JP2818687B2 - Fuse arrangement inspection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an improvement in a fuse arrangement inspection apparatus for inspecting, for example, an arrangement pattern of fuses mounted on a junction box for an automobile.

[Conventional technology]

In order to inspect an arrangement pattern of a plurality of fuses on a junction box, an illuminating unit for illuminating the arrangement pattern of the fuses, an imaging unit such as a video camera for imaging a color pattern of the fuses, and an imaging unit using the imaging unit 2. Description of the Related Art A fuse array inspecting apparatus including image processing means for inspecting a fuse array pattern by processing a signal is used. The imaging signal is converted by the color sensor into a binary signal of a specific color, and the image processing unit checks whether the binary signal matches the set value and checks the arrangement of the fuses.

In one conventional technique, a high-frequency fluorescent lamp is used as an illuminating means. However, since this fluorescent lamp has a light-emitting portion, it cannot be uniformly illuminated and a dark place is generated. Was difficult.

For this reason, recently, an illuminating means has been used in which light from a light source that generates relatively strong light such as a halogen lamp is directly applied to a fuse through a light guide.

[Problems to be solved by the invention]

However, since the fuse generally has a glossy translucent surface, it was difficult to identify the light when the linear strong light from the light guide was directly applied to the surface of the fuse because the light reflected and glowed. .

For this reason, recently, it has been attempted to attach a diffusion plate to the light emitting surface of the light guide. In the proposed illumination means, light is diffused by the diffusion plate, so that reflection from the surface of the fuse is somewhat reduced.However, since the diffusion plate is in close contact with the light guide, diffusion is small, and reflection from the fuse surface is reduced. Could not be sufficiently suppressed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a fuse array inspection apparatus provided with an illuminating means capable of avoiding the above-mentioned drawbacks, reliably suppressing reflection from the surface of the fuse, and uniformly irradiating the fuse. is there.

[Means for solving the problem]

In order to solve the above-described problems, the present invention provides an illumination unit that illuminates a color pattern of a plurality of fuses, an imaging unit that captures an image of the color pattern of the fuse, and a fuse that processes an image signal from the imaging unit. In the fuse array inspection apparatus provided with an image processing unit for inspecting an array pattern, the illumination unit includes a light guide that guides light from the light source, and a light that is arranged away from the light guide and emitted from the light guide. And a diffuser plate for receiving the fuse array inspection device.

[Action]

When the diffuser is placed away from the light guide in this manner, the light diffused by the light guide is further diffused by the diffuser, so that the degree of light diffusion is large, and thus the light radiated to the surface of the fuse. Is softened and is not reflected on the surface of the fuse. Therefore, the arrangement color of the fuse can be reliably identified, and the inspection can be performed with high accuracy.

〔Example〕

Embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a fuse arrangement inspection apparatus 10 according to the present invention,
This fuse array inspection device 10 is a junction box
Illumination means 16 for illuminating the color pattern of the plurality of fuses 14 on the image pickup device 12, imaging means 18 such as a video camera for imaging the color pattern of the fuse 14, and an image signal Si from the imaging means 18 And an image processing means 20 for inspecting 14 arrangement patterns.

In the illustrated embodiment, a color sensor 22 is disposed between the imaging means 18 and the image processing means 20, and an imaging signal Si from the imaging means 18 is converted into a binary signal Sd of a specific color by the color sensor 22. Is done.

The image processing means 20 checks the arrangement of the fuses 14 by checking whether the binarized signal Sd matches the set value.

The illuminating means 16 includes a light source 24 such as a halogen lamp, a light guide 26 for guiding the light from the light source 24, and one or more light sources 24 arranged apart from the light guide 26 and receiving light emitted from the light guide 26. And a plurality of diffusion plates 28 (see FIG. 2).

In FIG. 1, reference numeral 30 denotes a monitor television for monitoring the output of the image processing means 20.

Next, when the operation of the fuse array inspection device 10 of the present invention is described, the light from the light source 24 is applied to the fuse 14 on the joint box 12 through the light guide 26 and the diffusion plate 28. Since the fuse 14 has a different color depending on its type (ampere capacity) in advance, the fuse 14 on the joint box 12 presents a color pattern corresponding to the type, and this color pattern is imaged by the imaging means 18 and the imaging signal Si is obtained. can get. This imaging signal Si is supplied to the color sensor 22
Is converted into a binarized signal Sd, and the pattern of the binarized signal Sd is compared with the pattern set by the image processing means 20 to check whether the fuses 14 on the joint box 12 have a predetermined arrangement. Is done.

Illuminating means 16, as already mentioned, because it has a diffusion plate 28 disposed away from the light guide 26, as shown in FIG. 2, the light diffused as shown by the light guide 26 by L ₁ There is diffused as shown further by L ₂ by the diffusion plate 28. Therefore, the degree of light diffusion increases,
Light applied to the surface of the fuse 14 is softened and is not reflected on the surface of the fuse 14.

〔The invention's effect〕

According to the present invention, as described above, since the diffusion plate is arranged away from the light guide, the light diffused by the light guide is further diffused by the diffusion plate, and the degree of light diffusion is increased. Since the light applied to the surface of the fuse is not reflected, the arrangement of the fuses can be reliably identified, and the light is evenly applied to the surface of the fuse, so that the inspection can be performed with high accuracy. There are benefits.

[Brief description of the drawings]

FIG. 1 is a system diagram of a fuse arrangement inspection apparatus according to the present invention,
FIG. 2 is an enlarged explanatory view of a lighting means used in the present invention. 10 ... fuse arrangement inspection device, 12 ... joint box, 14 ... fuse, 16 ... lighting means, 18 ... imaging means, 20 ... image processing means, 24 ... light source, 26 ... light guide, 28 ...... Diffusion plate.

Claims (1)

(57) [Claims] An illumination unit that illuminates a color pattern of a plurality of fuses; an imaging unit that captures an image of the color pattern of the fuse; and an image processing unit that processes an imaging signal from the imaging unit to inspect a fuse array pattern. Means, the lighting means,
A fuse array inspection device, comprising: a light guide for guiding light from a light source; and a diffusion plate disposed apart from the light guide and receiving light emitted from the light guide.