JP3287067B2 - Production management device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a production management device for controlling a plurality of production lines.

[0002]

2. Description of the Related Art Conventionally, a production management system for controlling a production line in a factory in real time is generally composed of at least one lower workstation 2 for controlling equipment on the production line as shown in FIG. The upper workstation 1 is managed by the client. The lower workstation 2 is connected to a facility 3 or the like by a LAN (local area network) 4, and is connected to the upper workstation 1 by a WAN (wide area network) 5.

[0003] At least one lower workstation 2 is installed in each production line, detects data from equipment and stores it in a file, and writes the detected data to the upper workstation 1 in real time.

[0004] The data used for creating the work input sequence in the upper workstation 1 is, for example, actual data of defective quality, and when a defective quality occurs at the time of assembling at the equipment, the data is stored in a file of the lower workstation 2. The data is written to the upper workstation 1 in real time. Then, the upper workstation 1 reads the quality defect result data from the lower workstation 2 in real time, and performs a process of creating a work input sequence.

The LAN 4 for constructing a network with equipment and the like is capable of high-speed communication, is a digital line in software, and is an optical cable in hardware.

[0006] The WAN 5 is slower than a LAN, has a telephone line, etc., is general-purpose, and can construct a network in a wide range.

FIG. 2 is a block diagram for explaining the concept of the internal configuration of the upper workstation 1 and the lower workstation 2. The lower workstation 2 is connected to the equipment 3 on the production line, reads a plurality of data from the equipment 3, stores the data in a data file, and writes, in the upper workstation 1, the actual data of the quality defect which must be processed in real time. .

[0008] In the upper workstation 1, production management software 10 for performing a work input sequence and the like for determining the operation sequence of the equipment of the production line, quality management software 12 for performing statistical processing such as the quality failure result, and production management software 10, and quality management A data file 14 for processing by the software 12 or storing the processed data is on an OS (operating system). Also, the upper workstation 1
After reading the quality defect performance data in real time,
The processing is performed by the production management software 10 to create a work input sequence.

FIG. 3 is a block diagram for explaining the concept of the OS 16 and the data file 14 of the upper workstation 1 and the lower workstation 2.

The data file 14 includes a logical data 28 in which data from the facility 3 or data processed by application software is stored, and a data management file 30 for storing information such as the number of data.

The OS 16 includes a basic OS 26, an OSI (operation system interface) 24, and a BASE
(Base) 22 and SKI (software kit interface) 20.

The basic OS 26 is at the bottom of the software hierarchy and is used to recognize external data from hardware as software, and performs direct control of hardware.
BASE 22 is the logical data 2 on the software.
8 and the data management file 30 are directly handled.
The OSI 24 provides an interface between the basic OS 26 and the BASE 22. The SKI 20 is connected to the BASE 22, processes an instruction from the application software, and
The data is supplied to the ASE 22 or the data from the BASE 22 is passed to the application software.

FIG. 4 is a flowchart for creating a work input sequence by the production management software of the upper workstation.

To create the work input sequence, first, a production plan file is read from logical data (S10). The quality defect result data is read from the lower workstation 2 in real time and the defect number is added to the planned production number (S1).
1).

Next, a work input order creation file is read from the production management software (S12), and a work input order is created (S13).

As described above, in the conventional production management apparatus, the upper workstation and the lower workstation are connected to the WAN.
By using, we were able to construct a network in a wide field and perform real-time processing. However, a disadvantage of a network using a WAN is that a W
The AN takes longer communication time, and if there is data with a high access frequency, the work input order data cannot be transmitted to the lower workstation within the required time. Therefore, the higher-level workstation cannot perform real-time processing, causing the production line to stop.

[0017]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a production management apparatus capable of detecting data with a high access frequency to an upper workstation and performing real-time processing even on a network using a WAN. It is in.

[0018]

According to the present invention, there is provided a production management apparatus comprising a higher-order control processing device and at least one lower-order control processing device. History data with high access frequency to
A logical data access frequency history file for storing data,
Reading the logical data access frequency history file
And the average access time per data and per unit time
The access frequency is calculated as the access frequency,
And access frequency detecting means for the access frequency to control the processing device detects high data, to change the processing of high access frequency to be detected by the access frequency detecting unit data from the host control processor to the slave control processor Processing change means.

[0019]

The production management apparatus of the present invention thus configured operates as follows.

The access frequency detecting means detects the average access time of data with the lower control processor and the number of accesses per unit time by the upper control processor.

The processing change means changes the state in which the higher-level control processor reads and processes data from the lower-level control processor to the processing in the lower-level controller only for data having a high access frequency.

Therefore, the higher-level control processing device can distribute the frequently accessed data to the lower-level control processing device even if the frequency of access to the lower-level control processing device increases. The control processing device can perform real-time processing, and the production line does not stop.

[0023]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a production control system according to the present invention.

The production control device of the present invention is the same as that of FIG. 1 described in the conventional example, in which the upper control processor is the upper workstation 1 and the lower control processor is the lower workstation 2. It comprises at least one lower workstation 2 for controlling the equipment on the production line and an upper workstation 1 for managing the lower workstation 2 in an integrated manner. Also, lower workstation 2
Is connected to the facility 3 and the like by the LAN 4 and is connected to the host workstation 1 by the WAN 5.

At least one lower workstation 2 is installed in each production line, detects data from the equipment and stores it in a file, and writes the detected data to the upper workstation 1 in real time.

Data processed by the upper workstation 1 is stored in a file of the lower workstation 2 and written to the upper workstation 1 in real time. Then, the upper workstation 1 reads the data from the lower workstation 2 in real time, and performs processing such as creation of a work input sequence.

FIG. 5 is a block diagram for explaining the concept of the internal configuration of the upper workstation 1 and the lower workstation 2. As shown in FIG.

The upper workstation 1 has a production management software 10, a quality management software 12, and a data file 14 on an OS 16. The OS 16 detects the frequency of access to data from the lower workstation 2 and creates a file of frequently accessed data in the upper workstation 1. When the lower workstation 2 detects that a frequently accessed data file has been created inside the upper workstation 1, the quality management software 12 in the lower workstation 2 starts processing the frequently accessed data. Then, since the upper workstation 1 issues a logical data update request at regular intervals, the data processed by the lower workstation 2 is transmitted at that time.

FIG. 6 shows the OS of the upper workstation 1.
FIG. 2 is a block diagram illustrating the concept of the data file 16 and the data file 14.

The file data 14 includes logical data 28 such as data processed by application software,
Data management file 3 which is information such as the number of logical data
0, a logical data access frequency history file 34 which is history data having a high frequency of accessing logical data to the lower workstation 2, virtual logical data 36 which is data having a high frequency of access to the lower workstation, and virtual logical data. It consists of virtual logical data registration 32 for registering the determined data.

The OS 16 of the upper workstation 1
Basic OS26, OSI24, BASE22, SKI20
Consists of

The basic OS 26 is at the bottom of the software hierarchy and is used to recognize external data from hardware as software and directly control hardware.

The BASE 22 includes logical data 28, a data management file 30, a logical data access frequency history file 34, virtual logical data 36, and virtual logical data registration 32.
Control the input and output of Further, the BASE 22 always detects the access frequency of the logical data to the lower workstation 2, and processes the data having a high access frequency as the virtual logical data 36. The data processed as virtual logical data by the BASE 22 includes, for example, quality defect result data necessary for creating a work input sequence. After deciding to process the quality defect record data as virtual logical data, the BASE 22 refers to the quality defect record data in the virtual logical data when creating the work input sequence. The quality defect result data in the virtual logical data is updated by the lower workstation 2 at regular intervals.

The OSI 24 is composed of the basic OS 26 and BASE2
Interface between the two.

The SKI 20 is connected to the BASE 22, processes instructions from application software, and
22 or the data from BASE 22 is passed to application software.

FIG. 7 shows the OS of the lower workstation 2.
FIG. 2 is an internal block diagram for explaining the concept of the data file 16 and the data file 14.

The file data 14 includes logical data 28 such as data processed by application software,
Data management file 3 which is information such as the number of logical data
0, a virtual logical data registration 32 for registering data determined as virtual logical data in the upper workstation 1.

The OS 16 of the lower workstation 2
Basic OS26, OSI24, BASE22, SKI20
Consists of

The basic OS 26 is at the bottom of the software hierarchy and is used to recognize external data from hardware as software, and performs direct control of hardware.

The BASE 22 controls input / output of the logical data 28, the data management file 30, and the virtual logical data registration 32. When the BASE 22 detects that the virtual logical data 36 has been created inside the upper workstation 1, the BASE 22 registers the data in the virtual data registration 32. Then, the BASE 22 processes with the application software in the lower workstation 2 and stores it in the logical data 28 only for the processing of the data registered as the virtual data. For example, if it is determined that the high-quality work result data is to be processed as virtual logical data by the upper workstation 1, the quality management software in the lower workstation 2 processes the quality defect data, and the quality in the virtual logical data of the upper workstation 1 is reduced. The failure result data is updated by the BASE 22 of the lower workstation 2 at regular intervals.

The OSI 24 is composed of the basic OS 26 and BASE2
Interface between the two.

The SKI 20 is connected to the BASE 22, processes instructions from application software, and
22 or the data from BASE 22 is passed to application software.

FIG. 8 is a flow chart in which the upper workstation 1 accesses the lower workstation 2 with the actual quality defect data.

The BASE 22 receives an instruction to read the quality failure result data from the SKI (S20), searches the data management file 30 for the location of the data (S21), and makes a determination (S22). If the actual defect data is in the upper workstation 1, the actual defect data is read from the logical data 28 or the virtual logical data 36 of the upper workstation 1 (S25). If the actual defect data is in the lower workstation 2, the lower workstation is read. 2
The logical data is requested to the OSI of the lower workstation 2 (S23), and the quality defect result data is read from the logical data 28 of the lower workstation 2 (S24). The quality defect result data is set in BASE 22 of the workstation where the quality defect result data exists (S26). The logical data access frequency history file 34 is updated when the poor quality achievement data is set to BASE22 (S2
7), the actual data of the quality defect is the upper workstation 1.
(S28).

FIG. 9 is a flowchart for determining virtual logical data of the upper workstation 1.

BASE 22 of upper workstation 1
Reads the logical access frequency history file 34 (S3
0), the average access time for each logical data and the number of accesses per unit time are calculated as an access frequency value (S31). Further, the BASE 22 registers, in the data management file 30, data having a high access frequency and having data in the lower workstation 2 as virtual logical data (S32). At this time, the BASE 22 determines whether the data has already been registered (S33), terminates the processing if the data has been registered, and writes the virtual logical data management signal to the lower workstation 2 if the data has not been registered. Inform station 2 that the virtual logical data has been obtained.

By the above processing, the upper workstation 1 can process the frequently accessed data by the lower workstation 2 and handle it as the virtual logical data 36. Therefore, the operation rate of the production line increases and the data amount increases. Real-time processing will not be possible and the production line will not stop.

[0048]

As described above, according to the present invention, data having a high access frequency is subjected to lower control processing by access frequency detecting means for detecting data having a higher access frequency to the lower control processor than the higher control processor. Since the processing is performed by the apparatus and the data management is changed to the higher-level control processing apparatus, even if the operation rate of the production line increases and the data amount increases, real-time processing can be performed without stopping the production line.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a production management device according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining a concept of an internal configuration of an upper workstation 1 and a lower workstation 2.

FIG. 3 is a block diagram for explaining the concept of the OS 16 and the data file 14 of the upper workstation 1 and the lower workstation 2.

FIG. 4 is a flowchart for creating a work input order by production management software of an upper workstation.

FIG. 5 is a block diagram for explaining the concept of the internal configuration of the upper workstation 1 and the lower workstation 2.

FIG. 6 is a block diagram illustrating the concept of the OS 16 and the data file 14 of the upper workstation 1.

FIG. 7 is a block diagram illustrating the concept of the OS 16 and the data file 14 of the lower workstation 2.

FIG. 8 is a flowchart in which the upper workstation 1 accesses the lower-quality workstation 2 to record the quality defect result data.

FIG. 9 is a flowchart of determining virtual logical data of the upper workstation 1.

[Explanation of symbols]

1 ... upper workstation, 2 ... lower workstation, 3 ... equipment,
4 ... LAN, 5 ... WAN,
20 ... SKI, 22 ... BASE,
24 ... OSI, 26 ... Basic OS,
32: virtual data registration, 34: logical data access frequency history file, 36: virtual logical data.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G05B 15/00-15/02 G06F 17/60 B23Q 41/00

Claims (1)

(57) [Claims] 1. A production management system comprising a higher-level control processing device and at least one lower-level control processing device, wherein a high frequency of access to the lower-level control processing device is obtained.
Logical data access frequency history file that stores history data
And the logical data access frequency history file
And the average access time per data and per unit time
The access frequency is calculated as the access frequency,
And access frequency detecting means for the access frequency to control the processing device detects high data, to change the processing of high access frequency to be detected by the access frequency detecting unit data from the host control processor to the slave control processor A production management device comprising: a processing change unit.