CN107643472B

CN107643472B - Method for calculating difference degree of short circuit break table

Info

Publication number: CN107643472B
Application number: CN201710823123.9A
Authority: CN
Inventors: 赵浩华; 高志齐; 孙伯乐; 王恒斌; 刘亚国
Original assignee: CHANGZHOU TONGHUI ELECTRONICS Co Ltd
Current assignee: CHANGZHOU TONGHUI ELECTRONICS Co Ltd
Priority date: 2017-09-13
Filing date: 2017-09-13
Publication date: 2020-02-18
Anticipated expiration: 2037-09-13
Also published as: CN107643472A

Abstract

The invention relates to a method for calculating the difference degree of a short-circuit list, which comprises the following steps: 1) scanning short circuit breaking tables of known TypeC wires in all directions and recording the short circuit breaking tables as a table N; n is an integer greater than or equal to 1; 2) scanning the TypeC wire to be tested to obtain a short open circuit table of the TypeC wire, and recording the short open circuit table as a table M; 3) respectively converting the table N and the table M into a relation table of an undirected graph, and recording the relation table as a table Ni and a table Mi; 4) subtracting the table Ni from the table Mi respectively to obtain two groups of tables which are recorded as the table Ni-Mi and the table Mi-Ni respectively; 5) the square sum of all values in Table Ni-Mi and Table Mi-Ni was calculated to obtain the degree of difference. The invention obtains the insertion direction by digitizing the difference degree between the two short break meters and then comparing the difference degree.

Description

Method for calculating difference degree of short circuit break table

Technical Field

The invention relates to the field of electronic testing, and particularly relates to a method for testing a TypeC wire, in particular to a method for calculating the difference degree of a short-circuit break table.

Background

Today TypeC wire is in wider and wider use and develops more and more rapidly, from the earliest single-headed TypeC to the current double-headed TypeC. The method has the biggest characteristic that the method has no insertion direction, and both forward insertion and backward insertion can be used, thereby greatly facilitating each user. While there is no distinction between forward and reverse insertion for the user, there is a distinction for the test because the short break tables for forward and reverse insertion are not the same. Then face-to-face and anti-face 2 cases are required for the single-headed TypeC, while face-to-face, anti-face, anti-face 4 cases are required for the double-headed TypeC. There are 8 cases where the two TypeC heads of the latest generation TypeC wire are different. How to accurately judge the current insertion direction of the wire becomes a key technical problem.

In the prior art, a method for judging the current insertion direction of a wire rod is as follows: and comparing the short circuit list of the to-be-tested element with the known standard short circuit list in various directions to determine which difference is the smallest and which direction is the same.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: a method for calculating the difference degree of short-circuit breaking meters is disclosed, which includes digitizing the difference degree between two short-circuit breaking meters, and comparing the difference degrees to obtain the insertion direction.

The technical scheme adopted by the invention is as follows: a method for calculating the difference degree of a short-circuit list comprises the following steps:

1) scanning short circuit breaking tables of known TypeC wires in all directions and recording the short circuit breaking tables as a table N; n is an integer greater than or equal to 1;

2) scanning the TypeC wire to be tested to obtain a short open circuit table of the TypeC wire, and recording the short open circuit table as a table M;

3) respectively converting the table N and the table M into a relation table of an undirected graph, and recording the relation table as a table Ni and a table Mi;

4) subtracting the table Ni from the table Mi respectively to obtain two groups of tables which are recorded as the table Ni-Mi and the table Mi-Ni respectively;

5) the square sum of all values in Table Ni-Mi and Table Mi-Ni was calculated to obtain the degree of difference.

Further, in step 3), the method for converting the table N and the table M into the relational tables of the undirected graph respectively includes: the relationship between the points of the wire and the points is listed by a table.

In step 4), the table Ni and the table Mi are subtracted from each other, the same point is marked as 0, and the different points are marked as ± 1.

Further, when the table Ni and the table Mi are subtracted from each other, the position with a dot minus the position without a dot is marked as 1; the position without dots minus the position with dots is noted as-1.

The invention has the beneficial effects that: the insertion direction is derived by digitizing the degree of difference between the two short trip meters and then by comparing the degree of difference.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic diagram showing the connection and disconnection of 2 sets of wires;

FIG. 2 is an undirected graph of a set of points (a) - (d);

FIG. 3 is an undirected graph of another set of points (a) - (c).

Detailed Description

The invention will now be described in further detail with reference to the drawings and preferred embodiments. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

The short disconnection table of the wire rod can be regarded as an unweighted undirected graph in graph theory mathematics, and the relation between points is not directional and has no weight. As shown in fig. 2, is an undirected graph of group 1 points,

from the relationship of each point in fig. 2, the set of undirected graphs is organized as a matrix table as follows:

the table lists the relationship of each point to other points, see table 1:

1
				2	3
3	2
				4	5	6
5	4	6
				6	4	5
7	8	9	10
				8	7	9	10
9	7	8	10
				10	7	8	9

TABLE 1

As shown in FIG. 3, is an undirected graph of group 2 points: from the relationship of each point in fig. 3, the set of undirected graphs is organized as a matrix table as follows, see table 2:

1	2	3
				2	1	3
3	1	2
				4	5	6
5	4	6
				6	4	5
7	8	9	10
				8	7	9	10
9	7	8	10
				10	7	8	9

TABLE 2

Table 1 minus table 2, if the same point is noted as 0, the different points are noted as ± 1, since there is no weight, it is noted as ± 1.

Then there are

0	-1	-1	0
				0	-1	0	0
0	-1	0	0
				0	0	0	0
0	0	0	0
				0	0	0	0
0	0	0	0
				0	0	0	0
0	0	0	0
				0	0	0	0

TABLE 3

In the same way, subtracting table 1 from table 2, we have:

0	1	1	0
				0	1	0	0
0	1	0	0
				0	0	0	0
0	0	0	0
				0	0	0	0
0	0	0	0
				0	0	0	0
0	0	0	0
				0	0	0	0

TABLE 4

Then the difference x1²+x2²+x3²+…xn²

Where x1 to xn are all values in tables 3 and 4.

So the difference between table 1 and table 2 is (-1)²+(-1)²+(-1)²+(-1)²+1²+1²+1²+1²＝8。

The above is a method for calculating the difference degree by using an unweighted undirected graph, and then the difference degree between 2 short break tables can be calculated by using the method, for example, as follows:

as shown in fig. 1, the difference was calculated by taking 2 sets of lines, i.e., 4 lines and 8 points.

Firstly, the short break table of 2 groups of lines is arranged out: see tables 5 and 6

1	2
		3	4
5	6
		7	8

TABLE 5

1	2
		3	6
4	5
		7	8

TABLE 6

The short trip tables shown in tables 5 and 6 are then converted into the relational table of the undirected graph: see tables 7 and 8

1	2
		2	1
3	4
		4	3
5	6
		6	5
7	8
		8	7

TABLE 7

1	2
		2	1
3	6
		4	5
5	4
		6	3
7	8
		8	7

TABLE 8

The two tables are then subtracted from each other to yield tables 9 and 10:

0	0
		0	0
0	1
		0	1
0	1
		0	1
0	0
		0	0

TABLE 9

0	0
		0	0
0	1
		0	1
0	1
		0	1
0	0
		0	0

Watch 10

Then the degree of difference is 1²+1²+1²+1²+1²+1²+1²+1²＝8。

The calculation principle for calculating the difference degree of the short break table is as above, and the difference degree value between two short break tables can be comprehensively calculated.

And finally, comparing the obtained difference values, and finding out the difference value of the minimum value from the difference values, wherein the table corresponding to the difference values is the insertion direction of the Typec wire, and then the Typec wire is tested according to each item in the table.

While particular embodiments of the present invention have been described in the foregoing specification, various modifications and alterations to the previously described embodiments will become apparent to those skilled in the art from this description without departing from the spirit and scope of the invention.

Claims

1. A method for calculating the difference degree of a short-circuit list is characterized by comprising the following steps:

2. The method of calculating a shortlist variation as set forth in claim 1, wherein: in the step 3), the method for converting the table N and the table M into the relational tables of the undirected graph respectively comprises the following steps: the relationship between the points of the wire and the points is listed by a table.

3. The method of calculating a shortlist variation as set forth in claim 1, wherein: in the step 4), the table Ni and the table Mi are subtracted from each other, the same point is marked as 0, and different points are marked as ± 1.

4. A method of calculating a difference degree of a short-circuit list according to claim 3, characterized in that: when the table Ni and the table Mi are subtracted from each other, the positions with points are subtracted from the positions without points, and the result is marked as 1; the position without dots minus the position with dots is noted as-1.