CN105157773A - Novel flow meter - Google Patents
Novel flow meter Download PDFInfo
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- CN105157773A CN105157773A CN201510444245.8A CN201510444245A CN105157773A CN 105157773 A CN105157773 A CN 105157773A CN 201510444245 A CN201510444245 A CN 201510444245A CN 105157773 A CN105157773 A CN 105157773A
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- 238000005259 measurement Methods 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000005284 excitation Effects 0.000 description 4
- 238000002604 ultrasonography Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 206010040007 Sense of oppression Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
A novel flow meter is characterized by comprising a ultrasonic transducer emitting and receiving ultrasonic waves, an emission circuit driving the transducer to emit ultrasonic waves, a receiving circuit receiving the ultrasonic waves, a controller controlling each modules of the system and calculating data, and a keyboard setting measurement physical environment parameters and setting instrument parameters, as well as a displaying module displaying real-time flow values.
Description
Technical field
The present invention relates to field of intelligent control technology, particularly a kind of new flowmeter.
Background technology
When ultrasound wave is propagated in unit distance, because the impact of rate of flow of fluid, so static fluid is different with the travel-time in dynamic fluid, transit-time ultrasonic flow meter is developed according to this principle, first its course of work measures the large of flow velocity, then according to the relation of flow velocity and flow, and then instantaneous delivery and the integrated flux of fluid is calculated.As long as transit-time ultrasonic flow meter ultrasound wave can through measuring object can measure with this type of flowmeter, this method is applicable to the fluid measurement that fluid impurity is few, flow velocity is large, difference variation is little, bore is wide, but this method requires higher to time measurement, can improve so will improve measuring accuracy from the Measurement accuracy time difference.
Summary of the invention
The present invention adopts following technical scheme:
A kind of new flowmeter, it is characterized in that, it comprises: ultrasonic transducer, is used for launching and connecing hyperacoustic device; Radiating circuit, is used for driving transducers transmit ultrasonic waves; Receiving circuit, be used for received ultrasonic signal; Controller, carries out management to the modules of system and controls and carry out computing to data; Keyboard, is mainly arranged and the optimum configurations of instrument the physical environment parameter measured; Display module, can show real-time traffic numerical value.
Preferably, embedded scm selected by described controller, and model selects ATmega64.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of instructions, coordinates accompanying drawing to be described in detail as follows below with preferred embodiment of the present invention.The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention structural representation.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
As shown in Figure 1, a kind of new flowmeter, is characterized in that, it comprises: 1, ultrasonic transducer, is used for launching and connecing hyperacoustic device; 2, radiating circuit, is used for driving transducers transmit ultrasonic waves; 3, receiving circuit, be used for received ultrasonic signal; 4, controller, carries out management to the modules of system and controls and carry out computing to data; 5, keyboard, is mainly arranged and the optimum configurations of instrument the physical environment parameter measured; 6, display module, can show real-time traffic numerical value.
Ultrasonic transducer be according to piezoelectric effect by special material be made be used for launch or receive hyperacoustic device, be also called ultrasonic probe, it can not only the ultrasonic signal required by the signal of other types or energy conversion one-tenth or energy, other forms of signal required by simultaneously also ultrasonic signal or energy conversion can being become or energy, thus realize hyperacoustic launching and receiving.
The principle of work of ultrasonic transducer is according to inverse piezoelectric effect, produces vibration, will launch ultrasonic pulse after piezoelectric chip is by transponder pulse excitation; When the ul-trasonic irradiation received is in wafer, according to direct piezo electric effect, wafer suffers oppression and vibrates the deformation that causes and be convertible into corresponding electric signal.The major parameter of ultrasonic transducer has:
1, resonance frequency.Resonance frequency refers to when the resonance frequency of the electric voltage frequency and piezoelectric crystal that are added in transducer two ends is equal, its energy exported is the highest, signal is the strongest, sensitivity is the highest, receive for ultrasound wave, if the frequency of acoustic signals is near resonance frequency, it can be converted into the strongest electric signal.
2, corrosivity.For mordant measurement of fluid flow, then to select the transducer of the material protection with corrosion resistance.
3, emission angle.The angle of hyperacoustic displaced central axis line launched by ultrasonic transducer, and it determines installation site and the direction of transducer.
4, operating voltage.The hyperacoustic operating voltage range of ultrasonic transducer normal transmission.
5, emissive power.The watt level of transducer work.
6, blind area.Because the defect that manufacture craft is, the minor increment that ultrasonic transducer can be told is called blind area, determines the minor increment between ultrasonic transducer.
In sum, transducer resonance frequency is selected herein: 35KHz ± 1.5KHz operating voltage: crest voltage < 1500v, working temperature :-20 ~+60 DEG C, pressure: 0.3MPa, angle: half-power angle: 9 °.
ATmega64 is a based on AVR kernel, adopts the enhancement mode Low-Power CMOS 8-bit microprocessor of risc architecture.Its most of instruction completes within a clock period, therefore has the data throughout up to 1MIPS/MHz, has the power consumption structure of optimization simultaneously, when low-power consumption is relatively less, also can carry out complicated process.Simultaneously its inside have the RC oscillator of multi-frequency, power on automatically reset, the function such as house dog, be integrated with A/D converter, PWM, SPI, USART, TWI, IIC communication interface and abundant interrupt resources simultaneously.
Ultrasound wave launched by ultrasonic transducer, ATmega64 single-chip microcomputer exports the excitation pulse signal of 35KHz by software programming, be transferred to the grid of field effect plumber RF640, speed-sensitive switch characteristic in conjunction with field effect transistor produces burst pulse, the shutoff of control transformer, pulse signal is output HIGH voltage pulse excitation signal after transformer boost, excitation transducers transmit ultrasonic waves.In order to accomplish to transmit and the time synchronisation of Received signal strength, we will transmit and be incorporated in receiving circuit, thus make often to organize transducer and accomplish time synchronized.Receiving circuit mainly carries out amplification filtering process to transponder pulse signal and Received signal strength, after receiving circuit process, acoustic signals converts the digital signal that single-chip microcomputer can process to, what enter ATmega64 catches input port, thus calculate the sound wave propagation time difference, be updated to fluid-velocity survey formulae discovery and go out corresponding line mean flow rate.Receiving circuit mainly comprises power amplification circuit, filter amplification circuit, voltage compare output circuit.
Above a kind of new flowmeter that the embodiment of the present invention provides is described in detail; for one of ordinary skill in the art; according to the thought of the embodiment of the present invention; all will change in specific embodiments and applications; in sum; this description should not be construed as the restriction to invention, and all any changes made according to design philosophy of the present invention are all within protection scope of the present invention.
Claims (1)
1. a new flowmeter, is characterized in that, it comprises: ultrasonic transducer, is used for launching and connecing hyperacoustic device; Radiating circuit, is used for driving transducers transmit ultrasonic waves; Receiving circuit, be used for received ultrasonic signal; Controller, carries out management to the modules of system and controls and carry out computing to data; Keyboard, is mainly arranged and the optimum configurations of instrument the physical environment parameter measured; Display module, can show real-time traffic numerical value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510444245.8A CN105157773A (en) | 2015-07-27 | 2015-07-27 | Novel flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510444245.8A CN105157773A (en) | 2015-07-27 | 2015-07-27 | Novel flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105157773A true CN105157773A (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510444245.8A Pending CN105157773A (en) | 2015-07-27 | 2015-07-27 | Novel flow meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542460A (en) * | 2019-09-03 | 2019-12-06 | 西安安森智能仪器股份有限公司 | multi-channel ultrasonic flowmeter transducer driving circuit and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080312534A1 (en) * | 2007-06-07 | 2008-12-18 | Kyriacos Pitsillides | System and method for power management in a telemetric monitoring system |
| CN201607257U (en) * | 2010-02-03 | 2010-10-13 | 深圳市格瑞斯特环保技术有限公司 | Ultrasonic open-channel flow meter |
| CN102980618A (en) * | 2012-12-09 | 2013-03-20 | 大连创达技术交易市场有限公司 | Ultrasonic flow detection device |
| CN202974355U (en) * | 2012-11-19 | 2013-06-05 | 北京华运电利载波技术有限公司 | Ultrasonic flow measurement device |
| CN104198001A (en) * | 2014-08-14 | 2014-12-10 | 青岛海诚自动化设备有限公司 | Mining ultrasonic pipeline flow measuring device and method |
-
2015
- 2015-07-27 CN CN201510444245.8A patent/CN105157773A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080312534A1 (en) * | 2007-06-07 | 2008-12-18 | Kyriacos Pitsillides | System and method for power management in a telemetric monitoring system |
| CN201607257U (en) * | 2010-02-03 | 2010-10-13 | 深圳市格瑞斯特环保技术有限公司 | Ultrasonic open-channel flow meter |
| CN202974355U (en) * | 2012-11-19 | 2013-06-05 | 北京华运电利载波技术有限公司 | Ultrasonic flow measurement device |
| CN102980618A (en) * | 2012-12-09 | 2013-03-20 | 大连创达技术交易市场有限公司 | Ultrasonic flow detection device |
| CN104198001A (en) * | 2014-08-14 | 2014-12-10 | 青岛海诚自动化设备有限公司 | Mining ultrasonic pipeline flow measuring device and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542460A (en) * | 2019-09-03 | 2019-12-06 | 西安安森智能仪器股份有限公司 | multi-channel ultrasonic flowmeter transducer driving circuit and control method thereof |
| CN110542460B (en) * | 2019-09-03 | 2021-07-27 | 西安安森智能仪器股份有限公司 | Multi-channel ultrasonic flowmeter transducer driving circuit and control method thereof |
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Addressee: Chen Qing Document name: the First Notification of an Office Action |
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Application publication date: 20151216 |
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