CN209945434U - Induction type non-magnetic remote water meter - Google Patents
Induction type non-magnetic remote water meter Download PDFInfo
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- CN209945434U CN209945434U CN201822153969.9U CN201822153969U CN209945434U CN 209945434 U CN209945434 U CN 209945434U CN 201822153969 U CN201822153969 U CN 201822153969U CN 209945434 U CN209945434 U CN 209945434U
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Abstract
The utility model relates to an induction type non-magnetic remote water meter, which comprises a base meter and a signal processing device arranged on the surface glass of the base meter, wherein the signal processing device comprises a signal acquisition sensing coil and a signal processing circuit; the signal acquisition sensing coil comprises an external inductance coil and 4 internal inductance coils which are arranged in the external inductance coil in a cross quadrant manner; the stainless steel sheet is arranged on the base meter corresponding to the position of the signal acquisition sensing coil, the stainless steel sheet is 8-shaped, and the 8-shaped stainless steel sheet rotates along with the rotating shaft of the base meter and shields the internal inductance coils in an opposite angle manner so as to change the magnetic flux of each internal inductance coil; the signal processing circuit continuously samples and processes the internal inductance coil. The utility model discloses a water gauge is inside to be free of magnetic components such as permanent magnet, and it is little influenced by inside and outside magnetic force, and detection distance is far away and measure accurately.
Description
Technical Field
The utility model relates to a water gauge, especially an anti strong magnetic interference's induction type does not have magnetism teletransmission water gauge.
Background
In the prior art, the metering mode of the remote water meter has two types: pulse measurement and photoelectric sensing. The pulse counting type remote water meter adopts the principle of no magnetic induction to convert the rotation of a mechanical meter gear or the rotation of a pointer into an electric pulse signal.
Chinese patent CN201020049396.6 discloses an intelligent water meter device capable of resisting strong magnetism and chinese patent CN201420357838.1 discloses a large pointer up-sampling separation non-magnetic remote water meter; in the two water meters, the semicircular diamagnetic stainless steel sheet is arranged on the impeller of the water meter, and the selected installation direction and the rotation period of the stainless steel sheet are judged by using the damping waveform and the undamped waveform generated by the two inductors when the stainless steel sheet rotates forwards and backwards and rotates to different positions relative to the inductor I and the inductor II, so that the water meter is counted. However, the problems with this are: when external strong magnetic interference exists, the damping waveforms received by the first inductor and the second inductor are greatly influenced, so that counting errors and errors occur.
Chinese patent CN107024252 discloses a non-magnetic remote water meter with strong magnetic interference resistance, which adopts three coils wound in an equilateral triangle distribution to solve the above problems; the detection precision and effect are improved, but the detection distance is limited and is less than 6mm, so that the sampling detection mode cannot be directly applied to the surface glass of the traditional wet water meter.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the induction type non-magnetic remote water meter does not contain magnetic components such as permanent magnets inside, is slightly influenced by internal and external magnetic force, and is long in detection distance and accurate in measurement.
The utility model discloses the technical scheme who adopts does: an induction type non-magnetic remote water meter comprises a base meter and a signal processing device arranged on the surface glass of the base meter, wherein the signal processing device comprises a signal acquisition sensing coil and a signal processing circuit; the signal acquisition sensing coil comprises an external inductance coil and 4 internal inductance coils which are arranged in the external inductance coil in a cross quadrant manner; the stainless steel sheet is arranged on the base meter corresponding to the position of the signal acquisition sensing coil, the stainless steel sheet is 8-shaped, and the 8-shaped stainless steel sheet rotates along with the rotating shaft of the base meter and shields the internal inductance coils in an opposite angle manner so as to change the magnetic flux of each internal inductance coil; the signal processing circuit continuously samples and processes the internal inductance coil.
Further say, in order to improve the integrated level, reduce product volume and product installation space, outside inductance coils and the integrated setting of inside inductance coils on the circuit board, the coil that adopts the circuit board to make, the inductance value is unanimous basically, can avoid the influence because of the quality difference of sensor brings on every water gauge hardware. In the wiring mode, the internal inductance coils of the first quadrant and the second quadrant form a group of outputs, and the internal inductance coils of the third quadrant and the fourth quadrant form another group of outputs.
Still further, the signal processing circuit of the present invention includes an amplifier unit and a comparator unit; the internal inductance coils of the first, second, third and fourth quadrants are respectively connected to the amplifier unit and respectively output amplified signals V1, V2, V3 and V4; v1 and V3 are respectively connected with one input end of the comparator unit, V2 and V4 are respectively connected with the other input end of the comparator unit, and two groups of outputs are connected in parallel to share one comparator unit.
Still further say, the utility model discloses an "8" font stainless steel sheet snap-on in basic table pivot, the bottom need not increase in addition and supports.
Furthermore, the 8-shaped stainless steel sheet of the utility model and the rotating shaft of any red pointer on the base watch synchronously rotate; in order to meet the volume requirement of the water meter and ensure that the installation is more reasonable, the 8-shaped stainless steel sheet is arranged on one side of the red pointer which represents the minimum metering unit in all the red pointers of the base meter; a rotating shaft connected with the 8-shaped stainless steel sheet is meshed with a rotating shaft of a red pointer of the minimum metering unit through a gear; the rotating speed of the 8-shaped stainless steel sheet is the same as that of the red pointer of the minimum metering unit.
Still further, the signal acquisition sensing coil of the utility model has a detection gap with the 8-shaped stainless steel sheet; the detection gap is more than or equal to 10mm, so that the surface glass of the wet water meter is not damaged.
Still further say, in order to prevent the interference of outside magnetic force, signal acquisition sensing coil's upper surface be provided with the shielding layer of anti outside strong magnetic interference.
Still further say, for better improvement measurement accuracy, "8" font stainless steel sheet length direction on the diameter be greater than or equal to outside inductance coils's inner circle diameter.
The utility model has the advantages that:
1. the utility model does not need to destroy the structure of the existing wet water meter, only needs to install the 8-shaped stainless steel sheet on the existing wet water meter, does not need to destroy the surface glass of the wet water meter during the collection, and can accurately collect data only by directly placing the collection device on the surface glass of the wet water meter;
2. the utility model integrates the inductance coil on the circuit board, thereby avoiding the defect that the consistency of the inductance of the common winding coil can not be ensured, and the limitation that the detection distance of the common winding coil is less than or equal to 6mm, thereby greatly improving the signal detection precision;
3. the utility model discloses a water gauge is inside to be free of magnetic components such as permanent magnet, and it is little influenced by inside and outside magnetic force, measures accurately.
Drawings
Fig. 1 is a schematic view of the overall structure of the water meter of the present invention;
FIG. 2 is a schematic diagram of the structure of the base table of the present invention;
fig. 3 is a schematic block circuit diagram of the signal processing apparatus of the present invention;
FIG. 4 is a schematic diagram of the relative positions of the coil and the stainless steel sheet according to the present invention;
FIG. 5 is a schematic view of the working principle of the present invention;
FIGS. 6(a) - (b) are graphs showing the position change of T0, T1 corresponding to the stainless steel sheet;
in the figure: 1. 2, 3, 4, an internal inductance coil; 5. an external inductor coil; 6. a base table; 7. a signal processing device; 8. a stainless steel sheet; 9. a red pointer.
Detailed Description
The invention will now be described in further detail with reference to the drawings and preferred embodiments. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1-4, the induction type non-magnetic remote water meter comprises a base meter 6 and a signal processing device 7 arranged above the surface glass of the base meter 6, wherein the signal processing device 7 comprises a signal acquisition sensing coil and a signal processing circuit.
The signal acquisition sensing coil comprises an external inductance coil 5 and 4 internal inductance coils 1, 2, 3 and 4 which are arranged in the external inductance coil in a cross quadrant manner, and an 8-shaped stainless steel sheet 8 is arranged on the base table 6 corresponding to the signal acquisition sensing coil, as shown in fig. 4.
The 8-shaped stainless steel sheet 8 can be formed by symmetrically arranging two fan-shaped centers; by adopting the structure, the 8-shaped stainless steel sheet 8 can be directly fixed on the rotating shaft of the base table 6, no additional support is needed at the bottom, and the stainless steel sheet 8 can ensure the stability during rotation. The center of the 8-shaped stainless steel sheet 8, the central axis of the rotating shaft and the central axis of the external inductance coil are all superposed; in order to improve the metering precision better, the diameter of the 8-shaped stainless steel sheet in the length direction is larger than or equal to the diameter of the inner ring of the external inductance coil.
The central axes of the five groups of inductance coils 1, 2, 3, 4 and 5 are all arranged in parallel, in order to improve the integration level and reduce the product volume and the product installation space, the external inductance coil 5 and the internal inductance coils 1, 2, 3 and 4 are arranged on the circuit board in an integrated manner, the coils made of the circuit board are adopted, the inductance is basically consistent, and the influence caused by the quality difference of the sensors on each piece of water meter hardware can be avoided. And the inductor made of four coils is adopted for acquisition, so that the positioning is more accurate, and the error caused by the shaking of the impeller in the time-base meter due to the impact of the rapid current is avoided. The four-coil inductor has a large area and a wide acquisition range, and can effectively process two-inductor critical points. Particularly, when the flow is small, the four inductors have the advantages of being prominent, basically free of errors, capable of measuring data quantity at each angle, conducting data analysis and avoiding the probability of errors.
In order to not damage the surface glass of the wet water meter, a detection gap is formed between the signal acquisition sensing coil and the 8-shaped stainless steel sheet; the detection gap is greater than or equal to 10 mm.
As shown in fig. 3, the signal processing circuit includes an amplifier unit, a single chip, a driving circuit I and a driving circuit II, in this embodiment, the amplifier unit is a semiconductor basic device, such as a triode, and the amplifier unit includes an amplifier 1 and an amplifier 2; the timer unit and the voltage comparator unit are integrated in the single chip microcomputer, and according to other embodiments, the comparator unit can also be an independent module. Since the specific circuit structure and connection manner of the amplifier unit, the single chip microcomputer, and the driving circuit I, II are not what this scheme is intended to protect, they are not described here.
The external inductance coil 5 is connected with the driving circuit I, one ends of the internal inductance coils 1 and 2 are respectively connected with the amplifier 1 and output amplified signals V1 and V2 through the amplifier 1, and one ends of the internal inductance coils 3 and 4 are respectively connected with the amplifier 2 and output amplified signals V3 and V4 through the amplifier 2; the other ends of the internal inductance coils 1, 2, 3 and 4 are connected together; then V1, V3 are connected to one input of the comparator, respectively, and V2, V4 are connected to the other input of the comparator, respectively, as shown in FIG. 5.
As shown in fig. 2, the 8-shaped stainless steel sheet rotates along with the rotating shaft of the base meter and shields the internal inductance coils in a diagonal manner so as to change the magnetic flux of each internal inductance coil; in order to meet the volume requirement of the water meter and ensure that the installation is more reasonable, the 8-shaped stainless steelThe slice is arranged on one side of the red pointer which represents the minimum measurement unit in all the red pointers of the base table; a rotating shaft connected with the 8-shaped stainless steel sheet is meshed with a rotating shaft of a red pointer of the minimum metering unit through a gear; the rotating speed of the 8-shaped stainless steel sheet is the same as that of the red pointer of the minimum metering unit. The measurement units of the red pointer from left to right are respectively: 0.0001m3、0.001m3、0.01m3、0.1m3(ii) a Represents 0.0001m3The upper left corner of the red pointer is provided with an 8-shaped stainless steel sheet; the rotating shaft connected with the 8-shaped stainless steel sheet is meshed with a gear to represent 0.0001m3The rotating shaft of the red pointer; stainless steel sheet of the shape of "8" and 0.0001m3The red pointer has the same rotating speed, namely the number of turns of the stainless steel sheet in the shape of the '8' is equal to 0.0001m3The red pointer of (2) rotates for equal turns. The connection mode of the 8-shaped stainless steel sheet and the rotating shaft, the connection mode of the red pointer and the rotating shaft, and the engagement mode of the rotating shaft and the rotating shaft through the gear are the prior art, and are not described here.
When the steel sheet rotates along with water flow, the steel sheet sequentially passes through the four inductance coils 1, 2, 3 and 4 in a diagonal manner, and the amplifier 1 or the amplifier 2 is alternately selected to work under the control of the single chip microcomputer.
Setting the steel sheet as the initial position when the steel sheet is positioned at the position of the coil 1 and the coil 3, wherein the coil 1 is shielded by the stainless steel sheet, so that the magnetic flux passing through the coil 1 is smaller than the magnetic flux of the coil 2, the current generated on the coil 2 is larger than that of the coil 1, the singlechip selects the amplifier 1 to work, the coil 1 and the coil 2 output voltages V1 and V2 to the comparator through the amplifier, and V1 is smaller than V2; due to the charging and discharging capacity, due to different voltages, the charging and discharging time is different, so that the coil 1 and the coil 2 generate a charging and discharging time difference T0, and similarly, the other path of amplifier 2 is turned on, and compared with the coil 3 and the coil 4, the coil 3 and the coil 4 generate a charging and discharging time difference T1. The curve is drawn according to the changes of T0 and T1, the position of the stainless steel sheet can be determined, and the turning direction of the stainless steel sheet can be judged according to the direction of the wave form of the curve. T0, T1 curve change a cycle, note stainless steel sheet make a turn. The positions of T0 and T1 corresponding to the stainless steel sheets are shown in FIG. 6.
In the embodiment, a group of comparators are used for comparison, and according to other embodiments, AD voltages of two coils can be collected, the output voltages of the other two coils are connected to one comparator, and the comparison is performed through internal calculation of a single chip microcomputer, so that T0 and T1 are calculated.
In order to prevent the interference of external magnetic force, the upper surface of the signal acquisition sensing coil is provided with a shielding layer. This embodiment is not shown in the drawings due to the view perspective.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (8)
1. The utility model provides an induction type does not have magnetism teletransmission water gauge, includes base table and sets up the signal processing device on base table surface glass which characterized in that: the signal processing device comprises a signal acquisition sensing coil and a signal processing circuit; the signal acquisition sensing coil comprises an external inductance coil and 4 internal inductance coils which are arranged in the external inductance coil in a cross quadrant manner; the stainless steel sheet is arranged on the base meter corresponding to the position of the signal acquisition sensing coil, the stainless steel sheet is 8-shaped, and the 8-shaped stainless steel sheet rotates along with the rotating shaft of the base meter and shields the internal inductance coils in an opposite angle manner so as to change the magnetic flux of each internal inductance coil; the 8-shaped stainless steel sheet is directly fixed on the rotating shaft of the base table; the signal processing circuit continuously samples and processes the internal inductance coil.
2. An induction type non-magnetic remote water meter as defined in claim 1, wherein: the external inductance coil and the internal inductance coil are integrated on the circuit board, the internal inductance coils of the first quadrant and the second quadrant form one group of output, and the internal inductance coils of the third quadrant and the fourth quadrant form the other group of output.
3. An induction type non-magnetic remote water meter as defined in claim 1, wherein: the signal processing circuit comprises an amplifier unit and a comparator unit; the internal inductance coils of the first, second, third and fourth quadrants are respectively connected to the amplifier unit and respectively output amplified signals V1, V2, V3 and V4, the V1 and V3 are respectively connected to one input end of the comparator unit, and the V2 and V4 are respectively connected to the other input end of the comparator unit.
4. An induction type non-magnetic remote water meter as defined in claim 1, wherein: the 8-shaped stainless steel sheet and the rotating shaft of any red pointer on the base watch synchronously rotate.
5. An induction type non-magnetic remote water meter as defined in claim 4, wherein: the 8-shaped stainless steel sheet is arranged on one side of the red pointer which represents the minimum measurement unit in all red pointers of the base table; a rotating shaft connected with the 8-shaped stainless steel sheet is meshed with a rotating shaft of a red pointer of the minimum metering unit through a gear; the rotating speed of the 8-shaped stainless steel sheet is the same as that of the red pointer of the minimum metering unit.
6. An induction type non-magnetic remote water meter as defined in claim 1, wherein: a detection gap is formed between the signal acquisition sensing coil and the 8-shaped stainless steel sheet; the detection gap is more than or equal to 10 mm.
7. An induction type non-magnetic remote water meter as defined in claim 1, wherein: and the upper surface of the signal acquisition sensing coil is provided with a shielding layer for resisting external strong magnetic interference.
8. An induction type non-magnetic remote water meter as defined in claim 1, wherein: the diameter of the 8-shaped stainless steel sheet in the length direction is larger than or equal to the diameter of the inner ring of the external inductance coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822153969.9U CN209945434U (en) | 2018-12-20 | 2018-12-20 | Induction type non-magnetic remote water meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822153969.9U CN209945434U (en) | 2018-12-20 | 2018-12-20 | Induction type non-magnetic remote water meter |
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| Publication Number | Publication Date |
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| CN209945434U true CN209945434U (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822153969.9U Active CN209945434U (en) | 2018-12-20 | 2018-12-20 | Induction type non-magnetic remote water meter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109506726A (en) * | 2018-12-20 | 2019-03-22 | 江苏远传智能科技有限公司 | Induction type is without magnetic remote transmitting water meter |
| CN112577561A (en) * | 2020-12-31 | 2021-03-30 | 郑州力通水务有限公司 | Novel remote water meter based on Internet of things |
-
2018
- 2018-12-20 CN CN201822153969.9U patent/CN209945434U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109506726A (en) * | 2018-12-20 | 2019-03-22 | 江苏远传智能科技有限公司 | Induction type is without magnetic remote transmitting water meter |
| CN112577561A (en) * | 2020-12-31 | 2021-03-30 | 郑州力通水务有限公司 | Novel remote water meter based on Internet of things |
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