CN105758478A - Stainless-steel ultrasonic water meter - Google Patents
Stainless-steel ultrasonic water meter Download PDFInfo
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- CN105758478A CN105758478A CN201610247902.4A CN201610247902A CN105758478A CN 105758478 A CN105758478 A CN 105758478A CN 201610247902 A CN201610247902 A CN 201610247902A CN 105758478 A CN105758478 A CN 105758478A
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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
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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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- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a stainless-steel ultrasonic water meter, and relates to the field of water meters. The stainless-steel ultrasonic water meter aims at solving the problem that multiple defects exist in a mechanical water meter used by an existing inhabitant. According to the stainless-steel ultrasonic water meter, the ultrasonic time difference principle is adopted, a full-electronic water meter made by industrial-grade electronic components is adopted, and compared with a mechanical water meter, the full-electronic water meter has the advantages that accuracy is high, reliability is good, the range ratio is wide, the service life is long, no moving part exists, parameters do not need to be set, and installing is carried out at any angle. On the basis of the metering mode of the ultrasonic water meter, the wireless collecting and reading characteristic and the valve control characteristic are also added. A pair of ultrasonic transducers are applied to receiving and sending ultrasonic waves at a flow measurement part in the opposite directions, the flow velocity of fluid is indirectly measured by observing the propagation time difference of downstream and upstream of the ultrasonic waves in a medium, and then the flow is calculated through the flow velocity. The stainless-steel ultrasonic water meter is high in measuring accuracy, convenient to use and prone to digital management; compared with water meters made of existing materials, the water quality is guaranteed; the stainless-steel ultrasonic water meter is suitable for measuring the water yield of a tap water pipe.
Description
Technical field
The invention belongs to water meter field, particularly relate to a kind of rustless steel ultrasonic water meter.
Background technology
Water meter is the equipment that every household is required, and what current resident family used is mechanical water meter, and closes the account according to water meter instruction, but, utilize existing machinery water meter when settling accounts, but to occur in that now numerous insoluble disputes and drawback.Such as: use because of mechanical water meter serious wear to cause heat energy meter accuracy all the year round, and then cause user need to repeatedly provide funds to safeguard, cause insoluble dispute between user and Running-water Company；Running-water Company staff regularly arrives user house and knocks at the door and check watermeter flowing rate data, check meter Degree of Success and accuracy low, and Running-water Company's management high cost, waste time and energy and can't copy back data in time and charge delayed.Meanwhile, existing machinery water meter mostly is irony or copper, uses the tap water mineral caused to exceed standard for a long time.Sum it up, existing standard machinery water meter crushing is big, easily blocking, serious wear, service life is short, measuring accuracy is low, water quality inferiority.
Summary of the invention
The present invention is the problem that the mechanical water meter used to solve existing resident family exists various disadvantages, now provides rustless steel ultrasonic water meter.
Rustless steel ultrasonic water meter, it includes: rustless steel ultrasound wave base table 1, stainless steel casing 2, wireless transmission circuit one, wireless transmission circuit two, motor 4, main circuit 5, ultrasonic transducer 7, temperature sensor 8, battery 1 and battery 2 10；
The sidewall of rustless steel ultrasound wave base table 1 has three openings, two ultrasound wave correlation ends of ultrasonic transducer 7 and the thermometric end of temperature sensor 8 are each passed through three openings and are positioned at rustless steel ultrasound wave base table 1 inside, and place opening is sealed, two ultrasound wave correlation ends of ultrasonic transducer 7 are facing each other, the thermometric end of temperature sensor 8 is used for gathering rustless steel ultrasound wave base table 1 water temperature inside
The ultrasonic signal outfan of ultrasonic transducer 7 connects the ultrasonic signal input of main circuit 5, the temperature signal outfan of temperature sensor 8 connects the temperature signal input of main circuit 5, the signal output part that drives of main circuit 5 connects the driving signal input of motor 4, motor 4 is for driving the ball valve 6 on rustless steel ultrasound wave base table 1 to be switched on or off, the wireless signal input/output terminal of main circuit 5 connects the wireless signal I/O of wireless transmission circuit two, wireless transmission circuit one is connected with PC with wireless transmission method, transmission of wireless signals is realized between wireless transmission circuit one and wireless transmission circuit two,
Battery 1 is for powering for main circuit 5, and battery 2 10 is for powering for ball valve 6 and wireless transmission circuit two；
Stainless steel casing 2 is the housing of under shed, the opening of stainless steel casing 2 is sealed by the lateral wall of rustless steel ultrasound wave base table 1, and the valve handle of ball valve 6, wireless transmission circuit two, motor 4, main circuit 5, the terminals of ultrasonic transducer 7, the terminals of temperature sensor 8, battery 1 and battery 2 10 are respectively positioned on stainless steel casing 2 inside；Motor 4 is positioned at the top of ball valve 6, and the clutch end of motor 4 is fixing with the valve handle of ball valve 6 to be connected, and battery 1 is positioned at above ultrasonic transducer 7 and temperature sensor 8, and main circuit 5 is positioned at above battery 1；Main circuit 5 is provided with display screen 3, and the display signal output part of main circuit 5 connects the display signal input part of display screen 3, and stainless steel casing 2 upper surface has display mouth, and display screen 3 is mounted on this display mouth.
Under the promotion of the big data social need of Internet of Things, it is achieved intelligent flow detection and management technique become the focus of research at present.And the flow measurement precision of ultrasonic flow detection technique is little affected by detected fluid temperature, pressure, viscosity, the isoparametric impact of density.Rustless steel ultrasonic water meter of the present invention, measures and controls user's water accurately, and have reliable data acquisition management system with ultrasonic flowmeter, effective management user's data of water meter.Meanwhile, the present invention adopts stainless steel as user's tap water flow measurement part, it is to avoid the situation that the tap water mineral that irony or copper mechanical water meter base table measurement flow cause in the past exceeds standard occurs.
The present invention adopts ultrasound wave time difference principle, the all-electronin water meter adopting technical grade electronic devices and components to be fabricated by, and has precision height compared with mechanical water meter, good reliability, range ratio width, long service life, without any movable part, it is not necessary to arrange the features such as parameter, arbitrarily angled installation.On the basis of ultrasonic water meter metering method, add again wireless meter-reading and the feature of valve control.Flow measurement section is applied a pair ultrasonic transducer and is received and dispatched ultrasound wave in opposite directions, by observing ultrasound wave following current in media as well and adverse current propagation time difference measures the flow velocity of fluid indirectly, carrys out calculated flow rate again through flow velocity.
It is remote controlled with valve control device that the present invention is integrated with Intelligent supersonic water meter measurement, and this product overcomes ultrasonic water meter and only measures the shortcoming without management；Product has aesthetic in appearance, accurate measurement, convenient management, stable, anti-soil antiseptic power strong, long service life, the feature such as safe and reliable, economical and practical, can be widely applied in the water measurement of Running-water Company.Compare with traditional mechanical flow instrument, electromagnetic flow instrument, measuring accuracy of the present invention is high, to the strong adaptability of caliber, noncontact fluid, easy to use, be prone to digital management；Compared with current material water meter so that water quality is protected.The present invention is applicable to the water supply pipe water yield is measured.
Accompanying drawing explanation
Fig. 1 is the perspective view of rustless steel ultrasonic water meter of the present invention；
Fig. 2 is the front view of rustless steel ultrasonic water meter of the present invention；
Fig. 3 is that the A-A of Fig. 2 is to sectional view；
Fig. 4 is that the B-B of Fig. 2 is to sectional view；
Fig. 5 is the installation diagram of ultrasound wave base table and temperature sensor and ultrasonic transducer；
Fig. 6 is the electrical structure schematic diagram of rustless steel ultrasonic water meter of the present invention.
Detailed description of the invention
Detailed description of the invention one: illustrate present embodiment referring to figs. 1 through Fig. 6, rustless steel ultrasonic water meter described in present embodiment, it includes: rustless steel ultrasound wave base table 1, stainless steel casing 2, wireless transmission circuit one, wireless transmission circuit two, motor 4, main circuit 5, ultrasonic transducer 7, temperature sensor 8, battery 1 and battery 2 10；
The sidewall of rustless steel ultrasound wave base table 1 has three openings, two ultrasound wave correlation ends of ultrasonic transducer 7 and the thermometric end of temperature sensor 8 are each passed through three openings and are positioned at rustless steel ultrasound wave base table 1 inside, and place opening is sealed, two ultrasound wave correlation ends of ultrasonic transducer 7 are facing each other, the thermometric end of temperature sensor 8 is used for gathering rustless steel ultrasound wave base table 1 water temperature inside
The ultrasonic signal outfan of ultrasonic transducer 7 connects the ultrasonic signal input of main circuit 5, the temperature signal outfan of temperature sensor 8 connects the temperature signal input of main circuit 5, the signal output part that drives of main circuit 5 connects the driving signal input of motor 4, motor 4 is for driving the ball valve 6 on rustless steel ultrasound wave base table 1 to be switched on or off, the wireless signal input/output terminal of main circuit 5 connects the wireless signal I/O of wireless transmission circuit two, wireless transmission circuit one is connected with PC with wireless transmission method, transmission of wireless signals is realized between wireless transmission circuit one and wireless transmission circuit two,
Battery 1 is for powering for main circuit 5, and battery 2 10 is for powering for ball valve 6 and wireless transmission circuit two；
Stainless steel casing 2 is the housing of under shed, the opening of stainless steel casing 2 is sealed by the lateral wall of rustless steel ultrasound wave base table 1, and the valve handle of ball valve 6, wireless transmission circuit two, motor 4, main circuit 5, the terminals of ultrasonic transducer 7, the terminals of temperature sensor 8, battery 1 and battery 2 10 are respectively positioned on stainless steel casing 2 inside；Motor 4 is positioned at the top of ball valve 6, and the clutch end of motor 4 is fixing with the valve handle of ball valve 6 to be connected, and battery 1 is positioned at above ultrasonic transducer 7 and temperature sensor 8, and main circuit 5 is positioned at above battery 1；Main circuit 5 is provided with display screen 3, and the display signal output part of main circuit 5 connects the display signal input part of display screen 3, and stainless steel casing 2 upper surface has display mouth, and display screen 3 is mounted on this display mouth.
In present embodiment, rustless steel ultrasound wave base table 1 is internal adopts latus rectum formula structure, areflexia post；Ultrasonic transducer 7 adopts card edge type to be fixed on pipe interior, it is achieved signal correlation；Mechanical moving component in structure, the interference of water field is little, be susceptible to aeration, improves certainty of measurement and stability.And to measuring water field, there is rectification, flow stabilizing function, not by the interference of water field stricture of vagina stream, flow-disturbing, make actual metered more accurately and reliably, without installing straight length before and after table.During practical application, rustless steel ultrasound wave base table 1 is integral structure with ball valve 6, compact conformation, it is simple to install；Duct length is optimal choice, and the water meter of original size is changed at convenient scene.And ball valve 6 valve handle adopts two-layer to seal, it is prevented that leak；Ball valve 6 hermetic unit adopts import tetrafluoro material, it is ensured that while sealing, not easily make again valve stuck, it is ensured that durability uses.
Main circuit 5 is the control end of motor 4, and motor 4 is the actuating station of ball valve 6, and it completes the on/off operation of ball valve 6.By said structure, present embodiment can control watermeter flowing rate at far-end, in real time monitoring water meter ball valve state, controls flow, flow velocity or break-make, adjusts watermeter flowing rate as required, additionally it is possible to solve seepy question in time at far-end.
Main circuit 5, ultrasonic transducer 7, temperature sensor 8 form the main measurement part of effusion meter, the combination of ultrasound wave base table and ultrasonic transducer, playing acoustic wave transducer is plug-in type encapsulating structure, it is directly installed in base table pipeline, working in correlation mode, main circuit 5 and ultrasonic transducer 7 obtain discharge, and the temperature that temperature sensor 8 gathers is as the correction factor of flow, achieve the function by measuring signal return, thus reaching function of measuring.After ultrasonic transducer is installed, transducer is directly installed on the middle of pipeline drift diameter, it is to avoid the semicanal or have that causes under bubble regime cannot measure when hydraulic pressure deficiency, and initial-flow can be accomplished non-normally low by this metering system.
Being adopt 470MHz wireless communication technology between wireless transmission circuit one and wireless transmission circuit two, it is GPRS wireless communication technology that wireless transmission circuit one adopts with PC, and wireless transmission circuit one is an independent data acquisition equipment.
In present embodiment, display screen 3 is LCD display, can show the information such as integrated flow, water temperature, instantaneous velocity, valve state, arrearage information, clock, address.
Detailed description of the invention two: illustrate present embodiment with reference to Fig. 5, present embodiment is that the rustless steel ultrasonic water meter described in detailed description of the invention one is described further, in present embodiment, place opening is sealed by two ultrasound wave correlation ends of ultrasonic transducer 7 and the thermometric end of temperature sensor 8 respectively through sealing ring 11.
Sealing ring 11 is the interstitial site preventing water from never becoming rusty steel ultrasound wave base table 1 seepage and being arranged on ball valve 6, ultrasonic transducer 7 and temperature sensor 8 and rustless steel ultrasound wave base table 1, as shown in Figure 5.
Detailed description of the invention three: present embodiment is that the rustless steel ultrasonic water meter described in detailed description of the invention one is described further, and in present embodiment, battery 1 is ER26500H lithium battery, and battery 2 10 is ER18505M lithium battery.
Detailed description of the invention four: present embodiment is that the rustless steel ultrasonic water meter described in detailed description of the invention one is described further, and in present embodiment, wireless transmission circuit one and wireless transmission circuit two are 470M wireless transmission circuit.
In present embodiment, valve control, communication module, it is equipped with two kinds and controls interface: Wireless remote control pattern and hander pattern.Wireless remote control pattern: wireless 470MHz frequency range, adopt LORA technology, have the advantages that communication distance is remote, unidirectional spacious communication distance > 8km, two-way data communication spaciousness distance > 3km, indoor communication≤300 meter, it is possible to the long distance wireless data set meeting civilian instrument is copied, and long-range control.
Wireless mode of operation: table end is by wireless 470MHz and building or unit wireless harvester both-way communication, for power consumption consideration, the every 5s unlatching wireless module of table end wireless module once continues 20ms and intercepts whether wireless collection device has instruction to issue；And the instruction such as wireless collection device can forward the checking meter of Managing system of above position machine at any time, supplements with money, switch valve.
Detailed description of the invention five: present embodiment is that the rustless steel ultrasonic water meter described in detailed description of the invention one is described further, and in present embodiment, temperature sensor 8 is NTC temperature sensor.
Adopting high accuracy NTC temperature sensor 8 in present embodiment, main test fluid temperature (F.T.) is to calibrate sonication times value, and then accurate measurement flow；When measuring water temperature, when temperature occurs abnormal, can recording exceptional warning message.
Detailed description of the invention six: present embodiment is that the rustless steel ultrasonic water meter described in detailed description of the invention one is described further, and in present embodiment, the center resonant frequency of ultrasonic transducer 7 is 1.0MHZ ± 5%；Overall sensitivity is-30dBmin；Transmitted wave beam angle is-3dB full opened corner；Electrostatic capacitance is 1200PF ± 20%；Maximum working voltage impulse wave < 300V；Operating temperature is between 0 DEG C～95 DEG C.The piezoelectric ceramic piece of the ultrasonic transducer 7 described in present embodiment adopts Φ 8mm, and performance is more stable, and compressive resistance is high.
Detailed description of the invention seven: present embodiment is that the rustless steel ultrasonic water meter described in detailed description of the invention one is described further, and in present embodiment, motor 4 is 3.6V drive motor, and gearbox speed reduction ratio is 3600:1.
Motor 4 described in present embodiment has torsion height, the feature of resistance to use.Master gear adopts specific alloy steel, wear-resistant.Band limit switch, it is possible to export the information that puts in place, it is prevented that stuck.Motor 4 adopts waterproof machine, it is prevented that the damage to motor gear, electronic section because of condensed water or dampness.
Detailed description of the invention eight: present embodiment is that the rustless steel ultrasonic water meter described in detailed description of the invention one is described further, in present embodiment, main circuit 5 is MSP430 series 4481 chips.
Master chip adopts low-power scm MSP430 series 4481 chips, ensures the long-time reliably working of ultrasonic water meter.By the particular design to software, make to ensure measuring accuracy value under any flow point in product arbitrary temp point in different pressures, temperature range, range of flow, measuring accuracy grade: 2 grades.Signal sample circuit through particular design, it is ensured that signal is all without being distorted at different conditions, thus ensureing measurement parameter accurately and reliably；By computer on-line calibration mode, it is ensured that calibration process is accurately and reliably；Main circuit 5 processes through strict processing technique, it is ensured that the long playing reliability of circuit；With pin-saving chip E2PROM, parameter preserves: flow calibration parameter, temperature calibration parameter, table address, bore etc. are saved in independent region.Real time data preserves: the data such as integrated flux, flow velocity will regularly preserve.18 months storage of history data Ps: in every month 0 time 0 point of integrated flux preserving upper month in 0 second, data such as maximum stream flow.Having the function of wash-out valve of automatically staggering the time, valve is closed in arrearage prompting, arrearage, it is ensured that water supply rate of charge, and it is remote controlled to manage system.Flow collection part adopts High-precision time-to-digital converter special chip, and certainty of measurement is high, good stability.
The main performance index of rustless steel ultrasonic water meter of the present invention enters shown in table 1:
Table 1 main performance index
Rustless steel ultrasonic water meter of the present invention compares with existing gauge table:
1 structurally: mechanical water meter adopts wheel rotation metered flow, and in pipeline, choked flow device causes the low negotiability of mechanical water meter, is very easy to blocking, and abrasion is comparatively serious, and service life is not long, changes frequently.Ultrasonic water meter measuring mechanism movement-less part, never wornout.
2 on initial-flow: Ultrasonic water meter initial-flow is low, greatly reduces the leakage meter phenomenon of mechanical water meter low discharge, makes water rate metering loss reduce to minimum.
3 in the pressure loss: Ultrasonic water meter low pressure loss, greatly reduces power consumption penalty, reduces water supply consumption.
4 are measuring functionally: Ultrasonic water meter can determine whether that fluid flows to, and can be distributed many kinds of parameters such as measuring positive and negative flow number, and measurable flow speed, instantaneous delivery, integrated flux, writing task time and fault time.Mechanical water meter then cannot judge reverse installation, causes metering loss, provides chance to illegal water, and can only measure integrated flux.
5 are checking meter and in communication: most of mechanical water meters adopt theory of mechanics counting, though unpowered requirement, but also bring simultaneously and cannot configure output, it is impossible to realize the New technical use such as data acquisition computer management, radio meter register.Ultrasonic water meter can adopt battery to power, continuous operation at about 6 years, and configurable multiple output as, M-BUS, pulse, 470MHz is wireless, GPRS kilowatt meter reading-out system and wireless write by hand device.
6 in measuring accuracy: Ultrasonic water meter is absent from wearing terrain due to structure, as long as caliber is constant, its precision would not change.Owing to there is easy-abrasion part in mechanical water meter, its degree of wear can be gradually increased along with the use time in structure, cause that precision growth over time reduces, increase the error of metering.
7 are controlling in management: standard machinery formula water meter is without the means controlling current.Rustless steel ultrasonic water meter adopts effusion meter and controls integral structure, and can complete remote control, adds way to manage, it is simple to maintenance management.
8 in effusion meter material: effusion meter adopts stainless steel, it is to avoid conventional ferrum, copper material effusion meter recontamination water.
Claims (8)
1. rustless steel ultrasonic water meter, it is characterized in that, it includes: rustless steel ultrasound wave base table (1), stainless steel casing (2), wireless transmission circuit one, wireless transmission circuit two, motor (4), main circuit (5), ultrasonic transducer (7), temperature sensor (8), battery one (9) and battery two (10)；
The sidewall of rustless steel ultrasound wave base table (1) has three openings, two ultrasound wave correlation ends of ultrasonic transducer (7) and the thermometric end of temperature sensor (8) are each passed through three openings and are positioned at rustless steel ultrasound wave base table (1) inside, and place opening is sealed, two ultrasound wave correlation ends of ultrasonic transducer (7) are facing each other, the thermometric end of temperature sensor (8) is used for gathering rustless steel ultrasound wave base table (1) water temperature inside
The ultrasonic signal outfan of ultrasonic transducer (7) connects the ultrasonic signal input of main circuit (5), the temperature signal outfan of temperature sensor (8) connects the temperature signal input of main circuit (5), the driving signal output part of main circuit (5) connects the driving signal input of motor (4), motor (4) is used for driving the ball valve (6) on rustless steel ultrasound wave base table (1) to be switched on or off, the wireless signal input/output terminal of main circuit (5) connects the wireless signal I/O of wireless transmission circuit two, wireless transmission circuit one is connected with PC with wireless transmission method, transmission of wireless signals is realized between wireless transmission circuit one and wireless transmission circuit two,
Battery one (9) is for powering for main circuit (5), and battery two (10) is for powering for ball valve (6) and wireless transmission circuit two；
The housing that stainless steel casing (2) is under shed, the opening of stainless steel casing (2) is sealed by the lateral wall of rustless steel ultrasound wave base table (1), and the valve handle of ball valve (6), wireless transmission circuit two, motor (4), main circuit (5), the terminals of ultrasonic transducer (7), the terminals of temperature sensor (8), battery one (9) and battery two (10) are respectively positioned on stainless steel casing (2) inside；Motor (4) is positioned at the top of ball valve (6), the clutch end of motor (4) is fixing with the valve handle of ball valve (6) to be connected, battery one (9) is positioned at ultrasonic transducer (7) and temperature sensor (8) top, and main circuit (5) is positioned at battery one (9) top；Main circuit (5) is provided with display screen (3), the display signal output part of main circuit (5) connects the display signal input part of display screen (3), stainless steel casing (2) upper surface has display mouth, and display screen (3) is mounted on this display mouth.
2. rustless steel ultrasonic water meter according to claim 1, it is characterized in that, place opening is sealed by two ultrasound wave correlation ends of ultrasonic transducer (7) and the thermometric end of temperature sensor (8) respectively through sealing ring (11).
3. rustless steel ultrasonic water meter according to claim 1, it is characterised in that battery one (9) is ER26500H lithium battery, battery two (10) is ER18505M lithium battery.
4. rustless steel ultrasonic water meter according to claim 1, it is characterised in that wireless transmission circuit one and wireless transmission circuit two are 470M wireless transmission circuit.
5. rustless steel ultrasonic water meter according to claim 1, it is characterised in that temperature sensor (8) is NTC temperature sensor.
6. rustless steel ultrasonic water meter according to claim 1, it is characterised in that the center resonant frequency of ultrasonic transducer (7) is 1.0MHZ ± 5%；Overall sensitivity is-30dBmin；Transmitted wave beam angle is-3dB full opened corner；Electrostatic capacitance is 1200PF ± 20%；Maximum working voltage impulse wave < 300V；Operating temperature is between 0 DEG C～95 DEG C.
7. rustless steel ultrasonic water meter according to claim 1, it is characterised in that motor (4) is 3.6V drive motor, and gearbox speed reduction ratio is 3600:1.
8. rustless steel ultrasonic water meter according to claim 1, it is characterised in that main circuit (5) is MSP430 series 4481 chips.
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| CN107356298A (en) * | 2017-08-29 | 2017-11-17 | 哈尔滨圣昌科技开发有限公司 | A kind of stainless steel ultrasonic wave valve control water meter detects pipeline section |
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Application publication date: 20160713 |