CN107631768A

CN107631768A - A kind of high precision wireless pipeline flowmeter

Info

Publication number: CN107631768A
Application number: CN201710923058.7A
Authority: CN
Inventors: 王中国
Original assignee: Chengdu Zunhua Rongyu Technology Co Ltd
Current assignee: Chengdu Zunhua Rongyu Technology Co Ltd
Priority date: 2017-09-30
Filing date: 2017-09-30
Publication date: 2018-01-26

Abstract

The invention discloses a kind of high precision wireless pipeline flowmeter, including wireless communication module, control module, D/A converter module, amplifying circuit, first transducer, second transducer, the signal conditioning circuit being electrically connected with successively；The signal conditioning circuit is also connected with control module；The control module for being responsible for system sequence control, drive signal generation, the FPGA minimum systems that echo-signal stores and gating passage switches and the DSP minimum systems for calculating propagation time, instantaneous delivery and integrated flux mainly by forming；The control module of flowmeter is made up of FPGA minimum systems and DSP minimum systems, realize the high speed storing and high speed processing of signal, and the degree of accuracy that high-precision result of calculation high degree improves flowmeter can be obtained, and used setting wireless communication module, help user remotely to monitor, improve operating efficiency.

Description

A kind of high precision wireless pipeline flowmeter

Technical field

The present invention relates to field of flow meters, is a kind of high precision wireless pipeline flowmeter specifically.

Background technology

Ultrasonic flowmeter is a kind of contactless instrument, and the rate-of flow that it can both measure Large Diameter Pipeline can be used for The measurement of medium for being not easy to contact and observing.Its accuracy of measurement is very high, hardly by measured medium various parameters it is dry Disturb, it is particularly possible to solve other instrument can not severe corrosive, non-conductive, radioactivity and inflammable and explosive medium flow measurement Problem.

Existing ultrasonic flow instrument is that the instrument of fluid flow in pipe is measured for principle with " speed difference method ".It Advanced multi-pulse techniques, signal digital processing technology and error correcting technique are employed, flow instrument is suitable for industry existing The environment of field, metering are more convenient, economical, accurate.Product reaches domestic and international advanced level, can be widely applied to oil, chemical industry, smelting The fields such as gold, electric power, plumbing.

The flow monitoring of pipeline is typically all that flow detector is installed on pipeline, and it is all directly aobvious at it to read data Showing device is being read, and is then analyzed and processed again, very inconvenient, and this must all be detected at the scene, be considerably increased The burden of staff, reduce its operating efficiency.And it detects accuracy and need to be improved.

The content of the invention

, can not only wireless remote inquiry pipeline stream it is an object of the invention to provide a kind of high precision wireless pipeline flowmeter The parameter of amount, and be improved significantly in detection accuracy.

The present invention is achieved through the following technical solutions：A kind of high precision wireless pipeline flowmeter, including be electrically connected with successively Wireless communication module, control module, D/A converter module, amplifying circuit, first transducer, second transducer, signal condition Circuit；The signal conditioning circuit is also connected with control module；The control module is mainly by for being responsible for system sequence control System, drive signal generation, echo-signal store and gated the FPGA minimum systems of passage switching and for calculating propagation time, wink The DSP minimum systems of Shi Liuliang and integrated flux form；The signal conditioning circuit include be sequentially connected voltage amplifier circuit, Bandwidth-limited circuit, from gain amplifying circuit, analog-to-digital conversion module.

When it is used：DSP minimum systems send sign on to FPGA minimum systems first in control module, and FPGA is by Excitation signal waveforms in portion's storage, to analog-to-digital conversion module, are incited somebody to action with previously given speed rates after analog-to-digital conversion module The data signal that FPGA is provided is converted to analog signal.The analog signal is retransmited to amplifying circuit by voltage amplification, power Drive signal circuit is controlled via FPGA minimum systems again after amplification, transformer isolation amplification, drives two-way transmitting transducer. Due to the piezo-electric effect of transducer, two-way echo-signal is produced.The echo-signal that echo-signal controls via FPGA is input to again Signal conditioning circuit, amplify the modulus having again afterwards in signal conditioning circuit by voltage amplification, bandpass filtering, from gain successively Analog signal is converted into data signal by modular converter, after above procedure is repeated four times, obtains the echo-signal of eight passages, The echo-signal of eight passages is once stored in FPGA memory module again, sends to DSP minimum systems, DSP and enters line number Word signal transacting, complete flow rate calculation and result output.The result of output by wireless communication module, passes through radio communication mold again Block sends remote data to user terminal, allows user to realize remote monitoring.

Also include power module in this flowmeter, 24V DC voltages are converted into the operating voltage corresponding to modules It is powered, because power module is very existing, is also not belonging to lay special stress on protecting object herein, is intended to do not doing excessive narration.

In order to preferably realize the present invention, further, the FPGA minimum systems include chip EP4CE10E22C8N, Respectively with the reset circuit, the first clock circuit, Flash memory modules of chip EP4CE10E22C8N electric connections, pass through chip To whole flow meters work process the good controls of EP4CE10E22C8N, reset circuit, the first clock circuit, Flash storage moulds Block ensures the stable normal operation of its FPGA minimum system, can also recover in time even if error.

In order to preferably realize the present invention, further, the DSP minimum systems include chip TMSF320F28335, divided Second clock circuit, FRAM, the watchdog circuit not being electrically connected with chip TMSF320F28335, pass through chip TMSF320F28335 ensures the high-precision accuracy of its arithmetic system, its second clock circuit, FRAM, watchdog circuit, ensures The stable normal operation of DSP minimum systems, can also recover in time even if error.

In order to preferably realize the present invention, further, the wireless communication module is bluetooth communication module HC-06.It is logical Cross bluetooth communication module HC-06 and realize radio communication function, not only cost is not high but also information transfer is stable.

The present invention compared with prior art, has advantages below and beneficial effect：

The present invention is made up of the control module of flowmeter FPGA minimum systems and DSP minimum systems, realizes the high speed of signal Storage and high speed processing, and the degree of accuracy that high-precision result of calculation high degree improves flowmeter can be obtained, and Used setting wireless communication module, help user remotely to monitor, improve operating efficiency.

Brief description of the drawings

Fig. 1 is the theory diagram of the present invention.

Embodiment

Embodiment 1：

A kind of high precision wireless pipeline flowmeter of the present embodiment, as shown in Figure 1：A kind of high precision wireless pipeline flowmeter, bag Include the wireless communication module being electrically connected with successively, control module, D/A converter module, amplifying circuit, first transducer, second change Can device, signal conditioning circuit；The signal conditioning circuit is also connected with control module；The control module is mainly by for bearing Blame the FPGA minimum systems of system sequence control, drive signal generation, echo-signal storage and gating passage switching and based on Calculate the DSP minimum systems composition of propagation time, instantaneous delivery and integrated flux；The signal conditioning circuit includes what is be sequentially connected Voltage amplifier circuit, bandwidth-limited circuit, from gain amplifying circuit, analog-to-digital conversion module.

When it is used：DSP minimum systems send sign on to FPGA minimum systems first in control module, and FPGA is by Excitation signal waveforms in portion's storage, to analog-to-digital conversion module, are incited somebody to action with previously given speed rates after analog-to-digital conversion module The data signal that FPGA is provided is converted to analog signal.The analog signal is retransmited to amplifying circuit by voltage amplification, power Drive signal Emperor Xuantong's circuit is controlled via FPGA minimum systems again after amplification, transformer isolation amplification, driving two-way transmitting is changed Can device.Due to the piezo-electric effect of transducer, two-way echo-signal is produced.The echo-signal that echo-signal controls via FPGA is defeated again Enter to signal conditioning circuit, have again in signal conditioning circuit by voltage amplification, bandpass filtering, from after gain amplification successively Analog signal is converted into data signal by analog-to-digital conversion module, after above procedure is repeated four times, obtains the echo of eight passages Signal, then the echo-signal of eight passages is once stored in FPGA memory module, send to DSP minimum systems, DSP Row Digital Signal Processing, complete flow rate calculation and result output.The result of output by wireless communication module, passes through channel radio again Letter module sends remote data to user terminal, allows user to realize remote monitoring.

Embodiment 2：

The present embodiment does further optimization on the basis of embodiment 1, and the FPGA minimum systems include chip EP4CE10E22C8N, the reset circuit being electrically connected with respectively with chip EP4CE10E22C8N, the first clock circuit, Flash are deposited Module is stored up, passes through to whole flow meters work process the good controls of chip EP4CE10E22C8N, reset circuit, the first clock Circuit, Flash memory modules ensure the stable normal operation of its FPGA minimum system, can also recover in time even if error.

The DSP minimum systems include chip TMSF320F28335, are electrically connected with respectively with chip TMSF320F28335 Second clock circuit, FRAM, watchdog circuit, ensure that the high accuracy of its arithmetic system is accurate by chip TMSF320F28335 True property, its second clock circuit, FRAM, watchdog circuit, ensure the stable normal operation of DSP minimum systems, also can even if error Recover in time.

The wireless communication module is bluetooth communication module HC-06.Radio communication is realized by bluetooth communication module HC-06 Function, not only cost is not high but also information transfer is stable.

The other parts of the present embodiment are same as Example 1, therefore repeat no more.

It is described above, be only presently preferred embodiments of the present invention, any formal limitation not done to the present invention, it is every according to Any simply modification, the equivalent variations made according to the technical spirit of the present invention to above example, each fall within the protection of the present invention Within the scope of.

Claims

A kind of 1. high precision wireless pipeline flowmeter, it is characterised in that：Including be electrically connected with successively wireless communication module, control Module, D/A converter module, amplifying circuit, first transducer, second transducer, signal conditioning circuit；The signal condition electricity Road is also connected with control module；The control module is mainly by for being responsible for system sequence control, drive signal generation, echo Signal stores and gated the FPGA minimum systems of passage switching and for calculating propagation time, instantaneous delivery and integrated flux DSP minimum systems form；The signal conditioning circuit includes voltage amplifier circuit, certainly bandwidth-limited circuit, the increasing being sequentially connected Beneficial amplifying circuit, analog-to-digital conversion module.
A kind of 2. high precision wireless pipeline flowmeter according to claim 1, it is characterised in that：The FPGA minimum systems Including chip EP4CE10E22C8N, respectively with chip EP4CE10E22C8N be electrically connected with reset circuit, the first clock circuit, Flash memory modules.
A kind of 3. high precision wireless pipeline flowmeter according to claim 2, it is characterised in that：The DSP minimum systems The second clock circuit that is electrically connected with including chip TMSF320F28335, respectively with chip TMSF320F28335, FRAM, guard the gate Dog circuit.
A kind of 4. high precision wireless pipeline flowmeter according to claim 1, it is characterised in that：The wireless communication module For bluetooth communication module HC-06.