WO2012104921A1 - 帯状体の幅方向端部位置測定装置、帯状体の幅方向中心位置測定装置及びマイクロ波散乱板 - Google Patents
帯状体の幅方向端部位置測定装置、帯状体の幅方向中心位置測定装置及びマイクロ波散乱板 Download PDFInfo
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- WO2012104921A1 WO2012104921A1 PCT/JP2011/000618 JP2011000618W WO2012104921A1 WO 2012104921 A1 WO2012104921 A1 WO 2012104921A1 JP 2011000618 W JP2011000618 W JP 2011000618W WO 2012104921 A1 WO2012104921 A1 WO 2012104921A1
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- reflected
- position measuring
- measuring device
- width direction
- scattering plate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
- G01B15/04—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring contours or curvatures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/06—Systems determining position data of a target
- G01S13/08—Systems for measuring distance only
- G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
- G01S13/325—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of coded signals, e.g. P.S.K. signals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
Definitions
- the present invention relates to a widthwise end position measuring device for a strip, a center position measuring device for a widthwise direction of the strip, and a microwave scattering plate.
- width direction end position measuring devices and width direction center position measuring devices optical devices, pneumatic devices, electrostatic capacitance devices, and the like are used.
- these devices are susceptible to environmental influences such as steam and dust (optical type), have low detection accuracy (pneumatic type), and have low stability (capacitance type) Etc.).
- the applicant applied a band-shaped end position measuring device for a band-shaped body using an electromagnetic wave and a width-direction center position measuring apparatus for the band-shaped body (hereinafter also referred to as an electromagnetic device).
- an electromagnetic device Developed and put into practical use (Patent Document 1).
- the electromagnetic wave type device radiates an electromagnetic wave toward the end portion of the belt and measures the distance to the end portion by detecting the reflected electromagnetic wave.
- the electromagnetic wave type device is advantageous in that it is not easily affected by the environment such as steam and dust, has high detection accuracy, and high stability. Because of such advantages, the electromagnetic wave type apparatus can be used stably even in a severe environment such as in a heat treatment furnace.
- an electromagnetic wave absorber may be used to prevent harmful effects such as noise caused by electromagnetic waves such as microwaves (for example, Patent Document 2).
- the electromagnetic wave absorber is inferior in environmental resistance such as heat resistance and cannot be used, for example, in a high-temperature furnace.
- the width direction end position measuring device of the strip using the electromagnetic wave and the width direction center position measuring device using the electromagnetic wave which can ensure sufficient measurement accuracy in a closed space of a predetermined dimension or less such as in a narrow furnace.
- an electromagnetic wave removing member excellent in environmental resistance that can replace an electromagnetic wave absorber.
- a width direction end position measuring device is a width direction end position measuring device that measures the position of a width direction end of a strip that passes through a closed space surrounded by a plurality of surfaces. is there.
- the width direction end position measuring device uses an antenna that radiates an electromagnetic wave toward the width direction end and receives the electromagnetic wave reflected by the width direction end, and information on the reflected electromagnetic wave.
- a signal processing unit for determining the position of the end in the width direction, and a scattering plate for scattering the incident electromagnetic wave, wherein the antenna is opposed to the end in the width direction for determining the position.
- the scattering plate is installed on a second surface opposite to the first surface.
- the width direction end position measuring apparatus includes a scattering plate on a surface of the closed space facing the surface where the antenna is installed, and is thus radiated from the antenna, reflected by the facing surface, and returned to the antenna again. Electromagnetic waves can be greatly reduced. Therefore, according to the width direction end position measuring apparatus according to this aspect, noise caused by reflected electromagnetic waves in a closed space smaller than a predetermined size is greatly increased over a wide range of the distance between the surface on which the antenna is installed and the end of the measurement target. And a sufficient measurement accuracy can be ensured in a closed space of a predetermined dimension or less.
- the scattering plate is formed of a corrugated plate.
- the electromagnetic wave that has reached the scattering plate is reflected in a direction different from the direction in which the microwave incident on the flat plate disposed at the same position as the scattering plate is reflected by the side surface of the wave plate.
- the microwaves traveling in the direction in which the microwaves incident on the flat plate arranged at the same position as the scattering plate are regularly reflected can be greatly reduced. Therefore, noise due to the reflected electromagnetic wave of the measuring device can be greatly reduced.
- the scattering plate formed from a corrugated plate can be easily manufactured by processing a metal such as steel.
- the scattering plate is formed from a collection of weight-shaped convex portions or concave portions arranged on a flat plate.
- the electromagnetic wave that has reached the scattering plate is uniformly scattered around the cone-shaped convex portion or the concave portion, so that the microwave incident on the flat plate arranged at the same position as the scattering plate is Microwaves traveling in the direction of regular reflection can be greatly reduced. Therefore, noise due to the reflected electromagnetic wave of the measuring device can be greatly reduced.
- the width-direction center position measuring device is a width-direction center position measuring device that measures the center position in the width direction of a strip that passes through a closed space surrounded by a plurality of surfaces.
- the width direction center position measuring apparatus includes a first antenna that radiates electromagnetic waves toward one width direction end and receives the electromagnetic waves reflected by the one width direction end, and the other width direction.
- a second antenna that radiates electromagnetic waves toward the end and receives electromagnetic waves reflected by the other widthwise end, and using the information of the reflected electromagnetic waves, the width direction of the one and the other A signal processing unit that obtains the center position in the width direction of the band by obtaining the position of the end portion, and a scattering plate that scatters the incident electromagnetic wave, the first antenna facing the one end portion in the width direction
- the second antenna is installed on the second surface of the furnace wall closed space, and is disposed on the first surface of the furnace wall closed space, the second antenna is opposed to the other widthwise end, and the scattering plate is , Around the first antenna on the first surface and the second antenna on the second surface. It is installed around the burner.
- the second antenna is installed around the second antenna on the second surface facing the first surface where the first antenna is installed in the closed space. Since the scattering plate is provided around the first antenna on the first surface opposite to the second surface, the first and second antennas radiate from the first surface and are reflected by the opposing surface and again. The electromagnetic wave returning to the antenna 2 can be greatly reduced. Therefore, according to the width direction end position measuring apparatus according to this aspect, in a closed space smaller than a predetermined dimension over a wide range of the distance between the surface on which the first and second antennas are installed and the end of the measurement target. Noise due to reflected electromagnetic waves can be greatly reduced, and sufficient measurement accuracy can be ensured in a closed space having a predetermined dimension or less.
- the scattering plate according to the third aspect of the present invention is a scattering plate that scatters incident microwaves, and is formed of a wave plate.
- the scattering plate of this aspect it is possible to significantly reduce the microwave that travels in the direction in which the microwave incident on the flat plate disposed at the same position as the scattering plate is regularly reflected. Moreover, since the scattering plate of this aspect can be manufactured from a metal, it is excellent in environmental resistance including heat resistance.
- the length of the side surface of the corrugated plate is 0.5 times or more the wavelength of the microwave.
- microwave scattering is performed efficiently. If the length of the side surface of the corrugated plate is less than 0.5 times the wavelength of the microwave, there is a possibility that the scattering effect due to the reflection of the side surface cannot be obtained.
- the incident angle of the incident microwave with respect to the surface of the corrugated plate is in the range of 20 degrees to 45 degrees.
- the microwave incident on the surface of the corrugated plate is reflected in a direction completely different from the traveling direction of the incident microwave, so that the microwave is efficiently scattered.
- the scattering plate according to the fourth aspect of the present invention is a scattering plate that scatters incident microwaves, and is formed of a collection of weight-like convex portions or concave portions arranged on a flat plate.
- the scattering plate of this aspect it is possible to significantly reduce the microwave that travels in the direction in which the microwave incident on the flat plate disposed at the same position as the scattering plate is regularly reflected. Moreover, since the scattering plate of this aspect can be manufactured from a metal, it is excellent in environmental resistance including heat resistance.
- the length of the side surface of the cone is not less than 0.5 times the wavelength of the microwave.
- microwave scattering is performed efficiently. If the length of the side surface of the corrugated plate is less than 0.5 times the wavelength of the microwave, there is a possibility that the scattering effect due to the reflection of the side surface cannot be obtained.
- FIG. 7 the intensity of the electromagnetic wave radiated by the width direction end position measuring device of the band according to the embodiment of the present invention, reflected by a flat plate having an inclination angle of 10 degrees, and received by the device is shown.
- FIG. 7 the intensity of the electromagnetic wave radiated by the widthwise end position measuring device of the belt-like body according to the embodiment of the present invention, reflected by a flat plate having an inclination angle of 15 degrees, and received by the device is shown.
- FIG. 7 the intensity of the electromagnetic wave radiated by the widthwise end position measuring device of the band according to the embodiment of the present invention, reflected by the flat plate having an inclination angle of 20 degrees, and received by the device is shown.
- FIG. 7 the intensity of the electromagnetic wave radiated by the widthwise end position measuring device of the strip according to the embodiment of the present invention, reflected by a flat plate having an inclination angle of 35 degrees, and received by the device is shown.
- FIG. 7 the intensity of the electromagnetic wave radiated by the width direction end position measuring device of the strip according to the embodiment of the present invention, reflected by the flat plate having an inclination angle of 40 degrees, and received by the device is shown.
- FIG. 7 the intensity of the electromagnetic wave radiated by the width direction end position measuring device of the strip according to the embodiment of the present invention, reflected by the flat plate having the inclination angle of 45 degrees, and received by the device is shown.
- FIG. It is a top view of the scattering plate which arranged the cone-shaped convex part on the flat plate.
- FIG. 9 It is a perspective view of the scattering plate which arranged the cone-shaped convex part and the recessed part on the flat plate, respectively.
- the width direction end position measuring device of the band according to one embodiment of the present invention is reflected by the scattering plate formed from the collection of conical convex portions and is received by the device. It is a figure which shows the intensity
- FIG. 14 it is a figure which shows the edge part measurement result of the width direction edge part position measuring apparatus of the strip
- FIG. 14 it is a figure which shows the edge part measurement result of the width direction edge part position measuring apparatus of the strip
- FIG. 14 it is a figure which shows the edge part measurement result of the width direction edge part position measuring apparatus of the strip
- FIG. 14 shows the edge position measurement result of the width direction edge position measuring apparatus of the strip
- FIG. It is a figure which shows the structure of the width direction center position measuring apparatus of the strip
- FIG. 1 is a diagram for explaining a width direction center position measuring device of a belt-like body. Since the scattering plate is not shown in FIG. 1, the electromagnetic wave type device of FIG. 1 is the same as that described in Patent Document 1. The scattering plate will be described in detail later.
- the cold-rolled steel plate 201 that is a band-shaped body passes between the furnace walls 301R and 301L of the continuous annealing furnace that is a closed space.
- the closed space is a space formed by a plurality of surfaces surrounding the periphery of the belt-like body 201 over a certain distance in the longitudinal direction of the belt-like body 201.
- the closed space has an opening as an entrance and an exit of the strip.
- the left-right direction in the figure indicates the width direction of the cold-rolled steel sheet 201, and the cold-rolled steel sheet 201 travels from the front side to the rear side of the page.
- a microwave transmitting antenna 101R and a microwave receiving antenna 103R are provided on the right furnace wall 301R, and the microwave radiated from the microwave transmitting antenna 101R is reflected at the right end of the cold-rolled steel plate 201, and the reflected wave Is received by the microwave receiving antenna 103R.
- the left furnace wall 301L is provided with a microwave transmitting antenna 101L and a microwave receiving antenna 103L, and the microwave radiated from the microwave transmitting antenna 101L is reflected at the left end of the cold-rolled steel plate 201. The reflected wave is received by the microwave receiving antenna 103L.
- the distance to the object that reflects the microwave is t ⁇ c / 2 Is required.
- the microwave transmitting antenna 101R and the microwave receiving antenna 103R are connected to the right end position signal processing unit 105R.
- the right end position signal processing unit 105R forms a microwave and transmits it to the microwave transmitting antenna 101R, and converts the microwave received by the microwave receiving antenna 103R into an electric signal, and processes the microwave.
- the time t from transmission to reception of the reflected wave is measured, and from this, the distance to the right end of the cold rolled steel sheet 201 is calculated, and the right end position of the cold rolled steel sheet 201 is measured.
- the microwave transmission antenna 101L and the microwave reception antenna 103L are connected to the left end position signal processing unit 105L.
- the left end position signal processing unit 105L forms a microwave and transmits it to the microwave transmitting antenna 101L, and converts the microwave received by the microwave receiving antenna 103L into an electric signal, and processes the microwave.
- the time t from transmission to reception of the reflected wave is measured, and from this, the distance to the left end of the cold rolled steel sheet 201 is calculated, and the position of the left end of the cold rolled steel sheet 201 is measured.
- the signals of the right end position signal processing unit 105R and the left end position signal processing unit 105L are connected to the band center position signal processing section 107, and the band center position signal processing section 107 is connected to the right end section.
- the center position in the width direction of the cold-rolled steel plate 201 is detected as the center point between the position and the left end position.
- the right end position signal processing unit 105R, the left end position signal processing unit 105L, and the belt-like body center position signal processing unit 107 are collectively referred to as a signal processing unit.
- the right or left transmitting antenna, the receiving antenna, and the end position signal processing unit form a width-direction end position measuring device for the band-shaped body. And can function independently to measure the right or left end position of the strip.
- FIG. 2 is a diagram illustrating a configuration of a signal processing unit for the left end portion of the signal processing unit of the widthwise center position measuring apparatus for the band according to the present embodiment.
- the description of FIG. 2 and the description thereof is the same as the content of Patent Document 1.
- the clock generator 501 generates a clock signal having a frequency f1.
- This clock signal enters the M-sequence signal generator 505 and is converted into an M-sequence pseudo-random signal.
- a pseudo-random signal is a signal that has periodicity when viewed in a long time, but can be regarded as a random signal when viewed in a short time.
- ”And“ 0 ” are known as typical pseudo-random signals, and an example of the formation method is described in Japanese Patent Publication No. 6-16080.
- N be the wave number of pulses included in one cycle of the M-sequence signal.
- the output M1 of the M-sequence signal generator 505 is branched into two, one enters the power amplifier 513, is power amplified, and is radiated as a microwave from the transmitting antenna 101L.
- the clock generator 503 generates a clock signal having a frequency f2.
- the frequency f2 is slightly lower than the frequency f1.
- This clock signal enters the M-sequence signal generator 507 and is converted into an M-sequence pseudo-random signal. Since the M-sequence signal generator 505 and the M-sequence signal generator 507 are configured by exactly the same circuit, the repetition pattern of the output of the M-sequence signal generator 505 and the output of the M-sequence signal generator 507 is the same. Only the frequency will be different.
- the output M2 of the M-sequence signal generator 507 is branched into two, and one enters the multiplier 509 and is multiplied by the output M1 of the M-sequence signal generator 505.
- the output of the multiplier 509 enters the low pass filter 517, and the high frequency component is removed.
- the output of the low-pass filter 517 is a triangular wave.
- the timing at which the output of the low-pass filter 517 reaches the maximum value is detected by the maximum value detection circuit 521, a pulse is generated at this timing, and this is used as a reference signal.
- the microwave reflected at the end of the cold rolled steel plate 201 is received by the receiving antenna 103L and amplified by the power amplifier 515.
- Output signal M 1 ′ of power amplifier 515 enters multiplier 511 and is multiplied with output signal M 2 of M-sequence signal generator 507.
- the output of the multiplier 511 enters a low-pass filter 519, and a high frequency component is removed.
- the output of the low-pass filter 519 is a triangular wave.
- the timing at which the output of the low-pass filter 519 reaches the maximum value is detected by the maximum value detection circuit 523, a pulse is generated at this timing, and this is used as a detection signal.
- ⁇ ⁇ f2 ⁇ ⁇ f1 ⁇ t ⁇ f1
- ⁇ t (f1 ⁇ f2) ⁇ ⁇ / f1 (2) Is obtained.
- the time difference detection circuit 525 performs this calculation to calculate ⁇ t.
- the distance x between the transmitting antenna 101L, the receiving antenna 103L and the end of the cold-rolled steel plate 201 is as follows.
- x (f1 ⁇ f2) ⁇ ⁇ ⁇ c / (2 ⁇ f1) (3) From this, the position of the end of the cold-rolled steel plate 201 is known.
- the distance calculation circuit 527 performs this calculation to calculate the distance x.
- the microwave from the microwave transmission antenna 101R in FIG. 1 is detected by the microwave reception antenna 103L, or when the microwave from the microwave transmission antenna 101L is detected by the microwave reception antenna 103R, the right side
- the M-sequence waveform used in the end position measuring device 105R different from the M-sequence pattern used in the left-side end position measuring device 105L, detection errors due to mixing of both signals are prevented. be able to.
- FIG. 3 is a diagram showing a widthwise end position measuring apparatus for a band-shaped body according to an embodiment of the present invention installed in a closed space.
- the closed space is described as a furnace, but the closed space may be a throat-shaped passage other than the furnace.
- the electromagnetic wave radiated from the transmitting antenna 101L installed on the furnace wall surface 301L is reflected by the end of the strip 201 and received by the receiving antenna 103L.
- the transmitting antenna 101L and the receiving antenna 103L are installed such that the electric field surface of the electromagnetic wave is parallel to the surface of the strip 201. Since the signal reflected at the end of the strip 201 is a signal used to measure the distance to the end of the strip 201, it is represented by S in FIG.
- part of the electromagnetic waves radiated from the transmitting antenna 101L reaches the furnace wall surface 301R facing the furnace wall surface 301L, is reflected by the furnace wall surface 301R, and is received by the receiving antenna 103L.
- the signal reflected on the furnace wall surface 301R is noise when measuring the distance to the end of the strip 201 using the signal reflected on the end of the strip 201, and is represented by N in FIG. .
- N the number of bits
- N the number of bits
- the free space propagation loss T of the reflected power of the electromagnetic wave can be expressed by the following equation.
- the unit of the free space propagation loss T is dB
- D is the propagation distance
- ⁇ is the wavelength of the electromagnetic wave.
- the free space propagation loss T of the reflected power of the electromagnetic wave increases in proportion to the square of the propagation distance. Therefore, when the propagation distance is large, noise due to the reflected electromagnetic wave is not a problem.
- FIG. 4 is a diagram showing a belt-like body that passes through a furnace that is a closed space.
- FIG. 4 is a view showing a cross section perpendicular to the surface of the belt-like body.
- the furnace includes furnace wall surfaces 301T and 301B parallel to the surface of the strip 201 and furnace wall surfaces 301L and 301R perpendicular to the surface of the strip 201.
- the length of the furnace wall surfaces 301T and 301B in the direction parallel to the strip surface is A
- the length of the furnace wall surfaces 301L and 301R in the direction perpendicular to the belt surface is B.
- A is smaller than 2000 mm or B is smaller than 1000 mm
- the influence of reflection of electromagnetic waves on the furnace wall surface (surface of the closed space) cannot be ignored.
- the reason why the influence of noise increases when A becomes smaller than a predetermined value has been described with reference to FIG.
- the reason why the influence of noise increases when B becomes smaller than a predetermined value will be described later.
- FIG. 5 is a diagram showing a strip-shaped body in a furnace and a width-direction end position measuring device for the strip-shaped body according to an embodiment of the present invention installed in the furnace.
- FIG. 5 is a view showing a cross section perpendicular to the surface of the belt-like body.
- the transmission range of the transmission antenna 101L installed on the furnace wall surface 301L is indicated by T.
- the receiving range of the receiving antenna 103L installed on the furnace wall surface 301L is indicated by R.
- the range where the transmission range T and the reception range R overlap is the detection range D of the width direction end position measuring device of the strip.
- FIG. 6 is a view for explaining a detection range of the widthwise end position measuring device for the band-shaped body according to the embodiment of the present invention installed in the furnace.
- the transmission range and the reception range are about 23 degrees.
- the width in the vertical direction of the detection range is about 700 mm.
- FIG. 7 is a diagram for explaining an experiment for examining the influence of the electromagnetic wave radiated by the band-shaped end position measuring device of the strip and reflected by the flat plate according to the embodiment of the present invention on the device.
- the electromagnetic wave reflected by the flat plate corresponds to noise as described with reference to FIG. 4, and the smaller the intensity, the better.
- the flat plate 401 is a square having a side of 600 mm, and is first arranged at a distance of 500 mm from the transmission / reception antenna so as to be parallel to the opening surface of the transmission / reception antenna.
- the reception antenna 103 detects the electromagnetic wave radiated from the transmission antenna 101 of the width direction end position measuring apparatus and reflected by the flat plate 401.
- the flat plate 401 is inclined with respect to a plane parallel to the opening surface of the transmission / reception antenna, and in the inclined state, from the transmission antenna 101 of the width direction end position measuring apparatus.
- the electromagnetic wave radiated and reflected by the flat plate 401 is detected by the receiving antenna 103.
- the detection is performed in a state where the flat plate 401 is inclined at nine inclination angles at intervals of 5 degrees from 5 degrees to 45 degrees.
- the surface of the flat plate 401 when the inclination angle is 0 degree is referred to as a reference surface.
- the reference plane is parallel to the opening surface of the transmission / reception antenna.
- FIG. 8A shows an electromagnetic wave that is radiated by the width direction end position measuring device of the belt-like body according to an embodiment of the present invention, reflected by a flat plate having an inclination angle of 5 degrees, and received by the device in the experiment described in FIG. It is a figure which shows the intensity
- the horizontal axis represents the carrier frequency
- the vertical axis represents the intensity of the received electromagnetic wave.
- strength of the electromagnetic waves reflected by the flat plate of each inclination angle is represented by a solid line
- the intensity of the electromagnetic waves reflected by the flat plate having an inclination angle of 0 degrees is represented by a dotted line as a reference.
- the intensity in dB shown together with the frequency in each figure shows the intensity of the electromagnetic wave at that frequency reflected by the flat plate of each inclination angle.
- the intensity of the electromagnetic wave reflected by the flat plate having the inclination angle of 5 degrees is approximately 1.5 dB smaller than the intensity of the electromagnetic wave reflected by the flat plate having the inclination angle of 0 degree.
- FIG. 8B shows an electromagnetic wave radiated by the width direction end position measuring device of the band according to the embodiment of the present invention, reflected by a flat plate having an inclination angle of 10 degrees, and received by the device in the experiment described in FIG. It is a figure which shows the intensity
- the intensity of the electromagnetic wave reflected by the flat plate having the inclination angle of 10 degrees is smaller than the intensity of the electromagnetic wave reflected by the flat plate having the inclination angle of 0 degree by about 3.9 dB.
- FIG. 8C shows an electromagnetic wave radiated by the band-direction end position measuring device of the band according to the embodiment of the present invention, reflected by a flat plate having an inclination angle of 15 degrees, and received by the device in the experiment described in FIG. It is a figure which shows the intensity
- the intensity of the electromagnetic wave reflected by the flat plate with the inclination angle of 15 degrees is approximately 7.0 dB smaller than the intensity of the electromagnetic wave reflected by the flat plate with the inclination angle of 0 degrees.
- FIG. 8D is an electromagnetic wave radiated by the band-direction end position measuring device of the band according to the embodiment of the present invention, reflected by a flat plate having an inclination angle of 20 degrees, and received by the device in the experiment described with reference to FIG. It is a figure which shows the intensity
- the intensity of the electromagnetic wave reflected by the flat plate with the inclination angle of 20 degrees is approximately 15.2 dB smaller than the intensity of the electromagnetic wave reflected by the flat plate with the inclination angle of 0 degree.
- FIG. 8E shows an electromagnetic wave that is radiated by the width direction end position measuring device of the belt-like body according to the embodiment of the present invention, reflected by the flat plate having an inclination angle of 25 degrees, and received by the device in the experiment described in FIG. It is a figure which shows the intensity
- the intensity of the electromagnetic wave reflected by the flat plate with the inclination angle of 25 degrees is approximately 21.4 dB smaller than the intensity of the electromagnetic wave reflected by the flat plate with the inclination angle of 0 degree.
- FIG. 8F shows an electromagnetic wave radiated by the band-direction edge position measuring device according to an embodiment of the present invention, reflected by a flat plate with an inclination angle of 30 degrees, and received by the device in the experiment described in FIG. It is a figure which shows the intensity
- the intensity of the electromagnetic wave reflected by the flat plate with an inclination angle of 30 degrees is approximately 22.7 dB smaller than the intensity of the electromagnetic wave reflected by the flat plate with an inclination angle of 0 degree.
- FIG. 8G shows an electromagnetic wave radiated by the width direction end position measuring device of the band according to the embodiment of the present invention, reflected by a flat plate having an inclination angle of 35 degrees, and received by the device in the experiment described in FIG. It is a figure which shows the intensity
- the intensity of the electromagnetic wave reflected by the flat plate having the inclination angle of 35 degrees is about 33.5 dB smaller than the intensity of the electromagnetic wave reflected by the flat plate having the inclination angle of 0 degree.
- FIG. 8H shows an electromagnetic wave radiated by the band-direction end position measuring device of the strip according to the embodiment of the present invention, reflected by a flat plate having an inclination angle of 40 degrees, and received by the device in the experiment described in FIG. It is a figure which shows the intensity
- the intensity of the electromagnetic wave reflected by the flat plate with the inclination angle of 40 degrees is smaller than the intensity of the electromagnetic wave reflected by the flat plate with the inclination angle of 0 degree by about 23.9 dB.
- FIG. 8I shows an electromagnetic wave radiated by the width direction end position measuring device of the band according to an embodiment of the present invention, reflected by a flat plate having an inclination angle of 45 degrees, and received by the device in the experiment described in FIG. It is a figure which shows the intensity
- the intensity of the electromagnetic wave reflected by the flat plate with the inclination angle of 45 degrees is approximately 18.8 dB smaller than the intensity of the electromagnetic wave reflected by the flat plate with the inclination angle of 0 degree.
- the intensity of the electromagnetic wave corresponding to the noise reflected by the flat plate 401 and received by the receiving antenna 103 is reduced when the inclination angle is 20 degrees to 45 degrees.
- FIG. 9 illustrates an experiment for investigating the influence of an electromagnetic wave radiated by a widthwise end position measuring device of a strip according to an embodiment of the present invention and reflected by a scattering plate formed from a corrugated plate on the device.
- FIG. 9A is a diagram showing the arrangement of the transmission / reception antenna and the scattering plate 111A of the widthwise end position measuring device of the belt-like body.
- Scattering plate 111A having a corrugated plate on the surface is a square with a side of 600 mm, and is arranged at a distance of 500 mm from the transmitting / receiving antenna and parallel to the opening surface of the transmitting / receiving antenna.
- a scattering plate refers to a plate that reflects or scatters incident electromagnetic waves in a direction different from the direction of regular reflection when the plate is flat. In this state, an electromagnetic wave radiated from the transmitting antenna of the width direction end position measuring device and reflected by the plate 111A having a corrugated plate on the surface is detected by the receiving antenna.
- the dimension of the scattering plate 111A substantially corresponds to the detection range of the transmission / reception antenna shown in FIG.
- FIG. 9B is a view showing a cross section of the corrugated plate of the scattering plate 111A perpendicular to the wave ridge and valley directions.
- the inclination angle of the side surface of the corrugated sheet with respect to the bottom surface is preferably in the range of 20 degrees to 45 degrees.
- the inclination angle with respect to the bottom surface of the side surface of the corrugated plate was set to 30 degrees.
- the scattering plate 111A is manufactured by processing a metal such as steel.
- the length of the side surface S of the corrugated plate may be 0.5 times or more of the wavelength corresponding to the carrier frequency.
- the length of the side surface of the corrugated sheet refers to the distance between adjacent ridges and valleys in a direction perpendicular to the direction of the wave ridge or valley of the corrugated sheet. If the length of the side surface S is less than 0.5 times the wavelength corresponding to the carrier frequency, the scattering effect due to the side surface reflection may not be obtained. If the carrier frequency is 10 GHz, the wavelength is 30 mm, and the length of the side surface S is 15 mm or more.
- FIG. 9 (c) is a diagram for explaining the reflection of electromagnetic waves in the direction perpendicular to the opening surface of the transmitting / receiving antenna by the corrugated plate shown in FIG. 9 (b).
- the electromagnetic wave in the direction perpendicular to the opening surface of the transmission / reception antenna is reflected on the surface of the corrugated plate at an angle of 60 degrees with respect to the direction.
- FIG. 10 shows the influence of the electromagnetic wave radiated by the widthwise end position measuring device of the belt-like body according to the embodiment of the present invention and reflected by the scattering plate formed from the collection of conical convex portions on the device. It is a figure for demonstrating experiment.
- FIG. 10A is a diagram showing the arrangement of the transmitting and receiving antennas and the scattering plate 111B of the widthwise end position measuring device of the band-shaped body.
- the scattering plate 111B having a conical convex portion on the surface is a square having a side of 600 mm, and is arranged at a distance of 500 mm from the transmission / reception antenna so as to be parallel to the opening surface of the transmission / reception antenna.
- an electromagnetic wave radiated from the transmitting antenna of the width direction end position measuring apparatus and reflected by the scattering plate 111B having a conical convex portion on the surface is detected by the receiving antenna.
- the dimension of the scattering plate 111B substantially corresponds to the detection range of the transmission / reception antenna shown in FIG.
- FIG. 10B is a diagram showing a cross section of the central axis (conical rotational symmetry axis) of the conical convex portion of the scattering plate 111B.
- the scattering plate 111B is manufactured by processing a metal such as steel.
- the length of the side surface S of the cone may be 0.5 times or more of the wavelength corresponding to the carrier frequency.
- the length of the side surface of the cone means the shortest distance between the apex and the bottom surface of the cone, and in the case of a cone, it corresponds to the length of the bus. If the length of the side surface S is less than 0.5 times the wavelength corresponding to the carrier frequency, the scattering effect due to the side surface reflection may not be obtained.
- the carrier frequency is 10 GHz
- the wavelength is 30 mm
- the length of the side surface S is 15 mm or more.
- FIG. 10 (c) is a diagram for explaining the reflection of electromagnetic waves in the direction perpendicular to the opening surface of the transmitting / receiving antenna by the conical convex portion shown in FIG. 10 (b).
- the electromagnetic waves in the direction perpendicular to the opening surface of the transmitting / receiving antenna are transmitted in each direction around the central axis at an angle of 30 degrees with respect to the direction on the side surface of the conical convex portion. Reflected.
- FIG. 11A is a plan view of a scattering plate in which conical convex portions are arranged on a flat plate.
- FIG. 11A (a) is a plan view in the case where the positions of the central axes of the cones are arranged so as to form the vertices of an equilateral triangle.
- FIG. 11A (b) is a plan view when the bottom surfaces of the cones are hexagonal and similarly arranged so that the positions of the central axes of the cones constitute the vertices of an equilateral triangle.
- FIG. 11B is a perspective view of a scattering plate in which conical convex portions and concave portions are arranged on a flat plate, respectively.
- FIG. 11B (a) is a perspective view of a scattering plate in which conical convex portions are arranged on a flat plate
- FIG. 11B (b) is a perspective view of a scattering plate in which conical concave portions are arranged on a flat plate.
- a scattering plate in which conical concave portions are arranged on a flat plate can achieve the same effect as a scattering plate in which conical convex portions are arranged on a flat plate.
- the scattering plate formed from the corrugated plate and the scattering plate formed from a collection of conical convex portions or concave portions disposed on the flat plate are manufactured by processing a metal such as steel as described above. It is excellent in environmental resistance such as heat resistance and can be used in a wide range.
- FIG. 12 is a diagram illustrating an experiment described with reference to FIG. 9, which is radiated by a band-width end position measuring device according to an embodiment of the present invention, reflected by a scattering plate formed from a corrugated plate, and received by the device.
- FIG. 12 is a diagram illustrating an experiment described with reference to FIG. 9, which is radiated by a band-width end position measuring device according to an embodiment of the present invention, reflected by a scattering plate formed from a corrugated plate, and received by the device.
- the horizontal axis represents the carrier frequency
- the vertical axis represents the intensity of the received electromagnetic wave.
- the intensity of the electromagnetic wave reflected by the scattering plate and received by the apparatus is represented by a solid line
- the intensity of the electromagnetic wave reflected by the apparatus without the scattering plate and received by the apparatus is represented by a dotted line.
- the former when the intensity of the electromagnetic wave reflected by the scattering plate is compared with the intensity of the electromagnetic wave reflected without the scattering plate, the former is about 20.7 dB smaller than the latter when the carrier frequency is 9 GHz.
- the carrier frequency is 10 GHz
- the former is about 18.1 dB smaller than the latter
- the carrier frequency is 11 GHz
- the former is about 13.5 dB smaller than the latter.
- FIG. 13 is a diagram illustrating an experiment described with reference to FIG. 10, which is radiated by a widthwise end position measuring device of a band according to an embodiment of the present invention and reflected by a scattering plate formed from a set of conical convex portions. It is a figure which shows the intensity
- the horizontal axis represents the carrier frequency
- the vertical axis represents the intensity of the received electromagnetic wave.
- the intensity of the electromagnetic wave reflected by the scattering plate and received by the apparatus is represented by a solid line
- the intensity of the electromagnetic wave reflected by the apparatus without the scattering plate and received by the apparatus is represented by a dotted line.
- the intensity of the electromagnetic wave reflected by the scattering plate is compared with the intensity of the electromagnetic wave reflected without the scattering plate
- the carrier frequency is 9 GHz
- the former is about 16.1 dB smaller than the latter.
- the carrier frequency is 10 GHz
- the former is about 22.6 dB smaller than the latter
- the carrier frequency is 11 GHz
- the former is about 21.7 dB smaller than the latter.
- FIG. 14 illustrates an experiment in which the position of the strip in the furnace is changed to examine the influence of the electromagnetic waves reflected by the furnace wall on the widthwise end position measuring apparatus of the strip according to the embodiment of the present invention. It is a figure for doing.
- FIG. 14A is a diagram showing a cross section parallel to the surface of the strip of the experimental apparatus
- FIG. 14B is a diagram showing a cross section perpendicular to the plane of the strip of the experimental apparatus.
- the experimental device includes a furnace part and a strip drive.
- the furnace portion includes furnace wall surface portions 301T 'and 301B' parallel to the surface of the belt-shaped body and furnace wall surface portions 301L 'and 301R' perpendicular to the surface of the belt-shaped body.
- the lengths in the width direction and the longitudinal direction of the strips of the furnace wall portions 301T ′ and 301B ′ are 2000 mm, respectively, and the length in the direction perpendicular to the plane of the strips of the furnace wall portions 301L ′ and 301R ′ is 700 mm. It is.
- the strip drive unit 601 moves the strip portion 201 ′ in the width direction of the strip inside the furnace portion.
- the thickness of the strip is 1 mm.
- the transmission antennas 101L and 103L of the widthwise end position measuring device for the band according to the present embodiment are installed on the furnace wall surface portion 301L ', and the electromagnetic waves radiated from the transmission antenna 101L are received by the reception antenna 103L.
- FIG. 15 is a diagram illustrating an end position measurement result of the width direction end position measuring apparatus for the band-shaped body according to the embodiment of the present invention when the scattering plate is not used in the experiment of FIG.
- the horizontal axis of FIG. 15 represents the distance between the left end of the strip-shaped body portion 201 'and the furnace wall surface portion 301L' in FIG.
- the vertical axis in FIG. 15 represents the measurement distance (left scale) and the deviation (right scale) of the measurement distance from the actual distance by the width direction end position measuring device of the strip according to the present embodiment.
- the measurement distance is indicated by a thin solid line
- the deviation is indicated by a thick solid line.
- the deviation of the measurement distance is about 45 mm at the maximum.
- the deviation of the measurement distance becomes large when the distance between the left end of the strip portion 201 ′ and the furnace wall surface portion 301 ⁇ / b> L ′ is 300 mm or less.
- the reason is that the electromagnetic wave reflected on the other wall surface of the furnace extends to a relatively close position to the receiving antenna 103L while being subjected to multiple reflections between the belt-like body part 201 ′ and the furnace wall surface parts 301T ′ and 301B ′. It is presumed that the vehicle travels in the left direction of FIG. 14 along 201 ′ and reaches the receiving antenna 103L.
- the length B of the furnace wall surface 301L (corresponding to the furnace wall surface portion 301L ′ in FIG. 14) and 301R (corresponding to the furnace wall surface portion 301R ′ in FIG. 14) in FIG. If it is above, the electromagnetic wave reflected on the other furnace wall surface is reflected in multiple numbers between strip
- FIG. 16 is a diagram showing an end position measurement result of the width direction end position measuring apparatus for the band-shaped body according to the embodiment of the present invention when a scattering plate formed of a corrugated plate is used in the experiment of FIG. It is.
- the experiment was performed in a state where the scattering plate 111A having the corrugated plate on the surface shown in FIG.
- the dimension of the scattering plate 111A substantially corresponds to the detection range of the transmission / reception antenna shown in FIG.
- the horizontal axis in FIG. 16 represents the distance between the left end of the strip-shaped body portion 201 'and the furnace wall surface portion 301L' in FIG.
- shaft of FIG. 16 represents the deviation (right scale) from the actual distance of the measurement distance (left scale) by the width direction edge part position measuring apparatus of the strip
- the measurement distance is indicated by a thin solid line
- the deviation is indicated by a thick solid line.
- the deviation of the measurement distance is about 19 mm at the maximum. Comparing FIG. 15 and FIG. 16, in particular, the deviation of the measured distance is remarkably reduced when the distance between the left end portion of the strip-shaped body portion 201 'and the furnace wall surface portion 301L' is 300 mm or less.
- FIG. 17 shows an end position of the width direction end position measuring apparatus according to an embodiment of the present invention when a scattering plate formed from a set of conical convex portions is used in the experiment of FIG. It is a figure which shows a measurement result.
- the experiment was performed in a state where the scattering plate 111 ⁇ / b> B having a conical convex portion on the surface shown in FIG. 10 was installed at a location facing the transmitting / receiving antenna of the furnace wall surface portion 301 ⁇ / b> R ′.
- the dimension of the scattering plate 111B substantially corresponds to the detection range of the transmission / reception antenna shown in FIG.
- the horizontal axis in FIG. 17 represents the distance between the left end of the strip-shaped body portion 201 'and the furnace wall surface portion 301L' in FIG.
- shaft of FIG. 16 represents the deviation (right scale) from the actual distance of the measurement distance (left scale) by the width direction edge part position measuring apparatus of the strip
- the measurement distance is indicated by a thin solid line
- the deviation is indicated by a thick solid line.
- the maximum deviation is about 13 mm. Comparing FIG. 15 and FIG. 17, the deviation of the measured distance is remarkably reduced over the entire range of the distance between the left end of the band-like body portion 201 ′ and the furnace wall surface portion 301 ⁇ / b> L ′.
- the inventor measured the end position of the band-shaped body in the furnace to face the end of the object to be measured (301 L).
- the measurement accuracy is greatly improved over a wide range of the distance between the surface where the antenna is installed and the end of the measurement target (201 '). I got new knowledge that I could do it.
- the deviation of the measurement distance when the distance between the left end of the band-shaped body portion band-shaped portion 201 'and the furnace wall surface portion 301L' is 300 mm or less, which is large when no scattering plate is installed, can be significantly reduced.
- the reason for this is that while traveling in multiple directions between the strip portion 201 ′ and the furnace wall portions 301T ′ and 301B ′, it proceeds along the strip portion 201 ′ in the left direction of FIG. 14 and reaches the receiving antenna 103L. It is estimated that the electromagnetic wave reflected by the furnace wall portion 301R ′ facing the surface on which the transmitting antenna is mainly installed is greatly reduced by installing the scattering plate 111A or 111B.
- FIG. 18 is a diagram showing a configuration of a width direction center position measuring device for a belt-like body installed in a closed space according to an embodiment of the present invention.
- FIG. 18 (a) is a diagram showing an overall configuration of the widthwise center position measuring apparatus for the band according to the present embodiment.
- the configuration other than the scattering plate is as described in relation to FIG.
- the strip 201 travels in the closed space.
- the transmitting antenna 101L and the receiving antenna 103L for measuring the position of one end in the width direction of the band-like body 201 are installed on the surface 301L of the closed space facing the one end in the width direction.
- the scattering plate 111R for reducing electromagnetic waves of noise received by the receiving antenna 103L is installed on a surface 301R facing the surface 301L of the closed space.
- the transmitting antenna 101R and the receiving antenna 103R for measuring the position of the other end in the width direction of the band 201 are installed on the surface 301R of the closed space facing the other end in the width direction.
- a scattering plate 111L for reducing electromagnetic waves of noise received by the receiving antenna 103R is installed on a surface 301L facing the surface 301R of the closed space.
- the scattering plates 111R and 111L are made of metal such as steel, and are formed from a set of corrugated plates or conical convex portions as described above.
- FIG. 18B shows the scattering plate 111L installed on the surface 111L of the closed space.
- the scattering plate 111L is installed around the transmission antenna 101L and the reception antenna 103L.
- the electromagnetic wave radiated from the transmitting antenna 101R installed on the surface 111R and reaches the scattering plate 111L installed on the surface 301L is reflected or scattered in a direction different from the incident direction, and is received by the receiving antenna 103R installed on the surface 111R. I will not head.
- the electromagnetic wave radiated from the transmitting antenna 101R installed on the surface 111R and reaches the transmitting antenna 101L and the receiving antenna 103L installed on the surface 301L is absorbed without being reflected.
- the transmitting antenna 101L and the receiving antenna 103L are connected to the power amplifiers 513 and 515, respectively, and are terminated with an impedance of 50 ohms. Therefore, the noise received by the receiving antenna 103R installed on the surface 111R is greatly reduced as compared with the case where the scattering plate 111L is not installed.
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Abstract
Description
t・c/2
で求められる。
TA・f1=TA・f2+N
これより
TA=N/(f1-f2) …(1)
が得られる。
これより、
Δt=(f1-f2)・τ/f1 …(2)
が得られる。時間差検出回路525は、この計算を行い、Δtを算出する。
x=(f1-f2)・τ・c/(2・f1) …(3)
として計算され、これより冷延鋼板201の端部の位置が分かる。距離演算回路527は、この計算を行い、距離xを算出する。
Claims (9)
- 複数の面で囲まれた閉鎖空間内を通過する帯状体の幅方向端部の位置を測定する幅方向端部位置測定装置であって、
該幅方向端部に向けて電磁波を放射し、該幅方向端部によって反射された電磁波を受信するアンテナと、
該反射された電磁波の情報を使用して、該幅方向端部の位置を求める信号処理部と、
入射した電磁波を散乱させる散乱板と、を備え、
該アンテナが、位置を求める幅方向端部に対向する、該閉鎖空間の第1の面に設置され、該散乱板が第1の面に対向する第2の面に設置された幅方向端部位置測定装置。 - 前記散乱板が、波板から形成される請求項1に記載の幅方向端部位置測定装置。
- 前記散乱板が、平板上に配置された錘状の凸部または凹部の集合から形成される請求項1に記載の幅方向端部位置測定装置。
- 複数の面で囲まれた閉鎖空間内を通過する帯状体の幅方向の中心位置を測定する幅方向中心位置測定装置であって、
一方の幅方向端部に向けて電磁波を放射し、該一方の幅方向端部によって反射された電磁波を受信する第1のアンテナと、
他方の幅方向端部に向けて電磁波を放射し、該他方の幅方向端部によって反射された電磁波を受信する第2のアンテナと、
該反射された電磁波の情報を使用して、該一方及び他方の幅方向端部の位置を求めることによって帯状体の幅方向の中心位置を求める信号処理部と、
入射した電磁波を散乱させる散乱板と、を備え、
第1のアンテナが該一方の幅方向端部に対向する、該炉壁閉鎖空間の第1の面に設置され、第2のアンテナが該他方の幅方向端部に対向する、該炉壁閉鎖空間の第2の面に設置され、該散乱板が、第1の面の第1のアンテナの周囲及び第2の面の第2のアンテナの周囲に設置された幅方向中心位置測定装置。 - 入射したマイクロ波を散乱させる散乱板であって、波板から形成された散乱板。
- 前記波板の側面の長さが、マイクロ波の波長の0.5倍以上である請求項5に記載の散乱板。
- 前記入射したマイクロ波の、前記波板の面に対する入射角が20度から45度の範囲である請求項5または6に記載の散乱板。
- 入射したマイクロ波を散乱させる散乱板であって、平板上に配置された錘状の凸部または凹部の集合から形成された散乱板。
- 錐の側面の長さが、マイクロ波の波長の0.5倍以上ある請求項8に記載の散乱板。
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PCT/JP2011/000618 WO2012104921A1 (ja) | 2011-02-03 | 2011-02-03 | 帯状体の幅方向端部位置測定装置、帯状体の幅方向中心位置測定装置及びマイクロ波散乱板 |
KR1020137016671A KR20140003457A (ko) | 2011-02-03 | 2011-02-03 | 띠모양체의 폭방향 단부 위치 측정 장치, 띠모양체의 폭방향 중심 위치 측정 장치 및 마이크로파 산란판 |
JP2012555566A JP5731548B2 (ja) | 2011-02-03 | 2011-02-03 | 帯状体の幅方向端部位置測定装置及び帯状体の幅方向中心位置測定装置 |
CN2011800666021A CN103339469A (zh) | 2011-02-03 | 2011-02-03 | 带状体的宽度方向端部位置测定装置、带状体的宽度方向中心位置测定装置以及微波散射板 |
EP11857437.5A EP2672219A1 (en) | 2011-02-03 | 2011-02-03 | Width-direction end position measuring device for band-shaped member, width-direction center position measuring device for band-shaped member, and microwave scattering plate |
US13/944,256 US20130300598A1 (en) | 2011-02-03 | 2013-07-17 | Apparatus for measuring width direction end position of strip, apparatus for measuring width direction central position of strip and microwave scattering plate |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018235167A1 (ja) * | 2017-06-20 | 2018-12-27 | 株式会社ニレコ | 位置・姿勢測定方法及び位置・姿勢測定装置 |
JP7549232B2 (ja) | 2021-03-25 | 2024-09-11 | 日本製鉄株式会社 | 端部検出装置、スラブ長測定装置、端部検出方法及びスラブ長測定方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108387785A (zh) * | 2018-01-24 | 2018-08-10 | 南京航空航天大学 | 一种微波干涉谱测定方法 |
FI129341B (en) | 2020-02-24 | 2021-12-15 | Senfit Oy | Device and method for measuring a surface |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6023767U (ja) * | 1983-07-23 | 1985-02-18 | 川崎製鉄株式会社 | マイクロ波距離測定装置 |
JPS63506U (ja) * | 1986-06-18 | 1988-01-05 | ||
JPS6375510A (ja) * | 1986-09-18 | 1988-04-05 | Bridgestone Corp | 可撓性膜堰の堰高測定装置 |
JPH0616080B2 (ja) | 1988-02-09 | 1994-03-02 | 日本鋼管株式会社 | 距離測定装置 |
JPH08251696A (ja) * | 1995-03-14 | 1996-09-27 | Kaijo Corp | 超音波送受波器並びにその取付部材及びそのカバー |
JPH0968574A (ja) * | 1995-08-31 | 1997-03-11 | Mitsubishi Electric Corp | 複合誘導装置 |
WO2006048979A1 (ja) * | 2004-11-08 | 2006-05-11 | Nireco Corporation | 帯状体の幅方向端部位置測定方法及び装置、及び帯状体の幅方向中心位置測定方法及び装置 |
JP2008277363A (ja) | 2007-04-26 | 2008-11-13 | Kuraray Co Ltd | 電磁波吸収体 |
JP2010019691A (ja) * | 2008-07-10 | 2010-01-28 | Denso Corp | 電波暗箱 |
Family Cites Families (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO862192D0 (no) * | 1986-06-03 | 1986-06-03 | Sintef | Reflektorantenne med selvbaerende mateelement. |
JPH0616081B2 (ja) * | 1988-10-06 | 1994-03-02 | 日本鋼管株式会社 | 距離測定装置 |
US5075863A (en) * | 1988-02-09 | 1991-12-24 | Nkk Corporation | Distance measuring method and apparatus therefor |
DE3915280C2 (de) * | 1989-05-10 | 1993-11-04 | Berthold Lab Prof R | Vorrichtung zur mikrowellen-transmissions- oder absorptionsmessung |
US5384571A (en) * | 1992-05-18 | 1995-01-24 | Battelle Memorial Institute | Method of forming relief surfaces |
US5583318A (en) * | 1993-12-30 | 1996-12-10 | Lucent Technologies Inc. | Multi-layer shield for absorption of electromagnetic energy |
US5594218A (en) * | 1995-01-04 | 1997-01-14 | Northrop Grumman Corporation | Anechoic chamber absorber and method |
US5606334A (en) * | 1995-03-27 | 1997-02-25 | Amarillas; Sal G. | Integrated antenna for satellite and terrestrial broadcast reception |
US5959590A (en) * | 1996-08-08 | 1999-09-28 | Endgate Corporation | Low sidelobe reflector antenna system employing a corrugated subreflector |
US5844518A (en) * | 1997-02-13 | 1998-12-01 | Mcdonnell Douglas Helicopter Corp. | Thermoplastic syntactic foam waffle absorber |
JPH1187978A (ja) * | 1997-09-09 | 1999-03-30 | Nitto Boseki Co Ltd | 不燃性電波吸収体 |
US6609451B1 (en) * | 1998-10-21 | 2003-08-26 | Omron Corporation | Mine detector and inspection apparatus |
JP4377467B2 (ja) * | 1999-01-21 | 2009-12-02 | Tdk株式会社 | 電波吸収体組立用部材およびそれを用いた電波吸収体 |
AUPQ189499A0 (en) * | 1999-07-28 | 1999-08-19 | Tenix Defence Systems Pty Ltd | Improvements in or relating to vehicles |
GB2353638A (en) * | 1999-08-25 | 2001-02-28 | Secr Defence | Low frequency electromagnetic absorption surface |
US7428468B2 (en) * | 2001-06-15 | 2008-09-23 | Sumitomo Osaka Cement Co., Ltd. | Monitoring apparatus |
US6661368B1 (en) * | 2001-10-29 | 2003-12-09 | Sandia Corporation | Control of reflected electromagnetic fields at an IFSAR antenna |
JP2003229691A (ja) * | 2002-01-31 | 2003-08-15 | Riken Corp | 電波吸収体 |
JP4346360B2 (ja) * | 2002-12-25 | 2009-10-21 | 東レ株式会社 | 電波吸収体用シート材および電波吸収体 |
JP4375987B2 (ja) * | 2003-03-26 | 2009-12-02 | Tdk株式会社 | 電波吸収体用成型体およびその製造方法、ならびに電波吸収体 |
JP2004325160A (ja) * | 2003-04-23 | 2004-11-18 | Hitachi Ltd | 車載用レーダ |
US20070241962A1 (en) * | 2003-11-14 | 2007-10-18 | Hiroshi Shinoda | Automotive Radar |
CN1922948B (zh) * | 2004-02-27 | 2011-06-22 | 三菱瓦斯化学株式会社 | 电波吸收体以及电波吸收体的制造方法 |
US7551117B2 (en) * | 2005-04-12 | 2009-06-23 | Ubiquitous Environment Company | All-weather radio wave absorber having reflector and object into which such absorber is integrated |
US7479917B2 (en) * | 2005-08-05 | 2009-01-20 | Tdk Corporation | Electromagnetic wave absorber, manufacturing method thereof and electromagnetic wave anechoic room |
JP4946405B2 (ja) * | 2006-12-07 | 2012-06-06 | 株式会社デンソー | 検査システム |
US8013775B2 (en) * | 2007-04-30 | 2011-09-06 | Viasat, Inc. | Radio frequency absorber |
JP5496879B2 (ja) * | 2008-04-15 | 2014-05-21 | 株式会社リケン | 複合型電波吸収体 |
US8598470B2 (en) * | 2008-06-26 | 2013-12-03 | Seiji Kagawa | Electromagnetic-wave-absorbing film and electromagnetic wave absorber comprising it |
CN101726164B (zh) * | 2009-11-19 | 2011-10-19 | 苗振东 | 动态反射式微波加温干燥灭菌设备 |
-
2011
- 2011-02-03 JP JP2012555566A patent/JP5731548B2/ja not_active Expired - Fee Related
- 2011-02-03 EP EP11857437.5A patent/EP2672219A1/en not_active Withdrawn
- 2011-02-03 KR KR1020137016671A patent/KR20140003457A/ko not_active Application Discontinuation
- 2011-02-03 WO PCT/JP2011/000618 patent/WO2012104921A1/ja active Application Filing
- 2011-02-03 CN CN2011800666021A patent/CN103339469A/zh active Pending
-
2013
- 2013-07-17 US US13/944,256 patent/US20130300598A1/en not_active Abandoned
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6023767U (ja) * | 1983-07-23 | 1985-02-18 | 川崎製鉄株式会社 | マイクロ波距離測定装置 |
JPS63506U (ja) * | 1986-06-18 | 1988-01-05 | ||
JPS6375510A (ja) * | 1986-09-18 | 1988-04-05 | Bridgestone Corp | 可撓性膜堰の堰高測定装置 |
JPH0616080B2 (ja) | 1988-02-09 | 1994-03-02 | 日本鋼管株式会社 | 距離測定装置 |
JPH08251696A (ja) * | 1995-03-14 | 1996-09-27 | Kaijo Corp | 超音波送受波器並びにその取付部材及びそのカバー |
JPH0968574A (ja) * | 1995-08-31 | 1997-03-11 | Mitsubishi Electric Corp | 複合誘導装置 |
WO2006048979A1 (ja) * | 2004-11-08 | 2006-05-11 | Nireco Corporation | 帯状体の幅方向端部位置測定方法及び装置、及び帯状体の幅方向中心位置測定方法及び装置 |
JP4416798B2 (ja) | 2004-11-08 | 2010-02-17 | 株式会社ニレコ | 帯状体の幅方向端部位置測定方法及び装置、及び帯状体の幅方向中心位置測定方法及び装置 |
JP2008277363A (ja) | 2007-04-26 | 2008-11-13 | Kuraray Co Ltd | 電磁波吸収体 |
JP2010019691A (ja) * | 2008-07-10 | 2010-01-28 | Denso Corp | 電波暗箱 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018235167A1 (ja) * | 2017-06-20 | 2018-12-27 | 株式会社ニレコ | 位置・姿勢測定方法及び位置・姿勢測定装置 |
JP7549232B2 (ja) | 2021-03-25 | 2024-09-11 | 日本製鉄株式会社 | 端部検出装置、スラブ長測定装置、端部検出方法及びスラブ長測定方法 |
Also Published As
Publication number | Publication date |
---|---|
CN103339469A (zh) | 2013-10-02 |
JPWO2012104921A1 (ja) | 2014-07-03 |
US20130300598A1 (en) | 2013-11-14 |
KR20140003457A (ko) | 2014-01-09 |
JP5731548B2 (ja) | 2015-06-10 |
EP2672219A1 (en) | 2013-12-11 |
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