CN107014455B - A kind of quality formula flow internet of things sensors - Google Patents
A kind of quality formula flow internet of things sensors Download PDFInfo
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- CN107014455B CN107014455B CN201710409732.XA CN201710409732A CN107014455B CN 107014455 B CN107014455 B CN 107014455B CN 201710409732 A CN201710409732 A CN 201710409732A CN 107014455 B CN107014455 B CN 107014455B
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- float
- flow
- strain gage
- resistance strain
- fluid channel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/86—Indirect mass flowmeters, e.g. measuring volume flow and density, temperature or pressure
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- Fluid Mechanics (AREA)
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- Measuring Volume Flow (AREA)
Abstract
The invention discloses a kind of quality formula flow internet of things sensors, including fluid channel, air inlet and gas outlet, fluid channel top is floating drum, float group is equipped in floating drum, float group is made of multiple floats, and float is nested successively from large to small, and maximum float is located at floating drum bottom；Resistance strain gage is equipped in fluid channel, under the action of air-flow, float floats float group, can trigger resistance strain gage deformation, pass through resistance strain gage deflection, micro mass change is obtained, is run by microcontroller, the flow velocity signal of fluid is obtained, resistance strain gage connects the input terminal of Wheatstone bridge, the output end of Wheatstone bridge connects the input terminal of microcontroller, obtains flow value to quality and flow velocity and time parameter operation by microcontroller, realizes the measurement of gas quantity metering.The present invention uses quality testing mode, it can be achieved that wide-range, high-precision, small size, low cost, the metering of highly reliable gas quantity, have very strong promotion and application value.
Description
Technical field
The present invention relates to a kind of flowmeter more particularly to quality formula flow internet of things sensors.
Background technology
Measurement instrument of the gas flow gauge table (gas meter, flow meter) as metering gas volume amount, it has accumulative body automatically
The function of product so that those easily can know how much gas used, so as to energy using the user of natural gas or piped gas
According to the cubic meter number payment of monthly consumption combustion gas.Traditional gas meter, flow meter, substantially in the majority with diaphragm gauge, volume is big, measurement range
It is narrow.Gas metering electronization, is trend of the times, especially ultrasonic wave gas meter, by high praise, but up to the present, removes big mouth
Outside diameter ultrasonic wave gas meter commercialization, in terms of small flow (G4.0 or less) domestic gas metering, the ultrasound using 200K is needed
Wave transducer needs boosting to handle, and power consumption is big, of high cost, high-voltage pulse there is also security risk, small flow (100L/h) with
Under, measurement effect is very bad, therefore never realizes commercialization application.
Invention content
The purpose of the present invention is for above-mentioned gas meter there are the problem of, a kind of quality formula flow Internet of Things is provided
Sensor is, it can be achieved that wide-range, high-precision, small size, low cost, the metering of highly reliable gas quantity.
To achieve the above object, the present invention provides the following technical solutions：A kind of quality formula flow internet of things sensors, including
Fluid channel, air inlet and gas outlet, it is characterized in that：Fluid channel top is floating drum, is equipped with float group in floating drum, float group by
Multiple float compositions, float is nested successively from large to small, and maximum float is located at floating drum bottom；It is answered equipped with resistance in fluid channel
Becoming piece, under the action of air-flow, float floats float group, can trigger resistance strain gage deformation, by resistance strain gage deflection,
Micro mass change is obtained, is run by microcontroller, the flow velocity signal of fluid is obtained, resistance strain gage connects the defeated of Wheatstone bridge
Enter end, the output end of Wheatstone bridge connects the input terminal of microcontroller, by microcontroller to quality and flow velocity and time parameter operation
Flow value is obtained, realizes the measurement of gas quantity metering.
The bridge circuit that Wheatstone bridge is made of four resistance, this four resistance are called the bridge arm of electric bridge respectively, this
One of invention resistance is resistance strain gage, and Wheatstone bridge measures the variation of physical quantity using the variation of resistance, single
Then the voltage that piece machine acquires variable resistance both ends is handled, so that it may be a kind of precision to calculate the variation of corresponding physical quantity
Very high measurement method.
When it is implemented, resistance strain gage is located at the fluid channel below float group, resistance strain gage trepanning, minimum is floating
Sub- lower end is connect with bracing wire, is drawstring through the trepanning of resistance strain gage, and limiting card, float group are equipped in the bracing wire on the downside of trepanning
Under the action of air-flow, float floats, and limiting card withstands on the bottom surface of resistance strain gage, triggering resistance strain gage deformation.
When it is implemented, resistance strain gage is located at the fluid channel above float group, resistance-strain under piece is connected with mandril,
Above the float of jack end face minimum, under the action of air-flow, float floats float group, and minimum float withstands on mandril end
End, mandril trigger resistance strain gage deformation.
When it is implemented, equipped with the control circuit for waking up sleep, Wheatstone bridge exports the control for waking up sleep by A/D
Circuit start test processed, when air-flow initially enters fluid channel, the active force that float floats triggers resistance strain gage, connects electricity
Source.
When it is implemented, be equipped with power initiation mechanism for testing, start mechanism for testing include mechanical switch, when air-flow start into
Enter fluid channel, the active force that float floats, which powers on to remake after startup is tested by mechanical switch, uses resistance strain gage
On.The active force of float, which powers on to remake after startup is tested by mechanical switch, uses resistance-strain on piece, saves to greatest extent
Save battery consumption.
Wheatstone bridge exports the control circuit startup test for waking up sleep by A/D, or is connect by mechanical switch
It is remake after logical power initiation test and uses resistance-strain on piece, save battery consumption to greatest extent.The present invention has fluid to pass through,
Start to measure, otherwise not work, can be greatly saved the energy content of battery, and supersonic wave metering mode at present, at every moment carry out
The work of measurement, power consumption are big.
When it is implemented, fluid channel inner wall is respectively equipped with control storehouse and power storehouse, controls and set respectively in storehouse and power storehouse
There are control circuit and battery.
When it is implemented, the minimum float in float group is spherical float, the top of other floats is tubular, and lower part is circle
Taper, conical tapered end trepanning, float is nested successively from large to small, and the circular conical surface of adjacent float is affixed, spherical float position
In the tapered end tapping of the cone of the second light float, maximum float cylindrical outer wall and floating drum inner wall are equipped with gap, each phase
Gap is equipped between the cylindrical body of adjacent float, above-mentioned gap forms flow channel.
When it is implemented, microcontroller and display, communication interface, temperature sensor, pressure sensor, valve actuator
It is connected.
The beneficial effects of the invention are as follows：The present invention use quality testing mode, it can be achieved that wide-range, high-precision, small size,
Inexpensive, highly reliable gas quantity metering, has very strong promotion and application value.
Description of the drawings
Fig. 1 is first embodiment of the invention stay-supported quality formula flow internet of things sensors structural schematic diagram.
Fig. 2 is the micro- float floating work signal of first embodiment of the invention stay-supported quality formula flow internet of things sensors
Figure；
Fig. 3 is the small float floating work signal of first embodiment of the invention stay-supported quality formula flow internet of things sensors
Figure；
Fig. 4 is that float floating work is illustrated in first embodiment of the invention stay-supported quality formula flow internet of things sensors
Figure；
Fig. 5 is the big float floating work signal of first embodiment of the invention stay-supported quality formula flow internet of things sensors
Figure；
Fig. 6 is that the present invention applies a first embodiment stay-supported quality formula flow internet of things sensors circuit theory schematic diagram；
Fig. 7 is second embodiment of the invention post rod type quality formula flow internet of things sensors structural schematic diagram；
Fig. 8 is that the present invention applies a second embodiment post rod type quality formula flow internet of things sensors circuit theory schematic diagram.
In figure：1, air inlet；2, air inlet hickey；3, storehouse is controlled；4, resistance strain gage；5, resistance strain gage is fixed
Point；6, big float；7, middle float；8, small float；9, gas outlet；10, outlet hickey；11, floating drum；12, micro- float；13、
Bracing wire；14, power storehouse；15, trepanning；16, bracing wire card；17, flow channel；16A, pallet；13A mandrils；MCU, microcontroller.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1：
It please refers to Fig.1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a kind of quality formula flow internet of things sensors, including both ends
Air inlet hickey 2 and outlet hickey 10, air inlet 1 and gas outlet 9 are located at air inlet hickey 2 and outlet screw thread
It is fluid channel in interface 10, between air inlet 1 and gas outlet 9, fluid channel top is floating drum 11, and floating drum 11 has step
Face, floating drum 11 is interior to be equipped with float group, and float group is made of multiple floats, and float is nested successively from large to small, maximum float position
In on the step surface of floating drum 11, fluid channel inner wall is respectively equipped with control storehouse 3 and power storehouse 14, controls in storehouse 3 and power storehouse 14
It is respectively equipped with control circuit and battery, control circuit is equipped with single-chip microprocessor MCU, and circuit provides power supply to battery in order to control.The present invention is real
It applies a float group and uses four float combinations, respectively micro- float 12, small float 8, middle float 7 and big float 6, are floated from inside to outside
Minimum float is micro- float 12 in subgroup, and structure is spherical shape, and the top of small float 8, middle float 7 and big float 6 is cylinder
Shape, lower part are cone, and conical tapered end trepanning, each float is nested with floating drum center by one group of float from small to large, adjacent
The circular conical surface of float be affixed, spherical float is located at the tapered end tapping of the cone of small float 8 (the second light float), big floating
Sub 6 (maximum float) cylindrical outer walls and floating drum inner wall are equipped with gap, and gap is equipped between the cylindrical body of each adjacent buoys, above-mentioned
Gap forms flow channel 17.Resistance strain gage 4 is equipped in fluid channel, one end of resistance strain gage 4 is fixed in fluid channel
Resistance strain gage fixed point 5 at wall, under the action of air-flow, float floats float group, can trigger the deformation of resistance strain gage 4,
By 4 deflection of resistance strain gage, micro mass change is obtained, is run by microcontroller, obtains the flow velocity signal of fluid, it is micro- floating
Sub 12 lower ends are connect with bracing wire 13, and bracing wire 13 passes through the trepanning 15 of resistance strain gage 4, are equipped in the bracing wire 13 of 15 downside of trepanning
Limiting card 16, resistance strain gage 4 connect the input terminal of Wheatstone bridge, and the output end of Wheatstone bridge connects the input of single-chip microprocessor MCU
End, the output end of Wheatstone bridge connects the input terminal of single-chip microprocessor MCU, by single-chip microprocessor MCU to quality and flow velocity and time parameter
Operation obtains flow value, realizes the measurement of gas quantity metering.
Single-chip microprocessor MCU connects display, communication interface, temperature sensor, pressure sensor, valve actuator.It has constituted
Whole measuring system, measuring principle are shown in the following example.
In the present embodiment, the range of big float 6 is 400-4000L/h；The range of middle float 7 is 100-1000L/h；It is small floating
The range of son 8 is 16-160L/h；；The range of micro- float 12 is 50-500mL.
Such as Fig. 1 and Fig. 2, show one small flow (50mL-500mL) embodiment, when faint gas from air inlet 1 into
After entering, since its small float 8, middle float 7 and big float 6 are heavier, faint deficiency of air is to be floated, only float 12
It can float, air-flow is flowed out from flow channel 17, and float 12 drives bracing wire 13 to move up, when the limiting card 16 of bracing wire 13 is applied to resistance
When foil gauge 4, deformation is generated, resistance bridge has voltage output to A/D mouthfuls of single-chip microprocessor MCU, and is calculated by the following formula and is surveyed
Magnitude.
The bridge circuit that Wheatstone bridge is made of four resistance, this four resistance are called the bridge arm of electric bridge respectively, this
One of invention resistance is resistance strain gage 4, and Wheatstone bridge measures the variation of physical quantity using the variation of resistance, single
Then the voltage at piece machine MCU acquisition variable resistances both ends is handled, so that it may be a kind of essence to calculate the variation of corresponding physical quantity
The very high measurement method of degree.R1 is the resistance of resistance strain gage 4, if R1=R2=R3=R4 or R1 × R2=R3 ×
No matter R4 then inputs much voltage, and output voltage is always 0, and this state is equilibrium state.4 deformation of resistance strain gage destroys flat
After weighing apparatus, output voltage corresponding with resistance variations is generated, the variable quantity for straining sheet resistance is Δ R, the then calculating of output voltage
Formula is e=(1/4) * (Δ R/R) * E, i.e. e=(1/4) * K* ε * E, is known quantity in formula other than ε, so if surveying
The size of strain can be calculated by going out the output voltage of electric bridge, by " mass-flow constant table " in single-chip microprocessor MCU and be repaiied
Positive coefficient can generate the variation of flow, the i.e. operation of the flow velocity of unit interval and time, flowed according to the variation of quality
Magnitude, single-chip microprocessor MCU memory integrated flow, and carry out follow-up possible operation：It has been shown that, communication, control.
The resistance strain gage 4 of 0.01g precision, range ability 0.01-500g is used to be transported by single-chip microprocessor MCU in this
Calculate, calibration range, realize 3L-4000L flow velocity obtain, then with temporal calculation, obtain the flow of gas, if combination temperature pass
The amendment of sensor and pressure sensor can obtain high-precision metric results.
In Fig. 3, Fig. 4 and Fig. 5, and so on, it, can be respectively by small float 8, middle float 7 and big when air-flow constantly increases
Float 6 boosts in succession, but all acts on micro- float 12, is acted on resistance strain gage 4 by bracing wire, corresponding to generate
Output realizes the wide-range high-precision metering of 3-4000L/h by calibration.
Embodiment 2：
Fig. 7 and Fig. 8 are please referred to, structure and principle are not repeated description, resistance strain gage 4 herein substantially with embodiment 1
Fluid channel above float group is connected with mandril 13A, the ends mandril 13A connecting trays 16A under resistance strain gage 4, holds in the palm
Above the micro- float of disk 16A faces 12, under the action of air-flow, float floats float group, and minimum float withstands on jack end, pushes up
Bar 13A triggering resistance strain gages 4 deform.The state that resistance strain gage 4 is arranged in float group upper end, mandril 13A are hard with resistor disc 4
Property connection, and do zeroing processing, when float floats, behind top to the bottoms pallet 16A, resistance strain gage deformation made by mandril 13A,
Signal is sent to single-chip microprocessor MCU processing, obtains qualitative data, by operation, obtains flow, and cumulative record, obtains data.
To ensure to save battery consumption to greatest extent, it can be equipped with the control circuit for waking up sleep, Wheatstone bridge is logical
The control circuit startup test that A/D outputs wake up sleep is crossed, when air-flow initially enters fluid channel, the active force that float floats touches
Resistance strain gage 4 is sent out, is powered on.In the present embodiment, it is equipped with power initiation mechanism for testing, starts mechanism for testing and is opened including machinery
17 are closed, when air-flow initially enters fluid channel, after the active force that float floats powers on startup test by mechanical switch 17
It remakes and uses on resistance strain gage 4.The active force of float, which powers on to remake after startup is tested by mechanical switch 17, uses electricity
It hinders on foil gauge 4, saves battery consumption to greatest extent.
The present invention can be used for the metering of any fluid, however it is not limited to combustion gas.
It should be noted that in the description of the present invention, it is to be understood that, term "left", "right", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "top", " inside ", " outside " is orientation based on ... shown in the drawings or position
Relationship is merely for convenience of description of the present invention and simplification of the description, do not indicate or imply the indicated device must have it is specific
Orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the scope of the invention.Herein,
The terms "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, so that including a series of
The process, method, article or equipment of element includes not only those elements, but also includes that other being not explicitly listed are wanted
Element, or further include for elements inherent to such a process, method, article, or device.The case where not limiting more
Under.By sentence " including one ... the element limited, it is not excluded that including the element process, method, article or
There is also other identical elements in equipment ".
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of quality formula flow internet of things sensors, including fluid channel, air inlet and gas outlet, it is characterized in that：Fluid is logical
Road top is floating drum, and float group is equipped in floating drum, and float group is made of multiple floats, and float is nested successively from large to small, maximum
Float be located at floating drum bottom；Minimum float in float group is spherical float, and the top of other floats is tubular, and lower part is circle
Taper, conical tapered end trepanning, float is nested successively from large to small, and the circular conical surface of adjacent float is affixed, spherical float position
In the tapered end tapping of the cone of the second light float, maximum float cylindrical outer wall and floating drum inner wall are equipped with gap, each phase
Gap is equipped between the cylindrical body of adjacent float, above-mentioned gap forms flow channel；Resistance strain gage, float group are equipped in fluid channel
Under the action of air-flow, float floats, and can trigger resistance strain gage deformation, by resistance strain gage deflection, obtain micro matter
Amount variation, runs by microcontroller, obtains the flow velocity signal of fluid, resistance strain gage meets the input terminal of Wheatstone bridge, Hui Si
The output end of energization bridge connects the input terminal of microcontroller, and flow is obtained to quality and flow velocity and time parameter operation by microcontroller
Value realizes the measurement of gas quantity metering.
2. a kind of quality formula flow internet of things sensors according to claim 1, it is characterised in that：Resistance strain gage is located at
Fluid channel below float group, resistance strain gage trepanning, minimum float lower end are connect with bracing wire, are drawstring through resistance-strain
The trepanning of piece is equipped with limiting card in the bracing wire on the downside of trepanning, and under the action of air-flow, float floats float group, limiting card top
In the bottom surface of resistance strain gage, triggering resistance strain gage deformation.
3. a kind of quality formula flow internet of things sensors according to claim 1, it is characterised in that：Resistance strain gage is located at
Fluid channel above float group, resistance-strain under piece are connected with mandril, above the float of jack end face minimum, float group
Under the action of air-flow, float floats, and minimum float withstands on jack end, and mandril triggers resistance strain gage deformation.
4. a kind of quality formula flow internet of things sensors according to claim 1,2 or 3, it is characterised in that：Equipped with wake-up
The control circuit of sleep, Wheatstone bridge by A/D export wake up sleep control circuit start test, when air-flow start into
Enter fluid channel, the active force that float floats triggers resistance strain gage, powers on.
5. a kind of quality formula flow internet of things sensors according to claim 1,2 or 3, it is characterised in that：Equipped with power supply
Start mechanism for testing, it includes mechanical switch to start mechanism for testing, when air-flow initially enters fluid channel, the active force that float floats
Power on to remake after startup is tested by mechanical switch and uses resistance-strain on piece.
6. a kind of quality formula flow internet of things sensors according to claim 1,2 or 3, it is characterised in that：Fluid channel
Inner wall is respectively equipped with control storehouse and power storehouse, controls in storehouse and power storehouse and is respectively equipped with control circuit and battery.
7. a kind of quality formula flow internet of things sensors according to claim 1,2 or 3, it is characterised in that：Microcontroller with
Display, communication interface, temperature sensor, pressure sensor, valve actuator are connected.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710409732.XA CN107014455B (en) | 2017-06-02 | 2017-06-02 | A kind of quality formula flow internet of things sensors |
| PCT/CN2017/088562 WO2018218703A1 (en) | 2017-06-02 | 2017-06-16 | Mass flow internet of things sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710409732.XA CN107014455B (en) | 2017-06-02 | 2017-06-02 | A kind of quality formula flow internet of things sensors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107014455A CN107014455A (en) | 2017-08-04 |
| CN107014455B true CN107014455B (en) | 2018-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710409732.XA Active CN107014455B (en) | 2017-06-02 | 2017-06-02 | A kind of quality formula flow internet of things sensors |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107014455B (en) |
| WO (1) | WO2018218703A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111301833A (en) * | 2020-03-26 | 2020-06-19 | 河南金拇指防水科技股份有限公司 | Raw material barrel |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3720109A (en) * | 1971-05-03 | 1973-03-13 | Pro Tech Inc | Fluid-operated sampler and flowmeter |
| JPS536068A (en) * | 1976-07-07 | 1978-01-20 | Hitachi Ltd | Rotameter |
| CN2105671U (en) * | 1991-09-26 | 1992-05-27 | 邵文远 | Mass flowmeter for small flow |
| BE1007562A6 (en) * | 1993-10-05 | 1995-08-08 | Lenfant Theo | Improvement of a float flowmeter |
| CN2185891Y (en) * | 1994-01-11 | 1994-12-21 | 大连经济技术开发区广裕自动化研究中心 | Electromagnetic on line density sensor |
| CN2247808Y (en) * | 1994-09-20 | 1997-02-19 | 居福林 | Liquid flow direction and density on-line display device |
| CN2337532Y (en) * | 1998-07-11 | 1999-09-08 | 开封红旗仪表有限责任公司 | Glass tube wide-range flowrator |
| CN2548124Y (en) * | 2002-06-11 | 2003-04-30 | 王永忠 | Suspension type gas-flow sensor |
| CN100485326C (en) * | 2005-11-18 | 2009-05-06 | 王永忠 | Wide-range float type flow sensor |
| JP2011075309A (en) * | 2009-09-29 | 2011-04-14 | Tech In Tech Co Ltd | Flowmeter and mass flow controller |
| CN201680865U (en) * | 2010-05-07 | 2010-12-22 | 上海肯特仪表股份有限公司 | High-accuracy tapered tube floater flow meter |
| CN102183275A (en) * | 2011-01-21 | 2011-09-14 | 苏州聚元微电子有限公司 | Low-power consumption float flow sensor |
| CN205138942U (en) * | 2015-11-19 | 2016-04-06 | 中国石油集团西部钻探工程有限公司 | Liquid density on - line measuring device |
| CN206832304U (en) * | 2017-06-02 | 2018-01-02 | 浙江圣地物联科技有限公司 | A kind of quality formula flow internet of things sensors |
-
2017
- 2017-06-02 CN CN201710409732.XA patent/CN107014455B/en active Active
- 2017-06-16 WO PCT/CN2017/088562 patent/WO2018218703A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN107014455A (en) | 2017-08-04 |
| WO2018218703A1 (en) | 2018-12-06 |
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