CN109945931A - Metering device and gauge - Google Patents
Metering device and gauge Download PDFInfo
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- CN109945931A CN109945931A CN201910331120.2A CN201910331120A CN109945931A CN 109945931 A CN109945931 A CN 109945931A CN 201910331120 A CN201910331120 A CN 201910331120A CN 109945931 A CN109945931 A CN 109945931A
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- 239000012530 fluid Substances 0.000 claims abstract description 56
- 239000002184 metal Substances 0.000 claims description 57
- 229910052751 metal Inorganic materials 0.000 claims description 57
- 230000001360 synchronised effect Effects 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 21
- 230000006698 induction Effects 0.000 claims description 14
- 230000005672 electromagnetic field Effects 0.000 claims description 13
- 230000000737 periodic effect Effects 0.000 claims description 7
- 230000004913 activation Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 57
- 230000005611 electricity Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 12
- 238000007599 discharging Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
Abstract
The application provides a kind of metering device and gauge, including sample circuit, is converted into the first electric signal for acquiring the flowing information of fluid, and by the flowing information；Signal processing circuit connects the sample circuit, and for generating the second electric signal according to first electric signal, second electric signal includes processing result information of the signal processing circuit to first electric signal；Processor connects the signal processing circuit, for determining the flow information of the fluid according to second electric signal.The application is realized without magnetized fluid metering, improves the stability and accuracy of fluid metering result.
Description
Technical field
This application involves field of measuring techniques, in particular to a kind of metering device and gauge.
Background technique
The rotation that liquid meter instrument is generally based on rotary part carries out the metering of the data such as fluid flow, flow velocity.It is existing
Some liquid metering devices generally use magnetic sensor, that is, permanent magnet is housed on its rotary part, are arranged by control
Reed near permanent magnet is contacted or is disconnected, and simulant electronic switch is carried out, to judge the rate and dosage of liquid flowing.
However, magnetic sensor is easier to by external interference, and the error of metering is caused, and permanent magnet and reed meeting
There is the case where magnetic decrease or demagnetization in slowly aging over time.
Summary of the invention
The embodiment of the present application is designed to provide a kind of metering device and gauge, to realize without magnetized fluid meter
Amount improves the stability and accuracy of fluid metering result.
The embodiment of the present application first aspect provides a kind of metering device, comprising: sample circuit, for acquiring the stream of fluid
Dynamic information, and the flowing information is converted into the first electric signal；Signal processing circuit connects the sample circuit, is used for root
The second electric signal is generated according to first electric signal, second electric signal includes the signal processing circuit to first electricity
The processing result information of signal；Processor connects the signal processing circuit, for according to second electric signal determination
The flow information of fluid.
During above-mentioned realization, the flowing information of fluid is acquired by sample circuit, and the flowing information is converted
At the first electric signal.Then the second electric signal, second electricity are generated according to first electric signal by signal processing circuit
Signal includes processing result information of the signal processing circuit to first electric signal.Finally by processor, according to institute
State the flow information that the second electric signal determines the fluid.It realizes and carries out fluid metering without magnetization, improve fluid metering dress
The stability and accuracy set.
Further, the sample circuit includes: induction coil, corresponding to rotary part be arranged, the induction coil with
The rotary part does not contact, for the flowing information of fluid to be converted into first electric signal.
During above-mentioned realization, the sample circuit may include: induction coil.The induction coil can be set
Above gauge rotary part, induction coil is not contacted with the rotary part, in process fluid flow, will drive rotating part
Part rotation, the flowing information of the fluid can be converted into first electric signal by the induction coil at this time.And then it realizes
Without magnetized the flowing information of fluid is converted into electric signal, improves the stability and accuracy of intelligence sample.
Further, the sample circuit includes: exciting circuit, to export periodic activation signals；Main coil, it is described
Main coil connects exciting circuit, and the periodic activation signals for being exported according to the exciting circuit generate cyclically-varying
Electromagnetic field；At least two secondary coils are connected with each other at least two secondary coil between each secondary coil,
Each secondary coil and the main coil electromagnetic coupling, for generating the first electricity according to the periodically variable electromagnetic field
Kinetic potential；Wherein, when acquiring the fluid information of the fluid, first electromotive force of described two secondary coils is corresponding to rotation
The rotation of rotation member generates the second electromotive force secondary coil.
During above-mentioned realization, the sample circuit may include: main coil and at least two secondary coils, the master
Coil connects exciting circuit, and the exciting circuit can export periodic activation signals, and main coil can be produced according to pumping signal
Raw periodically variable electromagnetic field.It is connected with each other between each secondary coil at least two secondary coil, each
The secondary coil and the main coil electromagnetic coupling, secondary coil can generate the according to the periodically variable electromagnetic field
One electromotive force.Wherein, when acquiring the fluid information of the fluid, first electromotive force of described two secondary coils is corresponding
The second electromotive force is generated in the rotation of rotary part.Wherein first electric signal includes: first electromotive force and described
Two electromotive force.In this way, accurately collected fluid flow information can be converted to by main coil and secondary coil cooperation
Electric signal.
Further, the main coil circumferentially shape, at least two secondary coil circumferentially shape branch in the master
The circumferential inner that coil surrounds.
During above-mentioned realization, the main coil can surround circumferential, and at least two secondary coil can be in
The circumferential inner that circumferential branch surrounds in the main coil.And main coil and secondary coil can be arranged in same plane
It is interior, so that main coil is coupled with secondary coil.
Further, the signal processing circuit includes: first switch, and the first switch connects the sample circuit,
The first electric signal control switch for being generated according to the sample circuit is opened；Storage circuit, the storage circuit connect
The first switch is connect, for being discharged by the circuit that the first switch controls when the first switch is opened, and
Generate second electric signal including discharge information.
During above-mentioned realization, the signal processing circuit may include: first switch and storage circuit, and described first
Switch connects the sample circuit, the first electric signal control switch that first switch can be generated according to the sample circuit
It opens.The storage circuit connects the first switch, when the first switch is opened, the electric energy meeting that is stored in storage circuit
It is discharged by the circuit that the first switch controls, and generates second electric signal including discharge information.
Further, the first switch includes: at least two triodes, and the base stage of at least two triode is corresponding
At least two secondary coil is connected, for receiving from first electromotive force of at least two secondary coil or institute
State the second electromotive force；The storage circuit includes that at least two-way charging circuit, at least two-way charging circuit respectively corresponds company
The collector for connecing at least two triode, for being discharged respectively by least two triode；It is described at least
The emitter of two triodes connects the processor, for receiving the control signal of the processor.
During above-mentioned realization, the first electric signal can be used as the Continuity signal of first switch, therefore can use three poles
Pipe is as first switch.The first switch includes: at least two triodes, and the base stage of at least two triode is corresponding to be connected
At least two secondary coil is connect, for receiving first electromotive force from least two secondary coil or described
Second electromotive force；The storage circuit includes that at least two-way charging circuit, at least two-way charging circuit is connected respectively
The collector of at least two triode, for being discharged respectively by least two triode；Described at least two
The emitter of a triode connects the processor, for receiving the control signal of the processor.Storage circuit can store
Electric energy, and can be discharged by opening for first switch, therefore can be using RC charging circuit as storage circuit.With letter
Change wiring.
Further, the processor includes: detection unit, connects the signal processing circuit, for detecting described
Whether two electric signals meet preset condition；Timing unit connects the detection unit, described in determining in the detection unit
Second electric signal carries out timing when meeting the preset condition, and generates clocking information；Flow determination unit connects the timing
Unit, for determining the flow information of the fluid according to the clocking information and preset rules.
During above-mentioned realization, the processor may include: detection unit, timing unit and flow determination unit.
Wherein, the detection unit connects the signal processing circuit, can detecte second telecommunications of signal processing circuit generation
Number whether meet preset condition.The condition of here presetting at can be set according to actual needs, for example the second electric signal is voltage
Signal, then preset condition can be discharging condition, i.e., if detecting that the second electric signal is to belong to discharge signal, can determine
Second electric signal meets preset condition, does not otherwise meet.Timing unit, the timing unit connect the detection unit,
When the detection unit determines that second electric signal meets the preset condition, timing unit carries out timing, and generates meter
When information.Flow determination unit, connects the timing unit, and flow determination unit can be believed according to the timing of the timing unit
Breath and preset rules determine the flow information of the fluid.Preset rules can be set according to actual needs herein, such as
Preset rules may is that the discharge time for recording the second different electric signals in clocking information respectively, and when by different electric discharges
Between carry out related calculation, when operation result meets a certain threshold value, be determined as the attribute value of a flow information, and then obtain fluid
Flow information.
Further, further includes: second switch, the second switch connect the sample circuit, for controlling described adopt
Sample circuit opens or closes.
During above-mentioned realization, metering device can also include: second switch.The second switch connects the sampling
Circuit can be used for controlling opening or closing for the sample circuit.And then when not needing using metering device, sampling is closed
Circuit, need using when open sample circuit again, increase the flexibility of metering device.
Further, the second switch includes: synchronous circuit, and the synchronous circuit is separately connected the main coil and institute
At least two secondary coils are stated, for controlling main coil progress information collection synchronous at least two secondary coil.
During above-mentioned realization, the second switch may include: synchronous circuit.The synchronous circuit is separately connected institute
Main coil and at least two secondary coil are stated, for controlling the main coil and the same stepping of at least two secondary coils
Row information acquisition.So that main coil with the information collection of secondary coil be it is synchronous, avoid information collection is asynchronous from bringing
Information inaccuracy problem, improve the accuracy of calculation amount device.
The embodiment of the present application second aspect provides a kind of gauge, comprising: described in the embodiment of the present application first aspect
Metering device and rotary part, the rotary part include shaft and turntable, when shaft described in the fluid driven turntable
The shaft is followed to rotate；Sheet metal, the sheet metal are arranged on the turntable, the rotary part described in the fluid driven
Shi Suoshu sheet metal follows the rotary part to rotate together；The metering device is arranged above the sheet metal, is used for root
The flow information of the fluid is determined according to the turned position of the sheet metal.
During above-mentioned realization, above-mentioned gauge includes metering device described in the embodiment of the present application first aspect, because
This all beneficial effect with metering device described in the embodiment of the present application first aspect, details are not described herein.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application will make below to required in the embodiment of the present application
Attached drawing is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore should not be seen
Work is the restriction to range, for those of ordinary skill in the art, without creative efforts, can be with
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 is the schematic diagram of the gauge of one embodiment of the application；
Fig. 2 is the schematic diagram of the metering device of one embodiment of the application；
Fig. 3 is the schematic diagram of the metering device including two secondary coils of one embodiment of the application；
Fig. 4 is the circuit diagram of the metering device of the corresponding embodiment of the application Fig. 3；
Fig. 5 is the schematic diagram of the metering device including three secondary coils of one embodiment of the application；
Fig. 6 is the circuit diagram of the metering device of the corresponding embodiment of the application Fig. 5.
Appended drawing reference:
10- gauge, 100- metering device, 110- sample circuit, 110a- induction coil, 111- main coil, 112- grade
Coil, 113- exciting circuit, 120- signal processing circuit, 121- first switch, 122- storage circuit, 130- processor, 131-
Detection unit, 132- timing unit, 133- flow determination unit, 134- output port, 140- second switch, 141- synchronize electricity
Road, 142- pressure difference circuit, 143- impulse circuit；
200- rotary part, 201- shaft, 202- turntable, 300- sheet metal.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application is described.?
In the description of the present application, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relatively heavy
The property wanted.
Fig. 1 is please referred to, is the schematic diagram of the gauge 10 of one embodiment of the application, the gauge 10 of the present embodiment includes
Metering device 100, rotary part 200 and sheet metal 300.Rotary part 200 includes shaft 201 and turntable 202, and shaft 201 connects
Switch through 202 gauge 10 of disk, when fluid driven shaft 201 rotates, turntable 202 follows shaft 201 to rotate synchronously.Sheet metal
300 are arranged on turntable 202, and when fluid driven rotary part 200, sheet metal 300 follows rotary part 200 to rotate together.
Metering device 100 is arranged above sheet metal 300, may include sample circuit 110 in metering device 100, sample circuit 110 can
To acquire the rotation information of sheet metal 300, and then metering device 100 can determine fluid according to the turned position of sheet metal 300
Flow information.
In an embodiment, sheet metal 300 can be the semicircle adapted to 202 size of turntable.Or turntable 202 can be with
For partially metallised turntable 202, for example continuous half is metallized in turntable 202, and metalized portion can be made
For the replacement of sheet metal 300.
As shown in Fig. 2, its schematic diagram for the metering device 100 of one embodiment of the application, metering device 100 may include
Sample circuit 110, signal processing circuit 120 and processor 130.Sample circuit 110 is used to acquire the flowing information of fluid, Yu Yi
In embodiment, the flowing information of fluid can be characterized by acquiring the rotation information of sheet metal 300, and flowing information is converted
At the first electric signal.Signal processing circuit 120 connects sample circuit 110, for generating the second electric signal according to the first electric signal,
Second electric signal may include processing result information of the signal processing circuit 120 to the first electric signal.130 connection signal of processor
Processing circuit 120, for determining the flow information of fluid according to the second electric signal.
Fig. 3 is the schematic diagram of the metering device 100 including two secondary coils 112 of one embodiment of the application.The application
The induction coil 110a of the metering device 100 of embodiment may include main coil 111 and two secondary coils 112.Implement in one
In example, main coil 111 can surround circumferential, and two secondary coils 112 can circumferentially shape branch be surrounded in main coil 111
Circumferential inner.And main coil 111 and secondary coil 112 can be arranged in the same plane, two secondary coils 112 can be with
The angle at 120 ° of interval is arranged, so that main coil 111 is coupled with secondary coil 112.
In an embodiment, induction coil 110a be can be set on the sheet metal 300 of 10 rotary part 200 of gauge
Just, induction coil 110a is not contacted with sheet metal 300, and when sheet metal 300 is with fluid rotation, induction coil 110a can be incited somebody to action
The rotation information of sheet metal 300 is converted into electric signal, and then the flowing information of fluid is converted into the first electric signal.
Main coil 111 generates the electromagnetic field of variation according to the cyclically-varying of pumping signal, two secondary coils 112 because
For the electromagnetic field of variation, induced magnetic field is produced, induced magnetic field can reach sheet metal 300, it will generate in sheet metal 300 faint
Current vortex, thus generate and secondary coil 112 the antipodal opposing magnetic field of induced magnetic field.The generation of opposing magnetic field can be led
It causes the induced voltage of secondary coil 112 to weaken speed to accelerate.When sheet metal 300 is rotated, sheet metal 300 is respectively and at least
The relative distance of two secondary coils 112 can change, the opposing magnetic field for causing at least two secondary coils 112 to be subject to respectively
Intensity can change, therefore can be sentenced by the duration that the induced voltage of at least two secondary coils 112 weakens respectively
The circle number of the disconnected rotation of sheet metal 300, speed and direction, to realize the angle position detection of rotary part 200.
Fig. 4 is the circuit diagram of the metering device 100 of the corresponding embodiment of the application Fig. 3.Sample circuit 110 includes including master
111, two 112 exciting circuits 113 of secondary coil of coil, main coil 111 connect exciting circuit 113.Exciting circuit 113 can be defeated
Periodic activation signals out, main coil 111 generate periodically variable electromagnetic field according to pumping signal.Two secondary coils 112
It is connected with each other between secondary coil, each secondary coil 112 and 111 electromagnetic coupling of main coil, secondary coil 112 can be according to week
The electromagnetic field of phase property variation generates the first electromotive force.When sheet metal 300 turns to 112 lower section of secondary coil, secondary coil 112
It can produce the second electromotive force.Collected fluid flow information can be turned by main coil 111 and the cooperation of secondary coil 112
It is changed to electric signal.
In an embodiment, main coil 111 can be it is single, 112 quantity of secondary coil can be 2, the electricity of main coil 111
It is connected to exciting circuit 113, two secondary coils 112 are electrically connected to signal processing circuit 120,120 basis of signal processing circuit
The voltage signal that secondary coil 112 exports, to judge to measure fluid flow information.In an embodiment, main coil 111 and two
Secondary coil (L1, L2) 112 can integrate on printed circuit, and two secondary coils 112 are relatively independent and using side in parallel
Formula accesses circuit.
As shown in figure 4, signal processing circuit 120 may include first switch 121 and storage circuit 122.First switch 121
Sample circuit 110 is connected, the first electric signal control switch that first switch 121 can be generated according to sample circuit 110 is opened, because
This first electric signal can be used as the Continuity signal of first switch 121.
Storage circuit 122 connects first switch 121, when first switch 121 is opened, the electricity that stores in storage circuit 122
It can be discharged by the circuit that first switch 121 controls, and generate the second electric signal including discharge information.Storage circuit
122 can store electric energy, and can be discharged by opening for first switch 121, therefore can be made using RC charging circuit
For storage circuit 122.Two secondary coils (L1, L2) 112 respectively correspond setting RC charging circuit all the way, i.e. resistance RL1 and electricity
Hold CL1, resistance RL2 and capacitor CL2 and separately constitutes two-way RC charging circuit.
In an embodiment, first switch 121 can use triode, and each secondary coil 112 be correspondingly arranged all the way three
Pole pipe is come as shown in figure 4, the base stage of triode Q1 and triode Q2 are correspondingly connected with secondary coil (L1 and L1) 112 for receiving
The first electromotive force or the second electromotive force of secondary coil (L1 and L1) 112；Storage circuit 122 include two-way RC charging circuit, two
Road RC charging circuit is connected respectively the collector of triode Q1 and triode Q2, for passing through triode Q1 and three poles respectively
Pipe Q2 discharges；Triode Q1 connects processor 130 with the emitter of triode Q2, for receiving the control of processor 130
Signal.
Processor 130 may include detection unit 131, timing unit 132 and flow determination unit 133, in an embodiment
In, processor 130 can be by chip microcontroller.131 connection signal processing circuit 120 of detection unit, can detecte signal processing
Whether the second electric signal that circuit 120 generates meets preset condition.Wherein, preset condition can be set according to actual needs
It is fixed.In an embodiment, the second electric signal is voltage signal, then preset condition can be discharging condition, i.e., if detecting
Two electric signals are to belong to discharge signal, then can determine that the second electric signal meets preset condition, otherwise not meet.
132 connecting detection unit 131 of timing unit, when detection unit 131 determines that the second electric signal meets preset condition,
Timing unit 132 carries out timing, and generates clocking information.Flow determination unit 133 connects timing unit 132, and flow determines single
Member 133 can determine the flow information of fluid according to the clocking information and preset rules of timing unit 132.Wherein, preset rules
Can be set according to actual needs, in an embodiment, preset rules can be recorded respectively in clocking information it is different
The discharge time of second electric signal, and different discharge times is carried out related calculation, when operation result meets a certain threshold value, really
It is set to the attribute value of a flow information, and then obtains the flow information of fluid.
In an embodiment, processor 130 can also include output port 134, the fluid flow information for will determine
It is output to relevant device.
In an embodiment, the metering device 100 of the present embodiment can also include second switch 140.Second switch 140 connects
Sample circuit 110 is connect, can control opening or closing for sample circuit 110.And then when not needing using metering device 100,
Close sample circuit 110, need using when be then turned on sample circuit 110.
In an embodiment, second switch 140 includes synchronous circuit 141, and synchronous circuit 141 is separately connected main coil 111
With two secondary coils 112, it to be used for the progress information collection synchronous with two secondary coils 112 of main control line circle 111.Implement in one
In example, synchronous circuit 141 can be realized using with logic gate.
In an embodiment, pressure difference circuit 142 can be set between synchronous circuit 141 and sample circuit 110, for example,
By pressure difference circuit 142, voltage threshold is set, when voltage value reaches voltage threshold in circuit, determination meets pressure differential,
Meeting turning circuit, so that just allowing sample circuit 110 to work in the case where meeting pressure differential.Pressure difference circuit 142
One end connects synchronous circuit 141, and the other end is separately connected triode Q1 and triode Q2.
In an embodiment, processor 130 may include multiple input/output port I/O, can be with an I/O setting wherein
Impulse circuit 143,143 other end of impulse circuit connect synchronous circuit 141, can be used for assisting triode Q1 and triode Q2 depth
Conducting.
As shown in figure 4, when metering device 100 works, exciting circuit 113, which exports, periodically to swash in an embodiment
Pulse is encouraged to main coil 111, when no sheet metal 300 is by secondary coil (L1, L2) 112, main coil 111 generates variation
Electromagnetic field, two secondary coils (L1, L2) 112 produce identical induced electromotive force i.e. the first electromotive force.When resistance RL1 and electricity
Resistance RL2 is electrically connected when the input/output port I/O of processor 130, and two input/output port I/O can export the height in period
Level, when input/output port I/O exports high level, capacitor CL1 and capacitor CL2 are started to charge.
When input/output port I/O exports low level, capacitor CL1 and capacitor CL2 start to discharge, at this time electrical connection and resistance
The input/output port I/O pin state of RL1 and resistance RL2 is cut to input state by original output state.What secondary coil 112 generated
Induced electricity dynamic formula can allow triode Q1 and triode Q2 to be connected, and capacitor CL1 and capacitor CL2 start respectively from triode Q1 and three poles
Pipe Q2 electric discharge, until the induced electromotive force that secondary coil (L1 and L1) 112 generates can not driving triode Q1 and Q2 opening.At this time
Capacitor CL1 and capacitor CL2 electric discharge is also continuing, and starts to discharge by resistance RL1 and resistance RL2 two-way respectively.
Whether the detection unit 131 in processor 130 can be accorded with by detecting the second electric signal of signal processing circuit 120
Close preset condition.In an embodiment, when preset condition is discharging condition, if first detecting signal rising edge, Zhi Houjian
Signal failing edge is measured, then judges that the second electric signal meets discharging condition, at this point, timing unit 132 records discharge time
To obtain the time T1 and T2 that capacitor CL1 and capacitor CL2 are discharged completely when no sheet metal 300 passes through secondary coil 112.
When the fluid is flowing, the rotary part 200 of gauge 10 is driven to rotate, sheet metal 300 rotates with it, and works as sheet metal
300 close to secondary coil (L1 and L1) 112 when, the turn-on time of three pole Q1 and three pole Q2 will increase, and lead to capacitor CL1 and capacitor
CL2 increases from the discharge time of three pole Q1 and three pole Q2 respectively, and capacitor CL1 and capacitor CL2 are respectively from resistance RL1 and resistance
The opposite reduction of RL2 two-way discharge time capacitor CL1 and capacitor CL2 will discharge from resistance RL1 and resistance RL2 two-way respectively at this time
Time is respectively to be denoted as T3 and T4, then passes through following calculation formula:
Δ T1=T3-T1
Δ T2=T4-T2
When Δ T1 indicates that sheet metal 300 passes through coil L1 with no sheet metal 300 by the discharge time of CL1 when coil L1
The difference of the discharge time of capacitor CL1.Δ T2 indicates sheet metal 300 by the discharge time of capacitor CL2 and nothing when coil L2
The difference of the discharge time of capacitor CL2 when sheet metal 300 passes through coil L2.
It may determine that sheet metal 300 and secondary coil (L1 and L1) by setting preset rules according to Δ T1 and Δ T2
112 present position states.In an embodiment, preset rules, which may is that, assumes sheet metal 300 not by main coil 111
In the case of the state of coil L1 and L2 be defined as 0, state is defined as 1 when having sheet metal 300 close to coil L1 and L2, then generates
4 kinds of states, respectively 00,10,01,11.The sequencing occurred by judging four kinds of states, that is, can determine that sheet metal 300
The circle number of rotation and direction.
Fig. 5 is the schematic diagram of the metering device 100 including three secondary coils 112 of one embodiment of the application.The line of induction
Enclosing 110a may include main coil 111 and three secondary coils 112.
In an embodiment, main coil 111 can surround circumferential, and three secondary coils 112 can circumferentially shape branch
In the circumferential inner that main coil 111 surrounds, and main coil 111 and secondary coil 112 can be arranged in the same plane, make
Main coil 111 is obtained to be coupled with secondary coil 112.
Fig. 6 is the circuit diagram of the metering device 100 of the corresponding embodiment of the application Fig. 5.Main coil 111 connects exciting circuit
113, exciting circuit 113 can export periodic activation signals, and main coil 111 can generate cyclically-varying according to pumping signal
Electromagnetic field.It is connected with each other between each secondary coil 112 in three secondary coils 112, each secondary coil 112 and main coil
111 are of coupled connections, and secondary coil 112 can generate the first electromotive force according to periodically variable electromagnetic field.When 300 turns of sheet metal
When moving to 112 lower section of secondary coil, secondary coil 112 can produce the second electromotive force.Wherein the first electric signal includes: the first electricity
Kinetic potential and the second electromotive force.In this way, can be accurately by collected fluid by main coil 111 and the cooperation of secondary coil 112
Flow information is converted to electric signal.
In an embodiment, main coil 111 can be it is single, 112 quantity of secondary coil can be 3, the electricity of main coil 111
It is connected to exciting circuit 113, two secondary coils 112 are electrically connected to signal processing circuit 120,120 basis of signal processing circuit
The voltage signal that secondary coil 112 exports, to judge to measure fluid flow information.As shown in fig. 6, main coil (L) 111 and three
Secondary coil (L1, L2 and L3) 112 can be all integrated on printed circuit, and three secondary coils 112 are relatively independent and using simultaneously
The mode of connection accesses circuit.
In an embodiment, as shown in fig. 6, each secondary coil 112 be correspondingly arranged all the way triode as first switch
121, three secondary coils (L1, L2 and L3) 112 respectively correspond setting triode Q1, triode Q2 and triode Q3 as first
Switch 121.Three secondary coils (L1, L2 and L3) 112 respectively correspond setting RC charging circuit, i.e. resistance RL1 and capacitor all the way
CL1, resistance RL2 and capacitor CL2, resistance RL3 and capacitor CL3 separately constitute three road RC charging circuits as storage circuit 122.
In an embodiment, each secondary coil 112 is correspondingly arranged triode all the way, triode Q1, triode Q2 and three
The base stage of pole pipe Q3 is correspondingly connected with secondary coil (L1, L1 and L3) 112, carrys out secondary coil (L1, L1 and L3) 112 for receiving
First electromotive force or the second electromotive force；Three road RC charging circuits are connected respectively triode Q1, triode Q2 and triode Q3
Collector, for being discharged respectively by triode Q1, triode Q2 and triode Q3；Triode Q1, triode Q2 and
The emitter of triode Q3 connects processor 130, for receiving the control signal of processor 130.
Processor 130 may include: detection unit 131, timing unit 132 and flow determination unit 133.In an embodiment
In, processor 130 can be by chip microcontroller.131 connection signal processing circuit 120 of detection unit, can detecte signal processing
Whether the second electric signal that circuit 120 generates meets preset condition.Wherein, 132 connecting detection unit 131 of timing unit, is being examined
When survey unit 131 determines that the second electric signal meets preset condition, timing unit 132 carries out timing, and generates clocking information.Flow
Determination unit 133 connects timing unit 132, and flow determination unit 133 can be according to the clocking information of timing unit 132 and default
Rule determines the flow information of fluid.Processor 130 can also include output port 134, for believing the fluid flow determined
Breath is output to relevant device.Referring particularly to the correlation detailed description in the corresponding embodiment of Fig. 4.
In an embodiment, the metering device 100 of the present embodiment can also include: second switch 140.Second switch 140
Sample circuit 110 is connected, can control opening or closing for sample circuit 110.Referring particularly to the phase in the corresponding embodiment of Fig. 4
Close detailed description.
In an embodiment, second switch 140 includes: synchronous circuit 141, and synchronous circuit 141 is separately connected main coil 111
With three secondary coils 112, it to be used for the progress information collection synchronous with three secondary coils 112 of main control line circle 111.Such as Fig. 6 institute
Show, synchronous circuit 141 can be realized using with logic gate.
In an embodiment, pressure difference circuit 142 can be set between synchronous circuit 141 and sample circuit 110, so that full
Sample circuit 110 is just allowed to work in the case where sufficient pressure differential.As shown in fig. 6, the connection of 142 one end of pressure difference circuit synchronizes
Circuit 141, the other end are separately connected triode Q1, triode Q2 and triode Q3.Referring particularly in the corresponding embodiment of Fig. 4
Correlation detailed description.
In an embodiment, processor 130 may include multiple input/output port I/O, can be with an I/O setting wherein
Impulse circuit 143,143 other end of impulse circuit connect synchronous circuit 141, can be used for assisting triode Q1, triode Q2 and three
The conducting of pole pipe Q3 depth.
As shown in fig. 6, when metering device 100 works, exciting circuit 113, which exports, periodically to swash in an embodiment
Pulse is encouraged to main coil 111, when no sheet metal 300 is by secondary coil 112, main coil (L) 111 generates the electromagnetism of variation
, three secondary coils (L1, L2 and L3) 112 produce identical induced electromotive force i.e. the first electromotive force, triode Q1, three poles
Pipe Q2 and triode Q3 can be triode crystal.Resistance RL1, resistance RL2, resistance RL3 are electrically connected in processor 130
I/O port, two I/O ports can export the low and high level in period, and when I/O port exports high level, capacitor CL1, capacitor CL2, capacitor CL3 are opened
Begin to charge.When I/O port exports low level, capacitor CL1, capacitor CL2, capacitor CL3 start to discharge, at this time electrical connection and resistance
RL1, resistance RL2, resistance RL3 I/O port pin state input state is cut to by original output state.The sense that secondary coil 112 generates
Answer electrodynamic type that triode Q1, triode Q2 and triode Q3 can be allowed to be connected, capacitor CL1, capacitor CL2, capacitor CL3 start respectively from
Triode Q1, triode Q2 and triode Q3 electric discharge, the induced electromotive force that secondary coil (L1, L2, L3) 112 generates can not drive
Triode Q1, triode Q2 and triode Q3 are opened, and capacitor CL1, capacitor CL2, capacitor CL3 electric discharge are also continuing at this time, at this time
Then pass through resistance RL1, resistance RL2, tri- Lu Fang electricity of resistance RL3 respectively.In the process, the I/O mouth of processor 130 can capture
Second electric signal of signal processing circuit 120, the second electric signal include the discharge information of capacitor CL1, capacitor CL2, capacitor CL3,
Detection unit 131 can detecte whether the second electric signal meets preset condition, it is assumed that preset condition is discharging condition, if first examined
Signal rising edge is measured, detects signal failing edge later, then can determine that second electric signal meets discharging condition, at this point,
Timing unit 132 records discharge time, it can obtains capacitor CL1, capacitor CL2, capacitor CL3 and passes through in no sheet metal 300
Time T5, T6, the T7 being discharged completely when secondary coil 112.
When the fluid is flowing, the rotary part 200 of gauge 10 is driven to rotate, sheet metal 300 rotates with it, and works as sheet metal
300 close to secondary coil (L1, L2, L3) 112 when, the turn-on time of triode Q1, triode Q2 and triode Q3 will increase, and lead
Appearance CL1, capacitor CL2, capacitor CL3 is sent a telegraph to increase from the discharge time of triode Q1, triode Q2 and triode Q3 respectively, and it is electric
Hold CL1, capacitor CL2, capacitor CL3 to reduce relatively from resistance RL1, resistance RL2, tri- tunnel discharge time of resistance RL3 respectively, and capacitor
CL1, capacitor CL2, capacitor CL3 pass through velocity of discharge specific capacitance CL1, the electricity of triode Q1, triode Q2 and triode Q3 respectively
Hold CL2, capacitor CL3 passes through resistance RL1 respectively, the speed of resistance RL2, resistance RL3 electric discharge is much bigger.To capacitor CL1, electricity at this time
Holding CL2, capacitor CL3 is respectively respectively to be denoted as T8, T9, T10 from resistance RL1, resistance RL2, tri- tunnel discharge time of resistance RL3, then
Pass through following calculation formula:
Δ T3=T8-T5
Δ T4=T9-T6
Δ T5=T10-T7
Δ T3 indicates that sheet metal 300 passes through coil with no sheet metal 300 by the discharge time of capacitor CL1 when coil L1
The difference of the discharge time of capacitor CL1 when L1.Δ T4 indicates sheet metal 300 by the discharge time of capacitor CL2 when coil L2
With no sheet metal 300 by the difference of the discharge time of capacitor CL2 when coil L2.Δ T5 indicates sheet metal 300 by coil
The difference of the discharge time of capacitor CL3 when the discharge time of capacitor CL3 passes through coil L3 with no sheet metal 300 when L3.
By according to Δ T3, Δ T4 and Δ T5 set preset rules may determine that sheet metal 300 and secondary coil (L1,
L2, L3) 112 present position states.In an embodiment, preset rules be may is that when sheet metal 300 carries out secondary coil L1
When all standing, definition status A.When sheet metal 300 carries out all standing to coil L2, definition status B.When sheet metal 300
When carrying out all standing to coil L3, definition status C.By judging that A, B, the sequence of C-state appearance and number can determine that gold
Belong to direction and the circle number of piece 300.
In embodiments herein, the number of turns of main coil 111 can be 5 circles, the number of turns of at least two secondary coils 112
10 circles can be distinguished, naturally it is also possible to select other suitable the number of turns, the application does not limit this.
In addition, each functional module in each embodiment of the application can integrate one independent portion of formation together
Point, it is also possible to modules individualism, an independent part can also be integrated to form with two or more modules.
Claims (10)
1. a kind of metering device characterized by comprising
Sample circuit is converted into the first electric signal for acquiring the flowing information of fluid, and by the flowing information；
Signal processing circuit connects the sample circuit, for generating the second electric signal according to first electric signal, described the
Two electric signals include processing result information of the signal processing circuit to first electric signal；
Processor connects the signal processing circuit, for determining the flow information of the fluid according to second electric signal.
2. the apparatus according to claim 1, which is characterized in that the sample circuit includes:
Induction coil is arranged corresponding to rotary part, and the induction coil do not contact with the rotary part, for by fluid
The flowing information is converted into first electric signal.
3. the apparatus according to claim 1, which is characterized in that the sample circuit includes:
Exciting circuit, to export periodic activation signals；
Main coil, the main coil connect exciting circuit, the periodic excitation letter for being exported according to the exciting circuit
Number generate periodically variable electromagnetic field；
At least two secondary coils are connected with each other at least two secondary coil, each between each secondary coil
The secondary coil and the main coil electromagnetic coupling, it is electronic for generating first according to the periodically variable electromagnetic field
Gesture；
Wherein, when acquiring the fluid information of the fluid, first electromotive force of described two secondary coils is corresponding to rotation
The rotation of rotation member generates the second electromotive force secondary coil.
4. device according to claim 3, which is characterized in that the main coil circumferentially shape, at least two grades
The coil circumferential inner that circumferentially shape branch surrounds in the main coil.
5. device according to claim 3, which is characterized in that the signal processing circuit includes:
First switch, the first switch connection sample circuit, described first for being generated according to the sample circuit
Electric signal control switch is opened；
Storage circuit, the storage circuit connect the first switch, for when the first switch is opened, pass through described the
The circuit of one switch control is discharged, and generates second electric signal including discharge information.
6. device according to claim 5, which is characterized in that the first switch includes:
At least two triodes, the base stage of at least two triode are correspondingly connected at least two secondary coil, are used for
Receive first electromotive force or second electromotive force from least two secondary coil；
The storage circuit includes at least two-way charging circuit, at least two-way charging circuit be connected respectively it is described at least
The collector of two triodes, for being discharged respectively by least two triode；
The emitter of at least two triode connects the processor, for receiving the control signal of the processor.
7. the apparatus according to claim 1, which is characterized in that the processor includes:
Detection unit connects the signal processing circuit, for detecting whether second electric signal meets preset condition；
Timing unit connects the detection unit, described pre- for determining that second electric signal meets in the detection unit
If carrying out timing when condition, and generate clocking information；
Flow determination unit connects the timing unit, for determining the fluid according to the clocking information and preset rules
Flow information.
8. device according to claim 3, which is characterized in that further include:
Second switch, the second switch connects the sample circuit, for controlling opening or closing for the sample circuit.
9. device according to claim 8, which is characterized in that the second switch includes:
Synchronous circuit, the synchronous circuit is separately connected the main coil and at least two secondary coil, for controlling
State main coil progress information collection synchronous at least two secondary coil.
10. a kind of gauge characterized by comprising metering device as claimed in any one of claims 1-9 wherein, and
Rotary part, the rotary part include shaft and turntable, when shaft described in the fluid driven turntable follow it is described
Shaft rotation；
Sheet metal, the sheet metal are arranged on the turntable, when rotary part described in the fluid driven sheet metal
The rotary part is followed to rotate together；
The metering device is arranged above the sheet metal, for determining the fluid according to the turned position of the sheet metal
Flow information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910331120.2A CN109945931A (en) | 2019-04-23 | 2019-04-23 | Metering device and gauge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910331120.2A CN109945931A (en) | 2019-04-23 | 2019-04-23 | Metering device and gauge |
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| CN109945931A true CN109945931A (en) | 2019-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910331120.2A Pending CN109945931A (en) | 2019-04-23 | 2019-04-23 | Metering device and gauge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113390475A (en) * | 2021-01-29 | 2021-09-14 | 张军虎 | Multifunctional metering module and rotary metering device |
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| EP1033578A2 (en) * | 1999-02-27 | 2000-09-06 | Horst Prof. Dr. Ziegler | Device for determining the rotation of a rotating element |
| US20130220028A1 (en) * | 2012-02-24 | 2013-08-29 | Hideo Kondo | Fluid flow rate measuring device and water meter |
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