JP2017010277A - Work analysis system and work analysis method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work analysis system capable of identifying work processes largely varying in work time and of work analysis of the identified work process.SOLUTION: A work analysis system S performs a work analysis on the basis of work video data showing work vide of each work process in line work. A work analysis device 10 calculates work time of each work process from each work video by dividing the time every cycle, and identifies a cycle in which shortest work time is calculated in each work process and a cycle in which longest work time is calculated. Then, a work process where a difference between the longest work time and the shortest work time becomes a largest value is identified from a plurality of work processes, and an analysis with the specific work process identified as an analysis target is performed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a work analysis system and a work analysis method, and in particular, in a line work composed of a plurality of continuous work processes, it is possible to perform a work analysis based on a work video obtained by photographing work contents of each work process. The present invention relates to a work analysis system and a work analysis method.

Conventionally, the work contents of each work process were photographed for the purpose of shortening the work time at the production site, saving labor, and reducing costs by "visualizing" the movement and time of people, machines and things on the production line. 2. Description of the Related Art A work analysis system capable of displaying a work video and analyzing the operation of each work process is known.
According to the work analysis system, it is possible to organize work processes based on analysis results using work moving images and to create work standards with high accuracy.

For example, the work image management system described in Patent Document 1 is for performing work analysis while confirming the video of each work process in a production line, and analyzing defect of a product, design change, improvement of production equipment, It can be used for monitoring the work process status.
Further, the work analysis system described in Patent Document 2 can perform an operation analysis of each work process based on a work video photographed by a photographing camera, and further automatically calculate a work standard time of each work process. It is a system that can do.

JP 2003-150230 A JP 2002-310617 A

In general, in the above work analysis system, a work video obtained by photographing the work contents of each work process is displayed on a display screen, and a user operation is accepted and the work time of each work process in the line work and each work element in the work process. The work element time can be calculated.
Then, after displaying the pile table on the display screen, it is possible to receive user operations and organize work processes in order to shorten the cycle time and increase the line knitting efficiency.

By the way, among the work processes, there are work processes that have a large work time variation because they are highly difficult for the operator, and work processes that have a small work time variation because the work is less difficult. Therefore, a more detailed analysis is required for the work process in which the variation of the former work time is large.
However, in the above work analysis system, when organizing work processes on the display screen, it is not possible to identify work processes with large variations in work time from all work processes. Could not be analyzed.
Therefore, it is possible to create a work standard with higher accuracy by identifying work processes with large variations in work time from multiple work processes in line work and analyzing the specified work processes in detail. A work analysis system was required.

In addition, in the above work analysis system, in order to shoot a work video under the same work conditions, a shooting camera is installed for each work process, and the start time of each work process is taken together to shoot each work process. The work contents are recorded on the same time axis.
However, as a conventional method for determining the start time of each work process, when the analyst confirms the work video on the display screen and finds the operation at the start time, it is determined by clicking the mouse. It was a thing. For this reason, not only an extra burden is placed on the analyst, but also there is a possibility that the starting point cannot be accurately set between the respective work steps.
Although a method of matching the shooting start time of the shooting camera as the start time of the work process is conceivable, it is difficult to set the set times of all the shooting cameras to the same time.

The present invention has been made in view of the above problems, and an object of the present invention is to perform work analysis using work videos of each work process in line work, and based on work analysis results. An object of the present invention is to provide a work analysis system and a work analysis method capable of organizing work processes and creating a work standard with higher accuracy.
Another object of the present invention is to provide a work analysis system and work capable of identifying work processes with large variations in work time and analyzing the identified work processes in more detail when organizing work processes. It is to provide an analysis method.
Another object of the present invention is to accurately match the start time of each work process without imposing a burden on the user analyst when shooting a work video of each work process under the same work conditions. Is to provide a simple work analysis system and work analysis method.

  According to the work analysis system of the present invention, in the line work composed of a plurality of continuous work processes, the subject is a photographing apparatus that photographs the work content of each of the work processes and records a work video, and the photographing apparatus And a work analysis device, which is connected through a network, obtains work video data indicating the work video, and analyzes the work process in the line work based on the work video data In the system, the photographing apparatus photographs at least two cycles of the work content of each work process, records the work moving image of at least two cycles for each work process, and performs the work analysis. The apparatus includes a data storage unit that stores each of the work moving image data acquired from the photographing apparatus separately for each cycle; A work time calculation unit that calculates the work time of the work process for each cycle based on work video data, the cycle in which the shortest work time is calculated in each work process, and the longest work time A cycle identification unit that identifies the cycle that has been performed, and a work process identification unit that identifies the work process having the largest difference between the longest work time and the shortest work time among the plurality of work processes; And an analysis execution unit that performs an analysis on the specified specific work process as an analysis target.

In general, when performing work analysis using work videos of each work process in line work and organizing work processes based on the work analysis results, the difference between the longest work time and the shortest work time is the largest value. The resulting work process is a work process that has a high degree of difficulty for the operator, and can be said to be a work process that requires more detailed analysis.
In addition, the work process in which the difference is the smallest value is a work process that has a low difficulty level for the worker, and for example, if the work time is within the cycle time, a work process that is not particularly required to be reviewed. I can say that.
Therefore, with the work analysis system configured as described above, the work time of each work process is calculated for each cycle from the recorded work videos of multiple cycles, and the longest work time and the shortest work time among the multiple work processes. It is possible to specify the work process having the largest difference from the above and to perform a more detailed analysis with the specified specific work process as an analysis target. As a result, a work standard with higher accuracy can be created.

At this time, it further includes a screen display unit that displays the work video indicated by the work video data for each work process on a display screen, and the analysis execution unit is displayed after receiving an input of a user operation. It is preferable to calculate an effective operation time indicating a time during which a human or machine recorded in the work moving image performs an effective operation on the work content, and an invalid operation time indicating a time during which an invalid operation is performed.
With the above configuration, the effective operation time and the invalid operation time of the specific work process are calculated after displaying the work video of the specific work process on the display screen with the specific work process having the largest variation in the work time being analyzed. be able to.
Therefore, based on the analysis results of the effective operation time and the invalid operation time, it is possible to newly calculate a highly accurate operation time for the specific operation process.

At this time, the work time calculation unit accepts an input of a user operation, divides the displayed work video for each work element, creates a work element video, and the work element of the work element from the work element video The time is calculated, and the analysis execution unit receives an input of a user operation, and an effective operation time indicating the time when the effective operation is performed on the work element, and an invalid operation indicating the time when the invalid operation is performed It is good to calculate time and time respectively.
With the above configuration, after displaying the work element animation of the specific work process on the display screen, the effective operation time and the invalid work element time are calculated for the work element time of each work element in the specific work process. be able to.
Therefore, based on the analysis result of the effective operation time and the invalid operation time in the work element, it is possible to newly calculate the work time with higher accuracy for the specific work process.

At this time, an input of a user operation is received, the predetermined work element is specified from the plurality of work elements in the specific work process, and the specified specific work element is separated from the specific work process by the work process. It is preferable to further include a process knitting unit that moves the process.
With the above configuration, for example, a work element having a particularly large variation in work element time can be specified as a specific work element in the specific work process, and the specific work element can be moved to another work process. As the destination work process, for example, a work process with small work time variation and shorter work time than the cycle time is preferable.

At this time, the screen display unit simultaneously displays at least two of the work videos divided for each work process as a work analysis screen, and the analysis execution unit performs user operation on the work analysis screen. It is preferable that an input is received and an analysis is performed on a plurality of work processes including the specific work process.
With the above configuration, for example, it is possible to perform analysis while comparing the specific work process and the work processes before and after the specific work process on the same display screen, and the work process can be easily organized.

At this time, the photographing device records the work moving image including sound generated during work, the work analysis device stores setting sound data related to preset setting sound in the storage unit, and the work moving image. A sound extraction unit that extracts the sound generated during work, a sound determination unit that determines whether the extracted sound matches the set sound based on the set sound data, and the work video It is preferable to further include a start time determination unit that determines a start time of the work process with reference to a generation time of the sound matched with the set sound on the time axis set for the above.
With the above configuration, when shooting a work video of each work process under the same work conditions, it is possible to accurately match the start time of each work process without imposing a burden on an analyst serving as a user.

  Further, in a line work composed of a plurality of continuous work processes, the work content of each of the work processes is photographed for at least two cycles or more, and a work video of at least two cycles or more is recorded for each of the work processes. A work analysis method in which a computer connected to an apparatus through a network acquires work video data indicating the work video and performs processing for analyzing the work process in the line work based on the work video data. The computer having a data storage unit that stores each work moving image data acquired from the photographing apparatus separately for each cycle, the work time of the work process based on each stored work moving image data Working time calculation process for calculating the time by cycle, and the shortest work in each of the above-mentioned working steps. The difference between the longest working time and the shortest working time is the largest among the cycle identifying process for identifying the cycle for which the time is calculated and the cycle for which the longest working time is calculated, and the plurality of working steps. It is also possible to realize a work analysis method for executing a work process specifying process for specifying the work process to be a value and an analysis execution process for performing an analysis with the specified specific work process as an analysis target.

According to the work analysis system and the work analysis method of the present invention, it is possible to perform work analysis using work videos of each work process in line work, and organize work processes based on the work analysis results. A highly accurate work standard can be created.
Further, when organizing work processes, it is possible to identify work processes with large variations in work time, and to analyze the specified work processes in more detail.
In addition, when shooting a work video of each work process under the same work conditions, the start time of each work process can be accurately adjusted without imposing a burden on an analyst serving as a user.

It is a lineblock diagram of the whole work analysis system concerning this embodiment. It is a hardware block diagram of a work analysis device. It is a software block diagram of a work analysis system. It is a figure which shows an example of work element list data. It is a figure which shows an example of a work analysis screen. It is a figure which shows an example of a work process organization screen. It is a figure explaining the procedure of the organization of the work process by a pile-up table (the 1). It is a figure explaining the procedure of the organization of the work process by a pile-up table (the 2). It is a figure explaining the method of determining the start time of a work process. It is a flow figure showing an example of processing of a work analysis method concerning this embodiment.

Embodiments according to the present invention will be described below with reference to FIGS.
The present embodiment is a work analysis system that performs work analysis based on work video data indicating a work video of each work process in line work, and the work analysis device calculates the work time of each work process from each work video for each cycle. The cycle in which the shortest work time is calculated in each work process and the cycle in which the longest work time is calculated are identified, and the longest work time and the shortest work are selected from multiple work processes. The present invention relates to an invention characterized in that a work process having the largest difference from time is specified, and an analysis is performed on the specified specific work process as an analysis target.

The overall configuration of the work analysis system S of the present embodiment is shown in FIG.
The work analysis system S is connected to a plurality of photographing apparatuses 1 that record work videos by photographing work contents of each work process in a line work, and a plurality of photographing apparatuses 1 through a network. A work analysis device 10 that acquires work video data, analyzes and organizes work processes in line work based on the work video data, and outputs work standard data indicating the contents of the work standard based on the analysis and organization results; , Mainly consists of.
Here, the line work refers to an assembly of a series of work processes, and includes, for example, an “assembly line”. The work process refers to an assembly of a series of work elements, such as “engine assembly”, “bumper attachment”, “tire attachment”, and the like.
The work element indicates an assembly of a series of operations, and includes, for example, “preparing a bush”, “checking a bush set position”, “setting a bush”, “assembling to a vehicle body”, and the like. The operation indicates a minimum unit when the work is subdivided.

The photographing apparatus 1 is a video camera, for example, and is installed at a position where the work contents of each work process can be photographed in the line work, as shown in FIG. Then, by photographing the start time of each work process together, it is possible to record a work video of each work process on the same time axis.
The imaging device 1 captures a plurality of cycles (for example, 10 cycles) of the work content of each work process, and records a plurality of work videos for each work process. Then, work moving image data indicating a work moving image of each work process is created separately for each cycle, and the data is transmitted to the work analysis apparatus 10.

The work analysis device 10 is a computer used by an analyst who performs work analysis, displays a work video indicated by work video data on a display screen, receives a user operation, and a work time of each work process; After calculating the work element time of each work element in the work process, displaying a pile table on the display screen, receiving user operations, analyzing and organizing the work process, and outputting work standard data is there.
The work analysis apparatus 10 can perform data communication with the photographing apparatus 1 and store work moving image data transmitted from the photographing apparatus 1 for each work process and for each cycle.
The work analysis apparatus 10 creates work standard data based on the results of work analysis and work organization based on the work video data, and outputs and displays the work standard data on the display screen. can do.

A hardware configuration of the work analysis apparatus 10 is shown in FIG.
The work analysis device 10 is a computer that includes a CPU as a data calculation / control processing device, ROM, RAM, and HDD as storage devices, and a communication interface that transmits and receives information data through a home network or the Internet. is there.
The work analysis apparatus 10 also includes a display device that displays information on characters or images displayed in a predetermined format, an input device that is operated by a user when a predetermined command is input to the CPU, and a storage such as an external hard disk A medium device. The work analysis apparatus 10 may further include a printing apparatus that outputs character or image information.
The photographing apparatus 1 is also a computer having a similar hardware configuration.

  The ROM, HDD, and external storage device of the work analysis apparatus 10 store a work analysis program in addition to the main program that performs the necessary functions as a computer, as shown in FIG. By being executed, the function of the work analysis apparatus 10 is exhibited.

The software configuration of the work analysis apparatus 10 is shown in FIG.
The work analysis device 10 will be described in terms of functions. The data storage unit 11 stores various programs and various data, and the data acquisition unit 12 acquires work moving image data of each work process from each photographing device 1 for each cycle. And the screen display unit 13 that displays the work video indicated by each acquired work video data for each cycle on the display screen, and calculates the work time of the work process for each cycle based on each work video data. The work time calculation unit 14, the cycle specifying unit 15 that identifies the cycle in which the shortest work time is calculated in each work process, and the cycle in which the longest work time is calculated, and the longest of the plurality of work processes The work process specifying unit 16 that specifies the work process having the largest difference between the work time and the shortest work time, and the specified specific work process as the analysis target An analysis execution unit 17 that performs the analysis, a process organization unit 18 that identifies a predetermined work element from a plurality of work elements in a specific work process, and moves the specified specific work element to another work process; A data output unit 19 that outputs work standard data based on the analysis result and the organization result is provided as a main component.
These are constituted by a CPU, ROM, RAM, HDD, communication interface, various programs, and the like.

The data storage unit 11 stores work moving image data acquired from the photographing apparatus 1, work element list data shown in FIG. 4, and work standard data.
The data storage unit 11 may be configured to hold and store various programs and various information data, or read various programs and various information data from a data server (not shown) and temporarily store them. It may be configured to be kept.

The screen display unit 13 outputs and displays a work analysis screen 30 shown in FIG. 5 and a process organization screen 40 shown in FIG. 6 on the display of the work analysis apparatus 10.
The work time calculation unit 14 accepts a user operation and calculates the work time of each work process from the work video displayed on the work analysis screen 30 in FIG. 5, and also divides the work video into work elements for each work element. After creating a video, the work element time of each work element is calculated from the work element video.

The analysis execution unit 17 receives an input of a user operation, and from the work video displayed on the work analysis screen 30 in FIG. 5, an effective operation time indicating a time during which a human or machine has performed an effective operation on the work content And an invalid operation time indicating a time during which the invalid operation has been performed. In addition, an effective operation time indicating a time during which an effective operation is performed on the work element and an invalid operation time indicating a time during which an invalid operation is performed are calculated from the displayed work element moving image.
Therefore, based on the analysis results of the effective operation time and the invalid operation time, it is possible to newly calculate a highly accurate operation time for a specific operation process.

Further, the analysis execution unit 17 receives a user operation input on the work analysis screen 30 in FIG. 5 and calculates the work standard time (work element standard time) by adding the rating rate to the effective operation time. Therefore, based on the analysis result, a work standard time that is more accurate than the work time can be calculated.
Here, the rating rate is a numerical value for grading or digitizing the target object based on a predetermined standard, for example, whether or not the worker displayed in the work video is mature This is an evaluation value for evaluating whether or not the user is used to work.
The standard work time is the time required for a mature worker who has aptitude for the job, has the necessary margin under the prescribed work conditions, and performs the work at a normal work pace. It is. The work standard time is generally calculated by integrating the rating rate with the effective operation time.
If the analyst confirms the work video and, for example, determines that the worker in the work video is a mature worker and is performing work in a relatively fast work space, the rating rate is 100% or more. Set to a higher value.

After the execution of the work time calculation unit 14 or the analysis execution unit 17, the process organization unit 18 receives input of a user operation on the process organization screen 40 in FIG. 6, and from among a plurality of work elements in a predetermined work process. A predetermined work element is specified, and the specified specific work element is moved to another work process.
For example, it is possible to identify a work element having a large work element time variation in a work process having a large work time variation, and to move the specific work element to another work process. For example, the work process at the destination is a work process in which the variation in work time is small and the work time is shorter than the cycle time.

  The imaging apparatus 1 will also be described in terms of functions. As shown in FIG. 3, in addition to storing various programs and various data, data storage for storing work moving image data for each work process and for each cycle. The main component includes a unit 2, a data creation unit 3 that creates work video data, and a data transmission unit 4 that sends the work video data to the work analysis device 10.

Next, work element list data stored in the work analysis apparatus 10 will be described in detail with reference to FIG.
The work element list data is a data table showing the detailed contents of each work element as a list in the work process, and the detailed contents of each work element are created and updated in response to an input of a user operation.
Specifically, the work element list data includes NO. For the work element of the work process of a predetermined cycle. (Number), work element (name), type, start, element time (work element time), valid time (valid operation time), invalid time (invalid operation time), rating (rating rate), standard time (standard element time) ) And divisions are associated with each other.
Here, the type is an item that is selected and input from the categories of “1: manual work”, “2: tool work”, and “3: machine work” for each work element.
The category is an item that is selected and input from the categories of “operation”, “semi-operation”, and “non-operation” for each work element. “Operating” indicates a state in which a human is working, “semi-operating” indicates a state in which the machine is operating, and “non-operating” indicates a waiting state in which neither a human nor a machine is operating.

  Next, the work analysis screen 30 and the process composition screen 40 displayed on the display of the work analysis apparatus 10 will be described in detail with reference to FIGS.

As shown in FIG. 5, the work analysis screen 30 mainly displays the contents of the work video indicated by the work video data and the contents of the work element list indicated by the work element list data. It is a display screen for performing operation | movement analysis of each work process in response to receiving.
A plurality of the contents of the work moving image are displayed on the moving image windows 31 to 35 provided in the upper half of the work analysis screen 30 for each work process at the same time.
For example, when the work analysis screen 30 is viewed, a work video of the work process 1 “engine assembly” being analyzed is displayed on the video window 31 provided in the upper left portion of the display screen. In addition, on the four moving image windows 32 to 35 provided in the upper right part of the display screen, work process 2 “bumper attachment”, work process 3 “tire attachment”, work process 4 “sheet attachment”, work process 5 are sequentially arranged. “Door installation” work video is displayed.

The contents of the work element list are displayed on a work element list window 36 provided in the lower left part of the work analysis screen 30.
For example, when the work element list window 36 is viewed, an input of a user operation is accepted, and NO. “1”, work element “prepare bush”, type “1: manual work”, start “1.00 (second)”, element time “4.00 (second)”, effective time “4.00 (second)” ”, Invalid time“ 0.00 (seconds) ”, rating“ 150 (%) ”, standard time“ 6.00 (seconds) ”, and classification“ operation ”.

A cycle number display tab 37 indicating the number of cycles of the work process is provided below the work element list window 36 in the work analysis screen 30, and “1 cycle” is displayed for the work process 1. .
Also, a lower part than the work element list window 36 is provided with a total time display tab 38 indicating the work time, effective operation time, invalid operation time, average rating value, and standard time of the work process. It is automatically counted based on the input result.

Although detailed explanation is omitted, an analysis of the operation of the work analysis system 1 is performed by the user analyst confirming the contents of the work video and performing a mouse click operation and a keyboard input operation. The work time and work element time of the work process are calculated for each cycle.
In addition, the work analysis system 1 can receive a user's input operation, calculate a valid operation time and an invalid operation time for each cycle, and obtain a more accurate work time and work element time.
In addition, the work analysis system 1 can receive a rating evaluation input operation by a user, and can calculate a standard time and a standard element time for each cycle.

As shown in FIG. 6, the process organization screen 40 includes the content of the work video indicated by the work video data, the content of the work element list indicated by the work element list data, and the calculation result or analysis of the work time of each work process. It is a display screen for mainly displaying the contents of a piled-up graph of work elements created based on the results, and for accepting input of user operations and executing process organization.
The contents of the work moving image are displayed on a moving image window 41 provided in the upper left portion of the process organization screen 40, and a work process to be displayed can be selected in response to an input of a user operation.

The contents of the work element list are displayed on a work element list window 42 provided in the upper right part of the process organization screen 40.
For example, when the work element list window 42 is viewed, an input of a user operation is accepted, and the work element 1 of the work process 1 is determined as NO. “1”, group “1”, element number “1”, work element “prepare bush”, element time “4.00 (seconds)”, effective time “4.00 (seconds)”, and standard time “6. 00 (seconds) "is input.
On the work element list window 42, as a new item, a group indicating which work process belongs to the work element and an element number indicating the order in the work process are provided.

A cycle number display tab 43 indicating the number of cycles of the displayed work process (work element) is provided above the work element list window 42 in the process organization screen 40, and the cycle number “1” is selected. ing.
That is, the work elements of each work process can be displayed while being switched for each cycle.

The contents of the stacked graph of work elements are displayed on the stacked graph windows 44 and 45 provided in the lower right part of the process organization screen 40.
The stacking graph of work elements is a graph in which the horizontal axis indicates the work process and the vertical axis indicates the work time (work standard time) of each work process, and the work elements are stacked in order for each work process. Is a bar graph.
Here, for each work process, a cycle in which the shortest work time is calculated from a plurality of cycles is specified, and the work time of the cycle is displayed as a bar graph.
In addition, for each work process, the cycle in which the longest work time is calculated from a plurality of cycles is specified, and the work time of the cycle is displayed as the upper limit value of the error bar.

The pile graph window 44 shows the contents of a pile graph of work elements before execution of work process organization. The pile graph window 45 shows a pile of work elements after execution of work step organization. It shows the contents.
For example, when viewing the pile graph window 44, it is shown that the work process 3 “tire attachment” is the work process with the longest work time and the largest work time variation. It shows that the cycle time, which is the user's target time, is greatly exceeded.
Further, the pile graph window 45 shows that as a result of the knitting of the work process, the work time of the work process 3 “tire attachment” is shortened and the variation in the work time is reduced. And it shows that all work processes are below the cycle time.

  When the work standard data is output based on the contents displayed on the pile graph window 45 as a result of the organization of the work processes, the “work standard output” execution button 46 displayed in the lower left part of the process composition screen 40 is displayed. Is executed by being pressed by a user operation.

It should be noted that the organization of work processes may be executed upon receipt of an input from a user operation, or automatically executed so that all the work processes are less than the cycle time by a predetermined process organization program stored in advance. May be.
When automatically organizing the work process, for example, when the execution button 47 of the simulation setting “cycle analysis” displayed in the lower left portion of the process composition screen 40 is pressed by a user operation, good.

Next, a procedure for knitting work processes using a pile-up table will be described with reference to FIGS.
Specifically, an example in which process organization from work process 1 to work process 5 is performed in the line work “assembly” will be described.
Here, it is assumed that a work moving image of 10 cycles is recorded for each work process.

First, as shown in FIG. 7A, the work time and work element time of each work process are calculated for 10 cycles.
At this time, the effective operation time, the invalid operation time, the rating rate, and the standard time (standard element time) are not necessarily calculated for each work process.

Then, as shown in FIG. 7B, a pile graph of work elements in each work process is created based on the calculation result of the work time (work element time) of each work process.
Here, it can be seen that the working time of the working process 3 is the longest, exceeds the target cycle time, and the working time of the working process 3 has the largest variation.
In addition, it can be seen that the working times of the working process 1, the working process 2, the working process 4, and the working process 5 are lower than the cycle time, respectively, and the variation in the working time is small.
As a result, from among all the work processes, the work process 3 having the largest variation in work time is specified as an analysis target.

And as shown to Fig.8 (a), with respect to the specified operation | work process 3, the operation | movement analysis for shortening working time or making working time variation small is performed for every cycle.
Specifically, the effective operation time and the invalid operation time are calculated for each work element for the work process 3, the effective operation time is regarded as the work time, and the standard time is calculated by performing the rating. By adopting standard time instead of work time, a more accurate stacking graph of work elements is created.
As a result, it can be seen that the work time of the work element 3-4 and the work element 3-7 is shortened in the work process 3. Moreover, it turns out that the variation in the work time of the work process 3 became small.

Then, as shown in FIG. 8B, based on the analysis result of the work process, the work element of the specified work process 3 is moved to another work process, and the process is organized so that the cycle time is reduced.
Specifically, the work element 3-1 is moved from the work process 3 to the work process 2, and the work element 3-8 is moved to the work process 4.
In addition, for the work process 5, all work elements are moved to the work process 4.

As a result, it can be seen that in the line work “assembly”, all the work processes can be organized so as to be less than the target cycle time.
Further, as a result of the process organization, it can be seen that the 5 work processes can be reduced to 4 work processes, and the line organization efficiency was improved.
Furthermore, even when focusing on the cycle in which the longest working time is calculated in each work process and comparing it with the target cycle time, it can be seen that all the work processes are below the cycle time.

  As described above, in the work analysis system S, when organizing work processes in line work, it is possible to identify work processes with large variations in work time and analyze the identified work processes in more detail. A work standard with higher accuracy can be created.

<Determination of work process start time>
Next, a method for determining the start time of each work process will be described with reference to FIG.
In the work analysis system S, in order to shoot a work video of each work process under the same work conditions, the photographing apparatus 1 is installed for each work process, and each work process is started and photographed together. The work contents of the process are recorded on the same time axis.

Specifically, each imaging device 1 shoots a work moving image including sound generated during work, records it as work moving image data, and transmits the work moving image data to the work analysis device 10.
As shown in FIG. 3, the work analysis apparatus 10 stores set sound data related to a preset set sound in the data storage unit 11. And the sound extraction part 20 which extracts the sound which generate | occur | produces during work from the work animation containing a sound, and the sound determination part 21 which determines whether the extracted sound matches with a setting sound based on setting sound data. And a start time determination unit 22 for determining the start time of the work process with reference to the generation time of the sound that matches the set sound on the time axis set for the work video.
These are constituted by a CPU, ROM, RAM, HDD, communication interface, various programs, and the like.

  As a result, as shown in FIG. 9, when shooting a work video of each work process under the same work conditions, a setting sound is generated in accordance with the start time of the work process, so that the start time of each work process is accurately determined. Can be matched.

<Work analysis method>
Next, the process of the work analysis program executed by the work analysis system S will be described with reference to FIG.
FIG. 10 includes a data storage unit in which the work analysis apparatus 10 corresponding to a computer among the processes of the work analysis program according to the present embodiment stores work moving image data acquired from each photographing apparatus 1 for each cycle. The work time of the work process is calculated for each cycle based on each stored work video data, and the cycle in which the shortest work time is calculated in each work process and the cycle in which the longest work time is calculated Identify the work process that has the largest difference between the longest work time and the shortest work time from multiple work processes, and perform analysis for the specified specific work process FIG. 10 is a flowchart for executing a process of organizing work processes based on analysis results and then outputting work standard data.

  The work analysis program according to the present embodiment includes, as functional components of the work analysis apparatus 10 including the data storage unit 11, the data acquisition unit 12, the screen display unit 13, the work time calculation unit 14, and the like described above. A utility program in which various programs are aggregated to realize a cycle identification unit 15, a work process identification unit 16, an analysis execution unit 17, a process organization unit 18, and a data output unit 19, The CPU of the apparatus 10 executes this work analysis program.

In the work analysis process shown in FIG. 10, first, the data acquisition unit 12 of the work analysis device 10 records work movies recorded for a plurality of cycles from each photographing device 1 installed at a position where each work process can be photographed in line work. The process starts from step 01 (ST01) for acquiring data.
The work video data is data indicating a work video obtained by photographing the work content of each work process, and is stored in the data storage unit 11 after the data is acquired, and is stored separately for each work process and for each cycle. .

Next, in step 02, the screen display unit 13 displays a plurality of work videos indicated by the work video data for each work process on the display screen at the same time.
Specifically, the work analysis screen 30 of FIG. 5 is displayed on the display screen of the work analysis device 10.
In the work analysis screen 30, the contents of the work videos of the work processes 1 to 5 are displayed on the video windows 31 to 35, respectively, and the contents of the work element list are displayed as the work element list window 36, the cycle number display tab 37, and the like. Each is displayed on the total time display tab 38.

Next, in step 03, the work time calculation unit 14 receives an input of a user operation, and calculates the work time and work element time of each work process from the work video for each cycle.
Specifically, it accepts user operation input, creates a work element video by dividing the work video displayed on the work analysis screen of FIG. 5 into work elements, and then creates a work element from each work element video. Time is calculated for each cycle. Then, the work element time is totaled to calculate the work time for each cycle.
At this time, the analysis execution unit 17 may perform an analysis for calculating the effective operation time, the invalid operation time, the rating rate, and the standard time for each work process.

Next, in step 04, the screen display unit 13 displays the contents of the stacked graph of work elements on the display screen based on the calculation result of the work time of each work process.
Specifically, the process organization screen 40 of FIG. 6 is displayed on the display screen of the work analysis apparatus 10.
In the process organization screen 40, the contents of the work element list are displayed on the work element list window 42 and the cycle number display tab 43, respectively, and the contents of the pile graph of work elements are displayed on the pile graph window 44.

Next, in step 05, the cycle specifying unit 15 specifies the cycle in which the shortest work time is calculated and the cycle in which the longest work time is calculated in each work process.
Specifically, on the pile graph window 44 in FIG. 6, the cycle in which the shortest working time is calculated from a plurality of cycles is specified for the working steps 1 to 5, and the working time of the cycle is represented as a bar graph. indicate. In addition, for the work steps 1 to 5, the cycle in which the longest work time is calculated from a plurality of cycles is specified, and the work time of the cycle is displayed as the upper limit value of the error bar.

Next, in step 06, the work process specifying unit 16 specifies a work process in which the difference between the longest work time and the shortest work time is the largest among the plurality of work processes.
Specifically, on the stacked graph window 44 in FIG. 6, the work process 3 having the largest work time variation is identified from among the work processes 1 to 5.

Next, in step 07, the analysis execution unit 17 receives an input of a user operation and performs an analysis on a plurality of work processes including a specific work process as an analysis target.
Specifically, on the work analysis screen of FIG. 5, an input of a user operation is accepted, and an effective operation time and an invalid operation time are calculated for a plurality of work processes including the work process 3, respectively. Perform analysis to calculate rate and standard time respectively.

Next, in step 08, the process organization unit 18 receives an input of a user operation, specifies a predetermined work element from a plurality of work elements in a specific work process based on the analysis result, and specifies the specified A work element is moved from a specific work process to another work process.
Specifically, the process organization unit 18 accepts an input of a user operation on the stacked graph window 45 in FIG. 6, and the work element 3-1 from the work elements 3-1 to 3-8 in the work process 3. , 3-8, and the identified work element is moved to another work process.
Then, the contents of the stacked graph of the work elements after the process organization are displayed on the stacked graph window 45.

Finally, in step 09, the data output unit 19 of the work analysis apparatus 10 outputs work standard data indicating the contents of the work standard based on the analysis result and the organization result.
Specifically, on the process organization screen 40 in FIG. 6, when the “operation standard output” execution button 46 is pressed by a user operation, the operation standard data is output or displayed on a paper medium.

The process of FIG. 10 is terminated through the above steps 01 to 09.
With the process flow of the above work analysis program, when organizing work processes in line work, it is possible to identify work processes with large variations in work time and analyze the specified work processes in more detail. A highly accurate work standard can be created.

<Other embodiments>
In the above embodiment, as shown in FIG. 1, the work analysis system S includes a plurality of imaging devices 1, but is not particularly limited, and the work content of each work process is captured by only one imaging device 1. , May be recorded.

  In the above embodiment, the work time calculation unit 14, the analysis execution unit 17, and the process organization unit 18 receive and execute input of user operations, but are not particularly limited, and are based on the processing of the work analysis program. May be executed automatically.

  In the above embodiment, the start time determination unit 22 that determines the start time of the work process is executed between step 02 and step 03 in the work analysis process of FIG. It is good to execute at the same time.

In the present embodiment, the work analysis system and the work analysis method according to the present invention have been mainly described.
However, said embodiment is only an example for making an understanding of this invention easy, and does not limit this invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes the equivalents thereof.
In particular, the processing of the work analysis program executed by the work analysis system S, the structure and layout of the work element list data in FIG. 4, the work analysis screen in FIG. 5, and the work process organization screen in FIG. The configuration and arrangement layout described in the above embodiment are merely examples, and do not limit the present invention.

DESCRIPTION OF SYMBOLS S Work analysis system 1 Imaging device 2 Data storage part 3 Data preparation part 4 Data transmission part 10 Work analysis apparatus 11 Data storage part 12 Data acquisition part 13 Screen display part 14 Work time calculation part 15 Cycle specification part 16 Work process specification part 17 Analysis execution unit 18 Process organization unit 19 Data output unit 20 Sound extraction unit 21 Sound determination unit 22 Start point determination unit 30 Work analysis screen 31, 32, 33, 34, 35 Movie window 36 Work element list window 37 Cycle number display tab 38 Total time display tab 40 Work process organization screen 41 Movie window 42 Work element list window 43 Cycle number display tabs 44, 45 Stack graph windows 46, 47 Execute button

Claims (7)

In a line work consisting of a plurality of continuous work processes, a photographing device that photographs the work content of each of the work processes and records a work video;
A work analysis device connected to the photographing device through a network, capable of acquiring work video data indicating the work video, and analyzing the work process in the line work based on the work video data; Work analysis system,
The photographing device photographs at least two cycles or more of the work content of each of the work steps, and records the work moving image of at least two cycles or more for each of the work steps;
The work analysis apparatus includes:
A data storage unit that stores the work moving image data acquired from the imaging device separately for each cycle;
A work time calculation unit that calculates the work time of the work process separately for each cycle based on each stored work video data;
In each of the work steps, a cycle identifying unit that identifies a cycle in which the shortest work time is calculated and a cycle in which the longest work time is calculated;
Among the plurality of work processes, a work process identification unit that identifies the work process having the largest difference between the longest work time and the shortest work time;
An operation analysis system comprising: an analysis execution unit that performs an analysis on the specified specific work process as an analysis target. A screen display unit for displaying the work video indicated by the work video data for each work process on a display screen;
The analysis execution unit receives an input of a user operation, and includes an effective operation time indicating an effective operation time and an invalid operation recorded on the displayed work video for a human or machine that has performed an effective operation on the work content. 2. The work analysis system according to claim 1, wherein an invalid operation time indicating the elapsed time is calculated. The work time calculation unit receives an input of a user operation, divides the displayed work video for each work element, creates a work element video, and calculates the work element time of the work element from the work element video And
The analysis execution unit receives an input of a user operation, and an effective operation time indicating a time when the effective operation is performed on the work element, and an invalid operation time indicating a time when the invalid operation is performed, respectively. The work analysis system according to claim 2, wherein the work analysis system is calculated.   In response to an input from a user operation, the predetermined work element is specified from the plurality of work elements in the specific work process, and the specified specific work element is moved from the specific work process to another work process. The work analysis system according to claim 3, further comprising a process organization unit. The screen display unit simultaneously displays at least two work videos divided for each work process as a work analysis screen,
The analysis execution unit receives an input of a user operation on the work analysis screen, and performs an analysis on a plurality of the work processes including the specific work process as an analysis target. 5. The work analysis system according to any one of 4 above. The photographing device records the work moving image including sound generated during work,
The work analysis apparatus includes:
Stores set sound data relating to a preset set sound in the data storage unit,
A sound extraction unit that extracts the sound generated during work from the work video;
A sound determination unit that determines whether the extracted sound matches the set sound based on the set sound data;
A start time determination unit that determines a start time of the work process on the basis of a generation time of the sound matched with the set sound on a time axis set for the work video; The work analysis system according to claim 3. In a line work consisting of a plurality of continuous work processes, an imaging device that photographs the work content of each of the work processes for at least two cycles or more and records a work video of at least two cycles for each of the work processes; Computers connected through a network
A work analysis method capable of executing a process of acquiring work video data indicating the work video and analyzing the work process in the line work based on the work video data,
The computer including a data storage unit that stores each work moving image data acquired from the photographing apparatus separately for each cycle,
A work time calculation process for calculating the work time of the work process separately for each cycle based on each stored work video data;
In each of the work steps, a cycle specifying process for specifying a cycle in which the shortest work time is calculated and a cycle in which the longest work time is calculated;
Among the plurality of work processes, a work process specifying process for specifying the work process having the largest difference between the longest work time and the shortest work time;
An analysis execution process for performing an analysis with the specified specific work process as an analysis target.

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