematically, two ultrasonic sensing devices 100 are arranged on the water supply pipeline 40, one is close to the water supply device 20, and the other is close to the water use device 30. The two ultrasonic sensing devices 100 can obtain water flow signals at two positions in the same water supply pipeline 40. In another embodiment, the ultrasonic sensing devices 100 are arranged on the water supply pipeline 40 according to a preset interval, and each ultrasonic sensing device 100 can monitor the water flow signals at different positions on the same water supply pipeline 40.

[0032] The signal acquisition unit is used to acquire the water level signal and at least two water flow signals corresponding to each water supply pipeline 40. That is, the signal acquisition unit obtains the water level signal in the water supply device 20 and the water flow signals sensed by all ultrasonic sensing devices 100 on each water supply pipeline 40. When acquiring the water flow signal, the signal acquisition unit can also acquire the water supply pipeline 40 corresponding to the water flow signal and the position information of the corresponding ultrasonic sensing device 100 on the water supply pipeline 40.

[0033] The leakage determination unit is used to determine that the detection result is a leakage when the water level signal is characterized by a water level change and some of the water flow signals in at least two water flow signals on the same water supply pipeline 40 are characterized by static water flow and the remaining water flow signals are characterized by water flow, or when the water level signal is characterized by a water level change and all water flow signals are characterized by static water flow. Specifically, if the water level changes, it is determined that there may be a water-using device 30 using water. At this time, one or more water supply pipelines 40 of all water supply pipelines 40 should have water flowing inside. In the absence of leakage, all ultrasonic sensing devices 100 on one or more water supply pipelines 40 using water can sense water flowing. If all ultrasonic sensing devices 100 do not sense water flowing or some ultrasonic sensing devices 100 on the same water supply pipeline 40 sense water flowing and the remaining sense static water flow, it is determined that a leakage has occurred.

[0034] The leakage locating unit is used to determine the leakage area on the water supply pipeline 40 according to the positions corresponding to the adjacent ultrasonic sensing devices 100 of the water flow signals characterized by still water flow and the water flow signals characterized by flowing water when the detection result shows that a leakage has occurred; if all the water flow signals are characterized by still water flow, the water supply device 20 is determined to be the leakage area.

[0035] Specifically, if the water flow signals on all water supply pipelines 40 show that the water flow is still, and the water level signal shows that the water level changes, at this time, the water supply device 20 is determined to be a leakage area; if after the water level changes, part of the water flow signals on one water supply pipeline 40 or multiple water supply pipelines 40 show that the water flows, and the remaining part shows that the water flows are still, and the area between the ultrasonic sensing device 100 showing that the water flows on the water supply pipeline 40 and the ultrasonic sensing device 100 showing that the water flows are still is determined as the leakage area. Schematically, if two ultrasonic sensing devices 100 are arranged on a water supply pipeline 40, when the ultrasonic sensing device 100 close to the water supply device 20 senses that the water flows, and the ultrasonic sensing device 100 close to the water use device 30 senses that the water flows are still, the area between the two ultrasonic sensing devices 100 is determined to be the leakage area. The more ultrasonic sensing devices 100 are arranged on each water supply pipeline 40, the more accurate the leakage area obtained by the positioning thereof, which can be specifically set according to the needs, and the present invention is not limited to this.

[0036] In some embodiments of the present invention, the controller also includes a water flow determination unit, which can, when the detection result is a leakage, compare the water flow signal characterized by water stillness with a preset ultrasonic signal strength threshold, and determine that the detection result is a first flow leakage when the water flow signal is greater than or equal to the preset ultrasonic signal strength threshold; and determine that the detection result is a second flow leakage when the water flow signal is less than the preset ultrasonic signal strength threshold.

[0037] The ultrasonic signal strength threshold can be set based on experience. When the water flow signal characterized by still water is greater than or equal to the preset ultrasonic signal strength threshold, it means that the water flow through the corresponding water supply pipeline is small or even nonexistent, thereby determining that a large leak has occurred, that is, a first flow rate leak. When the water flow signal characterized by still water is less than the preset ultrasonic signal strength threshold, it means that the water flow through the corresponding water supply pipeline is large, but the ultrasonic receiver does not receive the original complete ultrasonic signal. At this time, it is a small flow rate leak, which is a second flow rate leak.

[0038] After determining that the first flow rate is leaking, the controller can control the corresponding stop valve to shut down according to the determined leakage area. After determining that the second flow rate is leaking, the controller can generate second flow rate leakage warning information according to the determined leakage area to remind relevant personnel to perform maintenance in time.

[0039] In some embodiments of the present invention, the water supply pipeline 40 includes a main pipeline and a branch pipeline. One end of the main pipeline is connected to the water supply device 20, and the other end is connected to at least one branch pipeline. The branch pipeline is connected to the water use device 30. The main pipeline and the branch pipeline each include multiple ones.

[0040] The ultrasonic sensing device 100 includes a first sensing device arranged on the main pipe and a second sensing device arranged on the branch pipe. The first sensing device senses and obtains a first water flow signal, and the second sensing device senses and obtains a second water flow signal. One or more first sensing devices can be arranged on the main pipe, and similarly, one or more second sensing devices can also be arranged on the branch pipe. An example of setting a first sensing device and a second sensing device is given below. The first water flow signal corresponds to at least one second water flow signal, which means that according to the connection relationship between the main pipe and the branch pipe, it can be determined that the first water flow signal on a main pipe corresponds to the second water flow signal on the branch pipe on the main pipe.

[0041] The signal acquisition unit is used to acquire a water level signal, a first water flow signal and a second water flow signal. If there are multiple main pipes, the signal acquisition unit acquires multiple first water flow signals. Similarly, if there are multiple branch pipes, the signal acquisition unit acquires multiple second water flow signals.

[0042] The leakage determination unit is used to determine that the detection result is a leakage when the water level signal is characterized by water level change and the first water flow signal and the second water flow signal are characterized by still water flow, or when the water level signal is characterized by water level change and the first water flow signal is characterized by water flow and the corresponding second water flow signal is characterized by still water flow.

[0043] The leakage locating unit is used to determine that the corresponding branch pipeline is a leakage area when the detection result is a leakage. If the first water flow signal represents water flow and the corresponding second water flow signal represents water stillness, the corresponding branch pipeline is determined to be a leakage area; if the water level signal represents water level change and both the first water flow signal and the second water flow signal represent water stillness, the water supply device 20 is determined to be a leakage area.

[0044] In this embodiment, the accuracy of leakage judgment varies according to the number of second sensing devices set on the branch pipeline. The following specifically describes setting one second sensing device and setting more than two second sensing devices.

[0045] When at least two second sensing devices are provided on the branch pipeline, the leakage determination unit determines that a leakage has occurred when the water level signal is characterized by a water level change and the first water flow signal is characterized by water flow, and in the second water flow signal corresponding to the first water flow signal being characterized by water flow, part of the second water flow signals on the same branch pipeline are characterized by still water flow, and the remaining second water flow signals are characterized by water flow; the leakage locating unit determines the branch pipeline corresponding to part of the second water flow signals being characterized by still water flow and the remaining second water flow signals being characterized by water flow as a leakage area.

[0046] When a second sensing device is provided on the branch pipeline, the leakage determination unit determines that a leakage has occurred when the water level signal is characterized by a water level change, the first water flow signal is characterized by water flow, and the second water flow signal corresponding to the first water flow signal characterized by water flow is characterized by stationary water flow; the leakage locating unit regards the branch pipeline connected to the corresponding main pipeline as a leakage area.

[0047] That is, when a second sensing device is provided on the branch pipeline, under the premise of water level change, if all the first water flow signals and all the second water flow signals show that the water flow is still, or some of the first water flow signals show that the water is flowing and the second water flow signals related to the first water flow signals showing that the water is flowing all show that the water is still, it is determined that a leak has occurred. On this basis, if all the first water flow signals and all the second water flow signals show that the water is still, it is determined that the water supply device 20 has a leak; if some of the first water flow signals show that the water is flowing and the second water flow signals related to these water flows show that the water is still, it is determined that all the branch pipelines connected to the main pipeline showing the water flow are the leakage area, and the determined leakage area has a larger range.

[0048] like Figure 5As shown, in an aircraft, the ultrasonic sensing device 100 numbered 1 and the ultrasonic sensing device 100 numbered 2 arranged on the main pipeline are first sensing devices, and the remaining ultrasonic sensing devices 100 numbered 3 to 6 arranged on the branch pipeline are all second sensing devices, the water-using devices 30 numbered 1 and 2 are located in the front fuselage area, and the water-using devices 30 numbered 3 and 4 are located in the rear fuselage area, and the stop valves numbered 1 and 2 are respectively arranged on the two main pipelines. Within a predetermined time, under the premise that the water level changes, if the first water flow signal of the ultrasonic sensing device 100 numbered 1 received by the controller shows that water flows and the corresponding second water flow signals of the ultrasonic sensing devices 100 numbered 3 and 4 both show that the water flow is still, the controller determines that the branch pipeline of the front fuselage is a leakage area. Similarly, if the first water flow signal of the ultrasonic sensing device 100 numbered 2 received by the controller shows that water flows and the corresponding second water flow signals of the ultrasonic sensing devices 100 numbered 5 and 6 both show that the water flow is still, the controller determines that the branch pipeline of the rear fuselage is a leakage area. If neither the ultrasonic sensing devices 100 numbered 1 nor 2 senses water flow, the water supply device 20 is determined to be a leaking area. In the case of a branch pipeline leak in the front fuselage, the controller can control the shutoff valve numbered 1 to be closed to prevent water leakage in the front fuselage area from affecting aircraft safety, while ensuring normal water use in the rear fuselage area. Similarly, in the case of a branch pipeline leak in the rear fuselage, the controller can control the shutoff valve numbered 2 to be closed to prevent water leakage in the rear fuselage area from affecting aircraft safety, while ensuring normal water use in the front fuselage area. In the case of a leak in the water supply device 20, the controller will send a water supply leak warning message to the crew to notify the crew to perform timely maintenance on the water supply device 20 to restore normal water use.

[0049] When at least two or more second sensing devices are provided on the branch pipeline, similarly, if all the first water flow signals and all the second water flow signals show that the water flow is still, the leakage area is determined to be the water supply device 20. If part of the first water flow signals show that water is flowing, and part of the second water flow signals related to the first water flow signals showing that water is flowing show that the water flow is still and the rest show that water is flowing, the branch pipeline where the part of the second water flow signals shows that the water flow is still and the rest shows that water is flowing is determined to be the leakage area, and the leakage area is further located more accurately on the leaking branch pipeline according to the installation position information of the second sensing devices corresponding to the two adjacent second water flow signals showing that the water flow is still and the water flow is flowing.

[0050] In addition, the stop valve 130 can also be set on the branch pipeline and the main pipeline. When the entire branch pipeline area is determined to be a leakage area, the controller 120 can control the stop valve 130 on the main pipeline to be closed. When a branch pipeline is determined to be a leakage area, the controller 120 can control the stop valve 130 on the corresponding branch pipeline to be closed.

[0051] The leakage detection system 10 provided in the embodiment of the present invention can accurately locate the leakage area and take timely measures.

[0052] In some embodiments of the present invention, the controller 120 further includes an early warning unit, which generates water supply leakage early warning information when the leakage area is the water supply device 20, so as to remind the management personnel to promptly handle the water supply device 20. The early warning unit may also generate pipeline water supply leakage early warning information when the leakage area is a certain water supply pipeline 40, so as to remind the management personnel to promptly maintain the leaking water supply pipeline 40.

[0053] In some embodiments of the present invention, the controller 120 can also detect the water flow rate to locate the leakage in a small flow scenario and perform subsequent automatic processing.

[0054] See also Figure 6 The present invention also provides a leakage detection method, which comprises the following steps:

[0055] S601, obtaining a water flow signal and a water level signal, and performing leakage detection according to the water flow signal and the water level signal to obtain a detection result.

[0056] The detection result shows whether there is leakage in the water supply device 20 and the water supply pipeline 40 , the water flow signal is sensed by the ultrasonic sensing device 100 arranged on the water supply pipeline 40 , and the water level signal is sensed by the water level monitoring device 110 arranged in the water supply device 20 .

[0057] S602: When the detection result indicates that a leak has occurred, locate the leak area according to the water flow signal.

[0058] When the detection result shows that no leakage occurs, the water flow signal and water level signal at the next moment are obtained to perform a new leakage detection.

[0059] In some embodiments of the present invention, leak detection is performed based on a water flow signal and a water level signal, including:

[0060] A water level signal and at least two water flow signals corresponding to each water supply pipeline 40 are obtained.

[0061] When the water level signal is characterized by water level change and some of the at least two water flow signals on the same water supply pipeline 40 are characterized by still water flow and the remaining water flow signals are characterized by water flow, or when the water level signal is characterized by water level change and all water flow signals are characterized by still water flow, the detection result is determined to be a leak.

[0062] When the detection result indicates a leak, locate the leak area based on the water flow signal, including:

[0063] When the detection result indicates that a leakage has occurred, if some of the water flow signals on the same water supply pipeline 40 are characterized by still water flow and the remaining water flow signals are characterized by flowing water, the leakage area is determined on the water supply pipeline 40 based on the corresponding positions of the adjacent ultrasonic sensing devices 100 of the water flow signals characterized by still water flow and the water flow signals characterized by flowing water; if all the water flow signals are characterized by still water flow, the water supply device 20 is determined to be the leakage area.

[0064] In some embodiments of the present invention, the method further comprises:

[0065] When the detection result is a leakage, the water flow signal characterized by still water is compared with a preset ultrasonic signal strength threshold, and when it is greater than or equal to the preset ultrasonic signal strength threshold, the detection result is determined to be a first flow leakage; when it is less than the preset ultrasonic signal strength threshold, the detection result is determined to be a second flow leakage.

[0066] In some embodiments of the present invention, the method further comprises: when the detection result is a first flow rate leakage, closing the stop valve 130 on the leaking water supply pipeline 40 according to the leakage area.

[0067] When the detection result is a second flow leakage, second flow leakage warning information is generated according to the leakage area.

[0068] When the water supply device is in a leakage area, water supply leakage warning information is generated.

[0069] The leakage detection method provided in the embodiment of the present invention has different measures for different leakage situations. For example, in the case of a large flow leakage, the leakage is isolated by controlling the stop valve 130. When the leakage area is the water supply device 20, water supply leakage warning information is generated to remind management personnel to deal with it in time. In the case of a small flow leakage, a second flow leakage warning information is generated to remind management personnel to maintain.

[0070] Based on any of the above embodiments, another embodiment of the present invention further provides an aircraft, which includes a water supply device 20, a water use device 30 and a leakage detection system 10; wherein the water supply device 20 and the water use device 30 are connected through a water supply pipeline 40, and the leakage detection system 10 is the leakage detection system 10 of any of the above embodiments.

[0071] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0072] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiment.

[0073] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A leak detection system, characterized in that: Applied to an aircraft, the aircraft includes a water supply device and a water use device, the water supply device and the water use device are connected through a water supply pipeline, and the system includes: An ultrasonic sensing device, arranged on the water supply pipeline, for sensing a water flow signal in the water supply pipeline; A water level monitoring device, arranged in the water supply device, for sensing a water level signal in the water supply device; The controller is used to perform leakage detection according to the water flow signal and the water level signal, and locate the leakage area according to the water flow signal when the detection result indicates that a leakage has occurred.

2. The system according to claim 1, characterized in that The system further comprises a stop valve, which is arranged on the water supply pipeline. The controller is further used for controlling the stop valve to close according to the leakage area.

3. The system according to claim 1, characterized in that At least two ultrasonic sensors are arranged on the water supply pipeline, and the controller comprises a signal acquisition unit, a leakage determination unit and a leakage positioning unit; The signal acquisition unit is used to acquire the water level signal and at least two water flow signals corresponding to each water supply pipeline; The leakage determination unit is used to determine that the detection result is a leakage when the water level signal is characterized by a water level change and some of the water flow signals of at least two water flow signals on the same water supply pipeline are characterized by water flow stagnation and the remaining water flow signals are characterized by water flow, or when the water level signal is characterized by a water level change and all the water flow signals are characterized by water flow stagnation; The leakage locating unit is used to determine the leakage area on the water supply pipeline according to the positions corresponding to the ultrasonic sensing devices of the adjacent water flow signals characterized by still water flow and the water flow signals characterized by flowing water when the detection result is a leakage; if all water flow signals are characterized by still water flow, the water supply device is determined to be the leakage area.

4. The system according to claim 3, characterized in that The water supply pipeline includes a main pipeline and a branch pipeline, one end of the main pipeline is connected to the water supply device, and the other end is connected to at least one branch pipeline, and the branch pipeline is connected to the water device, and the ultrasonic sensing device includes a first sensing device arranged on the main pipeline and a second sensing device arranged on the branch pipeline, the first sensing device senses and obtains a first water flow signal, and the second sensing device senses and obtains a second water flow signal, and the first water flow signal corresponds to at least one second water flow signal; The signal acquisition unit is used to acquire the water level signal, the first water flow signal and the second water flow signal; The leakage determination unit is used to determine that the detection result is a leakage when the water level signal is characterized by a water level change and the first water flow signal and the second water flow signal are characterized by a stationary water flow, or when the water level signal is characterized by a water level change and the first water flow signal is characterized by a water flow and the corresponding second water flow signal is characterized by a stationary water flow; The leakage locating unit is used to determine that the corresponding branch pipeline is a leakage area when the detection result is a leakage, if the first water flow signal is characterized by water flow and the corresponding second water flow signal is characterized by still water flow; if the water level signal is characterized by water level change and both the first water flow signal and the second water flow signal are characterized by still water flow, then the water supply device is determined to be a leakage area.

5. The system according to claim 4, characterized in that When at least two second sensing devices are provided on the branch pipeline, the leakage determination unit determines that the detection result is leakage when the water level signal is characterized by water level change and the first water flow signal is characterized by water flow, and part of the second water flow signals on the same branch pipeline corresponding to the first water flow signal characterized by water flow are characterized by water stillness and the remaining second water flow signals are characterized by water flow; the leakage locating unit determines the branch pipeline corresponding to part of the second water flow signals characterized by water stillness and the remaining second water flow signals characterized by water flow as the leakage area; When a second sensing device is provided on the branch pipeline, the leakage determination unit determines that a leakage has occurred when the water level signal is characterized by a water level change, the first water flow signal is characterized by water flow, and the second water flow signal corresponding to the first water flow signal characterized by water flow is characterized by stationary water flow; the leakage locating unit identifies the branch pipeline connected to the corresponding main pipeline as a leakage area.

6. The system according to claim 3, characterized in that The controller further comprises an early warning unit, which generates water supply leakage early warning information when the leakage area is a water supply device, so as to remind the management personnel to handle the water supply device in time.

7. The system according to claim 3, characterized in that The controller further comprises: A water flow determination unit is used to compare the water flow signal characterized by water stillness with a preset ultrasonic signal strength threshold when the detection result is a leakage, and to determine that the detection result is a first flow leakage when the water flow signal is greater than or equal to the preset ultrasonic signal strength threshold; and to determine that the detection result is a second flow leakage when the water flow signal is less than the preset ultrasonic signal strength threshold.

8. The system according to any one of claims 1 to 7, characterized in that: The ultrasonic sensing device comprises an ultrasonic generator and an ultrasonic receiver. Along the diameter direction of the water supply pipeline, the projection of the ultrasonic generator and the projection of the ultrasonic receiver at least partially overlap.

9. A leakage detection method based on the leakage detection system according to any one of claims 1 to 8, characterized in that: The method comprises: Acquire a water flow signal and a water level signal, and perform leakage detection based on the water flow signal and the water level signal, wherein the water flow signal is sensed by an ultrasonic sensing device arranged on the water supply pipeline, and the water level signal is sensed by a water level monitoring device arranged in the water supply device; When the detection result indicates that a leak has occurred, the leak area is located according to the water flow signal.

10. The method according to claim 9, characterized in that The leak detection according to the water flow signal and the water level signal comprises: Acquire the water level signal and at least two water flow signals corresponding to each water supply pipeline; When the water level signal is characterized by a water level change and some of the water flow signals in at least two water flow signals on the same water supply pipeline are characterized by still water flow and the remaining water flow signals are characterized by water flow, or when the water level signal is characterized by a water level change and all the water flow signals are characterized by still water flow, determining that the detection result is a leak; When the detection result indicates that leakage has occurred, locating the leakage area according to the water flow signal includes: When the detection result is a leakage, if some of the water flow signals on the same water supply pipeline are characterized by still water flow and the remaining water flow signals are characterized by flowing water, the leakage area is determined on the water supply pipeline based on the positions corresponding to the adjacent ultrasonic sensing devices of the water flow signals characterized by still water flow and the water flow signals characterized by flowing water; if all the water flow signals are characterized by still water flow, the water supply device is determined to be the leakage area.

11. The method according to claim 10, characterized in that The method further comprises: When the detection result is a leakage, the water flow signal characterized by still water is compared with a preset ultrasonic signal strength threshold, and when it is greater than or equal to the preset ultrasonic signal strength threshold, the detection result is determined to be a first flow leakage; when it is less than the preset ultrasonic signal strength threshold, the detection result is determined to be a second flow leakage.

12. The method according to claim 11, characterized in that The method also includes: When the detection result is a first flow rate leakage, closing the stop valve on the leaking water supply pipeline according to the leakage area; When the detection result is a second flow leakage, generating second flow leakage warning information according to the leakage area; When the water supply device is in a leakage area, water supply leakage warning information is generated.

13. An aircraft, characterized in that: It comprises a water supply device, a water use device and a leakage detection system; wherein the water supply device and the water use device are connected via a water supply pipeline, and the leakage detection system is the leakage detection system as claimed in any one of claims 1 to 8.

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