JP2014199595A - Work load estimation program, work load estimation method and information processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To properly estimate a work load.SOLUTION: A work load estimation program makes a computer execute processing of: acquiring data indicating temporal change of the attitude of an operator according to a work or data indicating the holding matter of the operator according to the work; referring to data indicating the correspondence between the attitude of the operator and a load or data indicating the correspondence between the holding matter and the load; specifying a load corresponding to each attitude of the operator included in the acquired data and a load corresponding to the holding matter of the operator included in the acquired data; collecting the specified loads; and calculating the total load of the operator in the work.

Description

  The present invention relates to a workload estimation program, a workload estimation method, and an information processing apparatus.

  Assembling of products in factories and the like is generally performed by dividing into a plurality of processes. Moreover, it is necessary to plan the process divided | segmented so that the working time of each process may be equalized, and the waiting time in a specific process does not generate | occur | produce.

  The conventional simulation tool subdivides the assembly time of the parts constituting the product, and divides the process so that the work time for each process becomes equal based on the assembly order and the assembly time (for example, Patent Documents) 1).

Japanese Patent Laid-Open No. 61-30365

  However, in the conventional method, it is impossible to determine whether or not there is a load concentration on a specific worker from the viewpoint of the degree of fatigue of the worker who performs the work of each process. For example, in an actual assembling operation, when a heavy part is assembled and when a light part is assembled, the load on the operator is greatly different even if the working time is the same. It is clear that the load varies depending on the posture during work.

  In one aspect, the present invention aims to properly estimate the workload.

  The workload estimation program in one aspect obtains data indicating a temporal change in the posture of the worker according to the work or data indicating a worker's holding according to the work, and calculates the posture and load of the worker. Referring to data indicating correspondence or data indicating correspondence between the stored object and the load, load corresponding to each posture of the worker included in the acquired data or retention of the worker included in the acquired data A load corresponding to an object is specified, the specified loads are totaled, and a total load of the worker in the work is calculated.

  The workload can be estimated appropriately.

It is a figure which shows an example of a function structure of information processing apparatus. It is a figure which shows an example of the hardware constitutions which can implement | achieve a workload estimation process. It is a flowchart which shows an example of a workload estimation process. It is a flowchart which shows an example of a workload calculation process. It is a figure which shows an example of a work table. It is a figure for demonstrating the setting content of a coordinate. It is a figure which shows an example of the load table for every attitude | position. It is a figure which shows an example of the load coefficient table for every holding | maintenance thing. It is a figure which shows an example of an operator load table. It is a figure which shows an example of an operator's attitude | position. It is a figure which shows the specific example of load calculation.

  Hereinafter, embodiments will be described in detail with reference to the accompanying drawings.

<Functional configuration example of information processing apparatus>
FIG. 1 is a diagram illustrating an example of a functional configuration of the information processing apparatus. The information processing apparatus 10 illustrated in FIG. 1 includes an input unit 11, a work creation unit 12, a load calculation unit 13, a display unit 14, and a storage unit 15. The load calculation unit 13 includes a posture determination unit 13-1, a part-by-part load calculation unit 13-2, and a worker-by-worker load totaling unit 13-3. Moreover, the memory | storage means 15 has the work table 15-1, the load table 15-2 for every attitude | position, the load coefficient table 15-3 for every holding | maintenance thing, and the worker load table 15-4.

  The input unit 11 accepts input such as setting of work contents performed by a user such as an administrator in a predetermined facility such as a factory. Further, the input unit 11 accepts input of information such as worker selection and schedule.

  The work creation means 12 creates a work process plan based on various information obtained by the input means 11, and creates work contents (work schedule) for each worker for the created process. For example, the work creation means 12 divides a product assembly work in a factory or the like into one or a plurality of processes, and corresponds to the work time of each divided process so that a waiting time in a specific process does not occur. Assign workers. As a process plan creation method, for example, a Program Evaluation and Review Technique (PERT) method, a period pile method, or a time plan method can be used, but the method is not limited to this.

  For example, the work creation means 12 creates the work contents of each of a plurality of workers, including information on the temporal change of the worker's posture or the information held by the workers. Further, the work creation unit 12 changes the work content for at least one worker among the plurality of workers based on the total load of the worker according to the work content calculated by the load calculation unit 13. . Based on the load result calculated by the load calculation means 13, the work creation means 12 creates work contents based on process divisions, worker changes, break times, etc., for example, so that the load on each worker is equalized. Is executed again, and the changed work content in which the total load of the plurality of workers is reduced is output. The work creation means 12 stores the work contents and the like for each created worker in the work table 15-1, for example.

  The load calculating means 13 calculates the work load for each worker by simulation with reference to the work table 15-1 for the work assignment information obtained by the work creating means 12. For example, the load calculating unit 13 acquires the posture of the worker and information on the holding object in a state where the load of the worker in the present embodiment is not taken into consideration at every predetermined time or every predetermined work, The work load when the load is taken into consideration is estimated based on the holding material and the like. Note that the holding object is not limited to an object held in the hand of an operator, and includes, for example, an object to be worn on the hand, head, waist, or the like, or an object to be moved by applying force.

  Specifically, the posture determination unit 13-1 in the load calculation unit 13 determines the posture of each worker generated corresponding to the work content. For example, the posture determination unit 13-1 refers to the load table 15-2 for each posture, identifies the posture that is the same as, or approximates, the posture necessary for performing the work, and sets the posture in advance for the identified posture. Get the load that has been. The posture is, for example, a predetermined operation such as “sitting”, “twisting the waist”, “standing”, or a combination of a plurality of operations, but is not limited thereto.

  The part-by-part load calculating unit 13-2 in the load calculating unit 13 calculates a load for each part of the worker's body with respect to an action that occurs during work. For example, the part load calculation unit 13-2 refers to the load coefficient table 15-3 for each holding object, and shapes, weights (weights), and sizes of objects (for example, tools and materials) obtained during the operation. The corresponding load coefficient is specified based on the etc., and the load for each part is calculated based on the specified load coefficient. For example, the part-by-part load calculating unit 13-2 calculates the load for each part such as a hand holding the tool when there is “operation to lift the tool on the floor to the desk”.

  The load calculation unit 13-3 for each worker in the load calculation unit 13 totals loads for each worker from the load information obtained by the posture determination unit 13-1, the part load calculation unit 13-2, and the like. The total load (total load) for each worker may be stored in the worker load table 15-4 or displayed on the screen of the display unit 14.

  In the present embodiment, with the above-described configuration, a simulation is performed before the production line is actually operated, and the work load is estimated from, for example, the posture of the worker and the weight of parts to be transported. Thereby, in this embodiment, for example, information for equalizing work time considering the load for each worker can be displayed and stored, and creation of an appropriate process plan can be supported.

  The memory | storage means 15 memorize | stores the work table 15-1, the load table 15-2 for every attitude | position, the load coefficient table 15-3 for every holding | maintenance thing, and the worker load table 15-4 mentioned above. In addition to the various tables described above, the storage unit 15 temporarily stores, for example, various setting information, information during processing, and the like.

  The various tables described above may not be provided in the information processing apparatus 10. The various tables described above may be stored in, for example, an external device (for example, a database) connected via a communication network represented by a local area network (LAN) or the Internet. The information processing apparatus 10 can read and write necessary information by accessing the above-described external apparatus or the like via a communication network as necessary.

  The information processing apparatus 10 described above is, for example, a personal computer (PC) or a server, but is not limited thereto, and may be a communication terminal such as a tablet terminal.

  In the present embodiment, the workload can be appropriately estimated by the above-described configuration. Further, in this embodiment, the work time considering the load of each worker can be equalized by weighting the work content instead of simply equalizing the work time. A change work schedule with reduced total load bias can be output. Therefore, in this embodiment, creation of an appropriate process plan can be supported.

<Hardware configuration example>
By installing an execution program (workload estimation program) that can execute each function of the information processing apparatus described above, for example, on a general-purpose PC or the like, the workload estimation process in the present embodiment can be realized. Here, a hardware configuration example of a computer capable of realizing the workload estimation process in the information processing apparatus 10 will be described with reference to the drawings.

  FIG. 2 is a diagram illustrating an example of a hardware configuration capable of realizing the workload estimation process. 2 includes an input device 21, an output device 22, a drive device 23, an auxiliary storage device 24, a main storage device 25, a central processing unit (CPU) 26 for performing various controls, and a network connection. Which are connected to each other by a system bus B.

  The input device 21 includes a pointing device such as a keyboard and a mouse operated by an administrator (user) of the information processing apparatus 10 and a voice input device such as a microphone. The input device 21 receives input of a program execution instruction, various operation information, information for starting up software, and the like from a user or the like.

  The output device 22 has a display for displaying various windows and data necessary for operating the computer main body for performing the processing in the present embodiment. indicate. Further, the output device 22 prints the above processing result or the like on a print medium such as paper and presents it to an administrator or the like.

  Here, the execution program installed in the computer main body in the present embodiment is provided by, for example, a universal recording bus 28 such as a Universal Serial Bus (USB) memory, a CD-ROM, or a DVD. The recording medium 28 on which the program is recorded can be set in the drive device 24, and an execution program included in the recording medium 28 is transferred from the recording medium 28 via the drive device 24 on the basis of a control signal from the CPU 26. Installed on.

  The auxiliary storage device 24 is a storage unit such as a hard disk drive or a solid state drive (SSD). The auxiliary storage device 24 stores an execution program in the present embodiment, a control program provided in a computer, and the like based on a control signal from the CPU 26, and performs input / output as necessary. The auxiliary storage device 24 can read and write necessary information from each stored information based on a control signal from the CPU 26 and the like.

  The main storage device 25 stores an execution program read from the auxiliary storage device 24 by the CPU 26. The main storage device 25 is a read only memory (ROM), a random access memory (RAM), or the like. The auxiliary storage device 24 and the main storage device 25 correspond to, for example, the storage unit 15 described above.

  The CPU 26 controls processing of the entire computer such as various operations and data input / output with each hardware component based on a control program such as an operating system and an execution program stored in the main storage device 25. Each process can be realized. Various information necessary during the execution of the program can be acquired from the auxiliary storage device 24, and the execution results and the like can also be stored.

  Specifically, the CPU 26 responds to the program on the main storage device 25 by causing the workload estimation program installed in the auxiliary storage device 24 to be executed based on, for example, a program execution instruction obtained from the input device 21. Perform the process.

  For example, the CPU 26 executes a work load estimation program to perform processing such as input of setting information such as predetermined work contents by the input unit 11 and creation of a work table by the work creation unit 12. Further, the CPU 26 executes the workload estimation program, for example, calculates the load for each worker in the load calculation means 13 described above, displays the load information for each worker on the display means 14, the work content, and various tables. Etc. are displayed. In addition, the processing content in CPU26 is not limited to this.

  The network connection device 27 acquires an execution program, software, setting information, and the like from an external device or the like connected to the communication network by connecting to the communication network or the like based on a control signal from the CPU 26. Further, the network connection device 27 can provide an execution result obtained by executing the program or the execution program itself in the present embodiment to an external device or the like.

  With the hardware configuration described above, the workload estimation process in the present embodiment can be executed. Further, by installing the program, the workload estimation process in the present embodiment can be easily realized by a general-purpose PC or server.

<Example of workload estimation processing>
An example of workload estimation processing in the information processing apparatus 10 will be described using a flowchart. FIG. 3 is a flowchart illustrating an example of workload estimation processing.

  In the workload estimation process shown in the example of FIG. 3, the input unit 11 accepts input of work content and setting information such as a worker from a user such as an administrator (S01). Note that the setting information may be set in advance.

  Next, the work creation unit 12 divides the work contents into predetermined processes from various setting information input by the processing of S01, and the work contents (work table) for each worker according to the divided processes and periods. ) Is created (S02).

  Next, the load calculation means 13 calculates the load for each worker using the work table obtained by the process of S02 (S03). Next, the load calculation unit 13 determines whether or not to reset the work content of each worker from the calculation result obtained by the process of S03 (S04). The determination of whether or not to reset can be determined to be performed when the difference between the maximum value and the minimum value of the workload calculated for each worker is greater than or equal to a preset threshold value, for example. The determination method is not limited to this.

  When resetting (YES in S04), the load calculating unit 13 resets the work based on various setting information received in the process of S01, other work conditions, and the like (S05), and returns to the process of S02. Note that the resetting can be received by the user by inputting again with the input unit 11, but the setting information is not limited to this. In the process of S05, for example, settings such as dividing a load into a predetermined number or assigning workers to a portion with a large work load may be automatically performed. Thereby, the work creation means 12 can create a work table including the work load of each worker.

  Further, when the work content is not reset (NO in S04), the load calculation means 13 outputs the result to the screen of the display means 14 or stores it in the storage means 15 (S05).

<S03: Workload calculation processing>
Next, the workload calculation process in S03 described above will be specifically described using a flowchart. FIG. 4 is a flowchart illustrating an example of a workload calculation process. In the workload calculation process shown in the example of FIG. 4, the load calculation means 13 calculates a load caused by the user's action at every predetermined time interval or a load due to a holding object for a predetermined process operation or the like. An initial value (0) is set to time (Time), which is an example (S11).

  Next, the load calculation means 13 acquires the posture of the worker for every predetermined time (Time point) for the predetermined work from the work table 15-1 (S12). Next, the load calculation means 13 sets an initial value (1) in posture identification information (posture No), which is an example of a variable, in order to refer to the posture-specific load table 15-2 (S13). Next, the load calculation unit 13 acquires posture data from the posture-specific load table 15-2 (S14), and acquires an approximation rate between the posture data and a posture at a certain time (Time point) during work (S15). . The approximation rate can be acquired, for example, by comparing the coordinate positions of the parts of the mutual posture data, but is not limited to this. The closer the coordinate position of each part in the mutual posture data, the higher the approximation rate.

  Next, the load calculation means 13 compares the posture of the worker at a certain time (time) with each posture data obtained from the posture-specific load table 15-2, and whether the approximation rate is higher than the previous posture. It is determined whether or not (S16).

  When the approximation rate is higher than the previous posture (YES in S16), the load calculating unit 13 acquires a load based on the posture data from the posture-by-posture load table 15-2, and the load factor table 15-3 from the load factor table 15-3. The load based on the worker's holding at the time is acquired (S17). Next, the load calculation means 13 calculates the load at that time (Time time) using the load based on the above-described posture data and the load based on the retained object (S18).

  Further, the load calculation unit 13 determines whether the degree of approximation is not higher than the previous posture (NO in S16) or whether the processing is completed for all postures included in the posture-by-posture load table 15-2 after the processing of S18. Is determined (S19). If the process has not been completed (NO in S19), the load calculating means 13 updates (+1) the posture identification information (posture No) to perform approximate calculation for the next posture (S20), and S14. Return to the process.

  That is, in the processes of S14 to S20, the posture data that is most approximated or the same posture data is acquired from the posture-specific load table 15-2 with respect to the posture of the worker at the time point acquired from the work table. Further, the load is calculated using the load information set in the posture and the load information based on the worker's holding at the time point. Therefore, the final calculation result in the process of S18 is a load calculated based on the most approximate posture data or the load based on the same posture data and the load based on the worker's holding at that time.

  In the process of S19, when all the postures are completed (YES in S19), the load calculating unit 13 outputs the calculation result, the posture ID, and the like obtained in the process of S18 to the worker load table 15-4 and the like. It is determined whether or not a predetermined time for a predetermined work has ended (S21).

  When the predetermined time has not expired (NO in S21), the load calculation means 13 updates (+1) the time (Time) to perform the same load calculation processing at the next time (S22), The process returns to S12. In the example of FIG. 4, the load on the worker's posture, the holding object, and the like is calculated in units of one second. However, the present invention is not limited to this. Further, the load calculation may be performed at regular intervals for all the times related to the process. For example, the load may be calculated based on the timing at which a change in a predetermined operation (for example, the posture of the worker) is detected. May be processed.

  When the predetermined time ends in the process of S21 (YES in S21), the load calculating unit 13 calculates the total load with reference to, for example, the worker load table 15-4 (S23), and outputs the result. (S24). The output of the result may be output to the worker load table 15-4, displayed on the display means 14, or both.

  The process shown in the example of FIG. 4 described above is performed for each worker. Thereby, this embodiment can calculate the work load including the attitude | position for every worker, and the load with respect to a holding | maintenance thing. In the above-described processing, the load is calculated using the load based on the posture of the worker and the load based on the holding object that the worker holds during the process. However, the present invention is not limited to this, and either one of them is calculated. Only the load may be used.

  By the workload estimation process described above, for example, resetting can be performed so that the load with other workers is equal, and by outputting a changed work schedule that reduces the total load bias of multiple workers It is possible to support the creation of an appropriate process plan.

<Examples of various tables>
Here, various table examples in the present embodiment will be described with reference to the drawings.

<Work table 15-1>
FIG. 5 is a diagram illustrating an example of a work table. The items of the work table 15-1 shown in the example of FIG. 5 include, for example, “Time”, “head position (X, Y, Z)”, “right hand position (X, Y, Z)”, “right type”, “Right hand weight”, “Left hand position (X, Y, Z)”, “Left type”, “Left hand weight”, “Waist position (X, Y, Z)”, “Right foot position (X, Y, Z)” , “Left foot position (X, Y, Z)”, etc., but is not limited thereto. Other items of the work table 15-1 include, for example, other parts of the body (including joints) such as the neck, back, fingers, wrists, elbows, and knees, but are not limited thereto. . In this embodiment, a work table is set using at least one part with respect to the worker's body, and load information based on the posture, a holding object, and the like is set for the set part.

  “Time” indicates an elapsed time from the start of a preset process operation. “Head position (X, Y, Z)” indicates the three-dimensional coordinates of the vertex or the center of gravity of the operator's head. “Right-hand position (X, Y, Z)” indicates the three-dimensional coordinates of the center of gravity of the right hand. “Right type” indicates identification information (held object ID) for identifying an object held in the right hand. “Right hand weight” indicates the weight of the right hand by the holding object.

  Similarly, “left hand position (X, Y, Z)” is the three-dimensional coordinate of the center of gravity of the left hand, “left type” is identification information (holding object ID) for identifying an object held in the left hand, “ “Left hand weight” indicates the weight of the left hand by the holding object. “Waist position (X, Y, Z)” indicates the three-dimensional coordinates of the center of gravity of the waist. “Right foot position (X, Y, Z)” indicates the three-dimensional coordinates of the center of gravity of the right foot. “Left foot position (X, Y, Z)” indicates the three-dimensional coordinates of the center of gravity of the left foot.

  In addition, although the weight mentioned above is set based on the weight (g) of a holding | maintenance thing, for example, it is not limited to this. For example, when a 1000 g holding object is held with one hand (for example, the right hand), the weight of the held one hand is 1000.0. Further, when a 1000 g holding object is held with both hands, the weight of the held right hand and left hand is 500.0 by equally dividing the left and right hands.

  Here, FIG. 6 is a diagram for explaining the setting contents of the coordinates. In the present embodiment, as shown in the example of FIG. 6A, as the initial state of the process, the position of the head 31 of the worker 30 is set to the center (X, Y) = (0, 0) of the XY plane, and the ground The height (height) is set as Z for the position of the top of the head. Here, for example, as shown in FIG. 6B, when the operator 30 is twisted 90 degrees to the left from the initial state or has a holding object, the positions of the right hand 32 and the left hand 33 move. . Therefore, in the present embodiment, the coordinates of each part of the body such as the head 31, the right hand 32, and the left hand 32 are stored in the work table 15-1 for each unit time of each work.

  Here, FIG. 5 shows an example of work performed by a certain worker in 8 seconds. Specifically, the worker bends forward (Time = 1) from the initial state at the start of work (Time = 0), and holds the cover (holding object ID = 1) with the left and right hands (Time = 2). ) While holding the cover, lift it (Time = 3) and place it on the desk in front (Time = 4). Further, the operator twists his body 90 degrees on the left side (Time = 5), holds the power tool (holding object ID = 3) on the right hand, and holds the bolt (holding object ID = 2) on the left hand (Time = 6). Facing (Time = 7) and tightening the bolt (Time = 8). Note that the type and contents of work are not limited to this.

  Thus, the work table 15-1 is created and stored for each work, and the load is calculated using this information.

<Load table for each posture 15-2>
FIG. 7 is a diagram illustrating an example of a load table for each posture. The posture-by-posture load table 15-2 is data indicating the correspondence between the posture of the worker and the load. The items in the posture-by-posture load table 15-2 shown in FIG. 7 include, for example, “posture ID” which is identification information for identifying the posture, head position (X, Y, Z), and “right hand position (X, Y). , Z) "," Right hand load factor "," Left hand position (X, Y, Z) "," Left hand load factor "," Waist position (X, Y, Z) "," Right foot (X, Y, Z) " ”,“ Left foot (X, Y, Z) ”,...,“ Load factor ”, etc., but are not limited thereto.

  In the example of FIG. 7, the load factor for each right hand and left hand is set as an example of the load information. However, the load factor is not limited to this, and the load factor for the left and right feet, the waist, etc. . In the example of FIG. 7, an overall load factor corresponding to the posture ID is set as an example of the load information.

  The posture ID shown in FIG. 7 corresponds to the posture No. shown in FIG. 4 described above, for example. In the present embodiment, the three-dimensional coordinates of each part of the body based on preset posture information corresponding to the posture ID, for example, such as the operator standing, bending, sitting, twisting, walking (moving), etc. The load factor is set in the per-posture load table 15-2.

  The posture load table 15-2 may continuously store posture data in which postures are changed little by little, for example. For example, the posture-by-posture load table 15-2 continuously stores the posture data of each stage from the posture in the upright state to the posture in which the seat is gradually seated. Accordingly, for example, in the process of S16 shown in FIG. 4 described above, the posture data is obtained by comparing the approximation rate with respect to the previous posture and the approximation rate with respect to the current posture with respect to the posture of the worker acquired from the work table. It is possible to determine whether or not is gradually approximating.

<Load coefficient table 15-3 for each holding>
FIG. 8 is a diagram illustrating an example of the load coefficient table for each holding object. The load factor table 15-3 for each holding object is data indicating the correspondence between the holding object and the load. The items in the holding object table 15-3 shown in FIG. 8 include, for example, “holding object ID”, “shape”, and “size (X, Y, Z), which are identification information for identifying an object held by the worker. ”,“ Material ”,“ load coefficient ”, etc., but is not limited to this, and information such as weight may be included.

  As the shape, for example, a rough shape of an object (for example, a dome shape, a cylinder, a cone, or the like) is set. For example, the size of an object (for example, vertical (X), horizontal (Y), height (Z), etc.) is set as the size. As the material, for example, the main material of the object (for example, Fiber Reinforced Plastics (FRP), metal, etc.) is set. As the load coefficient, load information corresponding to the shape, size, and material of the object described above is set. For example, the load coefficient for the object may be set to at least one of “shape”, “size (X, Y, Z)”, and “material” shown in FIG. .

  Since the holding objects have different ease of holding depending on the shape, size, material, etc., set the load coefficient for each holding object and calculate the worker's load using the load coefficient. Can be set appropriately. Note that the holding object is not limited to an object held in the hand of an operator, and includes, for example, an object to be worn on the hand, head, waist, or the like, or an object to be moved by applying force.

<Worker load table 15-4>
FIG. 9 is a diagram illustrating an example of the worker load table. The items in the worker load table 15-4 shown in FIG. 9 include, for example, “Time”, “head position (X, Y, Z)”, “right hand position (X, Y, Z)”, “right type”, “Right hand load”, “Left hand position (X, Y, Z)”, “Left type”, “Left hand load”, “Waist position (X, Y, Z)”, “Right foot position (X, Y, Z)” , “Left foot position (X, Y, Z)”, “posture ID”, “overall load”, etc., but are not limited thereto.

  The worker load table 15-4 includes the posture (three-dimensional coordinates) of each part of the worker's body and a predetermined part (for example, for each predetermined time interval (for example, one second) of the process work corresponding to the work content. , Right hand, left hand) and the load value of each part as a whole. The total load is calculated by the load calculation means 13. In addition, the posture ID stores the posture ID that is most approximate to the posture at the time of work (time point) or the data ID of the same posture data from the above-described posture-by-posture load table 15-2.

  In the present embodiment, the load calculation unit 13-3 for each worker adds up the total load values obtained at predetermined time intervals as shown in FIG. Total load) can be acquired, and the burden on each worker can be properly grasped.

<Specific examples of load acquisition>
Next, a specific example of load acquisition in the present embodiment will be described. FIG. 10 is a diagram illustrating an example of the posture of the worker. FIG. 11 is a diagram illustrating a specific example of load calculation.

  In the present embodiment, as shown in FIG. 10, based on the process plan set by the input unit 11, the operation (posture) of the worker 30 for each predetermined time with respect to the work content created by the work creation unit 12. Is simulated. Further, in the present embodiment, the load calculating unit 12 acquires a change in the operation (posture), the presence / absence of a holding object, a shape, and the like, and acquires an appropriate work load for each worker.

  For example, in the present embodiment, the load calculation unit 13 can set different load factors, for example, in postures A to C as shown in FIG. The load calculation means 13 sets the load factor corresponding to the posture of the worker (three-dimensional coordinates of each part of the body) and then the weight of the object (for example, part or luggage) held in the posture. By multiplying the load coefficient, etc., the worker's load is quantified.

  In the example of FIG. 11, the load factor of posture A (standing position) = 1.0, the load factor of posture B (middle waist) = 1.4, and the load factor of posture C (twist) = 1. Although it is set as 2, the setting of the load factor is not limited to this.

  Moreover, in this embodiment, the load with respect to the holding | maintenance 40 which an operator hold | maintains is set on a process. For example, when the holding object 40 is the part A, the load is calculated using the weight and the load coefficient for the part A. As described above, the load coefficient may be set to at least one of the shape, size, and material, for example. In the example of FIG. 11, when the material of the part A is plastic, the load coefficient is 1.0, and when the shape is a tool, the load coefficient is 1.5. However, the present invention is not limited to this. .

  In other words, the load calculating means 13 sets the load factor for each posture of the worker, and sets the weight of the holding material and the load coefficient necessary for the process to simulate the work of the worker. Calculate the load. In this case, as shown in FIG. 11, for example, the load calculation unit 13 can calculate “load = load factor based on the posture of the worker × weight × load coefficient based on the holding object”, but is not limited thereto. It is not something. For example, when a load coefficient including weight is set in the above-described load coefficient table 15-3 for each holding object, the load factor corresponding to the posture of the worker and the load coefficient may be multiplied.

  Further, the load calculation means 13 calculates the assembly load for each part by totaling the loads calculated for each holding object held per unit time, and further totals the load for each cycle of the process for each worker. Get the load. Based on the acquired work load, the work creation means 12 reassigns the assembled parts so that the load is equal to other workers, or reassigns the process or assigned work to the worker. It can be performed. Thus, in this embodiment, the workload for each worker can be estimated appropriately, and creation of an appropriate process plan can be supported from the estimated workload.

  In the processing described above, the load is acquired using the load corresponding to the posture of the worker and the holding object held by the worker during the process, but the present invention is not limited to this, and only one of the loads is used. May be. Further, the calculation of the load described above is not limited to the above-described content, and for example, the load may be calculated based on the force applied to each part (muscle) when holding the load. Note that the muscle strength varies depending on the sex and age of the worker. For this reason, in this embodiment, for example, the worker information such as gender and age described above and the load corresponding to the worker information are set, and the workload for each worker is more appropriately set using the set load. It can also be calculated.

  As described above, in this embodiment, the work load can be estimated appropriately. Specifically, a simulation is performed before actually moving the production line, and the work load (for example, the cause of fatigue) is estimated for each worker by estimating the work load from the posture of the worker and the holding material to be transported. Can be quantified. Therefore, this embodiment can create a process plan for equalizing work time on the basis of a digitized load. In addition, according to the present embodiment, in order to equalize the process with the work time considering the load for each worker without equalizing with a simple time, scheduling such as break time and worker change is appropriately planned. Can do. Therefore, in this embodiment, creation of an appropriate process plan can be supported.

  Each embodiment has been described in detail above. However, the present invention is not limited to the specific embodiment, and various modifications and changes other than the above-described modification are possible within the scope described in the claims. .

In addition, the following additional remarks are disclosed regarding the above Example.
(Appendix 1)
Acquire data indicating the temporal change in the posture of the worker according to the work or data indicating the work held by the worker according to the work,
The load corresponding to each posture of the worker included in the acquired data or the acquired the data with reference to the data indicating the correspondence relationship between the posture of the worker and the load or the data indicating the correspondence relationship between the holding object and the load Identify the load corresponding to the worker's holdings included in the data,
Aggregating the identified loads to calculate the total load of the worker in the work,
A workload estimation program that causes a computer to execute processing.
(Appendix 2)
Acquiring work schedule data for each of a plurality of workers, including information on the temporal changes in worker attitudes or the information held by workers,
The load or acquisition corresponding to each posture of the worker included in the acquired work schedule data with reference to the data indicating the correspondence relationship between the posture of the worker and the load or the data indicating the correspondence relationship between the holding object and the load Identifying the load corresponding to the worker's holdings contained in the data,
Summing up the identified loads, for each of the plurality of workers, calculating the total load of the workers according to the corresponding work schedule,
Based on the calculated total load of the plurality of workers, the work schedule for at least one of the plurality of workers is changed, and the change that reduces the total load bias of the plurality of workers Output work schedule,
A workload estimation program that causes a computer to execute processing.
(Appendix 3)
The workload estimation program according to appendix 1 or 2, wherein the load corresponding to the posture is a load corresponding to a position coordinate of at least one part of the worker.
(Appendix 4)
The load according to any one of appendices 1 to 3, wherein the load corresponding to the holding object is a load corresponding to at least one of the shape, size, and material of the holding object. (Appendix 5)
The load corresponding to the posture is specified as follows:
5. The data according to any one of appendices 1 to 4, characterized in that it is specified from data indicating a correspondence relationship between the posture of the worker and a load using a load with respect to a posture that is closest to the posture of the worker. Workload estimation program.
(Appendix 6)
6. The work load estimation program according to any one of appendices 1 to 5, wherein a load is calculated by multiplying a load corresponding to the posture and a load corresponding to the holding object.
(Appendix 7)
Information processing device
Acquire data indicating the temporal change in the posture of the worker according to the work or data indicating the work held by the worker according to the work,
The load corresponding to each posture of the worker included in the acquired data or the acquired the data with reference to the data indicating the correspondence relationship between the posture of the worker and the load or the data indicating the correspondence relationship between the holding and the load Identify the load corresponding to the worker's holdings included in the data,
A work load estimation method, comprising: summing up the specified loads and calculating a total load of the worker in the work.
(Appendix 8)
Information processing device
Acquiring work schedule data for each of a plurality of workers, including information on the temporal changes in worker attitudes or the information held by workers,
The load or acquisition corresponding to each posture of the worker included in the acquired work schedule data with reference to the data indicating the correspondence relationship between the posture of the worker and the load or the data indicating the correspondence relationship between the holding object and the load Identifying the load corresponding to the worker's holdings contained in the data,
Summing up the identified loads, for each of the plurality of workers, calculating the total load of the workers according to the corresponding work schedule,
Based on the calculated total load of the plurality of workers, the work schedule for at least one of the plurality of workers is changed, and the change that reduces the total load bias of the plurality of workers A workload estimation method characterized by outputting a work schedule.
(Appendix 9)
Data indicating the temporal change in the posture of the worker according to the work or data indicating the worker's holdings according to the work, and data or holdings indicating the correspondence between the posture of the worker and the load Storage means for storing data indicating a correspondence relationship with the load;
Referring to the storage means, specify a load corresponding to each posture of the worker included in the acquired data or a load corresponding to a worker's holding included in the acquired data, and the specified load An information processing apparatus comprising: a load calculating unit that calculates and calculates a total load of the worker in the work.
(Appendix 10)
Work creation means for each work schedule data of a plurality of workers, including information on the temporal change of workers' posture or the work held by workers,
Storage means for storing data indicating the correspondence relationship between the posture of the worker and the load or data indicating the correspondence relationship between the holding object and the load;
Referring to the storage means, the load corresponding to each posture of the worker included in the work schedule data acquired by the work creation means or the load corresponding to the worker's holdings included in the acquired data is specified. And a load calculating means for calculating the total load of the worker according to the corresponding work schedule for each of the plurality of workers by totalizing the identified loads.
The work creation means changes a work schedule for at least one worker among the plurality of workers based on the total load of the plurality of workers calculated by the load calculation means, and An information processing apparatus that outputs a change work schedule in which a bias of a worker's total load is reduced.

DESCRIPTION OF SYMBOLS 10 Information processing apparatus 11 Input means 12 Work preparation means 13 Load calculation means 14 Display part 15 Storage means 21 Input device 22 Output device 23 Drive apparatus 24 Auxiliary storage device 25 Main storage device 26 CPU
27 Network connection device 28 Recording medium 30 Worker 31 Head 32 Right hand 33 Left hand 40

Claims (9)

Acquire data indicating the temporal change in the posture of the worker according to the work or data indicating the work held by the worker according to the work,
The load corresponding to each posture of the worker included in the acquired data or the acquired the data with reference to the data indicating the correspondence relationship between the posture of the worker and the load or the data indicating the correspondence relationship between the holding object and the load Identify the load corresponding to the worker's holdings included in the data,
Aggregating the identified loads to calculate the total load of the worker in the work,
A workload estimation program that causes a computer to execute processing. Acquiring work schedule data for each of a plurality of workers, including information on the temporal changes in worker attitudes or the information held by workers,
The load or acquisition corresponding to each posture of the worker included in the acquired work schedule data with reference to the data indicating the correspondence relationship between the posture of the worker and the load or the data indicating the correspondence relationship between the holding object and the load Identifying the load corresponding to the worker's holdings contained in the data,
Summing up the identified loads, for each of the plurality of workers, calculating the total load of the workers according to the corresponding work schedule,
Based on the calculated total load of the plurality of workers, the work schedule for at least one of the plurality of workers is changed, and the change that reduces the total load bias of the plurality of workers Output work schedule,
A workload estimation program that causes a computer to execute processing.   The work load estimation program according to claim 1, wherein the load corresponding to the posture is a load corresponding to a position coordinate of at least one part of the worker.   4. The load according to claim 1, wherein the load corresponding to the holding object is a load corresponding to at least one of the shape, size, and material of the holding object. 5. Workload estimation program. The load corresponding to the posture is specified as follows:
5. The method according to claim 1, wherein the identification is performed from data indicating a correspondence relationship between the posture of the worker and a load using a load with respect to a posture that is closest to the posture of the worker. Workload estimation program. Information processing device
Acquire data indicating the temporal change in the posture of the worker according to the work or data indicating the work held by the worker according to the work,
The load corresponding to each posture of the worker included in the acquired data or the acquired the data with reference to the data indicating the correspondence relationship between the posture of the worker and the load or the data indicating the correspondence relationship between the holding object and the load Identify the load corresponding to the worker's holdings included in the data,
A work load estimation method, comprising: summing up the specified loads and calculating a total load of the worker in the work. Information processing device
Acquiring work schedule data for each of a plurality of workers, including information on the temporal changes in worker attitudes or the information held by workers,
The load or acquisition corresponding to each posture of the worker included in the acquired work schedule data with reference to the data indicating the correspondence relationship between the posture of the worker and the load or the data indicating the correspondence relationship between the holding object and the load Identifying the load corresponding to the worker's holdings contained in the data,
Summing up the identified loads, for each of the plurality of workers, calculating the total load of the workers according to the corresponding work schedule,
Based on the calculated total load of the plurality of workers, the work schedule for at least one of the plurality of workers is changed, and the change that reduces the total load bias of the plurality of workers A workload estimation method characterized by outputting a work schedule. Data indicating the temporal change in the posture of the worker according to the work or data indicating the worker's holdings according to the work, and data or holdings indicating the correspondence between the posture of the worker and the load Storage means for storing data indicating a correspondence relationship with the load;
Referring to the storage means, specify a load corresponding to each posture of the worker included in the acquired data or a load corresponding to a worker's holding included in the acquired data, and the specified load An information processing apparatus comprising: a load calculating unit that calculates and calculates a total load of the worker in the work. Work creation means for each work schedule data of a plurality of workers, including information on the temporal change of workers' posture or the work held by workers,
Storage means for storing data indicating the correspondence relationship between the posture of the worker and the load or data indicating the correspondence relationship between the holding object and the load;
Referring to the storage means, the load corresponding to each posture of the worker included in the work schedule data acquired by the work creation means or the load corresponding to the worker's holdings included in the acquired data is specified. And a load calculating means for calculating the total load of the worker according to the corresponding work schedule for each of the plurality of workers by totalizing the identified loads.
The work creation means changes a work schedule for at least one worker among the plurality of workers based on the total load of the plurality of workers calculated by the load calculation means, and An information processing apparatus that outputs a change work schedule in which a bias of a worker's total load is reduced.

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