CN206235373U - A kind of novel pulse metering device at gas meter, flow meter end - Google Patents
A kind of novel pulse metering device at gas meter, flow meter end Download PDFInfo
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- CN206235373U CN206235373U CN201621226750.1U CN201621226750U CN206235373U CN 206235373 U CN206235373 U CN 206235373U CN 201621226750 U CN201621226750 U CN 201621226750U CN 206235373 U CN206235373 U CN 206235373U
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Abstract
The utility model discloses a kind of novel pulse metering device at gas meter, flow meter end, it is related to combustible gas metering arrangement technical field.The utility model includes counter, driving gear set, counting gear, photoelectric sensor and MCU；The driving gear set is engaged with counter and counting gear respectively；The photoelectric sensor includes infrared transmitting tube D1 and infrared receiving tube Q1；The MCU is electrically connected with infrared transmitting tube D1 and infrared receiving tube Q1 respectively；The photoelectric sensor is correspondingly arranged with the counting face of counting gear；The counting face of the counting gear is provided with two reflection counting regions.Used as metering switch, MCU carries out switching control and signal transacting photoelectric sensor, and MCU realizes function of measuring by distinguishing the signal of different voltages.The utility model has the characteristics of measuring strong, low in energy consumption accurate, anti-light ability, low cost, process is simple, production efficiency high and strong antijamming capability.
Description
Technical field
The utility model is related to combustible gas metering arrangement technical field, more particularly, to a kind of novel pulse meter at gas meter, flow meter end
Amount device.
Background technology
Intelligent gas meter industry development is rapid in recent years, 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 is realized
Function；
2. Hall magnetic control metering method：Combined using Hall sensor, magnet and counting gear, realize function of measuring；
Above two metering method, counting process carries out switch control using magnetic field signal, and detects counting gear
Motion state realizes function of measuring.
3. photo-electronic directly reading metering method：Combined using photoelectric sensor, counting gear and signal processing circuit and realized；Meter
Number process triggers photoelectric sensor and is sampled using the aperture on counting gear, and reads the shape of current count gear
State realizes 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 there is non-refractory, rapid wear in tongue tube sensor, institute
With during production can only use human weld, and produce, installation process be required for consider tongue tube sensor guarantor
Shield problem；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 sensor is by the way of using magnetic control metering, so electromagnetic interference
Problem cannot equally 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
Goal of the invention of the present utility model be in order to overcome gas meter, flow meter metered scheme efficiency of the prior art, it is anti-interference,
The problem that life-span and cost cannot get both mutually, there is provided one kind measures strong, low in energy consumption accurate, anti-light ability, low cost, work
Skill is simple, production efficiency is high and the novel pulse meter at the strong antijamming capability gas meter, flow meter end that can realize photoelectric reflection impulse sampling
Amount device.
To achieve these goals, the utility model uses following technical scheme：
A kind of novel pulse metering device at gas meter, flow meter end, including counter, driving gear set, counting gear, photoelectric transfer
Sensor and MCU；The driving gear set is engaged with counter and counting gear respectively；The photoelectric sensor includes infrared emission
Pipe D1 and infrared receiving tube Q1；The MCU is electrically connected with infrared transmitting tube D1 and infrared receiving tube Q1 respectively；The photoelectric sensing
Device is correspondingly arranged with the counting face of counting gear；The counting face of the counting gear is provided with two reflection counting regions.
The utility model it is main by photoelectric sensor include photoemission cell, photoelectric receiving tube, MCU, counting gear and
Travelling gear is constituted.Used as metering switch, MCU carries out switching control and signal transacting wherein photoelectric sensor.Design is in meter
Add that reflecting medium is black on number gears, the medium of white two kinds of colors and as the switch medium of photoelectric sensor, work as photoelectricity
During sensor identification white dielectric, sensor can export a voltage to MCU, when photoelectric sensor recognizes black medium, pass
Sensor can export a voltage to MCU again, and MCU realizes function of measuring by distinguishing the signal of different voltages.
Therefore, the utility model measures scheme using photoelectric reflection, the characteristics of with the problem that can be fully solved magnetic disturbance.
Preferably, also including infrared transmitting tube power supply, infrared receiving tube power supply, photoemission circuit and light
Electric receiving circuit；The opto-electronic receiver circuit includes infrared receiving tube Q1；One end of the photoemission circuit and infrared emission
The feeder ear Ctrl_IR interfaces electrical connection of pipe power supply, the other end ground connection of photoemission circuit；The opto-electronic receiver circuit
One end electrically connected with the feeder ear Ctrl_PT interfaces of infrared receiving tube power supply, the other end of opto-electronic receiver circuit ground connection；
MCU feeder ear Ctrl_IR interfaces, the feeder ears of infrared receiving tube power supply respectively with infrared transmitting tube power supply
The signal output part PLUSE interfaces electrical connection of Ctrl_PT interfaces and infrared receiving tube Q1.
Preferably, the photoemission circuit also includes resistance R1；The opto-electronic receiver circuit also includes resistance R2；Institute
One end of resistance R1 is stated to be electrically connected with the feeder ear Ctrl_IR interfaces of infrared transmitting tube power supply, the other end of resistance R1 with
The positive level electrical connection of infrared transmitting tube D1；The negative pole ground connection of the infrared transmitting tube D1；One end of the resistance R2 connects with infrared
The feeder ear Ctrl_PT interfaces electrical connection of closed tube power supply, the other end of resistance R2 respectively with C grades of infrared receiving tube Q1 and
The signal output part PLUSE interfaces electrical connection of infrared receiving tube Q1；The E grades of ground connection of the infrared receiving tube Q1.
Preferably, the counting gear is made of 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 meter respectively
The area ratio in the counting face of number gear is 2:1.
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 two differences of state realizing function of measuring.Black area is white face
Long-pending 2 times, MCU extracting waste reflected light Count of Status.
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 3.5 ± 0.2mm with the spacing of counting gear.
Photoelectric sensor fundamentally avoids injecting for light, and accomplish that photoelectric sensor is protected with gear towards counting gear
The distance in 4mm or so is held, the amount of incident for making ambient enter 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 circuit；One end of the filter circuit
Electrically connected with the signal output part PLUSE interfaces of infrared receiving tube Q1, the other end ground connection of filter circuit.
Preferably, described filter circuit is filter capacitor C1.
Preferably, the filter capacitor C1 is COG electric capacity, the inside of the COG electric capacity uses 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, being used as filter capacitor can
The effective effect for accomplishing rear class filtering so that the level of feeding MCU is more steady reliable.
Therefore, the utility model has the advantages that：
1. scheme is measured using photoelectric reflection, the program can be fully solved the problem of magnetic disturbance；By on sampling gear
Different reflection counting regions are recognized, the incident angle of ambient are reduced from root, reducing the incident current of optoelectronic switch,
So as to improve the reliability of gas meter, flow meter.
2. reliability is high, strong antijamming capability, and the example uses 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, from 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 stronger.
4. low manufacturing cost and manufacturing process, each device of example belong to surface-mounted device, can enter in process of production
Row SMT technological operations, without human weld and extra safeguard measure, so manufacturing cost and manufacturing process can be done
It is relatively easy, convenient.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model；
Fig. 2 is a kind of circuit theory diagrams of the present utility model；
Fig. 3 is a kind of sampling schematic diagram of the present utility model.
In figure：Counter 1, driving gear set 2, counting gear 3, photoelectric sensor 4, MCU 5, reflection counting region 31,
Light protection ring 32, infrared transmitting tube D1 41, infrared receiving tube Q1 42, infrared transmitting tube power supply 61, infrared receiving tube are supplied
Power supply 62, photoemission circuit 63, opto-electronic receiver circuit 64.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and detailed description.
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
1st, driving gear set 2, counting gear 3, photoelectric sensor 4 and MCU 5；The driving gear set 2 respectively with counter 1 and count
Gear engagement 3；The photoelectric sensor 4 includes infrared transmitting tube D1 41 and infrared receiving tube Q1 42；The MCU 5 respectively with
Infrared transmitting tube D1 41 and infrared receiving tube Q1 42 are electrically connected；The photoelectric sensor 4 is corresponding with the counting face of counting gear 3
Set；The counting face of the counting gear 3 is provided with two reflection counting regions 31；
Also include infrared transmitting tube power supply 61, infrared receiving tube power supply 62, photoemission circuit 63 and photoelectricity
Receiving circuit 64；The opto-electronic receiver circuit 64 includes infrared receiving tube Q1 42；One end of the photoemission circuit 63 with it is red
The feeder ear Ctrl_IR interfaces electrical connection of emission pipe power supply 61, the other end ground connection of photoemission circuit 63；The light
One end of electric receiving circuit 64 electrically connects with the feeder ear Ctrl_PT interfaces of infrared receiving tube power supply 62, opto-electronic receiver electricity
The other end ground connection on road 64；It is the feeder ear Ctrl_IR interfaces respectively with infrared transmitting tube power supply 61 of the MCU 5, infrared
The feeder ear Ctrl_PT interfaces of reception pipe 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 resistance R1；The opto-electronic receiver circuit 64 also includes resistance R2；The electricity
Hinder R1 one end electrically connected with the feeder ear Ctrl_IR interfaces of infrared transmitting tube power supply 61, the other end of resistance R1 with it is red
The positive level electrical connection of emission pipe D1 41；The negative pole ground connection of the infrared transmitting tube D1 41；One end of the resistance R2 with it is red
The feeder ear Ctrl_PT interfaces electrical connection of outer reception pipe power supply 62, the other end of resistance R2 respectively with infrared receiving tube Q1
The signal output part PLUSE interfaces electrical connection of C grades and infrared receiving tube Q1 42 of 42；E grades of the infrared receiving tube Q1 42
Ground connection；
The counting gear 3 is made of black, white double-colored medium or the counting face of counting gear 3 is provided with black, Bai Shuan
Color coating, forms black, white double-colored two reflections counting region 31；Black, the white double color reflection counting region 31 accounts for counting respectively
The area ratio in the counting face of gear 3 is 2:1；
Light protection ring 32 is provided with the counting face of the counting gear 3；
The photoelectric sensor 4 is 3.5mm with the spacing of counting gear 3；
The signal output part of the infrared receiving tube Q1 42 is provided with filter circuit；One end of the filter circuit with it is infrared
The signal output part PLUSE interfaces electrical connection of reception pipe Q1 42, the other end ground connection of filter circuit；
Described filter circuit is filter capacitor C1；
The filter capacitor C1 is COG electric capacity, and the inside of the COG electric capacity uses lamination monolithic structure.
In the utility model, gas meter, flow meter from left to right sets altogether eight sampling character wheels, in this eight sampling character wheels, five
Individual expression integer-bit, three expression decimal places, the eight sampling maximum numbers that can represent of character wheel are 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, and Q is maximum stream flow, nowadays
Domestic gas table maximum tolerance is 6m3, then walk the gas minimum time of 0.01m3 for 6S, scheme divide into counting gear black
Color, two kinds of colors of white are counted, and black area is 2 times of white area, MCU extracting waste reflected light Count of Status.
The reflective surface design for switching photoelectric reflection in structure design is referred to as counting in the one of travelling gear in table end
On gear, 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 3.5mm away from
From；Also needed to as the counting gear of reflecting surface 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 being called 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 4S, 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, is powered to circuit, and time delay for a period of time, AD samplings is carried out after waiting level equalization again, reads current PULSE ends
Magnitude of voltage, the magnitude of voltage that will be read is compared with the magnitude of voltage being set, and judges current gear position；
It is converted into optical signal including electric signal in hardware circuit design, and light signal collection, optical signal is converted to telecommunications
Number, output end electric signal filtering process these steps, when proceeding by following operation after CTRL openings：1）Electric signal is converted into
Optical signal：Electric current flows through 1, No. 2 pins of photoelectric sensor D40 by resistance R1 after energization, forms loop, now launches end points
It is bright；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
The receiving terminal of electric transducer D40； 3）Optical signal is converted to electric signal：Following two can be run into when infrared light reflection tieback receiving end
Kind of situation, 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 reception
End, 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,
Then most of light all can be then return to receiving terminal by reflective surface, and now reception pipe is in the conduction state, the output of PULSE ends
One low level, the low level that MCU only takes the output of PULSE ends is counted；4）Electric signal filtering process：Because the waveform for exporting can go out
Now certain burr or fluctuation, in PULSE output ends plus a COG electric capacity of 0.1nF, are not causing the feelings of output time delay
The burr that should not exist is filtered under condition, it is to avoid the result for receiving is inaccurate.
Therefore, the utility model has the advantages that：Measure strong, low in energy consumption accurate, anti-light ability, low cost, work
Skill is simple, production efficiency is high and strong antijamming capability can realize photoelectric reflection impulse sampling.
It should be understood that the present embodiment is merely to illustrate the utility model rather than limits scope of the present utility model.In addition
It should be understood that after the content for having read the utility model instruction, those skilled in the art can make various to the utility model
Change or change, these equivalent form of values equally fall within the application appended claims limited range.
Claims (9)
1. a kind of novel pulse metering device at gas meter, flow meter end, it is characterized in that, including counter（1）, driving gear set（2）, meter
Number gear（3）, photoelectric sensor（4）And MCU（5）；The driving gear set（2）Respectively with counter（1）Nibbled with counting gear
Close（3）；The photoelectric sensor（4）Including infrared transmitting tube D1（41）With infrared receiving tube Q1（42）；The MCU（5）Respectively
With infrared transmitting tube D1（41）With infrared receiving tube Q1（42）Electrical connection；The photoelectric sensor（4）With counting gear（3）Meter
Number face is correspondingly arranged；The counting gear（3）Counting face be provided with two reflection counting regions（31）.
2. the novel pulse metering device at a kind of gas meter, flow meter end according to claim 1, it is characterized in that, also including infrared hair
Penetrate pipe power supply（61）, infrared receiving tube power supply（62）, photoemission circuit（63）With opto-electronic receiver circuit（64）；Institute
State 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 photoelectricity connects
Receive circuit（64）One end and infrared receiving tube power supply（62）Feeder ear Ctrl_PT interfaces electrical connection, opto-electronic receiver electricity
Road（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
Interface is electrically connected.
3. the novel pulse metering device at a kind of gas meter, flow meter end according to claim 2, it is characterized in that, the photoemission
Circuit（63）Also include resistance R1；The opto-electronic receiver circuit（64）Also include resistance R2；One end of the resistance R1 with it is infrared
Transmitting tube power supply（61）The electrical connection of feeder ear Ctrl_IR interfaces, the other end of resistance R1 and infrared transmitting tube D1（41）
Positive level electrical connection；The infrared transmitting tube D1（41）Negative pole ground connection；One end of the resistance R2 powers with infrared receiving tube
Power supply（62）The electrical connection of feeder ear Ctrl_PT interfaces, the other end of resistance R2 respectively with infrared receiving tube Q1（42）C grades and
Infrared receiving tube Q1（42）Signal output part PLUSE interfaces electrical connection；The infrared receiving tube Q1（42）E grades ground connection.
4. the novel pulse metering device at a kind of gas meter, flow meter end according to claim 1, it is characterized in that, the counting gear
（3）It is 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 area ratio in face is 2:1.
5. the novel pulse metering device at a kind of gas meter, flow meter end according to claim 1, it is characterized in that, the counting gear
（3）Counting face on be provided with light protection ring（32）.
6. the novel pulse metering device at a kind of gas meter, flow meter end according to claim 1, it is characterized in that, the photoelectric sensing
Device（4）With counting gear（3）Spacing be 3.5 ± 0.2mm.
7. the novel pulse metering device at a kind of gas meter, flow meter end according to claim 2, it is characterized in that, the infrared receiver
Pipe Q1（42）Signal output part be provided with filter circuit；One end of the filter circuit and infrared receiving tube Q1（42）Signal it is defeated
Go out to hold PLUSE interfaces to electrically connect, the other end ground connection of filter circuit.
8. the novel pulse metering device at a kind of gas meter, flow meter end according to claim 7, it is characterized in that, described filtered electrical
Road is filter capacitor C1.
9. the novel pulse metering device at a kind of gas meter, flow meter end according to claim 8, it is characterized in that, the filter capacitor
C1 is COG electric capacity, and the inside of the COG electric capacity uses lamination monolithic structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621226750.1U CN206235373U (en) | 2016-11-15 | 2016-11-15 | A kind of novel pulse metering device at gas meter, flow meter end |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621226750.1U CN206235373U (en) | 2016-11-15 | 2016-11-15 | A kind of novel pulse metering device at gas meter, flow meter end |
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| CN206235373U true CN206235373U (en) | 2017-06-09 |
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| CN201621226750.1U Active CN206235373U (en) | 2016-11-15 | 2016-11-15 | A kind of novel pulse metering device at gas meter, flow meter end |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643951A (en) * | 2016-11-15 | 2017-05-10 | 金卡高科技股份有限公司 | Novel pulse metering device in fuel gas meter end and metering method |
| CN107860433A (en) * | 2017-12-26 | 2018-03-30 | 重庆前卫克罗姆表业有限责任公司 | The pulse metering device at gas meter, flow meter end |
| CN108254036A (en) * | 2018-05-04 | 2018-07-06 | 湖南汉德史特仪表有限公司 | Two photoelectric tube flow sensor for countering and its operation method |
| CN110017935A (en) * | 2019-04-18 | 2019-07-16 | 广东万和热能科技有限公司 | A kind of wind pressure sensor |
| 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 |
| CN112229472A (en) * | 2020-09-04 | 2021-01-15 | 金卡智能集团股份有限公司 | Sampling counting assembly of metering device and metering device with sampling counting assembly |
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2016
- 2016-11-15 CN CN201621226750.1U patent/CN206235373U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643951A (en) * | 2016-11-15 | 2017-05-10 | 金卡高科技股份有限公司 | Novel pulse metering device in fuel gas meter end and metering method |
| CN107860433A (en) * | 2017-12-26 | 2018-03-30 | 重庆前卫克罗姆表业有限责任公司 | The pulse metering device at gas meter, flow meter end |
| CN108254036A (en) * | 2018-05-04 | 2018-07-06 | 湖南汉德史特仪表有限公司 | Two photoelectric tube flow sensor for countering and its operation method |
| 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 |
| CN113167627A (en) * | 2018-12-03 | 2021-07-23 | 金卡智能集团股份有限公司 | Sampling counting method based on light reflection |
| CN113167627B (en) * | 2018-12-03 | 2022-09-27 | 金卡智能集团股份有限公司 | Sampling counting method based on light reflection |
| CN110017935A (en) * | 2019-04-18 | 2019-07-16 | 广东万和热能科技有限公司 | A kind of wind pressure sensor |
| CN112229472A (en) * | 2020-09-04 | 2021-01-15 | 金卡智能集团股份有限公司 | Sampling counting assembly of metering device and metering device with sampling counting assembly |
| CN112229472B (en) * | 2020-09-04 | 2024-07-02 | 金卡智能集团股份有限公司 | Sampling counting assembly of metering instrument and metering instrument with sampling counting assembly |
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