CN104090124A - Wind power ultrasonic anemorumbometer and anti-freezing method thereof - Google Patents
Wind power ultrasonic anemorumbometer and anti-freezing method thereof Download PDFInfo
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- CN104090124A CN104090124A CN201410317074.8A CN201410317074A CN104090124A CN 104090124 A CN104090124 A CN 104090124A CN 201410317074 A CN201410317074 A CN 201410317074A CN 104090124 A CN104090124 A CN 104090124A
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- ultrasonic transducer
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Abstract
The invention provides a wind power ultrasonic anemorumbometer which is provided with an ultrasonic transducer installation cover and comprises a signal processor, a heater, a first ultrasonic transducer, a second ultrasonic transducer, a transducer driving and signal conditioning circuit, a set of PT100 temperature sensors and a PT100 temperature sensor signal conditioning circuit. The first ultrasonic transducer and the second ultrasonic transducer are installed on the ultrasonic transducer installation cover. Because two different control modes are adopted and can be switched over according to external working conditions, the method can be suitable for different working conditions that the ultrasonic anemorumbometer cannot operate normally due to the fact that the appearance of the ultrasonic anemorumbometer is severely iced, icing does not occur or a little of accumulated ice but normal operation of the ultrasonic anemorumbometer is not influenced, different modes are applied to different working conditions, and the problem that a single anti-freezing mode cannot adapt to multiple working conditions is solved. In addition, failure modes of the two methods are different, so that the failure rate is lowered.
Description
Technical field
The present invention relates to ultrasonic wind speed and direction field tests, relate in particular to a kind of anti-ice that is applied to the ultrasonic aerovane under extreme severe cold weather and freeze method.
Background technology
With ultrasonic aerovane with motion wearing terrain not, do not need the advantages such as periodic calibration, measuring accuracy is high, the life-span is long, be widely used in wind-power electricity generation industry, but China is vast in territory, the extreme cold in winter on the ground such as Inner Mongol, North China northeastward,, come calculation of wind speed and wind direction and ultrasonic aerovane is launched by transducer and accept hyperacoustic mode, transducer face is easily frozen and was lost efficacy in severe cold, causes wind-powered electricity generation unit power generation loss.In wind-powered electricity generation industry, often have prophylactic repair in addition, the situations such as shutdown of rationing the power supply; make ultrasonic aerovane power-off; in cold environment, will cause serious accumulated ice to freeze; thereby after restoring electricity, because can not working, ultrasonic transducer cause ultrasonic aerovane cannot detect temperature and the unlatching of uncontrollable well heater; thereby cause ultrasonic aerovane ice-melt to cause global failure, make the wind turbine group leader time can not recover generating.
The anti-ice that is necessary to develop a kind of wind-powered electricity generation ultrasonic aerovane is frozen method and is stopped this failure conditions.
Summary of the invention
The object of the invention is the defect existing for above-mentioned background technology, what provide a kind ofly can effectively solve the anti-ice of ultrasonic aerovane under severe cold weather and freeze the ultrasonic aerovane of method and application the method.
For achieving the above object, a kind of wind-powered electricity generation of one of the present invention freezes method by the anti-ice of ultrasonic aerovane, and the method comprises:
Air themperature detection-heating-pattern switching controls step, further comprises,
Step S1: signal processor sends to be adjusted signal and successively alternately sends out mutually ultrasonic pulse signal and calculate the time t that is sent out ultrasonic signal and received to the second ultrasonic transducer ultrasonic pulse signal by the first ultrasonic transducer to the other side to the second ultrasonic transducer via transducer drive-signal conditioning circuit control the first ultrasonic transducer
1, after completing, send ultrasonic pulse signal and calculate the time that sends out ultrasonic signal and receive to the first ultrasonic transducer ultrasonic pulse signal by the second ultrasonic transducer to the first ultrasonic transducer by the second ultrasonic transducer
t 2 , complete after signal processor t relatively respectively
1, t
2whether be greater than the maximal value t of setting, wherein t is the time, as t
1, t
2be greater than the maximal value t of setting, judge that air themperature detection-heating-pattern switching controls step is infeasible, carry out casing surface temperature detection-heating-pattern switching controls step, as t
1, t
2be less than the maximal value t of setting, continue execution step S2, step S3;
Step S2: signal processor is according to t
1, ", L, t
1=L/ (c+v), t
2=L/ (c+v) calculates the velocity of propagation c=0.5L/[(1/t of ultrasonic pulse signal in air dielectric
1)+(1/t
2)], wherein, L is the spacing distance L between the first ultrasonic transducer and the second ultrasonic transducer, and L is invariable, v, for flowing through ultrasonic aerovane wind speed, calculates air dielectric temperature T by c=331.3+0.606T
a=(331.3-c)/0.606, wherein, T is Celsius thermometric scale;
Step S3: signal processor judges air dielectric temperature T
awhether lower than the well heater open temp T setting
1, as lower than, control heater heating, as higher than not starting well heater;
Casing surface temperature detection-heating-pattern switching controls step,
Step S4: signal processor control PT100 temperature signal regulation circuit sends steady current I to the PT100 temperature sensor being embedded in ultrasonic aerovane, after conversion, send voltage U to signal processor, further convert and draw casing surface temperature T by signal processor
k;
Step S5: signal processor judges casing surface temperature T
kwhether lower than well heater open temp T
2, as sent heating order to well heater lower than, signal processor, well heater is opened heating, termination routine.
Further, in step S1, t
1, t
2start time point and stand-by time point by signal processor record.
Further, start time point sends the time point of control signal and electric impulse signal for transducer drive-signal conditioning circuit receives signal processor, stand-by time point is the time point that the first ultrasonic transducer or the second ultrasonic transducer start to receive ultrasonic pulse signal.
Further, T
1﹤ T
2.
A kind of wind-powered electricity generation ultrasonic aerovane of two of the present invention, there is a ultrasonic transducer mounting cover, it comprises signal processor, well heater, one first ultrasonic transducer, one second ultrasonic transducer, transducer drive-signal conditioning circuit, one group of PT100 temperature sensor, a PT100 temperature sensor signal modulate circuit, the first ultrasonic transducer and the second ultrasonic transducer are arranged on ultrasonic transducer mounting cover.
Further, the installation site of the installation site of the first ultrasonic transducer and the second ultrasonic transducer has a relation one to one on the ultrasonic transducer mounting cover of ultrasonic aerovane.
Further, the installation site of the first ultrasonic transducer and the second ultrasonic transducer installation site are on the concentrically ringed circumference taking described mounting cover center as the center of circle, and the installation site of the first ultrasonic transducer has mutually corresponding one by one with the second ultrasonic transducer installation site.
Further, PT100 temperature sensor is embedded in the support column of ultrasonic aerovane survey air port.
In sum, a kind of wind-powered electricity generation provided by the invention freezes method owing to adopting two different temperature detecting-heating control models by the anti-ice of ultrasonic aerovane, and two control models can selectively be switched mutually according to the outside work information obtaining, the method not only causes ultrasonic aerovane normally to move applicable to the serious accumulated ice of ultrasonic aerovane appearance and without accumulated ice or a small amount of accumulated ice but do not affect the different working conditions of the normal operation of ultrasonic aerovane, and different mode is suitable for different working conditions, solve the situation that single anti-ice pattern cannot adapt to various working condition, the failure mode difference of two kinds of methods in method in addition, reduce chance of failure.
Brief description of the drawings
Fig. 1 is the partial schematic diagram that the anti-ice of a kind of wind-powered electricity generation of the present invention ultrasonic aerovane is frozen one of applied ultrasonic aerovane of method.
Fig. 2 is another schematic perspective view that the anti-ice of a kind of wind-powered electricity generation of the present invention ultrasonic aerovane is frozen one of applied ultrasonic aerovane of method.
Fig. 3 is the control structure schematic diagram that the anti-ice of a kind of wind-powered electricity generation of application the present invention ultrasonic aerovane is frozen the anemoclinograph of method.
Embodiment
By describing technology contents of the present invention, structural attitude in detail, being reached object and effect, below hereby exemplify embodiment and coordinate accompanying drawing to be explained in detail.
Refer to Fig. 1, Fig. 2 and Fig. 3, a kind of wind-powered electricity generation of the present invention freezes the applied ultrasonic aerovane product of method and relevant similar products by the anti-ice of ultrasonic aerovane, and specifically to refer to the patent No. be the disclosed ultrasonic aerovane of ZL2013302395187.
A kind of wind-powered electricity generation of the present invention freezes the applied ultrasonic aerovane of method by the anti-ice of ultrasonic aerovane, have a ultrasonic transducer mounting cover, this ultrasonic aerovane 100 comprises: the first ultrasonic transducer 201, that signal processor 102, well heater 101, are installed on 0 ° of direction be installed on 180 ° of directions the second ultrasonic transducer 202, transducer drive-signal conditioning circuit 203, one group be embedded in ultrasonic aerovane and survey PT100 temperature sensor 301, the PT100 temperature sensor signal modulate circuit 302 in the support column of air port.
The first ultrasonic transducer 201 and the second ultrasonic transducer 202 are arranged on ultrasonic transducer mounting cover.
The installation site of the installation site of the first ultrasonic transducer 201 and the second ultrasonic transducer 202 has a relation one to one on the ultrasonic transducer mounting cover of ultrasonic aerovane 100, the installation site of the first ultrasonic transducer 201 and the second ultrasonic transducer 202 installation sites are on the concentrically ringed circumference taking described mounting cover center as the center of circle, and the installation site of the first ultrasonic transducer 201 is mutually corresponding one by one with the second ultrasonic transducer 202 installation sites.
Particularly, the first ultrasonic transducer 201 is positioned at 0 ° of direction of mounting cover, and the second ultrasonic transducer 202 is positioned at 180 ° of directions.
PT100 temperature sensor is embedded in ultrasonic aerovane and surveys in the support column of air port.
Wind-powered electricity generation freezes a method by the anti-ice of ultrasonic aerovane,
Air themperature detection-Jia heat control step, further comprises,
Step S1: signal processor 102 sends to adjust signal and control the first ultrasonic transducer 201 via transducer drive-signal conditioning circuit 203 and successively alternately sends mutually ultrasonic pulse signal and calculate the time t that is sent out another ultrasonic transducer 202 of ultrasonic signal to the second and received ultrasonic pulse signal by the first ultrasonic transducer 201 to the other side to the second ultrasonic transducer 202
1after completing, send ultrasonic pulse signal and calculate the time t that sends out ultrasonic signal and receive to the first ultrasonic transducer 201 ultrasonic pulse signal by the second ultrasonic transducer 202 to the first ultrasonic transducer 201 by the second ultrasonic transducer 202
2, complete after signal processor 102 t relatively respectively
1, t
2whether be greater than the maximal value t of setting, wherein t is the time, as t
1, t
2be greater than the maximal value t of setting, judge that air themperature detection-Jia heat control step is infeasible, carry out casing surface temperature detection-Jia heat control step, as t
1, t
2be less than the maximal value t of setting, continue execution step S2, step S3.
In step S1, t
1, t
2start time point and stand-by time point by signal processor 102 records, start time point sends the time point of control signal and electric impulse signal for transducer drive-signal conditioning circuit 203 receives signal processor 102, stand-by time point is the time point that the first ultrasonic transducer 201 or the second ultrasonic transducer 202 start to receive ultrasonic pulse signal.
Particularly, signal processor 102 sends control signal and electric impulse signal to transducer drive-signal conditioning circuit 203, and transducer drive-signal conditioning circuit 203 is adjusted into be launched ultrasonic pulse signal, reception and nurse one's health the second ultrasonic transducer 202 to the second ultrasonic transducer 202 by the first ultrasonic transducer 201 and receives ultrasonic pulse signal; And feed back signal to signal processor 102, time span t when signal processor 102 calculates ultrasonic pulse signal that the first ultrasonic transducer 201 sends and starts to receive ultrasonic pulse signal and finish to the second ultrasonic transducer 202
1;
Signal processor 102 sends control signal and electric impulse signal to transducer drive-signal conditioning circuit 203, transducer drive-signal conditioning circuit 203 is adjusted into by the second ultrasonic transducer 202 launches ultrasonic pulse signal to the first ultrasonic transducer 201, receive and nurse one's health the first ultrasonic transducer 201 and receive ultrasonic pulse signal, and the signal that feedback has received is to signal processor 102, time span t when signal processor 102 calculates the second ultrasonic transducer 202 and sends ultrasonic pulse signal and start to receive ultrasonic pulse signal and finish to the first ultrasonic transducer 201
2.
Step S2: signal processor 102 is according to t
1, t
2, L, t
1=L/ (c+v), t
2=L/ (c+v) calculates the velocity of propagation c=0.5L/[(1/t of ultrasonic pulse signal in air dielectric
1)+(1/t
2)], wherein, the spacing distance L between L the first ultrasonic transducer 201 and the second ultrasonic transducer 202, and L is invariable, calculates air dielectric temperature T by c=331.3+0.606T
a=(331.3-c)/0.606, wherein, T is Celsius thermometric scale;
Particularly, owing to the first ultrasonic transducer 201 and the second ultrasonic transducer 202 installation sites fixing, therefore the spacing distance L between the first ultrasonic transducer 201 and the second ultrasonic transducer 202 is invariable.In addition, a moment that particular pole is of short duration, the rate of change of blowing over the wind speed v between the first ultrasonic transducer 201 and the first ultrasonic transducer 202 is minimum, thus can be left in the basket, in like manner, air dielectric temperature T
arate of change also can be uncared-for.Setting the velocity of propagation of ultrasonic pulse signal in air dielectric is c, can draw following relation:
t
1＝L/(c+v) (1)
t
2＝L/(c+v) (2)
According to (1), (2) two formulas, can derive the velocity of propagation c in air dielectric
c＝0.5L/[(1/t
1)+(1/t
2)]
As can be seen here, according to t
1and t
2, can calculate the velocity of propagation of current ultrasonic pulse signal in current air dielectric.
The formula of the velocity of propagation c according to sound in air dielectric and air dielectric temperature T:
C=331.3+0.606T, wherein, T is Celsius thermometric scale.
Therefore signal processor 102 passes through t
1, t
2calculate air dielectric temperature T with known quantity L
a.
Step S3: signal processor 102 judges air dielectric temperature T
awhether lower than the well heater open temp T setting
1, as lower than, control heater 101 heats, as higher than not starting well heater;
Signal processor 102 is according to air dielectric temperature T
asituation heater 101: especially when air dielectric temperature T
alower than setting well heater open temp T
1time, signal processor 102 sends and opens order to well heater 101, and well heater 101 is opened heating, prevents from freezing.
If at least one has frozen the first ultrasonic transducer 201 and the second ultrasonic transducer 202 or corrupted, as frozen or corrupted, to cause the ultrasonic pulse signal between two ultrasonic transducers cannot transmit and receive mutually ultrasonic signal, there is no the transmission of ultrasonic signal even between the two at all, in these two kinds of situations, set time of reception and be longer than the maximal value t of setting, i.e. t
1, t
2be greater than the maximal value t of setting, signal processor 102 will judge that air themperature detection method-Jia heat control step will no longer can use, and will call casing surface temperature detection-Jia heat control step.
Casing surface temperature detection-Jia heat control step,
Step S4: signal processor 102 is controlled PT100 temperature signal regulation circuit 302 and sent steady current I to the PT100 temperature sensor 301 being embedded in ultrasonic aerovane, after conversion, send voltage U to signal processor 102, further convert and draw casing surface temperature T by signal processor 102
k;
Casing surface temperature detection method-Jia heat control step is utilized one group of PT100 (platinum resistance thermometer sensor) temperature sensor 301 being embedded in the support column of ultrasonic aerovane survey air port, because PT100 temperature sensor is that a kind of temperature becomes known rules variation particular resistor with resistance value (is that those of ordinary skill in the art are known about the principle by PT100 temperature sensor testing temperature, do not repeat at this), PT100 temperature signal regulation circuit 302 is by sending the mode of known constant current I to PT100 temperature sensor 301, the resistance value R of PT100 temperature sensor 301 is converted to magnitude of voltage U, and this magnitude of voltage U is sent to signal processor 102.
Signal processor 102 receives the voltage signal U that PT100 temperature signal regulation circuit 302 sends, and according to ohm law, can obtain the resistance R of PT100.Because resistance and the temperature of PT100 have known rules, therefore signal processor 102 can, according to the resistance value R that is embedded in the PT100 temperature sensor 301 in ultrasonic aerovane, further calculate casing surface temperature T
k.
Step S5: signal processor 102 judges casing surface temperature T
kwhether lower than well heater open temp T
2as lower than, signal processor 102 sends heating order to well heater 101, well heater 101 is opened heating, and termination routine melts accumulated ice, simultaneously, first, second ultrasonic transducer of signal processor control is sent out mutually and is received ultrasonic pulse signal each other, as sent out mutually and receive each other, and t
1, t
2be less than the maximal value t of setting, signal processor 102 will judge that air themperature detection method 200 will recover available, will no longer call casing surface temperature detection method.
Open after heating a period of time when well heater 101, the accumulated ice that accumulates in the first ultrasonic transducer 201 and the second ultrasonic transducer 202 melts.Now, in the first ultrasonic transducer 201 and the normal situation of the second ultrasonic transducer 202, ultrasonic pulse signal can effectively be transmitted in air dielectric, and is received in turn by first, second ultrasonic transducer 201,202, above described t
1, t
2be less than the maximal value t of setting, signal processor 102 will judge that air themperature detection-Jia heat control step will recover available, will no longer call casing surface temperature detection-Jia heat control step.
Particularly, T
1﹤ T
2.
In sum, a kind of wind-powered electricity generation provided by the invention freezes method owing to adopting two different temperature detecting-heating control models by the anti-ice of ultrasonic aerovane, and two control models can selectively be switched mutually according to outside operating mode (temperature) information, the method not only causes ultrasonic aerovane normally to move applicable to the serious accumulated ice of ultrasonic aerovane appearance and without accumulated ice or a small amount of accumulated ice but do not affect the different working conditions of the normal operation of ultrasonic aerovane, and different mode is suitable for different operating modes (temperature) condition, solve the situation that single anti-ice pattern cannot adapt to various working condition, the failure mode difference of two kinds of methods in method in addition, reduce chance of failure.
Above-described technical scheme is only frozen the preferred embodiment of method for a kind of wind-powered electricity generation of the present invention by the anti-ice of ultrasonic aerovane, any freezing by the anti-ice of ultrasonic aerovane at wind-powered electricity generation of the present invention within the equivalent transformation done on method basis or replacement be included in the scope of claim of this patent.
Claims (8)
1. wind-powered electricity generation freezes a method by the anti-ice of ultrasonic aerovane, comprising:
Air themperature detection-heating-pattern switching controls step, further comprises,
Step S1: signal processor sends to be adjusted signal and successively alternately sends out mutually ultrasonic pulse signal and calculate the time t that is sent out ultrasonic signal and received to the second ultrasonic transducer ultrasonic pulse signal by the first ultrasonic transducer to the other side via transducer drive-signal conditioning circuit control the first ultrasonic transducer, the second ultrasonic transducer
1, after completing, send ultrasonic pulse signal and calculate the time t that sends out ultrasonic signal and receive to the first ultrasonic transducer ultrasonic pulse signal by the second ultrasonic transducer to the first ultrasonic transducer by the second ultrasonic transducer
2, complete after signal processor t relatively respectively
1, t
2whether be greater than the maximal value t of setting, wherein t is the time, as t
1, t
2be greater than the maximal value t of setting, judge that air themperature detection-heating-pattern switching controls step is infeasible, carry out casing surface temperature detection-heating-pattern switching controls step, as t
1, t
2be less than the maximal value t of setting, continue execution step S2, step S3;
Step S2: signal processor is according to t
1, t
2, t
1=L/ (c+v), t
2=L/ (c+v) calculates the velocity of propagation c=0.5L/[(1/t of ultrasonic pulse signal in air dielectric
1)+(1/t
2)], wherein, L is the spacing distance L between the first ultrasonic transducer and the second ultrasonic transducer, and L is invariable, v is the wind speed that flows through ultrasonic aerovane, calculates air dielectric temperature T by c=331.3+0.606T
a=(331.3-c)/0.606, wherein, T is Celsius thermometric scale;
Step S3: signal processor judges air dielectric temperature T
awhether lower than the well heater open temp T setting
1, as lower than, control heater heating, as higher than not starting well heater;
Casing surface temperature detection-heating-pattern switching controls step,
Step S4: signal processor control PT100 temperature signal regulation circuit sends steady current I to the PT100 temperature sensor being embedded in ultrasonic aerovane, after conversion, send voltage U to signal processor, further convert and draw casing surface temperature T by signal processor
k;
Step S5: signal processor judges casing surface temperature T
kwhether lower than well heater open temp T
2, as sent heating order to well heater lower than, signal processor, well heater is opened heating, termination routine.
2. a kind of wind-powered electricity generation according to claim 1 freezes method by the anti-ice of ultrasonic aerovane, it is characterized in that: in step S1, and t
1, t
2start time point and stand-by time point by signal processor record.
3. a kind of wind-powered electricity generation according to claim 2 freezes method by the anti-ice of ultrasonic aerovane, it is characterized in that: start time point sends the time point of control signal and electric impulse signal for transducer drive-signal conditioning circuit receives signal processor, stand-by time point is the time point that the first ultrasonic transducer or the second ultrasonic transducer start to receive ultrasonic pulse signal.
4. a kind of wind-powered electricity generation according to claim 3 freezes method by the anti-ice of ultrasonic aerovane, it is characterized in that: T
1﹤ T
2.
5. a wind-powered electricity generation ultrasonic aerovane, there is a ultrasonic transducer mounting cover, it comprises signal processor, well heater, it is characterized in that: one first ultrasonic transducer, one second ultrasonic transducer, transducer drive-signal conditioning circuit, one group of PT100 temperature sensor, a PT100 temperature sensor signal modulate circuit, the first ultrasonic transducer and the second ultrasonic transducer are arranged on ultrasonic transducer mounting cover.
6. a kind of wind-powered electricity generation ultrasonic aerovane according to claim 5, is characterized in that: the installation site of the installation site of the first ultrasonic transducer and the second ultrasonic transducer has a relation one to one on the ultrasonic transducer mounting cover of ultrasonic aerovane.
7. a kind of wind-powered electricity generation ultrasonic aerovane according to claim 6, it is characterized in that: the installation site of the first ultrasonic transducer and the second ultrasonic transducer installation site are on the concentrically ringed circumference taking described mounting cover center as the center of circle, and the installation site of the first ultrasonic transducer has mutually corresponding one by one with the second ultrasonic transducer installation site.
8. a kind of wind-powered electricity generation ultrasonic aerovane according to claim 7, is characterized in that: PT100 temperature sensor is embedded in ultrasonic aerovane and surveys in the support column of air port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410317074.8A CN104090124A (en) | 2014-07-04 | 2014-07-04 | Wind power ultrasonic anemorumbometer and anti-freezing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410317074.8A CN104090124A (en) | 2014-07-04 | 2014-07-04 | Wind power ultrasonic anemorumbometer and anti-freezing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104090124A true CN104090124A (en) | 2014-10-08 |
Family
ID=51637855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410317074.8A Pending CN104090124A (en) | 2014-07-04 | 2014-07-04 | Wind power ultrasonic anemorumbometer and anti-freezing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897924A (en) * | 2015-04-30 | 2015-09-09 | 中国科学技术大学 | Two-dimensional reflection type supersonic wave wind speed anemoscope and measuring method |
| CN113109589A (en) * | 2021-04-07 | 2021-07-13 | 山东仁科测控技术有限公司 | Shell structure of ultrasonic anemometer |
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| CN103018482A (en) * | 2012-12-07 | 2013-04-03 | 辽宁工程技术大学 | Device and method for detecting mining intelligent roadway based on wind speed time difference |
| CN202903820U (en) * | 2012-10-31 | 2013-04-24 | 大连金天科技发展有限公司 | Self-calibrating ultrasonic wind speed measuring device |
| CN203224509U (en) * | 2013-04-08 | 2013-10-02 | 成都赛腾自动化工程有限公司 | Temperature-controlled ultrasonic wind speedometer for wind turbine |
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| CN201159741Y (en) * | 2008-03-11 | 2008-12-03 | 钟永勇 | Ultrasonic wave wind speed indicator |
| CN101750516A (en) * | 2009-12-24 | 2010-06-23 | 北京汉能华科技有限公司 | Anemometer and method for measuring wind speed and wind direction |
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| CN104897924A (en) * | 2015-04-30 | 2015-09-09 | 中国科学技术大学 | Two-dimensional reflection type supersonic wave wind speed anemoscope and measuring method |
| CN104897924B (en) * | 2015-04-30 | 2017-11-07 | 中国科学技术大学 | A kind of two-dimentional reflecting type ultrasonic anemoclinograph and measuring method |
| CN113109589A (en) * | 2021-04-07 | 2021-07-13 | 山东仁科测控技术有限公司 | Shell structure of ultrasonic anemometer |
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Application publication date: 20141008 |
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