CN109991598A - The real-time section survey device and method of array frequency modulated(FM) radar - Google Patents
The real-time section survey device and method of array frequency modulated(FM) radar Download PDFInfo
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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
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
- G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
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Abstract
The present invention relates to the real-time section survey device and methods of array frequency modulated(FM) radar.The measuring device includes: an aerial array (20), for transmitting and receiving radar signal, and the transmitting and received radar signal are the electromagnetic impulse sequence that frequency gradually changes；One chip (30), it can generate and adjust the radar signal of each antenna (21) transmitting in the aerial array (20), the radar signal reflected by the interface of the section is received from the antenna (21), carries out the radar signal of transmitting and received radar signal to be processed and converted to digital signal storing；With a data processing and input/output module (40), the thickness of each layer of the distance between the interface of the section and the antenna (21) of the aerial array (20) and/or the section can be calculated according to the digital signal；And receive user input the radar signal parameters for transmission to the chip (30) to generate radar signal.
Description
Technical field
The present invention relates to section survey technical field more particularly to the real-time section survey devices of array frequency modulated(FM) radar, and
The method of the section of a measurand is measured with the real-time section survey device of the array frequency modulated(FM) radar.
Background technique
In process industrial, such as steel industry, the section for needing to measure certain an object is frequently encountered.The section includes multiple
Several dielectric layers stack.A kind of existing section survey method is the measurement method using contact.The spy that will be measured
Head, such as radar probe are inserted into measurand and measure.For certain objects, such as high temperature, corrosion etc., contact
Measurement method is just less applicable in.Existing another kind section survey method is to be measured using artificial mode using probe,
It not can be carried out real-time measurement.Another existing section survey method is made using the cooperation of two or more radar measurement systems
With it is expensive, there are certain requirements to installation space.
Summary of the invention
An object of the present invention is to provide the real-time section survey device and method of array frequency modulated(FM) radar, can be non-contact
Ground, in real time Measure section, integrated level are high, small in size.
One aspect of the present invention provides the real-time section survey device of array frequency modulated(FM) radar, comprising:
One aerial array, radar signal, transmitting and received radar signal gradually become for transmitting and receiving for frequency
The electromagnetic impulse sequence of change；
One chip can generate and adjust the radar signal of each antenna transmitting in aerial array, receive quilt from antenna
The radar signal of the interface reflection of section, carries out the radar signal of transmitting and received radar signal to be processed and converted to number
Signal stores；With
Interface and the antenna array of section can be calculated in one data processing and input/output module according to digital signal
The thickness of each layer of the distance between antenna of column and/or section；And receive the parameter and biography of the radar signal of user's input
Chip is defeated by generate radar signal.The real-time section survey device of the array frequency modulated(FM) radar can measure non-contactly, in real time
Section, integrated level are high, small in size.
In a kind of schematical embodiment of the real-time section survey device of array frequency modulated(FM) radar, chip includes:
One radiofrequency signal and oscillation signals according synthesizer are capable of the radar signal and local oscillation letter of complex RF
Number；
One transmitting/reception isolator obtains the radar signal of synthesis from radiofrequency signal and oscillation signals according synthesizer
And it is sent to aerial array, the radar signal reflected from antenna array receiver, and the radar signal sent and received is isolated；
One simulation pre-low-noise amplifier, obtains received radar signal from transmitting/reception isolator and amplifies；
One frequency mixer obtains oscillation signals according from radiofrequency signal and oscillation signals according synthesizer, preposition from simulating
Low-noise amplifier obtains amplified radar signal, and oscillation signals according and amplified radar signal be mixed
To an intermediate-freuqncy signal；
One intermediate frequency signal processor, is filtered intermediate-freuqncy signal and amplifies；
The analog signal that intermediate frequency signal processor exports is converted to digital signal by one analog-digital converter；
One digital storage can store digital signal；With
One controller can control the collaborative work of each device in chip.
The chip structure is simple, and integrated level is high, can be mixed by emitting the signal for carrying out frequency domain with received radar signal
Frequency is handled, obtained digital signal convenient for calculate in subsequent applications interface or point and aerial array in interface antenna away from
From, and then the thickness of each layer of the section of measurand is calculated, draw two dimension or three-dimensional figure of the section of measurand etc..
In the schematical embodiment of another kind of the real-time section survey device of array frequency modulated(FM) radar, data processing and defeated
Entering output module includes a data processing and imaging unit, data can be obtained from digital storage and section is calculated
Each interface and the distance between the antenna of aerial array, and form the two-dimensional/three-dimensional image of section.Data processing and imaging
Unit by the two-dimensional/three-dimensional image of the section export to imaging device carry out image display (such as display, augmented reality,
Virtual reality etc.), the user that is more convenient for checks the section information of measurand.
In another schematical embodiment of the real-time section survey device of array frequency modulated(FM) radar, data processing and defeated
Entering output module further includes an at least interface, is USB interface, PROFINET interface, wireless PLC interface and 4-20mA communication
One or more of interface.A variety of different interfaces be conducive to the measuring device and external equipment (such as remote control center,
User computer, industrial cloud) it is communicated.
In another schematical embodiment of the real-time section survey device of array frequency modulated(FM) radar, data processing and at
As unit can also receive and store the parameter of the radar signal to match with each interface of measurand；Radiofrequency signal and sheet
Machine oscillator signal synthesizer obtains the parameter of the radar signal from data processing and imaging unit from digital storage to synthesize
The radar signal of radio frequency.User can easily (such as pass through interface) to data processing and imaging unit input radar signal
Parameter, each interface correspond to one group of parameter of radar signal, convenient for adjusting radar signal, user according to measurand when measurement
Just.
It further include one first in another schematical embodiment of the real-time section survey device of array frequency modulated(FM) radar
Pcb board, aerial array and integrated chip are on the first pcb board.In this way, further improving integrated level.
In another schematical embodiment of the real-time section survey device of array frequency modulated(FM) radar, radiofrequency signal and sheet
Machine oscillator signal synthesizer includes:
One RF signal synthesizer, for the radar signal of complex RF, the radar signal of radio frequency is triangular wave or sawtooth
Wave；With
One oscillation signals according synthesizer, for generating oscillation signals according, oscillation signals according is the sine wave of radio frequency
Signal.
Another aspect of the present invention provides the method that the section of a measurand is measured with the device, measurand
Section includes at least one first interface and a second contact surface, this method comprises:
The parameters for transmission of the radar signal of data processing and input/output module reception user's input is to chip to generate
Radar signal, radar signal include one first transmitting signal, emit signal with the first interphase match and one second, with the second boundary
Face matching；
To the first transmitting signal of measurand transmitting and one first reflection signal is received using the antenna of aerial array, first
Reflection signal is the signal that the first transmitting signal is reflected by the first interface；
Chip receives the first reflection signal from antenna, and the first transmitting signal and the first reflection signal are handled and converted
It is stored at one first digital signal；
To the second transmitting signal of measurand transmitting and one second reflection signal is received using the antenna of aerial array, second
Reflection signal is the signal that the second transmitting signal is reflected by second contact surface；
Chip receives the second reflection signal from antenna, and the second transmitting signal and the second reflection signal are handled and converted
It is stored at one second digital signal；
First distance is calculated according to the first digital signal in data processing and input/output module, is believed according to the second number
Number second distance is calculated, then according to first distance and second distance obtain between the first interface and second contact surface away from
From first distance is the first interface at a distance from the antenna of aerial array, and second distance is the day of second contact surface and aerial array
The distance of line.
This method is scanned each interface, the radar signal (i.e. transmitting signal) that transmitting matches with the interface, and
The radar signal (i.e. reflection signal) of corresponding reflection is received, and then obtains each point at the interface at a distance from respective antenna, into
The distance between and obtain adjacent interfaces, simple and convenient, speed is fast, can be realized real-time measurement.
In a kind of schematical embodiment of the method for the section of measurement measurand, each antenna in aerial array
Simultaneously/one by one/coordinated emission first emits signal, to obtain plurality of points and respective antenna in aerial array on the first interface
First distance；
In aerial array each antenna simultaneously/one by one/coordinated emission second emits signal, plural to obtain on second contact surface
The second distance of respective antenna in a point and aerial array,
Data processing and input/output module are according to the of respective antenna in plurality of points on the first interface and aerial array
The second distance of plurality of points and respective antenna in aerial array generates the section of measurand in one distance and second contact surface
Two-dimensional/three-dimensional figure.This method can conveniently, accurately and real-time obtain the two-dimensional/three-dimensional figure of measurand section.
Crystallization in the schematical embodiment of another kind of the method for the section of measurement measurand, in steel industry
Device covering slag, tundish covering flux, ladle steel slag, electric furnace slag, open hearth steel slag, converter slag, paper, paper in paper industry
Heap, substance in the tank in petrochemical industry, the chemical substance in tank in chemical industry, in the tank in wastewater treatment industry
Chemical substance, the chemical substance in tank in food service industry, the storage substance in coal yard and mining site, the solids on conveyer belt
Matter.
Detailed description of the invention
Hereafter by with clearly understandable mode by description of a preferred embodiment and in conjunction with attached drawing come to the present invention it is above-mentioned
Characteristic, technical characteristic, advantage and its implementation are further described, in which:
Fig. 1 is the real-time section survey apparatus structure schematic diagram of array frequency modulated(FM) radar that one embodiment of the present of invention provides；
Fig. 2 is one embodiment of the present of invention offer using array frequency modulated(FM) radar one quilt of real-time section survey device measurement
Survey the schematic diagram of the section of object；
Fig. 3 is the method flow for the section that the use device that one embodiment of the present of invention provides measures the measurand
Figure.
Label declaration:
10 measurands
11 first layers
12 second layers
13 surrounding medium layers
14 first interfaces
15 second contact surfaces
20 aerial arrays
21 antennas
30 chips
31 radiofrequency signals and oscillation signals according synthesizer
311 RF signal synthesizers
312 oscillation signals according synthesizers
32 transmittings/reception isolator
33 simulation pre-low-noise amplifiers
34 frequency mixers
35 intermediate frequency signal processors
36 analog-digital converters
37 digital storages
38 controllers
40 data processings and input/output module
41 data processings and imaging unit
42 USB interfaces
43 PROFINET interfaces
44 wireless PLC interfaces
45 4-20mA communication interfaces
50 first pcb boards
T1 first emits signal
T2 second emits signal
R1 first reflects signal
R2 second reflects signal
The first interface H1 is at a distance from the antenna of aerial array
H2 second contact surface is at a distance from the antenna of aerial array
Specific embodiment
In order to which the technical features, objects and effects of invention are more clearly understood, the Detailed description of the invention present invention is now compareed
Specific embodiment, identical label indicates identical part in the various figures.
It each figure discussed below and is used to describe the various embodiments of the principle of the disclosure in the patent file
It only should not be construed as limiting the scope of the present disclosure by way of illustration and anyway.Those skilled in the art will manage
Solution, can implement the principle of the disclosure in any equipment suitably arranged.Reference example non-limiting embodiments are described
The various innovative teachings of the application.
Herein, " schematic " expression " serving as examplea, instances, or illustrations " should not will be described herein as " showing
Any diagram, the embodiment of meaning property " are construed to technical solution that is a kind of preferred or more having advantages.
To make simplified form, part related to the present invention is only schematically shown in each figure, they are not represented
Its practical structures as product.In addition, there is identical structure or function in some figures so that simplified form is easy to understand
Component schematically shows only one of those, or has only marked one of those.
Fig. 1 is the real-time section survey apparatus structure schematic diagram of array frequency modulated(FM) radar that one embodiment of the present of invention provides.
Fig. 2 is one embodiment of the present of invention offer using array frequency modulated(FM) radar one measurand of real-time section survey device measurement
The schematic diagram of section.As can be seen that the measurand 10 includes the first layer 11 and the second layer 12 stacked from Fig. 1 and Fig. 2.It should
The section of measurand 10 includes at least one first interface 14 and a second contact surface 15.The top of first layer 11 is surrounding medium layer
13 (such as air layers).The interface of first layer 11 and surrounding medium layer 13 is the first interface 14, the second layer 12 and first layer 11 it
Between interface be 15.First layer 11, the second layer 12 and surrounding medium layer 13 are different materials, and dielectric constant is mutually different.
The real-time section survey device of the array frequency modulated(FM) radar includes:
One aerial array 20, for transmitting and receiving radar signal, transmitting and received radar signal be frequency gradually
The electromagnetic impulse sequence of variation；
One chip 30 can generate and adjust the radar signal that each antenna 21 emits in aerial array 20, from antenna
21 receive the radar signal reflected by the interface (the first interface 14 or second contact surface 15) of section, by the radar signal of transmitting and connect
The radar signal of receipts carries out being processed and converted to digital signal storing；With
The interface (first of section can be calculated in one data processing and input/output module 40 according to digital signal
Interface 14 or second contact surface 15) with each layer of the distance between the antenna 21 of aerial array 20 and/or section (first layer 11 and the
Two layers of thickness 12)；And receive user input radar signal parameters for transmission to chip 30 to generate radar signal.
Before measurement or when measurement starts, user (such as survey crew) is arranged by data processing and input/output module 40
The parameter of radar signal.Radar signal is the electromagnetic impulse sequence that frequency gradually changes.The parameter of radar signal include frequency,
Period, waveform and slope of frequency variation etc..For each interface of the section of measurand 10, user can be in real time
The radar signal parameter is adjusted, so that the radar signal matches with the interface, i.e., the radar signal is in the interface and antenna array
Transmission has optimal penetration capacity in medium between column 10.It is of course also possible to do many experiments in advance, obtain and tested pair
The database of the parameter of the radar signal to match as the interface of 10 section, is stored in data processing and input/output module 40
In.Every time when measurement, user is manually or the device automatically according to the interface of measurand 10 selects matched radar to believe
Number parameter.
Chip 30 generates according to the parameter of the radar signal and adjusts the radar that each antenna 21 emits in aerial array 20
Signal.For each interface of measurand 10, an antenna 21 in aerial array 20 emits the radar signal, radar letter
Some point number at the interface is reflected, which receives the radar signal of the point reflection.Each interface corresponding one is matched
Radar signal.The radar signal of the corresponding transmitting of each antenna 21 is identical when measuring to same interface.Different antennas 21 is sent out
The radar signal penetrated is by point reflection different on the same interface.In a schematical embodiment, the same antenna 21 is connect
Receive the reflection signal of the radar signal of its own transmitting.In another schematical embodiment, antenna 21 is able to carry out arrangement
Combination, the radar signal of a certain antenna transmitting, the radar signal of its corresponding reflection is received by another antenna.In other words, often
The radar signal of one antenna 21 transmitting, a corresponding point reflection at the interface to be matched with the radar signal are reflected
Radar signal；The radar signal of the corresponding transmitting of every bit on same interface and the radar signal of a reflection.
Chip 30 is by the radar signal of the radar signal of the corresponding transmitting of every bit or certain point on same interface and reflection
It carries out being processed and converted to digital signal to store, is handled convenient for subsequent application.
Data processing and input/output module 40 according on the same interface stored in chip 30 every bit or certain point
The every bit at the interface or the distance between the antenna 21 of certain point and aerial array 20 is calculated in corresponding digital signal.
For example, a bit for the first interface 14, the distance between the antenna 21 of the available point and aerial array 20, referred to as first
Distance.For multiple points on the first interface 14, the distance between the antenna 21 of available every bit and aerial array 20,
That is first distance.According to the first distance of each point on the first interface 14, the two dimension or three at the first interface 14 can be drawn out
Dimension figure.It is similar, for second contact surface 15 a bit, the distance between the antenna 21 of the available point and aerial array 20,
Referred to as second distance.For multiple points on second contact surface 15, the antenna 21 of available every bit and aerial array 20 it
Between distance, i.e. second distance.According to the second distance of each point on second contact surface 15, second contact surface 15 can be drawn out
Two dimension or three-dimensional figure.According to the distance between each interface and aerial array 20, each layer of measurand section can be obtained
Thickness.
Have it is above-mentioned it is found that the real-time section survey device of the array frequency modulated(FM) radar can non-contactly, Measure section in real time,
At least one of integrated level is high, small in size, and have the advantages that:
1) emit and receive radar signal using aerial array, be non-contact measurement, safe and saving is artificial；
2) have not using the interface of multiphase battle array radar (multiphase array radar) between different medium layer
Same penetrates/reflection characteristic, can be realized while measuring multiple parameters；
3) radar signal of multiple and different reflective conditions is handled in real time using a chip, and generate digital signal confession
Subsequent concrete application uses；
4) it can be realized multimetering, and then realize the two dimension of the section of measurand or the drafting of 3-D image；
5) for different interface level measurements, same single measuring device is used, integrated level is high, high anti-interfering performance, at
This is low, small in size, is easily installed.
In a schematical embodiment, chip 30 includes:
One radiofrequency signal and oscillation signals according synthesizer 31 are capable of the radar signal and local oscillation letter of complex RF
Number；
One transmitting/reception isolator 32 obtains the radar of synthesis from radiofrequency signal and oscillation signals according synthesizer 31
Signal is simultaneously sent to aerial array 20, the radar signal of reflection is received from aerial array 20, and the thunder sent and received is isolated
Up to signal；
One simulation pre-low-noise amplifier 33, obtains received radar signal from transmitting/reception isolator 32 and puts
Greatly；
One frequency mixer 34 obtains oscillation signals according from radiofrequency signal and oscillation signals according synthesizer 31, from simulation
Pre-low-noise amplifier 33 obtains amplified radar signal, and oscillation signals according and amplified radar signal are carried out
Mixing obtains an intermediate-freuqncy signal；
One intermediate frequency signal processor 35, is filtered intermediate-freuqncy signal and amplifies；
One analog-digital converter 36, is converted to digital signal for the analog signal that intermediate frequency signal processor 35 exports；
One digital storage 37, can store digital signal；With
One controller 38, can control the collaborative work of each device in chip 30.
Digital storage 37 can be communicated with data processing and input/output module 40, receive the radar of user's input
The parameter of signal.
Radiofrequency signal and oscillation signals according synthesizer 31 obtain the ginseng for the radar signal to be emitted from digital storage 37
Number, the radar signal of complex RF.In addition radiofrequency signal and oscillation signals according synthesizer 31 also generate oscillation signals according.
In one schematical embodiment, radiofrequency signal and oscillation signals according synthesizer 31 include:
One RF signal synthesizer 311, for the radar signal of complex RF, the radar signal of radio frequency is triangular wave or saw
Tooth wave；With
One oscillation signals according synthesizer 312, for generating oscillation signals according, oscillation signals according is the sine of radio frequency
Wave signal.
Transmitting/reception isolator 32 sends the radar signal of synthesis to the antenna 21 of aerial array 20 and is transmitted from out
It goes, and also receives the radar signal by a point reflection on interface.Transmitting/reception isolator 32 is also to sending and receiving
Radar signal is isolated, and prevents the two from interfering with each other.
Simulation pre-low-noise amplifier 33 amplifies received radar signal, is able to suppress from environment, day
The noise of line 21, amplifier 33 etc. itself, signal-to-noise ratio are big.
For a point at an interface of the section of measurand 10, the radar signal that antenna 21 emits is by the point reflection.
Transmitting and received radar signal are the electromagnetic impulse sequence that frequency gradually changes.Such as the radar signal of transmitting is 100MHZ
It is in line and increases to the electromagnetic impulse sequence of 200MHZ, the slope of the straight line is, for example, 1.Received radar signal is also
100MHZ, which is in line, increases to the electromagnetic impulse sequence of 200MHZ, and the slope page of the straight line is 1.When the thunder for receiving 100MHZ
When up to signal, the frequency of the radar signal of transmitting is 150MHZ.Frequency mixer 34 so in chip 30 by oscillation signals according and
Received radar signal is multiplied, and after differenceization product, obtains intermediate-freuqncy signal, which includes difference frequency information.
The digital signal that the intermediate-freuqncy signal obtains after intermediate frequency signal processor 35 and analog-digital converter 36 is stored in number
For being used in subsequent applications in word memory 37.
The chip structure is simple, and integrated level is high, can be mixed by emitting the signal for carrying out frequency domain with received radar signal
Frequency is handled, obtained digital signal convenient for calculate in subsequent applications interface or point and aerial array in interface antenna away from
From, and then the thickness of each layer of the section of measurand is calculated, draw two dimension or three-dimensional figure of the section of measurand etc..
In a schematical embodiment, data processing and input/output module 40 include a data processing and imaging
Unit 41 can obtain data from digital storage 37 and each interface of section and the day of aerial array 20 is calculated
The distance between line 21, and form the two-dimensional/three-dimensional image of section.For example, data processing and imaging unit 41 are from stored digital
The digital signal including difference frequency information is obtained in device 37, each point calculated in the first interface 14 is corresponding with aerial array 20
Antenna distance (i.e. first distance) and each point in second contact surface 15 at a distance from antenna corresponding in aerial array
(i.e. second distance), this makes it possible to the two-dimensional/three-dimensional images for drawing out section.In addition it is possible to according in the first interface 14
Each point and (i.e. first distance) at a distance from antenna corresponding in aerial array and each point in second contact surface 15 and day
The distance (i.e. second distance) of corresponding antenna calculates the first layer 1 between the first interface 14 and second contact surface 15 in linear array
Thickness at each point.Data processing and imaging unit 41 by the two-dimensional/three-dimensional image of the section export to imaging device into
The display (such as display, augmented reality, virtual reality etc.) of row image, the user that is more convenient for check the section letter of measurand
Breath.
Be integrated in the chip 30 of the test device radio frequency radar signal/reception isolator 32, simulation before set low
Noise amplifier 33 and digital storage 37 etc. allow to carry out configuration radar signal, chip 30 and data processing in real time
Rapid communication between imaging unit 41 makes measuring speed, and the time is very short quickly.Data processing and the formation of imaging unit 41
The section two-dimensional/three-dimensional image refreshing frequency it is high, reach tens frame per second, meet the needs of real-time measurement.
In a schematical embodiment, data processing and input/output module 40 further include an at least interface,
For one or more of USB interface 42, PROFINET interface 43, wireless PLC interface 44 and 4-20mA communication interface 45.It is more
The different interface of kind is conducive to the measuring device and external equipment (such as remote control center, user computer, industrial cloud) carries out
Communication.
In a schematical embodiment, data processing and imaging unit 41 can also be received and stored and tested pair
As 10 parameter of radar signal that matches of each interface；Radiofrequency signal and oscillation signals according synthesizer 31 are from stored digital
Device 37 obtains the parameter of the radar signal from data processing and imaging unit 41 with the radar signal of complex RF.User can
Easily (such as passing through interface) inputs the parameter of radar signal to data processing and imaging unit 41, and each interface corresponds to radar
One group of parameter of signal, it is easy to use convenient for adjusting radar signal according to measurand when measurement.
In a schematical embodiment, which further includes one first pcb board 50, aerial array 20 and core
Piece 30 is integrated on the first pcb board 50.In this way, further improving integrated level.In addition, the data processing and input/output module
40 further include one second pcb board (not drawing), and data processing and imaging unit 41 and interface are mounted on the second pcb board.
Fig. 3 is the method flow for the section that the use device that one embodiment of the present of invention provides measures the measurand
Figure.The method of the section of the measurand 10 is measured using the device, comprising:
S100, data processing and input/output module 40 receive the parameters for transmission of the radar signal of user's input to chip
20 to generate radar signal, and radar signal includes one first transmitting signal T1, matches with the first interface 14 and one second transmitting is believed
Number T2, matches with second contact surface 15.
In the step, the radar signal that aerial array 10 emits is the parameter inputted according to user, is generated by chip 20.
For each interface, the medium between the interface and aerial array 10 is specific, different interface and aerial array 10
Between medium be different.Medium between first interface 14 and aerial array 10 is surrounding medium layer 13, second contact surface 15
Medium between aerial array 10 is the surrounding medium layer 13 and first layer 11 of stacking.First transmitting signal T1 and the first interface
14 matchings, i.e., the first transmitting signal T1 transmission in the medium (surrounding medium layer 13) between the first interface 14 and aerial array 10
With optimal penetration capacity.Second transmitting signal T2 is matched with second contact surface 15, i.e., the second transmitting signal T2 is in second contact surface
Transmission has optimal penetration capacity in medium (surrounding medium layer 13 and first layer 11) between 15 and aerial array 10.
In a schematical embodiment, user (such as survey crew) is in the section for being directed to each measurand
It constitutes, the parameter of radar signal is inputted when measuring and starting.In another schematical embodiment, a large amount of realities are done in advance
It tests, obtains the database of the parameter of the radar signal to match with the interface of the section of measurand 10, be stored in data processing
In input/output module 40.When measurement, user manually or the device automatically according to selection respectively with the first interface 14 and second
The parameter of the first transmitting signal T1 and the second transmitting signal T2 that interface 15 matches.
S200 to first transmitting signal T1 of the transmitting of measurand 10 and receives one first using the antenna 21 of aerial array 20
Signal R1 is reflected, the first reflection signal R1 is the signal that the first transmitting signal T1 is reflected by the first interface 14.
The same antenna 21 emits the first transmitting signal T1, but receive from the point reflection at corresponding first interface 14 first
Reflect signal R1.
S300, chip 30 receive the first reflection signal R1 from antenna 21, by the first transmitting signal T1 and the first reflection signal
R1 carries out being processed and converted to one first digital signal storing.
First digital signal includes the difference frequency information of the first reflection signal R1 and the first transmitting signal T1, after can be used for
It is continuous to calculate the distance between the point of the first transmitting of transmitting signal T1 and the antenna in first interface 14.Corresponding first interface 14
First digital signal of each point and the distance between antenna 21 can be obtained by identical method.
S400 to second transmitting signal T2 of the transmitting of measurand 10 and receives one second using the antenna 21 of aerial array 20
Signal R2 is reflected, the second reflection signal R2 is the signal that the second transmitting signal T2 is reflected by second contact surface 15；
The same antenna 21 emits the second transmitting signal T2, but receive from the point reflection of corresponding second contact surface 15 second
Reflect signal R2.
S500, chip 30 receive the second reflection signal R2 from antenna 21, by the second transmitting signal T2 and the second reflection signal
R2 carries out being processed and converted to one second digital signal storing.
Second digital signal includes the difference frequency information of the second reflection signal R2 and the second transmitting signal T2, after can be used for
It is continuous to calculate the distance between the point of the second transmitting of transmitting signal T2 and the antenna in the second contact surface 15.Corresponding second contact surface 15
Second digital signal of each point and the distance between antenna 21 can be obtained by identical method.
Similar, corresponding digital signal is obtained for can repeat the step S200 and S300 at each interface,
It includes the difference frequency information of the reflection signal of a point reflection at the interface and corresponding transmitting signal.
First distance H1 is calculated according to the first digital signal in S600, data processing and input/output module 40, according to
Second distance H2 is calculated in second digital signal, then obtains 14 He of the first interface according to first distance H1 and second distance H2
The distance between second contact surface 15, first distance H1 be the first interface 14 at a distance from the antenna 21 of aerial array 20, second away from
It is second contact surface 15 at a distance from the antenna 14 of aerial array 20 from H2.
This method is scanned each interface, the radar signal (i.e. transmitting signal) that transmitting matches with the interface, and
The radar signal (i.e. reflection signal) of corresponding reflection is received, and then obtains each point at the interface at a distance from respective antenna, into
The distance between and obtain adjacent interfaces, simple and convenient, speed is fast, can be realized real-time measurement.
Each antenna 21 is simultaneously in a schematical embodiment of this method, in aerial array 20/one by one/collaboration
Transmitting the first transmitting signal T1, with obtain on the first interface 14 first of respective antenna 21 in plurality of points and aerial array 20 away from
From H1；
In aerial array 21 each antenna 21 simultaneously/one by one/coordinated emission second emit signal T2, to obtain second contact surface
The second distance H2 of plurality of points and respective antenna 21 in aerial array 20 on 15,
Data processing and input/output module 40 correspond to day according in plurality of points on the first interface 14 and aerial array 20
The second distance H2 of plurality of points and respective antenna 21 in aerial array 20 is raw on the first distance H1 and second contact surface 15 of line 21
At the two-dimensional/three-dimensional figure of the section of measurand 10.
This method can conveniently, accurately and real-time obtain the two-dimensional/three-dimensional figure of measurand section.
In a schematical embodiment, measurand is one in following: the crystallizer in steel industry is protected
Protect slag, tundish covering flux, ladle steel slag, electric furnace slag, open hearth steel slag, converter slag, paper, pile in paper industry, stone
Substance in tank in oily chemical industry, the chemical substance in tank in chemical industry, the chemistry in tank in wastewater treatment industry
Substance, the chemical substance in tank in food service industry, the storage substance in coal yard and mining site, the solid matter etc. on conveyer belt.
The working frequency of the measuring device is very wide, such as 10MHZ-20GHZ.
Although not each embodiment is only wrapped it should be appreciated that this specification is described according to each embodiment
Containing an independent technical solution, only for clarity, those skilled in the art should incite somebody to action this narrating mode of specification
As a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art to specification
The other embodiments being understood that.
The series of detailed descriptions listed above are illustrated only for possible embodiments of the invention,
The protection scope that they are not intended to limit the invention, it is all without departing from equivalent embodiment made by technical spirit of the present invention or change
It should all be included in the protection scope of the present invention.
Claims (10)
1. the real-time section survey device of array frequency modulated(FM) radar characterized by comprising
One aerial array (20), for transmitting and receiving radar signal, the transmitting and received radar signal be frequency by
The electromagnetic impulse sequence of gradual change；
One chip (30) can generate and adjust the radar letter of each antenna (21) transmitting in the aerial array (20)
Number, the radar signal reflected by the interface of the section is received from the antenna (21), by the radar signal of transmitting and received
Radar signal carries out being processed and converted to digital signal storing；With
One data processing and input/output module (40), can be calculated the interface of the section according to the digital signal
The thickness of each layer of the distance between antenna (21) of the aerial array (20) and/or the section；And receive user
The parameters for transmission of the radar signal of input is to the chip (30) to generate the radar signal.
2. the real-time section survey device of array frequency modulated(FM) radar according to claim 1, which is characterized in that the chip (30)
Include:
One radiofrequency signal and oscillation signals according synthesizer (31) are capable of the radar signal and local oscillation letter of complex RF
Number；
One transmitting/reception isolator (32) obtains the conjunction from the radiofrequency signal and oscillation signals according synthesizer (31)
At radar signal and be sent to the aerial array (20), from the aerial array (20) receive reflection radar signal, and
And the radar signal sent and received described in isolation；
One simulation pre-low-noise amplifier (33) obtains the received radar from the transmitting/reception isolator (32)
Signal simultaneously amplifies；
One frequency mixer (34) obtains the local oscillation letter from the radiofrequency signal and oscillation signals according synthesizer (31)
Number, obtain amplified radar signal from the simulation pre-low-noise amplifier (33), and by the oscillation signals according and
The amplified radar signal is mixed to obtain an intermediate-freuqncy signal；
One intermediate frequency signal processor (35) is filtered and amplifies to the intermediate-freuqncy signal；
The analog signal that the intermediate frequency signal processor (35) export is converted to the number and believed by one analog-digital converter (36)
Number；
One digital storage (37), can store the digital signal；With
One controller (38) can control the collaborative work of each device in the chip (30).
3. the real-time section survey device of array frequency modulated(FM) radar according to claim 2, which is characterized in that the data processing
Include a data processing and imaging unit (41) with input/output module (40), can be obtained from the digital storage (37)
It obtains data and the distance between each interface of the section and the antenna (21) of the aerial array (20), and shape is calculated
At the two-dimensional/three-dimensional image of the section.
4. the real-time section survey device of array frequency modulated(FM) radar according to claim 3, which is characterized in that the data processing
Further include an at least interface with input/output module (40), is connect for USB interface (42), PROFINET interface (43), wireless PLC
Mouth one or more of (44) and 4-20mA communication interface (45).
5. the real-time section survey device of array frequency modulated(FM) radar according to claim 3, which is characterized in that the data processing
The radar signal to match with each interface of the measurand (10) can also be received and stored with imaging unit (41)
Parameter；The radiofrequency signal and oscillation signals according synthesizer (31) are obtained from the digital storage (37) comes from the data
Handle the radar signal that the radio frequency is synthesized with the parameter of the radar signal of imaging unit (41).
6. the real-time section survey device of array frequency modulated(FM) radar according to claim 1, which is characterized in that further include one first
Pcb board (50), the aerial array (20) and the chip (30) are integrated on first pcb board (50).
7. the real-time section survey device of array frequency modulated(FM) radar according to claim 1, which is characterized in that the radiofrequency signal
Include: with oscillation signals according synthesizer (31)
One RF signal synthesizer (311), for synthesizing the radar signal of the radio frequency, the radar signal of the radio frequency is triangle
Wave or sawtooth wave；With
One oscillation signals according synthesizer (312), for generating the oscillation signals according, the oscillation signals according is radio frequency
Sine wave signal.
8. the method for measuring the section of a measurand with the described in any item devices of claim 1-7, the measurand
(10) section includes at least one first interface (14) and a second contact surface (15), which is characterized in that the described method includes:
The data processing and input/output module (40) receive the parameters for transmission of the radar signal of user's input to institute
Chip (30) is stated to generate the radar signal, the radar signal includes one first transmitting signal (T1), with first boundary
Face (14) matching and one second transmitting signal (T2), match with the second contact surface (15)；
Emit first transmitting signal (T1) using antenna (21) the Xiang Suoshu measurand (10) of the aerial array (20)
And one first reflection signal (R1) is received, first reflection signal (R1) is first transmitting signal (T1) by described first
The signal of interface (14) reflection；
The chip (30) receives first reflection signal (R1) from the antenna (21), by first transmitting signal (T1)
It carries out being processed and converted to one first digital signal with first reflection signal (R1) storing；
Emit second transmitting signal (T2) using antenna (21) the Xiang Suoshu measurand (10) of the aerial array (20)
And one second reflection signal (R2) is received, second reflection signal (R2) is second transmitting signal (T2) by described second
The signal of interface (15) reflection；
The chip (30) receives second reflection signal (R2) from the antenna (21), by second transmitting signal (T2)
It carries out being processed and converted to one second digital signal with second reflection signal (R2) storing；
First distance (H1), root is calculated according to first digital signal in the data processing and input/output module (40)
Second distance (H2) is calculated according to second digital signal, then according to the first distance (H1) and the second distance
(H2) the distance between first interface (14) and the second contact surface (15) are obtained, the first distance (H1) is described the
At a distance from the antenna (21) of the aerial array (20), the second distance (H2) is the second contact surface at one interface (14)
(15) at a distance from the antenna (21) of the aerial array (20).
9. according to the method described in claim 8, it is characterized in that, in the aerial array (20) each antenna simultaneously/one by one/
First transmitting signal (T1) described in coordinated emission, to obtain plurality of points and the aerial array on first interface (14)
(20) first distance (H1) of respective antenna in；
In the aerial array (20) each antenna simultaneously/one by one/coordinated emission described in second transmitting signal (T2), to obtain
The second distance (H2) of plurality of points and respective antenna in the aerial array (20) on second contact surface (15) is stated,
The data processing and input/output module (40) are according to plurality of points on first interface (14) and the antenna array
Arrange in (20) plurality of points and the aerial array (20) in the first distance (H1) of respective antenna and the second contact surface (15)
The second distance (H2) of middle respective antenna generates the two-dimensional/three-dimensional figure of the section of the measurand (10).
10. according to the method described in claim 8, it is characterized in that, the measurand (10) is one in following: steel
Crystallizer protecting residue, tundish covering flux, ladle steel slag, electric furnace slag, open hearth steel slag, converter slag in industry, papermaking row
Paper, pile in industry, substance in the tank in petrochemical industry, the chemical substance in tank in chemical industry, wastewater treatment row
The chemical substance in tank in industry, the chemical substance in tank in food service industry, the storage substance in coal yard and mining site, conveyer belt
On solid matter.
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