CN206038716U - Ultrasonic wave two dimension wind direction air velocity transducer - Google Patents

Ultrasonic wave two dimension wind direction air velocity transducer Download PDF

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Publication number
CN206038716U
CN206038716U CN201620857472.3U CN201620857472U CN206038716U CN 206038716 U CN206038716 U CN 206038716U CN 201620857472 U CN201620857472 U CN 201620857472U CN 206038716 U CN206038716 U CN 206038716U
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probe
ultrasonic
wind
measurement
ultrasonic probe
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王金凯
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Beijing Yugen Technology Co Ltd
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Beijing Yugen Technology Co Ltd
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Abstract

The utility model relates to an ultrasonic wave two dimension wind direction air velocity transducer, it includes: a sensor body, it is first to ultrasonic probe, including an ultrasonic probe and the 2nd ultrasonic probe, the two free end of locating the probe connection pole to direction of measurement on measuring plane is just to setting up, and the second is to ultrasonic probe, including the 3rd ultrasonic probe and fourth ultrasonic probe, and the two free end of locating the probe connection pole, and just to setting up, the 2nd direction of measurement and a direction of measurement have predetermined contained angle alpha to last the 2nd direction of measurement of measuring plane. The utility model discloses an ultrasonic wave two dimension wind direction air velocity transducer, it can prevent the influence that the accuracy was measured to the wind speed to the vortex, has higher interference immunity, helps improving measuring result's authenticity and accuracy.

Description

A kind of ultrasonic two-dimensional wind direction and wind velocity sensor
Technical field
This utility model is related to a kind of non-contact type ultrasonic measurement plane wind direction and wind velocity device, especially can simultaneously with In high precision, in the instantaneous plane of wide range measure wind direction and the ultrasonic two-dimensional wind direction and wind velocity sensor of air speed value.
Background technology
Wind direction and wind velocity measurement is that meteorological, agricultural and industrial circle need one of important parameter of measurement, at present, measures wind direction The mode of wind speed is mainly Mechanical measurement, and its presence needs that threshold wind velocity is big, mechanical wear big, there is instantaneous wind speed inertia to miss Difference etc. drawback, cause its to less than threshold wind velocity less wind speed cannot measure, measurement data is also difficult to embody the change of wind speed Change.
Drawbacks described above is that those skilled in the art expect to overcome.
Utility model content
(1) technical problem to be solved
In order to solve the problems referred to above of prior art, this utility model provides a kind of ultrasonic two-dimensional wind direction and wind velocity sensing Device, which can prevent from being vortexed the impact to measuring wind speed accuracy, with higher anti-interference, and with higher resolution Lower error rate.
(2) technical scheme
In order to achieve the above object, the main technical schemes that this utility model is adopted include:
A kind of ultrasonic two-dimensional wind direction and wind velocity sensor, which includes:
One sensor main body;
Probe connecting rod, first end is connected to sensor main body, and the other end is free end, extends to the of sensor main body Side;
First pair of ultrasonic probe, including the first ultrasonic probe and the second ultrasonic probe, the two is located at oneself of probe connecting rod By holding, and the first measurement direction in measurement plane is just to arranging;And
Second pair of ultrasonic probe, including the 3rd ultrasonic probe and the 4th ultrasonic probe, the two is located at oneself of probe connecting rod By holding, and the second measurement direction in the measurement plane, just to arranging, the second measurement direction is had with the first measurement direction Predetermined angle α.
By the setting of connecting rod of popping one's head in so that, in a unlimited space, its air permeability is more preferable, especially for ultrasonic probe Which is that it reduces the interference to wind, is able to preferably retain the natural characteristic of wind, vortex can be prevented accurate to measuring wind speed The impact of property, with higher anti-interference, is favorably improved the verity and accuracy of measurement result.
The ultrasound wave of the second ultrasonic probe transmitting during enforcement, can be received first with the first ultrasonic probe, recycle second Ultrasonic probe receives the ultrasound wave of the first ultrasonic probe transmitting, and calculates the parameter of the first measurement direction using ultrasonic time difference method; 3rd ultrasonic probe receives the ultrasound wave of the 4th ultrasonic probe transmitting, and the 4th ultrasonic probe receives the super of the 3rd ultrasonic probe transmitting Sound wave, and the parameter of the second measurement direction is calculated using ultrasonic time difference method;With reference to the first measurement direction, the ginseng of the second measurement direction Number obtains instantaneous wind direction and wind velocity.
In one embodiment of the present utility model, probe connecting rod is four, is connected to sensor main body.
In one embodiment of the present utility model, connecting rod of popping one's head in is provided with marine glue with the junction of sensor main body Circle.
In one embodiment of the present utility model, probe connecting rod is integrally C-shaped.
Preferably, probe connecting rod have be sequentially connected the first extension, the first bending segment, the second extension, second Bending segment, the 3rd extension, the 3rd bending segment and the 4th extension, the first extension is connected to sensor main body, ultrasonic probe It is connected to the 4th extension.
Wherein, the first bending segment, the second bending segment, the bending angle sum of the 3rd bending segment are 180 °, preferably, three The bending angle of bending segment is identical, is 60 °.
In one embodiment of the present utility model, the angle of predetermined angle α is 90 °, so as to simplifying calculating, improves and processes speed Degree, improves monitoring frequency.
In one embodiment of the present utility model, sensor main body is provided with:
Impulse ejection module, is connected with ultrasonic probe;
Echo reception module, is connected with ultrasonic probe;
Core processing unit, is connected with impulse ejection module and echo reception module;
Voltage stabilizing module, is connected between input feeder ear and core processing unit and impulse ejection module, is provided with π types Filtering;And
Numerical data output module, is connected offer output signal with core processing unit.
In one embodiment of the present utility model, sensor main body includes to the pulsed drive structure of ultrasonic probe:
Core processor, produces the output pulse of complementary type PWM to synchronous;
Multi-channel switch, connects core processor, there is provided the output complementary pulse square wave A of the first via and the second tunnel it is defeated Go out complementary pulse square wave B, four road ultrasound probes are driven by the square-wave pulse signal of multiple fixed frequencies come timesharing;
First switch metal-oxide-semiconductor Q3, located at the first via;
Second switch metal-oxide-semiconductor Q6, located at the second tunnel;
H-bridge circuit, by the first power MOS pipe Q1, the second power MOS pipe Q2, the 3rd power MOS pipe Q4, the 4th power MOS Pipe Q5 is constituted;And
Pulse booster transformer T1, ultrasonic pulse driving pulse string Jing H-bridge circuits driving current to outprimary, Outprimary produces forward current, and the secondary coil of coupling produces high back voltage pulse, drives ultrasound by the excitation of interpolar Wave sensor is popped one's head in.
Preferably, pulsed drive structure also includes:
First power MOS pipe Q1, the second power MOS pipe Q2, the 3rd power MOS pipe Q4, the 4th power MOS pipe Q5 are embedded continuous Stream protection diode;
Drop-down protective resistance R5, connects first switch metal-oxide-semiconductor Q3, drags down drive level to close H-bridge circuit with pressure, prevents Only pulse booster transformer T1 normal conductions and burn out;
Drop-down protective resistance R8, connects second switch metal-oxide-semiconductor Q6;
Resonant capacitance C4, the secondary coil with pulse booster transformer T1, ultrasound probe T2 constitute parallel LC resonance and return Road, the secondary coil of pulse booster transformer T1 are resisted its capacitive reactance and are changed into real impedance load, make ultrasound probe T2 as inductance Power reach maximum;
Current-limiting resistance R4, between multi-channel switch and first switch metal-oxide-semiconductor Q3;And/or
Current-limiting resistance R7, between multi-channel switch and second switch metal-oxide-semiconductor Q6.
(3) beneficial effect
The beneficial effects of the utility model are:Ultrasonic two-dimensional wind direction and wind velocity sensor of the present utility model, as which is Using ultrasonic measurement, for comparing prior art, the minimum 0m/s of threshold wind velocity which can calculate, i.e. zero start wind Speed, being capable of wider range, high accuracy, low error ground measurement plane wind direction and wind velocity;By the setting of connecting rod of popping one's head in so that ultrasound In a unlimited space, its air permeability more preferably, is especially that it reduces the interference to wind, is preferably retained probe The natural characteristic of wind, is favorably improved the verity and accuracy of measurement result.Its circuit structure is simple, stable, efficiency High, monitoring frequency width.
Description of the drawings
Overall structure diagrams of the Fig. 1 for this utility model one embodiment;
Circuit system schematic diagrams of the Fig. 2 for this utility model one embodiment;
Fig. 3 is the pulsed drive structural representation in this utility model one embodiment;
Operating process schematic diagrams of the Fig. 4 for this utility model one embodiment;
Timesharing measurement work schedule schematic diagrams of the Fig. 5 for this utility model one embodiment;
Timesharing time of measuring axle schematic diagrams of the Fig. 6 for this utility model one embodiment.
【Description of reference numerals】
1:West is to ultrasonic probe;
2:East orientation ultrasonic probe;
3:North orientation ultrasonic probe;
4:South orientation ultrasonic probe;
5:Waterproof apron;
6:Top cover;
7:Mark;
8:Probe connecting rod;
9:Base;
10:Fixed support.
Specific embodiment
In order to preferably explain this utility model, in order to understand, below in conjunction with the accompanying drawings, it is by specific embodiment, right This utility model is described in detail.
The ultrasonic two-dimensional wind direction and wind velocity sensor of this utility model one embodiment, which includes:
One sensor main body;
Probe connecting rod, first end is connected to sensor main body, and the other end is free end, extends to the of sensor main body Side;
First pair of ultrasonic probe, including the first ultrasonic probe and the second ultrasonic probe, the two is located at oneself of probe connecting rod By holding, and the first measurement direction in measurement plane is just to arranging;And
Second pair of ultrasonic probe, including the 3rd ultrasonic probe and the 4th ultrasonic probe, the two is located at oneself of probe connecting rod By holding, and the second measurement direction in the measurement plane, just to arranging, the second measurement direction is had with the first measurement direction Predetermined angle α.
By the setting of connecting rod of popping one's head in so that, in a unlimited space, its air permeability is more preferable, especially for ultrasonic probe Which is that it reduces the interference to wind, is able to preferably retain the natural characteristic of wind, vortex can be prevented accurate to measuring wind speed The impact of property, with higher anti-interference, is favorably improved the verity and accuracy of measurement result.
As shown in figure 1, first pair of ultrasonic probe, including west to ultrasonic probe and east orientation ultrasonic probe, the two is flat in measurement East-west direction on face is just to arranging;Second pair of ultrasonic probe, including north orientation ultrasonic probe and south orientation ultrasonic probe, the two is in institute The North and South direction in measurement plane is stated just to arranging.It is by two groups of ultrasonic probes are located at thing, North and South direction, i.e., positive two-by-two To penetrating, and the reticule of two groups of probes composition orthogonal vertical in the affiliated plane, so that data can be accurately, and can be with letter Change and calculate, improve processing speed, improve monitoring frequency.
Wherein, connecting rod of popping one's head in can be one or more, for example, can be that with four free ends probe connects Extension bar, or multiple probe connecting rods are provided with four free ends altogether, for example, arrange four probe connecting rods, and each surpasses Sonic probe is connected to sensor main body by a probe connecting rod.Whereby, structure can be simplified, is easy to production, and, more have Beneficial to the interference reduced to wind, the accuracy of measurement result is improved.
Wherein, connecting rod of popping one's head in is integrally C-shaped, can make ultrasonic probe whereby located at the top of sensor main body so that Compact overall structure, takes up room little, meanwhile, enable in particular to further reduce the interference to wind, reduce error.
Preferably, probe connecting rod have be sequentially connected the first extension, the first bending segment, the second extension, second Bending segment, the 3rd extension, the 3rd bending segment and the 4th extension, the first extension is connected to sensor main body, ultrasonic probe It is connected to the 4th extension.Each bending segment can be rounding off, so as to further reducing the interference to wind, be improved survey The accuracy of amount result.
Wherein, the first bending segment, the second bending segment, the bending angle sum of the 3rd bending segment are 180 °, preferably, three The bending angle of bending segment is identical, is 60 °, so as to further reducing the interference to wind, is improved the standard of measurement result True property.
Preferably, the distance between first pair of probe is identical with the distance between second pair of probe.
Wherein, the shell of sensor main body includes:
Top cover, located at the first side of sensor main body, which is provided with mounting direction mark (arrow being for example exposed to the north), so as to Implement in installing;
Base, located at sensor main body in contrast to the side of top cover, connects for fixing main circuit board and (four) probes Bar;
Side wall, is connected between top cover and base, and probe connecting rod is internally extended to come by sensor main body through side wall;
Waterproof apron and sealing coat, located at the junction of probe connecting rod and sensor main body, and will probe connecting rod and The contact dot encapsulation of base;And
Fixed support, is connected to base side, when mounted for fixing, can be resistance to install high-strength waterproof in bottom High temperature aviation plug, measures in order to external cabling.
The setting of said structure so that the profile of sensor main body is succinct, compact conformation, can reduce right to greatest extent The interference of wind, is improved the accuracy of measurement result.
The shell of sensor main body can be made using the resistant material of high intensity.
Wherein, the circuit structure in sensor main body includes:
Impulse ejection module, is connected with ultrasonic probe;
Echo reception module, is connected with ultrasonic probe;
Core processing unit, is connected with impulse ejection module and echo reception module;
Voltage stabilizing module, is connected between input feeder ear and core processing unit and impulse ejection module, is provided with π types Filtering;And
Numerical data output module, is connected offer output signal with core processing unit.
Wherein, core processing unit includes single-chip microcomputer, crystal oscillating circuit, electric source filter circuit, interface voltage change-over circuit, arteries and veins Rush radiating circuit and echo reception process circuit, and single shaft ultrasound probe part.
Specifically, sensor main body includes to the pulsed drive structure of ultrasonic probe:Core processor MCU, multy-way switching Switch MUX, output complementary pulse square wave PWM_A, pull-up resistor R3, switch metal-oxide-semiconductor Q3, current-limiting resistance R1, storage capacitor C1, storage Can electric capacity C2, current-limiting resistance R2, current-limiting resistance R4, drop-down protective resistance R5, power MOS pipe Q1, power MOS pipe Q2, pulse liter Pressure transformer T1, protection diode D1, protection diode D2, driving pulse PULSE_B, pull-up resistor R6, overshoot protection electric capacity C3, power MOS pipe Q4, output complementary pulse square wave PWM_B, current-limiting resistance R7, drop-down protective resistance R8, switch metal-oxide-semiconductor Q6, work( Rate metal-oxide-semiconductor Q5, driving pulse PULSE_A, resonant capacitance C4, ultrasound probe T2.
Wherein, core processor MCU, by internal processes control, synchronous complementary type PWM that produces exports pulse, such as defeated Go out constant amplitude square signal, then multichannel driving is carried out through multi-channel switch MUX, for example, the mutual supplements of output of the first via is provided The output complementary pulse square wave B on square wave A and the second tunnel is rushed, to timesharing four road ultrasound probes of driving, pulse signal can be The square wave of multiple fixed frequencies, can be delayed by the second switch metal-oxide-semiconductor Q6 on the first switch metal-oxide-semiconductor Q3 of the first via and the second tunnel Punching, the H bridges being made up of the first power MOS pipe Q1, the second power MOS pipe Q2, the 3rd power MOS pipe Q4, the 4th power MOS pipe Q5 Circuit, drive high-frequency pulse transformer T1, ultrasonic pulse driving pulse string Jing H-bridge circuit driving currents to outprimary, Forward current is produced in outprimary, the secondary coil of coupling produces high back voltage pulse, drives by the excitation of interpolar super Sonic sensor is popped one's head in.
Preferably, the feeder ear of H-bridge circuit, the driving voltage after pull-up resistor R3 provides voltage stabilizing, for pulsed drive Use.
Preferably, storage capacitor C1, storage capacitor C2 provide energy storage, current limliting electricity in pulsing moment for pulse transformer Resistance R1 and R2 provides current-limiting protection in power end, prevents excessively stream from causing H-bridge circuit and high-frequency pulse transformer to burn out.
Preferably, pulsed drive structure also includes:First power MOS pipe Q1, the second power MOS pipe Q2, the 3rd power MOS The embedded afterflow protection diode of pipe Q4, the 4th power MOS pipe Q5, so as to stabilized driving high-frequency pulse transformer T1.
Preferably, pulsed drive structure also includes:Drop-down protective resistance R5, connects first switch metal-oxide-semiconductor Q3, different when occurring Often during state, drop-down protective resistance R5 forces to drag down drive level, and now H-bridge circuit is closed mode, prevents high-frequency impulse Booster transformer T1 normal conductions and burn out.
Preferably, pulsed drive structure also includes:Drop-down protective resistance R8, connects second switch metal-oxide-semiconductor Q6, different when occurring Often during state, drop-down protective resistance R8 forces to drag down drive level, and now H-bridge circuit is closed mode, prevents high-frequency impulse Booster transformer T1 normal conductions and burn out.
Wherein, the primary coil of high-frequency pulse transformer and secondary coil no-load voltage ratio can be 1:50, when ultrasound wave drives arteries and veins The outprimary of punching string Jing H bridges driving currents to T1, produces forward current, pulse transformer T1 couplings in T1 outprimaries To out-secondary;Now pulse transformer T1 secondary coils produce high back voltage pulse, are driven by the excitation of voltage across poles Ultrasonic sensor probe T2.
Whereby, booster circuit can be driven by PWM to improve impact of the driving voltage to echo of popping one's head in.
Preferably, pulsed drive structure also includes:Resonant capacitance C4 is secondary coil with pulse booster transformer T1, super Sonic probe T2 constitutes parallel LC resonance loop, and the secondary coil of pulse booster transformer T1 resists its capacitive reactance and becomes as inductance Load for real impedance, make the power of ultrasound probe T2 reach maximum.
Preferably, pulsed drive structure also includes:Current-limiting resistance R4, located at multi-channel switch and first switch metal-oxide-semiconductor Between Q3;And/or current-limiting resistance R7, between multi-channel switch and second switch metal-oxide-semiconductor Q6.
In order to improve certainty of measurement, systematic error is reduced, wide-range, the ultrasonic probe of low blind area can be selected, can be with Instantaneous plane wind direction and wind velocity measured value is improved using high primary frequency circuit, in order to improve adaptability, allows which round-the-clock can use, Ultrasonic probe can be with built-in heating module, in case stagnant ice frost sleet affects normal measurement.
During enforcement, ultrasound wave time difference method computation and measurement plane wind speed and direction, sensor can be adopted to utilize offside probe sound Wave impulse is received and dispatched, and measurement wind speed is affected on echo duration.For example, used as transmitting probe, second is ultrasonic for the first ultrasonic probe first Probe obtains a time as receiving transducer when measuring, then, used as transmitting probe, first is ultrasonic for the second ultrasonic probe Probe obtains another time in relative direction as receiving transducer.
If the distance of north and south (or thing) two ultrasonic probe transmitting-receiving is d, transmission time is t with the wind12, contrary wind transmission time is t21, wind speed is Vw, and ultrasonic propagation velocity is VS, can obtain:
Abbreviation can be obtained:
I.e. in practical application, as the reception and transmission range between ultrasonic probe is fixation, therefore, need to only measure and transmit with the wind Time and contrary wind transmission time are obtained wind speed.
Referring to Fig. 3, this utility model additionally provides the monitoring method of ultrasonic two-dimensional wind direction and wind velocity sensor, and which is opened first Machine self-inspection, normally whether, secondly whether the storage of detection inner parameter is normal for four axle ultrasonic probes of detection, afterwards by last time preservation Configuration information imports to current state, enters normal work sequential after starting measurement, synthesizes valid data output after being measured.
Specifically, comprise the steps:
S1, startup self-detection;
S2, parameter configuration initialization;
Base intervalometer (SYSTICK) when S3, unlatching;
S4, measurement single probe echo time;
S5, filtering calculation of wind speed wind direction temperature data;
S6, judge whether to reach timing output data time, if it is not, then returning execution step S4, if so, then continue executing with Step S7;
S7, DMA serial ports sends packet automatically.
Wherein, step S4 and S5 are specifically included:
The single driving of S41, probe prepares;
S42, single measurement of respectively popping one's head in;
S51, each measurement data are stored in fixed array;
In S52, the array of storage measured value, data integrally move to right one;
S53, average each single shaft array data, the instantaneous wind direction and wind velocity value of composite calulation.
Wherein it is possible to the sequential with reference to Fig. 4 and Fig. 5 performs the measurement of four axles probe:
That is single probe poll measurement, by Data Integration and exports, the minimum 32.15ms of each polling cycle after terminating.
By said method, ultrasonic two-dimensional wind direction and wind velocity sensor of the present utility model can be measured in real time, exactly Plane wind speed and direction.
In sum, ultrasonic two-dimensional wind direction and wind velocity sensor of the present utility model, as which is the ultrasound of employing Amount, for comparing prior art, the minimum 0m/s of threshold wind velocity which can calculate, i.e. zero start wind speed, can wider range, In high precision, low error ground measurement plane wind direction and wind velocity;By the setting of connecting rod of popping one's head in so that ultrasonic probe is opened wide in one Space in, its air permeability more preferably, is especially that it reduces the interference to wind, is able to preferably retain the natural characteristic of wind, has Help improve the verity and accuracy of measurement result.Its circuit structure is simple, stable, efficiency high, monitoring frequency width.

Claims (11)

1. a kind of ultrasonic two-dimensional wind direction and wind velocity sensor, it is characterised in which includes:
One sensor main body;
Probe connecting rod, first end are connected to sensor main body, and the other end is free end, extends to the first of sensor main body Side;
First pair of ultrasonic probe, including the first ultrasonic probe and the second ultrasonic probe, the two free end located at probe connecting rod, And the first measurement direction in measurement plane is just to arranging;And
Second pair of ultrasonic probe, including the 3rd ultrasonic probe and the 4th ultrasonic probe, the two free end located at probe connecting rod, And the second measurement direction in the measurement plane, just to arranging, the second measurement direction has pre- clamp with the first measurement direction Angle α.
2. ultrasonic two-dimensional wind direction and wind velocity sensor as claimed in claim 1, it is characterised in that:Probe connecting rod is four, It is connected to sensor main body.
3. ultrasonic two-dimensional wind direction and wind velocity sensor as claimed in claim 1, it is characterised in that:Probe connecting rod and sensor The junction of main body is provided with waterproof apron.
4. ultrasonic two-dimensional wind direction and wind velocity sensor as claimed in claim 1, it is characterised in that:Probe connecting rod is in integrally C Type.
5. ultrasonic two-dimensional wind direction and wind velocity sensor as claimed in claim 4, it is characterised in that:Probe connecting rod has successively First extension of connection, the first bending segment, the second extension, the second bending segment, the 3rd extension, the 3rd bending segment and the 4th Extension, the first extension are connected to sensor main body, and ultrasonic probe is connected to the 4th extension.
6. ultrasonic two-dimensional wind direction and wind velocity sensor as claimed in claim 5, it is characterised in that:It is first bending segment, second curved Trisection, the bending angle sum of the 3rd bending segment are 180 °.
7. ultrasonic two-dimensional wind direction and wind velocity sensor as claimed in claim 6, it is characterised in that:It is first bending segment, second curved Trisection, the 3rd bending segment bending angle it is identical, be 60 °.
8. ultrasonic two-dimensional wind direction and wind velocity sensor as claimed in claim 1, it is characterised in that:The angle of predetermined angle α is 90°。
9. ultrasonic two-dimensional wind direction and wind velocity sensor as claimed in claim 1, it is characterised in that sensor main body is provided with:
Impulse ejection module, is connected with ultrasonic probe;
Echo reception module, is connected with ultrasonic probe;
Core processing unit, is connected with impulse ejection module and echo reception module;
Voltage stabilizing module, is connected between input feeder ear and core processing unit and impulse ejection module, is provided with the filter of π types Ripple;And
Numerical data output module, is connected offer output signal with core processing unit.
10. ultrasonic two-dimensional wind direction and wind velocity sensor as claimed in claim 1, it is characterised in that sensor main body is to ultrasound The pulsed drive structure of probe includes:
Core processor, produces the output pulse of complementary type PWM to synchronous;
Multi-channel switch, connects core processor, there is provided the output on the output complementary pulse square wave A of the first via and the second tunnel is mutual Pulse square wave B is mended, four road ultrasound probes are driven by the square-wave pulse signal of multiple fixed frequencies come timesharing;
First switch metal-oxide-semiconductor Q3, located at the first via;
Second switch metal-oxide-semiconductor Q6, located at the second tunnel;
H-bridge circuit, by the first power MOS pipe Q1, the second power MOS pipe Q2, the 3rd power MOS pipe Q4, the 4th power MOS pipe Q5 Constitute;And
Pulse booster transformer T1, ultrasonic pulse driving pulse string Jing H-bridge circuits driving current to outprimary, in primary Coil-end produces forward current, and the secondary coil of coupling produces high back voltage pulse, drives ultrasound wave to pass by the excitation of interpolar Sensor is popped one's head in.
11. ultrasonic two-dimensional wind direction and wind velocity sensors as claimed in claim 10, it is characterised in that pulsed drive structure is also wrapped Include:
The embedded afterflow of first power MOS pipe Q1, the second power MOS pipe Q2, the 3rd power MOS pipe Q4, the 4th power MOS pipe Q5 is protected Shield diode;
Drop-down protective resistance R5, connects first switch metal-oxide-semiconductor Q3, drags down drive level to close H-bridge circuit with pressure, prevents arteries and veins Rush booster transformer T1 normal conductions and burn out;
Drop-down protective resistance R8, connects second switch metal-oxide-semiconductor Q6;
Resonant capacitance C4, the secondary coil with pulse booster transformer T1, ultrasound probe T2 constitute parallel LC resonance loop, arteries and veins The secondary coil of booster transformer T1 is rushed as inductance, its capacitive reactance is resisted and is changed into real impedance load, make the work(of ultrasound probe T2 Rate reaches maximum;
Current-limiting resistance R4, between multi-channel switch and first switch metal-oxide-semiconductor Q3;And/or
Current-limiting resistance R7, between multi-channel switch and second switch metal-oxide-semiconductor Q6.
CN201620857472.3U 2016-08-09 2016-08-09 Ultrasonic wave two dimension wind direction air velocity transducer Active CN206038716U (en)

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Application Number Priority Date Filing Date Title
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Publication Number Publication Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108387754A (en) * 2018-03-20 2018-08-10 山东省科学院激光研究所 Two-D wind speed wind direction sensor and system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108387754A (en) * 2018-03-20 2018-08-10 山东省科学院激光研究所 Two-D wind speed wind direction sensor and system
WO2019179002A1 (en) * 2018-03-20 2019-09-26 山东省科学院激光研究所 Two-dimensional wind speed and wind direction sensor and system

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