CN105444831A - Ultrasonic flowmeter - Google Patents

Ultrasonic flowmeter Download PDF

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Publication number
CN105444831A
CN105444831A CN201510963051.9A CN201510963051A CN105444831A CN 105444831 A CN105444831 A CN 105444831A CN 201510963051 A CN201510963051 A CN 201510963051A CN 105444831 A CN105444831 A CN 105444831A
Authority
CN
China
Prior art keywords
ultrasonic
receiver
signal processing
processing unit
flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510963051.9A
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Chinese (zh)
Inventor
徐玉峰
张震德
尹云东
李莎莎
刘宗岳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aucma Co Ltd
Original Assignee
Aucma Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aucma Co Ltd filed Critical Aucma Co Ltd
Priority to CN201510963051.9A priority Critical patent/CN105444831A/en
Publication of CN105444831A publication Critical patent/CN105444831A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
    • G01F1/66Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow by measuring frequency, phaseshift, or propagation time of electromagnetic or other waves, e.g. ultrasonic flowmeters

Abstract

The invention discloses an ultrasonic flowmeter, and particularly relates to the field of ultrasonic passenger flow volume collection devices. The defects that according to existing passenger flow volume measurement, a measuring element needs to be installed at a passenger passing position, and dynamic state of passenger flow is likely to be changed are overcome. The ultrasonic flowmeter comprises an ultrasonic transmitting transducer and a receiver. The ultrasonic transmitting transducer and the receiver are each provided with a piezoelectric element. The ultrasonic transmitting transducer is connected with an ultrasonic transmitting unit. The receiver is connected with a signal processing unit. The signal processing unit comprises a calculation instrument and a signal amplifier. The ultrasonic transmitting unit and the signal processing unit are connected with a microprocessor control unit. A display device is connected to the microprocessor control unit. The ultrasonic transmitting transducer is made of piezoelectric materials. The display device comprises a computer.

Description

A kind of ultrasonic flow meter
Technical field
The present invention relates to ultrasound wave volume of the flow of passengers gathering-device field, be specifically related to a kind of ultrasonic flow meter.
Background technology
Start to carry out flow rate test to liquid as far back as 17th century people.Flow rate test technical development till now, not only be confined to liquid testing, people can be skilled grasp to the test of gas flow, and method of testing is unequal to especially piece lifting, as propagation speed differential method, beam deviation send out, Doppler method, spatial filtering method etc.The early stage flow test facility major part of China is that we have grasped this technology accurately now by import, and go into operation rapidly process industrial, energy meter, municipal service, this also impels flow instrument to develop rapidly.Microelectric technique and developing by leaps and bounds of computer technology have promoted the update of flow instrument especially greatly, and new flow instrument also emerges like the mushrooms after rain.
The flow rate information of fluid on just carrying when ultrasound wave is propagated in the fluid flowed.Therefore the ultrasound wave by receiving just can detect the flow velocity of fluid, thus is converted into flow.Ultrasonic pulse arrives another sensor through pipeline from a sensor.When gas does not flow, ultrasonic pulse is propagated in the two directions with identical speed.If ducted gas has certain flow velocity (flow velocity is necessarily greater than zero), then along the ultrasonic pulse of flowing can transmit faster, and the ultrasonic pulse in reverse flow direction can be slow.Such following current transmission time can be shorter, and the countercurrent time can be longer.According to relevant computing method, calculate flow.
At commercial cold chain to flow of the people fields of measurement, main employing installs and measures original paper the stream of people through place, measure data that original paper measures to spread out of and carry out analysis to controller and draw measurement result, easily change the dynamic of the stream of people the stream of people through going out to install and measure original paper, the installation and maintenance of measuring original paper are all easily influenced.
Summary of the invention
The object of the invention is to install and measure element the stream of people through place for existing people's flow measurement needs, the easy change stream of people is not enough dynamically, propose a kind of by ultrasonic unit being arranged on commercial cold chain, the fluid flowing that ultrasonic unit can produce human motion detects, and can not affect dynamic a kind of ultrasonic flow meter of the stream of people.
The present invention specifically adopts following technical scheme:
A kind of ultrasonic flow meter, comprise ultrasound transmitting transducer and receiver, in described ultrasound transmitting transducer and receiver, all piezoelectric element is set, described ultrasound transmitting transducer connects ultrasonic transmitting element, described receiver connection signal processing unit, described signal processing unit comprises calculating instrument, described calculating instrument receives and processes the flow signal of receiver reception, described ultrasonic transmitting element is connected microprocessor control unit with signal processing unit, and described microprocessor control unit connects display device.
Preferably, described ultrasound transmitting transducer adopts piezoelectric to make.
Preferably, described display device comprises computer.
Preferably, described signal processing unit comprises signal amplifier, the flow signal that described signal amplifier amplification receiver receives.
The beneficial effect that the present invention has is: be arranged on by this ultrasonic flow meter on commercial cold chain, when client through business machine time, the fluid flowing that ultrasonic flow meter can produce human motion detects, and by calculating, be translated into digital signal or simulating signal, expressed intuitively by display device, the number detecting process intuitively can be facilitated, directly calculate the volume of the flow of passengers of each time period, be applicable to measure not easily contact and the fluid not easily observed and large-caliber flow; Element need not be installed and measured in a fluid, can not the flow state of alter, do not produce additional drag, the installation and maintenance of test component all do not affect measuring process.
Accompanying drawing explanation
Fig. 1 is a kind of ultrasonic flow meter schematic diagram;
Fig. 2 is a kind of ultrasonic flow meter theory structure block diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, the specific embodiment of the present invention is described further:
As shown in Figure 1-2, a kind of ultrasonic flow meter, comprise ultrasound transmitting transducer and receiver, in described ultrasound transmitting transducer and receiver, all piezoelectric element is set, ultrasound transmitting transducer adopts piezoelectric to make, described ultrasound transmitting transducer connects ultrasonic transmitting element, receiver connection signal processing unit, signal processing unit comprises calculating instrument and signal amplifier, calculate instrument to receive and the flow signal processing receiver reception, the flow signal that signal amplifier amplification receiver receives.Ultrasonic transmitting element is connected microprocessor control unit with signal processing unit, and microprocessor control unit connects display device, and display device comprises for brain.
The principle of work of this ultrasonic flow meter is: be arranged on by this ultrasonic flow meter on commercial cold chain, when client through business machine time, the fluid flowing that ultrasonic flow meter can produce human motion detects, and by calculating, be translated into digital signal or simulating signal, expressed the number detecting process by display device intuitively.
The flow rate information of fluid on just carrying when ultrasound wave is propagated in the fluid flowed.Therefore the ultrasound wave by receiving just can detect the flow velocity of fluid, thus is converted into flow.Ultrasonic pulse arrives another sensor through pipeline from a sensor.When gas does not flow, ultrasonic pulse is propagated in the two directions with identical speed.If ducted gas has certain flow velocity (flow velocity is necessarily greater than zero), then along the ultrasonic pulse of flowing can transmit faster, and the ultrasonic pulse in reverse flow direction can be slow.Such following current transmission time can be shorter, and the countercurrent time can be longer.According to relevant computing method, calculate flow.
Ultrasound transmitting transducer converts electrical energy into ultrasonic energy, and be transmitted in tested fluid, the ultrasonic signal that receiver receives, the electric signal representing flow is converted to through signal processing unit, be supplied to calculating instrument to calculate, reflect intuitively finally by display device (as computer).What ultrasonic transducer adopted is piezoelectric, utilizes piezoelectric effect and in conjunction with suitable radiating circuit, electric energy is added on the piezoelectric element of transmitting transducer, making it produce ultrasound waves and shake.Ultrasound wave is injected in fluid at an angle and is propagated, and is then received by receiver, and becomes electric energy through piezoelectric element, to detect.Transmitting transducer utilizes the inverse piezoelectric effect of piezoelectric element, and receiver then utilizes piezoelectric effect.
When have people by time, transducer, converts the pressure experienced to current signal and is loaded into ultrasonic transmitting element, makes it produce ultrasound waves and shakes.At this moment ultrasound wave is injected in the stream of people with certain angle and is propagated, and is then received by receiver, then becomes electric energy from piezoelectric element, after signal processing unit processes, via Subsequent electronic circuit arrangement, calculates until be sent to computer and demonstrate stream of people's quantity.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited in above-mentioned citing, and the change that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement also should belong to protection scope of the present invention.

Claims (4)

1. a ultrasonic flow meter, it is characterized in that, comprise ultrasound transmitting transducer and receiver, in described ultrasound transmitting transducer and receiver, all piezoelectric element is set, described ultrasound transmitting transducer connects ultrasonic transmitting element, described receiver connection signal processing unit, described signal processing unit comprises calculating instrument, described calculating instrument receives and processes the flow signal of receiver reception, described ultrasonic transmitting element is connected microprocessor control unit with signal processing unit, and described microprocessor control unit connects display device.
2. a kind of ultrasonic flow meter as claimed in claim 1, is characterized in that, described ultrasound transmitting transducer adopts piezoelectric to make.
3. a kind of ultrasonic flow meter as claimed in claim 1, is characterized in that, described display device comprises computer.
4. a kind of ultrasonic flow meter as claimed in claim 1, is characterized in that, described signal processing unit comprises signal amplifier, the flow signal that described signal amplifier amplification receiver receives.
CN201510963051.9A 2015-12-18 2015-12-18 Ultrasonic flowmeter Pending CN105444831A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510963051.9A CN105444831A (en) 2015-12-18 2015-12-18 Ultrasonic flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510963051.9A CN105444831A (en) 2015-12-18 2015-12-18 Ultrasonic flowmeter

Publications (1)

Publication Number Publication Date
CN105444831A true CN105444831A (en) 2016-03-30

Family

ID=55555296

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510963051.9A Pending CN105444831A (en) 2015-12-18 2015-12-18 Ultrasonic flowmeter

Country Status (1)

Country Link
CN (1) CN105444831A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110455360A (en) * 2019-08-28 2019-11-15 杭州乾博科技有限公司 A kind of ultrasonic water meter

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1360288A (en) * 2001-11-28 2002-07-24 南京师范大学 Equipment using ultrasonic detector to record passenger throughput of bus
CN1363900A (en) * 2001-11-28 2002-08-14 南京师范大学 Method and device for counting passengers of bus
CN102354386A (en) * 2011-10-08 2012-02-15 陈瑞斌 College intelligent dining room system
CN202948492U (en) * 2012-11-03 2013-05-22 哈尔滨理工大学 Dense region pedestrian flow statistics device with intelligent monitoring
CN203225017U (en) * 2013-04-27 2013-10-02 赵琰 System for controlling traffic guidance robot

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1360288A (en) * 2001-11-28 2002-07-24 南京师范大学 Equipment using ultrasonic detector to record passenger throughput of bus
CN1363900A (en) * 2001-11-28 2002-08-14 南京师范大学 Method and device for counting passengers of bus
CN102354386A (en) * 2011-10-08 2012-02-15 陈瑞斌 College intelligent dining room system
CN202948492U (en) * 2012-11-03 2013-05-22 哈尔滨理工大学 Dense region pedestrian flow statistics device with intelligent monitoring
CN203225017U (en) * 2013-04-27 2013-10-02 赵琰 System for controlling traffic guidance robot

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王雅芳: "《传感器原理与实用技术》", 31 July 2014, 机械工业出版社 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110455360A (en) * 2019-08-28 2019-11-15 杭州乾博科技有限公司 A kind of ultrasonic water meter

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Application publication date: 20160330

RJ01 Rejection of invention patent application after publication