CN113890511A - Low-power-consumption photoelectric switch sensor for Internet-of-things intelligent gas meter - Google Patents
Low-power-consumption photoelectric switch sensor for Internet-of-things intelligent gas meter Download PDFInfo
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- CN113890511A CN113890511A CN202010637006.5A CN202010637006A CN113890511A CN 113890511 A CN113890511 A CN 113890511A CN 202010637006 A CN202010637006 A CN 202010637006A CN 113890511 A CN113890511 A CN 113890511A
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- 238000004806 packaging method and process Methods 0.000 claims description 17
- 239000000758 substrate Substances 0.000 claims description 11
- 230000003287 optical effect Effects 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 2
- 230000006855 networking Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 14
- 238000005070 sampling Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 235000014676 Phragmites communis Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/01—Details
- H03K3/012—Modifications of generator to improve response time or to decrease power consumption
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
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Abstract
The application relates to the technical field of intelligent gas meters of the Internet of things and discloses a low-power consumption photoelectric switch sensor for the intelligent gas meters of the Internet of things. This application has realized the holistic miniaturization of device, and overall structure integrates the degree height, convenient to use to through narrow pulse drive technique, realized the low-power consumption effect of device, the daily use of satisfying the gas table that can be fine.
Description
Technical Field
The application relates to the technical field of intelligent gas meters of the Internet of things, in particular to a low-power-consumption photoelectric switch sensor for an intelligent gas meter of the Internet of things.
Background
Along with the improvement of the informatization, intellectualization and scientific and technological level of China, the application of the intelligent metering technology in the gas meter is more and more extensive, and along with the continuous development and progress of the society, the status and the role of the use of natural gas in the development of the modern society and the life of residents are more and more important; along with the large-scale popularization and application of urban pipelines, the application of gas meters also deepens into thousands of households, and along with the expansion of urban scales, the application of the technology of the internet of things in intelligent gas meters is more and more along with the gradual development of intelligent cloud services, the industry of the internet of things and the technology aiming at the requirements of gas companies on gas meter monitoring and gas consumption large data analysis.
In the field of civil gas meters, sampling and counting of the gas meters are mainly performed by reed pipes and Hall switches at present. The reed switch and the Hall are magnetic elements, the situation of measurement failure is easy to occur under the situation of external strong magnetic field interference, and the problem that the magnetic elements are easy to be interfered by the external strong magnetic field can be effectively solved by adopting the photoelectric encoder.
Further, when the photoelectric coding technology is adopted for sampling, the main components are a light emitting diode and a photosensitive diode, and corresponding driving circuits of the light emitting diode and the photosensitive diode. The optoelectronic component assembly may employ a discrete component or an encapsulated optoelectronic switch assembly. At present, inside only encapsulation a emitting diode and the photosensitive diode of photoelectric switch subassembly, the inside two units that belong to logically independent of current photoelectric switch in essence, overall structure is complicated, and the volume is great, integrates the degree low, and the consumption is high, is unfavorable for the miniaturization to it is also convenient inadequately to use.
Disclosure of Invention
In order to overcome the problems and the defects existing in the prior art, the photoelectric switch sensor applicable to the intelligent gas meter of the internet of things is high in integration degree, small in whole volume and capable of achieving low power consumption.
In order to achieve the above object, the technical solution of the present application is as follows:
the utility model provides a low-power consumption photoelectric switch sensor for thing networking intelligent gas table which characterized in that: the LED packaging structure comprises a packaging shell with a U-shaped structure, wherein a light emitting diode, a photosensitive diode, a substrate and a low-power-consumption driving circuit are integrated in the packaging shell, sealing glue is filled in the U-shaped packaging shell, light holes and photosensitive holes are respectively formed in the end faces opposite to the two side ends of the U-shaped packaging shell, the light emitting diode and the photosensitive diode are respectively arranged at the positions of the light holes and the photosensitive holes and are respectively connected with the substrate through internal leads, the substrate is connected with the outside through outgoing lines, and the low-power-consumption driving circuit is integrated on the substrate and comprises a clock generating circuit, a narrow pulse generating circuit, an optical signal driving and receiving circuit, a latching signal generating circuit and a holding circuit;
the clock generation circuit comprises a clock signal clock;
the narrow pulse generating circuit comprises an AND gate and N D triggers A, wherein a first output end Q of each D trigger A is sequentially connected with a clock input end CK of the next D trigger A, and output ends Q of the second to N D triggers A are connected with input ends of the AND gate;
the optical signal driving and receiving circuit comprises a light emitting diode driving signal output LED and a photosensitive diode signal input PD;
the latch signal generating circuit comprises a NAND gate;
the holding circuit comprises a D flip-flop B;
the clock signal clock is connected with a clock input end CK of a first D trigger A, an output end Q of the first D trigger A is connected with one input end of a NAND gate, output ends Q of second to N D triggers A are connected with the other input end of the NAND gate, the output end of the NAND gate is connected with the clock input end CK of a D trigger B, an input end D of the D trigger B is connected with a photosensitive diode signal input PD, the output end of the AND gate is connected with a light emitting diode driving signal output LED, and the output end Q of the D trigger B is connected with a signal output end OUT.
Preferably, N is the duty ratio value N0-N13 of the narrow pulse generation circuit.
Preferably, the output Qn of the D flip-flop a is connected to its own input D.
Preferably, the clock generating circuit, the narrow pulse generating circuit, the optical signal driving and receiving circuit, the latch signal generating circuit and the holding circuit form a packaging circuit, the packaging circuit has five pins, and the five pins are respectively a light emitting diode driving signal output LED, a photodiode signal input PD, a ground GND, a power supply VCC and an output OUT terminal.
The beneficial effect of this application:
(1) this application is with parts such as emitting diode, photosensitive diode and low-power consumption drive circuit whole integration in packaging shell, consequently, has realized the holistic miniaturization of device, and overall structure integrates the degree height, and it is more convenient to use.
(2) The D trigger in the narrow pulse generating circuit is composed of a twelve digit binary pulse counter, wherein the output of the binary counter is N0-N13 with fourteen digits, the output N1-N13 is subjected to logical AND operation to obtain narrow pulse output, and the pulse width is 2 multiplied by TclkPulse period of 214×TclkWhen the duty ratio of the driving pulse is slightly 0.01%, the average current of the driving circuit is extremely small and is superior to dry spring sampling, the driving current required by the light emitting diode LED is small, and the output frequency of narrow pulse
Drawings
The foregoing and following detailed description of the present application will become more apparent when read in conjunction with the following drawings, wherein:
fig. 1 is a schematic perspective view of a low power consumption photoelectric switch sensor according to the present application;
FIG. 2 is a schematic diagram of an internal structure of a low power consumption photoelectric switch sensor according to the present application;
FIG. 3 is a schematic diagram of the low power driving circuit connection according to the present application;
fig. 4 is a schematic diagram of a package circuit structure according to the present application.
In the figure:
1. a package housing; 2. a light emitting diode; 3. a photodiode; 4. a substrate; 5. a low power consumption drive circuit; 6. a light-transmitting hole; 7. a photosensitive hole; 8. an inner lead; 9. an outgoing line; 101. a clock generation circuit; 102. a narrow pulse generating circuit; 103. an optical signal driving and receiving circuit; 104. a latch signal generating circuit; 105. a holding circuit; 107. a clock; 108. an AND gate; 109. d, triggering a trigger A; 110. a NAND gate; 111. d flip-flop B.
Detailed Description
The technical solutions for achieving the objects of the present invention are further described below by using several specific examples, and it should be noted that the technical solutions claimed in the present application include, but are not limited to, the following examples.
Example 1
The embodiment discloses a low-power consumption photoelectric switch sensor for an internet of things intelligent gas meter, which is shown in the attached figures 1-3 of the specification, and comprises a packaging shell 1 in a U-shaped structure, a light-emitting diode 2, a photosensitive diode 3, a base 4 and a low-power consumption driving circuit 5, wherein the light-emitting diode 2, the photosensitive diode 3, the base plate 4 and the low-power consumption driving circuit 5 are all integrated in the packaging shell 1, the packaging shell 1 is filled with sealing glue, furthermore, the opposite end surfaces of the two side ends of the packaging shell 1 are respectively provided with a light-transmitting hole 6 and a photosensitive hole 7, the light-emitting diode 2 and the photosensitive diode 3 are respectively arranged at the positions of the light-transmitting hole 6 and the photosensitive hole 7, infrared light emitted by the light-emitting diode 2 is emitted through the light-transmitting hole 6 and is received by the photosensitive diode 3 after being emitted into the photosensitive hole 7, the light-emitting diode 2 and the photosensitive diode 3 are respectively connected with the base plate 4 through internal leads 8, the substrate 4 is connected with the outside through the outgoing line 9, and the low-power-consumption driving circuit 5 is integrated on the substrate 4 and specifically comprises a clock generating circuit 101, a narrow pulse generating circuit 102, an optical signal driving and receiving circuit 103, a latch signal generating circuit 104 and a holding circuit 105;
the clock generation circuit 101 includes a clock signal clock 107;
the narrow pulse generating circuit 102 comprises an and gate 108 and N D flip-flops a109, wherein a first output end Q of each D flip-flop a109 is sequentially connected with a clock input end CK of the next D flip-flop a109, and output ends Q of the second to N D flip-flops a109 are all connected with an input end of the and gate 108;
the optical signal driving and receiving circuit 103 comprises a light emitting diode driving signal output LED and a photosensitive diode signal input PD, the light emitting diode 2 is connected with the light emitting diode driving signal output LED, and the photosensitive diode 3 is connected with the photosensitive diode signal input PD;
the latch signal generating circuit 104 includes a nand gate 110;
the holding circuit 105 includes a D flip-flop B111;
the clock signal clock107 is connected to a clock input terminal CK of a first D flip-flop a109, an output terminal Q of the first D flip-flop a109 is connected to one input terminal of the nand gate 110, output terminals Q of second to N D flip-flops a109 are connected to another input terminal of the nand gate 110, an output terminal of the nand gate 110 is connected to the clock input terminal CK of a D flip-flop B111, an input terminal D of the D flip-flop B111 is connected to the photodiode signal input PD, an output terminal of the and gate 108 is connected to the LED for outputting a light emitting diode driving signal, and an output terminal Q of the D flip-flop B111 is connected to a signal output terminal OUT.
Preferably, N is the duty cycle value N0-N13 of the narrow pulse generating circuit 102.
Preferably, the output Qn of the D flip-flop a109 is connected to its own input D.
Preferably, referring to fig. 4 of the specification, the clock generating circuit 101, the narrow pulse generating circuit 102, the optical signal driving and receiving circuit 103, the latch signal generating circuit 104 and the holding circuit 105 form a packaged circuit, and the packaged circuit has five pins, which are the LED driving signal output LED, the photodiode signal input PD, the ground GND, the power VCC and the output OUT terminal, respectively.
In the present application, a clock signal clock in a clock generation circuit is a clock signal generation unit, and the RC multivibrator principle is adopted.
By means of D flip-flop in narrow pulse generator circuit, the binary pulse counter group with fourteen bitsThe output of the binary counter is fourteen bits N0-N13, and the outputs N1-N13 are logically AND-ed to obtain narrow pulse output with pulse width of 2 XTclkPulse period of 214×TclkWhen the duty ratio of the driving pulse is slightly 0.01%, the average current of the driving circuit is extremely small, and is superior to reed pipe sampling.
The optical signal driving and receiving circuit is an amplifying circuit for outputting LED driving signals and inputting PD photosensitive diode signals.
The latch signal generating circuit is a sample-and-hold circuit latch signal obtained by NAND-operating the output (N0-N13) of the binary counter, and the clock of the output latch circuit is delayed by one clock period T from the pulse of the LED drive signalclk。
When the holding circuit is used for keeping the LED light source effective, the received signal of the photosensitive diode is held to the next sampling moment.
In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present application and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the present application.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The foregoing is directed to embodiments of the present invention, which are not limited thereto, and any simple modifications and equivalents thereof according to the technical spirit of the present invention may be made within the scope of the present invention.
Claims (4)
1. The utility model provides a low-power consumption photoelectric switch sensor for thing networking intelligent gas table which characterized in that: comprises a packaging shell (1) with a U-shaped structure, wherein a light-emitting diode (2), a photosensitive diode (3), a substrate (4) and a low-power consumption driving circuit (5) are integrated in the packaging shell (1), sealing glue is filled in the U-shaped packaging shell (1), the opposite end surfaces of the two side ends are respectively provided with a light hole (6) and a light sensitive hole (7), the light emitting diode (2) and the light sensitive diode (3) are respectively arranged at the positions of the light hole (6) and the light sensitive hole (7), and are connected to the substrate (4) through inner leads (8), respectively, the substrate (4) is connected to the outside through lead wires (9), the low-power-consumption driving circuit (5) is integrated on the substrate (4) and comprises a clock generating circuit (101), a narrow pulse generating circuit (102), an optical signal driving and receiving circuit (103), a latch signal generating circuit (104) and a holding circuit (105);
the clock generation circuit (101) comprises a clock signal clock (107);
the narrow pulse generating circuit (102) comprises an AND gate (108) and N D triggers A (109), wherein a first output end Q of each D trigger A (109) is sequentially connected with a clock input end CK of the next D trigger A (109), and output ends Q of the second to N D triggers A (109) are connected with the input end of the AND gate (108);
the optical signal driving and receiving circuit (103) comprises a light emitting diode driving signal output LED and a photosensitive diode signal input PD;
the latch signal generation circuit (104) comprises a NAND gate (110);
the holding circuit (105) comprises a D flip-flop B (111);
the clock signal clock (107) is connected with a clock input end CK of a first D flip-flop A (109), an output end Q of the first D flip-flop A (109) is connected with one input end of a NAND gate (110), output ends Q of second to N D flip-flops A (109) are connected with the other input end of the NAND gate (110), an output end of the NAND gate (110) is connected with the clock input end CK of a D flip-flop B (111), an input end D of the D flip-flop B (111) is connected with a photosensitive diode signal input PD, an output end of the AND gate (108) is connected with a light emitting diode driving signal output LED, and an output end Q of the D flip-flop B (111) is connected with a signal output end OUT.
2. The low-power consumption photoelectric switch sensor for the intelligent gas meter of the internet of things according to claim 1, wherein: the N is a duty cycle value N0-N13 of the narrow pulse generating circuit (102).
3. The low-power consumption photoelectric switch sensor for the intelligent gas meter of the internet of things according to claim 1, wherein: the output end Qn of the D trigger A (109) is connected with the input end D of the D trigger A.
4. The low-power consumption photoelectric switch sensor for the intelligent gas meter of the internet of things according to claim 1, wherein: clock generation circuit (101), narrow pulse generating circuit (102), light signal drive and light signal receiving circuit (103), latch signal generating circuit (104) and holding circuit (105) form a packaging circuit, packaging circuit has five pins, five pins are emitting diode drive signal output LED, photosensitive diode signal input PD, ground connection GND, power VCC and output OUT end respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010637006.5A CN113890511A (en) | 2020-07-03 | 2020-07-03 | Low-power-consumption photoelectric switch sensor for Internet-of-things intelligent gas meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010637006.5A CN113890511A (en) | 2020-07-03 | 2020-07-03 | Low-power-consumption photoelectric switch sensor for Internet-of-things intelligent gas meter |
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| Publication Number | Publication Date |
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| CN113890511A true CN113890511A (en) | 2022-01-04 |
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| CN202010637006.5A Withdrawn CN113890511A (en) | 2020-07-03 | 2020-07-03 | Low-power-consumption photoelectric switch sensor for Internet-of-things intelligent gas meter |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4741000A (en) * | 1985-06-26 | 1988-04-26 | Keyence Co., Ltd. | Photoelectronic switch |
| JPH0575420A (en) * | 1991-09-11 | 1993-03-26 | Omron Corp | Photoelectric switch |
| JP2002368595A (en) * | 2001-03-15 | 2002-12-20 | Omron Corp | Radiation pulse interposed sensor |
| US20030127586A1 (en) * | 2001-12-14 | 2003-07-10 | Yasuhiro Maruyama | Photo-detecting method and photo-detecting device |
| US20070098409A1 (en) * | 2005-11-01 | 2007-05-03 | Sharp Kabushiki Kaisha | Pulse modulating photodetector and electronic device |
| CN208071038U (en) * | 2018-02-08 | 2018-11-09 | 江西亿施客传感器有限公司 | Elevator flat bed limit photoelectric switch with anti-interference function |
| CN210242887U (en) * | 2019-08-21 | 2020-04-03 | 佛山市梦宸电子智能科技有限公司 | Device for converting flow signal of front guard clomm membrane type gas meter into pulse signal |
-
2020
- 2020-07-03 CN CN202010637006.5A patent/CN113890511A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4741000A (en) * | 1985-06-26 | 1988-04-26 | Keyence Co., Ltd. | Photoelectronic switch |
| JPH0575420A (en) * | 1991-09-11 | 1993-03-26 | Omron Corp | Photoelectric switch |
| JP2002368595A (en) * | 2001-03-15 | 2002-12-20 | Omron Corp | Radiation pulse interposed sensor |
| US20030127586A1 (en) * | 2001-12-14 | 2003-07-10 | Yasuhiro Maruyama | Photo-detecting method and photo-detecting device |
| US20070098409A1 (en) * | 2005-11-01 | 2007-05-03 | Sharp Kabushiki Kaisha | Pulse modulating photodetector and electronic device |
| CN208071038U (en) * | 2018-02-08 | 2018-11-09 | 江西亿施客传感器有限公司 | Elevator flat bed limit photoelectric switch with anti-interference function |
| CN210242887U (en) * | 2019-08-21 | 2020-04-03 | 佛山市梦宸电子智能科技有限公司 | Device for converting flow signal of front guard clomm membrane type gas meter into pulse signal |
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