CN104091161A - Schematic circuit diagram netlist comparison method - Google Patents

Abstract

The invention relates to a schematic circuit diagram comparison method, in particular to a schematic circuit diagram netlist comparison method. According to the schematic circuit diagram netlist comparison method, by extracting network node names, the names of connected networks, component bit numbers, packaging information and other aspects in schematic diagram netlist, calculation is conducted, the consistency of connection of each network node, the consistency of connection of pins of each component, the consistency of the component bit numbers and the consistency of packaging in the netlists can be compared rapidly and directly, the difference between the components and the inconsistency of connection are represented, inconsistent results are classified into different classes and are output and displayed, and therefore the accuracy of a result is guaranteed. The schematic circuit diagram comparison method can be executed through software, use is convenient, and the quality and the efficiency of design of a schematic diagram of a circuit board are improved.

Description

A kind of circuit theory diagrams net table comparison method

Technical field

The present invention relates to a kind of circuit theory diagrams comparison method, particularly a kind of circuit theory diagrams net table comparison method.

Background technology

In board design, principle diagram design is an of paramount importance link, and in the solution development of product, the effect of schematic diagram is very important, and the quality that checking on of schematic diagram also concerned to whole project life even.In circuit board correcting process, the variation of schematic diagram before and after comparison correcting, in order to guarantee that the part except problem needs to revise before and after circuit board correcting, other parts must be consistent with raw sheet, to guarantee the quality of circuit board.

Secondly, because extending down, the schematic diagram of circuit board can relate to PCB Layout, PCB layout namely, certain this wiring is made based on schematic diagram, by the restriction to the analysis of schematic diagram and other conditions of circuit board, the connection and the function that realize between electronic devices and components realize, thereby the correctness of schematic diagram is a very important link in board design quality.

In the prior art, in board design process, design proposal or requirement are carried out part modification to schematic diagram, only revising certain tie point or tie point renames, the variation of these schematic diagrams is not easy to be labeled or to detect, schematic diagram for multipage, be unfavorable for especially checking its modification correctness, if check less than, some unchangeable place has changed by mistake, and again wrong schematic diagram is derived after net table, for PCB, designs, cause the circuit board of producing defective, cause the waste of human and material resources, resource, cost.Visible, in board design, the correctness of schematic diagram is the soul of circuit board.

At present, the process change of principle diagram design is all to pass through hand inspection with checking, for the schematic diagram of several pages than being easier to, and for multipage schematic diagram, common way is that two parts of schematic diagrams are printed, and tie point, interconnection network, device attribute are compared one by one, not only artificial length consuming time, efficiency is low, and has risk.

Summary of the invention

In order to solve the problem of prior art, the invention provides a kind of circuit theory diagrams net table comparison method, it can realize the comparison process of circuit theory diagrams by software, easy to use, improves Schematic design quality and efficiency.

The technical solution adopted in the present invention is as follows:

A kind of circuit theory diagrams net table comparison method, to calculate by nodal information or component information in extraction circuit theory diagrams net table, thereby the consistance of each nodal information or component information in net table relatively, thereby judge that each network node connects the consistance being connected with components and parts pin, or the consistance of judgement components and parts item, encapsulation, the final difference that embodies the inconsistent or components and parts that connect, and inconsistent result is divided into the different classes of accuracy of carrying out output display and can guarantee result.

Nodal information comprises network node title and interconnection network title.

Component information comprises components and parts item and packaging information.

Method specifically comprises the following steps:

A, two parts of schematic diagrams before and after circuit board correcting are derived respectively to net table;

Interconnection network title, nodename data in the net table of two parts of schematic diagrams that B, extraction are put in order;

The title of an interconnection network in the net table of C, extraction a copy of it schematic diagram;

D, in the net table of another part of schematic diagram, judge whether to find identical interconnection network title:

If not identical, executive logging information; If identical, then remove comparison node name data, if identical, reject, if different, recorded information; Continue to extract next interconnection network title, nodename data;

E, judge whether that all interconnection networks, nodename data all compare:

If not, extract next interconnection network title, nodename data are compared; If so, recorded information;

F, judge that whether record information list is empty:

If record information list is empty, two parts of schematic diagrams before and after the correcting of indication circuit plate are identical, not there are differences, and return to end; If different, show that two parts of schematic diagrams are variant, show recorded information, return to end.

The beneficial effect that technical scheme provided by the invention is brought is:

The present invention calculates by extracting the aspects such as network title, components and parts item, packaging information of network node title in schematic diagram net table and connection, can be fast directly relatively in net table each network node connect and the consistance of the connection of components and parts pin, the consistance of components and parts item, encapsulation, and embody the inconsistent of the difference of components and parts and connection, inconsistent result is divided into the different classes of accuracy of carrying out output display and can guarantee result.

Method of the present invention can realize by software, easy to use, improves Schematic design quality and efficiency.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the method flow diagram of a kind of circuit theory diagrams net table comparison method of the present invention.

Embodiment

For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.

Embodiment mono-

A kind of circuit theory diagrams net table comparison method of the present embodiment, that the aspects such as network title by extracting network node title in schematic diagram net table and connection, components and parts item, packaging information are calculated, can be fast directly relatively in net table each network node connect and the consistance of the connection of components and parts pin, the consistance of components and parts item, encapsulation, and embody the inconsistent of the difference of components and parts and connection, inconsistent result is divided into the different classes of accuracy of carrying out output display and can guarantee result.

As shown in Figure 1, a kind of circuit theory diagrams net table comparison method of the present embodiment comprises the following steps:

The net table of 1, two parts of schematic diagrams before and after circuit board correcting being derived respectively;

Interconnection network title, nodename data in the net table of two parts of schematic diagrams that 2, extraction is put in order;

3, the title of an interconnection network in the net table of extraction a copy of it schematic diagram;

4, in the net table of another part of schematic diagram, judge whether to find identical interconnection network title;

If not identical, executive logging information; If identical, then remove comparison node name data, if identical, reject, if different, recorded information.Continue to extract next interconnection network title, nodename data.

5, judge whether that all interconnection networks, nodename data all compare;

If not, extract next interconnection network title, nodename data are compared; If so, recorded information.

6, judge whether record information list is empty,

If record information list is empty, two parts of schematic diagrams before and after the correcting of indication circuit plate are identical, not there are differences, and return to end; If different, show that two parts of schematic diagrams are variant, show recorded information, return to end.

Above-mentioned flow process can realize by following program:

7, in schematic diagram net table, the process of the comparison of data message realizes by following program:

#include<stdio.h>

#define?MAX?100

int?main(void)?{

char?*sourse,*dst;

char?a[MAX],b[MAX];

inti=0,dstlen=0,flag=0;

sourse=a;

dst=b;

printf("Input?the?sourse?string\n");

gets(sourse);

printf("Input?the?dst?string\n");

gets(dst);

while(*dst++!='\0')

dstlen++;

dst=b;

while(*sourse!='\0')

{

If (* sourse==*dst)/* obtain first equal character */

{

dst++;

i++;

flag=1;

}

If (* dst==' 0') if/* word string finishes, exit */

break;

sourse++;

If (flag) if/* first character equates, judges whether second character of word string equates */if (* dst unequal to * sourse) with the ensuing character of female string

{

i=0;

break;

}

}

if(i!=dstlen)

printf("dst?string?not?in?sourse?string\n");

else

printf("In?it\n");

}

The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (4)

1. a circuit theory diagrams net table comparison method, to calculate by nodal information or component information in extraction circuit theory diagrams net table, thereby the consistance of each nodal information or component information in net table relatively, thereby judge that each network node connects the consistance being connected with components and parts pin, or the consistance of judgement components and parts item, encapsulation, the final difference that embodies the inconsistent or components and parts that connect, and inconsistent result is divided into the different classes of accuracy of carrying out output display and can guarantee result.

2. a kind of circuit theory diagrams net table comparison method according to claim 1, is characterized in that, described nodal information comprises network node title and interconnection network title.

3. a kind of circuit theory diagrams net table comparison method according to claim 1, is characterized in that, described component information comprises components and parts item and packaging information.

4. a kind of circuit theory diagrams net table comparison method according to claim 2, is characterized in that, described method specifically comprises the following steps:

A, two parts of schematic diagrams before and after circuit board correcting are derived respectively to net table;

Interconnection network title, nodename data in the net table of two parts of schematic diagrams that B, extraction are put in order;

The title of an interconnection network in the net table of C, extraction a copy of it schematic diagram;

D, in the net table of another part of schematic diagram, judge whether to find identical interconnection network title:

If not identical, executive logging information; If identical, then remove comparison node name data, if identical, reject, if different, recorded information; Continue to extract next interconnection network title, nodename data;

E, judge whether that all interconnection networks, nodename data all compare:

If not, extract next interconnection network title, nodename data are compared; If so, recorded information;

F, judge that whether record information list is empty:

If record information list is empty, two parts of schematic diagrams before and after the correcting of indication circuit plate are identical, not there are differences, and return to end; If different, show that two parts of schematic diagrams are variant, show recorded information, return to end.