Port warehouse trailer dispatching method and system

Abstract

The invention relates to the technical field of logistics distribution, in particular to a port warehouse trailer dispatching method and system. The method comprises the following steps: obtaining transport vehicle task information and port warehouse information; constructing a priority evaluation model, and combining the priority evaluation model and the transport vehicle task information to obtain a comprehensive priority level of the transport vehicle; according to the port storage yard information, dividing trailer dispatching rounds, and based on the trailer dispatching rounds, obtaining the weights of clamping vehicles in the yard; and combining the comprehensive priority level of the transport vehicle and the weight of the in-yard clamping vehicle to complete the distribution of the port warehouse yard trailers. The round concept is introduced, the scheduling strategy is dynamically adjusted by accurately calculating the number of clamped vehicles, the weight of the clamped vehicles, the number of trailers, task grouping and other key factors in each round according to the requirements of the warehouse, the number of the clamped vehicles and the number of the trailers and the priority of the tasks, it is ensured that the tasks are completed in time, and the utilization efficiency of port resources is maximized.

Description

Technical Field

[0001] The present invention relates to the technical field of logistics distribution, and in particular to a method and system for dispatching trailers in a port yard. Background Art

[0002] The existing trailer dispatching in port yards usually relies on manual dispatching, which has problems such as low dispatching efficiency, uneven resource allocation and high operating costs. In the operation of general cargo terminals, the dispatching principle is one of the key factors to ensure the operation efficiency and rational use of resources. Therefore, there is an urgent need for an automated and intelligent trailer dispatching method and system to improve the efficiency of port logistics. Summary of the invention

[0003] In view of the shortcomings of the existing methods and the needs of practical applications, in order to improve the utilization efficiency of port resources, the problem of intelligent dispatching method for port yard trailers is solved. On the one hand, the present invention provides a port yard trailer dispatching method, comprising the following steps: Acquire the task information of the transport vehicle and the port yard information; construct a priority evaluation model, and obtain the comprehensive priority level of the transport vehicle by combining the priority evaluation model and the task information of the transport vehicle; divide the trailer dispatch rounds according to the port yard information, and obtain the weight of the clamping vehicle in the yard based on the trailer dispatch rounds; complete the trailer dispatch of the port yard by combining the comprehensive priority level of the transport vehicle and the weight of the clamping vehicle in the yard. The present invention introduces the concept of rounds, and in each round, by accurately calculating the key factors such as the number of clamping vehicles in the yard, the weight of the clamping vehicles, the number of trailers, and the task grouping, the scheduling strategy is dynamically adjusted according to the needs of the yard, the number of clamping vehicles and trailers, and the priority of the task, to ensure that the task is completed in time and maximize the utilization efficiency of port resources, and solve the problem of intelligent dispatching method for trailers in port yards.

[0004] Optionally, the priority evaluation model satisfies the following formula:

[0005] in, Indicates the overall priority level of the transport vehicle. represents the load weight of the transport vehicle, represents the distance weight of the transport vehicle, Indicates the mission urgency. The invention determines the priority of a transport vehicle through its task information, which is conducive to the reasonable allocation of resources, helps to reduce the waiting time of trailers, improves operation efficiency and reduces operation costs.

[0006] Optionally, the load weight satisfies the following formula:

[0007] in, represents the load weight of the transport vehicle, Indicates the load of the transport vehicle, Indicates the maximum load of the transport vehicle.

[0008] Optionally, the distance weight satisfies the following formula:

[0009] in, represents the distance weight of the transport vehicle, Indicates the distance between the transport vehicle and the warehouse. Represents the average distance of all transport vehicles from the warehouse.

[0010] Optionally, the trailer dispatch rounds are divided according to the port yard information to satisfy the following formula:

[0011] in, Indicates the number of trailer dispatch rounds, Indicates the minimum value, represents the rounding function, Indicates the number of trailers in the yard, Indicates the number of clamping vehicles that have confirmed the cargo location in the warehouse. The invention introduces the concept of rounds, which is conducive to dynamically adjusting the allocation of equipment and operators according to the actual situation of the operation; and timely feedback and adjustment of the weight allocation strategy according to the results of each operation; and can also gradually optimize the weight allocation plan through multiple rounds of iterations, thereby improving the overall operation efficiency.

[0012] Optionally, based on the trailer dispatching round, the weight of the clamped vehicle in the yard is obtained, satisfying the formula:

[0013] in, Indicates the weight of the clamped vehicle in the field. Indicates the number of clamping vehicles that have confirmed the cargo location in the warehouse. Indicates the number of trailer dispatch rounds, The weight of the trailers in the yard obtained by the present invention is conducive to quickly analyzing the resource situation of the yard, and further conducive to improving the allocation efficiency of the present invention.

[0014] Optionally, the step of combining the comprehensive priority level of the transport vehicle and the weight of the clamping vehicle in the yard to complete the port yard trailer dispatch includes the following steps: According to the weight of the clamped vehicle in the yard, the allocable yard resources are obtained; the optimal yard resources are selected from the allocable yard resources; and the port yard trailer dispatch result is obtained by combining the comprehensive priority level of the transport vehicle and the optimal yard resources.

[0015] Optionally, the allocable yard resources are obtained according to the weight of the clamped vehicles in the yard, satisfying: The weight of the clamped vehicle in the yard is greater than 0, and the corresponding yard is an allocable yard resource.

[0016] Optionally, the selecting of the optimal warehouse resource from the allocatable warehouse resources satisfies: If there are multiple allocable yards, the most recently unallocated yard is used as the optimal yard resource; if there is only one allocable yard, the yard is used as the optimal yard resource. The present invention helps to dynamically adjust the operation plan and improve the operation efficiency and resource utilization by updating the status of the yard clamp and the trailer in real time.

[0017] In the second aspect, in order to efficiently execute the port yard trailer dispatching method provided by the present invention, the present invention also provides a port yard trailer dispatching system, including a processor, an input device, an output device and a memory, wherein the processor, the input device, the output device and the memory are interconnected, wherein the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to call the program instructions to execute the port yard trailer dispatching method as described in the first aspect of the present invention. The port yard trailer dispatching system of the present invention has a compact structure and stable performance, and can stably execute the port yard trailer dispatching method provided by the present invention, further improving the overall applicability and practical application ability of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A flow chart of a method for dispatching trailers in a port yard provided by an embodiment of the present invention; Figure 2 A framework diagram of a port yard trailer dispatching system provided by an embodiment of the present invention; Figure 3 A schematic structural diagram of a port yard trailer dispatching device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The specific embodiments of the present invention will be described in detail below. It should be noted that the embodiments described herein are only for illustration and are not intended to limit the present invention. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is obvious to those of ordinary skill in the art that these specific details do not need to be adopted to implement the present invention. In other examples, in order to avoid confusing the present invention, known circuits, software or methods are not specifically described.

[0020] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "in one embodiment," "in an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or subcombination. In addition, it should be understood by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale.

[0021] See also Figure 1 In order to improve the utilization efficiency of port resources and solve the problem of intelligent dispatching method for port yard trailers, the present invention provides a method for dispatching port yard trailers, such as Figure 1 As shown, in one embodiment, the method includes the following steps: S1. Obtaining the transport vehicle mission information and port yard information.

[0022] In the embodiment, the transport vehicle task information and the port storage yard information are retrieved from the port management system.

[0023] The port management system is a comprehensive software system used to collect, process, store and transmit port-related information. It covers all aspects of port operations, including cargo loading and unloading, ship scheduling, warehouse management, personnel arrangements and equipment management.

[0024] Transport vehicle mission information, including the transport vehicle's load capacity, maximum load capacity, type and quantity of cargo, priority or urgency, target warehouse, transportation route and distance, and other related information.

[0025] Port yard information, including the yard area, number of clamps, number of trailers and their respective running speeds and load capacities, as well as real-time data of clamp trucks, including location, status, and task progress information.

[0026] S2. Construct a priority evaluation model, and combine the priority evaluation model with the transport vehicle task information to obtain a comprehensive priority level of the transport vehicle.

[0027] In the embodiment, the priority evaluation model constructed in step S2 satisfies the following formula:

[0028] in, Indicates the overall priority level of the transport vehicle. represents the load weight of the transport vehicle, represents the distance weight of the transport vehicle, Indicates the mission urgency. Represents a weight factor. The weight factor is preset according to actual conditions. In this embodiment, , , The mission urgency is graded according to the cargo and load conditions. , the task is not urgent , in other embodiments, it can be further subdivided.

[0029] Furthermore, the load weight satisfies the following formula:

[0030] in, represents the load weight of the transport vehicle, Indicates the load of the transport vehicle, Indicates the maximum load of the transport vehicle.

[0031] The distance weight satisfies the following formula:

[0032] in, represents the distance weight of the transport vehicle, Indicates the distance between the transport vehicle and the warehouse. Represents the average distance of all transport vehicles from the warehouse.

[0033] In the embodiment, corresponding data is obtained from the transport vehicle task information, and then the result, i.e., the comprehensive priority level of the transport vehicle, is obtained through the priority evaluation model.

[0034] S3. According to the port yard information, trailer dispatch rounds are divided, and based on the trailer dispatch rounds, weights of clamped vehicles in the yard are obtained.

[0035] In an embodiment, the trailer dispatch rounds are divided according to the port yard information to satisfy the following formula:

[0036] in, Indicates the number of trailer dispatch rounds, Indicates the minimum value, represents the rounding function, Indicates the number of trailers in the yard, Indicates the number of clamping vehicles with confirmed cargo locations in the warehouse.

[0037] Furthermore, based on the trailer dispatching round, the weight of the clamped vehicle in the yard is obtained, which satisfies the formula:

[0038] in, Indicates the weight of the clamped vehicle in the field. Indicates the number of clamping vehicles that have confirmed the cargo location in the warehouse. Indicates the number of trailer dispatch rounds, Indicates the number of trailers in the yard. The number of clamp trucks in the yard refers to the number of clamp trucks that have confirmed cargo positions in the current round.

[0039] It should be understood that the same trailer may carry goods from multiple bills of lading, i.e., transport vehicles, and can be assigned tasks among multiple warehouses, in which case these warehouses will be classified into the same group for competition. When multiple warehouses compete for trailer resources, the warehouses belonging to the same trailer will be classified into one group.

[0040] During the terminal operation, real-time update of the status of the yard clamp and trailer is a key link to ensure the smooth progress of the operation. Sensors installed on the yard clamp and trailer can monitor their position, speed, load and other status information in real time; the monitored status information is transmitted to the central control system through the network to ensure the timeliness and accuracy of the data; the central control system updates the current status of the yard clamp and trailer in a timely manner based on the received status information, providing the latest basis for subsequent task allocation and scheduling. Real-time update of the status of the yard clamp and trailer helps to dynamically adjust the operation plan and improve operation efficiency and resource utilization.

[0041] Furthermore, in some other embodiments, the weight of the clamping vehicle on site may also need to consider the maintenance status of the equipment and the skill level of the operators. Equipment that is regularly maintained can reduce the failure rate and improve operating efficiency; and operators with professional skills can complete various tasks more efficiently.

[0042] S4. Based on the comprehensive priority of the transport vehicle and the weight of the clamping vehicle in the yard, the port yard trailer dispatch is completed.

[0043] In the embodiment, the step S4 combines the comprehensive priority level of the transport vehicle and the weight of the clamping vehicle in the yard to complete the port yard trailer dispatch, including the following steps: S41. Obtain allocatable yard resources according to the weights of the clamped vehicles in the yard.

[0044] The allocable yard resources are obtained according to the weight of the clamped vehicle in the yard, and if: the weight of the clamped vehicle in the yard is greater than 0, the corresponding yard is the allocable yard resource.

[0045] S42: Select the optimal warehouse resource from the allocatable warehouse resources.

[0046] The optimal warehouse resource is selected from the allocable warehouse resources to meet the following requirements: If there are multiple allocatable warehouses, the nearest unallocated warehouse will be used as the optimal warehouse resource; if there is only one allocatable warehouse, that warehouse will be used as the optimal warehouse resource.

[0047] S43. Combining the comprehensive priority level of the transport vehicle and the optimal warehouse resources, obtaining a port warehouse trailer dispatch result.

[0048] According to the queuing order of the comprehensive priority of the transport vehicles, the tasks to be assigned, i.e. the transport vehicles to be entered into the port, are matched with the optimal warehouse resources to obtain the trailer dispatching result of the port warehouse.

[0049] Furthermore, the port yard trailer dispatching goal is to minimize cost, maximize efficiency or meet certain constraints, which may involve multiple factors, such as the waiting time of the transport vehicle, the driving distance and the urgency of the demand, etc. In other embodiments, relevant functions can be set according to actual conditions, such as allocation decision = f (vehicle status, demand queue, system parameters), where f (·) is a function defined according to a specific strategy, which comprehensively considers the vehicle status (such as location, available time, etc.), the demand queue (such as demand, time window, etc.) and the system parameters.

[0050] In a specific embodiment, an event list is created according to the transporter comprehensive priority queuing order, as follows: Transport vehicle 1, cargo bill of lading corresponds to warehouse 1 and warehouse 2; Transport vehicle 2, the cargo bill of lading corresponds to warehouse 2 and warehouse 3; Transport vehicle 3, the cargo bill of lading corresponds to warehouse 1 and warehouse 3; Transport vehicle 4, cargo bill of lading corresponds to warehouse 1 and warehouse 2; Transport vehicle 5, the cargo bill of lading corresponds to warehouse 2 and warehouse 3; Transport vehicle 6, cargo bill of lading corresponds to warehouse 1 and warehouse 3; Transport vehicle 7, cargo bill of lading corresponds to warehouse 1 and warehouse 2; Transport vehicle 8, cargo bill of lading corresponds to warehouse 2 and warehouse 3; Transport vehicle 9, cargo bill of lading corresponds to warehouse 1 and warehouse 3; There are currently warehouses 1~3 participating in the current operation, clamps B1~B10 participating in the operation, and the allocation is as follows: Clamps B1 and B2 involved in the operation in warehouse 1; Clamps B3, B4, and B5 involved in the operation in warehouse 2; Clamps B6, B7, B8, B9, and B10 involved in the operation in warehouse 3; Transport vehicle 1 enters the yard, and the weights of the clamping vehicles in the yard are all greater than 0. The corresponding yards are all assignable yard resources. No vehicles are assigned to the two yards, so the yard is selected according to the operation sequence of the yard plan. Currently, yard 1 is selected as the optimal yard resource; Transport vehicle 2 enters the yard, and the weights of the clamping vehicles in the yard are all greater than 0. The corresponding yards are all assignable yard resources. No vehicles are assigned to the two yards, so the yard is selected according to the operation sequence of the yard plan. Currently, yard 2 is selected as the optimal yard resource; Transport vehicle 3 enters the yard, and the weights of the clamping vehicles in the yard are all greater than 0. The corresponding yards are all assignable yard resources. Yard 3 is the most recently unassigned yard, and currently selected yard 3 is the optimal yard resource; Transport vehicle 4 enters the yard, and the weights of the clamping vehicles in the yard are all greater than 0. The corresponding yards are all assignable yard resources. Yard 1 is the most recently unassigned yard, and Yard 1 is currently selected as the optimal yard resource; Transport vehicle 5 enters the yard, and the weights of the clamping vehicles in the yard are all greater than 0. The corresponding yards are all assignable yard resources. Yard 2 is the most recently unassigned yard, and Yard 2 is currently selected as the optimal yard resource; Transport vehicle 6 enters the yard. Only the weight of the clamping vehicle in yard 3 is greater than 0. Yard 3 is currently selected as the optimal yard resource. Transport vehicle 7 enters the yard. Only the weight of the clamping vehicle in yard 2 is greater than 0. Yard 2 is currently selected as the optimal yard resource. Transport vehicle 8 enters the yard. Only the weight of the clamping vehicle in yard 3 is greater than 0. Yard 3 is currently selected as the optimal yard resource. Transport vehicle 9 enters the yard, and only the weight of the clamping vehicle in yard 3 is greater than 0. Yard 3 is currently selected as the optimal yard resource.

[0051] See also Figure 2 In an embodiment, in order to efficiently execute the port yard trailer dispatching method provided by the present invention, the present invention also provides a port yard trailer dispatching system, including: an input device, an output device, a processor, and a memory, wherein the input device, the output device, the processor, and the memory are interconnected, and the memory contains program instructions, and the program instructions are used for the steps of the port yard trailer dispatching method. The port yard trailer dispatching system of the present invention has a compact structure and stable performance, and can stably execute the port yard trailer dispatching method of the present invention, further improving the overall applicability and practical application ability of the present invention.

[0052] In an embodiment, the processor may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. An input device may be used to obtain data information. An output device may be used to output the results obtained by storing program instructions contained in a computer program in a memory provided by the present invention. The memory may include a read-only memory and a random access memory, and provide instructions and data to the processor. A portion of the memory may also include a non-volatile random access memory.

[0053] In yet another alternative embodiment, see Figure 3 In order to efficiently execute the port yard trailer dispatching method provided by the present invention, this embodiment also provides a port yard trailer dispatching device, such as Figure 3 As shown, including: The memory 10 is used to store computer programs; the processor 20 is used to execute the computer programs to implement the above-mentioned port yard trailer dispatching method. The memory 10, the processor 20, the communication interface 31 and the communication bus 32. The memory 10, the processor 20 and the communication interface 31 all communicate with each other through the communication bus 32.

[0054] In an embodiment, the memory 10 is used to store one or more program instructions. The memory 10 may store program instructions for implementing the following functions: Obtain transport vehicle mission information and port warehouse information; Constructing a priority evaluation model, and combining the priority evaluation model with the transport vehicle task information to obtain a comprehensive priority level of the transport vehicle; According to the port yard information, trailer dispatch rounds are divided, and based on the trailer dispatch rounds, weights of clamped vehicles in the yard are obtained; The port yard trailer dispatch is completed by combining the comprehensive priority level of the transport vehicle and the weight of the clamping vehicle in the yard.

[0055] In one possible implementation, the memory 10 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, and at least one application required for a function, etc.; the data storage area may store data created during use. In addition, the memory 10 may include a read-only memory and a random access memory, and provide instructions and data to the processor. A portion of the memory may also include NVRAM. The memory stores an operating system and operating instructions, executable modules or data structures, or a subset thereof, or an extended set thereof, wherein the operating instructions may include various operating instructions for implementing various operations. The operating system may include various system programs for implementing various basic tasks and processing hardware-based tasks.

[0056] The processor 20 may be a central processing unit (CPU), an application specific integrated circuit, a digital signal processor, a field programmable gate array or other programmable logic device, and the processor 20 may be a microprocessor or any conventional processor, etc. The processor 20 may call a program stored in the memory 10. The communication interface 31 may be an interface of a communication module, and is used to connect with other devices or systems.

[0057] Of course, it should be noted that Figure 3 The structure shown does not constitute a limitation on the port yard trailer dispatching device in this embodiment. In actual applications, the port yard trailer dispatching device may include Figure 3 More or fewer components than shown, or combinations of certain components.

[0058] The embodiment also provides a storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the above-mentioned port yard trailer dispatching method are implemented.

[0059] The storage medium may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0060] In summary, the present invention introduces the concept of rounds, and in each round, by accurately calculating the key factors such as the number of clamping vehicles, the weight of clamping vehicles, the number of trailers, and the task grouping in the yard, the scheduling strategy is dynamically adjusted according to the needs of the yard, the number of clamping vehicles and trailers, and the priority of the task, to ensure that the task is completed in time and maximize the utilization efficiency of port resources, and solve the problem of intelligent dispatching methods for trailers in port yards. Therefore, the present invention effectively overcomes the various shortcomings of the prior art and has a high industrial utilization value.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope recorded in the present invention.

Claims

1. A method for dispatching trailers in a port yard, characterized in that: The port yard trailer dispatching method comprises the following steps: Obtain transport vehicle mission information and port warehouse information; Constructing a priority evaluation model, and combining the priority evaluation model with the transport vehicle task information to obtain a comprehensive priority level of the transport vehicle; According to the port yard information, trailer dispatch rounds are divided, and based on the trailer dispatch rounds, weights of clamped vehicles in the yard are obtained; The port yard trailer dispatch is completed by combining the comprehensive priority level of the transport vehicle and the weight of the clamping vehicle in the yard.

2. The method for dispatching trailers in a port yard according to claim 1, characterized in that: The priority evaluation model satisfies the following formula: ,in, Indicates the overall priority level of the transport vehicle. represents the load weight of the transport vehicle, represents the distance weight of the transport vehicle, Indicates the mission urgency. Represents the weight factor.

3. The method for dispatching trailers in a port yard according to claim 2, characterized in that: The load weight satisfies the following formula: ,in, represents the load weight of the transport vehicle, Indicates the load of the transport vehicle, Indicates the maximum load of the transport vehicle.

4. The method for dispatching trailers in a port yard according to claim 2, characterized in that: The distance weight satisfies the following formula: ,in, represents the distance weight of the transport vehicle, Indicates the distance between the transport vehicle and the warehouse. Represents the average distance of all transport vehicles from the warehouse.

5. The method for dispatching trailers in a port yard according to claim 1, characterized in that: The trailer dispatch rounds are divided according to the port yard information to satisfy the following formula: ,in, Indicates the number of trailer dispatch rounds, Indicates the minimum value, represents the rounding function, Indicates the number of trailers in the yard, Indicates the number of clamping vehicles with confirmed cargo locations in the warehouse.

6. The method for dispatching trailers in a port yard according to claim 5, characterized in that: Based on the trailer dispatching round, the weight of the clamped vehicle in the yard is obtained, which satisfies the formula: ,in, Indicates the weight of the clamped vehicle in the field. Indicates the number of clamping vehicles that have confirmed the cargo location in the warehouse. Indicates the number of trailer dispatch rounds, Indicates the number of trailers in the yard.

7. The method for dispatching trailers in a port yard according to claim 1, characterized in that: The method of combining the comprehensive priority level of the transport vehicle and the weight of the clamping vehicle in the yard to complete the port yard trailer dispatch includes the following steps: According to the weight of the clamped vehicle in the yard, the allocable yard resources are obtained; Selecting the optimal warehouse resource from the allocatable warehouse resources; The port yard trailer dispatch result is obtained by combining the comprehensive priority level of the transport vehicle and the optimal yard resources.

8. The method for dispatching trailers in a port yard according to claim 7, characterized in that: The allocable yard resources are obtained according to the weight of the clamped vehicle in the yard, satisfying: The weight of the clamped vehicle in the yard is greater than 0, and the corresponding yard is an allocable yard resource.

9. The method for dispatching trailers in a port yard according to claim 7, characterized in that: The optimal warehouse resource is selected from the allocable warehouse resources to meet the following requirements: If there are multiple allocable warehouses, the nearest unallocated warehouse will be used as the optimal warehouse resource; If there is only one allocatable warehouse, then this warehouse will be used as the optimal warehouse resource.

10. A port yard trailer dispatching system, characterized in that: The port yard trailer dispatching system includes: an input device, an output device, a processor, and a memory. The input device, output device, processor, and memory are interconnected. The memory includes program instructions, and the program instructions are used to execute the port yard trailer dispatching method according to any one of claims 1 to 9.

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