CN109520593A - A kind of detection method using auto-alarming guide wave radar liquid level gauge - Google Patents
A kind of detection method using auto-alarming guide wave radar liquid level gauge Download PDFInfo
- Publication number
- CN109520593A CN109520593A CN201811421933.2A CN201811421933A CN109520593A CN 109520593 A CN109520593 A CN 109520593A CN 201811421933 A CN201811421933 A CN 201811421933A CN 109520593 A CN109520593 A CN 109520593A
- Authority
- CN
- China
- Prior art keywords
- module
- signal
- liquid level
- alarming
- auto
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention belongs to fluid level measuring device technical field, especially a kind of detection method using auto-alarming guide wave radar liquid level gauge；It mainly includes that equipment installation warns and warns with liquid level with parameter setting, signal acquisition, Signal Pretreatment, level calculating, failure；Auto-alarming guide wave radar liquid level gauge is mounted on tank top, parameter setting is carried out by monitoring center, signal acquisition module carries out data acquisition by transmitting microwave pulse, data-signal is converted into after the preprocessed resume module of the echo-signal of acquisition, finally liquid level is calculated through intelligent computing module, when liquidometer breaks down or liquid level exceeds specified liquid level range, fault warning module or liquid level module of warning will be sounded an alarm；The detection method is scientific and reasonable, and step is simple and easy, is able to carry out self diagnosis, fault alarm and liquid level and warns, and makes flexibility increase, function enhancing using auto-alarming guide wave radar liquid level gauge, and widely used, application environment is friendly.
Description
Technical field:
The invention belongs to fluid level measuring device technical fields, are related to a kind of method using measuring instrumentss detection liquid level, special
It is not a kind of detection method using auto-alarming guide wave radar liquid level gauge, is carried out using novel fast microprocessor higher
The signal analysis and processing of rate, when liquid level overruns, can automatic alarm, be more in line with industrial demand.
Background technique:
Guide wave radar liquid level gauge be it is a kind of be applied to level gauging instrument in chemical industry, guide wave radar liquid level gauge be with when
The electromagnetic pulse of radar level gauge based on the principle of reflection of domain, radar level gauge is propagated with the light velocity along wirerope or probe, and chance is worked as
When to measured medium surface, the partial pulse of radar level gauge is reflected to form echo and along same paths back to impulse ejection
Device, emitter is directly proportional with the propagation time of pulse therebetween at a distance from measured medium surface, is computed and obtains liquid level
Highly；Guide wave radar liquid level gauge can carry out continuous material level measurement, and the measurement of radar level gauge to liquid, particle and slurry
It is not influenced by media variations, temperature change, inert gas, steam, dust and foam etc.；Guide wave radar liquid level gauge is mainly applied
In the measurement of the liquid levels such as aqueous storage tank, soda acid storage tank, pulp storing tank, solid particle and small oil storage tank.
In the prior art, the Chinese patent of Publication No. CN207066543U discloses a kind of guided wave extension radar object
Position meter, radar electric storehouse connect radar antenna by guided wave extension tube；The radar electric storehouse includes: MCU unit and therewith
The microwave radio unit of connection, the design solve in conventional equipment in mal-conditions such as irradiation, high temperature and pressure, high/low temperature circulations
The application problem of lower radar levelmeter, but liquid level not prompt enough of warning will be lower than or be more than operational height, function is inadequate
It is perfect, and without providing detailed detection method；The Chinese patent of Publication No. CN207147588U discloses a kind of anti-caking
Brilliant guide wave radar liquid level gauge, primary structure include gauge outfit, guided wave bar and the sealed interface for connecting gauge outfit and guided wave bar, institute
Stating gauge outfit includes shell, and metal cap is provided at shell lower ending opening, and the metal-back portion of covering, which is fixed with, plays needle attachment base, close
Envelope connector includes signal transduction bar and pedestal, and signal transduction bar, which is located at, to be played below needle attachment base, and whorl of base is connected to described
Metal cap lower part is embedded with thermal insulation casing, thermal insulation casing outer wall and metal-back lid and bottom seat between pedestal and signal transduction bar
Inner wall fits, and thermal insulation casing inner wall fits with signal transduction bar outer wall, by the thermal insulation casing of setting, crystallization in gauge outfit and
Crystal at sealed interface no longer influences the conduction of electromagnetic wave at gauge outfit and sealed interface, it is ensured that level gauging it is normal
It carries out, but the technique of device detection liquid level is unknown, when itself fail, can not be found in time by staff,
And when liquid level will be lower than or more than operational height when can not warn in time, it is difficult to meet the needs of Chemical Manufacture.
To sum up, it is existing not perfect using the characterization processes of guide wave radar liquid level gauge, and work as guide wave radar liquid level gauge
It itself is difficult to find in time when breaking down, this will can not detect accurate data, influence normal production operation, or even give
The producer causes huge loss；When material liquid level will be lower than or be more than operational height, existing guide wave radar liquid level gauge
It can not warn in time, it is difficult to meet the needs of Chemical Manufacture；Therefore a kind of application auto-alarming guided wave radar liquid level is designed
The detection method of meter has a wide range of applications market and scientific meaning.
Summary of the invention:
It is an object of the invention to overcome disadvantage of the existing technology, detected for existing application guide wave radar liquid level gauge
The deficiencies of technique is not perfect, liquid level alarm function missing and equipment autodiagnosis function is weak is guaranteeing easy for installation, measurement precise conditions
Under, design a kind of detection method using auto-alarming guide wave radar liquid level gauge.
To achieve the goals above, a kind of detection side using auto-alarming guide wave radar liquid level gauge of the present invention
Method includes: that equipment installation warns and warns six with liquid level with parameter setting, signal acquisition, Signal Pretreatment, level calculating, failure
Processing step；Six processing steps are specific as follows:
(1) equipment installation and parameter setting: auto-alarming guide wave radar liquid level gauge is mounted on fluid to be measured storage tank,
Using the circuit connecting mode of 4-20mA/HART two-wire system by the auto-alarming guide wave radar liquid level gauge and monitoring center
Power information connection, by switch, the starting of auto-alarming guide wave radar liquid level gauge presses check key, to auto-alarming guided wave
Radar level gauge carries out school zero, measures total height, the volume of storage tank to auto-alarming guide wave radar liquid level gauge by monitoring center
Determine liquid level range, device normal working temperature range, every time transmitting electromagnetic pulse number, emit electromagnetic pulse time interval,
Level accounting equation and required constant are set；
(2) signal acquisition: monitoring center sends run signal to single-chip microcontroller, and signal control module instructs Microwave emission end hair
Radio magnetic field impulse, synchronous signal control module send enabling signal to intelligent computing module, and intelligent computing module receives starting letter
Record sends number and the time of electromagnetic pulse after number, and Microwave emission end emits electromagnetic pulse after receiving instruction, and electromagnetic pulse is met
Echo is formed after to fluid to be measured medium, echo is received by microwave receiving end, and received echo-signal is transmitted at microwave receiving end
To preprocessing module；
(3) Signal Pretreatment: after preprocessing module receives echo-signal, filter circuit is by the interference signal in echo-signal
Removal, and echo-signal is transmitted to signal classification amplification module by treated, signal is classified amplification module according to reception echo
The strong and weak amplification for carrying out different multiples of signal guarantees signal classification amplification module to prime analog-to-digital conversion module output phase with strong
The echo-signal of rate range is spent, echo-signal is converted to digital signal and is sent to intelligent operation by prime analog-to-digital conversion module
Module；
(4) level calculates: after intelligent computing module receives digital signal, intelligent computing module acquires the short time multiple
Echo digital signal carries out metering and time statistics, intelligent computing module according to multiple echo digital signal numbers of acquisition and when
Between, receive that record after enabling signal sends the number of electromagnetic pulse and the time calculates the liquid level of measured medium, intelligence is transported
It calculates module and liquid level information is transferred to electronic display, electronic display screen displays liquid level information；Intelligent operation simultaneously
Module sends liquid level information to rear class analog-to-digital conversion module, and rear class analog-to-digital conversion module will digitize liquid level information
It is converted into current signal and sends monitoring center to, monitoring center shows liquid level information；
(5) failure is warned: after the starting of auto-alarming guide wave radar liquid level gauge, fault warning module operating, when automatic report
When the temperature of alert formula guide wave radar liquid level gauge is below or above normal working temperature range, temperature monitoring module start loudspeaker and
Red eye, while temperature monitoring module sends alarm signal to signal control module, signal control module is by alarm signal
It is sent to monitoring center, when the circuit of auto-alarming guide wave radar liquid level gauge breaks down simultaneously, standby battery starting
Electric energy is provided for temperature monitoring module；When circuit supervision module detects that the circuit of auto-alarming guide wave radar liquid level gauge occurs
When failure, standby battery starting, circuit supervision module starting loudspeaker and amber lamp are warned；
(6) liquid level is warned: intelligent computing module sends the liquid level information calculated every time to liquid level and warns module, liquid
Position is warned after module receives liquid level elevation information, first through level comparison module by surveyed liquid level information and specified liquid level
Range is compared, and when liquid level is higher than maximum rated liquid level, level comparison module starts buzzer and red letter
Signal lamp, while level comparison module sends warning signal to monitoring center by data transmission module, when liquid level is lower than most
When small rated liquid level, level comparison module starts buzzer and blue signal lamp, while level comparison module passes through data
Transmission module sends warning signal to monitoring center, and the final liquid level for realizing auto-alarming guide wave radar liquid level gauge is warned, protected
Hinder normal Chemical Manufacture operation.
Auto-alarming guide wave radar liquid level gauge of the present invention, main structure include signal acquisition module, pre- place
Manage four module, single-chip microcontroller and monitoring center functional units, four functional units mainly by data transmission module, microprocessor,
Microwave emission end, microwave receiving end, filter circuit, signal classification amplification module, prime analog-to-digital conversion module, signal control mould
Block, intelligent computing module, HART communication module, rear class analog-to-digital conversion module, fault warning module, liquid level are warned module, electronics
Display screen, check key, switch, temperature monitoring module, standby battery, circuit supervision module, amber lamp, loudspeaker, red
Signal lamp, level comparison module, red eye, buzzer and the electrical connection combination of blue signal lamp are constituted；Wherein by electrometer
Monitoring center based on calculation machine processing function is mounted in shop equipment control room, monitoring center and rear class analog-to-digital conversion module
The connection of receiving end power information, monitoring center are converted into electric signal transmission to rear class analog-to-digital conversion module, rear class mould for signal is controlled
Number conversion module is converted into control signal after receiving electric signal, and rear class analog-to-digital conversion module will control signal and pass through HART communication mould
Block is converted into digital signal, and the output end of rear class analog-to-digital conversion module connect composition number with HART communication module receiving end power information
According to transmission module, data transmission module is transmitted for the bidirectional information of auto-alarming guide wave radar liquid level gauge and monitoring center；
The output end of HART communication module is connect with the signal control module receiving end power information of setting on the microprocessor, HART communication
Digital signal is passed to signal control module by module；Signal control module is the core cell of microprocessor, and microprocessor is also
Including intelligent computing module, the receiving end of intelligent computing module is connect with the output end power information of signal control module；Signal control
The output end of molding block is electrically connected with the switch outside auto-alarming guide wave radar liquid level gauge shell, opens switch, entire automatic
Alarm type guide wave radar liquid level gauge, which is powered, to be run；Signal control module, which is also ceased with fault warning modular telecommunications, to be connected, fault warning
Module is electrically connected by temperature monitoring module, standby battery, circuit supervision module, amber lamp, loudspeaker and red eye
Combination is constituted；The receiving end of temperature monitoring module and the receiving end of circuit supervision module are electrically connected with standby battery respectively, temperature
Degree monitoring module output end be electrically connected respectively with loudspeaker and red eye, the output end of temperature monitoring module also with signal control
The connection of molding block power information, circuit supervision module are electrically connected with loudspeaker and amber lamp respectively；When entire auto-alarming is led
When the temperature of wave radar level gauge is below or above normal working temperature range, temperature monitoring module starts loudspeaker and red letter
Signal lamp, while temperature monitoring module sends alarm signal to signal control module, alarm signal is sent to by signal control module
Monitoring center；When the circuit of auto-alarming guide wave radar liquid level gauge breaks down simultaneously, standby battery starting is temperature
Monitoring module provides electric energy；When circuit supervision module detects that present apparatus circuit breaks down, standby battery starting, circuit
Monitoring module starts loudspeaker and amber lamp carries out alarm；Signal control module receives the number letter of HART communication module transfer
Send the instruction of transmitting electromagnetic pulse after number to Microwave emission end, synchronous signal control module receives after digital signal to intelligent fortune
It calculates module and sends enabling signal, intelligent computing module records the number for sending electromagnetic pulse and time after receiving enabling signal；It is micro-
Wave transmitting terminal is connect with signal control module power information, and Microwave emission end emits electromagnetic pulse after receiving instruction, and electromagnetic pulse is met
Echo is formed after to measured medium, echo is received by microwave receiving end, and Microwave emission end and microwave receiving end form signal acquisition
Module, signal acquisition module are fixed at the bottom end of auto-alarming guide wave radar liquid level gauge；Microwave receiving end will be received
Echo-signal passes to preprocessing module, and microwave receiving end is connect with preprocessing module power information；Preprocessing module is by filtered electrical
Successively power information connects combination composition, the receiving end of filter circuit for road, signal classification amplification module and prime analog-to-digital conversion module
It is connect with the output end power information at microwave receiving end, the interference signal in echo-signal is removed and incites somebody to action that treated by filter circuit
Echo-signal is transmitted to signal classification amplification module；Signal is classified the receiving end of amplification module and the output end telecommunications of filter circuit
Breath connection, signal are classified amplification module according to the strong and weak amplification for carrying out different multiples of receives echo-signal, guarantee signal classification
Amplification module is to prime analog-to-digital conversion module output phase with the echo-signal of strength grade range；Signal is classified the defeated of amplification module
Outlet is connect with the receiving end power information of prime analog-to-digital conversion module, and echo-signal is converted to number by prime analog-to-digital conversion module
Signal is simultaneously sent to intelligent computing module；The receiving end of intelligent computing module and the output end power information of prime analog-to-digital conversion module
Connection, intelligent computing module carries out metering to multiple echo-signals that the short time acquires and the time counts, and then calculates tested
The liquid level of medium；It the receiving end of intelligent computing module and is fixed at outside auto-alarming guide wave radar liquid level gauge shell
The check key power information in portion connects, and every operational parameter of intelligent computing module can be corrected by pressing check key, guarantees that liquid level is high
Spend the accuracy that information calculates；Liquid level information is transferred to electronic display by intelligent computing module；Electronic display receives
It holds and is connect with the output end power information of intelligent computing module, electronic display screen displays liquid level information；Intelligent operation mould simultaneously
Block sends liquid level information to rear class analog-to-digital conversion module and liquid level is warned module, the receiving end of rear class analog-to-digital conversion module
It is connect with the output end power information of intelligent computing module, liquid level information is converted current signal by rear class analog-to-digital conversion module
It is transmitted to monitoring center；The warn receiving end of module of liquid level is connect with the output end power information of intelligent computing module, and liquid level is warned
Module is combined respectively with the electrical connection of red eye, buzzer and blue signal lamp by level comparison module and is constituted, and level compares
The output end of module and the receiving end power information of data transmission module connect；Liquid level is warned after module reception liquid level elevation information,
First liquid level information is compared with specified liquid level range through level comparison module；When liquid level is higher than maximum
When determining liquid level, level comparison module starts buzzer and red eye, while level comparison module is transmitted by data
Module sends warning signal to monitoring center, when liquid level is lower than minimum specified liquid level, the starting of level comparison module
Buzzer and blue signal lamp, while level comparison module sends warning signal to monitoring center by data transmission module, most
Realize that the liquid level of package unit is warned, and ensures normal Chemical Manufacture operation eventually.
Single-chip microcontroller of the present invention uses more high-end single-chip microcontroller, and major function includes data-transformation facility, Wei Chu
Manage device function, signal control function, intelligent calculation function, HART communication function, rear class analog-digital conversion function, fault warning function
Energy, liquid level alarm function, electronic display function, check key function and switching function.
Compared with prior art, the present invention the designed detection method section using auto-alarming guide wave radar liquid level gauge
It learns rationally, step is simple and easy, is able to carry out self diagnosis and fault alarm, can be timely when liquid level over range
It warns, the auto-alarming guide wave radar liquid level gauge perfect in shape and function, science is practical, is filled using 26GHz frequency and short wavelength emissions
It sets, is easily installed, and make flexibility increase, function enhancing using new type microprocessor, widely used, application environment friend
It is good.
Detailed description of the invention:
Fig. 1 is the process flow schematic block of the present invention that liquid level is measured using auto-alarming guide wave radar liquid level gauge
Figure
Fig. 2 is auto-alarming guide wave radar liquid level gauge main structure schematic block diagram of the present invention.
Fig. 3 is fault warning module bodies structural principle schematic block diagram of the present invention.
Fig. 4 is that liquid level of the present invention is warned module bodies structural principle schematic block diagram.
Fig. 5 is arch tank mounting means structural principle schematic block diagram of the present invention.
Fig. 6 is tapered shaped can mounting means structural principle schematic block diagram of the present invention.
Fig. 7 is the storage tank mounting means structural principle schematic block diagram of the present invention for having material heap.
Fig. 8 is additional reflection plate mounting means structural principle schematic block diagram of the present invention.
Fig. 9 is the mounting means structural principle schematic block diagram of additional waveguide pipe of the present invention or bypass pipe.
Specific embodiment:
The invention will be further described by way of example and in conjunction with the accompanying drawings.
Embodiment 1
A kind of detection method using auto-alarming guide wave radar liquid level gauge that the present embodiment is related to includes: equipment installation
It is calculated with parameter setting, signal acquisition, Signal Pretreatment, level, failure is warned and liquid level is warned six processing steps；Specific work
Steps are as follows for skill:
(1) equipment installation and parameter setting: auto-alarming guide wave radar liquid level gauge is mounted on fluid to be measured storage tank,
Using the circuit connecting mode of 4-20mA/HART two-wire system by auto-alarming guide wave radar liquid level gauge (or referred to as liquidometer)
It is connect with 4 power information of monitoring center, by switch 20, liquidometer starting presses check key 19, carries out school zero to liquidometer, leads to
Monitoring center 4 is crossed to the total height of liquidometer measurement storage tank, specified liquid level range, device normal working temperature range, every time hair
Radio magnetic field impulse number, time interval, level accounting equation and the required constant for emitting electromagnetic pulse are set；
(2) signal acquisition: monitoring center 4 sends run signal to single-chip microcontroller 3, and signal control module 12 instructs Microwave emission
7 transmitting electromagnetic pulse of end, synchronous signal control module 12 send enabling signal, intelligent computing module 13 to intelligent computing module 13
The number for sending electromagnetic pulse and time are recorded after receiving enabling signal, Microwave emission end 7 emits electromagnetic pulse after receiving instruction,
Electromagnetic pulse forms echo after encountering fluid to be measured medium, and echo is received by microwave receiving end 8, and microwave receiving end 8 will be received
Echo-signal passes to preprocessing module 2；
(3) Signal Pretreatment: after 2 receives echo-signal of preprocessing module, filter circuit 9 believes the interference in echo-signal
Number removal, and will treated echo-signal is transmitted to signal classification amplification module 10, signal is classified amplification module 10 according to connecing
The strong and weak amplification for carrying out different multiples for receiving echo-signal guarantees that signal is classified amplification module 10 to prime analog-to-digital conversion module 11
For output phase with the echo-signal of strength grade range, it is concurrent that echo-signal is converted to digital signal by prime analog-to-digital conversion module 11
Give intelligent computing module 13；
(4) level calculates: after intelligent computing module 13 receives digital signal, intelligent computing module 13 acquires the short time
Multiple echo digital signals carry out metering and time statistics, and intelligent computing module 13 is secondary according to multiple echo digital signals of acquisition
Several liquid levels that measured medium is calculated with the number of record transmission electromagnetic pulse after time, reception enabling signal and time,
Liquid level information is transferred to electronic display 18 by intelligent computing module 13, and electronic display 18 shows liquid level information；
Intelligent computing module 13 sends liquid level information to rear class analog-to-digital conversion module 15 simultaneously, and rear class analog-to-digital conversion module 15 will
Digitlization liquid level information is converted into current signal and sends monitoring center 4 to, and monitoring center 4 shows liquid level information；
(5) failure is warned: after liquidometer starting, fault warning module 16 is operated, when the temperature of liquidometer is lower than or high
When normal working temperature range, temperature monitoring module 21 starts loudspeaker 25 and red eye 26, while temperature monitoring module
21 send alarm signal to signal control module 12, and alarm signal is sent to monitoring center 4, works as liquid level by signal control module 12
When the circuit of meter breaks down simultaneously, the starting of standby battery 22 is that temperature monitoring module 21 provides electric energy；When circuit supervision mould
When block 23 detects that the circuit of liquidometer breaks down, standby battery 22 starts, and circuit supervision module 23 starts 25 He of loudspeaker
Amber lamp 24 is warned；
(6) liquid level is warned: intelligent computing module 13 sends the liquid level information calculated every time to liquid level and warns module
17, liquid level is warned after module 17 receives liquid level elevation information, first through level comparison module 27 by surveyed liquid level information and volume
Determine liquid level range to be compared, when liquid level is higher than maximum rated liquid level, level comparison module 27 starts bee
Ring device 29 and red eye 28, while level comparison module 27 sends letter of warning to monitoring center 4 by data transmission module 5
Number, when liquid level is lower than minimum specified liquid level, level comparison module 27 starts buzzer 29 and blue signal lamp 30,
Level comparison module 27 sends warning signal to monitoring center 4 by data transmission module 5 simultaneously, final to realize a whole set of liquidometer
Liquid level warn, ensure normal Chemical Manufacture operation.
Embodiment 2:
The auto-alarming guide wave radar liquid level gauge that the present embodiment is related to, main structure includes signal acquisition module 1, pre-
4 four processing module 2, single-chip microcontroller 3 and monitoring center functional units, four functional units are mainly by data transmission module 5, Wei Chu
Manage device 6, Microwave emission end 7, microwave receiving end 8, filter circuit 9, signal classification amplification module 10, prime analog-to-digital conversion module
11, signal control module 12, intelligent computing module 13, HART communication module 14, rear class analog-to-digital conversion module 15, fault warning mould
Block 16, liquid level warn module 17, electronic display 18, check key 19, switch 20, temperature monitoring module 21, standby battery 22,
Circuit supervision module 23, amber lamp 24, loudspeaker 25, red eye 26, level comparison module 27, red eye 28,
Buzzer 29 and the electrical connection combination of blue signal lamp 30 are constituted；Wherein by the monitoring center 4 based on electronic computer processing function
It is mounted in shop equipment control room, monitoring center 4 is connect with the receiving end power information of rear class analog-to-digital conversion module 15, in monitoring
The heart 4 will control signal and be converted into electric signal transmission to rear class analog-to-digital conversion module 15, and rear class analog-to-digital conversion module 15 receives telecommunications
Control signal is converted into after number, rear class analog-to-digital conversion module 15 will control signal and be converted into digital letter by HART communication module 14
Number, the output end of rear class analog-to-digital conversion module 15 connect composition data transmission module with 14 receiving end power information of HART communication module
5, data transmission module 5 is transmitted for the bidirectional information of auto-alarming guide wave radar liquid level gauge and monitoring center 4；HART communication
The output end of module 14 is connect with the 12 receiving end power information of signal control module being arranged on microprocessor 6, HART communication mould
Digital signal is passed to signal control module 12 by block 14；Signal control module 12 is the core cell of microprocessor 6, micro process
Device 6 further includes intelligent computing module 13, the receiving end of intelligent computing module 13 and the output end power information of signal control module 12
Connection；The output end of signal control module 12 is electrically connected with the switch 20 outside auto-alarming guide wave radar liquid level gauge shell, is opened
Breakdown closes 20, and entire auto-alarming guide wave radar liquid level gauge, which is powered, to be run；Signal control module 12 also with fault warning module
The connection of 16 power information, fault warning module 16 is by temperature monitoring module 21, standby battery 22, circuit supervision module 23, yellow
Signal lamp 24, loudspeaker 25 and the electrical connection combination of red eye 26 are constituted；The receiving end of temperature monitoring module 21 and circuit supervision
The receiving end of module 23 is electrically connected with standby battery 22 respectively, the output end of temperature monitoring module 21 respectively with loudspeaker 25 and red
Chrominance signal lamp 26 is electrically connected, and the output end of temperature monitoring module 21 is also connect with 12 power information of signal control module, circuit supervision
Module 23 is electrically connected with loudspeaker 25 and amber lamp 24 respectively；When the temperature of entire auto-alarming guide wave radar liquid level gauge is low
When normal working temperature range, temperature monitoring module 21 starts loudspeaker 25 and red eye 26, while temperature
Monitoring module 21 sends alarm signal to signal control module 12, and alarm signal is sent to monitoring center by signal control module 12
4；When the circuit of auto-alarming guide wave radar liquid level gauge breaks down simultaneously, the starting of standby battery 22 is monitoring temperature mould
Block 21 provides electric energy；When circuit supervision module 23 detects that present apparatus circuit breaks down, standby battery 22 starts, circuit
Monitoring module 23 starts loudspeaker 25 and amber lamp 24 carries out alarm；Signal control module 12 receives HART communication module 14 and passes
The instruction of transmitting electromagnetic pulse is sent after defeated digital signal to Microwave emission end 7, synchronous signal control module 12 receives number
Enabling signal is sent to intelligent computing module 13 after signal, record sends electromagnetism arteries and veins after intelligent computing module 13 receives enabling signal
The number of punching and time；Microwave emission end 7 is connect with 12 power information of signal control module, and Microwave emission end 7 is sent out after receiving instruction
Radio magnetic field impulse, electromagnetic pulse form echo after encountering measured medium, and echo is received by microwave receiving end 8,7 He of Microwave emission end
Microwave receiving end 8 forms signal acquisition module 1, and signal acquisition module 1 is fixed at auto-alarming guide wave radar liquid level gauge
Bottom end；Received echo-signal is passed to preprocessing module 2, microwave receiving end 8 and preprocessing module 2 by microwave receiving end 8
Power information connection；Preprocessing module 2 is classified amplification module 10 and prime analog-to-digital conversion module 11 successively by filter circuit 9, signal
Power information connection combination is constituted, and the receiving end of filter circuit 9 is connect with the output end power information at microwave receiving end 8, filter circuit 9
Interference signal in echo-signal is removed and by treated echo-signal is transmitted to signal classification amplification module 10；Signal point
The receiving end of grade amplification module 10 is connect with the output end power information of filter circuit 9, and signal is classified amplification module 10 according to reception
The strong and weak amplification for carrying out different multiples of echo-signal guarantees that signal classification amplification module 10 is defeated to prime analog-to-digital conversion module 11
The echo-signal of same intensity rate range out；Signal is classified the output end and prime analog-to-digital conversion module 11 of amplification module 10
Echo-signal is converted to digital signal and is sent to intelligent operation mould by the connection of receiving end power information, prime analog-to-digital conversion module 11
Block 13；The receiving end of intelligent computing module 13 is connect with the output end power information of prime analog-to-digital conversion module 11, intelligent operation mould
Block 13 carries out metering to multiple echo-signals that the short time acquires and the time counts, and then the liquid level for calculating measured medium is high
Degree；The receiving end of intelligent computing module 13 and the check key for being fixed at auto-alarming guide wave radar liquid level gauge hull outside
The connection of 19 power information, every operational parameter of intelligent computing module 13 can be corrected by pressing check key 19, guarantee liquid level letter
Cease the accuracy calculated；Liquid level information is transferred to electronic display 18 by intelligent computing module 13；Electronic display 18 connects
Receiving end is connect with the output end power information of intelligent computing module 13, and electronic display 18 shows liquid level information；Intelligence simultaneously
Computing module 13 sends liquid level information to rear class analog-to-digital conversion module 15 and liquid level is warned module 17, rear class analog-to-digital conversion
The receiving end of module 15 is connect with the output end power information of intelligent computing module 13, and rear class analog-to-digital conversion module 15 is by liquid level
Information is converted into current signal and is transmitted to monitoring center 4；Liquid level warn module 17 receiving end and intelligent computing module 13 it is defeated
Outlet power information connection, liquid level warn module 17 by level comparison module 27 respectively with red eye 28, buzzer 29 and indigo plant
The electrical connection combination of chrominance signal lamp 30 is constituted, the output end of level comparison module 27 and the receiving end power information of data transmission module 5
Connection；Liquid level warn module 17 receive liquid level elevation information after, first through level comparison module 27 by liquid level information with it is specified
Liquid level range is compared；When liquid level is higher than maximum rated liquid level, level comparison module 27 starts buzzing
Device 29 and red eye 28, while level comparison module 27 sends letter of warning to monitoring center 4 by data transmission module 5
Number, when liquid level is lower than minimum specified liquid level, level comparison module 27 starts buzzer 29 and blue signal lamp 30,
Level comparison module 27 sends warning signal to monitoring center 4 by data transmission module 5 simultaneously, final realization package unit
Liquid level is warned, and ensures normal Chemical Manufacture operation.
Single-chip microcontroller 3 that the present embodiment is related to uses more high-end single-chip microcontroller, and major function includes data-transformation facility, micro-
Processor function, signal control function, intelligent calculation function, HART communication function, rear class analog-digital conversion function, fault warning function
Energy, liquid level alarm function, electronic display function, check key function and switching function.
Embodiment 3
When the auto-alarming guide wave radar liquid level gauge that the present embodiment is related to is used for level gauging, specific mounting means
It is different according to the medium in the storage tank and storage tank of different size, it mainly include arch tank mounting means, tapered shaped can installation
Mode, the storage tank mounting means for having material heap, additional reflection plate mounting means and additional waveguide pipe or bypass pipe mounting means,
The specific process is as follows:
(1) arch tank mounting means: as shown in figure 5, the auto-alarming guide wave radar liquid level gauge is mounted on storage tank
At the 1/4 of top diameter or 1/6, and it is greater than 250 millimeters apart from tank skin minimum range, and signal acquisition module 1 is deep into tank
In length be greater than 10mm, the auto-alarming guide wave radar liquid level gauge cannot be mounted on the top of arch tank feeding inlet,
Sunshade and rain-proof measure should be taken when outdoor mounted；
(2) tapered shaped can mounting means: as shown in fig. 6, the auto-alarming guide wave radar liquid level gauge is mounted on taper
The middle position of tank top, and signal acquisition module 1 is deep into the length in tank greater than 10mm, guarantees the automatic alarm
Formula guide wave radar liquid level gauge can be measured that taper pot bottom；
(3) there is the storage tank mounting means of material heap: as shown in fig. 7, the auto-alarming guide wave radar liquid level gauge is installed
In the arch storage tank for having material heap, signal acquisition module 1 wants perpendicular alignmnet charge level, and signal acquisition module 1 is deep into tank
Length be greater than 10mm, if when material heap face is uneven and angle of rest (repose) is big, it is necessary to use the peace of universal flange adjustment signal acquisition module 1
Angle is filled, so that signal acquisition module 1 is directed at charge level as far as possible, and the auto-alarming guide wave radar liquid level gauge is mounted on storage
At the 1/4 of tank top diameter or 1/6, and it is greater than 250 millimeters apart from tank skin minimum range；
(4) it additional reflection plate mounting means: as shown in figure 8, when there is barrier to influence measurement in tank, to be installed in tank
Reflecting plate 31；Reflecting plate 31 is tiltedly mounted on barrier upper end, prevents interference signal from generating；
(5) mounting means of waveguide pipe or bypass pipe is added: as shown in figure 9, emit in tank when signal acquisition module 1
When having the barriers such as helper, limit switch, heating equipment and bracket in the region that electromagnetic pulse is radiated, using bypass pipe 32 or
Waveguide pipe 33 measures；When using bypass pipe 32, bypass pipe 32 is mounted on the outer side of storage tank, signal acquisition using flange connection
Module 1 is mounted on the upper end of bypass pipe 32, and signal acquisition module 1 is deep into the length in tank greater than 10mm；Use guided wave
When pipe 33, waveguide pipe 33 is mounted on side in storage tank, and signal acquisition module 1 is mounted on the upper end of waveguide pipe 33, and signal is adopted
Collection module 1 is deep into the length in tank greater than 10mm, and the middle upper end of waveguide pipe 33 is provided with isobaric hole 34, the diameter in isobaric hole 34
For 5-10mm；The diameter of waveguide pipe 33 is not less than 50mm, and the inner wall smooth of waveguide pipe 33；It is measured by the way of waveguide pipe
The medium of good fluidity can only be detected, is not capable of measuring sticky medium.
Claims (3)
1. a kind of detection method using auto-alarming guide wave radar liquid level gauge, it is characterised in that: install and join including equipment
Number settings, signal acquisition, Signal Pretreatment, level calculating, failure is warned and liquid level is warned six processing steps；Six technique steps
It is rapid specific as follows:
(1) equipment installation and parameter setting: auto-alarming guide wave radar liquid level gauge is mounted on fluid to be measured storage tank, is used
The circuit connecting mode of 4-20mA/HART two-wire system is by the auto-alarming guide wave radar liquid level gauge and monitoring center telecommunications
Breath connection, by switch, the starting of auto-alarming guide wave radar liquid level gauge presses check key, to auto-alarming guided wave radar
Liquidometer carries out school zero, total height, specified liquid by monitoring center to auto-alarming guide wave radar liquid level gauge measurement storage tank
Position range, device normal working temperature range, time interval, the level for emitting electromagnetic pulse number every time, emitting electromagnetic pulse
Accounting equation and required constant are set；
(2) signal acquisition: monitoring center sends run signal to single-chip microcontroller, and signal control module instructs Microwave emission end transmitting electricity
Magnetic field impulse, synchronous signal control module sends enabling signal to intelligent computing module, after intelligent computing module receives enabling signal
Record sends number and the time of electromagnetic pulse, and Microwave emission end emits electromagnetic pulse after receiving instruction, electromagnetic pulse encounter by
Echo is formed after surveying liquid medium, echo is received by microwave receiving end, and microwave receiving end passes to received echo-signal pre-
Processing module；
(3) Signal Pretreatment: after preprocessing module receives echo-signal, filter circuit goes the interference signal in echo-signal
It removes, and echo-signal is transmitted to signal classification amplification module by treated, signal is classified amplification module to be believed according to echo is received
Number the strong and weak amplification for carrying out different multiples, guarantee that signal is classified amplification module and exports same intensity to prime analog-to-digital conversion module
Echo-signal is converted to digital signal and is sent to intelligent operation mould by the echo-signal of rate range, prime analog-to-digital conversion module
Block；
(4) level calculates: after intelligent computing module receives digital signal, multiple echoes that intelligent computing module acquires the short time
Digital signal carries out metering and time statistics, intelligent computing module according to multiple echo digital signal numbers of acquisition and time,
The number for sending electromagnetic pulse is recorded after receiving enabling signal and the time calculates the liquid level of measured medium, intelligent operation mould
Liquid level information is transferred to electronic display, electronic display screen displays liquid level information by block；Intelligent computing module simultaneously
Send liquid level information to rear class analog-to-digital conversion module, rear class analog-to-digital conversion module will digitize the conversion of liquid level information
Monitoring center is sent to for current signal, and monitoring center shows liquid level information；
(5) failure is warned: after the starting of auto-alarming guide wave radar liquid level gauge, auto-alarming is worked as in the operating of fault warning module
When the temperature of guide wave radar liquid level gauge is below or above normal working temperature range, temperature monitoring module starts loudspeaker and red
Signal lamp, while temperature monitoring module sends alarm signal to signal control module, signal control module transmits alarm signal
To monitoring center, when the circuit of auto-alarming guide wave radar liquid level gauge breaks down simultaneously, standby battery starting is temperature
It spends monitoring module and electric energy is provided；When circuit supervision module detects that the circuit of auto-alarming guide wave radar liquid level gauge breaks down
When, standby battery starting, circuit supervision module starting loudspeaker and amber lamp are warned；
(6) liquid level is warned: intelligent computing module sends the liquid level information calculated every time to liquid level and warns module, and liquid level is shown
After alert module receives liquid level elevation information, first through level comparison module by surveyed liquid level information and specified liquid level range
It is compared, when liquid level is higher than maximum rated liquid level, level comparison module starts buzzer and red eye,
Level comparison module sends warning signal to monitoring center by data transmission module simultaneously, when liquid level is specified lower than minimum
When liquid level, level comparison module starts buzzer and blue signal lamp, while level comparison module transmits mould by data
Block sends warning signal to monitoring center, and the final liquid level for realizing auto-alarming guide wave radar liquid level gauge is warned, and ensures normal
Chemical Manufacture operation.
2. the detection method according to claim 1 using auto-alarming guide wave radar liquid level gauge, it is characterised in that: institute
The auto-alarming guide wave radar liquid level gauge main structure stated includes signal acquisition module, preprocessing module, single-chip microcontroller and monitoring
Four, center functional unit, four functional units are mainly by data transmission module, microprocessor, Microwave emission end, microwave receiving
End, filter circuit, signal classification amplification module, prime analog-to-digital conversion module, signal control module, intelligent computing module, HART
Communication module, rear class analog-to-digital conversion module, fault warning module, liquid level are warned module, electronic display, check key, switch, temperature
Spend monitoring module, standby battery, circuit supervision module, amber lamp, loudspeaker, red eye, level comparison module, red
Chrominance signal lamp, buzzer and the electrical connection combination of blue signal lamp are constituted；Wherein by the monitoring based on electronic computer processing function
It is centrally mounted in shop equipment control room, monitoring center is connect with the receiving end power information of rear class analog-to-digital conversion module, monitoring
Center will control signal and be converted into electric signal transmission to rear class analog-to-digital conversion module, after rear class analog-to-digital conversion module receives electric signal
It is converted into control signal, it is digital signal, rear class that rear class analog-to-digital conversion module, which will control signal by HART communication module converter,
The output end of analog-to-digital conversion module connect composition data transmission module with HART communication module receiving end power information, and data transmit mould
Block is transmitted for the bidirectional information of auto-alarming guide wave radar liquid level gauge and monitoring center；The output end of HART communication module with
Signal control module receiving end power information connection on the microprocessor is set, and digital signal is passed to letter by HART communication module
Number control module；Signal control module is the core cell of microprocessor, and microprocessor further includes intelligent computing module, and intelligence is transported
The receiving end for calculating module is connect with the output end power information of signal control module；The output end and automatic alarm of signal control module
Switch electrical connection outside formula guide wave radar liquid level gauge shell, opens switch, and entire auto-alarming guide wave radar liquid level gauge is powered
Operation；Signal control module, which is also ceased with fault warning modular telecommunications, to be connected, and fault warning module is by temperature monitoring module, spare storage
Battery, circuit supervision module, amber lamp, loudspeaker and red eye electrical connection combination are constituted；Temperature monitoring module connects
The receiving end of receiving end and circuit supervision module is electrically connected with standby battery respectively, the output end of temperature monitoring module respectively with loudspeaker
And red eye electrical connection, the output end of temperature monitoring module also connect with signal control module power information, circuit supervision
Module is electrically connected with loudspeaker and amber lamp respectively；Be lower than when the temperature of entire auto-alarming guide wave radar liquid level gauge or
When higher than normal working temperature range, temperature monitoring module starts loudspeaker and red eye, while temperature monitoring module is to letter
Number control module sends alarm signal, and alarm signal is sent to monitoring center by signal control module；When auto-alarming guided wave
When the circuit of radar level gauge breaks down simultaneously, standby battery starting provides electric energy for temperature monitoring module；When circuit is supervised
When control module detects that present apparatus circuit breaks down, standby battery starting, circuit supervision module starts loudspeaker and yellow letter
Signal lamp carries out alarm；It sends and emits to Microwave emission end after the digital signal of signal control module reception HART communication module transfer
The instruction of electromagnetic pulse, synchronous signal control module receive digital signal after to intelligent computing module send enabling signal, intelligence
Computing module records the number for sending electromagnetic pulse and time after receiving enabling signal；Microwave emission end and signal control module electricity
Information connection, Microwave emission end emit electromagnetic pulse after receiving instruction, and electromagnetic pulse forms echo, echo after encountering measured medium
It is received by microwave receiving end, Microwave emission end and microwave receiving end form signal acquisition module, signal acquisition module fixed setting
In the bottom end of auto-alarming guide wave radar liquid level gauge；Received echo-signal is passed to preprocessing module by microwave receiving end,
Microwave receiving end is connect with preprocessing module power information；Preprocessing module is by filter circuit, signal classification amplification module and prime
Successively power information connection combination is constituted analog-to-digital conversion module, the receiving end of filter circuit and the output end power information at microwave receiving end
Interference signal in echo-signal remove and will treated that echo-signal is transmitted to that signal is classified amplifies by connection, filter circuit
Module；Signal is classified the receiving end of amplification module and the output end power information of filter circuit connects, and signal is classified amplification module root
According to the strong and weak amplification for carrying out different multiples of receives echo-signal, guarantee that signal is classified amplification module to prime analog-to-digital conversion module
Echo-signal of the output phase with strength grade range；Signal is classified the output end of amplification module and connecing for prime analog-to-digital conversion module
Echo-signal is converted to digital signal and is sent to intelligent computing module by the connection of receiving end power information, prime analog-to-digital conversion module；
The receiving end of intelligent computing module is connect with the output end power information of prime analog-to-digital conversion module, and intelligent computing module is to the short time
Multiple echo-signals of acquisition carry out metering and time statistics, and then calculate the liquid level of measured medium；Intelligent operation mould
The receiving end of block is connect with the check key power information for being fixed at auto-alarming guide wave radar liquid level gauge hull outside, is pressed
Check key can correct every operational parameter of intelligent computing module, guarantee the accuracy that liquid level information calculates；Intelligence fortune
It calculates module and liquid level information is transferred to electronic display；The output end electricity of electronic display receiving end and intelligent computing module
Information connection, electronic display screen displays liquid level information；Intelligent computing module sends liquid level information to rear class simultaneously
Analog-to-digital conversion module and liquid level are warned module, the output end telecommunications of the receiving end of rear class analog-to-digital conversion module and intelligent computing module
Breath connection, rear class analog-to-digital conversion module convert current signal for liquid level information and are transmitted to monitoring center；Liquid level is warned mould
The receiving end of block is connect with the output end power information of intelligent computing module, liquid level warn module by level comparison module respectively with it is red
Chrominance signal lamp, buzzer and the electrical connection combination of blue signal lamp are constituted, the output end and data transmission module of level comparison module
Receiving end power information connection；Liquid level is warned after module receives liquid level elevation information, first through level comparison module by liquid level
Information is compared with specified liquid level range；When liquid level is higher than maximum rated liquid level, level comparison module
Start buzzer and red eye, while level comparison module sends letter of warning to monitoring center by data transmission module
Number, when liquid level is lower than minimum specified liquid level, level comparison module starts buzzer and blue signal lamp, while object
Bits comparison module sends warning signal to monitoring center by data transmission module, and the final liquid level for realizing package unit is warned,
Ensure normal Chemical Manufacture operation.
3. the detection method according to claim 2 using auto-alarming guide wave radar liquid level gauge, it is characterised in that: institute
The single-chip microcontroller stated uses more high-end single-chip microcontroller, and major function includes data-transformation facility, microprocessor function, signal control
Function, intelligent calculation function, HART communication function, rear class analog-digital conversion function, fault warning function, liquid level alarm function, electricity
Sub- display screen functions, check key function and switching function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811421933.2A CN109520593A (en) | 2018-11-27 | 2018-11-27 | A kind of detection method using auto-alarming guide wave radar liquid level gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811421933.2A CN109520593A (en) | 2018-11-27 | 2018-11-27 | A kind of detection method using auto-alarming guide wave radar liquid level gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109520593A true CN109520593A (en) | 2019-03-26 |
Family
ID=65779176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811421933.2A Pending CN109520593A (en) | 2018-11-27 | 2018-11-27 | A kind of detection method using auto-alarming guide wave radar liquid level gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109520593A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113159987A (en) * | 2021-04-14 | 2021-07-23 | 广东核电合营有限公司 | Fault processing method and system for nuclear power station |
| WO2021179478A1 (en) * | 2020-03-09 | 2021-09-16 | 苏州长光华医生物医学工程有限公司 | Automatic calibration method, system, and device for use in substrate solution volume detection |
| CN113701851A (en) * | 2021-09-29 | 2021-11-26 | 北京锐达仪表有限公司 | Oil well liquid level measuring device and liquid level type measuring method |
| CN118129864A (en) * | 2024-05-07 | 2024-06-04 | 铭沣工业自动化（上海）有限公司 | Millimeter wave radar-based liquid level measurement method and system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6295018B1 (en) * | 1999-09-27 | 2001-09-25 | Rosemount Inc. | Low power radar level instrument with enhanced diagnostics |
| CN1761858A (en) * | 2003-03-21 | 2006-04-19 | Saab罗斯蒙特储罐雷达股份公司 | System and method in a radar level gauging system |
| CN1957237A (en) * | 2004-05-25 | 2007-05-02 | 罗斯蒙德公司 | Test apparatus for a waveguide sensing level in a container |
| CN102007383A (en) * | 2008-04-21 | 2011-04-06 | 罗斯蒙特雷达液位股份公司 | Radar level gauging system with galvanically isolating communication link |
| CN102494737A (en) * | 2011-12-06 | 2012-06-13 | 余姚市供电局 | Oil level monitoring method and system of oil immersed type transformer |
| CN102980633A (en) * | 2012-12-06 | 2013-03-20 | 中国地质调查局水文地质环境地质调查中心 | Electromagnetic wave muddy water level monitoring device and system of torrential floods and debris flows |
-
2018
- 2018-11-27 CN CN201811421933.2A patent/CN109520593A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6295018B1 (en) * | 1999-09-27 | 2001-09-25 | Rosemount Inc. | Low power radar level instrument with enhanced diagnostics |
| CN1761858A (en) * | 2003-03-21 | 2006-04-19 | Saab罗斯蒙特储罐雷达股份公司 | System and method in a radar level gauging system |
| CN1957237A (en) * | 2004-05-25 | 2007-05-02 | 罗斯蒙德公司 | Test apparatus for a waveguide sensing level in a container |
| CN102007383A (en) * | 2008-04-21 | 2011-04-06 | 罗斯蒙特雷达液位股份公司 | Radar level gauging system with galvanically isolating communication link |
| CN102494737A (en) * | 2011-12-06 | 2012-06-13 | 余姚市供电局 | Oil level monitoring method and system of oil immersed type transformer |
| CN102980633A (en) * | 2012-12-06 | 2013-03-20 | 中国地质调查局水文地质环境地质调查中心 | Electromagnetic wave muddy water level monitoring device and system of torrential floods and debris flows |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021179478A1 (en) * | 2020-03-09 | 2021-09-16 | 苏州长光华医生物医学工程有限公司 | Automatic calibration method, system, and device for use in substrate solution volume detection |
| CN113159987A (en) * | 2021-04-14 | 2021-07-23 | 广东核电合营有限公司 | Fault processing method and system for nuclear power station |
| CN113701851A (en) * | 2021-09-29 | 2021-11-26 | 北京锐达仪表有限公司 | Oil well liquid level measuring device and liquid level type measuring method |
| CN113701851B (en) * | 2021-09-29 | 2023-11-21 | 北京锐达仪表有限公司 | Oil well liquid level measuring device and liquid level type measuring method |
| CN118129864A (en) * | 2024-05-07 | 2024-06-04 | 铭沣工业自动化（上海）有限公司 | Millimeter wave radar-based liquid level measurement method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109520593A (en) | A kind of detection method using auto-alarming guide wave radar liquid level gauge | |
| CN108398442B (en) | Online immersion type microwave radar moisture meter and measurement method thereof | |
| CN217083884U (en) | Ultrasonic array energy synthesis probe interface measuring system | |
| CN107830903B (en) | Microwave solid flowmeter detecting system and device | |
| CN201622097U (en) | Ultrasonic gasoline tank oil level sensor | |
| CN203688038U (en) | Distributed wireless ultrasonic liquid level measurement instrument | |
| CN109297566A (en) | A kind of auto-alarming guide wave radar liquid level gauge | |
| CN209342194U (en) | A kind of auto-alarming guide wave radar liquid level gauge | |
| CN207741809U (en) | Multichannel ultrasonic open-channel meter | |
| CN108106682B (en) | Multi-channel ultrasonic open channel flowmeter | |
| CN203489945U (en) | External attaching type ultrasound liquid level meter | |
| CN207439505U (en) | A kind of ultrasonic level gage | |
| CN107063391B (en) | Non-contact type double-material-level intelligent detection system | |
| CN109915657A (en) | Deep sea vertical pipe collision avoidance system and method | |
| CN213714455U (en) | Aluminum electrolysis raw material storage bin material level detection device | |
| CN205593602U (en) | Desulfurizing slurry case liquid level measurement device based on radar level gauge | |
| CN210321896U (en) | Long horn mouth type high-frequency radar level meter | |
| CN112228047B (en) | Drilling overflow leakage judging method | |
| CN113970594A (en) | Ultrasonic array energy synthesis probe interface measuring system | |
| CN203908639U (en) | Liquid level online monitoring system for power transformer cooling liquid | |
| CN108008270A (en) | One kind can monitor partial discharge Assembled high-voltage shunted capacitor device on-line | |
| CN2914112Y (en) | Axial displacement detecting device of hydroelectric generating set | |
| CN204007794U (en) | A kind of generator leakproof fuel cell ultrasonic measurement warning device | |
| CN105867444A (en) | Ultrasonic liquid level measurement and automatic control device | |
| CN217560756U (en) | Device for measuring static liquid level of geothermal well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190326 |
|
| RJ01 | Rejection of invention patent application after publication |