CN207963984U - A kind of anti-interference pulsed gas meter counting detection device - Google Patents
A kind of anti-interference pulsed gas meter counting detection device Download PDFInfo
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- CN207963984U CN207963984U CN201721813094.XU CN201721813094U CN207963984U CN 207963984 U CN207963984 U CN 207963984U CN 201721813094 U CN201721813094 U CN 201721813094U CN 207963984 U CN207963984 U CN 207963984U
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- gas meter
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- detection device
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Abstract
The utility model discloses a kind of anti-interference pulsed gas meter counting detection device, including a LED light tube, and two phototransistors are pasted on the reflecting piece of gas meter, flow meter mechanical counter transmission parts, pulsed drive and detection circuit.The LED light tube is driven by pulse driving circuit, emits pulsed light, and irradiation is stained with the transmission parts of reflecting piece；Two phototransistors are installed near LED pipe, receive the LED light of reflecting piece reflection, and the light intensity signal of reception is related to the position of reflecting piece, and two phototransistors output corresponding signal is detected by pulsed drive and detection circuit.Counter rotation direction and state are can determine whether according to the output signal logic of two electro optical transistors, and the critical flutter and ambient light interference to counter have very strong anti-interference ability.It is provided simultaneously with low-power consumption, self-test, environment self-adaption ability.The utility model technology belongs to gas meter, flow meter sensor field.
Description
Technical field
The utility model belongs to gas meter, flow meter sensory field more particularly to gas meter counting reading device.
Background technology
Currently, gas meter, flow meter remote automatic meter reading structure mainly has counter and direct-reading two ways.Direct-reading is to pass through
The mode for directly reading gas meter, flow meter character wheel numerical value carries out meter reading, and meter reading, power supply requirement are only powered on when needing meter reading
Fairly simple but its reading device is complicated, and cost is higher.Counter structure places magnet steel or reflectance coating on a gear,
Pulse signal when gear one circle of rotation is generated with a magneto sensor or optoelectronic switch, is copied by counting umber of pulse to realize
Table, this mode cost simple in structure is extremely low, but power requirement is relatively high, and is easy to be shaken by boundary, external magnetic field
（Or light）Interference, especially most common magnetic counting device is very weak to the interference attack resistivity of malice in the market.It is many
Producer is still difficult to cope with targetedly magnetic interference and multiple channel radios by adding the method for additional magneto-dependent sensor
Letter equipment causes the interference that electromagnetic field fluctuation generates.And existing optoelectronic switch structure is in addition to being easily disturbed, also because power consumption is larger, often
Rule gas meter, flow meter is difficult to realize be changed without continue working in gas meter, flow meter lifetime with battery.
Invention content
The purpose of this utility model is to realize that one kind simple in structure, inexpensive, strong antijamming capability, lifetime interior energy are realized
The low-power consumption gas meter counting detection device of battary without change.
To achieve the goals above, the utility model uses following technical scheme：
A kind of anti-interference pulsed gas meter counting detection device, including a LED light tube, two identical photoelectricity are brilliant
Body pipe is pasted on the reflecting piece and pulsed drive and detection circuit of gas meter, flow meter mechanical counter transmission parts.Two phototransistors
With near LED light tube, face is stained with the gas meter mechanical counter transmission parts of reflecting piece for installation.
The LED light tube is driven by pulsed drive and detection circuit, and transmitting width is the pulsed light of Microsecond grade, pulse
Reflecting piece rotation period setting when interval time is according to gas meter, flow meter maximum stream flow can be set as hundreds of milliseconds to second grade.
LED light tube irradiates the transmission parts for being stained with reflecting piece, and when reflecting piece face LED light tube, reflected light enters
The light intensity for being mapped to two phototransistors is close, and output is all strong signal；Reflecting piece rotates a circle, and two phototransistors can
Two strong signals, power, complete weak and weak strong four kinds of logic states are sent out successively, and pulsed drive and detection circuit are detected two crystalline substances
The logic state of body output judges that the judgement of situation is shaken on counter rotation direction, number of turns measurement and boundary according to state,
Realize correct count detection.
The utility model has the advantages that：It is insensitive to the variation of electromagnetic field, it is not influenced by magnetic attack；Utilize two photoelectricity crystalline substances
The output logic of body pipe detects reflecting piece turnning circle, has very strong anti-interference ability to boundary shake and ambient light；And
And overall power is not only greatly reduced using pulsed drive and detection mode, but also the photoelectricity in the pulse spacing can be passed through
Transistor output during the output of transistor shines to LED is modified, to realize anti-light interfere and to environmental parameter
Adaptation function, also can according to logic state change, weak signal levels realize error condition detection, oneself state detection.
Description of the drawings
Fig. 1 is a kind of principle schematic diagram of the utility model.
Fig. 2 is a kind of use state principle schematic diagram of the utility model.
Label in attached drawing：1-LED luminous tubes, 2- phototransistors, 3- reflecting pieces, 4- punchings driving and detection circuit, 5-
Gas meter, flow meter mechanical counter last position character wheel, the reflecting piece of inspection table on 6- gas meter counter last position character wheels.
Specific implementation mode
With reference to the attached drawing in the utility model, technical solution of this reality in novel is carried out further specifically
It is bright.
Referring to Fig. 1 and Fig. 2, the anti-interference pulsed gas meter counting detection device, as shown in Fig. 2, red including one
Two patch infrared receiver triodes of weldering are pasted in outer patch LED pipe, both sides respectively, and three transistors, which arrange to weld successively, is affixed on pcb board
Front.PCB reverse side patch weldering low-power scm, microcontroller output pulse signal driving infrared LED shine and detect infrared receiver
Triode exports.Entire pcb board is installed below gas meter, flow meter character wheel frame, the last position character wheel of infrared LED pipe face gas meter, flow meter
（5）, reflecting piece directly utilize the character wheel on existing inspection table reflecting piece（6）.
Microcontroller continuously exports the 10 microsecond pulse signals in appropriate period according to the flow range of gas meter, flow meter, to dynamic infrared
LED emits short pulse signal, and microcontroller is detected the output voltage of two infrared receiver triodes during LED shines,
Obtain its output level logic.Character wheel turns around, and two reception triodes are sequentially output level logic and are：00、01、11、10、
00；The number of turns of last position character wheel rotation, the obtained number of turns divided by 1 cubic metre of flow can be correctly counted out according to output logic sequence
The number of turns that last position needs rotate can obtain the flow number of gas meter counting.In the phase in pulse spacing, microcontroller and circuit enter
Suspend mode is to reduce power consumption.
Claims (6)
1. a kind of anti-interference pulsed gas meter counting detection device, it is characterised in that：Including LED light tube（1）, two photoelectricity
Transistor（2）, be pasted on the reflecting pieces of gas meter, flow meter mechanical counter transmission parts（3）, pulsed drive and detection circuit（4）；Institute
The LED light tube stated（1）By pulsed drive and detection circuit（4）Driving, sends out pulsed light, through reflecting piece（3）It is irradiated after reflection
To being installed on LED light tube（1）Two neighbouring phototransistors（2）On photosurface；Two transistors（2）The light intensity received
With reflecting piece（3）Different location correlation is turned to gas meter, flow meter mechanical counter transmission parts, passes through pulsed drive and detection electricity
Road（4）The output signal logic of two phototransistors of detection measures gas meter counter rotation direction and turnning circle.
2. a kind of anti-interference pulsed gas meter counting detection device according to claim 1, it is characterised in that：Described
Two phototransistors（2）It can immediately be installed together and LED light tube（1）Chinese character pin-shaped distribution is constituted, or is installed respectively
In LED light tube（2）Both sides.
3. a kind of anti-interference pulsed gas meter counting detection device according to claim 1, it is characterised in that：Two light
Electric transistor（2）Can be photodiode, phototriode or LED light emitting diodes.
4. a kind of anti-interference pulsed gas meter counting detection device according to claim 1, it is characterised in that：LED is sent out
Light pipe can be infrared LED luminous tube or visible LED luminous tube.
5. a kind of anti-interference pulsed gas meter counting detection device according to claim 1, it is characterised in that：Reflecting piece
（3）It can be pasted in gas meter, flow meter character wheel, transmission gear or additional gear mechanism.
6. a kind of anti-interference pulsed gas meter counting detection device according to claim 1, it is characterised in that：Pulse is driven
Dynamic and detection circuit（4）Can be specialized simulation digital integration chip, microcontroller or FPGA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721813094.XU CN207963984U (en) | 2017-12-22 | 2017-12-22 | A kind of anti-interference pulsed gas meter counting detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721813094.XU CN207963984U (en) | 2017-12-22 | 2017-12-22 | A kind of anti-interference pulsed gas meter counting detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207963984U true CN207963984U (en) | 2018-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721813094.XU Expired - Fee Related CN207963984U (en) | 2017-12-22 | 2017-12-22 | A kind of anti-interference pulsed gas meter counting detection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN207963984U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109883500A (en) * | 2019-04-01 | 2019-06-14 | 上海飞奥燃气设备有限公司 | The anti-interference metering system of intelligent gas meter |
| CN113884154A (en) * | 2020-07-03 | 2022-01-04 | 成都秦川物联网科技股份有限公司 | MCU-based double-path photoelectric sampling method for Internet of things intelligent gas meter |
| CN114088154A (en) * | 2020-07-03 | 2022-02-25 | 成都秦川物联网科技股份有限公司 | Photoelectric encoder for intelligent gas meter of Internet of things |
-
2017
- 2017-12-22 CN CN201721813094.XU patent/CN207963984U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109883500A (en) * | 2019-04-01 | 2019-06-14 | 上海飞奥燃气设备有限公司 | The anti-interference metering system of intelligent gas meter |
| CN113884154A (en) * | 2020-07-03 | 2022-01-04 | 成都秦川物联网科技股份有限公司 | MCU-based double-path photoelectric sampling method for Internet of things intelligent gas meter |
| CN114088154A (en) * | 2020-07-03 | 2022-02-25 | 成都秦川物联网科技股份有限公司 | Photoelectric encoder for intelligent gas meter of Internet of things |
| CN114088154B (en) * | 2020-07-03 | 2023-05-26 | 成都秦川物联网科技股份有限公司 | Photoelectric encoder for intelligent gas meter of Internet of things |
| CN113884154B (en) * | 2020-07-03 | 2023-10-31 | 成都秦川物联网科技股份有限公司 | MCU-based double-path photoelectric sampling method for intelligent gas meter of Internet of things |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181012 Termination date: 20201222 |