CN207096127U - Multiple spectra microwave moisture instrument - Google Patents
Multiple spectra microwave moisture instrument Download PDFInfo
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- CN207096127U CN207096127U CN201720650146.XU CN201720650146U CN207096127U CN 207096127 U CN207096127 U CN 207096127U CN 201720650146 U CN201720650146 U CN 201720650146U CN 207096127 U CN207096127 U CN 207096127U
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Abstract
A kind of multiple spectra microwave moisture instrument, including transmitting antenna, reception antenna, assessment instrument and material selecting switch are the utility model is related to, instrument is assessed and is connected with transmitting antenna and reception antenna；Assessing instrument includes signal input port, assess instrument and material variety selection signal is received by signal input port, and determine microwave signal corresponding with material variety selection signal and export, transmitting antenna receives microwave signal and is concurrently incident upon tested material, assess instrument and microwave signal is received transmitted through the echo-signal formed after tested material by reception antenna, and echo-signal is transmitted to assessing instrument；Assess instrument and the water content detection result of tested material is obtained according to material variety selection signal, echo-signal.Can be prestored in multiple spectra microwave moisture instrument of the present utility model from a variety of different materials corresponding to different calibrating patterns information, so as to realize the measurement for carrying out moisture to variety classes material using multiple spectra microwave moisture instrument, variation and the practicality of multiple spectra microwave moisture instrument are improved.
Description
Technical field
It the utility model is related to a kind of multiple spectra microwave moisture instrument applied to moisture content of material measurement.
Background technology
Microwave measurement for moisture content technology it is more and more common be applied to industry-by-industry, the e measurement technology be mainly used to monitoring production
During material moisture, so as to enterprise improve product quality, effectively control production process, it is cost-effective, improve production
Efficiency and productivity effect.
Usual microwave measurement for moisture content instrument includes a pair of antennas and assesses instrument, and its measuring principle is as follows：Transmitting antenna it is micro-
Ripple penetrates tested material, reaches reception antenna, and reception antenna receives microwave, then feeds back to assessment instrument.When microwave penetration thing
During material, because the hydrone in material is polar molecule, microwave can be absorbed, the vibration of key pin is produced, is heat energy by electromagnetic energy,
Therefore the difference of microwave phase and the decay of amplitude are generated, the content of moisture in material can be calculated by the two amounts.
However, traditional multiple spectra microwave moisture instrument can only be realized and the moisture of same material is measured, have
Certain limitation, more formulas, the measurement of multiple types material can not be realized.
Utility model content
Based on this, it is necessary to it is micro- to provide a kind of multiple spectra that can be measured to the moisture content value of a variety of different materials
Ripple Moisture Meter.
A kind of multiple spectra microwave moisture instrument, for being measured to the moisture in tested material, including transmitting antenna,
Reception antenna, instrument and material selecting switch are assessed, the assessment instrument is connected with the transmitting antenna and the reception antenna；Institute
The signal input port that instrument includes being connected with material selecting switch is estimated in commentary, and the assessment instrument is connect by the signal input port
Material variety selection signal is received, and according to the material variety selection signal and the material variety to prestore and the mapping of microwave signal
Relation determines microwave signal corresponding with the material variety selection signal and exported that the transmitting antenna receives the microwave letter
Number concurrently it is incident upon the tested material, the reception antenna receives the microwave signal transmitted through being formed after the tested material
Echo-signal, and the echo-signal is transmitted to the assessment instrument；It is described assessment instrument according to the material variety selection signal,
The echo-signal obtains the water content detection result of the tested material.
In one of the embodiments, the high frequency plate for assessing instrument and including mainboard and being connected with the mainboard, the height
Frequency plate is connected with the transmitting antenna and the reception antenna, and the mainboard receives the material by the signal input port
Species selection signal, and the material variety selection signal is sent to the high frequency plate；The high frequency plate is according to the material
The microwave signal corresponding to the generation of species selection signal is simultaneously launched to the tested material by the transmitting antenna.
In one of the embodiments, the mainboard also includes the microprocessor being connected with the signal input port, with
And the memory of the calibrating patterns information of at least two material varieties, the calibrating die are connected, are stored with the microprocessor
Type information is corresponding with the material variety selection signal, and the microprocessor is connected with the high frequency plate.
In one of the embodiments, the mainboard also includes the current output module being connected with the microprocessor, institute
Microprocessor is stated according to the water content detection result of tested material output control corresponding with the species of the tested material to be believed
Number, the current output module receives the control signal and exports current value corresponding with the species of the tested material.
In one of the embodiments, the assessment instrument includes body, and through hole, the material choosing are offered on the body
The one end for selecting switch is electrically connected through the through hole with the signal input port, and the periphery of the through hole is located on the body
It is labeled with least two material varieties mark.
In one of the embodiments, the assessment instrument also includes connecting with the signal input port, the microprocessor
The touch display screen connect.
In one of the embodiments, the assessment instrument includes power supply module, the power supply module and the microprocessor
Connection.
In one of the embodiments, the instrument of assessing includes what is be connected with the microprocessor, with peripheral device communication
Communication interface.
In one of the embodiments, the multiple spectra microwave moisture instrument includes frame and is arranged in the frame to be used for
The conveyer belt of material is transmitted, the conveyer belt is made up of nonmetallic materials, and the transmitting antenna is arranged at the upper of the conveyer belt
Side, the reception antenna are arranged at the lower section of the conveyer belt.
In one of the embodiments, the transmitting antenna is symmetrical with the reception antenna and central coaxial is set.
In multiple spectra microwave moisture instrument of the present utility model, by being prestored and a variety of different materials pair in assessment instrument
The mapping relations for the different school microwave signals answered, current material variety is selected by material selecting switch, assess instrument selected by
Microwave signal corresponding to the material generation selected simultaneously is launched, and variety classes material is entered using multiple spectra microwave moisture instrument so as to realize
The measurement of row moisture, therefore be advantageous to multiple spectra microwave moisture instrument and carry out multiple formulations, the in-site measurement of more material varieties,
Improve the variation of multiple spectra microwave moisture instrument and practicality.
Brief description of the drawings
Fig. 1 is the structural representation of multiple spectra microwave moisture instrument in the preferred embodiment of the utility model；
Fig. 2 is the module diagram of multiple spectra microwave moisture instrument shown in Fig. 1.
Embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
State.Preferred embodiment of the present utility model is given in accompanying drawing.But the utility model can come in many different forms
Realize, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is made to of the present utility model
The understanding of disclosure more thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to technology of the present utility model
The implication that the technical staff in domain is generally understood that is identical.It is simply in term used in the description of the present utility model herein
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " include
The arbitrary and all combination of one or more related Listed Items.
As depicted in figs. 1 and 2, the multiple spectra microwave moisture instrument 100 of the preferred embodiment of the utility model, for by micro-
Ripple measures to the moisture in tested material 200.Multiple spectra microwave moisture instrument 100 includes transmitting antenna 10, receives day
Line 30, assess instrument 50 and material selecting switch 55.Assess instrument 50 be connected with transmitting antenna 10 and reception antenna 30, and including with
The signal input port 514 that material selecting switch 55 connects.Assess instrument 50 and material variety is received by signal input port 514
Selection signal, and according to material variety selection signal and the determination of the mapping relations of the material variety to prestore and microwave signal and material
Microwave signal corresponding to species selection signal simultaneously exports.Transmitting antenna 10 receives microwave signal and is concurrently incident upon tested material 200, connects
Receive antenna 30 and receive microwave signal transmitted through the echo-signal formed after tested material 200, and echo-signal is transmitted to assessment
Instrument 50.Assess instrument 50 and the water content detection result of tested material 200 is obtained according to material variety selection signal, echo-signal.
Wherein, assessing instrument 50 includes mainboard 51 and the high frequency plate 53 being connected with mainboard 51, and it is defeated to be provided with signal on mainboard 51
Inbound port 514, and mainboard 51 receives material variety selection signal by signal input port 514, and the material variety is selected
Signal is sent to high frequency plate 53.High frequency plate 53 is connected with transmitting antenna 10 and reception antenna 30, and high frequency plate 53 is according to material kind
Microwave signal (generates multi beam in corresponding spectral range according to above-mentioned material variety selection signal corresponding to the generation of class selection signal
The different microwave signal of frequency), and launched by transmitting antenna 10 to tested material 200.The different microwave signal of multi beam frequency
After strafing tested material 200, high frequency plate 53 receives microwave signal transmitted through being formed after tested material 200 by reception antenna 30
Echo-signal, and the echo-signal is transmitted to mainboard 51.Mainboard 51 is believed according to above-mentioned material variety selection signal and echo
Number obtain the water content detection result of tested material 200.
In above-mentioned multiple spectra microwave moisture instrument 100, tested material 200 can be selectively input by material selecting switch 55
Species, assess instrument 50 according to selected material variety selection signal generation with 200 corresponding spectral range of tested material
The different microwave signal of multi beam frequency, and echo-signal that can be according to the tested material 200 of its reception and selected material kind
Class selection signal, obtain the accurate moisture of tested material 200.That is, multiple spectra microwave moisture of the present utility model
In instrument 100 measurement when can the material variety according to corresponding to producing current tested material 200 select signal and according to the echo of reception
Signal calculates the moisture content value of current material jointly, so as to realize using multiple spectra microwave moisture instrument 100 to it is selected not
With the measurement of moisture corresponding to the progress of species material.
Specifically, multiple spectra microwave moisture instrument 100 includes frame (not shown) and is arranged in frame to be used for material 200
The conveyer belt 90 transmitted.Wherein, transmitting antenna 10 is arranged at the top of conveyer belt 90, and reception antenna 30 is arranged at transmission
Set with 90 lower section, and with the face of transmitting antenna 10 and central coaxial, to ensure microwave signal in transmission and receive process
Accuracy.Preferably, conveyer belt 90 is made up of nonmetallic materials.
Mainboard 51 includes the microprocessor 510 being connected with signal input port 514 and is connected, stores with microprocessor 510
Have a memory 512 of the calibrating patterns information of at least two material varieties, microprocessor 510 according to material variety selection signal by
Calibrating patterns information corresponding with the material variety selection signal is transferred in memory 512, and according to echo-signal and the calibration
Model information obtains the water content detection result of tested material 200.
Wherein, microwave measurement moisture mainly utilizes the dielectric property of moisture, and dielectric constant can be expressed as：
ε r=ε ' r-j (ε " r+o'/ω ε0)
ε in formula " r are dielectric loss, o'/ω ε0For conduction loss, ω and microwave frequency are proportional.
When in low frequency, conduction loss is occupied an leading position, the relation between microwave attenuation and water content and unobvious；And
During in high frequency, dielectric loss is dominant, into obvious linear relationship between microwave attenuation and water content.That is, in order to
Measurement when ensure tested material water content accuracy, it is necessary to choose with the suitable frequency range of tested material (i.e. microwave attenuation and
Into the frequency range of obvious linear relationship between water content) measure.Such as coal, the mineral matter in coal are easily formed in water
Ionic conduction, conduction loss is produced, it is conductive when Coal ' moisture is less than 10%, when Microwave emission frequency is between 1GHz to 3GHz
Loss has obvious influence so that relation and unobvious between microwave attenuation and water content；And when microwave frequency is higher than 3GHz
After (i.e. relative high frequency), dielectric loss is dominant, microwave attenuation and water content into obvious linear relationship, i.e., in microwave frequency height
In the suitable frequency range that 3GHz frequency range is water content in measurement coal.
Meanwhile in initial calibration, the suitable frequency range of current tested material 200 is selected, and by high frequency plate 53 selected
The microwave signal of multi beam different frequency is produced in fixed frequency range, microwave signal is received after passing through tested material 200 by reception antenna
Collection, then feed back to microprocessor 510 after the pretreatment of high frequency plate 53.Microprocessor 510 is by the damping vibration attenuation of every frequency
Enter row vector summation with phase difference, include the data group of more different frequencies to form one, and pass through langbobier law
Formula, establish different material water content and microwave signal transmitted through after the material by the mapping relations between absorption microwave amount.Its
In, the foundation of mapping relations can obtain and be stored in memory 514 by testing.
Therefore, it is micro- with being absorbed to include suitable frequency section corresponding with tested material and water content for above-mentioned calibrating patterns information
Mapping relations between ripple amount.For example, 8 kinds of different material master pattern letters can be prestored in memory 512 as needed
Breath, when user is carrying out moisture measurement, the material variety that microprocessor 510 receives according to signal input interface 514 selects
Select signal control high frequency plate 53 and select band limits corresponding with the material variety selection signal, and generated in the band limits
Multi beam frequency it is different microwave signal output, echo-signal and processing of the microprocessor 510 according to reception, with according to water content with
The water content detection result of tested material 200 is obtained by the mapping relations between absorption microwave amount.
In one of the embodiments, instrument 50 is assessed to open including body (not shown) and the material being arranged on body selection
Close 55.Material selecting switch 55 electrically connects with signal input port 514, and can be operated and produced and tested material 200 according to user
Corresponding trigger signal, microprocessor 510 transfer calibrating patterns information corresponding with tested material 200 according to trigger signal.
In measurement process, user according to the material 200 being positioned on conveyer belt 90, can by rotary/push-button material selecting switch 55 to
Matched position, to produce the trigger signal matched with current material 200.Wherein, material selecting switch 55 in diverse location with
The matching of tested material 200 can be identified by producing different trigger signals by microprocessor 510, with by being adjusted in memory 512
Take corresponding calibration value.
Specifically, through hole (not shown) is offered on body, one end of material selecting switch 55 is defeated through through hole and signal
Inbound port 514 electrically connects, and the periphery on body positioned at through hole is labeled with least two material model identifications, to indicate that material selects
The current selection of switch 55.
It is to be appreciated that in some other embodiment, material selecting switch 55 can be arranged at it is defeated with signal on body
Rotary switch that inbound port 514 connects or by compressing switch, different trigger signals is produced by micro- place by rotation or pressing operation
Reason device 50 identifies.
Wherein, the touch display screen 516 that instrument 50 includes being connected with microprocessor 510 is assessed, for showing various related letters
Breath, such as water content detection end value etc., are not repeated one by one herein.
In addition, in wherein another embodiment, shown on the display interface of touch display screen 516 two kinds or two kinds with
Upper material model identification, is operated for selection by the user.Microprocessor 510 is used to be transferred and current thing according to the touch operation of user
Expect demarcation signal corresponding to species.Wherein, the selection of material variety can pass through 516 liang of material selecting switch 55 and touch display screen
Kind selectively mode, or only set one of which selected also can, be not limited thereto.
Further, assessing instrument 50 also includes power supply module 518, and power supply module 518 is connected with microprocessor 510, is used for
Power supply is provided.
Further, assessing instrument 50 also includes the communication interface 520 that is connected with microprocessor 510, is used for and external equipment
Carry out communication connection.Wherein, external equipment can be the electronic equipments such as mobile phone, flat board so that user can be realized by external equipment
To the remote control of multiple spectra microwave moisture instrument 100.
Yet further, mainboard 51 also includes the current output module 522 being connected with microprocessor 510, microprocessor 510
Control signal corresponding with the species of tested material 200, electric current output mould are exported according to the water content detection result of tested material 200
Block 522 receives control signal and simultaneously exports corresponding with the species of tested material 200 current value, for upstream device (such as moisture
Drying plant) identify and utilize.
Can be prestored in multiple spectra microwave moisture instrument 100 of the present utility model from a variety of different materials corresponding to different schools
Quasi- model information so that in measurement can according to corresponding to selecting the species of current tested material band limits and water content with it is micro-
Ripple signal transmitted through after the material by the mapping relations between absorption microwave amount, so as to realize using multiple spectra microwave moisture instrument
100 pairs of variety classes materials carry out the measurement of moisture, therefore are advantageous to multiple spectra microwave moisture instrument 100 and carry out a variety of match somebody with somebody
Side, the in-site measurement of more material varieties, improve variation and the practicality of multiple spectra microwave moisture instrument 100.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that the common skill for this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
- A kind of 1. multiple spectra microwave moisture instrument, for being measured to the moisture in tested material, it is characterised in that including Transmitting antenna, reception antenna, assess instrument and material selecting switch, the assessment instrument and the transmitting antenna and the reception day Line connects；The signal input port assessed instrument and include being connected with material selecting switch, the assessment instrument pass through the signal Input port receives material variety selection signal, and according to the material variety selection signal and the material variety and microwave that prestore The mapping relations of signal determine microwave signal corresponding with the material variety selection signal and exported that the transmitting antenna receives The microwave signal is concurrently incident upon the tested material, and the reception antenna receives the microwave signal transmitted through the measured object The echo-signal formed after material, and the echo-signal is transmitted to the assessment instrument；The assessment instrument is according to the material kind Class selection signal, the echo-signal obtain the water content detection result of the tested material.
- 2. multiple spectra microwave moisture instrument according to claim 1, it is characterised in that it is described assessment instrument include mainboard and with institute The high frequency plate of mainboard connection is stated, the high frequency plate is connected with the transmitting antenna and the reception antenna, and the mainboard passes through institute State signal input port and receive the material variety selection signal, and the material variety selection signal is sent to the high frequency Plate；The high frequency plate microwave signal and passes through the transmitting antenna according to corresponding to generating the material variety selection signal Launch to the tested material.
- 3. multiple spectra microwave moisture instrument according to claim 2, it is characterised in that the mainboard also includes and the signal The microprocessor of input port connection, and it is connected with the microprocessor, is stored with the calibrating die of at least two material varieties The memory of type information, the calibrating patterns information is corresponding with the material variety selection signal, the microprocessor with it is described High frequency plate connects.
- 4. multiple spectra microwave moisture instrument according to claim 3, it is characterised in that the mainboard also includes and micro- place The current output module of device connection is managed, the microprocessor is according to the output of the water content detection result of the tested material and the quilt Control signal corresponding to the species of material is surveyed, the current output module receives the control signal and exported and the measured object Current value corresponding to the species of material.
- 5. multiple spectra microwave moisture instrument according to claim 1, it is characterised in that the assessment instrument includes body, described Through hole is offered on body, one end of the material selecting switch electrically connects through the through hole with the signal input port, On the body at least two material varieties mark is labeled with positioned at the periphery of the through hole.
- 6. multiple spectra microwave moisture instrument according to claim 3, it is characterised in that the assessment instrument also includes and the letter Number input port, the touch display screen of microprocessor connection.
- 7. multiple spectra microwave moisture instrument according to claim 3, it is characterised in that the assessment instrument includes power supply module, The power supply module is connected with the microprocessor.
- 8. multiple spectra microwave moisture instrument according to claim 3, it is characterised in that the assessment instrument includes and micro- place Reason device, the communication interface being connected with peripheral device communication.
- 9. multiple spectra microwave moisture instrument according to claim 1, it is characterised in that the multiple spectra microwave moisture instrument includes Frame and it is arranged in the frame and is used to transmit the conveyer belt of the tested material, the conveyer belt is nonmetallic materials system Into the transmitting antenna is arranged at the side of the conveyer belt, and the reception antenna is arranged at the opposite side of the conveyer belt.
- 10. multiple spectra microwave moisture instrument according to claim 9, it is characterised in that the transmitting antenna and the reception Antenna symmetry and central coaxial setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720650146.XU CN207096127U (en) | 2017-06-06 | 2017-06-06 | Multiple spectra microwave moisture instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720650146.XU CN207096127U (en) | 2017-06-06 | 2017-06-06 | Multiple spectra microwave moisture instrument |
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| Publication Number | Publication Date |
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| CN207096127U true CN207096127U (en) | 2018-03-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107102011A (en) * | 2017-06-06 | 2017-08-29 | 默斯测控技术（长沙）有限公司 | Multiple spectra microwave moisture instrument |
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2017
- 2017-06-06 CN CN201720650146.XU patent/CN207096127U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107102011A (en) * | 2017-06-06 | 2017-08-29 | 默斯测控技术（长沙）有限公司 | Multiple spectra microwave moisture instrument |
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