Shore power cable drum control method, system and electronic equipment

Abstract

The embodiments of the present application provide a shore power cable reel control method, system and electronic device, which can realize timely and accurate control of the reeling and releasing. The method includes: using a water level monitor to monitor the water level of the pontoon connected to the cable reel in real time to obtain real-time water level information; using a tension sensor to monitor the tension on the cable released by the cable reel in real time to obtain real-time force information; and controlling the reeling and releasing of the cable according to the real-time water level information and the real-time force information. The system includes a water level information acquisition module, a force information acquisition module and a reeling and releasing control module. The electronic device includes a memory, a processor and a computer program stored in the memory and executable on the processor, and the shore power cable reel control method is implemented when the processor executes the program.

Description

Technical Field

[0001] One or more embodiments of the present application relate to the field of power automation control technology, and in particular, to a shore power cable drum control method, system and electronic equipment. Background Art

[0002] In recent years, with the sustained and rapid development of the national economy, the pace of port construction has been accelerating. As a technology that can effectively reduce port pollutant emissions, the use of shore power by ships has received more and more attention. In order to transmit electricity to the ship, the cable is connected across the river to the power box on the pontoon, and the power supply needs to be transmitted through a cable reel. The length of the cable released by the cable reel needs to be adjusted according to the position of the pontoon on the water surface. The existing technology mostly adopts manual monitoring and adjustment, or simple regulation according to the water level depth of the pontoon. Such methods cannot timely and effectively control the retraction and release of the cable, which often causes the cable to be in a tight state, which will greatly affect the service life of the cable and may pose a safety hazard. Summary of the invention

[0003] In view of this, an object of one or more embodiments of the present application is to provide a shore power cable reel control method, system and electronic equipment, which can timely and accurately control the retraction and release of the cable reel, extend the service life, and ensure the safety of electricity use.

[0004] Based on the above objectives, in a first aspect, one or more embodiments of the present application provide a shore power cable drum control method, comprising:

[0005] Monitor the water level of the pontoon connected to the cable drum in real time to obtain real-time water level information;

[0006] Real-time monitoring of the tension exerted on the cable released by the cable reel to obtain real-time force information;

[0007] The cable drum is controlled to retract and release the cable according to the real-time water level information and the real-time force information.

[0008] Optionally, controlling the cable reel to retract and release the cable according to the real-time water level information and the real-time force information includes:

[0009] According to the real-time water level information and the real-time force information, a programmable logic controller is used to generate a retraction and extension control signal, and the retraction and extension of the cable reel is controlled according to the retraction and extension control signal.

[0010] Optionally, generating a retraction and extension control signal by using a programmable logic controller according to the real-time water level information and the real-time force information includes:

[0011] The retraction and extension control signal:

[0012]

[0013] Wherein, C(s) represents the retraction and extension control signal, G d (s) represents the real-time water level information corresponding to the water level monitor, L(s) represents the real-time force information corresponding to the tension sensor, R(s) is the preset initial position signal, G p (s) represents the logic control signal corresponding to the programmable logic controller, G b (s) represents the corresponding frequency conversion control signal of the variable frequency motor, and D(s) represents the disturbance signal.

[0014] Optionally, the method further includes:

[0015] Monitoring and counting the number of turns of the cable on the cable drum, and calculating and determining the actual length information of the released cable;

[0016] When the retractable and retractable control signal is generated by using a programmable logic controller, the actual length information is also used as an input of the programmable logic controller to perform feedback adjustment on the retractable and retractable control signal.

[0017] Optionally, the using the actual length information as the input of the programmable logic controller to perform feedback adjustment on the retraction and extension control signal includes:

[0018] The retraction and extension control signal:

[0019]

[0020] Wherein, C(s) represents the retraction and extension control signal, G d (s) represents the real-time water level information corresponding to the water level monitor, L(s) represents the real-time force information corresponding to the tension sensor, R(s) is the preset initial position signal, G p (s) represents the logic control signal corresponding to the programmable logic controller, G b (s) represents the frequency conversion control signal corresponding to the variable frequency motor, S(s) represents the actual length information, and D(s) represents the disturbance signal.

[0021] Optionally, controlling the cable reel to retract and release the cable according to the real-time water level information and the real-time force information includes:

[0022] Comparing the preset tension threshold to which the cable released by the cable reel is subjected according to the real-time force information;

[0023] In response to the tension applied to the cable released by the cable reel being greater than or equal to the preset tension threshold, the cable reel is controlled to release the cable.

[0024] Optionally, controlling the cable reel to retract and release the cable according to the real-time water level information and the real-time force information includes:

[0025] The length of the cable required to connect the pontoon is estimated according to the real-time water level information combined with the slope environment information corresponding to the cable drum, and the estimated length information is determined;

[0026] Calculate the difference ratio based on the actual length information and the estimated length information:

[0027]

[0028] Wherein, ρ represents the difference ratio, S ′ (s) represents the estimated length information;

[0029] In response to the difference ratio being less than a preset difference ratio and the tension exerted on the cable being less than a tension safety threshold, it is determined that the cable released by the cable reel is in a safe state, and the cable reel is controlled to remain stable.

[0030] Optionally, the method further includes:

[0031] comparing the number of turns of the cable with a minimum safe number of turns;

[0032] In response to the number of cable turns being less than or equal to the minimum safe number of turns, a safety warning notification is issued.

[0033] Based on the same purpose as above, in a second aspect, one or more embodiments of the present application provide a shore power cable reel control system, including:

[0034] The water level information acquisition module is configured to use a water level monitor to monitor the water level of the pontoon connected to the cable drum in real time to acquire real-time water level information;

[0035] a force information acquisition module configured to monitor the tension exerted on the cable released by the cable reel in real time using a tension sensor to acquire real-time force information; and

[0036] A wire retracting and releasing control module is configured to control the wire retracting and releasing of the cable drum according to the real-time water level information and the real-time force information;

[0037] The shore power cable drum control system is used to execute the shore power cable drum control method as described in the first aspect.

[0038] Based on the same purpose as above, in a third aspect, one or more embodiments of the present application provide a shore power cable reel control electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the shore power cable reel control method as described in the first aspect is implemented.

[0039] It can be seen from the above that a shore power cable reel control method, system and electronic device provided by one or more embodiments of the present application have the following beneficial technical effects:

[0040] (1) Comprehensively considering the influence of the real-time water level information and the real-time force information on the required cable length, a feedback control mechanism is adopted to control the cable drum to retract and release the cable according to the real-time water level information and the real-time force information. In this way, while meeting the cable length requirements between the pontoon and the cable drum, it ensures that the tension on the cable released by the cable drum is always within a safe range, avoiding the occurrence of cable tension, thereby extending the service life of the cable and ensuring electricity safety.

[0041] (2) Using a programmable logic controller to generate a retractable control signal, the retractable control signal C(s) is simultaneously affected by the real-time water level information G d (s), the real-time force information L(s), this method can be based on the real-time water level information G d (s) and the real-time force information L(s) are used to precisely regulate the retraction and extension control signal C(s), thereby realizing real-time and precise retraction and extension control of the drum cable, ensuring that the length of the released cable is always within an appropriate range, and also ensuring that the cable force is maintained within a safe range, thereby extending the service life and ensuring the safety of electricity use.

[0042] (3) Using a programmable logic controller to generate a retractable control signal, the retractable control signal C(s) is simultaneously affected by the real-time water level information G d (s), the real-time force information L(s) and the actual length information S(s), such a method can be based on the real-time water level information G d (s), the real-time force information L(s) and the actual length information S(s) are used to accurately regulate the retraction and extension control signal C(s), thereby realizing real-time and accurate retraction and extension control of the drum cable, further ensuring that the length of the released cable is always within an appropriate range, and ensuring that the cable force is maintained within a safe range, thereby extending the service life and ensuring the safety of electricity use.

[0043] (4) The real-time force information is monitored in real time, and the preset tension threshold value which is less than the safety tension value is used as the threshold for corresponding cable retraction and release control, so as to form an emergency protection mechanism, which can ensure that the tension received by the cable will never exceed the safety tension value, and ensure that the cable force is kept within a safe range. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate one or more embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only one or more embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0045] Figure 1 A schematic diagram of a shore power cable drum control method provided by one or more embodiments of the present application;

[0046] Figure 2 A signal flow diagram of generating retraction and extension control information by using the programmable logic controller in a shore power cable reel control method provided by one or more embodiments of the present application;

[0047] Figure 3 Another signal flow diagram for generating retraction and extension control information by using the programmable logic controller in a shore power cable reel control method provided by one or more embodiments of the present application;

[0048] Figure 4 A schematic diagram of a method for controlling the cable reel to reel in and out according to the real-time water level information and the real-time force information in a shore power cable reel control method provided by one or more embodiments of the present application;

[0049] Figure 5 A schematic diagram of the structure of a shore power cable reel control system provided by one or more embodiments of the present application;

[0050] Figure 6 A schematic diagram of the structure of a shore power cable reel control electronic device provided in one or more embodiments of the present application. DETAILED DESCRIPTION

[0051] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0052] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of the present application should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in one or more embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0053] The length of the cable released by the cable reel needs to be adjusted according to the position of the pontoon on the water surface. The existing technology mostly adopts manual monitoring and adjustment, or simple regulation according to the water level depth of the pontoon. Such methods cannot provide timely and effective control over the cable retraction and release. Changes in the water level depth of the pontoon will affect the distance between the pontoon and the cable reel on shore, and the required cable length between the two will also change accordingly. However, it is impossible to accurately grasp the change in the distance between the pontoon and the cable reel based solely on the change in the water level depth, nor is it possible to accurately determine the required cable length. Therefore, in actual situations, the cable is often tight, which will affect the service life of the cable.

[0054] In response to the above problems, the purpose of this application is to propose a cable reel retraction and release control solution, while monitoring the water level of the pontoon and the stress condition of the cable, controlling the retraction and release of the cable according to the real-time water level information, and making feedback adjustments according to the real-time stress condition to ensure that the tension on the cable released by the cable reel is always within a safe range, avoiding the situation where the cable is tight, and ensuring the service life of the cable and the safety of electricity use.

[0055] The technical solution of the present application is described below in conjunction with specific embodiments.

[0056] In one aspect, an embodiment of the present application provides a shore power cable reel control method.

[0057] like Figure 1 As shown, one or more optional embodiments of the present application provide a shore power cable drum control method, comprising:

[0058] S1: The water level of the pontoon connected to the cable drum is monitored in real time to obtain real-time water level information.

[0059] The length of the cable connected between the cable drum and the pontoon will change with the depth of the water level that the pontoon is in. A water level monitor can be used to monitor the depth of the water level of the pontoon in real time to obtain real-time water level information.

[0060] S2: Real-time monitoring of the tension exerted on the cable released from the cable reel to obtain real-time force information.

[0061] The tension on the cable is one of the main factors affecting its service life. A tension sensor can be provided to monitor the tension on the cable released by the cable reel in real time.

[0062] S3: Controlling the cable reel to retract and release the cable according to the real-time water level information and the real-time force information.

[0063] When controlling the cable drum to retract and release, it is necessary to comprehensively consider the impact of the real-time water level information and the real-time force information on the required cable length. Among them, active retraction and release control is performed considering the real-time water level information. When the water level rises, the relative distance between the pontoon and the cable drum tends to decrease, and the cable drum is controlled to reel in. When the water level drops, the cable drum is controlled to release. Passive control is performed based on the real-time force information. When the force increases, the cable tends to be tightened, and the cable drum is controlled to release to reduce the force, so that the cable force is kept within a safe range.

[0064] In some optional embodiments, taking into account the impact of the real-time water level information and the real-time force information on the required cable length, a feedback control mechanism can be adopted. According to the real-time water level information and the real-time force information, a PCL (Programmable Logic Controller) is used to generate a retraction and release control signal, and the cable reel is retracted and released according to the retraction and release control signal.

[0065] The shore power cable reel control method comprehensively considers the influence of the real-time water level information and the real-time force information on the required cable length, and adopts a feedback control mechanism to control the cable reel to reel in and out according to the real-time water level information and the real-time force information. This method can meet the cable length requirements between the pontoon and the cable reel while ensuring that the tension on the cable released by the cable reel is always within a safe range, avoiding the occurrence of cable tension, thereby extending the service life of the cable and ensuring electricity safety.

[0066] like Figure 2 As shown, in a shore power cable drum control method provided in one or more optional embodiments of the present application, the programmable logic controller is used to generate a retraction and extension control signal according to the real-time water level information and the real-time force information, including:

[0067] The retraction and extension control signal:

[0068]

[0069] Wherein, C(s) represents the retraction and extension control signal, G d (s) represents the real-time water level information corresponding to the water level monitor, L(s) represents the real-time force information corresponding to the tension sensor, R(s) is the preset initial position signal, G p (s) represents the logic control signal corresponding to the programmable logic controller, G b (s) represents the corresponding frequency conversion control signal of the variable frequency motor, and D(s) represents the disturbance signal.

[0070] like Figure 2 The figure shows a signal flow chart of the shore power cable drum control method using the programmable logic controller to generate the retractable and retractable control information. The preset initial position signal R(s) is used as the input of the programmable logic controller PLC, and the signal generated by the programmable logic controller is input into the variable frequency motor, and then the variable frequency motor generates the retractable and retractable control information C(s). The input signal of the programmable logic controller also includes the real-time water level information G d (s), the real-time water level information G d (s) uses a negative feedback control mechanism input. When other information remains unchanged, the real-time water level information G d (s) increases, the retractable control information number C(s) value decreases, and the cable reel is controlled to retract accordingly; the real-time water level information G d (s) decreases, the retractable control information number C(s) value increases, and the cable reel is controlled to release the cable accordingly. For the variable frequency motor, its input signal preferably includes the real-time force information L(s), and the real-time force information L(s) plays a positive feedback role. When other information remains unchanged, the value of the real-time force information L(s) increases, and the value of the retractable control information number C(s) also increases. When the value of the real-time force information L(s) decreases, the value of the retractable control information number C(s) also decreases.

[0071] The shore power cable drum control method uses a programmable logic controller to generate a retractable control signal, and the retractable control signal C(s) is simultaneously affected by the real-time water level information G d (s), the real-time force information L(s), this method can be based on the real-time water level information G d(s) and the real-time force information L(s) are used to precisely regulate the retraction and extension control signal C(s), thereby realizing real-time and precise retraction and extension control of the drum cable, ensuring that the length of the released cable is always within an appropriate range, and also ensuring that the cable force is maintained within a safe range, thereby extending the service life and ensuring the safety of electricity use.

[0072] One or more optional embodiments of the present application provide a shore power cable drum control method, further comprising:

[0073] The number of turns of the cable on the cable drum is monitored and counted, and the actual length information of the released cable is calculated and determined. In some optional embodiments, an encoder may be provided to realize the detection and statistics of the number of turns of the cable.

[0074] When the retractable and retractable control signal is generated by using a programmable logic controller, the actual length information is also used as an input of the programmable logic controller to perform feedback adjustment on the retractable and retractable control signal.

[0075] like Figure 3 As shown, in a shore power cable reel control method provided in one or more optional embodiments of the present application, the actual length information is used as the input of the programmable logic controller to feedback-adjust the retraction and extension control signal, including:

[0076] The retraction and extension control signal:

[0077]

[0078] Wherein, C(s) represents the retraction and extension control signal, G d (s) represents the real-time water level information corresponding to the water level monitor, L(s) represents the real-time force information corresponding to the tension sensor, R(s) is the preset initial position signal, G p (s) represents the logic control signal corresponding to the programmable logic controller, G b (s) represents the frequency conversion control signal corresponding to the variable frequency motor, S(s) represents the actual length information, and D(s) represents the disturbance signal.

[0079] like Figure 3As shown in FIG. 1 , another signal flow diagram of the shore power cable drum control method using the programmable logic controller to generate the retracting and releasing control information. For the shore power cable drum, when controlling the cable reel to retract and release the cable, the length of the released cable has a stable trend, that is, when other information remains unchanged, the length of the cable released by the cable drum should also remain unchanged. When the actual length of the released cable calculated by the encoder increases, it is necessary to control the retraction of the cable. When the actual length of the released cable decreases, it is necessary to control the release of the cable. Therefore, in some optional embodiments, in addition to the real-time water level information G d (s), the actual length information S(s) calculated and determined by the encoder is also set as an input signal of the programmable logic controller.

[0080] The shore power cable drum control method uses a programmable logic controller to generate a retractable control signal, and the retractable control signal C(s) is simultaneously affected by the real-time water level information G d (s), the real-time force information L(s) and the actual length information S(s), such a method can be based on the real-time water level information G d (s), the real-time force information L(s) and the actual length information S(s) are used to accurately regulate the retraction and extension control signal C(s), thereby realizing real-time and accurate retraction and extension control of the drum cable, further ensuring that the length of the released cable is always within an appropriate range, and ensuring that the cable force is maintained within a safe range, thereby extending the service life and ensuring the safety of electricity use.

[0081] In a shore power cable drum control method provided in one or more optional embodiments of the present application, the cable drum is controlled to be retracted and released according to the real-time water level information and the real-time force information, including:

[0082] Comparing the preset tension threshold to which the cable released by the cable reel is subjected according to the real-time force information;

[0083] In response to the tension applied to the cable released by the cable reel being greater than or equal to the preset tension threshold, the cable reel is controlled to release the cable.

[0084] The preset tension threshold is set to be less than the safe tension value of the cable. When the tension received by the cable exceeds the safe tension value, the cable may be deformed and its service life may be greatly affected.

[0085] The shore power cable drum control method adopts such a method to monitor the real-time force information in real time and uses the preset tension threshold value which is less than the safety tension value as the threshold to perform corresponding line reeling and releasing control, thereby forming an emergency protection mechanism, which can ensure that the tension received by the cable will never exceed the safety tension value, and ensure that the cable force remains in a safe range.

[0086] In actual applications, there may be some scenarios where the distance between the pontoon and the shore power cable is relatively stable, and the required cable length between the two will basically not change. In this case, it can be considered that the released cable is in a safe state.

[0087] like Figure 4 As shown, in a shore power cable drum control method provided in one or more optional embodiments of the present application, the cable drum is controlled to be retracted and released according to the real-time water level information and the real-time force information, including:

[0088] S401: estimating the cable length required to connect the pontoon according to the real-time water level information combined with the slope environment information corresponding to the cable drum, and determining the estimated length information;

[0089] S402: Calculate the difference ratio according to the actual length information and the estimated length information:

[0090]

[0091] Wherein, ρ represents the difference ratio, S ′ (s) represents the estimated length information, and the difference ratio ρ is generally set to be less than 5%, for example, can be set to 3%.

[0092] S403: In response to the difference ratio being less than a preset difference ratio and the tension exerted on the cable being less than a tension safety threshold, it is determined that the cable released by the cable reel is in a safe state, and the cable reel is controlled to remain stable.

[0093] One or more optional embodiments of the present application provide a shore power cable drum control method, further comprising comparing the number of cable turns with a minimum safe number of turns;

[0094] In response to the number of cable turns being less than or equal to the minimum safe number of turns, a safety warning notification is issued.

[0095] It should be noted that the method of the embodiment of the present disclosure can be performed by a single device, such as a computer or a server. The method of the present embodiment can also be applied in a distributed scenario and completed by multiple devices cooperating with each other. In the case of such a distributed scenario, one of the multiple devices can only perform one or more steps in the method of the embodiment of the present disclosure, and the multiple devices will interact with each other to complete the described method.

[0096] It should be noted that the above describes some embodiments of the present disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0097] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments and methods, the present disclosure also provides a shore power cable reel control system.

[0098] refer to Figure 5 , the shore power cable drum control system comprises:

[0099] The water level information acquisition module 501 is configured to use a water level monitor to monitor the water level of the pontoon connected to the cable drum in real time to acquire real-time water level information;

[0100] The force information acquisition module 502 is configured to use a tension sensor to monitor the tension exerted on the cable released by the cable reel in real time to acquire real-time force information; and

[0101] A wire retracting and releasing control module 503 is configured to control the wire retracting and releasing of the cable drum according to the real-time water level information and the real-time force information;

[0102] The shore power cable drum control system is used in the corresponding shore power cable drum control method in any of the aforementioned embodiments.

[0103] For the convenience of description, the above device is described by dividing it into various modules according to its functions. Of course, when implementing the present disclosure, the functions of each module can be implemented in the same or multiple software and / or hardware.

[0104] The device of the above embodiment is used to implement the corresponding shore power cable drum control method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0105] Based on the same inventive concept, corresponding to any of the above-mentioned embodiments and methods, the present disclosure also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the shore power cable reel control method described in any of the above embodiments is implemented.

[0106] Figure 6 A more specific schematic diagram of the hardware structure of an electronic device provided in this embodiment is shown, and the device may include: a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040, and a bus 1050. The processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040 are connected to each other through the bus 1050 in the device.

[0107] The processor 1010 can be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of this specification.

[0108] The memory 1020 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory), static storage device, dynamic storage device, etc. The memory 1020 may store an operating system and other application programs. When the technical solutions provided in the embodiments of this specification are implemented by software or firmware, the relevant program codes are stored in the memory 1020 and are called and executed by the processor 1010.

[0109] The input / output interface 1030 is used to connect the input / output module to realize information input and output. The input / output module can be configured in the device as a component (not shown in the figure), or it can be externally connected to the device to provide corresponding functions. The input device may include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output device may include a display, a speaker, a vibrator, an indicator light, etc.

[0110] The communication interface 1040 is used to connect a communication module (not shown) to realize communication interaction between the device and other devices. The communication module can realize communication through a wired mode (such as USB, network cable, etc.) or a wireless mode (such as mobile network, WIFI, Bluetooth, etc.).

[0111] The bus 1050 includes a path that transmits information between the various components of the device (eg, the processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040).

[0112] It should be noted that, although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040 and the bus 1050, in the specific implementation process, the device may also include other components necessary for normal operation. In addition, it can be understood by those skilled in the art that the above device may also only include the components necessary for implementing the embodiments of the present specification, and does not necessarily include all the components shown in the figure.

[0113] The electronic device of the above embodiment is used to implement the corresponding shore power cable drum control method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiment, which will not be repeated here.

[0114] Based on the same inventive concept, corresponding to any of the above-mentioned embodiment methods, the present disclosure also provides a non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the shore power cable reel control method described in any of the above embodiments.

[0115] The computer-readable medium of this embodiment includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, read-only compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0116] The computer instructions stored in the storage medium of the above embodiment are used to enable the computer to execute the shore power cable drum control method as described in any of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which will not be repeated here.

[0117] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. Based on the concept of the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0118] In addition, to simplify the description and discussion, and in order not to make one or more embodiments of the present application difficult to understand, the known power / ground connections to the integrated circuit (IC) chip and other components may or may not be shown in the provided drawings. In addition, the device can be shown in the form of a block diagram to avoid making one or more embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform on which one or more embodiments of the present application will be implemented (that is, these details should be fully within the scope of understanding of those skilled in the art). In the case of elaborating specific details (e.g., circuits) to describe exemplary embodiments of the present disclosure, it is obvious to those skilled in the art that one or more embodiments of the present application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0119] Although the present disclosure has been described in conjunction with specific embodiments of the present disclosure, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0120] One or more embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present application should be included in the scope of protection of the present disclosure.

Claims

1. A shore power cable drum control method, It is characterized in that include: Monitor the water level of the pontoon connected to the cable drum in real time to obtain real-time water level information; Real-time monitoring of the tension exerted on the cable released by the cable reel to obtain real-time force information; Controlling the cable drum to retract and release the cable according to the real-time water level information and the real-time force information; The controlling of retracting and releasing the cable drum according to the real-time water level information and the real-time force information comprises: According to the real-time water level information and the real-time force information, a programmable logic controller is used to generate a retractable control signal, and the cable reel is controlled to retract and release the cable according to the retractable control signal; The method of generating a retracting and extending control signal by using a programmable logic controller according to the real-time water level information and the real-time force information includes: The retraction and extension control signal: Wherein, C(s) represents the retraction and extension control signal, G d (s) represents the real-time water level information, L(s) represents the real-time force information, R(s) is the preset initial position signal, G p (s) represents the logic control signal corresponding to the programmable logic controller, G b (s) represents the corresponding frequency conversion control signal of the variable frequency motor, and D(s) represents the disturbance signal.

2. The method according to claim 1, It is characterized in that Also includes: Monitoring and counting the number of turns of the cable on the cable drum, and calculating and determining the actual length information of the released cable; When the retractable and retractable control signal is generated by using a programmable logic controller, the actual length information is also used as an input of the programmable logic controller to perform feedback adjustment on the retractable and retractable control signal.

3. The method according to claim 2, It is characterized in that The actual length information is used as the input of the programmable logic controller to perform feedback adjustment on the retraction and extension control signal, including: The retraction and extension control signal: Wherein, C(s) represents the retraction and extension control signal, G d (s) represents the real-time water level information, L(s) represents the real-time force information, R(s) is the preset initial position signal, G p (s) represents the logic control signal corresponding to the programmable logic controller, G b (s) represents the frequency conversion control signal corresponding to the variable frequency motor, S(s) represents the actual length information, and D(s) represents the disturbance signal.

4. The method according to claim 1, It is characterized in that The controlling of retracting and releasing the cable drum according to the real-time water level information and the real-time force information comprises: Comparing the tension exerted on the cable released by the cable reel with a preset tension threshold according to the real-time force information; In response to the tension applied to the cable released by the cable reel being greater than or equal to the preset tension threshold, the cable reel is controlled to release the cable.

5. The method according to claim 2, It is characterized in that The controlling of retracting and releasing the cable drum according to the real-time water level information and the real-time force information comprises: The length of the cable required to connect the pontoon is estimated according to the real-time water level information combined with the slope environment information corresponding to the cable drum, and the estimated length information is determined; Calculate the difference ratio based on the actual length information and the estimated length information: Wherein, ρ represents the difference ratio, S ′ (s) represents the estimated length information; In response to the difference ratio being less than a preset difference ratio and the tension exerted on the cable being less than a tension safety threshold, it is determined that the cable released by the cable reel is in a safe state, and the cable reel is controlled to remain stable.

6. The method according to claim 2, It is characterized in that Also includes: comparing the number of turns of the cable with a minimum safe number of turns; In response to the number of cable turns being less than or equal to the minimum safe number of turns, a safety warning notification is issued.

7. A shore power cable drum control system, It is characterized in that include: The water level information acquisition module is configured to monitor the water level of the pontoon connected to the cable drum in real time and acquire real-time water level information; A force information acquisition module is configured to monitor the tension exerted on the cable released by the cable reel in real time and acquire real-time force information; as well as A wire retracting and releasing control module is configured to control the wire retracting and releasing of the cable drum according to the real-time water level information and the real-time force information; The shore power cable reel control system is used to execute the method according to any one of claims 1 to 6.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, It is characterized in that When the processor executes the program, the method according to any one of claims 1 to 6 is implemented.

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