JPH03287357A - Arrangement program support system using high speed mrp technique - Google Patents

Abstract

PURPOSE:To plan the optimum program moreover, while drastically shortening the time required for calculation processing, by having a processing device, which processes an initial material requirements planning processing data or a partially corrected material requirements planning processing data, and the memory which stores data on a calculator system. CONSTITUTION:The judgement as to whether or not an initial set processing 210 is performed when system is started. Processing is migrated to an input and output scope display/process 220 immediately, because material requirements planning(MRP) processing data are input to a main memory or semiconductor disc device ordinarily. In the input and output scope display/process 220 data are changed with correction on an input and output processing scope. In the case of the data being judged as being corrected and changed by a judgement process 240, MRP arithmetic process 250 is performed and the arithmetic result state is displayed. Also, in the case of a changing place being judged to be the attribute data of an item, main attribute data are renewed by an attribute changing process 270.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a system that supports arrangement planning in production management, and in particular, to high-speed MRP processing and visualization of the processing results. The present invention relates to an arrangement planning support system for discovering problems with the processing results at an early stage and supporting the resolution of the problems.

[Conventional technology] One of the main functions of arrangement planning in production management is parts arrangement planning, and there are two known methods for this: order point management method and requirements development method. . The difference between these methods is that in the order point management method, the next order is only arranged when the stock of regular supplies, small items, etc. falls below a certain level of 11 (order point), but in the requirements expansion method, the next order is arranged. , the production requirements (plan) for the finished product are expanded into parts, the required amount of each part (material) is calculated in advance, and orders are placed. Therefore, in the requirements development method, parts and materials are generally ordered after a materials requirements plan (MRP) has been established. , ordering policy (
Although data such as data such as data such as data such as data on data such as data such as data on data such as data on data such as data on data such as data on data such as data on data such as data on data such as data on data such as data on data such as data on data such as lead time, lead time, etc. ).

By the way, in MRP processing, the standard production plan for each completed item is read from an external storage device, and based on this, what parts are needed, when and how many are needed, taking into consideration the component list, lead time, and ordering policy (lot summary). is now in demand. Incidentally, in conventional MRP, batch processing was performed once a week due to the slow processing time (on the order of several hours, for example), and the processing results were printed out on list paper etc. using a printer. There is.

Regarding the MRP processing method, please refer to ``rMRP theory and results'' (Author Leighton Smith, Translated by Kojima Masakatsu, Mori Masakatsu,
Published by the Japan Management Association on November 25, 1975)
It is stated in Related devices of this type include Japanese Patent Application Laid-Open No. 62264853 and Japanese Patent Application Laid-open No. 62264853.
2-285176, JP-A-1-169663, and the like.

[Problem to be solved by the invention] As mentioned above, the conventional MRP calculation process requires a lot of time. Standard production plan, component list, inventory amount, ordering policy (
This is because the amount of data regarding lot summaries), lead times, etc. is enormous, and these data are stored in external storage devices. That is, this data is stored in an external storage device and is frequently accessed by the processing device with a long access time.

Therefore, there will be problems (
When it was discovered that there was a problem (out of stock, overload, etc.), it was practically impossible to immediately obtain the processing results even if the input data was corrected and the calculations were re-calculated. . In addition, when the MRP processing results were displayed externally, only the processing results were simply printed out on list paper, etc. by a printer, so it was not only possible to determine whether there was a problem, but also where the problem occurred and where. It takes a lot of time and effort to figure out whether correcting the data would be effective, and even if corrections were found, how to correct them.

The purpose of the present invention is to significantly reduce the time required for the calculation process when performing MRP calculation processing based on MRP processing data that can be modified from the outside, and to make it possible to create an optimal plan. The purpose of this invention is to provide an arrangement planning support system using the speed-of-voice MRP method.

Another object of the present invention is to use a high-speed MRP method for arrangement planning that can easily and immediately grasp problems in obtaining optimal MRP processing results and the contents of standard production plans and planned orders. Provide a support system.

Furthermore, another object of the present invention is to provide an arrangement planning support system using a high-speed MRP method, which makes it possible to create an optimal plan while modifying MRP processing data through interactive processing.

Furthermore, another object of the present invention is to provide an arrangement planning support system using a high-speed MRP method, in which problems in obtaining optimal MRP processing results can be solved at an early stage.

[Means for solving the problem] The above purpose is to provide a computer system as an arrangement planning support system with initial MRP processing data or two-part revised MRP processing data.
It is equipped with at least a high-performance processing device that processes RP processing data and a memory that can be accessed at high speed from this processing device and that stores various programs as well as initial MRP processing data or partially modified MRP processing data. Achieved through coercion. In particular, regarding the memory, it may be configured as only a main memory with a limited storage capacity, or it may be configured as a main memory consisting of a work area and various program storage areas, and the processing unit as much as this main memory. It is specifically constructed from a semiconductor memory for storing MRP processing data which can be accessed at high speed through an interface and has a large storage capacity.

In addition, when the MRP processing results are displayed on the output device, there are problems in obtaining the optimal MRP processing results, as well as whether the standard production plan/planned order is on the vertical or horizontal axis. This is achieved by displaying the period as a graph on one axis and the quantity of each item on the other axis.

Furthermore, another purpose is achieved by having the output device specifically configured as a display, and interactively inputting correction items and correction data from the input device in accordance with the output display on the display. .

In this case, in addition to the keyboard, it is desirable for the input device to include a mouse or something similar to a mouse in order to enable various input operations on the display screen, in terms of a man-machine interface. .

Furthermore, another purpose is that when problems in obtaining optimal MRP processing results are output and displayed, data required for analysis of the problems is also output and displayed. This is accomplished by grouping items that are divided or leveled in a component bill, and displaying some of the grouped items in the output.

[Function] By using a semiconductor disk device using a large capacity semiconductor memory for storing MRP processing data instead of the magnetic tape device or magnetic disk device used as an external storage device that has been used so far, The access time is two orders of magnitude faster than before, and MR can be achieved within real time (several minutes).
The purpose is to obtain P processing results and reprocessing results. In this way, obtaining MRP processing results and reprocessing results within real time (several minutes) also requires large-capacity main memory (several tens to hundreds of Mb) instead of the conventional small-capacity main memory.
ytes or more). If only the MRP processing data is transferred and stored in the main memory before the MRP processing from among the various data conventionally stored on an external storage device, the MR
By performing the P processing at high speed, it is possible to respond in real time as in the case of using a semiconductor memory.

In addition, by using an output device with an appropriate display output type,
For example, when displaying MRP processing results in a graph (line graph, bar graph, etc.) with the period on the horizontal axis and the quantity of items (products, semi-finished products, parts, inventory, etc.) on the vertical axis, Along with this, by displaying and outputting problems in obtaining the optimal MRP processing results, not only can the contents of the standard production plan and planned orders be known at a glance, but also problems in obtaining the optimal MRP processing results can be displayed. The problems can also be easily understood.

Furthermore, when the output device is specifically configured as a display, correction items and correction data can be input interactively from the input device in accordance with the immediate output display on the display, and partially corrected MRP processing data can be inputted interactively from the input device. Based on the new M
This is possible by performing RP processing. At that time, in addition to the keyboard, if a mouse or something similar to a mouse is equipped as an input device to enable various input operations on the display screen, instructions for correction items, correction data, etc. will be sent to the screen. This can be easily done using a mouse with an image, improving the man-machine interface and making it possible to efficiently correct problems.

Furthermore, data such as items required for problem analysis, component bill, reverse component bill, lead time, ordering policy (“lot consolidation method”), etc. can be stored in the same screen (window) or in separate If displayed on the screen (window), use the - mark to indicate the contents of the standard production plan/planned order,
Problems can be identified. In addition, items (products, semi-finished products, parts, etc.) that are divided (leveled) in the component list are divided into groups, and some of them are displayed on the same screen (window) or on multiple screens (windows).
By displaying the information within the table, the impact of data corrections and changes on items at other levels can be understood at a glance, and corrections that are effective in resolving problems can be discovered at an early stage. It is.

[Example code] The present invention will be explained below with reference to FIGS. 1 to 20.

First, before specifically explaining the present invention, the MRP processing method in general will be explained using FIGS. 2 to 4.
The figure shows an outline of input/output information associated with MRP processing. As shown in the figure, the standard production plan 21 as input information includes data on what (product), by when (delivery date), and how many (quantities) are required based on the order demand forecast 20. The component list 22, which serves as additional input information, also describes what parts the finished product is composed of. In addition to the above input information, there is lead time data 23 that describes the period required from the arrival of finished products, parts, etc. to the delivery date, and ordering policy (lot summary) data 24 that describes how many batches to order.
Furthermore, the inventory status 25, the number of manufacturing works in progress 26, the number of orders remaining 27, etc. are given as input information when MRP processing is performed. Based on this input information, MRP calculation processing (a specific example of which is shown in FIG. 3) 30 is performed,
A planned order 31 is obtained as a result of the calculation process. The previous MRP processing method 33 performed the series of processes up to this point by batch processing.
It is.

Now, FIG. 3 shows an outline of MRP processing for a specific example. As shown in the figure, in this example, required quantities are developed for finished products X and Y, and as shown in the component list 22, finished product X is made from semi-finished product A and two semi-finished products B. The semi-finished product A
Also part a.

b.

Similarly, it is shown that the finished product Y is made up of a semi-finished product and two semi-finished products C, and that the semi-finished product C is also made up of parts a and C. As shown in the figure, the horizontal axis of the MRP processing results shows the period (month, week, day, hour, etc.) 28, and the vertical axis shows the items (finished products, semi-finished products, parts, etc.). It is now being taken. At that time, the value corresponding to the period O column is the inventory amount of each item 25
, △ and mu mark indicate the first arrival of each item, ○ and ･ mark indicate the delivery date of each item, and the period between the first arrival and delivery date is lead time 2.
3 respectively.

Here, as the standard production plan 21, if, for example, 50 pieces of finished product X are requested in period 13 and 20 pieces of finished product Y are requested in period 15, the lead time for finished product By this time, production of 50 units of finished product X must begin. Also, since semi-finished product A required to make finished product Since it is a period, it is necessary to start producing 50 x 2 = 100 pieces by period 5. By the way, usually the number of each item is part a
As shown in the figure, instead of ordering 50 pieces in period 3 and 40 pieces in period 5 separately, we will order 100 pieces in period 3 based on the ordering policy (lot consolidation method) as shown in the figure. , etc., and then orders are placed.

As described above, in MRP, the start date and quantity of items one level below are determined based on the standard production plan based on the component list and lead time, and the results of lot consolidation are input to the next level. The calculation process is repeated until the final level is reached. Further, the amount finally ordered is the amount obtained by subtracting the inventory amount shown in period O.

FIG. 4 shows an example where a problem occurs in the MRP processing result (planned order) 31 in FIG. 2. Generally, two types of problems may occur in the MRP processing results. The first problem is "out-of-stock", which is a period in which the start date is negative (inventory amount in period O is negative), as shown in Figure 4 (a), and the second problem is, As shown in Figure 4(b), the fabrication (
This is an "overload" situation in which you have to manufacture (order) more items than you can (order). Countermeasures against out-of-stock items include: (1) considering shortening lead times, (2) completing child parts ahead of schedule, and (2) replacing ordered items. In addition, as a countermeasure against overload,
■Replacement of shops, ■Consideration of extending lead time, ■Consideration of increasing workload, etc. are being carried out.

As mentioned above, in conventional MRP, batch processing was performed, and the processing results were simply printed out on list paper, etc., so it is difficult to determine whether or not there is a problem with the MRP processing results, if any. It was easy to see where the problem was and what needed to be corrected, and it was also practically impossible to correct the input data and perform the MRP process again. .

However, in the present invention, in order to solve the above problems,
Broadly speaking, two measures have been adopted. The first is that the MRP processing speed is further improved. Second, by visualizing the MRP processing results along with any problems, areas to be corrected can be found easily and quickly. Here, to briefly explain the main points, there are two possible methods for improving the MRP processing speed: (1) use of a semiconductor disk device, and (2) use of a large-capacity main memory.

Among these, when using a semiconductor disk device, the access time is reduced from 25 to 35 m5 to 0.35 m5, which is about two orders of magnitude faster than that of conventional external storage devices, and the input required for MRP processing is faster. Since data can be held as data that can be randomly accessed, efficient and high-speed MRP processing can be performed.

In addition, when using a large-capacity main memory, it is possible to store all the input data necessary for MRP processing, including various programs, so the performance of the processing device can be maximized and real-time processing can be performed. response, i.e., MR
This makes it possible to obtain P processing results. Moreover, if problems are displayed along with the MRP processing results at that time, it is possible to perform interactive MRP processing based on the display. As shown in FIG. 2, based on the displayed problems 32, the input information is corrected as necessary by the interactive MRP processing 34, and then the MR is performed again.
By performing P processing, it becomes possible to formulate an optimal arrangement plan.

Now, to explain the present invention in detail, FIG. 1 shows an example of the overall system configuration including an arrangement planning support system (computer system) according to the present invention. In this example, as shown in the figure, the host computer 50 having the MRP master file 57 has a system configuration in which an EWS (EWS: engineering workstation) including the arrangement planning support system is accommodated. ing.

Before specifically explaining the contents of the present invention, various overall systems according to the present invention will be explained using FIGS. 5 to 9 as follows.

That is, FIG. 5 shows a computer system for production management (for MRP processing) in a factory, which is shown for comparison with the overall system according to the present invention. As already mentioned, the amount of data required for MRP processing is enormous, so conventionally, as shown in the figure, the data is stored in an external storage device 5 attached to a host computer (large-scale computer) 50.
1, and the MRP processing 52 itself was also performed by the host computer 50. When performing MRP processing, an MRP processing request 54 is sent from the terminal device 53.
If the MRP processing 52 is sent to the host computer 50 side, the MRP processing 52 will be performed for a longer processing time on the host computer 50 side, and the processing result 55 will be returned to the terminal 53 side as a response.

FIG. '6 also shows an example of a computer system in which a system 60 of the present invention is provided in place of the conventional terminal device 52, and an external storage device 63 for storing data necessary for MRP processing is housed in this system. It is something.

Once the MRP processing data 62 is transferred from the host computer 50 side, the MRP processing is performed within the system 60 of the present invention, and the arrangement plan is elaborated.

When the examination is completed, for the modified MRP input data, only the modified portion or all the data 61 including the modified portion is sent to the host computer 50, so that data integrity is maintained. ing.

While FIG. 6 shows a computer configuration in which a host computer 50 is connected in a star (cluster) manner, FIG. It is. In this example, once the MRP processing data 62 is
must be forwarded and the MR on which the corrections have been made.
In order to maintain consistency of the P input data, the host computer 50
Something that needs to be sent back.

Also in FIG. 8, the host computer 50 is used as an MRP data server 57, 58, and the external storage device 63 attached to the system 60 of the present invention is used for storing MRP master data. In the system shown in FIG. 7, processing 56 of 1:n (an integer greater than or equal to n・2) is performed centering on the host computer 50, so each terminal 5
However, in the case shown in FIG. 8, data 66 can be exchanged between each EWS 64, and the combined unit can perform independent calculation processing. There is. Therefore, various production management tasks that were conventionally handled by the host computer are now shared between each EWS 64, and the data required between each task is handled by the network 70.
Delivery is possible via . In the case of adopting such a computer configuration, there is no need to transfer MRP processing data from the host computer, and the overall MRP processing time can be significantly shortened.

Furthermore, FIG. 9 shows a configuration in which each EWS 64 independently performs distributed processing without the need for a host computer used as a data server. Although it is thought that such a computer configuration will gradually shift in the future, it can also be said that this is a form that is more compatible with the overall system configuration according to the present invention.

The overall system configuration according to the present invention has been described above. Next, to explain the system of the present invention, that is, the arrangement planning support system itself, FIG. 10 shows the internal configuration of an example of the system 60 of the present invention shown in each of FIGS. This is what is shown.

In this case, MRP processing data stored in an external storage device 63 such as a hard disk device is stored in advance in a semiconductor disk device 110 via a processing device (main memory built-in) 100 and an interface 112 prior to MRP processing. As a result, data 1
The access time when reading and writing 13 is about two orders of magnitude faster. By the way, in personal computers, EWS, etc., 5CSI is often used as an interface with an external storage device, and reading and writing of data is performed using this interface. Now, the semiconductor disk device 1 according to the present invention
10 also uses 5C8I as the interface 112, and can be used as is in place of a conventional hard disk device. Semiconductor disk device 1
Since SC8I is used as the interface 112 in 10, its data transfer rate is approximately 1,
Although the speed remains the same at 5 Mbytes/s, since a semiconductor disk is used as the storage medium, the access time has increased from 25ms for a hard disk drive to 35ms.
ms, this is approximately two orders of magnitude faster at 0.35 m5. Therefore, MRP processing data can be stored in a randomly accessible manner, and MRP processing can be performed at high speed without wasting time.

Incidentally, to briefly explain the semiconductor disk device 110, since it is usually configured with an inexpensive dynamic RAM, battery backup and evacuation storage to the built-in hard disk device 111 are performed as a means of ensuring data non-volatility. It is now possible to

As described above, the processing device 100 can access MRP processing data on the semiconductor disk device 110 at high speed and
By performing RP processing, MRP processing results can be obtained, but the processing results can be output as an output device (generally a printer or display is used, but a display device is appropriate for immediate display). It is designed to be displayed on the display device 102 of. If there is any problem with the MRP processing results based on this display, the MRP processing data will be partially corrected and the MRP processing will be performed again. This is done interactively using a keyboard device 103 and, if necessary, a mouse device 104.

FIG. 11 also shows that in order to further speed up the MRP processing,
This shows an example in which a main memory 121 with a large capacity (for example, several tens of MBytes to several hundred MBytes) is provided in the processing device 100 instead of the semiconductor disk device 110. In addition to storing various programs in the main memory 121, MRP processing data is transferred and stored in advance from the external storage device 63 prior to the MRP processing.

Therefore, data 1 required to be exchanged with the main memory 121 by access from the MRP calculation processing/control unit 120
22, the MRP processing results can be obtained faster than in the previous case. Of course, interactive processing is also possible in this case, and other circumstances are the same as in the previous case.

FIG. 12 further shows an intermediate internal configuration between the two internal configurations described above. If the MRP processing data is so large that it cannot be stored in the main memory, or if the main memory capacity must be limited due to the price of the main memory, a part of the MRP processing data may be stored in the semiconductor disk device 110. The other circumstances are the same as in the two cases described above.

Now, returning the explanation to FIG. 1, the system configuration shown therein can already be more easily understood than the previous explanation, and no further explanation is particularly necessary. Therefore, from now on, the expansion of MRP processing data into the main memory and the MRP processing according to the present invention will be explained as follows.

That is, first of all, to explain the deployment to the main memory, let's take an example of a medium-sized factory, and the main memory capacity is about 50.
MBytes, of which 16 MBytes
tes (= 224 Bytes) as data on the number of manufactured (ordered) pieces in the standard production plan and planned order, from 10 to
Assume that 20 MBytes is allocated to the data of the component parts list and reversed parts list, and the rest is allocated to other data and program storage/work area. Also, the number of items is M = 2''~2''-'+1, and the period is N = (2''-
FIG. 13 shows a specific example in the case of '-12)/2, and FIG. 14 shows the details of the main memory contents, ie, the memory map. As shown in Figure 14, the first 4 B
ytes is the front pointer to the component bill structure data, the next 48 ytes is the rear pointer to the component bill structure data,
Furthermore, the next 2 Bytea C period adjustment offset data including exception handling flag data, remaining (NX 2) B
ytes is the number of manufactured (ordered) items for each period (
(including inventory amount). Therefore, one unit (NX2+12) Bytes (
(code image), the same data structure continues M times. Since a semiconductor disk device has data in a record format, if the above data structure is considered as a record, it can be handled in exactly the same way in a semiconductor disk device. Therefore, details of the internal data structure in the semiconductor disk device will not be described here.

Now, let's look at the structure of the previous pointer data to the component parts list in the 15th section.
FIG. 16 shows the structure of the rear pointer data. Address data for each pointer data is stored in the front pointer and rear pointer of the main memory. Since the top-level item in the component bill, i.e., the product-level item, no longer has any previous-level items, the previous pointer stores the EOP (for example, $FFFFFFFF) value (incidentally, the value at the beginning of the value The $ mark attached to
The following numbers O to 9 and A to F indicate hexadecimal numbers, and the same applies hereinafter). The data length of each pointer data is stored in the first 2 Bytes of the pointer data, and after that, the data is divided into 48 bytes, and the pointer data is also stored. This pointer data includes address data to the previous pointer in the main memory of all items on the previous level, and post pointer data contains address data to the next pointer in the main memory of all items connected to the next level. is memorized. The above is all the front pointer data, but the rear pointer data includes the attribute data of each item (product name, product number,
(type, model number, etc.) directly, or write attribute data to an external storage device such as a hard disk drive, and store address data for this (MR
The attribute data is not updated during the P processing itself, so the external storage device is not accessed based on this address data during the calculation process, and it is stored in an external storage device that has a slow access time. does not affect the overall processing time in any way). The previous pointer when the data shown in FIG. 17 is given as a component list,
The content of the pointer and the content of each pointer data are
It is shown in Figure 8. Here, in order to represent that product X is composed of two semi-finished products B, data compression is performed as described below.

In other words, the data length for one item is expressed as 2''.For example, if n=8 and the address space in this memory system is 282 (4 GB), then 2'' is required to represent the address of the previous and previous pointers in the main memory. ”/2”=2
It turns out that 24 (3 Bytes) is sufficient.

Therefore, of the 4 Bytes of address data, the first 3
Upper 3 Bytes representing the address to the pointer in Bytes
Write the tea data and write the above “
It is sufficient to write the data 2 "Product X is composed of two B's." To obtain the base address data from the previous 3 Bytes of data, first memorize the starting address $paddress of the previous pointer in the main memory, and then add ($Paddr) to the previous 3 Bytes of data.
It is sufficient to add the I Byte data of ess - $00000OFF). Therefore, while accessing the main memory in which MRP processing data is stored as the data structure described above, the MRP processing data according to the present invention shown in FIG.
If you follow the processing flow and perform the processing interactively,
The optimal arrangement plan can be easily and quickly made.

To explain about FIG. 19, start processing 200
When the system of the present invention is started up, a determination is first made as to whether or not to perform initial setting processing 210. Normally, the MRP processing data is input into the main memory or semiconductor disk device in advance, so the process immediately moves to the input/output screen display/processing 220, and the input/output processing screen shown in FIG. 20 is displayed. It looks like this. If,
If initial settings are performed, data entry processing 230
By ■ standard production plan, ■ component list, ■ (tentative)
After data on necessary items such as lead time, ordering policy (selection), etc. are input according to the instructions, MRP calculation processing 250 is performed and the process is returned to input/output screen display/processing 220. Now, in the input/output screen display/processing 220, any of the data from ■ to ■ above is corrected or changed as necessary on the input/output processing screen, but it is determined that the data has been corrected or changed in the judgment process 240. In this case, the MRP calculation processing 250 is instantaneously performed by setting a flag for the changed item or by software interrupt processing, and the calculation result status according to the processing result is displayed by the input/output screen display/processing 220. It has become so. Furthermore, if it is determined in the judgment process 260 that the changed part is the attribute data of the item, the data is changed based on the attribute data after the rear pointer data mentioned above or the address data to the external storage device. This attribute data is attribute change processing 2
It is updated by 70. Therefore, by repeating the process while correcting or changing the data ① to ② as necessary, the optimum MRP processing result can be obtained.

Now, the input/output processing screen shown as an example in FIG. 20 displays the MRP processing results more clearly, and
By clearly indicating the location where a problem occurs, it is intended to assist in easily changing, updating, deleting, etc. data when taking measures to address the problem. As shown in the diagram, in addition to product name and model number attributes for each product A1 semi-finished product B1 part C, lead time is displayed, and the horizontal axis shows the period (schedule excluding factory suspension days) taking into account the offset of each data. ), and the number of each item is plotted on the vertical axis (in the case of finished products, the number produced; in the case of parts, the number ordered). In the illustrated example, the bar graph represents the production quantity and order quantity of each item. Therefore, the bar graph of the product at the highest level represents the standard production plan, and the data from the next level onwards (particularly the bar graph representing the order amount at the part level) represents the MRP processing results. In this way, the input/output processing screen displays input data and MRP calculation processing results in an easy-to-understand manner, but it is not limited to that.For example, if the order amount of part C is concentrated during a certain period and cannot be leveled out mechanically. In order to do so, a bar graph indicating the order amount for that period is displayed to notify the worker of this fact by color, density, flashing, etc., and the display allows the worker to easily know where the problem is occurring. In addition, even for items that are not displayed, a label is attached to the problem location as shown in the figure, and by picking this label with the mouse, the data for that item will be displayed. is now easily known. Furthermore, if you use the mouse to pick the "problems" (quantity, delivery date, lot number, lead time) displayed in the form of push buttons in the screen frame, problems for all items will be investigated and the investigation will be performed. The results are now displayed. In this way, if it is found that there are some problems in the MRP processing results, several countermeasures must be taken. For example, if 200 of the 400 orders for part C on August 22nd in the diagram are moved to August 17th by dragging them with the mouse, as described in the previous processing flow, MRP calculation processing is performed and the processing results are displayed. At this time, if product A1 and semi-finished product B are composed of parts C, a corresponding change will appear in the bar graph corresponding to product A1 and semi-finished product B. In this way, if you check the visualized MRP processing results and perform MRP processing every time you modify the MRP processing data in an interactive format, you can determine the optimal standard production plan, lead time, number of lots, etc. It can be easily and quickly obtained.

[Effects of the Invention] As explained above, according to claims 1 to 3, when performing MRP calculation processing based on MRP processing data that can be modified from the outside, the time required for the calculation processing can be significantly reduced. This makes it possible to create an optimal plan while reducing the time required. Moreover, in the case according to claim 4, the optimal MRP
Problems in obtaining processing results and the contents of standard production plans and planned orders can be easily and immediately grasped.

Furthermore, according to claim 5.6, it is possible to create an optimal plan while modifying MRP processing data through interactive processing, and furthermore, according to claim 7.8, it is possible to create an optimal plan while modifying MRP processing data through interactive processing. Problems in obtaining results can be resolved quickly.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of the overall system configuration including the arrangement planning support system (computer system) according to the present invention;
Figure 2 is a diagram showing an outline of input/output information accompanying MRP processing, Figure 3 is a diagram showing an outline of MRP processing for a specific example, and Figures 4 (a) and (b) are MRP processing results. Figure 5, which is a diagram for explaining the above problem, is a diagram showing the configuration of a production management system according to the prior art, Figures 6, 7, and 8.
9 are diagrams each showing the overall system configuration according to the present invention, FIGS. 1O, 11, and 12 are diagrams each showing the configuration of the arrangement planning support system according to the present invention, and FIG. , Diagram showing the relationship between specific number of items and period, Part 1
Figure 4 is a diagram showing the expanded contents of the main memory in detail, Figures 15 and 16 are diagrams showing the structure of the front and rear pointer data to the component parts table, and Figure 17 is the diagram of the components in the example. A diagram showing a table, FIG. 18 is a diagram showing the contents of each pointer data when data in the component parts list is given, and FIG.
A diagram showing the MRP processing flow according to the present invention, FIG.
FIG. 3 is a diagram showing an example of an MRP input/output processing screen according to the present invention. 21... Standard production plan, 22... Component list, 23
...Lead time, 24...Ordering policy (lot summary), 25...Inventory status, 50...Host computer,
60... System of the present invention (arrangement planning support system),
100... Processing device, 110... Semiconductor disk device, 120... MRP calculation processing/control unit, 121...
・Large capacity main memory Figure 2 Figure (a) Missing crystal (b) 111 over Figure Figure Figure Figure 0 Figure 8 Figure 4 Figure 12 Figure 11 Figure 3 Figure 14 Figure 16 Figure 17 Figure 8

Claims (1)

[Claims] 1. An arrangement planning support system using a high-speed MRP method in production management, in which a computer system as an arrangement planning support system stores initial MRP processing data or partially modified MRP processing data. A high-performance processing device for processing, a memory that can be accessed at high speed from the processing device and that stores initial MRP processing data or partially modified MRP processing data including various programs, and initial MRP processing data, or MRP as a result of the processing performed by the processing device each time the data is partially corrected;
An output device that visually displays the processing results to the outside, and an input that inputs correction items and correction data from the outside in order to partially correct the data to be subjected to MRP processing in accordance with the display of the MRP processing results by the output device. An arrangement planning support system using a high-speed MRP method, comprising at least a device. 2. The arrangement planning support system using the high-speed MRP method according to claim 1, wherein the memory is only a main memory with a large storage capacity. 3. The memory includes a main memory consisting of a work area and various program storage areas, and MRP processing data that can be accessed as quickly as the main memory from the processing device via the interface and has a large storage capacity. 2. An arrangement planning support system using a high-speed MRP method according to claim 1, comprising a semiconductor memory for storage. 4. The MRP processing results displayed on the output device show the problems in obtaining the optimal MRP processing results, as well as the period of the standard production plan/planned order on either the vertical axis or the horizontal axis.
4. The arrangement planning support system using the high-speed MRP method according to claim 1, wherein the other axis is displayed as a graph in which the quantity of each item is taken. 5. The apparatus according to any one of claims 1 to 4, wherein the output device is a display, and correction items and correction data are inputted interactively from the input device in accordance with the output display on the display. Arrangement planning support system using high-speed MRP method. 6. Claim 5, wherein the input device includes at least a mouse or something similar to the mouse in addition to the keyboard.
Arrangement planning support system using the described high-speed MRP method. 7. Using the high-speed MRP method according to any one of claims 4 to 6, wherein when outputting and displaying a problem, data required for analysis of the problem can also be output and displayed. Arrangement planning support system. 8. Using the high-speed MRP method according to any one of claims 4 to 7, in which items to be divided or leveled in a component list are grouped, and some of the grouped items can be output and displayed. Arrangement planning support system.