CN115171346A - Sagger position monitoring device and sagger position monitoring method - Google Patents
Sagger position monitoring device and sagger position monitoring method Download PDFInfo
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- CN115171346A CN115171346A CN202110291243.5A CN202110291243A CN115171346A CN 115171346 A CN115171346 A CN 115171346A CN 202110291243 A CN202110291243 A CN 202110291243A CN 115171346 A CN115171346 A CN 115171346A
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 26
- 238000012544 monitoring process Methods 0.000 title claims description 25
- 238000000034 method Methods 0.000 title claims description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 43
- 238000010191 image analysis Methods 0.000 claims abstract description 18
- 238000003384 imaging method Methods 0.000 claims description 16
- 238000006073 displacement reaction Methods 0.000 description 9
- 238000010304 firing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/70—Determining position or orientation of objects or cameras
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D5/00—Supports, screens, or the like for the charge within the furnace
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- General Physics & Mathematics (AREA)
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- Quality & Reliability (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention provides a sagger position monitoring device (1) arranged on a continuous heating furnace, the sagger position monitoring device is characterized by comprising: a transparent observation window (2) which is provided on the upper surface of a frame (10) of the continuous heating furnace so that the interior of the continuous heating furnace can be observed from the outside; a camera (3) which is provided above the frame of the continuous heating furnace and which captures the position of a sagger inside the continuous heating furnace through the observation window; and an image analysis device (41) that determines whether the position of the sagger is within a predetermined range based on the image captured by the camera. According to the sagger position monitoring device (1), when the limit value of the deviation of the sagger position is changed, the arrangement position of a sensor and the like arranged in the furnace does not need to be adjusted in a physical mode, and the change operation is easy.
Description
Technical Field
The present invention relates to a sagger position monitoring device and a sagger position monitoring method.
Background
Conventionally, there has been known a continuous firing furnace such as a roller kiln in which a plurality of saggers are continuously fired in parallel in the furnace width direction. In such a continuous burning furnace, the displacement of the position of the sagger in the conveying direction is detected by a sensor, for example, whether the sagger reaches the measurement position at a predetermined timing. Further, the lateral shift in the furnace width direction is detected visually or by providing a photoelectric sensor.
Disclosure of Invention
Problems to be solved by the invention
However, in the method of detecting the displacement of the position of the sagger by visual observation, the operator must continuously monitor the operation of the continuous burning furnace, which is not practical. In the method of detecting the displacement of the sagger position by the sensor, when the threshold value of the displacement of the sagger position is changed, the sensor position needs to be adjusted, and the adjustment work is troublesome.
Therefore, an object of the present invention is to provide a sagger position monitoring device and a sagger position monitoring method that can detect a continuous deviation of the sagger position and easily change a limit value of the deviation of the sagger position.
Means for solving the problems
In order to solve the above problem, a sagger position monitoring device according to a first aspect of the present invention is a sagger position monitoring device (1) installed in a continuous heating furnace, comprising:
a transparent observation window (2) which is provided on the upper surface of the frame (10) of the continuous heating furnace so that the interior of the continuous heating furnace can be observed from the outside;
a camera (3) which is provided above the frame of the continuous heating furnace and which captures the position of a sagger inside the continuous heating furnace through the observation window;
an image analysis device (41) that determines whether the position of the sagger is within a given range, based on the image captured by the camera; and
and alarm devices (42, 43) that issue an alarm when the image analysis device determines that the position of the sagger is not within the predetermined range.
In a second aspect of the present invention, in the sagger position monitoring apparatus according to the first aspect, the image analysis device is configured to be able to set the predetermined range in a plurality of stages.
A third aspect of the present invention is a continuous heating furnace including the sagger position monitoring devices of the first to second aspects at an inlet and/or an outlet of the continuous heating furnace.
A fourth aspect of the present invention is a method for monitoring a position of a magazine, including:
an imaging step (S1, S11, S21) for imaging the position of the sagger in the continuous heating furnace by a camera;
a first sagger position judging step (S2, S12, S26) for analyzing the image shot by the shooting step and judging whether the position of the sagger is within a first given range; and
a first alarm issuing step (S3, S15, S29) of issuing an alarm when the position of the sagger is determined not to be within the first predetermined range by the first sagger position determining step.
A fifth aspect of the present invention is a method for monitoring a position of a magazine, including:
an imaging step (S1, S11, S21) for imaging the position of a sagger in the continuous heating furnace by a camera;
a first sagger position judging step (S2, S12, S26) for analyzing the image shot by the shooting step and judging whether the position of the sagger is within a first given range; and
and a conveyance stopping step (S4) for stopping conveyance of the sagger when the position of the sagger is determined not to be within the first predetermined range by the first sagger position determining step.
A sixth aspect of the present invention is a method for monitoring a position of a magazine, including:
an imaging step (S1, S11, S21) for imaging the position of the sagger in the continuous heating furnace by a camera;
a first sagger position judging step (S2, S12, S26) for analyzing the image shot by the shooting step and judging whether the position of the sagger is in a first given range;
a first alarm issuing step (S3, S15, S29) of issuing an alarm when it is determined by the first sagger position determining step that the position of the sagger is not within the first predetermined range;
a second sagger position judging step (S14, S28) for analyzing the image shot in the shooting step and judging whether the position of the sagger is within a second given range; and
a second alarm issuing step (S16, S30) of issuing an alarm when it is determined by the second sagger position determining step that the position of the sagger is not within the second predetermined range.
A seventh aspect of the present invention is a method for monitoring a position of a magazine, including:
an imaging step (S1, S11, S21) for imaging the position of the sagger in the continuous heating furnace by a camera;
a first sagger position judging step (S2, S12, S26) for analyzing the image shot by the shooting step and judging whether the position of the sagger is in a first given range;
a first alarm issuing step (S3, S15, S29) of issuing an alarm when it is determined by the first sagger position determining step that the position of the sagger is not within the first predetermined range;
a second sagger position judging step (S14, S28) for analyzing the image shot in the shooting step and judging whether the position of the sagger is within a second given range; and
and a conveyance stopping step (S17, S31) for stopping conveyance of the sagger when the second sagger position judging step judges that the position of the sagger is not within the second predetermined range.
Effects of the invention
The present invention is configured to take an image of the position of the sagger from a transparent observation window provided on the upper surface of the housing of the continuous heating furnace by using a camera, and determine whether the position of the sagger is within a predetermined range by using an image analysis device, and therefore, when changing the limit value of the displacement of the sagger position, it is not necessary to physically adjust the installation position of a sensor or the like provided in the furnace, and the change work is easy.
Drawings
Fig. 1 is a schematic diagram for explaining an outline of a case where a sagger position monitoring device of the present invention is installed in the vicinity of an entrance of a continuous heating furnace.
FIG. 2 is a plan view of the vicinity of an inlet of a continuous heating furnace.
Fig. 3 is a flowchart of the sagger position monitoring process by the sagger position monitoring device.
Fig. 4 is a flowchart of the sagger position monitoring process by the sagger position monitoring device.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The same or equivalent constituent elements, members and processes shown in the respective drawings are denoted by the same reference numerals, and overlapping descriptions are appropriately omitted.
(first embodiment)
Fig. 1 is a schematic diagram for explaining an outline of a case where the sagger position monitoring device 1 of the present invention is installed in the vicinity of the entrance of the continuous heating furnace, and shows a frame 10 in the vicinity of the entrance of the continuous heating furnace as being cut in the vertical direction. The position where the sagger position monitoring device 1 is installed may not be the inlet of the continuous heating furnace, but may be the outlet of the continuous heating furnace, or both the inlet and the outlet. Further, the sagger S may be stacked in a plurality of layers.
The sagger position monitoring device 1 includes: a transparent observation window 2 provided on an upper surface of a frame 10 of the continuous heating furnace so that the inside of the continuous heating furnace can be observed from the outside; a camera 3 which is provided above the housing 10 of the continuous heating furnace and which photographs the position of the sagger S inside the continuous heating furnace through the observation window 2; and an image analysis device 41 that determines whether the position of the sagger S is within a given range based on the image captured by the camera 3.
The observation window 2 is provided with heat-resistant glass. The length w1 of the observation window 2 in the transport direction X of the continuous heating furnace is preferably 30cm or more, and the length w2 of the observation window 2 in the width direction Y of the continuous heating furnace is preferably 150cm or more. The observation window 2 may be divided. Further, the opening may be formed by a plurality of openings.
The camera 3 is disposed inside an air-cooling housing provided with a blower, not shown. The camera 3 is supported by a camera support member, and the camera support member includes: a support column 31 whose height can be adjusted in the vertical direction; and a camera fixing member 32 provided at an upper end of the support column 31 and fixing the camera 3 to be rotatable in a horizontal direction and/or a vertical direction.
In the present embodiment, the image analysis device 41 is realized by reading a program stored in the storage device 44 into a computer and executing the program. Further, the apparatus comprises: the alarm devices 42 and 43 issue an alarm when the image analysis device 41 determines that the position of the sagger S is not within the predetermined range. In the present embodiment, the alarm device 42 is a display that visually issues a warning, and the warning device 43 is a speaker that audibly issues a warning. The storage device 44 also has a function as a moving image storage device for storing moving images captured by the camera 3. By providing the image analysis device 41 with a moving image storage device, the user can confirm the inclination of the sagger S when the alarm is issued, and it becomes easy to find the cause of the displacement of the sagger position or the cause in the case of an accident in the furnace. The image analysis device 41, the alarm devices 42 and 43, and the recording device 44 are provided inside the operation device adjacent to the continuous firing furnace.
The sagger position monitoring device 1 detects the positional deviation of the sagger S by determining whether the position of the sagger S is within a predetermined range by the image analyzing device 41. The predetermined range in the present embodiment is a range W set in the width direction Y of the continuous heating furnace at the height position Z1 of the sagger S, and the range W is preferably 140cm or more and 240cm or less. As shown in fig. 3, the range W is a range sandwiched by boundary lines R1 and R2 extending in the conveyance direction X, and can be set and adjusted by a user of the sagger position monitoring apparatus 1. The image analysis device 41 can set the predetermined range in a plurality of stages, and for example, in the image analysis device 41 of the present embodiment, a first predetermined region sandwiched by the boundary lines R1 and a second predetermined region sandwiched by the boundary lines R2 arranged outside the first predetermined region are set. The boundaries R1 and R2 may be set to different values on the left and right sides, respectively.
A first embodiment of the sagger position monitoring process by the sagger position monitoring apparatus 1 will be described with reference to fig. 3. When the continuous firing furnace is operated, the plurality of saggers S are conveyed in parallel in the furnace width direction, and the sagger position monitoring device 1 is activated. When the sagger position monitoring apparatus 1 is started, the sagger position monitoring apparatus 1 acquires an image of the sagger position via the camera 3 (S1). Next, the image analysis device 41 processes the acquired image and determines whether the sagger S is located within the first predetermined range R1 (S2). If the sagger S is located within the first predetermined range R1 (yes in S2), the process returns to S1. On the other hand, if the sagger S is not located within the first predetermined range R1 (no in S2), a first alarm is issued via the display 42 and the speaker 43 (S3). Further, a signal for stopping the conveyance of the sagger is sent to the continuous burning furnace (S4), and the process is ended.
By performing such a sagger position monitoring process, it is possible to detect a deviation of the sagger position and to issue an alarm to a user, thereby preventing an accident in the furnace.
Next, a second embodiment of the sagger position monitoring process by the sagger position monitoring apparatus 1 will be described with reference to fig. 4. The present embodiment is different from the first embodiment in that a second sagger position determining step of determining whether the sagger S is located within the second predetermined range R2 is provided in addition to the first sagger position determining step of determining whether the sagger S is located within the first predetermined range R1.
When the sagger position monitoring device 1 is activated, the sagger position monitoring device 1 acquires an image of the sagger position via the camera 3 (S11). Next, the image analysis device 41 processes the acquired image and determines whether or not the sagger S is located within the first predetermined range R1 (S12). If the sagger S is located within the first predetermined range R1 (yes in S12), the process returns to S11. Further, in the case where the first alarm has been issued as described later, the first alarm is turned off in S13, but if the first alarm has not been issued, the first alarm remains turned off. On the other hand, in a case where the sagger S is not located within the first given range R1 (no in S12), it is determined whether the sagger S is located within the second given range R2 (S14). If the sagger S is located within the second predetermined range R2 (yes in S14), a first alarm is issued via the display 42 and the speaker 43 (S15), and the process returns to S11. On the other hand, if the sagger S is not located within the second predetermined range R2 (no in S14), a second alarm is issued via the display 42 and the speaker 43 (S16), and a signal for stopping the sagger conveyance is issued to the continuous burning furnace (S17), and the process is ended.
In the second embodiment, the first alarm is information for reminding the user of the fact that although the degree of positional deviation of the sagger S is not the degree of stopping the conveyance of the sagger S, a sign of the positional deviation of the sagger has occurred. The second alarm is information for reminding the user that the degree of the positional deviation of the sagger S exceeds the threshold value and that there is a possibility of an in-furnace accident when the conveyance of the sagger is continued.
By performing such a sagger position monitoring process, by setting the predetermined ranges R1 and R2 in a plurality of stages, the degree of the deviation of the sagger position can be detected in a plurality of stages, and therefore, the sign of the deviation of the sagger position can be more effectively monitored, and an accident in the furnace can be prevented.
By performing such a sagger position monitoring process, it is possible to detect a displacement of the sagger position.
According to the sagger position monitoring device 1 of the present embodiment, since the camera 3 is configured to photograph the position of the sagger S from the transparent observation window 2 provided on the upper surface of the housing 10 of the continuous heating furnace, and the image analyzing device 41 determines whether or not the position of the sagger S is within the predetermined range, when the limit value of the deviation of the position of the sagger S is changed, it is not necessary to physically adjust the installation position of the sensor or the like provided in the furnace, and the predetermined range can be changed on software, so that the change work is easy. Further, by setting the predetermined range in a plurality of stages, the degree of displacement of the position of the sagger can be detected in a plurality of stages, and therefore, the sign of displacement of the position of the sagger can be monitored more effectively, and a furnace accident can be prevented.
Description of the symbols
1. Sagger position monitoring device
10. Frame of continuous heating furnace
2. Observation window
3. Video camera
41. Image analysis device
42. 43 alarm device
S sagger
X conveying direction
The Y width direction.
Claims (7)
1. A sagger position monitoring device (1) provided in a continuous heating furnace, the sagger position monitoring device comprising:
a transparent observation window (2) which is provided on the upper surface of a frame (10) of the continuous heating furnace so that the interior of the continuous heating furnace can be observed from the outside;
a camera (3) which is provided above the housing of the continuous heating furnace and which captures the position of the sagger inside the continuous heating furnace through the observation window;
an image analysis device (41) that determines whether the position of the sagger is within a given range based on the image captured by the camera; and
and alarm devices (42, 43) that issue an alarm when the image analysis device determines that the position of the sagger is not within the predetermined range.
2. Sagger position monitoring device according to claim 1,
the image analysis device is capable of setting the given range in a plurality of stages.
3. A continuous heating furnace is characterized in that,
a sagger position monitoring device according to claim 1 or 2 is provided at an inlet and/or an outlet of a continuous heating furnace.
4. A method of monitoring a position of a magazine, comprising:
an imaging step (S1, S11, S21) for imaging the position of the sagger in the continuous heating furnace by a camera;
a first sagger position judging step (S2, S12, S26) for analyzing the image shot by the shooting step and judging whether the position of the sagger is in a first given range; and
a first alarm issuing step (S3, S15, S29) of issuing an alarm when the position of the sagger is determined not to be within the first predetermined range by the first sagger position determining step.
5. A method of monitoring a position of a magazine, comprising:
an imaging step (S1, S11, S21) for imaging the position of a sagger in the continuous heating furnace by a camera;
a first sagger position judging step (S2, S12, S26) for analyzing the image shot by the shooting step and judging whether the position of the sagger is in a first given range; and
and a conveyance stopping step (S4) for stopping conveyance of the sagger when the position of the sagger is determined not to be within the first predetermined range by the first sagger position determining step.
6. A method of monitoring a position of a magazine, comprising:
an imaging step (S1, S11, S21) for imaging the position of the sagger in the continuous heating furnace by a camera;
a first sagger position judging step (S2, S12, S26) for analyzing the image shot by the shooting step and judging whether the position of the sagger is within a first given range;
a first alarm issuing step (S3, S15, S29) of issuing an alarm when it is determined by the first sagger position determining step that the position of the sagger is not within the first predetermined range;
a second sagger position judging step (S14, S28) for analyzing the image shot in the shooting step and judging whether the position of the sagger is within a second given range; and
a second alarm issuing step (S16, S30) of issuing an alarm when it is determined by the second sagger position determining step that the position of the sagger is not within the second predetermined range.
7. A method of monitoring a position of a magazine, comprising:
an imaging step (S1, S11, S21) for imaging the position of a sagger in the continuous heating furnace by a camera;
a first sagger position judging step (S2, S12, S26) for analyzing the image shot by the shooting step and judging whether the position of the sagger is within a first given range;
a first alarm issuing step (S3, S15, S29) of issuing an alarm when it is determined by the first sagger position determining step that the position of the sagger is not within the first predetermined range;
a second sagger position judging step (S14, S28) for analyzing the image shot in the shooting step and judging whether the position of the sagger is in a second given range; and
and a conveyance stopping step (S17, S31) for stopping conveyance of the sagger when the second sagger position judging step judges that the position of the sagger is not within the second predetermined range.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110291243.5A CN115171346A (en) | 2021-03-18 | 2021-03-18 | Sagger position monitoring device and sagger position monitoring method |
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| CN202110291243.5A CN115171346A (en) | 2021-03-18 | 2021-03-18 | Sagger position monitoring device and sagger position monitoring method |
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| CN112197578A (en) * | 2020-10-10 | 2021-01-08 | 苏州汇科机电设备有限公司 | Electronic kiln with furnace lateral part observation function |
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