CN102646207A - Positioning system of RFID (Radio Frequency Identification) device based on low-frequency triggering - Google Patents
Positioning system of RFID (Radio Frequency Identification) device based on low-frequency triggering Download PDFInfo
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- CN102646207A CN102646207A CN2012100798563A CN201210079856A CN102646207A CN 102646207 A CN102646207 A CN 102646207A CN 2012100798563 A CN2012100798563 A CN 2012100798563A CN 201210079856 A CN201210079856 A CN 201210079856A CN 102646207 A CN102646207 A CN 102646207A
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- electronic tag
- chip microcomputer
- positioning system
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Abstract
The invention aims at providing a positioning system of an RFID (Radio Frequency Identification) device based on low-frequency triggering, which is accurate in recognition, high in security and flexible and convenient in use. The positioning system comprises an electronic label and a positioning detector, wherein the electronic label comprises an induction circuit which is connected with a single chip microcomputer of the electronic label; the single chip microcomputer of the electronic label is connected with an electronic label wireless module, and the frequency range used by an induction circuit is 120KHz-135KHz; the positioning detector comprises a triggering circuit which is connected with a single chip microcomputer of the positioning detector; and the frequency of the triggering circuit is same as that used by the induction circuit of the electronic label. The positioning system provided by the invention is accurate in recognition, convenient to install, wide in application range and high in security.
Description
Technical field
The present invention relates to the RFID field of radio frequency identification.
Background technology
At present domesticly basically all adopt wireless receiving signal intensity indication (RSSI) to judge about the wireless location product; Owing to receive aerial undesired signal, body of wall or human body to stop cause influences such as signal reflex refraction; The resultant error that this mode obtains is very big, is difficult to confirm the position of measurand.Especially like building complex structures such as hospital, banks, security requires higher place again, and existing radio positioner often can not be satisfied the demand.
Summary of the invention
It is accurate that technical matters to be solved by this invention provides a kind of identification, the positioning system of the RFID device that triggers based on low frequency safe and flexible and convenient to use, and for this reason, the present invention adopts following technical scheme:
Said system comprises electronic tag, position locator; Said electronic tag comprises sensor circuit; Said sensor circuit links to each other with the electronic tag single-chip microcomputer, and said electronic tag single-chip microcomputer links to each other with the electronic tag wireless module, and the frequency range that said sensor circuit uses is: 120KHZ ~ 135KHZ; Said position locator comprises trigger circuit, and said trigger circuit link to each other with the position locator single-chip microcomputer, and said trigger circuit are identical with the frequency that the sensor circuit of electronic tag uses.
Through above technical scheme, the present invention discerns accurately, and easy for installation, the scope of application is extensive, and is safe.
Description of drawings
Fig. 1 is the Electronic Tag Structure synoptic diagram of embodiment provided by the present invention.
Fig. 2 is the position locator structural representation of embodiment provided by the present invention.
Embodiment
The present invention includes electronic tag, position locator; Said electronic tag comprises sensor circuit; Said sensor circuit links to each other with the electronic tag single-chip microcomputer, and said electronic tag single-chip microcomputer links to each other with the electronic tag wireless module, and the frequency range that said sensor circuit uses is: 120KHZ ~ 135KHZ; Said position locator comprises trigger circuit, and said trigger circuit link to each other with the position locator single-chip microcomputer, and said trigger circuit are identical with the frequency that the sensor circuit of electronic tag uses.
The present invention also comprises main frame, and the host services software that the information that is provided with in the said main frame gathers has information interaction between the wireless module of said position locator or intrasystem other wireless modules and the host services software.
Said position locator single-chip microcomputer links to each other with the position locator wireless module.
Said electronic tag uses button cell to supply power.
On the said electronic tag, sensor circuit links to each other with the electronic tag single-chip microcomputer, and said sensor circuit has low frequency signal identification and separates code output function; The passive reception low frequency of said electronic tag single-chip microcomputer decoded signal, the decoded signal that receives when single-chip microcomputer meets specific format and can wake electronic tag up;
Sensor circuit in the said electronic tag comprises electromagnetic induction coil, and said electromagnetic induction coil is more than one and form certain angle mutually.
Below describe through specific embodiment:
With reference to accompanying drawing.The present invention includes electronic tag, position locator, as shown in Figure 1, said electronic tag comprises sensor circuit; Said sensor circuit links to each other with the electronic tag single-chip microcomputer, and said electronic tag single-chip microcomputer links to each other with the electronic tag wireless module, and the frequency range that said sensor circuit uses is: 120KHZ ~ 135KHZ; In the present embodiment, adopt 125KHZ, the RFID of this frequency; Triggering distance approximately is 0 ~ 4m under varying strength, signal stabilization, and penetrability is strong; Not influenced by human body, brick wall etc., can remedy the problem that present positioning system signal intensity receives obstacles easily, needing to be suitable for very much pinpoint occasion.
On the said electronic tag, sensor circuit links to each other with the electronic tag single-chip microcomputer, and said sensor circuit has low frequency signal identification and separates code output function; The passive reception low frequency of said electronic tag single-chip microcomputer decoded signal.Said electronic tag uses button cell to supply power.
Said electronic tag single-chip microcomputer and electronic tag wireless module are in dormant state at ordinary times, have only the transmission of needs data or induced circuit to wake Shi Caihui work up, so power consumption is extremely low, can use button cell to supply power.
Specifically; As the equipment that carries electronic tag or personnel when position locator regional is installed; The address information that detector sends that is positioned the sensor circuit of electronic tag activates; The electronic tag single-chip microcomputer parses the address information that position locator is sent, and through wireless module this information and self id is sent to the wireless module of position locator or other wireless devices that system comprises jointly, and the host services software that finally is aggregated into main frame is handled.
Sensor circuit in the said electronic tag comprises electromagnetic induction coil, and said electromagnetic induction coil is more than one and forms certain angle mutually.In the present embodiment, said electromagnetic induction coil is two and orthogonal, and the three-dimensional inductive coil of so common formation can make electronic tag be in mobile status following time, and induction range and sensitivity increase greatly.
The position locator of present embodiment comprises trigger circuit, and said trigger circuit link to each other with the position locator single-chip microcomputer, and said trigger circuit are identical with the frequency that the sensor circuit of electronic tag uses.Also be 125KHZ in the present embodiment.
Said position locator single-chip microcomputer links to each other with the position locator wireless module.
The position locator of present embodiment can be located at main thoroughfare, gateway and critical area; Said trigger circuit comprise chip for driving TC4422 and TC4421 and LC resonant circuit; Said position locator single-chip microcomputer carries the 125KHz signal of address code through the continual transmission of IO pin; This signal amplifies through chip for driving TC4422 and TC4421 bridge circuit, and converts the electromagnetic wave signal of 125KHz to through the LC resonant circuit; LC resonant circuit center oscillation frequency is 125KHz.
The wireless module of said position locator is in real-time accepting state, sends data through the data line that links to each other with position locator to system service software immediately in case receive the valid data that come from the electronic tag wireless module.In fact, this wireless module can be arranged with the remainder branch of position locator, as long as can obtain the information that the electronic tag wireless module sends.
The present invention also comprises main frame, and the host services software that the information that is provided with in the said main frame gathers has information interaction between the wireless module of said position locator or intrasystem other wireless modules and the host services software.
Present embodiment can use in the wireless security system of the neonate of hospital; When using; Position locator is located at main thoroughfare, gateway and the critical area of hospital; Said position locator is constantly sent the 125KHZ signal that carries address code; The wireless module of said position locator is in real-time accepting state, when the equipment that carries electronic tag or personnel when position locator regional is installed, the sensor circuit in the aforementioned 125KHZ signal triggering electronic tag; Single-chip microcomputer in the electronic tag parses this address code and sends to the wireless module of position locator or other radio receivers that system comprises jointly with the self ID of electronic tag, and finally is aggregated into host services software and handles.
The frequency range of wireless module described in the present embodiment is 240MHz-930MHz; The wireless module radio frequency chip of present embodiment is selected the Si4421 chip for use, and its wireless signal transmission power is+13DBm ~-8DBm is configurable.
Design considerations of the present invention:
" SI4431 wireless chip principle "
" MCP2030 chip principle "
" MSP430 Fundamentals of Mono-Chip Computers "
" radiotelegraphy principle ".
Claims (6)
1. the positioning system of the RFID device that triggers based on low frequency; It is characterized in that said system comprises electronic tag, position locator; Said electronic tag comprises sensor circuit; Said sensor circuit links to each other with the electronic tag single-chip microcomputer, and said electronic tag single-chip microcomputer links to each other with the electronic tag wireless module, and the frequency range that said sensor circuit uses is: 120KHZ ~ 135KHZ; Said position locator comprises trigger circuit, and said trigger circuit link to each other with the position locator single-chip microcomputer, and said trigger circuit are identical with the frequency that the sensor circuit of electronic tag uses.
2. the positioning system of the RFID device that triggers based on low frequency according to claim 1 is characterized in that said position locator single-chip microcomputer links to each other with the position locator wireless module.
3. the positioning system of the RFID device that triggers based on low frequency according to claim 1; It is characterized in that said system also comprises main frame; The host services software that the information that is provided with in the said main frame gathers has information interaction between the wireless module of said position locator or intrasystem other wireless modules and the host services software.
4. the positioning system of the RFID device that triggers based on low frequency according to claim 1 is characterized in that said electronic tag uses button cell to supply power.
5. the positioning system of the RFID device that triggers based on low frequency according to claim 1 is characterized in that on the said electronic tag that sensor circuit links to each other with the electronic tag single-chip microcomputer, and said sensor circuit has low frequency signal identification and separates code output function; The passive reception low frequency of said electronic tag single-chip microcomputer decoded signal, the decoded signal that receives when single-chip microcomputer meets specific format and can wake electronic tag up.
6. the positioning system of the RFID device that triggers based on low frequency according to claim 1 is characterized in that the sensor circuit in the said electronic tag comprises electromagnetic induction coil, and said electromagnetic induction coil is more than one and form certain angle mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100798563A CN102646207A (en) | 2012-03-23 | 2012-03-23 | Positioning system of RFID (Radio Frequency Identification) device based on low-frequency triggering |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100798563A CN102646207A (en) | 2012-03-23 | 2012-03-23 | Positioning system of RFID (Radio Frequency Identification) device based on low-frequency triggering |
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| CN2012100798563A Pending CN102646207A (en) | 2012-03-23 | 2012-03-23 | Positioning system of RFID (Radio Frequency Identification) device based on low-frequency triggering |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675876A (en) * | 2012-09-07 | 2014-03-26 | 祝怀月 | Vehicle positioning system |
| CN104049240A (en) * | 2014-06-13 | 2014-09-17 | 成都阿艾夫通信有限公司 | Small-range accurate locating method of low-frequency exciters |
| CN104581466A (en) * | 2014-12-15 | 2015-04-29 | 恩平市恩宝电子有限公司 | Wireless microphone system capable of automatically adjusting emission power |
| CN109657771A (en) * | 2018-11-02 | 2019-04-19 | 陕西斯达防爆安全科技股份有限公司 | A kind of wireless telecommunications electronic tag |
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| CN201611478U (en) * | 2010-03-25 | 2010-10-20 | 汉王科技股份有限公司 | Electronic whiteboard |
| CN101901366A (en) * | 2010-04-29 | 2010-12-01 | 苏州世纪泰鼎电子科技有限公司 | Intelligent RFID tag used for soaking disinfection type surgical instrument |
| CN102184445A (en) * | 2011-05-12 | 2011-09-14 | 广州天绎智能科技有限公司 | Electronic tag awakening method and electronic tag |
| CN202533977U (en) * | 2012-03-23 | 2012-11-14 | 浙江瑞瀛网络科技有限公司 | Radio frequency identification device (FRID) positioning system capable of being triggered based on low frequency |
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| US20070262157A1 (en) * | 2006-05-11 | 2007-11-15 | Savi Technology, Inc. | Method and apparatus for coordinating communications between a tag and a reader |
| CN101046843A (en) * | 2007-04-30 | 2007-10-03 | 郭岳衡 | Radio frequency recognition positiming method and its system |
| CN201611478U (en) * | 2010-03-25 | 2010-10-20 | 汉王科技股份有限公司 | Electronic whiteboard |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675876A (en) * | 2012-09-07 | 2014-03-26 | 祝怀月 | Vehicle positioning system |
| CN104049240A (en) * | 2014-06-13 | 2014-09-17 | 成都阿艾夫通信有限公司 | Small-range accurate locating method of low-frequency exciters |
| CN104581466A (en) * | 2014-12-15 | 2015-04-29 | 恩平市恩宝电子有限公司 | Wireless microphone system capable of automatically adjusting emission power |
| CN104581466B (en) * | 2014-12-15 | 2018-04-17 | 恩平市恩宝电子有限公司 | A kind of wireless microphone system for automatically adjusting transmission power |
| CN109657771A (en) * | 2018-11-02 | 2019-04-19 | 陕西斯达防爆安全科技股份有限公司 | A kind of wireless telecommunications electronic tag |
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Application publication date: 20120822 |