CN106643951A - Novel pulse metering device in fuel gas meter end and metering method - Google Patents
Novel pulse metering device in fuel gas meter end and metering method Download PDFInfo
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- CN106643951A CN106643951A CN201611017852.7A CN201611017852A CN106643951A CN 106643951 A CN106643951 A CN 106643951A CN 201611017852 A CN201611017852 A CN 201611017852A CN 106643951 A CN106643951 A CN 106643951A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/06—Indicating or recording devices
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Abstract
The invention discloses a novel pulse metering device in a fuel gas meter end and a metering method, and relates to the technical field of fuel gas metering devices. The novel pulse metering device in the fuel gas meter end mainly comprises a photoelectric sensor, an MCU, a counting gear and a transmission gear. The photoelectric sensor comprises a photoelectric transmitting tube and a photoelectric receiving tube, the photoelectric sensor is used as a metering switch, and the MCU is used for conducting on-off control and signal processing. According to the scheme, reflecting mediums are added to the counting gear and are used as on-off mediums of the photoelectric sensor, when the photoelectric sensor identifies a white medium, the photoelectric sensor outputs a voltage to the MCU, when the photoelectric sensor identifies a black medium, the photoelectric sensor outputs another voltage to the MCU, and then the MCU achieves a metering function by distinguishing signals of different voltages. According to the novel pulse metering device in the fuel gas meter end and the metering method, the novel metering device has the advantages of being accurate in metering, strong in anti-light capability, low in power dissipation and cost, simple in process, high in production efficiency, and strong in anti-interference capability.
Description
Technical field
The present invention relates to combustible gas metering arrangement technical field, more particularly, to a kind of novel pulse metering dress at gas meter, flow meter end
Put and metering method.
Background technology
In recent years intelligent gas meter industry development is rapid, and situation is also constantly developed toward the good aspect, and table end is measured in the industry
Specifically how requirement more and more higher in terms of security, accuracy, accomplish anti-interference, reduction power consumption, reduce fault rate, improve
Reliability, the requirement for saving manufacturing cost this five aspects are even more so.
Nowadays the pulse measurement mode of intelligent gas meter includes following three mode：
1. tongue tube magnetic control metering method：Using the combination of tongue tube sensor, magnet and counting gear, metering work(is realized
Energy；
2. Hall magnetic control metering method：Combined using Hall element, magnet and counting gear, realize function of measuring；
Above two metering method, counting process carries out switch control rule using field signal, and detects the motion of counting gear
State is realizing function of measuring.
3. photo-electronic directly reading metering method：Realized using the combination of photoelectric sensor, counting gear and signal processing circuit；Meter
Number process triggers photoelectric sensor and is sampled using the aperture on counting gear, and reads the shape of current count gear
State is realizing function of measuring.
There are the following problems for above-mentioned three kinds of schemes：
1. tongue tube magnetic control metering method：Firstly, since the characteristics of tongue tube sensor has non-refractory, rapid wear, so
During production can only adopt human weld, and produce, installation process be required for consider tongue tube sensor protection ask
Topic；Second, because tongue tube sensor is by the way of magnetic control metering, so electromagnetic interference problem cannot be avoided.
2. Hall magnetic control metering method：Because Hall element is by the way of using magnetic control metering, so electromagnetic interference
Problem equally cannot be avoided.
3. photo-electronic directly reading metering method：Because photoelectric sensor sample position is located on counting gear, so high light is to light
Electric transducer easily produces interference, and because photo-electronic directly reading metering method needs, based on one group of specific counting gear, adopting
Sample rear end also needs to add corresponding detection circuit, and high cost, power consumption are big, and anti-light interference performance is poor.
The content of the invention
The goal of the invention of the present invention is to overcome gas meter, flow meter metered scheme efficiency of the prior art, anti-interference, life-span
And the problem that cost cannot get both mutually, there is provided one kind measures strong, low in energy consumption accurate, anti-light ability, low cost, technique letter
Single, production efficiency height and the novel pulse metering dress at the gas meter, flow meter end that can realize photoelectric reflection impulse sampling of strong antijamming capability
Put and metering method.
To achieve these goals, the present invention is employed the following technical solutions：
A kind of novel pulse metering device at gas meter, flow meter end, including counter assembly, driving gear component, counting gear, photoelectricity
Sensor and MCU；The driving gear component is engaged respectively with counter assembly and counting gear；The photoelectric sensor and meter
The counting face of number gear is correspondingly arranged；The MCU is electrically connected with photoelectric sensor；The counting face of the counting gear be provided with to
Few two reflections counting region.
The present invention mainly includes photoemission cell, photoelectric receiving tube, MCU, counting gear and transmission by photoelectric sensor
Gear is constituted.Used as metering switch, MCU carries out switch control rule and signal transacting to wherein photoelectric sensor.Design is counting tooth
Add that reflecting medium is black on wheel, the medium of white two kinds of colors and as the switch medium of photoelectric sensor, work as photoelectric sensing
During device identification white dielectric, sensor can export a voltage to MCU, when photoelectric sensor recognizes black medium, sensor
A voltage can be exported again to MCU, and MCU is by distinguishing the signal of different voltages to realize function of measuring.
Preferably, also including infrared transmitting tube power supply, infrared receiving tube power supply, photoemission circuit and light
Electric receiving circuit；The photoelectric sensor includes infrared transmitting tube D1 and infrared receiving tube Q1；The photoemission circuit includes
Infrared transmitting tube D1；The opto-electronic receiver circuit includes infrared receiving tube Q1；One end of the photoemission circuit with infrared
Penetrate the feeder ear Ctrl_IR interfaces electrical connection of pipe power supply, the other end ground connection of photoemission circuit；The opto-electronic receiver electricity
The one end on road electrically connects with the feeder ear Ctrl_PT interfaces of infrared receiving tube power supply, another termination of opto-electronic receiver circuit
Ground；MCU feeder ear Ctrl_IR interfaces, the confessions of infrared receiving tube power supply respectively with infrared transmitting tube power supply
The signal output part PLUSE interfaces electrical connection of electric end Ctrl_PT interfaces and infrared receiving tube Q1.
Preferably, the photoemission circuit also includes current-limiting resistance R1；The opto-electronic receiver circuit also includes pull-up
Resistance R2；One end of the current-limiting resistance R1 electrically connects with the feeder ear Ctrl_IR interfaces of infrared transmitting tube power supply, current limliting
The other end of resistance R1 is electrically connected with the positive level of infrared transmitting tube D1；The minus earth of the infrared transmitting tube D1；The pull-up
One end of resistance R2 electrically connects with the feeder ear Ctrl_PT interfaces of infrared receiving tube power supply, the other end of pull-up resistor R2
Electrically connect with the C levels of infrared receiving tube Q1 and the signal output part PLUSE interfaces of infrared receiving tube Q1 respectively；The infrared receiver
The E levels ground connection of pipe Q1.
Preferably, the counting gear is made using black, white double-colored medium or the counting face of counting gear is provided with
Black, white double-color coating, forms black, white double-colored two reflections counting region；Black, the white double color reflection counting region accounts for respectively meter
The half area in the counting face of number gear.
The position of sampling is that shutting the light on the counting gear for penetrating, and counting gear is using black, white double-colored, white face
For reflected light, black side is used to absorb light, by the difference of two states realizing function of measuring.
Preferably, being provided with light protection ring on the counting face of the counting gear.
Light protection ring is with the addition of around counting gear, so as to accomplish extremely strong electromagnetism interference and the interference of anti-high light
Ability, reliability is also relatively higher.
Preferably, the photoelectric sensor is 3 ± 0.5mm with the spacing of counting gear.
Photoelectric sensor fundamentally avoids injecting for light towards counting gear, and accomplishes that photoelectric sensor is protected with gear
The distance in 4mm or so is held, the amount of incident that ambient enters optoelectronic switch pipe is reduced, so as to reduce the transmitting of optoelectronic switch pipe
Electric current, improves the reliability of intelligent gas meter.
Preferably, the signal output part of the infrared receiving tube Q1 is provided with filter capacitor C1；The filter capacitor C1's
One end electrically connects with the signal output part PLUSE interfaces of infrared receiving tube Q1, the other end ground connection of filter capacitor C1；The filtering
Electric capacity C1 is COG electric capacity；The inside of the COG electric capacity adopts lamination monolithic structure.
Enter the filtering of horizontal pulse burr using COG electric capacity in the output end of photoelectric sensor, COG electric capacity has excellent weldering
The characteristics of connecing property and soldering resistance, it is adaptable to Reflow Soldering and wave-soldering；It is internal using lamination monolithic structure, and its capacity is highly stable
Will not change with the change of temperature, voltage and time, the characteristics of with high reliability, using as filter capacitor can
Effectively accomplish the effect of rear class filtering so that the level for sending into MCU is more steady reliable.
A kind of metering method of the novel pulse metering device suitable for gas meter, flow meter end, comprises the steps：
(8-1) program setting initialization：
The feeder ear Ctrl_IR interfaces of infrared transmitting tube D1 are set to export and being set to low；The feeder ear of infrared receiving tube Q1
Ctrl_PT interfaces are to export and be set to low；The signal output part PLUSE interfaces of infrared receiving tube Q1 are input；
(8-2) initialization context light calibrating：
The feeder ear Ctrl_PT interfaces of infrared receiving tube Q1 are set into height, the signal output part of infrared receiving tube Q1 is judged
The magnitude of voltage VP of PLUSE interfaces；
(8-3) ambient light judges：
According to the judgement of the magnitude of voltage VP of the signal output part PLUSE interfaces to infrared receiving tube Q1, if VP is less than set
Minimum permission voltage VL, then carry out light protection process；If VP is more than set minimum permission voltage VL, VP is electric for record
Pressure value；
(8-4) the magnitude of voltage VP process of the signal output part PLUSE interfaces of infrared receiving tube Q1：
The voltage VP of the signal output part PLUSE interfaces of infrared receiving tube Q1 is judged into voltage V divided by 2 as step-by-step counting；
(8-5) calibrating is counted：
The feeder ear Ctrl_IR interfaces of infrared transmitting tube D1 are set into height, the signal output part of infrared receiving tube Q1 is judged
The magnitude of voltage VP of PLUSE interfaces；
(8-6) count and judge and process：
According to the judgement of the magnitude of voltage VP of the signal output part PLUSE interfaces to infrared receiving tube Q1, if VP sentences less than counting
V is pressed in power-off, then it is assumed that now state is low；If VP judges voltage V more than counting, then it is assumed that now state is height；Most postscript
Record judged result RX1；
(8-7) MCU enters standby resting state：
The standby dormancy times of MCU position T2；
(8-8) MCU wakes up and works：
Return to step (8-1) starts again the work of execution step (8-1) to step (8-6) after MCU wake-ups, until determining
Result with RX1 conversely, then MCU is sampled.
Preferably, the light protects what is processed to comprise the following steps that：
The feeder ear Ctrl_PT interfaces of the feeder ear Ctrl_IR interfaces of infrared transmitting tube D1, infrared receiving tube Q1 are both configured to
It is low, infrared transmitting tube D1 and infrared receiving tube Q1 is closed, and close the valve of gas meter, flow meter；Until there is button triggering to be then then turned on meter
Number.
Preferably, the time of the step (8-1) to step (8-6) is T1, time of step (8-7) is T2, step
(8-1) time to step (8-8) is T, and the time meets following relation：
T2=1000T1, and T2<1/2*3600*N/Q；
Wherein, N is the digit of the corresponding character wheel for launching the circle of gear operation one；Q is gas meter, flow meter maximum stream flow unit m3/h。
Therefore, the present invention has the advantages that：
1. scheme is measured using photoelectric reflection, the program can be fully solved the problem of magnetic disturbance；By recognizing on sampling gear
Different reflection counting regions, from root reduce ambient incident angle, reduce optoelectronic switch incident current, so as to
Improve the reliability of gas meter, flow meter.
2. reliability is high, strong antijamming capability, and the example adopts light-operated metering method, and sampling location is placed on driving cog
On wheel, and light protection ring is with the addition of around counting gear, so as to accomplish extremely strong electromagnetism interference and the interference of anti-high light
Ability, reliability is also relatively higher.
3. low-power consumption, less trouble, photoelectric sensor is by the way of cycle intermittent power supply in the example, so power consumption
Can become very low；And the way of realization of the example circuit is simple, in potential failure mode analysis, element is few
Circuit of the circuit more than element, on the premise of circuit composition model is similar, fault rate is lower, and reliability is higher.
4. low manufacturing cost and manufacturing process, each device of the example belongs to surface-mounted device, can enter in process of production
Row SMT technological operations, without the need for human weld and extra safeguard measure, so manufacturing cost and manufacturing process can be done
It is relatively easy, convenient.
Description of the drawings
Fig. 1 is a kind of structural representation of the present invention；
Fig. 2 is a kind of circuit theory diagrams of the present invention；
Fig. 3 is a kind of sampling schematic diagram of the present invention.
In figure：Counter assembly 1, driving gear component 2, counting gear 3, photoelectric sensor 4, MCU 5, reflection count block
Domain 31, light protection ring 32, infrared transmitting tube D1 41, infrared receiving tube Q1 42, infrared transmitting tube power supply 61, infrared receiver
Pipe power supply 62, photoemission circuit 63, opto-electronic receiver circuit 64.
Specific embodiment
With reference to the accompanying drawings and detailed description the present invention will be further described.
Embodiment as shown in Figure 1, Figure 2, Figure 3 shows is a kind of novel pulse metering device at gas meter, flow meter end, including counter
Component 1, driving gear component 2, counting gear 3, photoelectric sensor 4 and MCU 5；The driving gear component 2 respectively with counting
Device assembly 1 and counting gear engagement 3；The photoelectric sensor 4 is correspondingly arranged with the counting face of counting gear 3；The MCU 5 with
Photoelectric sensor 4 is electrically connected；The counting face of the counting gear 3 is provided with least two reflection counting regions 31；Also include red
Emission pipe power supply 61, infrared receiving tube power supply 62, photoemission circuit 63 and opto-electronic receiver circuit 64；The light
Electric transducer 4 includes infrared transmitting tube D1 41 and infrared receiving tube Q1 42；The photoemission circuit 63 includes infrared emission
Pipe D1 41；The opto-electronic receiver circuit 64 includes infrared receiving tube Q1 42；One end of the photoemission circuit 63 with it is infrared
The feeder ear Ctrl_IR interfaces electrical connection of transmitting tube power supply 61, the other end ground connection of photoemission circuit 63；The photoelectricity
One end of receiving circuit 64 electrically connects with the feeder ear Ctrl_PT interfaces of infrared receiving tube power supply 62, opto-electronic receiver circuit
64 other end ground connection；The MCU 5 respectively with the feeder ear Ctrl_IR interfaces of infrared transmitting tube power supply 61, infrared connect
The feeder ear Ctrl_PT interfaces of closed tube power supply 62 and the signal output part PLUSE interfaces of infrared receiving tube Q1 42 are electrically connected
Connect；
The photoemission circuit 63 also includes current-limiting resistance R1；The opto-electronic receiver circuit 64 also includes pull-up resistor R2；Institute
State one end of current-limiting resistance R1 to electrically connect with the feeder ear Ctrl_IR interfaces of infrared transmitting tube power supply 61, current-limiting resistance R1
The other end electrically connect with the positive level of infrared transmitting tube D1 41；The minus earth of the infrared transmitting tube D1 41；The pull-up
One end of resistance R2 electrically connects with the feeder ear Ctrl_PT interfaces of infrared receiving tube power supply 62, and pull-up resistor R2's is another
End electrically connects respectively with the C levels of infrared receiving tube Q1 42 and the signal output part PLUSE interfaces of infrared receiving tube Q1 42；It is described
The E levels ground connection of infrared receiving tube Q1 42；
The counting gear 3 is made using black, white double-colored medium or the counting face of counting gear 3 is provided with black, white double-colored painting
Layer, forms black, white double-colored two reflections counting region 31；Black, the white double color reflection counting region 31 accounts for respectively counting gear 3
Counting face half area；
Light protection ring 32 is provided with the counting face of the counting gear 3；
The photoelectric sensor 4 is 3 ± 0.5mm with the spacing of counting gear 3；
The signal output part of the infrared receiving tube Q1 42 is provided with filter capacitor C1；One end of the filter capacitor C1 with it is infrared
The signal output part PLUSE interfaces electrical connection of reception pipe Q1 42, the other end ground connection of filter capacitor C1；The filter capacitor C1
For COG electric capacity；The inside of the COG electric capacity adopts lamination monolithic structure.
A kind of metering method of the novel pulse metering device suitable for gas meter, flow meter end, comprises the steps：
(8-1) program setting initialization：
The feeder ear Ctrl_IR interfaces of infrared transmitting tube D1 41 are set to export and being set to low；Infrared receiving tube Q1's 42
Feeder ear Ctrl_PT interfaces are to export and be set to low；The signal output part PLUSE interfaces of infrared receiving tube Q1 42 are input；
(8-2) initialization context light calibrating：
The feeder ear Ctrl_PT interfaces of infrared receiving tube Q1 42 are set into height, judge that the signal of infrared receiving tube Q1 42 is defeated
Go out to hold the magnitude of voltage VP of PLUSE interfaces；
(8-3) ambient light judges：
According to the judgement of the magnitude of voltage VP of the signal output part PLUSE interfaces to infrared receiving tube Q1 42, if VP is less than set
Fixed minimum permission voltage VL, then carry out light protection process；If VP is more than set minimum permission voltage VL, VP is recorded
Magnitude of voltage；
(8-4) the magnitude of voltage VP process of the signal output part PLUSE interfaces of infrared receiving tube Q1：
The voltage VP of the signal output part PLUSE interfaces of infrared receiving tube Q1 42 is judged into voltage V divided by 2 as step-by-step counting；
(8-5) calibrating is counted：
The feeder ear Ctrl_IR interfaces of infrared transmitting tube D1 41 are set into height, judge that the signal of infrared receiving tube Q1 42 is defeated
Go out to hold the magnitude of voltage VP of PLUSE interfaces；
(8-6) count and judge and process：
According to the judgement of the magnitude of voltage VP of the signal output part PLUSE interfaces to infrared receiving tube Q1 42, if VP is less than counting
Judge voltage V, then it is assumed that now state is low；If VP judges voltage V more than counting, then it is assumed that now state is height；Finally
Record judged result RX1；
(8-7) MCU enters standby resting state：
The standby dormancy times of MCU 5 position T2；
(8-8) MCU wakes up and works：
Return to step (8-1) starts again the work of execution step (8-1) to step (8-6) after the wake-ups of MCU 5, until judging
To result with RX1 conversely, then MCU 5 is sampled.
Preferably, the light protects what is processed to comprise the following steps that：
By the feeder ear Ctrl_IR interfaces of infrared transmitting tube D1 41, infrared receiving tube Q1 42 feeder ear Ctrl_PT interfaces all
Low, closing infrared transmitting tube D1 41 and infrared receiving tube Q1 42 is set to, and closes the valve of gas meter, flow meter；Until there is button to touch
Send out and be then then turned on counting.
Preferably, the time of the step (8-1) to step (8-6) is T1, time of step (8-7) is T2, step
(8-1) time to step (8-8) is T, and the time meets following relation：
T2=1000T1, and T2<1/2*3600*N/Q；
Wherein, N is the digit of the corresponding character wheel for launching the circle of gear operation one；Q is gas meter, flow meter maximum stream flow unit m3/h。
In the present invention, gas meter, flow meter from left to right arranges altogether eight sampling character wheels, in this eight sampling character wheels, five tables
Show integer-bit, three expression decimal places, the maximum number that eight sampling character wheels can be represented is 99999.999.In scheme, sampling
Gear is last gear, and pinion rotation one is enclosed, and just become flat 0.01m3, then N=0.013, Q is maximum stream flow, nowadays civilian
Gas meter, flow meter maximum tolerance is 6m3, then walk 0.01m3The gas minimum time be 6S, counting gear divide into half black by scheme
Half white, then my sampling period T2 is necessarily less than 3S, and in scheme the T2 times be set as 1S, so being enough to ensure that counting
Precisely.
Nowadays typically only three kind 1.6 side, 2.5 sides and 4 sides of the discharge pattern of intellectual Household diaphragm gas meter, several at this
Plant and meet following relation under different flow electricity：
According to above-mentioned data and design scheme combining, it is known that under maximum deflation flow, a cycle needs minimum needs
5S, in order to ensure that effective level twice is necessarily had in a cycle, then a cycle at least needs triggering four times；According to
Analysis of conclusion, design specific embodiment is as follows：
The reflective surface design for switching photoelectric reflection in structure design is referred to as counting gear in the one of travelling gear in table end
On, using as the counting gear of reflective surface be designed to the double-colored gear of black and white and with photoelectric reflection switch keep 3 ± 0.5mm away from
From；As reflecting surface counting gear also need to it is synchronous with the square cards for learning characters wheel of digital wheel 0.001, when 0.001 square cards for learning characters wheel rotate one circle
When just the counting gear also rotate a circle.
It includes that intermittent power supply, AD samplings and digital level compare three steps on Software for Design, intermittent power supply with
Program invocation synchronization, it is assumed that table wakes up once at interval of 1S, then as long as all calling out in single-chip microprocessor MCU in deflation or static state
Detected when awake, because a cycle needs at least to need the time of 5S, so meter need not be opened additionally again
Amount circuit power goes to operate the modular circuit.Pulsatile once sampling is carried out when each secondary program is waken up, first will
CTRL puts height, powers to circuit, and for a period of time, waiting carries out again AD samplings after level equalization for time delay, reads current PULSE ends
Magnitude of voltage, the magnitude of voltage for reading is compared with the magnitude of voltage being set, and judges current gear position；
It is converted into optical signal, light signal collection including electric signal in hardware circuit design, and optical signal is converted to electric signal, defeated
Go out to hold electric signal filtering process these steps, following operation is proceeded by after CTRL is opened：1) electric signal is converted into light letter
Number：Electric current flows through 1, No. 2 pins of photoelectric sensor D40 by resistance R1 after energization, forms loop, and now transmitting terminal is lighted；
2) light signal collection：The infrared light that the transmitting terminal of photoelectric sensor D40 is launched runs into the reflecting surface of gear, reflected light fax
The receiving terminal of sensor D40；3) optical signal is converted to electric signal：The following two kinds feelings can be run into when infrared light reflection tieback receiving end
Condition, if what is run into is black side, most of light all can reflecting surface absorbed, the remaining light for only leaving residual returns to receiving terminal,
Reception pipe is now in being not turned on or lightly conducting state, and PULSE ends export a high level；If what is run into is white face,
Most of light all can be then return to receiving terminal by reflective surface, and now reception pipe is in the conduction state, PULSE ends output one
Individual low level；4) electric signal filtering process：Because the waveform for exporting occurs certain burr or fluctuation, in PULSE outputs
End filters the burr that should not exist in the case where output time delay is not caused, it is to avoid receive plus the COG electric capacity of a 0.1nF
The result for arriving is inaccurate.
Therefore, the present invention has the advantages that：Measure strong, low in energy consumption accurate, anti-light ability, low cost, technique letter
Single, production efficiency is high and strong antijamming capability can realize photoelectric reflection impulse sampling.
It should be understood that the present embodiment is only illustrative of the invention and is not intended to limit the scope of the invention.In addition, it is to be understood that
After having read the content of instruction of the present invention, those skilled in the art can make various changes or modifications to the present invention, these etc.
Valency form equally falls within the application appended claims limited range.
Claims (10)
1. a kind of novel pulse metering device at gas meter, flow meter end, is characterized in that, including counter assembly（1）, driving gear component
（2）, counting gear（3）, photoelectric sensor（4）And MCU（5）；The driving gear component（2）Respectively with counter assembly（1）
With counting gear engagement（3）；The photoelectric sensor（4）With counting gear（3）Counting face be correspondingly arranged；The MCU（5）With
Photoelectric sensor（4）Electrical connection；The counting gear（3）Counting face be provided with least two reflection counting regions（31）.
2. a kind of novel pulse metering device at gas meter, flow meter end according to claim 1, is characterized in that, also including infrared
Penetrate pipe power supply（61）, infrared receiving tube power supply（62）, photoemission circuit（63）With opto-electronic receiver circuit（64）；Institute
State photoelectric sensor（4）Including infrared transmitting tube D1（41）With infrared receiving tube Q1（42）；The photoemission circuit（63）Bag
Include infrared transmitting tube D1（41）；The opto-electronic receiver circuit（64）Including infrared receiving tube Q1（42）；The photoemission circuit
（63）One end and infrared transmitting tube power supply（61）Feeder ear Ctrl_IR interfaces electrical connection, photoemission circuit（63）
The other end ground connection；The opto-electronic receiver circuit（64）One end and infrared receiving tube power supply（62）Feeder ear Ctrl_
PT interfaces are electrically connected, opto-electronic receiver circuit（64）The other end ground connection；The MCU（5）Respectively with infrared transmitting tube power supply
（61）Feeder ear Ctrl_IR interfaces, infrared receiving tube power supply（62）Feeder ear Ctrl_PT interfaces and infrared receiving tube
Q1（42）Signal output part PLUSE interfaces electrical connection.
3. a kind of novel pulse metering device at gas meter, flow meter end according to claim 2, is characterized in that, the photoemission
Circuit（63）Also include current-limiting resistance R1；The opto-electronic receiver circuit（64）Also include pull-up resistor R2；The current-limiting resistance R1
One end and infrared transmitting tube power supply（61）Feeder ear Ctrl_IR interfaces electrical connection, the other end of current-limiting resistance R1 with
Infrared transmitting tube D1（41）Positive level electrical connection；The infrared transmitting tube D1（41）Minus earth；The pull-up resistor R2's
One end and infrared receiving tube power supply（62）Feeder ear Ctrl_PT interfaces electrical connection, pull-up resistor R2 the other end difference
With infrared receiving tube Q1（42）C levels and infrared receiving tube Q1（42）Signal output part PLUSE interfaces electrical connection；It is described infrared
Reception pipe Q1（42）E levels ground connection.
4. a kind of novel pulse metering device at gas meter, flow meter end according to claim 1, is characterized in that, the counting gear
（3）Made or counting gear using black, white double-colored medium（3）Counting face be provided with black, white double-color coating, formed black, white
Double-colored two reflections counting region（31）；Black, the white double color reflection counting region（31）Counting gear is accounted for respectively（3）Counting
The half area in face.
5. a kind of novel pulse metering device at gas meter, flow meter end according to claim 1, is characterized in that, the counting gear
（3）Counting face on be provided with light protection ring（32）.
6. a kind of novel pulse metering device at gas meter, flow meter end according to claim 1, is characterized in that, the photoelectric sensing
Device（4）With counting gear（3）Spacing be 3 ± 0.5mm.
7. a kind of novel pulse metering device at gas meter, flow meter end according to claim 2, is characterized in that, the infrared receiver
Pipe Q1（42）Signal output part be provided with filter capacitor C1；One end of the filter capacitor C1 and infrared receiving tube Q1（42）Letter
The electrical connection of number output end PLUSE interface, the other end ground connection of filter capacitor C1；The filter capacitor C1 is COG electric capacity；It is described
The inside of COG electric capacity adopts lamination monolithic structure.
8. a kind of metering method of the novel pulse metering device at a kind of gas meter, flow meter end suitable for described in claim 2, it is special
Levying is, comprises the steps：
（8-1）Program setting is initialized：
Infrared transmitting tube D1 is set（41）Feeder ear Ctrl_IR interfaces to export and be set to low；Infrared receiving tube Q1（42）
Feeder ear Ctrl_PT interfaces to export and be set to low；Infrared receiving tube Q1（42）Signal output part PLUSE interfaces for defeated
Enter；
（8-2）Initialization context light is examined and determine：
By infrared receiving tube Q1（42）Feeder ear Ctrl_PT interfaces be set to height, judge infrared receiving tube Q1（42）Signal
The magnitude of voltage VP of output end PLUSE interface；
（8-3）Ambient light judges：
According to infrared receiving tube Q1（42）Signal output part PLUSE interfaces magnitude of voltage VP judgement, if VP be less than institute
The minimum permission voltage VL of setting, then carry out light protection process；If VP is more than set minimum permission voltage VL, record
VP magnitudes of voltage；
（8-4）The magnitude of voltage VP process of the signal output part PLUSE interfaces of infrared receiving tube Q1：
By infrared receiving tube Q1（42）The voltage VP of signal output part PLUSE interfaces judge voltage as step-by-step counting divided by 2
V；
（8-5）Count calibrating：
By infrared transmitting tube D1（41）Feeder ear Ctrl_IR interfaces be set to height, judge infrared receiving tube Q1（42）Signal
The magnitude of voltage VP of output end PLUSE interface；
（8-6）Counting judges and processes：
According to infrared receiving tube Q1（42）Signal output part PLUSE interfaces magnitude of voltage VP judgement, if VP less than meter
Number judges voltage V, then it is assumed that now state is low；If VP judges voltage V more than counting, then it is assumed that now state is height；Most
Judged result RX1 is recorded afterwards；
（8-7）MCU enters standby resting state：
MCU（5）Standby dormancy time positions T2；
（8-8）MCU wakes up and works：
MCU（5）Return to step after wake-up（8-1）Start execution step again（8-1）To step（8-6）Work, until sentencing
The result broken is with RX1 conversely, then MCU（5）Sampled.
9. a kind of metering method of the novel pulse metering device at gas meter, flow meter end according to claim 8, is characterized in that, institute
State comprising the following steps that for light protection process：
By infrared transmitting tube D1（41）Feeder ear Ctrl_IR interfaces, infrared receiving tube Q1（42）Feeder ear Ctrl_PT interfaces
It is both configured to low, closing infrared transmitting tube D1（41）With infrared receiving tube Q1（42）, and close the valve of gas meter, flow meter；Until have by
Key triggering is then then turned on counting.
10. a kind of metering method of the novel pulse metering device at gas meter, flow meter end according to claim 8, is characterized in that,
The step（8-1）To step（8-6）Time be T1, step（8-7）Time be T2, step（8-1）To step（8-8）'s
Time is T, and the time meets following relation：
T2=1000T1, and T2<1/2 *3600*N/Q；
Wherein, N is the digit of the corresponding character wheel for launching the circle of gear operation one；Q is gas meter, flow meter maximum stream flow（Unit m3/h）.
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| WO2020113368A1 (en) * | 2018-12-03 | 2020-06-11 | 金卡智能集团股份有限公司 | Sampling counting method based on light reflection |
| CN111854877A (en) * | 2020-07-24 | 2020-10-30 | 浙江威星智能仪表股份有限公司 | Optical signal sampling device and processing method of diaphragm gas meter |
| CN112284464A (en) * | 2020-10-19 | 2021-01-29 | 重庆智慧水务有限公司 | Intelligent water meter metering device and metering method |
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| CN113670397A (en) * | 2021-08-11 | 2021-11-19 | 上海飞奥燃气设备有限公司 | High-precision micro-flow monitoring wireless remote transmission diaphragm type gas meter |
| CN114441115A (en) * | 2022-04-11 | 2022-05-06 | 山东拙诚智能科技有限公司 | Method for monitoring instantaneous flow of gas |
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