JP5825906B2 - Production management apparatus, process analysis method, and process analysis program - Google Patents

Description

  The present invention relates to a production management device, a process analysis method, and a process analysis program.

  In order to realize efficient production of products, it is important to analyze the production plan and actual results in comparison with each process. A technique for analyzing the working time for each process is disclosed in Patent Document 1, for example.

Japanese Patent Laid-Open No. 05-183297

  A production plan may include a number of processes. In such a case, if it is necessary to go back and forth between the screens many times in order to compare the production plan and the actual results for each process, it takes a lot of labor for the analysis.

  The present invention has been made in view of the above, and it is an object of the present invention to provide a production management device, a process analysis method, and a process analysis program that make it possible to easily compare production plans and results for each process. And

  In order to solve the above-described problems and achieve the object, the production management apparatus according to the present invention includes a storage unit that stores a scheduled value and an actual value of the working time of each process included in the production plan, and the scheduled value. The first symbol or first graphic corresponding to the average value for each process of the above and the second symbol or second graphic corresponding to the average value of the actual value for each process on the same scale for each process And a control unit that superimposes and displays.

  Here, as a desirable mode of the present invention, the control unit displays the third symbol or the third figure corresponding to the minimum value for each process of the actual value, further superimposed on the same scale for each process. Let

  Moreover, as a desirable aspect of the present invention, the control unit causes the third symbol or the third figure corresponding to the maximum value of the actual value for each process to be superimposed and displayed on the same scale for each process. .

Moreover, as a desirable aspect of the present invention, the control unit further sets the third symbol or the third figure corresponding to the range from the minimum value to the maximum value of the actual value for each process on the same scale for each process. Overlay and display.

Further, as a desirable aspect of the present invention, the production plan is composed of a combination of work modes selected for each process, and the control unit corresponds to an average value of the scheduled values for each work mode selected in each process. The fourth symbol or the fourth graphic to be performed and the fifth symbol or the fifth graphic corresponding to the average value of the actual values for each work mode selected in each step are on the same scale for each work mode. Overlay and display further.

  Moreover, as a desirable aspect of the present invention, the control unit changes information on the operated work form in accordance with an operation on the information displayed for each work form.

  Moreover, as a desirable aspect of the present invention, the control unit does not select the operated work form according to an operation on the information displayed for each work form.

  Further, in order to solve the above-described problems and achieve the object, the process analysis method according to the present invention is a process analysis method executed by an information processing apparatus, and includes a work time of each process included in a production plan. Storing a scheduled value and an actual value; a first symbol or first graphic corresponding to an average value for each process of the scheduled value; and a second corresponding to an average value for each process of the actual value And displaying a symbol or a second graphic superimposed on the same scale for each process.

  In order to solve the above-described problems and achieve the object, the process analysis program according to the present invention stores, in the information processing apparatus, scheduled values and actual values of the working time of each process included in the production plan. A step, a first symbol or first graphic corresponding to the average value of the scheduled value for each process, and a second symbol or second graphic corresponding to the average value of the actual value for each process. And the step of superimposing and displaying on the same scale each time.

  The production management device, the process analysis method, and the process analysis program according to the present invention have an effect that it is possible to easily compare the production plan and the actual results for each process.

FIG. 1 is a block diagram illustrating the configuration of the production management apparatus according to the present embodiment. FIG. 2 is a diagram illustrating an example of process information. FIG. 3 is a diagram illustrating an example of shipment schedule information. FIG. 4 is a diagram illustrating an example of search result information. FIG. 5 is a diagram illustrating an example of production plan information. FIG. 6 is a flowchart showing the processing procedure of the production plan planning process. FIG. 7 is a flowchart showing a processing procedure of local optimum solution search processing. FIG. 8 is a diagram illustrating an example of the production plan search screen. FIG. 9 is a diagram illustrating an example of a work performance screen. FIG. 10 is a diagram illustrating an example of a work time distribution screen. FIG. 11 is a diagram illustrating an example of displaying information related to the work performance of the process according to work modes. FIG. 12 is a diagram illustrating an example of changing process information on a work performance screen.

  Embodiments of a production management device, a process analysis method, and a process analysis program according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments. In addition, the constituent elements in this embodiment include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those in a so-called equivalent range.

  First, the configuration of the production management apparatus according to the present embodiment will be described. FIG. 1 is a block diagram illustrating the configuration of the production management apparatus according to the present embodiment. A production management apparatus 10 shown in FIG. 1 performs production planning for efficiently producing products, and analysis of work processes (hereinafter simply referred to as “processes”) executed based on the production plan. An information processing apparatus to perform.

  In the present embodiment, the “production plan” is a plan that indicates when and how much time each process for producing a product is executed using which resources (workers and equipment). Say. In this embodiment, “product” means a product produced through a process, and does not necessarily mean a final product. That is, the “product” described in the present embodiment includes parts incorporated in other products.

  As shown in FIG. 1, the production management apparatus 10 includes a display unit 11, an input unit 12, a communication unit 13, a medium reading unit 14, a control unit 15, and a storage unit 16.

  The display unit 11 includes a display device such as a liquid crystal panel or an organic EL (Organic Electro-Luminescence) panel, and displays various information such as characters and figures based on a control signal transmitted from the control unit 15. The input unit 12 includes an input device such as a keyboard, and outputs a signal corresponding to an operation performed by the user on the input device to the control unit 15.

  The communication unit 13 controls transmission and reception of information with other devices such as the mobile terminal device 20 based on a predetermined communication protocol. The mobile terminal device 20 is an information processing terminal that is carried by a worker who is engaged in production of a product. The medium reading unit 14 reads a program and data from a storage medium such as a CD-ROM.

  The control unit 15 includes a CPU (Central Processing Unit) 151 that is a calculation unit and a memory 152 that is a storage unit, and implements various functions by executing programs using these hardware resources. Specifically, the control unit 15 reads out a program stored in the storage unit 16 and expands it in the memory 152, and causes the CPU 151 to execute an instruction included in the program expanded in the memory 152. The control unit 15 reads / writes data from / to the memory 152 and the storage unit 16 and controls the operation of the communication unit 13 and the like according to the execution result of the instruction by the CPU 151.

  The storage unit 16 includes a nonvolatile storage device such as a magnetic storage device or a semiconductor storage device, and stores various programs and data. The data stored in the storage unit 16 includes worker information 161, process information 162, shipping schedule information 163, search result information 164, and production plan information 165. The programs stored in the storage unit 16 include a production plan planning program 166, a process management program 167, and a process analysis program 168.

  Note that all or part of the programs and data that are stored in the storage unit 16 in FIG. 1 may be stored in a storage medium that can be read by the medium reading unit 14. Further, all or part of the program and data that the storage unit 16 stores in FIG. 1 may be acquired from another device through communication by the communication unit 13.

  The worker information 161 holds information related to a worker who performs work in each process. The worker information 161 includes information related to the work schedule of the worker.

  The process information 162 holds information regarding work performed in each process. FIG. 2 is a diagram illustrating an example of the process information 162. As shown in FIG. 2, the process information 162 includes items such as a process number, an operation mode number, an effective flag, an inside / outside operation classification, a use facility, an operator, an operation time, and a penalty. The process information 162 is configured to hold a plurality of combinations of penalties based on work mode numbers for one process number.

  The process number is an identification number for identifying a process. The work mode number is an identification number for identifying the work mode of the process. There may be a plurality of patterns in the work form of each process, in which the equipment to be used and the worker in charge are different. The work mode number is assigned to each pattern of each process. The valid flag indicates whether or not the corresponding pattern is valid. In this embodiment, when the corresponding pattern is valid, the value of the valid flag is “1”, and when the corresponding pattern is not valid, the value of the valid flag is “0”. Invalid patterns are not used when creating production plans.

  The inside / outside work classification indicates whether the work is performed in-house or in another company in the corresponding pattern. In this embodiment, when the work is performed in-house, the value of the internal / external work classification is “internal work”, and when the work is performed by another company, the value of the internal / external work classification is “external”. The used equipment is an identification number of the equipment used in the corresponding pattern.

  The worker indicates a worker who is in charge of work in the corresponding pattern. When the worker value is “* (1)”, it indicates that any one person is in charge of work, and when the worker value is “* (2)”, any two persons are in charge of work. It shows that. Thus, when the value of the worker is a combination of “*” and a number with parentheses, it indicates that the number of workers indicated by the number is in charge of the work. In this case, the worker is not specified. Further, when the value of the worker is a list of specific worker names or identification numbers, it indicates that the worker corresponding to the list is in charge of the work.

  The work time indicates an estimated time required for work in the corresponding pattern. The penalty is a value for evaluating the corresponding pattern. In this embodiment, the penalty is set to a large value so that the corresponding pattern is not preferable.

  In the example illustrated in FIG. 2, three work mode numbers “OP01-01”, “OP01-02”, and “OP01-03” are associated with one process number “P01”. This indicates that the process identified by “P01” is executed in one of three patterns of work forms.

  In the pattern identified by “OP01-01”, “EA-01” is set as the use facility, “60 minutes” is set as the work time, and “0” is set as the penalty. In the pattern identified by “OP01-02”, “EA-02” is set as the use facility, “80 minutes” is set as the work time, and “10” is set as the penalty. In the pattern identified by “OP01-03”, “EA-03” is set as the use facility, “90 minutes” is set as the work time, and “20” is set as the penalty. The values of other items are common to the three patterns. This indicates that the process identified by “P01” differs in work time depending on the equipment used, and a pattern with a short work time is preferable.

  In addition, when the equipment to be used varies depending on the pattern, the penalty value may be determined based on the cost and the use, not the work time. For example, when the processing cost varies depending on the equipment used, the penalty may be set higher for a pattern using equipment having a higher processing cost. Also, in a pattern that uses equipment mainly used in other processes, the penalty may be set higher than a pattern that uses equipment mainly used in that process.

  In the example illustrated in FIG. 2, two work form numbers “OP02-01” and “OP02-02” are associated with one process number “P02”. This indicates that the process identified by “P02” is executed in one of two patterns of work forms.

  In the pattern identified by “OP02-01”, “TANAKA” and “SUZUKI” are set as the workers, and “120 minutes” is set as the work time. In the pattern identified by “OP02-02”, “SATO” and “CHIBA” are set as the workers, and “240 minutes” is set as the work time. The values of other items are common to the two patterns. This is because when a worker named “TANAKA” and a worker named “SUZUKI” are in charge of work, compared with a case where a worker named “SATO” and a worker named “CHIBA” are in charge of work, Indicates that it ends in half the time.

  The difference between the work times of the two patterns is attributed to, for example, the proficiency level of the work. The two patterns are both set to “0” as a penalty, but this is because either pattern may be selected according to the assignment status of workers to other processes. At the discretion of the person.

  In the example illustrated in FIG. 2, two work form numbers “OP03-01” and “OP03-02” are associated with one process number “P03”. This indicates that the process identified by “P03” is executed in one of two patterns of work forms.

  In the pattern identified by “OP03-01”, “ITO” is set as the worker, “60 minutes” is set as the work time, and “0” is set as the penalty. In the pattern identified by “OP03-02”, “HAYASHI” is set as the worker, “90 minutes” is set as the work time, and “20” is set as the penalty. The values of other items are common to the two patterns. This indicates that the pattern “ITO” is in charge of the pattern because the worker “ITO” can finish the work earlier than the worker “HAYASHI”.

  As described above, when the workers in charge of work differ depending on the pattern, the penalty value may be varied for each pattern according to the proficiency level of the worker. For example, when there is a first pattern in which a worker who is proficient in the corresponding process is assigned and a second pattern in which an unskilled worker is assigned in the corresponding process, the penalty of the second pattern is set to the first pattern. It may be set higher than the pattern. By setting in this way, it becomes easy to create a work plan in which work in each process is completed early.

  When the worker in charge of work differs depending on the pattern, the penalty value may be varied for each pattern according to the width of adaptation of the worker (the number of processes that can be handled). For example, when there are a first pattern in which workers who are proficient in a large number of processes are assigned and a second pattern in which workers who are proficient in only a few processes are assigned, the penalty of the first pattern is set to the first pattern. It may be set higher than the pattern 2. By setting in this way, it is possible to reduce the possibility of creating a work plan including a state in which workers who are familiar with only a small number of processes are not assigned to any process.

  In the example illustrated in FIG. 2, two work mode numbers “OP04-01” and “OP04-02” are associated with one process number “P04”. This indicates that the process identified by “P04” is executed in one of two patterns of work forms.

  In the pattern identified by “OP04-01”, “* (2)” is set as the worker, and “120 minutes” is set as the work time. In the pattern identified by “OP04-02”, “* (1)” is set as the worker, and “240 minutes” is set as the work time. The values of other items are common to the two patterns. This indicates that when two workers are assigned, the work can be completed early in half the time when one worker is assigned. Each of the two patterns has a penalty of “0”, which is selected depending on the assignment status of workers to other processes and the working time of other processes. It depends on the manager's judgment that it is okay.

  In the example illustrated in FIG. 2, two work mode numbers “OP05-01” and “OP05-02” are associated with one process number “P05”. This indicates that the process identified by “P05” is executed in one of two patterns of work forms.

  In the pattern identified by “OP05-01”, “internal work” is set as the internal / external work classification, “60 minutes” is set as the work time, and “0” is set as the penalty. In the pattern identified by “OP05-02”, “outsourcing” is set as the internal / external work classification, “720 minutes” is set as the work time, and “1000” is set as the penalty. The two patterns have different values for the equipment used and the workers. This indicates that the process identified by “P05” can be requested from another company, but requesting from the other company is not preferable in terms of work time and the like.

  Note that the penalty value shown in FIG. 2 is an example, and the administrator of the production management apparatus 10 can arbitrarily change the penalty value according to the actual situation, strategy, and the like.

  The shipping schedule information 163 holds information related to the shipping schedule of products. FIG. 3 is a diagram illustrating an example of the shipping schedule information 163. As shown in FIG. 3, the shipping schedule information 163 includes items such as an order number, a priority, and a shipping date. The order number is an identification number for identifying a product order. The priority is a value indicating the high priority of the order. In this embodiment, it is assumed that an order with a priority value “1” has the highest priority, and an order with a higher priority value has a lower priority. The shipping date is the date on which the product corresponding to the order should be shipped.

  The search result information 164 holds information related to the production plan searched in the process of determining a suitable production plan. FIG. 4 is a diagram illustrating an example of the search result information 164. As shown in FIG. 4, the search result information 164 includes information set for each production plan, information set for each production plan and for each order, and information set for each production plan, for each order, and for each process. Including.

  Information set for each production plan includes items such as a plan number, an evaluation value, a total number of days delayed, a total work time, and a total number of workers. The plan number is an identification number for identifying a production plan. The evaluation value is an index value for evaluating the production plan. In this embodiment, the evaluation value is a value obtained by adding the sum of the penalties related to the shipment of all orders included in the production plan and the sum of the penalties related to the operations of all the steps included in the production plan.

  The total delay days is the sum of the shipping delay days of orders included in the production plan. The total work time is the total work time of the processes included in the production plan. The total number of workers is the total number of workers assigned to the processes included in the production plan. The total number of days delayed, the total work time, and the total number of workers are used as index values for evaluating the production plan from a viewpoint different from the evaluation value. In addition, as index values for evaluating the production plan, the total number of days left until the shipment date of all orders (period of holding as inventory), the number of setups, the total of equipment priority, the total of worker priority, overtime You may make it hold | maintain time, the level of work (variation of work time for every day), etc.

  Information set for each production plan and each order includes items such as an order number, priority, shipping date, predicted shipping date, and shipping penalty. The order number is an identification number for identifying a product order. The priority is a value indicating the high priority of the order. The shipping date is the date on which the product corresponding to the order should be shipped. The predicted shipping date is the date on which the product is shipped when the product is produced according to the production plan.

  The penalty for shipping is a value for evaluating a delay in shipping when a product is produced according to the production plan. In this embodiment, the penalty related to shipping is calculated by multiplying the shipping delay days by 1000. The shipment delay days are 0 days when the estimated shipping date is the same date as the shipping date or before the shipping date, and when the estimated shipping date is after the shipping date, from the shipping date to the estimated shipping date. Is the number of days. Note that the method of determining the penalty for shipping is not limited to this example. For example, when creating a production plan that includes overtime work in order to protect the shipment date, the shipping penalty will be set according to the cost of overtime work (worker overtime, equipment operation costs, etc.). You may decide. Further, a penalty for shipping may be determined according to the number of days that the product is held as stock.

  Information set for each production plan, each order, and each process includes items such as a process number, a work mode number, an inside / outside work classification, equipment used, a worker, a start date / time, an end date / time, and a work time. These items are the substance of the production plan. That is, these items indicate which resource is used, when and how long to execute the process for producing the product. The information set for each production plan, each order, and each process further has an item of work penalty.

  The process number is an identification number for identifying a process. The work mode number is an identification number for identifying the work mode of the process. The domestic / external work category indicates whether the work is performed in-house or by another company. The equipment used is an identification number of the equipment used. The worker indicates a worker who is in charge of the work. The start date and time is the date and time when the work should be started. The end date and time is the date and time when the work should be ended. The work time is the difference between the end date and time and the start date and time, that is, the time that can be spent on the work.

  The penalty for work indicates the preference of the selected work form. For the penalty related to the work, a penalty value set in association with the selected work form in the process information 162 is set.

  The production plan information 165 holds information regarding the selected production plan and the results of work performed based on the production plan. FIG. 5 is a diagram illustrating an example of the production plan information 165. As shown in FIG. 5, the production plan information 165 includes items such as an order number, a process number, a work mode number, an inside / outside work classification, equipment used, and an operator. Further, the production plan information 165 includes items of start date and time, end date and time, and scheduled values of work time, and items of start date and time, end date and time, and actual values of work time. The production plan information 165 is configured so as to be able to hold a plurality of combinations of actual values of work times from process numbers for one order number.

  The order number is an identification number for identifying a product order. The process number is an identification number for identifying a process. The work mode number is an identification number for identifying the work mode of the process. The domestic / external work category indicates whether the work is performed in-house or by another company. The equipment used is an identification number of the equipment used. The worker indicates a worker who is in charge of the work. The scheduled value of the start date / time is the date / time when the work should be started. The scheduled value of the end date / time is the date / time when the work should be ended. The scheduled value of the work time is a time that can be spent on the work.

  The actual value of the start date / time is the date / time when the work was actually started. The actual value of the end date / time is the date / time when the work is actually ended. The actual value of the work time is the time actually required for the work. The actual values of the start date / time, end date / time, and work time are blank or 0 at the stage when the production plan information 165 is created.

  The production planning program 166 provides a function for creating a suitable production plan. The production plan planning program 166 includes an initial plan creation unit 166a, a scheduler 166b, a production plan evaluation unit 166c, a production plan search unit 166d, and a production plan selection unit 166e.

  The initial plan creation unit 166a provides a function of creating an initial production plan (hereinafter also referred to as “initial plan”) based on the process information 162, the shipping schedule information 163, and the like. The initial plan is created by randomly selecting a work mode of each process for producing a product corresponding to the order registered in the shipping schedule information 163. Therefore, the contents of the initial plan are different each time it is created.

  The scheduler 166b assigns resources (workers and equipment) to each process for the production plan in which the products to be produced and the work forms of the processes for producing those products are determined, A function for determining the start date and time and the end date and time of the process is provided. The allocation of resources and the determination of the start date / time and end date / time are performed so that the order of higher priority is protected for the shipping date.

  The production plan evaluation unit 166c provides a function for evaluating a production plan. Specifically, the production plan evaluation unit 166c provides a function for calculating the evaluation value shown in FIG. 4 and a function for calculating an index value other than the evaluation value such as the total number of days delayed.

  The production plan search unit 166d provides a function of searching for a suitable production plan starting from the initial plan. Specifically, according to the function provided by the production plan search unit 166d, a suitable production plan is searched by a local search method using a plurality of initial plans as follows.

  First, one initial plan is a current production plan (hereinafter sometimes referred to as a “current plan”). Then, the evaluation value of the current plan is compared with the evaluation value of the neighboring production plan in which a part of the current plan is changed. If the neighboring production plan is more highly evaluated, the neighboring production plan is regarded as the current plan. The Thus, the search for the neighborhood of the current plan is repeatedly executed until a predetermined end condition is satisfied, and as a result, one suitable production plan (local optimum solution) is obtained.

  Subsequently, another initial plan is made the current plan, and another suitable production plan (local optimum solution) is obtained by searching for a production plan in the vicinity of the current plan. Thus, a suitable production plan (local optimum solution) is searched for each initial plan, starting from a plurality of initial plans. Then, the highest evaluation among the plurality of suitable production plans (local optimum solutions) searched is selected as the production plan to be executed. The selected production plan is stored as production plan information 165. In this way, by performing a search using a plurality of initial plans, it is possible to evaluate various combinations of work forms, and as a result, there is a possibility that a truly optimal production plan or a production plan close to it may be obtained. Rise.

  The production plan selection unit 166e provides a function for supporting an operation for an administrator to select a production plan to be executed from the production results recorded in the search result information 164 during the search process. The production plan search unit 166d selects a production plan to be executed based on the evaluation value. However, depending on the situation, it may be preferable to select the production plan in consideration of an index value other than the evaluation value. In such a case, the administrator refers to the information displayed on the display unit 11 by the function provided by the production plan selection unit 166e and reselects the production plan to be executed. The reselected production plan is stored as production plan information 165.

  The process management program 167 has a function of distributing the production plan information 165 to the mobile terminal device 20 shown in FIG. 1 and a function of collecting information on the results of work performed based on the production plan from the mobile terminal device 20. provide.

  The portable terminal device 20 is carried by a worker who is in charge of work in each process. The portable terminal device 20 displays information related to the worker carrying the device among the information included in the distributed production plan information 165 on the display unit. Therefore, the worker can easily know when and what process should be performed on which product using which equipment. And an operator performs predetermined operation with respect to the portable terminal device 20 at the time of the start of work in each process, and completion | finish. As a result, the start date and time and the end date and time of the work in each process are recorded in the mobile terminal device 20. The recorded start date and time and end date and time are transmitted to the production management apparatus 10 as information related to the performance of work performed based on the production plan.

  Information exchange between the production management device 10 and the mobile terminal device 20 may be performed in real time whenever information to be transmitted is updated or may be performed at a predetermined time. Good.

  The process analysis program 168 provides a function for analyzing the difference between the production plan and the actual result and a function for improving the work plan based on the analysis result. The process analysis program 168 includes a process analysis unit 168a and a process improvement unit 168b. The process analysis unit 168a provides a function for visualizing the difference between the production plan and the actual result on the display unit 11. The process improvement unit 168b provides a function for changing the process information 162 in order to improve work planning based on the analysis result.

  Next, the processing procedure of the production plan planning process executed by the production management apparatus 10 will be described with reference to FIGS. 6 and 7. FIG. 6 is a flowchart showing the processing procedure of the production plan planning process. FIG. 7 is a flowchart showing the processing procedure of the local optimum solution search process executed in the production plan planning process. The processing procedure shown in FIGS. 6 and 7 is realized by the control unit 15 executing the production planning program 166.

  As shown in FIG. 6, the control unit 15 first creates an initial plan based on the function provided by the initial plan creation unit 166a (step S101). At this stage, the products to be produced and the work forms of the respective processes for producing those products are determined. And the control part 15 performs the local optimal solution search process mentioned later, and acquires the suitable production plan (local optimal solution) from the initial plan by that (step S102).

  Subsequently, the control unit 15 stores the production plan searched in the local optimum solution search process in the search result information 164 (step S103). In order to save the storage capacity, the control unit 15 may store only the local optimum solution in the search result information 164 among the production plans searched in the local optimum solution search process. Further, the control unit 15 may store only the upper predetermined number of production plans in the search result information 164 in the descending order of evaluation among the production plans searched in the local optimum solution search process.

  Subsequently, the control unit 15 determines whether or not the first end condition is satisfied (step S104). The control unit 15 determines that the first end condition is satisfied in the following case. First, the control unit 15 determines that the first termination condition has been satisfied when the number of executions of the local optimum solution search process is greater than the first predetermined number. Further, the control unit 15 determines that the first end condition is satisfied when the processing time of the production planning process becomes longer than the first predetermined time. Further, the control unit 15 satisfies the first end condition when the evaluation of the production plan obtained by the local optimum solution search process is sufficiently good, that is, when the evaluation value of the production plan satisfies a predetermined condition. It is determined that The predetermined condition is, for example, that the evaluation value is 0 or that the evaluation value is less than a sufficiently small threshold.

  When the first end condition is satisfied (step S104, Yes), the control unit 15 stores the most highly evaluated production plan as the production plan information 165 among the production plans obtained by the local optimum solution search process. (Step S105). Then, the control unit 15 ends the production planning process. When the first end condition is not satisfied (No at Step S104), the control unit 15 re-executes Step S101 and the subsequent steps.

  As shown in FIG. 7, in the local optimum solution search process, the control unit 15 sets the initial plan as the current plan Pc (step S201). Then, the control unit 15 allocates resources to each process of the current plan Pc based on the function provided by the scheduler 166b (step S202), and determines the start date / time and end date / time of each process (step S203). And the control part 15 evaluates the present plan Pc based on the function which the production plan evaluation part 166c provides (step S204).

  Subsequently, the control unit 15 adjusts the probability that an order number and a process number used to create a nearby production plan are selected (step S205). Specifically, in the current plan Pc, the control unit 15 adjusts the probability so that there is a high possibility that an order number corresponding to an order whose penalty value related to shipping is larger than a threshold value will be selected. Moreover, the control part 15 adjusts a probability so that possibility that the order number and process number corresponding to the process whose penalty value regarding work is larger than the threshold value will be selected in the current plan Pc is high.

  In this way, by adjusting the probability so that the order number and process number associated with a large penalty are likely to be selected, the penalty value can be reached early in the vicinity of a small penalty, It is expected that production plans will be searched early. Note that the degree of adjusting the probability may be determined according to the order in the order of the penalty sizes or the penalty size itself.

  Subsequently, the control unit 15 selects an order number and a process number one by one from the order numbers and process numbers included in the current plan Pc based on the adjusted probability (step S206). Then, the control unit 15 evaluates the first neighborhood as follows.

  That is, the control unit 15 first creates a production plan P1 in which the work mode number of the process corresponding to the selected order number and process number is changed from the current plan Pc as the first neighborhood (step S207). The work mode number is randomly changed. When the production plan P1 can be created (step S208, Yes), the control unit 15 allocates resources to each process of the production plan P1 based on the function provided by the scheduler 166b (step S209), and the start date and time of each process And the end date is determined (step S210). And the control part 15 evaluates the production plan P1 based on the function which the production plan evaluation part 166c provides (step S211).

  When the evaluation value of the production plan P1 is smaller than the evaluation value of the current plan Pc, that is, when the production plan P1 is higher than the current plan Pc (step S212, Yes), the control unit 15 sets the production plan P1 to the current value. The plan is Pc (step S213). Then, the control unit 15 determines whether the second end condition is satisfied (step S214).

  The control unit 15 determines that the second end condition is satisfied in the following case. First, the control unit 15 evaluates all the production plans in the vicinity of the current plan Pc, but determines that the second end condition is satisfied when there is no production plan with a higher evaluation than the current plan Pc. Moreover, the control part 15 determines with the 2nd completion | finish condition being satisfied, when the frequency | count of evaluation of a production plan becomes more than a 2nd predetermined frequency | count. Further, the control unit 15 determines that the second end condition is satisfied when the processing time of the local optimum solution search process becomes longer than the second predetermined time. Further, the control unit 15 determines that the second end condition is satisfied when the evaluation of the current plan Pc is sufficiently good, that is, when the evaluation value of the current plan Pc satisfies a predetermined condition. The predetermined condition is, for example, that the evaluation value is 0 or that the evaluation value is less than a sufficiently small threshold.

  When the second end condition is satisfied (step S214, Yes), the control unit 15 ends the local optimum solution search process. When the second end condition is not satisfied (No at Step S214), the control unit 15 re-executes Step S205 and the subsequent steps. Note that the control unit 15 may repeatedly execute step S205 to step S213 until all production plans P1 having different work mode numbers corresponding to the selected order number and process number are evaluated.

  When the evaluation value of the production plan P1 is equal to or higher than the evaluation value of the current plan Pc, that is, when the production plan P1 is not higher than the current plan Pc (No in step S212), the control unit 15 performs the second operation as follows. Evaluate the neighborhood of. Also, when the production plan P1 in which the work mode number of the process corresponding to the selected order number and process number is not created, that is, when the process work mode has only one pattern (No in step S208), the control unit 15 evaluates the second neighborhood as follows.

  That is, the control unit 15 first creates a production plan P2 in which the priority corresponding to the selected order number is changed from the current plan Pc as the second neighborhood (step S215). The priority is randomly changed within a predetermined range. Then, the control unit 15 allocates resources to each process of the production plan P2 based on the function provided by the scheduler 166b (step S216), and determines the start date and time and end date and time of each process (step S217). And the control part 15 evaluates the production plan P2 based on the function which the production plan evaluation part 166c provides (step S218).

  When the evaluation value of the production plan P2 is smaller than the evaluation value of the current plan Pc, that is, when the production plan P2 is higher than the current plan Pc (step S219, Yes), the control unit 15 sets the production plan P2 to the current value. The plan is Pc (step S220). Then, the control unit 15 determines whether the second end condition is satisfied (step S214). When the production plan P2 is not rated higher than the current plan Pc (step S219, No), the control unit 15 determines whether the second end condition is satisfied without changing the current plan Pc (step S214). .

  When the second end condition is satisfied (step S214, Yes), the control unit 15 ends the local optimum solution search process. When the second end condition is not satisfied (No at Step S214), the control unit 15 re-executes Step S205 and the subsequent steps. Note that the control unit 15 may repeatedly execute Step S215 to Step S220 until all the production plans P2 whose priority corresponding to the selected order number is changed within a predetermined range are evaluated. In order to avoid delaying shipment of products that should be produced with high priority, the priority may not be lowered in step S215.

  Next, an example of a screen displayed based on the function provided by the production plan selection unit 166e will be described. FIG. 8 is a diagram illustrating an example of the production plan search screen 40. The production plan search screen 40 is displayed on the display unit 11 by the control unit 15 based on the function provided by the production plan selection unit 166e.

  As shown in FIG. 8, the production plan search screen 40 includes a horizontal axis selection item 41, a vertical axis selection item 42, a distribution display area 43, a list display area 44, and a selection button 45. The horizontal axis selection item 41 is an item for selecting an index value set as a horizontal axis in the distribution display area 43 among the index values of the production plan. The vertical axis selection item 42 is an item for selecting an index value set as a vertical axis in the distribution display area 43 among the index values of the production plan.

  In the distribution display area 43, the production plan included in the search result information 164 is mapped to a position corresponding to the index value selected by the horizontal axis selection item 41 and the index value selected by the vertical axis selection item 42. It is an area. Note that the control unit 15 may map all the production plans included in the search result information 164 in the distribution display area 43, or map a predetermined number of production plans in the distribution display area 43 in descending order of evaluation. May be.

  The list display area 44 is an area where a list of production plans included in the search result information 164 is displayed. The production plan displayed in the list display area 44 is narrowed down according to the operation on the distribution display area 43. For example, when a part of the list display area 44 such as the selection area 43 a is selected in the input unit 12, the control unit 15 displays only a list of production plans mapped in the selected area. It is displayed in the area 44. In addition, when an operation such as clicking on a symbol corresponding to each production plan displayed in the selection area 43a is detected in the input unit 12, the control unit 15 selects a production plan corresponding to the position where the operation is detected. Display / non-display in the selection area 43a is switched.

  In this way, by narrowing down the production plans to be displayed in the list display area 44 according to the operation on the distribution display area 43, the user can compare only production plans in which a specific index value is within a desired range. it can.

  When the user selects a production plan to be executed from the narrowed production plans, the user selects the selected production plan in the list display area 44 and presses the selection button 45. When pressing of the selection button 45 is detected by the input unit 12, the control unit 15 acquires information on the production plan selected in the list display area 44 from the search result information 164 and stores it as production plan information 165.

  Next, an example of a screen displayed based on the function provided by the process analysis program 168 will be described. FIG. 9 is a diagram illustrating an example of the work performance screen 50. The work result screen 50 is displayed on the display unit 11 by the control unit 15 based on the function provided by the process analysis program 168.

  As shown in FIG. 9, the work performance screen 50 includes a period selection item 51 and a list display area 52. The period selection item 51 is an item for selecting a period for analyzing results. The list display area 52 is an area in which information related to work performance in a selected period is displayed for each process. The list display area 52 displays a process number, a standard time, an actual time, a minimum value, a maximum value, and a diagram visualizing the standard time, the actual time, the minimum value, and the maximum value. In the work result screen 50, the data in the list display area 52 is changed to the order of processes, the longest standard time, the longest actual time, the longest actual time-the standard time, the longest actual time / the longest standard time. You may enable it to rearrange by. By rearranging the data in this way, it becomes easy to extract a process to be improved.

  The standard time is an average of scheduled values of work hours for each process in a selected period. The actual time is an average of actual values of work hours for each process in the selected period. The minimum value is the minimum value of the actual value of the working time for each process in the selected period. The maximum value is the maximum value of the actual value of the working time for each process in the selected period.

  In the list display area 52, the process number is displayed with an underline to indicate that it can be clicked. When a click or the like in the process number display area is detected by the input unit 12, the control unit 15, as shown in FIG. 10, how the actual value of the work time of the process in the selected period varies. A work time distribution screen 60 showing whether or not In this way, by visualizing the variation in the actual value of the work time, the user can easily determine the degree and cause of the variation. Note that the work time distribution screen 60 may display the variation in the actual value of the work time as a histogram.

  In the diagram corresponding to each process in the list display area 52, the standard time is illustrated as a symbol 52c having a predetermined shape at a position corresponding to the length of time. The actual time is illustrated as a block (graphic) 52b having a width corresponding to the length of time. The minimum value and the maximum value are illustrated as a symbol 52d having a predetermined shape straddling a position corresponding to each length of time. The block 52b, the symbol 52c, and the symbol 52d are displayed superimposed on the same scale for each process. Instead of the symbol 52d, at least one of a symbol having a predetermined shape at a position corresponding to the length of the minimum value and a symbol having a predetermined shape at a position corresponding to the length of the maximum value may be displayed. The shape of the symbol or figure may be arbitrarily changed, and each value may be changed by either the symbol or the figure.

  Thus, by superimposing a plurality of pieces of information related to work and illustrating them as a diagram, the user can determine at a glance whether or not there is a problem in the work plan of each process. For example, in the process identified by “P03”, the symbol 52c is positioned slightly to the right of the block 52b, and the width of the symbol 52d is relatively narrow. From this diagram, the user identified that the actual work time value is slightly below the planned value in the process identified by “P03”, and there is little variation in the actual work time value. It can be easily determined that there is no problem in the plan.

  When there is a process in which the width of the symbol 52d is relatively wide, it is difficult for the user to determine whether or not there is a problem in the production plan for the process. In that case, the user can refer to more detailed information regarding the process by pressing the expand / collapse button 52a displayed at the left end of the line corresponding to the process.

  When pressing of the expansion / contraction button 52a is detected by the input unit 12, as shown in FIG. 11, the control unit 15 displays information on the work results of the process corresponding to the pressed expansion / contraction button 52a. Display separately. In the example shown in FIG. 11, in the work form identified by “OP01-01” and the work form identified by “OP01-02”, the symbol 52c is positioned at the right end of the block 52b, and the width of the symbol 52d. Is relatively narrow. From these diagrams, the user can easily determine that there is no problem in the production plan for these two work modes.

  In the example shown in FIG. 11, in the work form identified by “OP01-03”, the symbol 52c is located on the left side of the right end of the block 52b, and the width of the symbol 52d is relatively wide. From this diagram, the user can easily determine that the actual value of the work time greatly exceeds the planned value and the variation is large, that is, there is a problem in the production plan, with respect to this work form.

  As described above, when it is found that there is a problem in the production plan with respect to a specific work mode, the user can change the process information 162 on the work performance screen 50. For example, as shown in FIG. 12, when the input unit 12 detects an operation to uncheck the check box 52e provided for each work form, the control unit 15 performs the work form corresponding to the check box 52e that is unchecked. The value of the valid flag in the process information 162 is updated so that is not used in the production plan.

  When an operation for rewriting the standard time value corresponding to the work mode in the list display area 52 is detected by the input unit 12, the control unit 15 uses the rewritten standard time value as the work in the process information 162. Set as the working time of the form. In this case, the control unit 15 updates the diagram of the process and work mode corresponding to the rewritten standard time.

  Thus, by updating the information that is the basis of the work plan based on the analysis result, the deviation between the scheduled value and the actual value can be reduced, and as a result, the quality of the work plan can be improved.

  In addition, the aspect of this invention shown by said Example can be arbitrarily changed in the range which does not deviate from the summary of this invention. For example, the program shown in the above embodiment may be divided into a plurality of modules or may be integrated with other programs. In the above embodiment, the local search method is used to search for a suitable production plan. However, a suitable production plan may be searched using other solution search methods. Moreover, the structure of the various screens shown in said Example can be changed in the range which does not impair a function and visibility.

  Further, in the above-described embodiment, the example in which the evaluation value is calculated so as to indicate that the smaller the value is, the more preferable the production plan is. An evaluation value may be calculated so as to indicate this.

  In the above embodiment, the production management apparatus 10 collects the start date and time and the end date and time of the work in each process as the actual result for the production plan. However, other information may be further collected. For example, when a delay occurs in work, the reason for the delay may be input to the worker, and the input reason may be collected by the production management apparatus 10. Then, the production management device 10 may totalize the collected reasons for each process and the like, show the totaled result to the user, and use it for improving the quality of the work plan.

  In the above embodiment, the production management apparatus 10 displays various screens on the display unit 11 included in the production management apparatus 10. However, the production management apparatus 10 displays various screens on other devices. It may be displayed on the part. In this case, for example, the screen is transmitted from the production management apparatus 10 to another apparatus in the HTML (HyperText Markup Language) format. In addition, the exchange of information between the production management apparatus 10 and another apparatus is executed based on HTTP (HyperText Transfer Protocol).

DESCRIPTION OF SYMBOLS 10 Production management apparatus 11 Display part 12 Input part 13 Communication part 14 Medium reading part 15 Control part 151 CPU
152 Memory 16 Storage Unit 161 Worker Information 162 Process Information 163 Shipment Schedule Information 164 Search Result Information 165 Production Plan Information 166 Production Plan Planning Program 166a Initial Plan Creation Unit 166b Scheduler 166c Production Plan Evaluation Unit 166d Production Plan Search Unit 166e Production Plan Selection Unit 167 Process management program 168 Process analysis program 168a Process analysis unit 168b Process improvement unit 20 Portable terminal device

Claims (9)

A storage unit for storing a scheduled value and an actual value of the working time of each process included in the production plan;
The first symbol or first graphic corresponding to the average value of the scheduled value for each process and the second symbol or second graphic corresponding to the average value of the actual value for each process are the same for each process. A production control device comprising: a control unit that displays the image superimposed on a scale.   The said control part displays the 3rd symbol or 3rd figure corresponding to the minimum value for every process of the said actual value further superimposed on the same scale for every process, It is characterized by the above-mentioned. The production management device described.   The said control part displays the 3rd symbol or 3rd figure corresponding to the maximum value for every process of the said actual value further on the same scale for every process, It is characterized by the above-mentioned. The production management device described.   The control unit displays a third symbol or a third figure corresponding to a range from the minimum value to the maximum value of each process of the actual value, further superimposed on the same scale for each process. The production management device according to claim 1. The production plan consists of a combination of work modes selected for each process,
The control unit includes a fourth symbol or a fourth figure corresponding to an average value of the scheduled values for each work mode selected in each process, and an average of the actual values for each work mode selected in each process. 5. The production management apparatus according to claim 1, wherein a fifth symbol or a fifth graphic corresponding to the value is further superimposed on the same scale for each work mode and further displayed. .   The production control apparatus according to claim 5, wherein the control unit changes information on the operated work form in accordance with an operation on information displayed for each work form.   The production control apparatus according to claim 6, wherein the control unit is configured not to select the operated work form in accordance with an operation on information displayed for each work form. A process analysis method executed by an information processing apparatus,
Storing a scheduled value and an actual value of the working time of each process included in the production plan;
The first symbol or first graphic corresponding to the average value of the scheduled value for each process and the second symbol or second graphic corresponding to the average value of the actual value for each process are the same for each process. And a step of superimposing and displaying on a scale. In the information processing device,
Storing a scheduled value and an actual value of the working time of each process included in the production plan;
The first symbol or first graphic corresponding to the average value of the scheduled value for each process and the second symbol or second graphic corresponding to the average value of the actual value for each process are the same for each process. A process analysis program characterized by executing a step of superimposing and displaying on a scale.

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