JP2002094300A - Lot managing system and its controlling method and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lot managing system, its controlling method and a computer readable recording medium for realizing that control in which quality information can be provided at high speed and troubles can be dealt with in advance by managing quality information from components constituting a unit to operational information of the system centrally. SOLUTION: The lot managing system comprises means for collecting the lot number information imparted to respective components constituting a unit at least in a unit assembling process by character recognition, means for storing component information containing the collected lot number information and quality information indicative of the characteristic values of each component corresponding to the relevance lot number provided from a component manufacturer, and means performing quality management through cooperation of the lot number information and the quality information corresponding to the relevant lot number.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lot management system, whereby quality information from parts constituting a unit to system operation information is centrally managed, thereby speeding up the provision of quality information and coping with failures in advance. The present invention relates to a lot management system, a control method thereof, and a computer-readable recording medium for realizing the control.

[0002]

[Prior art]

[0003] In factories, a so-called lot production system is often adopted in which a batch (lot) is produced as a unit of product production or shipment in a fixed period.

FIG. 21 shows a configuration diagram of the prior art. In the figure, a lot management system 101 is configured such that an information collection device 102, a quality information storage device 104, and a quality management device 103 share information via an intranet 105. In addition, information including ordering information is shared with the component maker 7, the user (device sales maker) 8, and the final user 9 via the Internet 6.

[0005] In a factory equipped with the lot management system 101, the parts acceptance inspection section 121 and the unit assembly line 1
22 and an apparatus assembly line 123. The component acceptance inspection section 121 collects the component drawing number and the lot number assigned to each component by, for example, a character recognition device for the electronic components mounted on, for example, a printed board delivered from the component maker 7. In addition, the quality of the component is checked based on quality information indicating the characteristic value of each component corresponding to the lot number provided as paper data or electronic data from the component maker 7. The lot number given to each part and the quality information of each part corresponding to the lot number provided by the part maker are stored in the quality information storage device 104 by manual or automatic input processing as part information. You.

In the unit assembly line 122, for example, predetermined electronic components are mounted on a printed board to form a printed board unit, and the lot number and test result information of the printed board unit are manually or automatically input as unit information. Is stored in the quality information storage device 104.

In the device assembly line 123, each unit constituted by the unit assembly line 122 is assembled to constitute a device, and the lot number and test result information of the device, the test result of the key management unit such as a disk device, etc. Are stored in the quality information storage device 104 by manual or automatic input processing as device information.

Further, system development information including an application program created in system development provided as paper data or electronic data by a user (device sales maker) 8 is stored in the quality information storage device 104 by manual input or automatic input processing. It is memorized.

[0009] Further, system operation information including system failure contents provided as paper data or electronic data from the last user 9 is stored in the quality information storage device 104 by manual input or automatic input processing.

[0010] That is, as shown in FIG. 22, in the parts receiving process, the quality information is obtained by performing a receiving inspection and performing a part number for each part including a lot number including a part drawing number and a version number, and inspection result information. To accumulate. In the unit assembling process, a unit test is performed to accumulate only unit information for each unit including a lot number including a unit drawing number and a version number, and test result information. In the equipment assembly process,
An assembly test is performed to accumulate only device information for each device including a lot number including a device drawing number and a version number, test result information, and a test result of the priority management unit. Further, in the system development step, only system information is stored. Further, in the system maintenance process, only the system operation information is accumulated.

The quality control device 103 responds to the occurrence of a failure and creates quality control data from the input unit 133 for each of the component information, unit information, device information, system development information, and system operation information stored in the quality information storage device 104. Instruct the execution of quality control related processing such as
The processing instructed by the arithmetic control unit 131 is executed, and the output unit 1
The processing result is output to 34. The operation control unit 131 is controlled by the control program 135.

As shown in FIG. 23, the character recognition device that collects the part drawing number and the lot number described above includes a host personal computer 172 that exchanges data with the host personal computer 171 and executes image control, and a mechanical computer. A sequencer 173 for executing control, a robot controller 174, and an image processing device 177 are used as control blocks. Therefore, when a system change or control change is performed, the four blocks are changed.

FIG. 24 shows an example of an overall schematic flowchart of the lot management system. The reference numerals refer to FIG. In step S101, the parts acceptance inspection department 1
The component 21 performs a component acceptance inspection, reads an image of a component drawing number and a lot number including a version number, and accumulates component information including inspection result information in the quality information storage device 104.

In step S102, the unit assembly line 122 mounts predetermined electronic components on the printed board, performs a printed board unit test in step S103, and in step S104, a lot number including a unit drawing number and a version number; The test result information is stored in the quality information storage device 104.

In step S105, the device assembling line 123 assembles the device. In step S106, the device assembling test is performed. In step S107, the lot number including the device drawing number and the version number, the test result information, and the priority management The unit test results are stored in the quality information storage device 104.

In step S108, an application program is created by the user (device sales maker) 8, and the user 8 stores system information including the application program created in step S109 in the quality information storage device 104.

Further, in step S 110, system operation information including the contents of the system failure of the last user is stored in the quality information storage device 104.

[0018]

As described above, the prior art has the following problems.

With respect to the electronic components mounted on the printed board, the quality of the components is checked by receiving inspection of the electronic components. For this reason, a lot of man-hours are generated in the quality check, and at the same time, the production lead time is lengthened.

The provision of quality results to the user (manufacturer of the device) includes only the test result of the printed board unit, the test result of the completed device, and the test result of the key management unit such as a disk device. For this reason, quality information at the level of electronic components such as an LSI mounted on a printed board unit is not provided.

Therefore, when a lot failure occurs in an electronic component such as an LSI mounted on the printed board unit, it is not possible to specify the printed board unit to be subjected to the failure.

In addition, regarding a product that has been shipped non-defectively in the process of the assembly maker, it is not possible to take a precautionary measure against the failure until a failure occurs at the end user who uses the product.

Further, in the case of character recognition of a stamped character written on an electronic component, the contrast difference between the stamped character and the electronic component base material is small, and an accurate binary file for character recognition cannot be generated. That is, in character recognition in generating a binarized file, image deterioration becomes severe. In addition, color unevenness and engraved characters cannot be recognized.

[0024] In addition, it is difficult to recognize the stamped characters of the electronic components mounted on the printed board unit because the fonts and the stamping methods are different depending on each component maker. For this reason, it is conceivable to individually manage image data for each component maker. However, in this case, the image data becomes enormous and data management becomes difficult.

Further, in the case of character recognition of a seal character written on an electronic component, a registration operation for generating a character registration for a character recognition occurs. For this reason, when the work is performed by the character recognition device, the downtime of the equipment becomes long.

Further, in the character recognition device, in terms of device control, the robot NC, the image processing device, the sequencer, and the mechanical mechanism are controlled. However, in this configuration, it takes time to change the system or control. Further, it is difficult to centrally manage data with a dedicated image processing device, a robot, and a sequencer. Also, it is difficult to accumulate character data and captured image data in the OCR character recognition result.

[0027]

In order to solve the above problems, the present invention employs the following means.

Means for deleting the parts acceptance inspection work and collecting the lot number information assigned to each of the parts constituting the unit in the unit assembling process by character recognition, the collected lot number information and the provision from the part manufacturer. Means for storing part information including quality information of each part corresponding to the lot number to be performed, and means for performing quality management in cooperation with the lot number information and the quality information corresponding to the lot number. A lot management system provided with:

By taking the above means, the number of work steps can be reduced by eliminating the part inspection work. Also, by eliminating the inspection time, it is possible to shorten the lead time of the inspection process. In addition, it is possible to centrally manage the lot numbers and quality information of parts.

Further, when recognizing the lot number, the character recognizing device takes in a gray scale image of a character having a small contrast difference and executes a pattern matching process.

By adopting the above-mentioned means, since the binarized file is not used, the character recognition rate is improved, and at the same time, it is possible to recognize the engraved character which is difficult to recognize.

Further, when recognizing a lot number, the character recognition device performs character recognition by controlling color unevenness and engraved characters using an oblique light and polarized light illuminating device.

By employing the above-described means, it is possible to recognize a character having a small contrast difference such as color unevenness and engraved characters.

Further, in the character recognition apparatus, the system and the control block are divided into a sequence management unit based on a split, a control unit including a CCD camera control unit, an OCR control unit, and an image processing unit, and a mechanical control unit. Then, a system configuration that can be modified in each part is adopted.

By taking the above measures, it is possible to easily cope with a system change or a control change.

Further, the character recognition apparatus integrally manages image data, robot data, and mechanical data by a database according to a hardware configuration and a system configuration.

By taking the above-mentioned means, the trouble recovery time can be shortened by facilitating remote maintenance and the like excluding the mechanical part.

In the unit assembling process, the component information including the lot number assigned to the component constituting the unit and the quality information of each component corresponding to the lot number is added to the unit lot number and the test result information. And a second process of adding a lot number and test result information when an assembly test is performed for each assembly process in the device assembling process to the information collected in the first process. A processing step, a third processing step of adding system development information including an application program created in the system development step to the information collected in the second processing step, and a system operation including a system failure in the system maintenance step And a fourth processing step of adding information to the information collected in the third processing step. Provides quality information of the assembly manufacturer, and system development information of the user, in cooperation with information including system operational information for the end user to control how the batch management system for quality control.

By adopting the above-mentioned means, the quality information from the components constituting the unit to the system operation information is managed in a unified manner, so that it is possible to speed up the provision of the quality information and to cope with failures in advance.

[0040]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention has the following embodiments.

The lot management system comprises: an information collecting means for collecting, by character recognition, lot number information given to each component constituting the unit at least in the unit assembling process; lot number information collected by the information collecting means; Quality information storage means for storing component information including quality information indicating the characteristic value of each component corresponding to the lot number provided by the component maker; and the quality information corresponding to the lot number information and the lot number. And a quality control means for performing quality control in cooperation with.

By adopting the above mode, the number of man-hours can be reduced by deleting the acceptance inspection work of the parts delivered from the parts maker. Also, by eliminating the inspection time, it is possible to shorten the lead time of the inspection process. In addition, it is possible to centrally manage the lot numbers and quality information of parts.

Further, in the lot management system, the information collecting means directly reads the lot number information written on the electronic component mounted on the printed board unit by a character recognition device, and the quality information storing means reads the lot number information. The unit information is added by adding the component information including the lot number of the electronic component mounted on the unit and the quality information indicating the characteristic value provided by the component maker to the lot number and the test result information of the printed circuit board unit, The quality control means performs quality control for each printed board unit up to the level of electronic components mounted on the printed board unit.

By adopting the above-described embodiment, the quality control up to the component level is performed by associating the quality information of the electronic components mounted on the printed board unit with each printed board unit, so that the printed board unit is configured. Enables unified management of quality information up to the electronic component level. Thereby, the quality information can be provided to the user. In addition, by using the Internet or the like for the data to be provided, it is possible to speed up the provision of the quality information.

Further, in the lot management system, the quality information storage means stores, for each printed board unit, a lot number of an electronic component mounted on the printed board unit, and the quality management means stores a lot number of the electronic component. Search means is provided for specifying a printed circuit board unit on which the electronic component is mounted based on the number.

By adopting the above-described embodiment, it is easy to troubleshoot a large amount of electronic components such as an LSI.
In addition, by associating with the device lot number, it is possible to specify even the last user.

Further, in the lot management system, the quality information storage means accumulates system operation information including details of system failures of each end user,
The quality management unit includes a search unit that searches for a related system from the system operation information and specifies a related target user.

By adopting the above-described embodiment, a remote maintenance environment is constructed with the final user, and a fault is dealt with by utilizing such information. That is, it is possible to deal with a failure in advance in dealing with the failure, and it is possible to prevent the system stop by the final user in advance.

Further, in the lot management system, the character recognizing device converts a character having a small contrast difference into a grayscale image when recognizing a character of a lot number described in an electronic component mounted on the printed board unit. Execute the capture pattern matching process.

By adopting the above-mentioned form, since the binarized file is not used, the character recognition rate is improved, and at the same time, it is possible to recognize the engraved character which is difficult to recognize.

Further, in the lot management system, when the character recognition device recognizes a character of a lot number written on an electronic component mounted on a printed circuit board unit, the character recognition device illuminates the color unevenness and the engraved character with falling light and polarized light. Performs character recognition by controlling using a device.

By adopting the above-described embodiment, it is possible to recognize a character having a small contrast difference such as a color unevenness and an engraved character.

Further, in the lot management system, the character recognition device performs individual management of image data by performing database management for each character recognition using a unit drawing number including a version number as a key.

In the above-described embodiment, the character recognition rate is improved by providing a font for each component.

Further, in the lot management system, the character recognition device includes a master image database for centrally managing common parts and fonts as an execution database for individually managing image data.

By adopting the above-described embodiment, a master image database for centrally managing common parts and fonts is held, and by associating them, the amount of image data is reduced. Therefore, it is possible to reduce the character recognition time and the amount of image data. Thereby, resources can be effectively used.

The lot management system further includes a subsystem having a function of registering a character which can be linked with the character recognition device, and creates character recognition character data by an external setup operation using the subsystem. I do.

By adopting the above-described embodiment, the productivity can be improved by shortening the stop time of the character recognition device.

Further, in the lot management system, the character recognition device performs image processing including noise removal, median, and sharpness on the captured image data, and executes registration processing after performing character recognition confirmation. .

By adopting the above-described embodiment, this operation executes the sequence management by the split, and executes the image processing by this in the automatic operation. For this reason, highly accurate character registration is made possible, and the recognition rate is improved. In addition, it is difficult to improve the character recognition rate of the stamped characters due to a lot difference or part variation.

Further, in the lot management system, the character recognizing device accumulates NG image data that could not be character-recognized when executing the registration processing, and uses the NG image data and the master image data. Generate an intermediate font.

By adopting the above-described embodiment, it is possible to always correct the master image data with respect to a lot change or a part variation, thereby improving the character recognition rate.

Further, in the character recognition device, the system and the control block are divided into a sequence management unit based on a split, a control unit including a CCD camera control unit, an OCR control unit, and an image processing unit, and a mechanical control unit. Then, a system configuration that can be modified in each part is adopted.

By adopting the above embodiment, it is possible to easily cope with a system change or a control change.

Further, the character recognition device integrally manages image data, robot data, and mechanical data by a database according to a hardware configuration and a system configuration.

By adopting the above embodiment, trouble recovery time is shortened by facilitating remote maintenance and the like excluding the mechanical part.

In the control method of the lot management system, the lot number given to each part constituting the unit in the unit assembling process and the inspection result of each part corresponding to the lot number provided by the part maker are provided. A first processing step in which part information including quality information including characteristic value information is added to the lot number of the unit and test result information to collect quality information; and an assembly test for each assembly step in an apparatus assembling step. And a second processing step of adding the lot number and the test result information obtained when performing the above to the quality information collected in the first processing step, and the system development information including the application program created in the system development step. A third processing step to be added to the quality information collected in the second processing step, and details of a system failure in the system maintenance step And a fourth processing step of adding the system operation information including the system operation information to the quality information collected in the third processing step. The quality information of each part maker, the quality information of the assembly maker, and the system development information of the user are provided. ,
The quality management is performed in cooperation with the quality information including the system operation information of the last user.

By adopting the above-described embodiment, the quality information from the components constituting the unit to the system operation information is centrally managed, thereby making it possible to speed up the provision of the quality information and to cope with the failure in advance.

Further, in the first process, when the lot numbers of the reel parts or the tray storage parts mounted on the printed board unit which are continuously stored are collected by the character recognition processing, the storing order is the lot number. Utilizing the fact that they are arranged and stored in order, character recognition processing is executed from the preceding / next component information for component variations in the same lot component.

By adopting the above embodiment, when recognizing the marking characters of the electronic components mounted on the printed circuit board unit, it is unnecessary to correct the master image data for the component variation of the same lot component, and the character recognition rate is reduced. Improve.

The computer-readable recording medium stores the lot number given to each part constituting the unit in the unit assembling process and the inspection result of each part provided by the part maker corresponding to the lot number. A first function of adding the component information including the quality information including the characteristic value information to the lot number of the unit and the test result information to collect the quality information, and performing an assembly test for each assembly process in the device assembling process. A second function of adding the lot number and the test result information at the time of execution to the quality information collected by the first function; and a system development information including an application program created in a system development step. Third added to the quality information collected by the function
Function, a fourth function of adding system operation information including the contents of a system failure in the system maintenance process to the quality information collected by the third function, quality information of an individual component maker, and quality information of an assembly maker. And a program for executing a function of performing quality management by linking quality information including system development information of the user and system operation information of the last user.

By adopting the above-mentioned form, the quality information from the components constituting the unit to the system operation information is managed in a unified manner, so that the function to speed up the provision of the quality information and to cope with the trouble beforehand is provided. To equip.

[0073]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A typical embodiment according to the present invention will be described with reference to FIGS. In the following, the same portions are denoted by the same reference numerals, and detailed description may be omitted.

FIG. 1 is a block diagram showing an embodiment of the present invention.

In the figure, the lot management system 1
A system is constructed so that the information collection device 2, the quality information storage device 4, and the quality management device 3 share information via the intranet 5. Also, a part maker 7 and a user (device sales maker) 8 via the Internet 6
, And the information including the order is shared with the final user 9. Also. In a factory equipped with the lot management system 1, a unit assembly line 22 and a device assembly line 2
3 are constituted.

The information collection device 2 is a unit assembly line 2
In 2, the lot number information described on the electronic component mounted on the printed board unit is directly read by the character recognition device 21. Further, the information collecting device 2 collects component information including quality information indicating the characteristic value of each component corresponding to the lot number provided as electronic data from the component maker 7 via the Internet 6.

Further, the information collecting device 2 collects unit information including the lot number of the printed board unit and the test result information on the unit assembly line 22.

Further, the information collecting device 2 collects the device information including the lot number and the test result information when the assembly test is performed for each assembling process in the device assembling line 23.

Further, the information collection device 2 collects system development information including an application program created in a system development process provided as electronic data from a user (device sales maker) 8 via the Internet 6.

Further, the information collecting apparatus 2 collects system operation information including the contents of system failure provided as electronic data from the last user 9 via the Internet 6 in the system maintenance process.

The quality information storage device 4 associates the component information with the unit information and stores it as unit information.
Further, the unit information is linked to the device information and stored as device information.

The quality information storage device 4 stores the device information as system development information in association with the system development information. Further, the system development information is linked with the system operation information and stored as system operation information.

That is, as shown in FIG. 2, the component maker uses the component drawing number, the lot number including the version number, and the characteristic values indicating the component inspection results such as the frequency and voltage values as the quality information as the component information. provide.

Also, in the assembly maker, in the unit assembling process, the unit information includes the unit drawing number, the unit lot number including the version number, and the test result. As shown in (a), unit information is configured and provided as quality information.

Further, in the device assembling process, the unit information is added, including the device drawing number, the device lot number including the version number, and the test result as device-specific information. As shown in FIG. 3B, the apparatus information is configured to include the test result information of the unit and provided as quality information.

Further, in the user (device sales maker),
In the system development process, information on the part number of the application program is provided as system development specific information, and the system information is added to form the system development information as shown in FIG.

Further, in the system maintenance process, the final user is provided with information on the contents of the system failure as system operation specific information, and adds the system development information to the system operation information as shown in FIG. Is configured.

The quality control device 3 has a function of controlling the quality of each printed board unit up to the level of the electronic components mounted on the printed board unit.

The input unit 33 instructs execution of a process related to quality management, such as handling of a failure occurrence and creation of quality management data, and executes the process instructed by the arithmetic control unit 31 and outputs the processing result to the output unit 34. .

The quality control device 3 includes a search unit 32
The search unit 32 has a function of specifying a printed circuit board unit on which the electronic component is mounted based on the lot number of the electronic component. In addition, as shown in FIG. 5, the last user is specified by associating with the device lot number. Further, a related system is searched from the system operation information to specify a related target user.

In short, the quality management device 3 includes the quality information of each component maker, the quality information of the assembly maker, the system development information of the user, and the system operation information of the last user stored in the quality information storage device 4. And quality management including quality information. The arithmetic control unit 31 is controlled by the control program 35.

With the configuration shown in FIG. 1, the lot management system reduces the number of man-hours by deleting the acceptance inspection work of the parts delivered from the parts maker. In addition, it is possible to centrally manage the lot numbers and quality information of parts.

In addition, since the quality control up to the component level is performed by linking the quality information of the electronic components mounted on the printed board unit for each printed board unit, the quality up to the electronic component level constituting the printed board unit is controlled. Enables centralized management of information. Thereby, the quality information can be provided to the user. In addition, by using the Internet or the like for the data to be provided, it is possible to speed up the provision of the quality information.

Further, it is easy to troubleshoot an electronic component used in large quantities such as an LSI. In addition, by associating with the device lot number, it is possible to specify even the last user.

Further, a remote maintenance environment is constructed with the final user, and prior information is dealt with by utilizing the information. That is, it is possible to deal with a failure in advance in dealing with the failure, and it is possible to prevent the system stop by the final user in advance.

Next, control of the lot management system will be described.

FIG. 6 is a flowchart showing the overall outline of the lot management system. Note that the reference numerals refer to FIG.

In step S01, the unit assembly line 22 mounts electronic components on a printed wiring board and assigns a lot number of the unit to form a printed board unit.

In step S02, the unit assembly line 22 reads the lot number of a predetermined electronic component mounted on the printed board unit by the character recognition device 21.

In step S03, the unit assembly line 22 tests the printed board unit, and the information collecting device 2 obtains test result information.

In step S04, the quality information storage device 4 includes a lot number assigned to each component and quality information provided by the component maker indicating the characteristic value of each component corresponding to the lot number. The part information is added to the unit lot number and the test result information and stored as unit information.

In step S05, the apparatus assembling line 23 assembles the apparatus including the printed board unit and assigns the lot number of the apparatus to configure the apparatus.

In step S06, the device assembly line 23 tests the device, and the information collecting device 2 obtains test result information.

In step S07, the lot number and the test result information when the assembly test was performed are added to the quality information storage device 4 and stored as device information together with the unit information collected in step S04.

In step S08, the user (device sales maker) 8 creates an application program.

At step S09, the system development information including the created application program is added to the quality information storage device 4 and stored as the system development information with the device information collected at step S07 added thereto.

In step S10, the system operation information including the contents of the system failure provided by the final user 9 is added to the system development information collected in step S09 and stored in the quality information storage device 4 as system operation information.

Next, an example of the processing executed by the search unit will be described with reference to FIG. Note that the reference numerals refer to FIG.

At step S 21, a failure is received from the last user 9 and stored in the quality information storage device 4.

At step S22, the quality control device 3
Confirms the contents of the failure and the system that caused the failure.

At step S23, the quality control device 3
Determines the location of the failure. For example, the part drawing number and the part lot number in which the failure has occurred, or the part number of the software in which the failure has occurred are determined.

In step S24, the search unit 32
The target device drawing number is searched from the fault location.

In step S25, the search unit 32
The apparatus lot number corresponding to the target apparatus drawing number is searched from the fault location.

At step S26, the search unit 32
A target system is searched from the searched device lot number.

In step S27, a target user is searched from the searched system.

In step S28, the searched target user list is output. (See Fig. 5)

Next, character recognition for directly reading a lot number written on an electronic component mounted on a printed board unit in a unit assembly line will be described.

FIG. 8 is a block diagram showing an embodiment of the present invention.

The character recognition system includes a character recognition device 40
, Printed board information storage unit 41, quality information storage device 4
2 and the subsystem 46 are configured to share information via an intranet.

The printed board information storage section 41 stores the information shown in FIG.
As shown in, the printed board information database is configured,
S consisting of the unit drawing number of the printed board unit and the part drawing number of the electronic component mounted on the printed board unit
K information and component position information on which the electronic component is mounted.

The quality information storage device 42 is the same as the quality information storage device 4 shown in FIG.

The subsystem 46 includes a target determining unit 7
1 and an image data record accumulating unit 72 and a character recognition unit 73, which have a function of cooperating with the character recognition device 40 to execute character registration, and generate character recognition character data by external setup work. .

As shown in FIG. 10A, the target determining section 71 determines an electronic component to be read for reading a lot number described in an electronic component mounted on the printed board unit. , The unit drawing number and the part drawing number to be read.

The image data record storage section 72 stores the results of the image data actually read by the character recognition device 40.
In addition, the character recognition unit 73 confirms character recognition character data when the subsystem 46 creates character recognition character data by an external setup operation.

The character recognition device 40 includes an input printed board confirmation section 52, a transport section 53, an NC data section 54, an optical reading section 55, a recognition section 56, and a character data conversion section 57.
, A printed board data management unit 59, a recognition data management unit 60, an arithmetic control unit 61, and a transmission / reception unit 51.

When a printed circuit board unit on which electronic components to be read are loaded on the printed circuit board assembly line 43, the input printed circuit board confirming section 52, as shown in FIG. The number is read, and the data for each input printed board is confirmed.

The transport section 53 loads and discharges the printed board unit, and moves the printed board unit to a predetermined reading position.

The NC data section 54 stores mechanical operation data of the transport section 53 and the optical reading section 55 for each printed board unit.

The optical reading section 55 has a light source and a sensor. The light source irradiates the reading section with the light source, the sensor detects reflected light from the reading section, and outputs reflection data.

The recognizing unit 56 compares and compares the read image data based on the reflection pattern based on the reflection data with the registered image data to check whether the registered character matches or not, and extracts character data.

The character data conversion unit 57 converts the extracted character data into a text data format.

The printed board data management section 59 manages data for each printed board unit, and comprises a target information storage section 62 and a character data storage section 63.

The target information storage section 62 stores electronic component data to be read for reading a lot number written on an electronic component mounted on a printed board unit created by an external setup operation in the subsystem 46. In addition, the electronic component data to be read determined by the character recognition device 40 can be stored.

The character data storage unit 63 stores the character data converted into the text data format by the character data conversion unit 57.

The recognition data management unit 60 manages image data to be recognized for each printed board unit, and includes a master image database 65 and an NG image database 66.
And an intermediate font database 67.

[0136] The master image database 65 corresponds to FIG.
As shown in (a), registered character data and registered image data are registered for each part drawing number in order to recognize characters described in electronic components.

The NG image database 66 accumulates NG image data that could not be recognized when executing the registration processing.

[0138] The intermediate font database 67 is shown in FIG.
As shown in FIG. 12B and FIG. 12, an average value of image data is calculated from registered characters, registered image data, and NG image data for each part drawing number, and an intermediate font of the character is registered for each part. I do. FIG. 12C shows an example of the registered intermediate font.

[0139] The arithmetic control unit 61 controls the character recognizing device 40.
For example, when character recognition is performed on a lot number written on an electronic component mounted on a printed board unit, a grayscale image of a character having a small contrast difference is taken in and a pattern matching process is executed.

As shown in FIG. 13, when the lot number written on the electronic component mounted on the printed board unit is recognized by characters, the irradiation device 55a is provided with a polarizing filter 55b.
, And character recognition is performed by controlling color unevenness and engraved characters using illumination equipment for falling light and polarized light.

Further, individual management of image data is executed by performing database management for each character recognition using a unit drawing number including a version number as a key.

Further, image processing including noise removal, median, and sharpness is performed on the captured image data, and after performing character recognition confirmation, registration processing is performed.

When the registration process is executed, NG image data for which character recognition has not been performed is accumulated, and an intermediate font is generated using the NG image data and the master image data. In this case, it is not necessary to correct the master image data for component variations in the same lot component.

When the lot number written on the electronic component mounted on the printed board unit is recognized by a character, a character recognition process using a component sequence is executed. Details of the process will be described later. The arithmetic control unit 61 is controlled by a control program 58.

The transmission / reception unit 51 transmits / receives data to / from the printed board information storage unit 41, the subsystem 46, and the quality information storage device 42 via the intranet 45.

Next, a description will be given of a character recognition process using a component arrangement.

FIGS. 14 and 15 show an example of character recognition using a part sequence.

As shown in FIG. 14, electronic components mounted on a printed board unit often use components stored in a tray in order and components stored in a reel in order. The storage order of the parts is stored in the order of the lot number.

When mounting the components on a printed board, the tray and the reel are stored in a component stocker, and reel components or tray components are mounted on the printed board set on the table by a mounting head. For example, tray components are mounted in the order of A1, A2, A3, and reel components are mounted in the order of B1, B2, B3.

When collecting the lot numbers of the reel parts or the tray storage parts mounted on the printed board unit by the character recognition processing, for example, if the tray part A3 could not be read, FIG.
As shown in (a), based on the reading result of the tray parts A1 and A2, the mismatch data of the tray part A3 is obtained.
For example, correct data is estimated by calculating the number of increase in numerical values.

If, for example, the reel component B2 cannot be read, as shown in FIG. 15B, the result of reading the reel components B1 and B3 indicates that a numerical value, Estimate the correct data by calculating the increase.

Further, as shown in FIG. 15C, when the component C1 cannot be read, the components C2 and C3 are not read.
From the result of the reading,
For example, correct data is estimated by calculating the number of increase in numerical values.

As described above, in the case of the character recognition using the parts arrangement, it is not necessary to correct the master image data for the parts variation in the same lot parts.

Next, the configuration of the control system of the character recognition device will be described.

As shown in FIG. 16, the character recognition device is composed of a host personal computer 7 that exchanges data with an upper personal computer 71.
The NC card 73 includes a numerical controller for performing a mechanical operation, a capture card 74 for controlling an optical reading unit, and an I / O card 75 for controlling peripheral devices. Therefore, when the system or the control is changed, the host personal computer 72 is changed.

As shown in FIG. 17, the system and control blocks of the character recognition device are divided into a sequence management unit 72a by a split and a CCD camera control unit 72d.
, An OCR control unit 72e and an image processing unit 72f, and a mechanical control unit 72c. Therefore, it is easy to cope with a system change or a control change.
FIG. 3 shows a control flow in the automatic operation mode of the character recognition device.

As shown in FIG. 18, the character recognition device manages image data, robot data, and mechanical data in a unified manner by a database 80 according to a hardware configuration and a system configuration. Therefore, the trouble recovery time is shortened by facilitating remote maintenance and the like excluding the mechanism part.

Next, the character recognition processing of the character recognition system will be described.

FIG. 19 shows a schematic flowchart of the character recognition process. Note that the reference numerals refer to FIG.

In step S31, the subsystem 4
In 6, the reading target is determined by the target determining unit 46 and transferred to the character recognition device 40.

In step S32, the character recognition device 4
0 stores the read target information transferred to the target information storage unit 62 of the printed board data management unit 59.

In step S33, when the printed board unit on which the electronic component to be read is mounted is loaded, the loaded printed board confirmation unit 52 checks the data of each loaded printed board.

In step S34, the transport section 53
The inserted printed board unit is moved to a predetermined reading position.

At step S35, the optical reading unit 5
Reference numeral 5 reads a character written on the electronic component at the reading position.

In step S36, the recognition section 56
The read image data is compared with the registered character image data. Further, in step S37, it is determined whether or not it matches the registered character. If they match, the process proceeds to step S38. If they do not match, the process proceeds to step S44.

In step S38, the recognition section 56
Characters are identified by character recognition data.

In step S39, the character data conversion unit 57 converts the extracted character recognition data into a text data format.

In step S40, character data storage section 63 stores the character data converted into the text data format.

In step S41, it is determined whether there is a read target. If there is a target, step S3
Return to 4. If there is no target, the process proceeds to step S42.

In step S42, the character data stored in the character data storage section 63 is transferred to the subsystem 46.

In step S43, the character data is stored as quality information in the quality information storage device 42, and the process ends.

In step S44, image data that does not match is stored in the NG image database 66.

In step S45, an image data average value is calculated from the registered characters, the registered image data, and the NG image data, and an intermediate font of the character for each component is registered as the registered character image data. Then, the process returns to step S36.

Next, referring to FIG.
1 of the character recognition processing procedure for the same lot parts controlled by
An example will be described. Note that the reference numerals refer to FIG.

At step S51, the optical reading unit 5
Reference numeral 5 reads a character written on the electronic component at the reading position.

In step S52, the recognition section 56
The read image data is compared with the registered character image data. In step S53, it is determined whether or not the registered character matches. If they match, the process proceeds to step S60. If not, the process proceeds to step S54.

In step S54, the arithmetic control unit 61
Confirms the current reading order.

In step S55, the arithmetic control unit 61
Determines whether this reading is the first data. If it is the first data, the process proceeds to step S56. If it is not the first data, the process proceeds to step S58.

In step S56, the optical reading unit 5
Reference numeral 5 reads a character written on a later electronic component.

In step S57, the arithmetic control unit 61
Estimates the correct data for the mismatched data from the later read result of the electronic component.

In step S58, the arithmetic control unit 61
Captures image data obtained by reading characters written on a preceding electronic component or image data obtained by reading characters written on a subsequent electronic component.

In step S59, operation control unit 61
Estimates the correct data for the mismatched data from the reading result of the preceding electronic component or the reading result of the preceding and following electronic components.

In step S60, the recognition section 56
The character recognition process is performed on the mismatched data based on the estimated correct data, and the process ends.

[0184]

According to the present invention, the following effects can be expected.

In the lot management system, the number of man-hours can be reduced by deleting the acceptance inspection work of the parts delivered from the parts maker. Further, by eliminating the inspection time, the lead time of the inspection process can be shortened. In addition, it is possible to centrally manage the lot numbers and quality information of the parts.

Further, quality control up to the component level is performed by linking the quality information of the electronic components mounted on the printed board unit for each printed board unit, so that the quality control is performed.
It is possible to centrally manage quality information up to the level of electronic components constituting the printed board unit. Thereby, the quality information can be provided to the user. Also,
By using the data to be provided on the Internet or the like, it is possible to speed up the provision of quality information.

Further, it is possible to easily trace a failure in a large number of electronic components such as an LSI. Further, by associating with the device lot number, it is possible to specify up to the last user.

Further, by establishing a remote maintenance environment with the final user and utilizing this information, it is possible to cope with a failure in advance. In other words, it is possible to deal with the failure in advance in dealing with the failure, and it is possible to prevent the system stop by the final user in advance.

In addition, since the binarization file is not used for character recognition of the lot number written on the electronic component mounted on the printed circuit board unit, the character recognition rate is improved, and at the same time, the engraved character which makes character recognition difficult is used. Can be recognized.

Further, it is possible to recognize a character having a small contrast difference such as color unevenness and engraved characters.

Further, by having a font for each component, the character recognition rate can be improved.

Further, a master image database for centrally managing common parts and fonts is provided, and by associating them, the amount of image data can be reduced.
Therefore, it is possible to reduce the character recognition time and the amount of image data. Thereby, resources can be effectively used.

Further, in the lot management system, the character recognition character data is created by the external setup operation using the subsystem, so that the stop time of the character recognition device can be shortened and the productivity can be improved.

Further, when performing character recognition of the lot number described in the electronic component mounted on the printed board unit, this operation executes sequence management by splitting, and in automatic operation, thereby executes image processing. For this reason, it is possible to register characters with high precision, and to improve the character recognition rate.

Further, it is possible to always correct the master image data with respect to a lot change or a part variation, thereby improving the character recognition rate.

Further, the character recognition device has a system configuration that can be modified in each part, so that it is possible to easily cope with a system change or a control change.

Further, by facilitating remote maintenance and the like excluding the mechanism, trouble recovery time can be reduced.

In the control method of the lot management system, the quality information from the components constituting the unit to the system operation information is managed in a unified manner, so that the speed of providing the quality information and the proactive handling of the failure can be realized. be able to.

Furthermore, when recognizing the seal characters of the electronic components mounted on the printed board unit, it is possible to improve the character recognition rate by eliminating the need to correct the master image data for component variations in the same lot components. .

[0200] The computer-readable recording medium is provided with a function for centrally managing the quality information from the components constituting the unit to the system operation information. Can be made possible.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention.

FIG. 2 is a diagram of an embodiment of the present invention.

FIG. 3 is a diagram of an embodiment of the present invention.

FIG. 4 is a diagram of an embodiment of the present invention.

FIG. 5 is a diagram of an embodiment of the present invention.

FIG. 6 is a flowchart of an embodiment of the present invention.

FIG. 7 is a flowchart of an embodiment of the present invention.

FIG. 8 is a configuration diagram of an embodiment of the present invention.

FIG. 9 is a diagram of an embodiment of the present invention.

FIG. 10 is a diagram of an embodiment of the present invention.

FIG. 11 is a diagram of an embodiment of the present invention.

FIG. 12 is a diagram of an embodiment of the present invention.

FIG. 13 is an explanatory diagram of an embodiment of the present invention.

FIG. 14 is a diagram of an embodiment of the present invention.

FIG. 15 is an explanatory diagram of an embodiment of the present invention.

FIG. 16 is a diagram of an embodiment of the present invention.

FIG. 17 is a diagram of an embodiment of the present invention.

FIG. 18 is a diagram of an embodiment of the present invention.

FIG. 19 is a flowchart of the embodiment of the present invention.

FIG. 20 is a flowchart of the embodiment of the present invention.

FIG. 21 is a configuration diagram of a conventional technique.

FIG. 22 is a diagram of the prior art.

FIG. 23 is a diagram of the prior art.

FIG. 24 is a flowchart of a conventional technique.

[Explanation of symbols]

 1: Lot management system 2: Information collection device 3: Quality management device 4: Quality information storage device 5: Intranet 6: Internet 7: Parts manufacturer 8: User 9: Last user 21: Character recognition device 31: Operation control unit 32: Search unit 40: character recognition device 42: quality information storage device 46: subsystem 59: printed board data management unit 60: recognition data management unit

Claims (16)

[Claims] 1. An information collecting means for collecting, by character recognition, lot number information given to each part constituting a unit at least in a unit assembling step; lot number information collected by the information collecting means; Quality information storage means for storing component information including provided quality information indicating the characteristic value of each component corresponding to the lot number, and linking the lot number information with the quality information corresponding to the lot number And a quality control means for performing quality control. 2. In the lot management system, the information collecting means directly reads lot number information written on an electronic component mounted on a printed board unit by a character recognition device, and the quality information storage means includes The unit information is added by adding the component information including the lot number of the electronic component mounted on the unit and the quality information indicating the characteristic value provided by the component maker to the lot number and the test result information of the printed circuit board unit, 2. The lot management system according to claim 1, wherein the quality management unit performs quality management for each printed board unit up to a level of an electronic component mounted on the printed board unit. 3. 3. The lot management system, wherein the quality information storage means accumulates, for each printed circuit board unit, a lot number of an electronic component mounted on the printed circuit board unit; 3. The lot management system according to claim 2, further comprising a search unit that specifies a printed board unit on which the electronic component is mounted based on a number. 4. In the lot management system, the quality information storage means accumulates system operation information including the contents of a system failure for each last user, and the quality management means stores a related system from the system operation information. 3. The lot management system according to claim 1, further comprising a search unit configured to search and specify an associated target user. 4. 5. In the lot management system, the character recognition device converts a character having a small contrast difference into a grayscale image when recognizing a lot number described in an electronic component mounted on a printed board unit. 3. The lot management system according to claim 2, wherein a loading pattern matching process is executed. 6. The lot management system, wherein the character recognition device illuminates color unevenness or engraved characters with oblique light and polarized light when character recognition is performed on a lot number written on an electronic component mounted on a printed board unit. The lot management system according to claim 2, wherein the character recognition is performed by controlling using a device. 7. In the lot management system, the character recognition device performs individual management of image data by performing database management for each character recognition using a unit drawing number including a version number as a key. The lot management system according to claim 1 or 2, wherein: 8. The lot management system according to claim 7, wherein the character recognition device includes, as an execution database for individually managing image data, a master image database for centrally managing common parts and fonts. Lot management system described. 9. The lot management system according to claim 1, further comprising a subsystem having a function of performing a character registration function capable of cooperating with the character recognition device, and using the subsystem to create recognized character data by an external setup operation. The lot management system according to claim 2, wherein 10. In the lot management system, the character recognition device executes image processing including noise removal, median, and sharpness on captured image data, and executes registration processing after performing character recognition confirmation. 3. The lot management system according to claim 2, wherein: 11. The lot management system, wherein the character recognizing device stores NG image data for which character recognition was not possible when executing the registration processing, and uses the NG image data and master image data to perform intermediate processing. The lot management system according to claim 2, wherein a font is generated. 12. In the character recognition device, the system and the control block are divided into a sequence management unit based on a split, a control unit including a CCD camera control unit, an OCR control unit, and an image processing unit, and a mechanical control unit. And
3. The lot management system according to claim 2, wherein the system configuration can be modified in each part. 13. The character recognition device according to claim 2, wherein each of the image data, the robot data, and the mechanical data is centrally managed by a database according to a hardware configuration and a system configuration. 12. The lot management system according to item 12. 14. A lot number assigned to each part constituting a unit in a unit assembling step, and characteristic value information provided by a part maker and indicating inspection result results of each part corresponding to the lot number. A first process of collecting quality information by adding component information including quality information to a unit lot number and test result information, and a lot when an assembly test is performed for each assembly process in a device assembling process. A second processing step of adding a number and test result information to the quality information collected in the first processing step; and a system development information including an application program created in the system development step in the second processing step. A third processing step for adding to the collected quality information; and system operation information including a system failure content in the system maintenance step. A fourth processing step for adding to the quality information collected in the processing step 3; the quality information of each part maker, the quality information of the assembly maker, the system deployment information of the user, and the system operation information of the last user A lot management system control method, wherein quality control is performed in cooperation with quality information including: 15. In the first processing step, when the lot numbers for the reel parts or the tray storage parts mounted on the printed board unit which are continuously stored are collected by the character recognition processing, the storing order is the lot number. 15. The lot management system according to claim 14, wherein a character recognition process is executed based on preceding / next part information for part variation in the same lot part by utilizing the fact that the parts are stored in order. Control method. 16. A lot number assigned to each part constituting a unit in a unit assembling step, and characteristic value information provided by a part maker and indicating inspection result results of each part corresponding to the lot number. A first function of adding quality information and component information to a unit lot number and test result information to collect quality information; and a lot number when an assembly test is performed for each assembly process in an apparatus assembly process. And a second function of adding the test result information to the quality information collected by the first function; and quality information collected by the second function of system development information including an application program created in a system development step. And the third function to collect system operation information including the contents of the system failure in the system maintenance process. The fourth function to be added to the quality information, the quality information including the quality information of each part manufacturer, the quality information of the assembly maker, the system deployment information of the user, and the system operation information of the final user are linked together. A computer-readable recording medium for recording a program for executing a function for performing management.