CN114166298A - Multi-channel ultrasonic water meter based on one-sending double-receiving transducer - Google Patents
Multi-channel ultrasonic water meter based on one-sending double-receiving transducer Download PDFInfo
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- CN114166298A CN114166298A CN202210131199.6A CN202210131199A CN114166298A CN 114166298 A CN114166298 A CN 114166298A CN 202210131199 A CN202210131199 A CN 202210131199A CN 114166298 A CN114166298 A CN 114166298A
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- water meter
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- pipe section
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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
- G01F1/66—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 measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/662—Constructional details
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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
- G01F1/66—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 measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
-
- 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
- G01F1/66—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 measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
- G01F1/668—Compensating or correcting for variations in velocity of sound
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention relates to the technical field of ultrasonic water meters, and discloses a multi-channel ultrasonic water meter based on a one-sending and double-receiving transducer, which comprises an ultrasonic water meter metering pipe section, at least 4 one-sending and double-receiving transducers, a metering processing circuit, a storage communication circuit and a water meter shell, wherein the ultrasonic water meter metering pipe section comprises a water meter pipe section, a water meter inlet and a water meter outlet; the ultrasonic sound beam emitted by each transducer can be divided into two beams which are respectively received by the two transducers to generate two receiving signals, and the received signals are analyzed by a multichannel ultrasonic metering algorithm to obtain real-time flow data. The invention realizes the multi-sound-path signal transmission through the single transducer, and the multi-sound-path signal ensures the metering accuracy; the energy converters are large in number, and even if one energy converter fails, the whole meter work is not influenced, so that the reliability of the water meter is ensured; the single-transmitting double-receiving transducer saves space and is suitable for large, medium and small caliber water meters.
Description
Technical Field
The invention relates to the technical field of ultrasonic water meters, in particular to a multi-channel ultrasonic water meter based on a transmitting transducer and a receiving transducer.
Background
The most common flow calculation method for the ultrasonic water meter at present is a time difference method, and the principle of the method is that an ultrasonic transducer converts an electric signal into an acoustic signal, the acoustic signal is transmitted to another ultrasonic transducer through a medium and then converted into the electric signal, flow information is obtained through circuit calculation, and fluid flow is calculated through time difference in the downstream direction and the upstream direction.
The currently adopted ultrasonic water meter is usually a single channel, the number of sound channels is small, the acquired information is few, the error is large, only two transducers are provided, if one transducer fails, the whole meter is invalid, and the reliability is insufficient; there are also multichannel water meters on the market, but for single-shot single-receiving mode, need more transducers, therefore can only be applied to heavy-calibre water meter, and application scope is limited.
Disclosure of Invention
Aiming at the defects and defects of the prior art, the invention provides a multi-channel ultrasonic water meter based on a single-transmitting-double-receiving transducer, solves the problems of larger metering error, more use of multi-channel ultrasonic water meter transducers and application limitation of the prior single-channel ultrasonic water meter, realizes multi-sound-path signal transmission through a single transducer, ensures the metering accuracy by multi-sound-path signals, ensures the reliability of the water meter, saves space by the single-transmitting-double-receiving transducer even if one transducer fails, and is suitable for large, medium and small-caliber water meters.
The purpose of the invention can be realized by the following technical scheme:
a multi-channel ultrasonic water meter based on a one-transmitting and double-receiving transducer comprises an ultrasonic water meter metering pipe section, at least 4 one-transmitting and double-receiving transducers, a metering processing circuit, a storage communication circuit and a water meter shell;
the ultrasonic sound beam emitted by the one-transmitting double-receiving transducer after receiving the excitation signal is divided into two beams which are respectively received by the two one-transmitting double-receiving transducers to generate two receiving signals;
the metering processing circuit successively applies pulse voltage to the transmitting transducer, sequentially collects signals received by at least two receiving transducers, and converts multi-channel information received by the receiving transducers into real-time flow data through a multi-channel ultrasonic metering algorithm;
the storage communication circuit stores the required flow data and periodically transmits the flow data to the master station according to the master station command;
the water meter shell comprises a water meter side wall and a water meter upper cover;
the connection relationship is as follows: the ultrasonic water meter comprises a water meter shell, a water meter measuring pipe section, a first transmitting transducer, a second transmitting transducer, a measuring processing circuit, a storage communication circuit, a conducting structure and a communication circuit, wherein the first transmitting transducer and the second transmitting transducer are all arranged on the pipe wall of the ultrasonic water meter measuring pipe section, the measuring processing circuit and the storage communication circuit are connected to the first transmitting transducer and the second transmitting transducer through the conducting structure, and the ultrasonic water meter measuring pipe section is embedded into the water meter shell and is tightly connected with the water meter shell.
Further, the installation mode of the at least 4 transmitting-receiving transducers on the metering pipe section of the ultrasonic water meter is integrated or split:
if the transducer is integrated, the transducer and the pipe wall of the ultrasonic water meter metering pipe section are integrated, and the piezoelectric ceramic of the transducer is tightly connected to the outer surface of the ultrasonic water meter metering pipe section;
if the water meter is split, the single-transmitting double-receiving transducers are hermetically fixed on the water meter pipe section in a sealing ring and bolt mode.
Furthermore, the working frequency of the transmitting-receiving transducer is 1-4 MHz.
Furthermore, the ultrasonic water meter metering pipe section is a direct-injection ultrasonic water meter metering pipe section or a reflection ultrasonic water meter metering pipe section.
Furthermore, in the structure of the metering pipe section of the direct-injection ultrasonic water meter, ultrasonic waves emitted by the emitting transducer are directly received by the receiving transducer without reflection, at least 2 transmitting-receiving transducers are arranged on the side wall of one side of the metering pipe section of the direct-injection ultrasonic water meter, and the transmitting-receiving transducers with the same number are arranged on the side wall of the other side of the pipe section corresponding to the side wall of one side.
Further, in the structure of the metering pipe section of the reflection type ultrasonic water meter, the ultrasonic wave transmitted by the transmitting transducer reaches the receiving transducer through at least one reflection.
Further, the conductive structure is one or more of the following 5 structures: the conductive coating comprises a lead, a spring pin, a spring piece and conductive coating.
The invention has the beneficial technical effects that:
(1) the problems of small number of sound channels and less acquired information of the single-channel ultrasonic water meter are solved, and the metering error of the water meter is reduced.
(2) The problem that a single-transmitting and single-receiving multi-channel ultrasonic water meter needs more transducers and is limited in application scene is solved, information acquisition of two sound paths is achieved by adopting one transducer, the number of the transducers is saved, the applicability is high, and the method and the device can be applied to large, medium and small-caliber ultrasonic water meters.
(3) The reliability of the ultrasonic water meter is guaranteed, a plurality of transducers are adopted, and even if one transducer breaks down, the whole meter work is not influenced.
Drawings
FIG. 1 is a flow chart of the operation of the present invention.
FIG. 2 is an exemplary diagram of a direct injection type metering pipe segment structure according to the present invention.
FIG. 3 is an exemplary diagram of a reflective metrology pipe segment configuration in accordance with the present invention.
Reference numerals: the ultrasonic water meter comprises an ultrasonic water meter pipe section 1, a first transducer 2, a second transducer 3, a third transducer 4, a fourth transducer 5, a fifth transducer 6, a sixth transducer 7, a seventh transducer 8, an eighth transducer 9, a first reflector 10 and a second reflector 11.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Example 1:
as shown in fig. 2, a multi-channel ultrasonic water meter based on a transmitting and receiving transducer comprises a direct-injection ultrasonic water meter metering pipe section (ultrasonic waves transmitted by the transmitting transducer are directly received by the receiving transducer without being reflected), 4 transmitting and receiving transducers with the working frequency of 1MHz, a metering processing circuit, a storage communication circuit and a water meter shell.
The ultrasonic sound beam emitted by the one-transmitting double-receiving transducer after receiving the excitation signal is divided into two beams which are respectively received by the two one-transmitting double-receiving transducers to generate two receiving signals.
The metering processing circuit successively applies pulse voltage to the transmitting transducer, sequentially collects signals received by at least two receiving transducers, and converts multi-channel information received by the receiving transducers into real-time flow data through a multi-channel ultrasonic metering algorithm.
The multi-channel ultrasonic metering algorithm adopts a transit time method suitable for multi-channel, obtains the linear average flow velocity on a chord by measuring the propagation time difference on different chord-direction channels in fluid, corrects the flow velocity by adopting different integral modes, eliminates the influence caused by uneven distribution of the fluid and obtains accurate flow, and the reference document:
measurement accuracy assessment of wangchi, bang, bearinging, sanxia engineering ultrasonic flowmeter [ J ] chinese measurement, 2012 (03): 75-78.
The storage communication circuit stores the required flow data and periodically transmits the flow data to the master station according to the master station command.
The water meter shell comprises a water meter side wall and a water meter upper cover.
The connection relationship is as follows: the ultrasonic water meter comprises a direct-injection ultrasonic water meter, a metering pipe section, a water meter shell, 2 transmitting and receiving transducers, a metering processing circuit, a storage communication circuit, a water meter shell and a water meter storage communication circuit, wherein the 2 transmitting and receiving transducers are arranged on the side wall of one side of the metering pipe section of the direct-injection ultrasonic water meter, the transmitting and receiving transducers with the same number are arranged on the side wall of the other side of the pipe section corresponding to the side wall of one side, the metering processing circuit and the storage communication circuit are connected to the transmitting and receiving transducers through a conductive structure, and the metering pipe section of the ultrasonic water meter is embedded in the water meter shell and is tightly connected with the water meter shell.
The installation mode of the transducer is integrated, namely the transducer is integrated with the pipe wall of the ultrasonic water meter metering pipe section, and the piezoelectric ceramic of the transducer is tightly connected on the outer surface of the ultrasonic water meter metering pipe section.
The first transducer transmits ultrasonic waves, the third transducer receives a signal V1-3, and the fourth transducer receives a signal V1-4; the second transducer transmits ultrasonic waves, the third transducer receives a signal V2-3, and the fourth transducer receives a signal V2-4; the third transducer transmits ultrasonic waves, the first transducer receives a signal V3-1, and the second transducer receives a signal V3-2; the fourth transducer transmits ultrasonic waves, the first transducer receives a signal V4-1, and the second transducer receives a signal V4-2; the received signal is processed by a multichannel flow measurement algorithm to obtain flow data of the ultrasonic water meter, and the flow is shown in fig. 1.
Example 2:
as shown in fig. 3, a multi-channel ultrasonic water meter based on a transmitting and receiving transducer comprises a reflective ultrasonic water meter metering pipe section (ultrasonic waves transmitted by the transmitting transducer reach the receiving transducer after at least one reflection), 4 transmitting and receiving transducers with the working frequency of 1MHz, a metering processing circuit, a storage communication circuit and a water meter shell.
The ultrasonic sound beam emitted by the one-transmitting double-receiving transducer after receiving the excitation signal is divided into two beams which are respectively received by the two one-transmitting double-receiving transducers to generate two receiving signals.
The metering processing circuit successively applies pulse voltage to the transmitting transducer, sequentially collects signals received by at least two receiving transducers, and converts multi-channel information received by the receiving transducers into real-time flow data through a multi-channel ultrasonic metering algorithm.
The multi-channel ultrasonic metering algorithm adopts a transit time method suitable for multi-channel, obtains the linear average flow velocity on a chord by measuring the propagation time difference on different chord-direction channels in fluid, corrects the flow velocity by adopting different integral modes, eliminates the influence caused by uneven distribution of the fluid and obtains accurate flow, and the reference document:
measurement accuracy assessment of wangchi, bang, bearinging, sanxia engineering ultrasonic flowmeter [ J ] chinese measurement, 2012 (03): 75-78.
The storage communication circuit stores the required flow data and periodically transmits the flow data to the master station according to the master station command.
The water meter shell comprises a water meter side wall and a water meter upper cover.
The connection relationship is as follows: the ultrasonic water meter comprises a direct-injection ultrasonic water meter measuring pipe section, 2 one-sending double-receiving transducers, a measuring processing circuit, a storage communication circuit, an ultrasonic transducer, a water meter shell and an ultrasonic water meter measuring pipe section, wherein the 2 one-sending double-receiving transducers are arranged on the front half section of the side wall of the measuring pipe section of the direct-injection ultrasonic water meter, the 2 one-sending double-receiving transducers are arranged on the rear half section of the side wall of the same side of the measuring pipe section, the measuring processing circuit and the storage communication circuit are connected to the ultrasonic transducer through a conductive structure, and the ultrasonic water meter measuring pipe section is embedded into the water meter shell and is tightly connected with the water meter shell.
The installation mode of the one-sending double-receiving transducer on the metering pipe section of the ultrasonic water meter is split, namely, each one-sending double-receiving transducer is hermetically fixed on the metering pipe section of the water meter in a sealing ring and bolt mode.
The fifth transducer emits ultrasonic waves, ultrasonic signals reach the seventh transducer after being reflected by the first reflector, the seventh transducer receives a signal V5-7, the ultrasonic signals reach the eighth transducer after being reflected by the second reflector, and the eighth transducer receives a signal V5-8; the sixth transducer emits ultrasonic waves, ultrasonic signals reach the seventh transducer after being reflected by the first reflector, the seventh transducer receives a signal V6-7, the ultrasonic signals reach the eighth transducer after being reflected by the second reflector, and the eighth transducer receives a signal V6-8; the seventh transducer emits ultrasonic waves, ultrasonic signals reach the fifth transducer after being reflected by the first reflector, the fifth transducer receives a signal V7-5, the ultrasonic signals reach the sixth transducer after being reflected by the second reflector, and the sixth transducer receives a signal V7-6; the eighth transducer emits ultrasonic waves, ultrasonic signals reach the fifth transducer after being reflected by the first reflector, the fifth transducer receives a signal V8-5, the ultrasonic signals reach the sixth transducer after being reflected by the second reflector, and the sixth transducer receives a signal V8-6; the received signal is processed by a multichannel flow measurement algorithm to obtain flow data of the ultrasonic water meter, and the flow is shown in fig. 1.
The above-mentioned embodiments are illustrative of the specific embodiments of the present invention, and are not restrictive, and those skilled in the relevant art can make various changes and modifications to obtain corresponding equivalent technical solutions without departing from the spirit and scope of the present invention, so that all equivalent technical solutions should be included in the scope of the present invention.
Claims (7)
1. A multi-channel ultrasonic water meter based on a one-sending double-receiving transducer is characterized by comprising an ultrasonic water meter metering pipe section, at least 4 one-sending double-receiving transducers, a metering processing circuit, a storage communication circuit and a water meter shell;
the ultrasonic sound beam emitted by the one-transmitting double-receiving transducer after receiving the excitation signal is divided into two beams which are respectively received by the two one-transmitting double-receiving transducers to generate two receiving signals;
the metering processing circuit successively applies pulse voltage to the transmitting transducer, sequentially collects signals received by at least two receiving transducers, and converts multi-channel information received by the receiving transducers into real-time flow data through a multi-channel ultrasonic metering algorithm;
the storage communication circuit stores the required flow data and periodically transmits the flow data to the master station according to the master station command;
the water meter shell comprises a water meter side wall and a water meter upper cover;
the connection relationship is as follows: the ultrasonic water meter comprises a water meter shell, a water meter measuring pipe section, a first transmitting transducer, a second transmitting transducer, a measuring processing circuit, a storage communication circuit, a conducting structure and a communication circuit, wherein the first transmitting transducer and the second transmitting transducer are all arranged on the pipe wall of the ultrasonic water meter measuring pipe section, the measuring processing circuit and the storage communication circuit are connected to the first transmitting transducer and the second transmitting transducer through the conducting structure, and the ultrasonic water meter measuring pipe section is embedded into the water meter shell and is tightly connected with the water meter shell.
2. The multi-channel ultrasonic water meter based on the transducer of one transducer and two receivers as claimed in claim 1, wherein the at least 4 transducers are installed on the metering pipe section of the ultrasonic water meter in an integrated or split manner:
if the transducer is integrated, the transducer and the pipe wall of the ultrasonic water meter metering pipe section are integrated, and the piezoelectric ceramic of the transducer is tightly connected to the outer surface of the ultrasonic water meter metering pipe section;
if the water meter is split, the single-transmitting double-receiving transducers are hermetically fixed on the water meter pipe section in a sealing ring and bolt mode.
3. The multi-channel ultrasonic water meter based on the transducer of one transmitter and two receivers as claimed in claim 1, wherein the operating frequency of the transducer of one transmitter and two receivers is 1-4 MHz.
4. The multi-channel ultrasonic water meter based on one transducer and two transducers as claimed in claim 1, wherein the metering pipe section of the ultrasonic water meter is a direct-injection ultrasonic water meter metering pipe section or a reflection ultrasonic water meter metering pipe section.
5. The multi-channel ultrasonic water meter based on the transducer of one or more transmitters and two or more receivers of claim 4, wherein in the structure of the metering pipe section of the direct-injection ultrasonic water meter, the ultrasonic waves emitted from the transmitting transducer are directly received by the receiving transducer without being reflected, at least 2 transducers of one or more transmitters and two or more receivers are installed on one side wall of the metering pipe section of the direct-injection ultrasonic water meter, and the same number of transducers of one or more transmitters and two or more receivers are installed on the other side wall of the metering pipe section corresponding to the one side wall.
6. The multi-channel ultrasonic water meter based on one transducer and two transducers as claimed in claim 4, wherein in the structure of the metering tube section of the reflection type ultrasonic water meter, the ultrasonic wave emitted by the emitting transducer reaches the receiving transducer through at least one reflection.
7. The ultrasonic water meter of claim 1, wherein the conductive structure is one or more of the following 5 structures: the conductive coating comprises a lead, a spring pin, a spring piece and conductive coating.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210131199.6A CN114166298A (en) | 2022-02-14 | 2022-02-14 | Multi-channel ultrasonic water meter based on one-sending double-receiving transducer |
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| CN202210131199.6A CN114166298A (en) | 2022-02-14 | 2022-02-14 | Multi-channel ultrasonic water meter based on one-sending double-receiving transducer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115876269A (en) * | 2022-11-29 | 2023-03-31 | 青岛鼎信通讯科技有限公司 | Multi-channel ultrasonic water meter |
| CN117168555A (en) * | 2023-09-08 | 2023-12-05 | 哈尔滨工业大学 | Receiving and transmitting integrated duplex flow detection ultrasonic transducer |
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| CN212133753U (en) * | 2020-06-05 | 2020-12-11 | 熊楚雄 | Double-reflection ultrasonic flowmeter |
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| US5351560A (en) * | 1989-12-15 | 1994-10-04 | Siemens Aktiengesellschaft | Ultrasonic flow meter |
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| CN117168555A (en) * | 2023-09-08 | 2023-12-05 | 哈尔滨工业大学 | Receiving and transmitting integrated duplex flow detection ultrasonic transducer |
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