WO2013076840A1 - バンド検出センサ及びその検出方法 - Google Patents
バンド検出センサ及びその検出方法 Download PDFInfo
- Publication number
- WO2013076840A1 WO2013076840A1 PCT/JP2011/077042 JP2011077042W WO2013076840A1 WO 2013076840 A1 WO2013076840 A1 WO 2013076840A1 JP 2011077042 W JP2011077042 W JP 2011077042W WO 2013076840 A1 WO2013076840 A1 WO 2013076840A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- band
- web
- detection
- detection signal
- signal
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/55—Specular reflectivity
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
- A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
- A24C5/32—Separating, ordering, counting or examining cigarettes; Regulating the feeding of tobacco according to rod or cigarette condition
- A24C5/34—Examining cigarettes or the rod, e.g. for regulating the feeding of tobacco; Removing defective cigarettes
- A24C5/3412—Examining cigarettes or the rod, e.g. for regulating the feeding of tobacco; Removing defective cigarettes by means of light, radiation or electrostatic fields
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D1/00—Cigars; Cigarettes
- A24D1/02—Cigars; Cigarettes with special covers
- A24D1/025—Cigars; Cigarettes with special covers the covers having material applied to defined areas, e.g. bands for reducing the ignition propensity
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/10—Packing paper
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
- G01N21/898—Irregularities in textured or patterned surfaces, e.g. textiles, wood
Definitions
- the present invention relates to a band detection sensor for detecting a band formed on a web during a running process of the web and a detection method thereof.
- This type of band detection sensor includes a projector that emits detection light to a running web, a light receiver that receives the detection light reflected by the web, and outputs a detection signal corresponding to the intensity of the detection light. And a determination device that determines the presence of a band on the web based on a detection signal from a light receiver (see Patent Document 1). Specifically, the determination device compares the average peak level value of the detection signal with a threshold value, and generates a band signal indicating the presence of a band when the average peak level value exceeds the threshold value.
- Patent No. 3980267 JP 3980267 B2
- the threshold value is a fixed value expressed as a percentage of the average peak level value. Therefore, if the web is wrinkled due to the formation of the band or the web is deformed so as to wave, the detection signal obtained in the non-band region, that is, the non-band region, The possibility that the average peak level value exceeds the threshold cannot be denied. As a result, the band detection sensor of Patent Document 1 is liable to cause erroneous band detection.
- An object of the present invention is to prevent erroneous detection of a band caused by wrinkles or deformation even if the web wrinkles or deformation that undulates the web, and to increase the detection accuracy of the band higher than before.
- An object of the present invention is to provide a band detection sensor and a detection method thereof.
- the band detection sensor of the present invention that detects bands arranged on one side of the web at intervals in the longitudinal direction thereof.
- This band detection sensor is disposed on the web travel path and is arranged on one side of the web.
- a projector that emits detection light to the projector, and a detection light that is disposed on the travel route at a position away from the projector along the travel route, reflected by the web, and detected according to the intensity of the received detection light
- a receiver that outputs a signal, and a band determiner that determines the band on the web based on a detection signal from the receiver; the band determiner is a rising determination indicating a rising speed of the detection signal;
- a band signal indicating the presence of a band is generated when the change in the detection signal includes the reference and the rising signal satisfies the rising criterion.
- a band signal is generated when the change in the detection signal satisfies the rising criterion, so that the band signal is related to the surface condition (wrinkles and undulations) of the web. Rather, it accurately indicates the presence of the band.
- the band detection sensor can detect only the band with high accuracy.
- the detection light is preferably invisible light, that is, near infrared light. In this case, the band detection sensor can detect the band without being adversely affected by external light such as illumination.
- the angle formed by the optical axis of the projector and the one surface of the web is 30 degrees or less. In this case, since a large incident angle of the detection light with respect to the web is secured, transmission of the detection light with respect to the web is suppressed, and as a result, the detection light reflected on the web becomes strong.
- the rising criterion is expressed by two positions on the web that are separated in the longitudinal direction of the web and the level difference of the detection signal at these positions. Furthermore, it is preferable that the band determiner determines a band on the web based on a moving average value calculated from a predetermined number of detection signals and a rising determination criterion. In addition, the band determiner may further include a falling determination criterion that represents the falling speed of the detection signal.
- the band detection sensor can further include a band missing determiner that determines a missing band.
- the band missing determiner When the counter value counted while resetting at every signal output or output stop reaches a predetermined threshold value, a band missing signal is output. In this case, the missing band signal accurately indicates the missing band.
- the band detection sensor and its detection method of this invention can detect the band on a web correctly.
- the band detection sensor 10 of one embodiment is applied to a cigarette manufacturing machine.
- the cigarette making machine includes a web roll 12, and a web W is supplied from the web roll 12 along a traveling path 14 to a cigarette forming device 18.
- a feed roller unit 16 is disposed in the traveling path 14, and the feed roller unit 16 sends the web W from the web roll 12 to the forming device 18 at a constant traveling speed.
- the web W has a large number of bands B, and these bands B are arranged at a constant pitch in the longitudinal direction of the web W and extend in the width direction of the web W.
- Such a band B is formed by applying a liquid combustion inhibitor to one side of the web W.
- the molding device 18 first receives the chopped tobacco material together with the web W.
- the cut tobacco material and the web W are formed into a tobacco rod by continuously wrapping the cut tobacco material with the web W in the molding device 18.
- the molded tobacco rod is cut at predetermined lengths, thereby obtaining a double cigarette DC.
- the double cigarette DC has a double length wrapping paper composed of a part of the web W.
- the double cigarette DC is supplied to the filter mounting machine together with the filter rod.
- This filter mounting machine forms a filter cigarette FC as shown in FIG. 2 from a double cigarette DC and a filter rod.
- the double cigarette DC is cut into two cigarettes, while the filter rod is also cut into a plurality of filter plugs. Thereafter, one filter plug is disposed between the two cigarettes, and the cigarette and the filter plug are connected to each other by wrapping the chip paper and formed into a double filter cigarette. Then, the double filter cigarette is cut into equal parts, whereby two filter cigarettes FC are obtained from one double filter cigarette.
- Each filter cigarette FC wrapping paper has two bands B that provide low fire spread to the filter cigarette FC.
- the filter rod and the filter attaching machine are not shown.
- the above-described band detection sensor 10 is disposed between the feed roller unit 16 and the molding device 18, and executes a method for detecting the band B as will be described later.
- the band detection sensor 10 includes a plurality of light emitting diodes (LEDs) 20 as light projectors, a plurality of photodiodes 22 as light receivers, and a detection board 24.
- LEDs light emitting diodes
- the LED 20 irradiates one side of the web W with detection light over the entire width of the web W (irradiation process).
- the detection light has a wavelength selected from the near-infrared wavelength region of 750 nm to 1500 nm, which is invisible light, for example, a wavelength of 950 nm, and the angle formed by the optical axis of the detection light and one side of the web W is 30. It is set below the degree.
- the photodiode 22 is positioned downstream of the LED 20 in the running direction of the web W.
- the photodiode 22 receives detection light reflected on one side of the web W, that is, band B or a non-band region other than band B, and generates an electrical detection signal corresponding to the received detection light (output process). ).
- the band detection sensor 10 further includes an optical filter 23 immediately before the photodiode 22, and this optical filter 23 cuts light having a wavelength shorter than 750 nm, that is, visible light.
- the LED 20 and the photodiode 22 are electrically connected to a detection board 24.
- the detection board 24 adjusts the amount of detection light emitted from the LED 20 and the light receiving sensitivity of the photodiode 22, while detecting signals as described later. Based on the above, the band B on the web W is detected.
- the detection board 24 is a so-called single board computer, and includes a substrate, a microprocessor mounted on the substrate, a custom LSI, a memory, an input / output interface, and the like.
- the function of the detection board 24 will be described in detail below with reference to the functional block diagram shown in FIG.
- the detection signal from the photodiode 22 is converted into a digital signal in the section 26 and passes through the low-pass filter 28.
- the DC fluctuation included in the detection signal is detected in the section 30, and the control amount of the amount of light to be emitted from the LED 20 is calculated in the section 32 based on the detected DC fluctuation.
- the drive signal for driving the LED 20 is modulated based on the calculated light amount control amount, and the modulated drive signal is supplied to the LED 20 via the output section 36. Therefore, the LED 20 can irradiate one side (band B and non-band region) of the web W satisfactorily.
- the detection signal that has passed through the AD conversion section 26 is supplied to the section 40 through the high-pass filter 38, and the light reception gain of the high-pass filter 38 is adjusted based on the control amount of the light amount obtained in the section 32. . Therefore, the section 40 can collect a detection signal that accurately indicates the reflection intensity of the detection light.
- Section 40 collects the detection signal S R for each predetermined sampling period. Here, the intensity of the collected detection signal S R varies greatly depending on the presence or absence of bands B.
- the flatness of the band B is higher than the flatness of the non-band region. That is, the reflection intensity of the detection light reflected by the band B is higher than the reflection intensity of the detection light reflected by the non-band region. Therefore, when the collected detection signal S R is plotted along the time axis, the detection signal S R draws waveforms WF 0 corresponding to the band B. However, since the variation due to waving deformation of wrinkle or web W of the detection signal S R is web W as described above, the waveform WF 0 is rough as shown in FIG.
- Detection signal S R is fed from the section 40 to the next smoothing section 42, the smoothing section 42 performs the smoothing processing of the detection signal S R. Specifically, the smoothing section 42 sequentially calculates a moving average value of the detection signal S R based on the following equation, and outputs the moving average value as a detection signal S D of the smoothing processed (moving average value calculation step) .
- S D (k) (S R (k) + S R (k ⁇ 1) ... + S R [k ⁇ (L ⁇ 1)] ) / L
- k represents the sampling end number of the detection signal S R to be the moving average process
- L is showing a sampling number. In this embodiment, the sampling number L is 7.
- the detection signal SD obtained in this way is supplied to the next section 44, and in this section 44, processing for removing the aforementioned DC fluctuation from the detection signal SD is executed.
- the processed detection signal SD is output from the section 44 to a display (not shown) and displayed as a waveform WF 1 on the display.
- the waveform WF 1 is obtained by plotting along the detection signal S D to the time axis, as shown in FIG. 4, the smooth compared to the waveform WF 0 obtained from the detection signal S R.
- the detection signal SD is also supplied to a determination section 46 as a band determination device, and the determination section 46 detects the band B on the web W based on the detection signal SD (band determination step). Specifically, the determination section 46 executes the band determination procedure shown in FIGS. 5 and 6 every time the detection signal SD is detected, and this band determination procedure will be described below.
- step S1 whether the band signal S B is output is discriminated, the determination result is false (N) If so, the next step S2 is executed.
- step S2 detection signals S D (n ⁇ N) and S D (n) located at the start and end of a predetermined monitoring target period T N (n) (see FIG. 7 ) are read.
- N in the monitoring target period T N (n) indicates that the monitoring target period T is defined by an integer multiple N of the output period of the detection signal SD
- S D (n) N in TN (n) indicates the position of the detection signal SD and the monitoring target period TN in the direction along the time axis as seen in FIG.
- step S3 the following expression is determined.
- L 1 represents a rising determination level. If the determination result in step S3 is false, the next detection signal SD (n + 1) is supplied to the determination section 46, and the same processing is repeated from step S1.
- band signal S B is the detection signal S D in a certain monitoring period T N (n-N), is output when the level difference between S D (n) becomes determination level L 1 or rising (Step S5).
- step S6 in FIG. 6 is executed from step S1.
- detection signals S D (m ⁇ M) and S D (m) located at the start and end of a predetermined monitoring target period T M (m) are read, respectively.
- M in the monitoring target period T M (m) indicates that the monitoring target period T is defined by an integer multiple M of the output period of the detection signal SD
- S D (m) and T M (m) m represents the position of the detection signal S D and the monitoring period T M with respect to a direction along the time axis as viewed in FIG. 7, and the relation of n ⁇ m.
- next step S7 the following expression is determined.
- L 2 indicates a falling determination level and satisfies the relationship of L 1 ⁇ L 2 . If the decision result in the step S7 is negative, with the band signal S B is output, the next detection signal S D (m + 1) is supplied to the judgment section 46, the same processing from step S1 is repeated.
- step S1 S6, S7 is executed repeatedly, when the determination result in step S7 becomes true (Y), the output of the band signal S B is stopped (step S9). That is, the output of band signal S B is the detection signal S D (m-M) in a certain monitoring period T M, as it becomes S D (m) level difference between the falling determination level L 2 or Stopped.
- the determination section 46 includes the detection signal SD in addition to the rising determination criterion (the monitoring target period T N and the rising determination level L 1 ) indicating the rising speed of the detection signal SD . Since the presence / absence of the band B is detected on the basis of the falling judgment standard (the monitoring target period TM and the rising judgment level L 2 ) representing the speed of falling, the above-described wrinkles or undulating deformation occurs in the web W. However, these wrinkles and deformations hardly affect the detection of the band B, and not only the existence of the band B but also the effective width of the band B can be detected with high accuracy. Of course, it may be used as it is as the detection signal a detection signal S R in place of the detection signal S D.
- detecting band B near infrared light is used as detection light, and the photodiode 22 is combined with an optical filter 23 that cuts visible light. Does not have an adverse effect. Further, since the angle formed by the optical axis of the LED 20 and the web W is set to 30 degrees or less, the detection light is efficiently reflected by the web W as described above, and the reflected detection light is reflected on the web W. The presence or absence of band B is shown well.
- the band detection sensor 10 of the present embodiment can detect not only the detection of the band B but also the loss of the band B.
- the detection of the loss of the band B will be described below.
- the detection board 24 further includes a band loss determination unit.
- the band loss determination unit includes a band counter 48, a rotary encoder 50, and a loss determination section 52.
- the rotary encoder 50 is attached to the feed roller of the feed roller unit 16 described above, and supplies a pulse signal corresponding to the travel distance of the web W to the band counter 48.
- the band counter 48 is also connected to the determination section 46, the operation of the band counter 48 is controlled by the output or stop outputting the band signals S B described above.
- the band counter 48 will be described by way of example that is reset each time the output stop of the band signal S B is performed, as shown in FIG. 8, the band counter 48 for each output stop band signal S B re-activation and until the output stop of the next band signal S B, it continues to increase its count value.
- the band counter 48 supplies a counter value to the missing determination section 52.
- the counter value from the band counter 48 is compared with the threshold value, and when the counter value reaches the threshold value without being reset due to the missing band, the missing determination section 52 is shown in FIG. and it outputs the band dropout signal S K to the outside as.
- the band missing signal SK is returned to the band counter 48 as a reset signal.
- the threshold value is set to be always larger than the counter value if the band B on the web W exists at a constant pitch.
- the band B missing detection procedure described above only when there is a band B missing, the counter value exceeds the threshold value, so that the band B missing can be reliably detected.
- the present invention is not limited to the band detection sensor 10 of the embodiment described above, and various modifications are possible.
- the determination section 46 can detect the band B by the band determination procedure shown in FIGS. 9 and 10.
- step S11 in FIG. 9 whether or not as in the case band signal S B at step S1 described above are output is determined. If the determination result here is false, it is determined whether or not the value of the first counter for counting the monitoring period TN described above is within TN (step S12). If the determination result of step S12 is false, the following expression is determined in the next step S13.
- S DA and S DB indicate the current value and the previous value of the detection signal SD output from the smoothing section 42, respectively, and as shown in FIG. 11, ⁇ is the rising change of the waveform WF 1 Is an arbitrary threshold. If the determination result in step S13 is false, steps S11 to S13 are repeatedly executed, and when the determination result in step S12 becomes true, the operation of the first counter is started, while the reference value A is detected. SDA is substituted (step S14). Once step S14 is executed, when the determination of step S12 is executed next, the determination result here becomes true, and the following equation is determined in the next step S15.
- S DA -A ⁇ L 1 Incidentally, as shown in FIG. 11, L 1 is a rising decision level described above.
- step S15 If the determination result in step S15 is false, the value of the first counter is increased, that is, incremented (step S16). Therefore, as long as the determination result of step S12 is truly maintained, that is, as long as the determination result is within the monitoring target period TN , the determination of step S15 is repeatedly executed.
- the band signal S B is output (step S17).
- step S17 the value of the first counter is reset.
- step S18 the band signal S B is output, when the next determination in step S1 is executed, since the result of this determination is true, then in step S18 in FIG. 10, the monitored It is determined whether or not the value of the second counter for counting the period T M is within T M. If the determination result of step S18 is false, the following expression is determined in the next step S19.
- S DB -S DA ⁇ ⁇ As shown in FIG. 11, ⁇ is a threshold value indicating a falling change of the waveform WF 1 .
- step S19 When the determination result in step S19 is false, steps S18 to S19 are repeatedly executed, and when the determination result in step S19 becomes true, the operation of the second counter is started, while the reference value C is detected. SDA is substituted (step S20). Once step S20 is executed, the next determination result is true when the determination of step S18 is executed next, and the following equation is determined in the next step S21.
- step S21 If the determination result in step S21 is false, the value of the second counter is increased, that is, incremented (step S22). Therefore, as long as the determination result of step S18 is truly maintained, i.e., insofar as they come within the monitoring period T M, is executed repeatedly determined in the step S21.
- step S21 When the determination result in step S21 becomes true, the output of the band signal S B is stopped (step S23). In step S23, the value of the first counter is reset.
- the band B can be accurately detected regardless of the wrinkles of the web W or its wavy deformation, as in the determination procedures of FIGS. 5 and 6.
- the above-described monitoring target periods T N and T M can be defined by the number of pulse signal counts from the rotary encoder 50 instead of the number of output cycles of the detection signal SD .
- the detection board 24 may further include a speed detection section 54 connected to the rotary encoder 50.
- the speed detection section 54 detects the traveling speed of the web W based on the pulse signal from the rotary encoder 50 and supplies the detected traveling speed to the determination section 46.
- the determination section 46 changes the length of the monitoring target period based on the traveling speed of the web W so that the length during which the web W is sent during the monitoring target period is constant. That is, even if the traveling speed of the web W is changed, the determination criteria are two positions on the web W separated in the longitudinal direction of the web W at a predetermined distance set in advance, and the level of the detection signal at these positions. Expressed as a difference. Thereby, regardless of the traveling speed of the web W, it is possible to set the determination standard in a form in which the monitoring target period of the determination standard is replaced with the distance.
- the band detection sensor 10 of the present invention is not limited to the web W used for manufacturing cigarettes, but can be used for detection of bands formed on various webs. Even if the type of web W used for cigarette manufacture and the lot change, the degree of reflection of the detection light on the web changes and the value of the detection signal increases or decreases as a whole. This web can be used without setting a threshold value or the like.
Landscapes
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Textile Engineering (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Toxicology (AREA)
- Wood Science & Technology (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Geophysics And Detection Of Objects (AREA)
- Controlling Sheets Or Webs (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
検出光は、非可視光つまり近赤外線であるのが好ましい。この場合、バンド検出センサは、照明等の外部の光に起因した悪影響を受けることなく、バンドの検出が可能となる。
また、バンド判定器は、検出信号の立ち下がり速さを表す立ち下がり判定基準を更に含むことができる。
なお、本発明は、上述したバンドの検出方法を提供し、この検出方法並びにバンド検出センサ等の詳細は添付図面及び後述の説明から明らかとなる。
ウエブWは多数のバンドBを有し、これらバンドBはウエブWの長手方向に一定のピッチを存して並び且つウエブWの幅方向に亘って延びている。このようなバンドBはウエブWの片面に液状の燃焼抑制剤を塗布して形成されている。
この後、ダブルシガレットDCはフィルタロッドとともにフィルタ取付け機に供給される。このフィルタ取付け機は、ダブルシガレットDC及びフィルタロッドから図2に示されるようなフィルタシガレットFCを形成する。
図1から明らかなように、前述したバンド検出センサ10はフィードローラユニット16と成形装置18との間に配置され、後述するようにバンドBの検出方法を実行する。バンド検出センサ10は、投光器としての複数の発光ダイオード(LED)20、受光器としての複数のフォトダイオード22及び検出ボード24を含む。
検出ボード24は所謂シングルボードコンピュータであって、基板及びこの基板に実装されたマイクロプロセッサ、カスタムLSI、メモリ及び入出力インタフェース等を含む。ここでは、検出ボード24の構造を具体的に説明する代わりに、検出ボード24の機能を図3に示された機能ブロック線図を参照しながら、以下に詳述する。
セクション40は、一定のサンプリング周期毎に検出信号SRを収集する。ここで、収集された検出信号SRの強度はバンドBの有無によって大きく変化する。
SD(k)=(SR(k)+SR(k-1)…+SR[k-(L-1)])/L
ここで、kは移動平均処理の対象となる検出信号SRのサンプリング終了番号を示し、Lはサンプリング数を示す。本実施例の場合、サンプリング数Lは7である。
ここで、波形WF1は、検出信号SDを時間軸に沿ってプロットして得られ、図4中に示されるように、検出信号SRから得られる波形WF0に比べて平滑になる。
具体的には、判定セクション46は検出信号SDが検出される度に図5及び図6に示されるバンド判定手順を実行し、以下、このバンド判定手順について説明する。
SD(n)-SD(n-N)≧L1
ここで、L1は立ち上がり判定レベルを示す。
ステップS3の判別結果が偽の場合、次の検出信号SD(n+1)が判定セクション46に供給され、ステップS1から同様の処理が繰り返される。
SD(m-M)-SD(m)≧L2
ここで、L2は立ち下がり判定レベルを示し、L1≧L2の関係を満たす。
ステップS7の判別結果が偽の場合、バンド信号SBが出力された状態で、次の検出信号SD(m+1)が判定セクション46に供給され、ステップS1から同様の処理が繰り返される。
更に、LED20の光軸とウエブWとのなす角度が30度以下に設定されていることから、前述したように検出光はウエブWにて効率良く反射し、反射した検出光はウエブW上のバンドBの有無を良好に示す。
図3に示されるように検出ボード24はバンド欠落判定器を更に含み、このバンド欠落判定器は、バンドカウンタ48、ロータリエンコーダ50及び欠落判定セクション52からなる。ロータリエンコーダ50は図1に示されるように、前述したフィードローラユニット16のフィードローラに取付けられ、ウエブWの走行距離に対応したパルス信号をバンドカウンタ48に供給する。
本発明は、前述した一実施例のバンド検出センサ10に制約されるものではなく、種々の変形が可能である。
例えば、図5及び図6に示されたバンド判定手順に代えて、判定セクション46は図9及び図10に示されるバンド判定手順にてバンドBの検出を行うことも可能である。
SDA-SDB≧α
ステップS13の判別結果が偽の場合、ステップS11~S13が繰り返して実行され、ステップS12の判別結果が真になった時点で、第1カンウタの作動が開始される一方、基準値Aに検出信号SDAが代入される(ステップS14)。
ステップS14が一旦実行されると、次にステップS12の判別が実行されたとき、ここでの判別結果は真となり、次のステップS15にて、次式が判別される。
SDA-A≧L1
なお、図11に示されるように、L1は前述した立ち上がり判定レベルである。
ステップS15の判別結果が真になると、バンド信号SBが出力される(ステップS17)。また、ステップS17では第1カウンタの値はリセットされる。
SDB-SDA≧β
ここで、図11に示されるように、βは波形WF1の立ち下がり変化を示す閾値である。
ステップS20が一旦実行されると、次にステップS18の判別が実行されたとき、ここでの判別結果は真となり、次のステップS21にて、次式が判別される。
C―SDA≧L2
なお、図11に示されるように、L2は前述した立ち下がり判定レベルである。
ステップS21の判別結果が真になると、バンド信号SBの出力が停止される(ステップS23)。また、ステップS23では第1カウンタの値はリセットされる。
一方、前述した監視対象期間TN,TMは、検出信号SDの出力周期数に代えて、ロータリエンコーダ50からのパルス信号のカウント数によって規定することも可能である。
また、シガレットの製造に使用されるウエブWの種類やロットが変更されることで、ウエブでの検出光の反射の程度が変化し、検出信号の値が全体的に増減するとしても、変更後のウエブを閾値の設定等を行うことなく使用することができる。
20 LED(投光器)
22 フォトダイオード(受光器)
23 光学フィルタ
24 検出ボード
26 AD変換セクション
28 ローパスフィルタ
34 変調セクション
38 ハイパスフィルタ
46 バンド判定セクション(バンド判定器)
48 バンドカウンタ
50 ロータリエンコーダ
52 欠落判定セクション
54 速度検出セクション
SB バンド信号
SK バンド欠落信号
W ウエブ
Claims (9)
- ウエブの片面にその長手方向に間隔を存して並ぶバンドを検出するバンド検出センサであって、
前記ウエブの走行経路に配置され、前記ウエブの前記片面に検出光を照射する投光器と、
前記投光器から前記走行経路に沿って離れた位置にて前記走行経路に配置され、前記ウエブにて反射された前記検出光を受け取り、受け取った前記検出光の強さに応じた検出信号を出力する受光器と、
前記受光器からの前記検出信号に基づき、前記ウエブ上の前記バンドを判別するバンド判定器と
を具備し、
前記バンド判定器は、前記検出信号の立ち上がり速さを表す立ち上がり判定基準を含み、前記検出信号の変化が前記立ち上がり判定基準を満たしたとき、バンドの存在を示すバンド信号を発生することを特徴とするバンド検出センサ。 - 前記検出光は、非可視光であることを特徴とする請求項1に記載のバンド検出センサ。
- 前記投光器の光軸と前記ウエブの前記片面とのなす角度は30度以下であることを特徴とする請求項1に記載のバンド検出センサ。
- 前記立ち上がり判定基準は、前記ウエブの長手方向に離間した前記ウエブ上の2つの位置と、これら位置での検出信号のレベル差とで表されることを特徴とする請求項1に記載のバンド検出センサ。
- 前記バンド判定器は、所定個数の前記検出信号から演算した移動平均値と前記立ち上がり判定基準とに基づいて前記ウエブ上の前記バンドを判別することを特徴とする請求項1に記載のバンド検出センサ。
- 前記バンド判定器は、前記検出信号の立ち下がり速さを表す立ち下がり判定基準を更に含むことを特徴とする請求項1に記載のバンド検出センサ。
- 前記ウエブが一定のピッチにて並ぶ前記バンドを有している場合、前記バンドの欠落を判定するバンド欠落判定器を更に具備し、
前記バンド欠落判定器は、前記バント信号の出力又は出力停止時毎にリセットされながらカウントされるカウンタ値が所定の閾値に到達したとき、バンド欠落信号を出力することを特徴とする請求項1に記載のバンド検出センサ。 - 前記ウエブは刻みたばこ材料を包み込むシガレット用ウエブであり、前記バンドは液状の燃料抑制剤を塗布して形成されていることを特徴とする請求項1に記載のバンド検出センサ。
- ウエブの片面にその長手方向に間隔を存して並ぶバンドを検出するバンド検出方法であって、
前記ウエブが走行経路に沿って走行するとき、前記ウエブの前記片面に検出光を照射する照射工程と、
前記ウエブにて反射された前記検出光を受け取り、受け取った前記検出光の強さに応じた検出信号を出力する出力工程と、
前記出力された検出信号に基づき、前記ウエブ上の前記バンドを判別するバンド判定工程と
を具備し、
前記バンド判定工程は、前記検出信号の立ち上がり速さを表す立ち上がり判定基準を使用し、前記検出信号の変化が前記立ち上がり判定基準を満たしたとき、バンドの存在を示すバンド信号を発生する、
ことを特徴とするバンド検出方法。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2014111121/12A RU2564240C1 (ru) | 2011-11-24 | 2011-11-24 | Датчик обнаружения полос и способ обнаружения для него |
EP11876048.7A EP2745718B1 (en) | 2011-11-24 | 2011-11-24 | Band detection sensor and detection method for same |
PCT/JP2011/077042 WO2013076840A1 (ja) | 2011-11-24 | 2011-11-24 | バンド検出センサ及びその検出方法 |
ES11876048.7T ES2639912T3 (es) | 2011-11-24 | 2011-11-24 | Sensor de detección de bandas y método de detección para el mismo |
CN201180074193.XA CN103889256B (zh) | 2011-11-24 | 2011-11-24 | 条纹检测传感器及其检测方法 |
JP2013545715A JP5630887B2 (ja) | 2011-11-24 | 2011-11-24 | バンド検出センサ及びその検出方法 |
PL11876048T PL2745718T3 (pl) | 2011-11-24 | 2011-11-24 | Czujnik wykrywający pasma i metoda wykrywania pasm |
US14/178,438 US9013697B2 (en) | 2011-11-24 | 2014-02-12 | Band detection sensor and detection method therefor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2011/077042 WO2013076840A1 (ja) | 2011-11-24 | 2011-11-24 | バンド検出センサ及びその検出方法 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/178,438 Continuation US9013697B2 (en) | 2011-11-24 | 2014-02-12 | Band detection sensor and detection method therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013076840A1 true WO2013076840A1 (ja) | 2013-05-30 |
Family
ID=48469319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/077042 WO2013076840A1 (ja) | 2011-11-24 | 2011-11-24 | バンド検出センサ及びその検出方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US9013697B2 (ja) |
EP (1) | EP2745718B1 (ja) |
JP (1) | JP5630887B2 (ja) |
CN (1) | CN103889256B (ja) |
ES (1) | ES2639912T3 (ja) |
PL (1) | PL2745718T3 (ja) |
RU (1) | RU2564240C1 (ja) |
WO (1) | WO2013076840A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITUB20155673A1 (it) * | 2015-11-18 | 2017-05-18 | Gd Spa | Unita di ispezione di un elemento allungato. |
ITUB20155646A1 (it) * | 2015-11-18 | 2017-05-18 | Gd Spa | Metodo di ispezione di un elemento allungato. |
CN105277998B (zh) * | 2015-11-25 | 2018-07-13 | 龙岩烟草工业有限责任公司 | 鼓轮负压孔堵塞率的检测方法和系统 |
JP6969104B2 (ja) | 2017-01-24 | 2021-11-24 | オムロン株式会社 | センサ、およびセンサのしきい値設定方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0157949B2 (ja) * | 1985-10-07 | 1989-12-08 | Nippon Tobacco Sangyo | |
JP2006090802A (ja) * | 2004-09-22 | 2006-04-06 | Jt Engineering Inc | 欠陥検査装置 |
JP3980267B2 (ja) | 1997-07-11 | 2007-09-26 | フィリップ・モーリス・プロダクツ・インコーポレイテッド | バンド検査を含むシガレット製造機 |
JP2010531151A (ja) * | 2007-06-28 | 2010-09-24 | フィリップ・モーリス・プロダクツ・ソシエテ・アノニム | チョークレベルが上昇したパターン付き包装紙 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2332715A1 (fr) * | 1975-11-27 | 1977-06-24 | Arenco Decoufle Sa Fse | Procede et dispositif pour verifier des cigarettes finies ou autres produits similaires |
IT1233298B (it) * | 1989-01-13 | 1992-03-26 | Gd Spa | Sistema per il controllo di estremita' di gruppi di sigarette |
DE19921721A1 (de) * | 1999-05-12 | 2000-11-16 | Focke & Co | Verfahren und Vorrichtung zum Prüfen von Zigarettenköpfen |
US6097482A (en) * | 1999-06-08 | 2000-08-01 | Philip Morris Incorporated | High speed flaw detecting system for reflective material |
US7239588B2 (en) * | 2002-05-30 | 2007-07-03 | Matsushita Electric Industrial Co., Ltd. | Method and apparatus for detecting foreign body on object surface, and optical disk apparatus |
TWI239817B (en) * | 2002-12-20 | 2005-09-21 | Japan Tobacco Inc | Rolling paper inspection device and tobacco rolled up device |
US7117871B2 (en) * | 2002-12-20 | 2006-10-10 | R.J. Reynolds Tobacco Company | Methods for manufacturing cigarettes |
EP1611804B1 (en) * | 2003-04-07 | 2011-10-12 | Japan Tobacco Inc. | Cigarette making machine and method |
JP5334959B2 (ja) * | 2007-05-24 | 2013-11-06 | フィリップ・モーリス・プロダクツ・ソシエテ・アノニム | 皺防止剤でパターンが付けられた包装紙 |
DE102009016499A1 (de) * | 2009-04-08 | 2010-10-21 | Hauni Maschinenbau Ag | Verfahren zur optischen Kontrolle eines Umhüllungspapierstreifens der Tabak verarbeitenden Industrie |
WO2012056568A1 (ja) * | 2010-10-29 | 2012-05-03 | 日本たばこ産業株式会社 | 塗工紙の検査システム |
-
2011
- 2011-11-24 RU RU2014111121/12A patent/RU2564240C1/ru active
- 2011-11-24 CN CN201180074193.XA patent/CN103889256B/zh not_active Expired - Fee Related
- 2011-11-24 ES ES11876048.7T patent/ES2639912T3/es active Active
- 2011-11-24 EP EP11876048.7A patent/EP2745718B1/en active Active
- 2011-11-24 JP JP2013545715A patent/JP5630887B2/ja active Active
- 2011-11-24 WO PCT/JP2011/077042 patent/WO2013076840A1/ja active Application Filing
- 2011-11-24 PL PL11876048T patent/PL2745718T3/pl unknown
-
2014
- 2014-02-12 US US14/178,438 patent/US9013697B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0157949B2 (ja) * | 1985-10-07 | 1989-12-08 | Nippon Tobacco Sangyo | |
JP3980267B2 (ja) | 1997-07-11 | 2007-09-26 | フィリップ・モーリス・プロダクツ・インコーポレイテッド | バンド検査を含むシガレット製造機 |
JP2006090802A (ja) * | 2004-09-22 | 2006-04-06 | Jt Engineering Inc | 欠陥検査装置 |
JP2010531151A (ja) * | 2007-06-28 | 2010-09-24 | フィリップ・モーリス・プロダクツ・ソシエテ・アノニム | チョークレベルが上昇したパターン付き包装紙 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2745718A4 |
Also Published As
Publication number | Publication date |
---|---|
CN103889256A (zh) | 2014-06-25 |
PL2745718T3 (pl) | 2018-02-28 |
CN103889256B (zh) | 2016-05-18 |
JP5630887B2 (ja) | 2014-11-26 |
US9013697B2 (en) | 2015-04-21 |
RU2564240C1 (ru) | 2015-09-27 |
EP2745718A1 (en) | 2014-06-25 |
ES2639912T3 (es) | 2017-10-30 |
EP2745718B1 (en) | 2017-06-28 |
EP2745718A4 (en) | 2015-08-12 |
US20140168653A1 (en) | 2014-06-19 |
JPWO2013076840A1 (ja) | 2015-04-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5630887B2 (ja) | バンド検出センサ及びその検出方法 | |
AU2009301879B2 (en) | Smoke detector | |
US20140285817A1 (en) | Limited reflection type photoelectric sensor | |
KR102172593B1 (ko) | 다공성 필름의 측정 | |
CA2884524C (en) | Window contamination sensor for optical detection systems | |
CN104392577A (zh) | 一种基于双波长散射信号的气溶胶粒径传感方法及其在火灾烟雾探测中的应用 | |
US10061034B2 (en) | Signal processing device and noise strength determining method | |
US9277767B2 (en) | Device for producing cigarettes in the tobacco processing industry and a method therefore | |
JP6420651B2 (ja) | 光電式煙感知器 | |
JP2010204059A (ja) | 雨滴検出装置及び車載用監視装置 | |
JP4771795B2 (ja) | 光測距装置 | |
JP2008241535A (ja) | レーザ監視装置 | |
JP6614827B2 (ja) | 測長装置および物品製造方法 | |
US20090094946A1 (en) | Sensor system and method for web manufacturing | |
US20080239325A1 (en) | Optical sensing methods and apparatus | |
US20160077208A1 (en) | Method for optically measuring distances in the near and far range | |
JP2006322932A (ja) | 信号検出回路 | |
JP5415331B2 (ja) | 減光式煙感知器 | |
JP6948703B2 (ja) | 光学監視装置 | |
JP7067332B2 (ja) | レーザレーダシステム | |
ATE398292T1 (de) | Reflexionslichtschranke mit zusatzstrahlungsquelle zum nachweis von objekten in einem überwachungsbereich | |
JP2006322912A (ja) | レーザ測長器およびレーザ測長方法 | |
JP6790605B2 (ja) | 紙幣識別装置 | |
JP2013072834A5 (ja) | ||
JP2022180033A (ja) | 光学式間隙測定装置及び光学式間隙測定方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11876048 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2013545715 Country of ref document: JP Kind code of ref document: A |
|
REEP | Request for entry into the european phase |
Ref document number: 2011876048 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011876048 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2014111121 Country of ref document: RU Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |