CN109141730A - A kind of wind-force wind pressure measuring meter - Google Patents
A kind of wind-force wind pressure measuring meter Download PDFInfo
- Publication number
- CN109141730A CN109141730A CN201810992068.0A CN201810992068A CN109141730A CN 109141730 A CN109141730 A CN 109141730A CN 201810992068 A CN201810992068 A CN 201810992068A CN 109141730 A CN109141730 A CN 109141730A
- Authority
- CN
- China
- Prior art keywords
- wind
- wind pressure
- foil gauge
- measurement chip
- pressure measuring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011888 foil Substances 0.000 claims abstract description 34
- 238000005259 measurement Methods 0.000 claims abstract description 29
- 229920001971 elastomer Polymers 0.000 claims abstract description 22
- 239000000806 elastomer Substances 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 2
- -1 aluminium gold Chemical compound 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000013500 data storage Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/02—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning
- G01L9/04—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in ohmic resistance, e.g. of potentiometers, electric circuits therefor, e.g. bridges, amplifiers or signal conditioning of resistance-strain gauges
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a kind of wind-force wind pressure measuring meters, described device is mounted on fan outlet, the device includes electric resistance wire strain gauge, measurement chip and the power module for electric resistance wire strain gauge and measurement chip power supply, the electric resistance wire strain gauge is made of return type elastomer and the foil gauge of at least one, the deformation quantity of return type elastomer can be converted to voltage signal and be transferred to measurement chip by the foil gauge, measurement chip handles the signal received, calculates the wind pressure value of air outlet.It is the configuration of the present invention is simple, easy to use, the cost of electronic circuit is greatly reduced, even if being used in dust atmosphere, its detection performance will not be impacted.
Description
Technical field
The present invention relates to the wind-force detections of the blowers such as air-conditioning, air purifier, fresh air system operating air outlet, especially relate to
And a kind of wind-force wind pressure measuring meter.
Background technique
It is in the prior art usually that air-conditioning, air purifier, fresh air system etc. are measured by measurement blower running speed
Blower operates the wind-force of air outlet, so judge the whether clean strainer of air inlet or blocking or blower whether aging, damage
It is bad.Wind pressure measurement module currently on the market is substantially all only using displacement sensor and pressure sensor.
Have the following deficiencies: one using the wind pressure measurement module of displacement sensor, according to be electromagnetic type displacement sensing
Device, electromagnetic type displacement sensor needs are powered with AC sine wave, and its output end is also required to setting current rectifying and wave filtering circuit,
Design is complicated；Two, according to be resistor type displacement sensor, the service life of resistor type displacement sensor is short, when cannot be long
Between use, use cost is high；Three, displacement sensor is all that the variable quantity of position is converted to electric signal to export；As long as having
Change in location accumulates dust in the meeting being used for a long time on lower sensor, to influence the accuracy of its detection；Four, sensor at
This is higher；Five, circuit design is at high cost.
Have the following deficiencies: that one, pressure sensor is generally divided into diffusion silicon using the wind pressure measurement module of pressure sensor
Pressure sensor and ceramic capacitive pressure sensors, both pressure sensors are more demanding to use environment, in dust atmosphere
The lower possibility that there is failure；Two, diffusion silicon pressure sensor is generally all made of semiconductor, small in size, and pressure sensing port is also small,
It is easy to be blocked by dust to make sensor failure；Three, ceramic capacitive pressure sensors and diffused-silicon pressure sensing are all benefits
Induction air pressure is removed with the film on sensor, once will be easy to influence the accuracy of measurement after having dust accumulation on film；Four,
Sensor high expensive；Five, circuit design is at high cost.
Summary of the invention
The purpose of the present invention is overcome the deficiencies in the prior art, design a kind of wind-force wind pressure measuring meter.
In order to achieve the above objectives, the technical scheme adopted by the invention is that:
A kind of wind-force wind pressure measuring meter, described device are mounted on fan outlet, which includes electric resistance wire strain gauge, measurement
Chip and the power module powered for electric resistance wire strain gauge and measurement chip, the electric resistance wire strain gauge is by return type elastomer
It is constituted with the foil gauge of at least one, the return type elastomer, to generate corresponding deformation under the action of air outlet wind pressure,
It is internally provided with two circular through holes being connected；The foil gauge is fixed on the upper surface of return type elastomer, will return
The deformation quantity of compound elastic body is converted to the voltage signal linear with it, and the voltage signal is transferred to measurement core
Piece；The measurement chip includes Differential Input analog-to-digital conversion module, MCU, storage unit, serial ports and PWM chip, and the difference is defeated
Enter analog-to-digital conversion module to receive the voltage signal of foil gauge transmission and convert the signal into digital data transmission to MCU, MCU pairs
The signal received is handled to obtain the wind pressure value of air outlet, and by treated, storage unit is arrived in wind pressure data storage to MCU
Meanwhile receiving end is transmitted to by serial ports or after PWM chip impulse modulation.
Preferably, the measurement chip further includes digital analog converter, to obtain amendment voltage from the external world, and
Give the amendment voltage transmission to Differential Input analog-to-digital conversion module, the reference voltage new as Differential Input analog-to-digital conversion module.
Preferably, the serial ports includes RS485 interface, RS422 interface and RS232 interface.
Preferably, the foil gauge is one, which is the foil gauge with wheatstone bridge, or there are two tools
The foil gauge of the half-bridge circuit of strain resistor composition, or there are four the foil gauges of the full-bridge circuit of strain resistor composition for tool.
Preferably, the foil gauge at least two, between foil gauge by aerial lug constitute half-bridge circuit or
Full-bridge circuit.
Preferably, the return type elastomer is integrally machined using aluminum metal material.
Positive beneficial effect of the invention:
1, the configuration of the present invention is simple, easy to use, processes return type elastomer by using aluminum metal material, on elastomer
Foil gauge is pasted, the signal output end of foil gauge and the signal input part of measurement chip is made to be connected, it can be by foil gauge by outlet air
The wind pressure of mouth is converted to voltage signal, and the signal is transmitted in measurement chip, passes through the processing analysis for measuring chip, calculates
The wind pressure value of air outlet out, greatly reduces production cost and material cost.
2, wind-force wind pressure measuring meter of the invention is small in size, low manufacture cost, greatly reduces the cost of electronic circuit,
And long service life, through experimental test, service life is at least up to 6 years, even if using in dust atmosphere, will not be examined to it
Performance is surveyed to impact.
Detailed description of the invention
In order to become apparent to illustrate the embodiment of the present invention or technical solution in the prior art, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is schematic block circuit diagram of the invention.
Fig. 3 is the functional block diagram of present invention measurement chip.
The meaning of figure label are as follows: 1 is foil gauge, and 2 be measurement chip, and 3 be force side, and 4 be circular through hole, and 5 be reply
Formula elastomer.
Specific embodiment
In order to make the objectives, technical solutions and advantages of the present invention clearer, below by shown in the accompanying drawings specific
Embodiment describes the present invention.However, it should be understood that these descriptions are merely illustrative, and it is not intended to limit model of the invention
It encloses.In addition, in the following description, descriptions of well-known structures and technologies are omitted, it is of the invention to avoid unnecessarily obscuring
Concept.
It is only to be not intended to be limiting the disclosure merely for for the purpose of describing particular embodiments in the term that the disclosure uses.
The "an" of the singular used in disclosure and the accompanying claims book, " described " and "the" are also intended to including majority
Form, unless the context clearly indicates other meaning.It is also understood that term "and/or" used herein refers to and wraps
It may be combined containing one or more associated any or all of project listed.
In the description of the present invention, it is to be understood that, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention
System.
In subsequent description, using such as suffix of " module " or " unit " for indicating element only for advantageous
In explanation of the invention, there is no specific meanings for itself.Therefore, " module " can be used mixedly with " component ".
Illustrate present embodiment in conjunction with Fig. 1-Fig. 3, it is net to be mounted on air-conditioning, air to wind-force wind pressure measuring meter of the invention
Change the air outlet of the blowers such as device, fresh air system operating.The device includes electric resistance wire strain gauge, measurement chip 2 and is resistance-type
The power module of strain gauge and measurement chip power supply.
The electric resistance wire strain gauge is made of return type elastomer 5 and the foil gauge 1 of at least one.
The return type elastomer 5, to generate corresponding deformation, return type elastomer 5 under the action of air outlet wind pressure
It is the cube structure made of aluminum metal material is integrally machined, is internally provided with two circular through holes being connected 4.
The foil gauge 1 is fixed on the upper surface of return type elastomer 5, to turn the deformation quantity of return type elastomer 5
It is changed to the voltage signal linear with it, and the voltage signal is transferred to measurement chip.In the present embodiment, if foil gauge
1 when being set as one, which uses the foil gauge with wheatstone bridge, or there are two the half-bridge electricity of strain resistor composition for tool
The foil gauge on road, or there are four the foil gauges of the full-bridge circuit of strain resistor composition for tool；The foil gauge 1 is at least provided with two
It is a, half-bridge circuit or full-bridge circuit are constituted by aerial lug between these foil gauges.
The signal output end of electric resistance wire strain gauge 1 is connected with the signal input part of measurement chip 2, and the measurement setting of chip 2 exists
In one shell, the one end of the shell and the return type elastomer of electric resistance wire strain gauge is mutually fixed, return type elastomer it is another
End is provided with the force side to experience wind-force, and in the present embodiment, which can be set to bowl-shape, the upper end horizontal plane
For stress surface.When the wind of air outlet is applied on force side, return type elastomer is deformed, to make to be attached to return type bullet
Property body upper end the resistance value of foil gauge generate corresponding variation, resistance change amount is converted to accordingly by its measuring circuit
Voltage signal, and the voltage signal is transferred to measurement chip.
The measurement chip includes Differential Input analog-to-digital conversion module (ADC), MCU, storage unit (EEPROM), serial ports
(Interface) and PWM chip, the signal input part of the Differential Input analog-to-digital conversion module and the signal of electric resistance wire strain gauge
Output end be connected, signal output end be connected with the signal input part of MCU, the signal output end of MCU respectively with storage unit, serial ports
It is connected with PWM chip.The program set according to mechanics principle is stored in the MCU, it can be to the number received according to the program
Word signal is handled, to calculate wind pressure value.
After measurement chip 2 receives the voltage signal of foil gauge, internal specific data transmission procedure are as follows: difference is defeated
Enter analog-to-digital conversion module to receive the voltage signal of foil gauge transmission and convert the signal into digital signal, then believes the number
Number it is transferred to MCU, MCU handles the signal received, calculates the wind pressure value of air outlet, and MCU will treated wind pressure
While data storage is to storage unit, by serial ports (RS485 interface, RS422 interface or RS232 interface) by the digital signal
Being transferred to receiving end or MCU, wind pressure data is transferred to PWM chip by treated, and PWM chip carries out pulse tune to the signal
Then system exports the imitated output quantity of 4-20mA, 0-100mA.
The measurement chip 2 further includes digital analog converter (DAC), to obtain amendment voltage from the external world, and should
Amendment voltage transmission gives Differential Input analog-to-digital conversion module, the reference voltage new as Differential Input analog-to-digital conversion module.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that；Still
It can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (6)
1. a kind of wind-force wind pressure measuring meter, which is characterized in that described device is mounted on fan outlet, which includes resistance
Formula strain gauge, measurement chip and the power module for electric resistance wire strain gauge and measurement chip power supply, the electric resistance wire strain gauge
It is made of return type elastomer and the foil gauge of at least one,
The return type elastomer is internally provided with two and is connected to generate corresponding deformation under the action of air outlet wind pressure
Logical circular through hole；
The foil gauge is fixed on the upper surface of return type elastomer, to by the deformation quantity of return type elastomer be converted to and its
Linear voltage signal, and the voltage signal is transferred to measurement chip；
The measurement chip includes Differential Input analog-to-digital conversion module, MCU, storage unit, serial ports and PWM chip, the difference
Input analog-to-digital conversion module receives the voltage signal of foil gauge transmission and converts the signal into digital data transmission to MCU, MCU
The signal received is handled to obtain the wind pressure value of air outlet, by treated, wind pressure data is stored to storage unit MCU
While, receiving end is transmitted to by serial ports or after PWM chip impulse modulation.
2. wind-force wind pressure measuring meter according to claim 1, which is characterized in that the measurement chip further includes digital mould
Quasi- converter to obtain amendment voltage from the external world, and gives the amendment voltage transmission to Differential Input analog-to-digital conversion module, as
The new reference voltage of Differential Input analog-to-digital conversion module.
3. wind-force wind pressure measuring meter according to claim 1, which is characterized in that the serial ports include RS485 interface,
RS422 interface and RS232 interface.
4. wind-force wind pressure measuring meter according to claim 1, which is characterized in that the foil gauge is one, the strain
Piece is the foil gauge with wheatstone bridge, or there are two the foil gauges of the half-bridge circuit of strain resistor composition for tool, or there are four tools
The foil gauge of the full-bridge circuit of strain resistor composition.
5. wind-force wind pressure measuring meter according to claim 1, which is characterized in that the foil gauge at least two is answered
Become between piece and half-bridge circuit or full-bridge circuit are constituted by aerial lug.
6. wind-force wind pressure measuring meter according to claim 1, which is characterized in that the return type elastomer uses aluminium gold
Belong to material to be integrally machined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810992068.0A CN109141730A (en) | 2018-08-29 | 2018-08-29 | A kind of wind-force wind pressure measuring meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810992068.0A CN109141730A (en) | 2018-08-29 | 2018-08-29 | A kind of wind-force wind pressure measuring meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109141730A true CN109141730A (en) | 2019-01-04 |
Family
ID=64828677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810992068.0A Pending CN109141730A (en) | 2018-08-29 | 2018-08-29 | A kind of wind-force wind pressure measuring meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109141730A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323115A (en) * | 2020-03-11 | 2020-06-23 | 宁波奥克斯电气股份有限公司 | Method and system for testing abnormal sound of indoor unit of air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2828774Y (en) * | 2005-06-17 | 2006-10-18 | 南京航空航天大学 | Two-dimensional force/force moment sensor |
| RU2418275C1 (en) * | 2010-03-03 | 2011-05-10 | Государственное образовательное учреждение высшего профессионального образования "Южно-Уральский государственный университет" ГОУ ВПО "ЮУрГУ" | Method of measuring pressure |
| GB201500841D0 (en) * | 2014-01-17 | 2015-03-04 | Hamilton Sundstrand Corp | Strain gauge pressure sensor circuit with sensor disconnect detection |
| CN205210109U (en) * | 2015-10-10 | 2016-05-04 | 云南师范大学 | Novel wind speed tester |
| CN107782369A (en) * | 2017-09-15 | 2018-03-09 | 华侨大学 | A kind of shaft wind resistance detecting system |
| CN108088552A (en) * | 2018-01-31 | 2018-05-29 | 国网重庆市电力公司电力科学研究院 | Transmission line of electricity aero-vibration monitoring device calibrating installation under a kind of site environment |
| CN207570714U (en) * | 2017-12-01 | 2018-07-03 | 广东电网有限责任公司惠州供电局 | A kind of transformer cooler wind detection device |
| CN208887829U (en) * | 2018-08-29 | 2019-05-21 | 健芳电子科技(上海)有限公司 | A kind of wind-force wind pressure measuring meter |
-
2018
- 2018-08-29 CN CN201810992068.0A patent/CN109141730A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2828774Y (en) * | 2005-06-17 | 2006-10-18 | 南京航空航天大学 | Two-dimensional force/force moment sensor |
| RU2418275C1 (en) * | 2010-03-03 | 2011-05-10 | Государственное образовательное учреждение высшего профессионального образования "Южно-Уральский государственный университет" ГОУ ВПО "ЮУрГУ" | Method of measuring pressure |
| GB201500841D0 (en) * | 2014-01-17 | 2015-03-04 | Hamilton Sundstrand Corp | Strain gauge pressure sensor circuit with sensor disconnect detection |
| CN205210109U (en) * | 2015-10-10 | 2016-05-04 | 云南师范大学 | Novel wind speed tester |
| CN107782369A (en) * | 2017-09-15 | 2018-03-09 | 华侨大学 | A kind of shaft wind resistance detecting system |
| CN207570714U (en) * | 2017-12-01 | 2018-07-03 | 广东电网有限责任公司惠州供电局 | A kind of transformer cooler wind detection device |
| CN108088552A (en) * | 2018-01-31 | 2018-05-29 | 国网重庆市电力公司电力科学研究院 | Transmission line of electricity aero-vibration monitoring device calibrating installation under a kind of site environment |
| CN208887829U (en) * | 2018-08-29 | 2019-05-21 | 健芳电子科技(上海)有限公司 | A kind of wind-force wind pressure measuring meter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111323115A (en) * | 2020-03-11 | 2020-06-23 | 宁波奥克斯电气股份有限公司 | Method and system for testing abnormal sound of indoor unit of air conditioner |
| CN111323115B (en) * | 2020-03-11 | 2022-06-14 | 宁波奥克斯电气股份有限公司 | Method and system for testing abnormal sound of indoor unit of air conditioner |
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