CN108614236A - A kind of active radio frequency identification indoor locating system - Google Patents
A kind of active radio frequency identification indoor locating system Download PDFInfo
- Publication number
- CN108614236A CN108614236A CN201611143776.4A CN201611143776A CN108614236A CN 108614236 A CN108614236 A CN 108614236A CN 201611143776 A CN201611143776 A CN 201611143776A CN 108614236 A CN108614236 A CN 108614236A
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- China
- Prior art keywords
- reader
- module
- radio frequency
- ultrasonic wave
- frequency identification
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The present invention provides active radio frequency identification indoor locating system,Including main reader,At least three from reader and being set to by the electronic tag on positioning object,The main reader includes the first control module,And the first radio frequency identification module being respectively connected with the first control module,First ultrasonic wave transmitting module,Temperature detecting module and RS232 modules,It is described to include the second control module from reader,And the second radio frequency identification module and the second ultrasonic wave transmitting module being respectively connected with the second control module,The electronic tag includes third control module,And the third radio frequency identification module and ultrasonic wave receiving module being respectively connected with third control module,Wherein,Described three from reader be respectively first from reader,Second from reader and third from reader,Wherein,Using the main reader as origin,Described first from reader,Second is respectively arranged at from reader in the reference axis of three-dimensional system of coordinate from reader and third.
Description
Technical field
The present invention relates to positioning systems, and indoor locating system is identified more particularly, to active radio frequency.
Background technology
With the raising of production and living intelligence degree, the perception of indoor location is become more and more important.Existing skill
There are multiple indoor location technologies in art, for example, radio frequency identification, ultrasonic ranging, ultra wide band, infrared ray and bluetooth etc..But
Existing indoor positioning technologies are difficult to have both high-precision and low-power consumption.
Invention content
To overcome drawbacks described above, the present invention to provide active radio frequency identification indoor locating system, including main reader, at least three
A from reader and to be set to by the electronic tag on positioning object, the main reader includes the first control module, the first radio frequency
Identification module, the first ultrasonic wave transmitting module, temperature detecting module and RS232 modules, first radio frequency identification module, first
Ultrasonic wave transmitting module, temperature detecting module and RS232 modules are connected with first control module respectively, described from reader
Including the second control module, the second radio frequency identification module and the second ultrasonic wave transmitting module, second radio frequency identification module and
Second ultrasonic wave transmitting module is connected with second control module respectively, and the electronic tag includes third control module,
Three radio frequency identification modules and ultrasonic wave receiving module, the third radio frequency identification module and ultrasonic wave receiving module respectively with it is described
Third control module is connected, wherein described three from reader be respectively first from reader, second from reader and third from
Reader, wherein using the main reader as origin, described first from reader, second from reader and third from reader
It is respectively arranged in the reference axis of three-dimensional system of coordinate.
Further, the emission element of the first ultrasonic wave transmitting module and the second ultrasonic wave transmitting module is loudspeaker
.
Further, the receiving part of the ultrasonic wave receiving module is omni-directional microphone.
Further, the interface of the RS232 modules is DB9.
The beneficial effects of the invention are as follows：By using main reader, it is sharp from the mode of reader and electronic tag, and simultaneously
With radio frequency identification module and ultrasonic wave module, by two modules in the reaching time-difference of signal receiving end, it is accurate fixed to realize
Position, and there is lower power consumption, meanwhile, realize that easy, simple in structure, hardware requirement is low, at low cost.
Description of the drawings
Fig. 1 is the structure chart of active radio frequency identification indoor locating system of the present invention；
Fig. 2 is the structure chart of the main reader of the present invention；
Fig. 3 is structure chart of the present invention from reader；
Fig. 4 is the structure chart of electronic tag of the present invention；
Fig. 5 is the structure chart of the active radio frequency identification indoor locating system under an embodiment of the present invention.
Specific implementation mode
Below in conjunction with the accompanying drawings, technical scheme of the present invention is described in detail.
The active radio frequency of the application identifies indoor locating system, including main reader, at least three are from reader and setting
In by the electronic tag on positioning object, the main reader includes the first control module, the first radio frequency identification module, the first ultrasound
Wave transmitting module, temperature detecting module and RS232 modules, first radio frequency identification module, the first ultrasonic wave transmitting module, temperature
Degree detection module and RS232 modules be connected respectively with first control module, it is described from reader including the second control module,
Second radio frequency identification module and the second ultrasonic wave transmitting module, second radio frequency identification module and the second ultrasonic wave transmitting module
It is connected respectively with second control module, the electronic tag includes third control module, third radio frequency identification module and surpasses
Acoustic receiver module, the third radio frequency identification module and ultrasonic wave receiving module are connected with the third control module respectively,
Wherein, described three from reader be respectively first from reader, second from reader and third from reader, wherein with institute
It is origin to state main reader, and described first is respectively arranged at three-dimensional seat from reader and third from reader, second from reader
In the reference axis for marking system.
By using main reader, from the mode of reader and electronic tag, and utilize radio frequency identification module and super simultaneously
Sound wave module is realized and is accurately positioned by two modules in the reaching time-difference of signal receiving end, and has lower work(
Consumption, meanwhile, realize that easy, simple in structure, hardware requirement is low, at low cost.
In this application, active radio frequency identify indoor locating system, as shown in Figure 1, including main reader, at least three from
Reader and electronic tag.Wherein, main reader and radio frequency identification (RFID, Radio can be carried out from reader
Frequency Identification) communication emits with ultrasonic wave, is set on anchor point from reader, specifically, master reads
It is unique to read device, it is identical from the quantity of reader and the quantity of anchor point.Electronic tag be used for reader carry out RFID communication and
The ultrasonic signal of reader transmitting is received, electronic tag is set to by positioning object, can by electronic tag by positioning object
It realizes positioning, when being multiple by positioning object, an electronic tag is respectively provided on positioning object each.Preferably, reader and
Air line distance between electronic tag is less than 10m.
In this application, as shown in Fig. 2, main reader includes the first control module, the first radio frequency identification module, the first surpasses
Sound wave transmitting module, temperature detecting module and RS232 modules, first radio frequency identification module, the first ultrasonic wave transmitting module,
Temperature detecting module and RS232 modules are connected with first control module respectively.First radio frequency identification module is for outwardly
Rf data is sent, and receives extraneous incoming rf data.First ultrasonic wave transmitting module is for emitting ultrasonic wave to electricity
Subtab.Temperature detecting module is for detecting environment temperature.RS232 modules are for uploading data to host computer.First control mould
Block is used to control the work schedule of above-mentioned modules.
In this application, as shown in figure 3, including the second control module, the second radio frequency identification module and second from reader
Ultrasonic wave transmitting module, second radio frequency identification module and the second ultrasonic wave transmitting module respectively with second control module
It is connected.Second radio frequency identification module is for outwardly sending rf data, and the extraneous incoming rf data of reception.The second surpass
Sound wave transmitting module is for emitting ultrasonic wave to electronic tag.When second control module is used to control the work of above-mentioned modules
Sequence.
In this application, as shown in figure 4, electronic tag includes third control module, third radio frequency identification module and ultrasound
Wave receiving module, the third radio frequency identification module and ultrasonic wave receiving module are connected with the third control module respectively.The
Three radio frequency identification modules are for outwardly sending rf data, and the extraneous incoming rf data of reception.Ultrasonic wave receives mould
The ultrasonic wave that block is used to receive main reader and from reader transmitting come.Third control module is for controlling above-mentioned modules
Work schedule.
Preferably, in this application, the emission element of the first ultrasonic wave transmitting module and the second ultrasonic wave transmitting module is
Loudspeaker.The receiving part of ultrasonic wave receiving module is omni-directional microphone.The interface of RS232 modules is DB9.
The application is huge using 6 orders of magnitude possessed by RF radio and the aerial spread speed of ultrasonic wave
Difference so that the time difference that two class signals are propagated in air can be used as ultrasonic wave from reader (including main reader and from
Reader) propagation time for arriving electronic tag, in conjunction with the spread speed of ultrasonic wave, can get reader to electronic tag away from
From, and then by solving range equation, the spatial position coordinate of electronic tag is can get, i.e., by the position of positioning object.
In a kind of specific embodiment, as shown in figure 5, active radio frequency identification indoor locating system includes a main reading
Device and three from reader, described three from reader be respectively first from reader, second from reader and third from reading
Device, wherein using the main reader as origin, main reader be set to positioning place coordinate system origin on, described first from
Reader, second are respectively arranged at from reader in the reference axis of three-dimensional system of coordinate from reader and third, specifically, by first
It is set in X-axis from reader, second is set to from reader in Y-axis, third is set to from reader on Z axis.And it can
It is added according to actual needs more from reader, the application does not limit.
Specifically, the method that the active radio frequency identification indoor locating system in the application realizes positioning, including：
Step 1：Main reader periodically sends the radio frequency broadcasting signal of Reader ID and rf data；
Step 2：It whether there is electronic tag in main reader detection radiofrequency signal coverage area, step 3 gone to if having,
Step 1 is gone to if nothing；
Step 3：After electronic tag receives radio frequency broadcasting signal, one tag ID of main reader and rf data are replied to
Response bag；
Step 4：After main reader receives response bag, while sending the radiofrequency signal of Reader ID and rf data and surpassing
Sound wave；
Step 5：Timer when electronic tag receives radiofrequency signal inside unlatching stops meter when receiving ultrasonic wave
When, the propagation time of the count value of timer as ultrasonic wave from reader to label；
Step 6：Main reader activate each slave reader from reader, being activated successively and meanwhile send Reader ID and
The radiofrequency signal and ultrasonic wave of rf data；
Step 7：Electronic tag collects ultrasonic wave from when each propagation from reader to label in the way of step 5
Between；
Step 8：Electronic tag detects whether to have collected each ultrasonic propagation time from reader to label, if collecting
It is complete, step 9 is gone to, step 6 is otherwise gone to；
Step 9：The ultrasonic propagation time being collected into is uploaded to main reader by electronic tag, and main reader collects itself
The temperature data uploading of collection is calculated the 3 d space coordinate of electronic tag by host computer to host computer.
Preferably, the main reader of the application, from reader and electronic tag include respectively a power module, and by each power supply
Module is independently powered.
In the active radio frequency identification indoor locating system of the application, radio communication frequency is 443MHz, and ultrasonic frequency is
21KHz.Radio communication is based on ISO/IEC18000-7 Protocol Designs.In addition, electronic tag and reader have different electronics
Number, and the ID of electronic tag and reader has global uniqueness.
Using low consumption low voltage microcontroller MSP430G2553, microcontroller passes through each control module in this system
Four line SPI interfaces are communicated with radio frequency identification module, control the transmitting-receiving of radiofrequency signal, safeguard penetrating for reader and electronic tag
Frequency communicates.Reader exports the PWM of fixed cycle by single-chip processor i/o mouth, and loudspeaker is driven after audio-frequency amplifier LM386 amplifications
Transmitting ultrasonic wave.The ultrasonic signal that electronic tag end is received by full directing microphone, by LF347 amplifiers amplification and
After filtering, sine wave is converted to by square wave by LM393, is then input to the I/O mouths of microcontroller.Main reader passes through I/O mouthfuls
It controls one-line temperature sensor DS18B20 and reads ambient temperature value.Main reader is by UART interface via MAX232 chips
Send data to host computer.
The technical problem that present application addresses location technology precision existing in the prior art is low, power consumption is big, by using
Main reader, from the mode of reader and electronic tag, and simultaneously utilize radio frequency identification module and ultrasonic wave module, pass through two
Module is realized and is accurately positioned in the reaching time-difference of signal receiving end, and has lower power consumption, meanwhile, it is simple in structure, hard
Part requires low, at low cost.
Claims (4)
1. a kind of active radio frequency identifies indoor locating system, which is characterized in that including main reader, at least three from reader and
It is set to by the electronic tag on positioning object, the main reader includes the first control module, the first radio frequency identification module, first
Ultrasonic wave transmitting module, temperature detecting module and RS232 modules, first radio frequency identification module, the first ultrasonic wave emit mould
Block, temperature detecting module and RS232 modules are connected with first control module respectively, described to include the second control from reader
Module, the second radio frequency identification module and the second ultrasonic wave transmitting module, second radio frequency identification module and the second ultrasonic wave hair
It penetrates module to be respectively connected with second control module, the electronic tag includes third control module, third radio frequency identification mould
Block and ultrasonic wave receiving module, the third radio frequency identification module and ultrasonic wave receiving module respectively with the third control module
Be connected, wherein described three from reader be respectively first from reader, second from reader and third from reader, wherein
Using the main reader as origin, described first is respectively arranged at three from reader and third from reader, second from reader
In the reference axis of dimension coordinate system.
2. active radio frequency as described in claim 1 identifies indoor locating system, which is characterized in that the first ultrasonic wave transmitting
The emission element of module and the second ultrasonic wave transmitting module is loudspeaker.
3. active radio frequency as described in claim 1 identifies indoor locating system, which is characterized in that the ultrasonic wave receiving module
Receiving part be omni-directional microphone.
4. active radio frequency as described in claim 1 identifies indoor locating system, which is characterized in that the RS232 modules connect
Mouth is DB9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611143776.4A CN108614236A (en) | 2016-12-13 | 2016-12-13 | A kind of active radio frequency identification indoor locating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611143776.4A CN108614236A (en) | 2016-12-13 | 2016-12-13 | A kind of active radio frequency identification indoor locating system |
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| Publication Number | Publication Date |
|---|---|
| CN108614236A true CN108614236A (en) | 2018-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611143776.4A Pending CN108614236A (en) | 2016-12-13 | 2016-12-13 | A kind of active radio frequency identification indoor locating system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109785565A (en) * | 2018-12-28 | 2019-05-21 | 禅境科技股份有限公司 | A kind of method and its system for realizing emphasis site management based on technology of Internet of things |
| CN113384868A (en) * | 2021-06-25 | 2021-09-14 | 歌尔光学科技有限公司 | Hand model establishing method and device, electronic equipment and storage medium |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204129215U (en) * | 2014-10-28 | 2015-01-28 | 西南交通大学 | Active radio frequency identification indoor locating system |
-
2016
- 2016-12-13 CN CN201611143776.4A patent/CN108614236A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204129215U (en) * | 2014-10-28 | 2015-01-28 | 西南交通大学 | Active radio frequency identification indoor locating system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109785565A (en) * | 2018-12-28 | 2019-05-21 | 禅境科技股份有限公司 | A kind of method and its system for realizing emphasis site management based on technology of Internet of things |
| CN113384868A (en) * | 2021-06-25 | 2021-09-14 | 歌尔光学科技有限公司 | Hand model establishing method and device, electronic equipment and storage medium |
| CN113384868B (en) * | 2021-06-25 | 2023-05-05 | 歌尔科技有限公司 | Hand model building method and device, electronic equipment and storage medium |
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Application publication date: 20181002 |
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