CN105403286B - Electromagnetism nodal point level-sensing device - Google Patents
Electromagnetism nodal point level-sensing device Download PDFInfo
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- CN105403286B CN105403286B CN201510961675.7A CN201510961675A CN105403286B CN 105403286 B CN105403286 B CN 105403286B CN 201510961675 A CN201510961675 A CN 201510961675A CN 105403286 B CN105403286 B CN 105403286B
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- 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
Abstract
The present invention relates to level-sensing device field, a kind of electromagnetism nodal point level-sensing device is disclosed, the transmitting antenna that at least one at least three antennas is connected with electromagnetic radiation component, remaining reception antenna being connected with electromagnetic wave receiving part；Transmitting antenna constitutes at least two groups with reception antenna and emits receiving channel；Electromagnetic wave receiving part receives the electromagnetic wave signal in each transmitting receiving channel and sends it to arithmetic processor；Each electromagnetic wave signal is processed into the related data and transmitting antenna and/or reception antenna after the electromagnetic wave signal intensity-related data of each transmitting receiving channel in the location information integrated treatment where material to be measured in space into the level of filler material information measured in space by arithmetic processor, and the material position information is transferred to signal output component and display unit；The present invention can adapt to various working environment, is suitable for various materials, the dotted data of material, sectional view or 3 dimensional drawing can be presented；It can show material layering material position；Strong antijamming capability.
Description
Technical field
The present invention relates to level-sensing device field, more particularly to a kind of electromagnetism nodal point level-sensing device.
Background technology
It is right due to the needs of automation control and safety monitoring in the industrial or agricultural such as electric power, metallurgy, chemical industry, mining industry field
Height, position, the quantity of solid material in container, in equipment are detected and monitor.
The level-sensing device current material-level detecting device main sub-material bit switch and continuously monitored.Level switch is mainly with contact
Based on formula, mainly there are radio frequency admittance material level indicator, capacitive bin level switch, tuning-fork type level switch, Anti-rotation type material level switch etc., even
The level-sensing device of continuous monitoring mainly has radar level gauge, ultrasonic material level detection unit, weight dropper charge level indicator, capacitance level meter, laser material position
Meter, guide wave radar level gauge etc..Radio frequency admittance level-sensing device switchs and capacitance level meter switchs in actual operation, due to bridging
Influence easy to produce wrong report, simultaneously because feeler lever is generally long, be easy to be damaged by material, usually maintenance is big；Tuning-fork type
The mechanical type materials bit switch such as level switch, Anti-rotation type material level switch, there is the requirement in terms of more mechanical mechanism, simultaneously because
It works long hours and easy tos produce mechanical fatigue and failure, service life is not generally very long；Current Non-contact type level gage,
If radar, ultrasonic wave and laser material position meter to the environment of measurement and are equipped with very high requirement, when measuring powder in space environment
When dirt is bigger, it is difficult to accurately measure, and maintenance is also bigger when usually use；Guided wave radar and capacitance level meter by
In bridging on guide rod or conductor rope, it may appear that more serious wrong report situation usually safeguards that material is also bigger；Weight dropper charge level indicator exists
In practical measurement, since principle and design feature are susceptible to and bury the failures such as hammer, disconnected hammer.
The level-sensing device measured by transmission electromagnetic wave removes the radar material according to transmitting and receiving time difference calculating distance
Outside the radar level gauge of position meter and Doppler effect according to the opposite variation of wave frequency, also microwave level switch is micro-
Wave level switch utilize between a ballistic device and a receiving device constitute an electromagnetic wave channel, when material close to this
When channel, the arithmetic processor of electromagnetic wave receiver part is connected according to electromagnetic wave signal intensity, or whether receive electromagnetic wave
Signal judges whether material reaches and measures position, and will determine that result is exported in the form of switching value.Microwave level switch emission part
It is independent component to divide with receiving portion, and emission element is only controlled by ballistic device internal circuit, not by arithmetic processor
Control.Microwave level switch is the material position information that a point is judged according to the data in a send-receive channel.It is multigroup micro-
Wave is at same measurement space, due to mutual interference, it is difficult to accurately be measured.It is domestic at present related to microwave level switch
Patent such as：The patent of domestic patent No. CN201220255937.X " open by a kind of electromagnetic wave of non-contact detection bin-level
Close " it is a typical microwave level switch, the specific of Cucumber can be penetrated using electromagnetic wave, by antenna and tested material
Isolation.A kind of domestic patent CN201420013939.7 " high-pressure roller mill microwave material-level detecting device ", domestic patent
CN201320892134X " a kind of rubbish hopper microwave level-sensing device mounting structure ", be all in fact based on microwave level switch,
A kind of application in some specific equipment combines the specific running of specific equipment using multigroup independent microwave level switch,
Its level measurement basis is still single complete microwave level switch, is all in user terminal（PLC or DCS）To microwave material position
The follow-up utilization of one kind for switching the existing level signals provided, needs user oneself into edlin, programming, it is desirable that user must have
Standby higher professional skill is horizontal.
But in practice, in the utilization for especially being used to measure container contents material position, due to reporting by mistake frequently,
The reasons such as big, the positioning complexity of poor reliability, maintenance cause microwave level switch not to be widely used really, main cause
It is as follows：
1, it can not use reliably and with long-term, wrong report is frequent.Due to actually constituting typically for measuring environment and tested material
Constantly variation, is not very stable, moisture content, temperature, density, material composition, space airborne dust concentration etc. all seriously affect entire measurement
The dielectric property in space, causes measurement result serious deviation occur, and the shape of piling up of tested material also results in measurement result
Deviation is very big, and as a result wrong report is frequent.
2, since transmitting antenna and reception antenna are using directional aerial, installation site and antenna is directed toward and required
It is high；The change being directed toward using the vibration of process or antenna, leads to warning error.
3, due to itself element problem of electromagnetic radiation unit, there is transmission power deviation, measurement error or mistake occur；
4, due to electromagnetic wave receiving unit self problem, there is the calculating deviation of receiving intensity；
5, due to the influence of the factors such as moisture content in environment in actual use, cause antenna pole to changing, cause to measure
Deviation；
6, it is difficult to distinguish antenna bridging still completely to expect, causes to report by mistake；
7, it is difficult to hold electromagnetic radiation wavelength and power；
8, for have material state and without material state recognition difficulty it is big, discrimination is small；
9, response environment electromagnetic interference capability is poor；
10, measuring system can not realize when directional emittance unit damages, and be susceptible to measurement error；
11, it is only used for measuring whether some point has material position, the variation of whole material position can not be detected；
12, can only provide one whether there is or not switching signal, application range is small.
13, emitting portion is not controlled by arithmetic processor, needs the parameters such as artificial frequently adjustment transmission power；If ring
When border dielectric property is changed greatly, can frequently it report by mistake.
14, when same measurement space uses, electromagnetic wave wave signal influences each other multigroup microwave level switch, influences to measure
As a result accuracy.
15, multigroup microwave level switch uses simultaneously, with high costs.
16, single-point material position information can only be calculated, material position information and plane outside single-point can not be obtained by COMPREHENSIVE CALCULATING
Figure or solid figure.
Invention content
Goal of the invention：For problems of the prior art, the present invention provides a kind of electromagnetism nodal point level-sensing device, fully
Significant electromagnetism when using electromagnetic wave across material and caused by electromagnetic wave is when material interface is because of reflection or refraction
Intensity of wave difference passes through the comprehensive of data model especially by the verification or comparative analysis of multipoint data and multipoint data
Operation is closed, the material position data reliable, accurate, abundant, precision is controllable are obtained；The level-sensing device Measurement reliability is high, and measurement data is accurate
Really, reliably, high certainty of measurement and controllable；A variety of severe work condition environments are can adapt to, various material states are suitable for, it is anti-interference
Ability is strong, and maintenance is small, and situ configuration is convenient, and no mechanical movement part service life is long；The point of material can not only be showed
Shape data can also show the sectional view or 3 dimensional drawing of whole material；Each layer in stratified mixture material can also be measured
The material position information of material.
Technical solution：The present invention provides a kind of electromagnetism nodal point level-sensing devices, including at least three antennas, at least one electricity
Magnetic wave emission element, at least one electromagnetic wave receiving part, arithmetic processing unit, signal output component and display unit；It is described
At least one in three antennas is the transmitting antenna being connected with the electromagnetic radiation component, remaining is to be connect with the electromagnetic wave
Receive the connected reception antenna of component；The electromagnetic wave receiving part, the signal output component and the display unit with
The arithmetic processor connection；Where the transmitting antenna and the reception antenna are separately fixed at material to be measured in space to be measured
Different location at, and the transmitting antenna and the reception antenna constitute at least two groups send-receive channel；The electromagnetic wave
Receiving part receives the electromagnetic wave signal in each send-receive channel and each electromagnetic wave signal is sent to the fortune
Calculate processor；The electromagnetic wave that each electromagnetic wave signal is processed into each send-receive channel by the arithmetic processor is believed
After number intensity-related data, by specific mathematical model and/or specific application program by each electromagnetic wave signal intensity
Related data and the transmitting antenna and/or the reception antenna are at the location information synthesis operation in the measurement space
Level of filler material information is managed into, and the level of filler material information is transferred to the signal output component and the display unit；Institute
It states signal output component to export the level of filler material information signal, the display unit gives the level of filler material presentation of information
User.
The present invention also provides a kind of electromagnetism nodal point level-sensing devices, including at least three antennas, at least one electromagnetic wave to send out
Penetrate component, at least one electromagnetic wave receiving part, arithmetic processing unit, signal output component and display unit；Three days
At least one in line is the transmitting antenna being connected with the electromagnetic radiation component, remaining is and the electromagnetic wave receiving part
Connected reception antenna；The electromagnetic wave receiving part, the signal output component and the display unit with the fortune
Calculate processor connection；Difference where the transmitting antenna and the reception antenna are separately fixed at material to be measured in measurement space
At position, and the transmitting antenna constitutes at least two groups send-receive channel with the reception antenna；The electromagnetic wave receiving part
Part receives the electromagnetic wave signal in each send-receive channel and each electromagnetic wave letter is sent to the calculation process
Device；The electromagnetic wave signal that each electromagnetic wave signal is processed into the send-receive channel by the arithmetic processor respectively is strong
After spending related data, according to each electromagnetic wave signal intensity-related data respectively to the strength information of each electromagnetic wave signal
It is analyzed, judges the starting material material position information of each send-receive channel position, finally to all described first
The judging result of beginning level of filler material information, the level of filler material generated in the measurement space after unified logic judgment are believed
Breath；The level of filler material information is transferred to the signal output component and the display unit by the arithmetic processor；It is described
Signal output component exports the level of filler material information signal, and the display unit is by the level of filler material presentation of information to use
Family.
Further, the arithmetic processor according to operation require to control all send-receive channels composition and
The sequence of all send-receive channel emission-reception electromagnetic wave signals.
Further, the electromagnetic radiation component is connected with the arithmetic processor.
Further, the arithmetic processor is by controlling each transmitting day of electromagnetic radiation component indirect control
Line emits electromagnetic wave and emits the power and intensity of electromagnetic wave, by controlling each institute of electromagnetic wave receiving part indirect control
Reception antenna is stated to receive electromagnetic wave and receive the power and intensity of electromagnetic wave.
Further, the arithmetic processor is according to each transmitting antenna transmitting electromagnetic wave of measurement request control, control
Each reception antenna receives electromagnetic wave, and then controls the composition and/or sequence in the send-receive channel.By to transmitting-
The composition and/or sequence of receiving channel carry out control of the control realization to send-receive channel rule, then will emit again-connect
The electromagnetic wave signal intensity-related data received in channel integrates calculation process with the location information of each transmitting antenna and reception antenna
It is presented to the user at the material position numerical value, the vertical cross section of material or the stereogram of material of material, keeps user more visual and clear
Recognize the material position situation of material in ground.
Preferably, the electromagnetic radiation component and the electromagnetic wave receiving part are by the portion with electromagnetic wave transmission-receiving function
Part serves as, the arithmetic processor control component transmitting or reception electromagnetic wave with electromagnetic wave transmission-receiving function.It is i.e. electric
Magnetic wave emission element and electromagnetic wave receiving part can have electromagnetic wave transmission-receiving function by one controlled by arithmetic processor
Component realize.
Further, the electromagnetism nodal point level-sensing device also includes switching part, the electromagnetic radiation component and institute
It states electromagnetic wave receiving part by the switching part to be connected with each antenna, the switching part and the arithmetic processor
It is connected；The arithmetic processor is controlled between each transmitting antenna and each reception antenna mutually by the switching part
Switching.In practical applications, transmitting antenna is identical with reception antenna, so completely can be transmitting antenna as reception day
Line uses reception antenna as transmitting antenna, and the switching part controlled by arithmetic processor in this level-sensing device being capable of thing
Mutual switching between first transmitting antenna and reception antenna.
Further, the electromagnetism nodal point level-sensing device also includes and is connected for verifying with the electromagnetic radiation component
The transmitter of its working condition verifies antenna, and is connected for verifying connecing for its working condition with the electromagnetic wave receiving part
It receives device and verifies antenna.In practical applications, electromagnetic radiation component or electromagnetic wave receiving part sometimes will appear failure without
It can emit or receive electromagnetic wave, whether they still work normally if not verifying antenna verification, can usually judge to survey to user
Whether amount accurately causes difficulty, so the present invention is provided with verification antenna, is ensuring electromagnetic radiation component and electromagnetic wave reception
Component judge again in the case of working normally measure whether accurate result can more rationally, in order to keep check results more accurate
Really, preferably ensure that transmitter verification antenna and receiver verification antenna will not all be buried at any time by material to be measured.
Further, the electromagnetism nodal point level-sensing device further includes at least one detection antenna, and the detection antenna is set
It is placed in the position that the material to be measured can not touch in the measurement space, for detecting the environment ginseng in the measurement space
Number, to provide reference data with the calculation process of processor to be described.Have since the environment measured in space is at any time
The state that may change, such as the dielectric constant of environment will change with the variation of the dust granule in environment, electromagnetic wave
Electromagnetic wave signal in each send-receive channel that receiving part receives can also become against the variation of the dielectric constant of environment
Change, if not considering the influence of these environmental parameters, the level of filler material information that final arithmetic processor operation obtains may not
Accurately, it so being provided with above-mentioned detection antenna in the present invention, is arrived for measuring environment parameter at any time, and using detection antenna measurement
Environmental parameter electromagnetic wave signal that electromagnetic wave receiving part is received be modified, revised electromagnetic wave signal retransmits
Calculation process is carried out to obtain more accurate level of filler material information to arithmetic processor.
Preferably, the arithmetic processor is an independent processor or the arithmetic processor by multiple processing
Device forms.Arithmetic processor in the present invention is taken upon oneself several posts, can be according to not if an independent processor operation is slower
Same function is divided into be made of multiple processors, and each processor is only responsible for a function, and operation can be than very fast in this way.
Preferably, the level of filler material information include the material position numerical value of material, the two-dimensional cross section of material and material three
Tie up stereogram.Material position numerical value is more direct, and the two-dimensional cross section and 3 dimensional drawing of material compare visual pattern, user experience compared with
It is good.
Preferably, the transmitting antenna and/or the reception antenna are directional aerial or omnidirectional antenna.
Preferably, the material to be measured is solid material, liquid material or the mixed material of layering.
Preferably, the electromagnetism nodal point level-sensing device can measure the material of every layer of material in the mixed material of the layering
Position.This electromagnetism nodal point level-sensing device scope of application is very extensive.
Advantageous effect：Electromagnetic wave receiving part in this electromagnetism nodal point level-sensing device receives at least two groups simultaneously and emits-connect
The electromagnetic wave signal in channel is received, it is strong that integral electromagnetic wave signal can be uniformly processed in each electromagnetic wave signal by arithmetic processor
Related data is spent, and by the electromagnetic wave signal intensity-related data and transmitting antenna and/or is connect by specific mathematical model
The antenna level of filler material information integral in the location information synthesis calculation process where material to be measured in space is received, data are passed through
Comparison, analysis and fairly large synthesis operation realize that highly reliable measurement judges；And utilize a large amount of multiple spot number
According to this and corresponding application program, realization judge the material position of non-antenna contact position, while level-sensing device realization is very
The highly reliable measurement of complex environment is suitable for various workings, the adverse circumstances such as airborne dust, fog, high temperature, corrosion；With extremely strong
Anti-interference ability；Suitable for materials such as solid, liquid；With extremely strong anti-bridging ability；The level-sensing device can also answer simultaneously
With the judgement and presentation of interface when being constituted with a variety of different materials；Point material position information, the two-dimensional cross section of material can be presented
Shape, three-dimensional image, maintenance is small, and situ configuration is convenient, no mechanical movement part long lifespan.
Description of the drawings
Fig. 1 is the structural schematic diagram of electromagnetism nodal point level-sensing device in embodiment 1；
Fig. 2 is schematic diagram when this electromagnetism nodal point level-sensing device is used to measure the mixing liquid material being layered；
Fig. 3 is the structural schematic diagram of electromagnetism nodal point level-sensing device in embodiment 2；
Fig. 4 is the structural schematic diagram of electromagnetism nodal point level-sensing device in embodiment 2；
Fig. 5 is the structural schematic diagram of electromagnetism nodal point level-sensing device in embodiment 3；
Fig. 6 is the structural schematic diagram of electromagnetism nodal point level-sensing device in embodiment 5.
Specific implementation mode
Present pre-ferred embodiments are described in detail below in conjunction with the accompanying drawings.
Embodiment 1：
Present embodiments provide for a kind of electromagnetism nodal point level-sensing devices, as shown in Figure 1, including five antennas 1, an electromagnetism
Wave receiving part 3, an electromagnetic radiation component 2, an arithmetic processing unit 4, a signal output component 5 and a display
Component 6 there are two the transmitting antenna 11 to be connected with electromagnetic radiation component 2, the other three is and electromagnetic wave in five antennas 1
The connected reception antenna 12 of receiving part 3, about 11 each transmitting antenna are sequentially fixed at the left side of 7 place container 9 of material to be measured
（Number consecutively is a and b from top to bottom）, and each transmitting antenna 11 is exposed to outside material 7 to be measured, about 12 each reception antenna
It is sequentially fixed at the right side of container 9（It is followed successively by a ', b ' and c ' from top to bottom）, and lowermost reception antenna c ' is buried in and waits for
It surveys in material 7, the reception antenna a ' of top two and b ' are exposed to outside material 7 to be measured, electromagnetic radiation component 2 and electromagnetic wave
Receiving part 3 is connect with arithmetic processor 4, and arithmetic processor 4 is connect with signal output component 5 and display unit 6.
Above-mentioned electromagnetic radiation component 2 and electromagnetic wave receiving part 3 there are one can making there is electromagnetic radiation to receive and dispatch work(
The component of energy serves as, and controls its transmitting by arithmetic processor 4 and/or receives electromagnetic wave；Above-mentioned arithmetic processor 4 can be one
Independent processor can also be to be made of multiple processors, can arbitrarily be selected according to its function；Above-mentioned each transmitting antenna 11
And/or each reception antenna 12 is directional aerial or omnidirectional antenna.
When present embodiment works, arithmetic processor 4 controls electromagnetic radiation component 2 and emits electromagnetic wave, and controllable hair
The intensity and power for the electromagnetic wave penetrated, and then transmitting antenna 11 can emit the electromagnetic wave with some strength and power, through hair
The electromagnetic wave for penetrating the transmitting of antenna 11 is received by the reception antenna 12 of 9 other side of container, at least be may be constructed six groups of transmittings-at this time and is connect
Receive channel（In figure shown in dotted line）, respectively a- a ', a-b ', a- c ', b- a ', b- b ' and b- c ', these transmitting receptions
The composition and send-receive sequence in channel are required to control by arithmetic processor 4 according to operation, and electromagnetic wave receiving part 3 can
The electromagnetic wave signal in above-mentioned each group send-receive channel is received, and multiple electromagnetic wave signals are sent to arithmetic processor 4,
Above-mentioned each electromagnetic wave signal is processed into the electromagnetic wave signal intensity dependency number in each send-receive channel by arithmetic processor 4 first
According to rear, then by specific mathematical model will and/or specific application program by each electromagnetic wave signal intensity-related data and
The location information of each transmitting antenna 11 and/or each reception antenna 12 in container carries out comprehensive calculation process into the object in container 9
Expect material position information, and the level of filler material information is transferred to signal output component 5 and display unit 6；Signal output component 5 will be upper
The output of level of filler material information signal is stated, display unit 6 is by above-mentioned level of filler material presentation of information to user.In order to enable measurement result
More accurate, in same material state, arithmetic processor can also pass through repeated multiple times control send-receive channel
Order and/or changed power, to obtain plurality of electromagnetic wave signal strength relevant information, then by this plurality of electromagnetic wave believe
After number intensity-related data carries out comprehensive calculation process, final accurate material position data are generated.
Specifically, above-mentioned arithmetic processor 4 is in the following manner by each electromagnetic wave signal intensity-related data and each
The location information of transmitting antenna 11 and/or each reception antenna 12 in container 9 carries out comprehensive calculation process into the material in container 9
Material position information：
Moment as shown in fig. 1, reception antenna c ' are buried by material 7 to be measured, due to material absorption and air and material
The reflection of boundary edges enhancing causes the electromagnetic wave for being exposed to outer transmitting antenna a and b transmitting that reception antenna c ' is received strong
Degree is much smaller than the electromagnetic intensity for being exposed to transmitting antenna a and the b transmitting that outer reception antenna a ' and b ' are received, at this time operation
Processor 4 is then using the position of residing 9 madial walls of container of reception antenna c ' as the material position numerical value of material 7 to be measured；
Alternatively, if at a time transmitting antenna b is buried, it is exposed to the hair that outer reception antenna a ' and b ' are received
Electromagnetic intensity of the electromagnetic intensity much smaller than reception antenna a ' and b ' the transmitting antenna a transmittings received of antenna b transmittings is penetrated,
Arithmetic processor 4 is then using the position of 9 madial wall of container residing for transmitting antenna b as the material position numerical value of material 7 to be measured at this time；
Alternatively, if at a time reception antenna c ' is buried, the electromagnetic intensity that reception antenna c ' is received is far small
The electromagnetic intensity received before being buried, arithmetic processor 4 is then by the position of residing 9 madial walls of container of reception antenna c ' at this time
Set the material position numerical value as material 7 to be measured；
Alternatively, if at a time transmitting antenna b is buried, it is exposed to the hair that outer reception antenna a ' and b ' are received
The electromagnetic intensity for penetrating antenna b transmittings is buried the preceding electricity emitted much smaller than reception antenna a ' and b ' the transmitting antenna b received
Magnetic wave intensity, arithmetic processor 4 is then using the position of 9 madial wall of container residing for transmitting antenna b as the material position of material 7 to be measured at this time
Numerical value.
It is noted that present embodiment can not only obtain the accurate material position numerical value of material 7 to be measured, if in addition originally
Each transmitting antenna 11 and each reception antenna 12 in embodiment are respectively positioned in same vertical plane, and the vertical plane is as to be measured
The section of material 7 in vertical direction, and between the send-receive channel between each transmitting antenna 11 and each reception antenna 12 by
One is set up in the transmission of electromagnetic wave and is generally aligned in the same plane interior network, so arithmetic processor 4 can also be according to each hair
Penetrate-receiving channel in electromagnetic wave signal intensity-related data and each transmitting antenna 11 and each reception antenna 12 on container 9
Location information combines the pattern generation algorithm of the saturating instrument in similar hole of comparative maturity, by above-mentioned network processes at material 7 to be measured
Two-dimensional cross section, which can not only show the material position data of antenna contact position, can also show non-antenna contact portion
Material position data, and be shown in display unit 6, user directly can intuitively be got by above-mentioned two-dimensional cross section to be measured
Material position of the material 7 in container 9.
If each transmitting antenna 11 is not located at each reception antenna 12 in same vertical plane in present embodiment, but
In different planes, then due to electromagnetism between the send-receive channel between each transmitting antenna 11 and each reception antenna 12
As soon as the transmission of wave will set up a three-dimensional network, arithmetic processor 4 can be according to electromagnetic wave in each send-receive channel
The location information of signal strength related data and each transmitting antenna 11 and reception antenna 12 on container 9 is by the net of above-mentioned three-dimensional
The 3 dimensional drawing that network is processed into material 7 to be measured is shown in display unit, and user can directly pass through above-mentioned 3 dimensional drawing
Intuitively get material position of the material 7 to be measured in container 9.
In addition, the electromagnetism nodal point level-sensing device in present embodiment can not only measure solid material, liquid material, also
The material position of each layer of material in the mixed material of layering can be measured, because different materials is absorbed or reflected to electromagnetic wave signal
Ability it is different, can be distinguished and be measured according to the difference for the electromagnetic wave signal intensity-related data that arithmetic processor is handled
Material position information belong to the material position of which layer material on earth, as shown in Fig. 2, measuring principle is identical with aforementioned principles, herein
No longer elaborate.
Embodiment 2：
Present embodiment is roughly the same with embodiment 1, and the main distinction is：As shown in Figure 3 and Figure 4, present embodiment
Electromagnetism nodal point level-sensing device in include multiple electromagnetic radiation components 2 and multiple electromagnetic wave receiving parts 3, each electromagnetic wave hair
It penetrates component 2 and is all connected at least one transmitting antenna 11, each electromagnetic wave receiving part 3 is also connected at least one reception day
Line 12, each transmitting antenna 11 and each reception antenna 12 can be fixed on 9 madial wall of container, can also be fixed on outside container 9
In portion space, each electromagnetic radiation component 2 and each electromagnetic wave receiving part 3 are connected with arithmetic processor 4 and by operation
It manages the control of device 4 transmitting and receives electromagnetic wave.Fig. 3 and Fig. 4 is vertical container difference lies in the container 9 in Fig. 3, in Fig. 4
Container 9 is that horizontal pipeline describes device.In addition to this, the operation principle of present embodiment is identical with embodiment 1, herein
It repeats no more.
Embodiment 3：
Present embodiment is being further improved for embodiment 1, is mainly theed improvement is that, the electromagnetism in present embodiment
Also there are one switching parts 8 for tool in nodal point level-sensing device, as shown in figure 5, electromagnetic radiation component 2 and electromagnetic wave receiving part 3
It is connect with antenna 1 by the switching part 8, switching part is also connected with arithmetic processor 4, and arithmetic processor 4 passes through control
Switching part 8 is come to control each antenna 1 be to use as transmitting antenna 11 or used as reception antenna 12, that is to say, that each hair
Penetrating between antenna 11 and each reception antenna 12 mutually to switch, because transmitting antenna 11 and reception antenna 12 are substantially complete
Identical antenna, only role is different, if set at the very start which be transmitting antenna 11 which be to connect
Antenna 12 is received, sometimes 12 quantity of reception antenna is inadequate and transmitting antenna 11 cannots be used up, at this time in present embodiment
Switching part 8 is controlled by arithmetic processor 4 to convert each antenna 1, to make full use of resource.In addition to this, this implementation
Mode is identical with embodiment 1, and details are not described herein again.
Embodiment 4：
Present embodiment is being further improved for embodiment 1, is mainly theed improvement is that, in the present embodiment, fixed
At least one transmitting antenna is that the transmitter of electromagnetic wave verifies antenna in each transmitting antenna 11 of justice（Such as the transmitting antenna a in Fig. 1
Or b）, accordingly, define the receiver that at least one reception antenna 12 in each reception antenna 12 is electromagnetic wave and verify antenna（Such as
Reception antenna a ' in Fig. 1 or b '）；Because electromagnetic radiation component 2 and electromagnetic wave receiving part 3 sometimes will appear failure,
It would not emit again at this time or receive electromagnetic wave, the material position data measured at this time by level-sensing device are exactly the data of mistake, still
User is not aware that they have been broken, and it is inaccurate to may result in measurement in this way；In addition, since various factors is not in measuring environment
Disconnected variation, the dielectric property for measuring space also constantly change with environmental characteristics, may cause to measure inaccurate.Increase in present embodiment
After having added transmitter verification antenna and receiver verification antenna, electromagnetic radiation component 2 can be verified in time and electromagnetic wave receives
Whether component 3 works normally, and the true and false of measurement result is distinguished convenient for user；Meanwhile the data that can be obtained by verifying antenna,
Verification, which is provided, for whole system measurement corrects data；In addition to ensuring the accuracy of verification, preferably ensure above-mentioned transmitter school
Testing antenna and receiver verification antenna will not all be buried at any time by material 7 to be measured.In addition to this, present embodiment and reality
Apply that mode 1 is identical, and details are not described herein again.
Embodiment 5：
Present embodiment is being further improved for embodiment 1, is mainly theed improvement is that, in the present embodiment,
The position that material 7 to be measured can not contact burial in 7 place space of material to be measured is additionally provided at least one detection antenna 10, the inspection
Observation line 10 is used to detect the environmental parameter in 7 place space of material to be measured（Such as dielectric constant）, such as Fig. 6.
Since the environment in 7 place space of material to be measured is in the state for being likely to change at any time, such as Jie of environment
Electric constant will change with the variation of the dust granule in environment, each send-receive that electromagnetic wave receiving part 3 receives
Each electromagnetic wave signal in channel can also change with the variation of the dielectric constant of environment, and then cause at arithmetic processor 4
Managing obtained electromagnetic wave signal intensity-related data can also change with the variation of dielectric constant, if not considering dielectric constant
Influence, the level of filler material information that 4 operation of final arithmetic processor obtains may be inaccurate, so being arranged in present embodiment
Above-mentioned detection antenna 10 for the dielectric constant in measuring environment at any time, and using the dielectric constant that this is measured is described
Reference data is provided with the calculation process of processor, for example electromagnetic wave signal intensity-related data or mathematical model are repaiied
Just, to ensure to obtain more accurate level of filler material information.
In addition to this, present embodiment is identical with embodiment 1, and details are not described herein again.
Embodiment 6：
Present embodiment is roughly the same with embodiment 1, and the main distinction is：In embodiment 1, level of filler material information
Acquisition modes are：Electromagnetic wave receiving part 3 receives the electromagnetic wave signal in each group send-receive channel, and by plurality of electromagnetic wave
Signal is sent to arithmetic processor 4, and above-mentioned each electromagnetic wave signal is processed into each send-receive channel by arithmetic processor 4 first
Electromagnetic wave signal intensity-related data after, then by specific mathematical model and/or specific application program by each electromagnetic wave
Signal strength related data and each transmitting antenna 11 and/or reception antenna 12 are at the location information synthesis operation in container 9
Manage into the level of filler material information measured in space；And in the present embodiment, electromagnetic wave receiving part 3 receives each group and emits-connect
The electromagnetic wave signal in channel is received, and plurality of electromagnetic wave signal is sent to arithmetic processor 4, arithmetic processor 4 first will be upper
It states after each electromagnetic wave signal is processed into the electromagnetic wave signal intensity-related data in corresponding each send-receive channel respectively, then root
The strength information of each electromagnetic wave signal is analyzed respectively according to each electromagnetic wave signal intensity-related data, to judge each transmitting-
The starting material material position information of receiving channel position, obtains whether material 7 to be measured has reached each send-receive channel
Position and make the logic judgment of "Yes" or "No", and these simple logic judgments are generated to the level of filler material in containers 9
Information.
The algorithm of this method for obtaining level of filler material information and program are simple compared in embodiment 1 in present embodiment,
But the reliability of level measurement is poor to be not so good as embodiment 1, if be modified to environmental parameter using detection antenna 10,
The reliability of measurement can be improved to a certain extent.
In addition to this, present embodiment is identical with embodiment 1, and details are not described herein again.
The technical concepts and features of the above embodiment only to illustrate the invention, its object is to allow be familiar with technique
People cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent transformation or modification that Spirit Essence is done, should be covered by the protection scope of the present invention.
Claims (14)
1. a kind of electromagnetism nodal point level-sensing device, which is characterized in that including at least three antennas（1）, at least one electromagnetic radiation
Component（2）, at least one electromagnetic wave receiving part（3）, arithmetic processor（4）, signal output component（5）And display unit（6）；
Three antennas（1）In at least one be and the electromagnetic radiation component（2）Connected transmitting antenna（11）, remaining is
With the electromagnetic wave receiving part（3）Connected reception antenna（12）；The electromagnetic wave receiving part（3）, signal output
Component（5）And the display unit（6）With the arithmetic processor（4）Connection；The transmitting antenna（11）It is connect with described
Receive antenna（12）It is separately fixed at material to be measured（7）Place measures at the different location in space, and the transmitting antenna（11）
With the reception antenna（12）Constitute at least two groups send-receive channel；The electromagnetic wave receiving part（3）Receive each hair
Penetrate-receiving channel in electromagnetic wave signal and each electromagnetic wave signal is sent to the arithmetic processor（4）；The operation
Processor（4）Each electromagnetic wave signal is processed into the electromagnetic wave signal intensity-related data in each send-receive channel
Afterwards, by specific mathematical model and/or specific application program by each electromagnetic wave signal intensity-related data and institute
State transmitting antenna（11）And/or the reception antenna（12）Location information in the measurement space integrates calculation process into object
Expect material position information, and the level of filler material information is transferred to the signal output component（5）With the display unit（6）；Institute
State signal output component（5）The level of filler material information signal is exported, the display unit（6）By the level of filler material information
It is shown to user；The arithmetic processor（4）It requires to control the composition in all send-receive channels and own according to operation
The sequence of the send-receive channel emission-reception electromagnetic wave signal.
2. electromagnetism nodal point level-sensing device according to claim 1, which is characterized in that the electromagnetic radiation component（2）With
The arithmetic processor（4）It is connected.
3. electromagnetism nodal point level-sensing device according to claim 2, which is characterized in that the arithmetic processor（4）Pass through control
Make the electromagnetic radiation component（2）Each transmitting antenna of indirect control（11）Emit electromagnetic wave and emits the work(of electromagnetic wave
Rate and intensity, by controlling the electromagnetic wave receiving part（3）Each reception antenna of indirect control（12）Receive electromagnetic wave with
And receive the power and intensity of electromagnetic wave.
4. electromagnetism nodal point level-sensing device according to claim 3, which is characterized in that the arithmetic processor（4）According to survey
Amount requires to control each transmitting antenna（11）Emit electromagnetic wave, each reception antenna of control（12）Electromagnetic wave is received, in turn
Control the composition and/or sequence in the send-receive channel.
5. the electromagnetism nodal point level-sensing device according to any one of claim 1 ~ 4, which is characterized in that the electromagnetic radiation
Component（2）With the electromagnetic wave receiving part（3）It is served as by the component with electromagnetic wave transmission-receiving function, the arithmetic processor
（4）Control the component transmitting or reception electromagnetic wave with electromagnetic wave transmission-receiving function.
6. the electromagnetism nodal point level-sensing device according to any one of claim 1 ~ 4, which is characterized in that also include switching part
（8）, the electromagnetic radiation component（2）With the electromagnetic wave receiving part（3）Pass through the switching part（8）With each day
Line（1）It is connected, the switching part（8）With the arithmetic processor（4）It is connected；The arithmetic processor（4）It is cut by described
Change component（8）Control each transmitting antenna（11）With each reception antenna（12）Between mutually switch.
7. the electromagnetism nodal point level-sensing device according to any one of claim 1 ~ 4, which is characterized in that also include and the electricity
Magnetic wave emission element（2）Be connected for verify its working condition transmitter verify antenna, and with the electromagnetic wave receiving part
Part（3）It is connected and verifies antenna for verifying the receiver of its working condition.
8. the electromagnetism nodal point level-sensing device according to any one of claim 1 ~ 4, which is characterized in that further include at least one
Detect antenna（10）, the detection antenna（10）It is set to the material to be measured in the measurement space（7）It can not touch
Position, for detecting the environmental parameter in the measurement space, with for the arithmetic processor（4）Calculation process provide reference
Data.
9. the electromagnetism nodal point level-sensing device according to any one of claim 1 ~ 4, which is characterized in that the arithmetic processor
（4）For an independent processor or the arithmetic processor（4）It is made of multiple processors.
10. the electromagnetism nodal point level-sensing device according to any one of claim 1 ~ 4, which is characterized in that the level of filler material
Information includes material position numerical value, the two-dimensional cross section of material and the 3 dimensional drawing of material of material.
11. the electromagnetism nodal point level-sensing device according to any one of claim 1-4, which is characterized in that the transmitting antenna
And/or the reception antenna is directional aerial or omnidirectional antenna.
12. the electromagnetism nodal point level-sensing device according to any one of claim 1 ~ 4, which is characterized in that the material to be measured
For solid material, liquid material or the mixed material of layering.
13. according to the level-sensing device of electromagnetism nodal point described in claim 12, which is characterized in that the electromagnetism nodal point level-sensing device can
Measure the material position of every layer of material in the mixed material of the layering.
14. a kind of electromagnetism nodal point level-sensing device, which is characterized in that including at least three antennas（1）, at least one electromagnetic radiation
Component（2）, at least one electromagnetic wave receiving part（3）, arithmetic processor（4）, signal output component（5）And display unit（6）；
Three antennas（1）In at least one be and the electromagnetic radiation component（2）Connected transmitting antenna（11）, remaining is
With the electromagnetic wave receiving part（3）Connected reception antenna（12）；The electromagnetic wave receiving part（3）, signal output
Component（5）And the display unit（6）With the arithmetic processor（4）Connection；The transmitting antenna（11）It is connect with described
Receive antenna（12）It is separately fixed at material to be measured（7）Place measures at the different location in space, and the transmitting antenna（11）
With the reception antenna（12）Constitute at least two groups send-receive channel；The electromagnetic wave receiving part（3）Receive each hair
Penetrate-receiving channel in electromagnetic wave signal and each electromagnetic wave signal is sent to the arithmetic processor（4）；The operation
Processor（4）Each electromagnetic wave signal is processed into the electromagnetic wave signal intensity dependency number in the send-receive channel respectively
According to rear, the strength information of each electromagnetic wave signal is divided respectively according to each electromagnetic wave signal intensity-related data
Analysis, judges the starting material material position information of each send-receive channel position, finally to all starting materials
The judging result of material position information generates the level of filler material information measured in space after carrying out unified logic judgment；The fortune
Calculate processor（4）The level of filler material information is transferred to the signal output component（5）With the display unit（6）；It is described
Signal output component（5）The level of filler material information signal is exported, the display unit（6）The level of filler material information is shown
Show to user；The arithmetic processor（4）It is required to control the composition in all send-receive channels and all institutes according to operation
State the sequence of send-receive channel emission-reception electromagnetic wave signal.
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| CN105403286B true CN105403286B (en) | 2018-09-14 |
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| CN105928474B (en) * | 2016-04-19 | 2018-09-28 | 中国科学院遥感与数字地球研究所 | Grain face position sensing equipment and detection method in silo |
| DE102016120727A1 (en) * | 2016-10-31 | 2018-05-03 | Krohne Messtechnik Gmbh | Level switch assembly and method for determining the level of a medium |
| CN107907185B (en) * | 2017-12-25 | 2024-04-05 | 上海昂丰装备科技有限公司 | Material level detection system in incineration hopper and application method thereof |
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