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CN106407860B - Anti-collision method and device for multi-card identification - Google Patents

Anti-collision method and device for multi-card identification Download PDF

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Publication number
CN106407860B
CN106407860B CN201610780765.0A CN201610780765A CN106407860B CN 106407860 B CN106407860 B CN 106407860B CN 201610780765 A CN201610780765 A CN 201610780765A CN 106407860 B CN106407860 B CN 106407860B
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radio frequency
card
frequency card
radio
digital
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CN106407860A (en
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杨敬锋
杨骥
张南峰
李勇
杨峰
周捍东
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Guangdong Zhongke Zhenheng Information Technology Co Ltd
Haihua Electronics Enterprise (china) Co Ltd
Yang Jingfeng
Guangzhou Institute of Geography of GDAS
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Guangdong Zhongke Zhenheng Information Technology Co Ltd
HAIHUA ELECTRONICS ENTERPRISE (CHINA) Corp
Guangzhou Institute of Geography of GDAS
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10019—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers.
    • G06K7/10029—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers. the collision being resolved in the time domain, e.g. using binary tree search or RFID responses allocated to a random time slot

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention relates to electronic communication technology fields, the in particular to anti-collision method of multi-card recognition.By reading and recording the digit information of each radio-frequency card number mark, the corresponding radio-frequency card of digit information with uniqueness is written and read, the radio-frequency card being applicable under current scene can be quickly found out by simply screening.If the corresponding radio-frequency card of all digit information with uniqueness does not comply with the mission requirements of reader sending, then screening and sequencing can be carried out to radio-frequency card according to the number mark and its digit information of each radio-frequency card, the radio-frequency card of ranking first after each screening is written and read, thus the skip for effectively avoiding reader from may cause when receiving multiple radio frequency card signals, situations such as can not identifying.For the anti-collision method of multi-card recognition, it can be combined into functional module construction, implemented by storing computer program in a computer-readable storage medium by establishing functional module.

Description

The anti-collision method and device of multi-card recognition
Technical field
The present invention relates to electronic communication technology fields, the in particular to anti-collision method of multi-card recognition.For multi-card recognition Anti-collision method, functional module construction can be combined into, by being stored in computer-readable storage medium by establishing functional module Computer program in matter is implemented.
Background technique
Radio-frequency card is also known as non-contact IC card, uses radio frequency identification (RFID) technology, can pass through radio signals Identification specific objective simultaneously reads and writes related data, without establishing mechanical or optical contact between identifying system and specific objective.It penetrates Frequently card has many advantages, such as easy to carry, swift to operate, is widely used in the industries such as electric power, traffic, bank, heating power.User is in spy Communication task is completed using corresponding radio-frequency card under fixed scene, but in practical application scene, due to the opening in space, Under unified scene there may be it is multiple can be with the radio-frequency card of reader communication.When such as taking public transport, user is for the side of figure Just, wrapping close to the POS, POS reading is allowed to be placed on bus card in packet, but access card, the certificate card etc. in user's packet are penetrated Frequency card can also respond the POS.Therefore, it after the signal of POS sending Charging Role, will receive from multiple radio-frequency cards Answer signal, there is overlapping in time-domain in the transmission of multiple signals, between the answer signal from different radio frequency card there is also It interferes with each other, may cause and occur situations such as skip, can not identify in the transmission process of reading and writing data, thus the POS can not It is normal to read public transport card information, so that card reading fails.
Summary of the invention
A kind of erosion control of multi-card recognition is provided it is an object of the invention to avoid above-mentioned shortcoming in the prior art Burst method, to avoid reader simultaneously receive multiple radio frequency card signals when be likely to occur skip, can not identify situations such as.
The purpose of the present invention is achieved through the following technical solutions:
The anti-collision method of multi-card recognition is provided, radio-frequency card obtains the task signal that reader issues, and returns to answer signal To reader, reader is written and read the radio-frequency card for issuing the answer signal if recognizing unique answer signal, Identify that the task signal issued to reader carries out the numerical identification information of at least two radio-frequency cards of response respectively, to recognizing Numerical identification information be ranked up, behaviour is written and read to radio-frequency card corresponding with numerical identification information according to the sequence of the sequence Make, does not allow the radio-frequency card to carry out response to the signal of the subsequent sending of the reader if reading and writing failure.
Preferably, the described pair of numerical identification information recognized, which is ranked up, refers to: according in the numerical identification information The size of number mark digit N be ranked up, the number mark for being 1 with the corresponding radio-frequency card quantity of number mark digit N is believed The sequence of breath prior to be not with the corresponding radio-frequency card quantity of number mark digit N 1 numerical identification information.
Preferably, screening row is carried out to the numerical identification information that the corresponding radio-frequency card quantity of digital marker number N is not 1 Sequence filters out the smallest numerical identification information of value of number mark every time.
Preferably, the screening and sequencing specifically, remembers that the minimum value of number mark digit N in each radio-frequency card is n；It reads Device issues the signal of reference value X, X >=10n, taking reduction ratio is A, 0 < A < 1, if the radio-frequency card that number mark digit is n The value of number mark is less than according to reduction ratio A reference value Xi adjusted, then the radio-frequency card answers the signal of reference value X It answers；Reference value X is adjusted so as to reference value X carry out response radio-frequency card quantity be 1, behaviour is written and read to the radio-frequency card Make.
Preferably, the number mark of the radio-frequency card is the number of the radio-frequency card.
For the anti-collision method of multi-card recognition, it can be combined into functional module construction, by depositing by establishing functional module Computer program in a computer-readable storage medium is stored up to implement.
Beneficial effects of the present invention: the digit information by reading and recording each radio-frequency card number mark, if corresponding Radio-frequency card quantity is that 1 digit information has uniqueness, is sticked into the corresponding radio frequency of these digit information with uniqueness Row read-write operation does not allow the radio-frequency card to carry out response to the signal of the subsequent sending of the reader if reading and writing failure.Because every A digit information with uniqueness only corresponds to a radio-frequency card, is fitted by simply screening to be quickly found out under current scene Radio-frequency card excludes not applicable radio-frequency card.If judging, digit information all radio-frequency cards with uniqueness are all read and write Failure does not meet the mission requirements of reader sending, then can be sticked into according to the numerical identification information of each radio-frequency card to radio frequency Row screening and sequencing is written and read the radio-frequency card of ranking first after each screening.According to radio-frequency card number mark and its Digit information carries out screening and sequencing to the reading order of radio-frequency card, it is possible to prevente effectively from reader receives multiple radio frequency card signals When the skip that may cause, situations such as can not identifying.
Specific embodiment
The invention will be further described with the following Examples.
Passenger carries out swiping card on the POS of bus, at this time range of signal of the wallet of passenger in the POS Interior, Bao Liyou 8 opens radio-frequency card and carries out response to POS sending Charging Role signal.The POS is according to this 8 radio-frequency cards The size of number mark digit N is ranked up, and is carried out according to the sequence of the sequence to radio-frequency card corresponding with numerical identification information Read-write operation refuses the signal that the radio-frequency card again issues the reader if a RF Signal failure and carries out response, and Next radio-frequency card is written and read, until reading and writing successfully, that is, completes the task that reader issues.
The number mark and its digit information for reading and recording each radio-frequency card for responding operation, determine therefrom that penetrating The read-write sequence of frequency card, thus accelerate speed of swiping the card, card reading abnormal conditions caused by avoiding Yin Duoka from conflicting.
The POS identifies the number mark of this 8 radio-frequency cards, i.e. radio-frequency card is numbered.The POS reads each penetrating of recognizing The digit information of frequency card number, and the corresponding radio-frequency card quantity of each digit information is recorded, obtaining the radio-frequency card that number is 6 digits has 1, be radio-frequency card C1；Number is that the radio-frequency card of 10 digits has 2, is radio-frequency card C2, C3；Number is that the radio-frequency card of 15 digits has 3, be radio-frequency card C4, C5, C6；Number is that the radio-frequency card of 18 digits has 1, is radio-frequency card C7；Number is the radio frequency of 19 digits Card has 1, is radio-frequency card C8.The number of radio-frequency card is stored in non-encrypted region, and the POS can be rapidly completed to number information Identification.
Number is that the radio-frequency card of 6,18,19 digits all only has 1, the POS according to number digit sequence from small to large according to It is secondary that these radio-frequency cards are written and read.The POS is written and read the radio-frequency card C1 that number is 6 digits, if the POS It is the read-write failure of the radio-frequency card C1 of 6 digits to number, then the POS no longer receives the response of radio-frequency card C1, is then to number The radio-frequency card C7 of 18 digits is written and read.If the POS is the read-write failure of the radio-frequency card C7 of 18 digits to number, brush Card machine no longer receives the response of radio-frequency card C7, is then written and read to the radio-frequency card C8 that number is 19 digits.Because different The coding rule of radio-frequency card often has differences, and digit also has specific setting rule, the different radio frequency cartoon of number digit Normal application scenarios are also different.Therefore by simply screening can be quickly found out under current scene be applicable in radio-frequency card or Exclude not applicable radio-frequency card.
Radio-frequency card C1, C7, C8 fail to complete Charging Role, and no longer carry out to the Charging Role signal that the POS issues Response.Screening and sequencing is carried out to remaining 5 cards according to the number information of each radio-frequency card, to ranking first after each screening Radio-frequency card is written and read.The number of radio-frequency card C2 is 1650552449, and the number of radio-frequency card C3 is 6049829363, radio frequency The number for blocking C4 is 401275695008501, and the number of radio-frequency card C5 is 875226338042576, and the number of radio-frequency card C6 is 302789011447791.The number digit of this 5 cards has 10 and 15 two kind of situation, and digit minimum value n is 10, takes reference value X= 1010, reduction ratio A=0.5 is taken, reference value X is adjusted to according to reduction ratio A by X1=A*X=5000000000, then is only penetrated The number of frequency card C2 is less than reference value X1 adjusted, is written and read to radio-frequency card C2.
The POS fails to the read-write of radio-frequency card C2, and number digit only has radio-frequency card C3 for 10 radio-frequency card at this time, to penetrating Frequency card C3 is written and read.
The POS fails to the read-write of radio-frequency card C3, and radio-frequency card number digit minimum value n is 15 at this time, takes reference value X2= 1015, take reduction ratio A=0.5.Reference value X2 is adjusted to X3=A*X2=50000000000000 according to reduction ratio A, is had The number of radio-frequency card C4, C6 are less than reference value adjusted；Being adjusted the reference value after being adjusted to reference value X is X4= A*X3=25000000000000, the number of radio-frequency card is not less than reference value adjusted, then according to reduction ratio A reference Value X4 is adjusted to X5=A* (X4-X3)+X4=37500000000000, then only the number of radio-frequency card C6 is less than ginseng adjusted Value X5 is examined, success is written and read to radio-frequency card C6, then radio-frequency card C6 is communicated with the POS, completes Charging Role.
Screening and sequencing is carried out to radio-frequency card according to the numerical identification information of each radio-frequency card, to ranking first after each screening Radio-frequency card be written and read.The reading order of radio-frequency card is sieved according to the number mark and its digit information of radio-frequency card Gather sequence, it is possible to prevente effectively from situations such as reader receives the skip that may cause when multiple radio frequency card signals, can not identify.
In this way, the reference value that the POS issues is adjusted according to reduction ratio A, so as to carry out the radio frequency of response to reference value X Card quantity is 1, so that the reading order to radio-frequency card carries out screening and sequencing.The radio-frequency card of ranking first after each screening is carried out Read-write operation avoids situations such as reader receives the skip that may cause when multiple radio frequency card signals, can not identify.
For the anti-collision method of multi-card recognition, it can be combined into functional module construction, by depositing by establishing functional module Computer program in a computer-readable storage medium is stored up to implement.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention Matter and range.

Claims (8)

1.多卡识别的防冲突方法，射频卡获取阅读器发出的任务信号，返回应答信号给阅读器，阅读器若识别到唯一的应答信号则对发出该应答信号的射频卡进行读写操作，其特征在于，分别识别对阅读器发出的任务信号进行应答的至少两个射频卡的数字标识信息，对识别到的数字标识信息进行排序，依所述排序的顺序对与数字标识信息对应的射频卡进行读写操作，若读写失败则不允许该射频卡对该阅读器后续发出的信号进行应答，所述对识别到的数字标识信息进行排序是指：根据所述数字标识信息中的数字标识位数N的大小进行排序，与数字标识位数N对应的射频卡数量为1的数字标识信息的排序先于与数字标识位数N对应的射频卡数量不为1的数字标识信息。1. The anti-collision method of multi-card identification, the radio frequency card obtains the task signal sent by the reader, and returns a response signal to the reader. If the reader recognizes a unique response signal, it will read and write the radio frequency card that issued the response signal. It is characterized in that the digital identification information of at least two radio frequency cards that respond to the task signal sent by the reader is respectively identified, the identified digital identification information is sorted, and the radio frequency corresponding to the digital identification information is sorted according to the sorting order. The card performs read and write operations. If the read and write fails, the radio frequency card is not allowed to respond to the subsequent signals sent by the reader. The sorting of the identified digital identification information refers to: according to the numbers in the digital identification information The number of identification digits N is sorted, and the digital identification information of the number of radio frequency cards corresponding to the number of digital identification digits N is 1 prior to the digital identification information of the number of radio frequency cards corresponding to the number of digital identification digits N is not 1. 2.根据权利要求1所述的多卡识别的防冲突方法，其特征在于，对数字标识位数N对应的射频卡数量不为1的数字标识信息进行筛选排序，每次筛选出数字标识的值最小的数字标识信息。2. The anti-collision method of multi-card identification according to claim 1 is characterized in that, the digital identification information whose number of radio frequency cards corresponding to the digital identification number N is not 1 is screened and sorted, and the number of digital identifications is screened out every time. The numerical identification information with the smallest value. 3.根据权利要求2所述的多卡识别的防冲突方法，其特征在于，所述筛选排序具体地，记各个射频卡中数字标识位数N的最小值为n；阅读器发出参考值X的信号，X≥10n，取缩减比例为A，0＜A＜1，若数字标识位数为n的射频卡的数字标识的值小于根据缩减比例A调整后的参考值Xi，则该射频卡对参考值X的信号进行应答；对参考值X进行调整以使对参考值X进行应答的射频卡数量为1，对该射频卡进行读写操作。3. The anti-collision method of multi-card identification according to claim 2, characterized in that, in the screening and sorting, specifically, the minimum value of the number of digits N of digital identification in each radio frequency card is recorded as n; the reader sends out a reference value X signal, X≥10 n , take the reduction ratio as A, 0<A<1, if the value of the digital ID of the RF card with n digital ID digits is less than the reference value Xi adjusted according to the reduction ratio A, the RF The card responds to the signal of the reference value X; the reference value X is adjusted so that the number of radio frequency cards responding to the reference value X is 1, and the radio frequency card is read and written. 4.根据权利要求1所述的多卡识别的防冲突方法，其特征在于，所述射频卡的数字标识是该射频卡的编号。4 . The anti-collision method for multi-card identification according to claim 1 , wherein the digital identification of the radio frequency card is the serial number of the radio frequency card. 5 . 5.多卡识别的防冲突装置，射频卡获取阅读器发出的任务信号，返回应答信号给阅读器，阅读器若识别到唯一的应答信号则对发出该应答信号的射频卡进行读写操作，其特征在于，包括：5. Anti-collision device for multi-card identification, the radio frequency card obtains the task signal sent by the reader, and returns a response signal to the reader. If the reader recognizes a unique response signal, it will read and write to the radio frequency card that issued the response signal. It is characterized in that it includes: 数字标识信息识别模块，其分别识别对阅读器发出的任务信号进行应答的至少两个射频卡的数字标识信息；A digital identification information identification module, which respectively identifies the digital identification information of at least two radio frequency cards that respond to the task signal sent by the reader; 排序模块，其对识别到的数字标识信息进行排序；a sorting module, which sorts the identified digital identification information; 射频卡读写模块，其依所述排序的顺序对与数字标识信息对应的射频卡进行读写操作；A radio frequency card reading and writing module, which reads and writes the radio frequency card corresponding to the digital identification information according to the sorting order; 禁止应答模块，若读写失败则不允许该射频卡对该阅读器后续发出的信号进行应答；The response module is prohibited, if the read and write fails, the radio frequency card is not allowed to respond to the subsequent signals sent by the reader; 所述排序模块对识别到的数字标识信息进行排序是指：根据所述数字标识信息中的数字标识位数N的大小进行排序，与数字标识位数N对应的射频卡数量为1的数字标识信息的排序先于与数字标识位数N对应的射频卡数量不为1的数字标识信息。Sorting the identified digital identification information by the sorting module refers to: sorting according to the size of the digital identification number N in the digital identification information, and the number of radio frequency cards corresponding to the digital identification number N is a digital identification of 1. The sorting of the information precedes the digital identification information whose number of radio frequency cards corresponding to the number of digits N of the digital identification is not 1. 6.根据权利要求5所述的多卡识别的防冲突装置，其特征在于，包括筛选排序模块，其对数字标识位数N对应的射频卡数量不为1的数字标识信息进行筛选排序，每次筛选出数字标识的值最小的数字标识信息。6. The anti-collision device for multi-card identification according to claim 5, characterized in that it comprises a screening and sorting module, which screens and sorts the digital identification information whose number of radio frequency cards corresponding to the number of digital identification digits N is not 1, and each The digital ID information with the smallest value of the digital ID is filtered out. 7.根据权利要求6所述的多卡识别的防冲突装置，其特征在于，所述筛选排序模块具体地，记各个射频卡中数字标识位数N的最小值为n；阅读器发出参考值X的信号，X≥10n，取缩减比例为A，0＜A＜1，若数字标识位数为n的射频卡的数字标识的值小于根据缩减比例A调整后的参考值Xi，则该射频卡对参考值X的信号进行应答；对参考值X进行调整以使对参考值X进行应答的射频卡数量为1，对该射频卡进行读写操作。7. The anti-collision device for multi-card identification according to claim 6, wherein the screening and sorting module specifically records the minimum value of the number of digits N of the digital identification in each radio frequency card as n; the reader sends out a reference value The signal of X, X≥10n , takes the reduction ratio as A, 0<A<1, if the value of the digital ID of the radio frequency card with the number of digital IDs is n is less than the reference value Xi adjusted according to the reduction ratio A, then the The radio frequency card responds to the signal of the reference value X; the reference value X is adjusted so that the number of radio frequency cards responding to the reference value X is 1, and the read and write operations are performed on the radio frequency card. 8.根据权利要求5所述的多卡识别的防冲突装置，其特征在于，所述射频卡的数字标识是该射频卡的编号。8 . The anti-collision device for multi-card identification according to claim 5 , wherein the digital identification of the radio frequency card is the serial number of the radio frequency card. 9 .
CN201610780765.0A 2016-08-31 2016-08-31 Anti-collision method and device for multi-card identification Expired - Fee Related CN106407860B (en)

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