CN104899623B - A kind of method, system and the equipment of control Non-contact Media Reader modulation depth - Google Patents
A kind of method, system and the equipment of control Non-contact Media Reader modulation depth Download PDFInfo
- Publication number
- CN104899623B CN104899623B CN201510284227.8A CN201510284227A CN104899623B CN 104899623 B CN104899623 B CN 104899623B CN 201510284227 A CN201510284227 A CN 201510284227A CN 104899623 B CN104899623 B CN 104899623B
- Authority
- CN
- China
- Prior art keywords
- card reader
- modulation depth
- driving pin
- impedance values
- card
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The present invention provides a kind of method, system and the equipment of control Non-contact Media Reader modulation depth, method bag：Non-contact card is preset to more than two detecting distances between card reader internal antenna；Obtain the reception pin voltage value and modulation depth of the card reader of correspondence detecting distance；Judge whether modulation depth meets standard；If it is not, the driving pin impedance values of card reader are then adjusted, until modulation depth meets standard；The driving pin impedance values of record correspondence detecting distance；Generation receives the contingency table between pin voltage value and driving pin impedance values；Detection obtains the reception pin voltage value of card reader；According to contingency table, the driving pin impedance values corresponding with the reception pin voltage value are obtained；Driving pin impedance values are updated to the driving pin of the card reader.Realize that the Type B modulation depths for automatically controlling card reader meet standard all the time.
Description
Technical field
The present invention relates to Non-contact Media Reader field, a kind of control Non-contact Media Reader modulation depth is particularly related to
Method, system and equipment.
Background technology
The Non-contact Media Reader of prior art uses 13.56MHz frequency standard, and the technology for near-field communication is led
Domain, the international mark for the non-contact IC card formulated according to International Organization for standardization (ISO) and International Electrotechnical Commission (IEC) (IEC)
It is accurate --- ISO/IEC14443, and the EMV Contactless Specifications for payment that EMVco is formulated
Systems payment standards are designed.Required in EMVco standards when IC-card is placed on 0cm-4cm in card-reading zone, it is non-to connect
The Type-B modulation depths of the radiofrequency signal of touch card reader transmitting need to be maintained between 9%-15%.
Referring to Fig. 1, a is carrier amplitude, b is modulation wave amplitude, and the modulation depth is：(a-b)/(a+b).In reality
In, it is assumed that card reader sends the sine wave carrier signal that a peak-to-peak value is 1V, contactless card receives and decodes the load
Ripple signal, the order for reading the carrier signal loading is 1；When card reader adds modulated signal in carrier signal, then
Card reader will send the carrier signal that a peak-to-peak value is 0.8V, and contactless card will be read by decoding the carrier signal
The order of loading is 0, represents that the carrier signal adds modulated signal；Calculate and obtain the modulation depth of above-mentioned card reader and be：
(1-0.8)/(1+0.8)=11%, meets regulation.Reading normally can be decoded and recognize in order to ensure the receiving circuit of non-contact card
The modulated signal that card device is sent, then need the modulation depth of card reader to set and meet specification, that is, pass through the peak-to-peak value of carrier signal
Calculating obtained modulation depth must remain in the range of 9%-15%, otherwise will have a strong impact on card reader and non-contact card
Between data transfer the degree of accuracy.
In order to meet above-mentioned standard, the Non-contact Media Reader of prior art is mainly using adjustment chip radio frequency driving pin
Output impedance realize the control of modulation depth, be specially：When outgoing carrier signal, the output impedance of radio-frequency driven pin
For Z1；When exporting modulation waveform, the output impedance of radio-frequency driven pin is Z2, and Z2>Z1.Using above-mentioned control method,
In the case that antenna impedance is constant, Type-B modulation depths can keep constant, but when IC-card is placed on different distance, IC
The influence blocked to antenna impedance is also different, causes IC-card in different distance, and modulation depth also can be different, it is difficult to make modulation depth
It is maintained between 9%-15%.At this moment to make modulation depth meet EMVco requirements, but it can only be adjusted by adjusting the resonance point of antenna
The resonance point of line but reduced the power output of antenna and received sensitive all day.
The patent document of Application No. 200580028508.1 discloses a kind of for testing contactless payment equipment
Standard apparatus, for verifying the reference card and reference reader of finished product card and Product readers to the compliance of product specification, i.e.,
Detection includes whether the external behaviors such as power, resonant frequency, modulation depth, noise meet standard criterion.Above-mentioned patent document is only
The detection to modulation depth is only realized, without regard to the control of modulation depth, antenna impedance situation of change still can not be solved
The modulation depth of lower control card reader is maintained in standard criterion.
Therefore, it is necessary to provide a kind of a kind of control Non-contact Media Reader modulation depth that can solve the problem that above mentioned problem
Method, system and equipment.
The content of the invention
The technical problems to be solved by the invention are：A kind of method of control Non-contact Media Reader modulation depth of offer,
System and equipment, it is ensured that when non-contact card is in certain reading range, the modulation depth of card reader meets standard criterion all the time.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of method for controlling Non-contact Media Reader modulation depth, including：
Non-contact card is preset to more than two detecting distances between card reader internal antenna；
According to the distance between detecting distance adjustment non-contact card and card reader；
Obtain the reception pin voltage value and modulation depth of the card reader of the correspondence detecting distance；
Judge whether the modulation depth meets standard；If it is not, then adjusting the driving pin output impedance of the card reader
Value, until the modulation depth meets standard；
The driving pin impedance values of record correspondence detecting distance；
The generation contingency table received between pin voltage value and the driving pin impedance values；
Detection obtains the reception pin voltage value of card reader；
According to the contingency table, the driving pin impedance values corresponding with the reception pin voltage value are obtained；
The driving pin impedance values are updated to the driving pin of the card reader.
Another technical scheme that the present invention is provided is：
A kind of system for controlling Non-contact Media Reader modulation depth, including：
Presetting module, for presetting non-contact card to more than two detecting distances between card reader internal antenna；
First acquisition module, the reception pin voltage value of the card reader for obtaining the correspondence detecting distance；
Second acquisition module, the modulation depth of the card reader for obtaining the correspondence detecting distance；
Judge module, for judging whether the modulation depth meets standard；
Adjusting module, the driving pin impedance values for adjusting the card reader, until the modulation depth meets
Standard；
Logging modle, the driving pin impedance values for recording correspondence detecting distance；
Generation module, for generating associating between the reception pin voltage value and the driving pin impedance values
Table；
Detection module, the reception pin voltage value of card reader is obtained for detecting；
3rd acquisition module, for according to the contingency table, obtaining the driving corresponding with the reception pin voltage value
Pin impedance values；
Update module, for updating the driving pin impedance values to the driving pin of the card reader.
The 3rd technical scheme that the present invention is provided be：
A kind of equipment for controlling Non-contact Media Reader modulation depth, including：PICC and Non-contact Media Reader；It is described non-
Contact card reader includes CPU, card reader chip and the antenna circuit being sequentially connected；
The card reader chip includes peak detection circuit, receives pin and driving pin；The antenna circuit includes hair
Send sub-circuit and receive sub-circuit；The peak detection circuit connects the reception pin, and the driving pin connects the day
The transmission sub-circuit of line circuit.
The beneficial effects of the present invention are：Reception pin voltage value and non-contact card to Card Reader of the present invention according to card reader
The associate feature of distance between device internal antenna, under the premise of ensuring that modulation depth is standard compliant, obtains the different default inspections of correspondence
Ranging from driving pin impedance values, and generate contingency table；When non-contact card is placed in Card Reader region, it can pass through
The reception pin voltage value of card reader is detected, the distance of non-contact card and card reader internal antenna is judged, and by reading the pass
Join table, obtain the driving pin impedance values corresponding with the reception pin voltage value detected, driving pin output is hindered
Anti- value is updated to the driving pin of card reader；Realize card reader Type-B modulation depths can not by non-contact card and antenna it
Between distance influence, standard is met all the time；Ensure the power output and receiving sensitivity of card reader internal antenna also not by upper simultaneously
State the influence of distance；The further Card Reader efficiency for improving Non-contact Media Reader, and the accurate non-contact card that reads are transmitted across
The card data come.
Brief description of the drawings
Fig. 1 is the schematic diagram of modulation depth described in Non-contact Media Reader；
Fig. 2 is a kind of FB(flow block) of the method for control Non-contact Media Reader modulation depth of the present invention；
Fig. 3 is a kind of structure composition block diagram of the system of control Non-contact Media Reader modulation depth of the present invention；
Fig. 4 is a kind of hardware connection diagram of the equipment of control Non-contact Media Reader modulation depth of the present invention；
Fig. 5 is generation pass in a kind of method of control Non-contact Media Reader modulation depth of the embodiment of the invention
Join the FB(flow block) of table；
Fig. 6 be the embodiment of the invention it is a kind of control Non-contact Media Reader modulation depth method in controlled
The FB(flow block) of journey.
Label declaration：
1st, presetting module；2nd, the first acquisition module；3rd, the second acquisition module；4th, judge module；
5th, adjusting module；6th, logging modle；7th, generation module；8th, detection module；
9th, the 3rd acquisition module；10th, update module.
Embodiment
To describe technology contents, the objects and the effects of the present invention in detail, below in conjunction with embodiment and coordinate attached
Figure is explained.
The design of most critical of the present invention is：Corresponding it can be connect according to the distance between non-contact card and card reader internal antenna
Spasm pin magnitude of voltage, in the case of ensuring that modulation depth is standard compliant, obtains the different drivings for receiving pin voltage value of correspondence
Pin impedance values contingency table；Driving pin impedance values are updated by tabling look-up, the modulation depth of control card reader is realized
All the time standard is met.
Explanation of technical terms of the present invention:
Fig. 2 is refer to, the present invention provides a kind of method for controlling Non-contact Media Reader modulation depth, including：
Non-contact card is preset to more than two detecting distances between card reader internal antenna；
According to the distance between detecting distance adjustment non-contact card and card reader；
Obtain the reception pin voltage value and modulation depth of the card reader of the correspondence detecting distance；
Judge whether the modulation depth meets standard；If it is not, then adjusting the driving pin output impedance of the card reader
Value, until the modulation depth meets standard；
The driving pin impedance values of record correspondence detecting distance；
The generation contingency table received between pin voltage value and the driving pin impedance values；
Detection obtains the reception pin voltage value of card reader；
According to the contingency table, the driving pin impedance values corresponding with the reception pin voltage value are obtained；
The driving pin impedance values are updated to the driving pin of the card reader.
The present invention operation principle be：Noncontact is judged by the reception pin voltage value for Non-contact Media Reader of sampling
Distance between card and card reader internal antenna；By adjusting the driving pin impedance values of card reader, make above-mentioned apart from different
In the case of, the Type-B modulation depths of card reader can keep being basically unchanged, and meet EMVco standard, and not influence card reader
The power output and receiving sensitivity of antenna.
It should be noted that judging non-contact card and reading by the reception pin voltage value for Non-contact Media Reader of sampling
The foundation of distance between card device internal antenna is：When non-contact card in card-reading zone diverse location, i.e. non-contact card and antenna spacing
From it is different when, influence of the non-contact card to antenna is different, and the influence will be embodied directly in the carrier signal voltage of antenna
In value, the carrier signal magnitude of voltage of antenna will change with the change of non-contact card and antenna distance；Therefore, just it can pass through
The carrier signal magnitude of voltage of antenna is measured to judge the distance between non-contact card and antenna.But the carrier signal voltage of antenna
Value is generally more than tens volts, it is difficult to samples, and is from day based on the reception pin voltage value on Non-contact Media Reader chip
On line obtained by partial pressure, that is, receive pin voltage value and there is relevance with aerial voltage, and voltage peak-to-peak value is not over card reader
The operating voltage of chip, can very easily sample and obtain, therefore, the reception pin voltage that need to only sample in card reader chip
Value, just can realize the judgement of non-contact card and antenna distance.
It was found from foregoing description, the beneficial effects of the present invention are：In the real work of Non-contact Media Reader, only need
Measurement obtains the reception pin voltage value of card reader；By consulting the contingency table, obtain and the reception pin voltage value phase
Corresponding driving pin impedance values, and the driving pin impedance values are updated to the driving pin of card reader, just
It can guarantee that under the current distance at non-contact card Yu card reader internal antenna interval, the Type-B modulation depths of card reader are kept substantially
It is constant, that is, meet standard criterion.
Further, described " the driving pin impedance values of the adjustment card reader " are specially：
The value of modulation depth register is set by the CPU of the card reader, and then adjusts the driving pin output resistance
Anti- value.
Seen from the above description, the adjustment based on the driving pin impedance values directly can pass through card reader
CPU controls the modulation depth register of card reader chip to realize, has accomplished to drive the automation adjustment of pin impedance values,
The step of artificial intervention in control process regulates and controls is eliminated, the degree of accuracy of generated contingency table is improved.
It is preferred that, in the step of updating the driving pin impedance values, it again may be by the CPU controls tune
The value of depth register processed come realize it is described driving pin impedance values renewal.
Further, the reception pin voltage value for obtaining the card reader is detected by peak detection circuit.
Seen from the above description, directly the reception can be obtained by the peak detection circuit detection inside card reader to draw
Pin magnitude of voltage, makes full use of the circuit resource of card reader itself, realizes the simplification of circuit design.
Further, the non-contact card is the PICC being connected with test equipment.
Seen from the above description, non-contact card is simulated using PICC, can be direct by the test equipment being connected with PICC
Getting the modulation waveform that PICC receives includes the electrical specifications of modulation depth, realizes that the automation of the modulation depth is obtained
Take, while ensuring the degree of accuracy of modulation depth got.
Further, the span of the detecting distance is 0-5cm.
Seen from the above description, the span of the detecting distance is existed according to Non-contact Media Reader and non-contact card
Experience range data in practical work process summarizes what is drawn, more conforms to the situation of real work, it is ensured that acquired pass
Connection table disclosure satisfy that actual demand.
Referring to Fig. 3, second technical scheme that the present invention is provided is：
A kind of system for controlling Non-contact Media Reader modulation depth, including：
Presetting module, for presetting non-contact card to more than two detecting distances between card reader internal antenna；
First acquisition module 2, the reception pin voltage value of the card reader for obtaining the correspondence detecting distance；
Second acquisition module 3, the modulation depth of the card reader for obtaining the correspondence detecting distance；
Judge module 4, for judging whether the modulation depth meets standard；
Adjusting module 5, the driving pin impedance values for adjusting the card reader, until the modulation depth meets
Standard；
Logging modle 6, the driving pin impedance values for recording correspondence detecting distance；
Generation module 7, for generating the pass between the reception pin voltage value and the driving pin impedance values
Join table；
Detection module 8, the reception pin voltage value of card reader is obtained for detecting；
3rd acquisition module 9, for according to the contingency table, obtaining the driving corresponding with the reception pin voltage value
Pin impedance values；
Update module 10, for updating the driving pin impedance values to the driving pin of the card reader.
Referring to Fig. 4, the 3rd technical scheme that the present invention is provided is：
A kind of equipment for controlling Non-contact Media Reader modulation depth, including：PICC and Non-contact Media Reader；It is described non-
Contact card reader includes CPU, card reader chip and the antenna circuit being sequentially connected；
The card reader chip includes modulation depth register, peak detection circuit, receives pin and driving pin；It is described
Antenna circuit includes sending sub-circuit and receives sub-circuit；
The modulation depth register connects the CPU and the driving pin, the peak detection circuit connection respectively
The reception pin, the driving pin connects the transmission sub-circuit of the antenna circuit.
From the foregoing, the said equipment has the beneficial effect that：The reception pin is obtained by peak detection circuit detection
Magnitude of voltage；Modulation depth is obtained by PICC detections；The value of the modulation depth register of card reader chip is controlled by CPU, is entered
And adjust driving pin voltage value；Realize under the premise of ensuring that modulation depth is standard compliant, obtain the different default detections of correspondence
The driving pin impedance values of distance, and generate contingency table；Control for the modulation depth of subsequent non-contact formula card reader is carried
For basis.
Further, it is described to send wave filter, impedance matching circuit and aerial coil that sub-circuit includes being sequentially connected；Institute
Aerial coil is stated also to be connected with the reception sub-circuit.
Fig. 4 is refer to, embodiments of the invention one are：
A kind of equipment for controlling Non-contact Media Reader Type-B card modulation depths, including PICC and contactless Card Reader
Device；The PICC is connected with professional test equipment；
The Non-contact Media Reader includes CPU, card reader chip and the antenna circuit being sequentially connected；
The card reader chip includes modulation depth register, peak detection circuit, receives pin and driving pin；
The antenna circuit includes sending sub-circuit and receives sub-circuit；It is described to send the filter that sub-circuit includes being sequentially connected
Ripple device, impedance matching circuit and aerial coil；
The modulation depth register connects the CPU and the driving pin, the peak detection circuit connection respectively
TX1 interfaces and TX2 interfaces in the reception pin, the driving pin connect the transmission sub-circuit of the antenna circuit；Institute
Aerial coil is stated also to be connected with the reception sub-circuit.
The impedance value of TX1 interfaces and the impedance value of TX2 interfaces according to driving pin can determine the driving pin
Impedance values；The peak detection circuit carried using the card reader chip, which can be detected, obtains the voltage for receiving pin
Value；Using the professional test equipment being connected with PICC, distance between acquisition correspondence card reader internal antenna and non-contact card can be detected
Modulation depth；By CPU adjust modulation depth register value, can with so that adjust driving pin impedance values.
Fig. 2, Fig. 5 and Fig. 6 are refer to, on the basis of embodiments of the invention one, embodiments of the invention two are：
A kind of method for controlling Non-contact Media Reader Type-B card modulation depths is provided,
S1：Default non-contact card to distance between card reader internal antenna is respectively 0cm, 1cm, 2cm, 3cm, 4cm and 5cm
Detecting distance；
S2：It is 0cm to adjust the distance between PICC and card reader internal antenna；Current detection is obtained to receive apart from lower card reader
Pin voltage value U0, percentage regulation is D0；The D0 is judged whether in 9%-15%, if it is not, then deep by CPU adjustment modulation
The value of register is spent, until D0 meets standard, the value modB0 of current modulation depth register is recorded；
S3：It is 1cm to adjust the distance between PICC and card reader internal antenna；Current detection is obtained to receive apart from lower card reader
Pin voltage value U1, percentage regulation is D1；The D1 is judged whether in 9%-15%, if it is not, then deep by CPU adjustment modulation
The value of register is spent, until D1 meets standard, the value modB1 of current modulation depth register is recorded；
S4：It is 2cm to adjust the distance between PICC and card reader internal antenna；Current detection is obtained to receive apart from lower card reader
Pin voltage value U2, percentage regulation is D2；The D2 is judged whether in 9%-15%, if it is not, then deep by CPU adjustment modulation
The value of register is spent, until D2 meets standard, the value modB2 of current modulation depth register is recorded；
S5：It is 3cm to adjust the distance between PICC and card reader internal antenna；Current detection is obtained to receive apart from lower card reader
Pin voltage value U3, percentage regulation is D3；The D3 is judged whether in 9%-15%, if it is not, then deep by CPU adjustment modulation
The value of register is spent, until D3 meets standard, the value modB3 of current modulation depth register is recorded；
S6：It is 4cm to adjust the distance between PICC and card reader internal antenna；Current detection is obtained to receive apart from lower card reader
Pin voltage value U4, percentage regulation is D4；The D4 is judged whether in 9%-15%, if it is not, then deep by CPU adjustment modulation
The value of register is spent, until D4 meets standard, the value modB4 of current modulation depth register is recorded；
S7：It is 5cm to adjust the distance between PICC and card reader internal antenna；Current detection is obtained to receive apart from lower card reader
Pin voltage value U5, percentage regulation is D5；The D5 is judged whether in 9%-15%, if it is not, then deep by CPU adjustment modulation
The value of register is spent, until D5 meets standard, the value modB5 of current modulation depth register is recorded；
S8：Generated according to the above-mentioned data got between the pin voltage value and the value of the modulation depth register
Contingency table 1；Table 1 is as follows：
| PICC and card reader apart from d | Receive pin voltage value | The value of modulation depth register |
| 0cm | U0 | modB0 |
| 1cm | U1 | modB1 |
| 2cm | U2 | modB2 |
| 3cm | U3 | modB3 |
| 4cm | U4 | modB4 |
| 5cm | U5 | modB5 |
Table 1
S9：In the Non-contact Media Reader course of work, card reader is opened after carrier wave, you can is constantly sent TypeB cards and is sought
Card command and read-write non-contact card；Before card reader sends data, detection obtains the reception pin voltage value U3 of card reader；It is excellent
Choosing is all detected before sending data every time；
S10：According to the reception pin voltage value U3, consult table 1 obtains corresponding with the reception pin voltage value U3
Modulation depth register value modB3；
S11：It is modB3 by the CPU of the card reader values for updating modulation depth register, to ensure in non-contact card with reading
In the case of card device internal antenna interval 3cm, the Type-B card modulation depths of card reader meet standard.
In summary, method, system and the equipment for a kind of control Non-contact Media Reader modulation depth that the present invention is provided,
Need to ensure that modulation depth meets standard by adjusting the resonance point of antenna for prior art, cause the power output of antenna
The shortcoming declined with receiving sensitivity；In the case of ensuring that modulation depth is standard compliant, the different reception pin electricity of correspondence are obtained
The driving pin impedance values contingency table of pressure value；Driving pin impedance values are updated by tabling look-up；Not only realize Card Reader
The Type-B modulation depths of device can not be influenceed by distance between non-contact card and antenna, and standard is met all the time；Nor
Influence the power output and receiving sensitivity of antenna；Further, automatic test is realized to obtain reception pin voltage value, adjust
Depth processed and driving pin impedance values, it is ensured that the accuracy of fetched data, and it is used as the contingency table for controlling foundation
Accuracy；Finally, additionally it is possible to make full use of the circuit inside card reader to obtain required data, realize the simplification of circuit design.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalents that bright specification and accompanying drawing content are made, or the technical field of correlation is directly or indirectly used in, similarly include
In the scope of patent protection of the present invention.
Claims (8)
1. a kind of method for controlling Non-contact Media Reader modulation depth, it is characterised in that including：
Non-contact card is preset to more than two detecting distances between card reader internal antenna；
According to the distance between detecting distance adjustment non-contact card and card reader；
Obtain the reception pin voltage value and modulation depth of the card reader of the correspondence detecting distance；
Judge whether the modulation depth meets standard；If it is not, then adjusting the driving pin impedance values of the card reader, directly
Meet standard to the modulation depth；
The driving pin impedance values of record correspondence detecting distance；
The generation contingency table received between pin voltage value and the driving pin impedance values；
Detection obtains the reception pin voltage value of card reader；
According to the contingency table, the driving pin impedance values corresponding with the reception pin voltage value are obtained；
The driving pin impedance values are updated to the driving pin of the card reader.
2. a kind of method for controlling Non-contact Media Reader modulation depth as claimed in claim 1, it is characterised in that described
" the driving pin impedance values of the adjustment card reader " are specially：
The value of modulation depth register is set by the CPU of the card reader, and then adjusts the driving pin impedance values.
3. a kind of method for controlling Non-contact Media Reader modulation depth as claimed in claim 1, it is characterised in that pass through peak
Value detection electric circuit inspection obtains the reception pin voltage value of the card reader.
4. a kind of method for controlling Non-contact Media Reader modulation depth as claimed in claim 1, it is characterised in that described non-
Contact card is the PICC being connected with test equipment.
5. a kind of method for controlling Non-contact Media Reader modulation depth as claimed in claim 1, it is characterised in that the inspection
Ranging from span be 0-4cm.
6. a kind of system for controlling Non-contact Media Reader modulation depth, it is characterised in that including：
Presetting module, for presetting non-contact card to more than two detecting distances between card reader internal antenna；
First acquisition module, the reception pin voltage value of the card reader for obtaining the correspondence detecting distance；
Second acquisition module, the modulation depth of the card reader for obtaining the correspondence detecting distance；
Judge module, for judging whether the modulation depth meets standard；
Adjusting module, the driving pin impedance values for adjusting the card reader, until the modulation depth meets standard；
Logging modle, the driving pin impedance values for recording correspondence detecting distance；
Generation module, for generating the contingency table between the reception pin voltage value and the driving pin impedance values；
Detection module, the reception pin voltage value of card reader is obtained for detecting；
3rd acquisition module, for according to the contingency table, obtaining the driving pin corresponding with the reception pin voltage value
Impedance values；
Update module, for updating the driving pin impedance values to the driving pin of the card reader.
Read 7. a kind of control of the method for the control Non-contact Media Reader modulation depth based on described in claim 1 is contactless
The equipment of card device modulation depth, it is characterised in that including：PICC and Non-contact Media Reader；The Non-contact Media Reader bag
Include the CPU being sequentially connected, card reader chip and antenna circuit；
The card reader chip includes modulation depth register, peak detection circuit, receives pin and driving pin；The antenna
Circuit includes sending sub-circuit and receives sub-circuit；
The modulation depth register connects the CPU and the driving pin respectively, and the peak detection circuit connection is described
Pin is received, the driving pin connects the transmission sub-circuit of the antenna circuit.
8. a kind of equipment for controlling Non-contact Media Reader modulation depth as claimed in claim 7, it is characterised in that the hair
Sub-circuit is sent to include wave filter, impedance matching circuit and the aerial coil being sequentially connected；The aerial coil is also received with described
Sub-circuit is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510284227.8A CN104899623B (en) | 2015-05-29 | 2015-05-29 | A kind of method, system and the equipment of control Non-contact Media Reader modulation depth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510284227.8A CN104899623B (en) | 2015-05-29 | 2015-05-29 | A kind of method, system and the equipment of control Non-contact Media Reader modulation depth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104899623A CN104899623A (en) | 2015-09-09 |
| CN104899623B true CN104899623B (en) | 2017-09-29 |
Family
ID=54032277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510284227.8A Active CN104899623B (en) | 2015-05-29 | 2015-05-29 | A kind of method, system and the equipment of control Non-contact Media Reader modulation depth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104899623B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108446576B (en) * | 2018-01-17 | 2021-02-05 | 艾体威尔电子技术(北京)有限公司 | Terminal modulation depth self-adaption method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1828628A (en) * | 2005-03-01 | 2006-09-06 | 北京清华同方微电子有限公司 | Modulation circuit for non-contact IC card reading apparatus |
| CN2852263Y (en) * | 2005-12-29 | 2006-12-27 | 张其善 | Full-digital control circuit for modulation depth |
| CN102708338A (en) * | 2011-02-28 | 2012-10-03 | 卡西欧计算机株式会社 | Communication apparatus and computer program product |
| CN102842019A (en) * | 2012-07-24 | 2012-12-26 | 北京泛在电子标签技术有限公司 | Radio frequency label and method for improving RFID (Radio Frequency Identification Devices) reader carrier modulation depth |
| CN104298152A (en) * | 2014-09-29 | 2015-01-21 | 飞天诚信科技股份有限公司 | Near-field communication modulation depth adaptive method and device |
| CN104463311A (en) * | 2014-08-27 | 2015-03-25 | 北京中电华大电子设计有限责任公司 | Circuit for improving contactless card strong field modulation waveform and modulation length |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201112126A (en) * | 2009-09-18 | 2011-04-01 | Univ Nat Taiwan Science Tech | Radio frequency identification tag |
-
2015
- 2015-05-29 CN CN201510284227.8A patent/CN104899623B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1828628A (en) * | 2005-03-01 | 2006-09-06 | 北京清华同方微电子有限公司 | Modulation circuit for non-contact IC card reading apparatus |
| CN2852263Y (en) * | 2005-12-29 | 2006-12-27 | 张其善 | Full-digital control circuit for modulation depth |
| CN102708338A (en) * | 2011-02-28 | 2012-10-03 | 卡西欧计算机株式会社 | Communication apparatus and computer program product |
| CN102842019A (en) * | 2012-07-24 | 2012-12-26 | 北京泛在电子标签技术有限公司 | Radio frequency label and method for improving RFID (Radio Frequency Identification Devices) reader carrier modulation depth |
| CN104463311A (en) * | 2014-08-27 | 2015-03-25 | 北京中电华大电子设计有限责任公司 | Circuit for improving contactless card strong field modulation waveform and modulation length |
| CN104298152A (en) * | 2014-09-29 | 2015-01-21 | 飞天诚信科技股份有限公司 | Near-field communication modulation depth adaptive method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104899623A (en) | 2015-09-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20060022045A1 (en) | Payment card signal characterization methods and circuits | |
| US8963689B2 (en) | Cable ID using RFID devices | |
| Ravi et al. | RFID based security system | |
| US8442796B2 (en) | Method and system for simulating a proximity-based transaction device | |
| CN101751544A (en) | Device for reading data from a transponder module | |
| WO2009006633A1 (en) | Method and system for simulating a proximity-based transaction device | |
| CN201527655U (en) | Non-contact IC card double-frequency card reading device with mobile phone card swiping distance detecting function | |
| CN109064629A (en) | Self-service counter, self-service system and kinds of goods checking method | |
| CN104050561A (en) | Financial payment system based on RFID | |
| CN104899623B (en) | A kind of method, system and the equipment of control Non-contact Media Reader modulation depth | |
| CN106908709A (en) | The system and method for electromagnetic distu during detection intelligent card non-contact communication | |
| CN103033683A (en) | Passive radio frequency identification devices (RFID) electronic tag resonant frequency detection system based on Chirp signal and passive RFID electronic tag resonant frequency detection method based on the Chirp signal | |
| CN101615307A (en) | RFID access control system based on the PIC single-chip microcomputer | |
| CN100514350C (en) | Detecting method used for the second generation resident identification card and equipment thereof | |
| CN205354068U (en) | National treasury management system | |
| CN205486179U (en) | Terminal is handed to hyperfrequency fingerprint | |
| CN101911093A (en) | Evaluating an electromagnetic field strength of an electromagnetic gate apparatus | |
| CN106992898A (en) | A kind of contactless smart card Inlay downloads test device and its method of testing | |
| CN219105496U (en) | System integration equipment based on non-contact IC card | |
| CN104036211B (en) | One kind is based on RFID movement authentication scope monitoring systems and method | |
| KR200399644Y1 (en) | Complex RF reader practicable RF card of heterogeneity with different frequency band | |
| CN201315067Y (en) | NFC(near field communication) reader/writer device with non-driven USB interface | |
| CN200956166Y (en) | Detecting device for the second generation resident identification card | |
| SRAIRI et al. | RFID based vehicle-infrastructure communication system for road maintenance | |
| CN106339646A (en) | Non-contact RFID reader and writer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |