CN205080645U - Utilize photosensitive sensor to detect paper sheet thickness's device - Google Patents
Utilize photosensitive sensor to detect paper sheet thickness's device Download PDFInfo
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- CN205080645U CN205080645U CN201520795242.4U CN201520795242U CN205080645U CN 205080645 U CN205080645 U CN 205080645U CN 201520795242 U CN201520795242 U CN 201520795242U CN 205080645 U CN205080645 U CN 205080645U
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- lever
- light
- reflection surface
- diffuse reflection
- light sensor
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- Inspection Of Paper Currency And Valuable Securities (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model discloses an utilize photosensitive sensor to detect paper sheet thickness's device, including a radial fixed roll and radial action roller, one side that radial fixed roll was kept away from to radial action roller is equipped with the lever, lever and radial action roller fixed connection, and the one end and the fulcrum fixed connection of lever, the other end of lever is equipped with the diffuse reflection surface, and the below on diffuse reflection surface is equipped with light source and photosensitive sensor, and light source and photosensitive sensor equal apart from the distance of lever that the light -emitting direction and the photosensitive sensor of light source receive the light direction all towards the diffuse reflection surface. The utilize photosensitive sensor to detect paper sheet thickness's device and method for passes through the thickness that photosensitive sensor experiences the measure of the change paper of light intensity, and the accuracy is higher, also can effectively monitor to the paper currency that uses tape -stripping or concatenation.
Description
Technical field
The utility model relates to a kind of pick-up unit, refers in particular to a kind of device utilizing light sensor to detect paper sheet thickness.
Background technology
In the device of the money transaction such as ATM (automatic teller machine) or currency counting and detecting machine, need the bank note treatment device possessed, current bank note treatment device, the arbitration functions for banknote thickness is more weak, can not determine whether the bank note using tape-stripping or splicing preferably.China Patent Publication No. CN103971445A, publication date on August 6th, 2014, discloses a kind of pick-up unit of banknote thickness, comprising: electret electrode group, comprise multiple electret electrode in the patent of invention that name is called " pick-up unit of banknote thickness "; Detect electrode group, comprise at least one and detect electrode, detect electrode group and electret electrode group is arranged at interval in a first direction, detect the first mobile space forming bank note to be detected between electrode group and electret electrode group; Detection device, comprises detecting circuit, and detecting circuit is respectively with electret electrode with detect electrode and be electrically connected and thickness voltage change being transformed into bank note to be detected.Weak point is, this device detects the thickness of bank note by voltage change, and error is comparatively large, can not determine whether the bank note using tape-stripping or splicing.
Utility model content
The purpose of this utility model is that to overcome the judgement of bank note treatment device to banknote thickness in prior art more weak, the shortcoming of the bank note using tape-stripping or splicing can not be determined whether preferably, a kind of device utilizing light sensor to detect paper sheet thickness is provided.
The purpose of this utility model is achieved by following technical proposals:
A kind of device utilizing light sensor to detect paper sheet thickness, comprise a radial fixed idler whell and radial action roller, radial action roller is provided with lever away from the side of radial fixed idler whell, lever is fixedly connected with radial action roller, one end of lever is fixedly connected with fulcrum, the other end of lever is provided with diffuse reflection surface, the below of diffuse reflection surface is provided with light source and light sensor, the distance of light source and light sensor distance lever is equal, and the light direction of light source and light sensor receive light direction all towards diffuse reflection surface.
When paper is between radial action roller and radial fixed idler whell, the distance of diffuse reflection surface and described light source and light sensor will change, thus the intensity of reflected light making light sensor receive from diffuse reflection surface changes, this variable quantity reflects the thickness of paper in real time.Because the thickness error directly measuring paper is larger, and measure paper sheet thickness by the method, degree of accuracy is higher, and error is less, change for the banknote thickness using tape-stripping or splicing has higher sensitivity, reaches the effect detecting banknote thickness preferably.
As a kind of preferred version, fulcrum to the distance of diffuse reflection surface be described fulcrum to the distance of radial action roller 3-5 doubly.This design is when paper is between radial action roller and radial fixed idler whell, and the displacement of diffuse reflection surface is about the 3-5 of paper sheet thickness doubly, adds the accuracy of detection, further reduces error.
As a kind of preferred version, the outer of light sensor is provided with light shield.Light shield is used for blocking extraneous light, avoids surround lighting on the impact of light sensor.
As a kind of preferred version, the sectional view of diffuse reflection surface is sin functional digraph.Sectional view is that the design of sin functional digraph makes diffuse reflection more reasonable, makes the accuracy of light sensor higher.
As a kind of preferred version, described sin function is specially y=sin(n) span of x, n is 0.6-0.8.Through a large number of experiments show that, the span of n is that the paper sheet thickness that records of the function light sensor of 0.6-0.8 and actual value error are minimum.
Utilize light sensor to detect a method for paper sheet thickness, comprise the following steps:
Step 1, when paper does not enter pick-up unit, diffuse reflection surface is positioned at original position, now, diffuse reflection surface is in the first level line place of the light intensity that light source sends, and its light intensity is k, and light sensor is positioned at the second level line place of the light intensity of diffuse reflection surface reflection, its light intensity is designated as kf, and wherein f is fixed constant, and now the reading v of light sensor is:
v=k*kf；
Step 2, paper enters pick-up unit when namely entering between radial fixed idler whell and radial action roller, radial action roller is raised, and then lever is raised, because the fulcrum of lever one end is fixed, then the diffuse reflection surface of the lever other end is then significantly raised, now, diffuse reflection surface is in the 3rd of the light intensity that light source sends and ascends a height line place, its light intensity is mk, and light sensor is positioned at the 4th level line place of the light intensity of diffuse reflection surface reflection, its light intensity is designated as mkf, and now the reading v1 of light sensor is:
v1=mk*mkf；
Step 3, subtracts each other v and v1, and the difference dv drawn is:
dv=v-v1=（1-m*m）*k*kf；
Difference dv represents the thickness of paper.
The beneficial effects of the utility model are, the apparatus and method utilizing light sensor to detect paper sheet thickness experience the thickness of the measure of the change paper of light intensity by light sensor, accuracy is higher, also can effectively monitor for using the bank note of tape-stripping or splicing.And the utility model structure simple, practical, be easy to realize.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is the light intensity level line schematic diagram of light source of the present utility model;
Fig. 3 is the level line schematic diagram of light sensor receiving light power of the present utility model;
Fig. 4 is the sectional view of diffuse reflection surface of the present utility model.
Wherein: 1, radial fixed idler whell, 2, radial action roller, 3, lever, 4, fulcrum, 5, diffuse reflection surface, 6, light source, 7, light sensor, 8, paper, the 9, first level line, the 10, the 3rd level line, 11, the 5th level line, 12, the second level line, the 13, the 4th level line, the 14, the 6th level line.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
Embodiment: a kind of device utilizing light sensor to detect paper sheet thickness, its structural representation as shown in Figure 1, comprise a radial fixed idler whell 1 and radial action roller 2, radial action roller is provided with lever 3 away from the side of radial fixed idler whell, lever is fixedly connected with radial action roller, one end of lever is fixedly connected with fulcrum 4, the other end of lever is provided with diffuse reflection surface 5, the below of diffuse reflection surface is provided with light source 6 and light sensor 7, the distance of light source and light sensor distance lever is equal, the light direction of light source and light sensor receive light direction all towards diffuse reflection surface.Fulcrum is described fulcrum to 3 times of distance of radial action roller to the distance of diffuse reflection surface.The outer of light sensor is provided with light shield.As shown in Figure 4, the sectional view of diffuse reflection surface is sin functional digraph to the sectional view of diffuse reflection surface, and sin function is specially y=sin(0.8) x.
As shown in Figure 2, it comprises the first level line 9, the 3rd level line 10 and the 5th level line 11 to the light intensity level line schematic diagram of light source.As shown in Figure 3, it comprises the second level line 12, the 4th level line 13 and the 6th level line 14 to the level line schematic diagram of light sensor receiving light power, and wherein the sense of rotation of the light intensity field of receiving light power is as illustrated shown in 15.
When paper is between radial action roller and radial fixed idler whell, the distance of diffuse reflection surface and described light source and light sensor will change, thus the intensity of reflected light making light sensor receive from diffuse reflection surface changes, this variable quantity reflects the thickness of paper in real time.Because the thickness error directly measuring paper is larger, and measure paper sheet thickness by the method, degree of accuracy is higher, and error is less, change for the banknote thickness using tape-stripping or splicing has higher sensitivity, reaches the effect detecting banknote thickness preferably.
Utilize light sensor to detect a method for paper sheet thickness, comprise the following steps:
Step 1, when paper 8 does not enter pick-up unit, diffuse reflection surface is positioned at original position, now, diffuse reflection surface is in the first level line place of the light intensity that light source sends, and its light intensity is k, and light sensor is positioned at the second level line place of the light intensity of diffuse reflection surface reflection, its light intensity is designated as kf, and wherein f is fixed constant, and now the reading v of light sensor is:
v=k*kf；
Step 2, paper enters pick-up unit when namely entering between radial fixed idler whell and radial action roller, radial action roller is raised, and then lever is raised, because the fulcrum of lever one end is fixed, then the diffuse reflection surface of the lever other end is then significantly raised, now, diffuse reflection surface is in the 3rd of the light intensity that light source sends and ascends a height line place, its light intensity is 0.9k, and light sensor is positioned at the 4th level line place of the light intensity of diffuse reflection surface reflection, its light intensity is designated as 0.9kf, and now the reading v1 of light sensor is:
v1=0.9k*0.9kf；
Step 3, subtracts each other v and v1, and the difference dv drawn is:
dv=v-v1=（1-0.9*0.9）*k*kf=0.19*k*kf；
Difference dv represents the thickness of paper.
Finally, it is also to be noted that what enumerate above is only specific embodiment of the utility model.Obviously, the utility model is not limited to above embodiment, can also have many distortion.All distortion that those of ordinary skill in the art can directly derive from content disclosed in the utility model or associate, all should think protection domain of the present utility model.
Claims (5)
1. the device utilizing light sensor to detect paper sheet thickness, it is characterized in that, comprise a radial fixed idler whell and radial action roller, radial action roller is provided with lever away from the side of radial fixed idler whell, lever is fixedly connected with radial action roller, one end of lever is fixedly connected with fulcrum, the other end of lever is provided with diffuse reflection surface, the below of diffuse reflection surface is provided with light source and light sensor, the distance of light source and light sensor distance lever is equal, and the light direction of light source and light sensor receive light direction all towards diffuse reflection surface.
2. a kind of light sensor that utilizes according to claim 1 detects the device of paper sheet thickness, it is characterized in that, described fulcrum is described fulcrum to 3-5 times of the distance of radial action roller to the distance of diffuse reflection surface.
3. a kind of device utilizing light sensor to detect paper sheet thickness according to claim 1, it is characterized in that, the outer of described light sensor is provided with light shield.
4. a kind of device utilizing light sensor to detect paper sheet thickness according to claim 1 or 2 or 3, it is characterized in that, the sectional view of described diffuse reflection surface is sin functional digraph.
5. a kind of light sensor that utilizes according to claim 4 detects the device of paper sheet thickness, and it is characterized in that, described sin function is specially y=sin(n) span of x, n is 0.6-0.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520795242.4U CN205080645U (en) | 2015-10-15 | 2015-10-15 | Utilize photosensitive sensor to detect paper sheet thickness's device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520795242.4U CN205080645U (en) | 2015-10-15 | 2015-10-15 | Utilize photosensitive sensor to detect paper sheet thickness's device |
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| Publication Number | Publication Date |
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| CN205080645U true CN205080645U (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520795242.4U Expired - Fee Related CN205080645U (en) | 2015-10-15 | 2015-10-15 | Utilize photosensitive sensor to detect paper sheet thickness's device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105303675A (en) * | 2015-10-15 | 2016-02-03 | 东方通信股份有限公司 | Device and method for detecting thickness of paper by using photosensitive sensor |
| CN107680243A (en) * | 2017-09-04 | 2018-02-09 | 东方通信股份有限公司 | Note thickness measurement device and measuring method based on infrared sensor transmission |
-
2015
- 2015-10-15 CN CN201520795242.4U patent/CN205080645U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105303675A (en) * | 2015-10-15 | 2016-02-03 | 东方通信股份有限公司 | Device and method for detecting thickness of paper by using photosensitive sensor |
| CN107680243A (en) * | 2017-09-04 | 2018-02-09 | 东方通信股份有限公司 | Note thickness measurement device and measuring method based on infrared sensor transmission |
| CN107680243B (en) * | 2017-09-04 | 2019-11-05 | 东方通信股份有限公司 | Note thickness measurement device and measurement method based on infrared sensor transmission |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160309 Termination date: 20201015 |