CN104680108A - Implementation method for supporting dual protocols by utilizing RFID chip - Google Patents
Implementation method for supporting dual protocols by utilizing RFID chip Download PDFInfo
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- CN104680108A CN104680108A CN201510145543.7A CN201510145543A CN104680108A CN 104680108 A CN104680108 A CN 104680108A CN 201510145543 A CN201510145543 A CN 201510145543A CN 104680108 A CN104680108 A CN 104680108A
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Abstract
The invention discloses an implementation method for supporting dual protocols by utilizing an RFID chip. The method is characterized by comprising the following steps: setting one of an ISO 14443 protocol and an ISO 15693 protocol on the RFID chip as a default supported protocol on the RFID chip; electrifying the RFID chip, simultaneously receiving instructions of the two protocols, further judging the types of the received instructions, entering a communication mode of the default protocol if the instruction of the default protocol is received, and automatically switching into another communication mode when one condition is met; and not responding to the instruction and starting condition judgment when the instruction of a non-default protocol is received, judging the subsequent received instruction, switching to the communication mode of the non-default protocol if the condition is met, and responding to the instruction of the protocol. According to the implementation method disclosed by the invention, double communication protocols are realized, and the chip can preferentially enter a defaulted protocol mode during use and automatically switch to another communication protocol when the condition is met according to the service condition. Therefore, two protocol modes can be switched according to needs.
Description
Technical field
The present invention relates to technology for radio frequency field, more specifically to a kind of implementation method utilizing RFID chip to support two agreement.
Background technology
At present, the communication protocol of high frequency RFID chip mainly contains two kinds, and one is ISO14443 agreement, and one is ISO15693 agreement.Two kinds of agreements have the feature in each self-application.ISO15693 agreement has that reading/writing distance is far away, group reads the features such as ability is strong, but communication speed is slower.ISO14443 protocol communication speed is fast, but close together, group reads indifferent.Along with the rise that NFC technique and Internet of Things are applied, the demand of two kinds of agreements is all being increased, will in conjunction with the two advantage if two kinds of communication protocols can be realized in a chips, realize in needs distance, group uses ISO15693 agreement when reading function, requiring that speed is fast, when such as mobile phone reads, selecting ISO14443 agreement.
The EM company in current Europe is also proposed the RFID chip supporting two agreements, combines the two advantage.Its implementation is that chip supports two kinds of agreements simultaneously, and the instruction receiving any agreement all can make response at once, but the feature of this mode is two kinds of agreements is equality, the communication protocol of chip neither one acquiescence.
But in some cases, such as read chip by the NFC function of mobile phone, we do not wish that chip supports two kinds of agreements simultaneously, and chip should support a kind of communication protocol under default situations, under certain condition meets, namely support another kind of agreement when special requirement.After a certain agreement of startup, just no longer support another kind of agreement, until power on next time, selection protocol again.
The present invention proposes a kind of implementation utilizing RFID chip to realize dual communication agreement, this chip preferentially can enter the protocol mode of an acquiescence in use, and according to situation when using, automatically switches to another kind of communication protocol when condition meets.Can realize like this switching between two kinds of protocol modes as required, substantially increase utility function.
Summary of the invention
The object of the present invention is to provide a kind of implementation utilizing RFID chip to realize dual communication agreement, this method preferentially can enter the protocol mode of an acquiescence in use, and according to situation when using, another kind of communication protocol is automatically switched to when condition meets, can realize like this switching between two kinds of protocol modes as required, greatly facilitate using function.
To achieve these goals, heat treatment method of the present invention is as follows:
Utilize RFID chip to support an implementation method for two agreement, it is characterized in that, comprise the following steps:
(1) a kind of in ISO 14443 agreement and ISO 15693 agreement is set to the agreement that acquiescence is supported in RFID chip;
(2) RFID chip is powered on, receive the instruction of two kinds of agreements simultaneously;
(3) judge the instruction type received, if receive the instruction of default protocol, then enter the communication pattern of default protocol, automatically switch to another kind of communication pattern when a kind of condition meets;
(4) if receive the instruction of non-default agreement, then do not respond this instruction and entry condition judgement, judge the follow-up instruction received, if condition meets, be switched to the communication pattern of non-default agreement, respond this protocol instructions.
The entry condition of above-mentioned steps (4) is judged as receiving some legal non-default protocol instructions continuously, after receiving some legal non-default protocol instructions continuously, then starts communication Protocol Conversion, is converted to non-default protocol communication pattern.
Above-mentioned steps (1) also comprises: RFID chip powered on, and utilizes the configuration words in interface controller module reading EE memory module, presets the count pick up condition of ISO 14443 agreement and 15693 agreements; ISO14443 protocol instructions coding and decoding module and ISO15693 protocol instructions coding and decoding module are set, complete the command reception to ISO14443 agreement and ISO15693 agreement respectively.
Above-mentioned steps (2) comprising: if receive the instruction meeting ISO 14443 protocol instructions counting condition, then close ISO15693 protocol instructions coding and decoding module, RFID chip is entered and receives ISO14443 protocol instructions pattern; If receive the ISO 15693 protocol instructions counting condition met, then close 14443 protocol code decoder modules.
The counting condition setting 14443 agreements is 1, the counting condition of setting ISO 15693 agreement is 5, if receive the instruction meeting ISO 14443 protocol instructions counting condition, then close ISO 15693 protocol instructions coding and decoding module, RFID chip is entered and receives ISO14443 protocol instructions pattern; If receive the ISO 15693 protocol instructions counting condition met, then continue to wait for ISO 15693 protocol counter module count; If receive 5 legal ISO 15693 protocol instructions continuously, then close ISO 14443 protocol code decoder module, chip enters the state receiving only ISO 15694 protocol instructions.
The invention has the beneficial effects as follows: the implementation achieving dual communication agreement, this RFID chip preferentially can enter the protocol mode of an acquiescence in use, and according to situation when using, another kind of communication protocol is automatically switched to when condition meets, can realize like this switching between two kinds of protocol modes as required, substantially increase utility function.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is the structural representation of RFID chip used in the present invention;
Fig. 2 is through the FB(flow block) of the method for the invention.
Embodiment
Below in conjunction with accompanying drawing 1 to Fig. 2, embodiments of the invention are elaborated; the present embodiment is implemented under premised on technical solution of the present invention; provide detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, which show the structured flowchart of the RFID chip that the present invention utilizes, this RFID chip includes ISO14443 instruction encoding/decoder module, ISO15693 instruction encoding/decoder module, ISO14443 instruction counter module, ISO15693 instruction counter module, interface controller module, ISO14443 instruction executer module, ISO15693 instruction executer module, state machine/control module module, EE memory module and RF module, wherein ISO14443 instruction encoding/decoder module completes the command reception to ISO14443 agreement, ISO15693 instruction encoding/decoder module completes the command reception to ISO15693 agreement, ISO14443 instruction counter module completes counting ISO14443 agreement successfully being received to instruction, ISO15693 instruction counter module completes counting ISO15693 agreement successfully being received to instruction, interface controller module is for setting the counting condition of two agreements, and control the enable work of two protocol code decoder modules, ISO14443 instruction executer module completes execution ISO14443 agreement successfully being received to instruction, ISO15693 instruction executer module: complete execution ISO15693 agreement successfully being received to instruction, state machine/control module module: the state transition and the integral control function that complete chip, EE memory module stores configuration data and user data, RF module: the modulation and demodulation function of simulating signal
As shown in Figure 2, the detailed process of implementation method of the present invention is as follows:
(1) in above-mentioned RFID chip, be set to by a kind of in ISO 14443 agreement and ISO 15693 agreement the agreement given tacit consent to and support, when chip application, two kinds of communication protocols can be supported simultaneously.
(2), during application, the instruction of two kinds of agreements after RFID chip powers on, can be received simultaneously;
(3) instruction received is judged, if receive the instruction of default protocol, then enter the communication pattern of default protocol.
(4) if receive the instruction of non-default agreement, then do not respond this instruction and entry condition judgement, judge the follow-up instruction received, if condition meets, be switched to the communication pattern of non-default agreement, respond this protocol instructions.
The entry condition of above-mentioned steps 3 middle finger judges, can be receive some legal non-default protocol instructions continuously.Such as receive 2,3 or N bar non-default protocol instructions continuously, then start communication Protocol Conversion, be converted to non-default protocol communication pattern.
Each interface controller module in the present invention in RFID chip can realize following function in above-mentioned steps of the present invention:
1, after RFID chip powers on, controller reads the configuration words in EE memory module, presets the count pick up condition of ISO 14443 agreement and ISO 15693 agreement.The counting condition such as setting ISO14443 agreement is 1, and the counting condition of setting ISO15693 agreement is 5.
2, use ISO14443 instruction encoding/decoder module and ISO15693 instruction encoding/decoder module function, prepare the instruction of reception two kinds of agreements.
3, now, if receive a legal ISO14443 protocol instructions, then close ISO15693 protocol code decoder module, make chip enter the pattern receiving ISO14443 protocol instructions.
If 4 receive a legal ISO15693 protocol instructions, then continue to wait for ISO15693 protocol counter module count,
If 5 receive 5 legal ISO15693 protocol instructions continuously, then close ISO14443 protocol code decoder module, chip enters the state receiving only ISO15694 protocol instructions.
Implementation method of the present invention proposes a kind of implementation realizing dual communication agreement, this chip preferentially can enter the protocol mode of an acquiescence in use, and according to situation when using, automatically switch to another kind of communication protocol when condition meets, can realize like this switching between two kinds of protocol modes as required.
In sum, be only preferred embodiment of the present invention, not be used for limiting scope of the invention process, all equalizations of doing according to shape, structure, feature and the spirit described in the claims in the present invention scope change and modify, and all should be included in right of the present invention.
Claims (5)
1. utilize RFID chip to support an implementation method for two agreement, it is characterized in that, comprise the following steps:
(1) a kind of in ISO 14443 agreement and ISO 15693 agreement is set to the agreement that acquiescence is supported in RFID chip;
(2) RFID chip is powered on, receive the instruction of two kinds of agreements simultaneously;
(3) judge the instruction type received, if receive the instruction of default protocol, then enter the communication pattern of default protocol, automatically switch to another kind of communication pattern when a kind of condition meets;
(4) if receive the instruction of non-default agreement, then do not respond this instruction and entry condition judgement, judge the follow-up instruction received, if condition meets, be switched to the communication pattern of non-default agreement, respond this protocol instructions.
2. the implementation method utilizing RFID chip to support two agreement according to claim 1, it is characterized in that, the entry condition of above-mentioned steps (3) is judged as receiving some legal non-default protocol instructions continuously, after receiving some legal non-default protocol instructions continuously, then start communication Protocol Conversion, be converted to non-default protocol communication pattern.
3. the implementation method utilizing RFID chip to support two agreement according to claim 1, it is characterized in that, above-mentioned steps (1) also comprises: RFID chip powered on, utilize the configuration words in interface controller module reading EE memory module, preset the count pick up condition of ISO 14443 agreement and ISO 15693 agreement; ISO14443 protocol instructions coding and decoding module and ISO15693 protocol instructions coding and decoding module are set, complete the command reception to ISO14443 agreement and ISO15693 agreement respectively.
4. the implementation method utilizing RFID chip to support two agreement according to claim 1, it is characterized in that, above-mentioned steps (2) comprising: if receive the instruction meeting ISO 14443 protocol instructions counting condition, then close ISO 15693 protocol instructions coding and decoding module, RFID chip is entered and receives ISO14443 protocol instructions pattern; If receive the ISO 15693 protocol instructions counting condition met, then close 14443 protocol code decoder modules.
5. the implementation method utilizing RFID chip to support two agreement according to claim 2, it is characterized in that, the counting condition of setting ISO 14443 agreement is 1, the counting condition of setting ISO 15693 agreement is 5, if receive the instruction meeting ISO 14443 protocol instructions counting condition, then close ISO 15693 protocol instructions coding and decoding module, RFID chip is entered and receives ISO14443 protocol instructions pattern; If receive the ISO 15693 protocol instructions counting condition met, then continue to wait for ISO 15693 protocol counter module count; If receive 5 legal ISO 15693 protocol instructions continuously, then close ISO 14443 protocol code decoder module, chip enters the state receiving only ISO 15694 protocol instructions.
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| CN110138810A (en) * | 2019-06-28 | 2019-08-16 | 阳光电源股份有限公司 | Communications protocol switching method and system |
| CN110427790A (en) * | 2019-07-22 | 2019-11-08 | 阿里巴巴集团控股有限公司 | A kind of RFID device and the information processing method based on it |
| CN110995285A (en) * | 2019-12-27 | 2020-04-10 | 成都达安众科技有限公司 | UHF RFID step-by-step instruction decoding method and chip |
| US10789391B1 (en) | 2019-07-22 | 2020-09-29 | Alibaba Group Holding Limited | RFID information processing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110138810A (en) * | 2019-06-28 | 2019-08-16 | 阳光电源股份有限公司 | Communications protocol switching method and system |
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| CN104680108B (en) | 2018-03-13 |
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