Apron Emergency System, Method and Apron Fuel Supply System

Abstract

The present application provides an apron emergency system, a method, and an apron fuel supply system. The apron emergency system includes an emergency switch circuit, a switch detection circuit, a plurality of wireless positioning devices, and a main control circuit. The emergency switch circuit includes a plurality of emergency switches connected in series; the switch detection circuit is respectively connected to each emergency switch, detects the on / off state of each emergency switch and outputs corresponding on / off state information. The plurality of wireless positioning devices are connected to the switch detection circuit and correspond to the emergency switches one by one. Each wireless positioning device receives the on / off state information of the corresponding emergency switch, and sends the on / off state information of the emergency switch and the switch identity identifier; the main control circuit is wirelessly connected to the plurality of wireless positioning devices respectively, receives the on / off state information of each emergency switch and the switch identity identifier, and determines the on / off state of each emergency switch according to the on / off state information of each emergency switch and the switch identity identifier. The apron fuel supply system includes the apron emergency system. The apron fuel supply can be restored relatively quickly.

Description

Technical Field

[0001] This application relates to the field of apron network management, and particularly to an apron emergency system, method, and apron fuel supply system. Background Art

[0002] The apron is the core area of airport transportation operations. This area can be used for aircraft to park for boarding and alighting passengers, loading and unloading goods, and providing various ground services to the aircraft (such as aircraft maintenance, water supply, refueling, power supply, catering, cleaning, etc.). The apron usually includes multiple parking positions, each parking position can be used to park an aircraft, and each parking position is configured with a fuel pump to refuel the aircraft. Each parking position can be respectively configured with different fuel pumps, or multiple adjacent parking positions can share a fuel pump. Summary of the Invention

[0003] This application provides an improved apron emergency system, method, and apron fuel supply system, which can quickly restore apron fuel supply.

[0004] This application provides an apron emergency system. The apron emergency system includes an emergency switch circuit. The emergency switch circuit includes a plurality of serially connected emergency switches. The emergency switches correspond to the parking positions on the apron and include:

[0005] A switch detection circuit, respectively connected to each of the emergency switches, for detecting the on / off states of each of the emergency switches and outputting corresponding on / off state information;

[0006] A plurality of wireless positioning devices, connected to the switch detection circuit and corresponding to the emergency switches one by one. Each of the wireless positioning devices is used to receive the on / off state information of the corresponding emergency switch and send the on / off state information of the emergency switch and the switch identity identifier; and

[0007] A main control circuit, wirelessly connected to the plurality of wireless positioning devices respectively, for receiving the on / off state information of each of the emergency switches and the switch identity identifier, and determining the on / off states of each of the emergency switches according to the on / off state information of each of the emergency switches and the switch identity identifier.

[0008] Further, the detection sub-circuit includes a plurality of detection sub-circuits. The plurality of detection sub-circuits are respectively connected between the corresponding wireless positioning devices and the emergency switches. Each of the detection sub-circuits is used to detect the on / off state of the corresponding emergency switch and send the on / off state information of the emergency switch to the wireless positioning device according to the on / off state of the emergency switch.

[0009] Further, the detection sub - circuit includes a current detection circuit and a detection controller. The current detection circuit is connected in parallel with the emergency switch. The detection controller includes a current detection terminal and a control terminal. The current detection terminal is connected to the current detection circuit, and the control terminal is connected to the wireless positioning device. The detection controller is configured to determine the on - off state of the emergency switch according to the electrical signal collected by the current detection terminal, and send the on - off state information of the emergency switch to the wireless positioning device through the control terminal.

[0010] Further, the switch codes of different emergency switches are different. The detection sub - circuit is configured to determine the switch identity identifier of the emergency switch according to the switch code of the corresponding emergency switch, and send the switch identity identifier of the emergency switch to the wireless positioning device.

[0011] Further, at least two different emergency switches are arranged at different positions on the apron. The main control circuit is further configured to determine the apron position where the emergency switch corresponding to the switch identity identifier is located according to the corresponding relationship between the switch identity identifier of each emergency switch and the apron position where it is located.

[0012] Further, the apron emergency system includes a display device. The display device is connected to the main control circuit, and is configured to display an apron map, and is further configured to mark each emergency switch and the on - off state of each emergency switch at the corresponding position on the apron map according to the apron position where each emergency switch is located and the on - off state of each emergency switch.

[0013] Further, the apron emergency system includes an alarm system. The alarm system is connected to the main control circuit, and is configured to alarm for the disconnected emergency switch according to the on - off state of each emergency switch determined by the main control circuit.

[0014] This application provides an apron fuel supply system, including:

[0015] The apron emergency system as described in any one of the above;

[0016] An oil pump control circuit, connected to the fuel pump, for controlling the operation of the fuel pump. The main control circuit of the apron emergency system is connected to the oil pump control circuit. The main control circuit is configured to control the oil pump control circuit to stop working when it is determined that any one of the emergency switches is disconnected.

[0017] The present application provides a ramp emergency method, which is applied to a ramp emergency system. The ramp emergency system includes a plurality of emergency switches connected in series, a plurality of wireless positioning devices, a switch detection circuit, and a main control circuit. The switch detection circuit is respectively connected to each of the emergency switches. The plurality of wireless positioning devices are connected to the switch detection circuit and are respectively connected to the emergency switches in a one-to-one correspondence. The main control circuit is wirelessly connected to the plurality of wireless positioning devices respectively. The ramp emergency method includes:

[0018] Detecting the on / off states of each of the emergency switches through the switch detection circuit and outputting corresponding on / off state information;

[0019] Receiving, by each of the wireless positioning devices, the on / off state information of the corresponding emergency switch, and sending the on / off state information of the emergency switch and the switch identity identifier;

[0020] Receiving, by the main control circuit, the on / off state information of the emergency switch and the switch identity identifier, and determining the on / off states of each of the emergency switches according to the on / off state information of the emergency switch and the switch identity identifier.

[0021] In some embodiments of the present application, the ramp emergency system includes a wireless positioning device and a main control circuit that are respectively connected to the emergency switches in a one-to-one correspondence. The wireless positioning device can send the switch identity identifier and the on / off state information of the corresponding connected emergency switch to the main control circuit, so that the main control circuit can determine the on / off states of each emergency switch. In this way, the disconnected emergency switch can be quickly checked, and thus the ramp fuel supply can be quickly restored. Description of the Drawings

[0022] Figure 1 is a schematic diagram of a ramp fuel supply system provided by an embodiment of the present application;

[0023] Figure 2 is Figure 1 a circuit diagram of an embodiment of the ramp emergency system in

[0024] Figure 3 is Figure 1 a circuit diagram of another embodiment of the ramp emergency system in

[0025] Figure 4 is Figure 1 a circuit diagram of another embodiment of the ramp emergency system in

[0026] Figure 5 is Figure 1 a circuit diagram of another embodiment of the ramp emergency system in

[0027] Figure 6It is a flowchart of the apron emergency method provided by an embodiment of the present application. Detailed implementation manners

[0028] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are only examples of devices consistent with some aspects of the present application as detailed in the appended claims.

[0029] The terms used in the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. Unless otherwise defined, the technical terms or scientific terms used in the present application should have the ordinary meaning understood by those of ordinary skill in the art to which the present application belongs. The terms "a" or "an" and the like used in the specification and claims of the present application do not indicate a limitation in quantity, but rather indicate the presence of at least one. "Plurality" includes two, which is equivalent to at least two. The terms "including" or "comprising" and the like mean that the elements or objects appearing before "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. The terms "connected" or "coupled" and the like are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect. The singular forms "a", "the" and "said" used in the specification and appended claims of the present application are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0030] Figure 1 It is a schematic diagram of an apron fuel supply system 100 provided by an embodiment of the present application. The apron fuel supply system 100 is used to control the fuel pump 13 to supply fuel to an aircraft. Refer to Figure 1 , the apron fuel supply system 100 includes an apron emergency system 11 and an oil pump control circuit 12.

[0031] The apron emergency system 11 includes an emergency switch circuit 111, a switch detection circuit 1140, a plurality of wireless positioning devices 112, and a main control circuit 113. The emergency switch circuit 111 includes a plurality of emergency switches 1111 connected in series. The emergency switch 1111 can be a push-button switch, a toggle switch, or other switches. In this embodiment, the plurality of emergency switches 1111 are connected in series to the main control circuit 113. In some other embodiments, the series circuit of the plurality of emergency switches 1111 may not be connected to the main control circuit 113.

[0032] In some embodiments, at least two different emergency switches 111 are disposed at different positions on the apron. The emergency switches 1111 correspond to at least some of the apron parking positions 20 one by one. The emergency switches 1111 may be disposed within the area of the corresponding parking position 20, or may be disposed outside the area of the corresponding parking position 20. When an emergency occurs at any parking position 20, the emergency switch 1111 corresponding to the parking position 20 can be manually operated to disconnect the emergency switch 1111. Among them, manually operating the emergency switch 1111 may include, but is not limited to, manually pressing, rotating, or switching the emergency switch 1111. In some embodiments, the emergency switch 1111 can also be disconnected in a non-contact sensing manner. For example, within the sensing range of the emergency switch 1111, a specific gesture can be used to automatically disconnect the emergency switch 1111.

[0033] In some embodiments, multiple emergency switches 1111 are correspondingly provided for at least one parking position 20 on the apron. When an emergency occurs at the parking position 20, any one of the emergency switches 1111 corresponding to the parking position 20 can be manually operated to be disconnected.

[0034] In some embodiments, one emergency switch 1111 is correspondingly provided for multiple parking positions 20 on the apron. For example, multiple adjacent parking positions 20 can correspond to one emergency switch 1111. In this way, the purpose of reducing costs and simplifying the circuit structure is achieved. When an emergency occurs at any parking position 20 corresponding to the emergency switch 1111, the emergency switch 1111 can be manually operated to be disconnected.

[0035] In some embodiments, the switch detection circuit 1140 is respectively connected to each emergency switch 1111, and is used to detect the on / off state of each of the emergency switches 1111 and output corresponding on / off state information. Among them, the on / off state information is used to represent the on / off state of the emergency switch 1111. The multiple wireless positioning devices 112 are connected to the switch detection circuit 1140 and correspond to the emergency switches 1111 one by one. Each wireless positioning device 112 is used to receive the on / off state information of the corresponding emergency switch 1111 and send the on / off state information of the emergency switch 1111 and the switch identity identifier. The switch identity identifier is used to identify the emergency switch 1111 corresponding to the wireless positioning device 112. The switch identity identifiers of different emergency switches 1111 are different. The switch identity identifier can be obtained by the wireless positioning device 112 from the information sent by other devices, or can be determined by the wireless positioning device 112. For specific details, please refer to Figure 2 the relevant description.

[0036] In some embodiments, the main control circuit 113 is wirelessly connected to a plurality of wireless positioning devices 112 respectively, and is configured to receive the on / off status information and switch identity identifiers of each emergency switch 1111, and determine the on / off status of each emergency switch 1111 according to the on / off status information and switch identity identifiers of each emergency switch 1111. In some embodiments, the main control circuit 113 may include a wireless communication module 1131 and a main controller 1132. The wireless communication module 1131 is wirelessly connected to a plurality of wireless positioning devices 112 and is also connected to the main controller 1132. The wireless communication module 1131 receives the on / off status information and switch identity identifiers of each emergency switch 1111 sent by each wireless positioning device 112, and sends the received on / off status information and switch identity identifiers of each emergency switch 1111 to the main controller 1132. The main controller 1132 determines the on / off status of each emergency switch 1111 according to the on / off status information and switch identity identifiers of each emergency switch 1111. Since the switch identity identifiers of different emergency switches 1111 are different, the main control circuit 113 can determine the emergency switch 1111 corresponding to the switch identity identifier according to the switch identity identifier, and further, according to the on / off status information of the emergency switch 1111, can determine the on / off status of the emergency switch 1111 corresponding to the switch identity identifier.

[0037] In some embodiments, the oil pump control circuit 12 is connected to the fuel pump 13 and is configured to control the operation of the fuel pump 13. The fuel pump 13 can be used to refuel the aircraft parked at the parking bay 20. One parking bay 20 can be correspondingly provided with one or more fuel pumps 14, or multiple parking bays 20 can be correspondingly provided with one fuel pump 14. The fuel pump 14 can be arranged within the area of the corresponding parking bay 20 or outside the area of the corresponding parking bay 20, and is used to refuel the aircraft at the corresponding parking bay 20. One oil pump control circuit 13 is connected to one or more fuel pumps 14 and is configured to control the operation of the fuel pump 14. The main control circuit 113 of the apron emergency system 11 is connected to the oil pump control circuit 12. The main control circuit 113 is configured to control the oil pump control circuit 12 to stop working when it determines that any one of the emergency switches 1111 is turned off. In this way, when an emergency occurs at any parking bay 20, the fuel pump 14 can be timely controlled to stop supplying fuel to the aircraft, effectively preventing problems such as potential safety hazards caused by the operation of the fuel pump 14 during an emergency. When the main control circuit 113 determines that all the emergency switches 1111 are connected, it can control the oil pump control circuit 12 to work normally, and the fuel pump 13 can supply fuel to the aircraft normally.

[0038] In some embodiments, the main controller 1132 of the main control circuit 113 is connected to the oil pump control circuit 12. When the main controller 1132 determines that any one of the emergency switches 1111 is turned off, it controls the oil pump control circuit 12 to stop working.

[0039] In some embodiments, since the main control circuit 113 of the apron emergency system 11 can determine the on / off status of each emergency switch 1111 based on the on / off status information and switch identity identifier sent by each wireless positioning device 112, on the one hand, when one or several emergency switches 1111 are disconnected due to an emergency situation occurring at the corresponding parking position 20, if, for example, airport staff forget the emergency switches 1111 that are actually disconnected during actual operation, or the airport staff who disconnect the emergency switches 1111 do not inform other staff of the emergency switches 1111 that are actually disconnected during actual operation, resulting in other staff being unable to determine the actually disconnected emergency switches 1111, or the emergency switches 1111 are disconnected due to reasons such as misoperation, causing airport staff to be unable to determine the actually disconnected emergency switches 1111, the on / off status information and switch identity identifier of each emergency switch 1111 sent by each wireless positioning device 112 to the main control circuit 113 can quickly determine the actually disconnected emergency switches 1111. Compared with checking each emergency switch 1111 at various positions on the apron to determine the disconnected emergency switch 1111, the apron emergency system 11 of the present application does not require airport staff to check at the locations of each emergency switch 1111 on the apron, and can quickly determine the disconnected emergency switch 1111, with high efficiency, reducing the impact on apron fuel supply due to the inability to promptly determine the disconnected emergency switch 1111. Compared with the apron emergency system in the related art that does not include the wireless positioning device 112, when the apron emergency system in the related art is unable to determine the actually disconnected emergency switch, it can only check the emergency switches one by one to determine the disconnected emergency switch. However, the number of emergency switches at the airport is relatively large, possibly reaching dozens or even hundreds, such as 80. These emergency switches are set at different positions at the airport, and the workload of checking is large and time-consuming, seriously affecting the normal fuel supply on the apron. The apron emergency system 11 of the present application is provided with the wireless positioning device 112, which sends the on / off status information and switch identity identifier of each emergency switch 1111 to the main control circuit 113, enabling the main control circuit 113 to determine the on / off of each emergency switch 1111 based on the on / off status information and switch identity identifier of each emergency switch 1111, without having to check one by one at the locations of each emergency switch 1111 on the apron, greatly improving the efficiency and reducing the impact on apron fuel supply when the emergency switch 1111 is disconnected. At the same time, for some emergency circuits that have achieved emergency control through the series connection of emergency switches, connecting a wireless positioning device 112 to each series-connected emergency switch can upgrade to the apron emergency system 11 of the present application. The apron emergency system 11 of the present application has strong applicability and feasibility, and the upgrade and transformation cost is low.

[0040] In some embodiments, the main control circuit 113 is further configured to determine the apron position where the emergency switch 1111 corresponding to the switch identity identifier is located according to the corresponding relationship between the switch identity identifier of each emergency switch 1111 and the apron position where it is located. Specifically, the main control circuit 113 side may store a list of the corresponding relationships between the switch identity identifiers of each emergency switch 1111 and the apron positions where they are located. After receiving the on / off status information and the switch identity identifier of each emergency switch 1111, the main control circuit 113 determines the apron position where the emergency switch 1111 corresponding to the switch identity identifier is located by querying the list of the corresponding relationships between the switch identity identifiers of each emergency switch 1111 and the apron positions where they are located. In this way, after the main control circuit 113 determines the specific emergency switch 1111 that is turned off (for example, after determining the switch code of the specific emergency switch 1111 that is turned off), it can also determine the apron position where the emergency switch 1111 is located, avoiding the need for airport staff to manually query the apron position where the turned-off emergency switch 1111 is located, and the efficiency is higher. In some embodiments, the main controller 1132 of the main control circuit 113 determines the apron position where the emergency switch 1111 corresponding to the switch identity identifier is located according to the corresponding relationship between the switch identity identifier of each emergency switch 1111 and the apron position where it is located.

[0041] In some embodiments, the apron emergency system 100 includes a display device 115. The display device 115 is connected to the main control circuit 113 and is configured to display an apron map, and is further configured to mark each emergency switch 1111 and the on / off status of each emergency switch 1111 at the corresponding position on the apron map according to the apron position where each emergency switch 1111 is located and the on / off status of each emergency switch 1111. Among them, the on / off status of the emergency switch 1111 can be distinguished and displayed by different colors. For example, when the emergency switch 1111 is connected, the emergency switch 1111 is marked as green; when the emergency switch 1111 is turned off, the emergency switch 1111 is marked as red. In this way, the on / off status of the emergency switch 1111 can be more intuitively distinguished. In some other embodiments, the on / off status of the emergency switch 1111 can also be distinguished and displayed in other ways. For example, when the emergency switch 1111 is connected, the emergency switch 1111 is marked as a circle; when the emergency switch 1111 is turned off, the emergency switch 1111 is marked as a square. The present application does not limit the way of distinguishing and displaying. In this way, airport staff can intuitively monitor the on / off status of each emergency switch 1111 on the apron through the display device 115, which is more convenient and intuitive. And through the apron map, a relatively optimal route for quickly reaching the position where the turned-off emergency switch 1111 is located can be determined, shortening the time for dealing with the problem of the turned-off emergency switch 1111 and enabling the apron fuel supply to be restored in time. In some embodiments, the display device 115 is connected to the main controller 1132 of the main control circuit 113.

[0042] In some embodiments, the apron emergency system 100 includes an alarm system 116. The alarm system 116 is connected to the main control circuit 113 and is configured to alarm for the open / closed states of each emergency switch 1111 determined by the main control circuit 113, and alarm for the open emergency switches 1111. In this embodiment, for the open emergency switches 1111, the alarm system 116 can give an alarm prompt in the form of a prompt box, and the prompt box can include information such as the time when the emergency switch 1111 is opened and the apron location where it is located. By alarming for the open emergency switches 1111, airport staff can be timely reminded to handle the situation of the open emergency switches 1111, reducing the impact of the open emergency switches 1111 on apron fuel supply. In some other embodiments, the alarm system 116 can also alarm for the open emergency switches 1111 in other ways, such as text message alarm. In some embodiments, the alarm system 116 can also store the generated alarms and provide a query interface, enabling airport staff to query the generated alarms according to dimensions such as alarm time and alarm location.

[0043] Figure 2 Yes Figure 1 is a circuit diagram of an embodiment of the apron emergency system 11 in

[0044] See Figure 2 , the emergency switch circuit 111 includes a power supply terminal 121. In some embodiments, the power supply terminal 121 is a DC power supply, such as a battery. In some other embodiments, the power supply terminal 121 is an AC power supply, such as mains electricity. The emergency switch 1111 is serially connected between the power supply terminal 121 and the main control circuit 113. The main control circuit 113 may include a control chip. The main control circuit 113 may be arranged in a control center. In Figure 2 the illustrated embodiment, when all the emergency switches 1111 of the emergency switch circuit 111 are connected, the circuit between the power supply terminal 121 and the control circuit 12 forms a path, and the main control circuit 113 can detect a first electrical signal (such as a high level); when any one of the emergency switches 1111 of the emergency switch circuit 111 is opened, an open circuit is formed between the power supply terminal 121 and the main control circuit 113, and the main control circuit 113 can detect a second electrical signal (such as a low level). The main control circuit 113 can determine whether there is an open emergency switch 1111 in the emergency switch circuit 111 according to the detected different electrical signals. Here, the emergency switch circuit 111 is connected to the main control circuit 113 through a hardware circuit. When any one of the emergency switch circuits 111 in the emergency switch circuit 111 is opened, the main control circuit 113 can receive the corresponding electrical signal relatively quickly, and then timely control the oil pump control circuit 12 (see Figure 1)Stop working. Compared with determining whether there is an emergency switch 1111 in the emergency switch circuit 111 disconnected by the on-off status information and switch identity identifier of the emergency switch 1111 sent by the wireless positioning device 112, the information sent by the wireless positioning device 112 needs to be judged by the software of the main control circuit 113, which will have a slight delay in time, and the speed at which the main control circuit 113 controls the oil pump control circuit 12 to stop working is slightly slower.

[0045] Figure 2 In the illustrated embodiment, the main control circuit 113 is hardware-connected to the emergency switch circuit 111. According to the detected different electrical signals, it can be determined whether there is an emergency switch 1111 in the emergency switch circuit 111 disconnected, but the specific disconnected emergency switch 1111 cannot be determined. The main control circuit 113 can determine the specific disconnected emergency switch 1111 through the on-off status information and switch identity identifier of each emergency switch 1111 sent by each wireless positioning device 112. In this way, the specific disconnected emergency switch 1111 can be determined relatively quickly without having to check at the locations of each emergency switch 1111 on the apron.

[0046] See Figure 2 , the switch detection circuit 1140 includes a plurality of detection sub-circuits 114. The plurality of detection sub-circuits 114 are respectively connected between the corresponding wireless positioning device 112 and the emergency switch 1111. Each detection sub-circuit 114 is used to detect the on-off status of the corresponding connected emergency switch 1111, and according to the on-off status of the emergency switch 1111, on-off status information corresponding to the on-off status of the emergency switch 1111 can be generated and sent to the wireless positioning device 112. In some embodiments, when the detection sub-circuit 114 detects that the emergency switch 1111 is in a connected state, one of the high level or the low level can be generated as the on-off status information of the emergency switch 1111 and sent to the wireless positioning device 112; when the detection sub-circuit 114 detects that the emergency switch 1111 is in a disconnected state, the other of the high level or the low level can be generated as the on-off status information of the emergency switch 1111 and sent to the wireless positioning device 112. By each detection sub-circuit 114 detecting the on-off status of the corresponding connected emergency switch 1111 and sending the on-off status information of each emergency switch 1111 to the wireless positioning device 112, in this way, the wireless positioning device 112 does not need to detect the on-off status of the emergency switch 1111, simplifying the function and structure of the wireless positioning device 112.

[0047] In some other embodiments, the detection sub-circuit 114 can also be integrated into the wireless positioning device 112. The wireless positioning device 112 is connected to the corresponding emergency switch 1111, detects the on-off status of the emergency switch 1111, and determines the on-off status information corresponding to the on-off status of the emergency switch 1111.

[0048] Figure 2 In the illustrated embodiment, in addition to sending the on / off state information of the emergency switch 1111 to the wireless positioning device 112, the detection sub-circuit 114 also sends the switch identity identifier of the emergency switch 1111 to the wireless positioning device 112. Specifically, different switch codes can be set for different emergency switches 1111. The detection sub-circuit 114 determines the switch identity identifier of the emergency switch 1111 according to the switch code, and sends the switch identity identifier of the emergency switch 1111 to the wireless positioning device 112. In some embodiments, the switch code of the emergency switch 1111 can be used as the switch identity identifier of the emergency switch 1111. In some other embodiments, the identifier obtained according to the switch code can also be used as the switch identity identifier of the emergency switch 1111. For example, the identifier obtained by encrypting the switch codes of the emergency switches 1111 can be used as the switch identity identifier of each emergency switch 1111.

[0049] In some other embodiments, the detection sub-circuit 114 may also not send the switch identity identifier of the emergency switch 1111 to the wireless positioning device 112. In these embodiments, the switch identity identifier of the emergency switch 1111 connected to each wireless positioning device 112 is determined on the side of each wireless positioning device 112. Specifically, since the wireless positioning device 112 and the emergency switch 1111 are in one-to-one correspondence, and the wireless communication addresses are different when different wireless positioning devices 112 communicate wirelessly with the main control circuit 113, the wireless communication address of each wireless positioning device 112 can be used as the switch identity identifier of the emergency switch 1111 connected to each wireless positioning device 112. The main control circuit 113 determines the corresponding emergency switch 1111 according to the wireless communication addresses of the wireless positioning devices 112.

[0050] Figure 2In the illustrated embodiment, the detection sub - circuit 114 includes a current detection circuit 1142 and a detection controller 1141. The current detection circuit 1142 is connected in parallel with the emergency switch 1111. The detection controller 1141 includes current detection terminals C1, C2 and a control terminal M1. The current detection terminals C1, C2 are connected to the current detection circuit 1142, and the control terminal M1 is connected to the wireless positioning device 112. The detection controller 1141 is used to determine the on - off state of the emergency switch 1111 according to the electrical signals collected by the current detection terminals C1, C2, and send the on - off state information of the emergency switch 1111 to the wireless positioning device 112 through the control terminal M1 according to the on - off state of the emergency switch 1111. Specifically, when the emergency switch 1111 is connected, the current detection circuit 1142 connected in parallel with it is short - circuited, and no current flows through the current detection circuit 1142. When the emergency switch 1111 is disconnected, the current detection circuit 1142 connected in parallel with it is powered on and current flows through. The detection controller 1141 can determine whether current flows through the current detection circuit 1142 according to the electrical signals collected by the current detection terminals C1, C2, and further determine the on - off state of the emergency switch 1111. The circuit is simple.

[0051] In this embodiment, the detection controller 1141 also sends the switch identity identifier of each corresponding emergency switch 1111 to the wireless positioning device 112 through the control terminal M1.

[0052] In some embodiments, the current detection circuit 1142 includes a sampling resistor R11. The sampling resistor R11 is connected in parallel with the emergency switch 1111. The current detection terminal C1 is connected to one end of the sampling resistor R11, and the current detection terminal C2 is connected to the other end of the sampling resistor R11. The detection controller 1141 collects the voltage at one end of the sampling resistor R11 through the current detection terminal C1, and collects the voltage at the other end of the sampling resistor R11 through the current detection terminal C2. By subtracting the voltages collected by the current detection terminal C1 and the current detection terminal C2, the voltage of the sampling resistor R11 can be obtained. When the emergency switch 1111 is closed, the sampling resistor R11 is short - circuited, and no current flows through the sampling resistor R11. After subtracting the voltage collected by the current detection terminal C1 and the voltage collected by the current detection terminal C2, the result can be 0 volts, indicating that no current flows through the sampling resistor R11; conversely, when the emergency switch 1111 is disconnected, the sampling resistor R11 is powered on and current flows through the sampling resistor R11. After subtracting the voltage collected by the current detection terminal C1 and the voltage collected by the current detection terminal C2, the result can be non - zero volts, indicating that the sampling resistor R11 is powered on. Thus, the detection controller 1141 can determine whether the emergency switch 1111 is disconnected according to the collected voltage signal. By using the sampling resistor R11 to detect the on - off of the emergency switch 1111, the circuit is relatively simple.

[0053] In some embodiments, the emergency switch circuit 111 includes a current-limiting resistor R12. The current-limiting resistor R12 is serially connected between the emergency switch circuit 111 and the main control circuit 113, and is used to limit the current of the main control circuit 113, preventing the main control circuit 113 from being damaged due to excessive current.

[0054] In some embodiments, the emergency switch circuit 111 includes a pull-down resistor R13. One end of the pull-down resistor R13 is connected between the emergency switch circuit 111 and the main control circuit 113, and the other end of the pull-down resistor R13 is grounded. When any emergency switch 1111 in the emergency switch circuit 111 is turned off, the pull-down resistor R13 can pull down the port voltage of the main control circuit 113, so that the main control circuit 1132 can detect the above-mentioned second electrical signal (such as a low level) indicating that the emergency switch circuit 111 is turned off.

[0055] Figure 3 is Figure 1 The circuit diagram of another embodiment of the apron emergency system 21 in

[0056] Figure 3 The apron emergency system 21 shown and Figure 2 The apron emergency system 11 shown is basically similar. The main difference is that the emergency switch circuit 111 is connected between the power supply terminal 221 and the ground, and is not hardware-connected to the main control circuit 213. The main control circuit 213 determines whether any emergency switch 2111 in the emergency switch circuit 211 is turned off by wirelessly communicating with each wireless positioning device 212. In this way, the circuit connection can be simplified. In Figure 3 the emergency switch circuit 111 may include a current-limiting resistor R23, and the current-limiting resistor R23 is serially connected with each emergency switch 1111. The current-limiting resistor R23 can limit the current of the emergency switch circuit 111, preventing the emergency switch circuit 111 from being damaged due to excessive current.

[0057] Figure 4 is Figure 1 The circuit diagram of another embodiment of the apron emergency system 31 in

[0058] Figure 4 The apron emergency system 31 shown and Figure 2The apron emergency system 11 shown is basically similar. The main difference is that the apron emergency system 31 includes an alarm circuit 317. The detection controller 3141 includes an alarm control terminal Ctl. The alarm circuit 317 is connected to the alarm control terminal Ctl. When the detection controller 3141 detects that the corresponding emergency switch 3111 is disconnected, it controls the alarm circuit 317 to give an alarm through the alarm control terminal Ctl. Among them, the alarm circuit 317 can give a sound alarm or a light alarm. In this way, for example, when airport staff arrive at the area where the disconnected emergency switch 3111 is located, they can quickly determine the position of the disconnected emergency switch 3111 according to the alarm sound and the light for alarm emitted by the alarm circuit 317.

[0059] Figure 4 In the shown embodiment, the alarm circuit 317 includes an alarm 3172. The alarm control terminal Ctl is connected to the alarm 3172. The alarm 3172 can include at least one of a sound alarm (such as a buzzer) and a light alarm (such as a light-emitting diode). When the detection controller 3141 detects that the corresponding emergency switch 3111 is disconnected, it controls the alarm 3172 to give an alarm through the alarm control terminal Ctl. The detection controller 3141 can flexibly control the alarm of the alarm 3172. For example, if the alarm 3172 is a sound alarm, during the noisy daytime, the detection controller 3141 can control the alarm 3172 to give an alarm with a louder decibel, which can make it easier for the staff to locate; during the quiet night, the detection controller 3141 can control the alarm 3172 to give an alarm with a smaller decibel to avoid generating excessive noise. Another example is that if the alarm 3172 is a light alarm, during the daytime, the detection controller 3141 can control the light alarm to generate a brighter light for alarm, which is convenient for the staff to locate more easily; but at night, the detection controller 3141 can control the light generated by the light alarm for alarm. In this way, energy can be saved.

[0060] In some embodiments, the alarm circuit 317 includes a drive circuit 3171. The drive circuit 3171 is connected between the alarm control terminal Ctl of the detection controller 3141 and the alarm 3172. The detection controller 3141 controls the drive circuit 3171 to drive the alarm 3172. The detection controller 3141 can control the alarm 3172 by controlling the on / off of the drive circuit 3171. The drive circuit 3171 can include switches such as transistors and thyristors. When the detection controller 3141 controls these switches to be disconnected, the alarm 3172 is powered off and stops alarming; on the contrary, the alarm 3172 is powered on and gives an alarm. The detection controller 3141 can precisely control the power on and off of the alarm 3172 by controlling the drive circuit 3171. At the same time, the detection controller 3141 can drive a high-power alarm 3172 by controlling the drive circuit 3171.

[0061] In some embodiments, the alarm 3172 includes a sound alarm. The alarm circuit 212 includes a sound sensing circuit 3173. The sound sensing circuit 3173 is connected to the detection controller 3141 and is used to sense the ambient sound and output a decibel electrical signal representing the magnitude of the ambient sound. The detection controller 3141 is connected to the sound alarm and controls the loudness of the alarm sound of the sound alarm according to the decibel electrical signal. In some embodiments, if the detection controller 3141 determines that the ambient sound is relatively large according to the decibel electrical signal, it controls the sound alarm to give an alarm with a relatively loud alarm sound, so that airport staff can more easily hear the alarm sound. In some embodiments, if the detection controller 3141 determines that the ambient sound is relatively small according to the decibel electrical signal, it controls the sound alarm to give an alarm with a relatively small alarm sound, so as to avoid generating excessive noise while enabling airport staff to hear the alarm sound. In some embodiments, the sound sensing circuit 3173 and the sound alarm can be arranged adjacent to each other. In this way, the ambient sound sensed by the sound sensing circuit 3173 is the sound of the environment where the sound alarm is located. After the detection controller 3141 controls the sound alarm to give an alarm, it can stop collecting or ignore the decibel electrical signal output by the sound sensing circuit 3173. In this way, it is avoided that after the sound sensing circuit 3173 senses the alarm sound of the sound alarm and outputs a corresponding decibel electrical signal, the detection controller 3141 makes an incorrect control of the sound alarm.

[0062] In some embodiments, the alarm 3172 includes a light alarm. The alarm circuit 212 includes a photosensitive circuit 3174. The photosensitive circuit 3174 is connected to the detection controller 3141 and is used to sense light and output a light intensity electrical signal representing the light intensity. The detection controller 3141 is connected to the light alarm and controls the intensity of the light generated by the light alarm according to the light intensity electrical signal. In some embodiments, if the detection controller 3141 determines that the ambient light intensity is relatively large according to the light intensity electrical signal, it controls the light alarm to emit a relatively strong light for alarm, so that airport staff can more easily identify it. In some embodiments, if the detection controller 3141 determines that the ambient light intensity is relatively small according to the light intensity electrical signal, it controls the light alarm to emit a relatively weak light for alarm to save energy. After the detection controller 3141 controls the light alarm to give an alarm, it can stop collecting or ignore the light intensity electrical signal output by the photosensitive circuit 3174. In this way, it is avoided that after the photosensitive circuit 3174 senses the light for alarm emitted by the light alarm and outputs a corresponding light intensity electrical signal, the detection controller 3141 makes an incorrect control of the light alarm.

[0063] Figure 5 is Figure 1 a circuit diagram of another embodiment of the apron emergency system 41 in

[0064] Figure 5The apron emergency system 41 shown and Figure 2 the apron emergency system 11 shown are basically similar. The main difference is that the apron emergency system 41 includes an alarm circuit 417. The alarm circuit 417 includes an alarm 4170. The alarm 4170 of at least one alarm circuit 417 is connected in parallel with its corresponding emergency switch 1111. When the emergency switch 1111 is closed, the emergency switch 1111 short - circuits the alarm 4170 of the corresponding alarm circuit 417, and the alarm 4170 of the alarm circuit 417 does not give an alarm; when the emergency switch 1111 is opened, the alarm 4170 of the corresponding alarm circuit 417 is powered on and gives an alarm.

[0065] In some embodiments, the alarm 4170 includes a sound alarm 4171. The sound alarm 4171 is connected in parallel with the emergency switch 1111. When the emergency switch 1111 is connected, the sound alarm 4171 is short - circuited by the emergency switch 1111, the sound alarm 4171 is powered off and stops giving an alarm sound; when the emergency switch 1111 is opened, the sound alarm 4171 is powered on and gives an alarm sound.

[0066] In some embodiments, the sound alarm 4171 includes a buzzer. The buzzer is a circuit component that is relatively easy to obtain, and the feasibility of the emergency circuit 11 is stronger.

[0067] In some embodiments, the alarm circuit 417 includes a first current - limiting resistor R41. The first current - limiting resistor R41 is connected in series with the sound alarm 4171. The series circuit composed of the sound alarm 4171 and the first current - limiting resistor R41 is connected in parallel with the emergency switch 1111. The first current - limiting resistor R41 can be used to limit the current of the sound alarm 4171, preventing the sound alarm 4171 from being burned out due to excessive current when it is powered on.

[0068] In some embodiments, the alarm 4170 includes a light alarm 4172. The light alarm 4172 is connected in parallel with the emergency switch 1111. When the emergency switch 1111 is connected, the light alarm 4172 is short - circuited by the emergency switch 1111, the light alarm 4172 is powered off and stops emitting light; when the emergency switch 1111 is opened, the light alarm 4172 is powered on and emits light.

[0069] In some embodiments, the light alarm 4172 includes a light - emitting diode. The light - emitting diode is a circuit component that is relatively easy to obtain, and the feasibility of the emergency circuit 11 is stronger.

[0070] In some embodiments, the alarm circuit 417 includes a second current-limiting resistor R42, and the second current-limiting resistor R42 is connected in series with the optical alarm 4172. The series circuit composed of the optical alarm 4172 and the second current-limiting resistor R42 is connected in parallel with the emergency switch 1111. The second current-limiting resistor R42 can be used to limit the current of the optical alarm 4172, preventing the optical alarm 4172 from being burned out due to excessive current when powered on.

[0071] In some embodiments, the emergency switch 1111 can be connected in parallel with the sound alarm 4171 and the optical alarm 4172 at the same time, so that the alarm effect is better. In some embodiments, the emergency switch 1111 can be connected in parallel with one of the sound alarm 4171 and the optical alarm 4172, so as to simplify the circuit structure and save the circuit cost. In some embodiments, the sound alarm 4171 and the optical alarm 4172 can be connected to the same current-limiting resistor. Specifically, after the sound alarm 4171 and the optical alarm 4172 are connected in parallel, they are connected to one end of the emergency switch 1111 through the current-limiting resistor. The current-limiting resistor simultaneously provides current-limiting protection for the sound alarm 4171 and the optical alarm 4172.

[0072] Figure 6 It is a flowchart of the apron emergency method provided by an embodiment of the present application. Figure 6 The shown apron emergency method can be applied to the apron emergency systems 11, 21, 31, 41. Here, it is described by taking the application to the apron emergency system 11 as an example. The apron emergency method includes step S61 and step S63.

[0073] Step S61, detecting the on-off state of each emergency switch 1111 through the switch detection circuit 1140 and outputting the corresponding on-off state information.

[0074] Step S62, receiving the on-off state information of the emergency switch 1111 through the wireless positioning device 112 and sending the on-off state information of the emergency switch 1111 and the switch identity identifier.

[0075] Step S63, receiving the on-off state information of each emergency switch 1111 and the switch identity identifier through the main control circuit 113, and determining the on-off state of each emergency switch 1111 according to the on-off state information and the switch identity identifier of each emergency switch 1111.

[0076] In some embodiments, after determining the on-off state of each emergency switch 1111, the apron emergency method includes: determining the apron position where the emergency switch 1111 identified by the switch identity identifier is located through the main control circuit 113 according to the correspondence between the switch identity identifier of each emergency switch 1111 and the apron position where it is located.

[0077] In some embodiments, after determining the apron position of the emergency switch identified by the switch identity identifier, the apron emergency method includes: displaying an apron map through a display device 115, and marking each emergency switch 1111 and the on / off state of each emergency switch 1111 at the corresponding position on the apron map according to the apron position of each emergency switch 1111 and the on / off state of each emergency switch 1111.

[0078] In some embodiments, after determining the on / off state of each emergency switch 111, the apron emergency method includes: alarming, through an alarm system 116, the disconnected emergency switch 1111.

[0079] For the relevant description of the apron emergency method, reference may specifically be made to the relevant description of the apron emergency systems 11, 21, 31, 41, which will not be elaborated here.

[0080] In this application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0081] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0082] It should be noted that when an element is referred to as being "fixed to", "disposed on", "secured to" or "mounted on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0083] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0084] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of protection of the present application.

Claims

1. An apron emergency system, the apron emergency system includes an emergency switch circuit, the emergency switch circuit includes a plurality of serially connected emergency switches, and the emergency switches correspond to the apron parking positions, characterized in that, The apron emergency system includes: A switch detection circuit, which is respectively connected to each of the emergency switches, and is used to detect the on / off state of each of the emergency switches and output corresponding on / off state information; A plurality of wireless positioning devices, which are connected to the switch detection circuit and correspond to the emergency switches one by one. Each of the wireless positioning devices is used to receive the on / off state information of the corresponding emergency switch and send the on / off state information and switch identity identifier of the emergency switch; and A main control circuit, which is wirelessly connected to the plurality of wireless positioning devices respectively, and is used to receive the on / off state information and switch identity identifier of each of the emergency switches, and determine the on / off state of each of the emergency switches according to the on / off state information and switch identity identifier of each of the emergency switches; The switch detection circuit includes a plurality of detection sub-circuits. The plurality of detection sub-circuits are respectively connected between the corresponding wireless positioning devices and the emergency switches. Each of the detection sub-circuits is used to detect the on / off state of the corresponding emergency switch and send the on / off state information of the emergency switch to the wireless positioning device according to the on / off state of the emergency switch; The detection sub-circuit includes a current detection circuit and a detection controller. The current detection circuit is connected in parallel with the emergency switch. The detection controller includes a current detection end and a control end. The current detection end is connected to the current detection circuit, and the control end is connected to the wireless positioning device. The detection controller is used to determine the on / off state of the emergency switch according to the electrical signal collected by the current detection end and send the on / off state information of the emergency switch to the wireless positioning device through the control end.

2. The apron emergency system according to claim 1, wherein The switch codes of different emergency switches are different. The detection sub-circuit is used to determine the switch identity identifier of the emergency switch according to the switch code of the corresponding emergency switch and send the switch identity identifier of the emergency switch to the wireless positioning device.

3. The apron emergency system according to claim 1, wherein, At least two different emergency switches are arranged at different positions on the apron. The main control circuit is also used to determine the apron position where the emergency switch corresponding to the switch identity identifier is located according to the corresponding relationship between the switch identity identifier of each emergency switch and the apron position where it is located.

4. The apron emergency system according to claim 3, wherein, The apron emergency system includes a display device. The display device is connected to the main control circuit and is used to display an apron map, and is used to mark each of the emergency switches and the on / off state of each of the emergency switches at the corresponding positions on the apron map according to the apron position where each of the emergency switches is located and the on / off state of each of the emergency switches.

5. The apron emergency system according to claim 3, characterized in that, The apron emergency system includes an alarm system. The alarm system is connected to the main control circuit and is used to alarm for the disconnected emergency switches according to the on / off state of each of the emergency switches determined by the main control circuit.

6. An apron fuel supply system for controlling a fuel pump to supply fuel to an aircraft, characterized in that, The apron fuel supply system includes: The apron emergency system according to any one of claims 1 to 5; The oil pump control circuit, connected to the fuel pump, is used to control the operation of the fuel pump. The main control circuit of the apron emergency system is connected to the oil pump control circuit. The main control circuit is used to control the oil pump control circuit to stop working when it is determined that any one of the emergency switches is turned off.

7. An apron emergency method, characterized in that, Applied to the apron emergency system as claimed in claim 1, the apron emergency method includes: Detecting the on / off states of the emergency switches through the switch detection circuit and outputting corresponding on / off state information; Receiving the on / off state information of the corresponding emergency switch through each of the wireless positioning devices and sending the on / off state information of the emergency switch and the switch identity identifier; Receiving the on / off state information of the emergency switches and the switch identity identifiers through the main control circuit, and determining the on / off states of the emergency switches according to the on / off state information and the switch identity identifiers of the emergency switches.

8. The apron emergency method according to claim 7, wherein The apron emergency system includes a plurality of detection sub-circuits, and the plurality of detection sub-circuits are respectively connected between the corresponding wireless positioning devices and the emergency switches; The apron emergency method includes: Detecting the on / off state of the corresponding emergency switch through the detection sub-circuit and sending the on / off state information of the emergency switch to the wireless positioning device according to the on / off state of the emergency switch.

9. The apron emergency method according to claim 8, wherein, At least two different emergency switches are arranged at different positions on the apron; After determining the on / off states of the emergency switches, the apron emergency method includes: Determining the apron position where the emergency switch corresponding to the switch identity identifier is located through the main control circuit according to the corresponding relationship between the switch identity identifier of each emergency switch and the apron position where it is located.

10. The apron emergency method according to claim 9, wherein, The apron emergency system includes a display device, and the display device is connected to the main control circuit; After determining the apron position where the emergency switch corresponding to the switch identity identifier is located, the apron emergency method includes: Displaying an apron map through the display device, and marking each emergency switch and the on / off state of each emergency switch at the corresponding position on the apron map according to the apron position where each emergency switch is located and the on / off state of each emergency switch.

11. The apron emergency method according to claim 10, wherein The apron emergency system includes an alarm system, and the alarm system is connected to the main control circuit; After determining the on / off states of the emergency switches, the apron emergency method includes: Issuing an alarm for the turned-off emergency switch through the alarm system.

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