CN201830257U - Active radio frequency identification repeater - Google Patents
Active radio frequency identification repeater Download PDFInfo
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- CN201830257U CN201830257U CN2010205427890U CN201020542789U CN201830257U CN 201830257 U CN201830257 U CN 201830257U CN 2010205427890 U CN2010205427890 U CN 2010205427890U CN 201020542789 U CN201020542789 U CN 201020542789U CN 201830257 U CN201830257 U CN 201830257U
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- label
- repeater
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Abstract
The utility model relates to an active radio frequency identification repeater comprising a driving circuit, a power supply and a microprocessor which are respectively connected with the driving circuit, a tamper sensor used for detecting magnetic fields, a first transceiver and a second transceiver. By effectively solving the problem that a label can not communicate with a reader as the label is in an electromagnetic shielding occasion or further away from the reader, the active radio frequency identification repeater has wide market application prospect.
Description
Technical field
The utility model relates to a kind of repeater, is specifically related to a kind of active radio-frequency (RF) identification repeater.
Background technology
Repeater (RP repeater) is a kind of device that connects network line, is usually used in the two-way forwarding work of physical signalling between two network nodes.Repeater is the simplest network interconnection device, mainly finishes the function of physical layer, is responsible on the physical layer of two nodes step-by-step and transmits information, finishes the duplicating of signal, adjustment and enlarging function, prolongs the length of network with this.Owing to there is loss, Chuan Shu signal power can decay gradually on the line, will cause distorted signals when decaying to a certain degree, therefore can cause receiving mistake.Repeater designs for addressing this problem.It finishes the connection of physical circuit, and the signal of decaying is amplified, and keeps identical with former data.
Radio-frequency (RF) identification (Radio frequency identification RFID) system is made up of two parts: read/write cell and electronic transceivers.Read write line sends electromagnetic pulse by antenna, and transceiver receives these pulses and sends canned data to read write line in response.
The basic functional principle of RFID technology is: label (is made up of coupling element and chip, each label has unique electronic code, the high power capacity electronic tag has the writeable memory space of user, on object, the sign destination object) enter magnetic field after, receive the radiofrequency signal that read write line sends, rely on the energy that induced current obtained to send out the product information (PassiveTag that is stored in the chip, passive label or passive label), perhaps initiatively send the signal (ActiveTag, active label or active tag) of a certain frequency; After read write line reads information and decoding, deliver to CIS and carry out the relevant data processing.Thereby marker is discerned.
Yet,, need the assets of tracing management and article great majority to be placed in the metal framework of sealing, and according to electromagnetism as can be known, metal framework has good electromagnetic shielding action, causes the label of assets and article to communicate with read write line in a lot of occasions; Also have a kind of situation to be, label and read write line apart from each other, and read write line can only be limited to original position cause the read write line can't reading tag information.
The utility model content
In order to solve above-mentioned prior art problems, even the utility model provides a kind of label in the electromagnetic shielding occasion, perhaps label and read write line apart from each other also can make label and read write line normally discern the active electronic identification repeater of work.
To achieve these goals, the technical solution adopted in the utility model is as follows: a kind of active radio-frequency (RF) identification repeater, comprise drive circuit, and the power supply that is connected with drive circuit respectively, microprocessor, the tamper sensor that is used to detect magnetic field, first transceiver, second transceiver.
First transceiver is provided with external antenna.
Second transceiver is provided with built-in aerial.
Power supply can adopt internal cell power supply, perhaps outside direct current supply mode.
The utility model compared with prior art combines the repeater technology with the RIFD technology, efficiently solve label the electromagnetic shielding occasion or with read write line apart from each other, and the problem that causes label and read write line to communicate.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment
Fig. 2 is the application process schematic diagram of the utility model embodiment
Embodiment
As shown in Figure 1, a kind of active radio-frequency (RF) identification repeater, comprise drive circuit, and the processor module of the adjacent side of the power module that is connected with drive circuit respectively, power module, the tamper sensing detection module of the adjacent side of processor module, the radio-frequency (RF) receiving and transmission module 1 of the adjacent side of processor, the radio-frequency (RF) receiving and transmission module 2 of radio-frequency (RF) receiving and transmission module 1 adjacent side.
Described radio-frequency (RF) receiving and transmission module 1 is provided with external antenna.Described radio-frequency (RF) receiving and transmission module 2 is provided with built-in aerial.Power module adopts internal cell supply power mode (also can select outside direct current supply mode according to actual operating position).
Described drive circuit is used to connect each module, and making between each module can exchange data information;
Described tamper sensing detection module is used to detect the magnetic field that read write line sends;
Described radio-frequency (RF) receiving and transmission module 1 is used to read and write some a plurality of label informations, adopts intermittent duty, driven by inner real-time timepiece chip (Real-Time Clock RTC) clock;
Described radio-frequency (RF) receiving and transmission module 2 is used for carrying out information exchange with read write line, also adopts intermittent duty, driven by radio-frequency (RF) receiving and transmission module 1;
Radio-frequency (RF) receiving and transmission module 1 and radio-frequency (RF) receiving and transmission module 2 all work alone, and the frequency of employing is 2.4Ghz-2.4853Ghz, and are divided into 160 frequencies on this frequency, and the frequency that two radio-frequency modules use can dispose;
Described processor module adopts high-performance microprocessor, is used for radio-frequency (RF) receiving and transmission module 1 and carries out exchanges data with radio-frequency (RF) receiving and transmission module 2.Some a plurality of label informations with radio-frequency (RF) receiving and transmission module 1 is received send to read write line by radio-frequency (RF) receiving and transmission module 2; The information of the read write line that radio-frequency (RF) receiving and transmission module 2 is received sends to corresponding label by radio-frequency (RF) receiving and transmission module 1.
As shown in Figure 2, label is placed in the metal framework.The application process of present embodiment is such: put into external antenna in advance in the metal framework of shielding.
After the tamper sensing detection module of repeater detects the magnetic field that read write line sends, repeater enters operating state, radio-frequency (RF) receiving and transmission module 1 activated and is in reception every 1 second integral multiple time intercepts state, receive the data message that shielding metal framework inner label sends, the time of intercepting is fixed, and gets 1/1000～1/100 of the intermittent time.Because the label transmitting power in the shielding space is less, generally at-10dbm, so label adopts two to four frequencies.When radio-frequency (RF) receiving and transmission module 1 is received label information, activate radio-frequency (RF) receiving and transmission module 2 and send label information to read write line, after radio-frequency (RF) receiving and transmission module 2 is received the information that read write line returns, carry out exchanges data with radio-frequency module 1, radio-frequency (RF) receiving and transmission module 1 will send to corresponding label from the information that radio-frequency (RF) receiving and transmission module 2 is received, thus the identifying of finishing.When radio-frequency (RF) receiving and transmission module 2 and the end of read write line swap data, radio-frequency (RF) receiving and transmission module 2 enters power-down state.
In case magnetic field disappears, repeater is equivalent to be removed, and repeater sends warning to read write line, and as not receiving the warning confirmation signal of read write line, repeater will continue to report to the police.Receive the warning confirmation signal from read write line, repeater enters wait state, no longer activates two radio-frequency (RF) receiving and transmission module, and after the tamper sensing device detected magnetic field once more, repeater entered operating state once more.
Present embodiment can also be applied to the occasion of label and read write line apart from each other, only needs that repeater is arranged on the scope that label and read write line can both cover and gets final product.And the occasion that the course of work and label are placed in the metal framework is identical.
Above-described embodiment is a more preferably embodiment of the utility model, and common variation that those skilled in the art carry out in the utility model scheme scope and replacement all should be included in the protection range of the present utility model.
Claims (3)
1. active radio-frequency (RF) identification repeater, comprise drive circuit, and the processor of the adjacent side of the power supply that is connected with drive circuit respectively, power supply, the tamper sensor that is used to detect magnetic field of the adjacent side of processor, processor neighbour first transceiver then, second transceiver of the adjacent side of first transceiver.
2. a kind of active radio-frequency (RF) identification repeater as claimed in claim 1, it is characterized in that: first transceiver is provided with external antenna.
3. a kind of active radio-frequency (RF) identification repeater as claimed in claim 1, it is characterized in that: second transceiver is provided with built-in aerial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205427890U CN201830257U (en) | 2010-09-26 | 2010-09-26 | Active radio frequency identification repeater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205427890U CN201830257U (en) | 2010-09-26 | 2010-09-26 | Active radio frequency identification repeater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201830257U true CN201830257U (en) | 2011-05-11 |
Family
ID=43968770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205427890U Expired - Lifetime CN201830257U (en) | 2010-09-26 | 2010-09-26 | Active radio frequency identification repeater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201830257U (en) |
-
2010
- 2010-09-26 CN CN2010205427890U patent/CN201830257U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110511 |
|
| CX01 | Expiry of patent term |