CN205428008U - Note thickness measuring device - Google Patents
Note thickness measuring device Download PDFInfo
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- CN205428008U CN205428008U CN201620182548.7U CN201620182548U CN205428008U CN 205428008 U CN205428008 U CN 205428008U CN 201620182548 U CN201620182548 U CN 201620182548U CN 205428008 U CN205428008 U CN 205428008U
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- thickness measuring
- eddy current
- measuring wheel
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- sheet metal
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Abstract
The utility model relates to a note thickness measuring device. It includes pedestal, circuit board and two at least thickness measuring mechanisms, thickness measuring mechanism includes action wheel, passive thickness measuring wheel, thickness measuring wheel support and sheetmetal, pedestal upper portion is located to the circuit board, the sheetmetal that the circuit board corresponds every thickness measuring mechanism is equipped with the eddy current coil, and the second of sheetmetal holds the butt on the expansion end of thickness measuring wheel support and below lieing in the eddy current coil, the action wheel is located one side of passive thickness measuring wheel and is taken turns tendency drive with passive thickness measuring. The utility model discloses note thickness measuring device utilizes the eddy current coil as detecting the original paper, and the sheetmetal that causes through detecting the displacement that passive thickness measuring wheel expansion end produced changes with the clearance of eddy current coil, and the impedance and the induction reactance that make the eddy current coil change and determines the thickness of paper currency, thereby have improved the utility model discloses note thickness measuring device's thickness measuring precision and interference killing feature to and the thickness measurement's of paper currency stability and accuracy.
Description
Technical field
This utility model relates to the false proof measuring thickness device of the bank note financial instrument such as cleaning-sorting machine, paper money counter, concretely relates to a kind of banknote thickness gauge.
Background technology
Along with the development of scientific and technological progress, paper currency sorter is as bank and financial company requisite bank note sorting equipment, and range is more and more extensive.In recent years paper currency sorting is required to improve constantly by bank, and internal people's coin adulterium counterfeit money occurs again and again, and the detection of note surface adhesive tape is had become as cleaning-sorting machine necessary functions.Banknote thickness gauge, as cleaning-sorting machine critical structural component, owing to its technology domestic is the most ripe, seriously constrains the development of cleaning-sorting machine.
Current domestic conventional thickness measuring mode is infrared thickness measuring, ultrasonic thickness measurement and Hall thickness measuring.Infrared thickness measuring is easily affected by note surface spot, undesirable to no-reflection bank note bur Detection results, causes the erroneous judgement to banknote thickness.Ultrasonic thickness measurement is the highest to structural requirement, it is necessary to assure banknote smoothly passes, and for the bank note of high-speed cruising, batch production is it is difficult to ensure that bank note steady.The principle of Hall thickness measuring is the thickness that induced field variable quantity judges bank note, and owing to bearing and elastic wheel are all metal structures, easy band magnetic produces interference to Hall element.
Utility model content
The purpose of this utility model is to overcome existing banknote thickness gauge by metal magnetic interference, the problems such as structural requirement is complicated, and provide one to utilize eddy current coil as detection original paper, the sheet metal caused by detecting the displacement of passive thickness measuring wheel movable end generation changes with the gap of eddy current coil, the impedance and the induction reactance that make eddy current coil change and judge the thickness of bank note, thus improve the banknote thickness gauge of thickness measuring precision and capacity of resisting disturbance.
The purpose of this utility model is achieved in that
A kind of banknote thickness gauge, including pedestal, circuit board, and at least two mechanism for measuring thick, described mechanism for measuring thick includes drivewheel, passive thickness measuring wheel, thickness measuring wheel support and sheet metal, pedestal top is located at by described circuit board, the turning end of described thickness measuring wheel support is articulated on pedestal, described passive thickness measuring wheel rotates the movable end being arranged at thickness measuring wheel support, the sheet metal of the corresponding each mechanism for measuring thick of described circuit board is provided with eddy current coil, first end of described sheet metal is located on pedestal, second end of sheet metal is connected on the movable end of thickness measuring wheel support and is positioned at below eddy current coil, described drivewheel is located at the side of passive thickness measuring wheel and takes turns frictional drive with passive thickness measuring, gap between described drivewheel and passive thickness measuring wheel was paper money gap.
This utility model can also do and improve further below.
The position of the axle center of described drivewheel, pedestal, sheet metal and circuit board is fixing.
The position of the axle center of described passive thickness measuring wheel and the movable end of thickness measuring wheel support is variable, and when the gap between passive thickness measuring wheel and drivewheel of bank note, the axle center of passive thickness measuring wheel, the movable end of thickness measuring wheel then move up and down with the insertion of bank note.The sheet metal of mobile initiation of the movable end of thickness measuring wheel support changes with the gap of eddy current coil, the impedance and the induction reactance that make eddy current coil change and judge the thickness of bank note, thus improve this utility model banknote thickness gauge thickness measuring precision and capacity of resisting disturbance.
The movable end correspondence sheet metal of described thickness measuring wheel support is provided with projection, the top of pedestal is provided with cavity, and cavity respective protrusions is provided with through hole, described in project through through hole and stretch into cavity, described sheet metal is between eddy current coil and projection, and described cavity, sheet metal, eddy current coil constitute resonator cavity.
Described projection is positioned at the side of the movable end of thickness measuring wheel support, and described passive thickness measuring wheel rotates the opposite side of the movable end being arranged at thickness measuring wheel support.
The shape of the second end of described sheet metal and the mating shapes of eddy current coil, the diameter of the second end of described sheet metal is more than or equal to the diameter of eddy current coil, in order to eddy current coil induction metal plate changes with the gap of eddy current coil.
Described banknote thickness gauge includes that 12 mechanism for measuring thick, 12 mechanism for measuring thick are disposed side by side on pedestal, and the bottom of described circuit board is correspondingly provided with 12 eddy current coils, it is thus possible to ten two of a piece of paper coin are carried out thickness measuring, test point is many, and accuracy of detection is the highest, the most false proof.
Described sheet metal is made up of the rustless steel that 0.3mm is thick.
Described circuit board is made up of four layers of printed board overlap, every layer of printed board is provided with the eddy current coil of a n circle, the upper-lower position of the eddy current coil in four layers of printed board is corresponding, eddy current coil in four layers of printed board is sequentially connected in series the inductance described in composition, and so composition eddy current coil just has enough inductance values.
The corresponding each vorticity line of described circuit board is provided with inductive impedance transducer LDC1000.Described passive thickness measuring wheel and drivewheel are provided with de-sludging scraping blade, are conducive to before thickness measuring, strike off the dirt on bank note, it is to avoid error occur.
Described mechanism for measuring thick includes two passive thickness measuring wheels, and two passive thickness measurings take turns the both sides that the first from left right side is arranged on the movable end of thickness measuring wheel support.Described passive thickness measuring wheel is bearing.
The beneficial effects of the utility model are as follows:
(1) this utility model banknote thickness gauge is to utilize eddy current coil as detection original paper, the sheet metal caused by detecting the displacement of passive thickness measuring wheel movable end generation changes with the gap of eddy current coil, the impedance and the induction reactance that make eddy current coil change and judge the thickness of bank note, thus improve thickness measuring precision and the capacity of resisting disturbance of this utility model banknote thickness gauge, and the stability of the thickness measure of bank note and accuracy.
(2) this utility model is the thickness being recorded bank note by eddy current effect principle, is not responding to the magnetic field of environment, and extraneous magnetic disturbance does not interferes with thickness and normally measures.
(3) accuracy of detection of the present utility model is high: can reach 25um.
(4) this utility model circuit design is simple, and convenient signal treatment, single-chip microcomputer can read data from inductive impedance transducer LDC1000, require no AD conversion.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the attachment structure schematic diagram of passive thickness measuring of the present utility model wheel and thickness measuring wheel support.
Fig. 3 is the decomposition texture schematic diagram of Fig. 2.
Fig. 4 is the sectional structure schematic diagram (this utility model banknote thickness gauge is in running order) of Fig. 1.
Fig. 5 this utility model banknote thickness gauge is in the sectional structure schematic diagram of off working state.
Fig. 6 is the attachment structure schematic diagram of pedestal of the present utility model, sheet metal and circuit board.
Fig. 7 is the decomposition texture schematic diagram of Fig. 6.
Straight arrows in Fig. 1 and Fig. 4 represents the approach axis of bank note.
Detailed description of the invention
Below in conjunction with the accompanying drawings and this utility model is further described by embodiment.
nullSee shown in Fig. 1 to Fig. 7，A kind of banknote thickness gauge，Including pedestal 2、Circuit board 1、And at least two mechanism for measuring thick 9，Described mechanism for measuring thick 9 includes drivewheel 3、Passive thickness measuring wheel 4、Thickness measuring wheel support 7 and sheet metal 8，Pedestal 2 top is located at by described circuit board 1，The turning end 74 of described thickness measuring wheel support 7 is articulated on pedestal 2，Described passive thickness measuring wheel 4 rotation is arranged at the movable end 73 of thickness measuring wheel support 7，The sheet metal 8 of the corresponding each mechanism for measuring thick 9 of described circuit board 1 is provided with eddy current coil 12，Described sheet metal 8 is located on pedestal 2 and between eddy current coil 12 and thickness measuring wheel support 7，First end 81 of described sheet metal 8 is located on pedestal 2，Second end 82 of sheet metal 8 is connected on the movable end 73 of thickness measuring wheel support 7 and is positioned at below eddy current coil 12，Described drivewheel 3 is located at the side of passive thickness measuring wheel 4 and takes turns 4 frictional drive with passive thickness measuring，Gap between described drivewheel 3 and passive thickness measuring wheel 4 was paper money gap.
As this utility model more specifically technical scheme.
The position of the axle center of described drivewheel 3, pedestal 2, sheet metal 8 and circuit board 1 is fixing.
The position of the axle center of described passive thickness measuring wheel 4 and the movable end 73 of thickness measuring wheel support 7 is variable.
The corresponding sheet metal 8 of the movable end 73 of described thickness measuring wheel support 7 is provided with protruding 71, the top of pedestal 2 is provided with cavity 72, cavity 72 respective protrusions 71 is provided with through hole 21, described protruding 71 stretch into cavity 72 by through hole 21, described sheet metal 8 is between eddy current coil 12 and protruding 71, and described cavity 72, sheet metal 8, eddy current coil 12 constitute resonator cavity.
The side of described protruding 71 movable ends 73 being positioned at thickness measuring wheel support 7, described passive thickness measuring wheel 4 rotation is arranged at the opposite side of the movable end 73 of thickness measuring wheel support 7.
The shape of the second end 82 of described sheet metal 8 and the mating shapes of eddy current coil 12, the diameter of the second end 82 of described sheet metal 8 is more than or equal to the diameter of eddy current coil 12.
Described banknote thickness gauge includes that 9,12 mechanism for measuring thick 9 of 12 mechanism for measuring thick are disposed side by side on pedestal 2, and the bottom of described circuit board 1 is correspondingly provided with 12 eddy current coils 12.
Described sheet metal 8 is made up of the rustless steel that 0.3mm is thick.
Described circuit board 1 is made up of four layers of printed board overlap, and the upper-lower position of the eddy current coil in four layers of printed board is corresponding, and the eddy current coil in four layers of printed board is sequentially connected in series composition inductance, the so eddy current coil 12 of composition just enough inductance values.
Described passive thickness measuring wheel 4 and drivewheel 3 are provided with de-sludging scraping blade 5, are conducive to before this utility model thickness measuring, strike off the dirt on bank note 6, it is to avoid error occur.
Described mechanism for measuring thick 9 includes that two passive thickness measuring wheels 4, two passive thickness measurings take turns the both sides that 4 one the first from left right sides are arranged on the movable end 73 of thickness measuring wheel support 7.Described passive thickness measuring wheel 4 is bearing.
On described circuit board, corresponding each eddy current coil is provided with inductive impedance transducer LDC1000, inductive impedance transducer on circuit board and eddy current coil and electric capacity composition antiresonant circuit, as long as have sheet metal close to eddy current coil, impedance just becomes the monotropic function of above-mentioned distance, then is recorded the distance of sheet metal by eddy current effect principle.
The operation principle of measurement thickness of the present utility model is:
Drivewheel 3 is to be driven by motor and drive mechanism to rotate, drivewheel 3 drives passive thickness measuring wheel 4 rotation, bank note 6 passes through from the gap between drivewheel 3 and passive thickness measuring wheel 4, bank note 6 just enters in bank note 6 measurer for thickness of the present invention, and drive passive thickness measuring wheel 4 to be upwards subjected to displacement, the movable end 73 of passive thickness measuring wheel 4 drive thickness measuring wheel support 7 rotates around it end 74 and rotates up, and this displacement is delivered to the upper surface of sheet metal 8.The i.e. thickness of bank note 6 is identical with the distance that sheet metal 8 shifts up.In like manner, upwards there are how many displacements in passive thickness measuring wheel 4, distance between sheet metal 8 with eddy current coil 12 will reduce as distance, distance change between sheet metal and eddy current coil 12 before this is converted into the impedance variation of eddy current coil 12, being completed the impedance conversion to numeral by the inductive impedance transducer LDC1000 on circuit board 1 the most again, the single-chip microcomputer passing to circuit board the most again processes.
Claims (10)
1. a banknote thickness gauge, it is characterized in that: include pedestal, circuit board, and at least two mechanism for measuring thick, described mechanism for measuring thick includes drivewheel, passive thickness measuring wheel, thickness measuring wheel support and sheet metal, pedestal top is located at by described circuit board, the turning end of described thickness measuring wheel support is articulated on pedestal, described passive thickness measuring wheel rotates the movable end being arranged at thickness measuring wheel support, the sheet metal of the corresponding each mechanism for measuring thick of described circuit board is provided with eddy current coil, first end of described sheet metal is located on pedestal, second end of sheet metal is connected on the movable end of thickness measuring wheel support and is positioned at below eddy current coil, described drivewheel is located at the side of passive thickness measuring wheel and takes turns frictional drive with passive thickness measuring.
Banknote thickness gauge the most according to claim 1, it is characterised in that: the position of the axle center of described drivewheel, pedestal, sheet metal and circuit board is fixing.
Banknote thickness gauge the most according to claim 2, it is characterised in that: the position of the axle center of described passive thickness measuring wheel and the movable end of thickness measuring wheel support is variable.
Banknote thickness gauge the most according to claim 2, it is characterized in that: the movable end correspondence sheet metal of described thickness measuring wheel support is provided with projection, the top of pedestal is provided with cavity, cavity respective protrusions is provided with through hole, the described through hole that projects through stretches into cavity, described sheet metal is between eddy current coil and projection, and described cavity, sheet metal, eddy current coil constitute resonator cavity.
Banknote thickness gauge the most according to claim 4, it is characterised in that: described projection is positioned at the side of the movable end of thickness measuring wheel support, and described passive thickness measuring wheel rotates the opposite side of the movable end being arranged at thickness measuring wheel support.
Banknote thickness gauge the most according to claim 1, it is characterised in that: the shape of the second end of described sheet metal and the mating shapes of eddy current coil, the diameter of the second end of described sheet metal is more than or equal to the diameter of eddy current coil.
Banknote thickness gauge the most according to claim 1, it is characterised in that: described banknote thickness gauge includes that 12 mechanism for measuring thick, 12 mechanism for measuring thick are disposed side by side on pedestal, and corresponding 12 mechanism for measuring thick in the bottom of described circuit board are provided with 12 eddy current coils.
Banknote thickness gauge the most according to claim 6, it is characterised in that: described sheet metal is made up of the rustless steel that 0.3mm is thick.
Banknote thickness gauge the most according to claim 7, it is characterised in that: described circuit board is made up of four layers of printed board overlap, and the upper-lower position of the eddy current coil in four layers of printed board is corresponding, and the eddy current coil in four layers of printed board is sequentially connected in series.
Banknote thickness gauge the most according to claim 9, it is characterised in that: the corresponding each vorticity line of described circuit board is provided with inductive impedance transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620182548.7U CN205428008U (en) | 2016-03-10 | 2016-03-10 | Note thickness measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620182548.7U CN205428008U (en) | 2016-03-10 | 2016-03-10 | Note thickness measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN205428008U true CN205428008U (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620182548.7U Active CN205428008U (en) | 2016-03-10 | 2016-03-10 | Note thickness measuring device |
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| CN (1) | CN205428008U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108038956A (en) * | 2017-12-26 | 2018-05-15 | 深圳怡化电脑股份有限公司 | Paper money safety line detection method and device |
| CN108444364A (en) * | 2018-03-21 | 2018-08-24 | 山东皓宇橡胶有限公司 | Automatic measuring thickness device |
| CN109949477A (en) * | 2019-03-28 | 2019-06-28 | 广州广电运通金融电子股份有限公司 | Banknote access device, note distribution regulating mechanism and adjusting method |
-
2016
- 2016-03-10 CN CN201620182548.7U patent/CN205428008U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108038956A (en) * | 2017-12-26 | 2018-05-15 | 深圳怡化电脑股份有限公司 | Paper money safety line detection method and device |
| CN108444364A (en) * | 2018-03-21 | 2018-08-24 | 山东皓宇橡胶有限公司 | Automatic measuring thickness device |
| CN109949477A (en) * | 2019-03-28 | 2019-06-28 | 广州广电运通金融电子股份有限公司 | Banknote access device, note distribution regulating mechanism and adjusting method |
| CN109949477B (en) * | 2019-03-28 | 2021-06-08 | 广州广电运通金融电子股份有限公司 | Banknote storing and taking device, banknote distribution adjusting mechanism and adjusting method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |