JP3144960B2 - 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 an apparatus for detecting a core used in coke oven equipment, and more particularly, to detecting a core and a kiln number of each kiln in a moving machine for a coke oven. The present invention relates to a core detection device having a function of correcting a change in resolution due to a change in distance.

[0002]

2. Description of the Related Art Generally, in a coke oven facility, as shown in FIG. 5, when refining coke by distilling coal, a large number of kilns 1,... Is provided with a coal insertion port (not shown) for inserting a coke.
The furnace lid 1a is opened and the refined red hot coke is extruded to the opposite side, that is, the coke loading side. The guide wheel 3 is stopped at a fixed position on the loading side, and the glow coke extruded 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 and transports red hot coke to a predetermined digestion site, where the red hot coke is digested to generate coke.

In such a coke oven facility, it is necessary to surely stop the extruding-side moving machine 2 and the loading-side moving machines 3 and 4 at a fixed position where the same kiln can work. If it deviates from the fixed position, the equipment will be damaged,
Problems such as a decrease in the efficiency of the unloading work and variations in coke quality occur.

Therefore, conventionally, when checking the stationary position stop and the kiln number of each of the mobile machines 2 to 4, an operator rides on the mobile machine 2 and the upper part of the guide car 3, respectively, and performs wireless communication with each other to perform the mobile machine. The red hot coke is loaded while checking the alignment of 2-4 and the kiln number.

However, in the above-described means, the operator must accompany the mobile machines 2 and 3 at all times, and work is carried out in a bad environment such as high temperature and dust. Therefore, it has been desired that the unmanned mobile machine be aligned with the work position and the kiln number be confirmed.

[0006]

As a part of the measures for unmanned operation, in addition to a touch roller for each of the moving machines 2 to 4, a pulse generator for generating a pulse number proportional to the rotation speed of the touch roller, and an up-down mechanism. A controller having a counter and the like is mounted, and each of the mobile machines 2 to 4 starts at a certain set point as an initial position, and counts the number of pulses generated from the pulse transmitter with the movement by the counter to thereby determine the moving distance. While measuring, the operator monitors the continuous relative position of each of the moving machines 2 to 4 while observing the moving distance and the external situation, and performs alignment with the work position and confirmation of the kiln number.

Such an unmanned countermeasure technology has been attempted to be unmanned to a large extent, but it still has many unsatisfactory surfaces, and furthermore, a slippage and a displacement of the touch roller due to slippage, an error due to abrasion of the touch roller, and the like. Occurs, and high-precision absolute position detection cannot be expected, and the confirmation of the kiln number is also poor. For this reason, it is impossible to realize a completely unmanned mobile machine, and it is difficult for an operator to be released from work in a bad environment near a coke oven.

SUMMARY OF THE INVENTION An object of the present invention is to always detect the absolute position of the furnace moving machine and the position of the furnace core accurately, and thus to reliably stop the furnace moving machine at a fixed position. The purpose is to provide.

[0009]

The present invention has the following configuration to achieve the above object. Claim 1
The invention corresponding to the present invention is characterized in that an object to be detected installed in each kiln of a coke oven, a light source attached to the coke oven moving machine and irradiating light from the back side of the object to be detected, and a light source installed in the coke oven moving machine A light receiving means for receiving the irradiation light that has passed unobstructed by the detection body, detecting the light receiving position thereof, and converting the light receiving position into an electric signal; and an output signal of the light receiving detecting means being taken in based on the light receiving position. Kiln core detecting means for detecting the kiln core, and a change in the resolution of the kiln core detecting means due to a change in the focal length of the light receiving and detecting means from the mechanical dimensions of the object to be detected. Correction means for correcting the furnace core.

According to a second aspect of the present invention, there is provided a coke oven moving machine which includes a detection object which is installed in each kiln of a coke oven and has a kiln number detection slit formed by encoding the kiln number of each kiln. A light source that is attached and irradiates light from the back side of the object to be detected, and a light receiving and detecting unit that is installed in a coke oven moving machine and receives irradiation light that has passed through each slit of the object to be detected and converts this to an electric signal. Kiln number detecting means for detecting a kiln number based on the presence or absence and width of light reception of the irradiation light passing through the slits, the output signal of the light receiving detecting means being taken in, and the mechanical size of the object to be detected, And correcting means for obtaining a change in the resolution of the kiln number detecting means due to a change in the focal length of the light receiving detecting means to correct the presence or absence and the width of light reception of the kiln number detecting means.

[0011] Further, the invention corresponding to claim 3 is an object to be detected which is installed in each kiln of a coke oven and has a kiln number detecting slit and an error detecting slit formed by coding the kiln number of each kiln; A light source attached to a coke oven moving machine and irradiating light from the back side of the object to be detected, and an irradiation light installed on the coke oven moving machine and passing through a kiln number detecting slit and an error detecting slit of the object to be detected are received. A light receiving detecting means for converting the light into an electric signal, and a kiln number is detected based on the presence or absence and the width of the irradiation light received by the output signal of the light receiving detecting means and passing through the kiln number detecting slit. Kiln number detecting means, and kiln number error detecting means for detecting an error in the kiln number based on the presence or absence or the width of the received light of the irradiation light that has passed through the error detecting slit when the output signal of the light receiving detecting means is taken in; , before From the mechanical dimensions of the object to be detected in the reception of the focal length the kiln number detecting means and kiln No. error the kiln number detecting means seeking changes in the resolution of the detection means and kiln No. error detection means according to a change in the photodetection means Correction means for correcting the presence or absence and the width.

[0012]

Therefore, in the kiln core detecting apparatus according to the present invention, light is radiated from the light source installed in the coke oven moving machine from the back side of the detection object installed in each kiln of the coke oven. Then, the irradiation light that has passed without being blocked by the object to be detected is received by the light receiving detection means installed in the coke oven moving machine, the light receiving position is detected, and converted into an electric signal. When the output signal of the light receiving detecting means is inputted to the core detecting means and the correcting means, the correcting means calculates the light receiving detecting means at that time based on the measured value of the width of the portion whose mechanical dimensions are clearly defined in advance and the mechanical dimensions. By calculating the resolution at the focal length and correcting the position of the kiln core detected by the kiln core detecting means, no error occurs even if the focal length of the light receiving detecting means changes.

According to a second aspect of the present invention, there is provided an apparatus for detecting a core of a coke oven, wherein the slit for detecting a kiln number which is installed in each kiln of the coke oven and which codes the kiln number of each kiln is formed. When light is emitted from the light source installed on the coke oven moving machine from the back side of the body, the irradiation light passing through each slit of the object to be detected is received by the light receiving detection means installed on the coke oven moving machine and the presence or absence of light reception is determined. The width is detected and converted to an electrical signal. When the output signal of the light receiving detecting means is input to the kiln number detecting means and the correcting means, the correcting means measures the width of the part whose mechanical dimensions are clearly defined, the mechanical dimensions, and the mechanical dimensions of the slits. Since the resolution at the focal length of the light receiving detection means at that time is calculated and the presence or absence and width of light reception detected by the kiln number detecting means are corrected, even if the focal length of the light receiving detecting means changes, the effect is also affected. The kiln number can be accurately detected without receiving it.

Further, in the kiln core detecting device according to the third aspect, a kiln number detecting slit and an error detecting slit which are installed in each kiln of the coke oven and encode the kiln number of each kiln are formed. When light is irradiated from the light source installed on the coke oven moving machine from the back side of the detected object, the irradiation light passing through each slit of the detected object is received by the light receiving detection means installed on the coke oven moving machine and received. Is detected and converted into an electric signal. When the output signal of the light receiving detecting means is inputted to the kiln number detecting means, the kiln number error detecting means and the correcting means, the correcting means measures the width of the portion where the mechanical dimensions are previously defined and the mechanical dimensions. From the mechanical dimensions of the slit for detecting the kiln number and the slit for detecting the error, the resolution at the focal length of the light receiving detecting means at that time is calculated, and the presence or absence of light reception detected by the kiln number detecting means and the kiln number error detecting means is calculated. And the width are corrected, so that even if the focal length of the light receiving detection means changes, the kiln number and the kiln number error can be detected without being affected by the change.

[0015]

An embodiment according to the present invention will be described below with reference to the drawings. FIGS. 1A and 1B show an example of the configuration of a core detection device according to the present invention. As shown in FIGS. 1A and 1B, 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 these kilns 11,...
Is installed, and the pushing-side moving machine and the loading-side moving machine 13 can run.

Numeral 21 denotes a column which is attached near the core (work center position) of each of the kilns 11,... The column 21 is made of a plate made of, for example, stainless steel having excellent environmental resistance and is coated with anti-reflection coating. A target 22 as an object to be detected is attached. It should be noted that the column 21 may be mounted at the position of the kiln core for the installation location or other reasons. At this time, the mounting error between the kiln core and the kiln core is stored in advance for each kiln, and at the time of absolute position detection described later. The mounting error is corrected to the obtained absolute position.

Each target 22 has a kiln number represented by a binary code 1
Kiln number detection slit represented by / 0 (bright / dark) (7 bits)
And an error detection slit (1 bit) represented by 1/0 (bright / dark) of the odd parity of the kiln number binary-coded for kiln number error detection. It is used to determine the absolute position of the machine 13 and the position of the core.

On the side of the moving machine 13, there is provided, for example, a telescopic base 23 extending from the mobile machine 13 beyond the target 22. A light source 24 such as a fluorescent lamp for irradiating light toward the camera, a camera 25 such as a CCD for receiving irradiation light transmitted from the light source 24 via the target 22 and converting the received light signal level into an electric signal; A hood 26 for preventing disturbance light and dust from the camera 25 is placed.

Further, on the mobile machine 13 side, a width measuring unit which binarizes the electric signal from the camera 25 and measures the light / dark width of a necessary portion in the measurement visual field and judges the light / dark in each bit area. 27, and a kiln processing unit 28 for calculating the position of the mobile machine 13 from the processing result of the width measuring unit 27 and determining the kiln number.

Next, the operation of the apparatus configured as described above will be described. First, the detection of the core will be described with reference to FIG. When the mobile machine 13 moves 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 into a binary signal by the width measuring unit 27. FIG.
FIG. 3 is a diagram illustrating a binary conversion state of the image.

By the way, before detecting the kiln core, it is determined from the received light signal whether or not the target is the target 22 itself, that is, the target 22 to be measured is present in the detection performance A (bit) of the camera 25. It is necessary to determine whether or not. This determination is based on the distance from the rightmost light-dark change point in the detection performance A to the leftmost light-dark change point, that is, the target 2
2 is measured based on whether or not the both end edge widths B (bits) match the predetermined mechanical dimensions of the target 22.

Here, when both end edge widths B coincide with predetermined mechanical dimensions of the target 22, a first bright width C, which is the width of the leftmost bright portion of the detection performance A, is measured. A- (C + B) (1) The final light width D, which is the width of the rightmost light portion in the detection performance A, is calculated based on the following arithmetic expression. Then, these data A to D are sent to the core processing unit 28.

The kiln processing unit 28 uses the first light width C and the final light width D to calculate the displacement E between the center 31 of the measurement visual field of the camera 25 and the center 32 of the target based on the following equation (2). Is calculated.

E = {(C−D) / 2} × resolution (2) Resolution of CCD camera = field width F / detection performance A (3) In this case, the resolution of the CCD camera of the formula (2) (Mm / bit
) Is fixed by the visual field width F (mm) at the focal length R of the design value and the detection performance A (bit) of the CCD camera 25 as in the equation (3).

As a result, E <0: the center 31 of the field of view is shifted to the left from the center 32 of the target. E = 0: The center 31 of the field of view coincides with the center 32 of the target. E> 0: The center 31 of the field of view is the target. It is shifted to the right side from the center 32. That is, the absolute position of the mobile machine 13 can be detected.

Therefore, the remaining distance between the moving machine 13 and the kiln core can be detected based on the amount of the displacement E in which direction and in which direction, so that the moving machine 13 is moved in the direction opposite to the direction of the displacement. Then, the mobile machine 13 can be stopped at the kiln core position, which is the fixed position.

Next, the kiln number detection and the kiln number error detection will be described with reference to FIG. Light source 24 as before
The light radiated from the target through the target is received by the camera 25, and the received light 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, the detection performance A
To determine whether or not its own target 22 exists,
If there is, the position of the first light width C in the detection performance A is detected, and the slit pitch P, which is the mechanical dimension of the target 22, and the expression (3) in the same manner as in the case of kiln core detection. Based on the resolution (mm / bit), the kiln number detecting slits 22a (7 areas) in which the numbers of the kiln number detecting kilns provided on the target 22 are represented in binary numbers, and the kiln number detecting slits 22a (7 areas) are used.
The slit 22b (one area) for detecting the odd number of the kiln number which represents the odd parity of the kiln number expressed in the base number is designated.

Then, it is determined whether or not each area has a slit width S, which is a mechanical dimension, and a bright portion with a resolution (mm / bit) of the same formula (3) as in the case of kiln core detection. The kiln number is checked based on the odd-number bit conversion of the light portion including the slit 22a, and if there is no error, the read kiln number is determined to be correct, and the binarized data of the kiln number detecting slit 22a (7 areas) is obtained. To the kiln processing section 28.

Accordingly, in the kiln processing section 28, the working kiln number is confirmed from the 7-bit binary data sent from the width measuring section 27. According to the kiln core detecting device having such a configuration, the target 22 is installed in each part of each kiln 11,.
Receiving light coming from the light source 24 through the target 22;
Since the absolute position and the core of the mobile machine 13 are detected by a predetermined calculation from the target width and the light width on both sides of the target, the mobile machine 13 can be automatically set to the core position. Moreover, by simply installing the target 22 on the kiln side and using a target 22 having excellent environmental resistance, it is possible to sufficiently cope with a bad environment and to stably contribute to detecting the core of the kiln over a long period of time. it can.

In the above description, when the absolute position and the core of the mobile machine 13 are detected, the measured value of the edge width at both ends and the measured value of the first lightness width are taken in, and the amount of deviation (bit) is obtained. The shift amount (mm) is obtained by converting the value into mm based on the fixed resolution value K (mm / bit). Further, when detecting the kiln number and an error of the kiln number, the measured value of the edge width at both ends and the measured value of the first bright width are taken, and the fixed resolution value K (mm / bit) and the fixed slit area width value (mm) are obtained. And the slit pitch and slit width (m
m) is converted to bit.

Therefore, if there is no change in the relative positional relationship between the moving machine and the kiln, the moving machine can be accurately set at the kiln center position. However, in reality, when a mobile machine runs on rails, it bends rails, changes in rail height, torsion of the car body, contact between wheels and rails, wear of wheel flanges,
The relative position between the car body and the kiln is constantly changing due to the shaking, vibration, etc. of the car body. Therefore, when the positional relationship between the moving machine and the kiln changes, the focal length changes, and a large error occurs when the resolution of the CCD camera changes.

When detecting the core, the amount of displacement (bit)
An error occurs when is changed in the unit of mm, and a correct shift amount cannot be obtained. Furthermore, even when detecting the kiln number and the kiln number error, an error occurs when converting the pitch of the slit and the width of the slit from mm to bit, and it becomes impossible to specify an accurate area and judge light and dark, The error detection signal of the kiln number cannot be input.

Therefore, in the present invention, even if the focal length changes due to a change in the positional relationship between the moving machine and the kiln, the resolution at the focal length at that time is corrected to reduce the occurrence of detection errors, erroneous detection, and a decrease in the detection probability. It is intended to be eliminated theoretically.

FIG. 4 is a functional block diagram of the kiln core processing section 28. FIG. 4A shows an example of the configuration of the shift amount detecting means. The measured values of the edge widths at both ends and the first bright width measured by the width measuring section 27 are input, and the shift amount is determined based on these values. A shift amount calculation processing unit 28-1 for calculating (bit),
The measured values of the edge widths at both ends measured by the width measuring unit 27 are inputted, and the target width W of the mechanical dimensions of the target 22 is obtained.
The resolution calculation processing unit 28-2 for obtaining the resolution at the focal length (mm) at the time of measurement from equation (4) from equation (4) and the deviation amount (bit) obtained by the deviation amount calculation processing unit 28-1 Based on the resolution processed by the arithmetic processing unit 28-2, bi
It comprises a shift amount conversion processing unit 28-3 that changes from t to mm.

Resolution (mm / bit) = Target width W / Both edges width B (4) In such a deviation detecting means, the resolution calculation processing unit 28-2 first determines the resolution by the above equation (4). After asking,
Measure the first light width, which is the width of the rightmost light part in the field of view,
The measured value of the first bright width and the measured value of the edge width at both ends are input to the shift amount calculating unit 28-1 to calculate the final bright width by the equation (5), and the field of view of the CCD camera by the equation (6). Calculate the amount of deviation between the center and the target center.

Final bright width D = Detection performance A− (First bright width C + Both end edge widths B)... (5) Deviation E = {(First bright width C−Final bright width D / 2} × Resolution. (6) In this case, when the shift amount (bit) obtained by the shift amount calculation processing unit 28-1 is input to the shift amount conversion processing unit 28-3, the shift amount (bit) is first resolved. Arithmetic processing unit 28-2
Is converted to the displacement (mm) according to the resolution obtained in and output.

Accordingly, even if the positional relationship between the moving machine and the kiln changes, the remaining distance between the moving machine and the core of the kiln can be detected in a state corrected to the resolution at the focal length at that time, so that a detection error occurs. And false detection and a decrease in the detection probability can be theoretically eliminated.

FIG. 4B shows an example of the configuration of the kiln number and the kiln number error detecting means for detecting the kiln number and the kiln number error. And the first bright width measurement value are input, the slit area width calculation processing unit 28-4 for calculating the slit and the area width based on these, the both edge width measurement values are input, and when the focal length changes, And a memory 28-6 storing a slit and a fixed area width value.

In such a kiln number and kiln number error detecting means, when the slit area width is calculated by the slit area width calculation processing section 28-4, the resolution calculated by the resolution calculation processing section 28-5 and the memory 28- The slit area width value (bit) is obtained and output based on the slit and area width fixed values stored in 7. In other words, in the slit area width calculation processing unit 28-4, each of the kilns for detecting the kiln number provided on the target 22 based on the both end edge widths measured by calculating the ratio of the mechanical width of the target width to the slit pitch width. Slits 22a (seven places) in which the numbers are expressed in binary numbers,
The position (area) in the field of view of the slit 22b (one location) expressing the odd parity of the kiln number expressed in binary for error detection of the kiln number is calculated and designated.

The target width W is set in each area.
Based on both end edge widths B measured by calculating the ratio of the mechanical dimension of the slit width P to the slit width P, a reference bright part width value for slit presence / absence determination is calculated, and the slit presence / absence determination for that area is performed.

Therefore, based on the determination result, the kiln number is checked based on the parity, and if there is no error, the read kiln number is adopted as a positive value. It is possible to check the work kiln number with high reliability without causing a decrease in the temperature.

In the above embodiment, the target having the slit is used.
It is not necessary to provide a slit. Also, the present invention is described above,
In addition, it is needless to say that the present invention is not limited to the embodiment shown in the drawings, and various modifications can be made without departing from the scope of the invention.

[0044]

As described above, according to the present invention, the occurrence of detection errors, erroneous detection, and a reduction in detection probability due to a change in resolution due to a change in the positional relationship between the furnace moving machine and the furnace are theoretically eliminated. Thus, the absolute position of the moving machine and the position of the furnace core can always be accurately obtained, and thus a furnace core detecting device capable of reliably stopping the furnace moving machine at a fixed position can be provided.

[Brief description of the drawings]

FIG. 1 shows a configuration of an embodiment of a furnace core detecting device according to the present invention, in which (a) is a plan view and (b) is a front view.

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

FIG. 3 is an explanatory diagram for detecting a kiln number and a kiln number error in the embodiment.

FIGS. 4A and 4B show functional blocks of a kiln core processing unit which is a main part of the present invention, wherein FIG. 4A is a diagram showing a configuration example of a deviation amount detecting means, and FIG. 4B is a kiln number and a kiln number error detecting means; The figure which shows the example of a structure of.

FIG. 5 is a schematic configuration diagram of a conventional general coke oven facility.

[Explanation of symbols]

11 ... kiln, 13 ... mobile machine, 22 ... target,
23 ... stand, 24 ... light source, 25 ... CCD camera,
26 hood, 27 width measuring unit, 28 core processing unit, 28-1 shift amount processing unit, 28-2 resolution processing unit, 28-3 shift amount conversion process Part, 28-
4 slit area width calculation processing unit, 28-5 resolution processing unit, 28-6 memory.

Continuation of the front page (72) Inventor Yasushi Ito 1 Toshiba-cho, Fuchu-shi, Tokyo Inside the Toshiba Fuchu factory (56) References JP-A-3-43491 (JP, A) (58) Fields investigated (Int) .Cl. ⁷ , DB name) G01B 11/00-11/30 C10B 41/00

Claims (3)

(57) [Claims] An object to be detected installed in each kiln of a coke oven, a light source attached to a coke oven moving machine for irradiating light from the back side of the object to be detected, and the object to be detected installed in a coke oven moving machine A light receiving means for receiving the irradiated light which has passed unobstructed by the body, detecting the light receiving position thereof, and converting the light into an electric signal; and an output signal of the light receiving detecting means being taken in, and a kiln based on the light receiving position. Kiln core detecting means for detecting the core;
Correction means for obtaining a change in the resolution of the kiln core detecting means due to a change in the focal length of the light receiving detecting means from the mechanical dimensions of the object to be detected, and correcting the kiln obtained by the kiln core detecting means. A kiln core detecting device, characterized in that: 2. A detection target which is installed in each kiln of a coke oven and has a kiln number detection slit formed by coding a kiln number of each kiln; A light source for irradiating light, and light receiving detection means for receiving irradiation light, which is installed in the coke oven moving machine and has passed through each slit of the object to be detected, and converts it into an electric signal,
An output signal of the light receiving detection means is taken in, a kiln number detecting means for detecting a kiln number based on the presence or absence and width of the irradiation light having passed through each slit, and the light receiving amount based on the mechanical dimensions of the object to be detected. A kiln core detection device, comprising: a correction unit that obtains a change in resolution of the kiln number detection unit due to a change in the focal length of the detection unit and corrects the presence or absence and width of light reception of the kiln number detection unit. 3. A detection object which is installed in each kiln of a coke oven and has a kiln number detecting slit and an error detecting slit formed by encoding the kiln number of each kiln; A light source that irradiates light from the back side of the detection object, and receives irradiation light that has been installed in the coke oven moving machine and that has passed through the kiln number detection slit and the error detection slit of the object to be detected and converts it into an electric signal. Light-receiving detecting means, kiln-number detecting means for detecting the kiln number based on the presence or absence and the width of the light received by the output signal of the light-receiving detecting means and passing through the kiln-number detecting slit, and the light-receiving detection Kiln number error detecting means for detecting an error in the kiln number based on the presence or absence and width of the irradiation light having passed through the error detecting slit when the output signal of the means is taken, and from the mechanical dimensions of the object to be detected. The light detection Correcting means for determining a change in the resolution of the kiln number detecting means and the kiln number error detecting means due to a change in the focal length of the output means, and correcting the presence or absence and width of light reception of the kiln number detecting means and the kiln number error detecting means. A kiln core detection device, comprising: