JP2020042008A - Wrong shipment preventing device, wrong shipment preventing system, wrong shipment preventing method, and wrong shipment preventing program - Google Patents

Abstract

To increase the efficiency of weight check work by prompting a worker to do correct picking and to reliably prevent wrong shipment.SOLUTION: A weight calculation unit acquires the weight of a container in which components before picking of target components are accommodated as a first total weight and acquires the weight of the container after picking as a second total weight. The weight calculation unit calculates a difference between the first total weight and the second total weight as a picking weight. A determination unit determines whether or not a weight difference between the picking weight and the total weight of target components included in the picking list is within a permissible range. When it is determined that the weight difference is not in the permissible range, a warning display unit acquires a unit weight of the target components from component master information and displays, on a display screen, a presumed shortage or excess of target components on the basis of the weight difference and the unit weight as a warning display 141.SELECTED DRAWING: Figure 12

Description

  The present invention relates to an erroneous shipment prevention system, an erroneous shipment prevention device, an erroneous shipment prevention method, and an erroneous shipment prevention program.

When a plurality of components are mixed and delivered in an automatic warehouse, the parts may be stored in the mixed loaded form in order to increase the storage efficiency of the warehouse. Even when the container is automatically picked up to the point where the container is taken out, if an individual picking is performed by an operator, there is a possibility that the wrong part is picked for the following reasons. In addition, erroneous shipment due to such a picking error occurs.
・ It is difficult to identify multiple parts in a container.
-Even if you attach a photo, the wrong part is selected because the packaging is different or the sense of size is difficult to grasp.
-It is difficult for workers to notice at the work stage even if they make the wrong parts or the number of parts.

  Patent Literature 1 discloses a technique for judging excess or deficiency of articles based on an error weight between a total weight of all articles actually mixed and a planned total weight of all articles to be mixed.

JP 2004-279240 A

  In Patent Literature 1, since the total weight of the articles to be mixed is compared, there is a problem that individual articles having excess or deficiency cannot be correctly determined.

  SUMMARY OF THE INVENTION An object of the present invention is to prompt a worker for correct picking, thereby making the weight checking work more efficient and reliably preventing erroneous shipment.

The device for preventing erroneous shipment according to the present invention,
Obtain the weight of the container storing the parts before the target component to be picked is picked as the first overall weight, and obtain the weight of the container after the target parts are picked as the second overall weight A weight calculating unit that calculates a difference between the first overall weight and the second overall weight as a picking weight;
A determination unit that determines whether the weight difference between the picking weight and the total weight of the target parts included in the picking list including the total weight of the parts is within an allowable range,
When it is determined that the weight difference is not within the allowable range, the unit weight of the target component is obtained from the component master information in which the unit weight and the allowable error are associated with the component, and the weight difference and the single unit weight are obtained. A warning display unit for displaying the expected shortage or excess of the target component on a display screen as a warning display based on the information.

The warning display section,
The warning display is generated on the basis of the weight difference, which prompts the operator to pick up the target component again.

The picking list is
Including state information representing the work state of the part,
The determination unit includes:
If it is determined that the weight difference is within the allowable range, completion information indicating that the picking is completed is set in the status information of the target component in the picking list.

  A list display unit configured to display, on the display screen, a picking instruction display including information on the target component as a target component to be picked next for the component whose status information has not been picked out of the component list of the picking list. Was.

Furthermore, it has erroneous shipping history information accumulating the erroneous shipping history,
The list display unit,
An alert based on the history of erroneous shipment corresponding to the target component is displayed on the picking instruction display.

The determination unit includes:
An allowable error of the target component is acquired from the component master information, and it is determined whether the weight difference is within an allowable range based on the allowable error of the target component.

The component master information further stores a degree of importance in which the unit weight and the allowable error are associated with each other,
The determination unit includes:
The importance of the target component is acquired from the component master information, and it is determined whether to determine the weight difference based on the importance of the target component.

The erroneous shipment prevention system according to the present invention includes:
Obtain the weight of the container storing the parts before the target component to be picked is picked as the first overall weight, and obtain the weight of the container after the target parts are picked as the second overall weight A weight calculating unit that calculates a difference between the first overall weight and the second overall weight as a picking weight;
A determination unit that determines whether the weight difference between the picking weight and the total weight of the target parts included in the picking list including the total weight of the parts is within an allowable range,
When it is determined that the weight difference is not within the allowable range, the unit weight of the target component is obtained from the component master information in which the unit weight and the allowable error are associated with the component, and the weight difference and the single unit weight are obtained. An erroneous shipment prevention device comprising: a warning display unit that displays the expected shortage or excess of the target component on a display screen as a warning display based on the
The container is built in a conveyor that carries the container to the position of the worker, when the container is carried to the position of the worker, comprising a weight measuring device that measures the weight of the container, is an erroneous shipping prevention system,
The weight calculator,
The first overall weight and the second overall weight are obtained from the weighing device.

The method for preventing erroneous shipment according to the present invention comprises:
The weight calculation unit obtains, as a first overall weight, the weight of the container storing the parts before the target part to be picked is picked, and calculates the weight of the container after the target parts are picked as the first overall weight. 2 is obtained as a total weight, a difference between the first total weight and the second total weight is calculated as a picking weight,
The determining unit determines whether the weight difference between the picking weight and the total weight of the target parts included in the picking list including the total weight of the parts is an allowable range,
When the warning display unit determines that the weight difference is not in the allowable range, obtains the unit weight of the target component from the component master information in which the unit weight and the allowable error are associated with the component, and obtains the weight difference and The expected shortage or excess of the target component is displayed on the display screen as a warning display based on the single unit weight.

The erroneous shipment prevention program according to the present invention is an erroneous shipment prevention program for an erroneous shipment prevention device that prevents erroneous shipment when shipping a part picked by a worker from a container storing the parts.
The weight of the container in which the component to be picked is stored before the component is picked is obtained as a first overall weight, and the weight of the container after the target component is picked is defined as the second overall weight. A weight calculation process of acquiring and calculating a difference between the first overall weight and the second overall weight as a picking weight;
A determination process of determining whether a weight difference between the picking weight and the total weight of the target components included in the picking list including the total weight of the components is within an allowable range,
When it is determined that the weight difference is not within the allowable range, the unit weight of the target component is obtained from the component master information in which the unit weight and the allowable error are associated with the component, and the weight difference and the single unit weight are obtained. And causing the computer to execute a warning display process of displaying the expected shortage or excess of the target component on the display screen as a warning display based on the information.

  In the erroneous shipment prevention system according to the present invention, the expected shortage or excess of the target component can be displayed as a warning display. Therefore, according to the erroneous shipment prevention system according to the present invention, by prompting the operator to perform correct picking, the weight check work can be made more efficient and erroneous shipment can be reliably prevented.

FIG. 1 is a schematic diagram illustrating the entirety of a warehouse system and an erroneous shipment prevention system according to a first embodiment. FIG. 1 is a schematic diagram showing a management system, a warehouse system, and an erroneous shipment prevention system according to a first embodiment. FIG. 1 is a configuration diagram of an erroneous shipment prevention device according to a first embodiment. FIG. 4 is a flowchart showing operations of the management system and the warehouse system according to the first embodiment. FIG. 4 is a flowchart showing the operation of the erroneous shipment prevention device according to the first embodiment. The figure which shows the example of the heading in the delivery management information which concerns on Embodiment 1. FIG. 4 is a diagram showing an example of a specification in the delivery management information according to the first embodiment. FIG. 3 is a diagram showing an example of component master information according to the first embodiment. FIG. 4 is a diagram showing an example of a picking list according to the first embodiment. FIG. 5 is a diagram showing an example of a picking instruction display before picking according to the first embodiment. FIG. 4 is a diagram showing an example of a picking instruction display after picking according to the first embodiment. FIG. 5 is a diagram showing an example of a warning display according to the first embodiment. FIG. 4 is a diagram showing an example of erroneous shipping history information according to the first embodiment. FIG. 10 is a diagram showing an example of a picking instruction display according to a modification of the first embodiment. FIG. 9 is a flowchart showing the operation of the erroneous shipment prevention device according to the second embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals. In the description of the embodiments, the description of the same or corresponding portions will be omitted or simplified as appropriate.

Embodiment 1 FIG.
*** Configuration description ***
FIG. 1 is a schematic diagram showing the entirety of a warehouse system 600 and an erroneous shipment prevention system 700 according to the present embodiment. FIG. 2 is a schematic diagram showing a management system 500, a warehouse system 600, and an erroneous shipment prevention system 700 according to the present embodiment.
The outline of the erroneous shipment prevention system 700 according to the present embodiment will be described with reference to FIGS.

The management system 500 manages the shipment of parts. The warehouse system 600 takes out the container storing the parts to be picked from the automatic warehouse rack 601 according to the take-out instruction data 501 transmitted from the management system 500. The erroneous shipment prevention system 700 includes the erroneous shipment prevention device 100. The erroneous shipment prevention system 700 is a system for preventing erroneous shipment when a part picked by an operator is shipped from a container for storing parts.
The outline of (1) to (5) in FIG. 1 will be described.
(1) In accordance with the delivery instruction data 501 from the management system 500, a container storing parts to be picked is delivered from the automatic warehouse rack 601.
(2) The container is transported to the picking work area 603 by the conveyor 602.
(3) The container arrives at the picking work area 603. At this time, on the display screen 202 of the unloading work PC (personal computer) 604, information on the arriving containers and the parts to be picked is displayed as a picking list 151.
The delivery work PC 604 is an example of the erroneous shipment prevention device 100.
(4) The worker 400 picks a component to be picked according to the instruction information on the display screen 202. The picking by the operator 400 is performed, and the weight of the container before and after the picking is measured by the weight measuring device 201 provided with the conveyor. Here, erroneous shipment prevention processing is performed by the erroneous shipment prevention system 700. Details of the erroneous shipment prevention processing by the erroneous shipment prevention system 700 will be described later.
(5) When a warning message is displayed on the display screen 202, the worker 400 reconfirms the contents of the warning message and the picked component, and correctly picks the component again. If there is no problem after reconfirmation, the operator 400 performs an operation of “confirmation completed” in the warning display. Thereby, the containers are re-entered into the automatic warehouse rack 601. When there are a plurality of parts, that is, a plurality of specifications in one picking list, the processes of (1) to (5) are repeated for the number of specifications.

  Next, the configuration of the erroneous shipment prevention device 100 according to the present embodiment will be described with reference to FIG. The erroneous shipment prevention device 100 is a computer. The mis-shipment prevention device 100 includes a processor 910 and other hardware such as a memory 921, an auxiliary storage device 922, an input interface 930, an output interface 940, and a communication device 950. The processor 910 is connected to other hardware via a signal line, and controls the other hardware.

  The erroneous shipment prevention device 100 includes a weight calculation unit 110, a determination unit 120, a list display unit 130, a warning display unit 140, and a storage unit 150 as functional elements. The storage unit 150 stores a picking list 151, component master information 152, and erroneous shipping history information 153.

  The functions of the weight calculation unit 110, the determination unit 120, the list display unit 130, and the warning display unit 140 are realized by software. The storage unit 150 is provided in the memory 921.

The processor 910 is a device that executes an erroneous shipment prevention program. The erroneous shipment prevention program is a program that implements the functions of the weight calculation unit 110, the determination unit 120, the list display unit 130, and the warning display unit 140.
The processor 910 is an IC (Integrated Circuit) that performs arithmetic processing. Specific examples of the processor 910 are a CPU, a DSP (Digital Signal Processor), and a GPU (Graphics Processing Unit).

The memory 921 is a storage device that temporarily stores data. A specific example of the memory 921 is an SRAM (Static Random Access Memory) or a DRAM (Dynamic Random Access Memory).
The auxiliary storage device 922 is a storage device for storing data. A specific example of the auxiliary storage device 922 is an HDD. The auxiliary storage device 922 may be a portable storage medium such as an SD (registered trademark) memory card, CF, NAND flash, flexible disk, optical disk, compact disk, Blu-ray (registered trademark) disk, or DVD. Note that HDD is an abbreviation for Hard Disk Drive. SD (registered trademark) is an abbreviation for Secure Digital. CF is an abbreviation for CompactFlash®. DVD is an abbreviation for Digital Versatile Disk.

  The input interface 930 is a port connected to an input device such as a mouse, a keyboard, or a touch panel. Further, the input interface 930 is connected to the weight measuring device 201 built in the conveyor 602, and acquires the weights (first total weight 211, second total weight 212) of the containers before and after picking. The input interface 930 is, specifically, a USB (Universal Serial Bus) terminal. Note that the input interface 930 may be a port connected to a LAN (Local Area Network). The erroneous shipment prevention device 100 acquires the weight of the container before and after the picking via the input interface 930.

  The output interface 940 is a port to which a cable of the display screen 202 such as a display is connected. The output interface 940 is, specifically, a USB terminal or an HDMI (registered trademark) (High Definition Multimedia Interface) terminal. The display is, specifically, an LCD (Liquid Crystal Display). The incorrect shipment prevention device 100 displays a picking list 151, a picking instruction display 131, and a warning display 141 on the display screen 202 via the output interface 940. The display screen 202 is a touch panel, and may receive a signal from the worker 400 and pass various signals to the processor 910 via an input interface.

  The communication device 950 includes a receiver and a transmitter. The communication device 950 is connected to a communication network such as a LAN, the Internet, or a telephone line. The communication device 950 is, specifically, a communication chip or a NIC (Network Interface Card). The erroneous shipment prevention device 100 acquires the delivery instruction data 501 from the management system 500 via the communication device 950. Further, the erroneous shipment prevention device 100 acquires the container arrival signal 61 from the warehouse system 600 via the communication device 950. Further, the erroneous shipping prevention device 100 transmits the re-entry signal 62 to the warehouse system 600 via the communication device 950.

  The mis-shipment prevention program is read by the processor 910 and executed by the processor 910. The memory 921 stores not only an erroneous shipment prevention program but also an OS (Operating System). The processor 910 executes the erroneous shipment prevention program while executing the OS. The erroneous shipment prevention program and the OS may be stored in the auxiliary storage device. The erroneous shipment prevention program and the OS stored in the auxiliary storage device are loaded into the memory 921 and executed by the processor 910. A part or all of the erroneous shipment prevention program may be incorporated in the OS.

  The mis-shipment prevention device 100 may include a plurality of processors instead of the processor 910. The plurality of processors share execution of the erroneous shipment prevention program. Each processor is a device that executes an erroneous shipment prevention program, similarly to the processor 910.

  Data, information, signal values, and variable values used, processed, or output by the erroneous shipment prevention program are stored in the memory 921, the auxiliary storage device 922, a register in the processor 910, or a cache memory.

The “part” of each part of the weight calculation unit 110, the determination unit 120, the list display unit 130, and the warning display unit 140 may be read as “process”, “procedure”, or “step”. Further, the “processing” of the weight calculation processing, the determination processing, the list display processing, and the warning display processing may be read as “program”, “program product”, or “computer-readable storage medium storing the program”.
The erroneous shipment prevention program causes a computer to execute each process, each procedure or each process in which the above “unit” of each component is replaced with “process”, “procedure” or “process”. The erroneous shipment prevention method is a method performed by the erroneous shipment prevention device 100 executing an erroneous shipment prevention program.
The erroneous shipment prevention program may be provided by being stored in a computer-readable recording medium. Further, the erroneous shipment prevention program may be provided as a program product.

*** Explanation of operation ***
FIG. 4 is a diagram showing operations of the management system 500 and the warehouse system 600 according to the present embodiment. FIG. 5 is a diagram illustrating an operation of the erroneous shipment prevention device 100 according to the present embodiment.
The operation of the erroneous shipment prevention device 100 according to the present embodiment will be described with reference to FIGS.

  In step S101, the management system 500 generates delivery instruction data 501 based on the delivery management information 510. The management system 500 transmits the delivery instruction data 501 to the warehouse system 600 and the erroneous shipment prevention system 700. The delivery management information 510 is a list of delivery plans managed by the management system 500.

FIG. 6 is an example of a heading 510a in the delivery management information 510 according to the present embodiment. FIG. 7 is an example of the specification 510b of the delivery management information 510 according to the present embodiment.
In the heading 510a of the delivery management information 510, information on a list of shipping instructions such as an instruction number, a shipping date, a shipping destination, and a request source is set. In the details 510b of the delivery management information 510, details for each instruction number of the shipping instruction are set. In the specification 510b of the delivery management information 510, information such as a specification number, an item code, an item name, a quantity, a container number, a delivery source storage location, and a delivery destination storage location is set for each instruction number.
The management system 500 generates, as the delivery instruction data 501, information on a delivery instruction to be processed based on the delivery management information 510. As a specific example, when the management system 500 sets the delivery instruction of the instruction number 990001 in FIG. 6 as the processing target exit instruction, the information of the parts with the detailed numbers 1 to 3 corresponding to the instruction number 990001 in FIG. 501 is generated.

Next, an operation when the warehouse system 600 receives the delivery instruction data 501 from the management system 500 will be described.
In step S <b> 201, the warehouse system 600 unloads a container storing parts to be picked from the automatic warehouse rack 601 based on the unloading instruction data 501. The parts to be picked are called target parts. For example, when the target component is the bearing -002, the warehouse system 600 unloads the container Y904 from the automatic warehouse rack 601.
In step S202, the warehouse system 600 transports the unloaded containers to the picking work area 603 by the conveyor 602.

  Next, an operation when the erroneous shipment prevention device 100 receives the delivery instruction data 501 from the management system 500 will be described. First, the erroneous shipment prevention device 100 receives the delivery instruction data 501 transmitted from the management system 500.

  In step S301, the list display unit 130 displays on the display screen 202 a picking list 151 including a list 51 of components to be shipped to the same destination and a total weight 518 of each component in the component list. Specifically, list display section 130 generates picking list 151 based on delivery instruction data 501 received from management system 500 and component master information 152 stored in memory 921. Then, the list display unit 130 displays the generated picking list 151 on the display screen 202.

FIG. 8 is a diagram illustrating an example of the component master information 152 according to the present embodiment.
The component master information 152 is information in which the unit weight 523, the permissible error 524, and the importance are associated with each of a plurality of components. Specifically, in the component master information 152, an item code 521, an item name 522, a unit weight 523, an allowable error 524, and a check rank 525 are set. Check rank 525 is an example of importance.
The permissible error 524 sets the allowable range of the weight difference between the weight of the actually picked component and the weight of the component picked by the delivery instruction data 501 when the corresponding component is picked. The check rank 525 will be described later.

FIG. 9 is a diagram illustrating an example of the picking list 151 according to the present embodiment.
In the picking list 151, status information 511, a number 512, an item code 513, an item name 514, a container number 515, a quantity 516, a unit weight 517, and a total weight 518 indicating the work status of the target part are set. The list display unit 130 calculates the total weight 518 of the parts by multiplying the quantity of the parts included in the delivery instruction data 501 by the unit weight 523 of the parts included in the parts master information 152. The total weight 518 of the part is the weight of the part specified by the picking instruction in the delivery instruction data 501, that is, the theoretical weight. In the state information 511, for example, blank is set when picking is not completed, and ○ is set when picking is completed.
In the present embodiment, the list display unit 130 generates the picking list 151 from the delivery instruction data 501 and the component master information 152. However, the picking list 151 of FIG. 9 may be generated in advance in the management system 500 and transmitted to the warehouse system 600 and the erroneous shipment prevention device 100.

After step S202 in FIG. 4, step S302 in FIG. 5 is executed.
In step S <b> 302, the weight calculation unit 110 acquires, as the first overall weight 211, the weight of the container before the target component is picked from the component list 51. That is, the weight calculation unit 110 acquires the weight of the container at the time when the container arrives at the picking work area 603 as the first overall weight 211. Specifically, when the container is carried to the position of the worker 400 by the conveyor 602, the weight measuring device 201 built in the conveyor 602 sets the weight of the container as the first overall weight 211 before the picking by the worker 400 is performed. Measure. Then, the weight calculator 110 acquires the first overall weight 211 from the weight measuring device 201. As a specific example, it is assumed that the weight of the container when the container arrives at the picking work area 603, that is, the weight of the first overall weight 211 is 1250 g.

  In step S303, the list display unit 130 sets a component whose status information 511 has not been picked in the component list 51 of the picking list 151 as a component to be picked next. Then, the list display unit 130 displays a picking instruction display 131 including information on the target component on the display screen 202. Alternatively, when the worker 400 touches a column of a component to be a target component on the picking list 151, the list display unit 130 may display a picking instruction display 131 including information on the target component on the display screen 202.

FIG. 10 is a diagram showing an example of a picking instruction display 131 before picking according to the present embodiment.
For example, when the worker 400 selects the target component column of the picking list 151 by touching or the like, the list display unit 130 may display a picking instruction display 131 including information on the target component on the display screen 202. Alternatively, when the first overall weight 211 is obtained, the list display unit 130 may automatically display the picking instruction display 131 of the target component.
In the picking instruction display 131, an item code 311, a container number 312, an item name 313, an instruction number 314, a designated weight 315, and an actually measured value of the target part are set. As the measured values, the weight of the container before the picking operation (before operation 316), the weight of the container after the picking operation (after operation 317), and the subtraction 318 thereof are set. The weight of the container before the picking operation (before the operation 316) is the first overall weight 211, and the weight of the container after the picking operation (after the operation 317) is the second overall weight 212. The subtraction 318 is a picking weight 213 described later.
The instruction number 314 is the number of parts specified in the delivery instruction data 501, and the number 516 of the picking list 151 is set. The designated weight is the weight of the component for which the picking instruction is given in the delivery instruction data 501, and the total weight 518 of the picking list 151 is set.
FIG. 10 shows the picking instruction display 131 before picking, so that the actual measurement value is set to 1250 g only for the before-work 316.

  In step S303, when the list display unit 130 displays the picking instruction display 131, the operator 400 picks the target component from the container according to the picking instruction display 131. In the example of FIG. 10, the worker 400 checks the label of the arriving container and the container number 312 displayed on the picking instruction display 131, and picks five bearings-002 from the container. When the picking is completed, the worker 400 presses the completion button 319 of the picking instruction display 131.

  In step S304, the weight calculation unit 110 acquires the weight of the container after the target component is picked as the second overall weight 212. Specifically, when the completion button 319 of the picking instruction display 131 is pressed, the weight measuring device 201 measures the weight of the container as the second overall weight 212. The weight calculator 110 acquires the second overall weight 212 from the weight measuring device 201. As a specific example, it is assumed that the weight of the container after the worker 400 picks the parts, that is, the second overall weight 212 is 1100.5 g. The list display unit 130 sets 1100.5 g after work 317 in the actually measured value of the picking instruction display 131.

  In step S305, the weight calculator 110 calculates the difference between the first overall weight 211 and the second overall weight 212 as the picking weight 213. In a specific example, the weight calculator 110 calculates the difference between the first total weight 211 and the second total weight 212 as 1250.0-1100.5 = 149.5. That is, the picking weight 213 is 149.5 g. The list display unit 130 sets 149.5 g in the subtraction 318 in the actually measured value of the picking instruction display 131.

  FIG. 11 is a diagram showing an example of a picking instruction display 131 after picking according to the present embodiment.

  In step S306 and step S307, the determination unit 120 determines whether the weight difference between the picking weight 213 and the total weight 518 of the target components included in the picking list 151 is within an allowable range. Specifically, the determination unit 120 calculates a weight difference between the picking weight 213 (subtraction 318) actually picked and the specified weight 315 specified by the delivery instruction. In addition, the determination unit 120 acquires the allowable error 524 of the target component from the component master information 152. The determination unit 120 determines whether the weight difference is within the allowable range based on the allowable error 524. In a specific example, the determination unit 120 calculates a weight difference “100.5 g” between the picking weight 213 (subtraction 318) “149.5 g” and the designated weight 315 “250.0 g”. In addition, the determination unit 120 acquires the allowable error “−3.0% to 3.0%” of the bearing-002 from the component master information 152. Since the weight difference “100.5 g” is out of the allowable error range “−3.0% to 3.0%” for the designated weight 315 “250.0 g”, the weight difference “100.5 g” is It is determined that it is not within the allowable range.

  If it is determined in step S307 that the weight difference is within the allowable range, the process proceeds to step S308. If it is determined in step S307 that the weight difference is not within the allowable range, the process proceeds to step S309.

In step S308, the determination unit 120 sets completion information (for example, “「 ”) indicating that the picking has been completed in the status information 511 of the target component in the picking list 151. Then, the determination unit 120 transmits to the warehouse system 600 a re-entry signal 62 instructing re-entry of the container.
In step S203 of FIG. 4, the warehouse system 600 re-enters the containers in the automatic warehouse rack 601 according to the re-entry signal 62.

In step S309, the warning display unit 140 generates a warning display 141 based on the weight difference, and displays it on the display screen 202. For example, the warning display unit 140 generates a warning display 141 that urges the worker 400 to pick up the target component again based on the weight difference.
Here, "prompt for re-picking" means that the warning display unit 140 displays a warning prompting to reconfirm the number of target components based on the determination unit 120 determining that the number of target components is insufficient or excessive. To do so.

FIG. 12 is a diagram showing an example of the warning display 141 according to the present embodiment.
The warning display 141 displays, for example, a warning content 411, an item code 412, an item name 413, an excess / deficiency number 414, and a confirmation completion button 415.
The warning display unit 140 generates a warning display 141 as follows based on the weight difference.
First, the warning display unit 140 calculates the weight difference / unit weight = 100.5 / 50 = 2.01 [pieces]. As a result, the deficient number of the bearing-002 as the target part is 2.01 [pieces] as the measured value. When the actual measurement value of 2.01 [pieces] is represented by an integer rounded value, it becomes 2.00 [pieces]. Here, if the difference between the measured value and the rounded integer value is within the error range of the target component, the warning display unit 140 determines that the target component is insufficient (or excessive) by the number of the integer rounded values. In FIG. 12, the warning display unit 140 determines that the difference 0.01 between the actually measured value and the integer rounded value is within the error range of the target part, and warns the possibility that two bearings-002 are insufficient. Is displayed.

  When the warning display 141 is displayed in step S309, the operator 400 checks the picked actual item and the instruction content again according to the warning display 141, and performs picking again. When the picking is completed again, the worker 400 presses the confirmation completion button 415 of the warning display 141.

  In step S310, when the warning display unit 140 receives the press of the confirmation completion button 415 of the warning display 141, the warning display 141 is closed, and the process returns to step S304. Then, the erroneous shipping prevention device 100 acquires the weight of the container after the picking again, and determines the weight difference. In this manner, the erroneous shipment prevention device 100 repeats the process for each target component to be picked until it is determined that there is no picking error.

*** Other configuration ***
<Modification 1>
FIG. 13 is a diagram illustrating an example of the erroneous shipping history information 153 according to the present embodiment.
The erroneous shipping history information 153 stores the erroneous shipping history. In the erroneous shipping history information 153, information such as an occurrence date 531, a serial number 532, an item code 533, an item name 534, a shipping destination 535, an erroneous shipping classification code 536, and erroneous shipping details 537 are accumulated.

FIG. 14 is a diagram showing an example of a picking instruction display 131 according to a modification of the present embodiment.
The list display unit 130 may display an alert 320 based on the history of erroneous shipment corresponding to the target component on the picking instruction display 131. Specifically, the list display unit 130 refers to the erroneous shipping history information 153 and acquires the erroneous shipping classification code 536 and the erroneous shipping details 537 corresponding to the target component. The list display unit 130 generates the content to be displayed on the alert 320 based on the erroneous shipment classification code 536 and the erroneous shipment details 537. The list display unit 130 displays a picking instruction display 131 including the generated alert 320 on the display screen 202. Specifically, a method of generating the alert 320 based on the alert message information in which alert message information (not shown) corresponding to the erroneous shipment classification code 536 is stored is considered. .

<Modification 2>
In the present embodiment, the erroneous shipment prevention device 100 performs a weight check for each component of the picking list 151. However, the erroneous shipment prevention device 100 uses the total weight of all the picked parts and the total weight of all the specified target parts when the weight check is OK for all the parts in the picking list 151. Then, the weight check may be performed again. At this time, if there is a difference equal to or larger than the allowable error, the processing described in steps S306 and S307 is executed for the entire target component included in the picking list 151, and a warning display 141 is displayed. You may.

<Modification 3>
In the present embodiment, the functions of the weight calculation unit 110, the determination unit 120, the list display unit 130, and the warning display unit 140 are realized by software. As a modification, the functions of the weight calculation unit 110, the determination unit 120, the list display unit 130, and the warning display unit 140 may be realized by hardware.
The erroneous shipment prevention device 100 includes an electronic circuit, a memory 921, an auxiliary storage device 922, an input interface 930, an output interface 940, and a communication device 950.

The electronic circuit is a dedicated electronic circuit that realizes the functions of the weight calculation unit 110, the determination unit 120, the list display unit 130, and the warning display unit 140.
The electronic circuit is, specifically, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, a logic IC, a GA, an ASIC, or an FPGA. GA is an abbreviation for Gate Array. ASIC is an abbreviation for Application Specific Integrated Circuit. FPGA is an abbreviation for Field-Programmable Gate Array.
The functions of the weight calculation unit 110, the determination unit 120, the list display unit 130, and the warning display unit 140 may be realized by one electronic circuit, or may be realized by being distributed to a plurality of electronic circuits.
As another modification, a part of the functions of the weight calculation unit 110, the determination unit 120, the list display unit 130, and the warning display unit 140 may be implemented by an electronic circuit, and the remaining functions may be implemented by software.

  Each of the processor and the electronic circuit is also called a processing circuitry. That is, in the erroneous shipment prevention device 100, the functions of the weight calculation unit 110, the determination unit 120, the list display unit 130, and the warning display unit 140 are realized by the processing circuitry.

*** Explanation of effect of this embodiment ***
In the erroneous shipment prevention system according to the present embodiment, the weight difference between the weight of the picked component and the designated weight can be determined for each component of the target component to be shipped, and a warning display can be displayed for each component. . Therefore, according to the erroneous shipment prevention system according to the present embodiment, all parts to be shipped can be individually and correctly picked, and erroneous shipment can be reliably prevented.

  In the erroneous shipment prevention system according to the present embodiment, the warning display unit generates a warning display based on the weight difference. Therefore, according to the erroneous shipment prevention system according to the present embodiment, the worker can perform the picking again in a short time, and the weight check work can be made more efficient.

  In the erroneous shipment prevention system according to the present embodiment, the weight measuring device is built in the conveyor, and when the container is carried to the position of the worker by the conveyor, the weight of the container is automatically measured. Therefore, according to the erroneous shipment prevention system according to the present embodiment, it is possible to reduce the burden on the operator who performs the weight check operation.

  In the erroneous shipment prevention system according to the present embodiment, the information of the target component picked by the list display unit is displayed on the display screen as a picking instruction display. Therefore, according to the erroneous shipment prevention system according to the present embodiment, the worker can perform the picking in accordance with the picking instruction display, and the workability is improved.

  In the erroneous shipment prevention system according to the present embodiment, the list display unit displays an alert on the picking instruction display based on the erroneous shipment history information. Therefore, according to the erroneous shipment prevention system according to the present embodiment, picking errors can be reduced by notifying the worker of precautions corresponding to parts.

Embodiment 2 FIG.
In the present embodiment, points different from Embodiment 1 will be mainly described. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In the first embodiment, it has been described that the weight check is performed for all the components of the picking list 151. However, in order to increase the efficiency of the weight check operation, there is a case where it is desired to perform a weight check only on parts that are easily mistaken or only expensive parts. In such a case, the determination unit 120 may perform a weight check based on the check rank 525 (importance) set in the component master information 152 in FIG.
The configuration of the erroneous shipment prevention device 100 is the same as that of the first embodiment.

  The check rank 525 of the component master information 152 in FIG. 8 is ranked A, B, or C. For example, rank A is a high-priced part, and is attached to a part for which a weight check is essential. In addition, the B rank is a small part and is easy to be mistaken. The C rank is lightweight, has a low need for weight check, and is attached to a component that does not require weight check. In the example of FIG. 8, the ranking is performed in three stages. However, the setting of the check rank 525 may be performed under any conditions, and the number of ranking stages may be any number. The setting of the check rank 525 can be arbitrarily set.

FIG. 15 is a diagram illustrating the operation of the erroneous shipment prevention device 100 according to the present embodiment. FIG. 15 corresponds to FIG. 5 of the first embodiment.
After step S303, in step S303a, the determination unit 120 acquires the check rank 525 (importance) of the target component from the component master information 152. The determination unit 120 determines whether to determine the weight difference based on the check rank 525 (importance) of the target component. If the weight difference is determined, that is, if the check rank 525 is A or B, the process proceeds to step S304. If the determination of the weight difference is not performed, that is, if the check rank 525 is C, the process proceeds to step S303b.
In step S303b, when the list display unit 130 receives the press of the completion button 319 of the picking instruction display 131 by the operator 400, the process proceeds to step S308.

  As described above, according to the erroneous shipment prevention system according to the present embodiment, the weight check can be skipped for parts that do not require a weight check, so that the weight check operation can be made more efficient.

In the first and second embodiments, each unit of the erroneous shipment prevention device has been described as an independent functional block. However, the configuration of the erroneous shipment prevention device may not be the configuration as in the above-described embodiment. The functional block of the erroneous shipment prevention device may have any configuration as long as the function described in the above embodiment can be realized. Further, the erroneous shipment prevention device may be a system including a plurality of devices instead of one device.
Further, a plurality of parts of the first and second embodiments may be combined and implemented. Alternatively, one of these embodiments may be implemented. In addition, these embodiments may be implemented in any combination as a whole or a part.
That is, in the first and second embodiments, a free combination of the embodiments, a modification of an arbitrary component of each embodiment, or an omission of any component in each embodiment is possible.

  It should be noted that the above-described embodiments are essentially preferable examples, and are not intended to limit the scope of the present invention, the scope of applicable products of the present invention, and the range of uses of the present invention. Various changes can be made to the embodiment described above as needed.

  100 mistaken shipment prevention device, 110 weight calculation unit, 120 judgment unit, 130 list display unit, 131 picking instruction display, 314 instruction number, 315 designated weight, 316 before work, 317 after work, 318 subtraction, 319 complete button, 320 Alert, 140 warning display section, 141 warning display, 411 warning content, 414 excess / deficiency number, 415 confirmation completion button, 150 storage section, 151 picking list, 51 parts list, 511 status information, 512 number, 311, 412, 513, 521, 533 Item code, 313, 413, 514, 522, 534 Item name, 312, 515 Container number, 516 Quantity, 517, 523 Unit weight, 518 Total weight, 152 Parts master information, 524 Tolerance, 525 Check Rank, 153 wrong shipment History information, 531 date of occurrence, 532 serial number, 535 shipping address, 536 incorrect shipping classification code, 537 incorrect shipping details, 201 weight measuring device, 202 display screen, 211 first overall weight, 212 second overall weight, 213 picking Weight, 400 workers, 500 management system, 501 delivery instruction data, 510 delivery management information, 510a headline, 510b details, 600 warehouse system, 61 container arrival signal, 62 re-entry signal, 601 automatic warehouse rack, 602 conveyor, 603 picking Work area, 604 Outgoing work PC, 700 Mis-shipment prevention system, 910 processor, 921 memory, 922 auxiliary storage device, 930 input interface, 940 output interface, 950 communication device.

Claims (10)

Obtain the weight of the container storing the parts before the target component to be picked is picked as the first overall weight, and obtain the weight of the container after the target parts are picked as the second overall weight A weight calculating unit that calculates a difference between the first overall weight and the second overall weight as a picking weight;
A determination unit that determines whether the weight difference between the picking weight and the total weight of the target parts included in the picking list including the total weight of the parts is within an allowable range,
When it is determined that the weight difference is not within the allowable range, the unit weight of the target component is obtained from component master information in which the unit weight and the allowable error are associated with the component, and the weight difference and the single unit weight are obtained. And a warning display unit for displaying the expected shortage or excess of the target component on a display screen based on the warning. The warning display section,
The erroneous shipment prevention device according to claim 1, wherein the warning display is generated based on the weight difference, and the warning display prompting a worker to re-pick the target component. The picking list is
Including state information representing the work state of the part,
The determination unit includes:
3. The erroneous shipment according to claim 1, wherein when the weight difference is determined to be within the allowable range, completion information indicating that the picking is completed is set in the status information of the target component in the picking list. 4. Prevention device.   A list display unit configured to display, on the display screen, a picking instruction display including information on the target component as a target component to be picked next for the component whose status information has not been picked out of the component list of the picking list. The erroneous shipment prevention device according to claim 3. Furthermore, it has erroneous shipping history information accumulating the erroneous shipping history,
The list display unit,
The erroneous shipment prevention device according to claim 4, wherein a warning based on a history of erroneous shipment corresponding to the target component is displayed on the picking instruction display. The determination unit includes:
The method according to claim 1, wherein an allowable error of the target component is obtained from the component master information, and whether the weight difference is within an allowable range is determined based on the allowable error of the target component. The erroneous shipment prevention device described. The component master information further stores a degree of importance in which the unit weight and the allowable error are associated with each other,
The determination unit includes:
7. The erroneous shipment prevention device according to claim 6, wherein the importance of the target component is acquired from the component master information, and whether to determine the weight difference is determined based on the importance of the target component. Obtain the weight of the container storing the parts before the target component to be picked is picked as the first overall weight, and obtain the weight of the container after the target parts are picked as the second overall weight A weight calculating unit that calculates a difference between the first overall weight and the second overall weight as a picking weight;
A determination unit that determines whether the weight difference between the picking weight and the total weight of the target parts included in the picking list including the total weight of the parts is within an allowable range,
When it is determined that the weight difference is not within the allowable range, the unit weight of the target component is obtained from the component master information in which the unit weight and the allowable error are associated with the component, and the weight difference and the single unit weight are obtained. An erroneous shipment prevention device comprising: a warning display unit that displays the expected shortage or excess of the target component on a display screen as a warning display based on the
The container is built in a conveyor that carries the container to the position of the worker, when the container is carried to the position of the worker, comprising a weight measuring device that measures the weight of the container, is an erroneous shipping prevention system,
The weight calculator,
An erroneous shipment prevention system for acquiring the first overall weight and the second overall weight from the weight measuring device. Obtain the weight of the container storing the parts before the target component to be picked is picked as the first overall weight, and obtain the weight of the container after the target parts are picked as the second overall weight And calculating a difference between the first overall weight and the second overall weight as a picking weight,
The determining unit determines whether the weight difference between the picking weight and the total weight of the target parts included in the picking list including the total weight of the parts is an allowable range,
When the warning display unit determines that the weight difference is not in the allowable range, obtains the unit weight of the target component from the component master information in which the unit weight and the allowable error are associated with the component, and obtains the weight difference and An erroneous shipment prevention method for displaying an expected shortage or excess of the target component on a display screen as a warning display based on the single unit weight. In the erroneous shipment prevention program of the erroneous shipment prevention device for preventing erroneous shipment when shipping a part picked by a worker from a container storing parts,
The weight of the container in which the component to be picked is stored before the component is picked is obtained as a first overall weight, and the weight of the container after the target component is picked is defined as the second overall weight. A weight calculation process of acquiring and calculating a difference between the first overall weight and the second overall weight as a picking weight;
A determination process of determining whether a weight difference between the picking weight and the total weight of the target components included in the picking list including the total weight of the components is within an allowable range,
When it is determined that the weight difference is not within the allowable range, the unit weight of the target component is obtained from the component master information in which the unit weight and the allowable error are associated with the component, and the weight difference and the single unit weight are obtained. An erroneous shipment prevention program for causing a computer to execute a warning display process of displaying an expected shortage or excess of the target component on a display screen as a warning display based on the information.

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