Summary of the invention
Problem to be solved by this invention provide a kind of needs more in a narrow margin the magnetic head of face can read safety line information, thereby the bank note safety line pick-up unit that reduces cost.
According to an aspect of the present invention, provide a kind of bank note safety line pick-up unit, having comprised: magnetic testing agency, comprise head stack, be provided with magnetic head in the head stack, magnetic head arranges movably along being parallel to the bank note safety line bearing of trend; Control gear, testing agency is connected with magnetic, is used for aiming at magnetic head time control magnetic head processed in the safety line of bank note and moves along the bank note safety line bearing of trend, reads magnetic data, and judges the true and false of bank note according to the magnetic data that reads.
Further, also comprise the bank note conveying mechanism, be connected with control gear, be used for vertically carrying bank note along the paper feed passage.
Further, also comprise bank note testing agency, be arranged on magnetic testing agency upstream along the bank note throughput direction, be connected with control gear, be used for when bank note is vertically imported the paper feed passage, detecting on the bank note whether bank note safety line is arranged; Control gear also is used for after bank note testing agency detects bank note safety line is arranged, and control bank note conveying mechanism is delivered to the precalculated position along the bank note throughput direction with bank note, and wherein, in the precalculated position, bank note safety line is aimed at magnetic head.
Further, bank note testing agency also is used for detecting whether there is bank note when bank note is vertically imported the paper feed passage; Control gear also be used for bank note testing agency detect have bank note after, control bank note conveying mechanism is carried bank note along the bank note throughput direction.
Further, bank note testing agency comprises first sensor; First sensor is exported first signal when detecting bank note, output secondary signal when detecting bank note safety line; Control gear is controlled the bank note conveying mechanism and is carried bank note along the paper feed passage when receiving first signal, when receiving secondary signal bank note is delivered to the precalculated position.
Further, bank note testing agency comprises first sensor and second sensor, is arranged side by side along the direction perpendicular to the paper feed passage; First sensor is exported first signal when detecting bank note, output secondary signal when detecting bank note safety line, and second sensor is exported the 3rd signal when detecting bank note, export the 4th signal when detecting bank note safety line; After control gear receives first signal or the 3rd signal, control bank note conveying mechanism is carried bank note along the paper feed passage, when receiving secondary signal and the 4th signal, bank note is delivered to the precalculated position, wherein, when time interval that first sensor output secondary signal and second sensor are exported the 4th signal during above the Preset Time interval of delta t, control gear control bank note conveying mechanism withdraws from bank note from the paper feed passage along the direction opposite with the bank note throughput direction, wherein, the Preset Time interval of delta t is less than or equal to magnetic head in the size of the bank note throughput direction transporting velocity divided by bank note.
Further, head stack also comprises magnetic head seat and guide, and wherein, guide is along extending perpendicular to the bank note throughput direction and supporting the magnetic head seat, and wherein, magnetic head is fixed on the magnetic head seat, and the magnetic head seat is along the mobilizable setting of the bearing of trend of guide.
Further, guide is the axis of guide or track, and the quantity of guide is one or two.
Further, magnetic testing agency also comprises the head position detection components, the head position detection components comprises the 3rd sensor, be used for when magnetic head is positioned at the initial position of shift motion, exporting initial position signal to control gear, wherein, control gear also is used for the movement according to above-mentioned initial position signal control head.
Further, the head position detection components also comprises four-sensor, is used for when magnetic head is positioned at the final position of shift motion to control gear output termination position signalling, and wherein, control system also is used for the movement according to final position signal controlling magnetic head.
Further, the bank note conveying mechanism comprises the first conveying roller group and the second conveying roller group, is separately positioned on the upstream and downstream of head stack along the bank note throughput direction.
Further, the running roller point of contact line of the first conveying roller group and the second conveying roller group and the surface of magnetic head overlap or are lower than the surface of magnetic head.
According to another aspect of the present invention, provide a kind of bank note safety line detection method, having comprised: when the bank note safety line of bank note was aimed at magnetic head, control head moved along the bank note safety line bearing of trend, reads magnetic data; And according to the magnetic data judgement forge or true or paper money that reads.
Further, before control head moved along the bank note safety line bearing of trend, method also comprised: the bank note safety line that detects bank note; And after detecting bank note safety line, bank note is delivered to the precalculated position, wherein, in the precalculated position, safety line is aimed at magnetic head.
Further, before control head moved along the bank note safety line bearing of trend, method also comprised: the position of detecting the bank note safety line of bank note; After detecting bank note safety line, judge the position relation of bank note safety line and magnetic head; To such an extent as to when bank note safety line too tilts magnetic head can't cover whole safety line in moving process the time, bank note is withdrawed from; When magnetic head can cover whole safety line in moving process, bank note is delivered to the precalculated position, wherein, in the precalculated position, bank note safety line is aimed at magnetic head.
The present invention has following beneficial effect:
1. because in this bank note safety line pick-up unit, magnetic head arranges movably along being parallel to the bank note safety line bearing of trend, and control gear can be aimed at magnetic head time control magnetic head processed at bank note safety line and move along the bank note safety line bearing of trend, to read magnetic data, therefore, only the magnetic head of face can move along the bank note safety line direction and read magnetic data in a narrow margin, is conducive to reduce equipment cost.
2. owing to can also comprise bank note testing agency in this bank note safety line pick-up unit, can detect whether safety line is arranged on the bank note, thereby control gear can be controlled the bank note conveying mechanism bank note is delivered to the precalculated position that safety line is aimed at magnetic head after bank note testing agency detects safety line, and then magnetic data is read in the control head motion again, has realized automatically bank note safety line being aimed at magnetic head.
3. owing to bank note testing agency can comprise along two sensors that are arranged side by side perpendicular to the bank note throughput direction at the back-note feeder place of bank note safety line pick-up unit, when the time that two sensor outputs detect the signal of safety line surpasses the Preset Time interval, control gear control bank note conveying mechanism withdraws from the entrance of bank note from the bank note safety line pick-up unit, in the time of can avoiding using single-sensor on the one hand, thereby the problem of flase drop survey location mistake owing to the bank note local pollution, also can avoid on the other hand because the angle of inclination between bank note and the paper feed passage is excessive, the magnetic head motion can not read the full detail of safety line when reading the safety line magnetic data, thereby misinterpretation bank note is the problem of counterfeit money.This just makes that the more stable work of bank note safety line pick-up unit is reliable.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
As shown in Figures 2 and 3, the bank note safety line pick-up unit comprises magnetic testing agency 1 and control gear (not shown), and wherein, magnetic testing agency 1 comprises head stack 11, is provided with magnetic head 111 in the head stack 11.Magnetic testing agency 1 is for detection of the magnetic information of bank note safety line, and its head stack 11 arranges movably along being parallel to the bank note safety line bearing of trend; Control gear is connected with magnetic testing agency 1, moves along the bank note safety line bearing of trend for control head 111 when the safety line of bank note is aimed at magnetic head 111, reads magnetic data, and judges the true and false of bank note according to the magnetic data that reads.
Be appreciated that by mentioned earlier, in bank note safety line pick-up unit of the present invention, magnetic head arranges movably along being parallel to the bank note safety line bearing of trend, and control gear can move along the bank note safety line bearing of trend by control head when the safety line of bank note is aimed at magnetic head 111, to read magnetic data, therefore, only the magnetic head of face can move along the bank note safety line direction and read magnetic data in a narrow margin, is conducive to reduce equipment cost.
Preferably, in according to the first embodiment of the present invention, the bank note safety line pick-up unit also comprises bank note conveying mechanism 2, this bank note conveying mechanism 2 is connected with control gear, be used for vertically carrying bank note at the control lower edge of control gear paper feed passage, bank note is delivered to magnetic testing agency 1, and after finishing detection, bank note is sent the bank note safety line pick-up unit.
More preferably, in according to the first embodiment of the present invention, this bank note safety line pick-up unit also comprises bank note testing agency 3, is arranged on the upstream of magnetic testing agency 1 along the bank note throughput direction, be used for when bank note is vertically imported the paper feed passage, safety line has or not in the detection bank note; Control gear is connected with bank note testing agency 3, after bank note testing agency 3 detects bank note safety line is arranged, control bank note conveying mechanism 2 is delivered to precalculated position and control head 111 along perpendicular to bank note throughput direction (being the direction that bank note safety line extends) motion along the bank note throughput direction with bank note, magnetic head 111 reads the magnetic information on the bank note safety line, and according to the magnetic data judgement forge or true or paper money that reads, wherein, above-mentioned bank note throughput direction is the direction from bank note testing agency 3 to magnetic testing agency 1, wherein, in the precalculated position, bank note safety line is aimed at magnetic head 111.
Be appreciated that by mentioned earlier, in bank note safety line pick-up unit of the present invention, bank note testing agency, can detect whether safety line is arranged on the bank note, thereby control gear can be controlled the bank note conveying mechanism bank note is delivered to the precalculated position that safety line is aimed at magnetic head after bank note testing agency detects safety line, and then magnetic data is read in the control head motion again, therefore, only the magnetic head of face can move along the bank note safety line direction and read magnetic data in a narrow margin, has realized automatically bank note safety line being aimed at magnetic head.
As shown in Figure 3, in according to the first embodiment of the present invention, bank note conveying mechanism 2 comprises transport driving 23, be used for driving conveying mechanism 2, carry thereby finish bank note, control gear is according to the signal of bank note testing agency 3 outputs, and control driving mechanism 23 drives conveying mechanism 2 and carries bank note.In addition, preferably, bank note testing agency 3 also is used for detecting having or not of bank note when bank note is vertically imported the paper feed passage, and control gear is after bank note testing agency 3 detects the back-note feeder place bank note is arranged, and control bank note conveying mechanism 2 is carried bank note along bank note throughput direction mentioned above automatically.
Preferably, in the present embodiment, magnetic testing agency 1 comprises head stack 11, magnetic head driven unit 15, wherein comes control head driven unit 15 by control gear, and then drives head stack 11 motions.More preferably, magnetic testing agency 1 also comprises head position detection components 16.Head stack 11 comprises magnetic head 111, magnetic head seat 112, and guide 113, and wherein, more preferably, guide 113 can be the axis of guide, also can be track, and its quantity can be one or two, and the mode of the axis of guide or track is simple and easy to realize.Guide 113 is along extending perpendicular to the bank note throughput direction, and its two ends are by the frame support of bank note safety line testing agency; Magnetic head seat 112 is supported by guide 113, can be along the bearing of trend back and forth movement of guide 113.In the present embodiment, guide 113 is two axis of guides.Guide 113 is perpendicular to the bank note throughput direction, and across the paper feed passage, its two ends are by the frame support of bank note safety line testing agency; Magnetic head seat 112 and two guide 113 sockets are supported by guide 113, can axially come and go mobile along guide 113; Magnetic head 111 is fixedly mounted on the magnetic head seat 112, is used for reading the magnetic information of bank note safety line.This kind magnetic head seat adds the simple in structure of guide and has realized making magnetic head 111 along arranging movably perpendicular to the bank note throughput direction easily.
In the present embodiment, as shown in Figure 3, magnetic head driven unit 15 comprises motor 151, motor gear 152, driving gear set 153, and tooth bar 154.Wherein, tooth bar 154 is parallel to guide 113 and arranges, and tooth bar 154 length are determined according to the scope that magnetic head 111 moves.Tooth bar 154 is by driving gear set 153 and motor gear 152 engaged transmission that are fixedly mounted on 151 in the motor, simultaneously, tooth bar 154 is fixedlyed connected with magnetic head seat 112, under the driving of motor 151, tooth bar 54 is along the paper feed channel width direction, just the direction of carrying perpendicular to bank note moves, and it is mobile thereupon to drive the magnetic head 111 of fixedlying connected with magnetic head seat 112.Need to prove, magnetic head driven unit 15 is not limited to present embodiment and enumerates form, can also be by the cog belt assembly be set, cog belt in the cog belt assembly is fixedlyed connected with the magnetic head seat, the profile of tooth belt wheel of support toothed belt is connected with motor gear in the cog belt assembly, realizes that magnetic head moves along the paper feed channel width direction.
As indicated above, preferably, head position detection components 16 comprises the 3rd sensor 161, is used for exporting initial position signal to control gear when magnetic head 111 is positioned at the initial position of shift motion, and control gear is according to the movement of above-mentioned initial position signal control head 111.As shown in Figure 3, the 3rd sensor 161 can be arranged on the initial position of magnetic head shift motion, to detect the initial position of magnetic head 111.Be appreciated that magnetic head seat 112 is fixedlyed connected with tooth bar 154 again because magnetic head 111 is fixedly mounted on the magnetic head seat 112, therefore, also can pass through the position of the position probing magnetic head 111 of detection magnetic head seat 112 or tooth bar 154.
More preferably, head position detection components 16 can also comprise the four-sensor (not shown), and four-sensor is arranged on the final position of magnetic head shift motion, for detection of the final position of magnetic head.When magnetic head 111 is positioned at the final position of shift motion to control gear output termination position signalling; Control system is according to the movement of this this magnetic head 111 of final position signal controlling.The effect of this four-sensor can be described in more detail below.
Preferably, as shown in Figures 2 and 3, in the present embodiment, bank note conveying mechanism 2 comprises the first conveying roller group 21 and the second conveying roller group 22, be separately positioned on the upstream and downstream of head stack 11 along the bank note throughput direction, the bank note that is used for inserting from the porch is delivered to head stack 11, and after finishing the magnetic information that reads bank note safety line at magnetic head 111, bank note is sent bank note safety line testing agency.
In the present embodiment, as shown in Figure 2, the first conveying roller group 21 and the second conveying roller group 22 are made up of the running roller of a pair of tangent setting respectively.Fig. 4 a and Fig. 4 b are that two kinds of installation sites between bank note conveying mechanism 2 and the magnetic head 111 concern synoptic diagram.As shown in Fig. 4 a, the line that the running roller point of contact of the running roller point of contact of the first conveying roller group 21 and the second conveying roller group 22 forms overlaps with the surface of magnetic head 111; Perhaps as shown in Fig. 4 b, the running roller point of contact of the running roller point of contact of the first conveying roller group 21 and the second conveying roller group 22 is lower than the surface of magnetic head 111 and a side of closing on magnetic head 111, thereby make bank note by 2 clampings of bank note conveying mechanism and when carrying, can be close to magnetic head 111 surfaces.When the first conveying roller group 21 overlaps with magnetic head 111 surfaces with the roller point of contact line of the second conveying roller group 22, the bank note state is track A as shown in Fig. 4 a, when the running roller point of contact of the running roller point of contact of the first conveying roller group 21 and the second conveying roller group 22 was lower than the surface of magnetic head 11 and closes on a side of magnetic head 111, the bank note state is track A as shown in Fig. 4 b.
In the present embodiment, bank note testing agency 3 comprises first sensor 31, along the bank note throughput direction, first sensor 31 is arranged on the porch of bank note safety line testing agency, be positioned at the upstream of the first conveying roller group 21, whether there is bank note for detection of the porch, and having or not for detection of safety line on the bank note.First sensor 31 is exported first signal when detecting bank note, output secondary signal when detecting bank note safety line; Control gear is controlled bank note conveying mechanism 2 and is carried bank note along the direction of paper feed passage when receiving first signal, when receiving secondary signal bank note is delivered to precalculated position mentioned above, and in the precalculated position, bank note safety line is aimed at magnetic head 111.First sensor 31 has been realized carrying bank note in trend bank note safety line pick-up unit, has realized simultaneously bank note is delivered to the precalculated position that safety line is aimed at magnetic head.
The driving mechanism 23 of bank note conveying mechanism 2 and the first conveying roller group 21 and the second conveying roller group 22 are in transmission connection, and being used for providing power transporting bank note for the first conveying roller group 21 and the second conveying roller group 22 in the paper feed passage under the control of control gear.
Introduce the course of work of bank note safety line pick-up unit provided by the invention below.
Bank note vertically is placed on entrance, and this moment, safety line was vertical with the bank note throughput direction.Because the material of bank note is different with the material of safety line, therefore, the signal of exporting when first sensor 31 detects safety line on bank note and the bank note is different.When bank note covers first sensor 31 surface of bank note testing agency 3, first sensor 31 outputs first signal, signals such as the voltage that this first signal is certain limit or electric current, for example this scope greater than threshold value 1 less than threshold value 2; When if the safety line on the bank note covers first sensor 31 surface, first sensor 31 output secondary signals, this secondary signal are signals such as the voltage of another scope or electric current, and for example this scope is greater than threshold value 2.Like this, control gear can judge whether the porch exists bank note or judge the safety line that whether detects bank note according to the size of first sensor 31 output signals.If first sensor 31 output signals are less than threshold value 1, control gear judges that the porch does not have bank note; If first sensor 31 output signals are more than or equal to threshold value 1, during less than threshold value 2, control gear judges that there is bank note in the porch; When first sensor 31 output signals during more than or equal to threshold value 2, control gear is judged and is detected bank note safety line.When control gear judges that there is bank note in the porch, driving mechanism 23 in the control gear control bank note conveying mechanism 2 drives the first conveying roller group 21 and the second conveying roller group 22 begins to rotate simultaneously, to the entrance downstream, namely mentioned abovely carry bank note along the bank note throughput direction.In the process of carrying bank note, first sensor 31 continues to detect, when the safety line of bank note moved to first sensor 31 surfaces, first sensor 31 output signals were greater than threshold value 2, and the control gear judgement detects bank note safety line, control gear picks up counting, behind first schedule time t1, control driving mechanism 23 stops operating, thus the first conveying roller group 21 in the bank note conveying mechanism 2 and 22 stop motions of the second conveying roller group, at this moment, bank note safety line is over against magnetic head 111 center lines.Be appreciated that schedule time t1 is determined by distance and the bank note transmission speed of first sensor 31 to magnetic head 111 center lines.
After 2 stop motions of bank note conveying mechanism, control gear judges according to the 3rd sensor 161 detection signals of head position detection components 16 whether magnetic head 111 is positioned at initial position.When magnetic head 111 was not positioned at initial position, control gear control head driven unit 15 drove head stack 112 and moves, and it is mobile thereupon to drive magnetic head 111, detects magnetic head 111 until the 3rd sensor 61, makes magnetic head 111 get back to initial position.After magnetic head 11 is positioned at initial position, the motor 151 of control gear control head driven unit 15 rotates, driving tooth bar 154 moves, thereby it is mobile thereupon to drive magnetic head 111 by the magnetic head seat 112 of fixedlying connected with tooth bar 154, in the process that magnetic head 111 moves, magnetic head 111 reads the magnetic data on the bank note safety line.
After magnetic head 111 moved preset distance, the motor of control gear control head driven unit 15 was oppositely mobile, drove tooth bar 154 and moved, and got back to initial position.
Need to prove, when head position detection components 16 also comprises four-sensor, control gear is according to the signal of the 3rd sensor 61 and four-sensor output, judge whether magnetic head 111 is positioned at initial position or the final position of shift motion, when the 3rd sensor 161 or four-sensor are surveyed less than magnetic head 111, be magnetic head 111 between initial position and final position the time, control gear control head driven unit 15 drives magnetic heads 111 and gets back to initial position or final position.With head position detection components 16 sensor only is set and compares, at magnetic head shift motion two ends sensor is set respectively, after making each magnetic head finish safety line information to read, needn't return initial position again, reduced operation steps, therefore shortened the running time.
Simultaneously, control gear is decoded to the magnetic data that magnetic head 111 reads, and decoded information and tentation data compared, if decoded information conforms tentation data, judge that then bank note is genuine note, the first conveying roller group 21 and the second conveying roller group 22 that control gear control driving mechanism 23 drives in the conveying mechanism 2 continue motion, and bank note is sent from outlet; Otherwise control gear judges that bank note is counterfeit money, then drives 2 counter motions of bank note conveying mechanism, and bank note is withdrawed from from entrance.
Fig. 5 is the second embodiment plan structure synoptic diagram according to bank note safety line of the present invention testing agency.Present embodiment and a last embodiment difference are that the bank note testing agency 3 in the present embodiment also comprises second sensor 32, as shown in the figure, second sensor 32 is parallel to the magnetic head travel direction with first sensor 31 edges, just is arranged side by side along the direction perpendicular to the paper feed passage.
First sensor 31 is exported first signal when detecting bank note, output secondary signal when detecting bank note safety line, and second sensor 32 is exported the 3rd signal when detecting bank note, export the 4th signal when detecting bank note safety line; After control gear received first signal or described the 3rd signal, control bank note conveying mechanism 2 was carried bank note along the paper feed passage, when receiving secondary signal and the 4th signal at the same time bank note was delivered to the precalculated position of safety line aligning magnetic head 111.Wherein, when the time interval of first sensor 31 output secondary signals and second sensor, 32 outputs the 4th signal surpasses the Preset Time interval of delta t, control gear control bank note conveying mechanism 2 withdraws from the entrance of bank note from the bank note safety line pick-up unit along the direction opposite with above-mentioned bank note throughput direction, wherein, this Preset Time interval of delta t is less than or equal to described magnetic head 111 in the size of the bank note throughput direction transporting velocity divided by bank note.
Introduce the present embodiment course of work below.
Bank note vertically is placed on entrance, and this moment, safety line was vertical with the bank note throughput direction.According to the size of first sensor 31 and second sensor, 32 output signals, control gear can judge whether the porch exists bank note or judge the safety line that whether detects bank note.If first sensor 31 and second sensor, 32 output signals are during all less than threshold value 1, just, when not having the output of first to fourth signal, control gear judges that the porch does not have bank note; If any sensor output signal is more than or equal to threshold value 1 in first sensor 31 or second sensor 32, during less than threshold value 2, when just control gear received the first or the 3rd signal, control gear judged that there is bank note in the porch; If first sensor 31 and second sensor, 32 output signals are during all more than or equal to threshold value 2, control gear is judged and is detected bank note safety line.
When control gear judged that there is bank note in the porch, control gear control driving mechanism 23 drove 2 motions of bank note conveying mechanism, carries bank note along the bank note throughput direction.In carrying the process of bank note, when the signal value of first sensor 3 and 32 outputs of second sensor during all greater than threshold value 2, control gear picks up counting, and through after the schedule time, conveying mechanism 2 stops operating.
Need to prove, do not have under the situation about in passage, moving on the bias at bank note, the safety line of bank note is parallel with second sensor, 32 lines with first sensor 31, when the safety line of bank note moves to first sensor 31 and second sensor, 32 surfaces, first sensor 31 and second sensor 32 detect bank note safety line simultaneously, therefore, when the output signal of first sensor 31 and second sensor 32 during simultaneously greater than threshold value 2, control gear picks up counting, behind first schedule time t1, bank note conveying mechanism 2 stops operating, at this moment, the safety line of bank note is over against the center of magnetic head 111, and is identical with first embodiment, and first schedule time t1 is by first sensor 31 determining apart from d1 and bank note transmission speed to magnetic head 111 center line 111a.
Under the situation that bank note moves in passage on the bias, there is angle in the line of the safety line of bank note and first sensor 31 and second sensor 32, and therefore, bank note safety line successively passes through first sensor 31 and second sensor 32.When first sensor 31 and second sensor 32 when exporting signal greater than threshold value 2 in the Δ t successively interval time, control gear picks up counting during greater than the signal of threshold value 2 in back sensor output, behind second schedule time t2, control bank note conveying mechanism 2 stops operating.Second schedule time t2 is by first sensor 31 determining apart from d2 and bank note transmission speed to magnetic head 111 upstream edge 111b.
Export interval time greater than the signal of threshold value 2 successively during greater than Δ t when first sensor 31 and second sensor 32, control gear control conveying mechanism withdraws from bank note along the direction opposite with the bank note throughput direction, just bank note is withdrawed from by entrance.
The setting of Δ t is relevant with the width of magnetic head 111, in theory Δ t smaller or equal to the magnetic head width divided by the bank note transporting velocity.Therefore, in the time of the Δ t+t2 that the safety line that a sensor from bank note testing agency 3 at first detects bank note stops operating to control gear control bank note conveying mechanism 2, the fed distance of bank note arrives magnetic head 111 upstream edge 111b apart from d2 and magnetic head width h sum smaller or equal to first sensor 31, therefore, when bank note stops, even bank note tilts, the safety line that tilts still can be covered by the magnetic head width, thereby guarantee that magnetic head in moving process, can read the full detail of the bank note safety line of inclination.
After bank note conveying mechanism 2 stopped operating, control gear judged according to the signal of the 3rd sensor 161 outputs whether magnetic head is positioned at initial position.When magnetic head is not positioned at initial position, drives magnetic head and move to initial position; When magnetic head was positioned at initial position, the motor 151 of control gear control head driving mechanism 15 rotated, and drive tooth bar 154 and move, thereby it is mobile thereupon to drive magnetic head 111, and in the process that magnetic head 111 moves, magnetic head 111 reads the magnetic data on the bank note safety line.
Control gear is decoded to the magnetic data that magnetic head 111 reads, and decoded information and tentation data compared, if decoded information conforms tentation data, judge that then bank note is genuine note, control gear control driving mechanism 23 drives bank note conveying mechanism 2 and is rotated further, and bank note is sent from outlet; Otherwise control gear judges that bank note is counterfeit money, then controls bank note conveying mechanism 2 backward rotation, and bank note is withdrawed from from entrance.
Present embodiment is compared with a last embodiment, after carrying out the bank note alignment, use two sensors arranged side by side to detect bank note safety line, present embodiment has two big advantages, two sensors arranged side by side detect respectively simultaneously on the one hand, in the time of can avoiding using single-sensor, thereby wrong problem be located in the flase drop survey owing to the bank note local pollution; On the other hand, two sensors arranged side by side simultaneously or interval time Δ t detect bank note safety line, also can avoid because bank note and paper feed passage angle of inclination are excessive, when laterally moving, magnetic head can not read the full detail of bank note safety line, and the erroneous judgement bank note that causes is the problem of counterfeit money, so the bank note safety line that present embodiment provides detects more reliable.
Fig. 6 is the process flow diagram according to first embodiment of bank note safety line detection method of the present invention.The detailed process of this method is as follows:
Step S10, when the bank note safety line of bank note was aimed at magnetic head, control head moved along the bank note safety line bearing of trend, reads magnetic data.
Step S11 judges forge or true or paper money according to the magnetic data that reads.
This process is above having a detailed description, does not repeat them here.Because the step S10 of this method is that control head moves along the bank note safety line bearing of trend, reads magnetic data, makes magnetic head can read the magnetic data of whole bank note safety line for narrower breadth, is conducive to reduce the cost of magnetic checkout equipment.
Fig. 7 is the process flow diagram according to second embodiment of bank note safety line detection method of the present invention.The detailed process of this method is as follows:
Step S20, the position of the bank note safety line of detection bank note.
Step S21 is delivered to the precalculated position with bank note, and wherein, in this precalculated position, safety line is aimed at magnetic head.
Step S22, control head moves along the bank note safety line bearing of trend, reads magnetic data.
Step S23 judges forge or true or paper money according to the magnetic data that reads.
Be appreciated that when by step S20 the position probing of bank note safety line being arrived, and when position signalling imported control gear, namely can with the schedule time bank note be delivered to the precalculated position that safety line is aimed at magnetic head at a predetermined velocity by control gear.Can moving head in this position to carry out reading of bank note safety line.
Fig. 8 is the process flow diagram according to the 3rd embodiment of bank note safety line detection method of the present invention.The detailed process of this method is as follows:
Step S30, the position of the bank note safety line of detection bank note.
Step S31 judges that the position of bank note safety line and magnetic head concerns that particularly, can the magnetic head moving process cover whole safety lines.
To such an extent as to when bank note safety line too tilts magnetic head along can't cover whole safety line in the moving process time, enter step S32, the opposite direction of bank note along the bank note throughput direction withdrawed from;
When magnetic head can cover whole safety line in moving process, enter step S33, bank note is delivered to the precalculated position, wherein, in this precalculated position, safety line is aimed at magnetic head.
After step S33, execution in step S34 and step S35 successively, wherein, step S34 is: control head moves along the bank note safety line bearing of trend, reads magnetic data.Step S35 is to judge forge or true or paper money according to the magnetic data that reads.
Be appreciated that, because whether can judge bank note safety line among the step S31 places to such an extent that too tilt, when too tilting, entering step 32 withdraws from the opposite direction of bank note along the bank note throughput direction, can avoid because the angle of inclination between bank note and the paper feed passage is excessive, the magnetic head motion can not read the full detail of safety line when reading the safety line magnetic data, thereby misinterpretation bank note is the problem of counterfeit money.This just makes that the more stable work of bank note safety line pick-up unit is reliable.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.