CN106067213B - A kind of device for detecting thickness of medium and method - Google Patents
A kind of device for detecting thickness of medium and method Download PDFInfo
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- CN106067213B CN106067213B CN201610356470.0A CN201610356470A CN106067213B CN 106067213 B CN106067213 B CN 106067213B CN 201610356470 A CN201610356470 A CN 201610356470A CN 106067213 B CN106067213 B CN 106067213B
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/16—Testing the dimensions
- G07D7/164—Thickness
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- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Controlling Sheets Or Webs (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention belongs to financial automatic equipment field, a kind of device for detecting thickness of medium and method are provided.The present invention is by using including driving shaft, floating axle, elastic slice, the device for detecting thickness of medium of displacement sensor and data processing module, second displacement information of the elastic slice relative to displacement sensor when detecting the medium channel between driving shaft and floating axle respectively by displacement sensor elastic slice having medium to enter relative to the first displacement information of displacement sensor and the medium channel when not having medium to enter, and first displacement information and second displacement information are handled by data processing module, obtain the actual (real) thickness information of medium, not only eliminate the influence of the mismachining tolerance of driving shaft to the testing result of dielectric thickness information, improve the detection accuracy of device for detecting thickness of medium, and reduce the requirement to the machining accuracy of driving shaft, to reduce processing cost.
Description
Technical field
The invention belongs to financial automatic equipment field more particularly to a kind of device for detecting thickness of medium and methods.
Background technique
It is existing finance automatic equipment such as ATM automatic teller machine in, generally can all be arranged paper money thickness testing apparatus for pair
The thickness of bank note is detected, as shown in Figure 1, traditional paper money thickness testing apparatus includes driving shaft 1, floating axle 2, elastic slice 3
And displacement sensor 4, driving shaft 1 and the relatively fixed setting of displacement sensor 4, floating axle 2 and elastic slice 3 are successively set on driving shaft
Between 1 and displacement sensor 4, floating axle 2 is in contact with driving shaft 1, and the contact position of floating axle 1 and driving shaft 2 is logical for bank note
Road, elastic slice 3 are fixedly connected with the axle center of floating axle 2, and the cross section of the plane and floating axle 2 where elastic slice 3 is mutually perpendicular to, bullet
There are pre-determined distances between piece 3 and displacement sensor 4, and when banknote path has bank note to enter, floating axle 2 can be held up by bank note,
The distance between elastic slice 3 and displacement sensor 4 can change at this time, and displacement sensor 4 is according to the displacement information of elastic slice 3
Obtain the thickness of bank note.
However, in practical applications, due to the presence of mismachining tolerance, not stringent equal, the meeting in this way of the radius of driving shaft 1
Cause driving shaft 1 at a distance from elastic slice 3 in unloaded rotation process is between displacement sensor 4 and unequal, causes finally to detect
To banknote thickness there are error, will lead to increased costs if improving to the machining accuracy of driving shaft 1.
Summary of the invention
The purpose of the present invention is to provide a kind of device for detecting thickness of medium and methods, it is intended to solve traditional Thickness sensitivity
The radius of driving shaft is not stringent equal and lead to the banknote thickness eventually detected there are errors in device, if improving to driving shaft
Machining accuracy the problem of then will lead to increased costs.
The invention is realized in this way a kind of device for detecting thickness of medium, is connected to the motor, including driving shaft, floating axle,
Elastic slice and displacement sensor, the driving shaft fixed setting opposite with institute's displacement sensors, the floating axle and the elastic slice
It is successively set between the driving shaft and institute's displacement sensors, the floating axle is in contact with the driving shaft, and described
The contact position of floating axle and the driving shaft is medium channel, and the elastic slice is fixedly connected with the axle center of the floating axle, and institute
The cross section for stating plane and the floating axle where elastic slice is mutually perpendicular to, between the elastic slice and institute's displacement sensors there are
Pre-determined distance, the device for detecting thickness of medium further include data processing module, and the data processing module and the displacement pass
Sensor is connected；
The driving shaft at the uniform velocity rotates under the driving of the motor, and it is logical that institute's displacement sensors detect the medium respectively
There is the elastic slice relative to the first displacement information of institute's displacement sensors and the medium channel when road does not have medium to enter
Second displacement information of the elastic slice relative to institute's displacement sensors when medium enters, and by first displacement information and institute
It states second displacement information and is transmitted to the data processing module；The data processing module is to first displacement information and second
Displacement information is handled, and the thickness information of the medium is obtained.
The embodiment of the invention also provides a kind of dielectric thickness detection method, the dielectric thickness detection method includes:
The driving shaft at the uniform velocity rotates under the driving of the motor；
Institute's displacement sensors detect the medium channel when not having medium the to enter respectively elastic slice is relative to institute's rheme
The first displacement information and the medium channel of displacement sensor when thering is medium to enter the elastic slice relative to the displacement sensing
The second displacement information of device, and first displacement information and the second displacement information are transmitted to the data processing mould
Block；
The data processing module handles first displacement information and second displacement information, obtains the medium
Thickness information.
The present invention is by using the medium thickness for including driving shaft, floating axle, elastic slice, displacement sensor and data processing module
Spend detection device, bullet when not having medium to enter that detects the medium channel between driving shaft and floating axle respectively by displacement sensor
Elastic slice is passed relative to displacement when piece has medium to enter relative to the first displacement information of displacement sensor and the medium channel
The second displacement information of sensor, and by data processing module to first displacement information and second displacement information at
Reason, obtains the actual (real) thickness information of medium, not only eliminates testing result of the mismachining tolerance to dielectric thickness information of driving shaft
Influence, improve the detection accuracy of device for detecting thickness of medium, and reduce the requirement to the machining accuracy of driving shaft, from
And reduce processing cost.
Detailed description of the invention
The structural schematic diagram of the cross section for the note detection device that Fig. 1 prior art provides；
Fig. 2 is the structural schematic diagram of the cross section for the device for detecting thickness of medium that first embodiment of the invention provides；
Fig. 3 is the flow chart for the dielectric thickness detection method that second embodiment of the invention provides；
Fig. 4 (a) is the waveform diagram of the first displacement information provided in an embodiment of the present invention, and Fig. 4 (b) is implementation of the present invention
The waveform diagram for the actual dielectric thickness information that example provides, Fig. 4 (c) is second displacement information provided in an embodiment of the present invention
Waveform diagram.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Embodiment one:
The first embodiment of the present invention provides a kind of device for detecting thickness of medium.The device for detecting thickness of medium can answer
For the currency checking module of the financial automatic equipment such as automatic teller machine, for detecting the thickness of bank note.
Fig. 2 shows the structures of the cross section of the device for detecting thickness of medium of first embodiment of the invention offer, in order to just
In explanation, only parts related to embodiments of the present invention are shown.
A kind of device for detecting thickness of medium is connected to the motor (not shown), including driving shaft 1, floating axle 2, elastic slice 3
And displacement sensor 4, driving shaft 1 and the relatively fixed setting of displacement sensor 4, floating axle 2 and elastic slice 3 are successively set on driving shaft
Between 1 and displacement sensor 4, floating axle 2 is in contact with driving shaft 1, and the contact position of floating axle 2 and driving shaft 1 is logical for medium
Road, elastic slice 3 are fixedly connected with the axle center of floating axle 2, and the cross section of the plane and floating axle 2 where elastic slice 3 is mutually perpendicular to, bullet
There are pre-determined distance between piece 3 and displacement sensor 4, device for detecting thickness of medium further includes data processing module 5, data processing
Module 5 is connected with displacement sensor 4.
Driving shaft 1 at the uniform velocity rotates under the drive of the motor, and displacement sensor 4 detects medium channel respectively does not have medium entrance
When elastic slice 3 when thering is medium to enter relative to the first displacement information and medium channel of displacement sensor 4 elastic slice 3 relative to displacement
The second displacement information of sensor 4, and the first displacement information and second displacement information are transmitted to data processing module 5；Data
Processing module 5 handles the first displacement information and second displacement information, obtains the thickness information of medium.
In the present embodiment, driving shaft 1 and floating axle 2 are columned roller bearing, and the axle center of driving shaft 1 is fixed
's；The axle center of floating axle 2 is fixedly connected with elastic slice 3, and the cross section of the plane and floating axle 2 where elastic slice 3 is mutually perpendicular to, and is floated
Moving axis 2 and elastic slice 3 as a whole, can float up and down.
When medium channel does not have medium entrance, i.e., when driving shaft 1 is unloaded, due to the presence of mismachining tolerance, displacement sensor 4
The first displacement information detected is not fixed and invariable, but in periodically variable, the waveform tool of the first displacement information
Shown in body such as Fig. 4 (a)；In the ideal case, i.e., when not considering the mismachining tolerance of driving shaft 1, detected by displacement sensor 4
Actual dielectric thickness information is one stringent ladder-like, as shown in Fig. 4 (b)；Therefore, mismachining tolerance there are the case where
Under, second displacement information detected by displacement sensor 4 is that actual medium has been superimposed on the basis of the first displacement information
What thickness information was formed, the waveform of second displacement information is specifically as shown in Fig. 4 (c).Data processing module 5 is to the first displacement information
Actual dielectric thickness information is exported after being handled with second displacement information, which accurately reflects
The thickness of detected medium.For traditional thickness detection apparatus, thickness detection apparatus provided in this embodiment exists
Under the premise of ensure that detection accuracy, the requirement of the machining accuracy to driving shaft 1 is reduced, processing cost is reduced.
As one embodiment of the invention, data processing mould 5 includes computing unit, computing unit by second displacement information with
First displacement information is subtracted each other to obtain third displacement information, and the thickness information that third displacement information is converted to medium is carried out
Output.
In the present embodiment, third displacement information is actual dielectric thickness information.The waveform letter of third displacement information
Number can be calculated by the following formula to obtain:
Z (x)=g (x)-f (x)；
Wherein, z (x) is the wave function of third displacement information, and f (x) is the wave function of the first displacement information, and g (x) is
The wave function of second displacement information.
More specifically, the wave function of third displacement information can be calculated by the following formula to obtain:
Z (x)=g (x)-f (x0+2·pi·n+m)；
Wherein, z (x) is the wave function of third displacement information, and f (x) is the wave function of the first displacement information, and g (x) is
The wave function of second displacement information, x0Start initial position when rotation for driving shaft 1, pi is pi, and n and m expression are worked as
When medium channel has medium to enter, driving shaft 1 has rotated n+m circle (wherein n is integer, and m is decimal radian).
Embodiment two:
Second embodiment of the invention provides a kind of device for detecting thickness of medium provided by one based on the above embodiment
Dielectric thickness detection method.
Fig. 3 shows the flow chart of the dielectric thickness detection method of second embodiment of the invention offer, for ease of description,
Only parts related to embodiments of the present invention are shown.
As shown in figure 3, a kind of dielectric thickness detection method, comprising:
In step s101, driving shaft at the uniform velocity rotates under the drive of the motor.
In step s 102, displacement sensor detects medium channel when not having medium to enter respectively elastic slice is passed relative to displacement
Second displacement information of the elastic slice relative to displacement sensor when the first displacement information and medium channel of sensor have medium to enter,
And the first displacement information and second displacement information are transmitted to data processing module.
In step s 103, data processing module handles the first displacement information and second displacement information, is situated between
The thickness information of matter.
In the present embodiment, when medium channel does not have medium entrance, i.e. driving shaft zero load, due to depositing for mismachining tolerance
, the first displacement information that displacement sensor detects is not fixed and invariable, but in periodically variable, the first displacement
The waveform of information is specifically as shown in Fig. 4 (a)；In the ideal case, i.e., when not considering the mismachining tolerance of driving shaft, displacement sensor
Detected actual dielectric thickness information is one stringent ladder-like, as shown in Fig. 4 (b)；Therefore, it is deposited in mismachining tolerance
In case, second displacement information detected by displacement sensor is to be superimposed reality on the basis of the first displacement information
Dielectric thickness information formed, the waveform of second displacement information is specifically as shown in Fig. 4 (c).Data processing module is to first
Shifting information and second displacement information export actual dielectric thickness information after being handled, and the actual dielectric thickness information is accurate
The thickness for reflecting detected medium.For traditional thickness detection apparatus, Thickness sensitivity provided in this embodiment
Device reduces the requirement to the machining accuracy of driving shaft, reduces processing cost under the premise of ensure that detection accuracy.
As one embodiment of the invention, step S103 is specifically included:
Data processing module is subtracted each other second displacement information and the first displacement information to obtain third displacement information, and will
The thickness information that third displacement information is converted to medium is exported.
In the present embodiment, third displacement information is actual dielectric thickness information.The waveform letter of third displacement information
Number can be calculated by the following formula to obtain:
Z (x)=g (x)-f (x)；
Wherein, z (x) is the wave function of third displacement information, and f (x) is the wave function of the first displacement information, and g (x) is
The wave function of second displacement information.
More specifically, third displacement information, which is calculated by the following formula, obtains:
Z (x)=g (x)-f (x0+2·pi·n+m)；
Wherein, z (x) is the wave function of third displacement information, and f (x) is the wave function of the first displacement information, and g (x) is
The wave function of second displacement information, x0Start initial position when rotation for driving shaft, pi is pi, and n+m is indicated as Jie
When matter channel has medium to enter, the circle number of spindle rotation, wherein n is integer, and m is decimal radian.
The present invention is by using the medium thickness for including driving shaft, floating axle, elastic slice, displacement sensor and data processing module
Spend detection device, bullet when not having medium to enter that detects the medium channel between driving shaft and floating axle respectively by displacement sensor
Elastic slice is passed relative to displacement when piece has medium to enter relative to the first displacement information of displacement sensor and the medium channel
The second displacement information of sensor, and by data processing module to first displacement information and second displacement information at
Reason, obtains the actual (real) thickness information of medium, not only eliminates testing result of the mismachining tolerance to dielectric thickness information of driving shaft
Influence, improve the detection accuracy of device for detecting thickness of medium, and reduce the requirement to the machining accuracy of driving shaft, from
And reduce processing cost.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (2)
1. a kind of device for detecting thickness of medium, is connected to the motor, including driving shaft, floating axle, elastic slice and displacement sensor, described
Driving shaft fixed setting opposite with institute's displacement sensors, the floating axle and the elastic slice be successively set on the driving shaft and
Between institute's displacement sensors, the floating axle is in contact with the driving shaft, and the floating axle and the driving shaft connect
Synapsis is medium channel, and the elastic slice is fixedly connected with the axle center of the floating axle, and the plane where the elastic slice with it is described
The cross section of floating axle is mutually perpendicular to, and there are pre-determined distances between the elastic slice and institute's displacement sensors, which is characterized in that institute
Stating device for detecting thickness of medium further includes data processing module, and the data processing module is connected with institute's displacement sensors；
The driving shaft at the uniform velocity rotates under the driving of the motor, and institute's displacement sensors detect the medium channel respectively not to be had
The elastic slice has medium relative to the first displacement information of institute's displacement sensors and the medium channel when having medium to enter
Into when second displacement information relative to institute's displacement sensors of the elastic slice, and by first displacement information and described
Two displacement informations are transmitted to the data processing module；The data processing module is to first displacement information and second displacement
Information is handled, and the thickness information of the medium is obtained；Wherein, first displacement information is in cyclically-varying；
The data processing mould includes computing unit, and the computing unit believes the second displacement information and first displacement
Breath is subtracted each other to obtain third displacement information, and the thickness information progress that the third displacement information is converted to the medium is defeated
Out；
The third displacement information, which is calculated by the following formula, to be obtained:
Z (x)=g (x)-f (x0+2·pi·n+m)；
Wherein, z (x) is the wave function of the third displacement information, and f (x) is the wave function of first displacement information, g
It (x) is the wave function of the second displacement information, x0Start initial position when rotation for the driving shaft, pi is circumference
Rate, n+m indicate the circle number of the spindle rotation when the medium channel has medium to enter, wherein n is integer, and m is decimal
Radian.
2. a kind of dielectric thickness detection method based on device for detecting thickness of medium described in claim 1, which is characterized in that institute
Giving an account of matter thickness detecting method includes:
The driving shaft at the uniform velocity rotates under the driving of the motor；
Institute's displacement sensors detect the medium channel when not having medium to enter respectively, and the elastic slice is passed relative to the displacement
The first displacement information and the medium channel of sensor when thering is medium to enter the elastic slice relative to institute's displacement sensors
Second displacement information, and first displacement information and the second displacement information are transmitted to the data processing module；
The data processing module handles first displacement information and second displacement information, obtains the thickness of the medium
Spend information；Wherein, first displacement information is in cyclically-varying；
The data processing module handles first displacement information and second displacement information, obtains the thickness of the medium
The step of spending information specifically includes:
The data processing module is subtracted each other the second displacement information and first displacement information to obtain third displacement
Information, and the thickness information that the third displacement information is converted to the medium is exported；
The third displacement information, which is calculated by the following formula, to be obtained:
Z (x)=g (x)-f (x0+2·pi·n+m)；
Wherein, z (x) is the wave function of the third displacement information, and f (x) is the wave function of first displacement information, g
It (x) is the wave function of the second displacement information, x0Start initial position when rotation for the driving shaft, pi is circumference
Rate, n+m indicate the circle number of the spindle rotation when the medium channel has medium to enter, wherein n is integer, and m is decimal
Radian.
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| CN106875541A (en) * | 2017-03-17 | 2017-06-20 | 深圳怡化电脑股份有限公司 | A kind of method, the apparatus and system of banknote thickness detection |
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| JP2011053089A (en) * | 2009-09-02 | 2011-03-17 | Oki Electric Industry Co Ltd | Thickness measuring device and thickness measuring method |
| CN102865806A (en) * | 2010-04-16 | 2013-01-09 | 上海古鳌电子科技股份有限公司 | Composite measuring method of paper currency measuring device for measuring micro displacement change |
| CN101996433B (en) * | 2010-09-21 | 2012-10-03 | 广州广电运通金融电子股份有限公司 | Thickness identification device of slice-type medium and identification method thereof |
| CN102722933B (en) * | 2012-06-11 | 2014-08-20 | 广州广电运通金融电子股份有限公司 | Device for detecting thickness of sheet medium and method thereof |
| CN103106729B (en) * | 2012-12-24 | 2015-05-13 | 广州广电运通金融电子股份有限公司 | Sheet type medium thickness identifying device and identifying method thereof |
| CN204508299U (en) * | 2015-03-17 | 2015-07-29 | 山东新北洋信息技术股份有限公司 | Flaky medium thickness detection mechanism and laminated medium processing unit |
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