JPS6374558A - Creating device for schedule - Google Patents

Abstract

PURPOSE:To create a schedule approaching to the actual condition, by providing the information of an unusable production device to be listed and used and checking a number of sets of use of the production devices when the time of a timer, provided in a program, is updated. CONSTITUTION:An information input part 1 reads the bit of information from a console 5 or a file 4 to be fed to a schedule part 2 adding the correction and the bit of information for scheduling of number of unusable sets of production devices, time band, operation start, end time, etc. The schedule part 2, using these bit of information to plan a schedule, creates a list including the information of assigning use of the production devices. And the result is output to the console 5 and a printer 6 via an output part 3. In this way, the more realistic result is obtained including the information of an unusable time band of the production devices.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to operational management in facilities that use equipment or personnel, and in particular, when the equipment or personnel are temporarily unavailable due to equipment failure, maintenance, or the absence of a person in charge. This contributes to planning for the effective use of the equipment or personnel in the event that the equipment or personnel become unusable.

Regarding the problem of conventional technical schedule creation, attempts to create a schedule creation device using a procedural language such as Fortran have difficulty incorporating sufficient functionality due to the difficulty of logical description. Recently, attempts have been made to create more flexible devices using artificial languages. In particular, 1ded Technol, creator of a schedule creation device using forward reasoning language (1985)
It is described on pages 36 to 39.

The schedule creation device has a clock function that advances by a fixed amount of time and a list that records the usage status of the device from moment to moment, and this list is used to decide when to start using a certain device at a certain time. The device to be used is determined in turn as the clock ticks inside.

Problems to be Solved by the Invention The above-mentioned conventional techniques are difficult to use in practical terms because they do not handle maintenance of each device or situations in which the device cannot be used due to trouble. An object of the present invention is to provide a schedule creation device that can accurately create a schedule even under the above circumstances.

Means to solve the problem When updating the time of the timer that the schedule creation device has in the program, a production device is assigned to the production process that is waiting for execution, but the unusable time period and the number of unusable production devices , and information on the use end time of the currently running production equipment in the form of a list, and by using them to check the number of used production equipment, a schedule creation device having the above-mentioned functions can be obtained. .

Function: This system has information on unusable production equipment entered by the process manager as a list, and when checking the availability of production equipment when each timer in the system is updated, the currently applicable production equipment is checked. It is also checked whether the production equipment is usable and, if the relevant production equipment is operated, whether the production equipment will run into an unusable time period in the future and become unusable. When encountering an unusable time period, the availability of the relevant production equipment is checked not only by the number of unusable production equipment during the unusable time period, but also by the end-of-use time of the relevant production equipment that is currently in use. This information must also be listed and taken into consideration. In the manner described above, a more realistic result containing information on the unusable time period of the production equipment can be obtained.

Embodiments Hereinafter, specific embodiments will be described based on the drawings. FIG. 1 schematically shows the configuration of the present apparatus. The information input section 1 reads the information from the Conreel 6 or the file 4, adds information such as corrections, the number of unavailable production devices for scheduling, time zone information, and operation start and end times, and sends the information to the schedule section 2. The schedule unit 2 uses this information to create a schedule and create a list containing information on allocation of production equipment.

The results are then outputted to the Conreel 5 and printer 6 via the output section 3.

FIG. 2 shows a more detailed explanation of the process flow when manufacturing the schedule creation device shown in FIG.
The information input unit includes the time setting manual 104 for starting and ending the operation, and the schedule creation unit includes the time output unit 115. The schedule creation device is operated and process data is inputted 101 from the file 106 and the conreel 106 into the schedule creation device. Input data is corrected 102 in response to input errors or additions, deletions, or changes in processes. After that, input information on unusable production equipment 103
Then, input 104 of information on the operation start time and operation end time of the production factory and research facility is performed. Now that the preparations are complete, we can start creating the schedule. This scheduling device is
It has a simulation clock inside that ticks by a fixed amount of time, and the schedule is set up in order as the clock progresses.

First, initialize the clock to match the start time of the day.
0 completed. Next, find the production process that starts at the beginning of the day's production processes for all products, set it to the execution start waiting state 108, and select one of the production processes in the execution start waiting state 108.
One is selected (109), and a check (110) is made as to whether the production equipment required for that production process is available. At that time, not only whether the relevant production equipment can be used at the current time, but also if the usage of the relevant production equipment has started at the current time,
Check 110 must be performed, taking into account whether or not the service will be unavailable in the future. This problem will be explained in detail using FIGS. 3, 4, and 5.

Now, if the Todoroki production equipment is determined to be unusable, then...
1 from the production process that is waiting to start execution after returning to the hospital before delivery.
One is selected 109 and the usability of the production equipment required for the corresponding production process is checked 110. If there are no production processes waiting to start execution and selection 109 becomes impossible, the process jumps to the step 113 of checking whether one day's worth of production processes has ended or whether it is still the operation end time. If the production equipment is usable, start processing 111 so that the production process next to the production process in question will be in the execution start waiting state at the execution end time of the production process in progress.
Set. If there is a production process that has not been selected 109 at the relevant time, a new production process is selected 109 from the production processes waiting to start execution. However, if the availability of production equipment for all production processes waiting to start execution has already been checked (110), it is determined (113) whether the -day's production processes have been completed or whether the operation end time has come. . If neither is the case, the clock time is advanced by a certain period of time in update 114, and the above operation is repeated for a new production process that is in the execution start waiting state. If the production process for -day ends 113 or the operation end time has come, the schedule result is output 116. The above is the explanation of FIG. 2, which outlines the operation of the schedule creation device.

3, 4, and 5 are detailed explanations of the production equipment availability check 1100 portion of FIG. 1. However, here we will focus on one type of production equipment (this will be referred to as "Equipment D").
Let's call it. ), the number of devices will be assumed to be three.

First, let's look at a situation where no equipment is operating at the current time (Figure 3). For example, assume that the unusable time period and the number of devices are given by unusable areas 201 to 203. Now, in this situation, the device can be used continuously for 150 minutes. However, assuming that one device is in use at the current time (Figure 4), how many minutes can the device continue to be used from the current time, depending on when the device in use ends? It's going to change. For example, if the device in use is finished within 100 minutes, that is, before the second unusable area, the device can be used continuously for 150 minutes from the current time. However, the equipment in use is
If the process is not completed within 00 minutes, the device can only be used continuously for 100 minutes from the current time. Furthermore, if two devices are in use at the current time (FIG. 5), the continuous usable time of the devices from the current time varies in a complicated manner depending on the end time of each device.

FIG. 6 shows a situation in which the production equipment in use at the current time (this will be referred to as "equipment D" following FIG. 3) will end its use in 80 minutes. However, the unusable time period and the number of unusable devices are given in the unusable areas 301 to 303, respectively, and the number of devices is 3.
It is assumed that it is a stand. The explanation will be made below using FIG. 6 as an example. In this example, one device D can be used continuously for 160 minutes from the current time, but in order to determine this, it is sufficient to include two pieces of information shown in FIGS. 7 and 8 in the program.

FIG. 7 is an unusable area list that collects information on the unusable time period of production equipment and the number of unusable production equipment in the corresponding time period, including equipment name 401, number of equipment 402. Number of unusable units: 403. Unavailability start time 404. It is made from the data of the unusable end time 406. For example, this list of unusable areas 301 is [device, 3, 1.50,
76].

FIG. 8 is a list for monitoring the usage status of production equipment, including equipment name 601. Number of devices: 502. It consists of the usable number 503 of the relevant devices at the current time and a list of variables. Variable 1 (504) in the variable list is the number of production equipment that is in use at the current time and will be finished using before entering the first equipment unavailable time. For example, in Fig. 6, the number of devices in use at the current time whose end time is within time zone 1 (30 ends),
In this case it is 0. Variable 2 (505) is the production equipment that is in use at the current time and will end its use between the start of the first equipment unusable time period and the start of the second equipment unusable time period. This is the number of vehicles. For example, in Figure 6, the device being used at the current time,
The end time is the number of times in time zone 2 (308), which in this case is 1. In this way, in general, the variable N
is a certain production equipment in use at the current time (
Since the beginning of the N-1)th device unavailable time period, N
This is the number of applicable production equipment that will be out of use before the start of the th equipment unavailable time period. This list is utilized when checking whether the relevant production equipment can be used continuously for a certain amount of time at the current time.

FIG. 9 is a conceptual diagram for checking whether a certain production device can be used continuously for a certain period of time at the current time. Using the list shown in FIG. 7, the number of usable production devices at the current time is first checked 601. If 0
If there is one, it is impossible to start using it, but if there is one or more, this check passes and the next check is performed. Next, the usage end time of the relevant production equipment that you are about to start using is
Before the first unusable time period of the relevant production equipment begins,
A check 602 is made to see if this is not the case. If it is before the start, of course it is possible to start using it, and if it is not before, it is checked 603 whether the corresponding production equipment can be used during the first unavailable time period. That is, when the number of usable machines in the first unusable time period is ○, the corresponding production equipment cannot be put into use, but when the number of usable machines is 1 or more, this check passes and the next check is performed. Next, check 604 whether or not the usage end time of the relevant production equipment that is about to start usage is before the second unusable time period starts.
do. From now on, repeat the above operation to proceed with the usability check.

FIG. 1o represents the procedure for putting production equipment into use at the current time. If the usage end time of the applicable production equipment that is to be used is between after the start of the N-1st unusable time period and before the start of the Nth unusable time period, increase the variable N by one 703 Of course, the number of machines that can be used at the current time is decreased by one 702. FIG. 11 shows the procedure of operations to be performed when the use of the production equipment is finished. Set the number of devices available at the current time to 1
706o You can see why it is subtracted from variable 1 by looking at Figure 8a.

FIG. 12 shows the operating procedure when the timer has elapsed and the start time of the unusable time period for a certain production device has arrived. The usable number of production equipment decreases by the amount of unusable equipment 802, and the Nth unusable time period becomes the N-1st, so variable N is entered in the position of variable N-1, and the last variable N
Assign 0 to L803゜This results in the 12th
The variable columns in the diagram will be shifted forward one by one. In other words, if the end of use of a certain production equipment falls within the unusable time period -
Even if it is between the start time of 1 and the start time of the unusable time zone, if time passes and the unusable time zone comes just before the start time of -1, the use end time zone of the production equipment belongs to time zone 1. This is the reason why the variable 1 was reduced by one in Figure 7b.

FIG. 13 shows the procedure when the unavailable time period ends.

We proceed with the schedule while keeping the usable number at 805 degrees or more, returning to the original number by the number of unusable machines.

The above mechanism can be easily extended to cases where product production is prioritized. First, a schedule is created for the production process of the product with the highest priority, and the production equipment used and the time period in which it is used are designated as unusable areas in the production process of the product with lower priority.

As described above, scheduling can be performed while specifying the usage time period of the production equipment used as the unusable area in the order of product processes with higher priority.

This system is particularly applied to creating equipment usage schedules for semiconductor processes that require complex production processes.

Effects of the Invention According to the present invention, the unusable time period of the production equipment is taken into consideration.
As production equipment usage schedules are established, results closer to reality can be obtained.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the basic configuration of the system of the present invention, Figure 2 is a diagram showing the basic operation flow of this system, and Figure 3 is a diagram showing the case where there is no production equipment currently in use. A diagram showing an example of how to check the possibility of starting the use of production equipment. Figure 4 is a diagram of how to check the possibility of using the corresponding production equipment when there is only one production equipment currently in use. Figure 5 is a diagram showing the possibility of starting the use of the production equipment currently in use. Figure 6 shows the possibility of using the production equipment when there are two production equipments in use. Figure 6 shows the possibility of using the production equipment when there is only one production equipment in use. Figure 9 is another example of a diagram used to explain Figures 4 and 5, and Figure 9 is a diagram showing a checking method when deciding to start using production equipment. Figure 10 is a diagram showing operations at the start time of the production equipment usage, Figure 11 is a diagram showing operations at the end time of the production equipment usage, Figure 12 is a diagram showing operations at the start time of the equipment unusable time. FIG. 13 is a diagram showing the operation at the end time of the device unavailable time period. 1...Information input, 2...Scheduling, 3...Result output, 4...File, 5...Conreel, 6... ...Printer, 101...Data input, 102...
...Modify, 103...Information input, 104...
...Time setting, 105...File, 106
...Conreel, 1oA...Initialization,
108... Execution wait setting, 109...
Select, 110...Check, 111...
・Processing start, 112...Waiting for use or not, 113
・・・・・・End of yen, 114...Time update, 116...Result output, 201-203...
...unusable area, 204-206...unusable area, 207-210...occupied area, 21
1-213...Unusable area, 214...
...Occupied area, 301-303...Unusable area, 304-306...Occupied area, 307...
...Time zone 1.308...Time zone 2.30
9...Time zone 3.310...Time zone 4
．． 401...Device name, 402...Number of devices, 403...Number of unusable devices, 404...
... Unusable start time, 406... Unusable end time, 406... Unusable area list, 6
o1...Device name, 502...Number of devices, 503...Number of devices available at current time, 50
4...Variable 1.506...Variable 2.5
06...Variable 3.607...Variable 4.
508...Device usage information list, 601.60
3.605・・・・・・Quantity check, 602.604
...Time check, 606... Usable, 607... Not available, 701... Start, 702... Number change, 703.・・・・・・
Variable change, 704...End, 705...
・Number change, 706...Variable change, 801...
...Start, 802... Change in number of units, 803.
... Variable change, 804 ... End, 805
・・・・・・Change in number of units. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
0 Figure 2 Figure 7 d Oh! List of shields and shields Figure 9 Figure 10 Figure 11 Figure 12 Figure 13

Claims (1)

[Claims] In creating a schedule for planning the operation of equipment or personnel, a time measuring means, a first storage means for the number of each said equipment or personnel, a second storage means for usage information of said equipment or personnel, use of said equipment or personnel. A third storage means is provided for the number of unusable items and an unusable time period, and the information is stored in the second storage means each time the time is updated. Using information on the use end time of the equipment or personnel being used at the current time, for each equipment or personnel, the number of equipment or personnel stored in the first storage means is stored in the second storage. a first step of obtaining a result of subtracting the number of devices or personnel in use during the period of unavailability from the number of devices or personnel in use during the period of unavailability stored in the first period; a second step of determining that the device or personnel is unusable even during the unusable time period if the value is reached is repeated in the order of start time for the unusable time period, and repeating the first step a plurality of times in the repetition. If at least one of the results is other than the specified value, it is determined that the device or personnel cannot start using it, and the other devices or personnel are stored in the second storage means as being able to start using it. A schedule creation device characterized by changing usage information of.