CN109696666A - Microwave Active beacon multiple spot microdisplacement measurement method and system - Google Patents
Microwave Active beacon multiple spot microdisplacement measurement method and system Download PDFInfo
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- CN109696666A CN109696666A CN201710998533.7A CN201710998533A CN109696666A CN 109696666 A CN109696666 A CN 109696666A CN 201710998533 A CN201710998533 A CN 201710998533A CN 109696666 A CN109696666 A CN 109696666A
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- 238000000691 measurement method Methods 0.000 title claims abstract description 10
- 238000005259 measurement Methods 0.000 claims abstract description 64
- 238000006073 displacement reaction Methods 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims abstract description 9
- 239000000284 extract Substances 0.000 claims abstract description 6
- 238000012360 testing method Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 230000001427 coherent effect Effects 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a kind of " Microwave Active beacon microdisplacement measurement method and system ", and technical field belongs to measuring instrument field.In the present invention, active beacon is placed on measured point, and beacon sends the constant microwave signal of initial phase, and measurement point extracts its phase information upon receipt of the signal, by comparing the phase change of signal is received every time, to calculate the micro-displacement variation of measurement point and measured point；Radio-frequency tag function is introduced, identification and the anticollision of multiple test point active beacons are completed according to RFID air interface communication protocol specification；Meanwhile proposing under distributed measurement mode, complicated measurement task is efficiently completed by the multiple measurement hosts of reasonable Arrangement and active beacon.The measurement that the invention solves conventional micro-displacement measuring system is closer, overall structure is complicated, multiple spot while measuring difficulty, being unable to complete the problems such as three-D displacement measurement and measurement process are cumbersome.
Description
Technical field
Fields of measurement, more particularly to microdisplacement measurement field.
Background technique
It the use of the basic skills that microwave technology carries out microdisplacement measurement is all at present to compare signal and the survey of measured point return
Phase difference between the transmitting signal of amount point obtains the amount of micro-displacement between two o'clock by the variation resolving of the two phase difference.Mesh
Preceding measuring technique, such as patent of invention CN200310113925.9 " a kind of microdisplacement measurement technology ", distinct issues are when survey
When amount point increases with measured point distance, receives signal and be reduced to measuring system sensitivity soon hereinafter, leading to not measure；Hair
Bright patent CN201310067245.1 " remote micro-displacement measuring system " is although use coherent active reflector generation in measured point
The measurement distance of system is increased for the corner reflector in patent of invention CN200310113925.9, basic principle is still
The phase change resolved between receiving and transmitting signal carries out ranging, and in addition the measurement point of the measuring system and tested point device require high property
The transmitting of energy and receiving module, overall structure is more complicated, and the ability that multiple spot measures simultaneously is limited；Patent of invention
CN201310224629.X " the microdisplacement measurement method and system based on range gate deception technology " is also to use microwave coherent reflection
Device replaces corner reflector, while having used for reference the range gate deception technology in radar electronic warfare field, solves and closes on multiple spot while measuring
The problem of, basic principle still resolves the phase change between receiving and transmitting signal and carries out ranging, and in addition the measuring system is in addition to measurement
Point and tested point device require high performance transmitting and receiving module, and close two neighboring due to needing to solve
The resolution problems of measurement point, signal processing are more complicated.For this purpose, the present invention proposes that a kind of Microwave Active beacon multiple spot micro-displacement is surveyed
Method and system are measured, the remote of distributed multiple spot micro-displacement can be effectively realized with fairly simple mode while being measured,
And the three-dimensional microdisplacement measurement that host further completes tested point can be measured by reasonable Arrangement.
Summary of the invention
In this Microwave Active beacon multiple spot micro-displacement measuring system, active beacon is placed on measured point, and beacon is sent just
The microwave signal of beginning phase-constant, measurement point extract its phase information upon receipt of the signal, receive every time by comparing
The phase change of signal is described below to calculate the micro-displacement variation of measurement point and measured point:
Microwave Active beacon multiple spot micro-displacement measuring system is as shown in the picture, and it is active beacon functional group that dotted line frame (a) is interior in figure
At interior dotted line frame (b) is measurement host function composition.High stable coincidence frequency source 1 in active beacon (a) generates initial phase
Stable high-frequency signal, the signal generate by waveform and are sent into microwave band-pass power amplification function mould after modulation function module 2
Block 3 is sent into circulator 4 after power amplification, is then delivered to antenna 5 and launches, wherein communication is complete with control function module 6
At the communication and measurement of correlation operational order with measurement host, power supply function module 7 provides work and suspend mode shape to active beacon
State power supply.After the antenna 8 of measurement host (b) receives the signal of active beacon transmitting, band logical low noise is sent to by circulator 9
Enlarging function module 10 is then sent through high stop band microwave band-pass filter functional module 11, is then sent through high-precision A/D mapping function mould
Block 12 carries out data acquisition and storage, is then sent through signal processing function module 13 and carries out phase letter by way of hardware, software
Breath extracts, and is finally sent to terminal processes and display function module 14, wherein communication is completed and active letter with control function module 15
Target communication and measurement of correlation operational order, power supply function module 16 provide working power to measurement host.Radio-frequency tag function
Identification function of the module 17,18 to meet multimetering and active beacon.
Detailed description of the invention
Dotted line frame (a) is active beacon function composition block diagram in Fig. 1, and dotted line frame (b) is measurement host function composition block diagram,
1 is high stable coincidence frequency source, and 2 be waveform generation and modulation function module, and 3 be microwave band-pass power amplification functional module, and 4 are
Circulator, 5 be the dual-mode antenna of active beacon, and 6 be communication and control function module, and 7 be power supply function module, and 8 be measurement master
The dual-mode antenna of machine, 9 be circulator, and 10 be band logical low noise amplification functional module, and 11 be high stop band microwave band-pass filter function
Energy module, 12 be high-precision A/D transform function module, and 13 be signal processing function module, and 14 be terminal processes and display function
Module, 15 be communication and control function module, and 16 be power supply function module, and 17,18 be radio-frequency tag function module.
3 kinds of multiple spot distributed measurement modes are shown in Fig. 2, dotted line frame (c) is that a measurement host collocation is multiple micro-
The measurement pattern of wave active beacon, wherein 19 be measurement host, 20,21,22 be Microwave Active beacon；Dotted line frame (d) is one
Microwave Active beacon is arranged in pairs or groups the measurement patterns of multiple measurement hosts, wherein 23 be Microwave Active beacon, 24,25,26 be measurement master
Machine；Dotted line frame (e) is that multiple measurement hosts are arranged in pairs or groups the measurement patterns of multiple Microwave Active beacons, wherein 27,28,29 be measurement master
Machine, 30,31 be Microwave Active beacon.
Specific embodiment
The firm placement active beacon in measured point, the firm placement of measurement point measure host.
Active beacon sends the constant microwave measuring signals of initial phase, and beacon has 3 kinds of working conditions: first is that according to measurement
Point host command requires to wake up booting, then sends microwave measuring signals；Second is that booting is automatically waken up at interval of the regular hour,
Then microwave measuring signals are sent；Third is that being always maintained at open state, microwave measuring signals are sent with certain fixed repetition period.
In order to solve phase fuzzy problem, transmitting signal form can use the Different Modulations such as QPSK or SQPSK,
Multifrequency signal can be used.
High stable coincidence frequency source can be used mature DDS technology and build, in order to further increase sensitivity and hair be inhibited to receive
Harass, the stopband attenuation of Yao Tigao microwave band-pass filter BPF, and takes pulse compression, matching filter between transmitting, reception
The maturation means such as wave.
Direct orthogonalization A/D high-speed sampling stick signal phase is believed after measurement point receives the microwave signal that active beacon is sent
Breath, signal processing directly extracts phase information by software realization completely by whole phase FFT scheduling algorithm, and analyzes each secondary echo
Phase change is to calculate the movement of distance；Or each secondary echo-signal is stored, then pass through the side of hardware handles
Formula sequential reads out and passes through the phase difference of more each secondary echo of phase discriminator to calculate the movement of distance.
To meet multiple spot distributed measurement demand, each active beacon is owned by unique RF tag, according to RFID sky
Middle interface communications protocol specification completes identification and the anticollision of multiple test point active beacons, at this time can between active beacon
To require the close arrangement leaned on according to actual test, neighbor distance is not required, because two tested points are not needed by micro-
Wave signal distance picture is differentiated.
In addition to the microdisplacement measurement between most basic two o'clock, when implementing multiple spot distributed measurement, there are 3 kinds of modes: one
It is the multiple active beacons of measurement host collocation；Multiple measurement hosts second is that a Microwave Active beacon is arranged in pairs or groups, pass through conjunction
Reason arranges the seat in the plane of multiple measurement hosts, to complete the three-dimensional microdisplacement measurement to some tested point；Third is that multiple microwaves have
The multiple measurement hosts of source beacon collocation, to complete the three-dimensional microdisplacement measurement of more tested points.Pass through the multiple measurements of reasonable Arrangement
The seat in the plane of host can further calculate the three-dimensional micro-displacement of tested point.
The antenna for measuring host is oriented antenna, and the antenna of active beacon is omnidirectional antenna, in engineering survey use
Each active beacon can be flexibly installed in measurement master machine antenna beam coverage according to actual conditions.
Finally, it is stated that preferred embodiment above is only used for, the technical schemes of the invention are described in detail and is not to this hair
The limitation of bright protection scope, it should be apparent to a person skilled in the art that based on the technical solution of the present invention, not by wound
The various changes that the property made labour makes it in form and details are still within protection scope of the present invention.
Claims (7)
1. Microwave Active beacon multiple spot microdisplacement measurement method and system, the system is by the Microwave Active beacon of tested point and measurement
Host two parts composition of point, which is characterized in that active beacon sends the constant microwave signal of initial phase, measurement from tested point
Point extracts its phase information upon receipt of the signal, by comparing the phase change of signal is received every time, to calculate
The variation of the micro-displacement of measurement point and measured point；Meanwhile the system introduces RFID tag functional module, can complete multiple
The remote of distributed micro-displacement of measurement point measures simultaneously, and the three-dimensional micro-displacement that can further complete tested point is surveyed
Amount.
2. Microwave Active beacon multiple spot microdisplacement measurement method and system according to claim 1, which is characterized in that
Measuring point directly transmits coherent measuring signal by Microwave Active beacon, and measurement point only receives the measuring signal, and extracts phase letter
Breath, the measurement of micro-displacement can be completed back and forth between two measurement points by not needing microwave signal.
3. Microwave Active beacon multiple spot microdisplacement measurement method and system according to claim 1, which is characterized in that active
Beacon has 3 kinds of working conditions: first is that requiring to wake up booting according to measurement point host command, then sending microwave measuring signals；Two
It is to automatically wake up booting at interval of the regular hour, then sends microwave measuring signals；Third is that open state is always maintained at, with certain
Fixed repetition period sends microwave measuring signals.
4. Microwave Active beacon multiple spot microdisplacement measurement method and system according to claim 1, which is characterized in that phase
The extraction of information is by whole phase FFT scheduling algorithm completely by software realization；Or each secondary echo-signal is stored, then lead to
The mode for crossing hardware handles sequential reads out and passes through the phase difference of more each secondary echo of phase discriminator.
5. Microwave Active beacon multiple spot microdisplacement measurement method and system according to claim 1, which is characterized in that each
Active beacon is owned by unique RF tag, completes multiple active letters of test point according to RFID air interface communication protocol specification
Target identification and anticollision.
6. the arrangement of active beacon is to mutual at this time because two tested points do not need to be differentiated by microwave signal Range Profile
The distance between do not require.
7. Microwave Active beacon multiple spot microdisplacement measurement method and system according to claim 1, which is characterized in that multiple spot
Distributed measurement mode, mode can be the multiple measurement hosts of active beacon collocation；It is also possible to a measurement host
It arranges in pairs or groups multiple active beacons；It can also be the multiple measurement hosts of multiple active beacons collocation, pass through the multiple measurements of reasonable Arrangement and lead
The seat in the plane of machine can further calculate the three-dimensional micro-displacement of tested point.
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| CN201710998533.7A CN109696666B (en) | 2017-10-24 | 2017-10-24 | Microwave active beacon multipoint micro-displacement measurement method and system |
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| CN201710998533.7A CN109696666B (en) | 2017-10-24 | 2017-10-24 | Microwave active beacon multipoint micro-displacement measurement method and system |
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| CN109696666B CN109696666B (en) | 2024-06-28 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0837743A (en) * | 1994-07-22 | 1996-02-06 | Nissan Motor Co Ltd | Microwave transmitting device |
| DE19612876A1 (en) * | 1996-03-30 | 1997-10-02 | Zeiss Carl Jena Gmbh | Microwave measuring system for position and coordinate measurements in machine tool |
| US6868073B1 (en) * | 2000-06-06 | 2005-03-15 | Battelle Memorial Institute K1-53 | Distance/ranging by determination of RF phase delta |
| CA2634105A1 (en) * | 2008-06-06 | 2009-12-06 | Lyngsoe Systems Ltd. | System and method for wireless communications |
| CN104808170A (en) * | 2015-04-24 | 2015-07-29 | 重庆大学 | Multipoint displacement simultaneous measuring method |
-
2017
- 2017-10-24 CN CN201710998533.7A patent/CN109696666B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0837743A (en) * | 1994-07-22 | 1996-02-06 | Nissan Motor Co Ltd | Microwave transmitting device |
| DE19612876A1 (en) * | 1996-03-30 | 1997-10-02 | Zeiss Carl Jena Gmbh | Microwave measuring system for position and coordinate measurements in machine tool |
| US6868073B1 (en) * | 2000-06-06 | 2005-03-15 | Battelle Memorial Institute K1-53 | Distance/ranging by determination of RF phase delta |
| CA2634105A1 (en) * | 2008-06-06 | 2009-12-06 | Lyngsoe Systems Ltd. | System and method for wireless communications |
| CN104808170A (en) * | 2015-04-24 | 2015-07-29 | 重庆大学 | Multipoint displacement simultaneous measuring method |
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| CN109696666B (en) | 2024-06-28 |
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Effective date of registration: 20190815 Address after: 610225 No. 187, Great Wall Road Section, Southwest Airport Economic Development Zone, Shuangliu District, Chengdu City, Sichuan Province Applicant after: SICHUAN JIAOAO INTELLIGENT CONTROL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 610047 No. 106, No. 5, No. 1, Unit 5, No. 10, West Section of Second Ring Road, Wuhou District, Chengdu City, Sichuan Province Applicant before: Hong Xicheng |
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Inventor after: Hong Xicheng Inventor after: Wang Jianjie Inventor after: Zhang Yabiao Inventor before: Hong Xicheng Inventor before: Zhang Yabiao |
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