CN104897924B - A kind of two-dimentional reflecting type ultrasonic anemoclinograph and measuring method - Google Patents

A kind of two-dimentional reflecting type ultrasonic anemoclinograph and measuring method Download PDF

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CN104897924B
CN104897924B CN201510218835.9A CN201510218835A CN104897924B CN 104897924 B CN104897924 B CN 104897924B CN 201510218835 A CN201510218835 A CN 201510218835A CN 104897924 B CN104897924 B CN 104897924B
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ultrasonic
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control unit
data
signal
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CN201510218835.9A
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CN104897924A (en
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康宇
崔凌云
陈守胜
胡峰
李泽瑞
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中国科学技术大学
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Abstract

The invention discloses a kind of two-dimentional reflecting type ultrasonic anemoclinograph and measuring method, anemoclinograph includes control unit, data processing unit, wind speed and direction measuring unit, direction calibration unit, temperature compensation unit and air pressure compensating unit;Wind speed and direction measuring unit is made up of ultrasonic transmitter, ultrasonic receiver and Timer module;Direction calibration unit is made up of digital compass and magnetodiode;Temperature compensation unit is made up of temperature detecting module and heating module;Atmospheric pressure compensating unit is made up of baroceptor and data acquisition module.The present invention is using an Integral ultrasonic sensor emission and receives wherein echo-signal all the way, four reception sensors receive reflection echo signal, five sensors are arranged in same level, only wind speed and direction can be calculated using the time difference once launched, received, and measuring principle is simple, measurement accuracy is improved, the service life of instrument is extended, and suitable for various severe measuring environments.

Description

A kind of two-dimentional reflecting type ultrasonic anemoclinograph and measuring method

Technical field

The invention belongs to wind speed and direction field of measuring technique, and in particular to a kind of two-dimentional reflecting type ultrasonic anemoclinograph And measuring method.

Background technology

Anemoclinograph all plays an important role in meteorology, civil aviaton, highway, agricultural and new energy field.At present compared with Use mechanical anemoclinograph, it is mainly rotated by wind-force impeller and obtains fundamental measurement information, by leaf more The revolution for taking turns the angular speed rotated or impeller is converted into electric signal, and calculates wind speed with this.But this anemoclinograph is to surveying Measure environmental requirement higher, and due to unresolved instrument sealing problem, therefore can not normal work in Strong Dust Storm in North China Make, at low ambient temperatures can also be stuck by moving component because of icing;Meanwhile, due to there is more fortune in mechanical anemoclinograph Dynamic component, causes moving component quick abrasion and shortens service life;Further, since being limited by mechanical structure and measuring principle System, the sensitivity of mechanical anemoclinograph is relatively low.The existing ultrasonic aerovane based on time difference method is used mostly to be divided When principle, i.e., a pair of ultrasonic sensors send in turn, receive signal, it is necessary to pendulous frequency it is many, and circuit structure is complicated, Often due to repeatedly measurement causes measurement result to have larger error.

The content of the invention

The technology of the present invention solves problem:Overcoming the deficiencies in the prior art, there is provided a kind of two-dimentional reflecting type ultrasonic wind speed Wind direction instrument apparatus and measuring method, with measurement process simplicity, the accurate advantage of result.

Technical scheme is as follows:A kind of two-dimentional reflecting type ultrasonic anemoclinograph, including:Control unit, number According to processing unit, wind speed and direction measuring unit, direction calibration unit, temperature compensation unit, atmospheric pressure compensating unit, casing and vertical Post;

Wind speed and direction measuring unit, including ultrasonic transmitter, ultrasonic receiver and Timer module, control unit are defeated Go out the square-wave signal with certain dutycycle to wind speed and direction measuring unit, control ultrasonic transmitter transmitting ultrasonic signal; Wind speed and direction measuring unit by ultrasonic echo signal after filtering, amplify, compare processing after obtain square-wave signal, and sent To control unit, ultrasonic transmitter module is connected with ultrasonic receiver module, ultrasonic receiver module and timer mould Block is connected;

Ultrasonic transmitter, for launching ultrasonic signal to carry out the measurement of wind speed and direction, it is occurred by square-wave signal Circuit, ultrasonic drive circuit and ultrasonic sensor composition;Square-wave signal generation circuit is produced for driving supersonic sensing Interval square-wave signal needed for device work;Ultrasonic drive circuit is used to drive ultrasonic sensor to launch ultrasonic signal;It is super The integrated ultrasonic wave emission sensor of acoustic emission sensor, i.e. integrated probe, launch ultrasonic wave and receive ultrasonic all the way Ripple echo-signal;Ultrasonic receiver, for receiving ultrasonic echo signal to carry out subsequent treatment, it includes four ultrasonic waves Receive sensor, four tunnel clamping protective circuits and four tunnel ultrasonic echo signal process circuits;Four ultrasonic waves receive sensor Popped one's head in for non-integral, receive reflectance ultrasound ripple echo-signal;Four tunnel clamping protective circuits realize to ultrasonic drive circuit and The isolation of ultrasonic echo signal process circuit;Four tunnel ultrasonic echo signal process circuits are used to enter ultrasonic echo signal Row processing, enables the ultrasonic echo signal after processing to turn into the signal that control unit is handled;Timer module, utilizes control The clocking capability of unit is realized, is started timing when ultrasonic transmitter works, is stopped when ultrasonic receiver works by interrupting Only timing;

Direction calibration unit, for determining reference direction, this reference direction using as equipment install when reference direction, together When also wind direction data is corrected, make it consistent with actual geographic direction, direction calibration unit is by digital compass and magnetosensitive two Pole pipe is constituted, and control unit uses I2C bus marco direction calibration units when geomagnetic field intensity to measuring, direction calibration list The magnetic field strength date that measurement is obtained is sent to control unit by member;Digital compass and magnetodiode with control unit phase Even;

Temperature compensation unit is made up of temperature detecting module and heating module, and it is used to equipment is carried out temperature-compensating to protect Demonstrate,proving anemoclinograph in cold environments also can normal work;The real time temperature data of detection are sent to control by temperature compensation unit Unit processed, control unit control heating module in threshold value of the temperature less than setting carries out temperature-compensating to equipment.Temperature detection Module and heating module are connected with control unit respectively;

Atmospheric pressure compensating unit is made up of baroceptor and data acquisition module, the air pressure number that baroceptor is measured in real time According to the air speed data of measurement is modified and optimized by data acquisition module;Control unit uses I2C bus marcos air pressure is mended Repay unit to measure real-time air pressure, the barometric information that measurement is obtained is sent to control unit by atmospheric pressure compensating unit;

Control unit, is connected with data processing unit, the processing of related data and is drawn final during measuring Wind speed and direction data;Be connected with wind speed and direction measuring unit, control the transmitting and reception of ultrasonic wave, and started by interrupting and Timer module is closed, ultrasonic propagation time is obtained;Control unit is connected with direction calibration unit, determines reference direction, ground It is magnetic south direction to manage the arctic, for being calibrated to wind direction data, makes wind direction data consistent with actual wind direction;Control unit It is connected with temperature compensation module, judges whether to open heater circuit by receiving the data of temperature sensor, make equipment in temperature Normal work is remained in the case that degree is relatively low;Control unit is connected with atmospheric pressure compensating unit, by the number for receiving baroceptor According to being corrected to air speed data, the true air speed data under different air pressure environment is obtained;

Data processing unit, the square wave driving signal of reception control unit, ultrasonic echo signal, temperature measuring data, Magnetic direction data and air pressure measurement data;The square wave driving signal sent for control unit, data processing unit is by its point The drive circuit of triode and transformer composition is sent into after frequency, driving ultrasonic sensor sends ultrasonic wave;Returned for ultrasonic wave Ripple signal, data processing unit filtered, amplified, compare processing after send into control unit.Surveyed for temperature, magnetic field, air pressure Data are measured, the data received from respective sensor are filtered by data processing unit, send into control unit after enhanced processing;

Casing includes upper casing and lower casing, and upper casing is connected with lower casing by support;Provided with installation below lower casing Column, for supporting fixation;Control unit, data processing unit, wind speed and direction measuring unit, direction calibration unit, temperature Degree compensating unit and air pressure compensating unit are both placed in lower casing, and four ultrasonic waves receive sensor, same positioned at lower casing On circumference and spaced 90 degree, i.e., four ultrasonic waves receive sensor and are embedded in lower casing and positioned at 4 points of same circumference On, spaced an angle of 90 degrees, Integral ultrasonic emission sensor is also embedded in lower casing, and positioned at home position;Upper machine Shell center, i.e., the position just to Integral ultrasonic emission sensor is convex surface, for reflectance ultrasound wave pulse signal.

Described control unit includes ARM7TDMI controllers, RS485 interface modules, memory module and power module;RS485 Interface module, memory module and power module are connected with ARM7TDMI controllers;ARM7TDMI controllers are used for equipment Each module sends instruction, and RS485 interface modules are used for the transmission and reception of data, and memory module is used to deposit valid data Storage, power module is used to be powered each module of equipment.

A kind of method that wind speed and direction measurement is carried out using above-mentioned anemoclinograph, is comprised the following steps:

(1) the real time environment temperature data obtained by temperature sensor measurement is transmitted to control list by temperature detecting module Member, control unit is according to calculating and being compared to determine whether to open heating module with the threshold value of setting, if environment temperature is low In the threshold value of setting, then open heater circuit, to equipment, i.e. ultrasonic sensor region is heated, with ensure equipment compared with Normal work is remained under low temperature;

(2) control unit sends square-wave signal and starts timing, feeding triode and transformation after this square-wave signal is divided The drive circuit of device composition, driving Integral ultrasonic emission sensor sends ultrasonic wave;

(3) when echo-signal is received by ultrasonic receiver respectively, the signal received is respectively through respective follow-up signal Process circuit is filtered, amplified, comparing processing, produces each self-corresponding timer and interrupts stop signal, ultrasound is obtained respectively Ripple signal receives elapsed time from being sent to by each road ultrasonic receiver, the note integrated ultrasonic sensors of T1 Transmitting, reception time, T2-T5 is respectively the reception time of four (four corners of the world four direction) ultrasonic sensors;

(4) control unit by atmospheric pressure compensating unit and direction calibration unit obtain barometric information and magnetic direction data come Carry out wind speed and direction correction;

(5) wind speed component value of the air speed value in two vertical direction of X, Y is:

According to the principle of Vector modulation, it can be deduced that actual wind speed V and wind direction α value:

Wherein, D is the vertical range in the lower casing center of circle and upper casing convex surface, and R is four reception sensors places of lower casing The radius of circumference, θ is the ultrasonic wave path of reception sensor and the angle of lower casing plane.

The present invention has the advantages that:

(1) ultrasonic aerovane of the present invention is received and passed using an integrative ultrasonic wave sensor and four ultrasonic waves Sensor, and five ultrasonic sensors are embedded in lower casing, make circuit structure simpler.Only pass through one in measurement process Secondary transmitting ultrasonic wave, it is possible to measure wind speed and direction.Unique apparatus structure, which to launch for Integral ultrasonic, to be passed Tool has great advantage in the selection of sensor, and field angle is big or small can meet measurement device requirement.

(2) ultrasonic aerovane circuit of the present invention uses modularized design, and analog circuit and digital circuit are divided into Two pieces of circuit boards are designed, and reduce design difficulty, and easy to maintain.

(3) environmental suitability of the present invention is strong.Upper casing can block sleet and sand and dust, shadow of the reduction foreign matter to measuring wind speed Ring, while upper casing can also prevent the interference of the wind in vertical direction, improve the measurement accuracy of whole system.

(4) barometric information that the baroceptor measurement in the present invention is obtained, can be used to carry out school to wind speed and direction data Just, to obtain the accurate wind speed and direction data under different air pressure environment.

(5) the ultrasonic aerovane compact conformation that the present invention is provided, measuring principle is simple, improves measurement accuracy, The service life of instrument is extended, and suitable for various severe measuring environments.

Brief description of the drawings

Fig. 1 is the system architecture diagram of ultrasonic aerovane;

Fig. 2 is the apparatus structure schematic diagram of ultrasonic aerovane;

Fig. 3 is the measuring principle schematic diagram of ultrasonic aerovane;

Fig. 4 is ultrasonic wind speed and direction measuring unit echo signal processing block diagram;

Fig. 5 is the temperature compensation unit block diagram of ultrasonic aerovane;

Fig. 6 is the reference direction circuit theory diagrams of ultrasonic aerovane;

Fig. 7 is the driver circuit schematic diagram of ultrasonic aerovane;

Fig. 8 is the software flow pattern of ultrasonic aerovane.

In figure:1- upper casings;21- supports;22- supports;23- supports;24- supports;3- Integral ultrasonics transmitting sensing Device;41- ultrasonic waves receive sensors A;42- ultrasonic waves receive sensor B;43- ultrasonic waves receive sensor C;44- ultrasonic waves connect Receive sensor D;5- lower casings;6- installs column.

Embodiment

The present invention is further described with reference to the accompanying drawings and detailed description.

As shown in figure 1, the core of ultrasonic aerovane of the present invention is control unit, it and data processing unit phase Even, the processing of related data and final wind speed and direction data are drawn during measuring.It is with wind speed and direction measuring unit It is connected, controls the transmitting and reception of ultrasonic wave, and started by interrupting and close Timer module, when obtains ultrasonic propagation Between.It is connected with direction calibration unit, reference direction, i.e. north geographic pole (magnetic south) direction is determined, for wind direction data Calibrated, be allowed to consistent with actual wind direction.It is connected with temperature compensation module, is sentenced by receiving the data of temperature sensor It is disconnected whether to open heater circuit, equipment is remained to normal work in the case where temperature is relatively low.It is connected with atmospheric pressure compensating unit, Air speed data is corrected by receiving the data of baroceptor, the true wind speed number under different air pressure environment is obtained According to.Control unit is also connected with RS485 interface modules, memory module, is realized by RS485 interface modules to measurement data Transmission, storage to effective measurement data is realized by memory module.

As shown in figure 1, the control unit of this ultrasonic aerovane is the ARM7TDMI chip LPC2210 of NXP companies, Its performance is stable, cost performance is high, and disposal ability is strong, can be achieved to handle the signal of 5 tunnel ultrasonication circuits simultaneously.

As shown in Fig. 2 the casing of this ultrasonic aerovane includes upper casing 1 and lower casing 5, lower casing 5 is connected to Install on column 6, installing column is used to support fixation.Upper casing 1 and lower casing 5 are oppositely arranged, and pass through four supports 21-24 links together.

It is connected respectively with control unit as shown in Fig. 2 four ultrasonic waves receive sensor 41,42,43,44;Control unit Sensor is received with four ultrasonic waves and an integrative ultrasonic wave sensor is embedded in lower casing, and four ultrasonic waves are received Sensor is located on same circumference, and spaced an angle of 90 degrees.It is directly over the integrative ultrasonic wave sensor in the center of circle The convex surface position of upper casing, for reflectance ultrasound wave pulse signal.For the integrative ultrasonic wave sensor positioned at center, Its launch driving circuit and echo signal processing circuit are connected together by ultrasonic sensor;Connect for four additional ultrasonic wave Sensor is received, they only need to design ultrasonic echo signal process circuit, so as to simplify circuit design.

As shown in figure 3, this is the measuring principle schematic diagram of ultrasonic aerovane.This device is surveyed using time difference method principle Wind speed and direction data are measured, four ultrasonic waves receive the distribution of sensor as illustrated, being located at four corners of the world four direction respectively.D For the vertical range in the lower casing center of circle and upper casing convex surface, R is the radius of circumference where four reception sensors of lower casing, and θ is Ultrasonic wave receives the ultrasonic wave path of sensor and the angle of lower casing plane.The transmitting of the integrated ultrasonic sensors of T1, Reception time, T2-T5 is respectively the reception time that four (four corners of the world four direction) ultrasonic waves receive sensor.

Wind speed component value of the air speed value in two vertical direction of X, Y be:

According to the principle of Vector modulation, it can be deduced that actual wind speed V and wind direction α value:

As shown in figure 4, this is ultrasonic wind speed and direction measuring unit echo signal processing block diagram.In figure, ultrasonic wave is received Sensor receives the ultrasonic echo signal of reflection, and clamping protective circuit is only used on integrative ultrasonic wave sensor, with to prevent Only the high pressure entering signal treatment loop of drive circuit side and destruction is produced to it, and then reach the purpose of protection subsequent conditioning circuit. And for other four roads ultrasonic wave receiving circuit, clamping protective circuit is not essential, because this four tunnel is not driven circuit The influence of high pressure.Ultrasonic echo signal is via the bandpass filtering being made up of after clamping protective circuit inductance, electric capacity and resistance Device is filtered processing.Passed through after filtering and electricity needed for processing produces subsequent conditioning circuit is amplified as logafier and operational amplifier Signal is pressed, and delivers to the threshold value comparison circuit of comparator composition and produces timer interrupt signal, then control is sent into via isolation circuit Unit is handled.

As shown in figure 5, this is the temperature compensation unit of ultrasonic aerovane.Ultrasonic aerovane measurement process Middle control unit needs to obtain current ambient temperature data to carry out temperature-compensating guarantee to wind speed and direction measuring unit in real time Measurement accuracy.Wherein, the ambient temperature data of measurement is sent into control unit by temperature sensor, with the heating-up temperature being provided with Threshold value is judged.If higher than threshold value, not starting heater circuit;If less than the heating-up temperature threshold value of setting, control unit Pulse signal is sent, by sending into the input of intelligent power high side switches after the photoelectric coupler isolation that shields, Its output end connects five adding thermal resistances, and they are located at the lower position of five ultrasonic sensors respectively.By temperature-compensating, So that ultrasonic sensor at low ambient temperatures also can normal work, enhance the environment survival ability of this anemoclinograph.

As shown in fig. 6, this is the reference direction circuit theory diagrams of ultrasonic aerovane.It uses 3 axle digital compass Reference direction circuit is constituted with magnetodiode, digital compass uses I2C agreements carry out data transmission, and are passed with very high data Defeated rate, and transmission line is simple, only one serial data line SDA and a serial time clock line SCL.Digital compass control port Directly it is connected with data port pinout with control unit, ARM7TDMI controllers are produced by external interrupt pin and interrupt control Signal is currently installed on bearing data to read, i.e., DRDY pins interrupt data, and pass through I2C interface is single by data feeding control It is first to be handled.

As shown in fig. 6, magnetodiode is worked using electronics and hole double implantation effect and complex effect principle, With very high sensitivity.Because magnetodiode is under positive and negative magnetic fields, the direction of its output signal increment is different, because This can differentiate magnetic direction using this point.In this equipment, magnetodiode direction is equipment reference direction N (upper casings Arrow label direction), earth direction to the north pole need to be measured during installation with precision instrument, and be aligned with it.

As shown in fig. 7, this is the driver circuit schematic diagram of ultrasonic aerovane.Square-wave signal is produced by control unit S3B ends, controlling switch triode T203 break-make are accessed, so that the secondary of transformer produces 350V or so DC-pulse Pressure, to drive ultrasonic wave emission sensor to produce one section of ultrasonic pulse signal.D208 is clamp diode, is by two high speeds Obtained from diode parallel connected in reverse phase.

As shown in figure 8, this is the software flow pattern of ultrasonic aerovane.First, control unit sends square-wave signal And starting timing, square-wave signal sends into the drive circuit of triode and transformer composition, driving integration after scaling down processing Ultrasonic wave emission sensor launches ultrasonic wave.Four ultrasonic waves receive sensor and are respectively received after echo-signal, after filtering, Amplify, compare processing after send into control unit, be compared to determine whether effective echo-signal by the threshold value with setting, If it is not, then continuing to launch ultrasonic wave and detecting;If receiving effective echo-signal, triggering is interrupted, and is stopped timing, is obtained five tunnels Ultrasonic propagation time T1, T2, T3, T4, T5.According to the related data in propagation time and plant machinery structure, the time difference is utilized Method principle can calculate wind speed and direction data, and the real-time barometric information obtained by barometric surveying unit is to result of calculation It is modified, to obtain more conforming to the wind speed and direction value of actual conditions.Effective wind speed is exported finally by RS485 interface modules Wind direction data, and preserve.

Above example is provided just for the sake of the description purpose of the present invention, and is not intended to limit the scope of the present invention.This The scope of invention is defined by the following claims.The various equivalent substitutions that do not depart from spirit and principles of the present invention and make and repair Change, all should cover within the scope of the present invention.

Claims (3)

1. a kind of two-dimentional reflecting type ultrasonic anemoclinograph, it is characterised in that including:Control unit, data processing unit, wind Fast wind direction measuring unit, direction calibration unit, temperature compensation unit, atmospheric pressure compensating unit, casing and column;
Wind speed and direction measuring unit, including ultrasonic transmitter, ultrasonic receiver and Timer module, control unit output tool There is the square-wave signal of certain dutycycle to wind speed and direction measuring unit, control ultrasonic transmitter launches ultrasonic signal;Wind speed Wind direction measuring unit by ultrasonic echo signal after filtering, amplify, compare processing after obtain square-wave signal, and be passed to control Unit processed, ultrasonic transmitter is connected with ultrasonic receiver, and ultrasonic receiver is connected with timer;
Ultrasonic transmitter, for launching ultrasonic signal to carry out the measurement of wind speed and direction, it by square-wave signal generation circuit, Ultrasonic drive circuit and ultrasonic sensor composition;Square-wave signal generation circuit is produced for driving ultrasonic sensor to work Required interval square-wave signal;Ultrasonic drive circuit is used to drive ultrasonic sensor to launch ultrasonic signal;Ultrasonic wave is passed The integrated ultrasonic wave emission sensor of sensor, i.e. integrated probe, launch ultrasonic wave and receive ultrasonic echo signal all the way; Ultrasonic receiver, for receiving ultrasonic echo signal to carry out subsequent treatment, it include four ultrasonic waves receive sensors, Four tunnel clamping protective circuits and four tunnel ultrasonic echo signal process circuits;Four ultrasonic waves receive sensor and visited for non-integral Head, receives reflectance ultrasound ripple echo-signal;Four tunnel clamping protective circuits, which are realized, to be believed ultrasonic drive circuit and ultrasonic echo The isolation of number process circuit;Four tunnel ultrasonic echo signal process circuits are used to handle ultrasonic echo signal, make place Ultrasonic echo signal after reason turns into the signal that control unit can be handled;Timer module, utilizes the timing of control unit Function is realized, starts timing when ultrasonic transmitter works, timing is stopped by interrupting when ultrasonic receiver works;
Direction calibration unit, for determining reference direction, this reference direction using as equipment install when reference direction, while Wind direction data is corrected, makes it consistent with actual geographic direction, direction calibration unit is by digital compass and magnetodiode Composition, control unit uses I2C bus marco direction calibration units when geomagnetic field intensity to measuring, and direction calibration unit will Measure obtained magnetic field strength date and be sent to control unit;Digital compass and magnetodiode are connected with control unit;
Temperature compensation unit is made up of temperature detecting module and heating module, and it is used to equipment is carried out temperature-compensating to ensure wind Fast anemoscope in cold environments also can normal work;It is single that the real time temperature data of detection are sent to control by temperature compensation unit Member, control unit control heating module in threshold value of the temperature less than setting carries out temperature-compensating to equipment;Temperature detecting module It is connected respectively with control unit with heating module;
Atmospheric pressure compensating unit is made up of baroceptor and data acquisition module, the barometric information that baroceptor is measured in real time, The air speed data of measurement is modified and optimized by data acquisition module;Control unit uses I2C bus marco atmospheric pressure compensatings Unit is measured to real-time air pressure, and the barometric information that measurement is obtained is sent to control unit by atmospheric pressure compensating unit;
Control unit, is connected with data processing unit, and the processing of related data and final wind speed is drawn during measuring Wind direction data;It is connected with wind speed and direction measuring unit, controls the transmitting and reception of ultrasonic wave, and starts and close by interrupting Timer module, obtains ultrasonic propagation time;Control unit is connected with direction calibration unit, determines reference direction, geographic north Pole is magnetic south direction, for being calibrated to wind direction data, makes wind direction data consistent with actual wind direction;Control unit and temperature Spend compensating unit be connected, judged whether by receiving the data of temperature sensor open heating module, make equipment temperature compared with Normal work is remained in the case of low;Control unit is connected with atmospheric pressure compensating unit, by receive the data of baroceptor come Air speed data is corrected, the true air speed data under different air pressure environment is obtained;
Data processing unit, the square wave driving signal of reception control unit, ultrasonic echo signal, temperature measuring data, magnetic field Bearing data and air pressure measurement data;The square wave driving signal sent for control unit, after data processing unit is divided The drive circuit of triode and transformer composition is sent into, driving ultrasonic sensor sends ultrasonic wave;For ultrasonic echo letter Number, data processing unit filtered, amplified, compare processing after send into control unit;For temperature, magnetic field, barometric surveying number According to the data received from respective sensor are filtered by data processing unit, send into control unit after enhanced processing;
Casing includes upper casing and lower casing, and upper casing is connected with lower casing by support;Provided with installation column below lower casing, For supporting fixation;Control unit, data processing unit, wind speed and direction measuring unit, direction calibration unit, temperature-compensating Unit and air pressure compensating unit are both placed in lower casing, and four ultrasonic waves receive sensor, on the same circumference of lower casing And spaced 90 degree, i.e., four ultrasonic waves receive sensor and are embedded in lower casing and on 4 points of same circumference, phase An angle of 90 degrees is mutually spaced, Integral ultrasonic emission sensor is also embedded in lower casing, and positioned at home position;In upper casing The heart, i.e., the position just to Integral ultrasonic emission sensor is convex surface, for reflectance ultrasound wave pulse signal.
2. two-dimentional reflecting type ultrasonic anemoclinograph according to claim 1, it is characterised in that:Described control unit bag Include ARM7TDMI controllers, RS485 interface modules, memory module and power module;RS485 interface modules, memory module and electricity Source module is connected with ARM7TDMI controllers;ARM7TDMI controllers, which are used to send each module of equipment, to be instructed, and RS485 connects Mouth mold block is used for the transmission and reception of data, and memory module is used for the storage to valid data, and power module is used for each to equipment Module is powered.
3. a kind of two-dimentional reflecting type ultrasonic anemoclinograph using as described in claim any one of 1-2 carries out wind speed and direction The method of measurement, it is characterised in that comprise the following steps:
(1) the real time environment temperature data obtained by temperature sensor measurement is transmitted to control unit by temperature detecting module, control Unit processed is according to calculating and being compared to determine whether to open heating module with the threshold value of setting, if environment temperature is less than setting Threshold value, then open heating module, to equipment, i.e. ultrasonic sensor region is heated, to ensure equipment in lower temperature Under remain to normal work;
(2) control unit sends square-wave signal and starts timing, feeding triode and transformer group after this square-wave signal is divided Into drive circuit, driving Integral ultrasonic emission sensor sends ultrasonic wave;
(3) when echo-signal is received by ultrasonic receiver respectively, the signal received is handled through respective follow-up signal respectively Circuit is filtered, amplified, comparing processing, produces each self-corresponding timer and interrupts stop signal, ultrasonic wave letter is obtained respectively Number elapsed time is received by each road ultrasonic receiver from being sent to, the note integrated ultrasonic wave emission sensors of T1 Transmitting, reception time, T2-T5 are respectively the reception time that four ultrasonic waves receive sensor;Four ultrasonic waves, which are received, to be passed Sensor is located at four corners of the world four direction respectively;
(4) control unit obtains barometric information and magnetic direction data to carry out by atmospheric pressure compensating unit and direction calibration unit Wind speed and direction is corrected;
(5) wind speed component value of the air speed value in two vertical direction of X, Y is:
According to the principle of Vector modulation, it can be deduced that actual wind speed V and wind direction α value:
Wherein, D is the vertical range in the lower casing center of circle and upper casing convex surface, and R is circumference where four reception sensors of lower casing Radius, θ is receives the angle of ultrasonic wave path and the lower casing plane of sensor.
CN201510218835.9A 2015-04-30 2015-04-30 A kind of two-dimentional reflecting type ultrasonic anemoclinograph and measuring method CN104897924B (en)

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