CN104951816A - Electricity metering asset RFID batch intelligent identification device - Google Patents
Electricity metering asset RFID batch intelligent identification device Download PDFInfo
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- CN104951816A CN104951816A CN201410127498.8A CN201410127498A CN104951816A CN 104951816 A CN104951816 A CN 104951816A CN 201410127498 A CN201410127498 A CN 201410127498A CN 104951816 A CN104951816 A CN 104951816A
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- antenna
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- stop
- absorbing material
- identification device
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2216—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in interrogator/reader equipment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
- H01Q3/04—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation
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Abstract
The present invention relates to an electricity metering asset RFID batch intelligent identification device. A cavity is formed by interior panels. The outer side of the interior panels is provided with a wave absorbing material. Sliding rails are arranged between the interior panels and the wave absorbing material. The sliding rails are close to one side of the wave absorbing material and are provided with two sliding platforms which are provided with a first antenna and a second antenna respectively. Two ends of the sliding platform are provided with a first motor and a second motor respectively. Both the first motor and the second motor are provided belts. A second stopper and a fourth stopper are arranged close to the first motor, and a first stopper and a third stopper are arranged close to the second motor. The sliding rails close to the first motor and the second motor are provided with reading and writing devices. According to the technology of the invention, asset can be effectively written and read by using an RFID reading and writing device, the use efficiency is greatly improved, the metering of the asset is facilitated, and the device is convenient and rapid to use.
Description
Technical field
The present invention relates to a kind of electric-power metering assets RFID batch intelligent identification device, belong to communication technical field.
Background technology
RFID technique is a kind of noncontact automatic identification technology utilizing radio communication to realize, have the features such as fast moving objects identification, multi-targets recognition and contactless identification, conventional has the technology such as low frequency (125k ~ 134.2K), high frequency (13.56MHz), ultrahigh frequency (900MHz), microwave (2.4GHz and 5.8GHz).RFID technique is widely used in the fields such as logistics, manufacture, communications and transportation, medical treatment, false proof, asset management.
RFID device is made up of radio electronic label, read write line, emitting antenna and host computer, read write line forms electromagnetic field by emitting antenna at a field emission energy, radio-frequency (RF) tag sends the data of storage after the signal that this region detects read write line, the signal that read write line received RF label sends, decoding the accuracy of checking data are to reach the object of identification.Radio electronic label is generally with antenna and integrated circuit, and under external force, integrated circuit can store the data needing mark to radio electronic label, also under the effect of external force, the data stored can be launched.The basic function of read write line is just to provide the approach carrying out data transmission with label, and in addition, read write line also provides that quite complicated signal condition controls, bad parity verification and more orthofunction etc.In radio electronic label except storing the data of needs transmission, also must contain certain additional information, as error correction information etc.Together with data to be identified and additional information are organized according to certain structure, and outwards send according to specific order.Read write line carrys out the transmission of control data stream by the additional information received.Emitting antenna is the transmitting, the receiving trap that transmit data between radio electronic label and read write line.In actual applications, except rating of set, the shape of antenna and relative position also can affect the transmitting and receiving of data.
Tag compliance is one of radio electronic label most important parameters.At present, carry out in the process of radio electronic label consistency detection in employing RFID technique, the electromagnetic field that there is antenna transmission can not accurately control, and cannot determine the problem of the definite read range of radio-frequency (RF) identification, and causing cannot the problem of accurate detected electrons tag compliance.
Summary of the invention
The object of the present invention is to provide a kind of electric-power metering assets RFID batch intelligent identification device, to carry out the scanning of RFID batch identification for electric-power metering assets better, be convenient to asset management.
To achieve these goals, technical scheme of the present invention is as follows.
A kind of electric-power metering assets RFID batch intelligent identification device, cavity is surrounded by trim panel, the arranged outside of trim panel has absorbing material as shell, slide rail is provided with between trim panel and absorbing material, slide rail is near absorbing material side, slide rail is provided with sliding platform, and sliding platform is provided with two, two sliding platforms is respectively arranged with the first antenna and the second antenna; The end positions of sliding platform is respectively arranged with the first motor and the second motor, and the first motor and the second motor are provided with belt; First motor position place is provided with the second stop and the 4th stop, the first motor position place is provided with the first stop and the 3rd stop; The slide rail of close first motor and the second motor position is provided with read write line, read write line is provided with signal wire and is connected with the second antenna with the first antenna respectively.
Further, the first stop, the second stop, the 3rd stop and the 4th stop are all fixedly connected on slide rail.
Further, the cross section that trim panel is connected with absorbing material is respectively arranged with the first axle and the second axle, the first axle is connected with the second motor with the first motor respectively with the second axle.
Further, the first stop place is provided with the first initial point, and the 4th stop place is provided with the second initial point.
Further, absorbing material Main Function is absorbed into ejected wave to reduce it to wave reflection, thus avoid reflection wave to offset effective incident wave formation read-write blind area.
Further, trim panel adopts the pvc plate of upholstery, and effect is that the electromagnetic wave of transmitting can be passed through without barrier.
The job step of said apparatus is as follows:
(1) use special transport device that the electric-power metering assets of superior unit or this storehouse are transported to this device inside, and close the gate of this device;
(2) operate this device side panel computer and send the instruction starting to scan electric power asset;
(3) the first motor of both sides and the second motor operate simultaneously, drive the sliding platform linked with belt, thus one group of radio-frequency antenna that drive sliding platform is installed moves along slide rail, launch and accept electromagnetic wave gathers the information of electric-power metering assets simultaneously.
(4) both sides antenna always rotation direction of motion and duty, namely when side antenna moves right and be in launch magnetic field state time, opposite side antenna is to left movement and be in and accept magnetic field state.When starting to scan, both sides antenna is respectively by the first initial point and the second origin position, and when the first antenna moves to the second stop, the second antenna just in time moves to the 3rd stop, touches stop aft antenna and can convert duty and back move.Get back to the first change of origin direction move when the first antenna moves to the first stop and convert duty, the second antenna movement moves to getting back to the second change of origin direction during the 4th stop and converts duty.When antenna is in receive status, antenna can receive the electric power asset information that scans and be transferred on panel computer by the connected read write line in this side, and both sides alternately reciprocal this workflow, until scan all electric power asset information.
(5) when this device scanning electric power asset information, operating personnel can see scanning situation by panel computer, after operating personnel see scanning completely, just can operate and stop scanning, the initial point place that antenna can playback respective.
(6) scanned, from this device, electric power asset has been transported to side outlet, carried out putting in storage or outbound operation.
The present invention adopts near field antenna technology, by received signal strength indicator (Received Signal Strength Indicator, RSSI) consistance of tags detected, the i.e. difference of the inter-stage such as real received signal strength and optimum received signal strength, its realization is carried out after reverse receiving cable Baseband Receiver wave filter.The signal intensity of mainly index label reflected signal in passive radio frequency identification (RFID) system read-write device.
This beneficial effect of the invention is: this invention technology can adopt rfid interrogator read-write for assets effectively, improves service efficiency significantly, is convenient to the metering of assets, convenient to use.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention device schematic diagram.
Fig. 2 is the bending dipole antenna prototype schematic diagram in the embodiment of the present invention.
Fig. 3 is the bending dipole antenna design structure diagram in the embodiment of the present invention.
Description of symbols in figure: 1, the first axle; 2, the second axle; 3, the first stop; 4, the first initial point; 5, slide rail; 6, sliding platform; 7, absorbing material; 8, read write line; 9, the second stop; 10, the first motor; 11, belt; 12, the first antenna; 13, trim panel; 14, the second antenna; 15, the second motor; 16, the 3rd stop; 17, the second initial point; 18, the 4th stop.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described, better to understand the present invention.
Embodiment
Electric-power metering assets RFID batch intelligent identification device as shown in Figure 1, cavity is surrounded by trim panel 13, the arranged outside of trim panel 13 has absorbing material 7 as shell, slide rail 5 is provided with between trim panel 13 and absorbing material 7, slide rail 5 is near absorbing material 7 side, slide rail 5 is provided with sliding platform 6, sliding platform 6 is provided with two, two sliding platforms 6 is respectively arranged with the first antenna 12 and the second antenna 14; The end positions of sliding platform 6 is respectively arranged with on the first motor 10 and the second motor 15, first motor 10 and the second motor 15 and is provided with belt 11; First motor 10 position is provided with the second stop 9 and the 4th stop 18, the first motor 15 position is provided with the first stop 3 and the 3rd stop 16; The slide rail 5 of close first motor 10 and the second motor 15 position is provided with read write line 8, read write line 8 is provided with signal wire and is connected with the second antenna 14 with the first antenna 12 respectively.
First stop 3, second stop 9, the 3rd stop 16 and the 4th stop 18 are all fixedly connected on slide rail 5.The cross section that trim panel 13 is connected with absorbing material 7 is respectively arranged with the first axle 1 and the second axle 2, first axle 1 is connected with the second motor 15 with the first motor 10 respectively with the second axle 2.First stop 3 place is provided with the first initial point the 4, four stop 18 place and is provided with the second initial point 17.Absorbing material 7 Main Function is absorbed into ejected wave to reduce it to wave reflection, thus avoid reflection wave to offset effective incident wave formation read-write blind area.Trim panel 13 adopts the pvc plate of upholstery, and effect is that the electromagnetic wave of transmitting can be passed through without barrier.
The job step of said apparatus is as follows:
(1) use special transport device that the electric-power metering assets of superior unit or this storehouse are transported to this device inside, and close the gate of this device;
(2) operate this device side panel computer and send the instruction starting to scan electric power asset;
(3) the first motor 10 of both sides and the second motor 15 operate simultaneously, drive the sliding platform 6 linked with belt 11, thus driving one group of radio-frequency antenna that sliding platform 6 is installed to move along slide rail 5, launch and accept electromagnetic wave gathers the information of electric-power metering assets simultaneously.
(4) both sides antenna always rotation direction of motion and duty, namely when side antenna moves right and be in launch magnetic field state time, opposite side antenna is to left movement and be in and accept magnetic field state.When starting to scan, both sides antenna is respectively by the first initial point 4 and the second initial point 17 position, when the first antenna 12 moves to the second stop 9, the second antenna 14 just in time moves to the 3rd stop 16, touches stop aft antenna and can convert duty and back move.Get back to the first initial point 4 to change direction and move when the first antenna 12 moves to the first stop 3 and convert duty, get back to the second initial point 17 when the second antenna 14 moves to the 4th stop 18 and change direction and move and convert duty.When antenna is in receive status, antenna can receive the electric power asset information that scans and be transferred on panel computer by the connected read write line in this side, and both sides alternately reciprocal this workflow, until scan all electric power asset information.
(5) when this device scanning electric power asset information, operating personnel can see scanning situation by panel computer, after operating personnel see scanning completely, just can operate and stop scanning, the initial point place that antenna can playback respective.
(6) scanned, from this device, electric power asset has been transported to side outlet, carried out putting in storage or outbound operation.
The present invention adopts near field antenna technology, by received signal strength indicator (Received Signal Strength Indicator, RSSI) consistance of tags detected, the i.e. difference of the inter-stage such as real received signal strength and optimum received signal strength, its realization is carried out after reverse receiving cable Baseband Receiver wave filter.The signal intensity of mainly index label reflected signal in passive radio frequency identification (RFID) system read-write device.
In ultrahigh-frequency radio-frequency identification system, dipole antenna and distressed structure thereof are the most frequently used antennas, and Fig. 2 is the prototype of bending dipole antenna.It is bent into square by λ/2 dipole antenna to form, and therefore the square length of side is λ/8.Near field antenna of the present invention is transformed into rectangle structure to realize miniaturization based on traditional half wavelength dipoles sub antenna.Uhf band near field antenna adopts bending dipole antenna structure, greatly can reduce the size of antenna.The near field of uhf band and the division in far field may be defined as:
wherein D is the full-size of antenna, and γ is wavelength.In near field, the relation between field intensity component and antenna distance r is 1/r
3, energy storage, among the Electric and magnetic fields of change, is conducive to carrying out Energy Coupling, is not subject to the impact of environment.
Micro-strip paster antenna is adopted to make.It is little that microstrip antenna has volume, lightweight, low section, can be conformal with carrier (as aircraft); Low cost of manufacture, is easy to a large amount of production; Electrical property variation, is easy to realize various polarization and multiband work etc.Fig. 3 is bending dipole antenna design structure diagram provided by the invention.Compare tours antenna, surface antenna, the antenna size be bent into needed for square dipole antenna is less, is 1/4 of tours antenna area respectively, 1/16 of area needed for surface antenna, is the most ideal scheme of antenna miniaturization.Must manage in the design process to improve antenna impedance to realize the impedance matching with reader.By improving input impedance, making it reach 50 Ω and mating with reader output impedance.In actual antennas adjustment process, increased length, reduces width, realizes the dipole antenna shape of elongate in shape, and improves input impedance by the spacing of adjustment two extremely between son, as shown in Figure 3.The gain of this antenna is less, and electric current is less, less to extraradial energy, and energy mainly concentrates on antenna near-field district.The radiation resistance calculating this antenna is as follows
α is antenna size, for 32mm, λ are electromagnetic wavelength under 915MHz frequency.According to energy conversion principle, E
total=E
r+ E
h.Wherein E
totalfor the gross energy of transmitter, it can be characterized by the S of antenna (1,1), and S (1,1) is very low, represents very little concerning energy reflection antenna input, thus E
totallarger.E
rfor electric field radiation energy, by R
rcharacterize E
r, R
rless, E is described
rless, therefore H
t(being converted to the energy in magnetic field) is very large, and demonstrating this antenna is near field antenna.The making of integrated antenna antenna element is structured in FR4 substrate, thickness of slab 2mm, on the printed circuit board (PCB) to specific inductive capacity 4.7.Specific inductive capacity relatively high material is needed the RF radiation level of releasing from antenna rear portion to be minimized.The antenna resonant frequency of actual fabrication is 915MHz, and impedance bandwidth is 907-922MHz 15MHz altogether.Test result and simulation result coincide better, and have consistance.Connect reader and carry out actual test, reading/writing distance is at 0.1mm ~ 5mm, and stable performance, meets uhf band and detect reading and writing device antenna requirement.
This device adopts received signal strength indicator (Received Signal Strength Indicator, RSSI) to judge the consistance of label.Received signal strength indicator (Received Signal Strength Indicator, RSSI) refer to the difference of the inter-stages such as real received signal strength and optimum received signal strength, its realization is carried out after reverse receiving cable Baseband Receiver wave filter.The signal intensity of mainly index label reflected signal in passive radio frequency identification (RFID) system read-write device.
By roll label label T1 in order ... Tn, and leapfrog test 10 M1 under test machine controls ... M10.The mean value RSSI of N number of label acknowledge(ment) signal intensity level to be measured
m is averagefor
(m is leapfrog test number of times, m=1,2,3 ..., 10, i is test sample book numbering, i=1,2,3 ... n) sample standard deviation:
Whole sample standard deviation sum δ is:
Wherein mean value RSSI
m is averagerepresent tag performance, whole sample standard deviation sum
δ
mrepresent the benchmark results of this batch of tag compliance, sample standard deviation sum δ is less, and represent that the conforming degree of antenna is better, the performance of RFID label tag is more stable, for example, supposes the RSSI of one batch of RFID A
m is averagetest result is 0.4, conforming benchmark results δ
athe antenna RSSI of=15.81, another RFID label tag B
m is averagetest result is 0.8, conforming benchmark results δ
b=7.07, then the conclusion of benchmark test can be described as: the performance of the Performance Ratio A of RFID B is good, and the degree of consistency is higher than the antenna degree of consistency of RFID label tag A simultaneously, and RFID label antenna B has higher stability.
Radio-frequency antenna adopts independent operation mode, the closed rigid structure of screened room, and transmission module, by driver and controller control antenna position and angle, is optimized filter algorithm, distinguished whole electronic tag.Read write line adopts four mouthfuls of antenna ports, and its antenna port is divided into two groups, often organizes 2 antennas, takes turns to operate between two groups of antennas, namely, during first group of work, second group of time-out, during second group of work, first group of time-out, often organize the working time at 100 milliseconds, the time interval between two groups is at 5 milliseconds.Between 2 antennas often organized, alternate emission receives electromagnetic wave, namely during first antenna transmission electromagnetic wave, second antenna is in reception electromagnetic wave, when second antenna is in emitting electromagnetic wave state, first antenna is in reception electromagnetic wave, the time remaining of antenna transmission state 10 milliseconds, the time remaining of antenna accepting state 10 milliseconds.
Read write line frequency range selection gist system application need determine, 900MHz, 2.4GHz, 433MHz, 13.56MHz and 125KHz equifrequent can be adopted.Need to consider the suitability between Product labelling and marking articles, article are reduced to bottom line for the impact of label, are conducive to read write line and read, have higher anti-collision capacity, have higher data acquisition rate.
Read write line emitting electromagnetic wave, the metal wall in screened room is absorbed an electromagnetic wave part, and major part is reflected, and the phase place of reflection wave and incident wave is contrary.
When the electric field produced due to the electromagnetic reflex of metal pair is just mutually identical with original electric field position in a certain position, so can strengthens the induction of label at this position electric field, tag reader rate can be improved; When the phase place of reflected field is contrary with original electric field phase, can electromagnetic wave be offset, form read-write blind area, thus reduce the read rate of label, but be not cannot read completely.Blind area has uncertainty, changes according to aerial angle, position, radio frequency intensity.
Read write line adopts ultrahigh frequency UHF or microwave frequency band read write line, air interface protocols is EPCglobal UHF Class1Gen2/ISO18000-6C, consistance under intensive reader/writer mode and interoperability certification, operating frequency is 920-925 megahertz, and antenna port is 4 high-performance single-polarized antenna interfaces with the contrary TNC connector of polarity.Radio-frequency power is+30dBm.Sensitivity is-80dBm, and agreement adopts EPCglobal low level read write line agreement (LLRP).
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (4)
1. an electric-power metering assets RFID batch intelligent identification device, it is characterized in that: surround cavity by trim panel, the arranged outside of trim panel has absorbing material as shell, slide rail is provided with between trim panel and absorbing material, described slide rail is near absorbing material side, described slide rail is provided with sliding platform, and described sliding platform is provided with two, two sliding platforms is respectively arranged with the first antenna and the second antenna; The end positions of described sliding platform is respectively arranged with the first motor and the second motor, and described first motor and the second motor are provided with belt; First motor position place is provided with the second stop and the 4th stop, the first motor position place is provided with the first stop and the 3rd stop; The slide rail of close first motor and the second motor position is provided with read write line, described read write line is provided with signal wire and is connected with the second antenna with the first antenna respectively.
2. electric-power metering assets RFID batch intelligent identification device according to claim 1, is characterized in that: described first stop, the second stop, the 3rd stop and the 4th stop are all fixedly connected on slide rail.
3. electric-power metering assets RFID batch intelligent identification device according to claim 1, it is characterized in that: the cross section that described trim panel is connected with absorbing material is respectively arranged with the first axle and the second axle, described first axle is connected with the second motor with the first motor respectively with the second axle.
4. electric-power metering assets RFID batch intelligent identification device according to claim 1, it is characterized in that: described first stop place is provided with the first initial point, described 4th stop place is provided with the second initial point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410127498.8A CN104951816A (en) | 2014-03-31 | 2014-03-31 | Electricity metering asset RFID batch intelligent identification device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410127498.8A CN104951816A (en) | 2014-03-31 | 2014-03-31 | Electricity metering asset RFID batch intelligent identification device |
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| CN104951816A true CN104951816A (en) | 2015-09-30 |
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| CN201410127498.8A Pending CN104951816A (en) | 2014-03-31 | 2014-03-31 | Electricity metering asset RFID batch intelligent identification device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3276742A1 (en) * | 2016-07-26 | 2018-01-31 | Toshiba TEC Kabushiki Kaisha | Tag reading device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006022605A1 (en) * | 2004-01-06 | 2006-03-02 | Crosby Noyes | Window mounted automatic pet door |
| CN101872885A (en) * | 2010-05-28 | 2010-10-27 | 中国科学院自动化研究所 | Rapid deploying system and method for a RFID (radio frequency identification devices) antenna |
| CN103616577A (en) * | 2013-11-01 | 2014-03-05 | 国家电网公司 | Radio frequency electronic tag consistency detection method |
-
2014
- 2014-03-31 CN CN201410127498.8A patent/CN104951816A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006022605A1 (en) * | 2004-01-06 | 2006-03-02 | Crosby Noyes | Window mounted automatic pet door |
| CN101872885A (en) * | 2010-05-28 | 2010-10-27 | 中国科学院自动化研究所 | Rapid deploying system and method for a RFID (radio frequency identification devices) antenna |
| CN103616577A (en) * | 2013-11-01 | 2014-03-05 | 国家电网公司 | Radio frequency electronic tag consistency detection method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3276742A1 (en) * | 2016-07-26 | 2018-01-31 | Toshiba TEC Kabushiki Kaisha | Tag reading device |
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