JP2024040210A - Work time measuring system and work time measuring method - Google Patents

Abstract

To improve the precision of a measured work time.SOLUTION: A work time measuring system includes a work time measuring unit 60 that measures, at least as a work time, a time that is determined in such a way that a zone Z identified by an object identifying unit 20 corresponds to a work space S identified by a worker identifying unit 50.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to a work time measurement system and a work time measurement method.

There is a device that measures the working time of workers on a production line. For example, in Patent Document 1, a worker is imaged with a CCD camera, and the worker's working time is calculated based on the acquired image data.

Japanese Patent Application Publication No. 09-297864

In a production line where objects (so-called workpieces) flow through multiple zones on the line, multiple work spaces are provided to correspond to the multiple zones. In other words, in such a production line, workers perform predetermined operations on objects while moving back and forth between a plurality of spaces. In such a production line, when a worker is imaged by an imaging device and the working time is measured as in Patent Document 1, there is a possibility that the working time cannot be accurately measured. Specifically, for example, even if an imaging device identifies that a worker is in a certain space, if the object has not arrived in the zone corresponding to this work space, the worker is placed in a waiting state for work. . Nevertheless, if it is determined that the worker is working based on the image data in this state, an error will occur between the measured working time and the actual working time.

The present disclosure is to improve the accuracy of measured working time.

In the first mode, the object (W) flows through multiple zones (Z) on the line (L), and the worker (O) works in the work space (S) corresponding to the zone (Z). A work time measurement system that measures the work time of a worker (O) in a production line, and an object identification unit (20) that identifies in which zone (Z) the object (W) exists. and an imaging device (30) that acquires image data of an imaging range including the plurality of work spaces (S), and which work space the worker (O) can use based on the image data acquired by the imaging device (30) (S); the zone (Z) identified by the object identification unit (20); and the work identified by the worker identification unit (50). This work time measurement system is characterized by comprising a work time measurement unit (60) that measures at least the time determined to correspond to the space (S) as the work time.

In the first aspect, at the timing when the target object identification unit (20) identifies the zone (Z) in which the target object exists, the worker (O ) is identified based on the image data acquired by the imaging device (30), this time is measured as the working time. As a result, when a worker (O) exists in a work space (S) but no object (W) exists in the corresponding zone (Z), the time in this state is incorrectly measured as work time. This can be suppressed.

In a second aspect, in the first aspect, the work time measurement unit (60) calculates the total work time measured for one object (W) by calculating the total work time of the object (W). This is a work time measurement system that is characterized by calculating time.

In the second aspect, by calculating the total working time measured in each zone (Z) or each work space (S) for one object (W), It is possible to obtain the total working time required.

In a third aspect, in the first or second aspect, the worker identification unit (50) sets a plurality of areas (A) corresponding to the plurality of work spaces (S) in the image data. This is a work time measuring system characterized by comprising an area setting section (51) and a determining section (52) that determines whether a worker (O) is present in each of the areas (A).

In the third aspect, by dividing the image data for analysis into areas (A) corresponding to multiple work spaces (S), it is possible to determine which work space (S) the worker (O) is in. accuracy can be improved.

In a fourth aspect, in the third aspect, the worker identification unit (50) includes an area changing unit (53) capable of changing at least one of the size, position, shape, and number of the areas (A). This is a work time measurement system characterized by:

In the fourth aspect, even if the size, position, shape, number, etc. of the actual work space (S) are changed, the size, position, position, etc. of the area (A) in the image data, You can change the shape and number.

A fifth aspect of the fourth aspect includes a model identification section (22) for identifying the model of the object (W), and the worker identification section (50) identifies the object (W) with the model identification section (22). This work time measuring system is characterized in that at least one of the size, position, shape, and number of the area (A) is changed depending on the type of machine used.

In the fifth aspect, when the size, position, shape, number, etc. of the work space (S) are changed due to a change in the model of the target object (W), the image is The size, position, shape, and number of areas (A) in the data are automatically changed.

In the sixth aspect, the object (W) flows through multiple zones (Z) on the line (L), and the worker (O) works in the work space (S) corresponding to the zone (Z). This is a work time measurement method for measuring the work time of a worker (O) on a production line, which includes a step of identifying in which zone (Z) an object (W) exists, and a step of determining in which zone (Z) an object (W) exists, and multiple work spaces ( A step of acquiring image data of an imaging range including S), a step of identifying in which work space (S) the worker (O) is present based on the image data, and a step of determining in which work space (S) the worker (O) is present; The method is characterized by including the step of measuring, as at least the working time, a time during which it is determined that the identified zone (Z) and the working space (S) in which the worker (O) is identified correspond. This is a method of measuring work time.

In the sixth aspect, the time corresponding to the zone (Z) where the object (W) is identified and the work space (S) where the worker (O) is identified is measured as the work time. be done. As a result, if the worker (O) is in a workspace (S) but there is no object (W) in the zone (Z) corresponding to this workspace (S), the time in this state will be incorrect. It is possible to prevent the time from being measured as work time.

FIG. 1 is a diagram schematically showing an enlarged view of the periphery of a line of production equipment according to an embodiment. FIG. 2 is a block diagram showing a schematic configuration of the work time measurement system according to the embodiment. FIG. 3 is a first example showing a display screen of image data during analysis processing in the work time measurement system according to the embodiment. FIG. 4 is a second example showing a display screen of image data during analysis processing in the work time measurement system according to the embodiment. FIG. 5 is a third example showing a display screen of image data during analysis processing in the work time measurement system according to the embodiment. FIG. 6 is a schematic flowchart of the working time measuring method according to the embodiment. FIG. 7 is a specific example 1 of a time chart of the operating status of a production line. FIG. 8 is a second specific example of a time chart of the operating status of the production line. FIG. 9 is a third specific example of a time chart showing the operating status of a production line.

Embodiments of the present disclosure will be described below with reference to the drawings. Note that the following embodiments are essentially preferable examples, and are not intended to limit the scope of the present invention, its applications, or its uses.

The work time measurement system (10) according to this embodiment is applied to a production management system for a production line. The production line is a so-called ``mixed one-item flow'' system in which objects (W) of different models flow on one line (L).

As schematically shown in FIG. 1, the production equipment is provided with a line (L) (transport line) through which the object (W) (workpiece) flows. The line (L) is composed of, for example, a belt conveyor. An object (W) on a line (L) sequentially flows through multiple zones (Z). Specifically, the object (W) flows step by step through each zone (Z) while staying in each zone (Z) for a predetermined time based on a predetermined process schedule. In the example of FIG. 1, a first zone (Z1), a second zone (Z2), and a third zone (Z3) are provided on the line (L) from the upstream side to the downstream side. Below, these may be simply referred to as zones (Z).

The production equipment is provided with a work space (S) for a worker (O) to perform work. In this example, a second work space (S2) and a third work space (S3) are assigned to a certain worker (O). Below, these may be simply referred to as work spaces (S). The second work space (S2) is provided near the second zone (Z2). That is, when the object (W) is in the second zone (Z2), the worker (O) works in the second work space (S2). The third work space (S3) is provided near the third zone (Z3). When the object (W) is in the third zone (Z3), the worker (O) works in the third work space (S3). The work mentioned here includes assembly work, inspection work, repair work, disassembly work, etc.

A work completion button (21) serving as a work completion operation section is provided near the work space on the downstream side of the line (L) (for example, the third work space (S3)). The worker (O) presses the work completion button (21) when all the work (processes) are completed for a certain object (W). Then, the object (W) for which the work has been completed is then dispensed, and the next object (W) is sent onto the line (L). Note that the work completion operation section does not necessarily have to be a button, as long as it can output a signal indicating work completion in response to an operation by the worker (O).

As schematically shown in FIG. 1, the work time measurement system (10) includes a plurality of object detection sensors (20) and an imaging device (30). A target object detection sensor (20) is provided in each zone (Z). The object detection sensor (20) detects at least the arrival of the object (W) and the dispensing of the object (W) in each zone (Z). As a result, the arrival time and payout time of the object (W) for each zone (Z) are detected, and it can be determined in which zone (Z) the object (W) exists. In other words, the object detection sensor (20) constitutes an object specifying section that specifies in which zone (Z) the object (W) is present. Note that the object detection sensor (20) is preferably a non-contact type sensor that uses magnetism, radio waves, or the like.

The work time measurement system (10) includes a model identification unit (22) that identifies the model of the object (W) (see FIG. 2). For example, an IC chip, a label, a barcode, etc. containing ID information corresponding to the model of the object (W) is attached to a table (so-called pallet) on which the object (W) is placed. The model identification unit (22) identifies the model of the object (W) by reading this ID information. The function of the model identification section (22) may be incorporated into the object detection sensor (20).

The imaging device (30) is composed of a camera capable of capturing moving images. The imaging device (30) is provided at a position where it can image a plurality of work spaces (S) of the worker (O). The imaging device (30) acquires continuous image data (video data) of a plurality of work spaces (S). The lens of the imaging device (30) preferably uses a wide-angle lens, a fisheye lens, or the like, which has a wide imaging area. The imaging device (30) of this example is configured with an omnidirectional camera that is attached to the ceiling and can image a 360° range below the imaging device (30).

As shown in FIG. 2, the work time measurement system (10) includes a PLC (40) (programmable logic controller), a production record database (41), an image analysis server (50), and a work time measurement unit (60). Contains. Each of the PLC (40), production record database (41), image analysis server (50), and work time measurement unit (60) includes a microcomputer mounted on a control board and a computer for operating the microcomputer. It includes a memory device (specifically, a semiconductor memory) that stores software.

Various information and signals related to the operating status of the production line are input to the PLC (40). The arrival time and payout time for each of the plurality of zones (Z) detected by the object detection sensor (20) are also input to the PLC (40). In addition, the time when the above-mentioned work completion button (21) is turned on (that is, the work completion time) is also input into the PLC (40). The data input to the PLC (40) is stored in the production performance database (41) via a relay server or the like.

Image data acquired by the imaging device (30) is continuously stored in the image analysis server (50). The image analysis server (50) includes an area setting section (51), a determining section (52), and an area changing section (53).

The area setting unit (51) sets a plurality of areas (A) (areas surrounded by bold lines in FIG. 3) in the image data to be analyzed. The plurality of areas (A) set by the area setting section (51) are set at positions corresponding to the plurality of work spaces (S). In the example of FIG. 3, a second area (A2) corresponding to the second work space (S2) and a third area (A3) corresponding to the third work space (S3) are set.

The determining unit (52) determines in which work space (S) the worker (O) exists in the image data to be analyzed. Specifically, for example, if a worker (O) exists in a certain area (A), the determination unit (52) determines whether the worker (O) is in a work space (S) corresponding to this area (A). Determine that it exists. For example, in the example of FIG. 3, the worker (O) is located in the second area (A2). In this case, the determination unit (52) determines that the worker (O) is present in the second work space (S2). Based on this result, the determining unit (52) specifies in which work space the worker (O) is present at which time. In other words, the image analysis server (50) performs an analysis process to identify which work space (S) the worker (O) is located based on the image data acquired by the imaging device (30). It makes up the department.

The area changing unit (53) is configured to be able to arbitrarily change the area (A) set by the area setting unit (51) in the analysis process of image data acquired by the imaging device (30). The area changing unit (53) is configured to be able to change at least one of the size, position, shape, and number of areas (A).

Specifically, as shown in Figure 4, the flow line of the worker (O) in the second work space (S2) (the line indicated by the dashed-dotted arrow in Figure 4) is determined depending on the model of the object (W). If the area (A) changes, the size and shape of the area (A) will be changed to correspond to the flow line of the worker (O).

For example, as shown in FIG. 5, the number of zones (Z) where the object (W) stops on the line (L) may increase depending on the model of the object (W). In this case, the number of work spaces (Z) corresponding to the zone (Z) also increases. Therefore, in this case, the number of areas (A) is increased according to the number of work spaces (S).

In addition, in FIGS. 3 to 5, for convenience, the image data acquired by the imaging device (30) is shown as an image of a normal camera, but when an omnidirectional camera is used as the imaging device (30), the image data The data has a substantially circular shape.

The work time measurement unit (60) is a calculation processing unit that measures the actual work time of the worker (O). The work time measurement unit (60) detects the zone (Z) where the object (W) is identified by the object detection sensor (20) and the image analysis server (50) where the worker (O) is identified. It is determined whether or not the work spaces (S) correspond to each other, and the time determined to correspond is measured as the actual work time of the worker (O). In the example of FIG. 2, the work time measuring section (60) is a separate unit from the image analysis server (50) and the production performance database (41). However, the work time measuring section (60) may be incorporated into the image analysis server (50) or may be incorporated into the production performance database (41).

- Overview of working time measurement method -
The outline of the procedure for measuring the working time of the worker (O) will be explained with reference to the flowchart of FIG. 6.

In step ST1, the object detection sensor (20) specifies which object (W) exists in which zone (Z). Based on this detection result, the production record database (41) stores the time period (arrival time and delivery time) in which the object (W) stays in each zone (Z).

In step ST2, the work space (S) where the worker (O) is present is specified. In other words, the image analysis server (50) analyzes when/in which workspace (S) the worker (O) was present based on the image data captured by the imaging device (30), and stores the results. . Note that the order of step ST1 and step ST2 may be reversed or may be performed simultaneously.

In step ST3, the work time measuring section (60) compares the information obtained in step ST1 and the information obtained in step ST2. In step ST3, it is determined whether the zone (Z) where the object (W) exists corresponds to the zone (Z) where the worker (O) exists in the same time period. Note that the correspondence between the plurality of zones (Z) and the work space (S) is set in advance and stored in the storage unit. In step ST3, if both correspond, in principle, the time periods that overlap with each other are measured as the worker's (O) work time, and if not, they are not measured as the work time.

When the working time is appropriately measured in this way, the working time measurement system (10) calculates the total working time measured for a certain object (W) as the total working time for this object (W). Calculate (step ST5). The measurement results of the working time obtained as described above are stored in the production performance database (41) as appropriate.

-Specific example of how to measure working time-
A specific example of the working time measuring method will be explained in more detail.

<Specific example 1>
In example 1 shown in Fig. 7, a worker (O) performs multiple tasks on an object (W) of one model while going back and forth between the second work space (S2) and the third work space (S3). (process) is being carried out.

In this example, the object (W) is dispensed from the first zone (Z1) at time ta1 and arrives at the second zone (Z2) at time ta2. Next, the object (W) in the second zone (Z2) is paid out at time ta4. The time or time that the object (W) stays in the second zone (Z2) is determined based on the detection result of the object detection sensor (20).

On the other hand, in this example, the worker (O) is present in the third work space (S3) at time ta1, and has moved to the second work space (S2) at time ta3. As described above, such identification of the position of the worker (O) is performed based on image data acquired by the imaging device (30).

Focusing on the time (times ta2 to ta4) during which the object (W) exists in the second zone (Z2), the operator (O) corresponds to the second zone (Z2) between times ta2 and ta3. Not in the work space (ie, the second work space (S2)). Therefore, the time from time ta2 to time ta3 is not measured as the work time of the worker (O). On the other hand, from time ta3 to time ta4, the worker (O) exists in the second work space (S2) corresponding to the second zone (Z2). Therefore, the time T1 from time ta3 to time ta4 is measured as the working time of the worker (O).

The object (W) paid out from the second zone (Z2) at time ta4 arrives at the third zone (Z3) at time ta6. On the other hand, the worker (O) is present in the third work space (S3) corresponding to the third zone (Z3) from time ta6 to time ta8. However, the worker (O) has pressed the work completion button (21) at time ta7, and the work has already been completed at time ta7. In this case, the work completion button ( 21) is excluded, and the remaining time T2 (times ta6 to ta7) is measured as the work time of the worker (O).

The work time measurement unit (60) of this example measures the work time also during the time when the object (W) moves from one zone (Z) to the next zone (Z). Specifically, in this example, the object (W) is paid out from the first zone (Z1) at time ta4, and then arrives at the second zone (Z2) at time ta6. The worker (O) often performs work even while the object (W) is being moved. Therefore, the work time measurement unit (60) also considers the work time while moving to such an object (W).

Specifically, in this example, time ta5, which is an intermediate time between time T3 (time ta4 to time ta6) during which the object (W) is moving, is determined. Here, if the worker (O) is present in the second work space (S2) corresponding to the second zone (Z2) at time ta4 when the object (W) is delivered from the second zone (Z2), The person (O) is likely to continue working even after the object (W) is dispensed from time ta4. Therefore, when this condition is satisfied, half the time T4 of the time T3 during which the object (W) moves is added as the working time in the second work space (S2). Conversely, if the worker (O) is not present in the second work space (S2) corresponding to the second zone (Z2) at time ta4 when the object (W) is dispensed, time T4 is not measured as work time. .

On the other hand, the condition that the worker (O) exists in the third work space (S3) corresponding to the third zone (Z3) at time ta6 when the object (W) arrives at the third zone (Z3) at time ta6 If this holds true, half the time T5 of the time T3 during which the object (W) moves is added as the work time in the third work space (S3). Conversely, if the worker (O) is not present in the third work space (S3) corresponding to the third zone (Z3) at time ta6 when the object (W) arrives, time T5 is not measured as work time. .

As described above, the work time measurement unit (60) of this example calculates the time required for the object (W) to move from one zone (Z) to the next zone (Z). It is configured to measure work time depending on the presence or absence of a worker (O) in a work space (S) corresponding to each zone (Z) immediately before and after movement.

The work time measuring unit (60) measures each work time based on each of the above-mentioned times stored in the image analysis server (50) and the production record database (41). In the example shown in FIG. 7, the working time in the second working space (S2) is the sum of T1 and T4. The working time in the third working space (S3) is the sum of T2 and T5. Furthermore, the total working time of the worker (O) on the object (W) in this example is the working time (T1 + T4) in the second working space (S2) and the working time (T2 + T5) in the third working space (S3). It is measured as the sum of These working times are measured for each model of the object (W) identified by the model identification unit (22). Further, by inputting the ID information of the worker (O) into the production performance database (41), the working time of each worker (O) can also be measured.

<Specific example 2>
In example 2 shown in FIG. 8, a certain worker (O) is working on an object (W) of one model only in the third work space (S3).

In this example, the object (W) is dispensed from the first zone (Z1) at time tb1 and arrives at the second zone (Z2) at time tb2. From time tb2 to time tb3 when the object (W) stops in the second zone (Z2), the worker (O) is in the third work space (S3) that does not correspond to the second zone (Z2). Therefore, the time from time tb2 to time tb3 is not measured as working time.

When the object (W) arrives at the third zone (Z3) at time tb4, the worker (O) in the third work space (S3) performs the work. The worker (O) presses the work completion button (21) at time tb6. Therefore, the time from time tb4 to time tb6 is measured as working time.

At the time T7 when the object (W) moves from the second zone (Z2) to the third zone (Z3), the time T8 from the intermediate time tb5 to the time tb4 is the time when the object (W) moves from the second zone (Z2) to the third zone (Z3). It is added as the worker's (O) working time.

The work time measuring unit (60) measures each work time based on each of the above-mentioned times stored in the image analysis server (50) and the production record database (41). In the example shown in FIG. 8, the working time in the third working space (S2) is the sum of T8 and T6, and this time becomes the total working time for the object (W).

<Specific example 3>
In example 3 shown in FIG. 9, two different types of objects (W), model A and model B, are flowing on a line (L). The work time measurement unit (60) measures the work time for each model of the object (W). In addition, in the explanation of the example in FIG. 9, the time during which the object (W) is moving is also considered as the working time, as in the above-mentioned specific examples 1 and 2, but detailed explanation thereof will be omitted below. .

In this example, during the time period in which the model A is present in the third zone (Z3), the worker (O) is present in the third work space (S3) in the time periods Ta1 and Ta2. Therefore, the total working time of model A is the sum of Ta1 and Ta2.

On the other hand, during the time period when the model B exists in the second zone (Z2), the worker (O) is present in the second work space (S2) during the time periods Tb1 and Tb2. In addition, during the time period in which model B is present in the third zone (Z3), the worker (O) is present in the third work space (S3) in the time period Tb3. Therefore, the total working time of model B is the sum of Tb1, Tb2, and Tb3.

-Effects of embodiment-
In the embodiment, an object (W) flows through multiple zones (Z) on a line (L), and a worker (O) works in a work space (S) corresponding to the zone (Z). This is a work time measurement system that measures the work time of a worker (O) on a production line, and includes an object identification unit (20) that identifies in which zone (Z) the object (W) exists. an object detection sensor (20)), an imaging device (30) that acquires image data of an imaging range including the plurality of work spaces (S), and a worker based on the image data acquired by the imaging device (30). The worker identification unit (50) (image analysis server (50)) performs analysis processing to identify in which work space (S) the object (O) exists, and the object identification unit (20) determining whether or not the zone (Z) in which the worker (W) is identified as being present corresponds to the work space (S) in which the worker (O) is being identified as being present by the worker identification unit (50); The work time measuring section (60) measures the time determined to be compatible as at least the work time.

Therefore, if the worker (O) is in a certain work space (S) but the object (W) has not arrived at the corresponding zone (Z), this state is measured as work time. can be avoided. In other words, since the timing at which the object (W) and the worker (O) correspond to each other is measured as the working time, the working time of the worker (O) can be accurately detected.

By accurately detecting the working time obtained in this way according to the worker (O), object (W), machine type, etc., each process on the production line can be accurately reviewed and production efficiency can be improved. You can improve.

Detection of the worker (O) is performed based on image data acquired by the imaging device (30). With this image data, it is possible to specifically confirm not only the position of the worker (O) but also what kind of work the worker (O) is doing, and it is possible to improve the content of the work. The imaging device (30) serves both as a means for detecting the position of the worker (O) and as a means for checking the content of the work, so the number of parts can be reduced.

In the embodiment, the working time measurement unit (60) calculates the total working time measured for one object (W) as the total working time of the object (W). This makes it possible to grasp the total working time for the object (W) and review each process on the production line.

In the embodiment, the worker identification unit (50) includes an area setting unit (51) that sets a plurality of areas (A) respectively corresponding to the plurality of work spaces (S) in the image data subjected to the analysis process. ), and a determination unit (52) that determines whether a worker (O) is present in each area (A). By setting an area (A) corresponding to each work space (S) in the image data, it is possible to improve the accuracy of determining which work space (S) the worker (O) is in. Since data outside area (A) is excluded from the analysis target, the efficiency of analysis processing can be improved.

Specifically, as in the conventional example, characteristic image data such as a worker raising his or her hand can be determined in the analysis process, and the worker can be detected based on this. In this case, if a characteristic movement of the worker cannot be extracted, or if the worker does not make that movement, there is a possibility that the worker cannot be detected reliably. In the analysis process of this embodiment, it is only necessary to determine that the worker (O) is present in the area (A), and there is no need to determine the movement of the worker (O). Therefore, the detection accuracy of the operator (O) can be improved.

In the embodiment, the worker identifying section (50) includes an area changing section (53) capable of changing at least one of the size, position, shape, and number of the areas (A). As a result, as shown in Figures 3 to 5, in response to changes in the production line process, changes in the layout of the line (L), changes in the work space (S), changes in the model of the target object (W), etc. , the optimal area (A) can be formed as appropriate. As a result, the detection accuracy of the operator (O) can be improved while responding to such changes.

-Modified example-
The image analysis server (50) of the above embodiment may be configured to automatically change each area (A) as shown in FIGS. 3 to 5 depending on the model of the target object (W). . That is, in the storage unit of the image analysis server (50), the optimal area (A) according to the model of the object (W) is stored in advance for each model. This optimal area (A) includes at least one of the size, position, shape, and number of the area (A) as a change parameter. The image analysis server (50) changes the area of the image data for analysis processing to the optimal area stored in the storage unit, depending on the model identified by the model identification unit (22). That is, the image analysis server (50) changes at least one of the size, position, shape, and number of areas (A) according to the model identified by the model identification unit (22).

For example, when the model of the object (W) is changed, the work content of the worker (O) changes, and the work space (S) of the worker (O) also changes. In the modified example, the area (A) is automatically changed to follow such changes, improving the accuracy of determining in which work space (S) the worker (O) is present. In this case, there is no need to manually change the area (A) depending on the model of the object (W).

《Other embodiments》
In the embodiment described above, an area (A) is set in the image data for analysis processing, and the position of the worker (O) is specified based on whether or not the worker (O) is within this area (A). However, it is also possible to determine which work space (S) the worker (O) is in based on the image data without setting the area (A) of the image data.

In the embodiment described above, the time during which the object (W) is moving is the subject of determination of work time, but this time during movement may be excluded from the subject of determination of work time.

Although the embodiments and modifications have been described above, it will be understood that various changes in form and details can be made without departing from the spirit and scope of the claims. In addition, the above embodiments, modifications, and other embodiments may be combined or replaced as appropriate, as long as the functionality of the object of the present disclosure is not impaired. The descriptions of “first,” “second,” “third,” etc. mentioned above are used to distinguish the words to which these descriptions are given, and even the number and order of the words are limited. It's not something you do.

The present disclosure is useful for a work time measurement system and a work time measurement method.

10 Working time measurement system 20 Object detection sensor (object identification section)
22 Model identification unit 30 Imaging device 50 Image analysis server (worker identification unit)
51 Area setting section 52 Judgment section 53 Area changing section 60 Working time measuring section A Area L Line O Operator S Space W Object Z Zone

Claims (6)

In a production line where objects (W) flow through multiple zones (Z) on a line (L) and workers (O) work in work spaces (S) corresponding to the zones (Z), A work time measurement system for measuring work time of a person (O),
an object identification unit (20) that identifies in which zone (Z) the object (W) exists;
an imaging device (30) that acquires image data of an imaging range including the plurality of work spaces (S);
a worker identifying unit (50) that identifies in which work space (S) the worker (O) is located based on image data acquired by the imaging device (30);
The time during which it is determined that the zone (Z) identified by the object identifying unit (20) and the work space (S) identified by the worker identifying unit (50) correspond is measured as at least the working time. A work time measurement system comprising: a work time measurement unit (60) for measuring work time. In claim 1,
The working time measuring unit (60) calculates the total working time measured for one object (W) as the total working time of the object (W). system. In claim 1 or 2,
The worker identification unit (50)
an area setting unit (51) that sets a plurality of areas (A) corresponding to the plurality of work spaces (S) in the image data;
A work time measurement system comprising: a determination unit (52) that determines whether a worker (O) is present in each of the areas (A). In claim 3,
A work time measuring system characterized in that the worker specifying section (50) includes an area changing section (53) capable of changing at least one of the size, position, shape, and number of the areas (A). In claim 4,
Equipped with a model identification part (22) for identifying the model of the object (W),
The worker identification unit (50) changes at least one of the size, position, shape, and number of the areas (A) according to the model identified by the model identification unit (22). Work time measurement system. In a production line where objects (W) flow through multiple zones (Z) on a line (L) and workers (O) work in work spaces (S) corresponding to the zones (Z), A work time measurement method for measuring work time of a person (O),
a step of identifying in which zone (Z) the object (W) exists;
acquiring image data of an imaging range including a plurality of work spaces (S);
a step of identifying in which workspace (S) the worker (O) is located based on the image data;
A step of measuring the time during which it is determined that the zone (Z) in which the object (W) is identified to exist and the work space (S) in which the worker (O) is identified to exist correspond, as at least the working time. A work time measuring method characterized by comprising:

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