CN113261014A - Paper quantity detection method and paper quantity detection device - Google Patents
Paper quantity detection method and paper quantity detection device Download PDFInfo
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- CN113261014A CN113261014A CN201980073490.9A CN201980073490A CN113261014A CN 113261014 A CN113261014 A CN 113261014A CN 201980073490 A CN201980073490 A CN 201980073490A CN 113261014 A CN113261014 A CN 113261014A
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
- G06M7/00—Counting of objects carried by a conveyor
- G06M7/02—Counting of objects carried by a conveyor wherein objects ahead of the sensing element are separated to produce a distinct gap between successive objects
- G06M7/06—Counting of flat articles, e.g. of sheets of paper
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Abstract
A paper quantity detection method comprises the following steps: stacking a plurality of sheets (30) on a support (10) and making the stacked sheet set have a step part (S101); emitting light (S102) toward the step portion along the stacking direction of the sheets (30) by using a light emitter (21); receiving the emitted light with a light receiver (22) (S103); the number of sheets (30) is calculated from the light received by the light receiver (22) (S104). A paper quantity detection device is also disclosed. The measuring process is not influenced by the material of the paper (30) or the material of other parts, and is not interfered by electric signals, and the measurement is stable.
Description
The invention relates to the technical field of paper quantity detection, in particular to a paper quantity detection method and a paper quantity detection device.
The prior art paper quantity detection methods generally include the following methods: the detection method has the advantages that the detection of the number of the paper sheets is realized through camera shooting analysis, the detection of the number of the paper sheets is realized through ultrasonic detection of paper density analysis thickness, and the detection of the number of the paper sheets is realized through a rolling counting mode, however, the existing detection methods have the defects in the concrete application, and are specifically embodied as follows: 1) in the method, the paper quantity detection is realized by shooting and analyzing the camera, and the detection mode has high system cost and high calculation capacity requirement; 2) in the method, the number of the paper sheets is detected by detecting the paper density and analyzing the thickness through ultrasonic waves, the system cost is high in the detection mode, and the test result deviation is caused by the density difference of the paper sheets with different materials; 3) in the method, the number of the paper is detected in a rolling counting mode, and the detection mode cannot realize static detection and has limited application scenes.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a paper quantity detection method and a paper quantity detection device, wherein the measurement process is not influenced by the material of paper or the material of other parts, is not interfered by an electric signal and is stable in measurement.
The invention is realized by adopting the following technical scheme:
a paper quantity detection method comprises the following steps:
a step portion of a stacked paper sheet set in which a plurality of paper sheets are stacked on a holder;
emitting light toward the step portion along a direction in which the sheets are stacked with a light emitter;
receiving the emitted light with a light receiver;
and calculating the number of the paper sheets according to the light received by the light receiver.
Further, the emitted light is red light (infrared light) or green light or blue light or ultraviolet light.
Further, the step portion of the stacked paper sheet set in which the plurality of paper sheets are stacked on the holder specifically includes: a plurality of paper sheets are stacked on the support, and the stacked paper sheet set is provided with a stepped through hole or a stepped edge.
Further, calculating the number of sheets of paper according to the light received by the light receiver specifically includes: according to the formula
T general assemblyRefers to the luminous flux emitted by the light emitter;
T ithe light flux transmitted through the paper is emitted by a light emitter received by a light receiver after the page i is turned over;
R ithe light flux is reflected by the paper after the light emitter received by the light receiver irradiates the paper after the i pages are turned over;
n is the total number of sheets of paper, niThe number of the sheets is reduced after the ith page is turned;
n is the number of remaining sheets after the number of sheets turned over by the ith page is reduced.
The invention also provides a paper quantity detection device, which is used for realizing the paper quantity detection method, and the paper quantity detection device comprises a support for placing paper, a light emitter for emitting light towards the paper, a light receiver for receiving the light and a processor for calculating the paper quantity according to the luminous flux of the light received by the light receiver.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, by limiting the structure or the arrangement mode of the paper, when the number of the paper is changed, the number of the output paper can be calculated by the light quantity processor received by the light receiver, the light emitter and the light receiver are not influenced by the material of the paper or the material of other parts in the measuring process, and are not interfered by electric signals, the measurement is stable, and the large-scale popularization can be realized.
FIG. 1 is a flow chart of a method for detecting the number of sheets according to an embodiment of the present invention;
FIG. 2 is a schematic view of a viewing angle of a sheet placed on the sheet quantity detection apparatus according to an embodiment of the sheet quantity detection method of the present invention;
FIG. 3 is a schematic structural diagram of another view angle of a sheet placed on the sheet quantity detection apparatus after the shielding member and the light path blocking structure are removed according to the embodiment of the sheet quantity detection method of the present invention;
FIG. 4 is a schematic structural diagram of a second embodiment of a method for detecting a quantity of paper sheets according to the present invention;
FIG. 5 is a schematic structural diagram of a second embodiment of a method for detecting the number of sheets according to the present invention, in which sheets are placed on a sheet number detection device after removing a holder, a shielding member and a light receiver;
FIG. 6 is a schematic structural diagram of a third embodiment of a method for detecting the number of sheets according to the present invention;
FIG. 7 is a schematic structural diagram of a third embodiment of a method for detecting the number of sheets according to the present invention, in which sheets are placed on a sheet number detection device after removing a bracket, a shielding member and a light emitter;
FIG. 8 is a schematic structural diagram of a fourth embodiment of a method for detecting the number of sheets according to the present invention;
FIG. 9 is a schematic structural diagram of a sheet quantity detection apparatus with the bracket, the shielding member and the light emitter removed according to a fourth embodiment of the sheet quantity detection method of the present invention;
FIG. 10 is a schematic structural diagram of a viewing angle of a sheet placed on the sheet quantity detection apparatus according to the fifth embodiment of the sheet quantity detection method of the present invention;
FIG. 11 is a schematic structural diagram of another viewing angle of a sheet placed on the sheet quantity detection apparatus after removing the shielding member and the light path blocking structure according to the fifth embodiment of the sheet quantity detection method of the present invention;
FIG. 12 is a schematic structural diagram of a device for detecting the number of sheets according to a sixth embodiment of the method for detecting the number of sheets of paper of the present invention;
FIG. 13 is a schematic structural diagram of a sheet number detection apparatus with the bracket, the shielding member and the light receiver removed according to a sixth embodiment of the sheet number detection method of the present invention;
fig. 14 is a schematic connection diagram of an electronic control element in the paper number detection device according to the embodiment of the present invention.
In the figure:
10. a support; 11. a base; 12. a support; 121. a vertical support arm; 122. a transverse support arm; 20. an optical sensor; 21. a light emitter; 22. an optical receiver; 30. paper; 31. opening a hole; 40. a processor; 50. a shield; 60. an optical path blocking structure; 61. a protective cover; 62. a mirror.
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
As shown in fig. 1 to 14, there is provided a sheet number detection method according to an embodiment of the present invention, including the steps of:
s101, stacking a plurality of sheets 30 on the holder 10, and forming a stacked sheet set having a step portion, and stacking a plurality of sheets 30 on the holder 10, and forming a stacked sheet set having a step portion specifically include: a plurality of sheets of paper 30 are stacked on the holder 10 and the stacked sheet set has a stepped through-hole or a stepped edge. It is to be understood that the stacking of the plurality of sheets 30 on the support 10 includes: the sheets are previously stacked and then placed on the support, or the sheets 30 are stacked directly on the support 10.
Specifically, a plurality of paper sheets 30 with different sizes of the openings 31 are stacked on the support 10 in a manner that the sizes of the openings 31 are sequentially increased or decreased, or a plurality of paper sheets 30 are stacked on the support 10 in a staggered manner in a stepped or inverted stepped manner at one side edge, and a jig can be used in the process of specifically placing the paper sheets 30;
s102, using the light emitter 21 to emit light toward the step portion along the direction in which the sheets 30 are stacked, specifically, using the light emitter 21 to emit light toward the open hole 31 of the sheet 30 or the stepped edge of the sheet 30 or the reverse stepped edge of the sheet 30 in a manner perpendicular to the direction in which the sheets 30 are stacked.
And S103, receiving the emitted light by using the light receiver 22, specifically, receiving the light irradiated by the light emitter 21 reflected by the paper 30 by using the light receiver 22, or receiving the light emitted by the light emitter 21 and transmitted through the paper 30 by using the light receiver 22.
S104, calculating the number of the sheets 30 according to the light received by the light receiver 22, specifically, when the number of the sheets 30 is reduced, collecting the luminous flux formed by the light on the light emitter 21 and the luminous flux formed by the light on the light receiver 22 by the processor 40, and calculating the number of the output sheets 30, where the light emitter 21 and the light receiver 22 in this embodiment are collectively referred to as the optical sensor 20, since the external natural light entering the area of the optical sensor 20 may affect the detection of the luminous flux, for this, the light with a specific wavelength may be selected as the emission light, in this embodiment, the emission light is light with a specific wavelength, and the emission light may be red light (infrared light) or green light or blue light or ultraviolet light.
By selecting light rays (such as infrared light) with specific wavelengths as emission light rays, compared with the natural light in which only light rays (such as infrared light) with specific wavelengths can interfere detection, the interference amount of the natural light can be greatly reduced; meanwhile, the luminous flux of the light (infrared light) with a specific wavelength of the optical sensor 20 is properly increased, so that the interference amount in the natural light is far smaller than the luminous flux of the optical sensor 20, and at the moment, the interference can be ignored.
The core of the method for detecting the number of sheets of paper provided by the embodiment of the invention is to use the optical sensor 20 to detect the change of the light flux by the processor 40 to judge the number of sheets of paper 30. Specifically, the light emitter 21 emits light to the sheet 30, the light passes through the step portion of the sheet 30, part of the light is blocked, and the light receiver 22 receives the light irradiated from the light emitter 21 reflected by the sheet 30; or the light is transmitted through the sheet 30 directly to the light receiver 22 for receiving the transmitted light. By designing the sheets 30, the processor 40 detects a change in the amount of light flux when the number of sheets 30 changes, and the number of sheets 30 is converted from the change in the amount of light flux.
In this embodiment, calculating the number of the sheets 30 according to the light received by the light receiver 22 specifically includes: according to the formula
Or
Calculating the number of remaining sheets 30;
wherein, TGeneral assemblyRefers to the luminous flux emitted by the light emitter 21;
R general assemblyThe light flux is the reflected light flux after the light emitted by the light emitter 21 irradiates the paper 30 in the state of no page turning;
T irefers to the light flux transmitted through the paper 30 and emitted by the light emitter 21 received by the light receiver 22 after the page i is turned over;
R ithe light flux is reflected by the paper 30 after the light emitter 21 received by the light receiver 22 irradiates the paper 30 after the i pages are turned over;
n is the total number of sheets of paper 30, niIt means the number of sheets 30 decreased after turning the ith page;
n is the number of sheets 30 remaining after the number of sheets 30 is reduced after the i-th page is turned over.
Specifically, when the light receiver 22 is used to receive the light emitted from the light emitter 21 reflected by the sheet 30 in step S103, the number of sheets 30 is determined by the formula
Calculation output, formula
Is derived according to the following formula:
from the formula TGeneral assembly＝R General assembly＝T i+R iCan be pushed out of Ri＝T General assembly-T i；
Will be a formula
Substituted into the last formula Ri＝T General assembly-T iInternal, derivable formula
And then push out
Will be provided with
Substituting the formula N-NiPerforming the following steps;
to obtain
Specifically, when the light receiver 22 is used to receive the light emitted by the light emitter 21 and passing through the holes of the paper 30 in step S103, the number of the paper 30 is determined by the formula
Calculation output, formula
Is derived according to the following formula:
by the formula
Can be pushed out
Will be provided with
Substituting the formula N-NiPerforming the following steps;
therefore, the number of sheets 30
The invention provides six specific embodiments of the paper quantity detection method, which are specifically as follows,
embodiment one of the paper quantity detection method:
as shown in fig. 2 to 3, the stacking of the plurality of sheets 30 on the holder 10 and the stacked sheet set having the step portion specifically includes: a plurality of sheets of paper 30 with different sizes of the open holes 31 are stacked on the support 10 in a manner that the sizes of the open holes 31 are sequentially increased from top to bottom, wherein the size of the open hole 31 is larger at one end closer to the light emitter 21; the emitting light toward the step portion in the direction in which the sheets of paper 30 are stacked by the light emitter 21 specifically includes: the light emitter 21 emits light from the lower part of the paper 30 to the opening 31 of the paper 30, and the light is shielded after encountering the paper 30; the receiving of the emitted light with the light receiver 22 specifically includes: the light receiver 22 receives the light emitted from the light emitter 21 to the paper 30 from the lower part of the paper 30 and then reflected by the paper 30, when the number of the paper 30 is reduced, the light flux received by the light receiver 22 is reduced, the processor 40 can convert the number of the paper 30 by the change of the light flux, meanwhile, the light path blocking structure 60 arranged above the paper 30 can prevent external light from entering the detection area of the optical sensor 20 to affect the detection result, the reflecting mirror 62 is arranged in the protective cover 61 at the position corresponding to the opening 31, and the light penetrating through the opening 31 of the paper 30 is reflected to the inner side wall of the protective cover 61 from the upper part of the paper 30 by the reflecting mirror 62, so that the light penetrating through the opening 31 of the paper 30 is prevented from being reflected to the light receiver 22 by the protective cover 61.
In this embodiment, the support 10 includes a base 11, a shielding member 50 and a light path blocking structure 60 for blocking light, the light emitter 21 is installed on the base 11, the light receiver 22 is also installed on the base 11 and is arranged side by side with the light emitter 21, the light path blocking structure 60 includes a vertical support arm 121 connected with the base 11, a protective cover 61 connected with the vertical support arm 121 and arranged above the base 11 at an interval, and a reflector 62 arranged in the protective cover 61 and arranged in an inclined manner, the shielding member 50 is connected with the bottom of the protective cover 61, and when in specific use, the shielding member 50 abuts against the paper 30 and applies a squeezing force to the paper 30; when the number of the sheets 30 is reduced, the shielding member 50 may be extended along the stacking direction of the sheets 30 to maintain the abutment against the sheets 30, so as to ensure that external light cannot enter the opening 31 from the side of the shielding member 50, and the shielding member 50 may be a spring or other elastic member.
Example two of the paper quantity detection method:
as shown in fig. 4 to 5, the stacked sheet set in which a plurality of sheets 30 are stacked on a holder 10 has a step portion, and specifically includes: a plurality of sheets of paper 30 having different sizes of openings 31 are stacked on the support 10 in such a manner that the sizes of the openings 31 are sequentially increased from top to bottom, wherein the size of the opening 31 is increased at one end closer to the light emitter 21. The emitting light toward the step portion in the direction in which the sheets of paper 30 are stacked by the light emitter 21 specifically includes: the light emitter 21 emits light from the lower side of the paper 30 toward the opening 31 of the paper 30, the light is blocked after encountering the paper 30, the light receiver 22 is located at the other end of the paper 30, part of the light is directly emitted onto the light receiver 22 along the opening 31, the light receiver 22 detects the luminous flux formed by the light emitted from the light emitter 21 through the opening 31 of the paper 30, and the receiving of the emitted light by the light receiver 22 specifically includes: the light receiver 22 receives the light emitted by the light emitter 21 and passing through the opening 31 of the paper 30 from above the paper 30, when the number of the paper 30 is reduced, the blocking of the paper 30 to the light emitted by the light emitter 21 is reduced, the light flux transmitted by the light emitter 21 is increased, and the processor 40 can convert the change of the number of the paper 30 through the change of the light flux.
In this embodiment, the support 10 includes a base 11, a bracket 12 and the shielding member 50 as described above, the bracket 12 includes a vertical arm 121 connected to the base 11 and a horizontal arm 122 connected to the vertical arm 121 and spaced above the base 11, and the shielding member 50 is connected to the bottom of the horizontal arm 122. The light emitter 21 is mounted on the base 11, and the light receiver 22 is mounted on the transverse arm 122 and aligned with the light emitter 21.
Example three of the paper number detection method:
as shown in fig. 6 to 7, the stacking of the plurality of sheets 30 on the holder 10 and the stacked sheet set having the step portion specifically includes: a plurality of paper sheets 30 with different sizes of the open pores 31 are stacked on the support 10 in a manner that the sizes of the open pores 31 are sequentially increased from top to bottom, wherein the open pores 31 of the paper sheets 30 are larger on the side closer to the light receiver 22; the emitting light toward the step portion in the direction in which the sheets of paper 30 are stacked by the light emitter 21 specifically includes: the light emitter 21 emits light from the upper side of the paper 30 to the paper 30, the light is shielded after encountering the paper 30, and part of the light reaches the light receiver 22 along the opening 31; the receiving of the emitted light with the light receiver 22 specifically includes: the light receiver 22 receives the light emitted by the light emitter 21 and passing through the opening 31 of the paper 30 from the lower side of the paper 30, when the number of the paper 30 is reduced, the blocking of the paper 30 to the light emitted by the light emitter 21 is reduced, the luminous flux on the processor 40 is also increased, and the processor 40 can convert the number of the paper 30 through the luminous flux change.
In this embodiment, the support 10 includes a base 11, a bracket 12 and a shielding member 50, the bracket 12 includes a vertical arm 121 connected to the base 11 and a horizontal arm 122 connected to the vertical arm 121 and spaced above the base 11, and the shielding member 50 is connected to the bottom of the horizontal arm 122. The light emitter 21 is mounted on the transverse arm 122 and the light receiver 22 is mounted on the base 11.
Example four of the paper number detection method:
as shown in fig. 8 to 9, the stacking of the plurality of sheets 30 on the holder 10 and the stacked sheet set having the step portion specifically includes: a plurality of paper sheets 30 are sequentially staggered and stacked on the support 10 in an inverted step manner from one side edge, and light rays are shielded after encountering the paper sheets 30; the emitting light toward the step portion in the direction in which the sheets of paper 30 are stacked by the light emitter 21 specifically includes: the light emitter 21 emits light from below the sheet 30 toward the sheet 30; the receiving of the emitted light with the light receiver 22 specifically includes: the light receiver 22 receives the light flux formed by the light emitted by the light emitter 21 and passing through the paper 30 from above the paper 30, and when the number of the paper 30 is reduced, the light flux on the processor 40 is increased, and the processor 40 can convert the number of the paper 30 by the change of the light flux.
In this embodiment, the support 10 includes a base 11, a bracket 12 and a shielding member 50, the bracket 12 includes a vertical arm 121 connected to the base 11 and a horizontal arm 122 connected to the vertical arm 121 and spaced above the base 11, and the shielding member 50 is connected to the bottom of the horizontal arm 122. The light emitter 21 is mounted on the base 11, the light receiver 22 is mounted on the transverse arm 122, and meanwhile, since the width of the optical sensor 20 is too small and is located at the lower middle part of the paper 30, the vertical arm 121 also blocks external light, so that no external light enters from the position uncovered by the shielding member 50.
Example v of the paper number detection method:
as shown in fig. 10 to 11, the stacking of the plurality of sheets 30 on the holder 10 and the stacked sheet set having the step portion specifically includes: a plurality of paper sheets 30 are sequentially staggered and stacked on the support 10 in an inverted step manner from one side edge; the emitting light toward the step portion in the direction in which the sheets of paper 30 are stacked by the light emitter 21 specifically includes: the light emitter 21 emits light from the lower part of the paper 30 to the paper 30, and the light is shielded after encountering the paper 30; the receiving of the emitted light with the light receiver 22 specifically includes: the light receiver 22 receives the light flux formed by the reflected light after the light emitter 21 emits to the paper 30 from the lower part of the paper 30, when the number of the paper 30 is reduced, the light flux on the processor 40 is reduced, the processor 40 can convert the number of the paper 30 through the change of the light flux, meanwhile, the light path blocking structure 60 arranged above the paper 30 can prevent external light from entering the detection area of the optical sensor 20 and influencing the detection result, the reflecting mirror 62 is arranged in the protective cover 61 corresponding to the reverse step edge of the paper 30, the light passing through the reverse step edge of the paper 30 is reflected to the inner side wall of the protective cover 61 from the upper part of the paper 30 by the reflecting mirror 62, and therefore the light passing through the reverse step edge of the paper 30 is prevented from being reflected back to the light receiver 22 by the protective cover 61.
In this embodiment, the support 10 includes a base 11, a shielding member 50 and a light path blocking structure 60 for blocking light, the light emitter 21 and the light receiver 22 are both mounted on the base 11, the light path blocking structure 60 includes a vertical arm 121 connected to the base 11, a protecting cover 61 connected to the vertical arm 121 and spaced above the base 11, and a reflector 62 disposed in the protecting cover 61 and inclined, and the shielding member 50 is connected to the bottom of the protecting cover 61.
Example six of the paper number detection method:
as shown in fig. 12 to 13, the stacking of the plurality of sheets 30 on the holder 10 and the stacked sheet set having the step portion specifically includes: a plurality of paper sheets 30 are sequentially staggered and stacked on the support 10 in an inverted step manner from one side edge; the emitting light toward the step portion in the direction in which the sheets of paper 30 are stacked by the light emitter 21 specifically includes: the light emitter 21 emits light from the upper side of the paper 30 to the paper 30, and the light is shielded after encountering the paper 30; the receiving of the emitted light with the light receiver 22 specifically includes: the light receiver 22 receives the luminous flux formed by the light emitted from the light emitter 21 and passing through the paper 30 from the lower side of the paper 30, and the luminous flux on the processor 40 increases when the number of the paper 30 decreases, and the processor 40 can convert the number of the paper 30 by the change of the luminous flux.
In this embodiment, the support 10 includes a base 11, a bracket 12 and a shielding member 50, the bracket 12 includes a vertical arm 121 connected to the base 11 and a horizontal arm 122 connected to the vertical arm 121 and spaced above the base 11, and the shielding member 50 is connected to the bottom of the horizontal arm 122. The light emitter 21 is mounted on the transverse arm 122 and the light receiver 22 is mounted on the base 11.
The present invention also provides a sheet number detecting device for implementing the sheet number detecting method as described above, the sheet number detecting device including a support 10 for placing a sheet 30, a light emitter 21 for emitting light toward the sheet 30, a light receiver 22 for receiving the light, and a processor 40 for collecting light flux of the light receiver 22 to calculate the number of output sheets 30, the light emitter 21, the light receiver 22, and the processor 40 all being mounted on the support 10, the light emitter 21, the light receiver 22, and the processor 40 all being integrated on the support 10 having a smaller volume.
The sheet number detecting apparatus has the following three embodiments,
first embodiment of the sheet number detection apparatus:
referring to fig. 2-3 and 10-11, the support 10 includes a base 11, a shielding member 50, and a light path blocking structure 60 for blocking light, the light emitter 21 and the light receiver 22 are disposed on the base 11 side by side, and the distance from the top surface of the light emitter 21 and the light receiver 22 to the bottom surface of the base 11 is less than or equal to the distance from the top surface of the base 11 to the bottom surface of the base 11, so as to prevent the paper 30 from being placed on the base 11 unstably and affecting the calculation result of the processor 40, the light path blocking structure 60 includes a vertical arm 121 connected to the base 11, a protective cover 61 connected to the vertical arm 121 and spaced above the base 11, and a reflector 62 disposed in the protective cover 61 and inclined, the protective cover 61 is made of an opaque material, the reflector 62 can turn the light 90 degrees to prevent the light transmitted from the opening 31 from being reflected vertically to affect the change of the light flux, the shielding member 50 is connected to the bottom of the protecting cover 61, and the shielding member 50 is a ring-shaped body made of shielding material.
Example two of the paper number detection device:
referring to fig. 4-5 and 8-9, the support 10 includes a base 11, a bracket 12, and a shield 50, the bracket 12 includes a vertical arm 121 connected to the base 11 and a horizontal arm 122 connected to the vertical arm 121 and spaced above the base 11, and the shield 50 is connected to the bottom of the horizontal arm 122. The light emitter 21 is mounted on the base 11, the distance from the top surface of the light emitter 21 to the bottom surface of the base 11 is smaller than or equal to the distance from the top surface of the base 11 to the bottom surface of the base 11, and the light receiver 22 is mounted on the transverse arm 122 and aligned with the light emitter 21 so as to detect the number of the paper 30.
Example three of the sheet number detection device:
referring to fig. 6-7 and 12-13, the stand 10 includes a base 11, a bracket 12, and a shield 50, the bracket 12 includes a vertical arm 121 connected to the base 11 and a horizontal arm 122 connected to the vertical arm 121 and spaced above the base 11, and the shield 50 is connected to the bottom of the horizontal arm 122. The optical receiver 22 is mounted on the base 11, the distance from the top surface of the optical receiver 22 to the bottom surface of the base 11 is less than or equal to the distance from the top surface of the base 11 to the bottom surface of the base 11, and the optical transmitter 21 is mounted on the transverse arm 122 and aligned with the optical transmitter 21.
In the embodiment of the present invention, by limiting the structure or placement mode of the paper 30, when the number of the paper 30 changes, the processor 40 can calculate the number of the output paper 30 according to the number of the light received by the light receiver 22, and the light emitter 21 and the light receiver 22 are not affected by the material of the paper 30 or the material of other parts in the measurement process, nor are interfered by electrical signals, so that the measurement is stable, and the present invention can be popularized in a large range.
It should be noted that all the directional indications (such as upper, lower, left, right, front, back, top and bottom … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components in a specific posture (as shown in the figure), and if the specific posture is changed, the directional indication is changed accordingly.
It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (18)
- A paper quantity detection method is characterized in that: the method comprises the following steps:a step portion of a stacked paper sheet set in which a plurality of paper sheets are stacked on a holder;emitting light toward the step portion along a direction in which the sheets are stacked with a light emitter;receiving the emitted light with a light receiver;and calculating the number of the paper sheets according to the light received by the light receiver.
- The method for detecting the number of sheets according to claim 1, wherein the emitted light is red light (infrared light) or green light or blue light or ultraviolet light.
- The method of detecting the number of sheets according to claim 1, wherein stacking a plurality of sheets on the holder and having a step in the stacked sheet set specifically includes: a plurality of paper sheets are stacked on the support, and the stacked paper sheet set is provided with a stepped through hole or a stepped edge.
- The method of detecting the number of sheets of paper as set forth in claim 1, wherein calculating the number of sheets of paper based on the light received by the light receiver specifically comprises: according to the formulaOr
Calculating the number of sheets, wherein,
T general assemblyRefers to the luminous flux emitted by the light emitter;T ithe light flux transmitted through the paper is emitted by a light emitter received by a light receiver after the page i is turned over;R ithe light flux is reflected by the paper after the light emitter received by the light receiver irradiates the paper after the i pages are turned over;n is the total number of sheets of paper, niThe number of the sheets is reduced after the ith page is turned;n is the number of remaining sheets after the number of sheets turned over by the ith page is reduced. - The method for detecting the number of sheets according to any one of claims 1 to 4, wherein stacking a plurality of sheets on the holder and having a step in the stacked sheet set specifically includes: a plurality of pieces of paper with different opening sizes are stacked on the support in a mode that the opening sizes are sequentially increased from top to bottom;emitting light toward the step portion along the direction in which the sheets are stacked with a light emitter specifically includes: the light emitter emits light from below the sheet toward the opening of the sheet.
- The method for detecting the number of sheets of paper as claimed in claim 5, wherein receiving the emitted light with a light receiver specifically comprises: the light receiver receives the reflected light after the light emitter emits the light to the paper from the lower part of the paper.
- The method for detecting the number of sheets of paper as claimed in claim 6, further comprising disposing a light path blocking structure above the stacked sheets of paper to block external light from reaching the light receiver through the opening and disposing a mirror in the light path blocking structure at a position corresponding to the opening to reflect light transmitted through the opening of the sheets of paper to an inner sidewall of the light path blocking structure.
- The method for detecting the number of sheets of paper as claimed in claim 5, wherein receiving the emitted light with a light receiver specifically comprises: the light receiver receives the light emitted by the light emitter and passing through the paper opening from the upper side of the paper.
- The method for detecting the number of sheets according to any one of claims 1 to 4, wherein stacking a plurality of sheets on the holder and having a step in the stacked sheet set specifically includes: a plurality of pieces of paper with different opening sizes are stacked on the support in a mode that the opening sizes are sequentially increased from top to bottom;emitting light toward the step portion along the direction in which the sheets are stacked with a light emitter specifically includes: the light emitter emits light from the upper side of the paper to the paper;receiving the emitted light with a light receiver specifically includes: the light receiver receives the light emitted by the light emitter and passing through the paper opening from the lower part of the paper.
- The method for detecting the number of sheets according to any one of claims 1 to 4, wherein stacking a plurality of sheets on the holder and having a step in the stacked sheet set specifically includes: placing a plurality of paper sheets on a support in an inverted step type manner in a staggered and overlapped manner in sequence at one side edge;emitting light toward the step portion along the direction in which the sheets are stacked with a light emitter specifically includes: the light emitter emits light from below the sheet toward the sheet.
- The method for detecting the number of sheets of paper as claimed in claim 10, wherein receiving the emitted light with a light receiver specifically comprises: the light receiver receives the light which is emitted by the light emitter and passes through the paper from the upper part of the paper.
- The method for detecting the number of sheets of paper as claimed in claim 10, wherein receiving the emitted light with a light receiver specifically comprises: the light receiver receives the light reflected by the paper after the light emitter emits the light to the paper from the lower part of the paper.
- The method of claim 12, further comprising disposing an optical path blocking structure above the stacked sheets to block external light from reaching the light receiver through an edge of the sheet at the reverse step and disposing a mirror in the optical path blocking structure corresponding to the edge of the sheet at the reverse step to reflect light passing through the edge of the sheet onto an inner sidewall of the optical path blocking structure.
- The method for detecting the number of sheets according to any one of claims 1 to 4, wherein stacking a plurality of sheets on the holder and having a step in the stacked sheet set specifically includes: placing a plurality of paper sheets on a support in an inverted step type manner in a staggered and overlapped manner in sequence at one side edge;emitting light toward the step portion along the direction in which the sheets are stacked with a light emitter specifically includes: the light emitter emits light from the upper side of the paper to the paper;receiving the emitted light with a light receiver specifically includes: the light receiver receives the light which is emitted by the light emitter and passes through the paper from the lower part of the paper.
- A sheet number detection device for implementing the sheet number detection method according to any one of claims 1 to 14, comprising a support for placing a sheet, a light emitter for emitting light toward the sheet, a light receiver for receiving light, and a processor for calculating the number of sheets based on a luminous flux of the light received by the light receiver.
- The device for detecting the quantity of paper sheets according to claim 15, wherein the support comprises a base, a shielding member and a light path blocking structure, the light emitter and the light receiver are arranged on the base side by side, the distance from the top surface of the light emitter and the light receiver to the bottom surface of the base is less than or equal to the distance from the top surface of the base to the bottom surface of the base, the light path blocking structure comprises a vertical support arm connected with the base, a protective cover connected with the vertical support arm and arranged above the base at an interval, and a reflector arranged in the protective cover and arranged obliquely, and the shielding member is connected with the bottom of the protective cover.
- The device for detecting the number of paper sheets according to claim 15, wherein the support comprises a base, a support and a shielding member, the support comprises a vertical support arm connected with the base and a horizontal support arm connected with the vertical support arm and spaced above the base, the shielding member is connected with the bottom of the horizontal support arm, the light emitter is mounted on the base, the distance from the top surface of the light emitter to the bottom surface of the base is smaller than or equal to the distance from the top surface of the base to the bottom surface of the base, and the light receiver is mounted on the horizontal support arm and aligned with the light emitter.
- The device for detecting the number of paper sheets according to claim 15, wherein the support comprises a base, a support and a shielding member, the support comprises a vertical support arm connected with the base and a horizontal support arm connected with the vertical support arm and spaced above the base, the shielding member is connected with the bottom of the horizontal support arm, the light receiver is mounted on the base, the distance from the top surface of the light receiver to the bottom surface of the base is less than or equal to the distance from the top surface of the base to the bottom surface of the base, and the light emitter is mounted on the horizontal support arm and aligned with the light emitter.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/075848 WO2020168547A1 (en) | 2019-02-22 | 2019-02-22 | Paper quantity detection method and paper quantity detection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113261014A true CN113261014A (en) | 2021-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980073490.9A Pending CN113261014A (en) | 2019-02-22 | 2019-02-22 | Paper quantity detection method and paper quantity detection device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113261014A (en) |
| WO (1) | WO2020168547A1 (en) |
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| JP4801403B2 (en) * | 2005-09-15 | 2011-10-26 | 株式会社リコー | Sheet remaining amount detection device, sheet feeding device, and image forming apparatus |
| JP2010235217A (en) * | 2009-03-30 | 2010-10-21 | Brother Ind Ltd | Image recorder |
| JP2015134657A (en) * | 2014-01-16 | 2015-07-27 | キヤノン株式会社 | Detection device of sheet loading amount, recording device and detection method of sheet loading amount |
| JP6604302B2 (en) * | 2016-10-18 | 2019-11-13 | 京セラドキュメントソリューションズ株式会社 | Image forming apparatus |
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| JPH06195532A (en) * | 1990-02-10 | 1994-07-15 | Tokyo Kikai Seisakusho Ltd | System and method for image analysis and counting |
| JPH04130596A (en) * | 1990-09-20 | 1992-05-01 | Glory Ltd | Paper sheet counter |
| JPH10329983A (en) * | 1997-05-30 | 1998-12-15 | Ricoh Co Ltd | Paper residual quantity detector |
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|---|---|
| WO2020168547A1 (en) | 2020-08-27 |
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Application publication date: 20210813 |