CN104482988B - A kind of device and method for measuring water level and flow velocity - Google Patents
A kind of device and method for measuring water level and flow velocity Download PDFInfo
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- CN104482988B CN104482988B CN201410851958.1A CN201410851958A CN104482988B CN 104482988 B CN104482988 B CN 104482988B CN 201410851958 A CN201410851958 A CN 201410851958A CN 104482988 B CN104482988 B CN 104482988B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
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Abstract
Disclose a kind of equipment for measuring water level and flow velocity in the present invention, including master oscillator frequenc source, frequency synthesizer, main shake Amplifier Chain, timer, transmit/receive switch, radar antenna, receiver, signal processor, data processor and radar terminal.Pass through the high frequency stability of master oscillator frequenc source generation, the reference frequency signal of high frequency purity, after handling the reference frequency signal, radiated by radar antenna to target water source, receive the target echo signal of target water source reflection, by analyzing the parameter in the target echo signal, the water level and flow velocity at accurate target water source are obtained according to default computational methods measurement.
Description
Technical field
The present invention relates to Water Resources Domain, more particularly to a kind of device and method for measuring water level and flow velocity.
Background technology
On earth in diversified geographical environment, production, the life of the environment such as river, lake, ocean and people have
Close contact.Hydrologic monitoring for environment such as river, lake, oceans, be advantageous to study its changing rule, to reducing certainly
Right disaster, assuring the safety for life and property of the people has great significance.
In the hydrologic monitoring to environment such as river, lake, oceans, water level and flow velocity are two important Contents for Monitoring,
Develop more accurate, convenient water level, flow-speed measurement method has great significance.Therefore a kind of measurement water level and flow velocity are needed badly
Device and method, water level and flow velocity are accurately measured.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of device and method for measuring water level and flow velocity, can be to water
Position and flow velocity are accurately measured.
In order to solve the above problems, the invention discloses a kind of equipment for measuring water level and flow velocity, including：
Master oscillator frequenc source, frequency synthesizer, lead shake Amplifier Chain, timer, transmit/receive switch, radar antenna, reception
Machine, signal processor, data processor and radar terminal；
Wherein：
The master oscillator frequenc source is used to produce reference frequency signal；And the reference frequency signal is sent to the frequency
Synthesizer and timer；
The frequency synthesizer is used for according to default first frequency rule change, enters line frequency to the reference frequency signal
Rate changes, and produces transmitting pumping signal, receiver local oscillation signal and coherent reference signal respectively；
The timer is used for according to default second frequency rule change, and line frequency change is entered to the reference frequency signal
Change, produce synchronization pulse and clock signal；And the synchronization pulse and clock signal are respectively sent to the letter
Number processor, data processor and radar terminal；
The master shakes Amplifier Chain, for the power of the transmitting pumping signal to be amplified into predetermined power step by step, and
Transmitting pumping signal by amplification is transferred to by feeder line and described transmits/receives switch；
It is described to transmit/receive switch, for when receiving the transmitting pumping signal of the process amplification, closing the reception
Machine, and the transmitting pumping signal by amplification is transmitted to the radar antenna；And when receiving target echo signal,
The receiver is opened, the target echo signal is sent to the receiver；
The radar antenna, which is used to orient the transmitting pumping signal by amplification to free space, to be radiated, and
The target echo signal that target is reflected back is received, the target echo signal is sent to described and transmits/receives switch；
The receiver is used to be amplified the amplitude of the target echo signal, and the target echo by amplification is believed
Number send to the signal processor；
The signal processor is used to carrying out the first processing to the target echo signal by amplification operating, and will be through
The target echo signal for crossing processing is sent to the data processor；
The data processor is used to according to default algorithm, enroll the target echo signal that the signal processor is sent
In target component；The target component includes water level parameters and flow parameters；
The radar terminal is used in the presence of synchronization pulse, to the target by signal processor processing
Echo-signal and the echo-signal handled by the data processor are shown.
Above-mentioned equipment, it is preferred that the frequency synthesizer includes：
Direct Digital Synthesizer DDS and phase-locked loop pll.
Above-mentioned equipment, it is preferred that when carrying out level measuring, the transmitting pumping signal connects for triangle-wave frequency modulation
Continuous ripple；When carrying out flow velocity measurement, the transmitting pumping signal is single-frequency continuous wave signal；
Single-chip microcomputer is additionally provided with the frequency synthesizer；
The single-chip microcomputer is used to control the DDS, realizes that the triangle-wave frequency modulation continuous wave and the single-frequency are continuous
The switching of ripple signal.
A kind of method for measuring water level and flow velocity, equipment of the methods described based on measurement water level and flow velocity, the equipment bag
Include：
Master oscillator frequenc source, frequency synthesizer, lead shake Amplifier Chain, timer, transmit/receive switch, radar antenna, reception
Machine, signal processor, data processor and radar terminal；
Methods described includes：
The master oscillator frequenc source produces reference frequency signal；And the reference frequency signal is sent to the frequency synthesis
Device and timer；
The frequency synthesizer enters line frequency change to the reference frequency signal according to default first frequency rule change
Change, produce transmitting pumping signal, receiver local oscillation signal and coherent reference signal respectively；
The timer enters line frequency change to the reference frequency signal according to default second frequency rule change,
Produce synchronization pulse and clock signal；And the synchronization pulse and clock signal are respectively sent at the signal
Reason machine, data processor and radar terminal；
The master is shaken Amplifier Chain, and the power of the transmitting pumping signal is amplified into predetermined power step by step, and will be through
Cross the transmitting pumping signal of amplification and be transferred to by feeder line and described transmit/receive switch；
It is described to transmit/receive switch, when receiving the transmitting pumping signal of the process amplification, the receiver is closed, and
The transmitting pumping signal by amplification is transmitted to the radar antenna；And when receiving target echo signal, open
The receiver, the target echo signal is sent to the receiver；
The transmitting pumping signal by amplification is oriented to free space and radiated by the radar antenna, and is received
The target echo signal that target is reflected back, the target echo signal is sent to described and transmits/receives switch；
The receiver is amplified to the amplitude of the target echo signal, and the target echo signal by amplification is sent out
Deliver to the signal processor；
The signal processor carries out the first processing to the target echo signal by amplification and operated, and will pass through place
The target echo signal of reason is sent to the data processor；
The data processor is enrolled in the target echo signal that the signal processor is sent according to default algorithm
Target component；The target component includes water level parameters and flow parameters；
The radar terminal is in the presence of synchronization pulse, to the target echo by signal processor processing
Signal and the echo-signal handled by the data processor are shown.
Above-mentioned method, it is preferred that when carrying out level measuring, the transmitting pumping signal connects for triangle-wave frequency modulation
Continuous ripple；When carrying out flow velocity measurement, the transmitting pumping signal is single-frequency continuous wave signal.
Above-mentioned method, it is preferred that the measuring method is using single-chip microcomputer DDS pairs of Direct Digital Synthesizer of control
The frequency synthesizer generates the triangle-wave frequency modulation continuous wave or single-frequency continuous wave signal and switched over.
Compared with prior art, the present invention includes advantages below：
A kind of equipment for measuring water level and flow velocity, including master oscillator frequenc source, frequency synthesizer, master are disclosed in the present invention
Shake Amplifier Chain, timer, to transmit/receive switch, radar antenna, receiver, signal processor, data processor and radar whole
End.By the high frequency stability of master oscillator frequenc source generation, the reference frequency signal of high frequency purity, the reference frequency signal is entered
After row processing, radiated by radar antenna to target water source, receive the target echo signal of target water source reflection, pass through
Analyze the parameter in the target echo signal, according to default computational methods measurement obtain accurate target water source water level and
Flow velocity.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, without having to pay creative labor, it can also be obtained according to these accompanying drawings
His accompanying drawing.
Fig. 1 is the structural representation of the equipment of a kind of the measurement water level and flow velocity of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The embodiments of the invention provide a kind of equipment for measuring water level and flow velocity, its structural representation is as shown in figure 1, bag
Include：
Master oscillator frequenc source 101, frequency synthesizer 102, main shake Amplifier Chain 104, timer 103, transmit/receive switch 105,
Radar antenna 106, receiver 107, signal processor 108, data processor 109 and radar terminal 110；
Wherein：
The master oscillator frequenc source 101 is used for the reference frequency signal for producing high frequency stability, high spectral purity；And by the base
Quasi- frequency signal is sent to the frequency synthesizer 102 and timer 103；
The frequency synthesizer 102 is used for according to default first frequency rule change, and the reference frequency signal is entered
Line frequency changes, and produces transmitting pumping signal, receiver local oscillation signal and coherent reference signal respectively；In the embodiment of the present invention,
The reference frequency signal that frequency synthesizer 102 provides according to master oscillator frequenc source 101, using various frequency change means, produce hair
Penetrate pumping signal, receiver local oscillation signal and coherent reference signal；The frequency synthesizer 102 sends out the transmitting pumping signal
The master is given to shake Amplifier Chain 104；The receiver local oscillation signal is sent to the receiver 107；By the coherent
Reference signal is sent to the signal processor 108.
The timer 103 is used for according to default second frequency rule change, enters line frequency to the reference frequency signal
Rate changes, and produces synchronization pulse and clock signal；And the synchronization pulse and clock signal are respectively sent to institute
State signal processor 108, data processor 109 and radar terminal 110；In the embodiment of the present invention, timer 103 is according to the main frequency that shakes
The reference frequency signal that rate source 101 provides, using various frequency change means, produce various lock-out pulses and various clocks letter
Number.The signal processor 108, data processor 109 and radar terminal 110 are believed in the various lock-out pulses and various clocks
In the presence of number, in synchronous regime.
The master shakes Amplifier Chain 104, for the power of the transmitting pumping signal to be amplified into predetermined power step by step,
And the transmitting pumping signal by amplification is transferred to by feeder line and described transmits/receives switch；In the embodiment of the present invention, the master shakes
Transmitting pumping signal from frequency synthesizer 102 is amplified to enough power by Amplifier Chain 104 step by step, is transmitted through feeder line
To transmitting/receiving switch 105.
It is described to transmit/receive switch 105, for when receiving the transmitting pumping signal of the process amplification, being connect described in closing
Receipts machine 107, and the transmitting pumping signal by amplification is transmitted to the radar antenna 106；And returned receiving target
During ripple signal, the receiver 107 is opened, the target echo signal is sent to the receiver 107；The embodiment of the present invention
In, the switch 105 that transmits/receives is isolated reception with transmission path, when the powerful transmitting that emitter is sent encourages letter
Number reach when, close receiver 107；To prevent high-power leakage signal from burning out the front-end devices of receiver 107.The emitter
It is made up of master oscillator frequenc source 101, frequency synthesizer 102 and main Amplifier Chain 104 of shaking.
The radar antenna 106, which is used to orient the transmitting pumping signal by amplification to free space, carries out spoke
Penetrate, and receive the target echo signal that target is reflected back, the target echo signal is sent to described and transmits/receives switch 105；
The receiver 107 is used to be amplified the amplitude of the target echo signal, and the target by amplification is returned
Ripple signal is sent to the signal processor 108；
The signal processor 108 is used to operate the processing of target echo signal progress first by amplification, and
Treated target echo signal is sent to the data processor 109；
The data processor 109 is used to according to default algorithm, enroll the target time that the signal processor 108 is sent
Target component in ripple signal；The target component includes water level parameters and flow parameters；
The radar terminal 110 is used in the presence of synchronization pulse, to being handled by the signal processor 108
Target echo signal and by the data processor 109 processing echo-signal shown.
In the embodiment of the present invention, described receiver 107 will transmit/receive the faint target echo signal of the transmission of switch 105
Processing is amplified, then, the target echo signal for being amplified to certain amplitude is delivered into signal processor 108；Described signal
Processor 108, the target echo signal that receiver 107 is sent carry out after-treatment；Described data processor 109 is according to letter
The target echo signal that number processor 108 is sent, carry out target component admission；Measurement including water level and flow velocity.
In the embodiment of the present invention, the frequency synthesizer 102 includes：
Direct Digital Synthesizer DDS and phase-locked loop pll.
In the embodiment of the present invention, when carrying out level measuring, the transmitting pumping signal is that triangle-wave frequency modulation is continuous
Ripple；When carrying out flow velocity measurement, the transmitting pumping signal is single-frequency continuous wave signal；Frequency synthesis in the embodiment of the present invention
Device 102 has the ability for producing both waveforms.
Single-chip microcomputer is additionally provided with the frequency synthesizer 102；
The single-chip microcomputer is used to control the DDS, realizes that the triangle-wave frequency modulation continuous wave and the single-frequency are continuous
The switching of ripple signal.
In the measuring apparatus of water level and flow velocity provided in an embodiment of the present invention, described frequency synthesizer 102 is by directly counting
Word synthetic technology (DDS) and PHASE-LOCKED LOOP PLL TECHNIQUE (PLL) composition, when carrying out level measuring, the driving of frequency sweep driving voltage is voltage-controlled to shake
The electromagnetic wave that device (VCO) produces frequency change is swung, it is exported in time by a certain known function of time change, objective emission
The transmission signal that the signal and emitter direct-coupling returned come obtains intermediate-freuqncy signal after being mixed in frequency mixer.Intermediate-freuqncy signal
Frequency in include the range information of target.Target range is just can obtain after the processing such as it is by amplifying, filter, frequency measurement.This
The contactless measurement of the involved water level flow velocity based on Principles of Radar of invention, measurement result precision is higher, be not easy by
To the influence of surrounding enviroment, it is adapted to measure under complex environment.
In the embodiment of the present invention, transmitting and reception share a radar antenna 106, complete to receive and dispatch by transmitting/receiving switch 105
Isolation.
Water level involved in the present invention and the measuring apparatus of flow velocity, water level and flow velocity are carried out based on Principles of Radar non-contact
Formula measures, and its principle is as follows：
(1) radar range finding principle：
Electromagnetic wave is approximately equal to the light velocity, i.e. c=3 × 10 in the spread speed of free space8M/s, if radar and target away from
From being Δ t for R, two-way time of the electromagnetic wave between radar and target, then have
I.e.
From formula, as long as measuring two-way time Δ t of the electromagnetic wave between radar and target, you can calculate both
The distance between.
(2) radar velocity measurement principle：
What measurement of the radar for target velocity utilized is Doppler effect.Doppler effect to the effect that works as transmitting
When having relative motion between source and reception source, the echo-signal that radar receives will become compared with transmission signal compared to frequency
Change.Next the situation of radar emission continuous wave signal is made a concrete analysis of, the Doppler frequency derived in the case of other
Relational expression and continuous wave signal situation between transmitted wave operation wavelength, radial velocity is consistent.
If the distance between radar and target are R (t), the radial velocity of moving target and radar is vrIf transmission signal
For
Wherein A is amplitude, ω0For angular frequency,For initial phase.
Because the target echo time delay that radar receives is Δ t=2R/c, if the attenuation coefficient of echo is k,
Then the expression formula of echo-signal is：
Relative motion between target and radar makes distance therebetween be changed with the time, it is assumed that target is at the uniform velocity transported
Dynamic, then the distance between t target and radar are
R (t)=R0-vrt
Wherein, R0For t=0 moment target and the distance of radar.
Generally, vrFar smaller than velocity of electromagnetic wave c, so Δ t expression formula can be written as：
The echo-signal and the high-frequency phase difference of transmission signal received be：
As radial velocity vrFor definite value when, difference on the frequency is that Doppler frequency is：
As can be seen that because therefore the wavelength X of transmission signal is, it is known that need to only measure Doppler frequency fd, you can draw mesh
Mark the movement velocity relative to radar.
The measuring apparatus of water level and flow velocity provided in an embodiment of the present invention, according to above-mentioned principle, produce high frequency stability, high frequency
The full machine reference frequency signal of spectral purity；After handling the reference frequency, radiated to target water source, the present invention
In embodiment, when carrying out level measuring, the transmitting pumping signal is triangle-wave frequency modulation continuous wave；When progress flow velocity survey
During amount, the transmitting pumping signal is single-frequency continuous wave signal；Then the echo-signal of target water source reflection is received, passes through the above
Water level and flow rate information is calculated in principle, and the data of acquisition are more accurate.
Corresponding with the measurement water level described in Fig. 1 and the equipment of flow velocity, the embodiment of the present invention additionally provides a kind of measurement
The method of water level and flow velocity, equipment of the methods described based on measurement water level and flow velocity, the equipment include：
Master oscillator frequenc source, frequency synthesizer, lead shake Amplifier Chain, timer, transmit/receive switch, radar antenna, reception
Machine, signal processor, data processor and radar terminal；
Methods described includes：
Step S101：The master oscillator frequenc source produces reference frequency signal；And the reference frequency signal is sent to institute
State frequency synthesizer and timer；
Step S102：The frequency synthesizer is according to default first frequency rule change, to the reference frequency signal
Enter line frequency change, produce transmitting pumping signal, receiver local oscillation signal and coherent reference signal respectively；
Step S103：The timer is carried out according to default second frequency rule change to the reference frequency signal
Frequency changes, and produces synchronization pulse and clock signal；And the synchronization pulse and clock signal are respectively sent to
The signal processor, data processor and radar terminal；
Step S104：The master is shaken Amplifier Chain, and the power of the transmitting pumping signal is amplified into default work(step by step
Rate, and the transmitting pumping signal by amplification is transferred to by feeder line and described transmits/receives switch；
Step S105：It is described to transmit/receive switch, when receiving the transmitting pumping signal of the process amplification, described in closing
Receiver, and the transmitting pumping signal by amplification is transmitted to the radar antenna；And receiving target echo letter
Number when, open the receiver, the target echo signal be sent to the receiver；
Step S106：The transmitting pumping signal by amplification is oriented to free space and carries out spoke by the radar antenna
Penetrate, and receive the target echo signal that target is reflected back, the target echo signal is sent to described and transmits/receives switch；
Step S107：The receiver is amplified to the amplitude of the target echo signal, by the target by amplification
Echo-signal is sent to the signal processor；
Step S108：The signal processor carries out the first processing to the target echo signal by amplification and operated,
And treated target echo signal is sent to the data processor；
Step S109：The data processor is enrolled the target that the signal processor is sent and returned according to default algorithm
Target component in ripple signal；The target component includes water level parameters and flow parameters；
Step S110：The radar terminal is in the presence of synchronization pulse, to being handled by the signal processor
Target echo signal and by the data processor processing echo-signal shown.
In measuring method provided in an embodiment of the present invention, when carrying out level measuring, the transmitting pumping signal is triangle
Ripple linear frequency modulation continuous wave；When carrying out flow velocity measurement, the transmitting pumping signal is single-frequency continuous wave signal.
The measuring method is generated using single-chip microcomputer control Direct Digital Synthesizer DDS to the frequency synthesizer
The triangle-wave frequency modulation continuous wave or single-frequency continuous wave signal switch over.
It should be noted that each embodiment in this specification is described by the way of progressive, each embodiment weight
Point explanation is all difference with other embodiment, between each embodiment identical similar part mutually referring to.
For device class embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is joined
See the part explanation of embodiment of the method.
Finally, it is to be noted that, herein, such as first and second or the like relational terms be used merely to by
One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation
Between any this actual relation or order be present.Moreover, term " comprising ", "comprising" or its any other variant meaning
Covering including for nonexcludability, so that process, method, article or equipment including a series of elements not only include that
A little key elements, but also the other element including being not expressly set out, or also include for this process, method, article or
The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged
Except other identical element in the process including the key element, method, article or equipment being also present.
For convenience of description, it is divided into various units during description apparatus above with function to describe respectively.Certainly, this is being implemented
The function of each unit can be realized in same or multiple softwares and/or hardware during invention.
As seen through the above description of the embodiments, those skilled in the art can be understood that the present invention can
Realized by the mode of software plus required general hardware platform.Based on such understanding, technical scheme essence
On the part that is contributed in other words to prior art can be embodied in the form of software product, the computer software product
It can be stored in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are causing a computer equipment
(can be personal computer, server, either network equipment etc.) performs some of each embodiment of the present invention or embodiment
Method described in part.
A kind of device and method for measuring water level and flow velocity provided by the present invention are described in detail above, herein
In apply specific case to the present invention principle and embodiment be set forth, the explanation of above example is only intended to help
Assistant solves the method and its core concept of the present invention；Meanwhile for those of ordinary skill in the art, the think of according to the present invention
Think, in specific embodiments and applications there will be changes, in summary, this specification content should not be construed as pair
The limitation of the present invention.
Claims (6)
- A kind of 1. equipment for measuring water level and flow velocity, it is characterised in that including：Master oscillator frequenc source, frequency synthesizer, lead shake Amplifier Chain, timer, transmit/receive switch, radar antenna, receiver, letter Number processor, data processor and radar terminal；Wherein：The master oscillator frequenc source is used to produce reference frequency signal；And the reference frequency signal is sent to the frequency synthesis Device and timer；The frequency synthesizer is used for according to default first frequency rule change, and line frequency change is entered to the reference frequency signal Change, produce transmitting pumping signal, receiver local oscillation signal and coherent reference signal respectively；The timer is used for according to default second frequency rule change, and line frequency change is entered to the reference frequency signal, Produce synchronization pulse and clock signal；And the synchronization pulse and clock signal are respectively sent at the signal Reason machine, data processor and radar terminal；The master shakes Amplifier Chain, for the power of the transmitting pumping signal to be amplified into predetermined power step by step, and will be through Cross the transmitting pumping signal of amplification and be transferred to by feeder line and described transmit/receive switch；It is described to transmit/receive switch, for when receiving the transmitting pumping signal of the process amplification, closing the receiver, and The transmitting pumping signal by amplification is transmitted to the radar antenna；And when receiving target echo signal, open The receiver, the target echo signal is sent to the receiver；The radar antenna is used to be radiated the transmitting pumping signal orientation free space by amplification, and receives mesh The target echo signal being reflected back is marked, the target echo signal is sent to described and transmits/receives switch；The receiver is used to be amplified the amplitude of the target echo signal, and the target echo signal by amplification is sent out Deliver to the signal processor；The signal processor is used to operate the processing of target echo signal progress first by amplification, and will pass through place The target echo signal of reason is sent to the data processor；The data processor is used to according to default algorithm, enroll in the target echo signal that the signal processor is sent Target component；The target component includes water level parameters and flow parameters；The radar terminal is used in the presence of synchronization pulse, to the target echo by signal processor processing Signal and the target echo signal handled by the data processor are shown.
- 2. equipment according to claim 1, it is characterised in that the frequency synthesizer includes：Direct Digital Synthesizer DDS and phase-locked loop pll.
- 3. equipment according to claim 2, it is characterised in that when carrying out level measuring, the transmitting pumping signal is Triangle-wave frequency modulation continuous wave；When carrying out flow velocity measurement, the transmitting pumping signal is single-frequency continuous wave signal；Single-chip microcomputer is additionally provided with the frequency synthesizer；The single-chip microcomputer is used to control the DDS, realizes the triangle-wave frequency modulation continuous wave and single-frequency continuous wave letter Number switching.
- A kind of 4. method for measuring water level and flow velocity, it is characterised in that equipment of the methods described based on measurement water level and flow velocity, institute Stating equipment includes：Master oscillator frequenc source, frequency synthesizer, lead shake Amplifier Chain, timer, transmit/receive switch, radar antenna, receiver, letter Number processor, data processor and radar terminal；Methods described includes：The master oscillator frequenc source produces reference frequency signal；And the reference frequency signal is sent to the frequency synthesizer and Timer；The frequency synthesizer enters line frequency change to the reference frequency signal according to default first frequency rule change, Transmitting pumping signal, receiver local oscillation signal and coherent reference signal are produced respectively；The timer enters line frequency change to the reference frequency signal, produced according to default second frequency rule change Synchronization pulse and clock signal；And the synchronization pulse and clock signal are respectively sent to the signal transacting Machine, data processor and radar terminal；The master shakes Amplifier Chain, the power of the transmitting pumping signal is amplified into predetermined power step by step, and will pass through and put Big transmitting pumping signal is transferred to by feeder line and described transmits/receives switch；It is described to transmit/receive switch, when receiving the transmitting pumping signal by amplification, close the receiver, and by institute The transmitting pumping signal by amplification is stated to transmit to the radar antenna；And when receiving target echo signal, described in opening Receiver, the target echo signal is sent to the receiver；The radar antenna is radiated the transmitting pumping signal orientation free space by amplification, and it is anti-to receive target The target echo signal being emitted back towards, the target echo signal is sent to described and transmits/receives switch；The receiver is amplified to the amplitude of the target echo signal, by by amplification target echo signal send to The signal processor；The signal processor carries out the first processing to the target echo signal by amplification and operated, and will be treated Target echo signal is sent to the data processor；The data processor enrolls the target in the target echo signal that the signal processor is sent according to default algorithm Parameter；The target component includes water level parameters and flow parameters；The radar terminal is in the presence of synchronization pulse, to the target echo signal by signal processor processing And the target echo signal by data processor processing is shown.
- 5. according to the method for claim 4, it is characterised in that when carrying out level measuring, the transmitting pumping signal is Triangle-wave frequency modulation continuous wave；When carrying out flow velocity measurement, the transmitting pumping signal is single-frequency continuous wave signal.
- 6. according to the method for claim 5, it is characterised in that the measuring method is using single-chip microcomputer control Direct Digital Frequency synthesizer DDS generates the triangle-wave frequency modulation continuous wave or single-frequency continuous wave signal to the frequency synthesizer and carried out Switching.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5589838A (en) * | 1994-09-06 | 1996-12-31 | The Regents Of The University Of California | Short range radio locator system |
| CN202382811U (en) * | 2011-11-25 | 2012-08-15 | 广州易茂科技发展有限公司 | Wireless remote transmission frequency-modulated radar digital level meter |
| CN202472910U (en) * | 2012-02-27 | 2012-10-03 | 上海水顿智能科技有限公司 | Terminal and system for monitoring radar liquid level flow rate |
| CN103090930A (en) * | 2011-10-28 | 2013-05-08 | 上海凡宜科技电子有限公司 | Radar level meter and method for processing signals thereof |
| CN203274852U (en) * | 2012-06-29 | 2013-11-06 | 罗斯蒙特储罐雷达股份公司 | Pulse level meter system based on pulse repetition rate controlled by temperature |
-
2014
- 2014-12-31 CN CN201410851958.1A patent/CN104482988B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5589838A (en) * | 1994-09-06 | 1996-12-31 | The Regents Of The University Of California | Short range radio locator system |
| CN103090930A (en) * | 2011-10-28 | 2013-05-08 | 上海凡宜科技电子有限公司 | Radar level meter and method for processing signals thereof |
| CN202382811U (en) * | 2011-11-25 | 2012-08-15 | 广州易茂科技发展有限公司 | Wireless remote transmission frequency-modulated radar digital level meter |
| CN202472910U (en) * | 2012-02-27 | 2012-10-03 | 上海水顿智能科技有限公司 | Terminal and system for monitoring radar liquid level flow rate |
| CN203274852U (en) * | 2012-06-29 | 2013-11-06 | 罗斯蒙特储罐雷达股份公司 | Pulse level meter system based on pulse repetition rate controlled by temperature |
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