CN209326719U - A kind of rotation detection device - Google Patents
A kind of rotation detection device Download PDFInfo
- Publication number
- CN209326719U CN209326719U CN201821852406.2U CN201821852406U CN209326719U CN 209326719 U CN209326719 U CN 209326719U CN 201821852406 U CN201821852406 U CN 201821852406U CN 209326719 U CN209326719 U CN 209326719U
- Authority
- CN
- China
- Prior art keywords
- induction coil
- circuit
- coil
- rotation detection
- induction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The utility model discloses a kind of rotation detection devices, including the pallet rotated about the axis and it is located at pallet top and fixed rotation detection module, the tray upper surface is in partially metallised state, the rotation detection module includes the exciting circuit being sequentially connected, PCB coil and signal processing circuit, the PCB coil includes with plane parallel on pallet and the center of circle is located at excitation coil on the axis and angularly multiple induction coils of circumferential array inside excitation coil, multiple induction coils are diagonally two-by-two with pairs of, the signal processing circuit includes the sample circuit for switching amplifying circuit and being connected to the switch amplifying circuit sampling end, and one end of each induction coil is respectively connected to the input terminal of switch amplifying circuit.The switch amplifying circuit of the utility model can amplify the inductive signal of induction coil, increase the maximum distance between the upper plane of pallet and PCB coil plane.
Description
Technical field
The utility model relates to the fluid meterings such as liquid meter, gas dosing fields, and in particular to a kind of rotation detection dress
It sets.
Background technique
In fluid metering application at present, the most common mode be moved based on fluid or gas fluxion strap mechanical part rotate come
Detect the flow velocity or flow of liquid or gas.Wherein there is a kind of rotation detection device, is used to count mechanical part turnning circle
Using by traffic transformation as digital signal.
There is several frequently seen rotation detection mode in fluid metering in the prior art:
The first uses magnetic sensor, mostly places small-sized permanent magnet in rotor position of keeping to the side, permanent magnet turns around axle center
It is dynamic, the magnetic sensors such as tongue tube are placed above permanent magnet rotating path, and magnetic field state variation is switched into electric signal.But due to
Strong external magnetic field is easy to interference magnetic sensor state, therefore this method anti-interference ability is poor.
Second, if Chinese patent discloses a kind of Patent No. ZL200680007522.8, patent name is induction type
The utility model patent of angle level sensor, the utility model solve traditional magnetic sensor and are easy to be asked by what permanent magnet interfered
Topic.But the output signal of its secondary coil is directly output to comparator, since the output signal of secondary coil is to pass through induction
The rotation induction of metallization disk, signal itself is fainter, so directly outputting information to the mode of comparator, meeting
The disk and the distance between revolution meter module for making metallization by biggish limitation, the two need it is closer away from
From being slightly away from some will largely effect on testing result.
Utility model content
The purpose of this utility model is in view of the above-mentioned problems, providing a kind of rotation detection dress for capableing of amplification detection signal
It sets.
In order to achieve the above objectives, the utility model uses following technical proposal:
A kind of rotation detection device including the pallet rotated about the axis and is located at pallet top and fixed rotation inspection
Survey module, the tray upper surface be in partially metallised state, the rotation detection module include the exciting circuit being sequentially connected,
PCB coil and signal processing circuit, the PCB coil includes with plane parallel on pallet and the center of circle is located on the axis
Excitation coil and angularly multiple induction coils of circumferential array, multiple induction coils are diagonally made into two-by-two inside excitation coil
It is right, which is characterized in that the signal processing circuit includes switch amplifying circuit and is connected to the switch amplifying circuit sampling end
Sample circuit, and one end of each induction coil be respectively connected to switch amplifying circuit input terminal.
In above-mentioned rotation detection device, the sample circuit includes control comparison circuit and is connected to the control ratio
Compared with the charge-discharge circuit of circuit, the switch amplifying circuit is connected to the control comparison circuit by the charge-discharge circuit.
In above-mentioned rotation detection device, the sample circuit includes multiple charge-discharge circuits, the switch
Amplifying circuit includes multiple amplifiers, and each induction coil is all connected to the input terminal of different amplifiers, and each amplifier is adopted
Sample end is connected to control comparison circuit by the charge-discharge circuit, and corresponding two amplifiers of induction coil pass through not in pairs
Same charge-discharge circuit is connected to control comparison circuit.
In above-mentioned rotation detection device, corresponding two amplifiers of two non-paired induction coils are filled by same
Discharge circuit is connected to control comparison circuit.
In above-mentioned rotation detection device, each charge-discharge circuit includes resistance and capacitor interconnected, described
The common end of capacitor and resistance is connected to respective amplifier and control comparison circuit, the other end ground connection of the capacitor.
In above-mentioned rotation detection device, the driving end of each amplifier is connected to single-chip microcontroller by impulse generator
Port is driven, is opened every time by single-chip microcontroller control two of them amplifier, and induction coil corresponding two pairs of every time
A amplifier is opened simultaneously or is closed.
In above-mentioned rotation detection device, the corresponding amplifier of the pairs of induction coil of every two is connected to the same pulse
Generator, the corresponding amplifier of non-paired induction coil are connected to different impulse generators, and different impulse generators connect respectively
It is connected to single-chip microcontroller different driving port.
In above-mentioned rotation detection device, the amplifier is transistor, and each induction coil is all connected to corresponding crystalline substance
The base stage of body pipe, the emitter of the transistor are connected to corresponding pulses generator, and collector is connected to corresponding charge and discharge electricity
Road；
The induction coil is equal-sized four, is followed successively by the first induction coil, the second induction coil, third induction
Coil and the 4th induction coil, and it is located at diagonal the first induction coil and third induction coil with pairs of, the second induction coil
With the 4th induction coil with pairs of；
The corresponding transistor of first induction coil and the corresponding transistor of third induction coil are connected to same pulse generation
Device, the corresponding transistor of the second induction coil and the corresponding transistor of the 4th induction coil are connected to same impulse generator.
In above-mentioned rotation detection device, the control comparison circuit includes the single-chip microcontroller, collection in the single-chip microcontroller
At having comparator and timer, the positive port of comparator for being connected to the comparator is led on the single-chip microcontroller and comparator is negative
Port, and the positive port of comparator is connected to a charge-discharge circuit, comparator negative terminal mouth is connected to another charge-discharge circuit, and
The corresponding charge-discharge circuit of pairs of induction coil is respectively connected to the positive port of comparator of the same comparator and compares
Device negative terminal mouth.
In above-mentioned rotation detection device, the tray upper surface has fan-shaped sheet metal so that tray upper surface is in portion
Divide metallised state；
Multiple induction coils are lighted from respective center respectively, after outside pile warp multi-turn, in the center point of excitation coil
It is connected with each other, the central point of each induction coil is connected with corresponding amplifier；
The rotation detection module is multilayer board, and the shielding including PCB coil and above PCB coil
Layer, the excitation coil and induction coil are printed in PCB coil layer.
Utility model has the advantages that
1. switch amplifying circuit can amplify the inductive signal of induction coil, upper plane and the PCB coil for increasing pallet are flat
Maximum distance between face.
2. sharing a sample circuit, and comparator, timer in sample circuit using the operating mode of time sharing sampling
Space and cost can be saved using the single-chip microcontroller of integrated comparator and timer in the prior art.
3. constituting sample circuit by capacitor, resistance, comparator and timer, examined by the discharge time of capacitor and discharge capacity
The changing value for surveying inductive signal is remarkably improved the distance between sheet metal on rotation detection module and pallet, can determine whether simultaneously
Whether distance change between the two, detection rotation detection module occur disengaging etc..
Detailed description of the invention
Fig. 1 is rotation detection device and tray position relation schematic diagram；
Fig. 2 is the structural schematic diagram for printing PCB coil on a printed circuit board；
Fig. 3 is the detection principle diagram of rotation detection device.
In figure: pallet 1；Sheet metal 2；Rotate detection module 3；Axis 4；Excitation coil 5；Induction coil 6；First line of induction
Enclose A；Second induction coil B；Third induction coil C；4th induction coil D, capacitor C6, C7；Resistance R6, R7；Single-chip microcontroller U1；Swash
Encourage circuit 7；Sample circuit 8；Control comparison circuit 81；Charge-discharge circuit 82；Comparator 83；Timer 84；Switch amplifying circuit
9；Impulse generator 91；Transistor Q.
Specific embodiment
The utility model is described in more detail with reference to the accompanying drawings and detailed description.
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, mechanical transmission component will drive pallet 1 and rotate around its axis 4, root when liquid or gas flow
According to actual liquid or gas flow, pallet 1 is rotated by direction pivots clockwise or counter-clockwise, pallet 1 can for round tray or
Non-circular pallet, the preferably circular pallet of the present embodiment, 1 upper surface of pallet inlay or coated with fan-shaped metal materials, such as
In Fig. 1,1 upper surface of pallet has inlayed a semicircular sheet metal 2 and has been also possible to 120 degree, 150 in actual use certainly
The sheet metal 2 of the other angles such as degree.
Rotation detection module 3 is fixed on right above pallet 1, in actual use, can between pallet 1 and rotation detection module 3
Placement or filling glass, the nonmetallic materials such as plastics.
Specifically, the rotation detection module 3 of the present embodiment includes at exciting circuit 7, PCB coil and the signal being sequentially connected
Circuit is managed, and rotation detection module 3 here is a printed circuit board, printed board can be doubling plate or multi-layer board, and minimum
Shielded layer including PCB coil layer and above PCB coil layer, the present embodiment select four-layer structure, from top to bottom successively are as follows:
First layer is component layer, and the second layer is shielded layer, and third layer is vacant layer, and the 4th layer is PCB coil layer；When module is run
Interference of the PCB coil layer to component layer has been isolated in shielded layer well after coming, while other electromagnetic waves being also isolated well
Interference to PCB coil layer.
PCB coil includes the excitation coil 5 and multiple induction coils 6 for being printed on printed circuit board close to 1 one side of pallet,
Excitation coil 5 is rounded and multiple induction coils 6 are enclosed in its circle.Multiple induction coils 6 angularly circumferential array, and
Each coil size is consistent, collectively constitutes a circle.Further, one side and support of the rotation detection module 3 close to pallet 1
1 upper surface of disk is parallel, and the circular center of circle that the center of circle of excitation coil 5 and multiple induction coils 6 are encircled into is respectively positioned on support
On the axis 4 that disk 1 rotates.It should be noted that detection turnning circle at least needs 2 induction coils 6, if you need to judge rotation side
To then at least needing 4 induction coils 6.As shown in Fig. 2, the present embodiment is specifically described using 4 induction coils, and 4
Induction coil is respectively the first induction coil A, the second induction coil B, third induction coil C and the 4th induction coil D.Four senses
Answer coil 6 diagonal two-by-two in pairs, particularly, the first induction coil A and third induction coil C match in pairs, the second induction coil B
With the 4th induction coil D with pairs of.
Further, excitation coil 5 is connected to exciting circuit 7, and exciting circuit 7 can use RC differential circuit, excitation electricity
The driving pulse that road 7 is connected to single-chip microcontroller U1 to make exciting circuit 7 generate the period by single-chip microcontroller U1.In the present embodiment, pulse
The pulsewidth of signal is set as 5~20ns, such as 10ns, can effectively reduce power consumption and reduces external disturbance.
Particularly, as shown in figure 3, the signal processing circuit of the present embodiment includes switch amplifying circuit 9 and is connected to switch
The sample circuit 8 of 9 sampling end of amplifying circuit, and one end of each induction coil 6 is respectively connected to the input of switch amplifying circuit 9
The inductive signal of induction coil 6 is amplified at end, and by the inductive signal being exaggerated send to sample circuit 8 be compared it is defeated
Out；Wherein, sample circuit 8 includes controlling comparison circuit 81 and multiple charge-discharge circuits 82 for being connected to control comparison circuit 81,
Switch amplifying circuit 9 is connected to control comparison circuit 81 by multiple charge-discharge circuits 82.
Specifically, switch amplifying circuit 9 includes multiple amplifiers, and each induction coil is all connected to the defeated of different amplifiers
Enter end, the sampling end of each amplifier is connected to control comparison circuit 81 by charge-discharge circuit 82, and induction coil 6 is right in pairs
Two amplifiers answered are connected to control comparison circuit 81, two non-paired induction coils 6 by different charge-discharge circuits 82
Corresponding two switch amplifying circuits are connected to control comparison circuit 81 by the same charge-discharge circuit 82.Specific to this reality
Example is applied, as shown in figure 3, the first induction coil A amplifier corresponding with the second induction coil B passes through the same charge-discharge circuit 82
It is connected to control comparison circuit 81, third induction coil C and the corresponding amplifier of the 4th induction coil D pass through another charge and discharge
Circuit 82 is connected to control comparison circuit 81, and two induction coils 6 here share a charge-discharge circuit 82, can save
Raw material reduce cost, simplify circuit, and will not have any impact to testing goal.
Further, as shown in Fig. 2, four induction coils 6 of the present embodiment are lighted from respective center respectively, outside around
After multi-turn, it is connected with each other in the center point of excitation coil 5, the central point of each induction coil 6 and corresponding amplification
Device is connected.
Further, as shown in figure 3, each charge-discharge circuit 82 include capacitor C6, C7 interconnected and resistance R6,
The common end of R7, capacitor C6, C7 and resistance R6, R7 in each charge-discharge circuit 82 are connected to respective amplifier and control
Comparison circuit 81 processed, the other end ground connection of capacitor C6, C7, the other end of resistance R6, R7 are connected in single-chip microcontroller U1；It controls more electric
Road 81 includes aforementioned single-chip microcontroller U1, is integrated with comparator 83 and timer 84 in single-chip microcontroller U1, connection is led on single-chip microcontroller U1
In the positive port of the comparator of comparator 83 and comparator negative terminal mouth, and the positive port of comparator is connected to a charge-discharge circuit 82,
Comparator negative terminal mouth is connected to another charge-discharge circuit 82, and the pairs of corresponding charge-discharge circuit 82 of induction coil 6
It is respectively connected to the positive port of comparator and the comparator negative terminal mouth of the same comparator 83.Specific to the present embodiment, such as Fig. 3 institute
Showing, the first induction coil A is connected with each other with the one end third induction coil C, and the other end is then connected with corresponding amplifier, the
The respective amplifier sampling end of one induction coil A and third induction coil C passes through respective charge-discharge circuit 82 respectively and connects respectively
It is connected to the anode and cathode of same comparator 83.Similarly, the second induction coil B is connected with each other with the 4th one end induction coil D,
The other end is then connected with corresponding amplifier, the second induction coil B and the respective amplifier sampling end of the 4th induction coil D
The anode and cathode of same comparator 83 are separately connected by respective charge-discharge circuit 82 respectively.In this way, a pair of of induction coil
On inductive signal can be compared by comparator 83.Wherein the first induction coil A, third induction coil C connection
The comparator that comparator is connect with the second induction coil B, the 4th induction coil D can be same, or different, phase
One or more comparators are integrated in Ying Di, single-chip microcontroller U1.
Further, the driving end of each amplifier is connected to the driving port of single-chip microcontroller U1 by impulse generator 91,
It is opened every time by single-chip microcontroller U1 control two of them amplifier, and 6 corresponding two amplifiers of induction coil pairs of every time are same
When open or close.Specifically, amplifier here is preferably transistor Q, and each induction coil 6 is all connected to respective transistor
The base stage of Q, i.e. input terminal；The emitter of transistor Q, i.e. driving end are connected to corresponding driving by corresponding pulses generator 91
Port；The collector of transistor Q, i.e. sampling end are connected to corresponding charge-discharge circuit 82.
Further, in order to save the use of port and impulse generator 91, simplify integrated circuit, while again because each pair of
Induction coil needs are effective simultaneously, so the corresponding transistor Q of each pair of induction coil 6 is connected to the same impulse generator here
91, each impulse generator 91 is then connected to the different driving port of single-chip microcontroller U1, and each single-chip microcontroller U1 only needs a driving
It is effective that port can control simultaneously one pair of them induction coil.It is exactly the first induction coil A corresponding specific to the present embodiment
The corresponding transistor Q of transistor Q and third induction coil C is connected to same impulse generator 91, and the second induction coil B is corresponding
Transistor Q and the corresponding transistor Q of the 4th induction coil D be connected to same impulse generator 91.
Rotation is described by taking four induction coils, a comparator, two charge-discharge circuits and half-round metal piece as an example below
The realization principle of detection device:
When work, half-round metal piece 2 on round tray 1 by rotating clockwise or counterclockwise, what exciting circuit 7 generated
By excitation coil 5, by some cycles, electromagnetic radiation signal, induction coil 6 can then generate the voltage of induction to pulse signal outward；
When the half-round metal piece 2 on rotation 3 lower circular pallet 1 of detection module is gone at some induction coil 6 of top, will form
Inductance vortex, leads to bigger power consumption, induced voltage is less than normal at this；When on the round tray 1 of 3 lower section of rotation detection module
Half-round metal piece 2 far from some induction coil 6 of top when, vortex is substantially not present, the induced voltage is relatively
Greatly.
When MCU driving end exports low level to impulse generator 91, transistor Q is closed；The output of MCU driving end is high
When level is to impulse generator 91, transistor Q conducting, transistor Q is in magnification region at this time, and corresponding capacitor C6 or C7 is opened
Begin to discharge, the velocity of discharge is influenced by the induced voltage of induction coil 6, and discharge time excited target signal pulse-width controlled is usually several
A nanosecond.Small induced voltage signal is enlarged into the strong voltage signal on capacitor by transistor Q in induction coil 6, can be non-
The often effective spacing for promoting detection sensitivity, increasing between the fan-shaped sheet metal 2 on rotation detection module 3 and pallet 1.
Before acquiring signal, for single-chip microcontroller U1 by capacitor C6, C7 is fully charged, and the pulse signal that exciting circuit 7 generates is by swashing
Coil 5 is encouraged by some cycles electromagnetic radiation signal outward；When sampling, switch amplifying circuit is controlled by single-chip microcontroller U1, by a timing
Between interval timesharing open the first induction coil A, third induction coil C respectively where transistor Q and the second induction coil B, the
Transistor Q where four induction coil D difference, those skilled in the art can be according between specific application scenarios setting time
Every, and basic principle is, applies to be less than in the interval time of the comparatively faster scene of revolving speed and applies the field relatively slow in revolving speed
The interval time of scape saves the target of power consumption under the premise of guaranteeing detection accuracy with satisfaction.And by transistor Q respectively to capacitor
C6, C7 electric discharge, convert capacitor C6, C7 discharge capacity size for the voltage sensed.For example, when the first induction coil A and third
After induction coil C is opened, due to the presence of 1 upper half circular metal plate 2 of round tray, the first induction coil A and the third line of induction
The induced voltage for enclosing C is in different size, causes remaining voltage after discharging on capacitor C6 and C7 different, then by single-chip microcontroller U1
Middle comparator 83 compares the voltage swing of two capacitors C6 and C7, and the slow of capacitor for controlling high voltage is discharged to two electricity
It is equal to hold C6 and C7 voltage, single-chip microcontroller U1 timer 84, which counts, obtains the discharge time.Since sheet metal 2 is semicircle, therefore can
To judge 2 position of sheet metal corresponding to the first induction coil A and the underface third induction coil C, root by discharge time length
Turnning circle is judged according to the variation of position.The first induction coil A, third induction coil C and second are successively obtained by the above process
The state of induction coil B, the 4th induction coil D are compared with preset position encoded table, pass through each state change
Relationship can obtain 2 rotation direction of sheet metal.It is worth noting that, the equally available charge and discharge of mode sampled using AD
The value of capacitor residual voltage, in contrast, adding timer more advantageous in power consumption control using comparator.
Further, single-chip microcontroller U1 can use low-power consumption PIC single chip microcomputer in the utility model, which has
High performance RISC CPU, flexible oscillator structure, while including simulation comparison module, timer module meets practical function
Energy demand, the characteristic of low-power consumption can meet battery powered usage scenario, therefore be selected as the control core of rotation detection module 3
The heart.
It should be strongly noted that the present embodiment by by small voltage change switch to more obvious time change come
Sensitivity is improved, position judgement can be carried out based on smaller signal, avoid the prior art since weak output signal problem causes
Rotate the problem of spacing between the fan-shaped sheet metal 2 on detection module and pallet 1 is by larger limitation.The utility model is available
In occasions such as liquid flow mearuement, the measurement of gas flow, low-speed machinery transmission circle counting numbers；And effectively solve traditional tongue tube
Modes such as metering method, Hall sensor metering method, plug-in unit inductance type non-magnetic metering etc. are vulnerable to external electromagnetic signal interference
Problem.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (10)
1. a kind of rotation detection device including the pallet (1) rotated around axis (4) and is located above pallet (1) and fixed
Rotation detection module (3), pallet (1) upper surface be in partially metallised state, the rotation detection module (3) include according to
Secondary connected exciting circuit (7), PCB coil and signal processing circuit, the PCB coil include equal with plane on pallet (1)
Row and the center of circle be located at excitation coil (5) on the axis (4) and inside excitation coil (5) angularly circumferential array it is multiple
Induction coil (6), multiple induction coils (6) are diagonal two-by-two with pairs of, which is characterized in that the signal processing circuit includes switch
Amplifying circuit (9) and the sample circuit (8) for being connected to described switch amplifying circuit (9) sampling end, and each induction coil (6)
One end is respectively connected to the input terminal of switch amplifying circuit (9).
2. rotation detection device according to claim 1, which is characterized in that the sample circuit (8) includes that control is compared
Circuit (81) and the charge-discharge circuit (82) for being connected to control comparison circuit (81), the switch amplifying circuit (9) pass through
The charge-discharge circuit (82) is connected to the control comparison circuit (81).
3. rotation detection device according to claim 2, which is characterized in that the sample circuit includes multiple described fills
Discharge circuit, the switch amplifying circuit (9) includes multiple amplifiers, and each induction coil is all connected to the defeated of different amplifiers
Enter end, the sampling end of each amplifier is connected to control comparison circuit (81), and the pairs of line of induction by the charge-discharge circuit
Corresponding two amplifiers of circle (6) are connected to control comparison circuit (81) by different charge-discharge circuits (82).
4. rotation detection device according to claim 3, which is characterized in that two non-paired induction coils (6) are corresponding
Two amplifiers are connected to control comparison circuit (81) by the same charge-discharge circuit (82).
5. rotation detection device according to claim 3, which is characterized in that each charge-discharge circuit (82) includes mutual
The common end of the resistance (R6, R7) and capacitor (C6, C7) of connection, the capacitor (C6, C7) and resistance (R6, R7) is connected to
Respective amplifier and control comparison circuit (81), the other end ground connection of the capacitor (C6, C7).
6. according to rotation detection device described in claim 3-5 any one, which is characterized in that the driving end of each amplifier
It is connected to the driving port of single-chip microcontroller (U1) by impulse generator (91), two of them are controlled by the single-chip microcontroller (U1) every time
Amplifier is opened, and corresponding two amplifiers of induction coil (6) pairs of every time are opened simultaneously or closed.
7. rotation detection device according to claim 6, which is characterized in that the pairs of induction coil of every two (6) is corresponding
Amplifier is connected to the same impulse generator (91), and the corresponding amplifier of non-paired induction coil (6) is connected to different arteries and veins
It rushes generator (91), different impulse generators (91) are connected to single-chip microcontroller different driving port.
8. rotation detection device according to claim 7, which is characterized in that the amplifier is transistor (Q), each sense
Coil (6) is answered to be all connected to the base stage of respective transistor (Q), the emitter of the transistor (Q) is connected to corresponding pulses
Device (91), collector are connected to corresponding charge-discharge circuit (82)；
The induction coil (6) is equal-sized four, is followed successively by the first induction coil (A), the second induction coil (B), the
Three induction coils (C) and the 4th induction coil (D), and be located at diagonal the first induction coil (A) and third induction coil (C) and match
In pairs, the second induction coil (B) and the 4th induction coil (D) are with pairs of；
The corresponding transistor (Q) of first induction coil (A) and the corresponding transistor (Q) of third induction coil (C) are connected to same
Impulse generator (91), the corresponding transistor (Q) of the second induction coil (B) and the corresponding transistor (Q) of the 4th induction coil (D)
It is connected to same impulse generator (91).
9. rotation detection device according to claim 7, which is characterized in that the control comparison circuit (81) includes described
Single-chip microcontroller (U1), the single-chip microcontroller (U1) is interior to be integrated with comparator (83) and timer (84), draws on the single-chip microcontroller (U1)
There are the positive port of comparator for being connected to the comparator (83) and comparator negative terminal mouth, and the positive port of comparator is connected to one and fills
Discharge circuit (82), comparator negative terminal mouth is connected to another charge-discharge circuit (82), and pairs of induction coil (6) is respectively right
The charge-discharge circuit (82) answered is respectively connected to the positive port of comparator and the comparator negative terminal mouth of the same comparator (83).
10. rotation detection device according to claim 3, which is characterized in that pallet (1) upper surface has fan-shaped gold
Belong to piece (2) so that pallet (1) upper surface is in partially metallised state；
Multiple induction coils (6) are lighted from respective center respectively, after outside pile warp multi-turn, in the center of circle of excitation coil (5)
Place is connected with each other, and the central point of each induction coil (6) is connected with corresponding amplifier；
The rotation detection module (3) is multilayer board, and the shielding including PCB coil and above PCB coil
Layer, the excitation coil (5) and induction coil (6) are printed in PCB coil layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821852406.2U CN209326719U (en) | 2018-11-12 | 2018-11-12 | A kind of rotation detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821852406.2U CN209326719U (en) | 2018-11-12 | 2018-11-12 | A kind of rotation detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209326719U true CN209326719U (en) | 2019-08-30 |
Family
ID=67709903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821852406.2U Active CN209326719U (en) | 2018-11-12 | 2018-11-12 | A kind of rotation detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209326719U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530437A (en) * | 2019-09-10 | 2019-12-03 | 长沙铨准电子科技有限公司 | A kind of directly excitation formula angle position sensing metering device |
| CN111854897A (en) * | 2020-08-05 | 2020-10-30 | 湖北楚天汉仪科技有限公司 | Detection device for metal rotary water meter with quantifiable detection distance |
| CN113063468A (en) * | 2020-11-26 | 2021-07-02 | 杭州绿鲸科技有限公司 | Low-power-consumption nonmagnetic device for metering fluid flow and implementation method |
-
2018
- 2018-11-12 CN CN201821852406.2U patent/CN209326719U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530437A (en) * | 2019-09-10 | 2019-12-03 | 长沙铨准电子科技有限公司 | A kind of directly excitation formula angle position sensing metering device |
| CN111854897A (en) * | 2020-08-05 | 2020-10-30 | 湖北楚天汉仪科技有限公司 | Detection device for metal rotary water meter with quantifiable detection distance |
| CN113063468A (en) * | 2020-11-26 | 2021-07-02 | 杭州绿鲸科技有限公司 | Low-power-consumption nonmagnetic device for metering fluid flow and implementation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109443462A (en) | A kind of antimagnetic measuring and testing device | |
| CN111174856B (en) | Rotation detection device | |
| CN209326719U (en) | A kind of rotation detection device | |
| CN209512943U (en) | A kind of antimagnetic measuring and testing device | |
| CN100535603C (en) | Angular position inductive sensor | |
| CN103575340B (en) | Liquid flow non-magnetic detector and detection method thereof | |
| CN103575303B (en) | Variable-reluctance transducer interface with the threshold value pending based on integration | |
| CN105866713B (en) | Feedback of status formula autoexcitation fluxgate sensor | |
| CN106501618A (en) | Capacitor's capacity measuring circuit | |
| CN104034373B (en) | Self-charging type electromagnetic flowmeter | |
| CN204286507U (en) | A kind of water meter of electronic measurement of self power generation | |
| CN110412310A (en) | Angle position inductosyn and inducing method | |
| WO2021238137A1 (en) | Non-magnetic metering device, metering method, and fluid metering apparatus | |
| CN112577414B (en) | Pulse type LC oscillation induction type angle sensor and angle position measuring method | |
| CN101329408B (en) | Receiver of underground metal pipeline detector | |
| CN106441479A (en) | Counting device for automatically controlling sampling detection of two magnetic sensors with low power consumption | |
| CN209945434U (en) | Induction type non-magnetic remote water meter | |
| CN209820546U (en) | Antimagnetic metering device | |
| CN212721576U (en) | Nonmagnetic metering device and fluid metering equipment | |
| CN110530437A (en) | A kind of directly excitation formula angle position sensing metering device | |
| CN209495737U (en) | Metering device and gauge | |
| CN209878040U (en) | Fluid metering circuit, flowmeter and meter | |
| Teng et al. | Maintenance-free wireless multi-functional sensing enabled by electrostatic generator | |
| CN219589736U (en) | Intelligent non-magnetic gas meter based on Internet of things | |
| CN107218979A (en) | Low power consumption electromagnetic water meter converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |