CN109489750A - A kind of photoelectric water meter - Google Patents
A kind of photoelectric water meter Download PDFInfo
- Publication number
- CN109489750A CN109489750A CN201910003048.0A CN201910003048A CN109489750A CN 109489750 A CN109489750 A CN 109489750A CN 201910003048 A CN201910003048 A CN 201910003048A CN 109489750 A CN109489750 A CN 109489750A
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- CN
- China
- Prior art keywords
- laser
- water
- pressure
- receiver
- water meter
- 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.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/661—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters using light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/02—Indicating direction only, e.g. by weather vane
Abstract
The present invention provides a kind of photoelectric water meters, several laser emitters are set on the beam water baffle of one end, several receivers are set on the beam water baffle of the other end, horizontal screw wing is equipped with several loopholes, when horizontal screw wing is when the effect of water flow rotates, the laser of laser transmitter projects can be irradiated to corresponding receiver by a loophole, and the time difference of laser, water measurement amount are received according to receiver.The present invention uses laser measurement water consumption, provides measuring accuracy significantly；The present invention is used to perceive the pressure change in water flow using pressure sensor, is used to determine whether to open laser emitter and receiver, reduces power consumption；The present invention judges water (flow) direction by the reception interval of laser or reception sequence, guarantees the accuracy of metering.
Description
Technical field
The present invention relates to a kind of photoelectric water meters, belong to water meter technical field.
Background technique
With the increasingly raising of town dweller's living standard, the telecommunication involvement universal with electronic clearing technology
People's lives.But it is most of to also rely on biography as the liquid of resident living basic guarantee, the mainly metering of tap water
The mechanical metering of system and manual clearance.By the repacking to original water meter, although the conversion of electronization is completed, due to simultaneously
Original water meter structure is not broken through, and is counted by pulse accumulation merely, it is difficult to ensure that long-term metering accuracy.The following figure is given
Out be common Reed pipe type sensor design at present water meter.In Fig. 6, it can be seen that, the mechanical gear of conventional water meter is driven
Structure simultaneously has not been changed, general magnet and sensor can choose be installed at " × 1 ", " × 0.1 ", × 0.01 " etc. positions, i.e. needle
When passing through sensor, then sensor issues signal.For being mounted in the position of " × 0.1 " in Fig. 6, one group of letter of sensor " a → b "
Number then it can be concluded that water 0.1m3.The water meter of this form is exactly that essence is located against the different ratio of gear also to be measured
's.
The water meter of existing design, there are such problems:
(1) due to the limitation of acquisition position, the electronics precision of water meter can not accomplish that very accurately digit, which is only, adopts
Collect the scale of position.
(2) since water is got by the accumulation to number of signals, i.e., 1 group " a → b " is 0.1m3, then accumulation water
Amount is exactly the product of n group " a → b " signal, once error occurs in electronic section in this way, this error can not just disappear forever
It removes.
(3) due to sampling section it is magnetic original part, during normal use easily leads to metering inaccuracy by magnetic influence
Or electronics sampling section failure.
Summary of the invention
It is a kind of practical it is an object of the invention to propose, without magnetized watermeter design, accurate measurement water may be implemented
The purpose of amount.
To achieve the above object, the invention provides the following technical scheme:
A kind of photoelectric water meter is provided, several laser emitters, the beam water gear of the other end are set on the beam water baffle of one end
Several receivers are set on plate, horizontal screw wing is equipped with several loopholes, when effect rotation of the horizontal screw wing in water flow, laser
The laser of transmitter transmitting can be irradiated to corresponding receiver by a loophole, receive laser according to receiver
Time difference, water measurement amount Q.
Preferably, it is additionally provided with pressure sensor on the beam water baffle of arrival end, when the pressure of pressure sensor senses water flow
Variation is used to determine whether to open laser emitter and receiver.
Preferably, water consumption Q=Kf, K are constant, are obtained by calibration, and f is the frequency that receiver receives signal.
Preferably, distance of the loophole apart from edge is different, and each laser emitter passes through a loophole irradiation
To corresponding receiver, the flow direction of water is judged by the received time interval of different receivers.
Preferably, a loophole and a receiver are set, multiple laser emitters are circumferentially distributed along horizontal screw wing, away from
Identical with a distance from central rotating shaft, the spacing between multiple laser emitters is different, and the time of signal is received according to receiver
The variation at interval determines the flow direction of water.
Preferably, a loophole and multiple receivers, the distance phase of multiple laser emitter distance center shafts are set
Together, the color for emitting laser is different, and optical filter is arranged in receiver, and each receiver receives a kind of laser of color, according to reception
The time sequencing that device receives laser determines the flow direction of water.
Preferably, including main control module, the pressure signal that reception pressure sensor is sent open threshold value when pressure is greater than
When, control laser emitter is opened, and when pressure, which is less than, opens threshold value, control laser emitter is closed；Receiver is received to send
Signal, judge flow direction and calculate water consumption.
Preferably, main control module receives the pressure signal of pressure sensor transmission and is judged, when pressure is higher than auxiliary
A laser emitter is opened when judgment threshold to be measured；When pressure is lower than auxiliary judgment threshold value, and is higher than unlatching threshold value,
It opens all laser emitters and judges flow direction.
Preferably, main control module receives the pressure signal of pressure sensor transmission and is judged, when pressure is higher than auxiliary
A laser emitter is opened when judgment threshold to be measured；When pressure is lower than auxiliary judgment threshold value, and is higher than unlatching threshold value,
One laser emitter is measured, remaining laser emitter is opened according to the period is opened.
Preferably, main control module takes mean value after calculating separately water consumption according to the frequency that several receivers receive signal, makees
For the water consumption finally measured.
Compared with prior art, the invention has the following beneficial effects: the present invention to use laser measurement water consumption, mentions significantly
Measuring accuracy is supplied；The present invention is used to perceive the pressure change in water flow using pressure sensor, is used to determine whether to open
Laser emitter and receiver, reduce power consumption；The present invention judges water flow by the reception interval of laser or reception sequence
Direction guarantees the accuracy of metering.
Detailed description of the invention
Fig. 1 is photoelectric water meter structural schematic diagram of the present invention；
Fig. 2 is beam water plate front view of the present invention；
Fig. 3 is horizontal screw wing front view of the present invention；
Fig. 4 is laser distribution schematic diagram in the embodiment of the present invention；
Fig. 5 is photoelectric water meter circuit diagram of the present invention；
Fig. 6 is the mechanical gear schematic diagram of conventional water meter.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
In conjunction with Fig. 1, core component of the present invention is by being mounted with the beam water baffle of pressure sensor, the laser of three kinds of different colours
Transmitter and receiver are equipped with horizontal screw wing on central rotating shaft, have loophole on horizontal screw wing.
In conjunction with Fig. 2 it can be seen that having water hole on beam water plate, primarily serves and the water flow for flowing into water meter is adjusted into uniform make
With center positioning hole is mainly used for fixed center shaft, rotates horizontal screw wing well, and pressure sensor is used to perceive
Pressure change in water flow is used to determine whether to open laser emitter and receiver.
Specific implementation is, after water flow enters water meter, pressure sensor senses water flow variation on beam water plate is opened
Laser emitter.Laser emitter can issue laser, and horizontal screw wing can generate rotation under the action of water flow therewith, for example,
When the light of red laser emitter is by loophole 1 on horizontal screw wing, red laser receiver can receive signal, this
The Shi Jilu time is t1；Continue to flow with water flow, rotor continues to rotate, when red laser is again by loophole 1
When, at this time record the time be t2, and so on can obtain t1, t2 ... tn, pass through the conversion of horizontal screw wing and time difference
Calculate water velocity V, and it is generally known that, water by the flow formula of fixed caliber be Q=V × S (Q is flow, and V is flow velocity,
S is sectional area), the water flow Q by water meter can be calculated.
But water flow in the duct occurs flowing backwards phenomenon, if produced with red laser merely often because of the variation of hydraulic pressure
Raw time t if calculating, is inaccurate.
In one embodiment, in order to improve the accuracy of metering, therefore Fig. 3 is combined, it is seen in figure 3 that horizontal
Loophole in spiral shell wing is not generally evenly distributed in a position of horizontal screw wing, but the proportional horizontal screw wing that is distributed in
Different location.
The advantage of doing so is that: (1) feux rouges threw loophole 1, after feux rouges receiver receives, the available t red time
Difference, to calculate, V is red and then can to calculate Q red；And yellow excitation emitter and green laser transmitter according to can similarly wear respectively
Cross loophole 2 and loophole 3, then after having yellow laser receiver and green laser receiver respectively, it is green to t Huang and t, in turn
It similarly calculates Q Huang and Q is green, this 3 water flows should be theoretically consistent, can be using comparison when occurring inconsistent
Mode, accurate flow is determined, to enhance the accuracy of water meter measurement.
(2) another effect is, since loophole is distributed in the difference of the position in spiral shell wing, the loophole distance that Fig. 3 is provided
The distance at edge is a, 2a and 3a respectively, then theoretically when water speed is uniform,
T is red → time difference of t Huang should be t Huang → t green half, if there is exception, water meter in this time
In water flow may have occurred refluence.
Laser emitter in the present embodiment using different colours is to be sent out for the ease of distinguishing using the laser of same color
Emitter can equally judge flow direction according to the time difference, and the color of laser transmitter projects laser is not construed as to this
The limitation of invention.
In another embodiment, in conjunction with Fig. 4, the present invention can only be arranged a laser pickoff, a loophole, respectively
The distance of a laser emitter distance center axis is identical, then spiral shell wing rotates a circle, the laser of each laser transmitting passes through
Loophole is received by laser pickoff, and the angle between laser emitter 1 and laser emitter 2 is 30 °, laser emitter 2 with
Angle between laser emitter 3 is 240 °, and the angle between laser emitter 3 and laser emitter 1 is 90 °.If water flow
Forward flow, then the received sequence of laser pickoff be laser emitter 1,2,3, then be divided between signal T, 8T,
3T...；If water flow reverse flow, the received sequence of laser pickoff is laser emitter 1,3,2, then between signal
It is divided into 3T, 8T, T...；There is the rule in sigtnal interval to can determine whether the flow direction of water.
In the third embodiment, a laser pickoff, a loophole, each Laser emission can be only arranged in the present invention
The distance of device distance center axis is identical, can be used and is uniformly distributed, and laser transmitter projects laser color is different, laser pickoff
The distance of distance center axis is identical, can be used and is uniformly distributed, and each laser pickoff is respectively provided with optical filter, only receives a kind of face
The laser of color.Such as it is followed successively by red, yellow, green according to clockwise direction transmitting laser, receiver is similarly sequentially arranged,
Reception sequencing is red, yellow, green.It is red, green, yellow that sequencing is received if reversely rotating, according to
The received sequencing of receiver can equally judge water (flow) direction.
In conjunction with Fig. 5, in the present invention, MCU is master element, is responsible for acquisition time and calculates water, and the other originals of control
The functions such as part, real time clock circuit provide correct time for system.Since laser transmitting line and laser pick-off circuit are higher
Energy consumption and rapid wear original part in order to guarantee the long-time service of water meter, therefore cannot allow laser transmitter/receiver circuit longtime running.Therefore
It is installed at the sensor of beam water on piece, the pressure change being responsible in perception water, when flowing through the hydraulic pressure of beam water piece and changing, MCU
The switch that will be sent and received, system starts, when the stable water pressure of pressure sensor senses beam water piece is without change will be opened
It when change, then closes laser and sends and receives, to achieve the purpose that extend water meter service life.
It is flowed into the lower situation of water flow pressure it will be appreciated by those skilled in the art that aqueous reflux is frequently experienced in, the
In four embodiments, master element can only open a laser emitter according to the pressure value judgement that pressure sensor detects and carry out
Metering, or open all laser emitters and judge flow direction.It can be pressure given threshold, be assisted when being higher than setting
Think that water flow is forward flow when judgment threshold, is measured at this time into one laser emitter of unlatching；And when pressure is lower than auxiliary
When helping judgment threshold, and being higher than unlatching threshold value, opens all laser emitters and judge flow direction.Due to water flow in the short time
Flow direction do not change usually, therefore when pressure be lower than auxiliary judgment threshold value when can control except for metering Laser emission
Outside device, the unlatching period of other laser emitters, such as every 5s are opened once, judge flow direction.This mode further saves
About electric energy.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and its actually answering
With so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (10)
1. a kind of photoelectric water meter, it is characterised in that:
Several laser emitters are set on the beam water baffle of one end, several receivers are set on the beam water baffle of the other end, it is horizontal
Spiral shell wing is equipped with several loopholes, and when horizontal screw wing is when the effect of water flow rotates, the laser of laser transmitter projects can lead to
It crosses the loophole and is irradiated to corresponding receiver, the time difference of laser, water measurement amount Q are received according to receiver.
2. photoelectric water meter according to claim 1, it is characterised in that: be additionally provided with pressure biography on the beam water baffle of arrival end
Sensor is used to determine whether to open laser emitter and receiver when the pressure change of pressure sensor senses water flow.
3. photoelectric water meter according to claim 2, it is characterised in that: water consumption Q=Kf, K are constant, are obtained by calibration
, f is the frequency that receiver receives signal.
4. photoelectric water meter according to claim 3, it is characterised in that: distance of the loophole apart from edge is different,
Each laser emitter is irradiated to corresponding receiver by a loophole, is sentenced by the received time interval of different receivers
The flow direction cut off the water supply.
5. photoelectric water meter according to claim 3, it is characterised in that: one loophole of setting and a receiver are more
A laser emitter is circumferentially distributed along horizontal screw wing, and the distance of distance center shaft is identical, between multiple laser emitters between
Away from difference, the flow direction of water is determined according to the variation that receiver receives the time interval of signal.
6. photoelectric water meter according to claim 3, it is characterised in that: one loophole of setting and multiple receivers are more
The distance of a laser emitter distance center shaft is identical, and the color for emitting laser is different, and optical filter, Mei Gejie is arranged in receiver
The laser that device receives a kind of color is received, the flow direction of water is determined according to the time sequencing that receiver receives laser.
7. photoelectric water meter according to claim 3, it is characterised in that: including main control module, receive pressure sensor hair
The pressure signal sent, when pressure, which is greater than, opens threshold value, control laser emitter is opened, when pressure, which is less than, opens threshold value, control
Laser emitter processed is closed；The signal that receiver is sent is received, flow direction is judged and calculates water consumption.
8. photoelectric water meter according to claim 7, it is characterised in that: main control module receives the pressure that pressure sensor is sent
Force signal is simultaneously judged, a laser emitter is opened when pressure is higher than auxiliary judgment threshold value and is measured；When pressure is low
In auxiliary judgment threshold value, and be higher than open threshold value when, open all laser emitters and judge flow direction.
9. photoelectric water meter according to claim 7, it is characterised in that: main control module receives the pressure that pressure sensor is sent
Force signal is simultaneously judged, a laser emitter is opened when pressure is higher than auxiliary judgment threshold value and is measured；When pressure is low
In auxiliary judgment threshold value, and be higher than open threshold value when, a laser emitter is measured, remaining laser emitter is according to unlatching
Period opens.
10. photoelectric water meter according to claim 7, it is characterised in that: main control module is received according to several receivers to be believed
Number frequency calculate separately water consumption after take mean value, as the water consumption finally measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910003048.0A CN109489750A (en) | 2019-01-02 | 2019-01-02 | A kind of photoelectric water meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910003048.0A CN109489750A (en) | 2019-01-02 | 2019-01-02 | A kind of photoelectric water meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109489750A true CN109489750A (en) | 2019-03-19 |
Family
ID=65713778
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910003048.0A Pending CN109489750A (en) | 2019-01-02 | 2019-01-02 | A kind of photoelectric water meter |
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| Country | Link |
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| CN (1) | CN109489750A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729437A (en) * | 2020-12-22 | 2021-04-30 | 连云港腾越电子科技有限公司 | Fault self-detection water meter |
| CN114113776A (en) * | 2021-11-04 | 2022-03-01 | 合肥中能电力科技有限公司 | High-precision data acquisition and data processing device supporting electric power spot transaction |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08201129A (en) * | 1995-01-26 | 1996-08-09 | Zexel Corp | Flowmeter |
| US20140114238A1 (en) * | 2011-10-27 | 2014-04-24 | Zyno Medical Llc | Syringe pump with improved flow monitoring |
| CN205262554U (en) * | 2015-11-21 | 2016-05-25 | 河北海通仪表股份有限公司 | A laser sampling device that is used for water gauge flow error to examine and determine |
| CN205785374U (en) * | 2016-06-13 | 2016-12-07 | 江苏赛达电子科技有限公司 | A kind of ultrasonic flow sensor |
| CN206787627U (en) * | 2017-05-09 | 2017-12-22 | 中国石油大学(华东) | A kind of laser type gas turbine meter |
| CN209485454U (en) * | 2019-01-02 | 2019-10-11 | 西安金指针电子技术有限公司 | A kind of photoelectric water meter |
-
2019
- 2019-01-02 CN CN201910003048.0A patent/CN109489750A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08201129A (en) * | 1995-01-26 | 1996-08-09 | Zexel Corp | Flowmeter |
| US20140114238A1 (en) * | 2011-10-27 | 2014-04-24 | Zyno Medical Llc | Syringe pump with improved flow monitoring |
| CN205262554U (en) * | 2015-11-21 | 2016-05-25 | 河北海通仪表股份有限公司 | A laser sampling device that is used for water gauge flow error to examine and determine |
| CN205785374U (en) * | 2016-06-13 | 2016-12-07 | 江苏赛达电子科技有限公司 | A kind of ultrasonic flow sensor |
| CN206787627U (en) * | 2017-05-09 | 2017-12-22 | 中国石油大学(华东) | A kind of laser type gas turbine meter |
| CN209485454U (en) * | 2019-01-02 | 2019-10-11 | 西安金指针电子技术有限公司 | A kind of photoelectric water meter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729437A (en) * | 2020-12-22 | 2021-04-30 | 连云港腾越电子科技有限公司 | Fault self-detection water meter |
| CN114113776A (en) * | 2021-11-04 | 2022-03-01 | 合肥中能电力科技有限公司 | High-precision data acquisition and data processing device supporting electric power spot transaction |
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