CN104198001B - Mining ultrasonic wave piping flow measurement apparatus and measuring method - Google Patents
Mining ultrasonic wave piping flow measurement apparatus and measuring method Download PDFInfo
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- CN104198001B CN104198001B CN201410399863.0A CN201410399863A CN104198001B CN 104198001 B CN104198001 B CN 104198001B CN 201410399863 A CN201410399863 A CN 201410399863A CN 104198001 B CN104198001 B CN 104198001B
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Abstract
The invention discloses a kind of mining ultrasonic wave piping flow measurement apparatus and measuring method.The device includes control module, time-to-digital converter module, pulsed drive module, transmitting ultrasonic transducer, reception ultrasonic transducer, analog switch module, Signal-regulated kinase, communication interface modules and power supply module;Control module is connected by spi bus with time-to-digital converter module, and time-to-digital converter module is connected with pulsed drive module, and pulsed drive module output end is connected with transmitting ultrasonic transducer;Analog switch module is connected with transmitting ultrasonic transducer, reception ultrasonic transducer respectively, and control module is by controlling the selection of analog switch module to receive the signal for receiving ultrasonic transducer;Receive ultrasonic transducer to be connected with Signal-regulated kinase, Signal-regulated kinase output end is connected with time-to-digital converter module;Communication interface modules is connected in control module.The present invention has the advantages of integrated level is high, low in energy consumption, reliability is high.
Description
Technical field
The present invention relates to a kind of mining ultrasonic wave piping flow measurement apparatus and use the mining ultrasonic wave pipeline stream
The measuring method of device is measured, underground coal mine is applicable not only to containing the more dangerous inflammable and explosive environment of gas and coal dust, also fits
For the industry such as coal, metallurgy, chemical industry, sewage disposal ground rugged environment.
Background technology
Ultrasonic wave piping flow device is measuring instrumentss, is played an important role in modern society.On the one hand, ultrasonic wave duct
Road flow apparatus is that accumulating management and the total amount metering of sewage exhaust gas measuring are adjusted in fluid trade of goods and materials;On the other hand, surpass
Sound wave pipeline flow apparatus is that process industry improves product quality and production efficiency, reduces cost and hydraulic engineering and environment guarantor
Shield etc. makees necessary flow detection and control.It can be seen that concern the oil of economic life line of the country, natural gas accumulating and concern
The fields such as the management of the people's livelihood and the water resource of Economic Sustainability sexual development are directed to flow measurement problem.
Ultrasonic flowmeter design can substantially be divided into using a large amount of discrete devices with using special measurement collection at present
Into the class of circuit two.Using in discrete device scheme, number of elements is numerous, debugging is complicated, reliability is low.Special survey in the market
It is seldom to measure integrated circuit, it is expensive substantially by external import.Therefore stream can not only be realized by designing a special chip
Gauge it is integrated, the cost of flowmeter can also be reduced, had great importance.
The content of the invention
For above-mentioned technical problem present in prior art, the present invention proposes a kind of mining ultrasonic wave piping flow and surveyed
Device is measured, there is the advantages of integrated level is high, low in energy consumption, reliability is high, simple to operate.
To achieve these goals, the present invention adopts the following technical scheme that:
Mining ultrasonic wave piping flow measurement apparatus, including control module, time-to-digital converter module, pulsed drive mould
Block, transmitting ultrasonic transducer, receive ultrasonic transducer, analog switch module, Signal-regulated kinase, communication interface modules and
Power supply module;Control module is connected by spi bus with time-to-digital converter module, time-to-digital converter module and pulsed drive
Module is connected, and pulsed drive module output end is connected with transmitting ultrasonic transducer;Analog switch module is ultrasonic with transmitting respectively
Wave transducer, ultrasonic transducer connection is received, control module is super by controlling the selection of analog switch module to receive the reception
The signal of acoustic wave transducer;Receive ultrasonic transducer to be connected with Signal-regulated kinase, Signal-regulated kinase output end and time
Data-converting block connects;Communication interface modules is connected in control module.
Further, above-mentioned power supply module uses 24V essential safety sources.
Further, above-mentioned flow measurement device is arranged in a closed housing.
Further, above-mentioned housing is metal or nonmetallic manufactured closed container.
Further, above-mentioned pulsed drive module uses TC4426 driving chips and TC4427 driving chips.
Further, above-mentioned analog switch module uses four-way analog switch chip, analog switch chip model
DG403DYZ。
Further, above-mentioned Signal-regulated kinase is made up of amplifying circuit and filter circuit.
Further, it is also associated with sound and light alarm module in above-mentioned control module.
It is another object of the present invention to propose a kind of mining ultrasonic wave piping flow measuring method, it uses following skill
Art scheme:
Using the measuring method of above-mentioned mining ultrasonic wave piping flow measurement apparatus, comprise the following steps:
A, transmitting ultrasonic transducer is used as positioned at the ultrasonic sensor of fluid upstream by the selection of analog switch module,
Ultrasonic sensor positioned at downstream fluid is located at the difference of fluid as ultrasonic sensor, two ultrasonic sensors are received
Side;
Control module control time data-converting block starts timing and sends pulse signal, pulse to pulsed drive module
Signal reaches transmitting ultrasonic transducer by pulsed drive module;Transmitting ultrasonic transducer receives above-mentioned pulse signal
Afterwards, launch ultrasonic wave, receive ultrasonic transducer and be in reception state, the ultrasonic signal received passes through Signal-regulated kinase
Entry time data-converting block after power amplification and filtering, the signal for selecting waveform to terminate as timing;Control module is read
Take timing start to timing terminate between ultrasonic wave flight time, measure propagation time during following current;
B, transmitting ultrasonic transducer is used as positioned at the ultrasonic sensor of downstream fluid by the selection of analog switch module,
Ultrasonic sensor positioned at fluid upstream is located at the difference of fluid as ultrasonic sensor, two ultrasonic sensors are received
Side;
Control module control time data-converting block starts timing and sends pulse signal, pulse to pulsed drive module
Signal reaches transmitting ultrasonic transducer by pulsed drive module;Transmitting ultrasonic transducer receives above-mentioned pulse signal
Afterwards, launch ultrasonic wave, receive ultrasonic transducer and be in reception state, the ultrasonic signal received passes through Signal-regulated kinase
Entry time data-converting block after power amplification and filtering, the signal for selecting waveform to terminate as timing;Control module is read
Take timing start to timing terminate between ultrasonic wave flight time, measure propagation time during adverse current;
C, the flow velocity of fluid in pipeline is measured by calculating propagation time difference of the ultrasonic wave in following current and adverse current, then
The flow of fluid into pipeline.
The invention has the advantages that:
The present invention includes control module, time-to-digital converter module, pulsed drive module, a pair of ultrasonic transducers, mould
Intend switch module, Signal-regulated kinase, communication interface modules and power supply module, and calculated using time difference method measuring principle in pipeline
Fluid flow, there is non-contact measurement, the advantages of integrated level is high, low in energy consumption, reliability is high, simple to operate, can pacify
There is the place of requirement of explosion proof mounted in underground coal mine, industrial and mining enterprises.
Brief description of the drawings
Fig. 1 is the system block diagram of mining ultrasonic wave piping flow measurement apparatus in the present invention;
Fig. 2 is the measuring principle figure of mining ultrasonic wave piping flow measurement apparatus in the present invention;
Fig. 3 is the circuit theory diagrams of pulsed drive module.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is described in further detail to the present invention:
With reference to shown in Fig. 1, mining ultrasonic wave piping flow measurement apparatus, including control module, time-to-digital converter module,
Pulsed drive module, transmitting ultrasonic transducer, receive ultrasonic transducer, analog switch module, Signal-regulated kinase, communication
Interface module and power supply module, it is preferable that power supply module uses 24V essential safety sources.
Control module is connected by spi bus with time figure module TDC-GP22, time-to-digital converter module and pulse
Drive module connects, the output end connection transmitting ultrasonic transducer of pulsed drive module.Analog switch module respectively with transmitting
Ultrasonic transducer, ultrasonic transducer connection is received, control module connects by controlling described in the selection reception of analog switch module
Receive signal, the signal of shielding transmitting ultrasonic transducer of ultrasonic transducer.
Receive ultrasonic transducer to be connected with Signal-regulated kinase, Signal-regulated kinase output end and time-to-digital converter mould
Block is connected, the output signal entry time data-converting block of Signal-regulated kinase, and the obtained time is entered single by spi bus
Piece machine;Communication interface modules is connected in control module, specifically, communication interface modules can use RS485 communication interfaces electricity
Road, control module are communicated by communication interface modules with computer.Sound and light alarm module is also associated with control module.
Preferably, flow measurement device is arranged in a closed housing, realizes flow measurement device fluid flow
Non-contact measurement.Specifically, housing be using metal or it is nonmetallic made of meet the closed of coal mine downhole safety specification
Container.
Preferably, pulsed drive module uses TC4426 driving chips and TC4427 driving chips.TC4426 driving chips
It is 30Vpp that pulse signal can be amplified to positive and negative electrode pulse amplitude with TC4427 driving chips.
Preferably, analog switch module uses four-way analog switch chip, analog switch chip model DG403DYZ.
Analog switch module can select to receive ultrasonic transducer, adjust the signal entering signal that reception ultrasonic transducer receives
Module is managed, and the signal for launching ultrasonic transducer is unable to entering signal conditioning module, plays the work of switching ultrasonic transducer
With.
Preferably, Signal-regulated kinase is made up of amplifying circuit and filter circuit.Signal-regulated kinase will be ultrasonic from receiving
The signal that wave transducer receives is amplified and filtered, by the signal entry time data-converting block for amplifying and filtering
TDC-GP22, the flight time of ultrasonic wave in the duct is obtained, the time is calculated by time-to-digital converter module TDC-GP22,
The degree of accuracy is high, and resolution ratio can reach ps levels.
With reference to shown in Fig. 2 and Fig. 3, mining ultrasonic wave piping flow measurement apparatus, using time difference method measuring principle, calculating
That cross-section of pipeline flow velocity is integrated in time during flow in pipeline, particularly refer to be by integral and calculating is discrete
1 instantaneous velocity is measured per 10ms.The detailed process of flow velocity measurement is every time:
The propagation time of following current is surveyed, now ultrasonic transducer A is transmitting ultrasonic transducer, and ultrasonic transducer B is
Ultrasonic transducer is received, control module control analog switch module selection receives ultrasonic transducer B signal, shielding ultrasound
Wave transducer A signal, while control module control time data-converting block TDC-GP22 sends START signal and starts meter
When, while time-to-digital converter module TDC-GP22 FIRE-UP pin can send pulse signal, frequency 1MHz, then pulse
Signal reaches ultrasonic transducer A by pulsed drive module, and now ultrasonic transducer A positive and negative electrode pulse amplitude is
30Vpp, ultrasonic transducer A launch ultrasonic wave, and now, ultrasonic transducer B is in reception state, and the ultrasonic wave received is micro-
Weak ultrasonic signal, after carrying out power amplification and filtering by Signal-regulated kinase, satisfactory signal is obtained, now,
Signal entry time data-converting block TDC-GP22, the STOP signals for selecting waveform to terminate as timing, control module are read
START signal is the propagation time of following current to the flight time between STOP signals.
After the certain time-delay time, switch the state of two ultrasonic transducers, that is, allow ultrasonic transducer A to connect
Ultrasonic transducer is received, ultrasonic transducer B is generation ultrasonic transducer, now, time-to-digital converter module TDC-GP22
FIRE-DOWN pin can launch pulse signal, and FIRE-UP pin will not launch pulse signal, repeat said process, you can measure
Propagation time of the ultrasonic wave in adverse current.By ultrasonic wave in the propagation time difference of following current and adverse current can measure pipeline fluid
Flow velocity, can then obtain the flow of fluid.
Certainly, described above is only presently preferred embodiments of the present invention, and the present invention is not limited to enumerate above-described embodiment, should
When explanation, any those skilled in the art are all equivalent substitutes for being made, bright under the guidance of this specification
Aobvious variant, all falls within the essential scope of this specification, ought to be protected by the present invention.
Claims (2)
1. mining ultrasonic wave piping flow measurement apparatus, it is characterised in that including control module, time-to-digital converter module, arteries and veins
Rush drive module, transmitting ultrasonic transducer, receive ultrasonic transducer, analog switch module, Signal-regulated kinase, communication connect
Mouth mold block and power supply module;Control module is connected by spi bus with time-to-digital converter module, time-to-digital converter module with
Pulsed drive module is connected, and pulsed drive module output end is connected with transmitting ultrasonic transducer;Analog switch module respectively with
Launch ultrasonic transducer, receive ultrasonic transducer connection, control module is by controlling the selection of analog switch module to receive institute
State the signal for receiving ultrasonic transducer;Receive ultrasonic transducer to be connected with Signal-regulated kinase, Signal-regulated kinase output
End is connected with time-to-digital converter module;Communication interface modules is connected in control module;The power supply module is using 24V essence
Safety power supply;The flow measurement device is arranged in a closed housing;Housing is using metal or nonmetallic manufactured
Meet the closed container of coal mine downhole safety specification;Described housing is metal or nonmetallic manufactured closed container;The arteries and veins
Drive module is rushed using TC4426 driving chips and driving TC4427 driving chips;The analog switch module uses four-way mould
Intend switch chip, analog switch chip model DG403DYZ;The Signal-regulated kinase is by amplifying circuit and filter circuit group
Into;Sound and light alarm module is also associated with the control module;Time-to-digital converter module uses time-to-digital converter module
TDC-GP22;Time-to-digital converter module TDC-GP22 FIRE-UP pin are connected respectively to TC4426 by signal wire and drive core
On 2 pin of piece and TC4427 driving chips, time-to-digital converter module TDC-GP22 FIRE-DOWN pin are distinguished by signal wire
It is connected on 4 pin of TC4426 driving chips and TC4427 driving chips;The 1 of TC4426 driving chips and TC4427 driving chips
Pin and 8 pin are suspended state, and 3 pin of TC4426 driving chips and TC4427 driving chips are grounded, TC4426 driving chips
15V voltages are connected with 6 pin of TC4427 driving chips;7 pin of TC4426 driving chips are connected with one by two by signal wire
The parallel branch one of pole pipe D1 and diode D2 compositions, diode D1 and diode D2 arranged direction are on the contrary, in parallel branch
One output end is grounded by resistance R1, and signal output port DN- is additionally provided with the output end of parallel branch one;TC4426 drives
5 pin of chip are connected with a parallel branch two being made up of diode D3 and diode D4 by signal wire, diode D3 and
Diode D4 arranged direction is on the contrary, the output end in parallel branch two is grounded by resistance R2, in the output of parallel branch two
End is additionally provided with signal output port UP-;7 pin of TC4427 driving chips are connected with one by diode D5 and two by signal wire
The parallel branch three of pole pipe D6 compositions, diode D5 and diode D6 arranged direction on the contrary, parallel branch three output end
It is grounded by resistance R3, signal output port DN+ is additionally provided with the output end of parallel branch three;5 pin of TC4427 driving chips
One parallel branch four being made up of diode D7 and diode D8 is connected with by signal wire, diode D7 and diode D8's
Arranged direction is additionally provided with letter on the contrary, the output end in parallel branch four is grounded by resistance R4 in the output end of parallel branch four
Number output port UP+;Also set on connection line of 6 pin of TC4426 driving chips and TC4427 driving chips with 15V voltages
By a parallel branch five being made up of electric capacity C9 and electric capacity C10, electric capacity C9 and electric capacity C10 other end ground connection;Diode D1,
D2, D3, D4, D5, D6, D7 and D8 use 1N4148 series of high speed switching diodes.
2. the measuring method of mining ultrasonic wave piping flow measurement apparatus according to claim 1, it is characterised in that including
Following steps:
A, transmitting ultrasonic transducer is used as positioned at the ultrasonic sensor of fluid upstream by the selection of analog switch module, be located at
The ultrasonic sensor of downstream fluid is located at the not homonymy of fluid as ultrasonic sensor, two ultrasonic sensors are received;
Control module control time data-converting block starts timing and sends pulse signal, pulse signal to pulsed drive module
Transmitting ultrasonic transducer is reached by pulsed drive module;After transmitting ultrasonic transducer receives above-mentioned pulse signal, hair
Ultrasonic wave is penetrated, ultrasonic transducer is received and is in reception state, the ultrasonic signal received passes through Signal-regulated kinase power
Entry time data-converting block after amplification and filtering, the signal for selecting waveform to terminate as timing;Control module reads meter
When start to timing terminate between ultrasonic wave flight time, measure propagation time during following current;
B, transmitting ultrasonic transducer is used as positioned at the ultrasonic sensor of downstream fluid by the selection of analog switch module, be located at
The ultrasonic sensor of fluid upstream is located at the not homonymy of fluid as ultrasonic sensor, two ultrasonic sensors are received;
Control module control time data-converting block starts timing and sends pulse signal, pulse signal to pulsed drive module
Transmitting ultrasonic transducer is reached by pulsed drive module;After transmitting ultrasonic transducer receives above-mentioned pulse signal, hair
Ultrasonic wave is penetrated, ultrasonic transducer is received and is in reception state, the ultrasonic signal received passes through Signal-regulated kinase power
Entry time data-converting block after amplification and filtering, the signal for selecting waveform to terminate as timing;Control module reads meter
When start to timing terminate between ultrasonic wave flight time, measure propagation time during adverse current;
C, the flow velocity of fluid in pipeline is measured by calculating propagation time difference of the ultrasonic wave in following current and adverse current, then obtains pipe
The flow of fluid in road.
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Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105157773A (en) * | 2015-07-27 | 2015-12-16 | 陈庆 | Novel flow meter |
CN107218980A (en) * | 2016-03-21 | 2017-09-29 | 深圳市兴源智能仪表股份有限公司 | Full digital device for measuring ultrasonic wave flow |
CN107478305A (en) * | 2017-07-10 | 2017-12-15 | 辽宁航宇星物联仪表科技有限公司 | Ultrasonic wave gas meter measurement apparatus based on TDC7200 and TDC1000 |
CN107290564B (en) * | 2017-07-28 | 2020-02-04 | 电子科技大学 | Phase difference-based ultrasonic flow velocity measurement method |
CN107588815A (en) * | 2017-10-19 | 2018-01-16 | 贵州大学 | A kind of non-contact type ultrasonic gas flow monitoring device and monitoring method |
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US5115670A (en) * | 1990-03-09 | 1992-05-26 | Chevron Research & Technology Company | Measurement of fluid properties of two-phase fluids using an ultrasonic meter |
CN102272560A (en) * | 2009-01-06 | 2011-12-07 | 松下电器产业株式会社 | Flow rate measurement device |
CN202693049U (en) * | 2011-04-14 | 2013-01-23 | 松下电器产业株式会社 | Flow measurement device |
CN203274819U (en) * | 2013-05-23 | 2013-11-06 | 上海贝岭股份有限公司 | Liquid measurement SoC chip based on ultrasonic technology |
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US5115670A (en) * | 1990-03-09 | 1992-05-26 | Chevron Research & Technology Company | Measurement of fluid properties of two-phase fluids using an ultrasonic meter |
CN102272560A (en) * | 2009-01-06 | 2011-12-07 | 松下电器产业株式会社 | Flow rate measurement device |
CN202693049U (en) * | 2011-04-14 | 2013-01-23 | 松下电器产业株式会社 | Flow measurement device |
CN203274819U (en) * | 2013-05-23 | 2013-11-06 | 上海贝岭股份有限公司 | Liquid measurement SoC chip based on ultrasonic technology |
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