CN2416506Y - Differential pressure dynamic wind speed measuring apparatus - Google Patents
Differential pressure dynamic wind speed measuring apparatus Download PDFInfo
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- CN2416506Y CN2416506Y CN 00226302 CN00226302U CN2416506Y CN 2416506 Y CN2416506 Y CN 2416506Y CN 00226302 CN00226302 CN 00226302 CN 00226302 U CN00226302 U CN 00226302U CN 2416506 Y CN2416506 Y CN 2416506Y
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- 230000003068 static effect Effects 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 9
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- 239000003990 capacitor Substances 0.000 description 19
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- 239000012530 fluid Substances 0.000 description 2
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- 239000002184 metal Substances 0.000 description 2
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Abstract
一种压差式动态风速测试装置,它包括1～8个风速探针、1～8个与风速探针相对应的放大及电流传输电路、1～8个与放大及电流传输电路相对应的电流电压转换电路、A/D及数字传输电路、电源电路及计算机,它具有成本低、动态响应速度快、操作方便等优点,可在风洞中用于测量风速。
A differential pressure dynamic wind speed testing device, which includes 1 to 8 wind speed probes, 1 to 8 amplification and current transmission circuits corresponding to the wind speed probes, and 1 to 8 amplification and current transmission circuits corresponding to the wind speed probes. Current and voltage conversion circuit, A/D and digital transmission circuit, power supply circuit and computer, it has the advantages of low cost, fast dynamic response speed, convenient operation, etc. It can be used to measure wind speed in wind tunnel.
Description
The utility model belongs to the speed technical field of measuring fluid, is specifically related to by measuring pressure reduction in the fluid.
Design for heavy construction, skyscraper, aircraft etc. all needs to do wind tunnel test, and the kinetic measurement of wind speed is a requisite measure wherein.At present the wind speed of measuring in the wind-tunnel mainly adopts the hot line wind speed tester, comes measuring wind by measuring the thermal change amount, and this surveying instrument uses a kind of special metal wire, and to its heating, the different wind speed different heat that can dissipate obtains wind speed according to this principle.Metal hot line wherein is very crisp, fragile, and the dynamic responding speed of this testing tool is too slow, and a whole set of measuring system cost is too high.
The purpose of this utility model is to overcome the shortcoming of above-mentioned wind speed tester, provides a kind of cost low, rapid dynamic response speed, easy to operate differential dynamic wind speed tester.
For achieving the above object, the solution that the utility model adopts is: it comprises 1～8 wind speed probe, and this wind speed probe can be experienced the dynamic and static pressure difference signal that flows through its surface wind speed, converts electric signal output to.It comprises 1～8 with corresponding amplification of wind speed probe and current delivery circuit, the give a dinner for a visitor from afar output terminal of fast probe of input end amplifies the electric signal of wind speed probe output, carries out exporting after the two-wire system current delivery again.It comprises that 1～8 is amplified and the current delivery circuit with the input termination of amplification and corresponding this circuit of current-to-voltage converting circuit of current delivery circuit, will amplify and the current signal of current delivery circuit output converts voltage signal output to.It comprises A/D and digital transmission circuit, input termination current-to-voltage converting circuit, and the voltage signal that current-to-voltage converting circuit is exported converts digital signal output to.It comprises power circuit, input termination external power supply, and the output termination is amplified and current delivery circuit, current-to-voltage converting circuit, A/D and digital transmission circuit, for above-mentioned three-circuit provides working power.It also comprises computing machine, and its serial port connects A/D and digital transmission circuit, and the digital signal of A/D and the output of digital transmission circuit is carried out data processing, dynamically demonstrates result of calculation, and A/D and digital transmission circuit are controlled.
Wind speed probe of the present utility model is: establish the plug, the other end that are processed with dynamic pressure pressure through hole at an end of housing and establish the wiring board that electronic component is housed, in housing, be provided with micro-pressure sensor, in housing, be provided with sealing block between micro-pressure sensor and the wiring board, on the housing between micro-pressure sensor and the sealing block, be processed with static pressure pressure through hole.
The aperture of the dynamic pressure pressure through hole of the utility model wind speed probe is 1～2mm, and static pressure pressure through hole has 4～8 even number holes, and its aperture is 0.5～1mm, and the housing that is arranged between micro-pressure sensor and the sealing block directly makes progress.
The utility model is compared with the hot line wind speed tester, has that cost is low, a rapid dynamic response speed, advantage such as easy to operate, can be used to measure wind speed in wind-tunnel.
Fig. 1 is an electrical principle block scheme of the present utility model.
Fig. 2 is the structural representation of the utility model wind speed probe.
Fig. 3 is amplification and the current delivery circuit diagram of an embodiment of the utility model.
Fig. 4 is the signal digitalized treatment circuit figure of an embodiment of the utility model.
The designer provides first embodiment of the utility model, adopts a wind speed probe, one to amplify in the present embodiment and current delivery circuit, a current-to-voltage converting circuit, connects and composes with power circuit, A/D and digital transmission circuit, computing machine.Below in conjunction with drawings and Examples the utility model is further described, but the utility model is not limited to these embodiment.
The wind speed probe is experienced the poor of the dynamic pressure of wind speed and static pressure in Fig. 1, convert electric signal to, output to and amplify and the current delivery circuit, power circuit provides direct supply to amplification and current delivery circuit, and provide working power for complete machine, amplification and current delivery circuit are done remote noiseless transmission after the electric signal of importing is converted into the two-wire system current signal, output to current-to-voltage converting circuit and be converted to voltage signal, output to A/D and digital transmission circuit then, carry out the A/D conversion, convert digital signal to, output to computing machine and carry out calculation process, demonstrate dynamic wind speed, computing machine sends command signal to A/D and digital transmission circuit.
In Fig. 2, the wind speed probe of present embodiment is made of housing 6, plug 7, micro-pressure sensor 2, wiring board 4, sealing block 5 connections.Left end in housing 6 is equipped with plug 7 right-hand members wiring board 4 is installed, on the wiring board 4 electronic component is installed, a side of plug 7 is equipped with micro-pressure sensor 2 in housing 6, the model of micro-pressure sensor 2 is between SMI5552 micro-pressure sensor 2 and the wiring board 4 sealing block 5 to be installed, on the housing 6 between micro-pressure sensor 2 and the sealing block 5, be processed with four static pressure pressure through holes 3 radially symmetrically, the aperture of static pressure pressure through hole 3 is 1mm, center line at plug 7 is processed with dynamic pressure pressure through hole 1, the aperture of dynamic pressure pressure through hole 1 is 1mm, micro-pressure sensor 2 is experienced wind-tunnel high speed air and is flow through the static pressure of wind speed detecting probe surface and the pressure difference signal of dynamic pressure, converts pressure difference signal to electric signal and outputs to amplification and current delivery circuit.
In Fig. 3, the amplification of present embodiment and current delivery circuit are connected and composed by integrated circuit AD693, R1, C1, C2, potentiometer P1.Normal phase input end 17 pin of integrated circuit AD693 give a dinner for a visitor from afar signal output negative terminal 1 pin of fast probe micro-pressure sensor 2 of signal output plus terminal 4 pin, inverting input 18 pin of fast probe micro-pressure sensor 2 of giving a dinner for a visitor from afar, the power end of the two termination micro-pressure sensors 2 of C1, the electric signal of the termination integrated circuit AD693 of C2 is exported the direct supply of 7 pin, another termination integrated circuit AD693 and is imported 9 pin, and reference voltage 14 pin, the other end and the adjustable end of the termination integrated circuit AD693 of potentiometer P1 are regulated 15 pin by the range that R1 meets integrated circuit AD693.Amplification and current delivery circuit amplify the electric signal of micro-pressure sensor 2 outputs, carry out the two-wire system current delivery again, output to current-to-voltage converting circuit.
In Fig. 4, the power circuit of present embodiment is connected and composed by power module HAS24-10-W, fuse FU, three-terminal regulator block 7805, three-terminal regulator block 7812, C11, C12, electrochemical capacitor E1～electrochemical capacitor E4, light emitting diode L1.The input end of power module HAS24-10-W connects the 220V alternating current by fuse FU, the input end of one output termination three-terminal regulator block 7812, the input end of another output termination three-terminal regulator block 7805, also have an output terminal to import 9 pin by the power supply that light emitting diode L1 meets amplification and current delivery circuit integrated circuit AD693, power module HAS24-10-W becomes the 24V direct current with the 220V alternating current, the output termination current-to-voltage converting circuit of three-terminal regulator block 7812, for this circuit provides 12V direct supply, the output termination A/D of three-terminal regulator block 7805 and digital transmission circuit, for this circuit provides 5V direct supply, whether light emitting diode L1 is used to indicate power circuit for amplifying and the current delivery circuit provides power supply, and its luminosity changes with the wind speed in the wind-tunnel.Electrochemical capacitor E2 is a filter capacitor before three-terminal regulator block 7812 voltage stabilizings, C11 and electrochemical capacitor E1 are the filter capacitor after three-terminal regulator block 7812 voltage stabilizings, E3 is a power module HAS24-10-W filter capacitor, C12 and electrochemical capacitor E3 are the filter capacitor before three-terminal regulator block 7805 voltage stabilizings, and electrochemical capacitor E4 is the filter capacitor after three-terminal regulator block 7805 voltage stabilizings.
The current-to-voltage converting circuit of present embodiment is connected and composed by operational amplifier TLV2264, potentiometer P2, and the normal phase input end of operational amplifier TLV2264 connects that the current signal of the end of potentiometer P2 and amplification and current delivery circuit integrated circuit AD693 is exported 7 pin, inverting input connects output terminal, output termination A/D and digital transmission circuit.Current-to-voltage converting circuit converts current signal to voltage signal and outputs to A/D and digital transmission circuit.
The A/D of present embodiment and digital transmission circuit are connected and composed by single-chip microcomputer 89C51, A/D converter MAX197, level translator MAX202, R2, oscillator XTAL, C3～C10, electrochemical capacitor E5～electrochemical capacitor E7.The analog quantity of A/D converter MAX197 is imported the output terminal that 16 pin meet current-to-voltage converting circuit operational amplifier TLV2264, data port D0～D7 and write control 3 pin and reading and control data port D0～D7 that 4 pin meet single-chip microcomputer 89C51 respectively and write control 16 pin and read to control 17 pin, EOC signal 24 pin and high low byte select signal 5 pin to connect 12 pin and 13 pin of single-chip microcomputer 89C51, electrochemical capacitor E6 and C8 are the filter capacitors of A/D converter MAX197+5V power supply, C7 is the filter capacitor of A/D converter MAX197 internal reference adjustable side, electrochemical capacitor E7 is the filter capacitor of A/D converter MAX197 internal reference, and the oscillator signal of single-chip microcomputer 89C51 input 18 connects the oscillatory circuit that is connected with C10 by oscillator XTAL and C9 with 19 pin, 9 pin that reset connect the reset circuit that electrochemical capacitor E5 is connected with R2, send the digital level that 11 pin meet level translator MAX202 and import 10 pin, receive the digital level that 10 pin meet level translator MAX202 and export 9 pin.C3, C4, C5, C6 are the required external capacitive of level translator MAX202, and level translator MAX202 is used for digital level is converted into the RS232 level, and RS232 is converted to digital signal.A/D converter MAX197 will convert digital signal to from the voltage signal of current-to-voltage converting circuit, output to single-chip microcomputer 89C51, single-chip microcomputer 89C51 sends 11 human hair combing wastes by serial immediately and send data, send into the RS232 serial port of computing machine via socket 4PIN, computing machine can carry out data reduction and Real time dynamic display goes out wind speed, computing machine is by the RS232 serial port, via socket 4PIN to single-chip microcomputer 89C51 transmitting control commands.
The designer has provided second embodiment of the utility model, and present embodiment adopts four wind speed probes, four to amplify and current delivery circuit, four current-to-voltage converting circuits, connects and composes with power circuit, A/D and digital transmission circuit, computing machine.The structure of each wind speed probe, amplification and current delivery circuit, current-to-voltage converting circuit and the annexation of components and parts are identical with first embodiment, four are amplified and the input end of current delivery circuit connects the output terminal of four wind speed probes, the input end that output terminal connects four current-to-voltage converting circuits respectively, 16～19 pin of the output termination A/D of four current-to-voltage converting circuits and digital transmission circuit A/D converter MAX197 respectively.The annexation of other circuit and foregoing circuit and first embodiment are identical.
The designer has provided the 3rd embodiment of the utility model, and present embodiment adopts eight wind speed probes, and eight are amplified and current delivery circuit, eight current-to-voltage converting circuits, connect and compose with power circuit, A/D and digital transmission circuit, computing machine.The structure of each wind speed probe, current-to-voltage converting circuit and the annexation of components and parts are identical with first embodiment.Eight are amplified and the input end of current delivery circuit connects the output terminal of eight probes, the input end that output terminal connects eight current-to-voltage converting circuits respectively, 16～23 pin of the output termination A/D of eight current-to-voltage converting circuits and digital transmission circuit A/D converter MAX197 respectively.Other circuit and identical with annexation and first embodiment of foregoing circuit.
The designer has provided the 4th embodiment of the utility model, and in the present embodiment, the aperture of the dynamic pressure pressure through hole 1 of wind speed probe is 2mm, processes 8 static pressure pressure through holes 3 on housing 6 symmetrically, and the aperture of static pressure pressure through hole 3 is 0.5mm.The annexation of other circuit elements device, circuit are identical with first embodiment with the annexation of circuit.
According to above-mentioned principle, also can design the differential dynamic wind speed proving installation of another concrete structure.
Claims (3)
1. differential dynamic wind speed proving installation is characterized in that it comprises:
1～8 wind speed probe, this wind speed probe can be experienced the dynamic and static pressure difference signal that flows through its surface wind speed, converts electric signal output to;
1～8 with corresponding amplification of wind speed probe and current delivery circuit, the give a dinner for a visitor from afar output terminal of fast probe of input end amplifies the electric signal of wind speed probe output, carries out exporting after the two-wire system current delivery again;
1～8 input termination with amplification and corresponding this circuit of current-to-voltage converting circuit of current delivery circuit is amplified and the current delivery circuit, converts the current signal that amplifies and the current delivery circuit is exported to voltage signal output;
A/D and digital transmission circuit, input termination current-to-voltage converting circuit, the voltage signal that current-to-voltage converting circuit is exported converts digital signal output to;
It comprises power circuit, input termination external power supply, and the output termination is amplified and current delivery circuit, current-to-voltage converting circuit, A/D and digital transmission circuit, for above-mentioned three-circuit provides working power;
It also comprises computing machine, and its serial port connects A/D and digital transmission circuit, and the digital signal of A/D and the output of digital transmission circuit is carried out data processing, dynamically demonstrates result of calculation, and A/D and digital transmission circuit are controlled.
2. according to the described differential dynamic wind speed proving installation of claim 1, it is characterized in that said wind speed probe is: establish the plug (7), the other end that are processed with dynamic pressure pressure through hole (1) at an end of housing (6) and establish the wiring board (4) that electronic component is housed, in housing (6), be provided with micro-pressure sensor (2), in housing (6), be provided with sealing block (5) between the micro-pressure sensor (2) and the circuit utmost point (4), on the housing (6) between micro-pressure sensor (2) and the sealing block (5), be processed with static pressure pressure through hole (3).
3. according to the described differential dynamic wind speed proving installation of claim 2, it is characterized in that: the aperture of said dynamic pressure pressure through hole (1) is 1～2mm; Said static pressure pressure through hole (3) has 4～8 even number holes, and its aperture is 0.5～1mm, and housing (6) footpath that is arranged between micro-pressure sensor (2) and the sealing block (5) makes progress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00226302 CN2416506Y (en) | 2000-04-19 | 2000-04-19 | Differential pressure dynamic wind speed measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00226302 CN2416506Y (en) | 2000-04-19 | 2000-04-19 | Differential pressure dynamic wind speed measuring apparatus |
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| CN2416506Y true CN2416506Y (en) | 2001-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00226302 Expired - Fee Related CN2416506Y (en) | 2000-04-19 | 2000-04-19 | Differential pressure dynamic wind speed measuring apparatus |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100356176C (en) * | 2004-03-15 | 2007-12-19 | 清华大学 | Miniature low-speed airspeed meter for miniature aircraft |
| CN100487460C (en) * | 2005-04-13 | 2009-05-13 | 江苏三恒科技集团有限公司 | Wind speed measuring device and mine wind speed detecting method |
| CN100498341C (en) * | 2004-01-15 | 2009-06-10 | 徐州发电厂 | Automatic test system for cold test of boiler and test method thereof |
| CN101650244B (en) * | 2008-08-14 | 2012-01-04 | 天津市电力公司 | Portable multipath wind pressure and wind speed tester |
| CN104634995A (en) * | 2014-12-12 | 2015-05-20 | 歌尔声学股份有限公司 | Method and equipment for testing wind speed |
| CN105258914A (en) * | 2015-11-13 | 2016-01-20 | 中国空气动力研究与发展中心低速空气动力研究所 | Low-speed wind tunnel flow field test micropressure measurement system |
| CN105842476A (en) * | 2015-01-30 | 2016-08-10 | 英飞凌科技股份有限公司 | System and method for a wind speed meter |
| CN106568987A (en) * | 2016-11-09 | 2017-04-19 | 华南农业大学 | Zero point adjustable dynamic pressure type wind speed measuring device |
| CN109406825A (en) * | 2018-11-26 | 2019-03-01 | 华南理工大学 | A kind of two-D wind speed wind direction measuring device based on pressure difference |
| CN114235071A (en) * | 2021-12-29 | 2022-03-25 | 觉隆传感技术(深圳)有限公司 | Ultrasonic gas mass flow meter for natural gas pipeline network |
-
2000
- 2000-04-19 CN CN 00226302 patent/CN2416506Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100498341C (en) * | 2004-01-15 | 2009-06-10 | 徐州发电厂 | Automatic test system for cold test of boiler and test method thereof |
| CN100356176C (en) * | 2004-03-15 | 2007-12-19 | 清华大学 | Miniature low-speed airspeed meter for miniature aircraft |
| CN100487460C (en) * | 2005-04-13 | 2009-05-13 | 江苏三恒科技集团有限公司 | Wind speed measuring device and mine wind speed detecting method |
| CN101650244B (en) * | 2008-08-14 | 2012-01-04 | 天津市电力公司 | Portable multipath wind pressure and wind speed tester |
| WO2016090897A1 (en) * | 2014-12-12 | 2016-06-16 | 歌尔声学股份有限公司 | Method and device for testing wind speed |
| CN104634995A (en) * | 2014-12-12 | 2015-05-20 | 歌尔声学股份有限公司 | Method and equipment for testing wind speed |
| CN105842476A (en) * | 2015-01-30 | 2016-08-10 | 英飞凌科技股份有限公司 | System and method for a wind speed meter |
| CN105258914A (en) * | 2015-11-13 | 2016-01-20 | 中国空气动力研究与发展中心低速空气动力研究所 | Low-speed wind tunnel flow field test micropressure measurement system |
| CN105258914B (en) * | 2015-11-13 | 2019-01-08 | 中国空气动力研究与发展中心低速空气动力研究所 | A kind of low-speed wind tunnel flow field test micro-pressure measurement system |
| CN106568987A (en) * | 2016-11-09 | 2017-04-19 | 华南农业大学 | Zero point adjustable dynamic pressure type wind speed measuring device |
| CN106568987B (en) * | 2016-11-09 | 2019-03-08 | 华南农业大学 | A kind of adjustable dynamic pressure type wind speed measuring device of zero point |
| CN109406825A (en) * | 2018-11-26 | 2019-03-01 | 华南理工大学 | A kind of two-D wind speed wind direction measuring device based on pressure difference |
| CN114235071A (en) * | 2021-12-29 | 2022-03-25 | 觉隆传感技术(深圳)有限公司 | Ultrasonic gas mass flow meter for natural gas pipeline network |
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