CN101236594A - Rapid response long distance recognition radio frequency label - Google Patents
Rapid response long distance recognition radio frequency label Download PDFInfo
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- CN101236594A CN101236594A CNA2008100008737A CN200810000873A CN101236594A CN 101236594 A CN101236594 A CN 101236594A CN A2008100008737 A CNA2008100008737 A CN A2008100008737A CN 200810000873 A CN200810000873 A CN 200810000873A CN 101236594 A CN101236594 A CN 101236594A
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Abstract
The invention relates to a rapid response and long-distance identification radio-frequency tag which comprises a radio-frequency chip, a main control MCU, etc.; the invention is provided with a global unique ID number, variable information which has 4K byte maximal capacity and can be rewritten by users; a special factory power-saving mode, thereby reducing meaningless energy consumption. At the same time, the invention provides a communication mechanism with rapid response between a reader-writer and a tag, which comprises the following: the first step: the reader-writer emits an enabled broadcast frame; the second step: the tag receives the enabled broadcast frame; the third step: the tag carries out random delay; the fourth step: the tag carries out signal channel detection; the fifth step: the tag sends data information; the sixth step: the reader-writer receives the data information of the tag; the seventh step: the tag verifies whether the reader-writer receives the data information or not; the eighth step: the tag enters into a long dormant state. The invention can meets the requirements of remote identification and rapid response in practical application and can solve the practical application in management of outdoor billboards, container freight stations, etc.
Description
Technical field
The present invention relates to a kind of remote-wireless radio-frequency (RF) identification, especially relate to a kind of rapid response long distance recognition radio frequency label.
Background technology
The RFID technology is the abbreviation of Radio Frequency Identification, and the meaning is a radio frequency identification, and it is a kind of new technology of automatic identification field.It is by the automatic recognition objective object of radio-frequency communication signal and obtain related data, and identification work need not manual intervention, can work in various rugged surroundings.REID has the identification high-speed moving object and can discern a plurality of labels simultaneously.In a word, REID has and can discern a plurality of objects, read-write, characteristics such as penetration power is strong, decipherment distance is far away, recognition speed is fast, physical life is long, conforming property is good simultaneously.
At present, most radio-frequency (RF) tag on the market, its frequency point ranges is distributed as low-frequency range 125kHz, high band 13.56MHz, several big frequency ranges such as UHF 800～915MHz and microwave 2.4GHz～5.8GHz.Because hardware constraints or software protocol restriction, the radio-frequency (RF) tag of each frequency range all has its limitation.The decipherment distance of each frequency range label sees the following form:
| Parameter | Low frequency | High-frequency | UHF | Microwave |
| Frequency range | 125～134kHz | 13.56MHz | 868～915MHz | 2.4～5.8GHz |
| Decipherment distance | 0.1～1 meter | 0.7～1.2 meters | Reach 4 meters | Reach 15 meters |
Because the restriction of decipherment distance makes the RFID radio-frequency (RF) tag be affected in remote identification field.
Transceiver also had significant progress in recent years, the sign that merges gradually with RFID.Particularly in conjunction with the Zigbee technology of network communicating function, new micropower transceiver communication mode has the effective radius up to 100 meters.But its complicated procotol of Zigbee technology can't satisfy the requirement of high-speed moving object reading speed.
Often need remote identification and identification at a high speed simultaneously in a lot of applications, but seldom have product can satisfy the two simultaneously.
At present, outdoor billboard is mainly by hand inspection.Because outdoor billboard quantity is big, the problem outdoor billboard is mixed in together with legal outdoor billboard, bring very big work difficulty for inspection and processing.And adopt the RFID technology to the outdoor billboard management, will contain effectively that problem outdoor billboard ground spreads unchecked, and be not only the important issue that digitalized city is built, also be to eliminate urban safety hidden danger.
But because laying of outdoor billboard is general all in the place that ordinary person's difficulty arrives, the position of Gao Ceng roof or liftoff tens meters or tens meters for example, this just requires the decipherment distance of equipment to want far will reach more than 100 meters at least.The law enfrocement official might be to drive the law enforcement car to patrol and examine when law enforcement, so just requires the speed of recognition of devices to want fast, can not misread or skip.As previously mentioned, require radio frequency identification devices to possess functions such as overlength distance identification and quick identification simultaneously in the practical application.
Same problem also is present in other management domain, in the management as container freight station, goes out when inbound at container, to the identification of container tag.
Summary of the invention
Problem to be solved by this invention provides a kind of rapid response long distance recognition radio frequency label, and label comprises electric battery, printed board antenna, radio frequency chip, main control MCU and pilot lamp; The communication mechanism that described label and the read write line supporting with it are discerned at a high speed, it comprises the steps:
The first step: read write line goes out to activate broadcast frame;
Second step: label receives and activates broadcast frame;
The 3rd step: label is prepared random delay before doing and sending data for the first time;
The 4th step: label is prepared before doing and sending data for the second time, and label detects channel;
The 5th step: label sends data message;
The 6th step: read write line receives label data information;
The 7th step: whether the label check read write line receives data message;
The 8th step: label enters long dormant state;
Described label has the variable information of globally unique ID number and the rewritable maximum 4K capacity of user, and described global unique ID number comprises the content of 64Bits: application message, obligate information, national information, regional information and sequence number be totally 5 contents; Described sequence number is 32Bits altogether, and 4,294,967,296 different sequence numbers can be provided, and described label has the specific energy-saving mode of dispatching from the factory.
The described energy-saving mode of dispatching from the factory is the state that label is in a kind of deep-sleep, automatically wake up once at interval at set intervals, wait is activated, when the time interval of its dormancy is the label operate as normal 10 of sleep interval times, after the final user writes the access customer variable information by read write line or card sender, read write line will send the special command frame and activate label, make label be converted to normal mode of operation, use for the final user.
Comprise read write line ID number, the authentication information of read write line and the up-to-date label ID that receives number in the activation broadcast frame that read write line sends in the first step of described step.
Labeling requirement is carried out authentication operations to the activation broadcast frame of read write line in second step of described step.
Label will start random delay in the 3rd step of described step, and the artificial label that staggers sends the starting point of data, reduces the conflict that label sends data simultaneously.
The Energy detect (ED) that label provides by radio frequency chip in the 4th step of described step is that energy detects the microwave energy on the communication channel, it is the quality of connection indication that its algorithm that provides can provide Link QualityIndication (LQI), and whether detect channel idle.
The 7th step acceptance of the bid of described step transfers the activation broadcast frame that accepting state receives read write line to after signing and sending data message, judges the information that wherein whether comprises self, and then label transfers dormant state to; As not comprising self information, then label transfers state of activation to.
After label confirms that read write line is received the data message of self in the 8th step of described step, a kind of state of long-time dormancy will be entered.
The present invention has following beneficial effect:
This rapid response long distance recognition radio frequency label provided by the invention can satisfy in the practical application not only that needs are discerned at a distance but also the needs demand of response fast, the practical application that can solve billboard management out of doors, Containerizable Cargo station administration etc.
Description of drawings
Fig. 1 is label hardware structure diagram among the present invention.
Fig. 2 is the state transition graph of label among the present invention.
Fig. 3 is the operational flowchart of read write line among the present invention and label.
Fig. 4 is the outside drawing synoptic diagram of label among the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is label hardware structure diagram among the present invention.Label comprises electric battery 301, printed board antenna 302, radio frequency chip 303, main control MCU 304 and pilot lamp 305; Label has the variable information of global unique ID number and the rewritable maximum 4K capacity of user, label whole world unique ID number comprises the content of 64Bits: comprise application message, obligate information, national information, regional information and sequence number totally 5 contents, sequence number is 32Bits altogether, can provide 4,294,967,296 different sequence numbers.
Label possesses the realization of the energy-saving mode of dispatching from the factory.
All finished following operation when each label dispatches from the factory: a communication channel is set, write with the label shell on ID number corresponding to global unique ID number of laser engraving, enter the energy-saving mode of dispatching from the factory automatically.
The energy-saving mode of dispatching from the factory is a kind of unconventional mode of operation, and label is in a kind of deep sleep state, wakes up automatically once at interval at set intervals, and wait is activated.When the time interval of its dormancy is the label operate as normal 10 of sleep interval times.
After the final user writes the access customer variable information by read write line or card sender, read write line or card sender will send the activation command frame and activate label, make label be converted to normal mode of operation, use for the final user.
Fig. 2 is the state transition graph of label among the present invention.Tag state and the defined declaration thereof that the present invention relates to are as follows:
201: dormant state
Label is all closed the most functions on radio frequency chip and the main control MCU for energy-conservation, makes it be in energy-saving mode, to slow down battery consumption.Label will no longer respond any order of read write line in dormant state.
202: accepting state
Label receives the activation broadcast frame or the command frame of read write line, and the data that receive are carried out verification, guarantees the accuracy of data, simultaneously according to the different subsequent operations of different command execution.
203: authentication status
Behind the data message that receives read write line of label success, enter authentication status.Under this state, label will verify that read write line sends the legitimacy of data message, and only guaranteed both sides' identity is legal, could set up the safe communication link, guarantees that follow-up information is safe.
204: state of activation
State of activation is a transition state, after read write line sends the activation broadcast frame, label in its effective range all can enter state of activation, the label in the scope sent data simultaneously and influenced each other this moment, each label that enters state of activation all will start a random delay, make label generation difference at random in the order of response read write line, reduce the probability of conflict.
205: detected state
Detected state is whether label detection wireless channel is idle.Detect the wireless channel free time, then explanation does not have other label to be in transmit status, and send data message and can not be affected this moment, and next step will be transformed into transmit status; If it is busy to detect wireless channel, then explanation has other label to be in transmit status, in order to guarantee that not influencing other label sends data, then no longer sends data message, and next step will be transformed into state of activation.
206: transmit status
When detecting wireless channel during the free time, label will enter transmit status.Label will send different data messages according to the read write line the corresponding command that receives this moment, finish with read write line alternately.
Fig. 3 is the operational flowchart of read write line among the present invention and label.The detailed process of the read write line that the present invention relates to and the means of communication of label comprises the steps:
First step read write line sends the activation broadcast frame.
When read write line will read all labels in the effective range, to send special command frame---activate broadcast frame, work as label like this and enter effective radio frequency active region, after perhaps read write line entered label existence district, label will be activated and send data message to read write line.Wherein, activate and to comprise read write line ID number, the authentication information of read write line and the up-to-date label ID that receives number in the broadcast frame.
The second step label receives and activates broadcast frame.
Label at ordinary times the most of the time be in dormant state, will be converted to accepting state every a specific time and receive data.The time of an accepting state of label will be longer than read write line and be sent out the time that two frames activate broadcast frame continuously, then as long as label is in effective radio frequency active region, will be bound to receive the activation broadcast frame.
In a single day label receives the activation broadcast frame, then is converted to authentication status from accepting state.In authentication process, label will be checked with authentication information read write line ID number in the activation broadcast frame, to guarantee the security of data message.Authentication then is converted to the NextState state of activation by label, if authentication can not be passed through, then label will go to dormant state, no longer respond this read write line.
The 3rd step label is prepared random delay before doing and sending data for the first time.
When label is in state of activation, be not to send data message immediately, receive the activation broadcast frame yet and be in state of activation, send data simultaneously and will cause miscommunication because have a plurality of labels simultaneously.At this moment label will start random delay, and the artificial label that staggers sends the starting point of data, reduces the conflict that label sends data simultaneously.
The 4th step label is prepared before doing and sending data for the second time, and label detects channel.
Label detects channel, be to detect microwave energy on the communication channel by the Energy detect (ED) that radio frequency chip provides, it is the quality of connection indication that its algorithm that provides can provide Link Quality Indication (LQI), represent channel busy if microwave energy is above standard, do not represent channel idle if microwave energy reaches standard;
If label detects channel idle, then label is converted to transmit status, sends data message to read write line.
If label detects channel busy, then label is converted to state of activation.
In the 5th step, label sends data message.
After label is converted to transmit status, send data message immediately.After transmission finishes, label will be converted to accepting state.It is to be noted, though random delay wait and channel idle detection can reduce the conflicting probability of label but can not avoid fully, if the label more than 2 or 2 sends data message simultaneously, then read write line can information not available or is received error message and by the verification of CRC16 it is got rid of.
In the 6th step, read write line receives label data information.
After read write line was received label data information, what will do at first was the correctness and the integrality of checking data, and its means have the verification of the CRC16 of the hardware check of radio frequency chip self and software protocol.Then, read write line will carry out authentication operations to label data information, guarantee the confidentiality of data.If authentication operations is passed through, read write line will activate the partial information that adds this label in the broadcast frame at next frame, and the data that the expression label sends are received.
In the 7th step, whether the label check read write line receives data message.
After label sent data message, transferring accepting state to was in order to receive the activation broadcast frame of read write line.See to activate in the broadcast frame whether comprise the information of self, as comprise self information and represent that then read write line received data message that then label transfers dormant state to; As not comprising self information, then label transfers state of activation to, promptly
In the 3rd step, begin to resend data message.More than operation all is to carry out under the situation that verification and authentication are passed through, and details is with second step.
In the 8th step, label enters long dormant state.
Label will enter a kind of state of long-time dormancy after confirming that read write line is received the data message of self, and the time interval of waking up automatically is at ordinary times 10 times.Send data message because more time can be given other label like this.
Can not receive the activation broadcast frame when waking up automatically for continuous 3 times, then tag read-write equipment has been finished and has once been read the label process, and label will transfer the normal hibernation state to, waits for next time being activated of read write line.
Claims (9)
1, a kind of rapid response long distance recognition radio frequency label is characterized in that, label comprises electric battery (301), printed board antenna (302), radio frequency chip (303), main control MCU (304) and pilot lamp (305); The communication mechanism that described label and the read write line supporting with it are discerned at a high speed, it comprises the steps:
The first step: read write line goes out to activate broadcast frame;
Second step: label receives and activates broadcast frame;
The 3rd step: label is prepared random delay before doing and sending data for the first time;
The 4th step: label is prepared before doing and sending data for the second time, and label detects channel;
The 5th step: label sends data message;
The 6th step: read write line receives label data information;
The 7th step: whether the label check read write line receives data message;
The 8th step: label enters long dormant state.
2, rapid response long distance recognition radio frequency label according to claim 1, it is characterized in that: described label has the variable information of globally unique ID number and the rewritable maximum 4K capacity of user, and described global unique ID number comprises the content of 64Bits: application message, obligate information, national information, regional information and sequence number be totally 5 contents; Described sequence number is 32Bits altogether.
3, rapid response long distance recognition radio frequency label according to claim 2, it is characterized in that: the energy-saving mode of dispatching from the factory of described label is the state that label is in a kind of deep-sleep, automatically wake up once at interval at set intervals, wait is activated, when the time interval of its dormancy is the label operate as normal 10 of sleep interval times, after the final user writes the access customer variable information by read write line, read write line will send the special command frame and activate label, make label be converted to normal mode of operation, use for the final user.
4, according to claim 1 or 3 described rapid response long distance recognition radio frequency labels, it is characterized in that: comprise read write line ID number, the authentication information of read write line and the up-to-date label ID that receives number in the activation broadcast frame that read write line sends in the first step of described step.
5, according to claim 1 or 3 described rapid response long distance recognition radio frequency labels, it is characterized in that: labeling requirement is carried out authentication operations to the activation broadcast frame of read write line in second step of described step.
6, according to claim 1 or 3 described rapid response long distance recognition radio frequency labels, it is characterized in that: label will start random delay in the 3rd step of described step, and the label that staggers sends the starting point of data, reduces the conflict that label sends data simultaneously.
7, according to claim 1 or 3 described rapid response long distance recognition radio frequency labels, it is characterized in that: the energy measuring that label provides by radio frequency chip in the 4th step of described step detects the microwave energy on the communication channel, this microwave energy provides and provides the quality of connection indication, and whether detect channel idle.
8, according to claim 1 or 3 described rapid response long distance recognition radio frequency labels, it is characterized in that: after the 7th step acceptance of the bid of described step is signed and sent data message, transfer the activation broadcast frame that accepting state receives read write line to, judge the information that wherein whether comprises self, then label transfers dormant state to; As not comprising self information, then label transfers state of activation to.
9, according to claim 1 or 3 described rapid response long distance recognition radio frequency labels, it is characterized in that: after label confirms that read write line is received the data message of self in the 8th step of described step, will enter a kind of state of long-time dormancy.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101685494A (en) * | 2008-09-25 | 2010-03-31 | 晨星软件研发(深圳)有限公司 | Control method of radio frequency identification tag and radio frequency identification system using same |
| CN101762814A (en) * | 2010-02-02 | 2010-06-30 | 杭州中芯微电子有限公司 | Radio-frequency tracking, positioning and monitoring system |
| CN101964672A (en) * | 2010-09-07 | 2011-02-02 | 深圳市远望谷信息技术股份有限公司 | Near field communication method of non-contact radio frequency identification devices |
| CN102110223A (en) * | 2011-01-30 | 2011-06-29 | 福建鑫诺通讯技术有限公司 | System and method for RFID (Radio Frequency Identification Devices) remote-distance card-reading |
| CN104239831A (en) * | 2013-06-13 | 2014-12-24 | 山东新北洋信息技术股份有限公司 | RF label processing method and RF label processing device |
| CN104634402A (en) * | 2015-02-03 | 2015-05-20 | 成都秦川科技发展有限公司 | Intelligent gas meter managing method based on wireless capability |
| CN104702767A (en) * | 2013-12-04 | 2015-06-10 | 中国电信股份有限公司 | Method, subscriber identity module card and system used for sending messages |
| CN104729611A (en) * | 2015-02-03 | 2015-06-24 | 成都秦川科技发展有限公司 | State management method for intelligent gas meter |
| CN106373358A (en) * | 2016-08-31 | 2017-02-01 | 成都前锋电子仪器有限责任公司 | Data forwarding method of concentrator and collector |
| CN109526068A (en) * | 2018-12-11 | 2019-03-26 | 深圳市联智物联网科技有限公司 | A kind of full duplex base station that realizing fast wake-up and wireless communication system |
| CN109526022A (en) * | 2018-12-11 | 2019-03-26 | 深圳市联智物联网科技有限公司 | A method of realizing that data upload low collision in magnanimity wireless terminal scene |
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| CN101685494A (en) * | 2008-09-25 | 2010-03-31 | 晨星软件研发(深圳)有限公司 | Control method of radio frequency identification tag and radio frequency identification system using same |
| CN101762814A (en) * | 2010-02-02 | 2010-06-30 | 杭州中芯微电子有限公司 | Radio-frequency tracking, positioning and monitoring system |
| CN101964672A (en) * | 2010-09-07 | 2011-02-02 | 深圳市远望谷信息技术股份有限公司 | Near field communication method of non-contact radio frequency identification devices |
| CN101964672B (en) * | 2010-09-07 | 2013-10-30 | 深圳市远望谷信息技术股份有限公司 | Near field communication method of non-contact radio frequency identification devices |
| CN102110223A (en) * | 2011-01-30 | 2011-06-29 | 福建鑫诺通讯技术有限公司 | System and method for RFID (Radio Frequency Identification Devices) remote-distance card-reading |
| CN104239831A (en) * | 2013-06-13 | 2014-12-24 | 山东新北洋信息技术股份有限公司 | RF label processing method and RF label processing device |
| CN104239831B (en) * | 2013-06-13 | 2017-08-01 | 山东新北洋信息技术股份有限公司 | RF label processing methods and RF label processing devices |
| CN104702767A (en) * | 2013-12-04 | 2015-06-10 | 中国电信股份有限公司 | Method, subscriber identity module card and system used for sending messages |
| CN104729611A (en) * | 2015-02-03 | 2015-06-24 | 成都秦川科技发展有限公司 | State management method for intelligent gas meter |
| CN104634402A (en) * | 2015-02-03 | 2015-05-20 | 成都秦川科技发展有限公司 | Intelligent gas meter managing method based on wireless capability |
| CN104729611B (en) * | 2015-02-03 | 2018-02-16 | 成都秦川物联网科技股份有限公司 | Intelligent gas meter method of state management |
| CN106373358A (en) * | 2016-08-31 | 2017-02-01 | 成都前锋电子仪器有限责任公司 | Data forwarding method of concentrator and collector |
| CN106373358B (en) * | 2016-08-31 | 2020-06-02 | 成都前锋电子仪器有限责任公司 | Data forwarding method for concentrator and collector |
| CN109526068A (en) * | 2018-12-11 | 2019-03-26 | 深圳市联智物联网科技有限公司 | A kind of full duplex base station that realizing fast wake-up and wireless communication system |
| CN109526022A (en) * | 2018-12-11 | 2019-03-26 | 深圳市联智物联网科技有限公司 | A method of realizing that data upload low collision in magnanimity wireless terminal scene |
| CN109561491A (en) * | 2018-12-11 | 2019-04-02 | 深圳市联智物联网科技有限公司 | A kind of half-duplex wireless communication system for realizing energy conservation wake-up |
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