CN113673796B - Goods arrival person picking station control method and system - Google Patents
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Abstract
The invention provides a method for controlling a goods-to-person picking station, which comprises the following steps: 1 or more tasks are received. The task ordering method specifically comprises the following steps: defining the received ith task as T i according to the sequence of the receiving time, and storing all the tasks into a to-be-distributed library; s100, judging whether the tasks Ti meet the distribution requirements one by one according to the sequence from T 1 to T n, if so, deleting the T i tasks from the to-be-distributed library, and entering a step S200; s120, if not, the task Ti continues to wait for distribution in the to-be-distributed library; when the task judgment of the T n is completed, repeating the step S100 until the task in the library to be distributed is cleared; s200, distributing the task T i to a display device and a storage place to finish the picking task Ti. The goods-to-person picking station system is provided with a plurality of picking stations, supports multi-person and multi-station simultaneous operation by combining a reasonable control method, can realize reasonable scheduling of various resources (display input devices, source boxes and target boxes), can also be changed in configuration, and can adapt to different application scenes.
Description
Technical Field
The invention relates to the technical field of warehouse logistics control, in particular to a control method and a system for a goods-to-person sorting station.
Background
In recent years, with the rapid development of technologies such as computers and sensors, the application of automated warehouse logistics technology also rapidly advances along with the pace of development, and is widely applied to the fields such as medicines, books, electronic commerce and the like.
The goods-to-person picking station is a workstation for realizing automatic transmission of goods to people and completing rapid picking operation manually according to instructions, and is an important ring of modern logistics distribution centers. At present, a goods-to-person picking station generally uses an integrated machine to process tasks and display information, generally only supports a single person or single-task picking mode, is fixed in configuration, has low overall efficiency, and cannot meet the requirement of quick picking operation under a large-order-quantity scene.
Disclosure of Invention
The invention aims to provide a control method and a system for a goods-to-person picking station, which are provided with a plurality of picking stations, and by combining a reasonable control method, the problems mentioned in the background art are solved, multi-person multi-station simultaneous operation is supported, reasonable scheduling of various resources (a display input device, a source box and an order target box) can be realized, the configuration can be changed, different application scenes can be adapted, and especially the requirement of rapid picking operation under a large order quantity scene can be met.
To achieve the above object, the present invention proposes a goods-to-person picking station system, the system comprising:
A plurality of source tank storage locations;
a plurality of target bin locations;
A plurality of display devices for prompting an operator to perform a picking operation;
a plurality of stations adapted for operator picking of items;
A control device electrically connected with the display device,
The method comprises the steps of receiving 1 or more picking tasks, defining a first task to be received as T1, defining a second task to be received as T2 according to the sequence of receiving time, defining an ith task to be received as T i, defining i=1, 2,3 … n and n as positive integers, storing all the tasks into a to-be-distributed library, and judging whether the tasks Ti in the to-be-distributed library conflict with resources of source box storage and target box storage of the tasks sequenced before the tasks Ti in the to-be-distributed library one by one according to the sequence from T1 to Tn;
If the resource records of the source box storage position and the target box storage position of the tasks before the tasks are sequenced in the to-be-distributed library, the tasks Ti continue to be distributed in the to-be-distributed library;
if the resource conflict between the source box storage position and the target box storage position of the task before the Ti in the library to be distributed is not generated, judging whether the Ti conflicts with the resources of the source box storage position, the target box storage position and the display device of the distributed task;
if the task conflicts with the source box storage position, the target box storage position and the resources of the display device of the distributed task, the task Ti continues to wait for distribution in the to-be-distributed library;
If the resource blocks of the source box storage position and the target box storage position of the tasks before Ti are not ordered in the library to be distributed, judging whether the empty stations exist or not;
if the available stations exist, deleting the Ti tasks from the to-be-distributed library, and distributing the tasks Ti to a display device, a source box storage position and a target box storage position;
after finishing the picking task Ti, feeding back a picking result to the control device through the input device;
When the Tn task judgment is completed, if the tasks are still to be distributed in the to-be-distributed library, repeating the judgment steps, namely judging whether the tasks Ti in the to-be-distributed library meet the distribution requirement one by one still according to the sequence from T1 to Tn, until all the tasks in the to-be-distributed library are cleared to complete task scheduling.
In a further embodiment, the number of control devices and the number of display devices are the same as the number of source tanks.
In a further embodiment, the control device comprises a master controller and at least one slave controller;
the main controller is used for receiving a task instruction dispatched by the upper computer, completing task scheduling and feeding back a task result to the upper computer;
the slave controller and the master controller can realize data synchronization and sharing;
the display device comprises a main control screen connected with the main controller and a plurality of secondary control screens; each secondary control screen is correspondingly connected with a slave controller.
In a further embodiment, each of the source bin storage location and the target bin storage location is provided with a verification device for verifying the picking result.
In a further embodiment, the display device is a touch screen, and the touch screen is further used for inputting information.
Compared with the prior art, the invention has the remarkable advantages that: the system has the advantages that a plurality of picking stations are arranged, the problems mentioned in the background art are solved by combining a reasonable control method, multi-person and multi-station simultaneous operation is supported, reasonable scheduling of various resources (display input devices, source boxes and target boxes) can be realized, the configuration can be changed, different application scenes can be adapted, and the requirement of rapid picking operation under a large order quantity scene can be met.
It should be understood that all combinations of the foregoing concepts, as well as additional concepts described in more detail below, may be considered a part of the inventive subject matter of the present disclosure as long as such concepts are not mutually inconsistent. In addition, all combinations of claimed subject matter are considered part of the disclosed inventive subject matter.
The foregoing and other aspects, embodiments, and features of the present teachings will be more fully understood from the following description, taken together with the accompanying drawings. Other additional aspects of the invention, such as features and/or advantages of the exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of the embodiments according to the teachings of the invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a flow chart of a method of controlling a cargo-to-person picking station system in accordance with a preferred embodiment of the present invention.
FIG. 2 is a schematic diagram of a cargo to person picking station system in accordance with a preferred embodiment of the present invention.
Detailed Description
For a better understanding of the technical content of the present invention, specific examples are set forth below, along with the accompanying drawings.
Aspects of the invention are described in this disclosure with reference to the drawings, in which are shown a number of illustrative embodiments. The embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, may be implemented in any of a number of ways, as the disclosed concepts and embodiments are not limited to any implementation. Additionally, some aspects of the disclosure may be used alone or in any suitable combination with other aspects of the disclosure.
As shown in fig. 1 and fig. 2, the method for controlling the goods-to-person picking station disclosed by the invention is suitable for the picking operation of the goods-to-person picking station. Briefly describing a picking station, as shown in fig. 2, the picking station includes a control device, a plurality of source box storage locations for placing source boxes, a plurality of target box storage locations for placing target boxes, a plurality of stations for picking objects by an operator, and a display device (such as a touch screen) for prompting the operator to perform a picking operation. In this embodiment, the picking station control system adopts a distributed master-slave structure to realize the control of the picking station, and the control device comprises a master controller 3 and at least one slave controller 5. The main controller 3, which may be an ARM controller, is a core module of the picking station control system, and is in communication with the upper computer 1, and is configured to receive a task instruction sent by the upper computer 1, complete task scheduling, and feed back a task result to the upper computer 1. The task instruction dispatched by the host computer 1 at least includes a target box number, a source box number and corresponding picking item information. The slave controller 5 and the master controller 3 can realize data synchronization and sharing. In this embodiment, the pictures of the items to be picked are shared among the controllers by adopting the NFS protocol, and the task data is transmitted by adopting the MQTT protocol. The display device comprises a main control screen 2 connected with a main controller 3 and a plurality of secondary control screens 4. Each secondary control screen 4 is correspondingly connected with a slave controller 5. Each controller and the corresponding control screen are used for displaying the picking tasks of the corresponding source box storage positions. The touch screen of the foregoing embodiment is not only capable of displaying picking information, but also has functions of collecting user input information (such as feeding back picking results) and providing data query. Each source box storage position and each target box storage position are respectively provided with a singlechip 6, 7, 8 and 9, an electronic tag, an electric roller and a verification device (such as a weighing module). The execution mechanisms 10, 11, 12 and 13 (electronic tags, electric rollers and verification devices) are directly controlled by the singlechips 6, 7, 8 and 9, and the main controller 3 communicates with each of the singlechips 6, 7, 8 and 9 through a CAN bus, so that the communication speed is high and the efficiency is high. The electronic tag is used for assisting in displaying picking information and/or confirming a picking completion result. The electric roller is responsible for transporting the source box or the target box, including transporting the source box from the transport line into the source box storage location of the picking station and transporting the target box from the picking target box storage location. And the verification device (such as a weighing module) is used for collecting the weight of the target box so as to realize the verification and verification of the correctness of the picking operation by the system. Of course, those skilled in the art may select other forms and configurations of the calibration device and the display device according to actual needs, such as the pressure calibration device, the image recognition calibration device, etc., and the calibration device and the display device according to the technical scheme disclosed in the present invention are not limited to the weighing module and the touch screen.
Based on the foregoing cargo to person picking station, as shown in fig. 1, the control method of the cargo to person picking station disclosed by the invention comprises the following steps:
And receiving 1 or more picking tasks issued by the upper computer 1. Picking tasks generally refer to an operator picking items from a source bin into a target bin according to prompts from a display device.
The task ordering method specifically comprises the following steps: according to the sequence of the receiving time, the first task is defined as T1, the second task is defined as T2, the ith task is defined as T i, i=1, 2,3 … n, and n is a positive integer. And stores all tasks (T1 to Tn) in the library to be distributed.
And judging whether the tasks Ti in the to-be-distributed library meet the distribution requirements one by one according to the sequence from T1 to Tn.
If so, deleting the Ti task from the library to be distributed, and distributing the task Ti to the display device, the source box storage position and the target box storage position. The display device (such as a touch screen), the electronic tag of the source box storage position and the electronic tag of the target box storage position prompt an operator to pick, and the operator finishes picking tasks Ti according to the prompt. After the operator finishes the picking task Ti, the picking result is fed back to the control device through a display device, an electronic tag or any other input device.
If not, the task Ti continues to wait for distribution in the library to be distributed.
When the Tn task judgment is completed, if the task to be distributed is still in the to-be-distributed library, repeating the judgment steps, namely judging whether the tasks Ti in the to-be-distributed library (at this time, the tasks in the to-be-distributed library comprise the tasks which are left in the to-be-distributed library for the last round and the new tasks which are received in real time for the new round) meet the distribution requirement one by one still according to the sequence from T1 to Tn until all the tasks in the to-be-distributed library are cleared.
In some preferred embodiments, as shown in fig. 1, the task execution sequence is substantially according to a rule that the task is received first and the task is picked first, and in order to avoid resource conflict, the foregoing determination of whether the task Ti meets the distribution requirement includes a first determination, a second determination, and a third determination.
The first judgment is specifically as follows: judging whether resource conflict exists between the task Ti and the task sequenced before the task Ti in the library to be distributed. The aforementioned resources include at least a source tank storage location and a target tank storage location.
If so, task Ti continues to wait for distribution within the library to be distributed. Thus, when the task Ti collides with the task (such as the source bin number or the target bin number is the same) sequenced before the task Ti in the to-be-distributed library, the task Ti does not execute the picking task.
If not, a second judgment is made.
The second judgment is specifically as follows: and judging whether the task Ti and the distributed task have resource conflict or not. The resources at least comprise a source box storage position, a target box storage position and a display device.
If so, task Ti continues to wait for distribution within the library to be distributed. Thus, when a resource conflict occurs between the task Ti and the distributed task (e.g., the source bin number or the target bin number is the same, or the display device number is the same), the task Ti does not execute the picking task.
If not, a third judgment is made.
The third judgment is specifically as follows: judging whether a free station exists. Whether a station is available or not can be judged by the control device based on feedback of the picking result, and details are not repeated here.
If so, deleting the Ti task from the library to be distributed, and distributing the task Ti to the display device, the source box storage position and the target box storage position. The display device (such as a touch screen), the electronic tag of the source box storage position and the electronic tag of the target box storage position prompt an operator to pick, and the operator finishes picking tasks Ti according to the prompt. After the operator finishes the picking task Ti, the picking result is fed back to the control device through a display device, an electronic tag or any other input device.
If not, the task Ti continues to wait for distribution in the library to be distributed.
According to an improvement of the present invention, a goods-to-person picking station system, the system comprising: the system comprises a control device, a plurality of source box storage positions for placing source boxes, a plurality of target box storage positions for placing target boxes, a plurality of stations suitable for operators to pick objects, and a display device (such as a touch screen) for prompting the operators to execute picking operation. The number of the control devices and the number of the display devices are the same as the number of the source box storage positions. The number of stations (operators) is less than or equal to the number of display devices, i.e. 1 operator is bound to one or more display devices.
In certain preferred embodiments, the picking station control system employs a distributed master-slave architecture to effect control of the picking stations, the control means comprising a master controller 3 and at least one slave controller 5. The main controller 3, which may be an ARM controller, is a core module of the picking station control system, and is in communication with the upper computer 1, and is configured to receive a task instruction sent by the upper computer 1, complete task scheduling, and feed back a task result to the upper computer 1. The task instruction dispatched by the host computer 1 at least includes a target box number, a source box number and corresponding picking item information. The slave controller 5 and the master controller 3 can realize data synchronization and sharing. In this embodiment, the pictures of the items to be picked are shared among the controllers by adopting the NFS protocol, and the task data is transmitted by adopting the MQTT protocol.
The display device comprises a main control screen 2 connected with a main controller 3 and a plurality of secondary control screens 4. Each secondary control screen 4 is correspondingly connected with a slave controller 5. Each controller and the corresponding control screen are used for displaying the picking tasks of the corresponding source box storage positions. The touch screen of the foregoing embodiment is not only capable of displaying picking information, but also has functions of collecting user input information (such as feeding back picking results) and providing data query. Each source box storage position and each target box storage position are respectively provided with a singlechip 6, 7, 8 and 9, an electronic tag, an electric roller and a verification device (such as a weighing module). The electronic tag, the electric roller and the checking device are directly controlled by the singlechips 6, 7, 8 and 9, and the main controller 3 communicates with each of the singlechips 6, 7, 8 and 9 through a CAN bus. The electronic tag is used for assisting in displaying picking information and/or confirming a picking completion result. The electric roller is responsible for transporting the source box or the target box, including transporting the source box from the transport line into the source box storage location of the picking station and transporting the target box from the picking target box storage location. And the verification device (such as a weighing module) is used for collecting the weight of the target box so as to realize the verification and verification of the correctness of the picking operation by the system. Of course, those skilled in the art may also select other forms and configurations of the verification device and the display device, such as the pressure verification device, the image recognition verification device, etc., according to actual needs. And will not be described in detail herein.
For clarity of illustration, the principle of operation of the goods-to-person picking station system will now be described by way of example with reference to figures 1 and 2,
Taking a sorting station with 2-to-2 (2 source box storage positions and 2 target box positions) single-layer storage position layout as an example, as shown in fig. 2, a main controller 3, a main control screen 2, a secondary controller 5 and a secondary control screen 4 are respectively arranged on the two source box storage positions 2 and 3, and the main controller 3 is mutually communicated with an upper computer 1 and the secondary controller 5 through Ethernet. Each storage position is provided with an executing mechanism 10, 11, 12, 13 and a sensor, and the executing mechanism comprises a roller, an electronic tag and a weighing module, wherein the devices 10, 11, 12 and 13 are directly controlled by the single chip computers 6, 7, 8 and 9, and the main controller 3 is communicated with each single chip computer 6, 7, 8 and 9 through a CAN bus.
Taking picking as an example, as shown in fig. 1, the control method of the invention is as follows:
(1) The main controller 3 circularly receives picking tasks issued by the upper computer 1.
(2) The main controller 3 sorts the tasks, specifically: according to the sequence of the receiving time, the first task is defined as T1, the second task is defined as T2, the ith task is defined as T i, i=1, 2,3 … n, and n is a positive integer. And stores all tasks (T1 to T n) in the library to be distributed.
(3) And judging whether the tasks Ti in the to-be-distributed library meet the distribution requirements one by one according to the sequence from T1 to Tn.
If the task Ti is deleted from the to-be-distributed library, distributing the task Ti to a display device, a source box storage position and a target box storage position, prompting an operator to select the task Ti according to prompt, and prompting the operator to complete the selection of the task Ti by the display device (such as a touch screen), an electronic tag of the source box storage position and an electronic tag of the target box storage position.
If not, the task Ti continues to wait for distribution in the library to be distributed.
When the Tn task judgment is completed, if the task to be distributed is still in the to-be-distributed library, repeating the judgment steps, namely judging whether the tasks Ti in the to-be-distributed library (at this time, the tasks in the to-be-distributed library comprise the tasks which are left in the to-be-distributed library for the last round and the new tasks which are received in real time for the new round) meet the distribution requirement one by one still according to the sequence from T1 to Tn until all the tasks in the to-be-distributed library are cleared.
(4) After finishing the picking operation according to the indication of the electronic tag and the touch screen, the operator touches the electronic tag to inform the system that the picking operation is finished, the main controller 3 reports the data collected by the weighing module to the upper computer 1, the upper computer 1 carries out weighing checking, namely, the theoretical value and the measured value of the weight change of the storage position before and after the picking operation are compared, the checking is passed when the difference value is within the error range, the task is finished, and the user selects whether to re-pick or not when the checking is not passed. And after the task is completed, the corresponding storage (source storage and target storage) and display device (touch screen) resources are released.
Therefore, under the condition that resources are not conflicted, picking tasks of different source tank storage positions can be simultaneously executed by a plurality of operators, and the tasks are not mutually interfered.
In summary, by the control method and the goods-to-person picking station system disclosed by the invention; the system has the advantages that a plurality of picking stations are arranged, the problems mentioned in the background art are solved by combining a reasonable control method, multi-person and multi-station simultaneous operation is supported, reasonable scheduling of various resources (display input devices, source boxes and order target boxes) can be realized, the configuration can be changed, different application scenes can be adapted, and the requirement of rapid picking operation under a large order quantity scene can be met.
While the invention has been described with reference to preferred embodiments, it is not intended to be limiting. Those skilled in the art will appreciate that various modifications and adaptations can be made without departing from the spirit and scope of the present invention. Accordingly, the scope of the invention is defined by the appended claims.
Claims (5)
1. A goods-to-person picking station system, the system comprising:
A plurality of source tank storage locations;
a plurality of target bin locations;
A plurality of display devices for prompting an operator to perform a picking operation;
a plurality of stations adapted for operator picking of items;
The control device is electrically connected with the display device, the source box storage position and the target box storage position respectively and is used for receiving 1 or more picking tasks, defining a first received task as T1, defining a second received task as T2 according to the sequence of receiving time, defining an ith received task as T i, i=1, 2,3 … n and n as positive integers, storing all the tasks into the to-be-distributed library, and judging whether the tasks Ti in the to-be-distributed library collide with the resources of the source box storage position and the target box storage position of the tasks sequenced before the Ti in the to-be-distributed library one by one according to the sequence from T1 to Tn;
If the task conflict with the resources of the source box storage position and the target box storage position of the tasks sequenced before Ti in the to-be-distributed library, the task Ti continues to wait for distribution in the to-be-distributed library;
If the resource conflict between the source box storage position and the target box storage position of the task before the Ti in the library to be distributed does not exist, judging whether the Ti conflicts with the resource of the source box storage position, the target box storage position and the display device of the distributed task;
if the task conflicts with the source box storage position, the target box storage position and the resources of the display device of the distributed task, the task Ti continues to wait for distribution in the to-be-distributed library;
if the task does not conflict with the source box storage position, the target box storage position and the resources of the display device of the distributed task, judging whether a free station exists or not;
if the available stations exist, deleting the Ti tasks from the to-be-distributed library, and distributing the tasks Ti to a display device, a source box storage position and a target box storage position;
after finishing the picking task Ti, feeding back a picking result to the control device through the input device;
When the Tn task judgment is completed, if the tasks are still to be distributed in the to-be-distributed library, repeating the judgment steps, namely judging whether the tasks Ti in the to-be-distributed library meet the distribution requirement one by one still according to the sequence from T1 to Tn, until all the tasks in the to-be-distributed library are cleared to complete task scheduling.
2. The system of claim 1, wherein the number of control devices, the number of display devices, and the number of source bins are the same.
3. The goods-to-person picking station system of claim 2 wherein,
The control device comprises a master controller and at least one slave controller;
the main controller is used for receiving a task instruction dispatched by the upper computer, completing task scheduling and feeding back a task result to the upper computer;
the slave controller and the master controller can realize data synchronization and sharing;
the display device comprises a main control screen connected with the main controller and a plurality of secondary control screens; each secondary control screen is correspondingly connected with a slave controller.
4. The goods-to-person picking station system of claim 2 wherein,
Each source box storage position and each target box storage position are provided with a verification device, and the verification devices are used for verifying the picking results.
5. The goods-to-person picking station system of claim 2 wherein,
The display device is a touch screen, and the touch screen is also used for inputting information.
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