CN113834538A - Electronic water meter - Google Patents
Electronic water meter Download PDFInfo
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- CN113834538A CN113834538A CN202010585039.XA CN202010585039A CN113834538A CN 113834538 A CN113834538 A CN 113834538A CN 202010585039 A CN202010585039 A CN 202010585039A CN 113834538 A CN113834538 A CN 113834538A
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- fluid
- induction
- water meter
- electronic water
- blade
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 230000006698 induction Effects 0.000 claims abstract description 101
- 239000012530 fluid Substances 0.000 claims abstract description 100
- 230000005291 magnetic effect Effects 0.000 claims abstract description 72
- 238000012545 processing Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 11
- 230000035699 permeability Effects 0.000 claims description 7
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 230000007774 longterm Effects 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000005293 ferrimagnetic effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- -1 acryl Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/06—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission
- G01F1/075—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission with magnetic or electromagnetic coupling to the indicating device
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/06—Indicating or recording devices
- G01F15/061—Indicating or recording devices for remote indication
Abstract
An electronic water meter comprises a fluid module and an induction module. The fluid module comprises induction blades and an impeller, wherein the induction blades are pivoted on the impeller, and when the impeller rotates due to the flowing of fluid, the impeller drives the induction blades to rotate together. The induction module and the fluid module are separated in independent space and are magnetically connected, the induction module comprises a waterproof shell and an induction circuit, and the waterproof shell is wrapped under the induction circuit and isolates the fluid from contacting the induction circuit. The induction circuit generates a magnetic field downwards, and the induction circuit obtains a characteristic mode of a fluid signal through the disturbance of the magnetic field caused by the magnetic change of the rotating induction blade.
Description
Technical Field
The present invention relates to an electronic water meter, and more particularly, to an electronic water meter in which an inductive circuit is completely isolated from a fluid module and a fluid signal is obtained by magnetic field disturbance.
Background
In the prior art, most of the conventional water meters are designed mechanically, which utilizes the momentum of the water flowing in the pipeline to push the turbine structure in the water meter, and the turbine structure drives the turbine center and the gear assembly to rotate together, and finally the gear assembly converts the momentum of the water flow into a pointer or a digit wheel and the like to be displayed on the water meter.
However, the conventional mechanical water meter only depends on the gear assembly to achieve the purpose of quantifying the water flow, but after long-term use, a large number of gears in the gear assembly are prone to cause errors due to abrasion or deformation, or even cannot operate, so that the obtained metering data is poor in reliability. And because the gear assembly causes considerable resistance to water flow, the sensitivity of sensing water flow is poor for the case of a small amount of water, which may not be metered because the gear assembly cannot be pushed.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an electronic water meter, which solves the technical problems that the reliability of the obtained metering data is poor due to the abrasion or deformation of gears under the long-term use in the prior art, and the metering cannot be carried out under the condition of less water quantity, and achieves the purposes of improving the reliability and the sensitivity.
In order to achieve the above object, the present invention provides an electronic water meter including a fluid module and a sensing module. The fluid module comprises induction blades and an impeller, wherein the induction blades are pivoted on the impeller, and when the impeller is subjected to the change of the flow momentum of the fluid, the induction blades are driven to rotate. The sensing module is arranged on the fluid module and forms an independent closed space, and the sensing module comprises a waterproof shell, a sensing circuit and a battery and is isolated from the closed space formed by the fluid module. The battery is connected with the induction circuit, the waterproof shell is wrapped below the induction circuit and the battery and is isolated from the fluid to contact the induction circuit and the battery, the induction blade is pivotally arranged below the bottom surface of the waterproof shell, the induction circuit generates a magnetic field downwards, and the induction circuit obtains a characteristic mode of a fluid signal through the disturbance of the rotating induction blade on the magnetic field.
Furthermore, in the electronic water meter, a pivot part is concavely arranged below the bottom surface of the waterproof shell, a convex column is convexly arranged on the top surface of the induction blade, the convex column can be pivotally inserted in the pivot part, and the induction module does not have any rotating structure and rotates along with the impeller.
Furthermore, in the electronic water meter, a first pivot is convexly arranged below the bottom surface of the induction blade, a second pivot is convexly arranged above the bottom surface of the fluid module, and the impeller is pivotally clamped between the first pivot and the second pivot; the second pivot is inserted into the lower groove of the impeller, the first pivot is inserted into the upper groove of the impeller, the side surface of the first pivot is provided with a clamping unit, the top end of the upper groove is provided with a clamping groove, and the clamping unit is clamped in the clamping groove.
Furthermore, in the electronic water meter, the sensing circuit includes a first inductor, a first inductance converter, an analog-to-digital converter, a processing unit and a storage unit; the first inductance converter is connected with the first inductor and the analog-digital converter, the analog-digital converter is connected with the processing unit, the first inductor generates a magnetic field downwards, and the processing unit obtains fluid signals and flowing direction characteristics through the disturbance of the rotating induction blades on the magnetic field; the storage unit is connected with the processing unit and stores the reference value output to the processing unit.
In addition, in the electronic water meter, the sensing circuit further includes a second inductor and a second inductance converter, and the second inductance converter is connected to the second inductor and the analog-to-digital converter.
In addition, in the electronic water meter, the sensing circuit further includes a second inductor, a third inductor, a second inductance converter and a third inductance converter, the second inductance converter is connected to the second inductor and the analog-to-digital converter, and the third inductance converter is connected to the third inductor and the analog-to-digital converter.
Furthermore, in the electronic water meter, the induction circuit is locked on the plurality of heightening columns on the inner wall below the waterproof casing, and forms an accommodating space with the inner wall below the waterproof casing, and the induction circuit includes a first inductor, a second inductor and a third inductor which are annularly arranged and face downwards in the accommodating space.
Further, in the electronic water meter, a plurality of magnetic conductive units are arranged on the top surface of the induction blade in a radial or upward manner, the induction circuit obtains a characteristic mode of a fluid signal through the plurality of magnetic conductive units of the rotating induction blade, and the fluid signal includes a flow velocity and a flow rate of the fluid.
In addition, in the electronic water meter, the plurality of magnetic conductive units are arranged on the top surface of the induction blade in non-equidistant or non-equidistant heights to form a flow characteristic of the fluid flow, and the fluid signal further comprises a direction characteristic of the flow direction of the fluid.
Further, in the electronic water meter, each magnetic conductive unit is curved on the top surface of the induction blade, and each curved surface extends from the center of the induction blade to the periphery of the induction blade.
Further, in the electronic water meter, a raised circular platform is formed at the center of the top surface of the induction blade, a plurality of spiral slots with gradually descending height are formed on the periphery of the circular platform radially outwards, and one magnetic conductive unit is arranged on the periphery of each slot, which is adjacent to the top surface.
Further, in the electronic water meter, each magnetic conductive unit is a disk sheet, a fan-shaped sheet, an annular insert, a radial sheet or a rectangular sheet.
Furthermore, in the electronic water meter, the induction blade is cut into n parts, wherein m parts are made of magnetic materials; the other n-m parts are made of the same material and have no magnetic permeability; the relationship is 0< m < n, 2 ≦ n.
Furthermore, in the electronic water meter, the induction blade is cut into n parts, the area of each cut part is A + B, and the area A has magnetic conductivity; area B has no magnetic permeability; 2 ≦ n.
Further, in the electronic water meter, the induction blade is cut into n parts, wherein m parts of the magnetic conductivity material have a first plane height; the other n-m non-magnetically permeable materials have a second planar height; the relationship is 0< m < n, 2 ≦ n.
Furthermore, the electronic water meter further comprises a lower shell, the fluid module is accommodated in the lower shell, the fluid module further comprises a drainage carrying seat, the induction blade and the impeller are accommodated in the drainage carrying seat, the drainage carrying seat comprises a first drainage hole and a second drainage hole, and the first drainage hole is arranged below the second drainage hole; when fluid enters the lower shell from one end of the lower shell, the fluid firstly enters the fluid module through the first flow guiding hole, then after the fluid drives the impeller to rotate, the fluid leaves the fluid module through the second flow guiding hole, and the fluid leaves the lower shell from the other end of the lower shell.
Furthermore, in the electronic water meter, the sensing module further comprises a display control module and an upper cover; the display control module is configured on the sensing circuit and the battery and is fixed on the inner wall of the waterproof shell, and the display control module displays a fluid signal; the upper cover comprises an annular body and a transparent cover plate, and the periphery of the transparent cover plate is clamped between the annular body and the waterproof shell.
The invention has the beneficial effects that: when the electronic water meter is used, the induction circuit obtains fluid signals through the disturbance of the rotating induction blade to the magnetic field, and the waterproof shell isolates the fluid from contacting the induction circuit and the battery. The foregoing represents that the sensing circuit of the present invention wirelessly senses the sensing blade of the fluid module by a non-physical contact manner, and obtains the fluid signal by a wireless sensing manner, so that the present invention solves the technical problem of poor reliability of the obtained metering data due to gear wear or deformation in long-term use in the prior art. In addition, because the gear assembly does not exist between the sensing circuit and the fluid module, the resistance to the fluid cannot be caused, and the metering can be carried out under the condition of less water quantity. Furthermore, the electronic water meter of the invention can be matched with an antenna to have the function of remote monitoring or automatic recording meter reading. Therefore, the electronic water meter solves the technical problems in the prior art and achieves the purpose of improving reliability and sensitivity.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
Fig. 1 is an external view of an electronic water meter according to the present invention;
fig. 2A and 2B are schematic cross-sectional views illustrating an electronic water meter according to an embodiment of the present invention;
fig. 3 is an exploded view of the electronic water meter according to the present invention;
fig. 4 is an exploded view of the induction blade and impeller of the electronic water meter of the present invention;
fig. 5 is a schematic cross-sectional view of an electronic water meter according to another embodiment of the present invention;
fig. 6 is a schematic diagram of an inductor of the electronic water meter according to the other embodiment of the present invention;
fig. 7 is a schematic cross-sectional view of yet another embodiment of an electronic water meter in accordance with the present invention;
fig. 8 is a schematic diagram of a sensing circuit of an electronic water meter according to a first embodiment of the present invention;
fig. 9 is a schematic diagram of a sensing circuit of an electronic water meter according to a second embodiment of the present invention;
fig. 10 is a schematic diagram of a sensing circuit of an electronic water meter according to a third embodiment of the present invention; and
fig. 11 to 20 are schematic structural views of an induction blade of an electronic water meter according to the present invention.
Wherein, the reference numbers:
fluid module
2: induction module
3, lower casing
11. 11' induction blade
12. 12' impeller
13 drainage carrier seat
21 waterproof case
22, 22' induction circuit
23, battery
24 display control module
25, upper cover
31 fluid inlet
32 fluid outlet
34 flow regulating valve
100 waterproof gasket
111 convex column
112 first pivot
113 clamping and fixing unit
114 circular platform
115: wire groove
121 lower groove
122 upper groove
123: clamping groove
131 the first drainage hole
132 second drainage hole
133 second pivot
200 magnetic conductive unit
211 pivot joint part
212 antenna terminal
221 first inductor
221' second inductor
221' third inductor
222 first inductance converter
222' second inductor converter
222 ": third inductor converter
223 analog-to-digital converter
225 processing unit
226 storage unit
251 first annular body
252 second annular body
253 transparent cover plate
300 column block
S, S1-S8 region
Detailed Description
The following description of the embodiments of the present invention is provided by way of specific embodiments, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the description provided herein. The invention is capable of other and different embodiments and its several details are capable of modification and various changes in form and detail are capable of being made without departing from the spirit and scope of the invention.
It should be understood that the structures, ratios, sizes, and numbers of elements shown in the drawings and described in the specification are only used for understanding and reading the content provided by the specification, and are not used to limit the conditions and conditions under which the present invention can be implemented, so the present invention has no technical significance.
The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:
please refer to fig. 1 to 4. Fig. 1 is an appearance schematic diagram of an electronic water meter according to the present invention. Fig. 2A and 2B are schematic cross-sectional views of an electronic water meter according to the present invention. Fig. 3 is an exploded view of the electronic water meter according to the present invention. Fig. 4 is an exploded view of the induction blade and impeller of the electronic water meter according to the present invention. The electronic water meter of an embodiment of the present invention includes a fluid module 1, an induction module 2, and a lower housing 3. The lower housing 3 includes a fluid inlet 31 and a fluid outlet 32, and the fluid module 1 is accommodated in the lower housing 3. The fluid module 1 includes a sensing blade 11 and an impeller 12, the sensing blade 11 is pivoted on the impeller 12, and when the impeller 12 is rotated by a fluid (not shown), the impeller 12 drives the sensing blade 11 to rotate together. Further, the fluid module 1 further includes a flow guide holder 13, and the induction blade 11 and the impeller 12 are accommodated in the flow guide holder 13. The drainage carrier 13 includes a first drainage hole 131 and a second drainage hole 132, and the first drainage hole 131 is disposed below the second drainage hole 132. When fluid enters the lower housing 3 through the fluid inlet 31 of the lower housing 3, the fluid first enters the fluid module 1 through the first conduction holes 131. Then, after the fluid drives the impeller 12 to rotate, the fluid exits the fluid module 1 through the second flow guide hole 132, and the fluid exits the lower casing 3 through the fluid outlet 32 of the lower casing 3. In the embodiment of the present invention, a waterproof gasket (O-ring)100 is provided between the drainage carrier 13 and the lower housing 3, and the lower housing 3 is screwed with a flow regulating valve 34 to regulate the flow rate.
The sensing module 2 is disposed on the fluid module 1, and the sensing module 2 includes a waterproof case 21, a sensing circuit 22, and a battery 23. The battery 23 is connected to the sensing circuit 22, the waterproof case 21 is covered under the sensing circuit 22 and the battery 23 and isolates the fluid from contacting the sensing circuit 22 and the battery 23, the sensing blade 11 is pivotally disposed under the bottom surface of the waterproof case 21, the sensing circuit 22 may be a circuit board and includes a first inductor 221 which generates a magnetic field (not shown) downward, and the sensing circuit 22 obtains a characteristic pattern of a fluid signal (not shown) through the disturbance of the rotating sensing blade 11 to the magnetic field. In the embodiment of the present invention, the sensing module 2 further includes a display control module 24 and an upper cover 25. The display control module 24 is disposed on the sensing circuit 22 and the battery 23, and is fixed on the inner wall of the waterproof housing 21, and the display control module 24 displays the fluid signal. The upper housing 25 includes a first annular body 251, a second annular body 252, and a transparent cover plate 253. The second annular body 252 is disposed under the first annular body 251 and is screwed on the upper end of the waterproof housing 21. The periphery of the transparent cover 253 is pressed by the first annular body 251 and the second annular body 252 to be sandwiched between the second annular body 252 and the waterproof housing 21. The transparent cover plate 253 may be made of transparent materials such as glass or acryl. In the embodiment of the present invention, the lower half portion of the waterproof housing 21 is accommodated in the lower housing 3, and the waterproof gasket 100 is provided between the waterproof housing 21 and the lower housing 3. The upper cover 25 is screwed to the lower housing 3 by a plurality of screws, so that the waterproof housing 21 is sandwiched between the transparent cover 253 and the drainage mount 13.
Further, a pivot portion 211 is concavely disposed below the bottom surface of the waterproof housing 21, a convex pillar 111 is convexly disposed on the top surface of the sensing blade 11, and the convex pillar 111 is pivotally inserted into the pivot portion 211. A first pivot 112 is convexly disposed below the bottom surface of the sensing blade 11, a second pivot 133 is convexly disposed above the bottom surface of the flow-guiding carrier 13 located at the bottommost layer of the fluid module 1, and the impeller 12 is pivotally clamped between the first pivot 112 and the second pivot 133. The second pivot 133 is inserted into the lower groove 121 of the impeller 12, the first pivot 112 is inserted into the upper groove 122 of the impeller 12, the side surface of the first pivot 112 is formed with the fastening unit 113, the top end of the upper groove 122 is formed with the fastening groove 123, and the fastening unit 113 is fastened in the fastening groove 123. Therefore, the impeller 12 can rotate together with the induction blades 11. In the embodiment of the present invention, the antenna connector 212 is screwed on the side wall of the waterproof housing 21, and the antenna connector 212 is connected to the sensing circuit 22. The antenna joint 212 can be compatible with the specifications of axial cables such as SMA, SMB, TNC, N-type, M-type, BNC and MCX, and can be screwed with antennas such as Wi-Fi and LoRa.
Please refer to fig. 5 and 6. Fig. 5 is a schematic cross-sectional view of an electronic water meter according to another embodiment of the present invention, and fig. 6 is a schematic inductor view of the electronic water meter according to the another embodiment of the present invention. In another embodiment of the electronic water meter, the electronic water meter is substantially the same as the embodiment of the electronic water meter, but the sensing circuit 22 "is locked to the raised column 300 on the lower inner wall of the waterproof housing 21, and a receiving space for receiving the inductor is formed between the circuit board as the sensing circuit 22" and the lower inner wall of the waterproof housing 21, and the sensing circuit 22 "includes a first inductor 221, a second inductor 221 ', and a third inductor 221" (as shown in fig. 6, the first inductor 221, the second inductor 221', and the third inductor 221 "are annularly arranged and face downward in the receiving space. Fig. 7 is a cross-sectional view of another embodiment of the electronic water meter according to the present invention, which is substantially the same as the above-mentioned another embodiment, but the induction blade 11 'and the impeller 12' are integrally formed.
Please refer to fig. 8-10. Fig. 8 is a schematic configuration diagram of a sensing circuit of an electronic water meter according to a first embodiment of the present invention. Fig. 9 is a schematic configuration diagram of a sensing circuit of an electronic water meter according to a second embodiment of the present invention. Fig. 10 is a schematic diagram of a sensing circuit of an electronic water meter according to a third embodiment of the present invention.
As shown in fig. 8, in the first embodiment of the sensing circuit of the present invention, the sensing circuit 22 includes a first inductor 221, a first inductance converter 222, an analog-to-digital converter 223, a processing unit 225, and a storage unit 226. The first inductance converter 222 is connected to the first inductor 221 and the analog-to-digital converter 223, the analog-to-digital converter 223 is connected to the processing unit 225, the first inductor 221 generates a magnetic field (not shown) downwards, and the processing unit 225 obtains a fluid signal and a flow direction characteristic through the disturbance of the rotating induction blade 11 on the magnetic field. The storage unit 226 is connected to the processing unit 225, and stores a reference value (which may be a factory default value, not shown) outputted to the processing unit 225. The reference value is used to avoid wear and error of the impeller 12 or the induction blade 11 after long-term use, and provides the processing unit 225 to correct the outputted fluid information.
As shown in fig. 9, the second embodiment of the induction circuit of the present invention is substantially the same as the first embodiment, but the induction circuit 22 ' further includes a second inductor 221 ' and a second inductance converter 222 '. The second inductance converter 222 'is connected to the second inductor 221' and the analog-to-digital converter 223.
As shown in fig. 10, the third embodiment of the induction circuit of the present invention is substantially the same as the first embodiment, but the induction circuit 22 ″ further includes a second inductor 221 ', a third inductor 221 ″, a second inductance converter 222', and a third inductance converter 222 ″. The second inductance converter 222 'is connected to the second inductor 221' and the analog-to-digital converter 223, and the third inductance converter 222 "is connected to the third inductor 221" and the analog-to-digital converter 223.
The structure of the induction blade of the electronic water meter can be a first design method, wherein the induction blade can be cut into n parts, and m parts can be made of materials with magnetic conductivity; the other n-m parts are made of the same material and have no magnetic permeability; the relationship is 0< m < n, 2 ≦ n.
The structure of the induction blade of the electronic water meter can be a second design method, wherein the induction blade can be cut into n parts, the area of each cut part is A + B, and the area A has magnetic conductivity; area B has no magnetic permeability; 2 ≦ n.
The structure of the induction blade of the electronic water meter can be a third design method, wherein the induction blade can be cut into n parts, and the m parts of the magnetic conductivity materials can have a first plane height; the other n-m non-magnetically permeable materials have a second planar height; the relationship is 0< m < n, 2 ≦ n.
Fig. 11 to 20 are schematic structural views of an induction blade of an electronic water meter according to the present invention. A plurality of magnetic conductive units 200 are disposed radially or upward above the top surface of the induction blade 11, and the induction circuit 22 shown in fig. 2A obtains a fluid signal through the plurality of magnetic conductive units 200 of the rotating induction blade 11, where the fluid signal may include the flow speed and the flow rate of the fluid. Further, the plurality of magnetic conductive units 200 may be disposed on the top surface of the sensing blade 11 at non-equal distances or at non-equal heights, and when the non-equal distances or the non-equal heights are disposed in different directions, the interference to the magnetic field may vary in different time sequences (for example, if 1 represents that the sensing circuit 22 senses the disturbance of the magnetic conductive unit 200 to the magnetic field, and 0 represents that the sensing circuit 22 does not sense the disturbance of the magnetic conductive unit 200 to the magnetic field, the sensing circuit 22 may determine the direction of the direction change according to the disposition of the plurality of magnetic conductive units 200 on the sensing blade 11, for example, the 010011 cycle is forward direction, and the 110010 cycle is reverse direction), so the fluid signal may further include the directional characteristic of the flow direction of the fluid. The magnetic conductive units 200 may be a disk, a sector, a radial or a rectangular sheet, and may be made of materials that are easy to generate ferromagnetic (ferrimagnetic) or ferrimagnetic (ferrimagnetic) phenomena, such as iron, cobalt, nickel, and their compounds.
As shown in fig. 11, the top surface of the sensing blade 11 is a complete circle, each magnetic conductive unit 200 may be a sector-shaped piece and is disposed in the areas S2 and S4 of the top surface of the sensing blade 11, and the areas S1 and S3 do not have the magnetic conductive unit 200.
As shown in fig. 12, similar to fig. 8, the top surface of the sensing blade 11 is divided into a region S1 and a region S2, the area of the region S1 is larger than the region S2, and the magnetic conductive unit 200 is disposed only in the region S2.
As shown in fig. 13, similar to the aforementioned fig. 8, the top surface of the sensor blade 11 is divided into regions S1, S2, S3, S4 and S5, wherein the top surface areas of the regions S1, S2, S4 and S5 are the same, but the top surface area of the region S3 is smaller than the top surface areas of the regions S1, S2, S4 and S5.
As shown in fig. 14, the top surface of the sensing blade 11 is in a non-complete circle shape and has four fan-shaped regions S1, S2, S3, and S4 with the same area in a top view, the center of the sensing blade 11 has a circular region without the magnetic conductive unit 200, each magnetic conductive unit 200 can be a radial sheet, and the magnetic conductive units 200 with the same area in a top view are respectively arranged in each fan-shaped region.
As shown in fig. 15, the top surface of the induction blade 11 is in a star shape, and each protruding region S1, S2, S3, S4, S5, S6 of the star shape is rectangular (similar to a star engine shape), and the magnetic conductive unit 200 in a rectangular plate shape is disposed on each protruding region.
As shown in fig. 16, the top surface of the sensing blade 11 is a complete circle, the center of the sensing blade 11 has a circular area without the magnetic conductive unit 200, and each magnetic conductive unit 200 may be a radial sheet and is disposed in the areas S1, S2, S3, S4, S5, S6, S7, and S8 of the top surface of the sensing blade 11. Wherein the top view areas of the magnetic conductive units 200 in each region are different. Further, the magnetic conductive unit 200 is a curved surface on the top surface of the induction blade 11, and each curved surface extends from the center of the induction blade 11 to the periphery of the induction blade 11. When viewed from a vertical cross section of the induction blade 11 and the magnetic conductive unit 200, a height of a curved surface formed by each magnetic conductive unit 200 from the center of the induction blade 11 to the outside in radiation direction is changed as follows: the lowest point rises slowly to be the highest point, and then falls slowly from the highest point to be the lowest point, and finally a curved surface arched on the induction blade 11 is formed.
As shown in fig. 17, the induction blade 11 is an annular insert, the top surface of the induction blade 11 is annular, a cross-shaped portion is reserved in the center, and each magnetic conductive unit 200 is a disk body and is disposed in end edge regions S1, S2, S3, and S4 of the cross-shaped portion.
As shown in fig. 18, similar to fig. 14, but the top surface of the sensor blade 11 is a complete circle.
In fig. 19, similarly to the above-described fig. 12, there are 12 star-shaped protruding regions, and in fig. 16, two magnetic conductive elements 200 are respectively and symmetrically arranged with respect to both ends of the center of the induction blade 11, that is, the regions S1 and S2 correspond to the regions S3 and S4, and the protruding portion where the magnetic conductive elements 200 are arranged protrudes in the radial direction with respect to the other protruding portion, but the four magnetic conductive elements 200 are arranged at equal distances from each other.
As shown in fig. 20, a raised circular platform 114 is formed at the center of the top surface of the induction blade 11, and the periphery of the circular platform 114 is formed with a plurality of spiral and descending slots 115 (i.e. a plurality of areas S) radially outward, and each slot 115 is provided with one of the magnetic conductive units 200 adjacent to the periphery of the top surface. The magnetic conductive unit 200 may be a disk-shaped unit.
When the electronic water meter of the present invention is used, the sensing circuit 22 obtains a fluid signal through the disturbance of the rotating sensing blade 11 to the magnetic field, and the waterproof housing 21 isolates the fluid from contacting the sensing circuit 22 and the battery 23. The foregoing represents that the sensing circuit 22 of the present invention wirelessly senses the sensing blade 11 of the fluid module 1 by non-physical contact, and obtains the fluid signal by wireless sensing, so that the present invention solves the technical problem of poor reliability of the obtained metering data due to gear wear or deformation in long-term use in the prior art. In addition, since there is no gear assembly between the sensing circuit 22 and the fluid module 1, the present invention does not cause resistance to the fluid and can also measure the amount of water with a small amount of water. Furthermore, the electronic water meter of the invention can be matched with an antenna to have the function of remote monitoring or automatic recording meter reading. Therefore, the electronic water meter solves the technical problems in the prior art and achieves the purpose of improving reliability and sensitivity.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (17)
1. An electronic water meter, comprising:
the fluid module comprises an induction blade and an impeller, wherein the induction blade is connected to the impeller and is driven to rotate by the change of the flow momentum of a fluid when the impeller is subjected to the change of the flow momentum of the fluid; and
the induction module is configured on the fluid module and forms an independent closed space, comprises a waterproof shell, an induction circuit and a battery and is isolated from the closed space formed by the fluid module; wherein, the battery is connected with the induction circuit; the waterproof shell is wrapped under the sensing circuit and the battery and isolates the fluid from contacting the sensing circuit and the battery; the induction blade is pivotally arranged below the bottom surface of the waterproof shell; the induction circuit generates a magnetic field downwards, and a fluid signal is obtained by the induction circuit through the disturbance of the rotating induction blade on the magnetic field;
wherein, a pivoting part is concavely arranged below the bottom surface of the waterproof shell, a convex column is convexly arranged on the top surface of the induction blade, the convex column is pivotally inserted in the pivoting part, and the induction module does not have any rotating structure and rotates along with the impeller;
wherein, a second pivot is convexly arranged on the bottom surface of the fluid module and inserted into a lower groove of the impeller.
2. The electronic water meter as claimed in claim 1, wherein a first pivot is protruded from a lower side of the bottom surface of the induction blade, the impeller is pivotally clamped between the first pivot and the second pivot, the first pivot is inserted into an upper groove of the impeller, a fastening unit is formed on a side surface of the first pivot, a fastening groove is formed at a top end of the upper groove, and the fastening unit is fastened in the fastening groove.
3. The electronic water meter of claim 1, wherein the sensing circuit includes a first inductor, a first inductance converter, an analog-to-digital converter, a processing unit, and a storage unit; the first inductance converter is connected with the first inductor and the analog-digital converter, the analog-digital converter is connected with the processing unit, the first inductor downwards generates the magnetic field, and the processing unit obtains the fluid signal and the flowing direction characteristic through the disturbance of the rotating induction blade to the magnetic field; the storage unit is connected with the processing unit and stores a reference value output to the processing unit.
4. The electronic water meter of claim 3, wherein the induction circuit further includes a second inductor and a second inductance converter; the second inductance converter is connected with the second inductor and the analog-digital converter.
5. The electronic water meter of claim 3, wherein the induction circuit further includes a second inductor, a third inductor, a second inductance converter, and a third inductance converter; the second inductance converter is connected with the second inductor and the analog-to-digital converter, and the third inductance converter is connected with the third inductor and the analog-to-digital converter.
6. The electronic water meter as claimed in claim 5, wherein the sensing circuit is locked to the plurality of raised columns on the lower inner wall of the waterproof housing, and forms a receiving space with the lower inner wall of the waterproof housing, and the sensing circuit includes the first inductor, the second inductor and the third inductor in the receiving space, which are annularly arranged and face downward.
7. The electronic water meter as claimed in claim 1, wherein a plurality of magnetic conductive elements are disposed radially or upwardly on a top surface of the induction blade, the induction circuit obtains a characteristic pattern of the fluid signal including a flow velocity and a flow rate of the fluid through the plurality of magnetic conductive elements of the rotating induction blade.
8. The electronic water meter as recited in claim 7, wherein said plurality of magnetic conductive elements are disposed on said top surface of said induction blade at non-equal distances or at non-equal heights to form a flow characteristic of said fluid flow, said fluid signal further comprising a directional characteristic of a flow direction of said fluid.
9. The electronic water meter as recited in claim 7, wherein each of said magnetic conductive elements is curved at said top surface of said sensor blade, and each of said curved surfaces extends from a center of said sensor blade toward a periphery of said sensor blade.
10. The electronic water meter of claim 7, wherein a raised circular platform is formed at the center of the top surface of the induction blade, and the periphery of the circular platform is radially outward formed with a plurality of spiral slots with gradually decreasing height, and one of the magnetic conductive units is disposed at the periphery of each slot adjacent to the top surface.
11. The electronic water meter according to claim 7, wherein each of the magnetic conductive units is a disk, a sector, an annular insert, a radial or a rectangular plate.
12. The electronic water meter of claim 1, wherein the sensor blade is cut into n sections, wherein m sections are magnetically permeable; the other n-m parts are made of the same material and have no magnetic permeability; the relationship is 0< m < n, 2 ≦ n.
13. The electronic water meter of claim 1, wherein the sensor blade is cut into n sections, each cut section having an area a + B, wherein area a has magnetic permeability; area B has no magnetic permeability; 2 ≦ n.
14. The electronic water meter of claim 1, wherein the sensor blade is cut into n sections, wherein m sections of magnetically permeable material have a first planar height; the other n-m non-magnetically permeable materials have a second planar height; the relationship is 0< m < n, 2 ≦ n.
15. The electronic water meter as recited in claim 1, wherein an antenna connector is screwed to a side wall of the waterproof housing, and the antenna connector is connected to the sensing circuit.
16. The electronic water meter of claim 1, further comprising a lower housing, the fluid module being received in the lower housing, the fluid module further comprising a flow-directing carrier, the induction blade and the impeller being received in the flow-directing carrier, the flow-directing carrier comprising a first flow-directing aperture and a second flow-directing aperture, the first flow-directing aperture being disposed below the second flow-directing aperture; when the fluid enters the lower shell from one end of the lower shell, the fluid firstly enters the fluid module through the first drainage hole, then, after the fluid drives the impeller to rotate, the fluid leaves the fluid module through the second drainage hole, and the fluid leaves the lower shell from the other end of the lower shell.
17. The electronic water meter of claim 1, wherein the sensing module further comprises a display control module and an upper housing; the display control module is configured on the sensing circuit and the battery and fixed on the inner wall of the waterproof shell, and the display control module displays the fluid signal; the upper cover comprises an annular body and a transparent cover plate, and the periphery of the transparent cover plate is clamped between the annular body and the waterproof shell.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010585039.XA CN113834538A (en) | 2020-06-24 | 2020-06-24 | Electronic water meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010585039.XA CN113834538A (en) | 2020-06-24 | 2020-06-24 | Electronic water meter |
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| CN113834538A true CN113834538A (en) | 2021-12-24 |
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| TWM311878U (en) * | 2006-11-21 | 2007-05-11 | Kuen-Huang Hwang | Assembly structure for electronic flow rate gauge |
| CN101871801A (en) * | 2010-06-01 | 2010-10-27 | 王建国 | Intelligent flow meter adopting TMR (Tele Meter Reading) magnetic sensor |
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