JPH01293700A - Automatic wiring apparatus - Google Patents

Abstract

PURPOSE:To reduce the number of unused wires by a method wherein a wiring width of a bundle-shaped connection (bundled wires) between circuit elements is computed and, when a wiring region is narrower than the wiring width of the bundled wires, the bundled wires are divided and wired in parallel. CONSTITUTION:A bundled-wires detection means 1 takes out a piece of connection information from a design data base 7, detects bundled wires between circuit elements and stores this information in a bundled-wires table 8. A wiring- model formation means 2 takes out a piece of arrangement information of a circuit element from the data base 7 and constructs a wiring model in a working region 9. A wiring-region search means 4 searches, on the working area 9, a vacant region of a wiring width computed by a wiring-width computation means 3 from the table 8. When a wiring region satisfying the wiring width cannot be obtained, a bundled-wires division means 5 divides the bundled wires and registers this information again in the table 8. A route decision means 6 decides a wiring route in the wiring region obtained in the working area 9 and writes it in the data base 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an information processing device, and particularly to an automatic wiring device for electronic circuits.

[Conventional technology]

In conventional wiring methods used for automatic wiring of printed circuit boards and the like of electronic devices, one connection (single wire) between pins of one circuit component is treated as a unit of processing.

[Problem to be solved by the invention]

Since the above-described conventional automatic wiring system processes one connection as a unit of processing, the wiring route of a part of the bundled wires often interferes with other wirings of the same bundled wires.

Therefore, there was a drawback that there were many unwired lines.

As shown in FIG. 2, this was noticeable when surface mount components were used.

An object of the present invention is to provide an automatic wiring device that solves the above problems.

[Means to solve the problem]

In order to achieve the above object, the present invention provides an automatic wiring device that connects circuit elements of an electronic circuit, in which consecutively arranged pins on one circuit element and consecutively arranged pins on another circuit element are connected to each other. Wire bundle detection means for detecting wire bundles; Wire width calculation means for calculating the wiring width of the wire bundle from the number of connections in the wire bundle detected by the wire bundle detection means; Wire width calculated by the wire width calculation means. wiring area searching means for searching for a wiring area; and bundled line dividing means for dividing the bundled wires when the wiring area searched by the wiring area searching means is less than the wiring width calculated by the wiring width calculating means. It has the following.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

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

The present invention includes a wire bundle detection means 1, a wiring model creation means 2,
Wiring width calculating means 3, wiring area searching means 4, wire bundle dividing means 5, route determining means 6, design database 7,
It consists of a wire bundle table 8 and one work area 9.

As shown in FIG. 6, the wire bundle detection means 1 extracts connection information from the design database 7, and detects pins arranged in succession on circuit elements 41 to 45 as shown in FIG. A bundled connection (bundled wire 46 and bundled wire 47) between the pins arranged in succession on 45 is detected, and the bundled wire table 8
Store in.

When all bundled wires are detected from the connection information, the wiring model creation means 2 is activated. As shown in FIG. 7, the wiring model creation means 2 retrieves the circuit element arrangement information from the design database 7 and constructs a wiring model in the work area 9. Next, the wiring width calculation means 3 is activated. Wiring width calculation means 3
As shown in FIG. 8, the bundled wires are taken out one by one from the bundled wire table 8, and the wiring width of the bundled wires is determined by the first equation.

Wiring width = number of connections in wire bundle x (single wire wiring width + wiring spacing)
(1) Next, the wiring area search means 4 is activated.

As shown in FIG. 9, the wiring area searching means 4 searches the work area 9 for an empty area of the wiring width calculated by the wiring width calculating means 3 for each wire bundle. In the arrangement shown in FIG. 5, a wiring area 54 is obtained for the wire bundle 46 shown in FIG. 4, and a wiring area 55 is obtained for the wire bundle 47. 51 to 53 indicate pads of each circuit element 41, 43, 44, and 45, respectively. 56
indicates a failure.

If a wiring area satisfying the wiring width cannot be obtained, the wire bundle dividing means 5 is activated. As shown in FIG. 10, the wire bundle dividing means 5 calculates the number of connections in the wire bundle that can be wired from the obtained wiring area using the second equation.

Next, divide the bundled wire into two parts, one with the determined number of connections and one with the remaining number of connections, delete the original bundled wire from the bundled wire table 8, and replace the two divided wires with the bundled wire. After zero is registered in the table 8, the wiring width calculation means 3 is activated again.

If a wiring area satisfying the wiring width is obtained and the circuit elements can be connected, the route determining means 6 is activated.

As shown in FIG. 11, the route determining means 6 determines the wiring route by filling the obtained wiring area in the work area 9 in the order of the pin arrangement, and writes the bundled wires from the bundled wire table 8 into the design database 7. Delete 6 Next, the wiring width calculation means 3 is called again.

These processes are continued until there are no more bundled wires stored in the wire bundle table 8.

Although the above operation has been explained focusing only on bundled wires, wiring routes can be determined for all connections by considering single wires as part of bundled wires.

The results of processing in this manner are shown in FIG.

〔Effect of the invention〕

As explained above, the present invention detects bundled wires, calculates its wiring width, searches for an area with the calculated wiring width, and when the area is smaller than the wiring width, divides the bundled wires and routes them in parallel. This has the effect of reducing the number of unwired wires.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a printed pattern diagram showing the wiring results using a conventional wiring method.
FIG. 3 is a printed pattern diagram showing the wiring results according to the wiring method of the present invention, FIG. 4 is a logic circuit diagram showing connection relationships,
5 is a layout diagram of circuit elements in the logic circuit diagram shown in FIG. 4, FIG. 6 is a flowchart of the wire bundle detection means shown in FIG. 1, and FIG. 7 is a flowchart of the wiring model creation means shown in FIG. 1. Flowcharts, FIG. 8 is a flowchart of the wiring width calculation means shown in FIG. 1, FIG. 9 is a flowchart of the wiring area search means shown in FIG. 1, FIG. 10 is a flowchart of the wire bundle division means shown in FIG. 1, FIG. 11 is a flowchart of the route determining means shown in FIG.

Claims (1)

[Claims] (1) In automatic wiring equipment that connects circuit elements of electronic circuits, bundled wire detection detects bundled wires between consecutive pins on one circuit element and consecutive pins on another circuit element. means, a wiring width calculation means for calculating the wiring width of the wire bundle from the number of connections in the wire bundle detected by the wire bundle detection means, and a wiring region for searching for a wiring region of the wire width determined by the wire width calculation means. The present invention is characterized by comprising: a search means; and a bundled line dividing means for dividing the bundled wires when the wiring area searched by the wiring area searching means does not have the wiring width determined by the wiring width calculating means. Automatic wiring device.