JPS63225155A - Laver examination apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a seaweed inspection device that processes images obtained by imaging seaweed to determine the quality of the seaweed.

(Prior Art) Seaweed, which is made by cutting red and green algae like paper and then drying them, has conventionally been manually inspected for quality.

However, with such an inspection method, it is not possible to improve inspection accuracy or inspection speed, so seaweed inspection devices that automatically perform this inspection have been developed and are in use.

This seaweed inspection device includes a transport unit that transports the seaweed, a line sensor that images the seaweed being transported by the transport unit, and processes the output of this line sensor to detect the width of the seaweed and the presence or absence of horizontal cracks. It is equipped with a processing section that displays the detection results of this processing section, and a display section that detects when the seaweed is not wide enough or cracks horizontally. Display above.

(Problems to be solved by the invention) By the way, in such a conventional seaweed inspection device,
When the seaweed is cracked horizontally, it can be detected, but when the seaweed is cracked vertically, it cannot be detected.

In view of the above circumstances, it is an object of the present invention to provide a seaweed inspection device that can detect vertical cracks in seaweed.

(Means for Solving the Problems) In order to solve the above problems, a seaweed inspection device according to the present invention provides a seaweed inspection vt that processes an image obtained by imaging seaweed to determine the quality of the seaweed. In the installation, there is an imaging unit that images the seaweed, a division unit that divides the bit data into a plurality of bit data groups each time horizontal bit data is obtained by this imaging unit, and a division unit that divides the bit data into a plurality of bit data groups. A counter provided for each bit data group and detecting whether there is a hole bit in each bit part group output from the dividing section, incrementing the counter corresponding to the bit data group with the hole bit, and The invention is characterized in that it includes a hole bit detection section that clears the counters, and a vertical hole detection section that detects the presence or absence of a vertical hole based on the values of each of the counters.

(Embodiment) FIG. 1 is a block diagram showing an embodiment of a seaweed inspection device according to the present invention.

The seaweed inspection device shown in this figure is equipped with a conveying section 1, an imaging section 2, a processing section 3, and a switching section 4, and when nori 5 is inserted, an image thereof is displayed while conveying it. At the same time, based on this image, it is inspected whether there are any vertical holes in the seaweed 5. Then, if there is no vertical hole, it is put into the good product stock section 6, and if there is a vertical hole, it is put into the defective product stock section 7.

The conveyance unit 1 includes a plurality of driving pulleys 8, a plurality of driven pulleys 9 corresponding to each of these driving pulleys 8, and belts 10 stretched between each of these driving pulleys 8 and driven pulleys 9. When the seaweed 5 is inserted from the introduction end side, it is transported along the transport surface in the six directions of arrows. In this case, as shown in FIG. 2, behind each pulley 8.9 on the introduction end side of the conveying section 1, the lower driven pulley 9 on the image section 2 side is formed to be thicker on the center side. Correspondingly, the upper driven pulley 9 is formed to be narrower at the center. As a result, when there is a vertical hole in the seaweed 5, the left and right edges of this vertical hole are shifted so that the vertical hole can be easily detected in [1 section 2].

Further, the 81 section 2 includes a lamp 11 that illuminates the seaweed 5 being transported by the transport section 1 from below, and a lamp 11 that illuminates the seaweed 5 being transported by the transport section 1 from below.
Nori 5 illuminated by v111m from above! A serial image obtained by illuminating the seaweed 5 is supplied to the processing section 3.

The processing unit 3 includes a serial/parallel conversion circuit (S/P) that converts the serial image into a parallel image (image data).
a conversion circuit) 13, and a determination circuit 14 that sequentially processes the image data obtained by the S/P conversion circuit 13 to determine whether or not there is a vertical hole in the seaweed 5. If there is a vertical hole, a solenoid ON signal is generated and supplied to the switching section 4.

In this case, the determination circuit 14 includes a control unit (CPU>15) consisting of a microprocessor, etc., and a ROM (ROM) in which programs for the CPU 15, various constant data, etc. are stored.
read-only memory) 16, and <n as shown in FIG.
A RAM (Random Access Memory) 17 having a counter area used as flA counters 25a to 25n, a display unit 18 that displays processing results of the CPU 15, and the CPU 15, the switching unit 4, and the transport unit 1. It is equipped with an interface 19 for connecting the RO
CPU1 based on the program stored in M16
5 sequentially processes the image data to determine whether there is a vertical hole in the seaweed 5.

The switching unit 4 also includes a flapper 20 provided on the rear side of the conveyance unit 1 and a solenoid 21 that drives the flapper 20. When the solenoid ON signal is not supplied from the processing unit 3, the flapper The tip of the nori 20 is below the conveying surface of the conveying section 1 to guide the seaweed 5 to the good product stocking section 6, and when the solenoid ON signal is supplied, the solenoid 21 is turned on to drive the flapper 20, and this The tip of the flapper 20 is made to protrude above the conveyance surface to guide the seaweed 5 to the defective product stock section 7.

Next, the operation of this embodiment will be explained with reference to the flowchart shown in FIG.

First, when the power switch of this seaweed inspection device is turned on, the CPU 15 starts operating, initializes each circuit part, turns on the conveyance section 1, and then in step ST1, the S/P conversion circuit 13 The obtained image data are sequentially captured and the process waits until the edges of the seaweed 5 are detected.

When the edge of seaweed 5 is detected, the CPU 15
Branches from this step ST1 to step ST2, where the image data obtained by the S/P conversion circuit 13 is sequentially processed.
and store it in the RAM 17.

Next, in step ST3, the CPU 15 sequentially reads out the image data stored in the RAM 17 and inspects the presence or absence of nori bits (bits with a value of "1"), and then, based on the inspection results, reads the image data stored in the RAM 17 as shown in FIG. The start edge ST, end edge ED, left edge EL, and right edge ER of Nori 5 are dedicated.

In this case, the start edge ST and the end edge ED
is set a little closer to the center than the front and rear edges of the seaweed 5.

Next, the CPU 15 selects each edge ST, ED, and the image data stored in the RAM 17 in step ST4.
After reading 1 byte of the first data on the 1st line of the part surrounded by ELSER, in step ST5 it is determined whether there is a hole bit (a bit with a value of "O") in this 1 byte of image data. Check if.

In this case, if there is a hole 23 on the left side of the seaweed 5 as shown in FIG. 5, there is a corresponding hole bit in this 1-byte image data as shown in FIG.
5 branches from this step ST5 to step ST6,
As shown in FIG. 6(B), the counter (in this case, counter 25a) corresponding to this 1 byte of image data is set to the value "
Increment by 1″.

After this, the CPU 15 sets this counter 2 in step ST7.
It is checked whether the value of counter 5a exceeds a set value (vertical hole detection judgment value), and if the value of this counter 25a does not exceed the set value, steps from step ST7 to step S
The process branches to T8, where it is checked whether this address contains the right edge ER and whether this line contains the end edge ED.

In this case, this address is not an address that includes the right edge ER,
Since this line is not a line including the end edge ED, the CPU 15 returns from step ST8 to step ST4, reads out one byte of data stored at the address next to the above-mentioned address, and performs the same processing.

In this case, as shown in FIG. 6(A), since there is no hole bit in this 1-byte image data, the CPIJ 15 branches from step ST5 to step ST9, where the counter (this In this case, after clearing the counter 25b), the process returns to step ST4 via step ST8, and the above-described process is executed on the next image data.

When the processing for the data at the address including the right edge ER of this line is completed, the CPU 5 executes the above-described processing for the next line surrounded by the edges ST, ED, EL, and ER.

In this case, 1.2 of this line as shown in Figure 6(C)
If there is a hole bit in the image data of the byte, CPU1
5 increments the counter 25a125b by the value 111II as shown in FIG. 6(D).

Next, when the processing for this line is completed, CP
I15 executes the above-described processing for the next line of the portion surrounded by each edge ST, ED, EL, and ER.

As shown in FIG. 6(E), if there is no hole bit in the 1.2 byte image data of this line, the CPU 1
5 is a counter 25a as shown in FIG. 6 (F-);
Clear 25b.

Hereafter, the same processing is applied to the remaining image data, and each time a hole bit is found in 1 byte data, the value of the counter corresponding to this 1 byte data is incremented, and a hole bit is also found in 1 byte data. When the 1-byte data disappears, the counter corresponding to this 1-byte data is cleared.

Then, when processing 1 byte of image data at the final position of the line including the end edge ED, the CPU 15
will run this loop out of sequence.

As a result, the nori 5 that has been inspected is transported by the transport section 1 and stocked in the non-defective product stock section 6.

Further, in step ST7, the counters 25a to 2
If it is determined that any value of 5n exceeds the vertical hole detection judgment value, the CPU 15 branches from step ST7 to step 5T10, and generates a solenoid ON signal to direct the tip of the flapper 20 to the conveyance surface. protrude upwards,
The seaweed 5 is guided to the defective product stock section 7.

In this embodiment, the values of each of the counters 25a to 25n are incremented each time a hole bit is found, and the length of the vertical hole is stored in each of these counters 25a to 25n. 25a
By simply checking the value of ~25n, it is possible to detect any vertical hole that exceeds a predetermined length.

Further, in the above embodiment, the image data stored in the RAM 17 is read out in the horizontal direction, but the same effect as in the above embodiment can be obtained even if the image data is read out in the vertical direction. .

(Effects of the Invention) As explained above, according to the present invention, even when seaweed is vertically cracked, this can be detected.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the seaweed inspection device according to the present invention, FIG. 2 is a front view showing a part of the conveyance section in the same embodiment, and FIG. 3 is a schematic diagram showing an example of a memory map in the same embodiment. 4 is a flowchart showing an example of the operation of the same embodiment, FIG. 5 is a schematic diagram for explaining an example of image data processing of the same embodiment, and FIGS. FIG. 3 is a schematic diagram for explaining an example of detecting a vertical hole in the example. 2... Imaging unit, 5... Seaweed, 15... Dividing unit, vertical hole detection unit, hole bit detection unit (CPU), 18... Counter (RAM). Agent Patent attorney Tetsuji Iwakura (and 1 other person) Figure 2 Figure 3 Factor 5 Figure 4 Figure 6m

Claims (1)

[Claims] A seaweed inspection device that processes an image obtained by imaging seaweed to determine the quality of the seaweed includes an imaging section that photographs the seaweed, and each time bit data in the horizontal direction is obtained by the imaging section, A dividing unit that divides this bit data into a plurality of bit data groups, a counter provided for each bit data group obtained by the dividing unit, and a hole in each bit part group output from the dividing unit. A hole bit detection unit that detects whether or not there is a bit, increments a counter corresponding to a bit data group with a hole bit, and clears other counters, and detects the presence or absence of a vertical hole based on the values of each of the counters. A seaweed inspection device characterized by comprising a vertical hole detection section.