JP2965816B2 - Kiln core detector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kiln detecting apparatus used in coke oven equipment, and more particularly to a kiln detecting apparatus in which a moving machine for a coke oven is provided with a technique for detecting the core and the kiln number of each kiln. About.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 4, many coke ovens 1,... For purifying coke by carbonizing coal are installed in coke oven equipment. A coal loading inlet (not shown) for charging coal is provided, and the kiln lid 1a of each kiln 1,... Is opened by a coke pushing side moving machine 2 such as a crane, and the purified red hot coke is placed on the opposite side. In other words, it is pushed out to the coke loading side.
The guide wheel 3 is stopped at the fixed position on the loading side, and the red hot coke pushed out by the moving machine 2 passes through a guide gauge 3a of the guide wheel 3 to a trailer (not shown) connected to the locomotive 4. Be loaded. The locomotive 4 loads red hot coke and transports it to a predetermined fire extinguishing location, where the red hot coke is extinguished to generate coke.

Therefore, in the coke oven equipment as described above, it is necessary to reliably stop the extruding-side moving machine 2 and the loading-side moving machines 3 and 4 at the same workable position in the same kiln. If # 4 deviates from the home position, problems such as breakage of equipment, reduction in efficiency of unloading work, and variation in coke quality occur.

[0004] Conventionally, in order to stop the mobile machines 2 to 4 at fixed positions and to confirm the kiln number, an operator is mounted on the mobile machine 2 and the upper part of the guide car 3 and communicates with each other by wireless communication with each other. The red hot coke is loaded while checking the alignment of 2-4 and the kiln number.

However, in the above-described method for stopping the mobile machine at a fixed position and confirming the kiln number, the operator must always board the mobile machine 2, 3 or the like, and in an adverse environment such as high temperature and dust. Severe working conditions were imposed due to the progress of the work. Therefore, it was desired that the unmanned mobile machine be aligned with the work position and that the kiln number be confirmed.

Therefore, conventionally, from the viewpoint of unmanned measures, in addition to a touch roller for each of the moving machines 2 to 4, a pulse transmitter for generating a pulse number proportional to the number of rotations of the touch roller,
A set point (initial position) where a controller having an up / down counter and the like is mounted and each mobile machine 2 to 4 has
Is started, and the number of pulses generated from the pulse transmitter in accordance with the movement is counted by a counter, and the movement distance is measured. The target relative position is monitored, and the positioning of each of the moving machines 2 to 4 and the confirmation of the kiln number are performed.

[0007]

Accordingly, although the above-described unmanned countermeasure technology has been attempted to be largely unmanned, it still has many unsatisfactory surfaces, and furthermore, the touch roller is liable to slip or bounce. Position errors and errors due to abrasion of the touch roller occur, so that high-precision absolute position detection cannot be expected. Further, it is difficult to confirm the kiln number and the reliability is poor. For this reason, it is impossible to achieve complete unmanned operation of the mobile machine, and it is difficult for the operator to be released from work in a bad environment near the coke oven.

The present invention has been made in view of the above circumstances, and provides a kiln core detecting device capable of always accurately determining the absolute position of the moving machine and the position of the kiln core, and reliably stopping the moving machine at a fixed position. The purpose is to provide.

Another object of the present invention is to provide a kiln core detecting device for accurately and automatically detecting a kiln number. Still another object of the present invention is to provide a kiln core detecting device for simultaneously detecting a kiln core and a kiln number by using one detection object.

[0010]

According to a first aspect of the present invention, there is provided a coke oven, comprising: an object to be detected installed outside each kiln; a moving machine; A light source that irradiates light from the back side of the object to be detected, and a light source that is installed on the moving machine side and is located on both sides of the object within the field of view based on irradiation light passing through the object from the light source. Width measuring means for obtaining a light width, and a kiln core for detecting a kiln core from a shift amount between the center of the measurement visual field and the center of the detected object using light width signals on both sides of the detected object obtained by the width measuring means. This is a kiln core detection device provided with processing means.

Next, according to a second aspect of the present invention, there is provided a detection object in which a slit is formed in a necessary bit area among predetermined bit areas provided outside each coke oven kiln, While the light source is arranged from the kiln side to the back side of the detected object, the moving machine side performs field-of-view division at a predetermined slit pitch based on the detected object width obtained based on irradiation light passing through the detected object. And a kiln number detecting means for detecting the kiln number based on the presence or absence of light reception or the light receiving width in each divided area.

Further, according to a third aspect of the present invention, a slit is formed in a required bit area of a predetermined bit area of a detection object installed outside each coke oven kiln, and the slit is formed on the moving machine side. This is a kiln core detecting device that optically detects the state of a detecting body and a slit, and detects a kiln core and a kiln number only by using one piece of the target body.

[0013]

Therefore, the invention corresponding to claim 1 receives the irradiation light passing through the object from the light source by taking the above-described means, and makes the light on both sides of the object within the measurement field of view. After calculating the width, subtract the bright width on both sides to obtain "2".
By dividing by, the amount of deviation between the center of the measurement field of view and the center of the detected object can be obtained. At this time, if the mounting position of the detected object with respect to the kiln core is known in advance, the absolute position of the moving machine can be known. In addition, the kiln core of the mobile machine can be stopped based on the absolute position and the amount of displacement of the mobile machine.

According to a second aspect of the present invention, the mobile machine receives the irradiation light coming from the light source through the slit of the object to be detected, but at this time, the light is sequentially divided at a predetermined slit pitch within the width of the object to be detected. By determining the presence or absence of slit light or slit light width for each of the divided areas,
The kiln number can be easily detected.

Further, according to a third aspect of the present invention, a predetermined arithmetic expression is calculated based on a known measurement visual field width, a width of an object to be detected, a light width on both sides of the object to be detected, and the like by using one object to be detected. By using the calculation, the kiln core can be easily detected, and the kiln number can be detected based on the presence or absence of slit light that passes through the slit of the object to be detected. The loading operation can be performed smoothly.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In the coke oven equipment, a number of kilns 11,... For purifying coke are arranged in parallel. On the coke extruding side and the coke loading side of the kilns 11,..., Running rails 12 are laid in parallel with the large number of kilns 11,.
3 can run.

Numeral 21 denotes a column attached near the core (work center position) of each of the kilns 11,...
1, a target 22 is attached as an object to be detected by applying an anti-reflection coating to a plate made of, for example, stainless steel having excellent environmental resistance. In some cases, it is not possible to attach the column 21 to the position of the kiln core due to the installation location or other reasons. In this case, the mounting error with the kiln core is stored in advance for each kiln, and the absolute The mounting error is corrected to the absolute position obtained at the time of position detection.

Each target 22 has a kiln number detecting slit (7 bits) represented by a binary code 1/0 (bright / dark) for detecting a kiln number, and a binary number for detecting an kiln number error. 1/0 of the odd parity of the coded kiln number (bright /
An error detection slit (1 bit) represented by (dark) is provided, and is used not only for confirming the kiln number but also for determining the absolute position and the kiln core position of the mobile machine 13.

On the other hand, on the mobile machine 13 side, the mobile machine 1
For example, an extendable gantry 23 extending from the target 3 to the target 22 is provided. A light source 24 such as a fluorescent lamp that irradiates light from the back side of the target 22 toward the target 22 side, a CCD that converts a light reception signal level of irradiation light emitted from the light source 24 through the target 22 to an electric signal is provided on the mount 23. And a hood 26 for preventing disturbance light and dust from entering the camera 25.

Further, a camera 25 is provided on the mobile machine 13 side.
Of the width measuring unit 27 for binarizing the electric signal from the unit, measuring the light / dark width of a necessary portion in the measurement visual field, and judging the light / dark in each bit area, and the like. A kiln processing unit 28 is provided for calculating the position of the mobile machine 13 from the processing result and determining the kiln number.

Next, the operation of the apparatus configured as described above will be described. (1) Detection of kiln core (see FIG. 2). Mobile machine 1
At the time of the movement of 3 or after the fixed position is almost stopped, the light emitted from the light source 24 through the target is received by the camera 25, and the light receiving signal level is converted by the width measuring section 27 into a binary signal. FIG. 2 is a diagram showing the target 22 and its binary conversion state.

By the way, before detecting the kiln core, it is determined from the received light signal whether or not the target 22 itself, that is, whether or not the target 22 to be measured exists in the measurement visual field A of the camera 25. It is necessary to judge. In this determination, the distance from the rightmost light-dark change point to the leftmost light-dark change point in the measurement visual field A, that is, both edge widths (target width) B is measured, and the measured edge width B is set to a predetermined target 22. Is determined as to whether or not it matches the mechanical dimensions.

Here, the edge width B at both ends is the target 22
When the measured dimensions match the mechanical dimensions of
The left light width C, which is the width of the leftmost bright part of the image, is measured. D = A− (C + B) (1) A certain right light width D is calculated. Then, the data A to D are sent to the core processing unit 28.

The kiln core processing unit 28 uses the left light width C and the right light width D to calculate the camera 25 using the following equation (2).
E between the center 31 of the measurement visual field and the center 32 of the target
Is calculated.

E = (C−D) / 2 (2) As a result, E <0: the visual field center 31 is shifted to the left from the target center 32, and E = 0: the visual field center 31 is shifted to the target center 32. E <0: The visual field center 31 is shifted to the right from the target center 32, that is, the absolute position of the mobile machine 13 can be detected.

Therefore, if the moving machine 13 is moved in the direction opposite to the shifting direction in accordance with which direction the shift amount E has in which direction, the moving machine 13 stops at the kiln core position which is a fixed position. Can be done.

If the mounting position of the target 22 is shifted from the furnace core in advance, the amount of the shift is stored, and if the stored shift amount is corrected by adding or subtracting the shift amount E, the furnace core can be corrected. The remaining distance (corresponding to the deviation E) can be obtained, and the moving machine 13 can be similarly stopped at the kiln center position. (2) About the kiln number detection and the kiln number error detection (see FIG. 3).

As described above, the light emitted from the light source 24 through the target is received by the camera 25, and the light receiving signal level is converted into a binary signal by the width measuring unit 27.
FIG. 3 is a diagram showing the target 22 and its binary conversion state.

Also in this case, it is determined whether or not the target 22 itself exists in the measurement visual field A as in the case of detecting the core. Find out in which position. One of the reasons is that if the target 22 is partially missing from the measurement visual field A, the kiln number cannot be detected accurately.

Thereafter, the predetermined target 22
The slit 22a (7 areas) for detecting the kiln number and the slit 22b (1 area) for detecting the kiln error indicating the odd parity of the kiln number are designated based on the slit pitch F which is the mechanical dimension of the kiln. That is, the field of view is divided within the edge width A at both ends. Then, it is determined whether or not there is a bright portion corresponding to the slit width, which is a mechanical dimension, in the eight areas, and further, the kiln number is checked from the odd-number bit conversion of the bright portion including the slit 22a, and there is no error. If it is determined that the kiln number read is correct, the slit 22a for kiln number detection is determined.
The binarized data of (7 areas) is sent to the core processing unit 28.

Therefore, the kiln processing section 28 checks the work kiln number from the 7-bit binary data sent from the width measuring section 27. When the odd parity is adopted, detection of an all-dark state due to a burnout of the fluorescent lamp, which is the light source 24, detection of an all-dark state due to a positional shift of the field of view division, and reduction of irradiation light due to contamination of the fluorescent lamp surface. It is possible to detect an all-dark state, detect an all-bright state due to dropping of the target 22, detect an all-bright state due to the entry of disturbance light, and the like, but cannot detect any error in the case of error detection using even parity.

In processing the signal obtained by binarizing the light received through the target, the width measuring section 27 ignores a dark signal having a certain width or less (for example, a dotted line A in FIG. 3). In addition, measurement errors due to dust floating in the space between the fluorescent lamp and the camera 25 and dirt attached to the fluorescent lamp surface can be prevented.

Therefore, according to the configuration of the embodiment described above, the target 22 is installed outside each of the kilns 11,..., The light coming from the light source 24 passing through the target 22 is received, and the target width and both sides of the target are received. The absolute position and the core of the moving machine 13 are detected by a predetermined calculation from the bright width of the moving machine 13, so that the moving machine 13 can be reliably and automatically set to the furnace core position. Moreover, by simply setting the target 22 on the kiln side, and by using a target 22 having excellent environmental resistance, it is possible to sufficiently cope with a bad environment and to stably detect the kiln core for a long period of time. Contribute. Further, the kiln number can be detected only by detecting the presence or absence of light from the light source 24 using the kiln number detecting slit of the target 22, and the kiln number error detecting slit is provided in the kiln number detecting slit of the target 22. With this arrangement, errors in the kiln number due to various causes can be easily found, and the kiln number can always be accurately detected.

Further, the absolute position of the moving machine 13 and the core of the kiln can be detected from the whole view of the target using only the target on which the slit for detecting the kiln number is formed. Can be reduced, and the kiln core position and the kiln number can be detected, so that the operator can be unmanned and the operator can be released from work under adverse environments. In the above-described embodiment, the light source 24 is attached to the gantry 23 from the mobile machine 13 side.
However, any light source 24 that can be sufficiently used in a bad environment may be attached to the kiln 11 side. In addition, target 2
If only kiln cores are detected using
Needless to say, there is no need to provide a slit in 2. Furthermore, although a slit having a predetermined width is formed in the bit area of the predetermined bit area of the target 22 as necessary, the kiln number may be detected by changing the slit width, or from both the number of slits and the slit width. In addition, the present invention can be implemented with various modifications without departing from the scope of the invention.

[0035]

As described above, according to the present invention, various effects can be obtained as follows. According to the first aspect, the absolute position of the moving machine and the position of the kiln core can be detected with high accuracy, and therefore, the moving machine can be stopped at a fixed position without any manpower.

Next, according to the second aspect, the state of the slit light of the object to be detected can be read and the kiln number can be detected accurately and automatically. Further, according to the third aspect, the kiln core and the kiln number can be detected only by using one detection object, and can be sufficiently applied in a bad environment and can be realized at low cost.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment of a kiln core detecting device according to the present invention, wherein FIG. 1 (a) is a top view and FIG. 1 (b) is a side view.

FIG. 2 is an explanatory diagram for detecting a kiln core.

FIG. 3 is an explanatory diagram for detecting a kiln number.

FIG. 4 is a conceptual diagram of a general coke oven facility.

[Explanation of symbols]

11 ... kiln, 13 ... mobile machine, 22 ... target, 23 ...
Stand, 24 ... light source, 25 ... camera, 26 ... hood, 27
... width measuring section, 28 ... kiln core processing section.

Claims (3)

(57) [Claims] An object to be detected installed outside each coke oven kiln; a light source for irradiating light from the back side of the object to be detected;
Width measuring means which is installed on the moving machine side and obtains the light width on both sides of the object within the measurement field of view based on the irradiation light passing through the object from the light source, and obtained by the width measuring means. A kiln core detecting device, comprising: kiln core processing means for detecting a kiln core from an amount of deviation between the center of the measurement field of view and the center of the target object using bright width signals on both sides of the target object. 2. An object to be detected having a slit formed in a required bit area of a predetermined bit area provided outside each of the coke oven kilns; a light source for irradiating light from behind the object to be detected; Installed on the side, the target object width obtained based on the irradiating light passing through the target object from the light source is subjected to field-of-view division with a predetermined slit pitch to determine the presence or absence of light reception or the light reception width in each divided area. And a kiln number detecting means for detecting the kiln number based on the kiln number. 3. A slit is formed in a required bit area of a predetermined bit area of a detection object installed outside each of the coke oven kilns, and the state of the detection object and the slit is optically determined on the moving machine side. And a kiln core and a kiln number are detected by using a single object to be detected.