CN209310857U - A kind of signal generation apparatus and magnetic strength device tolerance flowmeter - Google Patents
A kind of signal generation apparatus and magnetic strength device tolerance flowmeter Download PDFInfo
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- CN209310857U CN209310857U CN201822136313.6U CN201822136313U CN209310857U CN 209310857 U CN209310857 U CN 209310857U CN 201822136313 U CN201822136313 U CN 201822136313U CN 209310857 U CN209310857 U CN 209310857U
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Abstract
A kind of magnetic strength device tolerance flowmeter disclosed in the present application is to combine the component of signal generation apparatus with the specific structure of flowmeter, and connection structure is simple, is effectively combined signal generation apparatus, improves the precision of the acquisition signal of flowmeter.Two Magnetic Sensors include the first Magnetic Sensor and second sensor；The diameter of the circular motion and the distance between the first Magnetic Sensor and second sensor are L, and the value range of L is 16-20mm；Circular motion center is L3 at a distance from the first Magnetic Sensor center, and the value range 2-12mm of L3, the first Magnetic Sensor center is L1 at a distance from Hall sensor center, and the value range of L1 is 10-12mm；The distance of circular motion center to two Magnetic Sensor lines of centres is H, and the value range of H is 2-5mm.The specific value of these numerical value, the signal that signal generation apparatus generates are the most accurate.
Description
Technical field
The present invention relates to flowmeter technical fields, and in particular to a kind of signal generation apparatus and magnetic strength device tolerance flowmeter.
Background technique
Internet of Things Diaphram flowmeter is communicated using 2G at present, although can satisfy Internet of Things communication, its networking time
Long, power consumption is high.The performance of tradition machinery gas meter has gradually tended to be superseded, and intelligent gas meter is present main product,
Middle Internet of Things gas meter most prospect.Magnetic Sensor is exactly magnetic field, electric current, ess-strain, temperature, light etc. to be caused sensitive member
The variation of part magnetic property is converted into electric signal, detects the sensor of respective physical amount in this way.Magnetic Sensor is in industry
There are many field application, are also in the trend of rapid growth.
Magnetic Sensor is divided into three classes: compass, magnetic sensors, position sensor.Compass: ground club generates magnetic field,
If you can make compass by energy geodesic sphere Surface field.Current sensor: current sensor is also magnetic field sensor.Electric current
Sensor can be used in household electrical appliance, smart grid, electric vehicle, wind-power electricity generation etc..Position sensor: if magnet and
Magnetic Sensor has change in location between each other, and it is exactly linear transducer that this change in location, which is linear, if rotation is exactly
Rotation sensor.
The determination at flow detection position is most important, it directly affects the accuracy of flowmeter, considers in the present invention
This key factor.Since, there are multiple reference points, the flow that different location detects is due to multipath effect in positioning system
It being reduced in the presence of will cause the data on flows stability detected, significantly limiting detection accuracy.
Summary of the invention
For the deficiency in the presence of the prior art, the present invention provides a kind of signal generation apparatus and magnetic strength device tolerance streams
Meter solves the accuracy problem of flow detection position signal generation.To achieve the above object, present invention employs following
Technical solution:
A kind of signal generation apparatus, including magnet, two Magnetic Sensors and Hall sensor, magnet is in any A plane
It moves in a circle, two Magnetic Sensors and Hall sensor are in B plane, and A plane is mutually perpendicular to B plane, Hall sensor
Line with magnet circular motion center is center line, and two Magnetic Sensors are symmetrical about center line, described in the B plane process
Circular motion center.
Further, two Magnetic Sensors include the first Magnetic Sensor and second sensor；The diameter of the circular motion,
And first the distance between Magnetic Sensor and second sensor be L, the value range of L is 16-20mm；
Circular motion center is L3, the value range 2-12mm of L3, the first magnetic biography at a distance from the first Magnetic Sensor center
Sensor center is L1 at a distance from Hall sensor center, and the value range of L1 is 10-12mm；Circular motion center is to two magnetic
The distance of center sensor line is H, and the value range of H is 2-5mm.
Further, the quantity of the magnet is 2；Magnet is symmetrical arranged on magnet rotation round.
A kind of magnetic strength device tolerance flowmeter, including signal generation apparatus described above.A kind of magnetic strength device tolerance flowmeter
It further include shell, the bottom of shell is provided with fixed ontology, is equipped with counter and circuit board, the circuit board on fixed ontology
On be fixed with support shaft, sampling wheel is arranged in support shaft, the magnet is fixed on the periphery of the sampling wheel；It is solid on circuit board
The fixed Magnetic Sensor and Hall sensor；The sampling wheel is connected to the counter by transmission mechanism.
Further, transmission mechanism includes transmission gear and the turbine that engages with transmission gear, and turbine is connected to the meter
Number device.
Further, counter includes print wheel shaft and switch shaft, and turbine is arranged on print wheel shaft, and turbine is engaged with driving cog
Wheel, transmission gear are connected with sampling wheel；Support shaft, the sampling wheel and transmission gear rotation connection are fixed on the circuit board
In the support shaft, the transmission gear is engaged with the turbine；The turbine also pass through the second turbine mechanism be connected to it is described
Switch shaft.
Further, second turbine mechanism includes the second worm screw, and one end of the second worm screw is connected with the second worm gear；Institute
It states and is connected with intermediate gear on switch shaft, intermediate gear is connect with second worm gear.
Further, the sampling wheel and transmission gear are integrally formed, and sampling wheel and transmission gear are connected to by bearing
The support shaft.
Further, the surfaces of revolution of the sampling wheel is vertical with circuit board, installs the Magnetic Sensor and Hall sensor
Circuit board plane face by the sampling wheel the surfaces of revolution rotation center.
Compared with the prior art, the invention has the following beneficial effects:
1. the position by the corresponding magnet of signal generation apparatus, two Magnetic Sensors and Hall sensor is arranged, reduce
The acquisition disturbing pulse of Hall sensor improves the signal accuracy generated by signal generation apparatus.
2. a kind of magnetic strength device tolerance flowmeter combines the component of signal generation apparatus with the specific structure of flowmeter, even
Binding structure is simple, is effectively combined signal generation apparatus, improves the precision of the acquisition signal of flowmeter.
3. two Magnetic Sensors include the first Magnetic Sensor and second sensor；The diameter of the circular motion, Yi Ji
The distance between one Magnetic Sensor and second sensor are L, and the value range of L is 16-20mm；Circular motion center and the first magnetic
The distance of center sensor is L3, the value range 2-12mm of L3, the first Magnetic Sensor center and Hall sensor center away from
It is 10-12mm from the value range for L1, L1；The distance of circular motion center to two Magnetic Sensor lines of centres is H, H's
Value range is 2-5mm.The specific value of these numerical value, the signal that signal generation apparatus generates are the most accurate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the application；
Fig. 2 is the signal generation apparatus installation site enlarged drawing of the application；
Fig. 3 is the right view of Fig. 2；
Fig. 4 is signal generation apparatus associated components position view；
Fig. 5 is the scheme of installation of signal generation apparatus on circuit boards；
Fig. 6 is signal generation apparatus calculated relationship code name figure.
Specific embodiment
Scheme is described further now in conjunction with attached drawing.
Implementation column 1
It is as shown in Figs. 1-5: a kind of signal generation apparatus, including 2, two Magnetic Sensors 4 of magnet and Hall sensor 5, magnetic
Body 2 moves in a circle in any A plane, and two Magnetic Sensors 4 and Hall sensor 5 are in B plane, A plane and B plane phase
Mutually vertical, the line at Hall sensor 5 and 2 circular motion center of magnet is center line, and two Magnetic Sensors 4 are about center line
Symmetrically, the B plane passes through the circular motion center.Two Magnetic Sensors 4 and Hall sensor 5 use model
TMR1302, TMR1302 chip be it is a be integrated with tunnel magnetoresistive (TMR) sensor and CMOS technology, for highly sensitive, high speed,
Low-power consumption, high-precision applications and the full pole magnetic switch developed.TMR1302 uses TMR Magnetic Sensor and CMOS integrated circuit, including
Voltage generator, comparator, Schmidt trigger and CMOS output circuit can convert digital voltage for changing magnetic field signal
Signal output.TMR1302 provides temperature-compensating power supply by builtin voltage voltage-stablizer, and allows wide operating voltage range.
TMR1302 becomes numerous low function with low-work voltage, the supply current of microampere order, high response frequency, wide operating temperature range
The ideal chose of consumption, performance application.
Two Magnetic Sensors 4 include the first Magnetic Sensor and second sensor；The diameter of the circular motion and first
The distance between Magnetic Sensor and second sensor are L, and the value range of L is 16-20mm；
Circular motion center is L3, the value range 2-12mm of L3, the first magnetic biography at a distance from the first Magnetic Sensor center
Sensor center is L1 at a distance from Hall sensor center, and the value range of L1 is 10-12mm；Circular motion center is to two magnetic
The distance of 4 line of centres of sensor is H, and the value range of H is 2-5mm.
The quantity of the magnet is 2；Magnet is symmetrical arranged on magnet rotation round.
A kind of magnetic strength device tolerance flowmeter, including the signal generation apparatus.Magnetic strength device tolerance flowmeter, including it is outer
Shell, the bottom of shell are provided with fixed ontology 9, are equipped with counter and circuit board 11, the circuit board 11 on fixed ontology 9
On be fixed with support shaft 13, sampling wheel 3 is arranged in support shaft 13, the magnet 2 is fixed on the periphery of the sampling wheel 3；Electricity
The Magnetic Sensor 4 and Hall sensor 5 are fixed on the plate of road；The sampling wheel 3 is connected to the counter by transmission mechanism.
Transmission mechanism includes transmission gear 14 and the turbine engaged with transmission gear 14 1, and turbine 1 is connected to the counter.The electricity
Display screen 6. is also connected on the plate of road
Counter includes print wheel shaft 15 and switch shaft 12, and turbine 1 is arranged on print wheel shaft 15, and turbine 1 is engaged with driving cog
Wheel 14, transmission gear 14 is connected with sampling wheel 3；Support shaft 13, the sampling wheel 3 and driving cog are fixed on the circuit board 11
Wheel 14 is rotationally connected with the support shaft 13, and the transmission gear is engaged with the turbine 1；The turbine 1 also passes through the second whirlpool
Wheel mechanism is connected to the switch shaft 12.
Second turbine mechanism includes the second worm screw 8, and one end of the second worm screw 8 is connected with the second worm gear 16；It is described to open
It closes and is connected with intermediate gear on axis 12, intermediate gear is connect with second worm gear 16.The sampling wheel 3 and transmission gear 14
Integrated molding, sampling wheel 3 and transmission gear 14 are connected to the support shaft 13 by bearing.
The surfaces of revolution of the sampling wheel 3 is vertical with circuit board 11, installs the electricity of the Magnetic Sensor 4 and Hall sensor 5
The rotation center of the surfaces of revolution of the sampling wheel 3 is passed through in the plane face of road plate 11.
Embodiment 2
As shown in fig. 6, on the basis of embodiment 1, the first Magnetic Sensor and second sensor be respectively A Magnetic Sensor and
The diameter of circular motion described in B Magnetic Sensor and the distance between the first Magnetic Sensor and second sensor are L, the value of L
Range is 16-20mm；Circular motion center is L3, the value range 2-12mm of L3, the at a distance from the first Magnetic Sensor center
One Magnetic Sensor center is L1 at a distance from Hall sensor center, and the value range of L1 is 10-12mm；Circular motion center is arrived
The distance of two 4 lines of centres of Magnetic Sensor is H, and the value range of H is 2-5mm.Under these values, signal generation apparatus it is defeated
Signal interference is minimum out.Calculation method is as follows:
According to Pythagorean theorem, the horizontal distance between flow sensor and receiver be may be expressed as:
Two-dimensional surface then can be exported as follows according to the coordinate (x, y) of point N:
Objective function is defined as follows:
Fitness=(d1-L1)2+(d2-L2)2+(d3-L3)2
In NB-IoT fuzzy system, the flow sensor of configuration is A (xa, ya, za), B (xb, yb, zb) and C (xc, yc,
zc) and receiver (N) coordinate (x, y, z).
Distance so from N to sensor can be expressed as follows:
The determination at flow detection position is most important, it directly affects the accuracy of flowmeter, considers in the present invention
This key factor, and sensor installation reliability of positioning is optimized using particle swarm optimization algorithm: due to positioning system
In there are multiple reference points, the flow that different location detects is since the presence of multipath effect will cause the data on flows detected
Stability reduces, and significantly limits detection accuracy.In order to solve this problem, there is employed herein CDMA (CDMA) technologies
Identity information is directly propagated, the flow detection letter in the case where position installation flow sensor is tested in each place
Breath, i.e. point location is encoded to it.
It is fashionable for combustion gas stream, the unit strength of an angle is flowed through such as corresponding to flow sensor installation position and gas
Under:
Wherein m represents the radiation coefficient of Lambert, can indicate are as follows:
The half that wherein 1/2 half-power angle fashionable for combustion gas stream, the i.e. radiant power of the angle are center power.
Direct current gain can be indicated with following formula:
In order to reduce the complexity of system, it is assumed that transmitting is parallel with receiving plane, so
The corresponding distance of sensor detection flows is obtained by formula and is respectively as follows: L1, L2, L3。
The effective area of flow sensor is provided by constant A, the distance between gas source and sensor by
D, incident angle areLight emitting angle is
It obviously, can after obtaining flow detection strength retrogression's coefficient of each position by flow sensor by above-mentioned formula
To derive the distance between each sensor and gas source relationship:
Then using existing three side method and optimization algorithm realize sensor installation positioning imitate best actual installation away from
From size L1, L2, L3.It is obtained in this way apart from size L1, L2, L3Value be L value range be 16-20mm；
Circular motion center is L3, the value range 2-12mm of L3, the first magnetic biography at a distance from the first Magnetic Sensor center
Sensor center is L1 at a distance from Hall sensor center, and the value range of L1 is 10-12mm；Circular motion center is to two magnetic
The distance of 4 line of centres of sensor is H, and the value range of H is 2-5mm.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the scope of the claims of invention.
Claims (9)
1. a kind of signal generation apparatus, which is characterized in that including magnet (2), two Magnetic Sensors (4) and Hall sensor (5),
Magnet (2) moves in a circle in any A plane, and two Magnetic Sensors (4) and Hall sensor (5) are in B plane, A plane
It is mutually perpendicular to B plane, the line at Hall sensor (5) and magnet (2) circular motion center is center line, two Magnetic Sensors
(4) symmetrical about center line, the B plane passes through the circular motion center.
2. a kind of signal generation apparatus as described in claim 1, which is characterized in that two Magnetic Sensors (4) include the first magnetic
Sensor and second sensor；The diameter of the circular motion and the distance between the first Magnetic Sensor and second sensor
For L, the value range of L is 16-20mm；
Circular motion center is L3, the value range 2-12mm of L3, the first Magnetic Sensor at a distance from the first Magnetic Sensor center
Center is L1 at a distance from Hall sensor center, and the value range of L1 is 10-12mm；Circular motion center is sensed to two magnetic
The distance of device (4) line of centres is H, and the value range of H is 2-5mm.
3. a kind of signal generation apparatus as described in claim 1, which is characterized in that the quantity of the magnet is 2；Magnet is in magnetic
It is symmetrical arranged on body rotation round.
4. a kind of magnetic strength device tolerance flowmeter, including the signal generation apparatus as described in claim 1-2 is any, feature exists
In, including shell, the bottom of shell be provided with fixed ontology (9), is equipped with counter and circuit board on fixed ontology (9)
(11), it is fixed with support shaft (13) on the circuit board (11), sampling wheel (3), the sampling wheel is arranged in support shaft (13)
(3) magnet (2) are fixed on periphery；The Magnetic Sensor (4) and Hall sensor (5) are fixed on circuit board；It is described to take
Sample wheel (3) is connected to the counter by transmission mechanism.
5. a kind of magnetic strength device tolerance flowmeter as claimed in claim 4, which is characterized in that transmission mechanism includes transmission gear
(14) and with transmission gear (14) turbine (1) engaged, turbine (1) are connected to the counter.
6. a kind of magnetic strength device tolerance flowmeter as claimed in claim 5, which is characterized in that counter include print wheel shaft (15) and
Switch shaft (12) is arranged with turbine (1) on print wheel shaft (15), and turbine (1) is engaged with transmission gear (14), and transmission gear (14) is even
It is connected to sampling wheel (3)；It is fixed with support shaft (13) on the circuit board (11), the sampling wheel (3) and transmission gear (14) turn
Dynamic to be connected to the support shaft (13), the transmission gear is engaged with the turbine (1)；The turbine (1) also passes through the second whirlpool
Wheel mechanism is connected to the switch shaft (12).
7. a kind of magnetic strength device tolerance flowmeter as claimed in claim 6, which is characterized in that second turbine mechanism includes the
Two worm screws (8), one end of the second worm screw (8) are connected with the second worm gear (16)；It is connected with intermediate gear on the switch shaft (12),
Intermediate gear is connect with second worm gear (16).
8. a kind of magnetic strength device tolerance flowmeter as claimed in claim 6, which is characterized in that the sampling wheel (3) and driving cog
Wheel (14) integrated molding, sampling wheel (3) and transmission gear (14) are connected to the support shaft (13) by bearing.
9. a kind of magnetic strength device tolerance flowmeter as described in claim 4-8 is any, which is characterized in that the sampling wheel (3)
The surfaces of revolution is vertical with circuit board (11), installs the plane face of the circuit board (11) of the Magnetic Sensor (4) and Hall sensor (5)
By the rotation center of the surfaces of revolution of the sampling wheel (3).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459100A (en) * | 2018-12-19 | 2019-03-12 | 重庆前卫克罗姆表业有限责任公司 | A kind of signal generation apparatus and magnetic strength device tolerance flowmeter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459100A (en) * | 2018-12-19 | 2019-03-12 | 重庆前卫克罗姆表业有限责任公司 | A kind of signal generation apparatus and magnetic strength device tolerance flowmeter |
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Address after: No. 69, Mount Huangshan Avenue, Yubei District, Chongqing, Chongqing Patentee after: Chongqing Qianwei watch Co., Ltd Address before: No. 69, Mount Huangshan Avenue, Yubei District, Chongqing, Chongqing Patentee before: QIANWEI KROMSCHRODER METERS (CHONGQING) Co.,Ltd. |
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