JP7093604B2 - Target core sensor device - Google Patents

Description

An embodiment of the present invention relates to a target core sensor device installed in a mobile machine that automatically travels in a coke oven.

The coke oven is automated for moving and aligning the moving machine to the working position and for each furnace operation. Therefore, the mobile device is equipped with a target core sensor device for detecting a target provided at each work position. This target core sensor device has a light source that irradiates the target with light and an image pickup device that captures the image of the target irradiated with the light. The image pickup apparatus detects the light / dark information of the target and transmits the image data to the control unit. Then, the control unit can stop the mobile device at each work position by specifying the work position from the light / dark information of the image data sent from the image pickup device.

Here, coal and coke dust are scattered around the coke oven equipment, and a large amount of water vapor and gas are also present, which hinders the imaging of the target. Therefore, we propose a target core sensor device equipped with an air discharge means that simply seals the visual field space of the image pickup device with an air curtain and an air blowing means that blows air so as to keep the simple sealed visual field space at a positive pressure. Has been done. Further, for example, a target core sensor device for removing dust and the like adhering to the glass surface by blowing air toward the glass surface of the light source has also been proposed.

Japanese Unexamined Patent Publication No. 6-248271 Japanese Unexamined Patent Publication No. 2017-105876

In the target core sensor device provided with the above-mentioned air discharging means and air blowing means, since the target passes between the light source and the image pickup device, the opening for passing the target is widened. Therefore, in order to prevent dust and the like from entering the visual field space of the image pickup apparatus, a large amount of air must be sent to form an air curtain, which may increase the cost. Further, if the amount of air sent is insufficient, there is a possibility that the simple sealed state of the visual field space cannot be maintained. Further, if the wind speed of the wind forming the air curtain becomes non-uniform, there is a risk that surrounding dust or the like may be caught in the visual field space.

On the other hand, the target core sensor device that blows air toward the glass surface of the light source described above discharges air from above the glass surface of the light source exposed to the outside. In this case, at a position away from the discharge portion that discharges air to the glass surface, dust or water vapor may be caught in the turbulent air vortex. As a result, air containing water vapor, dust, and the like may be blown onto the glass surface, and dirt may adhere to the glass surface. Further, since air is blown to the glass surface, there is a possibility that dust and the like adhering to the target cannot be blown off.

The embodiment of the present invention has been made to solve the above-mentioned problems, and it is a target that the life of the light source and the image pickup device can be improved by suppressing the adhesion of dust and water vapor to the light source and the image pickup device. It is an object of the present invention to provide a core sensor device.

The target core sensor device according to the embodiment is provided in a mobile machine moving in a coke oven, and detects a target provided corresponding to each working position of the mobile machine. Then, the light source that irradiates the light, the image pickup device that is provided facing the light source and detects the light emitted from the light source, and the light source is located between the light source and the target and passes through the light from the light source. The target is located between the first partition plate having a first discharge port for discharging air to the target, the image pickup device, and the target, and the light from the light source is passed through the target. A second partition plate having a second discharge port for discharging air is provided, and the second discharge port extends in the moving direction of the mobile device.

In the present embodiment, it is possible to suppress the adhesion of dust and water vapor to the light source and the image pickup device, and to improve the life of the light source and the image pickup device.

It is a front view which shows typically the coke oven. It is a perspective view which shows typically the heat storage chamber and a kiln of a coke oven. It is a front view which shows the target by itself. It is a block diagram exemplifying a working position detection device. It is a perspective view which shows typically the target core sensor device. It is a top view of the target core sensor device. FIG. 6 is a cross-sectional view of the target core sensor device in FIG. 6 as viewed from the direction of arrow AA. FIG. 3 is an enlarged cross-sectional view showing a target, a first casing, and a second discharge port in FIG. 7. 6 is a cross-sectional view of the target core sensor device in FIG. 6 as viewed from the direction of arrow BB. FIG. 6 is a cross-sectional view of the target core sensor device in FIG. 6 as viewed from the direction of arrows CC. 6 is a cross-sectional view of the target core sensor device in FIG. 6 as viewed from the direction DD.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
It should be noted that the drawings are schematic or conceptual, and the relationship between the thickness and width of each part, the ratio of the sizes between the parts, and the like are not necessarily the same as the actual ones. Further, even when the same part is represented, the dimensions and ratios may be different from each other depending on the drawing.
In addition, in the present specification and each figure, the same elements as those described above with respect to the above-mentioned figures are designated by the same reference numerals, and detailed description thereof will be omitted as appropriate.

FIG. 1 is a front view schematically showing a coke oven.
FIG. 2 is a perspective view schematically showing a heat storage chamber and a kiln of a coke oven.
1 and 2 show, as an example, a case where the target 9 is provided at a position corresponding to each kiln 3 and the target core sensor device 20 is mounted on the extruder 5.

The coke oven 1 is provided in a steel mill together with, for example, a blast furnace (not shown). The coke oven 1 produces coke by carbonizing coal as a raw material. For this purpose, the coke oven 1 includes a heat storage chamber 2, a kiln 3 provided above the heat storage chamber 2 and having a plurality of carbonization chambers 3a, and a coal loading wheel 4 movable on each carbonization chamber 3a of the kiln 3. The extruder 5 facing the carbonization chamber 3a and movable along the heat storage chamber 2 and the extruder 5 are located on opposite sides of the kiln 3 and can move on the heat storage chamber 2 along the kiln 3. It includes a guide vehicle 6 and a fire extinguishing train 7 that is located below the guide vehicle 6 and can move along the heat storage chamber 2.

In the coke oven 1, a series of operations such as coal loading operation and coke extrusion operation are automated by a mobile device such as a coal loading vehicle 4, an extruder 5, and a guide vehicle 6. Specifically, the coal loading vehicle 4 automatically travels on the rail 8a provided above the kiln 3 to charge coal into the carbonization chamber 3a. The extruder 5 automatically travels on the rail 8b extending along the heat storage chamber 2 and extrudes the coke after carbonization from the carbonization chamber 3a toward the guide wheel 6. The guide vehicle 6 automatically travels on the rail 8c extending along the kiln 3 on the heat storage chamber 2 and guides the red hot coke extruded by the extruder 5 to the fire extinguishing train 7. The fire extinguishing train 7 automatically travels on the rail 8d, which is located on the opposite side of the heat storage chamber 2 from the rail 8a and extends along the heat storage chamber 2, to cool the red hot coke sent from the guide vehicle 6. do.

FIG. 3 is a schematic diagram illustrating the target.
The target 9 is provided at each working position of the mobile device. As shown in FIG. 2, the target 9 is provided so as to project from each carbonization chamber 3a of the kiln 3 toward the extruder 5 side, for example. These targets 9 are identification bodies for aligning the working positions of the mobile devices. Each target 9 is imaged by the image pickup device 35 of the target core sensor device 20 described later mounted on the mobile device. Each target 9 is made of, for example, a rectangular plate, and has an opening 9c that penetrates from the front surface portion 9a facing the image pickup apparatus 35 toward the back surface portion 9b facing the light source 30.

The opening 9c of the target 9 represents a target number set for each target 9. That is, the opening 9c (target number) of the target 9 is identification information for identifying each working position (for example, each carbonization chamber 3a) of the mobile device. The opening 9c has, for example, a plurality of slits penetrating in the thickness direction of the target 9, and positions and numbers are assigned according to each working position.

The opening 9c is opened in, for example, 7 places, where the place where the opening 9c is formed is "1", and the place where the opening 9c is not formed is "0", and the binary numbers are "0000001" to "0000001" to "0". It can be expressed as "11111111". It is sufficient that the target number (working position) of the opening 9c can be specified by using at least one of its shape, position and number. The opening 9c may be represented by, for example, a decimal number (Arabic numeral) or a hexadecimal number (alphanumerical character), or may have another shape or character (katakana or the like).

Next, the working position detecting device 10 according to the present embodiment will be described.
FIG. 4 is a block diagram of the working position detecting device.

The work position detection device 10 is provided on the mobile machine that moves the coke oven 1, and detects the target 9 provided corresponding to each work position of the mobile machine. The working position detection device 10 has a target core sensor device 20. The target core sensor device 20 includes a box body 40 mounted on a mobile device (for example, an extruder 5), a light source 30 provided inside the box body 40 to irradiate the target 9, and the inside of the box body 40. It has an image pickup device 35, which is provided in the above and captures an image of the target 9. Further, the working position detecting device 10 has an image processing unit 11 connected to the image pickup device 35 and a control unit 12 connected to the image processing unit 11. The image processing unit 11 and the control unit 12 may be provided in the target core sensor device 20.

The image processing unit 11 processes the light / dark information of the target 9 detected by the image pickup apparatus 35 as two-dimensional image data. The image processing unit 11 is realized by a device such as a CPU (Central Processing Unit) that sequentially reads and executes a program stored in a memory. Further, in the present embodiment, the image processing unit 11 and the control unit 12 are separately configured, but the present invention is not limited to this, and the image processing unit 11 may include a part or all of the functions of the control unit 12. good.

The image processing unit 11 stores the image data sent from the image pickup apparatus 35 in the memory 11a, the target reference 11b in which the reference data of each target 9 is stored, and the image data and the target reference stored in the memory 11a. It has a target calculation unit 11c for detecting the position and the target number of the target 9 by comparing with the reference data obtained.

The target calculation unit 11c detects, for example, the amount of deviation from the center of the visual field of the image pickup apparatus 35 to the target 9 and the target number based on the light / dark information of the image data. The target calculation unit 11c transmits information on the position of the target 9 and the target number to the control unit 12.

The control unit 12 is composed of, for example, a programmable controller (PLC), determines the current position of the mobile device based on the information transmitted from the target calculation unit 11c, and moves the mobile device to a predetermined working position.

Next, the target core sensor device 20 according to the present embodiment will be described.
FIG. 5 is a perspective view schematically showing the target core sensor device.
FIG. 6 is a plan view of the target core sensor device as viewed from above. FIG. 6 shows a state in which the air F1 and F2 circulating inside the box body 40 and the field of view range 35a of the image pickup apparatus 35 are transmitted.
FIG. 7 is a cross-sectional view of the target core sensor device in FIG. 6 as viewed from the direction of arrow AA.
FIG. 8 is an enlarged cross-sectional view showing the target, the first casing, and the second discharge port in FIG. 7.
FIG. 9 is a cross-sectional view of the target core sensor device in FIG. 6 as viewed from the arrow BB direction.
FIG. 10 is a cross-sectional view of the target core sensor device in FIG. 6 as viewed from the direction of arrows CC.
FIG. 11 is a cross-sectional view of the target core sensor device in FIG. 6 as viewed from the direction DD.

The target core sensor device 20 is mounted on a mobile device such as a coal loading vehicle 4, an extruder 5, and a guide vehicle 6. The target core sensor device 20 detects a target 9 provided at each work position in order to stop the mobile device at a predetermined work position. The target core sensor device 20 has a light source 30 that irradiates the target 9 with light, an image pickup device 35 that images the target 9, and a box body 40 that houses the light source 30 and the image pickup device 35. ..

The light source 30 is housed inside the first casing 41 of the box body 40. The light source 30 is, for example, a light emitting diode (LED) or a fluorescent lamp, and is lit when the coke oven 1 is in operation. The light source 30 is arranged with the light emitting surface 30a facing the image pickup apparatus 35 side. The light source 30 illuminates the back surface portion 9b of the target 9 when the target 9 is located inside the box body 40.

The image pickup apparatus 35 is housed inside the second casing 50 of the box body 40. The image pickup device 35 is composed of, for example, a line sensor camera or an area sensor camera, and is activated when the coke oven 1 is in operation. The image pickup apparatus 35 is provided facing the light source 30 and detects the light emitted from the light source 30. The image pickup apparatus 35 captures a direction intersecting the moving (traveling) direction of the mobile device. In the image pickup apparatus 35, for example, the axis XX of the optical axis extends along the horizontal plane toward the light source 30.

Further, the image pickup apparatus 35 has a viewing range 35a that is at least longer than the length dimension in the left-right direction of the target 9. As a result, the image pickup apparatus 35 can take an image of the target 9 passing between the light source 30 and the light source 30 within the visual field range 35a. In this case, the light emitted from the light source 30 passes through the opening 9c of the target 9 and is blocked at a portion other than the opening 9c. Therefore, the image pickup apparatus 35 detects the light / dark information composed of the opening 9c of the target 9 and the other portions. Then, the image pickup apparatus 35 transmits the captured image data (brightness / dark information) to the image processing unit 11.

Next, the box body 40 that houses the light source 30 and the image pickup device 35 will be described.

As shown in FIGS. 5 and 6, the box body 40 is formed in a concave shape with a part of the lower side and the left and right sides opened, for example, by a metal material. The box body 40 is between the first casing 41 in which the light source 30 is housed, the second casing 50 in which the image pickup apparatus 35 is housed, and the upper end of the first casing 41 and the upper end of the second casing 50. It has a hood plate 60 and a hood plate 60 for connecting to.

In this case, the box body 40 is attached to the mobile device in a state where the first casing 41 projects from the mobile device toward the target 9 side. That is, the box body 40 is attached to the mobile device on the side of the second casing 50. The target 9 passes through the target passing portion 65 formed below the hood plate 60 between the first casing 41 and the second casing 50. In the description of the box body 40, the side of the first casing 41 is the front side (front), and the side of the second casing 50 is the rear side (rear).

The first casing 41 is formed in a box shape extending in the moving direction of the moving machine by the upper surface plate 41a, the lower surface plate 41b, the left and right side surface plates 41c, the front surface plate 41d, and the first partition plate 41e facing the front surface plate 41d. ing. The first casing 41 has a light-shielding property and an airtightness. As a result, the first casing 41 suppresses the intrusion of sunlight, external light such as surrounding electric lamps, dust, and water vapor into the casing 41.

The upper surface plate 41a of the first casing 41 closes above the light source 30 and its rear end is connected to the hood plate 60. The bottom plate 41b closes the lower part of the light source 30 and supports the light source 30 via a fixing bracket 42 provided apart from each other in the left-right direction. The left and right side plates 41c block both the left and right sides of the light source 30. At least one side plate 41c of the left and right side plates 41c of the first casing 41 has a first pipeline 46 that supplies air F1 to the light source 30. The front plate 41d connects between the front end of the upper surface plate 41a and the front end of the lower surface plate 41b to block the front of the light source 30.

The first partition plate 41e is located between the light source 30 and the target 9 (target passing portion 65) and faces the front plate 41d in the front-rear direction. The first partition plate 41e has a first discharge port 43 for passing the light of the light source 30 and discharging air F1 to the target 9. The first discharge port 43 communicates between the inside of the first casing 41 and the target passing portion 65.

The first discharge port 43 is formed in a slit shape extending in the moving direction (left-right direction) of the moving device at a position facing the light emitting surface 30a of the light source 30. In this case, the first discharge port 43 is formed at a position having a predetermined dimension toward the rear from the light emitting surface 30a of the light source 30. In other words, the light emitting surface 30a of the light source 30 is arranged inside the first casing 41.

The size of the first discharge port 43 is formed so that the light emitted from the light source 30 can irradiate the target 9, and the air F1 can blow off foreign substances such as dust adhering to the target 9. .. That is, the inside of the first casing 41 has a positive pressure more than the outside due to the supply of air F1 from the first pipeline 46.

As a result, since the air F1 is vigorously ejected from the first discharge port 43 toward the target passing portion 65, it is possible to suppress foreign matter such as dust from entering the inside of the first casing 41. .. Therefore, it is possible to prevent foreign matter such as dust from adhering to the light emitting surface 30a of the light source 30. Further, the air F1 discharged from the first discharge port 43 is blown onto the back surface portion 9b of the target 9, and foreign matter such as dust adhering to the target 9 can be blown off.

The horizontal plate 44 extends in the left-right direction inside the first casing 41. The horizontal plate 44 is located above the light source 30, and its base end side is fixed to the first partition plate 41e and extends toward the front plate 41d side. In this case, a gap S is formed between the horizontal plate 44 and the front plate 41d. That is, the horizontal plate 44 has a fixed end on the first partition plate 41e side and a free end on the front end side (front plate 41d side).

The gap S is a flow path through which the air F1 supplied from the first pipeline 46 flows, and is formed in front of the light source 30 (on the front plate 41d side). As a result, the air F1 flowing out of the first pipeline 46 flows from the gap S to the first discharge port 43 through the light source 30. The horizontal plate 44 may extend from the first partition plate 41e to the front plate 41d, and in such a case, one or a plurality of openings as gaps S are formed in the horizontal plate 44.

Fixing metal fittings 45 are provided on the upper surface of the horizontal plate 44 so as to be separated from each other in the left-right direction. The fixing bracket 45 supports the downstream pipeline 48 of the first pipeline 46. The fixing bracket 45 is not limited to the horizontal plate 44, but may be provided on the upper surface plate 41a or the left and right side plate 41c.

The first pipeline 46 is connected to at least one of the left and right side plate 41c. The first pipeline 46 is connected to an upstream pipeline 47 whose base end side is connected to a blower 70 such as a compressor or a fan and extends to the first casing 41, and is connected to the upstream pipeline 47 to move inside the first casing 41. It has a downstream conduit 48 extending in the moving direction. The blower 70 is driven when the coke oven 1 is in operation, and supplies air F1 to the inside of the first casing 41 via the first pipeline 46.

As shown in FIGS. 5 and 9, the upstream pipeline 47 is connected to the upper end side of the side plate 41c. Specifically, the upstream pipeline 47 is connected to the side plate 41c above the horizontal plate 44. The upstream pipeline 47 extends upward from the side plate 41c above the target passage portion 65 and bends rearward. As a result, it is possible to prevent the upstream pipeline 47 of the first pipeline 46 from coming into contact with the target 9 when the mobile device is traveling.

As shown in FIGS. 8 and 9, the downstream pipeline 48 is located above the horizontal plate 44 and extends in the left-right direction. The downstream pipeline 48 is supported by the horizontal plate 44 via a fixing bracket 45 provided on the horizontal plate 44. The downstream pipeline 48 has a blower port 48a that blows air F1 sent out from the blower 70 into the inside of the first casing 41. A plurality of the air outlets 48a are formed, for example, separated from each other in the left-right direction and face the front plate 41d. The size, number, and shape of the air outlets 48a were tested according to the capacity of the blower 70, the size of the downstream pipe 48, etc. so that the air F1 was sent to the opposite side in the left-right direction from the upstream pipe 47. , Set based on simulation.

The air F1 flowing from the upstream pipeline 47 to the downstream pipeline 48 is supplied to the inside of the first casing 41 from the air outlet 48a. In this case, since the downstream pipeline 48 extends in the left-right direction inside the first casing 41, the air F1 can be efficiently sent to the side opposite to the upstream pipeline 47. Therefore, uniform air F1 is blown into the inside of the first casing 41 from each of the air outlets 48a of the downstream pipeline 48.

Then, as shown in FIG. 8, the air F1 cools the light source 30 by flowing from the gap S along the entire light source 30. After that, the air F1 is ejected from the first discharge port 43 toward the target passing portion 65. When the target 9 is located at the target passing portion 65, the air F1 is blown onto the back surface portion 9b of the target 9. As a result, dust and water vapor adhering to the back surface portion 9b and the opening portion 9c of the target 9 can be blown off. The downstream pipeline 48 may not be provided. That is, the air F1 may be directly supplied from the upstream pipeline 47 to the inside of the first casing 41.

The second casing 50 is formed in a box shape by the upper surface plate 50a, the lower surface plate 50b, the left and right side surface plates 50c, the rear surface plate 50d, and the second partition plate 50e facing the rear surface plate 50d. The second casing 50 has a light-shielding property and an airtightness. As a result, the second casing 50 suppresses the intrusion of sunlight, external light such as surrounding electric lamps, dust, and water vapor into the inside.

The upper surface plate 50a of the second casing 50 is closed above the image pickup apparatus 35 and its front end is connected to the hood plate 60. The lower surface plate 50b closes the lower part of the image pickup device 35 and supports the image pickup device 35 via a fixing bracket 51 provided on the rear side (rear surface plate 50d side). The left and right side surface plates 50c are inclined so as to spread from the rear to the front, and block both the left and right sides of the image pickup apparatus 35. That is, the second casing 50 is formed so that the front side is wider than the rear side in the left-right direction. At least one of the left and right side plate 50c of the second casing 50 has a second pipeline 53 that supplies air F2 to the image pickup apparatus 35. The rear surface plate 50d connects between the rear end of the upper surface plate 50a and the rear end of the lower surface plate 50b to block the rear of the image pickup apparatus 35.

The second partition plate 50e is located between the image pickup apparatus 35 and the target 9 (target passing portion 65) and faces the first partition plate 41e in the front-rear direction. That is, the target passing portion 65 is between the first partition plate 41e and the second partition plate 50e. The second partition plate 50e has a second discharge port 52 that allows light from the light source 30 to pass through and discharges air F2 to the target 9.

The second discharge port 52 communicates between the inside of the second casing 50 and the target passing portion 65. The second discharge port 52 is formed in a slit shape extending in the moving direction (left-right direction) of the moving machine at a position facing the first discharge port 43 of the first casing 41. In this case, the second discharge port 52 faces the first discharge port 43 in the front-rear direction. Further, as shown in FIG. 7, the second discharge port 52 is arranged on the axis XX of the optical axis of the image pickup apparatus 35. That is, the light source 30, the first discharge port 43, and the second discharge port 52 are arranged on the axis XX of the optical axis of the image pickup apparatus 35.

Further, the second discharge port 52 is provided with (coated) a material having a low light reflectance on the inner surface thereof, or is surface-treated so that the light reflectance is low. As a result, it is possible to suppress the light of the light source 30 from being reflected and diffused on the inner surface of the second discharge port 52. As a result, the image pickup apparatus 35 can improve the detection accuracy of the target 9 by focusing on the target 9 (opening 9c) passing between the first discharge port 43 and the second discharge port 52.

The size of the second discharge port 52 is formed so that the image pickup apparatus 35 can accurately detect the target 9, and the air F2 can blow off foreign matter such as dust adhering to the target 9. That is, the inside of the second casing 50 has a positive pressure more than the outside due to the supply of air F2 from the second pipeline 53.

As a result, the air F2 is vigorously ejected from the second discharge port 52 toward the target passing portion 65, so that it is possible to suppress foreign matter such as dust from entering the inside of the second casing 50. .. Therefore, it is possible to prevent foreign matter such as dust from adhering to the image pickup apparatus 35. Further, the air F2 discharged from the second discharge port 52 is blown onto the surface portion 9a of the target 9, and foreign matter such as dust adhering to the target 9 can be blown off.

The second pipeline 53 is connected to at least one of the left and right side plate 50c. The base end side of the second pipeline 53 is connected to a blower 70 such as a compressor or a fan and extends to the second casing 50. The second pipeline 53 is connected to the rear end side of the side plate 50c and supplies air F2 toward the image pickup apparatus 35. The blower 70 is driven when the coke oven 1 is in operation, and may be the same as that supplying air F1 to the inside of the first casing 41, or may be provided separately.

As shown in FIGS. 6 and 7, the air F2 cools the image pickup device 35 by flowing from the second pipeline 53 toward the image pickup device 35. After that, the air F2 flows forward inside the second casing 50 and is ejected from the second discharge port 52 toward the target passing portion 65. When the target 9 is located at the target passing portion 65, air F2 is blown onto the surface portion 9a of the target 9. As a result, dust and water vapor adhering to the surface portion 9a and the opening portion 9c of the target 9 can be blown off.

The target core sensor device 20 according to the present embodiment has the above-described configuration, and next, the operation of the target core sensor device 20 will be described.

The coke oven 1 is automated for moving and aligning the moving machine to the working position and for each furnace operation. The mobile device is equipped with a target core sensor device 20 for detecting a target 9 provided at each work position. The target core sensor device 20 has a light source 30 that irradiates the target 9 with light, and an image pickup device 35 that images the target 9 irradiated with the light. The image pickup apparatus 35 detects the light / dark information of the target 9 and transmits the image data to the image processing unit 11.

The image processing unit 11 detects the amount of deviation between the center of the visual field of the image pickup apparatus 35 and the target 9 from the received image data (light and dark information). Then, the control unit 12 moves the mobile device so that the center of the target 9 in the left-right direction is located at the center of the visual field of the image pickup device 35 based on the deviation amount. Further, the image processing unit 11 detects the working position from the light / dark information between the opening 9c of the target 9 and the other portion, and transmits the position information to the control unit 12. As a result, the control unit 12 can specify the working position of the mobile device.

By the way, around the equipment of the coke oven 1, coal and coke dust are scattered, and a large amount of water vapor and gas are present, which hinders the imaging of the target. Therefore, a target core sensor device that suppresses foreign matter such as dust from entering the visual field space of the image pickup device by an air curtain has been proposed.

However, in order to prevent dust and the like from entering the visual field space of the image pickup apparatus, a large amount of air for forming an air curtain must be sent, which may increase the cost. Further, if the amount of air sent is insufficient, there is a possibility that the simple sealed state of the visual field space cannot be maintained. Further, if the wind speed of the wind forming the air curtain becomes non-uniform, there is a risk that surrounding dust or the like may be caught in the visual field space.

Further, a target core sensor device that discharges air from above the glass surface of the light source has been proposed. In this case, at a position away from the discharge portion that discharges air to the glass surface, dust or water vapor may be caught in the turbulent air vortex. The glass surface is exposed to the outside (target side). Therefore, there is a risk that air containing water vapor, dust, etc. will be blown onto the glass surface and dirt will adhere to it. Further, since air is blown to the glass surface, there is a possibility that dust and the like adhering to the target cannot be blown off.

Further, it has been proposed that an LED lamp having a long life and low power consumption is used as the light source. Since LED lamps are sensitive to heat, sufficient cooling is required. In addition, the image pickup device also needs to be sufficiently cooled. Therefore, it has been proposed that the target core sensor device cools the light source (LED lamp) and the image pickup device with a vortex tube. However, vortex tubes require high air pressure to bring out the cooling performance. As a result, a high-capacity blower is required so that the pressure between the compressed air for removing dust adhering to the glass surface and the compressed air for cooling the light source and the image pickup device does not decrease, which may increase the cost. be.

Therefore, the target core sensor device 20 of the present embodiment has a first casing 41 for accommodating the light source 30, and a second casing 50 for accommodating the image pickup device 35. The first casing 41 has a first partition plate 41e facing the light source 30. Further, the first casing 41 has a first pipeline 46 for supplying air F1 to the inside. The air F1 that has flowed out from the first pipeline 46 into the first casing 41 cools the light source 30. The first partition plate 41e has a first discharge port 43 that allows light emitted from the light source 30 to pass through and blows air F1 to the target 9.

On the other hand, the second casing 50 has a second partition plate 50e in the viewing direction of the image pickup apparatus 35. Further, the second casing 50 has a second pipeline 53 for supplying air F2 to the inside. The air F2 that has flowed out from the second pipeline 53 into the inside of the second casing 50 cools the image pickup apparatus 35. The second partition plate 50e has a second discharge port 52 that allows light emitted from the light source 30 to pass through and blows air F2 to the target 9.

Next, the flow state of the air F1 supplied to the inside of the first casing 41, the flow state of the air F2 supplied to the inside of the second casing 50, and their actions will be described.

The air F1 flowing through the upstream pipe 47 of the first pipe 46 by the blower 70 flows out from the air outlet 48a of the downstream pipe 48 into the inside of the first casing 41. In this case, since the downstream pipeline 48 extends from the first casing 41 in the traveling direction (left-right direction) of the mobile device, air F1 can be supplied from the air outlet 48a to the entire inside of the first casing 41.

Then, the air F1 flows from the gap S formed between the horizontal plate 44 and the front plate 41d toward the front surface of the light source 30 opposite to the light emitting surface 30a. After that, the air F1 flows from below the light source 30 toward the light emitting surface 30a. As a result, the air F1 can flow through the entire light source 30 and efficiently cool the light source 30.

In this case, the air F1 is preferably cooled by a cooling device (not shown). That is, since the coke oven 1 must continue to supply coke to the blast furnace, it continues to operate together with the blast furnace for a long time. As a result, the light source 30 also continues to emit light for a long time, and the amount of heat generated increases. Therefore, by cooling the air F1, the cooling capacity for the light source 30 can be increased, and the life of the light source 30 can be improved.

Then, the air F1 is discharged from the first discharge port 43 of the first partition plate 41e toward the target passing portion 65. In this case, the first discharge port 43 is formed in a slit shape extending in the traveling direction of the mobile device. Therefore, the air F1 is vigorously blown to the back surface portion 9b and the opening portion 9c of the target 9 located inside the target passing portion 65. For example, if foreign matter such as dust adheres to the opening 9c of the target 9, the light / dark information captured by the image pickup apparatus 35 may be erroneous. However, when the target 9 enters the inside of the target passing portion 65, the air F1 is blown from the first discharge port 43. Therefore, foreign matter such as dust adhering to the target 9 can be removed at an early stage, and erroneous detection of the image pickup apparatus 35 can be suppressed.

Further, since the air F1 flows from the first discharge port 43 toward the target passing portion 65, it is possible to suppress foreign matter such as dust from entering the inside of the first casing 41 from the target passing portion 65. .. Therefore, it is possible to suppress the adhesion of dust, water vapor, etc. to the light emitting surface 30a of the light source 30, and improve the life of the light source 30.

On the other hand, the air F2 flowing through the second pipeline 53 by the blower 70 flows out to the inside of the second casing 50. In this case, the outflow opening of the second conduit 53 faces the image pickup apparatus 35. Therefore, the air F2 flows out from the second conduit 53 toward the image pickup apparatus 35. Due to the operation of the coke oven 1, the image pickup apparatus 35 will continue to operate for a long time, and the amount of heat generated will increase. Therefore, it is preferable that the air F2 is also cooled by the cooling device like the air F1. As a result, the cooling capacity for the image pickup device 35 can be increased, and the life of the image pickup device 35 can be improved.

Then, the air F2 is discharged from the second discharge port 52 of the second partition plate 50e toward the target passing portion 65. In this case, the second discharge port 52 is formed in a slit shape extending in the traveling direction of the mobile device. Therefore, the air F2 is vigorously blown to the surface portion 9a and the opening portion 9c of the target 9 located inside the target passing portion 65. That is, when the target 9 enters the inside of the target passing portion 65, the air F2 is blown from the second discharge port 52. Therefore, foreign matter such as dust adhering to the target 9 can be removed at an early stage, and erroneous detection of the image pickup apparatus 35 can be suppressed.

In this way, the air F1 acts as a cooling air for cooling the light source 30, and also acts as a discharge air for removing foreign substances such as dust adhering to the back surface portion 9b and the opening portion 9c of the target 9. Further, by keeping the inside of the first casing 41 at a positive pressure more than the outside by the air F1, foreign matter such as dust is suppressed from entering the inside of the first casing 41.

On the other hand, the air F2 acts as a cooling air for cooling the image pickup apparatus 35, and also acts as a removal air for removing foreign substances such as dust adhering to the surface portion 9a and the opening portion 9c of the target 9. Further, the air F2 keeps the inside of the second casing 50 at a positive pressure more than the outside, thereby suppressing foreign matter such as dust from entering the inside of the second casing 50.

Further, since the air F1 and F2 discharged to the target passing portion 65 flow from the target passing portion 65 to the outside, it is possible to suppress foreign matter such as dust from entering the target passing portion 65. As a result, the internal state of the target passing portion 65 can be kept good, so that the detection accuracy of the target 9 by the image pickup apparatus 35 can be improved.

Thus, the present embodiment is provided in a mobile device (for example, an extruder 5) that moves the coke furnace 1, and a target core sensor device 20 that detects a target 9 provided corresponding to each working position of the mobile device. It is located between the light source 30 that irradiates light, the image pickup device 35 that is provided facing the light source 30 and detects the light emitted from the light source 30, and the light source 30 and the target 9. A position between the image pickup device 35 and the target 9 and a first partition plate 41e having a first discharge port 43 that allows light from the light source 30 to pass through and discharges air F1 to the target 9. A second partition plate 50e having a second discharge port 52 for passing light from the light source 30 and discharging air F2 to the target 9 is provided, and the second discharge port 52 is said. It extends in the direction of movement of the mobile device.

As a result, the first discharge port 43 of the first partition plate 41e can discharge the air F1 toward the target 9 and remove foreign matter such as dust adhering to the target 9. Further, since the air F1 is discharged from the first discharge port 43, foreign matter such as dust and water vapor can be suppressed from adhering to the light source 30, and the life of the light source 30 can be improved.

Further, the second discharge port 52 of the second partition plate 50e can discharge the air F2 toward the target 9 to remove foreign matter such as dust adhering to the target 9. Further, since the air F2 is discharged from the second discharge port 52, it is possible to suppress foreign matter such as dust and water vapor from adhering to the image pickup device 35 and improve the life of the image pickup device 35.

Further, the second discharge port 52 is arranged on the axis XX of the optical axis of the image pickup device 35. As a result, the image pickup apparatus 35 can easily focus on the target 9 and can improve the detection accuracy of the target 9.

Further, it has a first casing 41 that houses the light source 30 and has the first partition plate 41e, and a second casing 50 that houses the image pickup device 35 and has the second partition plate 50e. The casing 41 has a first conduit 46 that supplies air F1 toward the light source 30, and the second casing 50 has a second conduit 53 that supplies air F2 toward the image pickup device 35. is doing.

As a result, the air F1 can cool the light source 30. Further, the air F2 can cool the image pickup apparatus 35. As a result, the life of the light source 30 and the image pickup device 35 can be improved. Further, the air F1 and F2 suppress foreign substances such as dust from entering the insides of the first and second casings 41 and 50, and the cooling air that cools the light source 30 and the image pickup apparatus 35 and the target 9 are used. Since it is also used as a removing wind for removing foreign matter such as adhering dust, it is possible to reduce the cost as compared with the case where each is provided separately.

Further, the inside of the first casing 41 becomes more positive pressure than the outside due to the supply of air F1 from the first pipeline 46, and the inside of the second casing 50 is air from the second pipeline 53. By supplying F2, the pressure is higher than that of the outside. As a result, it is possible to prevent foreign substances such as dust and water vapor from entering the inside of the first and second casings 41 and 50 from the outside.

In the above-described embodiment, the case where the target core sensor device 20 is mounted on the extruder 5 and the target 9 is provided in each carbonization chamber 3a has been described as an example. However, the present invention is not limited to this, and for example, the target core sensor device 20 may be mounted on the coal loading vehicle 4 and the target may be provided at each working position of the coal loading vehicle 4. This also applies to the guide vehicle 6. Further, the target core sensor device 20 may be mounted on all mobile vehicles or may be mounted on any mobile vehicle.

As described above, the embodiments of the present invention are presented as examples, and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention and its equivalents described in the claims.

1 coke oven, 2 heat storage chamber, 3 kiln, 3a carbonizing chamber, 4 coal loading car, 5 extruder, 6 guide car, 7 fire extinguishing train, 8a-8d rail 9 target, 9a front surface, 9b back surface, 9c opening, 10 Working position detection device, 11 Image processing unit, 11a memory, 11b target reference, 11c target calculation unit, 12 control unit, 20 target core sensor device, 30 light source, 30a light emitting surface, 35 image pickup device, 35a viewing range, 40 boxes Body, 41 1st casing, 41a top plate, 41b bottom plate, 41c side plate, 41d front plate, 41e 1st partition plate, 42 fixing bracket, 43 1st discharge port, 44 horizontal plate, 45 fixing bracket, 46 1st Pipeline, 47 upstream pipeline, 48 downstream pipeline, 48a air outlet, 50 second casing, 50a top plate, 50b bottom plate, 50c side plate, 50d rear surface plate, 50e second partition plate, 51 fixing bracket, 52nd 2 Discharge port, 53 2nd pipeline, 60 Hood plate, 65 Target passage part, 70 Blower, F1, F2 air, S gap, XX optical axis axis

Claims (4)

It is a target core sensor device that detects a target provided in a mobile machine that moves a coke oven and is provided corresponding to each working position of the mobile machine.
A light source that irradiates light,
An image pickup device provided facing the light source and detecting the light emitted from the light source, and an image pickup device.
A first partition plate located between the light source and the target and having a first discharge port for passing light from the light source and discharging air to the target.
A second partition plate located between the image pickup device and the target and having a second discharge port for passing light from the light source and discharging air to the target.
Equipped with
The second discharge port is a target core sensor device extending in the moving direction of the moving machine. The target core sensor device according to claim 1, wherein the second discharge port is arranged on the axis of the optical axis of the image pickup device. It has a first casing that houses the light source and has the first partition plate, and a second casing that houses the image pickup device and has the second partition plate.
The first casing has a first conduit for supplying air to the light source.
The target core sensor device according to claim 1 or 2, wherein the second casing has a second conduit for supplying air to the image pickup device. The inside of the first casing becomes more positive pressure than the outside due to the supply of air from the first pipeline.
The target core sensor device according to claim 3, wherein the inside of the second casing has a positive pressure more than the outside due to the supply of air from the second pipeline.

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