Polling coupling control method and system for material traffic

Abstract

The application provides a material traffic polling coupling control method and system in the technical field of material sorting, and the method comprises the following steps: step S10, polling requests are sent to each intersection of a No. 1 sorting line and a No. 2 sorting line; step S20, a PLC performs comprehensive logical judgment based on the polling request, a current intersection and a task path of an adjacent intersection, and obtains a feedback result of a task type; step S30, the PLC performs warehouse-out action judgment again based on the feedback result and a sensor arranged on the No. 1 sorting line and the No. 2 sorting line, and performs corresponding action when a preset condition is met, and the task path is transmitted to a next intersection; and step S40, the PLC monitors a conveying process until a task is completed and feedback is performed, and then triggers the polling request of the next intersection. The application has the advantages that a solution is provided for the fairness of the warehouse-out of two or more associated intersections, and the efficiency of material sorting is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material sorting, and particularly relates to a polling coupling control method and system for material traffic. BACKGROUND

[0002] In the production process, enterprises need to sort and transfer materials. With the development of enterprises, products are continuously improved. Traditional one-way sorting lines (material conveying belts) cannot meet the current sorting needs, so cross-shaped sorting lines are combined.

[0003] As shown in FIGS. Figure 5 and Figure 6 , the left side is a No. 1 sorting line, and the right side is a No. 2 sorting line. The lower end of the No. 1 sorting line is a No. 1 discharge port, and the lower end of the No. 2 sorting line is a No. 2 discharge port. The materials at intersection A can be discharged from the No. 1 discharge port or the No. 2 discharge port, the materials at intersection B can be discharged from the No. 1 discharge port, the No. 2 discharge port or intersection A, the materials at intersection C can be discharged from the No. 1 discharge port, the No. 2 discharge port or intersection D, and the materials at intersection D can be discharged from the No. 1 discharge port or the No. 2 discharge port. There are the following conveying conditions:

[0004] 1 material discharge:

[0005] 2 material discharge:

[0006] 3 material discharge: N3 = 2 (2 x 3 x 3) + 2 (2 x 2 x 3) = 60;

[0007] 4 material discharge: N4 = 2 x 3 x 3 x 2 = 24;

[0008] Total discharge condition: N 总 = N1 + N2 + N3 + N4 = 127;

[0009] For the 127 discharge conditions, the traditional method is to simply control the discharge order according to priority, such as setting intersections A, B and E to discharge in sequence, which undoubtedly leads to uneven opportunities for each intersection to discharge, causing some intersections to wait until the higher-priority intersections have completed discharging before discharging, which is prone to congestion.

[0010] Therefore, how to provide a polling coupling control method and system for material traffic to improve the efficiency of material sorting has become a technical problem to be solved. SUMMARY

[0011] The technical problem to be solved by the present application is to provide a polling coupling control method and system for material traffic to improve the efficiency of material sorting.

[0012] In a first aspect, the present application provides a polling coupling control method for material traffic, comprising the following steps:

[0013] Step S10, polling requests are made to each intersection of the first sorting line and the second sorting line;

[0014] Step S20, the PLC makes comprehensive logical judgments based on the polling requests, the task path of the current intersection and the adjacent intersection, and obtains a feedback result of the task type;

[0015] Step S30, the PLC makes outbound action judgments again based on the feedback result and the sensors arranged on the first sorting line and the second sorting line, and performs corresponding actions when preset conditions are met, and the task path is passed to the next intersection;

[0016] Step S40, the PLC monitors the conveying process until the task is completed and feedback is made, thereby triggering the polling request of the next intersection.

[0017] Further, in the step S10, the polling path of the polling request comprises one large polling path and two small polling paths; the large polling path is A→B→C→D; and the small polling paths are A→B→E and D→C→E.

[0018] The large polling path and the small polling path are controlled through non-direct coupling.

[0019] Further, in the step S20, the task type is a cross-sorting line task, a straight-line task or no task.

[0020] Further, in the step S30, the preset condition is specifically that it is detected through two polling paths that there is material at the intersection.

[0021] Further, the step S40 is specifically:

[0022] The PLC monitors the path information of the material conveying process until the task is completed, and feeds back the execution result of the task completion, thereby triggering the polling request of the next intersection.

[0023] In a second aspect, the present application provides a polling coupling control system for material traffic, comprising the following modules:

[0024] A polling request module is configured to make polling requests to each intersection of the first sorting line and the second sorting line;

[0025] A comprehensive logical judgment module is configured to make comprehensive logical judgments by the PLC based on the polling requests, the task path of the current intersection and the adjacent intersection, and obtain a feedback result of the task type.

[0026] The outbound action judgment module is used by the PLC to make outbound action judgment again based on the feedback result and the sensors set on sorting line 1 and sorting line 2, and execute the corresponding action when the preset conditions are met, and pass the task path to the next intersection.

[0027] The conveying monitoring module is used by the PLC to monitor the conveying process until the task is completed and to provide feedback, thereby triggering the polling request at the next intersection.

[0028] Furthermore, in the polling request module, the polling path of the polling request includes a large polling path and two small polling paths; the large polling path is A→B→C→D; the small polling paths are A→B→E and D→C→E;

[0029] The large polling path and the small polling path are controlled through non-direct coupling.

[0030] Furthermore, in the integrated logic judgment module, the task type is a cross-sorting line task, a straight-line task, or no task.

[0031] Furthermore, in the outbound action judgment module, the preset condition is specifically: material is detected at the intersection through two polling paths.

[0032] Furthermore, the conveying monitoring module specifically comprises:

[0033] The PLC monitors the path information of the material conveying process until the task is completed, and feeds back the execution result of the task completion, thereby triggering the polling request at the next intersection.

[0034] The advantages of this invention are:

[0035] By setting polling paths for sorting lines 1 and 2, each polling path includes a large polling path and two smaller polling paths. These large and small polling paths are not directly coupled, enabling comprehensive judgment of sorting actions at each intersection. When there is incoming material at an intersection (as per...),... Figure 5 Taking point B as an example, the system determines the process based on the material's discharge path. If it's a direct discharge, when the small polling path reaches the request at this intersection, direct discharge is performed; when the large polling path reaches the request at this intersection, a completion message is sent, ensuring both levels of polling can continue. However, if the discharge crosses the sorting line (e.g., ... Figure 5 If material is discharged from point B to port 2, then the material can only be discharged across the sorting line after both the large polling path and the small polling path have reached this port. During the discharge process, the polling action of the small polling path at this port is completed (e.g., ...). Figure 3When B has arrived at E, the feedback B point small polling request is completed, and the task of the small polling path (ABE) continues to proceed without waiting for the cross sorting line action to be completed; and when the material arrives at the E point, it enters another small polling path DCE control and finally reaches the No. 2 discharge port; the control mode of the multi-stage polling coupling controls the material of each intersection to discharge, which not only completely avoids the situation that a certain intersection is always waiting, but also improves the independence of the judgment of each execution intersection itself, achieves the real-time of each intersection discharge, and finally greatly improves the efficiency of material sorting. BRIEF DESCRIPTION OF DRAWINGS

[0036] The application will be further described below with reference to the drawings and embodiments.

[0037] Figure 1 is a flowchart of a material traffic polling coupling control method of the application.

[0038] Figure 2 is a structural schematic diagram of a material traffic polling coupling control system of the application.

[0039] Figure 3 is a multi-stage polling diagram of the application.

[0040] Figure 4 is a multi-stage polling coupling control diagram of the application.

[0041] Figure 5 is a cross sorting line discharge diagram of the application.

[0042] Figure 6 is a self sorting line discharge diagram of the application. DETAILED DESCRIPTION

[0043] The technical solution in the embodiments of the application has the following general idea: the polling paths are coupled to poll each intersection of two sorting lines, when there is material in a certain intersection, it is judged whether it is cross sorting line discharge, if it is cross sorting line discharge, it is discharged when the other sorting line is idle, if it is not cross sorting line discharge, it is directly discharged according to the preset discharge path, so as to guarantee the equal opportunity of each intersection to discharge and improve the efficiency of material sorting.

[0044] Please refer to Figures 1 to 6 , a preferred embodiment of a material traffic polling coupling control method of the application, comprising the following steps:

[0045] Step S10, polling each intersection of the No. 1 sorting line and the No. 2 sorting line;

[0046] Step S20, the PLC makes comprehensive logical judgment based on the polling request, the received current intersection and the task path of the adjacent intersection, and obtains the feedback result of the task type; the task polling mode is adopted in the application instead of the timing polling mode, so as to be more closely combined with the actual working condition, save system resources, and each polling period is millisecond level; the task path is the program information carried by the roller, which refers to the action target, for example, the task path 1 is B port straight, the task path 2 is B port cross line body, and the task path 3 is B port moving to A port;

[0047] Step S30, the PLC makes outbound action judgment again based on the feedback result and the sensor arranged on the first sorting line and the second sorting line, and executes the corresponding action when the preset condition is met, and the task path is transmitted to the next intersection;

[0048] Step S40, the PLC monitors the conveying process until the task is completed and feedback is performed, and then triggers the polling request of the next intersection.

[0049] In the step S10, the polling path of the polling request includes one large polling path and two small polling paths; the large polling path is A→B→C→D; and the small polling paths are A→B→E and D→C→E.

[0050] The large polling path and the small polling path are controlled through non-direct coupling, so as to reduce the coupling viscosity and realize the simplicity of control.

[0051] The application can judge the state of each intersection and the execution of the task through the polling path, and realizes the efficient discharge of request, response and completion.

[0052] By setting the small polling paths of the first sorting line and the second sorting line as opposite directions, that is, one clockwise and the other counterclockwise, the conflict in the conveying process of B→A or C to D can be avoided.

[0053] In the step S20, the task type is a cross sorting line task, a straight task or no task.

[0054] In the step S30, the preset condition is specifically that the existence of materials in the intersection is detected through two polling paths.

[0055] The step S40 is specifically:

[0056] The PLC monitors the path information of the material conveying process until the task is completed, and feeds back the execution result of the task completion, and then triggers the polling request of the next intersection.

[0057] For example, when it is found that intersection B has materials during the execution of the large polling path, and the small polling path (A→B→E) polls intersection B, the outfeed path of intersection B is determined, if the outfeed is across the sorting line, the materials are transported to intersection E, and only the current task is allowed to be executed, avoiding the conflict of intersection A, intersection B and intersection E; if the small polling path (D→C→E) has a task at this time, the task is waited for, and the outfeed is performed after being idle, avoiding the conflict.

[0058] The preferred embodiment of the polling coupling control system of the material traffic of the application comprises the following modules:

[0059] The polling request module is used for polling requests to each intersection of the No. 1 sorting line and the No. 2 sorting line.

[0060] The comprehensive logical judgment module is used for the comprehensive logical judgment of the PLC based on the polling request, the received current intersection and the task path of the adjacent intersection, to obtain the feedback result of the task type; the task polling mode is adopted instead of the timing polling mode in the application, so as to be more closely combined with the actual working condition, save the system resources, and each polling period is in the order of milliseconds; the task path is the program information carried by the drum, which refers to the action target, for example, task path 1 is B straight, task path 2 is B cross line body, and task path 3 is B moving to A.

[0061] The outfeed action judgment module is used for the outfeed action judgment of the PLC based on the feedback result and the sensor arranged on the No. 1 sorting line and the No. 2 sorting line, and the corresponding action is executed when the preset condition is met, and the task path is transmitted to the next intersection.

[0062] The conveying monitoring module is used for the monitoring of the conveying process by the PLC until the task is completed and the feedback is performed, and then the polling request of the next intersection is triggered.

[0063] In the polling request module, the polling path of the polling request comprises a large polling path and two small polling paths; the large polling path is A→B→C→D; and the small polling paths are A→B→E and D→C→E.

[0064] The large polling path and the small polling path are controlled through non-direct coupling, so as to reduce the coupling viscosity and realize the simplicity of control.

[0065] The state of each intersection and the execution of the task can be determined through the polling path, so as to realize the efficient outfeed of request, response and completion.

[0066] By setting the small polling paths of the No. 1 sorting line and the No. 2 sorting line in opposite directions, that is, one clockwise and the other counterclockwise, the conflict in the conveying process of B→A or C to D can be avoided.

[0067] In the comprehensive logic judgment module, the task type is a cross-sorting line task, a straight-line task, or no task.

[0068] In the outbound action judgment module, the preset condition is specifically: material is detected at the intersection through two polling paths.

[0069] The conveying monitoring module is specifically:

[0070] The PLC monitors the path information of the material conveying process until the task is completed, and feeds back the execution result of the task completion, thereby triggering the polling request at the next intersection.

[0071] For example, when executing the large polling path, if material is found at intersection B, and the small polling path (A→B→E) polls at intersection B, the material output path of intersection B is determined. If it is an output path that crosses the sorting line, the material is transported to intersection E, and only the current task is allowed to be executed to avoid conflicts between intersections A, B, and E. If the small polling path (D→C→E) has a task at this time, it waits and outputs the material when it is idle to avoid conflicts.

[0072] In summary, the advantages of this invention are:

[0073] By setting polling paths for sorting lines 1 and 2, each polling path includes a large polling path and two smaller polling paths. These large and small polling paths are not directly coupled, enabling comprehensive judgment of sorting actions at each intersection. When there is incoming material at an intersection (as per...),... Figure 5 Taking point B as an example, the system determines the process based on the material's discharge path. If it's a direct discharge, when the small polling path reaches the request at this intersection, direct discharge is performed; when the large polling path reaches the request at this intersection, a completion message is sent, ensuring both levels of polling can continue. However, if the discharge crosses the sorting line (e.g., ... Figure 5 If material is discharged from point B to port 2, then the material can only be discharged across the sorting line after both the large polling path and the small polling path have reached this port. During the discharge process, the polling action of the small polling path at this port is completed (e.g., ...). Figure 3 When material reaches point E, the small polling request at point B is completed, and the task of the small polling path (ABE) continues without waiting for the cross-sorting line action to complete. When the material reaches point E, it enters the control of another small polling path (DCE) and eventually reaches the discharge port 2. By controlling the material discharge at each port through a multi-level polling coupling control method, the correlation between small polling ports is reduced while ensuring that the opportunity for material discharge at each port is equal. This not only completely avoids the situation where a port is waiting indefinitely, but also improves the independence of the judgment of each execution port, achieving real-time material discharge at each port, and ultimately greatly improving the efficiency of material sorting.

[0074] While the foregoing describes specific embodiments of the application, one of ordinary skill in the art will further appreciate that the specific exemplary embodiments described are meant to be illustrative only and are not intended to limit the scope of the application. Changes, modifications, and equivalents which would occur to one skilled in the art upon a reading of the foregoing description are meant to be encompassed within the scope of the application.

Claims

1. A method of polled coupling control of material traffic, characterized by: The method comprises the following steps: Step S10, polling requests are sent to each intersection of the first sorting line and the second sorting line; the polling path of the polling request comprises one large polling path and two small polling paths; the large polling path is A→B→C→D; the small polling paths are A→B→E and D→C→E; the large polling path and the small polling paths are controlled through non-direct coupling; the small polling paths of the first sorting line and the second sorting line are in opposite directions, that is, one is clockwise and the other is counterclockwise; the first sorting line and the second sorting line are cross-shaped sorting lines and are connected to each other in the horizontal direction through one intersection of each sorting line; Step S20, the PLC performs comprehensive logical judgment based on the polling request, the received task path of the current intersection and the adjacent intersection, and obtains a feedback result of a task type; the task type is a cross-sorting line task, a straight-line task or no task; Step S30, the PLC performs outbound action judgment again based on the feedback result and the sensor arranged on the first sorting line and the second sorting line, and performs a corresponding action when a preset condition is met, and the task path is transmitted to the next intersection; the preset condition is specifically that the existence of materials at the intersection is detected through two-level polling paths; Step S40, the PLC monitors the conveying process until the task is completed and feedback is performed, and then triggers the polling request of the next intersection.

2. A method of polled coupling control of material traffic as defined in claim 1, characterized in that: The step S40 is specifically: The PLC monitors the path information of the material conveying process until the task is completed, and feeds back the execution result of the task completion, and then triggers the polling request of the next intersection.

3. A polled coupling control system for material traffic, characterized by: The method comprises the following modules: A polling request module is configured to send polling requests to each intersection of the first sorting line and the second sorting line; the polling path of the polling request comprises one large polling path and two small polling paths; the large polling path is A→B→C→D; the small polling paths are A→B→E and D→C→E; the large polling path and the small polling paths are controlled through non-direct coupling; the small polling paths of the first sorting line and the second sorting line are in opposite directions, that is, one is clockwise and the other is counterclockwise; the first sorting line and the second sorting line are cross-shaped sorting lines and are connected to each other in the horizontal direction through one intersection of each sorting line; A comprehensive logical judgment module is configured to perform comprehensive logical judgment by the PLC based on the polling request, the received task path of the current intersection and the adjacent intersection, and obtain a feedback result of a task type; the task type is a cross-sorting line task, a straight-line task or no task; An outbound action judgment module is configured to perform outbound action judgment again by the PLC based on the feedback result and the sensor arranged on the first sorting line and the second sorting line, and perform a corresponding action when a preset condition is met, and transmit the task path to the next intersection; the preset condition is specifically that the existence of materials at the intersection is detected through two-level polling paths; A conveying monitoring module is configured to monitor the conveying process by the PLC until the task is completed and feedback is performed, and then trigger the polling request of the next intersection.

4. A poll-coupled control system for material traffic as defined in claim 3, wherein: The conveying monitoring module is specifically: The PLC monitors the path information of the material conveying process until the task is completed, and feeds back the execution result of the task completion, thereby triggering the polling request of the next intersection.

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