CN113375571A - Paper sheet identification device and printer - Google Patents
Paper sheet identification device and printer Download PDFInfo
- Publication number
- CN113375571A CN113375571A CN202110588971.2A CN202110588971A CN113375571A CN 113375571 A CN113375571 A CN 113375571A CN 202110588971 A CN202110588971 A CN 202110588971A CN 113375571 A CN113375571 A CN 113375571A
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- Prior art keywords
- light
- paper
- plate
- emitting
- resistor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41K—STAMPS; STAMPING OR NUMBERING APPARATUS OR DEVICES
- B41K3/00—Apparatus for stamping articles having integral means for supporting the articles to be stamped
- B41K3/62—Details or accessories
Abstract
The invention discloses a paper identification device and a printer, wherein the paper identification device comprises a light-emitting plate for bearing paper, the light-emitting plate is placed on the upper end surface of a stamping supporting plate, one side of the light-emitting plate, facing the stamping supporting plate, is provided with a light-emitting light source, and the light-emitting light source is used for irradiating the back surface of the paper through the light-emitting plate; a paper thickness detection module is arranged above the light emitting plate and used for receiving transmitted light of the light emitting source penetrating through the paper and judging the thickness of the paper according to the intensity of the transmitted light. The paper thickness detection module receives transmitted light of the light source penetrating through the paper and judges whether the thickness of the paper is uniform or not according to the intensity of the transmitted light; the paper thickness detection module judges whether the thickness of the paper is uniform or not by judging whether the intensities of the transmitted light at different positions of the paper are consistent or not, and accordingly, whether the paper to be stamped is abnormal or not is judged, and therefore illegal printing behaviors can be found in time.
Description
Technical Field
The invention relates to the technical field of printing and stamping, in particular to a paper identification device and a printer.
Background
At present, behaviors of illegal print use appear on the market, such as: in most cases, a single page or a few pages are stamped. The page to be stamped of the document to be stamped is placed on a stamping supporting plate of a stamping machine, a through hole larger than the size of a stamping surface is cut at the stamping position of the page to be stamped, then a piece of blank paper is placed at the bottom of the stamping page, the stamping is carried out on the stamping page, the stamping surface penetrates through the through hole and is stamped on the blank paper at the bottom, and even if the camera shoots, the blank paper cannot be found and confirmed, so that the stamping is stolen.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
Therefore, the invention provides a paper sheet identification device which can identify the behavior of stealing the seal by judging the thickness of the paper sheet of the page to be sealed.
The invention also provides a printer with the paper identification device.
A paper sheet discriminating apparatus according to an embodiment of a first aspect of the present invention includes a light emitting plate for carrying a paper sheet, the light emitting plate being placed on an upper end surface of a stamping pallet, a side of the light emitting plate facing the stamping pallet being provided with a light emitting source for irradiating a back surface of the paper sheet through the light emitting plate; the paper thickness detection module is arranged above the light emitting plate and used for receiving the transmitted light of the light emitting source, which passes through the paper, and judging the thickness of the paper according to the intensity of the transmitted light.
The paper sheet identification device according to the embodiment of the invention has at least the following beneficial effects: the light-emitting light source irradiates the back surface of the paper through the light-emitting plate, so that backlight can be formed on the back surface of the paper; the paper thickness detection module receives transmitted light of the light-emitting light source penetrating through the paper and judges whether the thickness of the paper is uniform or not according to the intensity of the transmitted light; the paper thickness detection module judges whether the thickness of the paper is uniform or not by judging whether the intensities of the transmitted light at different positions of the paper are consistent or not. On the basis that the light-emitting light source provides the transmitted light, if the thickness of the paper is uniform, the intensity of the transmitted light at different positions of the paper is approximately the same; if the thicknesses of different positions of the paper are different to a certain degree, the intensity of the transmitted light is different, and the greater the thickness difference is, the more obvious the intensity difference of the transmitted light is; the paper identification device can judge whether the thickness of the paper is uniform or not by utilizing the intensity difference of the transmitted light, and accordingly, whether the paper to be stamped is abnormal or not is judged, so that illegal printing behaviors can be found in time.
According to some embodiments of the invention, the light emitting panel is capable of diffusely reflecting transmitted light.
According to some embodiments of the present invention, the light source includes a plurality of point light sources, the light emitting plate is covered by the plurality of point light sources, and a distance between each two point light sources is equal, so that an irradiation range of the light source at least covers a bearing area of the stamping supporting plate.
According to some embodiments of the invention, the point light source is capable of emitting visible or infrared light.
According to some embodiments of the present invention, the paper thickness detection module includes a camera disposed above the light emitting panel and a verification unit electrically connected to the camera.
According to some embodiments of the present invention, the paper thickness detecting module includes a detecting plate disposed above the light emitting plate, and a side of the detecting plate facing the light emitting plate is electrically connected with a sensor and a second micro chip, the sensor and the second micro chip being electrically connected.
According to some embodiments of the present invention, the point light source is a first emitting diode emitting infrared light, the first emitting diode is connected to a light emitting control circuit, the light emitting control circuit includes a triode, a first micro-control chip, a first power source, a first resistor, a second resistor, and a third resistor, a collector of the triode is connected to an anode of the first power source through the first resistor, the collector of the triode is connected to an anode of the first emitting diode, a cathode of the first emitting diode is grounded, a base of the triode is connected to the first output pin of the first micro-control chip through the second resistor, a base of the triode is grounded through the third resistor, and an emitter of the triode is grounded.
According to some embodiments of the invention, the sensor is an infrared sensor.
According to some embodiments of the present invention, the sensor includes a power supply terminal, a ground terminal, and a signal output terminal, the detection board is further provided with a signal processing circuit, the signal processing circuit includes a second emitting diode, a second power supply, a fourth resistor, and a fifth resistor, the power supply terminal is connected to an anode of the second power supply, the ground terminal is grounded, the anode of the second emitting diode is connected to the anode of the second power supply through the fourth resistor, the cathode of the second emitting diode is connected to the signal output terminal, and the signal output terminal is connected to the first input pin of the second micro-control chip through the fifth resistor.
A printer according to a second aspect of the present invention includes a stamp plate and a sheet recognizing device according to any one of the above-described first aspects of the present invention, the sheet recognizing device being provided on an upper end surface of the stamp plate.
The printer according to the embodiment of the invention has at least the following beneficial effects: by adopting the paper sheet identification device according to any one of the above technical solutions, all the advantages of the paper sheet identification device according to any one of the above embodiments are achieved, and are not listed here.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of a paper sheet discriminating apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a paper sheet discriminating apparatus according to another embodiment of the present invention;
FIG. 3 is a schematic circuit diagram of a lighting control circuit according to an embodiment of the present invention;
fig. 4 is a circuit schematic diagram of a signal processing circuit according to an embodiment of the present invention.
Reference numerals:
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that, in relation to the orientation description, the terms "central, longitudinal, transverse, length, width, thickness, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, circumferential, radial, circumferential" and the like indicate an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and simplicity of description, and does not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "disposed," "arranged," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A sheet identifying device according to an embodiment of the first aspect of the present invention is described below with reference to fig. 1 to 4.
As shown in fig. 1, the paper sheet recognition apparatus according to the embodiment of the present invention includes a light emitting plate 200 for carrying paper sheets 100, the light emitting plate 200 being placed on an upper end surface of a stamping pallet 400, a side of the light emitting plate 200 facing the stamping pallet 400 being provided with a light emitting source 300; a paper thickness detection module 500 is arranged above the light emitting panel 200; the light emitting source 300 is for irradiating the back surface of the paper 100 through the light emitting panel 200 so that a backlight can be formed on the back surface of the paper 100; in the present application, the sheet 100 includes, but is not limited to, a sheet of paper such as a bill, a document, etc. that needs to be stamped; the paper thickness detection module 500 is used for receiving the transmitted light of the light-emitting source 300 passing through the paper 100 and judging whether the thickness of the paper 100 is uniform according to the intensity of the transmitted light; in the present application, the sheet thickness detection module 500 determines whether the thickness of the sheet 100 is uniform by determining whether the intensities of the transmitted light at different positions of the sheet 100 are consistent.
Specifically, on the basis that the light-emitting light source 300 provides the transmitted light, if the thickness of the sheet 100 is uniform, the intensity of the transmitted light at different positions of the sheet 100 is also approximately the same; if the thicknesses of different positions of the paper 100 are different to a certain extent, the intensity of the transmitted light will be different, and the greater the thickness difference, the more obvious the intensity difference of the transmitted light will be; on the contrary, whether the thickness of the paper 100 is uniform or not can be judged by utilizing the intensity difference of the transmitted light, and whether the paper 100 to be stamped is abnormal or not can be judged according to the thickness difference, so that the behavior of illegal printing can be found in time.
For example, in the case of a stamp for theft, the light emitting panel 200 is placed on the upper end surface of the stamp supporting plate 400 by using the above-mentioned sheet discriminating device, laying a complete piece of white paper on the upper end surface of the light-emitting plate 200, then placing a page to be stamped on the white paper, cutting a through hole larger than the stamping surface at the stamping position of the page to be stamped, irradiating the back surface of the white paper by the light-emitting source 300 on the light-emitting plate 200 through the light-emitting plate 200, receiving the transmission light of the light-emitting source 300 penetrating through the white paper and the page to be stamped by the paper thickness detection module 500, wherein the thickness of the paper at the stamping position is equal to the thickness of the white paper, the thickness of the paper at the rest positions is equal to the sum of the thicknesses of the paper to be stamped and the paper blank, and the light intensity of the transmitted light received by the paper thickness detection module 500 at the stamping position is greater than that received at the rest positions, so that the condition that the paper to be stamped is abnormal is judged, and a warning is given.
In specific application, a user can also set a range of intensity difference values of the transmitted light, and if the intensity difference values of the transmitted light at different positions detected by the paper thickness detection module 500 are within the range, the page to be stamped is proved to be normal, and stamping operation can be performed; if the intensity difference values of the transmitted light at different positions detected by the paper thickness detection module 500 are not within the range, it is proved that the page to be stamped is abnormal, and the stamping operation is terminated. The range of the intensity difference of the transmitted light can be adjusted according to actual conditions, and is not particularly limited in the present application.
In some embodiments of the present invention, the light-emitting plate 200 can diffuse the transmitted light, so that the light can be uniformly irradiated on the back surface of the paper 100.
In some embodiments of the present invention, the light source 300 includes a plurality of point light sources, the plurality of point light sources are distributed over the light-emitting plate 200, and the distance between each two point light sources is equal, so that the illumination range of the light source 300 at least covers the bearing area of the stamping supporting plate 400.
In some embodiments of the present invention, the point light source includes but is not limited to an LED lamp, and in the present application, the point light source may emit visible light with a wavelength of 400-780 nm, or may emit infrared light with a wavelength of 780-2526 nm.
When the point light source emits visible light, as shown in fig. 2, the paper thickness detection module 500 includes a camera 530 and a verification unit 540, the camera 530 is disposed above the light-emitting plate 200, the camera 530 is electrically connected with the verification unit 540, the camera 530 collects image information of a page to be stamped and sends the image information to the verification unit 540, the verification unit 540 analyzes the image information of the page to be stamped to detect a light spot parameter of the page to be stamped, the uniformity of light intensity of the page to be stamped is determined according to the light spot parameter, and whether the page to be stamped is abnormal or not is determined according to the uniformity of the light intensity.
When the point light source emits infrared light, as shown in fig. 1, the paper thickness detection module 500 includes a detection board 510, a sensor 520, and a second micro control chip MCU2 (not shown in fig. 1), the detection board 510 is disposed above the light emitting board 200, the sensor 520 and the second micro control chip MCU2 are disposed on a side of the detection board 510 facing the light emitting board 200, the sensor 520 and the second micro control chip MCU2 are electrically connected, the sensor 520 and the second micro control chip MCU2 are simultaneously electrically connected to the detection board 510, the sensor 520 receives the transmitted light from the light emitting light source 300 and transmits a level signal generated by the transmitted light to the second micro control chip MCU2, and the second micro control chip MCU2 determines the light intensity of the transmitted light according to the level signal. In the application, aiming at different positions of the page to be stamped, the detection board 510 can be provided with a plurality of sensors 520 according to actual conditions, the sensors 520 are electrically connected with the second micro control chip MCU2, the second micro control chip MCU2 receives level signals of the sensors 520 and judges whether the level signals are approximately the same, if the level signals are the same, the page to be stamped is proved to be abnormal, and stamping operation can be carried out; if not, the page to be sealed is proved to have abnormity, and the sealing operation is terminated.
In some embodiments of the invention, the point light source is a first emitting diode D1 that emits infrared light. As shown in fig. 3, the first emitting diode D1 is connected to a light emitting control circuit, the light emitting control circuit includes a triode Q, a first micro-control chip MCU1, a first power supply (+5V), a first resistor R1, a second resistor R2 and a third resistor R3, a collector of the triode Q is connected to an anode of the first power supply through a first resistor R1, a collector of the triode Q is connected to an anode of a first emitting diode D1, a cathode of the first emitting diode D1 is grounded, a base of the triode Q is connected to a first output pin of the first micro-control chip MCU1 through a second resistor R2, a base of the triode Q is grounded through a third resistor R3, and an emitter of the triode Q is grounded.
In some embodiments of the present invention, as shown in fig. 4, the sensor 520 is an infrared sensor, and the sensor 520 includes a power terminal VCC, a ground terminal GND, and a signal output terminal Out. The detection board 510 is further provided with a signal processing circuit, the signal processing circuit comprises a second emitting diode D2, a second power supply (+12V), a fourth resistor R4 and a fifth resistor R5, a power supply terminal VCC is connected with the anode of the second power supply, a ground terminal GND is grounded, the anode of the second emitting diode D2 is connected with the anode of the second power supply through the fourth resistor R4, the cathode of the second emitting diode D2 is connected with a signal output terminal Out, and the signal output terminal Out is connected with a first input pin of the second micro-control chip MCU2 through the fifth resistor R5. In the present application, one sensor 520 is configured with a set of signal processing circuits.
The user printing machine according to the second aspect of the present invention includes a stamp plate 400 and a paper sheet discriminating device according to any one of the above-described first aspect of the present invention, the paper sheet discriminating device being provided on an upper end surface of the stamp plate 400.
With the paper sheet identification device in the above technical solution, all the advantages of the paper sheet identification device in any of the above embodiments are achieved, and are not listed here.
Other configurations and operations of a user printing machine according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A paper identification device is characterized by comprising a light-emitting plate for bearing paper, wherein the light-emitting plate is placed on the upper end face of a stamping supporting plate, one side of the light-emitting plate, facing the stamping supporting plate, is provided with a light-emitting light source, and the light-emitting light source is used for irradiating the back face of the paper through the light-emitting plate; the paper thickness detection module is arranged above the light emitting plate and used for receiving the transmitted light of the light emitting source, which passes through the paper, and judging the thickness of the paper according to the intensity of the transmitted light.
2. The paper sheet discriminating device as set forth in claim 1 wherein the light emitting plate diffusely reflects the transmitted light.
3. The paper sheet recognition device according to claim 1, wherein the light emitting source includes a plurality of point light sources, the light emitting plate is filled with the plurality of point light sources, and a distance between each two of the point light sources is equal, so that an irradiation range of the light emitting source at least covers a bearing area of the stamp supporting plate.
4. The paper sheet recognition device of claim 3, wherein the point light source is capable of emitting visible light or infrared light.
5. The paper sheet recognition device according to claim 4, wherein the paper sheet thickness detection module includes a camera disposed above the light emitting plate and a verification unit electrically connected to the camera.
6. The paper sheet discriminating device as claimed in claim 4, wherein the paper sheet thickness detecting module includes a detecting plate disposed above the light emitting plate, a sensor and a second micro-control chip being electrically connected to a side of the detecting plate facing the light emitting plate, the sensor and the second micro-control chip being electrically connected.
7. The paper sheet recognition device according to claim 6, wherein the point light source is a first light emitting diode emitting infrared light, the first light emitting diode is connected with a light emitting control circuit, the light emitting control circuit comprises a triode, a first micro-control chip, a first power supply, a first resistor, a second resistor and a third resistor, a collector of the triode is connected with an anode of the first power supply through the first resistor, the collector of the triode is connected with an anode of the first light emitting diode, a cathode of the first light emitting diode is grounded, a base of the triode is connected with a first output pin of the first micro-control chip through the second resistor, a base of the triode is grounded through the third resistor, and an emitter of the triode is grounded.
8. The paper sheet recognition device of claim 6, wherein the sensor is an infrared sensor.
9. The paper sheet recognition device of claim 8, wherein the sensor comprises a power supply terminal, a ground terminal and a signal output terminal, the detection board is further provided with a signal processing circuit, the signal processing circuit comprises a second emitting diode, a second power supply, a fourth resistor and a fifth resistor, the power supply terminal is connected with the anode of the second power supply, the ground terminal is grounded, the anode of the second emitting diode is connected with the anode of the second power supply through the fourth resistor, the cathode of the second emitting diode is connected with the signal output terminal, and the signal output terminal is connected with the first input pin of the second micro-control chip through the fifth resistor.
10. A user printing machine comprising a stamp plate and a sheet discriminating device according to any one of claims 1 to 9, said sheet discriminating device being provided on an upper end surface of said stamp plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110588971.2A CN113375571A (en) | 2021-05-28 | 2021-05-28 | Paper sheet identification device and printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110588971.2A CN113375571A (en) | 2021-05-28 | 2021-05-28 | Paper sheet identification device and printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113375571A true CN113375571A (en) | 2021-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110588971.2A Pending CN113375571A (en) | 2021-05-28 | 2021-05-28 | Paper sheet identification device and printer |
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| CN (1) | CN113375571A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116295051A (en) * | 2023-03-20 | 2023-06-23 | 河北日泰新型管材有限公司 | Cross-linked polyethylene pipe wall thickness measuring method based on special frequency illumination recognition technology |
-
2021
- 2021-05-28 CN CN202110588971.2A patent/CN113375571A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116295051A (en) * | 2023-03-20 | 2023-06-23 | 河北日泰新型管材有限公司 | Cross-linked polyethylene pipe wall thickness measuring method based on special frequency illumination recognition technology |
| CN116295051B (en) * | 2023-03-20 | 2024-01-05 | 河北日泰新型管材有限公司 | Cross-linked polyethylene pipe wall thickness measuring method based on special frequency illumination recognition technology |
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