CN101482935B - Active RFID label used for container electronic seal and its reading device - Google Patents
Active RFID label used for container electronic seal and its reading device Download PDFInfo
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- CN101482935B CN101482935B CN2008100391512A CN200810039151A CN101482935B CN 101482935 B CN101482935 B CN 101482935B CN 2008100391512 A CN2008100391512 A CN 2008100391512A CN 200810039151 A CN200810039151 A CN 200810039151A CN 101482935 B CN101482935 B CN 101482935B
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Abstract
The invention provides an active RFID (radio frequency identification label) for an electronic seal of a container, comprising a microprocessor, a power source and a radio frequency communication module disposed to send synchronous signals to outside in a clock circulation period and receive data information from a reader in a time far less than the period within the clock circulation period. Through the device, the radio frequency identification label sends the synchronous signals to the reader in advance so as to make a receiving starting time and interval of the label completely synchronous with an interval of sending data by the reader, thus the time for the identification label to receive information is greatly shortened. Viewed from the outside, the label continuously works in a certain period, but on the other hand, the information exchanging process actually needing power lasts for a very short time so that energy is obviously saved and very low power consumption is realized.
Description
Technical field
The present invention relates to a kind of active RFID label that is used for container electronic seal, and a kind of reader of communicating by letter with this active RFID tag.
Background technology
In recent years, automatic identifying method has obtained popularizing fast and promoting like sale of goods and logistics distribution aspect, commercial department, manufacturing enterprise and the material field of circulation in many service fields.Compared with the transmission of traditional Mechanical Contact, data carrier with one under reader between data to carry out non-contact transmission much flexible.According to the energy and the data transmission method that use, we are called radio-frequency recognition system (RFID-Radio Frequency Identification) to non-contacting recognition system.RFID is that a kind of radiowave that utilizes is read and write programmed recording medium; Radio-frequency technique is combined with the IC-card technology and can be used for the technology of remote, moving-target, wireless identification, have contactless, operating distance is big, precision is high, quick, all weather operations is handled in information gathering and series of advantages such as applied environment adaptability preferably.Rfid system is in concrete application process, and according to different application purposes and applied environment, the composition of system can be different, but with regard to its principle of work, system generally all is made up of electronic tag, reader and PC.Electronic tag can send and receive information attached on the target object that will discern, can do processing such as read/write according to the operational order of receiving; Reader is to gather electronic labeling information and electronic tag is sent the device of operational order, and the order of sending comprises read/write, selects order such as cancellation selections grade.
Whether have supplying cell according to label and be divided into two types of active label and passive labels.For active label card; Structured flowchart is seen Fig. 1; Reader 1 is received and dispatched the information data that electromagnetic waves carry through its radio-frequency communication module 2; Label card radio-frequency communication module 3 receives the information of readers and gives microprocessor 4, and the electromagnetic reflection that the microprocessor 4 of label sends through 3 pairs of readers of its radio-frequency communication module of modulation 1 passes to reader 1 with self information.Two secondary radio-frequency communication module play a part message exchange.Battery 5 is the chip power supply of label.Passive label card, self does not have power supply, and the energy that chip operation needs comes from the radio-frequency communication module of label.Radio-frequency communication module itself has the person's character of two-way operation, and radio-frequency communication module can convert electric energy to electromagnetic energy in other words, sends with form of electromagnetic wave, also can convert the electromagnetic wave that receives to electric energy.Its principle of work block diagram is seen Fig. 2.Reader 1 is received and dispatched the information data that electromagnetic waves carry through its radio-frequency communication module 2, and the information that the radio-frequency communication module 3 of label receives readers 1 passes to microprocessor 4, converts the electromagnetic wave that receives to electric energy simultaneously and supplies microprocessor 4 to use.Because the finite energy of antenna emission; Active label of the general employing of the RF identification of remote so (generally greater than 10 meters); Radio-frequency communication module is that the energy that consumes in the radio-frequency receiving-transmitting is bigger in the exchange interaction of information, and the energy that label needs in communication is supplied with by battery.When being loaded with being identified target and getting into the read range of reader of label, label received RF wave beam, the information that the demodulation electromagnetic wave carries is modulated the reflection of label card radio-frequency communication module simultaneously, communicates with reader.Prolongation along with service time; The electric weight of battery descends; Make the operating distance of automatic recognition system descend, do not know the power consumption of battery the user, reader system possibly can not get the information of label card and cause the identification of tag system and the omission of record.
A kind of said exactly label of method that relatively effectively reduces power consumption is set to triggered mode of operation at present, and promptly label generally is in dormant state, when being triggered by outer signals, just gets into duty, can reduce battery power consumption widely like this.But there is following problem in triggering mode in real world applications: reliable trigger property, triggering distance, trigger equipment installation etc.Such as the problem of metal blow-out disc, be installed in the signal that electronic tag on the glass for vehicle window can't receive reader and cause and can't trigger, just equal and can't work.
Therefore, still there is improved necessity in the communication means of present active RFID tag.
Summary of the invention
Therefore the present invention's technical matters that will solve is the REID that a kind of low-power consumption is provided, and reader is different from present triggered mode of operation, all kinds of problems of avoiding in the triggered mode of operation being produced.
According to above-mentioned purpose of the present invention; The invention provides a kind of active RFID label that is used for container electronic seal; Comprise a microprocessor, a power supply and a radio-frequency communication module; Wherein, said radio-frequency communication module is configured to send synchronizing signal with a clock cycle period to the outside, and in said clock cycle period, receives the data message from reader with the time much smaller than the said cycle.Preferably, in a clock cycle period of said active RFID tag, the time of its dormancy is not less than 10 with the ratio that receives from used time of data message of reader
3And preferably, the clock cycle period of said active RFID tag is 100ms, and the synchronous transmission time slot that said radio-frequency communication module receives from the data message of reader is 100 μ s.
Pass through technique scheme; Active RFID tag periodically sends synchronizing signal to reader; Thereby the time slot and the reader that make the reception data of label send the time slot strict synchronism of data, have so just avoided the reliable trigger property problem that faces in the trigger-type working method.And, though label is with certain cycle continuous working,, the real information interactive process that needs power consumption has only continued little time, can save power supply energy, realizes low-power consumption.
According to another object of the present invention; The present invention also provides a kind of reader of communicating by letter with RFID tag; Comprise a radio-frequency communication module; Wherein, said radio-frequency communication module is set in response to the synchronizing signal from active RFID tag, in the synchronous transmission time slot that said active RFID tag is confirmed, sends data message to said active RFID tag.
Reader is through technique scheme, and reader sends information to said active RFID tag in the synchronous transmission time slot, and its information interactive process duration is short, can save power supply energy, realizes low-power consumption.
Description of drawings
Fig. 1 is the work block diagram of active label card;
Fig. 2 is the work block diagram of passive label card; And
Fig. 3 carries out block diagram synchronously for active RFID tag of the present invention and the reader work of receiving and sending messages.
Embodiment
Consult shown in Figure 1ly, active RFID tag of the present invention comprises a radio-frequency communication module 3, one and said radio-frequency communication module 3 microprocessor linked 4, and for label the battery 5 of electric energy is provided.Accordingly, the reader 1 with said label communication also comprises a radio-frequency communication module 2.
In actual use; Active RFID tag is attached on the article; When these article get near said reader; When promptly getting into the working range of radio- frequency communication module 2,3, thereby said active RFID tag and said reader just can carry out the mutual communication Data transmission through radio- frequency communication module 2,3, and battery 5 provides energy for label in this process.
Sending under the identical situation of data volume, accomplish to save the work efficiency that power supply energy will improve communication, reduce the working time.One of method is the speed that increases the radio communication of radio- frequency communication module 2,3, and the communication speed that adopts in the present embodiment is 2Mbps, under the situation that transmits identical data, can reduce the working time; It two is the precise synchronization that realize reader and label transceive data process, makes the reception opening time of label 4 and the gap strict synchronism of gap and reader 1 transmission data, so just can accomplish to make label 4 really to need the information interactive process of power consumption to accomplish the shortest.
As shown in Figure 3; For realize between reader and the label synchronously; The radio-frequency communication module of said active RFID tag is configured to send synchronizing signal with a clock cycle period to the outside, and in said clock cycle period, receives the data message from reader with the time much smaller than the said cycle.
After reader receives above-mentioned synchronizing signal, just get into and send information state, electronic tag oneself also gets into the reception information state simultaneously.Through prior accurate Calculation; Reader is launched data message in the synchronous transmission time slot that active RFID tag is confirmed; Correspondingly; Active RFID tag is receiving data information in identical synchronous transmission time slot, makes the process strict synchronism of reception information of process and active RFID tag of transmission information of reader; Preferable; For instance; Label of the present invention is to continue outwards to send synchronizing signal the cycle with 100ms, and the time set of said radio- frequency communication module 2,3 transmission/receiving data informations is 100 μ s, makes the dormancy/working time ratio of RFID tag reach 10
3The order of magnitude.Like this, label sends synchronizing signal continuously with the cycle of 100ms, and its power consumption is minimum; And the information interactive process that really needs power consumption only continues 100 μ s, thereby can significantly save power supply energy.
Claims (3)
1. an active RFID label that is used for container electronic seal comprises a microprocessor, a power supply and a radio-frequency communication module, it is characterized in that:
Said radio-frequency communication module is configured to send synchronizing signal with a clock cycle period to the outside; And in the synchronous transmission time slot of said clock cycle period, receive data message from reader; The clock cycle period of said active RFID tag is 100ms, and the synchronous transmission time slot that said radio-frequency communication module receives from the data message of reader is 100 μ s.
2. the active RFID label that is used for container electronic seal as claimed in claim 1 is characterized in that: the traffic rate of said radio-frequency communication module is 2Mbps.
3. a reader of communicating by letter with active RFID label as claimed in claim 1 comprises a microprocessor, a power supply and a radio-frequency communication module, it is characterized in that:
Said radio-frequency communication module is set in response to the synchronizing signal from active RFID tag, in the synchronous transmission time slot that said active RFID tag is confirmed, sends data message to said active RFID tag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100391512A CN101482935B (en) | 2008-06-18 | 2008-06-18 | Active RFID label used for container electronic seal and its reading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100391512A CN101482935B (en) | 2008-06-18 | 2008-06-18 | Active RFID label used for container electronic seal and its reading device |
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| Publication Number | Publication Date |
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| CN101482935A CN101482935A (en) | 2009-07-15 |
| CN101482935B true CN101482935B (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100391512A Expired - Fee Related CN101482935B (en) | 2008-06-18 | 2008-06-18 | Active RFID label used for container electronic seal and its reading device |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044103B (en) * | 2009-10-15 | 2012-07-18 | 香港理工大学 | RFID (Radio Frequency Identification Device) electronic seal based container management system and method |
| CN106129906B (en) * | 2016-06-30 | 2019-01-11 | 中国一冶集团有限公司 | A kind of Industrial Engineering cable process information processing method |
| CN108922376B (en) * | 2018-07-12 | 2020-12-08 | 中国工商银行股份有限公司 | Product opening detection method, device and system |
| CN117480823A (en) * | 2021-06-28 | 2024-01-30 | Oppo广东移动通信有限公司 | Wireless communication method and device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101093556A (en) * | 2007-07-27 | 2007-12-26 | 北京华大恒泰科技有限责任公司 | Active radio frequency identification label, system and reading / writing method |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101093556A (en) * | 2007-07-27 | 2007-12-26 | 北京华大恒泰科技有限责任公司 | Active radio frequency identification label, system and reading / writing method |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2005-316724A 2005.11.10 |
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| CN101482935A (en) | 2009-07-15 |
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