CN104331727A - Radio frequency identification location system and method thereof - Google Patents
Radio frequency identification location system and method thereof Download PDFInfo
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- CN104331727A CN104331727A CN201410689272.7A CN201410689272A CN104331727A CN 104331727 A CN104331727 A CN 104331727A CN 201410689272 A CN201410689272 A CN 201410689272A CN 104331727 A CN104331727 A CN 104331727A
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Abstract
The invention discloses a radio frequency identification location system, and the radio frequency identification location system comprises at least one reader-writer used for generating and sending the wakeup signal and location signal; a location label used for receiving the wakeup signal and returning the ID serial number of the location label to the corresponding reader-writer; the location label is further used for receiving the location signal and returning and sending the location signal to the reader-writer; the reader-writer is further used for recording the time node of sending the location signal to the location label and the time node of the reader-writer of receiving the location signal returned by the location label; an upper computer connected to the reader-writer and used for sending the location start command to the reader-writer; the upper computer is further used for calculating the distance between the reader-writer and the location label according to the location signal sending time node recorded by the reader-writer and location signal returning time node returned by the location label and recorded by the reader-writer. The radio frequency identification location method is also disclosed. The radio frequency identification location system and the method are high in location precision, resistant in interference, simple and easy in use and low in cost.
Description
Technical field
The present invention relates to RFID label tag field of locating technology, be specifically related to a kind of radio-frequency (RF) identification positioning system and method thereof.
Background technology
Radio-frequency (RF) identification (Radio Frequency Identification, RFID) be a kind of wireless communication technology, related data can be read and write by radio signals identification specific objective, and without the need to setting up machinery or optical contact between recognition system and specific objective.RFID is widely used in present life as the important identification layer of Internet of Things.Modern logistics warehouse management, personal management, not only needs recognition object in the application such as parking lot, and needs the real-time position information knowing object.
Real-time positioning system (Real Time Location Systems, RTLS) is a kind of radiolocation means based on signal, can adopt active, or passive induction type.Wherein the active AOA(angle of arrival that is divided into is located) and difference TDOA(time of arrival location), TOA(time of arrival), TW-TOF (two-way flight time), NFER(near field electromagnetic positioning) etc., as UWB location, the feature of this technological means is that positioning precision is high, is not easily disturbed; Passive induction type adopts and carries out location compute based on the method for signal intensity, is mainly RSSI (signal is strong and weak) etc., as WIFI, RFID, Zigbee etc., this locator meams is easily subject to water, the impact of the barriers such as metal object, thus there is deviation, precision is mutually relatively low.
A kind of underground garage positioning system based on RFID technology, application number is 200710303990.6, this positioning system reads with reference to RFID label, the relevant information of target RFID label and the power of radiofrequency signal by RFID card reader, then realizes the contact with PC machine by switch.The location resolution module be stored in PC machine is analyzed the information received, and after contrasting, determines whether the parking stall in garage has parked vehicle with the difference of the strong and weak parameter of adjacent four position radiofrequency signals.But because RSSI (signal is strong and weak) blocks by metal object or human body, the impacts such as automobile non-browning glass quality and tag battery voltage, there is false situation in RSSI value, thus positioning precision is not high, or situation about cannot locate.
Therefore, for RFID label tag, need a positioning precision high, strong anti-interference, be simple and easy to realize method with low cost, realize the real-time location of RFID label tag.
Summary of the invention
The object of the present invention is to provide a kind of radio-frequency (RF) identification positioning system and method thereof, positioning precision is high, anti-interference, be simple and easy to use, only need to increase a radio frequency in existing RFID label tag and send chip module, the positioning function of RFID label tag can be realized, with low cost.
In order to achieve the above object, the present invention is achieved through the following technical solutions: a kind of radio-frequency (RF) identification positioning system, is characterized in, comprises:
At least one read write line, for generation of and send wake-up signal and positioning signal;
Positioning label, is back to corresponding read write line by the ID of positioning label numbering after receiving wake-up signal that read write line sends; The positioning signal that positioning label also sends for receiving read write line also returns to this read write line again and sends this positioning signal;
Described read write line also sends the timing node of positioning signal for recording it to positioning label, and this read write line receives the timing node of the positioning signal that positioning label returns;
Host computer, is connected with described read write line, for sending location initiation command to read write line; The timing node of the positioning signal that host computer also returns for the reception positioning label of the timing node that sends according to the positioning signal of read write line record and read write line record, calculates the distance between read write line and positioning label.
Described read write line comprises controller, is connected with described host computer, for receive host computer send location initiation command after produce wake-up signal;
Controller also for generation of positioning signal, and processes the positioning signal that positioning label returns;
The first transceiving chip be connected with described controller, for receiving the wake-up signal that controller produces, and sends this wake-up signal to positioning label;
First transceiving chip also for receiving the positioning signal that controller produces, and sends this positioning signal to positioning label;
The receiving chip be connected with described controller, wakes confirmation signal up for what receive that positioning label returns;
Receiving chip is also for receiving the positioning signal that positioning label returns, and the positioning signal this returned is sent to controller.
Described positioning label comprises microcontroller and the second transceiving chip be connected with microcontroller respectively, sends chip;
The output terminal of the second described transceiving chip is connected with the input end of described transmission chip;
Described microcontroller is for configuring the second transceiving chip, sending chip;
The wake-up signal that the second described transceiving chip sends for receiving the first transceiving chip, and is forwarded to microcontroller, and microcontroller produces according to wake-up signal and wakes confirmation signal to be back to read write line controller through sending chip up;
This positioning signal also for receiving the positioning signal that the first transceiving chip sends, and is back to the controller of read write line by the second described transceiving chip through sending chip.
Radio-frequency (RF) identification positioning system comprises location modifying label further, and for revising the error because temperature variation causes, the structure of described location modifying label is identical with the structure of described positioning label;
Known and position, the position of described location modifying label immobilizes.
The first described transceiving chip is identical with the aerial radio frequency signal frequency point of the second transceiving chip;
Described receiving chip is identical with the aerial radio frequency signal frequency point sending chip; And
The first described transceiving chip is different from the aerial radio frequency signal frequency point of receiving chip.
The positioning signal that described controller produces comprises a synchronous head and position pulse, and the time interval between described adjacent positioned pulse is period of change.
Described controller comprises many cluster counters, is respectively used to start timing at the rising edge of position pulse when controller produces positioning signal, and when controller receives the positioning signal that positioning label returns, the rising edge of corresponding position pulse stops timing;
Timing node is reported host computer by described counter.
A kind of frequency recognition positiming method, is characterized in that, comprise following steps:
Each read write line in S1, radio-frequency (RF) identification positioning system starts positioning flow after receiving the location initiation command of host computer transmission;
After the positioning flow of all read write lines in S2, radio-frequency (RF) identification positioning system is finished, host computer calculates the distance between each read write line and positioning label;
S3, host computer produce circular arc point of crossing to the distance between each read write line and positioning label, and host computer determines the coordinate position of positioning label according to circular arc point of crossing, completes location.
Taking a step forward of step S1 comprises the step S0 of the described positioning label that makes zero;
S0.1, at room temperature, by read write line near positioning label;
S0.2, host computer send positioning command to read write line, and read write line completes one-time positioning flow process;
S0.3, host computer compute location signal send and the mistiming received;
Number corresponding with the ID of positioning label as the constant time lag of positioning label after mistiming is deducted the constant time lag of read write line by S0.4, host computer; Wherein
The constant time lag T of read write line
dcalculation procedure comprise:
First transceiving chip of read write line and receiving chip are configured to same channel, and read write line is positioned in screened room;
First transceiving chip sends positioning signal, the counter records transmitting time node of controller;
Receiving chip receives positioning signal, the counter records time of reception node of controller;
Controller goes out the constant time lag of read write line according to transmitting time node and time of reception node calculate.
Described positioning flow comprises:
The controller of A1, read write line produces wake-up signal, and be sent to the second transceiving chip of positioning label through the first transceiving chip, the second transceiving chip wakes the microcontroller in dormancy up after receiving wake-up signal;
A2, microcontroller wake the receiving chip of ID numbering to read write line of confirmation signal and positioning label up by sending chip transmission;
A3, receiving chip will wake confirmation signal up and be forwarded to controller, and controller produces and sends positioning signal to the first transceiving chip, the counter records transmitting time node of controller, and transmitting time node is reported to host computer by controller;
Positioning signal is sent to the second transceiving chip of positioning label by A4, the first transceiving chip;
After A5, the second transceiving chip receive positioning signal, export the transmission chip of the positioning signal after demodulation to positioning label;
Positioning signal is sent to the receiving chip of read write line by A6, transmission chip;
A7, receiving chip are forwarded to controller by after signal receiving, the counter records time of reception node of controller, and time of reception node is reported to host computer by controller;
A8, the host computer distance according to transmitting time node and time of reception node calculate between read write line and positioning label.
A kind of radio-frequency (RF) identification positioning system of the present invention and method thereof compared with prior art have the following advantages: be provided with read write line and positioning label, complete location, simple and convenient; Be provided with location modifying label, revise the error brought due to factors vary such as temperature; First transceiving chip is different from the frequency of operation of receiving chip, prevents signal disturbing.
Accompanying drawing explanation
Fig. 1 is the one-piece construction schematic diagram of read write line in radio-frequency (RF) identification positioning system of the present invention;
Fig. 2 is the one-piece construction schematic diagram of positioning label of the present invention;
Fig. 3 is positioning signal schematic diagram;
Fig. 4 is the communication scheme of radio-frequency (RF) identification positioning system of the present invention;
Fig. 5 is positioning flow schematic diagram of the present invention;
Fig. 6 is the schematic diagram of radio-frequency (RF) identification positioning system determination positioning label position of the present invention.
Embodiment
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the present invention is further elaborated.
As depicted in figs. 1 and 2, a kind of radio-frequency (RF) identification positioning system, comprises: at least one read write line 1, for generation of and send wake-up signal and positioning signal; Positioning label 2, is back to corresponding read write line 1 by the ID of positioning label 2 numbering after receiving wake-up signal that read write line 1 sends; The positioning signal that positioning label 2 also sends for receiving read write line 1 also returns to this read write line 1 again and sends this positioning signal; Described read write line 1 is also for recording it to send timing node from positioning signal to positioning label 2, and this read write line 1 receives the timing node of the positioning signal that positioning label 2 returns; Host computer, is connected with described read write line 1, for sending location initiation command to read write line 1; The timing node of the timing node that host computer also sends for the positioning signal that records according to read write line 1 and the positioning signal that the reception positioning label 2 that read write line 1 records returns, calculates the distance between read write line 1 and positioning label 2; Location modifying label, for revising the error because temperature variation causes, the structure of described location modifying label is identical with the structure of described positioning label 2; Known and position, the position of described location modifying label immobilizes.
As shown in Figure 1, described read write line 1 comprises controller 11(FPGA), be connected with described host computer, for receive host computer send location initiation command after produce wake-up signal; Controller 11 also for generation of positioning signal, and processes the positioning signal that positioning label 2 returns; The first transceiving chip 12 be connected with described controller 11, for receiving the wake-up signal that controller 11 produces, and sends this wake-up signal to positioning label 2; First transceiving chip 12 also for receiving the positioning signal that controller 11 produces, and sends this positioning signal to positioning label 2; The receiving chip 13 be connected with described controller 11, wakes confirmation signal up for what receive that positioning label 2 returns; Receiving chip 13 is also for receiving the positioning signal that positioning label 2 returns, and the positioning signal this returned is sent to controller 11.Described controller 11 comprises many cluster counters, is respectively used to start timing at the rising edge of position pulse when controller 11 produces positioning signal, and when controller 11 receives the positioning signal that positioning label 2 returns, the rising edge of corresponding position pulse stops timing; Timing node is reported host computer by described counter, so just obtains an electromagnetic wave skyborne flight time.Controller 11 inside adopts high speed sampling clock, positioning precision according to demand selects sampling clock more at a high speed, such as the model of xilinx company can be selected in the application of about 40cm to be the FPGA of Spartan-6 for accuracy requirement, internal sample clock is 1GHz, and sampling time precision is 1ns.
As shown in Figure 2, described positioning label 2 comprises microcontroller 21 and the second transceiving chip 22 be connected with microcontroller 21 respectively, sends chip 23; The output terminal of the second described transceiving chip 22 is connected with the input end of described transmission chip 23; Described microcontroller 21 is for configuring the second transceiving chip 22, sending chip 23; The wake-up signal that the second described transceiving chip 22 sends for receiving the first transceiving chip 12, and is forwarded to microcontroller 21, and microcontroller 21 produces according to wake-up signal and wakes confirmation signal to be back to read write line 1 controller 11 through sending chip 23 up; This positioning signal also for receiving the positioning signal that the first transceiving chip 12 sends, and is back to the controller 11 of read write line 1 by the second described transceiving chip 22 through sending chip 23.
Complete in whole workflow, the second transceiving chip 22 can change different RF operating frequency points and the mode of operation of chip.Microcontroller 21 configures the second transceiving chip 22, send chip 23 mainly to comprise, microcontroller 21 first the second transceiving chip 22 is operated in public wake up frequency such as 2.42GHz and automatic No. ID coupling awakening mode (chip can comparison whether receive No. ID be oneself, if No. ID I/O port at chip that discovery is oneself produces wake-up signal, wake-up signal wakes place MCU microcontroller in the dormant state), after microcontroller 21 is waken up, first the second transceiving chip 22 is configured to sending mode, and control transmission chip 23 sends No. ID to read write line 1, represent and confirm that positioning label 2 is waken up.Second transceiving chip 22 is configured to position receiver rf frequency point such as 2.45GHz and Direct direct demodulation radiofrequency signal pattern (this mode RF chip does not do decoding effort to signal by microcontroller 21 afterwards, chip directly exports base band), microcontroller 21 opens the transmission chip 23 be at ordinary times in cut out simultaneously, transmission chip 23 is configured to sending mode, is operated in 2.47GHz rf frequency point and same Direct directly modulation pattern.
Such as, the SI4455 rf chip of two silicon labs companies is used in the present embodiment, the output terminal of a wherein radio frequency chip is directly received the input end of another chip, connection conductor spacing between two chip ports is as far as possible short, positioning signal is input to after the second transceiving chip 22 demodulation sends the input pin of chip 23, directly produces the positioning signal that the returns controller 11 to read write line 1.
As described in Figure 3, the aerial radio frequency signal frequency point identical (frequency 1) of the first transceiving chip 12 and the second transceiving chip 22; Described receiving chip 13 and the aerial radio frequency signal frequency point identical (frequency 2) sending chip 23; And the first described transceiving chip 12 is different from the aerial radio frequency signal frequency point of receiving chip 13.When first transceiving chip 12 of such read write line 1 sends positioning signal, the receiving chip 13 of read write line 1 cannot receive this positioning signal, can only receive the positioning signal returned of positioning label.Such as, the first transceiving chip 12 and the second transceiving chip 22 are operated in 2.45GHz, and receiving chip 13 is operated in 2.47GHz with transmission chip 23.
As shown in Figure 4, the positioning signal that described controller 11 produces comprises a synchronous head and position pulse, and the time interval between described adjacent positioned pulse is period of change.The positioning signal that the receiving chip 13 of read write line 1 is returned by synchronous head determination positioning label 2 arrives, in order to improve positioning label 2 position refreshing frequency, position pulse width is as far as possible short, 10ms can be set to, the synchronous head cycle is 10ms, and sending first high level width after synchronous head 40ms is the position pulse of 10ms, after 20ms, send second position pulse, after 40ms, send the 3rd position pulse, after 80ms, send the 4th position pulse.Adopt cyclomorphosis and known position pulse of follow-up position pulse cycle, baseband signal is also a kind of FM signal (cyclomorphosis in the present system, and frequency shift), the baseband signal cyclomorphosis of positioning signal, read write line determines T in figure by this cyclomorphosis
j1, T
j2and T
j3the timing time starting point of time and terminal, such as, in the present embodiment increase cycle 10ms, 20ms, 40ms, 80ms at double, other play the cycle variation laws distinguishing position pulse and also can apply.When controller 11 receives the positioning signal returned, can produce the signal of superposition from because of multipath, isolate the signal arrived the earliest, due to the shortest principle of point-to-point transmission straight line, positioning signal in air line distance arrives first, so the signal arrived first is the positioning signal that we need, this positioning signal can be avoided multi-path transmission to cause measuring the distance value obtained and produce deviation.
As shown in Figure 3,3 read write lines are comprised in radio-frequency (RF) identification positioning system, be respectively read write line 401, read write line 402, read write line 403, also comprise positioning label 404 and location modifying label 405 in addition, taking location initiation command when certain read write line can find range to positioning label 404, such as, first read write line 401 takes location initiation command, location initiation command is sent to read write line 402, by that analogy after having found range to positioning label 404 by it.The ID numbering of positioning label is comprised in the initiation command of location, location initiation command uses in turn between 3 read write lines, when host computer finds that numbering for certain ID the range data that wherein two read write lines obtain compared not change with last time, 3rd read write line can no longer position label, can improve the refreshing frequency of label position in many tag systems like this.
Particularly, frequency recognition positiming method, comprises following steps:
Read write line in S1, radio-frequency (RF) identification positioning system starts positioning flow after receiving the location initiation command of host computer transmission;
After the positioning flow of all read write lines in S2, radio-frequency (RF) identification positioning system is finished, host computer calculates the distance between each read write line and positioning label;
S3, host computer produce circular arc point of crossing to the distance between each read write line and positioning label, and host computer determines the coordinate position of positioning label according to circular arc point of crossing, completes location.
As shown in Figure 5, described positioning flow comprises:
First transceiving chip of A1, read write line produces wake-up signal, after the second transceiving chip of positioning label receives wake-up signal, wakes the microcontroller in dormancy up;
A2, microcontroller wake the receiving chip of ID numbering to read write line of confirmation signal and positioning label up by sending chip transmission;
A3, receiving chip will wake confirmation signal up and be forwarded to controller, and controller produces and sends positioning signal to the first transceiving chip, the counter records transmitting time node of controller, and transmitting time node is reported to host computer by controller;
Positioning signal is sent to the second transceiving chip of positioning label by A4, the first transceiving chip;
After A5, the second transceiving chip receive positioning signal, export the transmission chip of the positioning signal after demodulation to positioning label;
Positioning signal is sent to the receiving chip of read write line by A6, transmission chip;
A7, receiving chip are forwarded to controller by after signal receiving, the counter records time of reception node of controller, and time of reception node is reported to host computer by controller;
A8, the host computer distance according to transmitting time node and time of reception node calculate between read write line and positioning label.
Step S3 as shown in Figure 6, three read write lines (read write line 401, read write line 402 and read write line 403) are measured positioning label 404 and are obtained many groups unidirectional flight time, remove the wrong time that time phase difference is very large, again other times are averaged, by the skyborne time gap formula of electromagnetic wave, three read write lines divide other to arrive distance 1, distance 2 and distance 3, upper computer software determines the coordinate position of positioning label by the point of crossing that 3 distances produce circular arc, and location completes.
Because positioning signal has certain time-delay in the process received, send, aloft the two-way flight time is historical facts or anecdotes border electromagnetic wave:
T
S=T-T
1- T
2- T
3- T
4；
In formula, T
sfor actual flying time, T is the flight time accumulation of position pulse, T
1be the time delay of the first transceiving chip 12, T
2be the time delay of the second transceiving chip 22, T
3for sending the time delay of chip 23, T
4for the time delay of receiving chip 13.T
1, T
2, T
3, T
4be called the time delay of chip radio frequency circuit, i.e. hardware constant time lag, the two-way flight time just obtains the unidirectional flight time divided by 2, and read write line 1 is the unidirectional flight time be multiplied by the light velocity to the distance of positioning label 2.
The step S0 of the described positioning label that makes zero is comprised in taking a step forward of step S1;
S0.1, at room temperature (as 23 DEG C), by read write line near positioning label;
S0.2, host computer send positioning command to read write line, and read write line completes one-time positioning flow process;
S0.3, host computer compute location signal send and the mistiming received;
Mistiming is deducted the constant time lag T of read write line by S0.4, host computer
d(T
1+ T
4) after as the constant time lag T of positioning label
g(T
2+ T
3) and number corresponding with the ID of positioning label; Wherein
The constant time lag T of read write line
dthe calculation procedure of (read write line RF radio-frequency front-end constant time lag) comprises:
First transceiving chip of read write line and receiving chip are configured to same channel, and read write line is positioned in screened room;
First transceiving chip sends positioning signal, the counter records transmitting time node of controller;
Receiving chip receives positioning signal, the counter records time of reception node of controller;
Controller goes out the constant time lag of read write line according to transmitting time node and time of reception node calculate.Each read write line needs measurement to obtain this time before dispatching from the factory, and needs to deduct this time when calculating actual flying time.
The RF radio circuit of fixing chip at the same temperature, the constant time lag time basic one produced puts, in order to system does not affect positioning precision under Complex Temperature situation of change, we use location modifying label, location modifying label is the same with positioning label 2 inner structure, location modifying label with positioning label 2 under the temperature environment that substantially identical, the position of location modifying label is known and immobilizes, read write line 1, by location modifying label range finding, adjusts the constant time lag change of temperature variation chip RF radio-frequency (RF) front-end circuit.The impact that the time delay that radio circuit produces also can produce by chip parasitism, the parasitic parameter of each positioning label 2 has fine distinction.
The label of such as ID=0001, being fixed time delays when doing rezero operation is T
y, reading detective distance after the modifying label of location, 100 meters of is 110 meters, revises flight time T
x=(110-100)/c, c is the light velocity.After the tag computation flight time T1 that read write line 1 completes ID=0001, calculate real flight time T
z=T – T
y– T
x.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. a radio-frequency (RF) identification positioning system, is characterized in that, comprises:
At least one read write line (1), for generation of and send wake-up signal and positioning signal;
Positioning label (2), is back to corresponding read write line (1) by the ID of positioning label (2) numbering after receiving wake-up signal that read write line (1) sends; The positioning signal that positioning label (2) also sends for receiving read write line (1) also returns to this read write line (1) again and sends this positioning signal;
Described read write line (1) also sends the timing node of positioning signal for recording it to positioning label (2), and this read write line (1) receives the timing node of the positioning signal that positioning label (2) returns;
Host computer, is connected with described read write line (1), for sending location initiation command to read write line (1); The timing node of the timing node that host computer also sends for the positioning signal that records according to read write line (1) and the positioning signal that the reception positioning label (2) that read write line (1) records returns, calculates the distance between read write line (1) and positioning label (2).
2. radio-frequency (RF) identification positioning system as claimed in claim 1, it is characterized in that, described read write line (1) comprises controller (11), is connected with described host computer, after receiving location initiation command that host computer sends, produce wake-up signal;
Controller (11) also for generation of positioning signal, and processes the positioning signal that positioning label (2) returns;
The first transceiving chip (12) be connected with described controller (11), for receiving the wake-up signal that controller (11) produces, and sends this wake-up signal to positioning label (2);
First transceiving chip (12) also for receiving the positioning signal that controller (11) produces, and sends this positioning signal to positioning label (2);
The receiving chip (13) be connected with described controller (11), wakes confirmation signal up for what receive that positioning label (2) returns;
Receiving chip (13) is also for receiving the positioning signal that positioning label (2) returns, and the positioning signal this returned is sent to controller (11).
3. radio-frequency (RF) identification positioning system as claimed in claim 1 or 2, it is characterized in that, described positioning label (2) comprises microcontroller (21) and the second transceiving chip (22) be connected with microcontroller (21) respectively, sends chip (23);
The output terminal of described the second transceiving chip (22) is connected with the input end of described transmission chip (23);
Described microcontroller (21) is for configuring the second transceiving chip (22), sending chip (23);
The wake-up signal that described the second transceiving chip (22) sends for receiving the first transceiving chip (12), and being forwarded to microcontroller (21), microcontroller (21) produces according to wake-up signal and wakes confirmation signal up and be back to the controller (11) of read write line (1) through sending chip (23);
This positioning signal also for receiving the positioning signal that the first transceiving chip (12) sends, and is back to the controller (11) of read write line (1) by described the second transceiving chip (22) through sending chip (23).
4. radio-frequency (RF) identification positioning system as claimed in claim 3, it is characterized in that, comprise location modifying label further, for revising the error because temperature variation causes, the structure of described location modifying label is identical with the structure of described positioning label (2);
Known and position, the position of described location modifying label immobilizes.
5. radio-frequency (RF) identification positioning system as claimed in claim 3, it is characterized in that, described the first transceiving chip (12) is identical with the aerial radio frequency signal frequency point of the second transceiving chip (22);
Described receiving chip (13) is identical with the aerial radio frequency signal frequency point sending chip (23); And
Described the first transceiving chip (12) is different from the aerial radio frequency signal frequency point of receiving chip (13).
6. radio-frequency (RF) identification positioning system as claimed in claim 3, it is characterized in that, the positioning signal that described controller (11) produces comprises a synchronous head and position pulse, and the time interval between described adjacent positioned pulse is period of change.
7. radio-frequency (RF) identification positioning system as claimed in claim 6, it is characterized in that, described controller (11) comprises many cluster counters, be respectively used to start timing at the rising edge of position pulse when controller (11) produces positioning signal, when controller (11) receives the positioning signal that positioning label (2) returns, the rising edge of corresponding position pulse stops timing;
Timing node is reported host computer by described counter.
8. a frequency recognition positiming method, is characterized in that, comprises following steps:
Each read write line in S1, radio-frequency (RF) identification positioning system starts positioning flow after receiving the location initiation command of host computer transmission;
After the positioning flow of all read write lines in S2, radio-frequency (RF) identification positioning system is finished, host computer calculates the distance between each read write line and positioning label;
S3, host computer produce circular arc point of crossing to the distance between each read write line and positioning label, and host computer determines the coordinate position of positioning label according to circular arc point of crossing, completes location.
9. frequency recognition positiming method as claimed in claim 8, is characterized in that, comprise the step S0 of the described positioning label that makes zero in taking a step forward of step S1;
S0.1, at room temperature, by read write line near positioning label;
S0.2, host computer send positioning command to read write line, and read write line completes one-time positioning flow process;
S0.3, host computer compute location signal send and the mistiming received;
Number corresponding with the ID of positioning label as the constant time lag of positioning label after mistiming is deducted the constant time lag of read write line by S0.4, host computer; Wherein
The constant time lag T of read write line
dcalculation procedure comprise:
First transceiving chip of read write line and receiving chip are configured to same channel, and read write line is positioned in screened room;
First transceiving chip sends positioning signal, the counter records transmitting time node of controller;
Receiving chip receives positioning signal, the counter records time of reception node of controller;
Controller goes out the constant time lag of read write line according to transmitting time node and time of reception node calculate.
10. frequency recognition positiming method as claimed in claim 8 or 9, it is characterized in that, described positioning flow comprises:
The controller of A1, read write line produces wake-up signal, and be sent to the second transceiving chip of positioning label through the first transceiving chip, the second transceiving chip wakes the microcontroller in dormancy up after receiving wake-up signal;
A2, microcontroller wake the receiving chip of ID numbering to read write line of confirmation signal and positioning label up by sending chip transmission;
A3, receiving chip will wake confirmation signal up and be forwarded to controller, and controller produces and sends positioning signal to the first transceiving chip, the counter records transmitting time node of controller, and transmitting time node is reported to host computer by controller;
Positioning signal is sent to the second transceiving chip of positioning label by A4, the first transceiving chip;
After A5, the second transceiving chip receive positioning signal, export the transmission chip of the positioning signal after demodulation to positioning label;
Positioning signal is sent to the receiving chip of read write line by A6, transmission chip;
A7, receiving chip are forwarded to controller by after signal receiving, the counter records time of reception node of controller, and time of reception node is reported to host computer by controller;
A8, the host computer distance according to transmitting time node and time of reception node calculate between read write line and positioning label.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410689272.7A CN104331727A (en) | 2014-11-26 | 2014-11-26 | Radio frequency identification location system and method thereof |
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|---|---|---|---|
| CN201410689272.7A CN104331727A (en) | 2014-11-26 | 2014-11-26 | Radio frequency identification location system and method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105338620A (en) * | 2015-09-24 | 2016-02-17 | 深圳市金溢科技股份有限公司 | Wireless positioning card positioning module for Internet of Things, and wireless positioning card and system for Internet of Things |
| CN106875639A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | A kind of portable milk cow alignment system |
| CN109286391A (en) * | 2018-09-30 | 2019-01-29 | 成都精位科技有限公司 | Positioning signal reception method, device and equipment |
| CN109975751A (en) * | 2019-03-25 | 2019-07-05 | 深圳市联智物联网科技有限公司 | A kind of pulse counter distance measuring method |
| CN109975746A (en) * | 2019-03-25 | 2019-07-05 | 深圳市联智物联网科技有限公司 | A kind of localization method based on pulse counter ranging |
| CN110099352A (en) * | 2019-03-27 | 2019-08-06 | 电子科技大学广东电子信息工程研究院 | A kind of intelligent switch method of UWB positioning system locating base station needed for two and three dimensions positioning scene |
| CN111257831A (en) * | 2018-11-30 | 2020-06-09 | 财团法人金属工业研究发展中心 | Radio frequency positioning system |
| CN111862581A (en) * | 2020-06-22 | 2020-10-30 | 上海钧正网络科技有限公司 | Vehicle lock control method, vehicle lock control device, vehicle parking system and storage medium |
| CN111914968A (en) * | 2020-08-11 | 2020-11-10 | 上海双十信息科技有限公司 | Article loading accurate positioning method based on RFID technology |
| CN113109800A (en) * | 2019-12-24 | 2021-07-13 | 财团法人金属工业研究发展中心 | Radio frequency positioning method for measuring position of transceiver |
| 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 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101046843A (en) * | 2007-04-30 | 2007-10-03 | 郭岳衡 | Radio frequency recognition positiming method and its system |
| CN101604021A (en) * | 2009-07-09 | 2009-12-16 | 复旦大学 | A kind of localization method of radio frequency identification system and device |
| CN201662817U (en) * | 2010-02-09 | 2010-12-01 | 济南艾雅信息***有限公司 | Low-power-consumption intelligent label system based on RFID technology |
| CN102645645A (en) * | 2012-04-25 | 2012-08-22 | 东北大学 | Indoor self-positioning method and system |
| CN102879776A (en) * | 2012-09-19 | 2013-01-16 | 中国科学院微电子研究所 | Radio frequency identification ranging or positioning system and method thereof |
| CN103729661A (en) * | 2012-10-15 | 2014-04-16 | 成都西谷曙光数字技术有限公司 | System and method for read-write operation of active electronic tags with ultra-low power consumption |
-
2014
- 2014-11-26 CN CN201410689272.7A patent/CN104331727A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101046843A (en) * | 2007-04-30 | 2007-10-03 | 郭岳衡 | Radio frequency recognition positiming method and its system |
| CN101604021A (en) * | 2009-07-09 | 2009-12-16 | 复旦大学 | A kind of localization method of radio frequency identification system and device |
| CN201662817U (en) * | 2010-02-09 | 2010-12-01 | 济南艾雅信息***有限公司 | Low-power-consumption intelligent label system based on RFID technology |
| CN102645645A (en) * | 2012-04-25 | 2012-08-22 | 东北大学 | Indoor self-positioning method and system |
| CN102879776A (en) * | 2012-09-19 | 2013-01-16 | 中国科学院微电子研究所 | Radio frequency identification ranging or positioning system and method thereof |
| CN103729661A (en) * | 2012-10-15 | 2014-04-16 | 成都西谷曙光数字技术有限公司 | System and method for read-write operation of active electronic tags with ultra-low power consumption |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105338620B (en) * | 2015-09-24 | 2019-01-22 | 深圳市金溢科技股份有限公司 | Positioning module, wireless location card and system applied to Internet of Things |
| CN105338620A (en) * | 2015-09-24 | 2016-02-17 | 深圳市金溢科技股份有限公司 | Wireless positioning card positioning module for Internet of Things, and wireless positioning card and system for Internet of Things |
| CN106875639A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | A kind of portable milk cow alignment system |
| CN109286391A (en) * | 2018-09-30 | 2019-01-29 | 成都精位科技有限公司 | Positioning signal reception method, device and equipment |
| CN111257831A (en) * | 2018-11-30 | 2020-06-09 | 财团法人金属工业研究发展中心 | Radio frequency positioning system |
| CN111257831B (en) * | 2018-11-30 | 2022-03-25 | 财团法人金属工业研究发展中心 | Radio frequency positioning system |
| CN109975751A (en) * | 2019-03-25 | 2019-07-05 | 深圳市联智物联网科技有限公司 | A kind of pulse counter distance measuring method |
| CN109975746A (en) * | 2019-03-25 | 2019-07-05 | 深圳市联智物联网科技有限公司 | A kind of localization method based on pulse counter ranging |
| CN109975746B (en) * | 2019-03-25 | 2021-06-22 | 深圳市联智物联网科技有限公司 | Positioning method based on pulse counting type distance measurement |
| CN110099352A (en) * | 2019-03-27 | 2019-08-06 | 电子科技大学广东电子信息工程研究院 | A kind of intelligent switch method of UWB positioning system locating base station needed for two and three dimensions positioning scene |
| CN113109800A (en) * | 2019-12-24 | 2021-07-13 | 财团法人金属工业研究发展中心 | Radio frequency positioning method for measuring position of transceiver |
| CN111862581A (en) * | 2020-06-22 | 2020-10-30 | 上海钧正网络科技有限公司 | Vehicle lock control method, vehicle lock control device, vehicle parking system and storage medium |
| CN111914968A (en) * | 2020-08-11 | 2020-11-10 | 上海双十信息科技有限公司 | Article loading accurate positioning method based on RFID technology |
| CN111914968B (en) * | 2020-08-11 | 2023-10-13 | 上海双十信息科技有限公司 | Article loading accurate positioning method based on RFID technology |
| 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 |
| CN113473376A (en) * | 2021-07-16 | 2021-10-01 | 成都四相致新科技有限公司 | Method and device for improving object positioning refresh rate |
| CN113473376B (en) * | 2021-07-16 | 2024-02-13 | 成都四相致新科技有限公司 | Method and device for improving object positioning refresh rate |
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