Electric train drop and pull transportation method, readable storage medium and equipment

Abstract

The invention discloses an electric train drop and pull transportation method, a readable storage medium and equipment, and belongs to the technical field of logistics transportation. The optimal logistics plan which can convey the target goods to the destination station in time and has the highest goods loading rate is formed, the corresponding electric tractor and the corresponding electric trailer are loaded through the optimal logistics plan, energy supplementation of the train in the goods transportation process is avoided, the transportation efficiency is improved, and the transportation cost is reduced. The problems that the endurance mileage is insufficient, the dead weight is large and the cargo capacity is small in the drop and pull transportation process of a current new energy train are solved.

Description

Technical Field

[0001] The present invention relates to an electric train drop-and-hook transportation method, a readable storage medium and equipment, and belongs to the technical field of logistics and transportation. Background Art

[0002] Drop-and-hook transport refers to a method of transport in which a train drops off and picks up designated trailers at various loading and unloading points according to a predetermined schedule, continuing its journey. This minimizes downtime for the tractor, maximizing tractor capacity and improving transport efficiency. Under the same conditions, this method can achieve higher transport efficiency than fixed-hook transport.

[0003] During the process of drop-and-hook transportation, new energy trains mainly face the problems of insufficient cruising range and high weight and small cargo capacity. The insufficient cruising range is mainly reflected in the fact that the remaining energy of the trailer dropped and hooked according to the plan cannot meet the requirements of directly reaching the destination station, and it needs to be recharged in the middle, which ultimately extends the transportation time; the small weight and cargo capacity is mainly reflected in the low loading rate of the trailer dropped and hooked according to the plan, which leads to increased transportation costs. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide an electric train piggyback transportation method, a readable storage medium and equipment to form an optimal logistics plan that can transport target goods to the destination station in a timely manner and with the highest cargo loading rate, thereby improving freight efficiency and solving the problems of insufficient cruising range, heavy weight and small cargo capacity faced by current new energy trains in the piggyback transportation process.

[0005] In order to solve the above technical problems, the present invention is implemented by adopting the following technical solutions: In one aspect, the present invention provides an electric train drop-and-hook transport method, comprising: Obtain the target cargo attribute data, the cargo station and destination station location, and the attribute data of the electric tractor and trailer parked at the cargo station; Based on the target cargo attribute data, the cargo destination station location, the cargo station location, and the attribute data of the electric tractor and trailer parked at the cargo station, an optimal logistics plan is formed to transport the target cargo to the destination station in a timely manner and with the highest cargo loading rate; Select the corresponding electric tractor and electric trailer according to the optimal logistics plan, and combine the selected electric tractor and electric trailer to form a freight transport train; Load the target cargo onto the freight transport train and transport the target cargo to the destination station via the freight transport train.

[0006] Furthermore, the target cargo attribute data, the location of the cargo station and the destination station, and the attribute data of the electric tractor and trailer parked at the cargo station are obtained, including: The electric trailer attribute data is expressed as: ; Represents electric trailer attribute data; Indicates the j The site where the electric trailer is located, Indicates the j Electric trailer destination sites, Indicates the j Weight of electric trailer, Indicates the j Volume of electric trailer, Indicates the j Power capacity of electric trailer; Indicates the j The operating time window of an electric trailer, Indicates the start time node of the running time window, Indicates the end time node of the running time window; The electric tractor attribute data is represented as follows: ; Represents attribute data of an electric tractor; Indicates the i Current location of electric tractors, Indicates the i Current battery level of each electric tractor, Indicates the i The maximum power of an electric tractor, Indicates the i Energy consumption rate of electric tractors, Indicates the i The average speed of electric tractors, Indicates the i The load capacity of an electric tractor, Indicates the i The volume of an electric tractor, Indicates the i The current time node of each electric tractor; The target cargo attribute data includes cargo volume and cargo weight.

[0007] Furthermore, based on the target cargo attribute data, the cargo destination station location, the cargo station location, and the attribute data of the electric tractor and trailer parked at the cargo station, an optimal logistics plan is formed that can transport the target cargo to the destination station in a timely manner and with the highest cargo loading rate, including: Based on the target cargo attribute data, the cargo destination station location, the cargo station location, and the attribute data of the electric tractor and trailer parked at the cargo station, establish the constraints that can form the optimal logistics plan; According to the constraints, select the appropriate combination of electric tractor and electric trailer and calculate the combination score; The electric tractor and electric trailer combination with the highest score is used as the optimal logistics plan.

[0008] Furthermore, the target cargo attribute data also includes temperature control requirements and earthquake resistance requirements; when calculating the combined score, if the target cargo attributes include temperature control requirements and earthquake resistance requirements, vehicles that do not have temperature control and earthquake resistance functions will be excluded.

[0009] Furthermore, the constraint conditions that can form the optimal logistics plan are established based on the target cargo attribute data, the cargo destination station location, the cargo station location, and the attribute data of the electric tractor and trailer parked at the cargo station, including: Load and volume constraints are expressed as: and ; Indicates the j Weight of electric trailer, Indicates the i The load capacity of an electric tractor, Indicates the j The volume of electric trailer, Indicates the i The capacity of an electric tractor; The time constraint is reached, expressed as: ; Indicates the i The time it takes for an electric tractor to arrive at the cargo destination; Indicates the i The current time node of an electric tractor, Indicates the j Electric trailer destination sites, Indicates the j The site where the electric trailer is located, Indicates the i The average speed of the electric tractor, Indicates the j The end time node of the operating time window of an electric trailer; The power constraint is expressed as: ; Indicates the i The remaining power of an electric tractor after the transport is completed; represents the function for calculating the minimum value, Indicates the i The maximum power of an electric tractor, Indicates the i The current charge of the electric tractor, Indicates the i The energy consumption rate of an electric tractor, Indicates the j Electric trailer power capacity.

[0010] Furthermore, selecting a suitable electric tractor and electric trailer for combination according to the constraint conditions and calculating the combination score includes: Select a suitable combination of electric tractor and electric trailer, and calculate the power gain, time urgency, and loading rate of the combination; The combined score is determined based on power gain, time urgency, and loading rate.

[0011] Furthermore, the selecting of a suitable combination of an electric tractor and an electric trailer and calculating the power gain, time urgency and loading rate of the combination include: The power gain is calculated by the following formula: ; Indicates the j The electric trailer and i The power constraints of the electric tractor combination; Indicates the j Power capacity of electric trailer, Indicates the i The energy consumption rate of an electric tractor, Indicates the j Electric trailer destination sites, Indicates the j The site where the electric trailer is located; Time urgency is calculated by the following formula: ; Indicates the j The electric trailer and i The time constraints of the electric tractor combination; Expressed as a natural constant e The exponential function with base , represents the maximum value function; Indicates the j The end time node of the operating time window of an electric trailer, Indicates the i The time it takes for an electric tractor to arrive at the cargo destination; The loading rate is calculated by the following formula: ; Indicates the j The electric trailer and i Loading ratio of electric tractor combinations; Indicates the j Weight of electric trailer, Indicates the i The load capacity of an electric tractor.

[0012] Furthermore, determining the combined score based on the power gain, time urgency, and loading rate includes: The combined score is calculated using the following formula: ; Indicates the j The electric trailer and i Combined score of electric tractor combinations; Indicates the j The electric trailer and i The power constraints of the electric tractor combination, Indicates the net power gain weight; Indicates the j The electric trailer and i The time urgency of the electric tractor combination, Indicates the time urgency weight; Indicates the j The electric trailer and i The loading rate of the electric tractor combination, Indicates the load rate weight.

[0013] A second aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the electric train drop-and-hook transport method as described above is implemented.

[0014] The present invention also provides a computer device, comprising: a memory for storing instructions; The processor is used to execute the instructions so that the device can implement the electric train drop-and-hook transportation method as described above.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention forms an optimal logistics plan based on target cargo attribute data, cargo destination site location, cargo site location, and attribute data of electric tractors and trailers parked at the cargo site, which can transport target cargo to the destination site in a timely manner and has the highest cargo loading rate. The corresponding electric tractors and electric trailers are loaded through the optimal logistics plan, which avoids the need for train refueling during cargo transportation, improves transportation efficiency, and solves the problems of insufficient cruising range, heavy weight, and small cargo capacity faced by current new energy trains in the process of drop-and-hook transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a flow chart of an electric train drop-and-hook transport method provided by an embodiment of the present invention; Figure 2 This is a flow chart of forming an optimal logistics plan provided by an embodiment of the present invention; Figure 3 This is a schematic diagram of a combination of an electric tractor and an electric trailer that meets constraint conditions provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. like Figure 1 As shown, an electric train drop-and-hook transportation method comprises: Obtain the target cargo attribute data, the cargo station and destination station location, and the electric tractor and trailer attribute data parked at the cargo station; the electric trailer attribute data is represented as: ; Represents electric trailer attribute data; Indicates the j The site where the electric trailer is located, Indicates the j Electric trailer destination sites, Indicates the j Weight of electric trailer, Indicates the j Volume of electric trailer, Indicates the j Power capacity of electric trailer; Indicates the jThe operating time window of an electric trailer, Indicates the start time node of the running time window, Indicates the end time node of the running time window; The attribute data of electric tractor is expressed as: ; Represents attribute data of an electric tractor; Indicates the i Current location of electric tractors, Indicates the i Current battery level of each electric tractor, Indicates the i The maximum power of an electric tractor, Indicates the i Energy consumption rate of electric tractors, Indicates the i The average speed of electric tractors, Indicates the i The load capacity of an electric tractor, Indicates the i The volume of an electric tractor, Indicates the i The current time node of each electric tractor; The target cargo attribute data includes cargo volume and cargo weight.

[0018] like Figure 2 As shown, based on the target cargo attribute data, the cargo destination station location, the cargo station location, and the attribute data of the electric tractor and trailer parked at the cargo station, an optimal logistics plan is formed to transport the target cargo to the destination station in a timely manner and with the highest cargo loading rate. Specifically: Based on the target cargo attribute data, the cargo destination station location, the cargo station location, and the attribute data of the electric tractor and trailer parked at the cargo station, constraints that can form an optimal logistics plan are established. The constraints include: Load and volume constraints are expressed as: and ; The time constraint is reached, expressed as: ; Indicates the i The time it takes for an electric tractor to arrive at the cargo destination; The power constraint is expressed as: ; Indicates the i The remaining power of an electric tractor after the transport is completed; represents the function for calculating the minimum value, Indicates the i Energy consumption rate of each electric tractor; Based on the constraints, a suitable electric tractor and electric trailer combination is selected and the combination score is calculated. It should be noted that the target cargo attribute data also includes temperature control and seismic resistance requirements. For example, if the target cargo storage temperature is ≠ room temperature, a vehicle with temperature control is required. When calculating the combination score, vehicles without these features are excluded if the target cargo attributes include these requirements. Select a suitable combination of electric tractor and electric trailer, and calculate the power gain, time urgency, and loading rate of the combination; Determine a combined score based on power gain, time urgency, and loading rate, including: The power gain is calculated by the following formula: ; Indicates the j The electric trailer and i The power constraints of the electric tractor combination; Time urgency is calculated by the following formula: ; Indicates the j The electric trailer and i The time constraints of the electric tractor combination; Expressed as a natural constant e The exponential function with base , represents the maximum value function; The loading rate is calculated by the following formula: ; Indicates the j The electric trailer and i Loading ratio of electric tractor combinations; The combined score is calculated using the following formula: ; Indicates the j The electric trailer and i Combined score of electric tractor combinations; Indicates the net power gain weight, reflecting the trailer power supply's gain priority over the vehicle's endurance. ; high Values, such as , then the charging frequency needs to be reduced, such as transportation to remote areas; Low Values, such as , then when the power is sufficient and the charging facilities are complete, the impact of power gain can be weakened; Indicates the time urgency weight, reflecting the sensitivity to the goods delivery time window, ; high Values, such as , has strict requirements for on-time delivery of goods, giving priority to matching goods with close deadlines, such as fresh cold chain; Low Values, such as ,The time window for ordinary goods is loose, and some timeliness can be sacrificed in exchange for other optimization goals; Indicates the loading rate weight, reflecting the optimization of vehicle resource utilization and reduction of empty load waste. ; high Values, such as , when transportation capacity is tight or cost is sensitive, full load transportation is given priority; Low Values, such as , transport during the off-season, when the transport capacity is sufficient and the waste of resources is acceptable; like Figure 3 As shown, the electric tractor and electric trailer that meet the constraints are numbered: Electric tractor: ; Electric trailer: ; Will and After the combination, the combined score is calculated, and the electric tractor and electric trailer combination with the highest score is used as the optimal logistics plan; Select the corresponding electric tractor and electric trailer according to the optimal logistics plan, and combine the selected electric tractor and electric trailer to form a freight transport train; Load the target cargo onto the freight transport train and transport the target cargo to the destination station via the freight transport train.

[0019] Example 2 A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the following method steps: Obtain the target cargo attribute data, the cargo station and destination station location, and the attribute data of the electric tractor and trailer parked at the cargo station; Based on the target cargo attribute data, the cargo destination station location, the cargo station location, and the attribute data of the electric tractor and trailer parked at the cargo station, an optimal logistics plan is formed to transport the target cargo to the destination station in a timely manner and with the highest cargo loading rate; Select the corresponding electric tractor and electric trailer according to the optimal logistics plan, and combine the selected electric tractor and electric trailer to form a freight transport train; Load the target cargo onto the freight transport train and transport the target cargo to the destination station via the freight transport train.

[0020] Example 3 The present invention also provides a computer device, comprising: a memory for storing instructions; The processor is configured to execute instructions so that the device performs the following method steps: Obtain the target cargo attribute data, the cargo station and destination station location, and the attribute data of the electric tractor and trailer parked at the cargo station; Based on the target cargo attribute data, the cargo destination station location, the cargo station location, and the attribute data of the electric tractor and trailer parked at the cargo station, an optimal logistics plan is formed to transport the target cargo to the destination station in a timely manner and with the highest cargo loading rate; Select the corresponding electric tractor and electric trailer according to the optimal logistics plan, and combine the selected electric tractor and electric trailer to form a freight transport train; Load the target cargo onto the freight transport train and transport the target cargo to the destination station via the freight transport train.

[0021] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage CD-ROMs, optical storage, etc.) containing computer-usable program code.

[0022] The present application is described with reference to the flowcharts of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process in the flowchart can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the process in the flowchart. Figure 1 a process or multiple processes or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0023] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A function specified in a process or multiple processes.

[0024] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 The steps of a specified function in a process or multiple processes.

[0025] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which are all protected by the present invention.

Claims

1. An electric train drop-and-hook transport method, characterized in that: include: Obtain the target cargo attribute data, the cargo station and destination station location, and the attribute data of the electric tractor and trailer parked at the cargo station; Based on the target cargo attribute data, the cargo destination station location, the cargo station location, and the attribute data of the electric tractor and trailer parked at the cargo station, an optimal logistics plan is formed to transport the target cargo to the destination station in a timely manner and with the highest cargo loading rate; Select the corresponding electric tractor and electric trailer according to the optimal logistics plan, and combine the selected electric tractor and electric trailer to form a freight transport train; Load the target cargo onto the freight transport train and transport the target cargo to the destination station via the freight transport train.

2. The electric train drop-and-hook transport method according to claim 1, characterized in that: Obtain the target cargo attribute data, the cargo station and destination station location, and the electric tractor and trailer attribute data parked at the cargo station, including: The electric trailer attribute data is expressed as: ； Represents electric trailer attribute data; Indicates the j The site where the electric trailer is located, Indicates the j Electric trailer destination sites, Indicates the j Weight of electric trailer, Indicates the j Volume of electric trailer, Indicates the j Power capacity of electric trailer; Indicates the j The operating time window of an electric trailer, Indicates the start time node of the running time window, Indicates the end time node of the running time window; The electric tractor attribute data is represented as follows: ； Represents attribute data of an electric tractor; Indicates the i Current location of electric tractors, Indicates the i Current battery level of each electric tractor, Indicates the i The maximum power of an electric tractor, Indicates the i Energy consumption rate of electric tractors, Indicates the i The average speed of electric tractors, Indicates the i The load capacity of an electric tractor, Indicates the i The volume of an electric tractor, Indicates the i The current time node of each electric tractor; The target cargo attribute data includes cargo volume and cargo weight.

3. The electric train drop-and-hook transport method according to claim 1, characterized in that: The optimal logistics plan that can deliver the target cargo to the destination station in a timely manner and with the highest cargo loading rate is formed based on the target cargo attribute data, the cargo destination station location, the cargo station location, and the attribute data of the electric tractor and trailer parked at the cargo station, including: Based on the target cargo attribute data, the cargo destination station location, the cargo station location, and the attribute data of the electric tractor and trailer parked at the cargo station, establish the constraints that can form the optimal logistics plan; According to the constraints, select the appropriate combination of electric tractor and electric trailer and calculate the combination score; The electric tractor and electric trailer combination with the highest score is used as the optimal logistics plan.

4. The electric train drop-and-hook transport method according to claim 3, characterized in that: The target cargo attribute data also includes temperature control requirements and earthquake resistance requirements; when calculating the combined score, if the target cargo attributes include temperature control requirements and earthquake resistance requirements, vehicles that do not have temperature control and earthquake resistance functions will be excluded.

5. The electric train drop-and-hook transport method according to claim 3, characterized in that: The constraint conditions that can form the optimal logistics plan are established based on the target cargo attribute data, the cargo destination station location, the cargo station location, and the attribute data of the electric tractor and trailer parked at the cargo station, including: Load and volume constraints are expressed as: and ; Indicates the j Weight of electric trailer, Indicates the i The load capacity of an electric tractor, Indicates the j The volume of electric trailer, Indicates the i The capacity of an electric tractor; The time constraint is reached, expressed as: ； Indicates the i The time it takes for an electric tractor to arrive at the cargo destination; Indicates the i The current time node of an electric tractor, Indicates the j Electric trailer destination sites, Indicates the j The site where the electric trailer is located, Indicates the i The average speed of the electric tractor, Indicates the j The end time node of the operating time window of an electric trailer; The power constraint is expressed as: ； Indicates the i The remaining power of an electric tractor after the transport is completed; represents the function for calculating the minimum value, Indicates the i The maximum power of an electric tractor, Indicates the i The current charge of the electric tractor, Indicates the i The energy consumption rate of an electric tractor, Indicates the j Electric trailer power capacity.

6. The electric train drop-and-hook transport method according to claim 3, characterized in that: The method of selecting a suitable electric tractor and electric trailer for combination according to the constraint conditions and calculating the combination score includes: Select a suitable combination of electric tractor and electric trailer, and calculate the power gain, time urgency, and loading rate of the combination; The combined score is determined based on power gain, time urgency, and loading rate.

7. The electric train drop-and-hook transport method according to claim 6, characterized in that: The process of selecting a suitable combination of an electric tractor and an electric trailer and calculating the power gain, time urgency, and loading rate of the combination includes: The power gain is calculated by the following formula: ； Indicates the j The electric trailer and i The power constraints of the electric tractor combination; Indicates the j Power capacity of electric trailer, Indicates the i The energy consumption rate of an electric tractor, Indicates the j Electric trailer destination sites, Indicates the j The site where the electric trailer is located; Time urgency is calculated by the following formula: ； Indicates the j The electric trailer and i The time constraints of the electric tractor combination; Expressed as a natural constant e The exponential function with base , represents the maximum value function; Indicates the j The end time node of the operating time window of an electric trailer, Indicates the i The time it takes for an electric tractor to arrive at the cargo destination; The loading rate is calculated by the following formula: ； Indicates the j The electric trailer and i Loading ratio of electric tractor combinations; Indicates the j Weight of electric trailer, Indicates the i The load capacity of an electric tractor.

8. The electric train drop-and-hook transport method according to claim 6, characterized in that: The combination score is determined based on the power gain, time urgency and loading rate, including: The combined score is calculated using the following formula: ； Indicates the j The electric trailer and i Combined score of electric tractor combinations; Indicates the j The electric trailer and i The power constraints of the electric tractor combination, Indicates the net power gain weight; Indicates the j The electric trailer and i The time urgency of the electric tractor combination, Indicates the time urgency weight; Indicates the j The electric trailer and i The loading rate of the electric tractor combination, Indicates the load rate weight.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the electric train drop-and-hook transportation method according to any one of claims 1 to 8 is implemented.

10. A computer device, characterized in that: include: a memory for storing instructions; The processor is used to execute the instructions so that the device implements the electric train drop-and-hook transportation method as described in any one of claims 1 to 8.

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