CN212963522U - Sampling counting assembly of metering device and metering device with sampling counting assembly - Google Patents
Sampling counting assembly of metering device and metering device with sampling counting assembly Download PDFInfo
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- CN212963522U CN212963522U CN202021921871.4U CN202021921871U CN212963522U CN 212963522 U CN212963522 U CN 212963522U CN 202021921871 U CN202021921871 U CN 202021921871U CN 212963522 U CN212963522 U CN 212963522U
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Abstract
The utility model relates to a metering device's sample count subassembly and have its metering device, the sample count subassembly includes the counter and corresponds the main control board that sets up with the counter, be equipped with input gear on the counter, word wheelset and sample output gear, the output gear connection of input gear and metering device's base table, input gear and output gear will flow through the fluidic flow information transmission of base table to word wheelset and sample output gear through the pivoted mode, be provided with the signal reflection portion of salient wheel quotation on the rim plate of sample output gear, main control board and rim plate face parallel arrangement, be provided with on the main control board with the signal sensor that the rim plate face staggers and extend to signal reflection portion, signal sensor is to signal reflection portion signal transmission and with the signal transmission of signal reflection portion main control unit on the main control board. The utility model discloses a stagger the rim plate face with signal sensor and set up on the main control board to this reduces the requirement to relative position between signal sensor and the sample output gear.
Description
Technical Field
The utility model relates to a flowmeter technical field, concretely relates to metering device's sample count subassembly and have its metering device.
Background
At present, the light sampling method for acquiring the metering pulse by the metering instrument in the market is a reflection type, and the metering instrument mainly acquires the rotation signal of a sampling gear through a pair of infrared geminate transistors so as to identify whether the metering instrument has metering and metering data.
Specifically, infrared signals sent by an infrared transmitting tube in the infrared geminate transistors are reflected back to the infrared receiving tube through the wheel disc surface of the sampling gear, the wheel disc surface of the sampling gear is coated with black and white colors, the reflection intensity of the infrared signals passing through the black surface and the white surface is different, so that the intensity of the infrared signals received by the infrared receiving tube is different, when the sampling gear rotates, the signals on the infrared receiving tube show a periodic change rule, a main control chip on a PCB collects the periodic signals at intervals, the rotation data of the digital wheel is identified according to the intensity of the collected infrared signals, and the purpose of metering is achieved.
At present, the transmission direction and the reflection direction of infrared light are with the rim plate face vertically direction of sample gear, because sample gear and PCB board are more close to, the position difference of the sample gear of different producers can lead to the installation degree of difficulty of infrared geminate transistors great, in addition measuring instrument all probably leads to the mounted position of infrared geminate transistors to appear the deviation at whole assembly and transportation, and measuring instrument is in assembly and transportation, the infrared geminate transistors appears hitting the condition that the piece became invalid easily, the work unreliability of sample measuring instrument has been increased.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving at least one among the above-mentioned technical problem to a certain extent.
The utility model provides a first aspect of a sampling counting assembly of a metering instrument, the sampling counting assembly comprises a counter and a main control board arranged corresponding to the counter, an input gear is arranged on the counter, word wheelset and sample output gear, the input gear is connected with the output gear of the basic table of metering device, input gear and output gear will flow through the fluid flow information transmission of basic table to word wheelset and sample output gear through the pivoted mode, be provided with the signal reflection portion of salient quotation on the rim plate of sample output gear, main control board and the parallel arrangement of quotation, be provided with on the main control board with the stagger of sample output gear and to the signal sensor of signal reflection portion extension, signal reflection portion sets up perpendicularly on the quotation, signal sensor is to signal reflection portion signal transmission and with the main control unit on the main control board of signal reflection portion reflected signal transmission.
The technical scheme of the utility model beneficial effect does: the utility model discloses a be provided with the signal reflection portion of salient wheel quotation on the rim plate of sample output gear, and through signal sensor to signal reflection portion transmission signal and with the signal transmission of signal reflection portion reflection to the main control board, the main control board is according to the fluidic flow information of signal response flow through basic table that signal sensor received, furtherly, be provided with the signal reflection portion of salient wheel quotation on the rim plate, can make signal sensor install the position of the sample output gear that staggers on the main control board, thereby reduce the restriction to relative position between signal sensor and the sample output gear, reduce because the unreliable nature that the deviation leads to sample counting assembly appears in signal sensor's mounted position increases.
According to the utility model discloses an embodiment, signal reflection part includes and sets up the arc on the quotation along circumference, and sample output gear is at the pivoted in-process, and the outer wall of arc reflects the signal that signal sensor launched with the inner wall is in turn.
In this embodiment, the pulse signal emitted by the signal sensor can generate reflected signals with different intensities due to different paths after being reflected by the outer wall and the inner wall of the arc-shaped plate, the intensity of the reflected signals can be accurately identified by the main control unit on the main control board, and the purpose of metering is realized by an algorithm.
According to the utility model discloses an embodiment, the outer wall and the inner wall of arc are provided with the coating of different colours respectively, and the outer wall and the inner wall reflected signal of the received arc of signal sensor are strong and weak different.
In this embodiment, the outer wall and the inner wall of the arc-shaped plate are provided with coatings of different colors, for example, the inner wall and the outer wall are provided with coatings of different black and white colors, so that the purpose of reflecting pulse signals with different intensities can be achieved, and the accuracy of identifying the rotation state of the sampling output gear is improved.
According to the utility model discloses an embodiment, signal sensor's the relative main control board parallel arrangement of emergence end, and signal reflection part is to signal sensor's the perpendicular signal sensor's of projection of direction emergence end.
In the embodiment, the signal reflection part is vertically arranged on the wheel disc surface, and the projection of the signal reflection part towards the direction of the signal sensor is vertical to the generation end of the signal sensor, so that the matching degree between the signal sensor and the signal reflection part is improved, and the deviation phenomenon of the signal emitted by the signal sensor on the signal reflection part is reduced.
According to the utility model discloses an embodiment, signal sensor includes pulse emission portion and pulse receiving portion, and pulse emission portion sets up with pulse receiving portion integrated into one piece, and the pulse signal of pulse emission portion transmission is reflected to pulse receiving portion through signal reflection portion.
In this embodiment, the pulse signal emitted by the pulse emitting portion is reflected to the pulse receiving portion after passing through the signal reflecting portion, and the pulse signal emitted by the pulse emitting portion can be sufficiently reflected to the pulse receiving portion after passing through the signal reflecting portion, so that the detection accuracy of the signal sensor is improved.
According to the utility model discloses an embodiment, pulse emission portion includes infrared transmitting tube, and pulse receiving portion includes infrared receiving tube, and the infrared signal of infrared transmitting tube transmission reflects to infrared receiving tube through signal reflection portion.
In this embodiment, the infrared transmitting tube and the infrared receiving tube have good stability, and the infrared transmitting tube and the infrared receiving tube can sense different paths and different reflecting surfaces well.
According to the utility model discloses an embodiment, infrared emission pipe with the connected mode of the IO mouth of infrared receiving tube and main control board includes: the collector of the infrared receiving tube is connected with the IO port of the main control board through the first current limiting circuit, the anode of the infrared transmitting tube is connected with the IO port of the main control board through the second current limiting circuit, and the emitter of the infrared receiving tube and the cathode of the infrared transmitting tube are both grounded.
In this embodiment, the resistors in the current limiting circuits (first and second current limiting circuits) are used to reduce the load-side current and prevent the device from being damaged.
According to the utility model discloses an embodiment, the connected mode of the IO mouth of infrared transmitting tube and infrared receiving tube and main control board includes: the collecting electrode of infrared receiving tube is connected with the collecting electrode of PNP triode via first current-limiting circuit, the positive pole of infrared transmitting tube is connected with the collecting electrode of PNP triode via second current-limiting circuit, the projecting pole of infrared receiving tube and the negative pole of infrared transmitting tube are all grounded, the base of PNP triode is connected with the IO mouth of main control board, the projecting pole of PNP triode is connected with the power, the collecting electrode of infrared receiving tube still is connected with the one end of decoupling circuit and the external interrupt mouth of main control board, the other end ground connection of decoupling circuit.
In this embodiment, the capacitor in the decoupling circuit filters the interference signal of the output signal, so as to reduce the influence of the noise of the component on other components.
According to the utility model discloses an embodiment, infrared receiving tube includes the phototriode.
The second aspect of the utility model provides a metering device, metering device include the base table and according to the utility model discloses a sample counting assembly of first aspect, the output gear of base table and the input gear of sample counting assembly are connected, and input gear is connected with the first character wheel of the word wheelset of sample counting assembly, and the sample output gear and input gear or the first character wheel of sample counting assembly are connected.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a first isometric view of a sample counter assembly according to an embodiment of the present invention;
FIG. 2 is a second isometric view of the sample counting assembly of FIG. 1;
fig. 3 is a block diagram of a signal sensor according to an embodiment of the present invention;
fig. 4 is a circuit diagram of the infrared pair transistor connection main control board according to an embodiment of the present invention;
fig. 5 is a schematic diagram of pulses generated by the infrared pair transistors according to an embodiment of the present invention.
Wherein the reference numbers are as follows:
100. a sampling counting assembly;
10. an input gear;
20. a character wheel group;
30. a sampling output gear; 31. a signal reflection unit;
40. a main control board;
50. a signal sensor; 51. a pulse emitting section; 52. a pulse receiving section.
210. A first current limiting circuit;
220. a second current limiting circuit;
230. a decoupling circuit;
r1, a first resistor;
r2, a second resistor;
c1, a first capacitance;
d1, infrared emission tube;
q1, infrared receiving tube.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the utility model discloses a measuring instrument and sample count subassembly thereof can be applied to the detection of oil, organic liquid, inorganic liquid, liquefied gas, natural gas and cryogenic fluid, and these all belong to the utility model discloses measuring instrument and sample count subassembly's protection scope.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof.
In the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
For convenience of description, spatially relative terms, such as "inner", "circumferential", "up", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. This spatially relative relationship is intended to encompass different orientations of the mechanism in use or operation in addition to the orientation depicted in the figures. For example, if the mechanism in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The mechanism may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 and 2, a first aspect of the present invention provides a sampling counting assembly 100 for a metering device, the sampling counting assembly 100 includes a counter and a main control board 40 corresponding to the counter, the counter is provided with an input gear 10, the character wheel set 20 and the sampling output gear 30, the input gear 10 is connected with an output gear (not shown in the figure) of a base meter of the metering device, the input gear 10 and the output gear of the base meter transmit flow information of fluid flowing through the base meter to the character wheel set 20 and the sampling output gear 30 in a rotating mode, a signal reflection part 31 protruding out of the wheel disc surface is further arranged on a wheel disc of the sampling output gear 30, the main control board 40 is arranged in parallel with the wheel disc surface, a signal sensor 50 staggered with the sampling output gear 30 and extending to the signal reflection part 31 is arranged on the main control board 40, and the signal sensor 50 transmits signals to the signal reflection part 31 and transmits signals reflected by the signal reflection part 31 to a main control unit on the main control board 40.
In this embodiment, the signal reflection part 31 protruding out of the disc surface is arranged on the disc of the sampling output gear 30, the signal sensor 50 transmits a signal to the signal reflection part 31 and transmits the signal reflected by the signal reflection part 31 to the main control board 40, the main control board 40 senses the flow information of the fluid flowing through the counter according to the signal received by the signal sensor 50, and further, the signal reflection part 31 protruding out of the disc surface is arranged on the disc, so that the signal sensor 50 can be installed on the main control board 40 at a position staggered with respect to the sampling output gear 30, the restriction on the relative position between the signal sensor 50 and the sampling output gear 30 is reduced, and the increase of the unreliability of the sampling counting assembly due to the deviation of the installation position of the signal sensor 50 is reduced.
With continued reference to fig. 1 and 2, according to an embodiment of the present invention, the signal reflection portion 31 is vertically disposed on the disc surface, the bottom of the signal sensor 50 is vertically disposed on the main control board 40, and the top of the signal sensor 50 extends toward the signal reflection portion 31 in a manner parallel to the main control board 40 by vertically bending the generation end of the signal sensor 50. Specifically, the generating end of the signal sensor 50 is vertically bent 90 ° with respect to the bottom of the signal sensor 50, and keeps a distance within 2mm-10mm from the sampling output gear 30, in the case that the signal sensor 50 is a pulse signal sensor, as shown in fig. 3, the signal sensor 50 includes a pulse transmitting portion 51 and a pulse receiving portion 52, the pulse transmitting portion 51 and the pulse receiving portion 52 are integrally formed, the pulse signal transmitted by the pulse transmitting portion 51 can be sufficiently reflected to the pulse receiving portion 52 after passing through the signal reflecting portion 31, because the allowable error range of the distance between the signal sensor 50 and the sampling output gear 30 is between 2mm and 10mm, the allowable error range is larger, the limitation on the relative position between the signal sensor 50 and the sampling output gear 30 is reduced, and the applicability of the main control board 40 and the signal sensor 50 to different installation environments and different base tables is improved.
With continued reference to fig. 1 and 2, according to an embodiment of the present invention, the signal reflection portion 31 includes an arc plate disposed on the disc surface along the circumferential direction, and the outer wall and the inner wall of the arc plate reflect the signal emitted by the signal sensor 50 alternately in the rotating process of the sampling output gear 30.
In this embodiment, make the arc with signal reflection part 31, the cambered surface height of arc is more than 3mm, and let main control board 40 keep more than 2mm with the distance of arc bottommost, in actual conditions, can adjust two heights according to the distance flexibility between different base tables and the main control board 40, the pulse signal that signal sensor 50 launched can produce the reflection signal of different intensity because the route is different after the outer wall of arc and the inner wall reflection, the intensity of reflection signal can accurately be discerned to the control unit on the main control board 40, the purpose of measurement is realized to the rethread algorithm.
In order to further distinguish the intensity of the signal reflected by the outer wall and the inner wall of the arc-shaped plate, according to the utility model discloses an embodiment is provided with the coating of different colours respectively at the outer wall of arc-shaped plate and the inner wall of arc-shaped plate, and the intensity of the outer wall and the inner wall reflected signal of the arc-shaped plate received by signal sensor 50 is different.
In this embodiment, the outer wall and the inner wall of the arc-shaped plate are provided with coatings of different colors, for example, the outer wall of the arc-shaped plate is provided with a white coating, the inner wall of the arc-shaped plate is provided with a black coating, and when the sampling output gear 30 rotates to make the outer wall of the arc-shaped plate located in the emission area of the signal sensor 50, the white coating enhances the reflection intensity of the pulse signal because the outer wall of the arc-shaped plate is provided with the white coating; when the sampling output gear 30 rotates to enable the inner wall of the arc-shaped plate to be located in the emission area of the signal sensor 50, the black coating weakens the reflection intensity of the pulse signals due to the fact that the inner wall of the arc-shaped plate is the black coating, the inner wall and the outer wall of the arc-shaped plate are provided with the black coatings and the white coatings with different colors, the purpose of reflecting the pulse signals with different intensities can be achieved, and the accuracy of identifying the rotating state of the sampling output gear 30 is improved.
As shown in fig. 4, according to an embodiment of the present invention, the pulse transmitting part 51 includes an infrared transmitting tube, the pulse receiving part 52 includes an infrared receiving tube, and the infrared signal transmitted by the infrared transmitting tube is reflected to the infrared receiving tube via the signal reflecting part.
According to the utility model discloses an embodiment, infrared emission pipe with the connected mode of infrared receiving tube and main control board 40's IO mouth includes: the collector of the infrared receiving tube is connected to the IO port of the main control board 40 via the first current limiting circuit 210, that is, one end of the first current limiting circuit 210 is connected to the collector of the infrared receiving tube, and the other end is connected to the IO port of the main control board through CTRL 1. The anode of the infrared emission tube is connected with the IO port of the main control board via the second current limiting circuit 220, that is, one end of the second current limiting circuit 220 is connected with the anode of the infrared emission tube, and the other end is connected with the IO port of the main control board through CTRL 2. The emitting electrode of the infrared receiving tube and the cathode of the infrared transmitting tube are both grounded. The collector of the infrared receiving tube is also connected to one end of the first decoupling circuit 230 and an external interrupt port of the main control board, and the other end of the first decoupling circuit 230 is grounded. The first current limiting circuit 210 includes a first resistor, the second current limiting circuit 220 includes a second resistor, and the decoupling circuit 230 includes a first capacitor. The resistors in the current limiting circuits (the first and second current limiting circuits) are used for reducing the current at the load end and preventing the device from being damaged. The capacitor in the decoupling circuit filters the interference signal of the output signal, and reduces the influence of the noise of other elements on the element.
According to the utility model discloses an embodiment, the connected mode of infrared transmitting tube and infrared receiving tube and main control board IO mouth includes: the collector of the infrared receiving tube is connected to the collector of the PNP transistor via the first current limiting circuit 210, that is, one end of the first current limiting circuit 210 is connected to the collector of the infrared receiving tube, and the other end is connected to the collector of the PNP transistor. The anode of the infrared emission tube is connected with the collector of the PNP triode via the second current limiting circuit 220, that is, one end of the second current limiting circuit 220 is connected with the anode of the infrared emission tube, and the other end is connected with the collector of the PNP triode. The emitting electrode of the infrared receiving tube and the cathode of the infrared emitting tube are grounded, the base electrode of the PNP triode is connected with the IO port of the main control board, the emitting electrode of the PNP triode is connected with the power supply, the collecting electrode of the infrared receiving tube is also connected with one end of the decoupling circuit 230 and the external interrupt port of the main control board, and the other end of the decoupling circuit 230 is grounded. Wherein the power supply comprises a 3V power supply.
According to the utility model discloses an embodiment, infrared receiving tube includes the phototriode, and the main control board includes the singlechip.
As shown in fig. 5, in this embodiment, the IO port is used to drive the infrared pair transistors, and the infrared pair transistors are deflated to generate the deflation waveform according to the positions of the infrared pair transistors and the position of the transmission gear on the PCB after being installed in the base table. When the infrared pair tube is aligned to the arc surface of the baffle, the signal intensity is VL, and when the infrared pair tube is aligned to the half surface without the baffle, the signal intensity is VH. And determining whether hardware parameters and structural positions need to be adjusted according to whether VH and VL meet the trigger signal level of external interruption of the single chip microcomputer. Usually, VH is greater than 0.7 times the supply voltage VDD of the one-chip microcomputer, and VL is less than 0.3 times the supply voltage VDD of the one-chip microcomputer. Therefore, it is necessary to ensure that VH and VL both satisfy the condition that VH is greater than 0.7 times of the supply voltage VDD of the single chip microcomputer and VL is less than 0.3 times of the supply voltage VDD of the single chip microcomputer under the limit deviation condition.
In this embodiment, the IO port of the single chip is configured as an external interrupt, and is set to be triggered by a double edge, that is, both a rising edge and a falling edge of a signal can trigger an interrupt. When the interruption of falling edge occurs, recording the current state as A, when the interruption of rising edge occurs, recording the current state as B, generating pulse 1, when the interruption of falling edge occurs again, recording the current state as A, when the interruption of rising edge occurs, recording the current state as B, generating pulse 2, and according to the steps, generating metering pulse.
In the metering process, recording metering interference 1 if two continuous falling edge interruptions or two continuous rising edge interruptions are generated; if the former state is switched from A to B or the time for switching from B to A is less than 1 second, recording the metering interference 2; if the time interval between the generation of pulse 1 and the generation of pulse 2 of the infrared pair is less than 2 seconds, then a metering disturbance 3 is recorded. The metrology disturbances 1, 2 and 3 are all treated as exceptions.
The second aspect of the utility model provides a metering device, metering device include the base table and according to the utility model discloses a metering device's of first aspect sample count subassembly 100, the output gear of base table is connected with sample count subassembly 100's input gear 10, and input gear 10 is connected with the first character wheel (not shown in the figure) of the character wheel group 20 of sample count subassembly 100, and sample count subassembly 100's sample output gear 30 is connected with input gear 10 or first character wheel.
In the present embodiment, when the sampling output gear 30 of the sampling counting assembly 100 is connected to the input gear 10, the input gear 10 includes a first gear portion connected to the first gear of the character wheel set 20 and a second gear portion connected to the sampling output gear 30; when the sampling output gear 30 of the sampling counting assembly 100 is connected with the first gear of the character wheel set 20, the first gear includes a first gear portion connected with the input gear 10 and a second gear portion connected with the sampling output gear 30. The metering device provided by the embodiment of the application has all technical effects of the sampling counting assembly of the first aspect of the application, and is not repeated herein.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a measuring instrument's sample count subassembly, sample count subassembly includes the counter and corresponds the main control board that sets up with the counter, be equipped with input gear, word wheelset and sample output gear on the counter, input gear with the output gear connection of the basic table of measuring instrument, input gear with output gear will flow through the pivoted mode the fluidic flow information transmission of basic table extremely word wheelset with sample output gear, a serial communication port, be provided with the signal reflection part of salient wheel quotation on the rim plate of sample output gear, the main control board with rim plate face parallel arrangement, be provided with on the main control board with the rim plate face staggers and to the signal sensor that signal reflection part extends, signal reflection part set up perpendicularly in on the rim plate, signal sensor to signal reflection part signal emission will the signal transmission that signal reflection part reflects will on the main control board The main control unit of (1).
2. The sampling counting assembly of the metering device of claim 1, wherein the signal reflection portion comprises an arc-shaped plate circumferentially arranged on the wheel disc surface, and during the rotation of the sampling output gear, the outer wall and the inner wall of the arc-shaped plate alternately reflect the signal emitted by the signal sensor.
3. The sampling counting assembly of the metering device of claim 2, wherein the outer wall and the inner wall of the arc-shaped plate are respectively provided with coatings with different colors, and the strength of the reflected signals of the outer wall and the inner wall of the arc-shaped plate received by the signal sensor is different.
4. The sampling counting assembly of claim 1, wherein the generating end of the signal sensor is disposed in parallel with respect to the main control board, and the projection of the signal reflection portion to the direction of the signal sensor is perpendicular to the generating end of the signal sensor.
5. The sampling counting assembly of the metering device of claim 1, wherein the signal sensor comprises a pulse emitting portion and a pulse receiving portion, the pulse emitting portion and the pulse receiving portion are integrally formed, and the pulse signal emitted by the pulse emitting portion is reflected to the pulse receiving portion through the signal reflecting portion.
6. The assembly of claim 5, wherein the pulse emitting portion comprises an infrared emitting tube, and the pulse receiving portion comprises an infrared receiving tube, and the infrared signal emitted from the infrared emitting tube is reflected to the infrared receiving tube by the signal reflecting portion.
7. The sampling counting assembly of claim 6, wherein the connection between the infrared transmitting tube and the infrared receiving tube and the IO port of the main control board comprises:
the collector of the infrared receiving tube is connected with the IO port of the main control board through a first current limiting circuit, the anode of the infrared transmitting tube is connected with the IO port of the main control board through a second current limiting circuit, and the emitter of the infrared receiving tube and the cathode of the infrared transmitting tube are both grounded.
8. The sampling counting assembly of claim 6, wherein the connection between the infrared transmitting tube and the infrared receiving tube and the IO port of the main control board comprises:
the collecting electrode of infrared receiving tube is connected with the collecting electrode of PNP triode via first current-limiting circuit, the positive pole of infrared transmitting tube via second current-limiting circuit with the collecting electrode of PNP triode is connected, the projecting pole of infrared receiving tube with the negative pole of infrared transmitting tube all grounds, the base of PNP triode with the IO mouth of main control board is connected, the projecting pole and the power of PNP triode are connected, the collecting electrode of infrared receiving tube still with decoupling circuit's one end and the external interruption mouth of main control board is connected, decoupling circuit's other end ground connection.
9. The meter sample count assembly of claim 6 wherein said infrared receiving tube comprises a phototransistor.
10. A metering device, characterized in that the metering device comprises a base meter and a sampling counting assembly of the metering device according to any one of claims 1 to 9, an output gear of the base meter is connected with an input gear of the sampling counting assembly, the input gear is connected with a first character wheel of a character wheel set of the sampling counting assembly, and a sampling output gear of the sampling counting assembly is connected with the input gear or the first character wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021921871.4U CN212963522U (en) | 2020-09-04 | 2020-09-04 | Sampling counting assembly of metering device and metering device with sampling counting assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021921871.4U CN212963522U (en) | 2020-09-04 | 2020-09-04 | Sampling counting assembly of metering device and metering device with sampling counting assembly |
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| CN212963522U true CN212963522U (en) | 2021-04-13 |
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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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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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