CN109186449A - A kind of depth detection method of double-interface smart card internal antenna - Google Patents
A kind of depth detection method of double-interface smart card internal antenna Download PDFInfo
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- CN109186449A CN109186449A CN201811254970.9A CN201811254970A CN109186449A CN 109186449 A CN109186449 A CN 109186449A CN 201811254970 A CN201811254970 A CN 201811254970A CN 109186449 A CN109186449 A CN 109186449A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/26—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring depth
Abstract
The present invention discloses a kind of depth detection method of double-interface smart card internal antenna, include the next steps: (1) milling cutter mechanism carries out milling to the card in detection station, signal emission module below detection station is set and continuously sends out detection signal, signal receiving module above detection station is set and receives the detection signal, control module monitors the received detection signal of signal receiving module institute in real time；(2) when milling cutter touches the internal antenna of card, the internal antenna of milling cutter and card is linked together, so that the electromagnetic resistivity moment between signal emission module and signal receiving module becomes larger, so that detection signal received by signal receiving module is mutated, after the control module detects effective sign mutation, feedback signal is issued to milling cutter mechanism, allows milling cutter mechanism stopping to continue to decline, while registered depth.The present invention accurately detects the depth of card internal antenna, improves the precision of card groove milling, reduces the rejection rate of card processing.
Description
Technical field
The present invention relates to a kind of smart card groove milling methods, and in particular to a kind of depth detection of double-interface smart card internal antenna
Method.
Background technique
Double-interface card is based on single-chip, integrates the smart card of contact Yu contactless structure, has two
A operation interface, the access to chip can be by the contact of the way of contact, can also be by separated by a distance, a radio frequency
Mode carrys out access chip.The Ka Tinei of double-interface card is equipped with antenna and chip, wherein antenna is pressed from both sides and in card body, chip is embedding
Enter on card body and contact is exposed outside, the both ends of antenna are connect with chip；It is realized by the induction of the antenna and card reader
Non-contact card reading realizes contact card reading by the charging of the chip and reader contact.
The main production process of double-interface card are as follows: the card body of built-in antenna is made up of laminated mode first, wherein day
Two ends of line are located in the same area, the region chip in future.Then by smart card groove milling equipment in above-mentioned area
Groove milling in domain comes so that the end of antenna can show that.The encapsulation for finally carrying out chip, specifically there is following two encapsulation side
Antenna is provoked by Yarn taking-up mechanism in formula, (1), and chip is welded on above, completes encapsulation；(2) leads ends of chip are direct
It is encapsulated in the slot that antenna is shown, without carrying out take-up.
In the groove milling technique of above-mentioned production process, majority smart card groove milling equipment is using constant depth groove milling at present
Method specifically carries out groove milling by a depth of setting to a batch of double-interface card；But due to process flow and technology
The influence of the factors such as cost limitation, causes the depth being laminated in card with the antenna of a batch of double-interface card inconsistent, and
This method can not carry out the real-time compensation of depth when groove milling equipment carries out groove milling to card again, to be easy to cause on card
The depth of groove milling is too deep by antenna milling is disconnected or the depth of groove milling is excessively shallow and is unable to complete effective chip package, and then causes
The rejection rate of processing rises.
Authorization Notice No. is that the patent of invention file of CN103791808B discloses a kind of " depth of double-interface card internal antenna
Detection device and detection method ", wherein antenna depth detection method disclosed in this document specifically: before formal groove milling, first exist
The groove location to be milled of card mills downwards detection hole, when milling detection hole when milling cutter by insulating layer mill off and with antenna contact after, milling
Half knife of a left side of knife and right half knife are connected to form power circuit by antenna, and control milling cutter by control system and stop continuing down
Groove milling, while registered depth to obtain the antenna depth of the card, and carry out formal groove milling according to the depth recorded.
Although antenna depth detection method disclosed in the patent of invention is capable of detecting when the antenna depth of every card to groove milling, need
Half knife of a left side and right half knife for wanting milling cutter come into full contact with the conducting for being just able to achieve circuit, therefore sunkening cord when two strip antennas with antenna
When depth is inconsistent, milling cutter is easy to appear just and when wherein a strip antenna contacts, and circuit still access failure, milling cutter continues to moving down
Dynamic certain distance is just able to achieve the conducting of circuit, causes recorded antenna depth bigger than exact value, so as to cause formally milling
Slot is to be easy to damage on antenna, increases rejection rate.
Summary of the invention
The purpose of the present invention is to overcome the deficiency in the prior art, provides a kind of depth detection of double-interface smart card internal antenna
Method, the detection method can accurately detect the depth of card internal antenna, improve the precision of card groove milling, convenient for subsequent
Take-up processing, reduces the rejection rate of card processing.
The purpose of the present invention is achieved through the following technical solutions:
A kind of depth detection method of double-interface smart card internal antenna, which comprises the following steps:
(1) milling cutter mechanism carries out milling to the card to be detected for being located at detection station, is arranged in below detection station
Signal emission module continuously sends out detection signal, and the signal receiving module above detection station is arranged in and receives the detection letter
Number, control module monitors the received detection signal of signal receiving module institute in real time；
(2) when the milling cutter in milling cutter mechanism touches the internal antenna of card, the internal antenna of milling cutter and card is linked together,
So that the electromagnetic resistivity moment between signal emission module and signal receiving module becomes larger, so that received by signal receiving module
Detection signal be mutated, after the control module detects effective sign mutation, to milling cutter mechanism issue feedback letter
Number, allow milling cutter mechanism stopping to continue to decline, while registered depth.
A preferred embodiment of the invention, the detection signal that the signal emission module issues are 13.56MHz electromagnetic wave letter
Number, the signal receiving module is equipped with electromagnetic induction circuit；13.56MHz electromagnetic wave signal passes through to be checked in detection station
Arriving signal receiving module after survey card, and a voltage signal is generated by electromagnetic induction, the control module is to the electricity
Pressure signal is monitored in real time.The electromagnetic wave of 13.56MHz is the standard being widely used, and has been had in the market very
More concrete applications, using it as detection signal, convenient for the selection and setting of signal emission module and signal receiving module, and
Convenient for debugging and reducing cost；It will test signal (electromagnetic signal) by electromagnetic induction and be converted to voltage signal, so that control mould
Block is directly monitored the voltage on receiving module, so that the variation of signal is more easier to distinguish, is conducive to improve prison
Control precision.
A preferred embodiment of the invention, the control module are made of voltage comparator, wherein the voltage comparator
First input end is connect with signal receiving module, and the second input terminal is connect with mechanical resistance adjustment knob, voltage comparator
The connection of the control circuit of output end and milling cutter mechanism；
Before carrying out milling, the electricity that mechanical resistance adjustment knob manually sets the second input terminal of voltage comparator is first passed through
Pressing definite value；In milling cutter mechanism climb milling, detection signal received by signal receiving module is converted to voltage signal simultaneously
It is input in voltage comparator in real time, and the voltage signal constitutes the voltage fiducial value of voltage comparator；Milling cutter mechanism to
When lower progress milling, the voltage fiducial value is compared with voltage fixed value, when voltage fiducial value is fixed more than or equal to voltage
When value, voltage comparator output stops the control circuit of milling signal to milling cutter mechanism, and control milling cutter mechanism stops continuing downward
It is mobile, and record antenna depth；When voltage fiducial value is less than voltage fixed value, voltage comparator, which issues, continues milling signal extremely
The control circuit of milling cutter mechanism, milling cutter mechanism continue climb milling.Pass through the voltage fixed value and prison in real time in voltage comparator
The detection signal of survey is compared, and realizes the abrupt climatic change of detection signal, consequently facilitating determining whether milling cutter mechanism is sent out with antenna
Raw touching realizes depth finding by circuit structure, at low cost.Above-mentioned voltage fixed value and voltage fiducial value are absolute value.
Preferably, it is connected with sense light in the output end of voltage comparator, and it is small in voltage fixed value that the sense light is arranged
It is OFF state when voltage fiducial value, is lighting lamp state when voltage fixed value is greater than voltage fiducial value；Work as card
It is being waited when milling in detection station, is first passing through mechanical resistance adjustment knob and change resistance value, to change voltage comparator
In voltage fixed value, until the sense light becomes OFF state just from lighting lamp state, at this time in voltage comparator
Voltage fixed value it is equal with voltage fiducial value, i.e., the voltage fixed value be the card initial voltage value；Then start to carry out
Milling, when the sense light becomes lighting lamp state from OFF state, as milling cutter is contacted with the internal antenna of card, it was demonstrated that milling cutter
Milling finishes.By the setting of sense light, the state of sense light can be observed directly to determine the Initial Voltage Value of card,
Convenient for the setting manually to voltage fixed value；Also staff can be allowed to recognize the process in milling process simultaneously, work as sense
It when lamp being answered to become lighting lamp state from OFF state, that is, represents milling cutter and is contacted with antenna, milling depth at this time is the depth of antenna
Degree.
A preferred embodiment of the invention, the control module are made of processor, the input terminal and signal of the processor
The control circuit of receiving module connection, the other end and milling cutter mechanism connects；
After card to be detected is transported to detection station, the processor is first to the initial signal on signal receiving module
It is recorded；When the milling cutter in milling cutter mechanism touches the internal antenna of the card, and the detection signal on signal receiving module
When mutation, the detection signal after mutation is calculated with initial signal and show that sign mutation is poor by the processor
Value, while the sign mutation difference being compared with setting value；If sign mutation difference is less than setting value, processor is not issued
Feedback signal, milling cutter mechanism continue milling down, if sign mutation difference is greater than or equal to setting value, processor issues feedback letter
Number, milling cutter mechanism stops continuing milling down, registered depth.
This preferred embodiment first records an initial signal by processor before carrying out milling to card, so that it is guaranteed that every
The received detection signal of signal receiving module institute is accurately, to can be improved so just when card to be detected is located at detection station
The precision of the residual quantity of detection signal after beginning signal and mutation, so that the comparison result of the residual quantity and setting value is improved, into
And improve the detection depth of card internal antenna；In addition, processor can all be remembered when carrying out depth detection or groove milling due to every card
An initial signal value is recorded, therefore even if the internal antenna technique of same batch card piece has differences, is also able to carry out accurate depth
Detection and accurate groove milling, while also can adapt to the internal antenna depth detection of the card of different batches；In addition, if processor is remembered
The initial signal of record differs larger with the initial signal recorded with a batch of card, or is recorded with a batch of card
Initial signal Type-Inconsistencies, then can mark as the unqualified card in batch card, there is card Coil Detector function
Energy.
A kind of double-interface smart card internal antenna of the depth detection method suitable for the double-interface smart card internal antenna
Depth detection apparatus, which is characterized in that milling cutter mechanism, chucking mechanism, control module, signal hair including detection station is arranged in
Penetrate module and signal receiving module；Wherein, the milling cutter mechanism includes the vertical drive that milling cutter and driving milling cutter move up and down
Motivation structure；The lower section of detection station is arranged in the signal emission module, and detection station is arranged in the signal receiving module
Top, the signal emission module issue detection signal, are transmitted to signal after card to be detected and chucking mechanism and connect
It receives in module；The control module is connected with milling cutter mechanism, signal emission module and signal receiving module.
Preferably, the signal receiving module is equipped with the electromagnetic induction electricity that voltage signal is converted to for will test signal
Road module.It will test signal by electromagnetic induction circuit module and be converted to voltage signal, convenient for being received to signal for control module
Signal monitoring in module is conducive to the precision for improving depth detection.
Preferably, the control module is made of voltage comparator, wherein the first input end and letter of the voltage comparator
The connection of number receiving module, the second input terminal are connect with mechanical resistance adjustment knob, the output end and milling cutter of voltage comparator
The control circuit of structure connects.
The output end of the voltage comparator is connected with sense light.
Preferably, the control module is made of processor, and the input terminal of the processor is connect with signal receiving module, separately
The connection of the control circuit of one end and milling cutter mechanism.
Preferably, further include for show signal receiving module it is received receive signal display module, the display mould
Block is connected with control module.By the setting of display module, the specific value of voltage signal can intuitively be shown, just
In artificial monitoring.
Preferably, the milling cutter mechanism includes the chip position there are two milling cutter, on the milling cutter and card of two milling cutter mechanisms
The two sides set are corresponding；It is compared by two such milling cutters of setting so that milling out two detection holes in the two sides of chip position
In only milling a detection hole, so that the variation of detection signal is sensitiveer, be conducive to the depth detection precision for improving antenna.
Compared with the prior art, the invention has the following beneficial effects:
1, the present invention can accurately detect the depth of card internal antenna, improve the precision of card groove milling, it is ensured that will be interior
Antenna shows, reduce the rejection rate of card processing.
2, by the mutation of electromagnetic resistivity, realize the mutation of detection signal, so that it is determined that milling cutter whether with card internal antenna
Touching, and then detect the depth of card internal antenna, ingenious in design and detection accuracy is high；Especially relative to by milling cutter with
Being powered come the mode for the depth for judging internal antenna after internal antenna contact, as long as the milling cutter in the present invention is contacted with internal antenna one,
Will make the electromagnetic resistivity of signal will mutate, and detection is very sensitive, so that the groove milling of card is more accurate.
Detailed description of the invention
Fig. 1 is the main view of one of embodiment of the depth detection apparatus of double-interface smart card internal antenna of the invention
Structure diagram.
Fig. 2 is the top view after the groove milling of double-interface card piece.
Fig. 3 is the process of the first embodiment of the depth detection method of double-interface smart card internal antenna of the invention
Figure.
Fig. 4 is the schematic diagram of comparator.
Fig. 5 is the process of second of embodiment of the depth detection method of double-interface smart card internal antenna of the invention
Figure.
Specific embodiment
Below with reference to embodiment and attached drawing, the invention will be further described, but embodiments of the present invention are not limited only to
This.
Embodiment 1
Referring to figures 1-4, the depth detection method of the double-interface smart card internal antenna of the present embodiment, comprising the following steps:
(1) milling cutter mechanism carries out milling to the card to be detected 5 for being located at detection station, is arranged in below detection station
Signal emission module 1 continuously sends out detection signal, and the signal receiving module 3 above detection station is arranged in and receives the detection letter
Number, control module monitors the 3 received detection signal of institute of signal receiving module in real time；
(2) when the milling cutter 2 in milling cutter mechanism touches the internal antenna of card 5, milling cutter 2 and the internal antenna of card 5 are linked as
One, so that the electromagnetic resistivity moment between signal emission module 1 and signal receiving module 3 becomes larger, so that signal receiving module 3
Received detection signal is mutated, and after the control module detects effective sign mutation, is sent out to milling cutter mechanism
Feedback signal out allows milling cutter mechanism stopping to continue to decline, while registered depth.
The detection signal that the signal emission module 1 of this implementation issues is 13.56MHz electromagnetic wave signal, and the signal receives
Module 3 is equipped with electromagnetic induction circuit；13.56MHz electromagnetic wave signal reaches letter after passing through the card to be detected 5 in detection station
Number receiving module 3, and a voltage signal is generated by electromagnetic induction, the control module carries out the voltage signal real-time
Monitoring.The electromagnetic wave of 13.56MHz is the standard being widely used, and has had many concrete applications in the market, will
It is as detection signal, convenient for the selection and setting of signal emission module 1 and signal receiving module 3, and convenient for debugging and drop
Low cost；It will test signal (electromagnetic signal) by electromagnetic induction and be converted to voltage signal, so that control module is directly to reception
Voltage in module is monitored, so that the variation of signal is more easier to distinguish, is conducive to improve monitoring precision.
Referring to Fig. 3-Fig. 4, the control module is made of voltage comparator, wherein the first input of the voltage comparator
End connect with signal receiving module 3, the second input terminal is connect with mechanical resistance adjustment knob, the output end of voltage comparator and
The control circuit of milling cutter mechanism connects；
Before carrying out milling, the electricity that mechanical resistance adjustment knob manually sets the second input terminal of voltage comparator is first passed through
Pressing definite value；In milling cutter mechanism climb milling, detection signal received by signal receiving module 3 is converted to voltage signal simultaneously
It is input in voltage comparator in real time, and the voltage signal constitutes the voltage fiducial value of voltage comparator；Milling cutter mechanism to
When lower progress milling, the voltage fiducial value is compared with voltage fixed value, when voltage fiducial value is fixed more than or equal to voltage
When value, voltage comparator output stops the control circuit of milling signal to milling cutter mechanism, and control milling cutter mechanism stops continuing downward
It is mobile, and record antenna depth；When voltage fiducial value is less than voltage fixed value, voltage comparator, which issues, continues milling signal extremely
The control circuit of milling cutter mechanism, milling cutter mechanism continue climb milling.Pass through the voltage fixed value and prison in real time in voltage comparator
The detection signal of survey is compared, and realizes the abrupt climatic change of detection signal, consequently facilitating determining whether milling cutter mechanism is sent out with antenna
Raw touching realizes depth finding by circuit structure, at low cost.Above-mentioned voltage fixed value and voltage fiducial value are absolute value.
It is connected with sense light in the output end of voltage comparator, and the sense light is set and is less than or equal in voltage fixed value
It is OFF state when voltage fiducial value, is lighting lamp state when voltage fixed value is greater than voltage fiducial value；When card 5 is in detection work
Position is first-class when milling, first passes through mechanical resistance adjustment knob and changes resistance value, to change the voltage in voltage comparator
Fixed value, until the sense light becomes OFF state just from lighting lamp state, the voltage in voltage comparator is solid at this time
Definite value is equal with voltage fiducial value, i.e., the voltage fixed value be the card 5 initial voltage value；Then start to carry out milling, when
When the sense light becomes lighting lamp state from OFF state, as milling cutter 2 is contacted with the internal antenna of card 5, it was demonstrated that milling cutter 2 is
Milling finishes.By the setting of sense light, the state of sense light can be directly observed to determine the Initial Voltage Value of card 5, just
In the setting manually to voltage fixed value；Also staff can be allowed to recognize the process in milling process simultaneously, work as induction
It when lamp becomes lighting lamp state from OFF state, that is, represents milling cutter 2 and is contacted with antenna, milling depth at this time is the depth of antenna
Degree.
Referring to Fig. 1-Fig. 2, the depth detection apparatus of the double-interface smart card internal antenna of the present embodiment, including setting are being detected
Milling cutter mechanism, chucking mechanism, control module, signal emission module 1 and the signal receiving module 3 of station；Wherein, the milling cutter
Mechanism includes the vertical driving mechanism 4 that milling cutter 2 and driving milling cutter 2 move up and down；The setting of signal emission module 1 is detecting
The top of detection station is arranged in the lower section of station, the signal receiving module 3, and the signal emission module 1 issues detection letter
Number, it is transmitted in signal receiving module 3 after card 5 to be detected and chucking mechanism；The control module and milling cutter
Structure, signal emission module 1 and signal receiving module 3 are connected.
The signal receiving module 3 is equipped with the electromagnetic induction circuit mould that voltage signal is converted to for will test signal
Block.It will test signal by electromagnetic induction circuit module and be converted to voltage signal, convenient for control module to signal receiving module 3
On signal monitoring, be conducive to improve depth detection precision.
The control module is made of voltage comparator, wherein the first input end and signal of the voltage comparator receive
Module 3 connects, and the second input terminal is connect with mechanical resistance adjustment knob, the output end of voltage comparator and the control of milling cutter mechanism
Circuit connection processed.The output end of the voltage comparator is connected with sense light.
Further include for show signal receiving module 3 it is received receive signal display module, the display module and control
Molding block is connected.By the setting of display module, the specific value of voltage signal can intuitively be shown, convenient for artificial
Monitoring.
Referring to fig. 2, the milling cutter mechanism includes that there are two milling cutter 2, the milling cutters 2 and the core on card 5 of two milling cutter mechanisms
The two sides of piece position are corresponding；By the way that two such milling cutters 2 are arranged, so that milling out two detections in the two sides of chip position
Hole, so that the variation of detection signal is sensitiveer, is conducive to the depth detection essence for improving antenna compared to a detection hole is only milled
Degree.
Embodiment 2
The present embodiment difference from example 1 is that:
Referring to Fig. 5, the control module is made of processor, and the input terminal of the processor is connect with signal receiving module 3,
The connection of the control circuit of the other end and milling cutter mechanism；
After card 5 to be detected is transported to detection station, the processor is first to the initial letter on signal receiving module 3
It number is recorded；When the milling cutter 2 in milling cutter mechanism touches the internal antenna of the card 5, and the detection on signal receiving module 3
When signal mutates, the detection signal after mutation is calculated with initial signal and show that signal is dashed forward by the processor
Variation value, while the sign mutation difference being compared with setting value；If sign mutation difference is less than setting value, processor is not
Feedback signal is issued, milling cutter mechanism continues milling down, if sign mutation difference is greater than or equal to setting value, processor issues anti-
Feedback signal, milling cutter mechanism stop continuing milling down, registered depth.
This programme first records an initial signal by processor before carrying out milling to card 5, so that it is guaranteed that every to
The 3 received detection signal of institute of signal receiving module is accurately, to can be improved so just when the card 5 of detection is located at detection station
The precision of the residual quantity of detection signal after beginning signal and mutation, so that the comparison result of the residual quantity and setting value is improved, into
And improve the detection depth of 5 internal antenna of card；In addition, processor all can when carrying out depth detection or groove milling due to every card 5
An initial signal value is recorded, therefore even if the internal antenna technique of same batch card piece 5 has differences, is also able to carry out accurate depth
Degree detection and accurate groove milling, while also can adapt to the internal antenna depth detection of the card 5 of different batches；In addition, if processor
The initial signal recorded differs larger with the initial signal recorded with a batch of card 5, or with a batch of card 5
The initial signal Type-Inconsistencies recorded can then mark as the unqualified card 5 in batch card 5, have card line
Enclose detection function.
Above-mentioned is the preferable embodiment of the present invention, but embodiments of the present invention are not limited by the foregoing content,
His any changes, modifications, substitutions, combinations, simplifications done without departing from the spirit and principles of the present invention, should be
The substitute mode of effect, is included within the scope of the present invention.
Claims (10)
1. a kind of depth detection method of double-interface smart card internal antenna, which comprises the following steps:
(1) milling cutter mechanism carries out milling to the card to be detected for being located at detection station, and the signal below detection station is arranged in
Transmitting module continuously sends out detection signal, and the signal receiving module above detection station is arranged in and receives the detection signal, control
Molding block monitors the received detection signal of signal receiving module institute in real time；
(2) when the milling cutter in milling cutter mechanism touches the internal antenna of card, the internal antenna of milling cutter and card is linked together, so that
Electromagnetic resistivity moment between signal emission module and signal receiving module becomes larger, so that inspection received by signal receiving module
It surveys signal to be mutated, after the control module detects effective sign mutation, issues feedback signal to milling cutter mechanism, allow
Milling cutter mechanism stopping continues to decline, while registered depth.
2. the depth detection method of double-interface smart card internal antenna according to claim 1, which is characterized in that the signal
The detection signal that transmitting module issues is 13.56MHz electromagnetic wave signal, and the signal receiving module is equipped with electromagnetic induction electricity
Road；13.56MHz electromagnetic wave signal passes through arriving signal receiving module after the card to be detected in detection station, and passes through electromagnetism
Induction generates a voltage signal, and the control module monitors the voltage signal in real time.
3. the depth detection method of double-interface smart card internal antenna according to claim 1 or 2, which is characterized in that described
Control module is made of voltage comparator, wherein and the first input end of the voltage comparator is connect with signal receiving module, and second
Input terminal is connect with mechanical resistance adjustment knob, and the output end of voltage comparator and the control circuit of milling cutter mechanism connect；
Before carrying out milling, first pass through mechanical resistance adjustment knob manually set the second input terminal of voltage comparator voltage it is solid
Definite value；In milling cutter mechanism climb milling, detection signal received by signal receiving module is converted to voltage signal and real-time
Ground is input in voltage comparator, and the voltage signal constitutes the voltage fiducial value of voltage comparator；Milling cutter mechanism downwards into
When row milling, the voltage fiducial value is compared with voltage fixed value, when voltage fiducial value is more than or equal to voltage fixed value,
Voltage comparator output stops the control circuit of milling signal to milling cutter mechanism, and control milling cutter mechanism stopping continues to move down,
And record antenna depth；When voltage fiducial value is less than voltage fixed value, voltage comparator, which issues, continues milling signal to milling cutter
The control circuit of mechanism, milling cutter mechanism continue climb milling.
4. the depth detection method of double-interface smart card internal antenna according to claim 3, which is characterized in that in voltage ratio
Output end compared with device is connected with sense light, and it is to put out when voltage fixed value is less than or equal to voltage fiducial value that the sense light, which is arranged,
It goes out state, is lighting lamp state when voltage fixed value is greater than voltage fiducial value；When grade is first when milling in detection station for card
Change resistance value by mechanical resistance adjustment knob, to change the voltage fixed value in voltage comparator, until the sense
Until answering lamp to become OFF state just from lighting lamp state, the voltage fixed value in voltage comparator and voltage fiducial value phase at this time
Deng, i.e., the voltage fixed value be the card initial voltage value；Then start to carry out milling, when the sense light is from OFF state
When becoming lighting lamp state, as milling cutter is contacted with the internal antenna of card, it was demonstrated that milling finishes milling cutter.
5. the depth detection method of double-interface smart card internal antenna according to claim 1 or 2, which is characterized in that described
Control module is made of processor, and the input terminal of the processor is connect with signal receiving module, the control of the other end and milling cutter mechanism
Circuit connection processed；
After card to be detected is transported to detection station, the processor first carries out the initial signal on signal receiving module
Record；Detection signal when the milling cutter in milling cutter mechanism touches the internal antenna of the card, and on signal receiving module occurs
When mutation, the detection signal after mutation is calculated and is obtained sign mutation difference with initial signal by the processor,
The sign mutation difference is compared with setting value simultaneously；If sign mutation difference is less than setting value, processor is not issued instead
Feedback signal, milling cutter mechanism continue milling down, if sign mutation difference is greater than or equal to setting value, processor issues feedback letter
Number, milling cutter mechanism stops continuing milling down, registered depth.
6. a kind of double boundaries of the depth detection method suitable for the described in any item double-interface smart card internal antennas of claim 1-5
The depth detection apparatus of face smart card internal antenna, which is characterized in that milling cutter mechanism, mounting board machine including detection station is arranged in
Structure, control module, signal emission module and signal receiving module；Wherein, the milling cutter mechanism includes milling cutter and driving milling
The vertical driving mechanism that knife moves up and down；The lower section of detection station is arranged in the signal emission module, and the signal receives mould
The top of detection station is arranged in block, and the signal emission module issues detection signal, passes through card to be detected and mounting board
It is transmitted in signal receiving module after mechanism；The control module and milling cutter mechanism, signal emission module and signal receive mould
Block is connected.
7. the depth detection method of double-interface smart card internal antenna according to claim 6, which is characterized in that the signal
Receiving module is equipped with the electromagnetic induction circuit module that voltage signal is converted to for will test signal.
8. the depth detection method of double-interface smart card internal antenna according to claim 6 or 7, which is characterized in that described
Control module is made of voltage comparator, wherein and the first input end of the voltage comparator is connect with signal receiving module, and second
Input terminal is connect with mechanical resistance adjustment knob, and the output end of voltage comparator and the control circuit of milling cutter mechanism connect.
9. the depth detection method of double-interface smart card internal antenna according to claim 6 or 7, which is characterized in that described
Control module is made of processor, and the input terminal of the processor is connect with signal receiving module, the control of the other end and milling cutter mechanism
Circuit connection processed.
10. the depth detection method of double-interface smart card internal antenna according to claim 1, which is characterized in that further include
For show signal receiving module the received display module for receiving signal, which is connected with control module.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701993A (en) * | 2019-09-29 | 2020-01-17 | 广州佳昕机电科技有限公司 | Antenna buried depth detection device and detection method of smart card |
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| CN110701993B (en) * | 2019-09-29 | 2021-08-03 | 广州佳昕机电科技有限公司 | Antenna buried depth detection device and detection method of smart card |
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