CN100407878C - A method and device for checking consistency - Google Patents

Abstract

A method for checking consistency, which includes the following steps: read the bill of materials of the printed circuit board to be checked, and generate a first data table, the first data table includes each material serial number and position number; read the circuit principle The Part list table of the figure, the ICT file of the PCB, and generate a second data table, the second data table includes each material serial number and position number; the first list and the second list are established by the material serial number Associating, using the first and second data tables to compare the bill of materials of the circuit board, the Part list table of the schematic diagram and the ICT file of the PCB, and obtain the comparison result. The method can quickly and effectively check out the inconsistency between the printed circuit board bill of materials and the circuit schematic diagram and PCB. The invention also provides the corresponding device.

Description

A method and device for checking consistency

technical field

The invention relates to printed circuit board design and manufacturing technology, in particular to a method and device for checking the consistency among PCB material list, circuit schematic diagram and PCB (Print Circuit Board: printed circuit board).

Background technique

In the prior art, the main process of printed circuit board design is as shown in Figure 1, namely: first carry out circuit schematic diagram design; secondly design PCB and make printed circuit board bill of materials according to this circuit schematic diagram; then print circuit board The consistency (or difference) verification of the bill of materials, PCB, and circuit schematic diagram is carried out to ensure the consistency of the three; finally, the board is put into production.

It can be seen that correctly and efficiently checking the consistency (or difference) between the printed circuit board bill of materials and the PCB and the circuit schematic diagram is an indispensable link to determine whether the printed circuit board design is correct and whether to put it into production. The following is an introduction to common inspection methods in the prior art:

The manual comparison method, as shown in Figure 2, manually checks the Part List (material code list) table of the circuit schematic diagram, the connection position of each device on the ICT (In Circuit Test: online test) table of the PCB, and the device Whether the package is consistent with the corresponding position number and package in the printed circuit board bill of materials, the process is: the circuit schematic engineer prints out the part list table of the circuit schematic diagram and the circuit board bill of material table, and checks the connection positions of the two devices one by one 1. Check whether the packaging is consistent; the PCB design engineer prints out the ICT table of the PCB and the bill of materials of the circuit board, and then checks whether the connection positions of the two devices and the packaging are consistent.

Obviously, the above-mentioned prior art has the following disadvantages: due to the objective limitations of human operation, its accuracy cannot be guaranteed, and its efficiency is low.

technical content

The invention provides a method and device for checking consistency to overcome the shortcomings of low work efficiency and insufficient accuracy in the prior art.

In order to solve the above problems, the present invention provides the following technical solutions:

A method of checking consistency comprising the steps of:

Read the printed circuit board material list to be checked, and generate a first data table, the first data table includes each material serial number and position number;

Read the material code list of the circuit schematic diagram and the online test table of the PCB, and generate a second data table, the second data table includes each material serial number and position number;

The relationship between the first list and the second list is established through the serial number of the material, and the first and second data tables are used to compare the circuit board bill of materials, the Part list table of the schematic diagram, and the ICT file of the PCB to obtain a comparison result.

A device for checking consistency, comprising:

The download module is used to read the printed circuit board bill of materials to be checked, and generate the first data table;

The read-in module is used to read the Part list table of the circuit schematic diagram and the ICT file of the PCB, and generate the second data table;

Verification and comparison module, used to compare the printed circuit board bill of materials, the Partlist table of the circuit schematic diagram and the ICT file of the PCB;

The output module is used to output the comparison result.

The download module reads the printed circuit board bill of materials currently to be checked to generate the first data table, and the read-in module reads the Part list table of the circuit schematic diagram and the ICT file of the PCB, and generates the second data table , these data sheets are respectively sent to the verification and comparison module for comparison to obtain comparison results, and the comparison results are output by the output module.

The invention provides a method and device for checking consistency, which can quickly and effectively check out the inconsistency between the printed circuit board bill of materials and the circuit schematic diagram, PCB, and solve how to effectively ensure the circuit in the design of the printed circuit board bill of materials. Schematic diagram, PCB and printed circuit board BOM consistency problem, specifically, the present invention mainly has the following advantages:

1) The comparison result is accurate, and it can truly locate the consistency problem between the printed circuit board bill of materials, the circuit schematic diagram, and the PCB. The problem is classified and displayed, the content is clear, simple, and the interface is friendly, which can provide accurate information for design and development personnel positioning problem;

2) Provide the audit of the bill of materials of each version of the printed circuit board and the audit of each engineering change, which is convenient for the designer to audit and verify various versions and changes;

3) The cumbersome and error-prone human work is replaced by the computer, and the speed is relatively fast (within 1 minute), which greatly improves the work efficiency.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Figure 1 is a schematic diagram of the main process of printed circuit board design;

Fig. 2 is the method flowchart of manual comparison method in the prior art;

Fig. 3 is a schematic structural diagram of the device described in this embodiment;

Fig. 4 is the flow chart of the method described in this embodiment;

Fig. 5 is a schematic structural diagram of a data table stored in a printed circuit board bill of materials;

Fig. 6 is a schematic diagram of the structure of the data table stored in the ICT file of the PCB;

Fig. 7 is the flow chart of the method for reading the Part list table of circuit schematic diagram;

Fig. 8 is the flow chart of the method for reading the ICT file of PCB;

Fig. 9 is a specific method flowchart of the step c;

Fig. 10 is a flow chart of the method of the output module;

Detailed ways

After the printed circuit board schematic diagram and PCB design are completed, the printed circuit board bill of materials is defined in the ERP (Enterprise Resources Planning: Enterprise Resource Planning) system. Now that the filing process is going to go, it is necessary to verify the consistency of the three data. The present invention The embodiment is used to complete the printed circuit board bill of materials, circuit schematic diagram, and PCB difference check.

As shown in Figure 3, it is a schematic structural diagram of a device for checking consistency in an embodiment of the present invention, the device includes:

The printed circuit board BOM download module is used to read the printed circuit board BOM to be checked and generate a corresponding first data sheet;

The circuit schematic material code list (Part list) table and the ICT file reading module of the PCB are used to read the Part list table of the circuit schematic diagram and the ICT file of the PCB, and generate a corresponding second data sheet;

Verification and comparison module, used to compare the printed circuit board bill of materials, the Partlist table of the circuit schematic diagram and the ICT file of the PCB;

an output module, configured to output a comparison result;

The above four modules can be implemented through programs, developed with Delphi, and run completely on the Windows interface. The dynamic link library (DLL) is directly solidified into the program without installation.

As shown in Figure 4, a method for checking consistency described in the embodiment of the present invention, its specific implementation method is as follows:

First, read the bill of materials of the printed circuit board to be checked, and generate a corresponding first data sheet;

The printed circuit board BOM download module reads a certain version of the printed circuit board BOM according to the time period of the project change through the server client connection mode, that is, it downloads the printed circuit board BOM from the ERP system, assuming that the file name of the current version is named 03023333, and generate the corresponding first data table, as shown in Figure 5, the first data table of the printed circuit board BOM is a position number and the corresponding Part stored in the same record.

At this time, the user decides to verify all, that is, to compare all the printed circuit board bill of materials, the Part list table of the circuit schematic diagram, and the ICT file of the PCB.

Second, read the Part list table of the circuit schematic diagram and the ICT file of the PCB, and generate the corresponding second data sheet;

According to the characteristics of the file type, the ICT file reading module of the circuit schematic diagram Part list/PCB uses different file suffixes. For example, the file suffix of the circuit schematic diagram Part list table is '.lst' or '.bom'; the ICT file of PCB The file suffix of the file is '.asc' or '.val' to determine the type and format of the current file to be read. The file of the Part list table of the current circuit schematic diagram is SS62TST.lst, and the file of the ICT file of the PCB is SS62TST.val. After reading in, store it in the corresponding second data table. The Part list table of the circuit schematic diagram and the printed circuit board material list are stored in two tables. Data table 1 stores the quantity of Part (material code), Encapsulation and Part are one-to-one data information. Data table 2 stores Part and position number information in a one-to-many relationship with Part (that is, one part corresponds to multiple position numbers). The two tables are based on item no (serial number) and Part is associated, as shown in Figure 5; for the ICT file table of the PCB, the data information is stored in a data table, which stores a position number and the package corresponding to the position number as a record, as shown in Figure 6, and then passes Each position number compares the package and Part, so as to compare the differences in various situations.

The specific process of reading in the Part list table of the circuit schematic diagram is shown in Figure 7: select the Part list file with the file suffix '. Read the Part, package, Quantity (used quantity), and position number into the intermediate data table, and then read the Item no, Part, package and Quantity information in the intermediate data table into data table 1, and read the Item no, Part and position number information Enter data table 2;

The specific process of reading in the ICT table of the PCB is shown in Figure 8: Select the ICT file with the file suffix of '. The number information is read into the data table;

Third, compare the printed circuit board bill of materials, the Partlist table of the circuit schematic diagram and the ICT file of the PCB through its data sheet to obtain the comparison result;

The verification and comparison module first searches and compares the device connection position in the printed circuit board bill of materials, and if the same connection position is the same, then compares whether the package is consistent; then searches and compares the device connection position in the PartList of the circuit schematic or the ICT file of the PCB Once; record the difference between comparisons, and display them when all comparisons are completed. The specific implementation method is shown in Figure 9;

c1. Find out the device connection position of the printed circuit board bill of materials in the Part list of the circuit schematic diagram and/or the ICT file of the PCB. If the device connection position exists, compare whether the package is consistent; if there is no such device connection position , then find out the non-existing device connection position in the Part list of the circuit schematic diagram and/or the ICT file of the PCB;

c2. Find out the part list of the circuit schematic diagram and/or the ICT file of the PCB in the device connection position that does not exist in the printed circuit board bill of materials;

c3. Record the comparison result.

The key of this step is to select the benchmark comparison object: that is, first select the device connection position in the printed circuit board bill of materials as the benchmark for comparison, and then select the device connection position in the Partlist table of the circuit schematic or the ICT file of the PCB as the benchmark for comparison. Comparison; and in the implementation method: first find out the printed circuit board bill of materials in the Part list of the circuit schematic diagram and/or in the ICT file of the PCB, the number of device connection positions that do not exist, and secondly determine the number of device connection positions that exist. Compare the corresponding packaging conditions; then find the part list of the circuit schematic diagram and/or the ICT file of the PCB for the device connection position that does not exist in the printed circuit board bill of materials; finally output the result of the difference comparison.

Fourth, output the comparison result.

As shown in Figure 10, the output module outputs and displays the results according to the following categories:

1. The connection position of the device is on the circuit schematic diagram and not on the printed circuit board bill of materials;

2. The link position of the device is on the printed circuit board bill of materials but not on the circuit schematic diagram;

3. The circuit schematic diagram is consistent with the device connection position in the printed circuit board bill of materials, and the corresponding package is inconsistent;

4. The connection position of the device is on the PCB and not on the printed circuit board bill of materials;

5. The connection position of the device is on the printed circuit board bill of materials and not on the PCB;

6. The PCB is consistent with the device connection position in the printed circuit board bill of materials, and the corresponding package is inconsistent.

The following is the output of this example:

Wherein, the board BOM is the printed circuit board bill of materials, and the schematic BOM is the circuit schematic Part list.

Finally, locate the problem according to the difference results of the comparison, and modify the BOM/PCB of the printed circuit board.

Utilizing the method and device of the present invention can quickly and effectively check out the inconsistency between the printed circuit board bill of materials and the PCB and the circuit schematic diagram, and solve how to effectively ensure the circuit schematic diagram, PCB and printed circuit diagram in the design of the printed circuit board bill of material. The consistency of the board bill of materials, its advantages specifically refer to:

1) The comparison result is accurate, and it can truly locate the consistency problem between the printed circuit board bill of materials, the circuit schematic diagram, and the PCB. The problem is classified and displayed, the content is clear, simple, and the interface is friendly, which can provide accurate information for design and development personnel. question;

2) Provide the audit of the bill of materials of each version of the printed circuit board and the audit of each engineering change, which is convenient for the designer to audit and verify various versions and changes;

3) The method can be completed by applying the computer to replace the cumbersome and error-prone manual work, which is relatively fast (within 1 minute), and greatly improves work efficiency.

Claims (3)

1. check conforming method for one kind, it is characterized in that the method includes the steps of:

Download module reads the printed circuit board (PCB) BOM of examine, and generates first tables of data, and described first tables of data comprises each material sequence number and location number;

Read in module and read the COM code inventory of circuit theory diagrams, the on-line testing table of PCB, and generate second tables of data, described second tables of data comprises each material sequence number and location number;

Set up related between described first tables of data and described second tables of data by the material sequence number, the checking comparison module utilizes the location number of each material in the ICT file of the COM code inventory of first and second tables of data comparison circuit plate BOM, schematic diagram and PCB, obtains comparative result;

Comparative result is exported.

2. the conforming method of a kind of inspection as claimed in claim 1, wherein, described step checking comparison module utilizes the location number of each material in the ICT file of the COM code inventory of first and second tables of data comparison circuit plate BOM, schematic diagram and PCB, obtains comparative result, specifically comprises:

Find out the device link position of printed circuit board (PCB) BOM in the ICT file of the COM code inventory of circuit theory diagrams and PCB, if there is this device link position, then relatively whether its encapsulation is consistent; If there is no this device link position then finds out non-existent device link position in the ICT file of the COM code inventory of circuit theory diagrams and PCB;

Find out the COM code inventory of circuit theory diagrams and/or ICT file non-existent device link position in the printed circuit board (PCB) BOM of PCB;

The record comparative result.

3. check conforming device for one kind, it is characterized in that this device includes:

Download module is used to read the printed circuit board (PCB) BOM of examine, and generates first tables of data, and described first tables of data comprises each material sequence number and location number;

Read in module, be used to read the COM code inventory of circuit theory diagrams, the ICT file of PCB, and generate second tables of data, described second tables of data comprises each material sequence number and location number;

The checking comparison module is used for the COM code inventory of comparison printed circuit board (PCB) BOM, circuit theory diagrams and the ICT file of PCB;

Output module is used to export comparative result;

The printed circuit board (PCB) BOM that described download module reads current examine generates first tables of data, and the described module of reading in reads the COM code inventory of circuit theory diagrams, the ICT file of PCB, and generate second tables of data, these tables of data are delivered to described checking comparison module respectively and are compared, obtain comparative result, by described output module output comparative result.

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