JPH01211079A - Printed board automatic wiring device - Google Patents

Abstract

PURPOSE:To automatically generate a jumper wire by generating the jumper wire at a place which satisfies specific conditions based on the searching status of a data cable and a labyrinth router by a jumper wire arranging part when a search by an automatic wiring part ends in failure. CONSTITUTION:An automatic wiring is executed at an automatic wiring part 1 by a labyrinth method or a segment searching method, etc. When the search by the automatic wiring part 1 ends in failure, and a control part 3 receives the signal of search failure from the automatic wiring part 1, the control part 3 sends a command to a jumper wire arranging part 21 so that the part 21 can generate the jumper wire. The jumper wire arranging part 21 generates the jumper wire at the place to satisfy the following two conditions from the searching status of a jumper wire data table 22 and the labyrinth router. The above-mentioned two conditions are that the shape of the jumper wire is not extended over a prohibited area, and that one terminal out of two terminals of the jumper wire is extended over a searched area, and the other terminal is extended over an unsearched area in a jumper wire data storing part 22. Thus, wiring work using the jumper wire can be automated.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention is an automatic printed circuit board design device that automatically designs printed circuit boards with the help of a computer. The present invention relates to wiring devices, especially jumper wire automatic generation functions.

[Prior Art] In this type of printed circuit board automatic wiring apparatus, conventional methods for automatically designing printed circuit board wiring (patterns), ie, automatic wiring methods, include a maze method and a line segment search method.

[Problem to be solved by the invention] In such an automatic wiring method, as shown in FIG.
When attempting to connect two points on the N printed circuit board (terminal S of capacitor C1 and terminal G of resistor R1), the designer creates a jumper wire J1 as shown by the dotted line in the diagram and manually performs the wiring work. was.

Conventionally, when wiring using jumper wires, it was necessary to manually wire the jumper pattern.
The problem was that it took a lot of time.

SUMMARY OF THE INVENTION An object of the present invention is to solve these problems and to provide an automatic printed circuit board wiring device having a function of automatically generating jumper wires.

[Means for Solving the Problem] In order to achieve such an object, the present invention provides an automatic wiring section that automatically performs wiring using a maze method, a line segment search method, etc., and a system that determines the terminal position of a jumper wire. and a control section that controls the automatic wiring section to connect jumper wires and component terminals using a maze router, and a control section that controls the connection of jumper wires and component terminals using a maze method router, and a component shape having addresses corresponding to coordinate values when the printed circuit board is divided into mesh shapes. The area in which generation of jumper lines such as data is prohibited is composed of a jumper line data storage section having a mesh table with a flag set, and a jumper line arrangement section for arranging jumper lines while referring to the mesh table. If the automatic wiring section fails in the search, the jumper wire placement section generates a jumper wire at a location that satisfies the following conditions (1) and (2) based on the data table and the search status of the maze router. The invention is characterized by comprising a jumper wire automatic generation section.

■The shape of the jumper wire does not overlap the prohibited area in the jumper wire data storage section.

- Of the two terminals of the jumper wire, one terminal should be connected to the searched area and the other terminal should be connected to the unsearched area.

[Function] In the present invention, the automatic wiring section performs automatic wiring using a maze method, a line segment search method, or the like. If the automatic wiring section fails in the search, the jumper wire placement section refers to the jumper wire data table, searches for a location where a jumper wire of the specified length can be placed, and places the jumper wire. In this case, the jumper wire can be generated at any angle.

[Example code] Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a conceptual main part configuration diagram showing an embodiment of the printed circuit board automatic wiring device according to the present invention. In the figure, 1 is an automatic wiring section that automatically performs wiring using the well-known maze method, and 2
3 is a jumper wire automatic generation section, and 3 is an m control section.

The jumper wire automatic generation section 2 includes a jumper wire arrangement section 21
and a jumper line data storage section 22. The jumper wire data storage unit 22 prohibits the generation of jumper wires such as 6-component shape data, which is a memory for a mesh table, and has addresses corresponding to coordinate values when the printed circuit board is divided into mesh shapes. If there is an area,
The flag of the jumper line data storage unit corresponding to that area becomes ON (for example, data of "1").

The jumper wire arrangement section 21 is for arranging jumper wires while referring to the mesh table.

The control unit 3 determines the terminal position of the jumper wire and connects the jumper wire and the component terminal using a maze router.

The operation in such a configuration will be explained using the example of the printed circuit board shown in FIG. Now assume that a wire is connected from terminal S (start point) of capacitor C1 to terminal G (goal point) of resistor R1.

(1) Initialization As an initialization process, information necessary for generating a jumper line, such as jumper line generation prohibition information, is set in the jumper line data storage section 22. Actually, the third
As shown by the shaded area in the figure, the part shape is set on the mesh table as jumper wire prohibition information. This indicates that jumper wires should not be generated on top of the component. Here, the existing wiring AB in FIG. 2 does not pose an obstacle to the jumper wire, so it is not registered in the mesh table.

(2) The wiring start control unit 3 uses a maze router in the automatic wiring unit 1 to
A command is given to search toward the target point G. However, the existing wiring AB becomes an obstacle and the search fails. The area that can be reached by search from the starting point S is the shaded area in FIG.

(3) When the jumper wire automatic generation control section 3 receives a search failure signal from the automatic wiring section 1, it issues a command to the jumper wire placement section 21 to generate a jumper wire.

The jumper wire placement unit 21 generates jumper wires at locations that satisfy the following conditions based on the jumper wire data table 22 and the search status of the maze router. The length of the jumper wire to be used is set in advance by the designer.

The conditions are as follows.

(2) In the jumper line data storage section 22, the shape of the jumper line does not overlap the prohibited area (the shaded area in FIG. 3).

(2) Of the two terminals of the jumper wire, one terminal should be connected to the searched area (the shaded area in FIG. 4), and the other terminal should be connected to the unsearched area (the blank area in FIG. 4).

If there are a plurality of positions that satisfy the 0 condition in which the jumper wire component is placed at a position that satisfies the above conditions, an evaluation value is assigned and the best point is selected.

(4) The relocation control section 3 takes the position where the jumper wire is generated from the jumper wire arrangement section 1. If the jumper wire cannot be generated, the search will fail.

Suppose now that the jumper wire placement section returns an answer that the jumper wire J1 has been generated as shown in FIG. The control unit 3 connects the terminal of the jumper wire to the temporary goal point G°.
Then, as a temporary starting point S°, the net of SG is decomposed as a new connection of two pin pairs SG' and S'-G.

Since success in connecting S-G' has already been guaranteed in the previous search, a command is issued to the automatic wiring section 1 again to connect S'-G.

If the search for S'-G is successful here, it means that S-G has been connected using jumper fiJ1.

When the search fails, the control unit 3 determines whether to generate the next jumper line and continue the search, or to terminate the search.

Automatic wiring of printed circuit boards can be realized by repeating steps (2) to (4) above.

Note that the jumper wire can be generated at any angle.

[Effects of the Invention] As explained in detail above, according to the present invention, it is possible to automate the wiring work using jumper wires, which was conventionally done manually, and also to reduce the time required for the wiring work. This also has the effect of improving the wiring rate in automatic wiring.

[Brief explanation of the drawing]

FIG. 1 is a conceptual main part configuration diagram showing an embodiment of the printed circuit board automatic wiring device according to the present invention, FIGS. 2 to 5 are printed circuit board wiring diagrams for explaining the operation, and FIG. 6 is a conventional printed circuit board wiring diagram. FIG. 2 is a printed circuit board wiring diagram for explaining the operation of the automatic printed circuit wiring device of FIG. DESCRIPTION OF SYMBOLS 1... Automatic wiring part, 2... Jumper wire automatic generation part, 3... Control part, 21... Jumper wire arrangement part, 2
2...Jumper wire data storage section. Fig. 1 2 jumper automatic generation section Fig. 2 Fig. 3

Claims (1)

[Scope of Claims] A printed circuit board automatic wiring device that automatically wires a printed circuit board, comprising an automatic wiring section that automatically performs wiring using a maze method, a line segment search method, etc., and a terminal position of a jumper wire. a control unit that performs control to determine and connect jumper wires and component terminals using a maze method router in the automatic wiring unit; It is composed of a jumper line data storage unit having a mesh table in which a flag is set in an area where the generation of jumper lines such as shape data is prohibited, and a jumper line placement unit that arranges jumper lines while referring to the mesh table. If the automatic wiring section fails in the search, the jumper wire placement section generates a jumper wire at a location that satisfies the following conditions (1) and (2) based on the data table and the search status of the maze router. 1. A printed circuit board automatic wiring device comprising: a jumper wire automatic generation section. (1) The shape of the jumper line does not overlap the prohibited area in the jumper line data storage unit. (2) Out of the two terminals of the jumper wire, one terminal should be connected to the searched area and the other terminal should be connected to the unsearched area.