CN112729438A - Water flow direction detection device and method in water meter - Google Patents
Water flow direction detection device and method in water meter Download PDFInfo
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- CN112729438A CN112729438A CN202011533211.3A CN202011533211A CN112729438A CN 112729438 A CN112729438 A CN 112729438A CN 202011533211 A CN202011533211 A CN 202011533211A CN 112729438 A CN112729438 A CN 112729438A
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- 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
- G01F15/007—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 comprising means to prevent fraud
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/02—Indicating direction only, e.g. by weather vane
- G01P13/04—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement
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Abstract
The invention discloses a device and a method for detecting the water flow direction in a water meter, which can accurately and timely detect the water flow direction in the water meter. According to the detection device, a first disc and a second disc are both connected with a rotary metering mechanism of a water meter, and both the first disc and the second disc are sleeved on a rotating shaft and can rotate around the rotating shaft; the first disc comprises a second sub disc, a fourth sub disc and a sixth sub disc which are not mutually connected; the second disc comprises a first sub disc, a third sub disc and a fifth sub disc which are not mutually connected; the first disc and the second disc are arranged in a staggered manner; the metal detection piece is fixedly connected with the rotating shaft and is positioned above the second disc, and the metal detection piece is electrically connected with the processor. When the first sub-disc, the third sub-disc or the fifth sub-disc rotates to the position below the metal detection piece, the metal detection piece sends a detection signal to the processor. The processor judges and obtains the rotation direction of the second disc according to the sequence of the received detection signals, thereby obtaining the water flow direction.
Description
Technical Field
The invention relates to the technical field of water meters, in particular to a device and a method for detecting the water flow direction in a water meter.
Background
A water meter is an instrument for measuring water flow. A rotary metering mechanism is arranged in the water meter, and water flow drives the rotary metering mechanism to rotate, so that water flow measurement is realized. The rotary metering mechanism mainly comprises a main transmission shaft and a plurality of gears meshed with each other. Under normal conditions, the water flow flows in the positive direction, the rotating metering mechanism in the water meter rotates in the positive direction, and the water flow is metered correctly. However, sometimes the water in the pipeline flows backwards, which causes the rotating metering mechanism in the water meter to rotate reversely, and causes a huge error in metering of the water meter. The water meter is reversed and is not easy to be found for a long time, and a way is provided for water charge due to water stealing and leakage.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the device and the method for detecting the water flow direction in the water meter can accurately and timely detect the water flow direction in the water meter.
In order to solve the above technical problem, in one aspect, an embodiment of the present invention provides a device for detecting a water flow direction in a water meter, including a rotating shaft, a first disk, a second disk, a metal detecting element and a processor, where the first disk and the second disk (3) are both connected to a rotating metering mechanism of the water meter, the first disk and the second disk are both sleeved on the rotating shaft and can rotate around the rotating shaft, and the first disk is located above the second disk; the first disc comprises a second sub-disc, a fourth sub-disc and a sixth sub-disc which are sequentially arranged along the circumferential direction in a clockwise mode and are not connected with each other, and the second sub-disc, the fourth sub-disc and the sixth sub-disc are made of non-metal materials; the second disc comprises a first sub-disc, a third sub-disc and a fifth sub-disc which are sequentially arranged along the circumferential direction in a clockwise mode and are not connected with each other, and the first sub-disc, the third sub-disc and the fifth sub-disc are made of metal materials; the first disc and the second disc are arranged in a staggered manner; the metal detection piece is fixedly connected with the rotating shaft and is positioned above the second disc, and the metal detection piece is electrically connected with the processor; the metal detection piece is used for sending a detection signal to the processor when detecting the first sub-disc, the third sub-disc or the fifth sub-disc.
As a further improvement of the embodiment of the present invention, the metal detection member includes a bracket, a magnet, a spring, and a pressure sensor, the bracket is fixedly connected to the rotating shaft, and the magnet is fixedly disposed on the bracket; the top end of the spring is connected with the bracket, and the bottom end of the spring is positioned above the second disc; the pressure sensor is arranged at the joint of the spring and the support and is electrically connected with the processor.
As a further improvement of the embodiment of the present invention, the areas of the first sub-disc, the third sub-disc and the fifth sub-disc are not equal to each other.
As a further improvement of the embodiment of the present invention, the area of the first sub-disc, the area of the third sub-disc, and the area of the fifth sub-disc are sequentially increased.
As a further improvement of the embodiment of the present invention, two sides of the lower surfaces of the second, fourth and sixth sub-discs are provided with dovetail grooves, and two sides of the upper surfaces of the first, third and fourth sub-discs are provided with projections which are matched with the dovetail grooves.
On the other hand, the embodiment of the invention also provides a water flow direction detection method in the water meter, and the water flow direction detection device in the water meter is adopted, and the method comprises the following steps:
step 1) the first disc and the second disc synchronously rotate under the driving of a rotating metering mechanism of the water meter;
step 2) when the first sub-disc, the third sub-disc or the fifth sub-disc of the second disc rotates to the position below the metal detection piece, the metal detection piece sends a detection signal to the processor; when the second sub-disc, the fourth sub-disc or the sixth sub-disc of the first disc rotates to the position below the metal detection piece, the metal detection piece stops sending a detection signal to the processor;
step 3) the processor judges the rotation direction of the second disc according to the sequence of the received detection signals;
and 4) obtaining the water flow direction according to the relation between the preset rotation direction of the second disc and the water flow direction.
As a further improvement of the embodiment of the present invention, the step 2) specifically includes:
when the first sub-disc, the third sub-disc or the fifth sub-disc of the second disc rotates to the position below the metal detection piece, the first sub-disc, the third sub-disc or the fifth sub-disc is attracted by the magnet to move upwards, the upper surface of the first sub-disc, the third sub-disc or the fifth sub-disc abuts against the bottom end of the spring and extrudes the spring upwards to enable the spring to deform, and the pressure sensor positioned at the top end of the spring sends a detection signal to the processor after being subjected to pressure;
when the second sub-disc, the fourth sub-disc or the sixth sub-disc of the first disc rotates to the position below the metal detection piece, the first sub-disc, the third sub-disc or the fifth sub-disc does not move downwards under the attraction of the magnet, the spring recovers deformation, and the pressure sensor stops sending a detection signal to the processor after being not pressed.
As a further improvement of the embodiment of the present invention, the step 3) specifically includes:
the processor judges that the rotating direction of the second disc rotates anticlockwise if the duration of the received detection signals is increased in sequence in a cycle according to the sequence of the received detection signals; if the duration of the received detection signal is sequentially decreased in one cycle, it is determined that the rotation direction of the second disk is clockwise rotation.
As a further improvement of the embodiment of the present invention, the method further includes:
and 4) judging to obtain the water flow speed by the processor according to the time interval of the received detection signals with the same time length.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects: the embodiment of the invention provides a device and a method for detecting the water flow direction in a water meter. The second disc comprises a first sub disc, a third sub disc and a fifth sub disc which are sequentially arranged along the circumferential direction and are not mutually connected, and when the first sub disc, the third sub disc or the fifth sub disc rotate to the position below the metal detection piece, the metal detection piece sends a detection signal to the processor. The processor judges the rotation direction of the second disk according to the sequence of the received detection signals, and obtains the water flow direction according to the relation between the preset rotation direction of the second disk and the water flow direction. The device and the method for detecting the water flow direction in the water meter can accurately and timely detect the water flow direction in the water meter.
Drawings
Fig. 1 is a schematic structural diagram of a water meter steering test device according to an embodiment of the invention.
The figure shows that: the device comprises a rotating shaft 1, a first disk 2, a first sub-disk 21, a third sub-disk 22, a fifth sub-disk 23, a second disk 3, a second sub-disk 31, a fourth sub-disk 32, a sixth sub-disk 33, a bracket 41, a magnet 42, a spring 43 and a pressure sensor 44.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.
The embodiment of the invention provides a water flow direction detection device in a water meter, which comprises a rotating shaft 1, a first disc 2, a second disc 3, a metal detection piece and a processor, as shown in figure 1. The first disc 2 and the second disc 3 are both connected with a rotating metering mechanism of the water meter, the first disc 2 and the second disc 3 are both sleeved on the rotating shaft 1 and can rotate around the rotating shaft 1, and the first disc 2 is positioned above the second disc 3. The first disc 2 comprises a second sub-disc 21, a fourth sub-disc 22 and a sixth sub-disc 23 which are sequentially arranged in a clockwise mode along the circumferential direction and are not connected with each other, and the second sub-disc 21, the fourth sub-disc 22 and the sixth sub-disc 23 are all fan-shaped and made of non-metal materials. The second disc 3 comprises a first sub-disc 31, a third sub-disc 32 and a fifth sub-disc 33 which are sequentially arranged in a clockwise mode along the circumferential direction and are not connected with each other, and the first sub-disc 31, the third sub-disc 32 and the fifth sub-disc 33 are all fan-shaped and are made of metal materials. The first disk 2 and the second disk 3 are arranged in a staggered manner, the first sub-disk 31 is positioned below the sixth sub-disk 23 and the second sub-disk 21, the third sub-disk 32 is positioned below the second sub-disk 21 and the fourth sub-disk 22, and the fifth sub-disk 33 is positioned below the fourth sub-disk 22 and the sixth sub-disk 23. The metal detection piece is fixedly connected with the rotating shaft 1 and is positioned above the second disc 3, and the metal detection piece is electrically connected with the processor. The metal detection part is used for sending a detection signal to the processor when detecting the first subdisc 31, the third subdisc 32 or the fifth subdisc 33.
In the water flow direction detection device in the water meter according to the embodiment, the first disk 2 and the second disk 3 which are arranged in a staggered manner from top to bottom are driven by the rotation metering mechanism of the water meter to rotate around the rotating shaft 1, and the metal detection piece fixed on the rotating shaft 1 is used for detecting the second disk 3. The second disc 3 comprises a first sub-disc 31, a third sub-disc 32 and a fifth sub-disc 33 which are sequentially arranged in a clockwise mode along the circumferential direction and are not connected with each other, when the first sub-disc 31, the third sub-disc 32 or the fifth sub-disc 33 rotates to the position below the metal detection piece, the metal detection piece sends a detection signal to the processor, and when the second sub-disc 21, the fourth sub-disc 22 or the sixth sub-disc 23 of the first disc 2 rotates to the position below the metal detection piece, the metal detection piece stops sending the detection signal to the processor. The processor judges the rotation direction of the second disc 3 according to the sequence of the received detection signals, and obtains the water flow direction according to the relation between the preset rotation direction of the second disc 3 and the water flow direction. The water flow direction detection device in the water meter of the embodiment can accurately and timely detect the water flow direction in the water meter, has a simple structure, is easy to manufacture, and can be installed in the water meter.
Preferably, the metal detecting member includes a bracket 41, a magnet 42, a spring 43 and a pressure sensor 44, the bracket 41 is fixedly connected to the rotating shaft 1, and the magnet 42 is fixedly disposed on the bracket 41. The top end of the spring 43 is connected to the bracket 41 and the bottom end of the spring 43 is located above the second disc 3. A pressure sensor 44 is mounted at the connection of the spring 43 and the bracket 41, the pressure sensor 44 being electrically connected to the processor.
When the detection device of the above embodiment is operated, when the first sub-disc 31, the third sub-disc 32 or the fifth sub-disc 33 of the second circular disc 3 rotates to the position below the metal detection piece, the first sub-disc 31, the third sub-disc 32 or the fifth sub-disc 33 is attracted by the magnet 42 to move upwards, the upper surface of the first sub-disc 31, the third sub-disc 32 or the fifth sub-disc 33 abuts against the bottom end of the spring 43 and presses the spring 43 upwards to deform the spring, and the pressure sensor 44 at the top end of the spring receives pressure and then sends a detection signal to the processor. When the second sub-disc 21, the fourth sub-disc 22 or the sixth sub-disc 23 of the first circular disc 2 rotates to a position below the metal detection piece, the first sub-disc 31, the third sub-disc 32 or the fifth sub-disc 33 does not move downwards due to the attraction of the magnet 42, the spring 43 recovers deformation, and the pressure sensor 44 stops sending a detection signal to the processor after being free from pressure.
As a preferred example, the areas of the first subdisc 31, the third subdisc 32 and the fifth subdisc 33 are not equal. The areas of the three sub-discs of the second disc 3 are not equal, when the metal detection piece is rotated to the position below the metal detection piece, the time for extruding the spring 43 by the upward movement of the three sub-discs is different, the time length of the detection signal sent to the processor by the pressure sensor is different, and the processor can judge the rotation sequence of the second disc 3 according to the sequence of the occurrence of the detection signals with different time lengths. For example, if the area of the first sub-disc 21 is 10, the area of the third sub-disc 23 is 5, and the area of the fifth sub-disc 25 is 15, then the time length of the detection signal received by the processor is 2 when the first sub-disc 21 rotates to the lower side of the metal detection piece, the time length of the detection signal received by the processor is 1 when the third sub-disc 23 rotates to the lower side of the metal detection piece, and the time length of the detection signal received by the processor is 3 when the fifth sub-disc 25 rotates to the lower side of the metal detection piece. If the occurrence order of the time lengths of the detection signals received by the processor is 2-1-3-2-1-3, it can be judged that the second disk 3 is rotated counterclockwise. If the occurrence order of the time lengths of the detection signals received by the processor is 3-1-2-3-1-2, it can be judged that the second disk 3 rotates clockwise.
Further, the area of the first subdisc 31, the area of the third subdisc 32, and the area of the fifth subdisc 33 increase in this order. The area of the first sub-disc 31 is smaller than that of the third sub-disc 32, the area of the third sub-disc 32 is smaller than that of the fifth sub-disc 33, so that the time length of a detection signal sent to the processor by the pressure sensor when the first sub-disc 31 rotates below the metal detection piece is smaller than that of a detection signal sent to the processor by the pressure sensor when the third sub-disc 32 rotates below the metal detection piece, and the time length of a detection signal sent to the processor by the pressure sensor when the third sub-disc 32 rotates below the metal detection piece is smaller than that of a detection signal sent to the processor by the pressure sensor when the fifth sub-disc 33 rotates below the metal detection piece. The processor judges that the rotating direction of the second disc 3 rotates anticlockwise if the duration of the received detection signals is increased in sequence in a cycle according to the sequence of the received detection signals; if the duration of the received detection signal is sequentially decreased in one cycle, it is judged that the rotation direction of the second disk 3 is clockwise rotation.
Preferably, dovetail grooves are formed on both sides of the lower surfaces of the second, fourth and sixth sub-discs 21, 22 and 23, and protrusions engaged with the dovetail grooves are formed on both sides of the upper surfaces of the first, third and fourth sub-discs 31, 32 and 33. When the first, third or fifth sub-disc 31, 32 or 33 is moved upward by the magnet 42, the protrusions are fitted into the dovetail grooves.
In the detection device of the embodiment, the first disc 2 and the second disc 3 rotate synchronously, when the first sub disc 31 moves below the metal detection piece, the first sub disc 31 moves upwards under the action of the magnet 42, the convex blocks on two sides of the upper surface of the first sub disc 31 are respectively inserted into the dovetail grooves on one side of the lower surfaces of the second sub disc 21 and the sixth sub disc 23, and the dovetail grooves hold the convex blocks tightly. The first disk 2 and the second disk 3 continue to rotate, the first sub-disk 31 moves out of the position below the metal detection piece, and after the first sub-disk 31 is not attracted by the magnet 42, the first sub-disk 31 moves downwards under the action of self gravity, and the lug of the first sub-disk is separated from the dovetail groove. The dovetail groove of the first disk 2 and the protruding block of the second disk 3 form a plurality of pairs of encircling structures, play a supporting role when the second disk 3 moves upwards, prevent the second disk 3 from shaking in the rotating process, and further influence the pressure sensor to send a detection signal, thereby ensuring the detection accuracy.
The embodiment of the invention also provides a method for detecting the water flow direction in the water meter, and the method for detecting the water flow direction in the water meter adopting the embodiment or the preferred embodiment comprises the following steps:
step 1) the first disc 2 and the second disc 3 synchronously rotate under the driving of a rotating metering mechanism of the water meter;
step 2) when the first sub-disc 31, the third sub-disc 32 or the fifth sub-disc 33 of the second disc 3 rotates to the position below the metal detection piece, the metal detection piece sends a detection signal to the processor; when the second sub-disc 21, the fourth sub-disc 22 or the sixth sub-disc 23 of the first disc 2 rotates to the position below the metal detection piece, the metal detection piece stops sending a detection signal to the processor;
step 3) the processor judges the rotation direction of the second disc 3 according to the sequence of the received detection signals;
and 4) obtaining the water flow direction according to the relation between the preset rotation direction of the second disc 3 and the water flow direction.
The detection method of the embodiment can accurately and timely detect the water flow direction in the water meter, and is simple in steps.
As a preferred example, step 2) specifically includes:
when the first sub-disc 31, the third sub-disc 32 or the fifth sub-disc 33 of the second circular disc 3 rotates to the position below the metal detection piece, the first sub-disc 31, the third sub-disc 32 or the fifth sub-disc 33 is attracted by the magnet 42 to move upwards, the upper surface of the first sub-disc 31, the third sub-disc 32 or the fifth sub-disc 33 abuts against the bottom end of the spring 43 and presses the spring 43 upwards to deform the spring, and the pressure sensor 44 at the top end of the spring sends a detection signal to the processor after being subjected to pressure;
when the second sub-disc 21, the fourth sub-disc 22 or the sixth sub-disc 23 of the first circular disc 2 rotates to a position below the metal detection piece, the first sub-disc 31, the third sub-disc 32 or the fifth sub-disc 33 does not move downwards due to the attraction of the magnet 42, the spring 43 recovers deformation, and the pressure sensor 44 stops sending a detection signal to the processor after being free from pressure.
As a preferred example, step 3) specifically includes:
the processor judges that the rotating direction of the second disc 3 rotates anticlockwise if the duration of the received detection signals is increased in sequence in a cycle according to the sequence of the received detection signals; if the duration of the received detection signal is sequentially decreased in one cycle, it is judged that the rotation direction of the second disk 3 is clockwise rotation.
As a preferred example, the detection method of this embodiment further includes:
and 4) judging to obtain the water flow speed by the processor according to the time interval of the received detection signals with the same time length.
Specifically, if the time interval of the detection signals in the same time length is short, the water flow speed is judged to be high, and if the time interval of the detection signals in the same time length is long, the water flow speed is judged to be low.
The detection method of the embodiment can detect the water flow direction and the water flow speed, and is simple and easy to implement.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to further illustrate the principles of the invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention, which is also intended to be covered by the appended claims. The scope of the invention is defined by the claims and their equivalents.
Claims (9)
1. A water flow direction detection device in a water meter is characterized by comprising a rotating shaft (1), a first disc (2), a second disc (3), a metal detection part and a processor, wherein the first disc (2) and the second disc (3) are both connected with a rotating metering mechanism of the water meter, the first disc (2) and the second disc (3) are both sleeved on the rotating shaft (1) and can rotate around the rotating shaft (1), and the first disc (2) is positioned above the second disc (3); the first disc (2) comprises a second sub-disc (21), a fourth sub-disc (22) and a sixth sub-disc (23) which are sequentially arranged in a clockwise mode along the circumferential direction and are not connected with each other, and the second sub-disc (21), the fourth sub-disc (22) and the sixth sub-disc (23) are made of non-metal materials; the second disc (3) comprises a first sub-disc (31), a third sub-disc (32) and a fifth sub-disc (33) which are sequentially arranged in a clockwise mode along the circumferential direction and are not connected with each other, and the first sub-disc (31), the third sub-disc (32) and the fifth sub-disc (33) are made of metal materials; the first disc (2) and the second disc (3) are arranged in a staggered manner; the metal detection piece is fixedly connected with the rotating shaft (1) and is positioned above the second disc (3), and the metal detection piece is electrically connected with the processor; the metal detection piece is used for sending a detection signal to the processor when detecting the first sub-disc (31), the third sub-disc (32) or the fifth sub-disc (33).
2. A water flow direction detecting device in a water meter according to claim 1, wherein the metal detecting member includes a bracket (41), a magnet (42), a spring (43) and a pressure sensor (44), the bracket (41) is fixedly connected with the rotating shaft (1), and the magnet (42) is fixedly arranged on the bracket (41); the top end of the spring (43) is connected with the bracket (41), and the bottom end of the spring (43) is positioned above the second disc (3); the pressure sensor (44) is arranged at the joint of the spring (43) and the bracket (41), and the pressure sensor (44) is electrically connected with the processor.
3. A water flow direction detecting device in a water meter according to claim 2, characterized in that the areas of the first subdisc (31), the third subdisc (32) and the fifth subdisc (33) are not equal.
4. A water flow direction detecting device in a water meter according to claim 3, characterized in that the area of the first subdisc (31), the area of the third subdisc (32) and the area of the fifth subdisc (33) are sequentially increased.
5. The water flow direction detection device in the water meter according to the claim 2, characterized in that the two sides of the lower surfaces of the second sub-disk (21), the fourth sub-disk (22) and the sixth sub-disk (23) are provided with dovetail grooves, and the two sides of the upper surfaces of the first sub-disk (31), the third sub-disk (32) and the fourth sub-disk (33) are provided with convex blocks matched with the dovetail grooves.
6. A method for detecting a direction of water flow in a water meter, using the water flow direction detecting device in a water meter according to any one of claims 1 to 5, the method comprising the steps of:
step 1), a first disc (2) and a second disc (3) synchronously rotate under the drive of a rotating metering mechanism of the water meter;
step 2), when the first sub-disc (31), the third sub-disc (32) or the fifth sub-disc (33) of the second disc (3) rotates to the position below the metal detection piece, the metal detection piece sends a detection signal to the processor; when the second sub-disc (21), the fourth sub-disc (22) or the sixth sub-disc (23) of the first disc (2) rotates to the position below the metal detection piece, the metal detection piece stops sending a detection signal to the processor;
step 3), the processor judges and obtains the rotation direction of the second disc (3) according to the sequence of the received detection signals;
and 4) obtaining the water flow direction according to the relation between the preset rotation direction of the second disc (3) and the water flow direction.
7. The method for detecting the direction of water flow in a water meter as claimed in claim 6, wherein said step 2) specifically comprises:
when the first sub-disc (31), the third sub-disc (32) or the fifth sub-disc (33) of the second disc (3) rotates to the position below the metal detection piece, the first sub-disc (31), the third sub-disc (32) or the fifth sub-disc (33) is attracted by the magnet (42) to move upwards, the upper surface of the first sub-disc (31), the third sub-disc (32) or the fifth sub-disc (33) abuts against the bottom end of the spring (43) and presses the spring (43) upwards to deform the spring (43), and the pressure sensor (44) at the top end of the spring sends a detection signal to the processor after being pressed;
when the second sub-disc (21), the fourth sub-disc (22) or the sixth sub-disc (23) of the first disc (2) rotates to the position below the metal detection piece, the first sub-disc (31), the third sub-disc (32) or the fifth sub-disc (33) does not move downwards under the attraction of the magnet (42), the spring (43) restores to deform, and the pressure sensor (44) stops sending a detection signal to the processor after being not pressed.
8. The method for detecting the direction of water flow in a water meter as claimed in claim 6, wherein said step 3) specifically comprises:
the processor judges that the rotating direction of the second disc (3) rotates anticlockwise if the duration of the received detection signals is increased in sequence in a cycle according to the sequence of the received detection signals; if the duration of the received detection signal is successively decreased in one cycle, it is judged that the rotation direction of the second disk (3) is clockwise rotation.
9. The method of detecting direction of water flow in a water meter recited in claim 6, further comprising:
and 4) judging to obtain the water flow speed by the processor according to the time interval of the received detection signals with the same time length.
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| CN202011533211.3A CN112729438A (en) | 2020-12-22 | 2020-12-22 | Water flow direction detection device and method in water meter |
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| CN202011533211.3A CN112729438A (en) | 2020-12-22 | 2020-12-22 | Water flow direction detection device and method in water meter |
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| CN211877146U (en) * | 2020-05-14 | 2020-11-06 | 宁夏隆基宁光仪表股份有限公司 | Non-magnetic intelligent water meter based on EFM32 single-chip microcomputer |
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Application publication date: 20210430 |