CN109341737B - Brush sampling counting structure of intelligent metering instrument - Google Patents
Brush sampling counting structure of intelligent metering instrument Download PDFInfo
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- CN109341737B CN109341737B CN201811392598.8A CN201811392598A CN109341737B CN 109341737 B CN109341737 B CN 109341737B CN 201811392598 A CN201811392598 A CN 201811392598A CN 109341737 B CN109341737 B CN 109341737B
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- 238000005070 sampling Methods 0.000 title claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 90
- 239000004020 conductor Substances 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 239000010959 steel Substances 0.000 claims description 26
- 230000007704 transition Effects 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 235000014676 Phragmites communis Nutrition 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The invention relates to the technical field of counting of metering instruments, in particular to an intelligent metering instrument electric brush sampling counting structure, which comprises a counter and a control board, wherein the counter comprises a counter frame, a word wheel set and a signal output gear, wherein the word wheel set and the signal output gear are arranged on the counter frame, the control board is provided with a main control unit, the signal output gear comprises a gear part and a rotating wheel part, the rotating wheel part comprises a plastic wheel and a conductive wheel, a metal conductor is abutted to the rotating wheel part, and the metal conductor is electrically connected with the main control unit on the control board through a wire. The technical advantages of the scheme are that the counting result is not interfered by the outside, and the counting is accurate.
Description
Technical Field
The invention relates to the technical field of metering instrument counting, in particular to an intelligent metering instrument brush sampling counting structure.
Background
In the field of metering devices, sampling counting is an important process for acquiring metering data. In recent years, along with the rapid and rapid technology of the intelligent instrument industry, the aspects of safety and accuracy of metering data of the metering instrument are rapidly developed, the metering data are acquired and counted in a pulse counting mode in the existing product, and the existing pulse metering mode mainly comprises a reed switch magnetic control metering mode, a Hall magnetic control metering mode and an optical sampling metering mode. The existing reed switch magnetic control metering mode has the characteristics of poor high temperature resistance, easy damage and the like of the reed switch sensor, only manual welding can be adopted in the production process, the cost is high, and meanwhile, the magnetic interference problem cannot be avoided. The Hall sensor adopts a magnetic control metering mode, so that the problem of poor anti-magnetic interference capability is solved; the photoelectric sampling metering mode has the problems that the distance between the photoelectric sensor and the reflecting surface is required to be very high, the assembly error of each part is large, the distance between the photoelectric sensor and the reflecting surface is unstable in mass production, and signal acquisition is easy to be abnormal.
Aiming at the application defects of the existing pulse sampling counting at present, the existing pulse counting mode has further improvement and lifting space.
Disclosure of Invention
The invention aims to solve the defects of the prior art to a certain extent, and provides an intelligent metering device brush sampling and counting structure which has the technical advantages that the counting result is not interfered by the outside and the counting is accurate.
The invention provides an intelligent metering device brush sampling counting structure, which comprises a counter and a control board, wherein the counter comprises a counter frame, a character wheel set and a signal output gear, wherein the character wheel set and the signal output gear are arranged on the counter frame, a main control unit is arranged on the control board, the signal output gear comprises a gear part and a rotating wheel part, the rotating wheel part comprises a plastic wheel and a conductive wheel, a metal conductor is abutted to the rotating wheel part, and the metal conductor is electrically connected with the main control unit on the control board through a wire.
Further, the metal conductor comprises a metal spring, one end of the metal spring is provided with a metal ball, the metal ball is abutted to the rotating wheel part, and the other end of the metal spring is electrically connected with the main control unit through a wire.
Further scheme, the extension has mounting platform on the counter frame, be equipped with the support on the mounting platform, signal output gear passes through the support and sets up on the counter frame, the support includes via hole portion, and the metal screw passes in proper order behind wire terminal and the via hole portion that are located the wire and connects with metal spring one end low.
In a further scheme, the metal ball is a steel ball, and when the metal spring works, the metal spring is in a compressed state and has a acting force acting on the steel ball so that the steel ball is propped against the rotating wheel part.
Further, the metal conductor comprises a metal spring piece connected with the wire, and the metal spring piece is riveted with the wire through a riveting terminal.
Further, the counter frame is extended with a mounting platform, the signal output gear is arranged on the mounting platform, a Z-shaped limit groove is formed in the mounting platform, and the metal elastic sheet is limited in the Z-shaped limit groove.
In a further scheme, the metal elastic sheet is a stainless steel sheet, and the thickness of the metal elastic sheet is 0.03-0.1 mm.
Further, the conductive wheel is cylindrical, the plastic wheel is semi-cylindrical and barrel-shaped, the plastic wheel is enveloped on the outer surface of the conductive wheel, and a step is formed at the transition part between the side surface of the conductive wheel and the side surface of the plastic wheel.
Further, the conductive wheel and the plastic wheel are integrally injection molded into a whole.
Further, the counter is also provided with a signal input gear, the character wheel group comprises a first character wheel, the signal input gear is meshed with the first character wheel, and the first character wheel is meshed with the gear part; or the counter is also provided with a signal input gear, the character wheel group comprises a first character wheel, the signal input gear is coaxially connected with a signal output gear, the signal output gear is meshed with the first character wheel, and the signal input gear drives the first character wheel and the signal output gear to rotate at the same time; or the signal input gear is meshed with the first character wheel, the signal input gear drives the signal output gear to rotate, and the signal output gear drives the first character wheel to rotate.
After the technical scheme is adopted, the invention has the following advantages:
1. the utility model provides an intelligent metering device brush sampling count structure, includes counter and control panel, the counter includes counter frame and sets up word wheelset and signal output gear on the counter frame, be equipped with the master control unit on the control panel, signal output gear includes gear portion and runner portion, runner portion includes plastic wheel and electrically conductive wheel, the butt has metal conductor in the runner portion, metal conductor passes through the wire and is connected with the master control unit electricity on the control panel. The signal output gear rotates under the drive of the internal element of the base meter and the signal input gear, the metal conductor is conductive when contacting with the conductive wheel part, and is powered off when contacting with the plastic wheel part, when the output gear rotates for 360 degrees, a counting pulse is generated, and the counting pulse is transmitted to the control unit of the control board, so that pulse counting can be realized, and further the metering result, the gas consumption, the water consumption and the like are obtained. This scheme structural design can more accurately sample, and does not have the problem such as interference, magnetic interference. The device has the technical advantages of no interference from external signals, accurate metering, few structural parts and convenient assembly. If the metering precision is required to be further improved, the signal output gear can be designed to generate 2, 3 or more pulses when rotating 360 degrees, and only a step structure is required to be formed by respectively making a step structure on the transition edges of the conductive wheel and the plastic gear at every 90 degrees and 60 degrees.
2. The metal conductor comprises a metal spring, one end of the metal spring is provided with a metal ball, the metal ball is abutted against the rotating wheel part, and the other end of the metal spring is electrically connected with the main control unit through a wire. The counter frame is provided with a mounting platform in an extending mode, the mounting platform is provided with a support, the signal output gear is arranged on the counter frame through the support, the support comprises a through hole part, and the metal screw rod sequentially penetrates through the wire terminal and the through hole part on the wire and then is connected with one end of the metal spring in a low mode. The through hole part is at a certain distance from the output gear, and the distance between the through hole part and the signal output gear is required to ensure that the steel balls can fully contact with the rotating wheel part of the signal output gear and ensure proper friction force. If the contact is impossible, the signal transmission will be in the middle section, and if the friction force is too large, the signal output gear will not rotate smoothly. The present invention sets the distance between them to 0.3mm. The steel ball, the metal spring and the conductive wheel are all made of stainless steel 304, and are corrosion-resistant. And the surfaces of the conductive wheel and the steel balls are smooth, and the friction force generated when the conductive wheel and the steel balls relatively rotate is small, so that the output gear can conveniently and normally operate.
3. The conducting wheel and the plastic wheel are integrated through injection molding, the injection molding integration can ensure the assembly gap between the conducting ring and the plastic gear, and finally the output gear is fixed by the fixing cap and then is thermally connected, so that the output gear is ensured not to fall off.
4. The other preferable scheme of the invention adopts a mode that the metal elastic sheet is in contact with the output gear for conducting electricity. The advantages are less structural parts and convenient assembly.
5. The conductive wheel is cylindrical, the plastic wheel is semi-cylindrical and barrel-shaped, the plastic wheel is enveloped on the outer surface of the conductive wheel, and a step is formed at the transition part between the side surface of the conductive wheel and the side surface of the plastic wheel. The transition edge of each 180 degrees of the conductive wheel and the plastic gear is made into a step difference step, so that the signal sent by the steel ball or the metal spring plate at the transition edge can be prevented from being delayed or the steel ball or the metal spring plate is blocked due to the matching reason. The steel ball or the metal spring plate can instantly drop when passing through the difference structure, the obtained signal is clear, and the metering signal is more accurate.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of a counter part of the present invention;
FIG. 2 is a schematic diagram of a portion of a signal output gear according to the present invention;
FIG. 3 is a schematic view of a partial structure of an embodiment of the present invention;
FIG. 4 is a schematic diagram of a partial structure of a second embodiment of the present invention;
FIG. 5 is a schematic diagram of a two-metal spring structure according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a portion of a three-signal input gear and a signal output gear according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a third counter according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a four-counter structure according to an embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
In addition to the above preferred embodiments, the present invention has other embodiments, and various changes and modifications may be made by those skilled in the art without departing from the spirit of the invention, which is defined in the appended claims.
The invention provides an intelligent metering instrument brush sampling counting structure, wherein the intelligent metering instrument can be a water meter, a gas meter, a heat meter and an electric meter, the gas meter can be a film meter or an electronic meter (such as an ultrasonic meter and a thermal meter), and the metering instrument can be an industrial flowmeter or a household gas meter.
The measuring instrument of the embodiment is described in detail by taking a household electronic gas meter as an example.
As shown in fig. 1 and 2, the present invention proposes an intelligent metering device brush sampling counting structure, which can be applied to metering devices such as gas meters, water meters, heat meters, etc., and the technical structure comprises a counter 1 and a control board 2, wherein the counter 1 comprises a counter frame 11, a word wheel set 12 arranged on the counter frame 11, and a signal output gear 13, the control board 2 is provided with a main control unit 20, the signal output gear 13 comprises a gear portion 131 and a rotating wheel portion, the rotating wheel portion comprises a plastic wheel 1321 and a conductive wheel 1322, the rotating wheel portion is abutted with a metal conductor, and the metal conductor is electrically connected with the main control unit 20 on the control board 2 through a wire 21. The signal output gear 13 rotates under the drive of the internal elements of the base meter and the signal input gear 14, the metal conductor is conductive when being contacted with the conductive wheel 1322, and is powered off when being contacted with the plastic wheel 1321, when the output gear rotates for 360 degrees, a counting pulse is generated, and the counting pulse is transmitted to the control unit 20 of the control board 2, so that pulse counting can be realized, and further the gas consumption, the water consumption and the like of the metering result are obtained. As shown in fig. 2, the conductive wheel 1322 is cylindrical, the plastic wheel 1321 is in a semi-cylindrical barrel shape, and of course, the plastic wheel 1321 may be another insulator wheel, the plastic wheel 1321 is enveloped on the outer surface of the conductive wheel 1322, that is, is wrapped on the outer surface of the conductive wheel 1322, and a step 1323 is formed at the transition between the side surface of the conductive wheel 1322 and the side surface of the plastic wheel 1321. The step 1323 may achieve signal discrimination. The conductive wheel 1322 is integrally injection molded with the plastic wheel 1321. The metal conductor is adopted to be in contact with the conductive wheel 1322 of the signal output gear to be connected with the conductive signal, and the metal conductor is in contact with the plastic wheel 1321 or other insulators to be disconnected, so that the pulse metering of the electric signal is realized, the more accurate sampling can be realized, and the problems of no interference, no magnetic interference and the like are solved. The scheme has the technical advantages of no interference from external signals, accurate measurement, few structural parts and convenient assembly.
First embodiment:
referring to fig. 2 to 4, in this embodiment, the metal conductor includes a metal spring 22, one end of the metal spring 22 is provided with a metal ball 23, the metal ball 23 abuts against the wheel portion, and the other end of the metal spring 22 is electrically connected with the main control unit through a wire 21. The counter 1 is further provided with a signal input gear 14, the character wheel set 12 includes a first character wheel 121, the signal input gear 14 is meshed with the first character wheel 121, the signal input gear 14 may be a gear or may be a two-layer cone pulley, and the first character wheel 121 is meshed with a gear portion 1321 of the signal output gear 13. The signal input gear 14 drives the first character wheel 121 to rotate, and the first character wheel 121 drives the signal output gear 14 to rotate, at this time, the signal input gear 14 and the signal output gear 13 are coaxial and different, that is, the signal input gear 14 cannot directly drive the signal output gear 13 to rotate. The counter frame 11 is extended with a mounting platform 15, the mounting platform 15 is provided with a bracket 151, the signal output gear 13 is arranged on the counter frame 11 through the bracket 151, the bracket 151 comprises a via hole 1511, and the metal screw 24 is connected with one end of the metal spring 22 in a low-voltage manner after sequentially passing through a wire terminal 211 and the via hole 1511 which are positioned on the wire 21. The metal balls 23 are steel balls. In operation, the metal spring 25 is in a compressed state and has a force acting on the steel ball to make the steel ball prop against the rotating wheel portion. Thus, the steel balls can be fully contacted with the rotating wheel part. During assembly, steel balls are arranged in steel ball fixing columns, namely right holes of the through hole 1511, then the metal springs 25 are arranged in the steel ball fixing columns, then the hexagon nuts 26 are sleeved on the steel ball fixing columns, the connecting terminals 211 at the ends of the wires 21 are sleeved on the metal screw 24, and finally the metal screw 24 is fixed through the hexagon nuts 26. The metal screw 24 is propped against the metal sheet 25 at the tail part of the metal spring 25, the metal spring 25 is compressed against the steel ball, and the steel ball is contacted with the rotating wheel part of the signal output gear 13. The rotating wheel part is provided on the gear part, and the upper part is fixed by a fixing cap 1324. When two steel balls are simultaneously contacted with the conductive wheel 1322 in the gear rotation process, the circuit is conducted, the conducting wire 21 and the main control unit 20 on the control board 2 form a closed circuit, and the main control unit 20 obtains a voltage signal. When the gear rotates to a certain position, one steel ball is in contact with the conductive wheel 1322, and the other steel ball is in contact with the plastic wheel 1321, the circuit is disconnected, and the main control unit 20 on the control board 2 obtains another voltage signal. The master control unit 20 meters the function by distinguishing between signals of different voltages.
Specific embodiment II:
as shown in fig. 5 and 6, the difference between the present embodiment and the first embodiment is that: the metal conductor comprises a metal spring piece 31 connected with the wire 21, and the metal spring piece 31 is riveted with the wire 21 through a riveting terminal 32. The counter frame 11 is extended with a mounting platform 15, the signal output gear 13 is disposed on the mounting platform 15, a "Z" shaped limit groove 152 is formed on the mounting platform 15, and the metal spring plate 31 is limited in the "Z" shaped limit groove 152. The metal spring plate 31 is a stainless steel plate, and the thickness of the metal spring plate 31 is 0.03-0.1 mm. The spring force and stiffness of this thickness are well suited to this construction. Two metal spring plates 31 are arranged, one of the metal spring plates 31 is always in contact with the conductive wheel 1322 to be in a connection state, the other metal spring plate 31 is in contact with the conductive wheel 1322 in the rotating process of the rotating wheel part, and is in contact with the plastic wheel 1321, when the metal spring plate is in contact with the conductive wheel 1322, the main control unit 20 acquires a signal, and when the metal spring plate is in contact with the plastic wheel 1321, the main control unit 2 acquires another signal, and metering is realized by judging the difference of the signals.
Third embodiment:
as shown in fig. 7 and 8, the present embodiment is different from the above embodiment in that: the signal input gear 14 is meshed with the first character wheel 121, the signal input gear 14 drives the signal output gear 13 to rotate, the signal output gear 13 drives the signal input gear 14 to rotate, and the signal input gear 14 drives the first character wheel to rotate.
Fourth embodiment:
the difference between this embodiment and the above embodiment is that the counter frame 11 is further provided with a signal input gear 14, the character wheel set 12 includes a first character wheel 121, the signal input gear 14 is coaxially connected with the signal output gear 13, the signal output gear 13 is meshed with the first character wheel 121, and the signal input gear 14 drives the first character wheel 121 and the signal output gear 13 to rotate at the same time.
It is of course easy to understand that in order to realize the transmission of the print wheel and space utilization, a transition gear may be further disposed between the first print wheel 121 and the signal output gear 13, and the transition gear may be one or multiple transition gears.
In addition to the above preferred embodiments, the present invention has other embodiments, and various changes and modifications may be made by those skilled in the art without departing from the spirit of the invention, which is defined in the appended claims.
Claims (9)
1. The utility model provides an intelligent metering device brush sampling count structure, includes counter and control panel, the counter includes counter frame and sets up word wheelset and signal output gear on the counter frame, be equipped with master control unit, its characterized in that on the control panel: the signal output gear comprises a gear part and a rotating wheel part, the rotating wheel part comprises a plastic wheel and a conductive wheel, the rotating wheel part is abutted with a metal conductor, and the metal conductor is electrically connected with a main control unit on the control board through a wire;
the conductive wheel is cylindrical, the plastic wheel is semi-cylindrical and barrel-shaped, the plastic wheel is enveloped on the outer surface of the conductive wheel, and a step is formed at the transition part between the side surface of the conductive wheel and the side surface of the plastic wheel;
the metal conductor is electrically conductive when in contact with the conductive wheel portion, is electrically disconnected when in contact with the plastic wheel portion, and generates a count pulse when the output gear rotates 360 degrees.
2. The intelligent metering device brush sampling and counting structure according to claim 1, wherein the metal conductor comprises a metal spring, one end of the metal spring is provided with a metal ball, the metal ball is abutted to the rotating wheel part, and the other end of the metal spring is electrically connected with the main control unit through a wire.
3. The intelligent metering device brush sampling counting structure according to claim 2, wherein the counter frame is provided with a mounting platform in an extending mode, the mounting platform is provided with a support, the signal output gear is arranged on the counter frame through the support, the support comprises a through hole part, and the metal screw rod sequentially passes through a wire terminal and the through hole part which are positioned on the wire and then is in butt joint with one end of the metal spring.
4. The brush sampling and counting structure of intelligent metering instrument according to claim 3, wherein the metal ball is a steel ball, and the metal spring is in a compressed state and has a force acting on the steel ball to make the steel ball prop against the rotating wheel part when in operation.
5. The intelligent metering device brush sampling and counting structure according to claim 1, wherein the metal conductor comprises a metal spring connected with a wire, and the metal spring is riveted with the wire through a riveting terminal.
6. The intelligent metering device brush sampling and counting structure according to claim 5, wherein the counter frame is provided with a mounting platform in an extending mode, the signal output gear is arranged on the mounting platform, a Z-shaped limiting groove is formed in the mounting platform, and the metal elastic sheet is limited in the Z-shaped limiting groove.
7. The intelligent metering device brush sampling counting structure according to claim 6, wherein the metal elastic sheet is a stainless steel sheet, and the thickness of the metal elastic sheet is 0.03-0.1 mm.
8. The intelligent metering device brush sampling counting structure according to claim 1, wherein the conductive wheel and the plastic wheel are integrally injection molded.
9. The brush sampling counting structure of an intelligent metering device according to any one of claims 1 to 6, wherein the counter is further provided with a signal input gear, the character wheel set comprises a first character wheel, the signal input gear is meshed with the first character wheel, and the first character wheel is meshed with the gear part; or the counter is also provided with a signal input gear, the character wheel group comprises a first character wheel, the signal input gear is coaxially connected with a signal output gear, the signal output gear is meshed with the first character wheel, and the signal input gear drives the first character wheel and the signal output gear to rotate at the same time; or the counter is also provided with a signal input gear, the character wheel group comprises a first character wheel, the signal input gear is meshed with the first character wheel, the signal input gear drives a signal output gear to rotate, and the signal output gear drives the first character wheel to rotate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811392598.8A CN109341737B (en) | 2018-11-21 | 2018-11-21 | Brush sampling counting structure of intelligent metering instrument |
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| CN201811392598.8A CN109341737B (en) | 2018-11-21 | 2018-11-21 | Brush sampling counting structure of intelligent metering instrument |
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| CN109341737A CN109341737A (en) | 2019-02-15 |
| CN109341737B true CN109341737B (en) | 2024-04-12 |
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| CN205002804U (en) * | 2015-08-19 | 2016-01-27 | 天津鸥翼科技发展有限公司 | Intelligent gas meter |
| CN205426267U (en) * | 2016-03-22 | 2016-08-03 | 成都千嘉科技有限公司 | Measurement meter reading structure and reading device based on inductance |
| CN107421597A (en) * | 2017-06-28 | 2017-12-01 | 金卡智能集团股份有限公司 | A kind of metering device accounting device mounting assembly and gas meter, flow meter |
| CN207180797U (en) * | 2017-08-29 | 2018-04-03 | 杭州先锋电子技术股份有限公司 | Flowmeter high-resolution based on conductive plastic potentiometer counts conversion equipment |
| CN207351505U (en) * | 2017-10-16 | 2018-05-11 | 金卡智能集团股份有限公司 | A kind of intelligent gas meter samples counting structure |
| CN207408460U (en) * | 2017-11-01 | 2018-05-25 | 嘉兴市星皓仪表有限公司 | A kind of mechanical Electric energy meter counter |
| CN207540608U (en) * | 2017-11-10 | 2018-06-26 | 浙江威星智能仪表股份有限公司 | Gas meter, flow meter metering signal harvester |
| CN207779486U (en) * | 2018-01-23 | 2018-08-28 | 金卡智能集团股份有限公司 | Intelligent metering instrument samples number system and gas meter, flow meter |
| CN108180958A (en) * | 2018-03-01 | 2018-06-19 | 北京优耐燃气仪表有限公司 | A kind of gas meter counting mechanism and gas meter, flow meter |
| CN108709598A (en) * | 2018-08-13 | 2018-10-26 | 金卡智能集团股份有限公司 | A kind of intelligent metering instrument sampling counting component of accurate metering |
| CN209131694U (en) * | 2018-11-21 | 2019-07-19 | 金卡智能集团股份有限公司 | Intelligent metering instrument brush sample count structure |
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