JPS629236A - Color order deciding method for object of inspection having plural colors - Google Patents

Abstract

PURPOSE:To realize a deciding method which performs display, recording, and confirming operation automatically and accurately in a short time by supplying sensor inputs of the primary colors to a color sensor controller and deciding color order by using a specific equations. CONSTITUTION:The color order deciding method uses a device consisting of a color sensor and a color sensor controller. Then, inspection master values are inputted to supply sensor inputs of the primary colors to the color sensor controller, and those values are red R10, R20-Rn0, green G10, G20-Gn0, and blue B10, B20-Bn0 in the order of 1, 2-(n). Data on the object of inspection are inputted and sampled values at this time are red R11, R21-Rn1, green G11, G21-Gn1, and blue B11, B21-Bn1 in the order of 1, 2-(n). Calculations based upon equations are made to determine a color (n) with which l1n is minimum and this is repeated for R1, G11, and B11-Rn1, Gn1. Then n1, n2-nn are repeated and it is decided that the object of inspection is normal when n1=1, n2=2, n3=3-nn=n.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is applicable to two methods, for example: ■The color of the inspected object has multiple colors suitable for detecting color codes, ■creating printing misalignment in printing machines, ■detecting check marks in packaging and bag-making machines, and ■detecting the presence or absence of color codes on resistors. This relates to the sequential judgment (inspection) method.

(Prior art) The plurality of colors provided on an object to be inspected and their color order (color arrangement order) are mainly confirmed by comparing them with a color sample with the human eye, or are memorized in the brain and then inspected. The so-called visual (unaided eye) judgment was mainly performed by comparing (selecting) good products and defective products by comparing them with a master (a sample that serves as a sample of the object to be inspected).

"Purpose of the Invention" (Problems to be Solved by the Invention) The visual judgment of the prior art is subject to subjectivity, prejudice, dogma, and physiological individual differences, as well as variations in standards due to changes in the physical condition of the individual. temporary oversight.

1) Difficult to judge a large amount of data over a long period of time with a small number of people. Furthermore, problems such as instability and uncertainty were observed. It is an object of the present invention to solve this problem.

"Structure of the invention" (Means for solving problems) In order to solve the conventional problems ■～■, by making full use of physical (optical), electrical and mechanical means superior to visual judgment, It is an object of the present invention to provide a method for determining the color order of an object to be inspected having a plurality of colors that can automatically, quickly, and accurately confirm the display record. It is as follows. That is, the color sensor control device is used to determine whether the color order is correct or incorrect based on the difference between the inspection master and the object to be inspected. If you import the sensor input of the primary color and increase the number of samples, take the average value, and now use this value as the color order of the inspection master.Red
Green nl Rlo G
to Bt.

2 R20G20 B20n
RnOGno BnO, and then input the data for the limb test object, and at this time, the sample values are arranged in the color order of the test object: Red Green Blue
R11Glt Bll2
R21G21 B21n
Rlt Gnt Bnt
As a method for determining the order of two colors based on this data.

In −(R11-RIG)2+(Gll-GIG)2
+(Bll-Bto)2112- (R11-R20
) +(Gtt-G2G) +(Bll-B10)
21! n −(Rtt−Rno) +(Gtt−G
no) + (Btt-Bno)2, and 4! n
Determine the color n that minimizes .

This is old 1. Gtt, BltA-Rnt, Gnt
, Bnt and repeats nl n 2 nn, and if the result is nl = 1 R2-2 B8 " 3 nn -n, then the color sensor control device performs arithmetic processing to pass the test. This is a method for determining the color order of an object to be inspected.

(Example) What corresponds to the object to be inspected is a connector 5 of an electrical component, which will be described later, and what corresponds to the inspection master is a sample (standard product sample) of the object to be inspected, which will be described later. 1st
Figures 6 through 6 show an embodiment of the present invention. Inside the color sensor 1, there is a light bulb 2 that emits light, a second lens 7 that passes, refracts, and condenses the light, a pinhole plate 4 through which the light passes, and a light bulb 2 that passes through the pinhole plate 4. A second lens 7 serves to connect a light spot onto the electric wire 6 of the connector 5, which is continuously carried, and the reflected light from the electric wire 6 is passed through a half mirror 8 into red and green.

Dichroic mirror 9 separates into the three primary colors of blue.

A preamplifier 1 that detects the separated three primary colors of red, green, and blue using a light receiving element 10 and amplifies the detected three primary colors.
1 and this amplified red light and green light.

Peak hold to keep the green signal and green signal at their respective peaks 12. 13, 14, and a connector sensor 15 provided for checking the presence or absence of the connector 5 and for positioning it. The electric wire sensor 16 is connected to the color discrimination circuit 17 and the color order judgment circuit 19, and the result is 1 pass/fail (color order judgment result, good product).

The product is output and displayed as a defective product.

The control key switch 18 is connected to a color classification and color order determination circuit 19, so that the switch can be opened and closed. Reference numeral 20 denotes a color sensor control device, which mainly controls peak hold 12. 13°14, color discrimination circuit 1
It is composed of a 72-color order determination circuit 19 and a control key switch 18.

The specifications of the above embodiment are as shown in the following table.

In this embodiment, for example, the number of electric wires 6 attached to the inspection master and the connector 5, which is the object to be inspected, is 12, and the detected colors and the arrangement order (color order) of the colors are 12.

Black, brown, red, orange, yellow, green, blue, purple, gray, white, light blue.

There were 12 peach colors, but this one: Don't stick to it (.

Depending on the application, it may be available in multiple colors other than this one.

This color order can be set to a desired order, or the number of electric wires can be set to a desired number. In this example.

I used a light bulb as a light source, but don't stick to this (
Of course, other light sources 2 such as light emitting diodes may also be used.

(Function) As in this embodiment, the reflected light projected onto the electric wire (inspection master or inspected object) 6 of the connector 5 equipped with 12 colors (plural) at the same time [red, green, and blue] No. 3
Primary color signals (separated and detected, then the signal from this reflected light is a preset connector standard product (@Survey Master)
The color order determination circuit 19 operates to determine whether or not the color is within the reference value range.The color order determination circuit 19 performs the actual color order determination method as follows. Figure 1.

A comparative analysis process is performed by the color sensor control device 20 of FIGS. 2 and 5. Figure 6 shows the details.

This is a three-dimensional graph. Namely.

Connector standard product (inspection master) for teeing and ching
] It takes in the sensor input of the three primary colors of red, green, and blue through direct input. If you increase the number of samples.

Take that Hirasaki value. Now, set this value to Inspection master color order: Red, Green, Blue 1 wire outlet Rlo Qto Bt.

〃 2 Today R2OG20 820 wire n Today
RnOGno Bn.

shall be. (In this example, the max of n is 20) Next, input the data for the object to be inspected (connector), and input each sample value at this time in the color order of the object to be inspected: Red Green Blue 1 wire Rlt Gll Bll〃 2
Honguchi R21G21 B21〃n wood grain R
Let it be nx Gnt Bni. Based on this data, the following 9-order method is used to determine the order of the two colors (not absolute colors).

l u −(Rtt−Rto) +(Gtt−Gto
) + (Btt-Bto)2012- (Rtt-
R20) +(Gll-G20) +(Btl-8
20) 21 ln − (Rtt − Rno) + (Gl
Calculate l (yno) + (Btt-Bno) 2 and determine the color n that minimizes dln.

This is Rzt, G +t, Btt-Bnt
, Gnt, and Bnt, and repeat nn. If the result is nl = 1 B2 - 2 n8 = 3 nn'' n, the test is passed.

The operating principle of the color order determining device of the present invention will be summarized.

It will look like this: (See Figures 1 to 6) ■The light emitted from the light bulb 6 is focused by lenses 3 and 7, and forms a light spot on the electric wire 6.

■゛1 [Reflected light from line 6 is dichroic mirror 9
is decomposed into the three primary colors of red, green, and blue, and each light receiving element 1
Detected by 0.

■Multiple wire colors can be distinguished based on the ratio of red, green, and blue performance signals.

(2) It determines whether the wire colors are arranged in a preset color order and outputs a 1 pass/fail output signal. In the example, the measurement time for one connector (12 wires and 12 colors) that is automatically and continuously transported by RT on a conveyor or other transport device is only 0.
It was 3 to 0.6 seconds.

"Effects of the Invention" According to the present invention, 1. For example, color order inspection of a plurality of electric wires 6 provided in a connector 5 of an electrical component can be performed automatically and with much higher efficiency than conventional visual (naked eye) inspection. Continuous and reliable color order discrimination is possible. According to the conventional visual inspection, due to the incorrect inspection of the order of two colors, the product does not operate even when used in electrical equipment, etc., whereas the judgment (inspection) of the present invention fails.

It has the advantage of being 100% operational. That is, since the measurement results are electrically read and determined, it is possible to avoid the individual differences caused by conventional visual inspection and increase the reliability of measurement, which also contributes to quality assurance.

It is possible to achieve the intended purpose.

Note that the present inventors are not limited to the above-mentioned embodiments and claims, and the invention is not limited to the above-mentioned embodiments and claims. Essential requirements stated in the scope, so-called main claims.

Various embodiments are possible.

[Brief explanation of the drawing]

The drawings show one embodiment of the color order determination device of the present invention, in which Fig. 1 is an overall perspective view; Fig. 2 is an overall block circuit diagram; Fig. 3 is an external appearance of a modified example of a connector center and an electric wire sensor. In FIG. 1IIi, (a) is a plan view. (B) is a front view and e) is a side view; FIG. 4 is a view of an exception to the deformation of the color sensor, and (A) is a front view. (B) is a side view; FIG. 5 is a current drawing of a modified example of the color sensor control device, (A) is a full-length view, @ is a side view; FIG. 6 is a connector (tested object) and This is a three-dimensional graph that compares and analyzes red, green, and blue electrical signals in connector standard products (inspection masters). Explanation of symbols 1... Color sensor 5... Connector (an example of an article equivalent to an inspection master or an object to be inspected) 6.
... Electric wires [a plurality of electric wires included in the connector 5,
Arrangement of a plurality of colors (color order) in the inspection master or the inspected object (corresponding to this) 20...Color sensor control device 15...Connector sensor 16...Wire sensor 17...Color Discrimination circuit 19 ... Color order judgment circuit prohibited 2 Figure 3 Figure 15 Fufu term m se 5 → - Figure 4 Figure 5 Procedural amendment (method) % formula % 1 Incident indication 1985 patent application No. 148546 Color order determination method for inspected objects with multiple colors 3 Person making the correction October 29, 1985

Claims (1)

[Scope of Claims] A color sensor control device is used to determine whether the color order is correct or incorrect based on the difference between an inspection master and an object to be inspected. , take in the sensor input of the three primary colors of blue, increase the number of samples, take the average value, and now change this value to the inspection master color order Red Green Blue 1 R_1_0 G_1_0 B_1_0
2 R_2_0 G_2_0 B_2_0:
: : : n
Set Rn_0 Gn_0 Bn_0, then input the data for the inspected object, and at this time, change the sample values in the order of the inspected object's color: Red Green Blue 1
R_1_1 G_1_1 B_1_1 2
R_2_1 G_2_1 B_2_1:
: : : n Rn_
1 Gn_1 Bn_1, the method of determining the color order based on this data is l_1_1=(R_1_1-R_1_0)^2+(G_
1_1-G_1_0)^2+(B_1_1-B_1_0
)^2l_1_2=(R_1_1−R_2_0)^2+
(G_1_1-G_2_0)^2+(B_1_1-B_
2_0)^2l_1n=(R_1_1-Rn_0)^2
+(G_1_1-Gn_0)^2+(B_1_1-Bn
_0) Calculate ^2, determine the color n that minimizes l_1n, and use this as R_1_1, G_1_1, B_1_1~Rn
Processing is performed up to _1, Gn_1, and Bn_1, and n_1 n_2: n_n is repeated, and if the result is n_1=1 n_2=2 n_3=3: n_n=n, the color sensor control device performs arithmetic processing to pass the test. A color order determination method for inspected objects with multiple colors.