Ship wharf truck queuing length estimation method, system and equipment and medium

A technology of queuing length and queuing length, which is applied in the field of truck queuing length estimation at ship wharf, can solve the problem of not considering the queue formation and dissipation process, not providing robust and accurate estimation of truck queuing length, inaccurate estimation of truck queuing length and oversaturation situation and other issues

Pending Publication Date: 2020-06-19
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Cannot accurately estimate truck queue lengths and handle oversaturation (when demand exceeds supply), and most methods do not take into account the processes involved in queue formation and dissipation, thus failing to provide a more robust and accurate method for estimating truck queue lengths

Method used

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  • Ship wharf truck queuing length estimation method, system and equipment and medium
  • Ship wharf truck queuing length estimation method, system and equipment and medium
  • Ship wharf truck queuing length estimation method, system and equipment and medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1, this embodiment provides a method for estimating the queue length of trucks at the ship wharf;

[0034] Such as figure 1 As shown, the ship terminal truck queue length estimation method includes:

[0035] S1: According to the service window utilization rate of the ship terminal to be estimated and the M / M / S queuing model, the queuing length calculation model of the steady state of the truck queuing queue is obtained;

[0036] S2: Model the formation process of the truck queue to obtain the regression model of the formation state of the queue; model the dissipation process of the truck queue to obtain the regression model of the dissipation state of the queue;

[0037] S3: Determine whether the utilization rate of the service window at the current moment is greater than the set threshold, if yes, it means that the service window is in an oversaturated state, then use the fluid flow equation to estimate the length of the queuing queue;

[0038] If not, it ...

Embodiment 2

[0135] Embodiment 2, this embodiment also provides a system for estimating the queuing length of trucks at the ship wharf;

[0136] Ship terminal truck queue length estimation system, including:

[0137] The queuing length calculation model acquisition module is configured to: obtain the queuing length calculation model of the steady state of the truck queuing queue according to the service window utilization rate of the ship wharf to be estimated and the M / M / S queuing model;

[0138] The regression model acquisition module is configured to: model the formation process of the truck queue to obtain the regression model of the formation state of the queue; model the dissipation process of the truck queue to obtain the regression model of the dissipation state of the queue;

[0139] An estimation module, which is configured to: judge whether the utilization rate of the service window at the current moment is greater than a set threshold, if yes, it means that the service window i...

Embodiment 3

[0141] Embodiment 3. This embodiment also provides an electronic device, including a memory, a processor, and computer instructions stored in the memory and run on the processor. When the computer instructions are executed by the processor, the computer instructions in Embodiment 1 are completed. described method.

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PUM

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Abstract

The invention discloses a ship wharf truck queuing length estimation method, system and device and a medium, and the method comprises the steps: obtaining a queuing length calculation model of a truckqueuing queue in a stable state according to the service window utilization rate of a to-be-estimated ship wharf and an M / M / S queuing model; modeling the truck queuing queue forming process to obtaina regression model of the queuing queue forming state; modeling the truck queuing queue dissipation process to obtain a regression model of the queuing queue dissipation state; judging whether the service window utilization rate at the current moment is greater than a set threshold value or not, if so, indicating that the service window is in a supersaturated state, and estimating the queue length by using a fluid flow equation; and if not, indicating that the service window is in an unsaturated state, comparing the estimated length of the queuing queue at the previous moment with the queuinglength of the truck queuing queue in a stable state at the current moment, and selecting a corresponding calculation model to estimate the length of the queuing queue according to a comparison result.

Description

technical field [0001] The present disclosure relates to the technical field of vehicle queuing estimation, in particular to a method, system, device and medium for estimating the queuing length of trucks at ship wharves. Background technique [0002] The statements in this section merely mention background art related to the present disclosure and do not necessarily constitute prior art. [0003] With the increase in international trade and freight volumes, traffic congestion at port terminals is becoming a serious problem. Recently, the waiting time for trucks at the terminal to pick up goods has continued to increase, and there is almost always a long queue at the gate of the terminal waiting to enter and exit the terminal, and it may even extend to the surrounding roads, causing congestion on the surrounding roads, seriously affecting the terminal and other nearby areas. The smooth operation of the enterprise has caused serious economic losses. [0004] In the process ...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F30/15G06F17/11G06F17/18G07C11/00G06F111/10
CPCG06F17/11G06F17/18G07C11/00G07C2011/04Y02T90/00
Inventor 曲文蕊李德林杨露李晓冉刘永雪刘莎莎戚懿
Owner QILU UNIV OF TECH
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