Production equipment productivity evaluation system or productivity evaluation method

Abstract

To evaluate, in a real-time manner, a productivity based on an operation status of a job-shop type production facility.SOLUTION: A productivity evaluating system evaluates the productivity of a job-shop type production facility that has multiple areas corresponding to multiple jobs, respectively, for producing plural kinds of products. The system creates, based on positional information on a worker obtained within a predetermined time period, movement actual record data that contains the number of times of movement by the worker between the areas among the multiple areas, and a movement time or a movement distance. The movement actual record data is utilized for calculating an evaluation index relating to the layout of the job-shop type production facility. By comparing the evaluation index with a reference value, the productivity of the job-shop type production facility is evaluated.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a production facility evaluation system or a production facility evaluation method. [Background technology]

[0002] One type of production facility capable of producing multiple types of products is a job-shop type production facility. A job-shop type production facility has multiple areas (shops), each corresponding to a multiple job performed in the production process for each product to be produced. In each area, production machines with functions and performance suited to the corresponding job are grouped and placed. The layout of the areas in a job-shop type production facility is appropriately reviewed based on the production plan (type and quantity of products to be produced), and job-shop type production facilities are known as a form suited to the production of a wide variety of products in small quantities. For example, Patent Document 1 discloses a production plan creation device for creating a production plan for efficiently producing multiple types of products in a job-shop type production facility. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-095392 Summary of the Invention [Problem to be solved by the invention]

[0004] In job-shop production facilities, it is important to streamline the layout of each area by reviewing the distance between areas and the number of worker movements between areas based on a production plan that includes the types and quantities of products to be produced in the future. However, in real-world job-shop production facilities, the layout considered efficient for the production plan can change dynamically due to discrepancies in operational performance relative to the production plan and the accumulation of relatively small changes to the production plan that are made from time to time. In this case, a layout that was set efficiently for the initial production plan may later become inappropriate for the changed production plan, resulting in wasted time spent moving between areas and working time, and reduced production efficiency.

[0005] At least one embodiment of the present disclosure has been made in consideration of the above-mentioned circumstances, and aims to provide a production equipment productivity evaluation system or productivity evaluation method that can evaluate productivity in real time based on the operational status of job-shop type production equipment. [Means for solving the problem]

[0006] In order to solve the above problems, a production facility productivity evaluation system according to at least one embodiment of the present disclosure includes: 1. A production facility productivity evaluation system for evaluating the productivity of a job shop type production facility having a plurality of areas corresponding to a plurality of jobs for producing a plurality of types of products, the system comprising: a location information acquisition unit for acquiring location information of workers who perform the plurality of jobs; an evaluation index calculation unit that generates movement record data including the number of times the worker moves between areas included in the plurality of areas and the movement time or movement distance based on the location information acquired during a predetermined period, and calculates an evaluation index related to the layout of the job shop production facility based on the movement record data; an evaluation unit for evaluating the productivity of the job shop production facility by comparing the evaluation index with a reference value; Equipped with.

[0007] In order to solve the above problem, a method for evaluating productivity of a production facility according to at least one embodiment of the present disclosure includes: 1. A production facility evaluation method for evaluating productivity of a job shop type production facility having a plurality of areas corresponding to a plurality of jobs for producing a plurality of types of products, the method comprising: acquiring location information of workers who perform the plurality of jobs; creating movement record data including the number of times the worker has moved between the areas included in the plurality of areas and the movement time or movement distance based on the location information acquired during a predetermined period, and calculating an evaluation index related to the layout of the job shop production facility based on the movement record data; evaluating the layout of the job shop production facility by comparing the evaluation index with a reference value; Equipped with. [Effects of the Invention]

[0008] According to at least one embodiment of the present disclosure, it is possible to provide a production facility productivity evaluation system or a productivity evaluation method that can evaluate productivity in real time based on the operation status of job shop type production facilities. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram illustrating a schematic configuration of a production facility. [Figure 2] 1 is a block diagram showing a configuration of a productivity evaluation system according to an embodiment. [Figure 3] 1 is a flowchart illustrating a productivity evaluation method according to an embodiment. [Figure 4] 10 is a flowchart illustrating a productivity evaluation method according to another embodiment. [Figure 5] 5 is an example of a From-To chart created in step S201 of FIG. 4. [Figure 6] 5 is an example of a route analysis table created in step S204 of FIG. 4. [Figure 7]FIG. 7 is a diagram showing how a From-To chart is created by converting the path analysis table shown in FIG. 6. [Figure 8] 10 is a flowchart illustrating a productivity evaluation method according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, several embodiments of the present invention will be described with reference to the accompanying drawings. However, the configurations described as the embodiments or shown in the drawings are merely illustrative examples and are not intended to limit the scope of the present invention.

[0011] First, a production facility 1 that is an evaluation target of a productivity evaluation system and a productivity evaluation method according to at least one embodiment of the present disclosure will be described with reference to Fig. 1. Fig. 1 is a diagram showing a schematic configuration of the production facility 1.

[0012] The production facility 1 is a job-shop type production facility for producing multiple types of products A, B, etc. The production facility 1 has multiple areas P1, P2, etc., each corresponding to a multiple job performed in the production process of each product A, B, etc. In each area P1, P2, etc., production machines with functions and performance appropriate for each job are grouped and arranged. In FIG. 1, product A is produced through areas P1 and P3, product B is produced through areas P2, P5, and P4, and product C is produced through areas P4 and P6. The layout of each area P1, P2, etc. in this production facility 1 is designed based on a production plan that sets the type and quantity of each product A, B, etc. to be produced in the production facility 1.

[0013] 1 illustrates an example in which three types of products X, Y, and Z are handled as production targets of the production facility 1, but there are no limitations on the types or number of products that can be handled by the production facility 1. Furthermore, there are no limitations on the number of areas that the production facility 1 has, the size of each area, or the production machines that are placed in each area.

[0014] Next, a description will be given of the configuration of a productivity evaluation system 100 for evaluating the productivity of the above-described production facility 1. Fig. 2 is a block diagram showing the configuration of the productivity evaluation system 100 according to one embodiment.

[0015] The productivity evaluation system 100 is composed of, for example, a CPU (Central Processing Unit), RAM (Random Access Memory), ROM (Read Only Memory), and computer-readable storage media. A series of processes for realizing various functions is stored in, for example, a storage medium in the form of a program. The CPU reads this program into RAM and executes information processing and arithmetic operations to realize various functions. The program may be pre-installed in a ROM or other storage medium, provided in a state stored in a computer-readable storage medium, or distributed via wired or wireless communication means. Examples of computer-readable storage media include magnetic disks, magneto-optical disks, CD-ROMs, DVD-ROMs, and semiconductor memories.

[0016] 2 is realized by executing a program stored in a storage medium or the like. Specifically, the productivity evaluation system 100 includes a location information acquisition unit 102, an evaluation index calculation unit 104, a reference value acquisition unit 106, and an evaluation unit 108.

[0017] The location information acquisition unit 102 is configured to acquire location information Ip of workers engaged in the production of products at the production facility 1. If there are multiple workers engaged in the production facility 1, location information Ip may be acquired for each worker. The location information Ip defines the location of the worker at the production facility 1 in association with time, and is information that can identify the duration of stay in each area of ​​the production facility 1, the distance traveled by the worker between each area, or the distance traveled. The specific manner in which the position information Ip is acquired will be described later.

[0018] The evaluation index calculation unit 104 is configured to calculate an evaluation index V related to the productivity of the production facility 1 based on the location information Ip acquired by the location information acquisition unit 102. Specific examples of the evaluation index V will be described later, but based on the location information Ip acquired over a predetermined period, movement record data D indicating the movement record of workers while products are being produced by the production facility 1 is created, and the evaluation index V is calculated based on the movement record data D. The movement record data D includes the number of times that workers move between areas of the production facility 1, and the movement time or movement distance.

[0019] When calculating the evaluation index V based on the location information Ip, the evaluation index calculation unit 104 may calculate the evaluation index V based on the travel time of the worker between each of the areas P1, P2, ..., ascertained from the location information Ip. In this case, if several travel times are obtained between the same areas, the average travel time may be specified as the travel time between the areas, or the maximum or minimum travel time may be specified as the travel time between the areas. In the former case, it is possible to calculate the evaluation index V using a standard travel time based on the average travel time. In the latter case, it is also possible to evaluate productivity according to the actual operating status of the production facility 1 by calculating the evaluation index V using a travel time that is overestimated or underestimated.

[0020] The reference value acquisition unit 106 is configured to acquire a reference value Vref for the evaluation index V. The reference value Vref is a parameter that serves as a standard for evaluating the productivity of the production equipment 1 by being compared with the evaluation index V, and is set or calculated to correspond to the evaluation index V.

[0021] The evaluation unit 108 is configured to evaluate the productivity of the production facility 1 by comparing the evaluation index V with a reference value Vref. The evaluation result may include, for example, a parameter that quantifies the productivity of the production facility 1. The evaluation result may also include a determination result regarding whether or not the layout of each area in the production facility 1 needs to be changed, and an optimized layout when it is determined that the layout needs to be changed.

[0022] Next, a description will be given of a productivity evaluation method implemented by the productivity evaluation system 100 having the above configuration. Fig. 3 is a flowchart showing the productivity evaluation method according to one embodiment.

[0023] First, the location information acquisition unit 102 acquires location information Ip of workers who are performing multiple jobs (step S100). The location information Ip is acquired continuously over at least a predetermined period of time (for example, at a predetermined sampling frequency). The location information Ip associates the location of the worker in the production facility 1 with time, making it possible to understand how the worker is moving within the production facility 1.

[0024] In one embodiment, the location information Ip is acquired from a mobile terminal carried by the worker. In this case, various portable devices such as a mobile phone, smartphone, tablet, or dedicated terminal can be used as the mobile terminal. By utilizing a function for acquiring the location information Ip, such as a GPS function, that is installed in these mobile terminals, the location information Ip of the worker carrying the mobile terminal in the production facility 1 can be acquired.

[0025] In another aspect, the location information Ip is acquired from a sensor (e.g., a B-controller) arranged in the production facility 1. In this case, the sensor may be arranged in each area P1, P2, ... of the production facility 1, so that the location information Ip can be acquired when the worker is located in each area. Furthermore, the sensor may be arranged between each area P1, P2, ..., so that the location information Ip can be acquired when the worker moves between areas. Furthermore, this aspect is advantageous in that by installing a sensor in an area where it is difficult to acquire the location information Ip using the GPS function described above due to communication conditions, the location information Ip can be acquired.

[0026] In another embodiment, the position information Ip is acquired based on image data captured by an imaging device installed in the production facility 1. In this embodiment, an imaging device such as a surveillance camera is placed at a predetermined position in the production facility 1. The imaging device covers an imaging range for recognizing workers in each area P1, P2, ... of the production facility 1. The image data acquired by the imaging device is subjected to image analysis to identify the movement status of the workers in the production facility 1. In addition, in a mode in which position information Ip is acquired using an imaging device, the imaging device is placed in each area P1, P2, ... or between each area P1, P2, ... so that it has a field of view that covers the range in which workers may move in each area P1, P2, ... of the production equipment 1 (i.e., so that there are no blind spots).

[0027] Next, the evaluation index calculation unit 104 creates movement history data D based on the location information Ip acquired in step S100 (step S101). In step S101, the location information Ip for a predetermined period is used to create the movement history data D. Here, the predetermined period can be set appropriately as a period for evaluating the productivity of the production facility 1. The movement history data D is data that indicates the movement status of workers in the production facility 1, and includes the number of times that workers move between areas P1, P2, ... that the production facility 1 has, and the movement time or movement distance.

[0028] Next, the evaluation index calculation unit 104 calculates an evaluation index V related to the productivity of the production facility 1 based on the movement performance data D created in step S101 (step S102), and the reference value acquisition unit 106 acquires a reference value Vref (step S103). The reference value Vref is a parameter that serves as a reference when evaluating the productivity of the production facility 1 based on the evaluation index V. Then, the evaluation unit 108 evaluates the productivity of the production facility 1 by comparing the evaluation index V calculated in step S102 with the reference value Vref acquired in step S103 (step S104).

[0029] The productivity evaluation system 100 can reliably evaluate the productivity of the actual production facility 1 by understanding the operational status of the production facility 1 in real time based on the location information Ip of the workers. This makes it possible to take measures such as reviewing the layout based on the evaluation results, even when the layout considered efficient for the production plan changes fluidly due to deviations in operational performance from the initial production plan or the accumulation of relatively small changes to the production plan made each time.

[0030] Next, specific embodiments of the productivity evaluation system 100 and productivity evaluation method will be described. First, an embodiment in which the total movement distance of workers in the production facility 1 is used as the evaluation index V will be described with reference to Fig. 4. Fig. 4 is a flowchart showing a productivity evaluation method according to another embodiment.

[0031] First, the location information acquisition unit 102 acquires the location information Ip (step S200). Step S200 is the same as step S100.

[0032] Next, the evaluation index calculation unit 104 creates a From-To chart based on the location information Ip acquired in step S200 (step S201). In step S201, the location information Ip acquired during a predetermined period is used as movement record data D, and the From-To chart is created by tallying the number of movements of workers between areas P1, P2, ... based on the movement record data D.

[0033] 5 is an example of a From-To chart created in step S201 of FIG. 4. The location information Ip acquired in step S200 includes information about the location of the worker in the production facility 1. The movement history data including this information identifies between which areas P1, P2, ... of the production facility 1 the worker moved when producing each product A, B, .... The From-To chart shows the combinations of the areas P1, P2, ... of the production facility 1 in a matrix, and the movement history of the worker identified based on the movement history data D is shown for each corresponding product A, B, .... The From-To chart created in this way makes it easy to understand between which areas P1, P2, ... the worker moved in the production facility 1 when producing each product A, B, ....

[0034] Next, the evaluation index calculation unit 104 calculates the total travel distance as the evaluation index V based on the From-To chart created in step S201 (step S202). The total travel distance is calculated by aggregating the results of multiplying the number of travels between each area P1, P2, ... identified from the From-To chart by the distance between each pre-identified area P1, P2, .... The total travel distance calculated in this way is the sum of the distances traveled by workers in the production facility 1 over a given period of time, and can be used as one of the indices for evaluating productivity. The distances between the areas P1, P2, . . . used to calculate the total travel distance in step S202 can be specified in advance based on the design layout of the production facility 1, for example.

[0035] Next, the reference value acquisition unit 106 acquires production plan information (step S203). The production plan information is information related to the production plan in the production facility 1, and includes, for example, information about the type and number of products to be produced in the future. Such production plan information may be input by an operator, or may be prepared by being stored in advance in a readable manner in a storage device.

[0036] Next, the reference value acquisition unit 106 creates a route analysis table based on the production plan information acquired in step S203 (step S204). The route analysis table indicates the multiple areas P1, P2, ... that the production facility 1 has, and identifies the areas P1, P2, ... used in the production process for each product A, B, ... produced by the production facility 1 included in the production plan information.

[0037] FIG. 6 is an example of a route analysis table created in step S204 of FIG. 4. In this example, the vertical axis lists the products A, B, etc. produced by production facility 1, and the horizontal axis lists the multiple areas P1, P2, etc. that production facility 1 has. For each product A, B, etc., the area used in the production process is indicated by a circle so that it can be distinguished. Specifically, it shows that the production process for product A uses areas P1 → P2 → P10 → P2 → P7 → P8 → P14 in this order. It also shows that the production process for product B uses areas P1 → P2 → P7 → P8 → P14 in this order. In FIG. 6, the production quantity specified by the production plan information is also shown for each product A, B, . . .

[0038] Next, the reference value acquisition unit 106 creates a From-To chart by converting the route analysis table created in step S204 (step S205). The From-To chart created in step S205 has the same format as the From-To chart described above with reference to Fig. 5 (i.e., the From-To chart created in step S201 based on the movement record data D), but differs in that it is created based on production plan information. In other words, in step S201, a From-To chart for calculating the evaluation index V is created based on the movement record data D, whereas in step S205, a From-To chart for calculating a reference value is created based on the production plan information.

[0039] FIG. 7 shows how a From-To chart is created by converting the route analysis table shown in FIG. 6. As shown in FIG. 7, the areas between which workers move for each product A, B, ... are identified in the route analysis table, and information about each product A, B, ... is entered into the corresponding areas in the From-To chart. For example, because there is a movement from area P2 to P3 in the production process of product A in the route analysis table, product A is entered in the column corresponding to area P2 to P3 in the From-To chart. Furthermore, because there is a movement from area P3 to P2 in the production process of product A in the route analysis table, product A is also entered in the column corresponding to area P3 to P2 in the From-To chart.

[0040] Next, the reference value acquisition unit 106 calculates a total travel distance reference value as a reference value Vref based on the From-To chart created in step S205 (step S206). In step S206, the number of times the worker has traveled between areas for each product A, B, ... is identified from the From-To chart, and the distance between each area P1, P2, ... is identified based on, for example, the design layout of the production facility 1. Then, the number of times and distances between each area are tallied to calculate a total travel distance reference value for the worker in the production facility 1.

[0041] Next, the evaluation unit 108 evaluates the productivity of the production facility 1 based on the total travel distance, which is the evaluation index V calculated in step S202, and the total travel distance reference value, which is the reference value Vref, calculated in step S206. Specifically, the evaluation unit 108 calculates the deviation ΔV between the total travel distance and the total travel distance reference value (step S207), and determines whether the deviation ΔV exceeds a threshold value (step S208).

[0042] If the deviation ΔV exceeds the threshold value (step S208: YES), the evaluation unit 108 determines that a layout change is "necessary" (step S209). In this case, the travel distance of the workers in the production facility 1 has increased to such an extent that the total travel distance, which is the evaluation index V, exceeds the total travel distance reference value, which is the reference value Vref, and the layout of the areas P1, P2, ... in the production facility 1 has become inefficient with respect to the production plan. In this case, the evaluation unit 108 calculates an optimal layout for the production facility 1 (step S210). In step S210, for example, an optimal layout that can improve the productivity of the production facility 1 is calculated based on the production plan information acquired in step S203.

[0043] On the other hand, if the deviation ΔV is equal to or less than the threshold value (step S208: NO), the evaluation unit 108 determines that a layout change is "unnecessary" (step S211). In this case, since the total movement distance, which is the evaluation index V, is equal to or less than the total movement distance reference value, which is the reference value Vref, the layout of each area P1, P2, ... in the production facility 1 has achieved efficiency within the expected range, and it is determined that a change in the layout is unnecessary.

[0044] According to this embodiment, the total travel distance of workers engaged in the production facility 1 is used as the evaluation index V for evaluating productivity, thereby enabling productivity to be appropriately evaluated from the perspective of the efficiency of workers' movement between each area in the production facility 1.

[0045] Next, an embodiment in which the cycle time for a specific product selected from products A, B, ... produced by the production facility 1 is used as the evaluation index V will be described with reference to Fig. 8. Fig. 8 is a flowchart showing a productivity evaluation method according to another embodiment.

[0046] First, the location information acquisition unit 102 acquires location information Ip (step S300). Step S300 is similar to steps S100 and S200 described above.

[0047] Next, the evaluation index calculation unit 104 creates a From-To chart based on the location information Ip acquired in step S300 (step S301). Step S301 is the same as step S201 described above.

[0048] Next, the evaluation index calculation unit 104 selects a product to be used in calculating the cycle time, which is the evaluation index V, from the multiple products A, B, ... produced by the production facility 1 (step S302). In step S302, an arbitrary product is selected from the multiple products A, B, ... identified from the production plan information of the production facility 1, and for example, a product that is important (critical) in terms of production is selected.

[0049] Next, the evaluation index calculation unit 104 calculates the cycle time corresponding to the product selected in step S302 as the evaluation index V (step S303). The cycle time is calculated as the operating time of the production equipment 1 required to produce a unit number of the product, based on the From-To chart created in step S301.

[0050] Next, the reference value acquiring unit 106 acquires the takt time as the reference value Vref (step S304). The takt time is the time required to produce a unit number of products in the production facility 1, and is defined, for example, by the following equation. Takt time = (operating time of production equipment 1) / production volume (1)

[0051] In the above formula (1), the operating time of the production facility 1 may be calculated by the following formula: Operation time of production equipment 1 = working time - idle time (2) In the above formula (2), the downtime may be calculated based on the movement record data D. As described above, the movement record data D can be obtained based on the location information Ip acquired by the location information acquisition unit 102. The location information Ip makes it possible to grasp the movement status in the production facility 1, and therefore, the real-time downtime of workers in the production facility 1 can be suitably identified from the movement status.

[0052] In addition, in the above formula (1), the production volume may be calculated using the following formula. Production volume = Required production volume / Good product rate (3) In the above formula (3), the required production volume is determined based on production plan information including a production plan for the production facility 1. The yield rate is determined based on performance data previously acquired for the production facility 1, for example.

[0053] Next, the evaluation unit 108 compares the cycle time, which is the evaluation index V calculated in step S303, with the takt time, which is the reference value Vref calculated in step S304, to evaluate the productivity of the production equipment 1. Specifically, the evaluation unit 108 determines whether the cycle time exceeds the takt time (step S305).

[0054] If the cycle time exceeds the takt time (step S305: YES), the evaluation unit 108 determines that a layout change is "necessary" (step S306). In this case, it means that the production efficiency of the production equipment 1 has decreased to the extent that the cycle time, which is the evaluation index V, exceeds the takt time, which is the reference value Vref. In this case, the evaluation unit 108 calculates an optimal layout for the production equipment 1 (step S307). In step S210, an optimal layout that can improve the productivity of the production equipment 1 is calculated based on, for example, production plan information.

[0055] On the other hand, if the cycle time is less than or equal to the takt time (step S305: NO), the evaluation unit 108 determines that a layout change is "unnecessary" (step S308). In this case, since the cycle time, which is the evaluation index V, is less than or equal to the takt time, which is the reference value Vref, the production efficiency of the production equipment 1 has not decreased, and the layout of each area P1, P2, ... in the production equipment 1 has achieved efficiency within the expected range, and it is determined that a change in the layout is unnecessary.

[0056] According to this embodiment, the cycle time for a specific product produced by the production facility 1 is used as the evaluation index V for evaluating productivity, thereby enabling productivity to be appropriately evaluated from the perspective of production efficiency in the production facility 1.

[0057] As described above, according to each of the above embodiments, in a job-shop production facility, the productivity of the production facility 1 can be suitably evaluated in real time by comparing the evaluation index calculated based on the position information Ip of the worker with a reference value.

[0058] Although the above embodiments evaluate the productivity of job-shop production equipment, the same concept can be applied to other applications. For example, one application is the design of an office. In this case, location information Ip indicating the floor (area) from which users access specific equipment (e.g., cafeteria, convenience store, conference room, office equipment, vending machine, etc.) is acquired in real time. Then, the user's travel distance is calculated based on the location information Ip and compared with a reference value Vref, thereby evaluating the efficiency of the building design for users. In this application, the design can be evaluated as more efficient as the evaluation index V, which is the user's travel distance, decreases. Furthermore, for specific equipment (e.g., smoking rooms) where the number of user movements should be reduced, the design can be evaluated as more efficient as the travel distance, which is the evaluation index V, increases. When evaluating an interior space such as an office building, even if GPS information Ip is acquired, it may be difficult to effectively acquire the location information Ip depending on the communication conditions. To address this issue, design evaluation can be performed by including elevator movement information for moving between floors in the office building in the location information Ip.

[0059] In addition, within the scope of the present disclosure, the components in the above-described embodiments may be replaced with well-known components as appropriate, and the above-described embodiments may be combined as appropriate.

[0060] The contents described in each of the above embodiments can be understood, for example, as follows.

[0061] (1) A system for evaluating productivity of production equipment according to one aspect of the present invention includes: 1. A production facility productivity evaluation system for evaluating the productivity of a job shop type production facility having a plurality of areas corresponding to a plurality of jobs for producing a plurality of types of products, the system comprising: a location information acquisition unit for acquiring location information of workers who perform the plurality of jobs; an evaluation index calculation unit that generates movement record data including the number of times the worker moves between areas included in the plurality of areas and the movement time or movement distance based on the location information acquired during a predetermined period, and calculates an evaluation index related to the layout of the job shop production facility based on the movement record data; an evaluation unit for evaluating the productivity of the job shop production facility by comparing the evaluation index with a reference value; Equipped with.

[0062] According to the above aspect (1), in a job-shop production facility, location information of workers who move between areas to perform each job is acquired over a predetermined period of time. The acquired location information is used to create movement history data including the number of times the worker moves between areas and the movement time or movement distance. The movement history data is then used to calculate an evaluation index related to the productivity of the production facility. The evaluation index calculated in this manner is compared with a reference value to evaluate the productivity of the job-shop production facility.

[0063] In this manner, the present embodiment makes it possible to reliably evaluate the productivity of actual production facilities by grasping the operational status of the production facilities in real time based on the location information of workers engaged in the job-shop production facilities. This makes it possible to take measures such as reviewing the layout based on the evaluation results, even when the layout considered efficient for the production plan changes dynamically due to deviations in operational performance from the initial production plan or the accumulation of relatively small changes to the production plan.

[0064] (2) In another embodiment, in the above embodiment (1), The evaluation index is the total travel distance of the worker calculated using a From-To chart created by aggregating the number of times the worker travels between the areas based on the travel performance data.

[0065] According to the above aspect (2), the total travel distance of workers engaged in the job shop production facility is used as an index for evaluating productivity. The total travel distance is calculated using a From-To chart created by aggregating the number of travels between areas included in the travel record data. By using such total travel distance as an evaluation index, productivity can be evaluated from the perspective of the efficiency of workers' travel between areas in the job shop production facility.

[0066] (3) In another aspect, in the above aspect (1) or (2), The reference value is a reference value of the total movement distance of the worker during the predetermined period, which is calculated based on production plan information of the job shop production facility.

[0067] According to the above aspect (3), when the total travel distance is used as the evaluation index, the total travel distance reference value calculated based on information (production plan information) related to future product production plans in the job-shop production facility is used as the reference value. This makes it possible to appropriately evaluate the productivity of the job-shop production facility based on the magnitude relationship between the total travel distance and the total travel distance reference value.

[0068] (4) In another embodiment, in the above embodiment (3), The evaluation unit creating a route analysis table indicating the area in which the worker will move for each product based on the production plan information; By converting the route analysis table, the number of movements of the worker between the areas is tallied to create the From-To chart; The total movement distance reference value is calculated based on the From-To chart.

[0069] According to the above aspect (4), the total travel distance reference value, which is a reference value, can be suitably calculated based on a From-To chart converted from a route analysis table created based on production plan information.

[0070] (5) In another aspect, in the above aspect (3) or (4), The evaluation unit determines that a change in the layout is necessary when a deviation of the total movement distance from the total movement distance reference value exceeds a threshold value.

[0071] According to the above aspect (5), the degree of deviation of the total travel distance of the workers from the total travel distance reference value is compared with a threshold value to determine whether or not a change in the layout of each area in the job-shop production equipment is necessary. For example, if the total travel distance significantly deviates from the total travel distance reference value calculated based on the production plan information, it suggests that the layout of each area in the job-shop production equipment does not match the actual operating situation and productivity is declining, and therefore a change in the layout is necessary.

[0072] (6) In another embodiment, in the above embodiment (1), the evaluation index is a cycle time, which is an operation time of equipment required to produce a unit number of target products selected from the plurality of types of products; the reference value is a takt time set for the job shop type production equipment, The evaluation unit determines that a change to the layout is necessary when the cycle time exceeds the takt time.

[0073] According to the above aspect (6), the productivity of a job shop production facility is evaluated by comparing the cycle time, which is the operating time required to produce a unit number of a specific target product, such as an important product, with the takt time, which is the production time per unit that can achieve a target production volume calculated from the required production volume and operating time specified by the production plan, etc., of the job shop production facility. As a result, if the cycle time exceeds the takt time and the cycle time cannot achieve the takt time, it can be determined that the productivity of the job shop production facility has decreased and that measures such as reviewing the layout are necessary.

[0074] (7) In another embodiment, in the above embodiment (6), The takt time is calculated by dividing the operating time, which is the time period minus the non-operating time specified based on the movement performance data, by the number of the target product produced in the predetermined period.

[0075] According to the above aspect (7), the takt time, which is a reference value for appropriately evaluating the productivity of production equipment, can be calculated by subtracting downtime that does not affect the productivity of the product from the predetermined time for which the movement performance data is acquired, dividing the result by the number of productions of the target product, and comparing it with the evaluation index.

[0076] (8) In another aspect, in the above aspect (5) or (6), When it is determined that a change in the layout is necessary, the evaluation unit calculates an optimal layout of the job shop type production equipment under the constraints of the job shop type production equipment so that the evaluation index becomes an optimal value.

[0077] According to the above aspect (8), when it is determined that the layout of each area needs to be changed based on the evaluation results of the productivity of the job-shop production equipment, an optimal layout is calculated based on the evaluation index. The optimal layout can be suitably obtained by searching for an optimal value (e.g., a maximum or minimum value) of the evaluation index under the constraints of the job-shop production equipment.

[0078] (9) In another embodiment, in any one of the above (1) to (8), When different travel times are obtained between the same areas based on the location information, the evaluation unit identifies at least one of a maximum value and a minimum value of the travel time.

[0079] When calculating the evaluation index from the movement performance data, for example, a preset standard value can be used as the movement time between each area. However, in the above aspect (9), by using at least one of the maximum and minimum values ​​of the movement time obtained based on the position information of the workers actually engaged in the job shop type production equipment, it is possible to appropriately evaluate productivity according to the actual operating situation.

[0080] (10) In another embodiment, in any one of the above (1) to (9), The location information is acquired from a mobile terminal carried by the worker.

[0081] According to the above aspect (10), by providing a mechanism for acquiring location information, such as a GPS function, in the mobile terminal (e.g., a mobile phone, smartphone, tablet, or dedicated terminal) carried by a worker engaged in job shop-type production equipment, the location information of the worker can be suitably acquired based on the location information from the mobile terminal.

[0082] (11) In another embodiment, in any one of the above (1) to (9), The position information is acquired from sensors disposed in the job shop type production facility.

[0083] According to the above aspect (11), location information of workers engaged in the job-shop type production equipment can be obtained by a sensor (e.g., a B-controller) installed in the job-shop type production equipment. Such sensors may be installed in each area or between areas, and can conveniently grasp the presence or absence and movement of workers in each area. In addition, in this case, by installing sensors in areas where it is difficult to obtain data using the aforementioned GPS function due to communication conditions, location information can be advantageously obtained.

[0084] (12) In another embodiment, in any one of the above (1) to (9), The position information is acquired based on image data captured by an imaging device installed in the job shop type production facility.

[0085] According to the above aspect (12), image data is acquired by an imaging device (e.g., a surveillance camera) installed in the job shop type production facility, and by analyzing the image data, it is possible to suitably acquire location information of workers engaged in the job shop type production facility.

[0086] (13) A method for evaluating productivity of production equipment according to one aspect includes: 1. A method for evaluating productivity of a job shop type production facility having a plurality of areas corresponding to a plurality of jobs for producing a plurality of types of products, the method comprising: acquiring location information of workers who perform the plurality of jobs; creating movement record data including the number of times the worker has moved between the areas included in the plurality of areas and the movement time or movement distance based on the location information acquired during a predetermined period, and calculating an evaluation index related to the layout of the job shop production facility based on the movement record data; evaluating the layout of the job shop production facility by comparing the evaluation index with a reference value; Equipped with.

[0087] According to the above aspect (13), in a job-shop production facility, location information of workers who move between areas to perform each job is acquired over a predetermined period of time. The acquired location information is used to create movement history data including the number of times the worker moves between areas and the movement time or movement distance. The movement history data is then used to calculate an evaluation index related to the productivity of the production facility. The evaluation index calculated in this manner is compared with a reference value to evaluate the productivity of the job-shop production facility.

[0088] In this manner, the present embodiment makes it possible to reliably evaluate the productivity of actual production facilities by grasping the operational status of the production facilities in real time based on the location information of workers engaged in the job-shop production facilities. This makes it possible to take measures such as reviewing the layout based on the evaluation results, even when the layout considered efficient for the production plan changes dynamically due to deviations in operational performance from the initial production plan or the accumulation of relatively small changes to the production plan. [Explanation of symbols]

[0089] 1. Production facilities 100 Productivity Evaluation System 102 Location information acquisition unit 104 Evaluation index calculation unit 106 Reference value acquisition unit 108 Evaluation Department A, B,... Product P1, P2, ... area IP location information V Evaluation Index Vref reference value

Claims

1. 1. A production facility productivity evaluation system for evaluating the productivity of a job shop type production facility having a plurality of areas corresponding to a plurality of jobs for producing a plurality of types of products, the system comprising: a location information acquisition unit for acquiring location information of workers who perform the plurality of jobs; an evaluation index calculation unit that generates movement record data including the number of times the worker moves between areas included in the plurality of areas and the movement time or movement distance based on the location information acquired during a predetermined period, and calculates an evaluation index related to the layout of the job shop production facility based on the movement record data; an evaluation unit for evaluating the productivity of the job shop production facility by comparing the evaluation index with a reference value; Equipped with A production facility productivity evaluation system, wherein the reference value is a reference value of the total movement distance of the worker during the specified period calculated based on production plan information of the job shop type production facility.

2. 2. The production equipment productivity evaluation system according to claim 1, wherein the evaluation index is a total travel distance of the worker calculated using a From-To chart created by aggregating the number of travels of the worker between the areas based on the travel performance data.

3. The evaluation unit creating a route analysis table indicating the area in which the worker will move for each product based on the production plan information; By converting the route analysis table, the number of movements of the worker between the areas is tallied to create the From-To chart; 3. The production facility productivity evaluation system according to claim 2, wherein the total movement distance reference value is calculated based on the From-To chart.

4. 3. The production facility productivity evaluation system according to claim 2, wherein the evaluation unit determines that a change in the layout is necessary when a deviation of the total movement distance from the total movement distance reference value exceeds a threshold value.

5. the evaluation index is a cycle time, which is an operation time of equipment required to produce a unit number of target products selected from the plurality of types of products; the reference value is a takt time set for the job shop type production equipment, 2. The production facility productivity evaluation system according to claim 1, wherein the evaluation unit determines that a change in the layout is necessary when the cycle time exceeds the takt time.

6. 6. The production facility productivity evaluation system according to claim 5, wherein the takt time is calculated by dividing an operating time, which is obtained by subtracting an idle time identified based on the movement performance data from the predetermined period, by a production number of the target product in the predetermined period.

7. 6. The production facility productivity evaluation system according to claim 2, wherein the evaluation unit, when it is determined that a change in the layout is necessary, calculates an optimal layout of the job shop production facility under constraints of the job shop production facility so that the evaluation index becomes an optimal value.

8. 2. The production equipment productivity evaluation system according to claim 1, wherein when different travel times are obtained between the same areas based on the location information, the evaluation unit identifies at least one of a maximum value or a minimum value of the travel times.

9. The production facility productivity evaluation system according to claim 1 , wherein the location information is acquired from a mobile terminal carried by the worker.

10. The production facility productivity evaluation system according to claim 1 , wherein the position information is acquired from a sensor disposed in the job shop type production facility.

11. 2. The production facility productivity evaluation system according to claim 1, wherein the position information is acquired based on image data captured by an imaging device installed in the job shop production facility.

12. 1. A method for evaluating productivity of a job shop type production facility having a plurality of areas corresponding to a plurality of jobs for producing a plurality of types of products, the method comprising: acquiring location information of workers who perform the plurality of jobs; creating movement record data including the number of times the worker has moved between the areas included in the plurality of areas and the movement time or movement distance based on the location information acquired during a predetermined period, and calculating an evaluation index related to the layout of the job shop production facility based on the movement record data; evaluating the layout of the job shop production facility by comparing the evaluation index with a reference value; Equipped with The method for evaluating productivity of production equipment, wherein the reference value is a reference value of the total movement distance of the worker during the specified period calculated based on production plan information of the job shop type production equipment.

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