JPH05126530A - Instrument for measuring and processing spraying area of liquid - Google Patents

Abstract

PURPOSE:To easily discriminate and measure the spraying area of a work spraying liquid by providing a means for taking the image of the sprayed state of the liquid on a board, means for designating the spraying position of the liquid based on a still picture taken by the above-mentioned means, and means for calculating the spraying position of the liquid. CONSTITUTION:While spraying washer liquids W1 and W2 are sprayed from washer nozzles 3 upon a transparent inspection board 4 the front surface of which can be seen from the rear side, images of the spraying points P1 and P2 of the liquid on the board 4 are taken with a CCD camera 5 from the rear side. An image processor 8 produces a still picture based on the picture signal of the camera 5. A computer 10 connected with the processor 8 calculates the positions of the points P1 and P2 and displays the contrastive relation between the calculated positions of the points P1 and P2 and the reference area of the nozzle 3 on the screen of a color monitor 9. Then the computer 10 discriminates whether or not the points P1 and P2 are within the reference area. Therefore, the inspection board 4 can be used commonly and, at the same time, the spraying area of the liquid can be easily discriminated and measured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a landing point measuring / processing device, and more particularly to a water landing point measuring / processing device for measuring and processing the position of a liquid jetted from a workpiece when the liquid lands on a board. Is.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 8, a hood 32 of a vehicle 31 is provided with a pair of washer nozzles 33.
The washer fluid W pressurized toward is jetted. As shown in FIGS. 9 (a) and 9 (b), a movable ball 35 having two holes 34a formed therein is disposed in the washer nozzle 33, and the washer liquid W is discharged from the two holes 34a of the movable ball 35. It is supposed to be jetted. Therefore, as shown in FIG.
From 3, the washer liquid W is injected in a state where it is branched into two. In addition, the movable ball 35 in the washer nozzle 33
By moving, the water contact point P with respect to the windshield 34 can be adjusted to an arbitrary position.

By the way, the design standard of the washer nozzle 33 differs depending on the vehicle type. The set position of the landing point P of the washer liquid W on the windshield 34 differs depending on the vehicle model.

Therefore, it is inspected whether the landing point P of the washer liquid W reaches a predetermined position on the wind glass 34 which is set in advance, and the washer nozzle 33 which has passed this inspection.
Only need to ship to production line. As shown in FIGS. 10 and 11, the inspection device for performing this inspection is composed of a base 37 for fixing the washer nozzle 33 and an inspection board 38 for landing the washer liquid W sprayed from the washer nozzle 33. ing. The inspection board 38 is removable from the inspection table 39, and a reference area 40 preset according to the vehicle type is provided. The reference area 40 is provided with the windshield 3 if the landing point P of the washer liquid W is located within the area 40.
It is set in advance so that water can be landed at a predetermined position of No. 4. The reference area 40 is formed in a rectangular shape with some allowances in the vertical and horizontal directions.

Then, the washer nozzle 33 according to the vehicle type is fixed to the base 37 of the inspection device, and the washer nozzle 3 is attached.
The washer liquid W is jetted from 3 to land on the facing inspection board 38. At this time, if the landing point P of the washer liquid W is located within the reference area 40 set in advance on the inspection board 38, it is determined to be acceptable, and if it is not within the reference area 40, it is determined to be unacceptable.

[0006]

However, since the landing point P on the windshield 34 differs depending on the vehicle type, the reference area 40 provided on the inspection board 38 also differs. Therefore, inspection board 3 tailored to the vehicle type
There is a problem that not only a large amount of 8 is required but also a space for storing the inspection board 38 becomes large. And
Every time the inspection of the washer nozzle 33 according to the vehicle type changes, it is necessary to take out the inspection board 38 according to the vehicle type from the storage location where it is stored and replace the inspection board 38. There is a problem of this.

Further, when the number of vehicles to be inspected is newly increased, the inspection board 38 has a reference area 40 on the plain inspection board 38.
It is necessary to work to set up. Therefore, the inspection board 3
There is a problem that it takes time to perform the purchase cost of 8 and the setting work of the reference area 40.

Further, whether or not the landing point P of the washer liquid W is within the reference area 40 is determined by visual judgment.
Since the washer liquid W lands on the inspection board 38 at a high speed to cause water splash, it is difficult to visually determine the position of the landing point P. Further, when trying to measure the position of the watering point P of each washer nozzle 33 on the inspection board 38, after the watering point P is determined as shown in FIG. 12, the origin of the inspection board 38 is determined by a scale. Coordinate points X1, Y1 from O and coordinate point X
2 and Y2 will be measured respectively. Therefore, the measurement of the landing point P for each washer nozzle 33 is very troublesome, and there is a problem that if the number of washer nozzles 33 measured is large, the measurement will take an enormous amount of time.

The present invention has been made to solve the above-mentioned problems, and its purpose is to make common the boards to be used for inspection, to eliminate the space for replacement setting work and storage, and to determine the landing point and An object of the present invention is to provide a landing point measurement processing device capable of easily measuring the landing point.

[0010]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention solves the above-mentioned problems. A work is jetted with a liquid, a board on which the liquid jetted from the work is landed, and the liquid is landed on the board. An image pickup means for picking up an image of the state in which the image is being displayed, an image processing means for creating a still image based on the image signal detected by the image pickup means, and a display means for displaying the still image created by the image processing means. A position designating unit for designating a liquid landing point on the board based on the still image displayed on the display unit; and a position computing unit for computing the position of the water landing point based on the position designating unit. Is the gist.

[0011]

[Function] The liquid sprayed from the work reaches the board,
The state is imaged by the imaging means. The image processing means creates a still image based on the image signal from the image pickup means and displays the still image on the display means. The position designating means designates the landing point of the liquid on the board based on the still image displayed on the display means. Then, the position calculation means calculates the position designated by the position designation means, that is, the position of the landing point.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is embodied in a landing point measuring device for measuring the landing point of a washer liquid ejected from a washer nozzle will be described with reference to FIGS.

As shown in FIG. 1, a base 2 is fixed to the inspection base 1, and a washer nozzle 3 as various works is detachably mounted on the upper surface of the base 2 according to the vehicle type. .. A square inspection board 4 is vertically erected and fixed on an inspection table 1 which is separated from the base 2 by a predetermined distance. The inspection board 4 is made of transparent glass or resin, and the other side of the inspection board 4 can be seen through. The washer liquids W1 and W2 as liquids are jetted from the washer nozzle 3 toward the inspection board 4 and land on the inspection board 4. At this time, the washer liquid W is applied to the inspection board 4.
Water contact points P1 and P2 of 1 and W2 are formed. Therefore, the landing points P1 and P2 of the washer liquids W1 and W2 can be visually recognized from the back side (right side in FIG. 1) of the inspection board 4.

Inspection table 1 on the back side of the inspection board 4
Includes a monochrome CCD camera (hereinafter, simply referred to as a camera) 5 as an image pickup unit so as to face the inspection board 4 side.
Is provided via a position adjusting mechanism 6 that can move vertically and horizontally. The entire inspection board 4 is imaged by the camera 5.

An A / D converter 7 is connected to the camera 5, and the A / D converter 7 converts an analog image signal captured by the camera 5 into a digital image signal. An image processing device 8 as an image processing means is connected to the A / D converter 7, and the digital image signal output from the A / D converter 7 is image-processed. A color monitor 9 as a display means is connected to the image processing device 8 to display a monochrome image subjected to image processing by the image processing device 8. That is, a monochrome image captured by the camera 5 is displayed via the A / D converter 7 and the image processing device 8. The image processing device 8 is also capable of creating a still image based on the image signal from the camera 5.

In this embodiment, since the color monitor 9 is smaller than the inspection board 4, the image of the inspection board 4 displayed on the screen of the color monitor 9 is displayed in a reduced state. Therefore, the position designated on the screen of the color monitor 9 is made to correspond to the position on the inspection board 4 by comparison.

A computer 10 as a position calculating means is connected to the image processing device 8. The computer 10 displays a cross-shaped cursor K on the screen of the color monitor 9 via the image processing device 8 or a landing point P of the washer liquids W1 and W2 on the inspection board 4.
The positions of 1 and P2 are calculated. Further, in a storage unit (not shown) of the computer 10, data of various reference areas S1 and S2 of the washer nozzle 3 with respect to the inspection board 4 according to the vehicle type is stored, and the reference areas S1 and S2 are compared based on this data. Is displayed on the screen of the color monitor 9.

The data of the reference areas S1 and S2 is composed of X-axis coordinate data and Y-axis coordinate data,
The reference areas S1 and S2 have a rectangular shape because the X-axis and Y-axis coordinate data have respective allowable ranges. Also, the computer 10 uses the reference areas S1 and S2.
Is displayed on the screen of the color monitor 9 as blue-colored reference areas S1 and S2, and the computer 10 places the landing point P of the washer liquids W1 and W2 in the reference areas S1 and S2.
It is adapted to determine whether the P1 and P2 are located.

A digitizer device 13 as a position designating means is connected to the computer 10, and the digitizer device 13 can move the cursor K displayed on the color monitor 9 to an arbitrary place. .. When the digitizer device 13 is operated, the image processing device 8 can create and convert an image displayed on the color monitor 9 at that time into a still image.

Further, after a still image is displayed on the screen of the color monitor 9, the cursor K is moved by operating the digitizer device 13, and the landing points P1 and P2 of the washer liquids W1 and W2 and the center positions of the cursor K are moved. And the position is designated by matching with, and the landing point P1,
The position of P2 can be designated.
When the positions of the landing points P1 and P2 are designated on the screen, the computer 10 determines whether the landing points P1 and P2 are located within the reference areas S1 and S2, and the reference area S
If the landing points P1 and P2 are not located in the areas S1 and S2, the reference areas S1 and S2, which are blue frame lines, are changed to red frames, and the landing points P1 are located in the reference areas S1 and S2. ，
When P2 is located, the reference area S with a blue frame
1 and S2 are changed to green frame lines.

The computer 11 has a keyboard 11
Are connected, and various kinds of data can be input and menus can be selected by the keyboard 11. Further, when the product number of the washer nozzle 3 matching the vehicle type is input with the keyboard 11, the computer 10 reads the data of the reference areas S1 and S2 of the washer nozzle 3 corresponding to the product number from the storage unit, and the reference is made based on the data. The areas S1 and S2 are displayed on the screen of the color monitor 9 via the image processing device 8.

The computer 10 uses the washer fluid W
The positions of the landing points P1 and P2 of 1 and W2 are calculated by the X and Y axis coordinate data. That is, as shown in FIG. 5, the cursor K is moved by operating the digitizer device 13 so that, for example, the landing point P1 on the screen of the color monitor 9 and the center of the cursor K coincide with each other. After that, when the position of the landing point P1 is specified by operating the digitizer device 13, the computer 10 obtains the coordinate points X1, Y1 of the landing point P1 with the origin O of the inspection board 4 as a reference, and the coordinates of the landing point P1. It is supposed to be data.

Then, the computer 1 determines whether the coordinate data indicating the positions of the landing points P1 and P2 obtained by the computer 10 are located in the reference areas S1 and S2.
0 judges. Further, the computer 10 determines that the landing points P1 and P
The coordinate data indicating the position 2 and the inspection result thereof can be stored, and these data can be stored in a floppy disk or the like.

The computer 10 has a display 1
2 are connected, and as shown in FIG. 7, washer fluid W1, W
The X and Y coordinate data indicating the positions of the two landing points P1 and P2 and the inspection result of the washer nozzle 3 can be displayed. Further, as shown in FIG. 1, a video printer 14 is connected to the image processing apparatus 8 and the image picked up at that time is printed by operating the video printer 14.

Next, the operation of the water landing point measurement processing device configured as described above will be described. First, as shown in FIG. 2, mount the washer nozzle 3 to be inspected on the base 2,
When the camera 5, the image processing device 8 and the computer 10 are operated, the camera 5 images the inspection board 4. Therefore, the image processing device 8 displays a monochrome image on the screen of the color monitor 9 based on the image signal of the camera 5. Further, as shown in FIG. 3, the computer 10 displays the cursor K on the screen of the color monitor 9 via the image processing device 8. Then, when the product number of the washer nozzle 3 to be inspected is input by the keyboard 11, the computer 10 reads out the reference areas S1 and S2 corresponding to the product number from the storage unit, and the reference areas S1 and S2 are displayed on the color monitor with a blue frame. 9 is displayed on the screen.

Then, as shown in FIG. 4, when the washer liquids W1 and W2 are jetted from the washer nozzle 3, the washer liquids W1 and W2 land on the inspection board 4. At this time, the landing points P1 and P2 of the washer liquids W1 and W2 are formed on the inspection board 4. The camera 5 takes an image of this state, and the image signal is output to the image processing device 8 via the A / D converter 7. The image processing device 8 displays a monochrome image on the display screen of the color monitor 9 based on the image signal from the camera 5. After that, digitizer device 1
When 3 is operated, the image processing device 8 via the computer 10 changes the image displayed on the color monitor 9 at that time to a still image.

Then, as shown in FIG. 5, by operating the digitizer device 13, the center of the cursor K on the screen of the color monitor 9 is moved to coincide with the landing points P1 and P2. Specify each position. Then, the computer 10 causes the coordinate points X1 and Y1 of the landing point P1 and the coordinate point X of the landing point P2 based on the origin O of the inspection board 4 based on the designated position on the screen of the color monitor 9.
2 and Y2 are obtained and used as coordinate data indicating the positions of the landing points P1 and P2.

In this case, since the coordinate data indicating the positions of the landing points P1 and P2 are located in the reference areas S1 and S2,
The computer 10 determines that the washer nozzle 3 has passed. Based on this, the computer 10 changes the reference areas S1 and S2 displayed on the screen of the color monitor 9 by the blue frame line to the green frame line through the image processing device 8 to notify that it is a pass. .. The above coordinate data and the judgment result are displayed on the display 12 as shown in FIG.
Is displayed on the screen and is stored in the storage unit of the computer 10.

Next, the washer nozzle 3 is replaced and the same operation as above is performed, and a still image is displayed on the display screen of the color monitor 9 by operating the digitizer device 13. In this state, as shown in FIG.
The cursor K on the screen of the color monitor 9 is moved by and the cursor K and the landing points P1 and P2 are made to coincide with each other, and then the positions of the landing points P1 and P2 are designated. Then, the computer 10 causes the landing point P1 based on the origin O of the inspection board 4 based on the designated position on the screen of the color monitor 9.
Coordinate points X3, Y3 and the landing point P2 coordinate points X4, Y4
Is set as coordinate data indicating the positions of the landing points P1 and P2.

In this case, the computer 10 determines that the landing point P
The coordinate data indicating the positions of P1 and P2 are the reference areas S1 and S.
Since it is not located within 2, the computer 10 determines that the washer nozzle 3 has failed. Based on this
The computer 10 uses the image processing device 8 to display the reference area S displayed on the screen of the color monitor 9 in a green frame.
1 and S2 are changed to a red frame to notify the failure.

When the inspection of a predetermined number of washer nozzles 3 is completed by the above procedure, the coordinate data of each washer nozzle 3 and the inspection result are displayed on the display 12, as shown in FIG. The computer 10 stores the coordinate data and the inspection result of each washer nozzle 3 in a floppy disk or the like based on the operation of the keyboard 11.

Therefore, if the product number of the washer nozzle 3 to be inspected is entered from the keyboard 11, the computer 1
0 displays the reference areas S1 and S2 corresponding to the product number on the screen of the color monitor 9, and determines whether the landing points P1 and P2 of the washer liquids W1 and W2 are located in the reference areas S1 and S2. To do. As a result, since the inspection board 4 can be shared, it is not necessary to replace the inspection board 4 each time the product number (type) of the washer nozzle 3 changes, and the replacement setting time of the inspection board 4 can be eliminated. it can. Further, a space for storing the inspection board 4 can be eliminated, and it is not necessary to search for the inspection board 4 according to the vehicle type.

Further, since the reference area 40 is not provided on the inspection board 4, it is not necessary to prepare the inspection board 4. Therefore, the working time and the purchase cost of the inspection board 4 can be reduced.

Further, since the positions of the landing points P1 and P2 of the washer liquids W1 and W2 are designated based on the still image displayed on the screen of the color monitor 9, the position designation accuracy can be improved. When the positions of the landing points P1 and P2 are designated, the computer 10 sets the reference areas S1 and S2.
It is determined whether the landing points P1 and P2 are located within 2. Based on this result, the computer 10 determines the reference areas S1 and S2.
In order to notify by changing the color of the frame line indicating, the operator who performs the inspection may check whether or not the washer nozzle 3 has passed based on this color change. As a result, the operator visually determines whether the landing points P1 and P2 formed by landing on the inspection board 4 at high speed are located within the reference areas S1 and S2, and the pass / fail judgment of the washer nozzle 3 is performed. You can eliminate the need to do.

Further, the computer 10 makes the landing points P1 and P2
Since the coordinate points X1 to Xn and Y1 to Yn are calculated, it is not necessary for the operator to measure the positions of the water landing points P1 and P2, and the water landing points P1 and P2 can be easily managed by the coordinate data. it can. Then, a data management table such as a histogram can be created based on the stored coordinate data.

In this embodiment, the back side of the inspection board 4 was imaged by the camera 5. However, if the landing points P1 and P2 can be confirmed from the setting side of the washer nozzle 3, the inspection board 4 on the washer nozzle 3 side is imaged. Landing point P1, P
The position 2 may be measured.

Conventionally, the state in which the washer liquids W1 and W2 land on the inspection board 4 was photographed with a polaroid camera or the like, but since the splashes are reflected by the flash, the landing points P1 and P2 should be photographed. Was difficult. However, in this embodiment, the landing point P of the washer liquids W1 and W2 on the inspection board 4 is determined by the video printer 14.
1 and P2 can be printed clearly.

In this embodiment, the washer nozzle 3
The positions of the landing points P1 and P2 of the washer liquids W1 and W2 in the above were measured, but it is also possible to use it as a measurement processing device for other parts.

Although the digitizer device 13 is used as the position designating means in this embodiment, the cursor K may be moved by other means such as a mouse or a key to reach the landing points P1 and P2.
May be specified.

[0040]

As described above in detail, according to the present invention, the board used for inspection can be made common to eliminate the space for the replacement setting work and the storage, and the determination of the landing point and the landing point can be performed. There is an excellent effect that the measurement can be easily performed.

[Brief description of drawings]

FIG. 1 is an electrical block diagram showing the configuration of a water landing point measurement processing device according to the present invention.

FIG. 2 is an explanatory diagram showing that the state of the inspection board imaged by the camera is displayed on the screen of the color monitor.

FIG. 3 is an explanatory diagram showing that a cursor and a reference area are provided on a screen of a color monitor by a computer.

FIG. 4 is an explanatory diagram for explaining that the camera images the state where the washer liquid landing point is formed on the inspection board and displays it on the screen of the color monitor.

FIG. 5 is an explanatory diagram for explaining calculation of coordinate points of the landing point on the inspection board when the landing point is designated on the screen of the color monitor by the cursor.

FIG. 6 is an explanatory diagram illustrating calculation of coordinate points of the landing point on the inspection board when the landing point is designated on the screen of the color monitor by the cursor.

FIG. 7 is an explanatory diagram showing coordinate data and inspection results displayed on the display.

FIG. 8 is an explanatory diagram illustrating that a washer liquid is ejected toward a wind glass from a washer nozzle provided on a bonnet.

9A is a side view of the washer nozzle, FIG.
(B) is a front view of the washer nozzle.

FIG. 10 is a side view showing a conventional inspection device.

FIG. 11 is a front view showing whether the landing point is located in the reference area by the conventional inspection device.

FIG. 12 is an explanatory diagram for explaining how to obtain the position of the landing point.

[Explanation of Codes] 3 ... Washer nozzle as work, 4 ... Inspection board, 5 ... Camera as image pickup means, 8 ... Image processing device as image processing means, 9 ... Color monitor as display means, 10 ... Position calculation Computer as a means, 13
... Digitizer device as position specifying means, P1, P2 ...
Landing point, W1, W2 ... Washer liquid as liquid

Claims (1)

[Claims] 1. A work to which a liquid is jetted, a board on which the liquid jetted from the work is landed, an image pickup means for picking up an image of a state where the liquid is landed on the board, and detection by the image pickup means Image processing means for creating a still image based on the generated image signal, display means for displaying the still image created by the image processing means, and a board for the board based on the still image displayed on the display means. A landing point measurement processing device comprising: a position designating means for designating a liquid landing point; and a position computing means for computing a position of the water landing point based on the position designating means.