CN209280740U - A kind of chipless RFID angular-rate sensor and measuring system - Google Patents
A kind of chipless RFID angular-rate sensor and measuring system Download PDFInfo
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- CN209280740U CN209280740U CN201920032721.9U CN201920032721U CN209280740U CN 209280740 U CN209280740 U CN 209280740U CN 201920032721 U CN201920032721 U CN 201920032721U CN 209280740 U CN209280740 U CN 209280740U
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- Prior art keywords
- angular
- rate sensor
- chipless rfid
- minor matters
- medium substrate
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- 239000000758 substrate Substances 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 8
- 238000005452 bending Methods 0.000 claims abstract description 7
- 239000002356 single layer Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005388 cross polarization Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model discloses a kind of chipless RFID angular-rate sensor and measuring systems, including medium substrate, label chip unit and metal floor, the label chip unit is located at the upper surface of medium substrate, the metal floor is located at the lower surface of medium substrate, and the label chip unit is made of multiple dipoles by bending.The utility model can be realized the wireless measurement to article for rotation angular speed.
Description
Technical field
The utility model relates to internet of things field, and in particular to a kind of chipless RFID angular-rate sensor and measurement system
System.
Background technique
Radio frequency identification (RFID) technology is to be identified and read and write phase to information on target object using radio frequency electromagnetic signal
A kind of wireless communication technique closed.Since this technology does not need to carry out directly between identifying system and object to be measured object
Mechanical or optical contact, application field is increasingly broad, especially in internet of things field.Generally, radio-frequency recognition system is main
It is made of label, reader, application software system three parts.Wherein, label is used to be attached on object under test, thus to reading
The relevant information of device transmission target object.Currently, label mainly includes that Chip-free label and tradition have chip tag.And chipless
RFID label tag due to eliminating the Integrated circuit IC in label (Integrated Circuit) compared to conventional RFID tag,
Either in forming label the cost still adaptability to application environment, all with greater advantage.
On the other hand, traditional angular-rate sensor carries out angular velocity measurement using Coriolis power principle,
When measurement, entire sensor-based system must be kept in contact with object under test and connect, and cannot achieve wireless sensing.
Utility model content
In order to overcome shortcoming and deficiency of the existing technology, the utility model primary and foremost purpose is to provide a kind of work super
The chipless RFID angular-rate sensor in broadband (3.1-10.6GHz)；
Another purpose of the utility model is to provide a kind of measuring system of chipless RFID angular-rate sensor.
The utility model adopts the following technical solution:
A kind of chipless RFID angular-rate sensor, including medium substrate, label chip unit and metal floor, the mark
Label chip unit is located at the upper surface of medium substrate, and the metal floor is located at the lower surface of medium substrate, the label patch
Unit is made of multiple dipoles by bending.
The dipole of the bending is specially L shape, and L shape is made of lateral minor matters and vertical minor matters.
The lateral minor matters and vertical minor matters of multiple dipoles are parallel to each other in the utility model, and the vertex of multiple dipoles exists
On straight line.
The length of the vertical minor matters is greater than lateral minor matters.
The medium substrate is single layer.
A kind of measuring system using chipless RFID angular-rate sensor, including reader, transmitting antenna, receiving antenna
And chipless RFID angular-rate sensor, the chipless RFID angular-rate sensor are attached to the object table of angular speed to be measured
Face, transmitting antenna emit vertically polarized wave as request signal, and request signal passes through the water of chipless RFID angular-rate sensor
Flat polarization components are received antenna reception.
The course of work of the utility model:
Chipless RFID angular-rate sensor is attached to the body surface of angular speed to be measured, setting tag object at this time
Position is initial position；
Then under static state, emitted from reader by transmitting antenna to the angular-rate sensor in initial position
Vertically polarized wave can produce after the tag unit of the signal radiation to the sensor in its cross polarization direction as interrogation signal
The RCS component of raw higher amplitude, and the RCS will generate peak value in multiple specific frequency points, enabling multiple peak value frequency points is respectively f1、
f2......fn, the value of corresponding peaks point is initial value at this time, is denoted as A respectively1、A2......An；
When object rotation, label is continuously read by reader in f1、f2......fnAt a frequency point in horizontal direction
RCS value B1、B2......Bn, and t at the time of record locating when reading RCS value at this n frequency point every time simultaneously；
When the RCS value recorded in sometime t meets RCS amplitude difference
When, ε0For preset error precision, that is, thinks to rotate back to initial position again in moment point t object under test, then exist
Meet it is above-mentioned under conditions of two adjacent moment t1With t2Between object rotation mean angular velocity be expressed as
The utility model has the beneficial effects that
(1) the utility model can be realized the wireless measurement to article for rotation angular speed；
(2) the utility model obtains the angular velocity information of object rotation using dual-frequency point or multiple discrete frequency points.Relatively
In single frequency point, angular speed can be more accurately measured.And relative to amplitude-versus-frequency curve is used, considerably reduce reader
Data volume when reading and handling label information improves the speed of reading and the processing of reader, improves measurement accuracy；
(3) the utility model chipless RFID angular-rate sensor uses polarization label, can reduce object under test back
Influence of the scape environmental noise to reader.
Detailed description of the invention
Fig. 1 is the top view of the utility model；
Fig. 2 is the side view of the utility model；
Fig. 3 is the structural parameters figure of the utility model；
Fig. 4 is the working system diagram using the utility model；
Fig. 5 (a) be in the utility model label when rotational angle is 1 degree and initial position i.e. rotational angle is 0 degree
RCS amplitude-frequency analogous diagram；
When Fig. 5 (b) is that label is rotated with object in the utility model, in f1And f2RCS in horizontal direction at two frequency bins
Range error εRCSWith the analogous diagram of rotational angle Angle.
Specific embodiment
Below with reference to examples and drawings, the utility model is described in further detail, but the reality of the utility model
It is without being limited thereto to apply mode.
Embodiment
As Figure 1-Figure 2, a kind of chipless RFID angular-rate sensor, using polarization-agile technology, including medium substrate
1, label chip unit 2 and metal floor 3, the label chip unit are located at the upper surface of medium substrate, the metal floor
Positioned at the lower surface of medium substrate, the label chip unit is made of multiple dipoles by bending, and medium substrate is single
Layer medium substrate.
The dipole by bending is presented L shape in size and geometry, and the length of horizontal direction and vertical direction is not
Unanimously.L shape is directly made of vertical minor matters and horizontal minor matters.
Label chip unit is made of 12 L shape minor matters in the present embodiment, and the horizontal minor matters of 12 L shape minor matters are mutually flat
Row, vertical minor matters are parallel to each other, and vertex is on same straight line, and L shape minor matters is opening down.By changing horizontal minor matters
Or the length of vertical minor matters changes the position of resonance frequency point.
In the present embodiment, the medium substrate uses high frequency plate Taconic TLX-8, and relative dielectric constant is
2.55, electrical loss angle tangent value is 0.0019.As shown in Fig. 2, the thickness H of medium substrate is 0.8mm.As shown in figure 3, medium base
The length of plate: L1=25mm, W1=20mm.
As shown in figure 3, the design parameter of label chip unit is the length of vertical minor matters V2: L2=11mm, horizontal minor matters
The length of H2: W2=6mm, width are equal are as follows: cw=0.5mm.Spacing distance between adjacent L shape minor matters is all 0.5mm.
As shown in figure 4, it is a kind of measuring system of chipless RFID angular-rate sensor, it includes reader, transmitting
The angular-rate sensor (calling label in the following text) of antenna TX and receiving antenna RX and the present embodiment, transmitting antenna TX emit vertical polarization
As request signal, the horizontal polarized components that this signal fires back after label noted earlier can be received antenna RX and connect wave
It receives.
As shown in Fig. 5 (a), the RCS of the horizontal component received, when label is in initial position, (rotational angle is
When 0degree), in the f of frequency domain1And f2Two frequency bins show as apparent resonance wave crest, and amplitude is respectively A1With A2.With mark
Label rotate counterclockwise 1degree, and to low frequency offset, this causes in initial position resonance frequency point f resonance peak dot frequency1And f2Place
Range value fall to B respectively1And B2.Then, can obtain corresponding amplitude difference is εRCS=| B1-A1|+|B2-A2|=5.85dBsm.
As shown in Fig. 5 (b), εRCSWith rotation angle size variation, and rotation 0degree (initial position) and
When 360degree (coming back to initial position), εRCSGetting minimum value is about 0.01dBsm, then can use error precision ε at this time0
=0.01dBsm, if remembering respectively t at the time of when object under test turns to 0degree and 360degree1With t2, then in t1To t2
Between this period, the angular speed of object rotation can be expressed as
Above-described embodiment is the preferable embodiment of the utility model, but the embodiments of the present invention is not by described
The limitation of embodiment, it is made under other any spiritual essence and principles without departing from the utility model to change, modify, replacing
In generation, simplifies combination, should be equivalent substitute mode, is included within the protection scope of the utility model.
Claims (6)
1. a kind of chipless RFID angular-rate sensor, which is characterized in that including medium substrate, label chip unit and metal
Plate, the label chip unit are located at the upper surface of medium substrate, and the metal floor is located at the lower surface of medium substrate, described
Label chip unit is made of multiple dipoles by bending.
2. a kind of chipless RFID angular-rate sensor according to claim 1, which is characterized in that the dipole of the bending
Son is specially L shape, and L shape is made of lateral minor matters and vertical minor matters.
3. a kind of chipless RFID angular-rate sensor according to claim 2, which is characterized in that the cross of multiple dipoles
It is parallel to each other to minor matters and vertical minor matters, the vertex of multiple dipoles is point-blank.
4. a kind of chipless RFID angular-rate sensor according to claim 2, which is characterized in that the vertical minor matters
Length is greater than lateral minor matters.
5. a kind of chipless RFID angular-rate sensor according to claim 1, which is characterized in that the medium substrate is
Single layer.
6. a kind of measuring system using the described in any item chipless RFID angular-rate sensors of claim 1-5, feature
It is, including reader, transmitting antenna, receiving antenna and chipless RFID angular-rate sensor, the chipless RFID angle speed
Degree sensor is attached to the body surface of angular speed to be measured, and transmitting antenna emits vertically polarized wave as request signal, inquiry letter
Number by chipless RFID angular-rate sensor horizontal polarized components be received antenna reception.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920032721.9U CN209280740U (en) | 2019-01-09 | 2019-01-09 | A kind of chipless RFID angular-rate sensor and measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920032721.9U CN209280740U (en) | 2019-01-09 | 2019-01-09 | A kind of chipless RFID angular-rate sensor and measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209280740U true CN209280740U (en) | 2019-08-20 |
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| CN201920032721.9U Expired - Fee Related CN209280740U (en) | 2019-01-09 | 2019-01-09 | A kind of chipless RFID angular-rate sensor and measuring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596853A (en) * | 2019-01-09 | 2019-04-09 | 华南理工大学 | A kind of chipless RFID angular-rate sensor and measuring system and method |
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2019
- 2019-01-09 CN CN201920032721.9U patent/CN209280740U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109596853A (en) * | 2019-01-09 | 2019-04-09 | 华南理工大学 | A kind of chipless RFID angular-rate sensor and measuring system and method |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190820 |
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| CF01 | Termination of patent right due to non-payment of annual fee |