CN107576345A - The wireless measuring system and measuring method of multinode resonator type surface acoustic wave sensor - Google Patents
The wireless measuring system and measuring method of multinode resonator type surface acoustic wave sensor Download PDFInfo
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- CN107576345A CN107576345A CN201710601239.8A CN201710601239A CN107576345A CN 107576345 A CN107576345 A CN 107576345A CN 201710601239 A CN201710601239 A CN 201710601239A CN 107576345 A CN107576345 A CN 107576345A
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Abstract
The invention discloses a kind of wireless measuring system and measuring method of multinode resonator type surface acoustic wave sensor, it is mainly characterized by corresponding with the frequency band of each resonator type surface acoustic wave sensor, reader radiating circuit launches the pumping signal of multiple frequencies by multiple local vibration sources simultaneously, to measure the resonant frequency of multiple sensors simultaneously.Also, reader receiving circuit directly carries out bandpass sampling to amplification and filtered rf echo signal, then carries out frequency domain interpolation to the echo spectrum information after Fourier transformation.It is of the invention with traditional reader using single local vibration source, the resonant frequency of each sensor is measured by polling mode compared with, it measures real-time and increased substantially, and improves measurement accuracy by frequency domain interpolation method.In addition, because reader receiving circuit is by the way of the direct bandpass sampling of radiofrequency signal, eliminate lower frequency changer circuit, be not only simple in structure, cost it is low, while also improve signal to noise ratio.
Description
Technical field：
The present invention relates to a kind of wireless measuring system and measuring method of multinode resonator type surface acoustic wave sensor, belong to
Wireless sensing field.
Background technology：
SAW device can be used as sensor, and two kinds of mode of resonance and delaying type can be divided into from structure, respectively such as Fig. 1 and
Shown in Fig. 2.Resonator type surface acoustic wave device is made up of piezoelectric substrate, interdigital transducer, reflecting grating, interdigital transducer both ends it is anti-
Penetrate grid to arrange in intensive array, to form acoustic resonant cavity.Delaying type SAW device interdigital is changed by piezoelectric substrate, input
Can device, output interdigital transducer composition.When SAW device is used as sensor, acoustic surface wave propagation is caused according to object to be measured
Speed and piezoelectric constants change, and further result in resonant frequency change or the delaying type sound of resonator type surface acoustic wave device
The time delay of surface wave device, phase place change realize sensing function.
Under the cooperation of reader and antenna, surface acoustic wave sensor is while wireless sensing also without power supply.Sound
It is its radio function and passive essence that surface wave sensor is most noticeable, therefore obtains very big concern.With delaying type
Surface acoustic wave sensor is compared, and the Q values (quality factor) of resonator type surface acoustic wave sensor are higher, the wireless survey under equal conditions
Span is from farther, and electro-acoustic and sound-electric conversion are carried out by same interdigital transducer, are more easy to realize by same antenna
Reception of the sensor to pumping signal and the emission function to echo-signal, therefore the application in wireless sensing field is more wide
It is general.
In the practical application of wireless sensing, single sensor will not be generally only existed, but multiple sensors are with more
The form of individual node exists simultaneously.Such as detect, needed in On-line sampling system cabinet not for the temperature of high-tension switch cabinet of intelligent grid
With the node temperature of position；Detected for the Shaft Torque of engine, need the node of diverse location in On-line sampling system rotating shaft
Moment of torsion.The mode of resonator type surface acoustic wave sensor generally use frequency division multiple access is to realize that the anticollision of multiple nodes measures, i.e.,
The frequency band of each sensor is different.In multinode wireless measurement, many nodes also occur in pairs with differential-type structure.Such as
In the temperature detection of high-tension switch cabinet, by differential-type structure with eliminate antenna impedance change etc. other environmental factors to thermometric
As a result influence；In the moment of torsion detection of rotating shaft, by differential-type structure to eliminate the environmental factors such as temperature to torque measurement knot
The influence of fruit.The measurement of differential frequency is realized for above-mentioned differential-type node, and by the way of frequency division multiple access.
For the wireless measurement of multinode resonator type surface acoustic wave sensor, problems with presently, there are：
(1) traditional reader emission link there is normally only single local vibration source, only launch the excitation of single frequency point every time
Signal, the resonant frequency of each sensor is measured with polling mode.When number of nodes is more, poll time is elongated, so as to shadow
Ring the real-time of measurement.
(2) for differential-type node, because measurement of the polling mode to two differential transducers is there is the time difference,
In the case of object to be measured is fast-changing, not only measurement result can produce larger error, also can not accurate measurements objects to be measured
Dynamic changing process.
(3) traditional reader receives link generally use down coversion structure, not only circuit structure is complicated, cost is high, and
And also increase there is noise, signal to noise ratio reduce the problems such as.
(4) measurement accuracy of resonator type surface acoustic wave sensor depends on the estimated accuracy of resonant frequency.For Fourier
The method for converting frequency measurement spectrum, in view of the limitation of spectral resolution, the estimated accuracy of resonant frequency is relatively low；Intensity is surveyed according to frequency sweep
Resonant frequency method of estimation, it is necessary to improve estimated accuracy by the subdivision of step frequency, then the poll time of multiple nodes
To be drastically elongated, measurement real-time is further affected.
The content of the invention：
The present invention is to provide a kind of multinode resonator type surface acoustic wave to solve the above-mentioned problems of the prior art
The wireless measuring system and measuring method of sensor, the purpose is to the practical application sensed for surface acoustic wave wireless, work as measurement
When system includes multiple resonator type surface acoustic wave sensors, corresponding solution is provided for the relevant issues that presently, there are.
The present invention adopts the following technical scheme that：A kind of wireless measuring system of multinode resonator type surface acoustic wave sensor,
It is made up of reader and several resonator type surface acoustic wave sensor nodes；Wherein：Several resonator type surface acoustic wave sensors
Node is divided into two types, and one kind is plain edition node, i.e., the node only one resonator type surface acoustic wave sensor, another kind are
Differential-type node, the i.e. node include two resonator type surface acoustic wave sensors；Each resonator type surface acoustic wave sensor has
Adjacent but each nonoverlapping frequency band each other；Corresponding with the frequency band of each resonator type surface acoustic wave sensor, reader is simultaneously
Launch the pumping signal of multiple frequencies, to measure the resonant frequency of all resonator type surface acoustic wave sensors simultaneously.
Further, the reader is by transmitter module, transceiver insulation module, Anneta module, receiving module and signal
Processing module is formed.
Further, the transmitter module is by more local oscillator source modules, bandpass filter module and radio-frequency power amplifier
Module composition.
Further, more local oscillator source modules are by multiple completely identical in structure phase-locked loop modules and combiner module structure
Into；Wherein, the input port quantity of the quantity of phase-locked loop module and combiner module all with resonator type surface acoustic wave sensor
Quantity it is identical, the output end of each phase-locked loop module is connected with each input port of combiner module respectively.
Further, the phase-locked loop module uses program control phase-locked loop chip, and each phase-locked loop module has identical ginseng
Examine frequency, by the difference of Clock Multiplier Factor come produce from the resonant frequency of each resonator type surface acoustic wave sensor corresponding to it is different
The pumping signal of frequency.
Further, the frequency band of the Anneta module of the reader covers the frequency of all resonator type surface acoustic wave sensors
Band.
Further, the receiving module of the reader includes low noise RF amplifier modules, bandpass filter module
And radiofrequency signal band logical sampling module；Wherein, radiofrequency signal band logical sampling module directly returns to amplification and filtered radio frequency
Ripple signal carries out bandpass sampling.
Further, the signal processing module of the reader senses to all resonator type surface acoustic waves that include received
The echo-signal of device carries out Fourier transformation, obtains complete echo spectrum information, then searches and resonator type surface acoustic wave
Multiple spectrum maximums corresponding to number of sensors, carry out frequency domain interpolation respectively near each spectrum maximum afterwards, with
Obtain the resonant frequency of each resonator type surface acoustic wave sensor.
The present invention also adopts the following technical scheme that：A kind of wireless measuring system of multinode resonator type surface acoustic wave sensor
Measuring method, job step is as follows：
Step A, the transmitter module of reader produce the pumping signal for including multiple frequencies by more local oscillator source modules first,
Then bandpass filtering and power amplification are carried out, after launched through transceiver insulation module by Anneta module；
Step B, each resonator type surface acoustic wave sensor by sensor antenna receive that reader launches comprising more
The pumping signal of individual frequency, the surface acoustic wave of corresponding frequencies is produced along piezoelectricity by interdigital transducer frequency-selecting and through inverse piezoelectric effect
Substrate surface is propagated to both sides, through the multiple coherent reflection of reflecting grating and is superimposed, standing wave is formed in resonator, then change by interdigital
Energy device is converted into electromagnetic wave through direct piezoelectric effect, and the echo of each sensor is transmitted back into reader through sensor antenna, when
When the pumping signal of reader is modulated to intermittency signal through transceiver insulation module, the echo-signal of each sensor for amplitude at any time
Between exponentially rule decay double-sideband signal, its carrier frequency is consistent with the sensor resonant frequency with object variation to be measured；
Step C, reader receive the echo-signal of all the sensors superposition through Anneta module, entered by transceiver insulation module
Enter receiving module, radiofrequency signal bandpass sampling module is entered after low noise amplification, bandpass filtering, obtain echo data signal；
Step D, echo data signal entering signal processing module, obtained by Fourier transformation and include all mode of resonance sound
The spectrum information of surface wave sensor resonant frequency, then search corresponding with resonator type surface acoustic wave number of sensors multiple
Spectrum maximum, carry out frequency domain interpolation respectively near each spectrum maximum again afterwards, it is each more precisely to obtain
The resonant frequency of individual resonator type surface acoustic wave sensor；
Step E, for plain edition node, the node is measured according to the resonant frequency of corresponding resonator type surface acoustic wave sensor
The object value to be measured at place, for differential-type node, according to the resonant frequency of two differential-type resonator type surface acoustic wave sensors it
Difference measures the object value to be measured at the node.
The present invention has the advantages that：
(1) reader launches the pumping signal of multiple frequencies by multiple local vibration sources simultaneously, to measure multiple biographies simultaneously
The resonant frequency of sensor, compared with traditional reader uses single local vibration source, measured by polling mode, it measures real-time
Increased substantially；
(2) for differential-type node, in the case of object to be measured is fast-changing, it is differential to two to avoid polling mode
The measurement of type sensor not only significantly reduces measurement error there is the problem of the time difference, also can relatively accurately supervise
Survey the dynamic changing process of object to be measured；
(3) reader receiving circuit is eliminated under conventional reader by the way of the direct bandpass sampling of radiofrequency signal
Frequency changer circuit, be not only simple in structure, cost it is low, while also improve signal to noise ratio；
(4) reader carries out frequency domain interpolation to the echo spectrum information after Fourier transformation, improves estimating for resonant frequency
Precision is counted, so as to which the object value to be measured obtained is more accurate.
Brief description of the drawings：
Fig. 1 is resonator type surface acoustic wave device.
Fig. 2 is delaying type SAW device.
Fig. 3 is the wireless measuring system structure of multinode resonator type surface acoustic wave sensor.
Fig. 4 is the reader structure of system.
Fig. 5 is the transmitter module structure of system.
Fig. 6 is more local vibration source modular structures of system.
Fig. 7 is the receiving module structure of system.
Fig. 8 is the signal processing module function of system.
Embodiment：
Technical scheme is described in further detail below in conjunction with the accompanying drawings：
It refer to shown in Fig. 3, the wireless measuring system of multinode resonator type surface acoustic wave sensor of the present invention is by reader
Formed with several resonator type surface acoustic wave sensor nodes；Wherein：Several resonator type surface acoustic wave sensor nodes are divided into
Two types, one kind is plain edition node, i.e. the node only one resonator type surface acoustic wave sensor, and another kind is differential-type section
Point, the i.e. node include two resonator type surface acoustic wave sensors；Each resonator type surface acoustic wave sensor have it is adjacent but that
This each nonoverlapping frequency band；Corresponding with the frequency band of each resonator type surface acoustic wave sensor, reader is launched multiple simultaneously
The pumping signal of frequency, to measure the resonant frequency of all resonator type surface acoustic wave sensors simultaneously.
It refer to shown in Fig. 4, reader is by transmitter module, transceiver insulation module, Anneta module, receiving module and signal
Processing module is formed.
It refer to shown in Fig. 5, transmitter module is by more local oscillator source modules, bandpass filter module and radio-frequency power amplifier
Module composition.
It refer to shown in Fig. 6, more local oscillator source modules are by multiple completely identical in structure phase-locked loop modules and combiner module
Form；Wherein, the input port quantity of the quantity of phase-locked loop module and combiner module all senses with resonator type surface acoustic wave
The quantity of device is identical, and the output end of each phase-locked loop module is connected with each input port of combiner module respectively.
Phase-locked loop module uses program control phase-locked loop chip, and each phase-locked loop module has identical reference frequency, by again
The difference of frequency coefficient is believed to produce the excitation of different frequent points corresponding with the resonant frequency of each resonator type surface acoustic wave sensor
Number.
It refer to shown in Fig. 3, Fig. 4, the frequency band of the Anneta module of reader is wider, covers all resonator type surface acoustic waves
The frequency band of sensor.
It refer to shown in Fig. 7, the receiving module of reader includes low noise RF amplifier modules, bandpass filter module
And radiofrequency signal band logical sampling module；Wherein, radiofrequency signal band logical sampling module directly returns to amplification and filtered radio frequency
Ripple signal carry out bandpass sampling, eliminate down coversion link, avoid the noise caused by downconversion process increase, signal to noise ratio drop
Low problem.
It refer to shown in Fig. 8, the signal processing module of reader passes to all resonator type surface acoustic waves that include received
The echo-signal of sensor carries out Fourier transformation, obtains complete echo spectrum information, then searches and mode of resonance sound surface
Multiple spectrum maximums corresponding to wave sensor quantity, frequency domain is carried out respectively near each spectrum maximum again afterwards and is inserted
Value, more precisely to obtain the resonant frequency of each resonator type surface acoustic wave sensor.
It refer to shown in Fig. 3, the measurement side of the wireless measuring system of multinode resonator type surface acoustic wave sensor of the present invention
Method, job step are as follows：
Step A, the transmitter module of reader produce the pumping signal for including multiple frequencies by more local oscillator source modules first,
Then bandpass filtering and power amplification are carried out, after launched through transceiver insulation module by Anneta module；
Step B, each resonator type surface acoustic wave sensor by sensor antenna receive that reader launches comprising more
The pumping signal of individual frequency, the surface acoustic wave of corresponding frequencies is produced along piezoelectricity by interdigital transducer frequency-selecting and through inverse piezoelectric effect
Substrate surface is propagated to both sides, through the multiple coherent reflection of reflecting grating and is superimposed, standing wave is formed in resonator, then change by interdigital
Energy device is converted into electromagnetic wave through direct piezoelectric effect, and the echo of each sensor is transmitted back into reader through sensor antenna, when
When the pumping signal of reader is modulated to intermittency signal through transceiver insulation module, the echo-signal of each sensor for amplitude at any time
Between exponentially rule decay double-sideband signal, its carrier frequency is consistent with the sensor resonant frequency with object variation to be measured；
Step C, reader receive the echo-signal of all the sensors superposition through Anneta module, entered by transceiver insulation module
Enter receiving module, radiofrequency signal bandpass sampling module is entered after low noise amplification, bandpass filtering, obtain echo data signal；
Step D, echo data signal entering signal processing module, obtained by Fourier transformation humorous comprising all the sensors
The spectrum information of vibration frequency, multiple spectrum maximums corresponding with number of sensors are then searched, afterwards again in each frequency
Spectrum vicinity carries out frequency domain interpolation respectively, more precisely to obtain the resonant frequency of each sensor；
Step E, for plain edition node, the object to be measured at the node is measured according to the resonant frequency of respective sensor
Value, for differential-type node, the object value to be measured at the node is measured according to the difference of the resonant frequency of two differential transducers.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, some improvement can also be made under the premise without departing from the principles of the invention, and these improvement also should be regarded as the present invention's
Protection domain.
Claims (9)
- A kind of 1. wireless measuring system of multinode resonator type surface acoustic wave sensor, it is characterised in that：By reader and some Individual resonator type surface acoustic wave sensor node is formed；Wherein：Several resonator type surface acoustic wave sensor nodes are divided into two species Type, one kind is plain edition node, i.e. the node only one resonator type surface acoustic wave sensor, and another kind is differential-type node, i.e., The node includes two resonator type surface acoustic wave sensors；Each resonator type surface acoustic wave sensor have it is adjacent but each other it is each not Overlapping frequency band；Corresponding with the frequency band of each resonator type surface acoustic wave sensor, reader launches multiple frequencies simultaneously Pumping signal, to measure the resonant frequency of all resonator type surface acoustic wave sensors simultaneously.
- 2. the wireless measuring system of multinode resonator type surface acoustic wave sensor as claimed in claim 1, it is characterised in that：Institute Reader is stated to be made up of transmitter module, transceiver insulation module, Anneta module, receiving module and signal processing module.
- 3. the wireless measuring system of multinode resonator type surface acoustic wave sensor as claimed in claim 2, it is characterised in that：Institute Transmitter module is stated to be made up of more local oscillator source modules, bandpass filter module and radio-frequency power amplifier module.
- 4. the wireless measuring system of multinode resonator type surface acoustic wave sensor as claimed in claim 3, it is characterised in that：Institute More local oscillator source modules are stated by multiple completely identical in structure phase-locked loop modules and combiner module composition；Wherein, phase-locked loop module Quantity and combiner module input port quantity it is all identical with the quantity of resonator type surface acoustic wave sensor, each lock phase The output end of ring moulds block is connected with each input port of combiner module respectively.
- 5. the wireless measuring system of multinode resonator type surface acoustic wave sensor as claimed in claim 4, it is characterised in that：Institute State phase-locked loop module and use program control phase-locked loop chip, each phase-locked loop module has identical reference frequency, passes through Clock Multiplier Factor Difference produce the pumping signal of different frequent points corresponding with the resonant frequency of each resonator type surface acoustic wave sensor.
- 6. the wireless measuring system of multinode resonator type surface acoustic wave sensor as claimed in claim 2, it is characterised in that：Institute The frequency band for stating the Anneta module of reader covers the frequency band of all resonator type surface acoustic wave sensors.
- 7. the wireless measuring system of multinode resonator type surface acoustic wave sensor as claimed in claim 2, it is characterised in that：Institute Stating the receiving module of reader includes low noise RF amplifier modules, bandpass filter module and the sampling of radiofrequency signal band logical Module；Wherein, radiofrequency signal band logical sampling module directly carries out bandpass sampling to amplification and filtered rf echo signal.
- 8. the wireless measuring system of multinode resonator type surface acoustic wave sensor as claimed in claim 2, it is characterised in that：Institute The signal processing module for stating reader carries out Fu to the echo-signal including all resonator type surface acoustic wave sensors received In leaf transformation, obtain complete echo spectrum information, then search corresponding with resonator type surface acoustic wave number of sensors more Individual spectrum maximum, frequency domain interpolation is carried out respectively near each spectrum maximum afterwards, to obtain each mode of resonance sound The resonant frequency of surface wave sensor.
- A kind of 9. measurement side of the wireless measuring system of multinode resonator type surface acoustic wave sensor as claimed in claim 1 Method, it is characterised in that：Job step is as follows：Step A, the transmitter module of reader produce the pumping signal for including multiple frequencies by more local oscillator source modules first, then Carry out bandpass filtering and power amplification, after launched through transceiver insulation module by Anneta module；Step B, each resonator type surface acoustic wave sensor by sensor antenna receive reader launch include multiple frequencies The pumping signal of point, the surface acoustic wave of corresponding frequencies is produced along piezoelectric substrate by interdigital transducer frequency-selecting and through inverse piezoelectric effect Surface is propagated to both sides, through the multiple coherent reflection of reflecting grating and is superimposed, standing wave is formed in resonator, then pass through interdigital transducer Electromagnetic wave is converted into through direct piezoelectric effect, and the echo of each sensor is transmitted back to reader through sensor antenna, works as reading When the pumping signal of device is modulated to intermittency signal through transceiver insulation module, the echo-signal of each sensor is in the time for amplitude The double-sideband signal of exponential law decay, its carrier frequency are consistent with the sensor resonant frequency with object variation to be measured；Step C, reader receive the echo-signal of all the sensors superposition through Anneta module, are entered by transceiver insulation module and connect Module is received, radiofrequency signal bandpass sampling module is entered after low noise amplification, bandpass filtering, obtains echo data signal；Step D, echo data signal entering signal processing module, obtained by Fourier transformation and include all mode of resonance sound surfaces The spectrum information of wave sensor resonant frequency, then search multiple frequency spectrums corresponding with resonator type surface acoustic wave number of sensors Maximum, carry out frequency domain interpolation respectively near each spectrum maximum again afterwards, it is humorous more precisely to obtain each The resonant frequency of vibration shape surface acoustic wave sensor；Step E, for plain edition node, measured according to the resonant frequency of corresponding resonator type surface acoustic wave sensor at the node Object value to be measured, for differential-type node, surveyed according to the difference of the resonant frequency of two differential-type resonator type surface acoustic wave sensors Obtain the object value to be measured at the node.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108344800A (en) * | 2018-01-17 | 2018-07-31 | 浙江大学 | System for detecting temperature based on wireless passive sonic surface wave sensor and receive-transmit system |
| CN110068400A (en) * | 2019-04-26 | 2019-07-30 | 中北大学 | Aerospace flight vehicle multi-parameter monitoring system based on surface acoustic wave techniques |
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| CN112051566A (en) * | 2020-08-28 | 2020-12-08 | 浙江大学 | Moving part parameter measuring method based on SAW wireless passive sensing system |
| CN112668683A (en) * | 2020-12-25 | 2021-04-16 | 广州安的电子科技有限公司 | Intelligent safety door and detection method thereof |
| CN113029582A (en) * | 2021-03-10 | 2021-06-25 | 南京航空航天大学 | Aero-engine torque detection system and detection method based on surface acoustic wave label |
| CN114486008A (en) * | 2022-01-26 | 2022-05-13 | 中国电子科技集团公司第七研究所 | Flexible microstrip line, backscattering touch perception system and measuring method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007174130A (en) * | 2005-12-20 | 2007-07-05 | Teruya:Kk | Hybrid-type soft id tag with multi-communication corresponding sensor function |
| JP2007323555A (en) * | 2006-06-05 | 2007-12-13 | Telemidic Ltd | Saw type rfid |
| CN102636204A (en) * | 2012-05-08 | 2012-08-15 | 中国电子科技集团公司第五十五研究所 | Self-numbering surface acoustic wave (SAW) passive and wireless resonance type sensor |
| CN103336936A (en) * | 2013-06-17 | 2013-10-02 | 南京航空航天大学 | Acoustic surface wave reader emission link structure and working method thereof |
| CN103500318A (en) * | 2013-10-08 | 2014-01-08 | 南京航空航天大学 | SAW (Surface Acoustic Wave) reader receiving link circuit structure adopting ZIF (Zero Intermediate Frequency) IQ (In-phase Quadrature) demodulation technology and working method of SAW reader receiving link circuit structure |
| CN104296782A (en) * | 2014-10-08 | 2015-01-21 | 南京航空航天大学 | System and method for improving intensity of surface acoustic wave sensing signals |
| CN105608400A (en) * | 2016-01-08 | 2016-05-25 | 劭行（苏州）智能科技有限公司 | Surface-acoustic-wave wireless sensor reader and realization method thereof |
-
2017
- 2017-07-21 CN CN201710601239.8A patent/CN107576345B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007174130A (en) * | 2005-12-20 | 2007-07-05 | Teruya:Kk | Hybrid-type soft id tag with multi-communication corresponding sensor function |
| JP2007323555A (en) * | 2006-06-05 | 2007-12-13 | Telemidic Ltd | Saw type rfid |
| CN102636204A (en) * | 2012-05-08 | 2012-08-15 | 中国电子科技集团公司第五十五研究所 | Self-numbering surface acoustic wave (SAW) passive and wireless resonance type sensor |
| CN103336936A (en) * | 2013-06-17 | 2013-10-02 | 南京航空航天大学 | Acoustic surface wave reader emission link structure and working method thereof |
| CN103500318A (en) * | 2013-10-08 | 2014-01-08 | 南京航空航天大学 | SAW (Surface Acoustic Wave) reader receiving link circuit structure adopting ZIF (Zero Intermediate Frequency) IQ (In-phase Quadrature) demodulation technology and working method of SAW reader receiving link circuit structure |
| CN104296782A (en) * | 2014-10-08 | 2015-01-21 | 南京航空航天大学 | System and method for improving intensity of surface acoustic wave sensing signals |
| CN105608400A (en) * | 2016-01-08 | 2016-05-25 | 劭行（苏州）智能科技有限公司 | Surface-acoustic-wave wireless sensor reader and realization method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 夏前亮: "声表面波传感器测试电路研究", 《中国优秀硕士学位论文全文数据库信息科技辑》 * |
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| CN110208371A (en) * | 2019-05-13 | 2019-09-06 | 南京航空航天大学 | A kind of surface acoustic wave sensor node structure and measurement method measuring soil moisture content |
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| CN114486008A (en) * | 2022-01-26 | 2022-05-13 | 中国电子科技集团公司第七研究所 | Flexible microstrip line, backscattering touch perception system and measuring method thereof |
| CN114486008B (en) * | 2022-01-26 | 2023-08-04 | 中国电子科技集团公司第七研究所 | Flexible microstrip line, back scattering touch perception system and measuring method thereof |
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