CN111044109A - Metering instrument photoelectric sampling assembly and metering instrument - Google Patents
Metering instrument photoelectric sampling assembly and metering instrument Download PDFInfo
- Publication number
- CN111044109A CN111044109A CN201911239330.5A CN201911239330A CN111044109A CN 111044109 A CN111044109 A CN 111044109A CN 201911239330 A CN201911239330 A CN 201911239330A CN 111044109 A CN111044109 A CN 111044109A
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- 238000005070 sampling Methods 0.000 title claims abstract description 51
- 230000005693 optoelectronics Effects 0.000 claims description 5
- 230000005622 photoelectricity Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009532 heart rate measurement Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/661—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters using light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/662—Constructional details
-
- 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
- G01F15/068—Indicating or recording devices with electrical means
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention relates to the technical field of flow measurement, in particular to a photoelectric sampling assembly of a metering instrument and the metering instrument with the photoelectric sampling assembly. Photoelectric sampling subassembly includes the rotation piece and the first control panel of being connected with the basic table, rotate the piece including the runner that is equipped with the anti-dazzling screen, install photoelectric device on the first control panel, be equipped with the anti-dazzling screen that corresponds the setting with photoelectric device on the runner, photoelectric device includes light emitting device and light receiving device, light emitting device is to light receiving device emitted light signal, and when the runner was rotatory, anti-dazzling screen interval nature is between light emitting device and the light receiving device. The invention also discloses a metering instrument with the photoelectric sampling assembly. The method has the technical advantages of obvious intensity gradient information of sampled light, strong anti-interference capability and low noise.
Description
Technical Field
The invention relates to the technical field of flow measurement, in particular to a photoelectric sampling assembly of a metering instrument and the metering instrument with the photoelectric sampling assembly.
Background
With the rapid development of intelligent instruments, higher requirements on accuracy and high performance of end metering are required in the industry. The traditional gas meter sampling mode mainly adopts a magnetic sampling mode; the magnetic sampling metering technology is simple in design, low in power consumption and high in sampling precision. The conventional mechanical transmission mode is gear transmission to transmit the flow information in the base meter, and a magnetic pulse mode is adopted for sampling and metering.
The traditional magnetic sensing metering technology is easy to be interfered by a magnetic field, causes the technical defects of inaccurate sampling and inaccurate metering result, and causes the limitation of the application occasions. Meanwhile, a plurality of meters adopt indoor hanging meters, customers have requirements on the noise generated by the meters, and the traditional gear transmission mode can increase the noise generated when the meters work more or less in the operation process.
The prior art proposes a scheme of reflective light sampling measurement, and adopts a mode of utilizing light reflection intensity information to perform pulse measurement, but the reflective measurement mode is easily interfered by external light, and meanwhile, the intensity of the emitted light and the reflected light is not changed greatly, the light intensity difference is small, measurement signals are difficult to distinguish sometimes, and the influence on sampling data is large.
Disclosure of Invention
In order to further solve the technical problems, the invention provides a photoelectric sampling assembly of a metering instrument and the metering instrument with the photoelectric sampling assembly, and the photoelectric sampling assembly has the technical advantages of obvious light intensity gradient information, strong anti-interference capability and low noise.
The invention provides a photoelectric sampling assembly of a metering instrument, which comprises a rotating part and a first control board, wherein the rotating part is connected with a base meter, the rotating part comprises a rotating wheel provided with a light shading sheet, a photoelectric device is arranged on the first control board, the light shading sheet corresponding to the photoelectric device is arranged on the rotating wheel, the photoelectric device comprises a light emitting device and a light receiving device, the light emitting device emits light signals to the light receiving device, and when the rotating wheel rotates, the light shading sheet intermittently passes between the light emitting device and the light receiving device.
In a further scheme, the rotating part further comprises a magnetic part, a sleeve rod is arranged on the rotating wheel, and the magnetic part is sleeved on the sleeve rod.
According to a further scheme, a groove is formed in one end of the magnetic part, a limiting protrusion arranged corresponding to the groove is further arranged on the rotating part, and the limiting protrusion is embedded in the groove.
In a further scheme, a fixing plug is arranged at the other end of the magnetic part and is inserted into the sleeve rod to fix the magnetic part on the sleeve rod.
According to a further scheme, the shading sheet is in an integral continuous arc shape, the number of the photoelectric devices is two, and a smaller arc corresponding central angle formed between the two photoelectric devices is half of the angle of the arc corresponding central angle of the shading sheet.
According to a further scheme, the shading sheet is in a semi-circular arc shape, the number of the photoelectric devices is two, and a central angle corresponding to a smaller circular arc formed between the two photoelectric devices is a 90-degree circular arc.
According to the invention, a further scheme can be obtained, the shading sheets are in a plurality of arc shapes arranged at intervals, each arc shape is the same and is uniformly distributed on the rotating wheel, the number of the photoelectric devices is two, and the central angle corresponding to the smaller arc formed between the two photoelectric devices is half of the central angle corresponding to any section of the shading sheet arc.
In a further scheme, the number of the light-shielding sheets is two, the central angle of the light-shielding sheet corresponding to the circular arc is 90 degrees, and the smaller circular arc formed by the two photoelectric devices is the circular arc with the corresponding central angle of 45 degrees.
In a further scheme, the photoelectric device is a device integrating a light emitter and a light receiver, and the shading sheet and the rotating wheel are integrally formed.
In a further scheme, a rotating part mounting part is arranged on the base surface, and the magnetic part is embedded in the mounting part.
In a further scheme, the first control board is also electrically connected with a second control board.
The invention also discloses a metering instrument applying the photoelectric sampling assembly, which comprises a base meter, wherein the photoelectric sampling assembly of the metering instrument in the scheme is arranged on the base meter.
According to a further scheme, a controller is further arranged on the base meter, the first control board is installed in the controller, the controller comprises a lower shell and an upper shell matched with the lower shell, a fixing column is arranged on the lower shell, and the first control board is fixedly installed on the fixing column.
According to a further scheme, a bayonet is arranged at the top end of the fixing column, and the first control board is fixed on the upper surface of the first control board through the buckle.
After the technical scheme is adopted, the invention has the following advantages:
1. metering device photoelectric sampling subassembly includes the rotation piece and the first control panel of being connected with the basic table, rotate the piece including the runner that is equipped with the anti-dazzling screen, install photoelectric device on the first control panel, be equipped with the anti-dazzling screen that corresponds the setting with photoelectric device on the runner, photoelectric device includes light emitting device and light receiving device, and when the runner was rotatory, anti-dazzling screen interval nature through between light emitting device and the light receiving device. The light shading sheet periodically rotates on the light stroke route, so that the light emitted by the light emitting tube is periodically received by the light receiving tube to form light and is periodically not emitted by the light receiving tube, and the light intensity gradient is obvious between the light and the light, so that the signals form obvious contrast, and the metering signals are more accurate. Meanwhile, the light correlation type metering mode is adopted, so that the magnetic interference can be effectively resisted, and the problem that the metering light in the light reflection type metering mode in the prior art is easily interfered by external light can be effectively resisted.
2. The rotating piece connected on the base table drives the shading sheet to rotate, so that the noise problem caused by other gear transmissions is avoided, and the noise is effectively reduced.
3. The shading sheet is in a continuous arc shape, the number of the photoelectric devices is two, and the smaller arc formed between the two photoelectric devices is half of the arc shape of the shading sheet. The anti-dazzling screen is semi-circular arc, photoelectric device is two. Therefore, the two photoelectric devices can be guaranteed to be sequentially shielded, time sequence measurement is realized, and positive and negative rotation detection of the rotating wheel, namely positive and negative circulation measurement of the base surface airflow, can be realized.
4. The smaller circular arc formed between the two photoelectric devices is half of the circular arc of the shading sheet. The photoelectric device is not always in a normally open state, and power consumption can be effectively reduced.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is an exploded view of an optoelectronic sampling assembly of the present invention;
FIG. 2 is a cross-sectional view of an optoelectronic sampling assembly in accordance with the present invention;
FIG. 3 is a diagram showing the relationship between the position of the light-shielding sheet and the position of the optoelectronic device according to the present invention;
FIG. 4 is a diagram showing the relationship between the rotation timing sequences of the light-shielding sheet and the photoelectric device according to the present invention;
FIG. 5 is an exploded view (in part) of the metering device of the present invention;
FIG. 6 is a schematic view of the installation position of the sampling plate according to the present invention;
fig. 7 is a diagram illustrating a relationship between a light shielding sheet and an optoelectronic device according to another embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific examples.
Other embodiments of the present invention than the preferred embodiments described above will be apparent to those skilled in the art from the present invention, and various changes and modifications can be made therein without departing from the spirit of the present invention as defined in the appended claims.
The first embodiment is as follows:
specifically, as shown in fig. 1 to 4, the photoelectric sampling assembly for a metering device includes a rotating member 31 connected to a base meter, and a first control board 32, where the first control board 32 is further connected to a second control board (not shown). First control panel 31 is the sampling board, and the second control panel is the control panel, and the sampling board is transmitted the control panel after handling sampling signal, is equipped with the main control unit on the control panel, carries out analysis, storage and control to the signal. The rotating member 31 includes a rotating wheel 311 having a light shielding plate 312, and in this embodiment, the rotating wheel 311 and the light shielding plate 312 are integrally formed.
Specifically, as shown in fig. 1 and fig. 2, a photoelectric device 321 is installed on the first control board 32, that is, the sampling board, a light shielding sheet 312 corresponding to the photoelectric device 321 is installed on the rotating wheel 311, the photoelectric device 321 includes a light emitting device 3211 and a light receiving device 3212, and the light emitting device 3211 emits a light signal, which may be visible light, infrared light, ultraviolet light, or the like, to the light receiving device 3212. The visible light can also be invisible light, so that the variety of light is increased, and the visible light can not be interfered by external light or is slightly interfered by the external light by adopting the correlation light sampling. When the wheel rotates, the light shielding sheet 312 intermittently passes between the light emitting device 3211 and the light receiving device 3212. Thus, the light receiving device 3212 periodically receives light emitted from the light emitting device 3211, the rotating member 31 further includes a magnetic member 314, the magnetic member 314 is coupled to another magnetic member located in the base table, the internal magnetic member rotates to drive the magnetic member 314 to rotate, and further drives the rotating wheel 311 to rotate, the rotating wheel 311 is provided with a sleeve rod 313, and the magnetic member 314 is sleeved on the sleeve rod 313. A groove 3141 is formed at one end of the magnetic member 314, a limiting protrusion 3131 corresponding to the groove 3141 is further disposed on the rotating member 31, and the limiting protrusion 3131 is embedded in the groove 3141. The fixation of the magnetic element 314 is effectively realized, and the relative sliding between the magnetic element 314 and the loop bar 313 can be avoided. The other end of the magnetic member 314 is provided with a fixing plug 315, and a plug rod 3151 on the fixing plug 315 is inserted into the sleeve rod 313 to fix the magnetic member 314 on the sleeve rod 313.
Specifically, as shown in fig. 1, 3 and 4, in this embodiment, the light shielding sheet 312 is in an overall arc shape and is integrally disposed on the circumferential side of the rotating wheel 311, the number of the photoelectric devices 321 is two, and a central angle corresponding to a smaller arc formed by the two photoelectric devices is half of a central angle corresponding to an arc of the light shielding sheet 312. Here, the arc of the light shielding sheet 312 is easy to understand, because the rotating wheel 311 is in a disk shape, the two photoelectric devices can also determine a concentric circle with the disk by using the center of the disk, that is, the projection of the two photoelectric devices on the plane where the disk is located can be regarded as two points, and three points with the center of the disk can determine a concentric circle with the light shielding sheet 312. The central angle is defined according to the imaginary circle so as to define the position arrangement relationship of the two photoelectric devices and the light shielding sheets.
The light shielding sheet 312 shown in fig. 3 is a semi-circular arc, the corresponding central angle is 180 °, and the smaller arc formed by the extension lines of the two photoelectric devices is a 90 ° arc. Namely, the extension lines of two photoelectric devices are arranged perpendicular to each other, and the photoelectric devices are devices integrating the light emitter and the light receiver. It can be a discrete device, but the two devices should not be too far apart to ensure light intensity and sampling effect.
Specifically, as shown in fig. 5 and 6, a metering device may be a gas meter, a water meter, a heat meter, etc. by using the above photoelectric sampling assembly, and this embodiment takes a diaphragm gas meter as an example, and specifically includes a base meter 10, where the base meter 10 is provided with the photoelectric sampling assembly of the metering device. The base watch 10 is provided with a rotating member mounting portion 11, and the magnet 314 is fitted in the mounting portion 11. The base watch 10 is further provided with a controller, the first control board 32, namely the sampling board, is installed inside the controller, the controller includes a lower casing 20 and an upper casing (not shown in the figure) matched with the lower casing 20, the lower casing 20 is provided with a fixing column 201, and the first control board 32 is fixedly installed on the fixing column 201. The top end of the fixing column 201 is provided with a buckle, the buckle buckles the upper surface of the sampling plate to ensure that the shading sheet 312 is positioned inside the photoelectric device, and the buckle buckles the upper surface of the first control plate to fix the first control plate. Like this, the circulation of the inside air current of base table drives the operation of involucra or core assembly, and inside magnetic device is rotatory to be driven magnetic part 314 and rotates, and then drives runner 311 operation, and the transmission of light among two photoelectric devices is sheltered from in proper order to anti-dazzling screen 312 like this, realizes the signal of chronogenesis nature, and the control panel both can judge measurement pulse and gas volume according to the signal of chronogenesis nature.
The second embodiment is as follows:
as shown in fig. 7, the difference between the present embodiment and the first embodiment is: the anti-dazzling screen 312 is in the shape of a plurality of arc segments arranged at intervals, each arc segment is in the shape of the same arc and is evenly distributed on the rotating wheel 311, the number of anti-dazzling screens is two, and certainly can be three or more, the two anti-dazzling screens are all fan-shaped, and the corresponding central angle is 90 degrees. The number of the photoelectric devices 321 is two, and a smaller arc formed between the two photoelectric devices is half of an arc of any section of the shading sheet. I.e. 45 deg. which is half of 90 deg.. The figure clearly shows that the number of the light-shielding sheets 321 is two, the number of the light-shielding sheets 321 is 90 degrees corresponding to the arc, and the smaller arc formed between the two photoelectric devices is 45 degrees. Other components and operation principles are the same as those of the first embodiment, and are not described herein.
The third concrete embodiment:
the difference between the present embodiment and the first embodiment is that the first control board 32 integrates the functions of the sampling board and the control board, that is, the first control board 32 has the functions of sampling analysis and control. This allows the control board to be integrated.
Other embodiments of the present invention than the preferred embodiments described above will be apparent to those skilled in the art from the present invention, and various changes and modifications can be made therein without departing from the spirit of the present invention as defined in the appended claims.
Claims (14)
1. The utility model provides a measuring instrument photoelectricity sampling component, includes the rotation piece and the first control panel of being connected with the base table, its characterized in that: the rotating part comprises a rotating wheel provided with a light shielding sheet, a photoelectric device is installed on the first control board, the light shielding sheet corresponds to the photoelectric device, the photoelectric device comprises a light emitting device and a light receiving device, the light emitting device emits light signals to the light receiving device, and when the rotating wheel rotates, the light shielding sheet intermittently passes through the light emitting device and the light receiving device.
2. The optoelectronic sampling assembly of claim 1, wherein the rotating member further comprises a magnetic member, the rotating wheel is provided with a sleeve rod, and the magnetic member is sleeved on the sleeve rod.
3. The photoelectric sampling assembly of claim 2, wherein a groove is formed at one end of the magnetic member, and a limiting protrusion is disposed on the rotating member and corresponding to the groove, and the limiting protrusion is embedded in the groove.
4. The photoelectric sampling assembly of the metering device of claim 3, wherein a fixing plug is arranged at the other end of the magnetic member, and the fixing plug is inserted into the loop bar to fix the magnetic member on the loop bar.
5. The photoelectric sampling assembly of any one of claims 1 to 4, wherein the light shielding plate is in the shape of an integral circular arc, the number of the photoelectric devices is two, and a central angle corresponding to a smaller circular arc formed by the two photoelectric devices is half of an angle corresponding to the central angle of the circular arc of the light shielding plate.
6. The photoelectric sampling assembly of the metering device of claim 5, wherein the light shielding plate is in a shape of a semi-circular arc, the number of the photoelectric devices is two, and the central angle of the smaller circular arc formed by the two photoelectric devices is 90 degrees.
7. The photoelectric sampling assembly of any one of claims 1 to 4, wherein the light shielding plates are in a plurality of arc shapes arranged at intervals, each arc shape is the same and is uniformly arranged on the rotating wheel, the number of the photoelectric devices is two, and a central angle corresponding to a smaller arc formed by the two photoelectric devices is half of that corresponding to any one arc of the light shielding plates.
8. The photoelectric sampling assembly of claim 7, wherein the number of the light shielding plates is two, the light shielding plates correspond to a central angle of 90 °, and the smaller circular arc formed by the two photoelectric devices corresponds to a central angle of 45 °.
9. The photoelectric sampling assembly of claim 6 or 8, wherein the photoelectric device is a device integrating a light emitter and a light receiver, and the light shielding sheet is integrally formed with the rotating wheel.
10. The photoelectric sampling assembly of claim 9, wherein the base meter is provided with a mounting portion for a rotating member, and the magnetic member is embedded in the mounting portion.
11. The photoelectric sampling assembly of the metering device of claim 1, wherein the first control board is further electrically connected to a second control board.
12. A measuring instrument comprising a base meter, wherein the base meter is provided with the photoelectric sampling assembly of the measuring instrument according to any one of claims 1 to 11.
13. The measuring instrument according to claim 12, wherein a controller is further provided on the base watch, the first control board is installed in the controller, the controller includes a lower case and an upper case engaged with the lower case, a fixing post is provided on the lower case, and the first control board is fixedly installed on the fixing post.
14. The metrology instrument of claim 12 wherein said mounting posts have a snap on top end, said snap engaging said first control plate upper surface to secure said first control plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911239330.5A CN111044109A (en) | 2019-12-06 | 2019-12-06 | Metering instrument photoelectric sampling assembly and metering instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911239330.5A CN111044109A (en) | 2019-12-06 | 2019-12-06 | Metering instrument photoelectric sampling assembly and metering instrument |
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| CN111044109A true CN111044109A (en) | 2020-04-21 |
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| CN201911239330.5A Pending CN111044109A (en) | 2019-12-06 | 2019-12-06 | Metering instrument photoelectric sampling assembly and metering instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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| US20190128720A1 (en) * | 2016-04-15 | 2019-05-02 | Canetis Metering Limited | An apparatus and a method for determining a measurement error of a displacement volumetric meter, a meter monitoring device, and a meter measurement error determining device |
| CN211717526U (en) * | 2019-12-06 | 2020-10-20 | 金卡智能集团股份有限公司 | Metering instrument photoelectric sampling assembly and metering instrument |
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2019
- 2019-12-06 CN CN201911239330.5A patent/CN111044109A/en active Pending
Patent Citations (8)
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| CN1417564A (en) * | 2001-11-01 | 2003-05-14 | 黄贤良 | Magnetiaclly driven optoelectronic flowmeter |
| CN101762288A (en) * | 2009-11-14 | 2010-06-30 | 湖南常德牌水表制造有限公司 | Micropower photoelectric reversible intelligence sensor |
| US20190128720A1 (en) * | 2016-04-15 | 2019-05-02 | Canetis Metering Limited | An apparatus and a method for determining a measurement error of a displacement volumetric meter, a meter monitoring device, and a meter measurement error determining device |
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| 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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