Method, system, control device and computer-readable storage medium for handling package retention in a pendulum sorting system

Abstract

The present invention discloses a method, system, control device and computer-readable storage medium for handling package detention in a balance wheel sorting system, wherein the method uses a verification photoelectric sensor in front of a balance wheel sorting machine in a balance wheel conveying and sorting system to re-measure and verify the length of each package, and compare it with the previous measurement data, and combine the tracking data and sorting results of other packages before the current tracking package to comprehensively analyze and determine whether the current package has become a multi-package accumulation state during the conveying and sorting process, so as to perform special reflux processing to ensure the accuracy of cargo sorting, and at the same time, to a certain extent, statistics and warnings will be made on the abnormal operation status of the equipment. Since the situation of misclassification is avoided and the time consumption of abnormal processing after misclassification is avoided, it is conducive to improving the efficiency of on-site operations and effectively reducing the cost of manual abnormal processing. At the same time, the operation status of the equipment is also more fully monitored.

Description

Technical Field

[0001] The present invention relates to the field of logistics equipment, and in particular to a package detention processing method, system, control device and computer-readable storage medium of a pendulum wheel sorting system. Background Art

[0002] The swing wheel sorting system includes a plurality of swing wheel sorters alternately arranged and connected with a belt conveyor. The packages are sorted to different routes by the left and right swinging of the conveying wheel of each swing wheel sorter.

[0003] Since the packaging forms and categories of the parcels to be sorted are various, during the transportation process, there will be problems such as stuck packages on the swing wheel sorter, bags hanging on the baffle of the belt conveyor, and sorting failure during the sorting process causing the parcels to remain in the unpowered area of ​​the swing wheel sorter, resulting in problems such as parcel detention and tracking loss. Therefore, the subsequent normally transported parcels will collide with the stranded parcels and be piled together with the stranded parcels for transportation and sorting at the same time. Based on the PLC tracking logic, it will be considered that the multiple parcels piled together are sorted as one parcel, resulting in missorting, which greatly affects the reliability of sorting and increases the cost of exception handling. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems existing in the prior art and to provide a method and system for handling parcel detention in a pendulum wheel sorting system.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A method for handling parcel detention in a balance wheel sorting system, wherein a recheck photoelectric sensor is arranged in front of each balance wheel sorting machine of the balance wheel sorting system. During the sorting process of the system, when each parcel passes through each recheck photoelectric sensor, the following steps are performed:

[0007] S10, receiving a signal when the Nth package passes through the Mth photoelectric sensor for verification, and executing S20;

[0008] S20, determining the length information of the current package according to the current signal, and comparing the length information with the length information of the current package measured at the previous recheck photoelectric sensor or tracking photoelectric sensor or scanning photoelectric sensor before the current recheck photoelectric sensor, and when it is confirmed that the length difference exceeds the threshold, executing S30; when it is determined that the length difference does not exceed the threshold, executing S80;

[0009] S30, determining whether a parcel before the current parcel is sorted at its corresponding swing wheel sorting machine, when the determination is no, execute S40; when the determination is yes, execute S50;

[0010] S40, determine whether other packages before the current package are lost. If not, confirm that the current photoelectric sensor is measuring abnormally and record the abnormality; if so, determine that there are multiple packages stacked, clear the tracking data of the current package, and control the balance wheel sorting system to return multiple packages;

[0011] S50, determine whether the previous package was sorted successfully. If so, confirm that the current photoelectric sensor is abnormal, record the abnormal measurement and execute S60; if not, determine that there are multiple packages, clear the tracking data of the current package, and control the balance wheel sorting system to return multiple packages;

[0012] S60, analyzing whether the abnormal measurements occur continuously or in large quantities, if so, executing S70; if not, executing S80;

[0013] S70, controlling the alarm to give an alarm warning;

[0014] S80, confirm whether a balance wheel sorter behind the current review photoelectric sensor is the balance wheel sorter corresponding to the current package route, if so, execute S90; if not, execute S100;

[0015] S90, when the current package moves to the balance wheel sorting machine, the balance wheel sorting machine is started for sorting;

[0016] S100, continue tracking the current package, and when receiving a signal that the current package passes through the next verification photoelectric sensor, execute S20.

[0017] Preferably, in the parcel detention processing method of the balance wheel sorting system, the routing information of the parcel is obtained by a six-sided code reading mechanism.

[0018] Preferably, in the parcel detention processing method of the balance wheel sorting system, the parcels are output one by one by the single-piece separation device and then obtain the route through the code reading mechanism.

[0019] Preferably, in the parcel detention processing method of the swing wheel sorting system, after the parcels are output one by one by the single-piece separation device, they are centered by the center conveyor or moved to the side by the side conveyor, and then pass through the code reading mechanism.

[0020] Preferably, in the parcel detention processing method of the pendulum wheel sorting system, after the parcels are output one by one by the single-piece separation device, they pass through the tracking photoelectric sensor and then pass through the code reading mechanism. The PLC starts tracking the parcel position and determines to record the length information of the Nth parcel of the current parcel when the parcel passes through the tracking photoelectric sensor.

[0021] The parcel detention handling system of the swing wheel sorting system includes

[0022] A signal acquisition unit, used to receive the signal when the Nth package passes through the Mth photoelectric sensor and send it to the analysis and comparison unit;

[0023] An analysis and comparison unit is used to determine the length information of the current package according to the current signal, and compare the length information with the length information of the current package measured at a previous recheck photoelectric sensor, tracking photoelectric sensor or scanning photoelectric sensor before the current recheck photoelectric sensor, and send a signal to the first judgment unit when it is determined that the length difference exceeds the threshold; and send a signal to the second judgment unit when it is determined that the length difference does not exceed the threshold;

[0024] The first judgment unit is used to determine whether a parcel before the current parcel is sorted at its corresponding swing wheel sorting machine, and when it is determined to be no, a signal is sent to the third judgment unit; when it is determined to be yes, a signal is sent to the fourth judgment unit;

[0025] The third judgment unit is used to judge whether other packages before the current package are lost. If not, confirm that the current photoelectric sensor measures abnormally and record the abnormality; if so, it is determined to be a multi-package stack, clear the tracking data of the current package, and control the pendulum sorting system to return multiple packages;

[0026] The fourth judgment unit is used to judge whether the previous package was sorted successfully. If so, it confirms that the current photoelectric sensor is abnormal, records the abnormal measurement situation and sends a signal to the analysis unit; if not, it is determined to be a multi-package stack, clears the tracking data of the current package, and controls the balance wheel sorting system to return multiple packages;

[0027] An analysis unit is used to analyze whether the abnormal measurements occur continuously or in large quantities. If so, the alarm unit is executed; if not, a signal is sent to the second judgment unit;

[0028] An alarm unit is used to control the alarm to warn;

[0029] The second judgment unit is used to confirm whether a balance wheel sorter behind the current verification photoelectric sensor is a balance wheel sorter corresponding to the route of the current package. If so, a signal is sent to the sorting unit; if not, a signal is sent to the repeat unit;

[0030] A sorting unit, used for starting the swing wheel sorting machine for sorting when the current package moves to the swing wheel sorting machine;

[0031] The repeating unit is used to continue tracking the current package and send a signal to the analysis and comparison unit when receiving the signal that the current package passes through the next verification photoelectric sensor.

[0032] The control device of the balance wheel sorting system includes

[0033] A memory for storing executable instructions;

[0034] Processor; the processor is configured to execute the steps of any of the above-mentioned methods for handling package detention in the swing wheel sorting system by executing the executable instructions.

[0035] A computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of any of the above-mentioned methods for handling parcel detention in a swing wheel sorting system are implemented.

[0036] The advantages of the technical solution of the present invention are mainly reflected in:

[0037] In the pendulum conveying and sorting system, this solution uses a photoelectric sensor in front of the pendulum sorting machine to re-measure and re-check the length of each package, and compare it with the measurement data of the previous photoelectric sensor. Combined with the tracking data and sorting results of other packages before the current tracking package, a comprehensive analysis is performed to determine whether the current package has become a multi-package pile-up state during the conveying and sorting process, so as to perform special reflux processing to ensure the accuracy of cargo sorting. At the same time, it will also collect statistics and warn about the abnormal operation status of the equipment to a certain extent. Since the misclassification is avoided and the time consumption of abnormal processing after misclassification is avoided, it is conducive to improving on-site operation efficiency and effectively reducing the cost of manual abnormal processing. At the same time, the operation status of the equipment is also more fully monitored.

[0038] This solution obtains the route through the six-sided code scanning structure, which can effectively simplify the requirements for loading packages, thereby facilitating the automation of the entire sorting process. Combined with the centering device, the items can be effectively output in the middle position to reduce the difficulty of sorting calculations of the subsequent swing wheel sorter. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a schematic diagram of the balance wheel sorting system of the present invention;

[0040] Figure 2 It is a schematic flow diagram of the method of the present invention;

[0041] Figure 3 It is a complete flow chart of the operation of the balance wheel sorting system of the present invention. DETAILED DESCRIPTION

[0042] The purpose, advantages and features of the present invention will be illustrated and explained by the non-limiting description of the following preferred embodiments. These embodiments are only typical examples of the application of the technical solution of the present invention, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection claimed by the present invention.

[0043] In the description of the scheme, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Moreover, in the description of the scheme, with the operator as a reference, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0044] The balance wheel sorting system disclosed by the present invention is described below in conjunction with the accompanying drawings. Figure 1 As shown, it includes a plurality of alternately arranged swing wheel sorters 10 and conveyors 20. The swing wheel sorter 10 can be various known structures, and the conveyor 20 can be a known belt conveyor or roller conveyor, which will not be described here. They constitute the sorting part.

[0045] As attached Figure 1 As shown, a code reading conveying device 30 is connected to the input end of the first conveyor 20, and the code reading conveying device 30 includes at least two sections of belt conveyors, a code reading mechanism, and a scanning photoelectric sensor that triggers the code reading mechanism to read the code (not shown in the figure, of course, the scanning photoelectric sensor is not necessary and can be omitted). The code reading mechanism is a six-sided code reading mechanism, and the code reading conveying device 30 using a six-sided code reading mechanism is a known technology and is not described in detail here. Of course, in other embodiments, if the items are conveyed to the code reading mechanism with the QR code or barcode facing upward or facing the side, the code reading mechanism can be a structure that can realize top surface code reading and / or side surface code reading. The code reading conveying device can also be a known DWS conveying device, which is not described in detail here.

[0046] The input end of the code reading and conveying device 30 is connected to a visual single-piece separation device, which is used to separate the batch items laid thereon from each other longitudinally and convey them one by one to the outside of the visual single-piece separation device. The visual single-piece separation device includes a separation conveyor 40, a transverse pull-distance conveyor connected to the front end of the separation conveyor 40, an image acquisition module (not shown in the figure) for acquiring the top image of the separation conveyor 40, and an AI module (not shown in the figure) for communicating with the image acquisition module. The entity physical structure of the visual single-piece separation device is a known technology and will not be described in detail here.

[0047] As attached Figure 1As shown, a side conveyor or a center conveyor 70 is provided between the output end of the visual single-piece separation device and the code reading conveyor 30, so that the items output by the visual single-piece separation device can be close to the same position, thereby facilitating the control of subsequent sorting actions. A tracking photoelectric sensor 50 is provided between the center conveyor and the code reading mechanism, and the tracking photoelectric sensor 50 can be used to trigger the code reading mechanism and trigger the tracking of the items.

[0048] In order to effectively determine the actual stall condition of the article after passing through each of the swing wheel sorters 10, a recheck photoelectric sensor 60 is arranged in front of each swing wheel sorter 10. Each of the recheck photoelectric sensors 60 is specifically arranged in the middle and slightly behind the conveyor 20 between two adjacent swing wheel sorters 10.

[0049] In order to facilitate the subsequent return of the items, the last conveyor 20 or the last swing wheel sorter can be connected to a return line, and the return line can convey the items to a manual processing area for manual processing.

[0050] The following will focus on the parcel detention processing method of the above-mentioned balance wheel sorting system, as shown in the attached Figure 2 As shown, after the PLC obtains the route of the package, the subsequent tracking and sorting of each package includes the following steps:

[0051] S10, receiving a signal when the Nth package passes through the Mth photoelectric sensor for verification, and executing S20;

[0052] S20, determining the length information of the current package according to the current signal, and comparing the length information with the length information of the current package measured at the previous recheck photoelectric sensor or tracking photoelectric sensor or scanning photoelectric sensor before the current recheck photoelectric sensor, and when it is confirmed that the length difference exceeds the threshold, executing S30; when it is determined that the length difference does not exceed the threshold, executing S80;

[0053] S30, determining whether a parcel before the current parcel is sorted at its corresponding swing wheel sorting machine, when the determination is no, execute S40; when the determination is yes, execute S50;

[0054] S40, determine whether other packages before the current package are lost. If not, confirm that the current photoelectric sensor is measuring abnormally and record the abnormality; if so, determine that there are multiple packages stacked, clear the tracking data of the current package, and control the balance wheel sorting system to return multiple packages;

[0055] S50, determine whether the previous package was sorted successfully. If so, confirm that the current photoelectric sensor is abnormal, record the abnormal measurement and execute S60; if not, determine that there are multiple packages, clear the tracking data of the current package, and control the balance wheel sorting system to return multiple packages;

[0056] S60, analyzing whether the abnormal measurements occur continuously or in large quantities, if so, executing S70; if not, executing S80;

[0057] S70, controlling the alarm to give an alarm warning;

[0058] S80, confirm whether a balance wheel sorter behind the current review photoelectric sensor is the balance wheel sorter corresponding to the current package route, if so, execute S90; if not, execute S100;

[0059] S90, when the current package moves to the balance wheel sorting machine, the balance wheel sorting machine is started for sorting;

[0060] S100, continue tracking the current package, and when receiving a signal that the current package passes through the next verification photoelectric sensor, execute S20.

[0061] For example, the recheck photoelectric sensors are numbered 1, 2, 3, 4 ... N in the order in which the packages pass through the recheck photoelectric sensors; when a package a passes through the second recheck photoelectric sensor, the length data L1 of the package a is determined and compared with the length data L2 measured when the package a passes through the first recheck photoelectric sensor. When the difference between L1 and L2 is greater than the threshold, there may be a problem that when package a moves from the first recheck photoelectric sensor to the second recheck photoelectric sensor, it collides with the previously stranded package and then piles up and moves synchronously, thereby causing the length data measured at the second recheck photoelectric sensor to increase; then, it is determined whether a package b before package a is sorted at the pendulum wheel sorter corresponding to its route.

[0062] If the pendulum wheel sorter corresponding to the previous package b has not sorted it, determine whether other packages c before package a have been lost due to tracking. If it is determined that there is a lost package c, determine that package a and the lost package c are multiple packages. At this time, clear the sorting and tracking data of package a, and the pendulum wheel sorting system will return package a and the lost package c; if there is no lost package c, determine that the measurement of the second verification photoelectric sensor is abnormal and record the abnormality.

[0063] If the previous package b is sorted by the pendulum sorter, it is further determined whether package b is sorted successfully (a sensor is set at the grid or chute to determine whether the package enters it. The package triggers the sensor at the grid or chute, indicating that the sorting is successful, otherwise it fails). If package b is sorted successfully, the second verification photoelectric sensor is considered to have measured abnormally and recorded. If package b fails to be sorted, it is determined that package b is stranded, and packages a and b are stacked. At this time, the sorting tracking data of package a is cleared, and the pendulum sorting system returns packages a and b.

[0064] When it is determined that the measurement of the second recheck photoelectric sensor is abnormal, continue to determine whether the measurement abnormality occurs continuously or in large quantities. If it occurs continuously or in large quantities, an alarm is triggered for manual processing. At this time, it may be that the speed of the belt conveyor is abnormal or the photoelectric sensor is interfered by foreign objects. If it does not occur continuously or in large quantities, determine whether the second balance wheel sorter behind the second recheck photoelectric sensor is the balance wheel sorter corresponding to the route of package a; if so, start the second balance wheel sorter to sort package a; if not, continue to track package a, and when package a moves to the third recheck photoelectric sensor, measure the length of the package again and compare it with the data at the second recheck photoelectric sensor, and repeat the above judgment process according to the comparison situation until package a returns or is sorted at the balance wheel sorter corresponding to its route.

[0065] As attached Figure 3 As shown, the routing information of each package is obtained through the six-sided code reading mechanism. When the package passes through the six-sided code reading mechanism, the six-sided code reading mechanism obtains the barcode to the WCS. After the WCS obtains the routing information, it returns it to the PLC. The PLC binds the routing information and tracking information and obtains the theoretical data (theoretical number of pulses or theoretical time) of the package passing through the verification photoelectric sensor. And the packages are output one by one by the single-piece separation device, centered by the centering conveyor or side by the side conveyor, and then pass through the code reading mechanism. Of course, centering or side by side of the package is not necessary and can be omitted.

[0066] As attached Figure 3 As shown, after the packages are output one by one by the single-piece separation device, they are first conveyed through the tracking photoelectric sensor 50 and then through the code reading mechanism. The PLC starts tracking the location of the package when the package passes through the tracking photoelectric sensor, and determines and records the length information of the package.

[0067] A large number of flat packages are supplied to the single piece separation device manually or by a package supply conveyor, and the single piece separation device is preferably a visual single piece separation device.

[0068] Of course, in another embodiment, the package can also be placed directly on the first conveyor 20 after manual code scanning. In this case, the single-piece separation and code reading mechanism are not required, and the package can be tracked when the package passes the first verification photoelectric sensor. Alternatively, a package conveyor line is set in front of the first conveyor 20, and a tracking photoelectric sensor is set at the package conveyor line. When the package passes the tracking photoelectric sensor, the PLC starts tracking.

[0069] Example 2

[0070] This embodiment discloses a parcel detention processing system of a swing wheel sorting system, comprising:

[0071] A signal acquisition unit, used to receive the signal when the Nth package passes through the Mth photoelectric sensor and send it to the analysis and comparison unit;

[0072] An analysis and comparison unit is used to determine the length information of the current package according to the current signal, and compare the length information with the length information of the current package measured at a previous recheck photoelectric sensor, tracking photoelectric sensor or scanning photoelectric sensor before the current recheck photoelectric sensor, and send a signal to the first judgment unit when it is determined that the length difference exceeds the threshold; and send a signal to the second judgment unit when it is determined that the length difference does not exceed the threshold;

[0073] The first judgment unit is used to determine whether a parcel before the current parcel is sorted at its corresponding swing wheel sorting machine, and when it is determined to be no, a signal is sent to the third judgment unit; when it is determined to be yes, a signal is sent to the fourth judgment unit;

[0074] The third judgment unit is used to judge whether other packages before the current package are lost. If not, confirm that the current photoelectric sensor measures abnormally and record the abnormality; if so, it is determined to be a multi-package stack, clear the tracking data of the current package, and control the pendulum sorting system to return multiple packages;

[0075] The fourth judgment unit is used to judge whether the previous package was sorted successfully. If so, it confirms that the current photoelectric sensor is abnormal, records the abnormal measurement situation and sends a signal to the analysis unit; if not, it is determined to be a multi-package stack, clears the tracking data of the current package, and controls the balance wheel sorting system to return multiple packages;

[0076] An analysis unit is used to analyze whether the abnormal measurements occur continuously or in large quantities. If so, the alarm unit is executed; if not, a signal is sent to the second judgment unit;

[0077] An alarm unit is used to control the alarm alarm;

[0078] The second judgment unit is used to confirm whether a balance wheel sorter behind the current verification photoelectric sensor is a balance wheel sorter corresponding to the route of the current package. If so, a signal is sent to the sorting unit; if not, a signal is sent to the repeat unit;

[0079] A sorting unit, used for starting the swing wheel sorting machine for sorting when the current package moves to the swing wheel sorting machine;

[0080] The repeating unit is used to continue tracking the current package and send a signal to the analysis and comparison unit when receiving the signal that the current package passes through the next verification photoelectric sensor.

[0081] Example 3

[0082] This embodiment discloses a control device for a balance wheel sorting system, comprising:

[0083] A memory for storing executable instructions;

[0084] Processor; the processor is configured to execute the steps of the package detention processing method of the swing wheel sorting system of Example 1 by executing the executable instructions.

[0085] Example 4

[0086] This embodiment discloses a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the method for handling parcel detention in the swing wheel sorting system of embodiment 1 are implemented.

[0087] There are many implementation methods of the present invention, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A method for handling parcel detention in a balancing wheel sorting system, characterized in that: A recheck photoelectric sensor is arranged in front of each recheck photoelectric sensor of the recheck wheel sorting system. When each package passes through each recheck photoelectric sensor, the following steps are performed: S10, receiving a signal when the Nth package passes through the Mth photoelectric sensor for verification, and executing S20; S20, determining the length information of the current package according to the current signal, and comparing the length information with the length information of the current package measured at the previous recheck photoelectric sensor or tracking photoelectric sensor or scanning photoelectric sensor before the current recheck photoelectric sensor, and when it is confirmed that the length difference exceeds the threshold, executing S30; when it is determined that the length difference does not exceed the threshold, executing S80; S30, determining whether a parcel before the current parcel is sorted at its corresponding swing wheel sorting machine, when the determination is no, execute S40; when the determination is yes, execute S50; S40, determine whether other packages before the current package are lost. If not, confirm that the current photoelectric sensor is measuring abnormally and record the abnormality; if so, determine that there are multiple packages stacked, clear the tracking data of the current package, and control the balance wheel sorting system to return multiple packages; S50, determine whether the previous package was sorted successfully. If so, confirm that the current photoelectric sensor is abnormal, record the abnormal measurement and execute S60; if not, determine that there are multiple packages, clear the tracking data of the current package, and control the balance wheel sorting system to return multiple packages; S60, analyzing whether the abnormal measurements occur continuously or in large quantities, if so, executing S70; if not, executing S80; S70, controlling the alarm to give an alarm warning; S80, confirm whether a balance wheel sorter behind the current review photoelectric sensor is the balance wheel sorter corresponding to the current package route, if so, execute S90; if not, execute S100; S90, when the current package moves to the balance wheel sorting machine, the balance wheel sorting machine is started for sorting; S100, continue tracking the current package, and when receiving a signal that the current package passes through the next verification photoelectric sensor, execute S20.

2. The method for handling parcel detention in a balance wheel sorting system according to claim 1, characterized in that: The routing information of the package is obtained through a six-sided code reading mechanism.

3. The method for handling parcel detention in a balance wheel sorting system according to claim 1, characterized in that: After the packages are output one by one by the single-piece separation device, they pass through the barcode reading mechanism to obtain the route.

4. The method for handling parcel detention in a balance wheel sorting system according to claim 3, characterized in that: After the packages are output one by one by the single-piece separation device, they are centered by the center conveyor or side by the side conveyor, and then pass through the code reading mechanism.

5. The method for handling parcel detention in a balance wheel sorting system according to claim 3, characterized in that: After the packages are output one by one from the single-piece separation device, they pass through the tracking photoelectric sensor and then the code reading mechanism. The PLC starts tracking the location of the package when the package passes the tracking photoelectric sensor, and determines and records the length information of the package.

6. A parcel detention processing system of a balance wheel sorting system, used to implement the parcel detention processing method of the balance wheel sorting system according to any one of claims 1 to 5, comprising: A signal acquisition unit, used to receive the signal when the Nth package passes through the Mth photoelectric sensor and send it to the analysis and comparison unit; An analysis and comparison unit is used to determine the length information of the current package according to the current signal, and compare the length information with the length information of the current package measured at a previous recheck photoelectric sensor, tracking photoelectric sensor or scanning photoelectric sensor before the current recheck photoelectric sensor, and send a signal to the first judgment unit when it is determined that the length difference exceeds the threshold; and send a signal to the second judgment unit when it is determined that the length difference does not exceed the threshold; The first judgment unit is used to determine whether a parcel before the current parcel is sorted at its corresponding swing wheel sorting machine, and when it is determined to be no, a signal is sent to the third judgment unit; when it is determined to be yes, a signal is sent to the fourth judgment unit; The third judgment unit is used to judge whether other packages before the current package are lost. If not, confirm that the current photoelectric sensor measures abnormally and record the abnormality; if so, it is determined to be a multi-package stack, clear the tracking data of the current package, and control the pendulum sorting system to return multiple packages; The fourth judgment unit is used to judge whether the previous package was sorted successfully. If so, it confirms that the current photoelectric sensor is abnormal, records the abnormal measurement situation and sends a signal to the analysis unit; if not, it is determined to be a multi-package stack, clears the tracking data of the current package, and controls the balance wheel sorting system to return multiple packages; An analysis unit is used to analyze whether the abnormal measurements occur continuously or in large quantities. If so, the alarm unit is executed; if not, a signal is sent to the second judgment unit; An alarm unit is used to control the alarm to warn; The second judgment unit is used to confirm whether a balance wheel sorter behind the current verification photoelectric sensor is a balance wheel sorter corresponding to the route of the current package. If so, a signal is sent to the sorting unit; if not, a signal is sent to the repeat unit; A sorting unit, used for starting the swing wheel sorting machine for sorting when the current package moves to the swing wheel sorting machine; The repeating unit is used to continue tracking the current package and send a signal to the analysis and comparison unit when receiving the signal that the current package passes through the next verification photoelectric sensor.

7. The control device of the balance wheel sorting system is characterized in that: include: A memory for storing executable instructions; processor; The processor is configured to execute the steps of the package detention processing method of the swing wheel sorting system according to any one of claims 1 to 5 by executing the executable instructions.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the parcel detention processing method of the swing wheel sorting system according to any one of claims 1 to 5 are implemented.

Images