CN108844969A - A kind of coal on mine conveyer belt purity determination system - Google Patents
A kind of coal on mine conveyer belt purity determination system Download PDFInfo
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- CN108844969A CN108844969A CN201810546252.2A CN201810546252A CN108844969A CN 108844969 A CN108844969 A CN 108844969A CN 201810546252 A CN201810546252 A CN 201810546252A CN 108844969 A CN108844969 A CN 108844969A
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
Abstract
The present invention provides a kind of coal on mine conveyer belt purity determination systems, including：Microwave emission unit, the L microwave M for the coal seam that time division emission is used to transmit on mine conveyer belt；Microwave receiving unit respectively passes through corresponding microwave N behind the coal seam transmitted on mine conveyer belt for receiving above-mentioned L microwave M；Filter unit, for being filtered to each microwave N that microwave receiving unit receives；Data storage cell, the data for this system store；Control unit, for based on the corresponding information stored in the processed each microwave N of filtering unit filters and the data storage cell, calculate separately the coal seam transmitted on the corresponding mine conveyer belt of above-mentioned L microwave N to divide coal purity y；It is also used to calculate the above-mentioned L average values for dividing coal purity y, which is the coal purity Y in the coal seam transmitted on above-mentioned mine conveyer belt.The present invention is used for the coal purity detecting of coal on mine conveyer belt.
Description
Technical field
The present invention relates to coal mine field, specifically a kind of coal on mine conveyer belt purity determination system, for detecting coal mine
The coal purity in the coal seam conveyed on mine conveyer belt.
Background technique
There is the X ray coal purity detecting method based on particle group optimizing cluster at present for the purity detecting of coal, it is right
In this method, its is with high costs, and security risk is larger, and also needs national regulatory body for the use of radioactive material
Complicated Flow.
Based on this, Authorization Notice No. is that the patent document of CN201837595U discloses one kind for coal on mine conveyer belt
The microwave detection equipment of moisture content detection, which more can not only rapidly and accurately detect the moisture content that produces coal, and detect knot
The fruit not detection vulnerable to the influence of external environment, suitable for coal contained humidity on conveyer belt at down-hole transfer point.
But practice have shown that contain gangue in the coal conveyed on mine conveyer belt sometimes, and by above-mentioned existing equipment without
Method directly gives the coal purity of the coal currently conveyed on mine conveyer belt, this is not easy to the use of user to a certain extent.
In addition, in actual use, needing to meet close alignment between Microwave emission unit and microwave receiving unit
It is required that otherwise influencing final detection accuracy.And the above-mentioned microwave detection equipment for moisture contained in coal on mine conveyer belt detection,
It does not disclose that the position adjusting mechanism of its Microwave emission unit and microwave receiving unit, Microwave emission unit and microwave receiving
Unit is not easy to adjustment alignment, this increases the difficulty of adjustment alignment to a certain extent, is also increasing microwave to a certain degree
The risk that transmitting unit and microwave receiving unit are misaligned.
In addition, the above-mentioned prior art does not have the function of remote alarms yet, it is not easy to the development remotely monitored.
This is in place of the deficiencies in the prior art.
Summary of the invention
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of coal on mine conveyer belt
Purity determination system, the purity detecting of the coal conveyed on coal mine conveyer belt.
In order to solve the above technical problems, the present invention provides a kind of coal on mine conveyer belt purity determination systems, including：
Microwave emission unit, for the L microwave M in the coal seam that time division emission is used to transmit on coal mine conveyer belt, the L
The frequency of a microwave M is different；
Microwave receiving unit, it is right for receiving institute after above-mentioned L microwave M respectively passes through the coal seam transmitted on coal mine conveyer belt
The microwave N answered；
Filter unit is connected with the microwave receiving unit, for filtering to each microwave N that microwave receiving unit receives
Wave processing；
Data storage cell, the data for this system store, and the interior data stored include pre-stored above-mentioned L microwave
The respective power P 1 of M and phase；
Control unit is connected with the filter unit and data storage cell respectively, for being handled based on filtering unit filters
The respective power P 1 of pre-stored above-mentioned L microwave M and phase in each microwave N crossed and the data storage cell, point
Do not calculate the coal seam transmitted on the above-mentioned corresponding coal mine conveyer belt of L microwave N divides coal purity y；It is also used to calculate
Above-mentioned L are divided the average value of coal purity y, which is the coal purity Y in the coal seam transmitted on above-mentioned coal mine conveyer belt；
Touch screen display unit is connected with the control unit, is used for real-time display control unit currently calculated coal purity
Y is also used to modify or set the parameter of this measuring system.
Wherein, the frequency of L=3,3 microwave Ms is respectively：8GHZ, 9.4GHZ and 10GHZ.
Wherein, which further includes data uploading unit, the data uploading unit with
The control unit is connected, in real time to the current calculated coal purity Y of host computer transmission control unit.
Wherein, the data uploading unit uses RS485 communication module.
Wherein, the host computer is connected with an alarm, and the coal purity Y for receiving in the host computer is less than preparatory
Alarm signal is issued when the coal purity of setting；The alarm includes transparent shell, and setting is intracorporal perpendicular in hyaline test
Bar, the fan dried straight up and the annular color ball being set on the vertical bar can be slided up and down to, the vertical bar
Top is fixed on the top of transparent shell, and the bottom of the vertical bar is equipped with for preventing annular color ball from skidding off the limiting block of vertical bar
Bar, the fan are located at the underface of the vertical bar.
Wherein, control unit is based on pre- in the processed each microwave N of filtering unit filters and the data storage cell
The respective power P 1 of above-mentioned L microwave M and phase first stored, calculates separately the corresponding coal mine of above-mentioned L microwave N
The method for dividing coal purity y in the coal seam transmitted on conveyer belt is：
It is corresponding to receive and analog-to-digital conversion is carried out respectively to the processed each microwave N of above-mentioned filtering unit filters；
The corresponding power spectrum and phase spectrum for obtaining above-mentioned each microwave N after analog-to-digital conversion；
Based on the power spectrum of the above-mentioned each microwave N got, the corresponding power P 2 for calculating each microwave N；
Power based on corresponding microwave M corresponding to the above-mentioned power P 2 being calculated and pre-stored above-mentioned each microwave N
P1 calculates above-mentioned each corresponding microwave M and decays to its attenuation A for respectively corresponding to microwave N；
Corresponding microwave M corresponding to phase spectrum and pre-stored above-mentioned each microwave N based on the above-mentioned each microwave N got
Phase, calculate above-mentioned each corresponding respective phase shift Ψ of microwave M；
Based on the phase shift Ψ of the above-mentioned each microwave M being calculated, coal in the coal seam transmitted before coal mine conveyer belt is taken in is calculated
With the content ratio X of gangue, wherein X=К × [(423 × Ψ) -23]/(1.57+ Ψ), wherein К is adjusting parameter, the К's
Value range is 0.5~1.5；
It is based respectively on formula y=1-A-X and calculates transmission before the corresponding coal mine conveyer belt detected of above-mentioned L microwave M is taken in
Each point of coal purity y in coal seam, wherein A and X in formula are sequentially indicated and currently divided the corresponding corresponding microwave M of coal purity y in formula
The content ratio of corresponding above-mentioned calculated respective attenuation amount A and coal and gangue.
Wherein, the Microwave emission unit and microwave receiving unit are respectively equipped with a mounting base；
The mounting base includes the disposed in parallel first dynamic support plate and the second dynamic support plate, and the second dynamic support plate is located at first
The top of support plate is moved, is arranged with frame in the peripheral circumferential direction of the first dynamic support plate, it can relatively slidably in the first dynamic support plate
It wears there are two the first guide rod, two first guide rod parallelly distribute ons, the both ends of each first guide rod are separately mounted to described
On frame；
Frame is equipped with guide groove, and the length direction of guide groove is parallel with the axis direction of first guide rod；
Second dynamic support plate is equipped with the mounting hole for fixing Microwave emission unit or microwave receiving unit, the second dynamic support plate
On can slidably wear relatively there are two the second guide rod, the both ends of two second guide rod parallelly distribute ons, each second guide rod are equal
It is fixed on after bending downward in the first dynamic support plate；Each second guide rod is vertical with first guide rod respectively；
First dynamic support plate is equipped with the first transmission screw hole, which is equipped with the first drive screw, and described the
One drive screw is thread through the first transmission screw hole；First drive screw is rotationally pierced by frame and is fixed on the first tune
In locking nub；One end of neighbouring first adjusting block for the part of first drive screw being located in frame is equipped with the first fastening nut；
Second dynamic support plate is equipped with the second transmission screw hole, which is equipped for driving the second dynamic support plate to exist
The second drive screw moved on second guide rod；Second drive screw is thread through the second transmission screw hole, and second passes
Dynamic screw rod penetrates rotatably the guide groove and is fixed on the second adjusting block, and the second drive screw is matched with guide groove sliding
It closes；One end of neighbouring second adjusting block for the part of second drive screw being located in frame is equipped with the second fastening nut.
Wherein, the control unit uses MSP430FR5994 single-chip microcontroller.
Compared with the prior art, the advantages of the present invention are as follows：
（1）Coal on mine conveyer belt purity determination system of the present invention, control unit can be based on filtering unit filters
The respective power P 1 of pre-stored above-mentioned L microwave M and phase in processed each microwave N and the data storage cell
Position, calculate separately the coal seam transmitted on the above-mentioned corresponding coal mine conveyer belt of L microwave N divides coal purity y, Jin Ertong
It crosses and calculates the above-mentioned L coal purity Y for dividing the mean value calculation of coal purity y to go out the coal seam transmitted on coal mine mine conveyer belt, be convenient for
Relevant staff is directly acquainted with the coal purity in the coal seam transmitted on coal mine conveyer belt, more practical.
（2）Coal on mine conveyer belt purity determination system of the present invention, mounting base include disposed in parallel first
Dynamic support plate and the second dynamic support plate, the second dynamic support plate are equipped with for fixing Microwave emission unit or microwave receiving unit
Mounting hole, the first guide rod can be slidably equipped in the first dynamic support plate, can relatively slidably in the second dynamic support plate relatively
It is equipped with the second guide rod, wherein the first dynamic support plate is equipped with the first drive screw, the second dynamic support plate is equipped with the second biography
Dynamic screw rod can reach under the collaboration transmission effect of the first drive screw and the second drive screw in the second dynamic support plate
The position of the Microwave emission unit or microwave receiving unit installed is adjusted, and then is connect convenient for improving Microwave emission unit or microwave
The convenience of unit alignment is received, and then to a certain extent convenient for raising coal on mine conveyer belt purity determination of the present invention system
The convenience that system uses.
（3）Coal on mine conveyer belt purity determination system of the present invention, including alarm, are currently received in host computer
Coal purity Y be less than preset coal purity when, can by the alarm issue alarm signal, consequently facilitating monitoring end subscriber
More observably find the phenomenon that coal purity Y of the coal conveyed on conveyer belt is less than preset coal purity, consequently facilitating
It makes corresponding processing, more practical.
It can be seen that compared with prior art, the present invention implementing with substantive distinguishing features outstanding and significant progress
Beneficial effect be also obvious.
Detailed description of the invention
Fig. 1 is that the functional block diagram of the specific embodiment 1 of coal on mine conveyer belt purity determination system of the present invention shows
It is intended to.
Fig. 2 is the functional block diagram of the specific embodiment 2 and 3 of coal on mine conveyer belt purity determination system of the present invention
Schematic diagram.
Fig. 3 is mounting base described in the specific embodiment 3 of coal on mine conveyer belt purity determination system of the present invention
Structural schematic diagram.
Fig. 4 is the structural schematic diagram of alarm shown in Fig. 2.
Wherein：1, the first dynamic support plate, the 2, first guide rod, the 3, first drive screw, the 4, first adjusting block, 5, frame,
6, the first fastening nut, the 7, second dynamic support plate, the 8, second guide rod, the 9, second drive screw, 10, guide groove, 11, second
Adjusting block, the 12, second fastening nut, 13, mounting hole, 14, transparent shell, 15, electric fan, 16, limit bar, 17, vertical bar,
18, annular color ball.
Specific embodiment
To keep technical solution of the present invention and advantage clearer, below in conjunction with attached drawing, to technical solution of the present invention
It is clearly and completely described.
Specific embodiment 1：
Fig. 1 is a kind of specific embodiment of coal on mine conveyer belt purity determination system of the present invention.In present embodiment
In, which includes that Microwave emission unit, microwave receiving unit, filter unit, data are deposited
Storage unit, control unit and touch screen display unit further include data uploading unit and host computer.
The Microwave emission unit, 3 for the coal seam that time division emission is used to transmit on coal mine conveyer belt
The frequency of a microwave M, 3 microwave Ms is different and respectively 8GHZ, 9.4GHZ and 10GHZ.
The microwave receiving unit, 3 microwave Ms for receiving above-mentioned Microwave emission unit transmitting respectively pass through coal mine
Corresponding microwave N behind the coal seam transmitted on mine conveyer belt.Wherein, each microwave M passes through transmits on coal mine conveyer belt
Coal seam after a corresponding microwave N.
The filter unit is connected with the microwave receiving unit, each for receiving to microwave receiving unit
Microwave N is filtered.
The data storage cell, the data for this system store, and the interior data stored include pre-stored
The respective power P 1 of above-mentioned L microwave M and phase.
The control unit is connected with above-mentioned filter unit and data storage cell respectively, for being based on filter unit
The pre-stored above-mentioned respective power P 1 of L microwave M in each microwave N being filtered and the data storage cell
And phase, calculate separately the coal seam transmitted on the above-mentioned corresponding coal mine conveyer belt of L microwave N divides coal purity y；Also
For calculating the above-mentioned L average values for dividing coal purity y, which is the coal seam transmitted on above-mentioned coal mine conveyer belt
Coal purity Y.
The touch screen display unit, is connected with the control unit, currently calculates for real-time display control unit
Coal purity Y out, is also used to modify or set the parameter of this measuring system.
The data uploading unit, is connected with the control unit, in real time to host computer transmission control unit
Current calculated coal purity Y.Coal of the host computer for remotely monitoring the coal seam transmitted on coal mine conveyer belt is pure
Spend Y.
Control unit is based on depositing in advance in the processed each microwave N of filtering unit filters and the data storage cell
The respective power P 1 of above-mentioned L microwave M and phase of storage calculate separately the corresponding coal mine conveying of above-mentioned L microwave N
The method for dividing coal purity y for taking the coal seam of transmission is：
It is corresponding to receive and analog-to-digital conversion is carried out respectively to the processed each microwave N of above-mentioned filtering unit filters；
The corresponding power spectrum and phase spectrum for obtaining above-mentioned each microwave N after analog-to-digital conversion；
Based on the power spectrum of the above-mentioned each microwave N got, the corresponding power P 2 for calculating each microwave N；
Power based on corresponding microwave M corresponding to the above-mentioned power P 2 being calculated and pre-stored above-mentioned each microwave N
P1 calculates above-mentioned each corresponding microwave M and decays to its attenuation A for respectively corresponding to microwave N；
Corresponding microwave M corresponding to phase spectrum and pre-stored above-mentioned each microwave N based on the above-mentioned each microwave N got
Phase, calculate above-mentioned each corresponding respective phase shift Ψ of microwave M；
Based on the phase shift Ψ of the above-mentioned each microwave M being calculated, coal in the coal seam transmitted before coal mine conveyer belt is taken in is calculated
With the content ratio X of gangue, wherein X=К × [(423 × Ψ) -23]/(1.57+ Ψ), wherein К is adjusting parameter, the К's
Value range is 0.5~1.5；
It is based respectively on formula y=1-A-X and calculates transmission before the corresponding coal mine conveyer belt detected of above-mentioned L microwave M is taken in
Each point of coal purity y in coal seam, wherein A and X in formula are sequentially indicated and currently divided the corresponding corresponding microwave M of coal purity y in formula
The content ratio of corresponding above-mentioned calculated respective attenuation amount A and coal and gangue.
Specifically, with processed certain microwave N of above-mentioned filtering unit filters（Call " microwave N1 " in the following text）For, control unit base
In the power P 1 of corresponding microwave M corresponding to microwave N1 pre-stored in microwave N1 and the data storage cell
And phase, the method for dividing coal purity y in the coal seam transmitted on the corresponding coal mine conveyer belt of above-mentioned microwave N1 is calculated separately, is wrapped
Include following steps p1-p6：
Step p1, control unit receives and carries out analog-to-digital conversion to above-mentioned microwave N1, and it is micro- after analog-to-digital conversion to obtain this later
The power spectrum and phase spectrum of wave N1；
Step p2, power spectrum of the control unit based on the above-mentioned microwave N1 after analog-to-digital conversion got, calculates this through modulus
The power P 2 of microwave N1 after conversion；
Step p3, it power P 2 of the control unit based on the above-mentioned microwave N1 after analog-to-digital conversion being calculated and deposits in advance
The power P 1 of corresponding microwave M corresponding to the above-mentioned microwave N1 of storage calculates the corresponding microwave M decaying corresponding to above-mentioned microwave N1
To the attenuation A1 of microwave N1；
Step p4, phase spectrum of the control unit based on the above-mentioned microwave N1 through analog-to-digital conversion got and it is pre-stored on
The phase for stating corresponding microwave M corresponding to microwave N1 calculates the phase shift Ψ 1 of corresponding microwave M corresponding to above-mentioned microwave N1；
Step p5, phase shift Ψ 1 of the control unit based on corresponding microwave M corresponding to the above-mentioned above-mentioned microwave N1 being calculated, meter
The content of coal and gangue ratio X1 in the coal seam transmitted before coal mine conveyer belt is taken in is calculated, wherein X1=К × [(423 × Ψ
1) -23]/(1.57+ Ψ 1), wherein К is adjusting parameter, and the value range of the К is 0.5~1.5；
Step p6, above-mentioned calculated A1 and X1 is substituted into formula y1=1-A1-X1 by control unit, and then is calculated by above-mentioned
Coal purity is divided in the coal seam that the corresponding coal mine conveyer belt detected of corresponding microwave M corresponding to microwave N1 transmits before being taken in
y1。
To sum up, the present invention is in use, be first relatively mounted on mine for Microwave emission unit and microwave receiving cell position
The two sides of conveyer belt and the microwave for enabling Microwave emission unit to launch pass through the coal seam on conveyer belt and pass through on conveyer belt
The microwave in coal seam can be received by microwave receiving unit；The corresponding of above-mentioned adjusting parameter К is arranged by touch screen display unit later
Numerical value, powering on can be detected by coal purity of this system to the coal seam on mine conveyer belt.It should be noted that
This field user in actual use, needs first to be debugged accordingly according to the actual conditions of mine, finally determines above-mentioned adjustment
The final value of parameter К.Therefore when this field user judgement, pass through the adjusting parameter К's that touch screen display unit is arranged for the first time
When value is so that the detected value of this system is unreasonable, numerical value adjustment can be carried out by touch screen display unit.
Specifically, in use, by 3 microwave Ms of Microwave emission unit time division emission, which conveys across mine
It behind the coal seam taken, is respectively received by microwave receiving unit, free microwave receiving unit each later is sent to filter unit progress
Filtering processing, each microwave are sent to control unit after being filtered, and are combined by control unit shown by touch screen later
Pre-stored each corresponding power P1 and phase, calculating are produced coal in the adjusting parameter К value and data storage cell of unit input
The coal purity in the coal seam that mine mine conveyer belt transmits before being taken in.Above-mentioned calculated coal purity Y shown by touch screen display unit,
And long-range host computer is uploaded to by data uploading unit, so that relevant staff passes through host computer（PC machine）Observation in real time
The coal purity in the coal seam that coal mine conveyer belt transmits before being taken in.
It is further to note that in the present embodiment, the control unit uses MSP430FR5994 single-chip microcontroller,
The data uploading unit uses RS485 communication module.Wherein included up to 20 inputs of MSP430FR5994 single-chip microcontroller are logical
12 ADC in road, the microwave signal convenient for sending to filter unit carries out analog-to-digital conversion, mono- convenient for MSP430FR5994 later
The subsequent processing to signal of piece machine.
In addition, the content not elaborated in this specification is that those skilled in the art are easy to according to the prior art
The content of realization, for the structure for simplifying specification, details are not described herein.
Specific embodiment 2：
Fig. 2, Fig. 4 are another specific embodiment of coal on mine conveyer belt purity determination system of the present invention, and specific
Embodiment 1 is compared, the difference is that, coal on mine conveyer belt purity determination system described in present embodiment, host computer connects
There is an alarm.As shown in figure 4, the alarm, the coal purity Y for receiving in the host computer, which is less than, to be preset
Coal purity when issue alarm signal.The alarm includes transparent shell 14, and is arranged in transparent shell 14
Vertical bar 17, the fan dried straight up and the annular color ball 18 being set on the vertical bar 17, institute can be slided up and down to
The top for stating vertical bar 17 is fixed on the top of transparent shell 14, and the bottom of the vertical bar 17 is equipped with for preventing annular color ball 18
The limit bar 16 of vertical bar 17 is skidded off, the fan is located at the underface of the vertical bar 17.
In use, passing through host computer in the small preset coal purity in the inner of coal purity that host computer is currently received
It controls electric fan 15 to operate, annular color ball 18 is move upwardly until along vertical bar 17 under the blowing of electric fan 15 and is moved to top
It leans against on transparent shell 14, it is seen that more observably find that the coal in the coal seam of current transmission on conveyer belt is pure convenient for monitoring end subscriber
Degree is less than the phenomenon that preset coal purity, consequently facilitating it makes corresponding processing.
Specific embodiment 3：
Fig. 2, Fig. 3 are another specific embodiment of coal on mine conveyer belt purity determination system of the present invention, and specific
Embodiment 2 is compared, the difference is that, coal on mine conveyer belt purity determination system, Microwave emission described in present embodiment
Unit and microwave receiving unit are respectively equipped with a mounting base.In use, Microwave emission unit and microwave receiving unit are respectively pacified
In its corresponding mounting base.
As shown in figure 3, the mounting base includes the disposed in parallel first dynamic support plate 1 and the second dynamic support plate 7, second
Dynamic support plate 7 is located at the top of the first dynamic support plate 1, and frame 5 is arranged in the peripheral circumferential direction of the first dynamic support plate 1, and first is dynamic
First guide rod 2 there are two can slidably being worn relatively in support plate 1, two first guide rods, 2 parallelly distribute on, each first guide rod
2 both ends are separately mounted on the frame 5.Frame 5 is equipped with guide groove 10, the length direction of guide groove 10 and described the
The axis direction of one guide rod 2 is parallel.Second dynamic support plate 7 is equipped with for fixing Microwave emission unit or microwave receiving unit
Mounting hole 13, can slidably wear relatively in the second dynamic support plate 7 there are two the second guide rod 8, two second guide rods 8 are parallel
Distribution, the both ends of each second guide rod 8 are fixed in the first dynamic support plate 1 after bending downward；Each second guide rod 8 respectively with
First guide rod 2 is vertical.First dynamic support plate 1 is equipped with the first transmission screw hole, which is equipped with the
One drive screw 3, first drive screw 3 are thread through the first transmission screw hole.First drive screw 3 can be rotated
Ground is pierced by frame 5 and is fixed on the first adjusting block 4.Neighbouring the first of the part of first drive screw 3 being located in frame 5 is adjusted
One end of block 4 is equipped with the first fastening nut 6.Second dynamic support plate 7 is equipped with the second transmission screw hole, which is arranged
There is the second drive screw 9 for driving the second dynamic support plate 7 to move on the second guide rod 8.Second drive screw, 9 screw thread is worn
The second transmission screw hole is crossed, the second drive screw 9 penetrates rotatably the guide groove 10 and is fixed on the second adjusting block
On 11, the second drive screw 9 is slidably matched with guide groove 10.Neighbouring the of the part of second drive screw 9 being located in frame 5
One end of two adjusting blocks 11 is equipped with the second fastening nut 12.
In use, unscrewing the first fastening nut 6 and the second fastening nut 12, rotation adjusts the first adjusting block 4, the first transmission
Screw rod 3 rotates, and under the screw-driven effect of the first drive screw 3, the first dynamic support plate 1 moves on the first guide rod 2, this
When second move that support plate 7 and the second drive screw 9 are servo-actuated, and the second drive screw 9 slides in guide groove 10 to corresponding direction,
When the second dynamic support plate 7 is moved to the corresponding position on the first guide rod 2, the first fastening nut 6 is fastened；It rotates later
The second adjusting block 11 is adjusted, the rotation of the second drive screw 9, under the screw drive effect of the second drive screw 9, second moves support
Plate 7 moves on the second guide rod 8.As it can be seen that Microwave emission unit and microwave receiving unit are separately mounted to respective correspondence
The second dynamic support plate 7 on after, by carrying out above-mentioned adjusting, can reach and adjust Microwave emission unit and microwave receiving unit
The purpose of position, and the use of screw thread regulative mode increase and adjust Microwave emission unit and the alignment of microwave receiving cell position
Convenience, it is more practical.
Embodiment of above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although referring to aforementioned implementation
Invention is explained in detail for mode, those skilled in the art should understand that：It still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are repaired
Change or replaces, the range for each embodiment technical solution of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (8)
1. a kind of coal on mine conveyer belt purity determination system, which is characterized in that including：
Microwave emission unit, for the L microwave M in the coal seam that time division emission is used to transmit on coal mine conveyer belt, the L
The frequency of a microwave M is different；
Microwave receiving unit, it is right for receiving institute after above-mentioned L microwave M respectively passes through the coal seam transmitted on coal mine conveyer belt
The microwave N answered；
Filter unit is connected with the microwave receiving unit, for filtering to each microwave N that microwave receiving unit receives
Wave processing；
Data storage cell, the data for this system store, and the interior data stored include pre-stored above-mentioned L microwave
The respective power P 1 of M and phase；
Control unit is connected with the filter unit and data storage cell respectively, for being handled based on filtering unit filters
The respective power P 1 of pre-stored above-mentioned L microwave M and phase in each microwave N crossed and the data storage cell, point
Do not calculate the coal seam transmitted on the above-mentioned corresponding coal mine conveyer belt of L microwave N divides coal purity y；It is also used to calculate
Above-mentioned L are divided the average value of coal purity y, which is the coal purity Y in the coal seam transmitted on above-mentioned coal mine conveyer belt；
Touch screen display unit is connected with the control unit, is used for real-time display control unit currently calculated coal purity
Y is also used to modify or set the parameter of this measuring system.
2. coal on mine conveyer belt purity determination system according to claim 1, which is characterized in that
The frequency of L=3,3 microwave Ms is respectively：8GHZ, 9.4GHZ and 10GHZ.
3. coal on mine conveyer belt purity determination system according to claim 1 or 2, which is characterized in that
It further include data uploading unit, which is connected with the control unit, for passing in real time to host computer
The current calculated coal purity Y of defeated control unit.
4. coal on mine conveyer belt purity determination system according to claim 3, which is characterized in that the data upload
Unit uses RS485 communication module.
5. coal on mine conveyer belt purity determination system according to claim 3, which is characterized in that the host computer connects
There is an alarm, the coal purity Y for receiving in the host computer issues alarm signal when being less than preset coal purity；
The alarm includes transparent shell（14）, and be arranged in transparent shell（14）Interior vertical bar（17）, straight up dry
Fan and can slide up and down to and be set in the vertical bar（17）On annular color ball（18）, the vertical bar（17）Top
Portion is fixed on transparent shell（14）Top, the vertical bar（17）Bottom be equipped with for preventing annular color ball（18）It skids off perpendicular
Bar（17）Limit bar（16）, the fan is located at the vertical bar（17）Underface.
6. coal on mine conveyer belt purity determination system according to claim 1 or 2, which is characterized in that control unit base
It is each in above-mentioned L microwave M pre-stored in the processed each microwave N of filtering unit filters and the data storage cell
From power P 1 and phase, calculate separately the coal seam transmitted on the above-mentioned corresponding coal mine conveyer belt of L microwave N point
The method of coal purity y is：
It is corresponding to receive and analog-to-digital conversion is carried out respectively to the processed each microwave N of above-mentioned filtering unit filters；
The corresponding power spectrum and phase spectrum for obtaining above-mentioned each microwave N after analog-to-digital conversion；
Based on the power spectrum of the above-mentioned each microwave N got, the corresponding power P 2 for calculating each microwave N；
Power based on corresponding microwave M corresponding to the above-mentioned power P 2 being calculated and pre-stored above-mentioned each microwave N
P1 calculates above-mentioned each corresponding microwave M and decays to its attenuation A for respectively corresponding to microwave N；
Corresponding microwave M corresponding to phase spectrum and pre-stored above-mentioned each microwave N based on the above-mentioned each microwave N got
Phase, calculate above-mentioned each corresponding respective phase shift Ψ of microwave M；
Based on the phase shift Ψ of the above-mentioned each microwave M being calculated, coal in the coal seam transmitted before coal mine conveyer belt is taken in is calculated
With the content ratio X of gangue, wherein X=К × [(423 × Ψ) -23]/(1.57+ Ψ), wherein К is adjusting parameter, the К's
Value range is 0.5~1.5；
It is based respectively on formula y=1-A-X and calculates transmission before the corresponding coal mine conveyer belt detected of above-mentioned L microwave M is taken in
Each point of coal purity y in coal seam, wherein A and X in formula are sequentially indicated and currently divided the corresponding corresponding microwave M of coal purity y in formula
The content ratio of corresponding above-mentioned calculated respective attenuation amount A and coal and gangue.
7. coal on mine conveyer belt purity determination system according to claim 6, which is characterized in that the Microwave emission
Unit and microwave receiving unit are respectively equipped with a mounting base；
The mounting base includes the disposed in parallel first dynamic support plate（1）With the second dynamic support plate（7）, the second dynamic support plate
（7）Positioned at the first dynamic support plate（1）Top, the first dynamic support plate（1）Peripheral circumferential direction on be arranged with frame（5）, first is dynamic
Support plate（1）On can slidably wear relatively there are two the first guide rod（2）, two first guide rods（2）Parallelly distribute on, each first
Guide rod（2）Both ends be separately mounted to the frame（5）On；
Frame（5）It is equipped with guide groove（10）, guide groove（10）Length direction and first guide rod（2）Axis direction
In parallel；
Second dynamic support plate（7）It is equipped with the mounting hole for fixing Microwave emission unit or microwave receiving unit（13）, second
Dynamic support plate（7）On can slidably wear relatively there are two the second guide rod（8）, two second guide rods（8）Parallelly distribute on, each
Two guide rods（8）Both ends bend downward after be fixed on the first dynamic support plate（1）On；Each second guide rod（8）Respectively with institute
The first guide rod stated（2）Vertically；
First dynamic support plate（1）It is equipped with the first transmission screw hole, which is equipped with the first drive screw（3）, institute
The first drive screw stated（3）It is thread through the first transmission screw hole；First drive screw（3）Rotationally it is pierced by frame
（5）It is fixed on the first adjusting block（4）On；First drive screw（3）Be located at frame（5）Neighbouring first adjusting block of interior part
（4）One end be equipped with the first fastening nut（6）；
Second dynamic support plate（7）It is equipped with the second transmission screw hole, which is equipped with for driving the second dynamic support
Plate（7）In the second guide rod（8）Second drive screw of upper movement（9）；Second drive screw（9）It is thread through described second
It is driven screw hole, the second drive screw（9）Penetrate rotatably the guide groove（10）It is fixed on the second adjusting block（11）On, the
Two drive screws（9）With guide groove（10）It is slidably matched；Second drive screw（9）Be located at frame（5）Interior part it is neighbouring
Second adjusting block（11）One end be equipped with the second fastening nut（12）.
8. coal on mine conveyer belt purity determination system according to claim 1 or 2, which is characterized in that the control
Unit uses MSP430FR5994 single-chip microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810546252.2A CN108844969B (en) | 2018-05-31 | 2018-05-31 | Coal-feeding purity measuring system for mine conveying belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810546252.2A CN108844969B (en) | 2018-05-31 | 2018-05-31 | Coal-feeding purity measuring system for mine conveying belt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108844969A true CN108844969A (en) | 2018-11-20 |
| CN108844969B CN108844969B (en) | 2020-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810546252.2A Active CN108844969B (en) | 2018-05-31 | 2018-05-31 | Coal-feeding purity measuring system for mine conveying belt |
Country Status (1)
| Country | Link |
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| CN (1) | CN108844969B (en) |
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| CN108844969B (en) | 2020-07-24 |
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