CN109323734A - A kind of flowmeter flow sensing circuit and metering abnormality eliminating method - Google Patents
A kind of flowmeter flow sensing circuit and metering abnormality eliminating method Download PDFInfo
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- CN109323734A CN109323734A CN201811390098.0A CN201811390098A CN109323734A CN 109323734 A CN109323734 A CN 109323734A CN 201811390098 A CN201811390098 A CN 201811390098A CN 109323734 A CN109323734 A CN 109323734A
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- flow
- magnetic induction
- induction sensor
- pin
- connector
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Classifications
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- 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
- G01F15/02—Compensating or correcting for variations in pressure, density or temperature
- G01F15/04—Compensating or correcting for variations in pressure, density or temperature of gases to be measured
-
- 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
- G01F15/07—Integration to give total flow, e.g. using mechanically-operated integrating mechanism
- G01F15/075—Integration to give total flow, e.g. using mechanically-operated integrating mechanism using electrically-operated integrating means
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The present invention relates to a kind of flowmeter flow sensing circuit and metering abnormality eliminating methods, and flow sensing circuit includes the connector P1 of gage probe U1, the first magnetic induction sensor U2 and Header4 type；The VCC pin of gage probe U1 connects power supply, GND pin ground connection, and OUT pin is connect with the terminal 2 of connector P1；The VCC pin of first magnetic induction sensor U2 connects power supply, GND pin ground connection, and OUT pin is connect with the terminal 1 of connector P1, and the terminal 3 of connector P1 is grounded, and the terminal 4 of connector P1 connects power supply；Gage probe U1 is used for detection gas flow, and the first magnetic induction sensor U2 is used for detection magnetic interference signal, and the microprocessor connection of connector P1 and gas flowmeter have the advantages that of simple structure and low cost, sensitive；Metering abnormality eliminating method has the advantages that process is simple, realizes that easy, execution efficiency is high solve the problems, such as gas flowmeter because can not normally be measured by magnetic disturbance, the anti-theft gaseous for improving gas flowmeter is horizontal.
Description
Technical field
The present invention relates to a kind of gas flowmeters, and in particular to a kind of flow sensing circuit of gas flowmeter and metering
Abnormal processing method.
Background technique
With the development of economy and society, natural gas is more and more wider as a kind of its application field of clear energy sources, consumption figure
Rapid development.Gas flowmeter is the common measuring equipment of gas distributing system, as both sides of supply and demand measure tolerance and valuation according to
According to the accuracy of metering directly affects the fairness of transaction.Gas flowmeter is by base table, mechanical counter and volume correction instrument
It forms, the flow sensing circuit being arranged in the temperature sensor and pressure sensor and mechanical counter being arranged in base table (is set
Have gage probe) it is connect respectively with the microprocessor being arranged in volume correction instrument, it is detected by volume correction instrument according to base table
Gas flow operating condition volume is converted to gas flow mark by the flow signal of temperature signal, pressure signal and mechanical counter detection
Condition volume, in order to valuate.Temperature signal, pressure signal and flow signal are the call parameters that gas mark condition volume calculates.It is existing
There is the gage probe (Hall sensor) of its flow sensing circuit of gas flowmeter to be highly susceptible to the influence in interference magnetic field, nothing
Method normally provides flow signal to microprocessor.It is based on this feature, when some criminals is interfered frequently with kicker magnet
The gage probe of flow sensing circuit steals gas purpose to realize, not only causes certain warp to natural gas management unit
Ji loss, and affect economic order and industry development.
Summary of the invention
The object of the present invention is to provide a kind of flowmeter flow sensing circuit and metering abnormality eliminating method, flow detection electricity
Road has the advantages that of simple structure and low cost, sensitive, practical；Processing method is simple with process, realizes and holds
Easily, the high advantage of execution efficiency solves the problems, such as gas flowmeter because can not normally be measured by magnetic disturbance, improves gas stream
The anti-theft gaseous level and stability of meter.
To solve the above-mentioned problems in the prior art, a kind of flowmeter flow sensing circuit provided by the invention, packet
Include the connector P1 of gage probe U1, the first magnetic induction sensor U2 and Header4 type；The VCC pin of gage probe U1
Power supply, the GND pin ground connection of gage probe U1 are connect, the OUT pin of gage probe U1 is connect with the terminal 2 of connector P1；
The VCC pin of first magnetic induction sensor U2 connects power supply, the GND pin ground connection of the first magnetic induction sensor U2, the first magnetic induction
The OUT pin of sensor U2 is connect with the terminal 1 of connector P1, and the terminal 3 of connector P1 is grounded, and the terminal 4 of connector P1 connects
Power supply；Gage probe U1 and the first magnetic induction sensor U2 is Hall sensor, and gage probe U1 is used for detection gas
Flow, the first magnetic induction sensor U2 are used for detection magnetic interference signal, the microprocessor connection of connector P1 and gas flowmeter.
Further, a kind of flowmeter flow sensing circuit of the present invention, further include the second magnetic induction sensor U3 and with it is non-
Door chip U4；The A pin of NAND gate chip U4 is connect with the OUT pin of the second magnetic induction sensor U3, NAND gate chip U4's
B pin is connect with the OUT pin of the first magnetic induction sensor U2, the GND pin ground connection of NAND gate chip U4, NAND gate chip U4
VCC pin connect power supply, the Y pin of NAND gate chip U4 is connect with the terminal 1 of connector P1；Second magnetic induction sensor U3's
VCC pin connects power supply, the GND pin ground connection of the second magnetic induction sensor U3；Second magnetic induction sensor U3 is Hall sensor.
Further, a kind of flowmeter flow sensing circuit of the present invention, wherein the first magnetic induction sensor U2 and the
Two magnetic induction sensor U3 are correspondingly arranged at the two sides of gage probe U1.
A kind of gas flowmeter provided by the invention measures abnormality eliminating method, wherein the gas flowmeter includes upper
The flow sensing circuit stated, the metering abnormality eliminating method the following steps are included:
One, it allows gage probe U1 real-time detection gas flow, as flow detection value, and calculates and storage flow detection
The daily mean of value；
Two, the first magnetic induction sensor U2 and the second magnetic induction sensor U3 real-time detection is allowed to believe with the presence or absence of magnetic disturbance
Number；
Three, when magnetic disturbance signal is not detected in the first magnetic induction sensor U2 and the second magnetic induction sensor U3, with stream
Flow parameter of the detection values as gas flow mark condition volume operation；Otherwise, step 4 is carried out；
Four, to set the mean value that the time limit calculates flow detection average value on duty for the day, as flow analysis value, by flow analysis value
Compared with flow detection value, when flow detection value is greater than or equal to flow analysis value, using flow detection value as gas flow
Mark the flow parameter of condition volume operation；Otherwise, step 5 is carried out；
Five, compare flow analysis value and flow preset value, when flow analysis value is greater than or equal to flow preset value, with stream
Measure flow parameter of the assay value as gas flow mark condition volume operation；Otherwise, using flow preset value as gas flow mark condition
The flow parameter of volume operation；
The setting time limit is arranged according to the user type and applying working condition of gas flowmeter, the flow preset value
It is that gas flowmeter is preset when leaving the factory.
Further, a kind of gas flowmeter of the present invention measures abnormality eliminating method, wherein in above-mentioned steps four, institute
It states and sets the time limit as 60~90 days.
A kind of flowmeter flow sensing circuit of the present invention and metering abnormality eliminating method compared with prior art, have following
Advantage: the present invention passes through setting gage probe U1, the connector P1 of the first magnetic induction sensor U2 and Header4 type；Allow meter
The VCC pin of quantity sensor U1 connects power supply, allows the GND pin of gage probe U1 to be grounded, and make the OUT of gage probe U1
Pin is connect with the terminal 2 of connector P1；It allows the VCC pin of the first magnetic induction sensor U2 to connect power supply, the first magnetic induction is allowed to pass
The GND pin of sensor U2 is grounded, and connect the OUT pin of the first magnetic induction sensor U2 with the terminal 1 of connector P1, and allow
The terminal 3 of connector P1 is grounded, and the terminal 4 of connector P1 is allowed to connect power supply；Wherein, gage probe U1 and the first magnetic strength inductive sensing
Device U2 is Hall sensor, and gage probe U1 is used for detection gas flow, and the first magnetic induction sensor U2 is used for detection magnetic
The microprocessor of interference signal, connector P1 and gas flowmeter connects.Thus it is simple, at low cost just to constitute a kind of structure
Honest and clean, sensitive, practical flowmeter flow sensing circuit.In practical applications, gage probe U1 real-time detection gas
Body flow, when there are magnetic disturbance signal, gage probe U1 and the first magnetic induction sensor U2 can be affected simultaneously, pass through
First magnetic induction sensor U2 trigger signal simultaneously sends microprocessor to, and microprocessor using gas flow substitution value is allowed to replace gas
Body flow detection value carries out gas flow mark condition volume and calculates, and can effectively avoid gas flowmeter can not because being disturbed magnetic field influence
The problem of normal metering.A kind of gas flowmeter metering abnormality eliminating method provided by the invention is simple with process, realizes and holds
Easily, the high advantage of execution efficiency, diamagnetic ability and the anti-theft gaseous for improving gas flowmeter are horizontal.
Shown specific embodiment is abnormal to a kind of flowmeter flow sensing circuit of the present invention and metering with reference to the accompanying drawing
Processing method is described in further detail:
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of flowmeter flow sensing circuit of the present invention；
Fig. 2 is the flow chart that a kind of gas flowmeter of the present invention measures abnormality eliminating method.
Specific embodiment
Firstly the need of explanation, the nouns of locality such as heretofore described upper and lower, front, rear, left and right only with reference to the accompanying drawings into
Capable description, in order to understand, not to technical solution of the present invention and be claimed range progress limitation.
A kind of specific embodiment of flowmeter flow sensing circuit of the present invention as shown in Figure 1, including gage probe U1,
The connector P1 of first magnetic induction sensor U2 and Header4 type.It allows the VCC pin of gage probe U1 to connect power supply, allows metering
The GND pin of sensor U1 is grounded, and connect the OUT pin of gage probe U1 with the terminal 2 of connector P1.Allow the first magnetic
The VCC pin of inductive pick-up U2 connects power supply, allows the GND pin of the first magnetic induction sensor U2 to be grounded, and make the first magnetic induction
The OUT pin of sensor U2 is connect with the terminal 1 of connector P1, and the terminal 3 of connector P1 is allowed to be grounded, and allows connector P1's
Terminal 4 connects power supply.Wherein, gage probe U1 and the first magnetic induction sensor U2 is Hall sensor, gage probe U1
For detection gas flow, the first magnetic induction sensor U2 is used for detection magnetic interference signal, connector P1 and gas flowmeter
Microprocessor connection.Be arranged through the above structure just constitute it is a kind of of simple structure and low cost, sensitive, practical
Flowmeter flow sensing circuit.In practical applications, gage probe U1 real-time detection gas flow, when there are magnetic disturbance letters
Number when, gage probe U1 and the first magnetic induction sensor U2 can be affected simultaneously, pass through the first magnetic induction sensor U2 touch
It signals and sends microprocessor to, allow microprocessor using gas flow substitution value that detection of gas flow rate value is replaced to carry out gas
Flux scale condition volume calculates, and can effectively avoid gas flowmeter because being disturbed magnetic field influences the problem of can not normally measuring, and improves
The diamagnetic ability and anti-theft gaseous of gas flowmeter are horizontal.It should be noted that the flow detection electricity with existing gas flowmeter
Road is compared, and the present invention enhances the functionality of flow sensing circuit by the way that the first magnetic induction sensor U2 is arranged, in practical application
In, gage probe U1 and the first magnetic induction sensor U2 generally use the Hall sensor of YS44E type, and but it is not limited to this,
The sensor of other same functions can also be used.
As prioritization scheme, present embodiment is provided with the second magnetic induction sensor U3 and NAND gate chip U4.Its
In, the A pin of NAND gate chip U4 is connect with the OUT pin of the second magnetic induction sensor U3, the B pin of NAND gate chip U4 with
The OUT pin of first magnetic induction sensor U2 connects, the GND pin ground connection of NAND gate chip U4, the VCC pipe of NAND gate chip U4
Foot connects power supply, and the Y pin of NAND gate chip U4 is connect with the terminal 1 of connector P1；Second magnetic induction sensor U3 is Hall biography
Sensor, the VCC pin of the second magnetic induction sensor U3 connect power supply, the GND pin ground connection of the second magnetic induction sensor U3.This
As long as structure setting the first magnetic induction sensor U2 and the second magnetic induction sensor U3 one of both detect magnetic disturbance signal, i.e.,
It can trigger signal and microprocessor made to carry out gas flow mark condition volume using gas flow substitution value and calculate, further enhance
Multiple Type can be used in the magnetic disturbance signal testing function of flow sensing circuit, in practical applications, NAND gate chip U4, such as
HD74HCOOP etc., as long as being able to achieve the object of the invention.Meanwhile the present invention is usually by the first magnetic induction sensor U2 and
Two magnetic induction sensor U3 are correspondingly arranged at two side positions of gage probe U1, to avoid missing inspection.It should be noted that in reality
In the application of border, the present invention is also provided with capacitor C1 and capacitor C2, and makes the both ends of capacitor C1 corresponding and the VCC of gage probe U1
Pin is connected with GND pin, and the corresponding VCC pin and GND pin with the first magnetic induction sensor U2 in the both ends of capacitor C2 is allowed to connect
It connects, and makes the VCC pin of the second magnetic induction sensor U3 and the corresponding VCC pin with the first magnetic induction sensor U2 of GND pin
It is connected with GND pin.
As shown in Fig. 2, based on the same inventive concept, the present invention also provides a kind of gas flowmeters to measure abnormality processing side
Method, wherein gas flowmeter includes above-mentioned flow sensing circuit, metering abnormality eliminating method the following steps are included:
One, it allows gage probe U1 real-time detection gas flow, as flow detection value, and calculates and storage flow detection
The daily mean of value.By the way of the daily mean of storage flow detection value, memory space can be reduced, improve execution efficiency.
Two, the first magnetic induction sensor U2 and the second magnetic induction sensor U3 real-time detection is allowed to believe with the presence or absence of magnetic disturbance
Number.
Three, when magnetic disturbance signal is not detected in the first magnetic induction sensor U2 and the second magnetic induction sensor U3, with stream
Flow parameter of the detection values as gas flow mark condition volume operation；Otherwise, step 4 is carried out.
Four, to set the mean value that the time limit calculates flow detection average value on duty for the day, as flow analysis value, by flow analysis value
Compared with flow detection value, when flow detection value is greater than or equal to flow analysis value, using flow detection value as gas flow
Mark the flow parameter of condition volume operation；Otherwise, step 5 is carried out.
Five, compare flow analysis value and flow preset value, when flow analysis value is greater than or equal to flow preset value, with stream
Measure flow parameter of the assay value as gas flow mark condition volume operation；Otherwise, using flow preset value as gas flow mark condition
The flow parameter of volume operation.
The above-mentioned setting time limit is arranged according to the user type and applying working condition of gas flowmeter, in practical applications originally
The setting time limit is usually set as 60~90 days by invention, to guarantee that gas flow mark condition volume calculated result is bonded actual condition.On
Stating flow preset value is that gas flowmeter is preset when leaving the factory, is arranged according to the specification of gas flowmeter under normal conditions
's.
A kind of gas flowmeter provided by the invention measures abnormality eliminating method, when there is magnetic disturbance signal by using
Flow analysis value or flow preset value substitute flow detection value, as the flow parameter of gas flow mark condition volume operation, solve
For gas flowmeter because of the problem of can not normally being measured by magnetic disturbance, the anti-theft gaseous for improving gas flowmeter is horizontal and stablize
Property.Meanwhile when because of gage probe U1 by magnetic disturbance, detection of gas flow rate signal would generally reduce or disappear, and the present invention is logical
The size for successively comparing flow detection value, flow analysis value and flow preset value is crossed, and uses big value person as gas stream
The flow parameter of amount mark condition volume operation, can make metric results more be bonded actual condition.
Above embodiments are only the descriptions carried out to the preferred embodiment of the present invention, and model not is claimed to the present invention
It encloses and is defined, without departing from the spirit of the design of the present invention, the technology of this field engineers and technicians according to the present invention
The various forms of deformations that scheme is made, should fall within the scope of protection determined by the claims of the present invention.
Claims (5)
1. a kind of flowmeter flow sensing circuit, which is characterized in that including gage probe U1, the first magnetic induction sensor U2 and
The connector P1 of Header4 type；The VCC pin of gage probe U1 connects power supply, the GND pin ground connection of gage probe U1, meter
The OUT pin of quantity sensor U1 is connect with the terminal 2 of connector P1；The VCC pin of first magnetic induction sensor U2 connects power supply, the
The GND pin of one magnetic induction sensor U2 is grounded, and the OUT pin of the first magnetic induction sensor U2 and the terminal 1 of connector P1 connect
It connects, the terminal 3 of connector P1 is grounded, and the terminal 4 of connector P1 connects power supply；Gage probe U1 and the first magnetic induction sensor U2
It is Hall sensor, gage probe U1 is used for detection gas flow, and the first magnetic induction sensor U2 is for detecting magnetic disturbance
The microprocessor of signal, connector P1 and gas flowmeter connects.
2. a kind of flowmeter flow sensing circuit described in accordance with the claim 1, which is characterized in that further include that the second magnetic induction passes
Sensor U3 and NAND gate chip U4；The A pin of NAND gate chip U4 is connect with the OUT pin of the second magnetic induction sensor U3, with
The B pin of NOT gate chip U4 is connect with the OUT pin of the first magnetic induction sensor U2, the GND pin ground connection of NAND gate chip U4,
The VCC pin of NAND gate chip U4 connects power supply, and the Y pin of NAND gate chip U4 is connect with the terminal 1 of connector P1；Second magnetic strength
The VCC pin of inductive sensing device U3 connects power supply, the GND pin ground connection of the second magnetic induction sensor U3；Second magnetic induction sensor U3
For Hall sensor.
3. a kind of flowmeter flow sensing circuit according to claim 2, which is characterized in that the first magnetic strength inductive sensing
Device U2 and the second magnetic induction sensor U3 is correspondingly arranged at the two sides of gage probe U1.
4. a kind of gas flowmeter measures abnormality eliminating method, which is characterized in that the gas flowmeter includes claim 3 institute
The flow sensing circuit stated, the metering abnormality eliminating method the following steps are included:
One, it allows gage probe U1 real-time detection gas flow, as flow detection value, and calculates and storage flow detection value
Daily mean；
Two, allow the first magnetic induction sensor U2 and the second magnetic induction sensor U3 real-time detection with the presence or absence of magnetic disturbance signal；
Three, it when magnetic disturbance signal is not detected in the first magnetic induction sensor U2 and the second magnetic induction sensor U3, is examined with flow
Flow parameter of the measured value as gas flow mark condition volume operation；Otherwise, step 4 is carried out；
Four, to set the mean value that the time limit calculates flow detection average value on duty for the day, as flow analysis value, by flow analysis value and stream
Detection values compare, when flow detection value is greater than or equal to flow analysis value, using flow detection value as gas flow mark condition
The flow parameter of volume operation；Otherwise, step 5 is carried out；
Five, compare flow analysis value and flow preset value, when flow analysis value is greater than or equal to flow preset value, with flow point
Flow parameter of the analysis value as gas flow mark condition volume operation；Otherwise, using flow preset value as gas flow mark condition volume
The flow parameter of operation；
The setting time limit is arranged according to the user type and applying working condition of gas flowmeter, and the flow preset value is gas
Flowmeter body is preset when leaving the factory.
5. a kind of gas flowmeter measures abnormality eliminating method according to claim 4, which is characterized in that in step 4
In, it is described to set the time limit as 60~90 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811390098.0A CN109323734A (en) | 2018-11-21 | 2018-11-21 | A kind of flowmeter flow sensing circuit and metering abnormality eliminating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811390098.0A CN109323734A (en) | 2018-11-21 | 2018-11-21 | A kind of flowmeter flow sensing circuit and metering abnormality eliminating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109323734A true CN109323734A (en) | 2019-02-12 |
Family
ID=65258574
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811390098.0A Pending CN109323734A (en) | 2018-11-21 | 2018-11-21 | A kind of flowmeter flow sensing circuit and metering abnormality eliminating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109323734A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261146A (en) * | 2007-03-09 | 2008-09-10 | 株式会社东芝 | Water meter |
| CN103557901A (en) * | 2013-11-20 | 2014-02-05 | 梁国栋 | Intelligent metering device with antimagnetic function |
| CN106766226A (en) * | 2017-02-04 | 2017-05-31 | 余姚市嘉荣电子电器有限公司 | Wireless water flow sensing unit circuit |
-
2018
- 2018-11-21 CN CN201811390098.0A patent/CN109323734A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101261146A (en) * | 2007-03-09 | 2008-09-10 | 株式会社东芝 | Water meter |
| CN103557901A (en) * | 2013-11-20 | 2014-02-05 | 梁国栋 | Intelligent metering device with antimagnetic function |
| CN106766226A (en) * | 2017-02-04 | 2017-05-31 | 余姚市嘉荣电子电器有限公司 | Wireless water flow sensing unit circuit |
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Application publication date: 20190212 |
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