CN201828295U - Phase difference type ultrasonic wave flow metering device - Google Patents
Phase difference type ultrasonic wave flow metering device Download PDFInfo
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- CN201828295U CN201828295U CN2010205803827U CN201020580382U CN201828295U CN 201828295 U CN201828295 U CN 201828295U CN 2010205803827 U CN2010205803827 U CN 2010205803827U CN 201020580382 U CN201020580382 U CN 201020580382U CN 201828295 U CN201828295 U CN 201828295U
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Abstract
The utility model discloses a phase difference type ultrasonic wave flow metering device. The phase difference type ultrasonic wave flow metering device is characterized by comprising an ultrasonic wave energy converter A (3) and an ultrasonic wave energy converter B (4) which are arranged in a pipeline (6) or at the edge of the pipeline (6); the ultrasonic wave energy converter A (3) and the ultrasonic wave energy converter B (4) are connected with an ultrasonic wave emission driving circuit (2) and an ultrasonic wave phase difference method receiving processing circuit (5) which are controlled by a singlechip (1) through a multi-path selector or an analogue switch (10) which are controlled by the singlechip (1). The phase difference type ultrasonic wave flow metering device is realized by a discrete device, the metering is convenient and is not easy to be affected by the signal strength, the requirements to the singlechip are lower, the cost is low and the power consumption is low.
Description
Technical field
The utility model relates to a kind of phase-difference type ultrasonic flow metering device, particularly a kind of ultrasonic flow metering device that utilizes ultrasound wave principle test fluid flow or flow control.
Background technology
The velocity of propagation of ultrasound wave in a certain measuring media is relevant with the velocity of sound and fluid velocity in this medium, ultrasonic flow metering device be utilize ultrasound wave downstream and the inconsistent current-carrying effect principle of the velocity of propagation against the current measure rate of flow of fluid.Along with the cost of electronic component and the maturation of ultrasonic technique, the manufacturing cost of ultrasonic flow metering device reduces greatly, and this instrument has characteristics such as non-contact measurement, measurement range be wide, convenient for installation and maintenance, makes users more and more pay close attention to this novel flow metering mode.Existing ultrasonic flow meter instrument adopts the integrated time difference method chip of import to realize the metering of flow more, this method cost height, to the requirement height of single-chip microcomputer, and influenced greatly by the signal power.
The utility model content
The purpose of this utility model is, a kind of phase-difference type ultrasonic flow metering device is provided.It measures convenient, is difficult for being subjected to the signal power to influence, and lower to the requirement of single-chip microcomputer.
The technical solution of the utility model: a kind of phase-difference type ultrasonic flow metering device is characterized in that: comprise being installed in the pipeline or the ultrasonic transducer A and the ultrasonic transducer B at pipeline edge; Ultrasonic transducer A and ultrasonic transducer B through by monolithic processor controlled MUX or analog switch with linked to each other with ultrasound wave phase difference method receiving processing circuit by monolithic processor controlled ultrasonic emitting driving circuit.
In the aforesaid phase-difference type ultrasonic flow metering device, described ultrasonic emitting driving circuit comprises:
Frequency dividing circuit links to each other with single-chip microcomputer, and being used for provides frequency of operation to ultrasonic transducer A or ultrasonic transducer B;
Negative pressure produces circuit and sine wave generating circuit, is used for the frequency of operation that frequency dividing circuit provides is converted into the sinusoidal signal that drives ultrasonic transducer A or ultrasonic transducer B work;
MUX or analog switch link to each other with single-chip microcomputer, are used to control the duty of ultrasonic transducer A and ultrasonic transducer B.
Described frequency dividing circuit can be any circuit or integrated chip with division function; It can be any circuit or integrated chip that can produce the negative voltage function that have that described negative pressure produces circuit; Described sine wave generating circuit can be any circuit or integrated chip that can produce sine wave signal that have.
In the aforesaid phase-difference type ultrasonic flow metering device, described ultrasound wave phase difference method receiving processing circuit comprises:
Phase detector circuit is used to obtain phase signal F1 or F2 between signal S1 that ultrasonic transducer B or ultrasonic transducer A receive and the signal S2 identical with driving ultrasonic transducer A or ultrasonic transducer B emission work;
The F/V change-over circuit, the phase signal that phase detector circuit is drawn is converted into a stable voltage, and links to each other with single-chip microcomputer through the ADC analog to digital conversion circuit;
Frequency dividing circuit is used for providing and drive ultrasonic transducer A or ultrasonic transducer B to phase detector circuit and launches the identical signal S2 of work;
MUX or analog switch link to each other with single-chip microcomputer, are used to control the duty of ultrasonic transducer B and ultrasonic transducer A.
Aforesaid phase detector circuit can be anyly to have with functionally similar circuit of phase detector or integrated chip; Described F/V change-over circuit can be that any to have to be the circuit or the integrated chip of voltage with time (frequency) conversion of signals of pulsewidth; Described ADC analog to digital conversion circuit can be any circuit or integrated chip that analog signal conversion is the digital signal function that have, and also comprises the single-chip microcomputer of built-in ADC analog-digital conversion function.
In the aforesaid phase-difference type ultrasonic flow metering device, described ultrasonic transducer A and ultrasonic transducer B are the sensing device with ultrasonic emitting and receiving function.
Compared with prior art, the utility model uses discrete device to realize a kind of ultrasonic flow metering of phase-difference type, and not only metering is convenient, is difficult for being subjected to the signal power to influence, and is lower to the requirement of single-chip microcomputer, and has low cost, low-power consumption advantage.
Description of drawings
Fig. 1 is the circuit structure block diagram of the utility model embodiment;
Fig. 2 is ultrasonic transducer emission driving circuit structure block diagram;
Fig. 3 is a ultrasound wave phase difference method receiving processing circuit structured flowchart;
Fig. 4 is for realizing the signal waveform synoptic diagram of ultrasound wave phase difference method velocity measurement.
Being labeled as in the accompanying drawing:
The 1-single-chip microcomputer, 2-ultrasonic emitting driving circuit, 3-ultrasonic transducer A, 4-ultrasonic transducer B, 5-ultrasound wave phase difference method receiving processing circuit, 6-pipeline, 7-frequency dividing circuit, the 8-negative pressure produces circuit, the 9-sine wave generating circuit, 10-MUX or analog switch, 11-phase detector circuit, the 12-F/V change-over circuit, the 13-ADC analog to digital conversion circuit.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described, but not as the foundation to the utility model restriction.
Embodiment.A kind of phase-difference type ultrasonic flow metering device as shown in Figure 1, comprises being installed in the pipeline 6 or the ultrasonic transducer A3 and the ultrasonic transducer B4 at pipeline 6 edges; Ultrasonic transducer A3 links to each other with ultrasound wave phase difference method receiving processing circuit 5 with the ultrasonic emitting driving circuit of being controlled by single-chip microcomputer 12 through MUX or the analog switch of being controlled by single-chip microcomputer 1 10 with ultrasonic transducer B4.When measuring the following current phase differential, suppose that ultrasonic transducer A3 switches to the emission duty, then ultrasonic transducer B4 switches to the reception duty.When measuring the adverse current phase differential, otherwise ultrasonic transducer B4 switches to the emission duty, and then ultrasonic transducer A3 switches to the reception duty.The duty of switching is finished by MUX or analog switch 10 by single-chip microcomputer 1.Shown in Figure 1 is is the equivalent working state structure figure of transmitting terminal with ultrasonic transducer A3.
Ultrasonic emitting driving circuit 2 comprises:
Frequency dividing circuit 7 links to each other with single-chip microcomputer 1, is used for providing frequency of operation to ultrasonic transducer A3 or ultrasonic transducer B4;
Negative pressure produces circuit 8 and sine wave generating circuit 9, is used for the frequency of operation that frequency dividing circuit 7 provides is converted into the sinusoidal signal that drives ultrasonic transducer A3 or ultrasonic transducer B4 work;
MUX or analog switch 10 link to each other with single-chip microcomputer 1, are used to control the duty of ultrasonic transducer A3 and ultrasonic transducer B4.
Described frequency dividing circuit 7 can be any circuit or integrated chip with division function; It can be any circuit or integrated chip that can produce the negative voltage function that have that described negative pressure produces circuit 8; Described sine wave generating circuit 9 can be any circuit or integrated chip that can produce sine wave signal that have.
Ultrasound wave phase difference method receiving processing circuit 5 comprises:
F/V change-over circuit 12, the phase signal that phase detector circuit 11 is drawn is converted into a stable voltage, and links to each other with single-chip microcomputer 1 through ADC analog to digital conversion circuit 13;
Frequency dividing circuit 7 is used for providing and drive ultrasonic transducer A3 or ultrasonic transducer B4 to phase detector circuit 11 and launches the identical signal S2 of work;
MUX or analog switch 10 link to each other with single-chip microcomputer 1, are used to control the duty of ultrasonic transducer B4 and ultrasonic transducer A3.
Aforesaid phase detector circuit 11 can be anyly to have with functionally similar circuit of phase detector or integrated chip; Described F/V change-over circuit 12 can be that any to have to be the circuit or the integrated chip of voltage with time (frequency) conversion of signals of pulsewidth; Described ADC analog to digital conversion circuit 13 can be any circuit or integrated chip that analog signal conversion is the digital signal function that have, and also comprises the single-chip microcomputer of built-in ADC analog-digital conversion function.
Ultrasonic transducer A3 and ultrasonic transducer B4 are the sensing device with ultrasonic emitting and receiving function.
Principle of work of the present utility model:
The square wave of single-chip microcomputer 1 output certain frequency, behind frequency dividing circuit, obtain to drive the frequency band of ultrasonic transducer A3 or ultrasonic transducer B4 work, this signal produces circuit 8 through negative pressure and sine wave generating circuit 9 produces the sinusoidal signal of a driving ultrasonic transducer A3 or ultrasonic transducer B4 work, selects ultrasonic transducer A3 or ultrasonic transducer B4 emission sound wave by single-chip microcomputer 1 control MUX or analog switch 10.As shown in Figure 2.
As shown in Figure 3, Figure 4, the principle of work of ultrasound wave phase difference method receiving processing circuit 5 is: under the downbeam situation, 1 control ultrasonic transducer B4 is in the reception duty by single-chip microcomputer, ultrasonic transducer A3 is in the emission duty, and then this ultrasonic transducer B4 receives another corresponding with it ultrasonic transducer A3 emitting sound wave; Ultrasonic transducer B4 receives signal S1, and the square wave of single-chip microcomputer 1 output certain frequency obtains and drive the same signal S2 of ultrasonic transducer A3 emission work through frequency dividing circuit 7 backs simultaneously; S1, S2 signal are by obtaining the phase differential F1 of downbeam after phase detector circuit 11 comparison process; Under the countercurrent direction situation, switch ultrasonic transducer A3 again and be in the reception duty, ultrasonic transducer B4 is in the emission duty, repeats above-mentioned steps, obtains the phase differential F2 of countercurrent direction.This phase differential F1, F2 signal obtain a stable voltage by F/V change-over circuit 12, this voltage is obtained by ADC analog to digital conversion circuit 13, thereby extrapolate the time phase difference (Δ F=F1-F2) that sound travel is propagated in the concurrent-countercurrent direction, just can obtain the speed of fluid again through the calculation process of single-chip microcomputer 1.
Aforesaid downbeam is a description below with countercurrent direction: when ultrasonic emitting then is downbeam to the direction of the sound travel trend that receives and fluid motion is identical; When ultrasonic emitting to the sound travel trend that receives and the opposite countercurrent direction that is of direction of fluid motion.
Claims (4)
1. a phase-difference type ultrasonic flow metering device is characterized in that: comprise being installed in the pipeline (6) or the ultrasonic transducer A (3) and the ultrasonic transducer B (4) at pipeline (6) edge; Ultrasonic transducer A (3) links to each other with ultrasound wave phase difference method receiving processing circuit (5) with the ultrasonic emitting driving circuit of being controlled by single-chip microcomputer (1) (2) through MUX or the analog switch of being controlled by single-chip microcomputer (1) (10) with ultrasonic transducer B (4).
2. phase-difference type ultrasonic flow metering device according to claim 1 is characterized in that described ultrasonic emitting driving circuit (2) comprising:
Frequency dividing circuit (7) links to each other with single-chip microcomputer (1), is used for providing frequency of operation to ultrasonic transducer A (3) or ultrasonic transducer B (4);
Negative pressure produces circuit (8) and sine wave generating circuit (9), is used for the frequency of operation that frequency dividing circuit (7) provides is converted into the sinusoidal signal that drives ultrasonic transducer A (3) or ultrasonic transducer B (4) work;
MUX or analog switch (10) link to each other with single-chip microcomputer (1), are used to control the duty of ultrasonic transducer A (3) and ultrasonic transducer B (4).
3. phase-difference type ultrasonic flow metering device according to claim 1 is characterized in that described ultrasound wave phase difference method receiving processing circuit (5) comprising:
Phase detector circuit (11) is used to obtain phase differential F1 or F2 between signal S1 that ultrasonic transducer B (4) or ultrasonic transducer A (3) the receive signal S2 identical with driving ultrasonic transducer A (3) or ultrasonic transducer B (4) emission work;
F/V change-over circuit (12), the phase signal that phase detector circuit (11) is drawn is converted into a stable voltage, and links to each other with single-chip microcomputer (1) through ADC analog to digital conversion circuit (13);
Frequency dividing circuit (7) is used for providing and driving ultrasonic transducer A (3) or the identical signal S2 of ultrasonic transducer B (4) emission work to phase detector circuit (11);
MUX or analog switch (10) link to each other with single-chip microcomputer (1), are used to control the duty of ultrasonic transducer A (3) and ultrasonic transducer B (4).
4. phase-difference type ultrasonic flow metering device according to claim 1, it is characterized in that: described ultrasonic transducer A (3) and ultrasonic transducer B (4) are for having the sensing device of ultrasonic emitting and receiving function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205803827U CN201828295U (en) | 2010-10-28 | 2010-10-28 | Phase difference type ultrasonic wave flow metering device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205803827U CN201828295U (en) | 2010-10-28 | 2010-10-28 | Phase difference type ultrasonic wave flow metering device |
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| CN201828295U true CN201828295U (en) | 2011-05-11 |
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| CN2010205803827U Expired - Fee Related CN201828295U (en) | 2010-10-28 | 2010-10-28 | Phase difference type ultrasonic wave flow metering device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749107A (en) * | 2012-07-10 | 2012-10-24 | 广州柏诚智能科技有限公司 | High-precision time difference type single-pulse ultrasonic flowmeter system and flow measurement method thereof |
| CN102788843A (en) * | 2012-03-26 | 2012-11-21 | 湖南致力工程检测技术有限公司 | Pre-stress pipeline squeezing quality low frequency ultrasonic array detection apparatus |
| CN103557897A (en) * | 2013-11-20 | 2014-02-05 | 中环天仪股份有限公司 | Signal emitting circuit suitable for liquid ultrasonic flowmeter |
| CN104236650A (en) * | 2014-10-13 | 2014-12-24 | 山东力创科技有限公司 | Ultrasonic wave flow measurement circuit and method through phase difference method |
| CN104748805A (en) * | 2015-04-10 | 2015-07-01 | 吉安精程仪表科技有限公司 | Ultrasonic flow measurement method based on direct phase difference |
| CN105323014A (en) * | 2015-01-20 | 2016-02-10 | 北京硕人时代科技股份有限公司 | Ultrasonic communication method and ultrasonic communication device |
| CN105891326A (en) * | 2015-02-16 | 2016-08-24 | 森萨克申公司 | Method for determining properties of medium and device for determining properties of medium |
| CN107290564A (en) * | 2017-07-28 | 2017-10-24 | 电子科技大学 | A kind of ultrasonic flow-velocity measuring method based on phase difference |
| CN109084854A (en) * | 2018-09-13 | 2018-12-25 | 黄伟 | A kind of vehicle fuel charging recorder |
| CN109682432A (en) * | 2019-01-29 | 2019-04-26 | 安徽天康(集团)股份有限公司 | A kind of ultrasonic measurement steam-flow meter |
| CN110131461A (en) * | 2019-06-24 | 2019-08-16 | 郑州睿联智能科技有限公司 | A kind of novel valve controller |
| CN111337092A (en) * | 2018-12-19 | 2020-06-26 | 上海华虹计通智能系统股份有限公司 | Method for selecting reference signal, calculating method and phase difference type ultrasonic flowmeter |
-
2010
- 2010-10-28 CN CN2010205803827U patent/CN201828295U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788843A (en) * | 2012-03-26 | 2012-11-21 | 湖南致力工程检测技术有限公司 | Pre-stress pipeline squeezing quality low frequency ultrasonic array detection apparatus |
| CN102749107A (en) * | 2012-07-10 | 2012-10-24 | 广州柏诚智能科技有限公司 | High-precision time difference type single-pulse ultrasonic flowmeter system and flow measurement method thereof |
| CN102749107B (en) * | 2012-07-10 | 2015-08-05 | 广州柏诚智能科技有限公司 | High precision time difference formula monopulse ultrasonic flowmeter system and measuring flow method thereof |
| CN103557897A (en) * | 2013-11-20 | 2014-02-05 | 中环天仪股份有限公司 | Signal emitting circuit suitable for liquid ultrasonic flowmeter |
| CN103557897B (en) * | 2013-11-20 | 2016-02-24 | 中环天仪股份有限公司 | A kind of signal transmission circuit being applicable to liquid ultrasonic low |
| CN104236650A (en) * | 2014-10-13 | 2014-12-24 | 山东力创科技有限公司 | Ultrasonic wave flow measurement circuit and method through phase difference method |
| CN105323014A (en) * | 2015-01-20 | 2016-02-10 | 北京硕人时代科技股份有限公司 | Ultrasonic communication method and ultrasonic communication device |
| US10605779B2 (en) | 2015-02-16 | 2020-03-31 | Sensaction Ag | Method for determining properties of a medium and device for determining properties of a medium |
| CN105891326A (en) * | 2015-02-16 | 2016-08-24 | 森萨克申公司 | Method for determining properties of medium and device for determining properties of medium |
| CN104748805A (en) * | 2015-04-10 | 2015-07-01 | 吉安精程仪表科技有限公司 | Ultrasonic flow measurement method based on direct phase difference |
| CN107290564A (en) * | 2017-07-28 | 2017-10-24 | 电子科技大学 | A kind of ultrasonic flow-velocity measuring method based on phase difference |
| CN109084854A (en) * | 2018-09-13 | 2018-12-25 | 黄伟 | A kind of vehicle fuel charging recorder |
| CN111337092A (en) * | 2018-12-19 | 2020-06-26 | 上海华虹计通智能系统股份有限公司 | Method for selecting reference signal, calculating method and phase difference type ultrasonic flowmeter |
| CN111337092B (en) * | 2018-12-19 | 2022-02-15 | 上海华虹计通智能系统股份有限公司 | Method for selecting reference signal, calculating method and phase difference type ultrasonic flowmeter |
| CN109682432A (en) * | 2019-01-29 | 2019-04-26 | 安徽天康(集团)股份有限公司 | A kind of ultrasonic measurement steam-flow meter |
| CN110131461A (en) * | 2019-06-24 | 2019-08-16 | 郑州睿联智能科技有限公司 | A kind of novel valve controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Zhejiang Xianxin Science & Technology Co., Ltd. Assignor: Lierda Science and Technology Co., Ltd. Contract record no.: 2011330000763 Denomination of utility model: Phase difference type ultrasonic wave flow metering device Granted publication date: 20110511 License type: Exclusive License Record date: 20110620 |
|
| C56 | Change in the name or address of the patentee |
Owner name: LIERDA TECHNOLOGY GROUP CO., LTD. Free format text: FORMER NAME: LIERDA SCIENCE AND TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 310011 Gongshu District, Hangzhou Province, harmony Road, building A, room 1201, room, 18 Patentee after: Lierda Science & Technology Group Co., Ltd. Address before: Lilda science and Technology Building No. 425 Hangzhou City, Zhejiang province 310011 Dengyun Road, 14 floor Patentee before: Lierda Science and Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20161028 |
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| CF01 | Termination of patent right due to non-payment of annual fee |