CN102288777B - Portable high-precision three-dimensional anemoscope - Google Patents
Portable high-precision three-dimensional anemoscope Download PDFInfo
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Abstract
The invention discloses a portable high-precision three-dimensional anemoscope, which consists of a compass positioning device, a three-path micro-electromechanical system (MEMS) gas flow chip, a constant flow source circuit, a multi-channel analog/digital (A/D) acquisition circuit, a temperature and humidity measuring module, a singlechip, a liquid crystal display module and a standard communication module, wherein the compass positioning device is arranged on the surface of the anemoscope and is used for indicating a direction in which an instrument is positioned; the three-path MEMS gas flow chip has a three-dimensional vertical structure and is fixed on the surface of the anemoscope; the constant flow source circuit is connected with the three-path MEMS gas flow chip and is used for providing accurate and stable current for the chip; output of the three-path MEMS gas flow chip is transmitted to the multi-channel A/D acquisition circuit; output of the multi-channel A/D acquisition circuit is transmitted to the singlechip; output of the temperature and humidity measuring module is transmitted to the singlechip; and output of the singlechip is connected to the liquid crystal display module and the standard communication module. The anemoscope has small volume and light weight, wide-range high-precision wind speed measurement is realized, and the manufacturing cost is greatly saved.
Description
Technical field
The present invention relates to a kind of Portable high-precision three-dimensional anemoscope, belong to the automatic measurement field of instrumentation technology, it can be used for measuring wind speed, wind direction data under various weather conditions, environment.
Background technology
(1) anemometer background technology
The measurement of wind speed, wind direction all has very important meaning in various aspects such as meteorology, physical culture, safeties of civil aviation, also derives thus instrument for wind measurement miscellaneous, has a wide range of applications in different occasions.
Common low latitude anemometer mainly contains following several at present:
(1) mechanical type anemometer is as wind-cup type anemometer, fan blade type anemometer etc.Mechanical type is surveyed wind
Instrument by moving vane along with the stressed of natural wind rotates, thereby measure the velocity of rotation calculation of wind speed.Rely on the rotation of inner vanes due to the mechanical type anemometer, thus there are the shortcomings such as reaction velocity is slow, measuring accuracy is low, easy damage, but that advantage is cost is low.
(2) ultrasound bearing.The ultrasonic sensor of instrument internal by just, inverse piezoelectric effect realizes the mutual conversion between high-frequency sound energy and electric energy, thereby realizes hyperacoustic transmitting and receiving.In the emission of point-to-point transmission, the mistiming of reception, can calculate current air speed value by ultrasound wave.Common ultrasonic wind velocity indicator has the difference of one dimension, two dimension, three-dimensional in the market, and along with the increase of measuring dimension, its price is also thereupon more expensive, and wherein the quotation of three-dimensional ultrasonic anemometer is more than 100,000.The advantage of ultrasound bearing is that reaction velocity is fast, measuring accuracy is high.
(3) laser doppler anemometer.The Laser Measuring wind system adopts the laser of 10um and 2um wavelength to carry out coherent detection to the aerosol scattering signal in atmospheric boundary layer usually, directly obtains the radially Doppler shift of wind speed, and then obtains wind speed information.Laser Measuring bearing Information Monitoring scope is wide, data are accurate, but cost is more high, and volume is larger, needs vehicle-mounted mobile, is mainly used at present the aerological sounding of large-scale activity, is difficult to promote.
In sum, there are the following problems for existing anemometer:
1) now widely used mechanical type anemometer can only be measured the plane wind speed, and the physical construction of rotation is arranged, and precision is low, fragile, demand that more and more can not satisfying the market.
2) high-precision doppler Laser Measuring bearing volume is larger, the occasion of the portable wind measuring set that is difficult to satisfy the demand.
3) can not take into account degree of accuracy and manufacturing cost, the ultrasound wave that precision is high, the equal complex structure of laser doppler anemometer, cost are high.
(2) MEMS gas flow chip background technology
The MEMS technology refers in the category of die size, adopt the micro-system with machinery, electronics and other physical characteristicss of modern processing technique and Material growth and synthetic technology manufacturing, because its main technique is to construct on silicon chip, therefore be commonly referred to as the MEMS chip.MEMS gas flow chip is the chip that is used for the measurement gas flow that adopts the MEMS technology to make.
The MEMS gas flow chip that Portable high-precision three-dimensional anemoscope is selected, its principle are to utilize " energy equilibrium ", also referred to as the thermal mass flow sensors of " heat distribution formula ".Comprise a low-grade fever source (the resistance wire galvanization can heat) and temperature sensor in MEMS gas flow chip, the temperature difference between low-grade fever source maintenance and environment temperature forms fixing temperature field and distributes around chip.If stream is uniflux by the gas of chip surface, will take away heat when gas flow is crossed chip, make the temperature field of chip change.The flow velocity of gas is faster, density is larger, and the heat of taking away is more.Therefore, by the variation in the temperature field on survey sensor, can draw the gas flow rate (mass rate) of the chip of flowing through.
At present MEMS gas flow chip has been widely used in gas meter, has the product of nearly 20 years historical, and can reach 0.5% high measurement accuracy, is a kind of miniature, high precision, flow measurement product that reliability is high.
Summary of the invention
The problem that the technology of the present invention solves is: use MEMS gas flow measurement chip, design high-precision AD Acquisition Circuit, and rely on single-chip microcomputer (Micro Processor) to realize multichannel collecting, data processing and storage scheme, with the final calculation of wind speed that is used for.
Technical solution of the present invention is:
A kind of Portable high-precision three-dimensional anemoscope, it is comprised of compass locating device, three road MEMS gas flow chips, constant-current source circuit, hyperchannel A/D Acquisition Circuit, temperature and humidity measurement module, single-chip microcomputer, LCD MODULE, standard communication module.Position annexation between them is: the compass locating device is installed on the anemometer surface, but indicating instrument residing orientation; Three road MEMS gas flow chips become three-dimensional vertical structure, are fixed in the anemometer surface; Constant-current source circuit connects three road MEMS gas flow chips, for it provides precise and stable electric current; Hyperchannel A/D Acquisition Circuit is sent in the output of three road MEMS gas flow chips; The output of hyperchannel A/D Acquisition Circuit is sent in single-chip microcomputer; The output of temperature and humidity measurement module is sent in single-chip microcomputer; The output of single-chip microcomputer is connected to LCD MODULE and standard communication module.
Described compass locating device, being contained in needle free to rotate on axle by the sign (direct north point) of fixed position on anemometer and one forms, relation between the two is: needle can remain under the effect of terrestrial magnetic field on the tangential direction of magnetic meridian, and the arctic of needle (N) points to the geographical arctic.When the user uses anemometer, adjust the direction of anemometer, make the arctic pointer (N) of needle refer on the direct north point of anemoscope, thus the positive North facing of anemometer, the orientation of itself can be determined.The sign of this fixed position is the circular black identification point on anemometer surface; This needle is the commercial product of choosing on demand.
Described three road gas MEMS flow chips, consist of three-dimensional vertical structure by three MEMS flow chips, when the positive North facing of anemometer is placed (arctic pointer of needle refers on direct north point in anemometer), the position of three MEMS flow chips is respectively: be parallel to ground level parallel with magnetic meridian, be parallel to ground level vertical with magnetic meridian, perpendicular to ground level.MEMS flow chip internal contains the low-grade fever source, remaining under the effect of constant-current source circuit on a stationary temperature, make the space of this chip top form definite temperature field, when air flows through this chip with different speed, different variations also will occur in the temperature field, the temperature sensor on this chip can record this variation, and the measured temperature value is passed to hyperchannel A/D Acquisition Circuit.This three road gas MEMS flow chip is the commercial product of choosing on demand.
Described constant-current source circuit is comprised of constant current source chip, control line.Relation is therebetween: single-chip microcomputer carries out switch by control pair constant current source chip to be controlled, thus make the constant current source chip to the low-grade fever source of MEMS flow chip internal stablize, heating accurately, can keep the low-grade fever source a certain to fixed temperature on.This control line is single plain conductor.
Described hyperchannel A/D Acquisition Circuit, formed by analog switch, accurate voltage change-over circuit, A/D conversion chip, relation between the three is: analog switch is used for channel selecting, and single-chip microcomputer is by control simulation switch circulation gating three road gas MEMS flow chips, and data acquisition is carried out in timesharing; The accurate voltage change-over circuit is converted to the required supply voltage of A/D conversion chip with supply voltage, for the A/D conversion chip provides precise and stable reference voltage; The A/D conversion chip is converted to digital output with the analog voltage amount (temperature signal) of input, offers single-chip microcomputer and processes.This accurate voltage change-over circuit is comprised of chip LT1790BC96 and filter capacitor, interconnects therebetween.
Described temperature and humidity measurement module is comprised of temperature sensor DS18B20 chip, humidity sensor DHT11 chip.Relation between the two is: independent mutually, and concurrent working, the output data are to single-chip microcomputer; Wherein, temperature sensor DS18B20 can be converted to digital signals format with temperature signal, is delivered in single-chip microcomputer and processes; Humidity sensor DHT11 transfers current humidity value to digital signal, passes to single-chip microcomputer and processes.Record current humiture value, be used for doing the data correction when wind speed calculates, improve the degree of accuracy of measuring wind speed.
Described single-chip microcomputer, processor for whole circuit, its major function is, control the break-make of constant-current source circuit, gating hyperchannel A/D Acquisition Circuit, the output signal of reception A/D conversion chip, calculate the corresponding air speed value of temperature variation curve, and the output signal of reception temperature and humidity measurement module, air speed value is carried out the humiture correction, at last final space wind vector value is exported to liquid crystal display, standard communication module.
Described LCD MODULE is comprised of liquid crystal display, liquid-crystal controller, winding displacement.Relation is therebetween: winding displacement comprises data line, control signal wire, connects single-chip microcomputer and liquid-crystal controller, and by the decoding of liquid-crystal controller, single-chip microcomputer sends the output of instruction and Data Control liquid crystal display.LCD MODULE can show the parameters such as wind speed change curve, humiture, wind direction in real time, and effect is clear, directly perceived.
Described standard communication module is comprised of GPRS wireless module, USB communication interface.Relation is therebetween: separate, and concurrent working; The GPRS wireless communication module, long transmission distance, communication robust is high, can realize real-time, the wireless transmission of wind speed, wind direction data, uses to surveying wind unit so that data to be provided expediently; USB communication interface standard, the transmission of data is stable, quick, easy to use.
Wherein, the model of this three road gas MEMS flow chip is: Posifa Flow Sensor;
Wherein, this constant current source chip is LT3092;
Wherein, this analog switch is chip ADG734;
Wherein, this A/D conversion chip is AD7699;
Wherein, the model of this single-chip microcomputer is MSP430F2471;
Wherein, the model of this liquid crystal display is DT24064;
Wherein, the model of this liquid-crystal controller is T6963;
Wherein, the specification of this winding displacement is the grey winding displacement of 2.54mm spacing 20 pins.
This device principle of work flow process is as follows:
At first guide for use pin locating device, sign anemometer device current orientation makes the user adjust the orientation of anemometer by the indication on instrument, makes the north orientation pointer of compass refer on the direct north point of anemometer, and this moment, anemometer was positive North facing placement; The MEMS gas flow chip that uses afterwards three-dimensional perpendicular to place, when the positive North facing of anemometer is placed, the orientation of MEMS gas flow chip is definite, be respectively be parallel to the parallel magnetic meridian direction of ground level, be parallel to the vertical magnetic meridian direction of ground level, perpendicular to the ground level direction; Then control constant-current source circuit and be the low-grade fever source heating of MEMS gas flow chip internal, and the low-grade fever source is remained on a steady temperature (be generally 160 ℃); Hyperchannel A/D Acquisition Circuit is to three road MEMS flow chips circulate gating, data acquisition, converts the signal of chip internal temperature sensor to digital signal, and exports to single-chip microcomputer; Single-chip microcomputer reads in the wind velocity signal of hyperchannel A/D Acquisition Circuit output, and carried out curve fitting by least square fitting method, calculate air speed value on all directions row vector of going forward side by side synthetic, obtain the space vector value of wind speed, then use the temperature-humidity signal that reads from the humiture module, air speed value is carried out the humiture correction, provide final air speed value; Single-chip microcomputer is exported to LCD MODULE with the wind speed, temperature, the humidity value that calculate, shows in real time; The user can also on demand, carry out data by standard communication module (GPRS communication module or USB interface) with measured air speed value, temperature, humidity equivalence and read, transmit.
Thought of the present invention is: because wind is to produce in three dimensions, move, so measuring wind speed should be measured the trivector value of wind accurately, thus, the anemometer structure that design is three-dimensional, make the air speed value on x, y, three directions of z all measure, can obtain air speed value accurately after synthesizing.After determining sensor fixing structure, use analog switch to realize that control, gating, circuit to three-way sensor switch.Then the signal that collects is inputted in single-chip microcomputer, and carried out signal processing algorithm, calculate wind speed, wind direction data, finally realize a whole set of wide region, high-precision anemometer.Adopt liquid crystal to show in real time wind speed curve and the parameters such as wind speed, wind direction on anemometer, and data can be carried out communication by GPRS wireless module, USB interface.
The present invention's advantage compared with prior art is: realized that volume is little, lightweight based on the three-dimensional anemometer of MEMS gas flow chip, and very portable, and both realized wide region, high-precision measuring wind speed, significantly saved again manufacturing cost.It has the following advantages:
1) whole circuit is light, miniature, is easy to carry about with one, and is applicable to mobile field work;
2) three-dimensional of design is surveyed the wind structure, uses three-way sensor that wind speed is all measured at space x, y, the axial component of z, can measure real three-dimensional velocity vector;
3) adopt least-squares algorithm match sensor curve, add the humiture modifying factor, improved the survey demeanour and enclosed and precision, small interference in air flow is had certain inhibition ability;
4) adopt liquid crystal display, obviously directly perceived, and enriched demonstration information, requirement of real time.
5) GPRS communication module has been realized user's telemeasurement, image data, has facilitated the use of anemometer.
Description of drawings
Fig. 1 is the three-dimensional structure schematic diagram of anemometer.
Fig. 2 is the circuit overall construction drawing of anemometer.
Fig. 3 is the main program flow chart of single-chip microcomputer.
Embodiment
A kind of Portable high-precision three-dimensional anemoscope, it is comprised of compass locating device, three road MEMS gas flow chips, constant-current source circuit, hyperchannel A/D Acquisition Circuit, temperature and humidity measurement module, single-chip microcomputer, LCD MODULE, standard communication module.Position annexation between them is: the compass locating device is installed on the anemometer surface, but indicating instrument residing orientation; Three road MEMS gas flow chips become three-dimensional vertical structure, are fixed in the anemometer surface, as shown in Figure 1; Constant-current source circuit connects MEMS gas flow chip, for it provides precise and stable electric current; Hyperchannel A/D Acquisition Circuit is sent in the output of MEMS gas flow chip; The output of hyperchannel A/D Acquisition Circuit is sent in single-chip microcomputer; The output of temperature and humidity measurement module is sent in single-chip microcomputer; The output of single-chip microcomputer is connected to LCD MODULE and standard communication module.The integrated circuit structural drawing of anemometer as shown in Figure 2, the single-chip microcomputer main program flow chart is as shown in Figure 3.
Described compass locating device, sign (direct north point) by fixed position on anemometer, with one be contained in needle free to rotate on axle and form, needle can remain under the effect of terrestrial magnetic field on the tangential direction of magnetic meridian, the arctic of needle (N) points to the geographical arctic.When the user uses anemometer, adjust the direction of anemometer, make the arctic pointer (N) of needle refer on the direct north point of anemoscope, thus the positive North facing of anemometer, the orientation of itself can be determined.The sign of this fixed position is the circular black identification point on anemometer surface; This needle is the commercial product of choosing on demand.
Described three road gas MEMS flow chips, consist of three-dimensional vertical structure by three MEMS flow chips, when the positive North facing of anemometer is placed (arctic pointer of needle refers on direct north point in anemometer), the position of three MEMS flow chips is respectively: be parallel to ground level parallel with magnetic meridian, be parallel to ground level vertical with magnetic meridian, perpendicular to ground level.MEMS flow chip internal contains the low-grade fever source, remaining under the effect of constant current source on a stationary temperature, make the space of this chip top form definite temperature field, when air flows through chip with different speed, different variations also will occur in the temperature field, the temperature sensor on this chip can record this variation, and the measured temperature value is passed to hyperchannel A/D Acquisition Circuit.This three road gas MEMS flow chip is the commercial product of choosing on demand.Concrete model is: Posifa Flow Sensor.
Described constant-current source circuit is comprised of constant current source chip, control line.Relation is therebetween: single-chip microcomputer carries out switch by control pair constant current source chip to be controlled, thus make the constant current source chip to the low-grade fever source of MEMS flow chip internal stablize, heating accurately, can keep the low-grade fever source a certain to fixed temperature on.This constant current source chip is LT3092; This control line is single plain conductor.
Described hyperchannel A/D Acquisition Circuit is comprised of analog switch, accurate voltage change-over circuit, A/D conversion chip, and wherein analog switch is used for channel selecting, and single-chip microcomputer is by control simulation switch circulation gating three road MEMS flow chips, and data acquisition is carried out in timesharing; The accurate voltage change-over circuit is converted to the required supply voltage of A/D conversion chip with supply voltage, for the A/D conversion provides precise and stable reference voltage; The A/D conversion chip is converted to digital output with the analog voltage amount (temperature signal) of input, offers single-chip microcomputer and processes.This analog switch is chip ADG734; This accurate voltage change-over circuit is comprised of chip LT1790BC96 and filter capacitor; This A/D conversion chip is AD7699.
Described temperature and humidity measurement module is comprised of temperature sensor DS18B20 chip, humidity sensor DHT11 chip.Wherein, temperature sensor DS18B20 can be converted to digital signals format with temperature signal, is delivered in single-chip microcomputer by unibus and processes; Humidity sensor DHT11 transfers current humidity value to digital signal, passes to single-chip microcomputer and processes.Record current humiture value, be used for doing the data correction when wind speed calculates, improve the degree of accuracy of measuring wind speed.
Described single-chip microcomputer, processor for whole circuit, its major function is, control the break-make of constant-current source circuit, gating hyperchannel A/D Acquisition Circuit, the output signal of reception A/D conversion chip, calculate the corresponding air speed value of temperature variation curve, and the output signal of reception temperature and humidity measurement module, air speed value is carried out the humiture correction, at last final space wind vector value is exported to liquid crystal display, communication module.The model of this single-chip microcomputer is MSP430F2471.
Described LCD MODULE is comprised of liquid crystal display, liquid-crystal controller, winding displacement.Wherein, winding displacement comprises data line, control signal wire, connects single-chip microcomputer and liquid-crystal controller, and by the decoding of liquid-crystal controller, single-chip microcomputer sends the output of instruction and Data Control liquid crystal display.LCD MODULE can show the parameters such as wind speed change curve, humiture, wind direction in real time, and effect is clear, directly perceived.The model of this liquid crystal display is DT24064; The model of this liquid-crystal controller is T6963; The specification of this winding displacement is the grey winding displacement of 2.54mm spacing 20 pins.
Described standard communication module is comprised of GPRS wireless module, USB communication interface.The GPRS wireless communication module, long transmission distance, communication robust is high, can realize real-time, the wireless transmission of wind speed, wind direction data, uses to surveying wind unit so that data to be provided expediently; USB communication interface standard, the transmission of data is stable, quick, easy to use.
As shown in Figure 1, Portable high-precision three-dimensional anemoscope uses 3 MEMS gas flow chips, places respectively on the three-dimensional perpendicular direction in space, with the space vector value of measuring wind.Mark direct north point, when the user uses, place anemoscope by proper orientation on anemoscope, makes the north orientation pointer (N) of compass refer on the direct north point of anemoscope, and so, the orientation of anemoscope itself can be determined.Thereby as can be known, the MEMS gas flow chip of placing by the three-dimensional perpendicular direction in figure, the orientation of this moment is respectively: be parallel to ground level parallel with the earth magnetism meridian line, be parallel to ground level vertical with the earth magnetism meridian line, perpendicular to ground level.Every MEMS gas flow chip records the air speed value on its position, and synthesizes, and can obtain directions, determine the space wind vector value of numerical value.
As shown in Figure 2, Portable high-precision three-dimensional anemoscope, the flow sensor on the vertical direction of three, space is system's input.Concrete grammar of the present invention is: at first flow sensor applies steady current, the resistance wire in heating sensor, and keep it to be stabilized on a certain steady temperature; The temperature measuring channel of three MEMS gas flow chips of cyclic switching afterwards gathers fast the numerical value of chip internal temperature sensor, and carries out sending in single-chip microcomputer after high-precision A/D conversion; Provide the temperature variation curve of three groups of sensors, and carry out analyzing and processing in conjunction with current environment temperature, humidity data, carry out afterwards three-dimensional and synthesize, finally calculate current space vector air speed value.The data such as the air speed value that calculates, temperature curve can be carried out liquid crystal display, or send into host computer or other designated equipments by network interface.
As shown in Figure 3, the single-chip microcomputer main program flow after completing initialization, namely enters the flow data collector link, and this link comprises: the gating constant current source heats chip internal low-grade fever source, makes the low-grade fever source remain on a steady temperature; The gating sampling channel, the data of acquisition chip internal temperature sensor; Read through the temperature data after high-precision A/D; Gather afterwards current ambient temperature and humidity data; By the change of temperature field curve of least square fitting MEMS gas flow chip internal, and through after the humiture correction, the air speed value on three directions is carried out vector synthesize, finally obtain accurate air speed value; Air speed value, humiture value are presented on liquid crystal display, and draw the wind speed change curve.Repeat above process.
Claims (9)
1. Portable high-precision three-dimensional anemoscope, it is characterized in that: it is comprised of compass locating device, three road MEMS gas flow chips, constant-current source circuit, hyperchannel A/D Acquisition Circuit, temperature and humidity measurement module, single-chip microcomputer, LCD MODULE and standard communication module, the compass locating device is installed on the anemometer surface, indicating instrument residing orientation; Three road MEMS gas flow chips become three-dimensional vertical structure, are fixed in the anemometer surface; Constant-current source circuit connects three road MEMS gas flow chips, for it provides precise and stable electric current; Hyperchannel A/D Acquisition Circuit is sent in the output of three road MEMS gas flow chips; The output of hyperchannel A/D Acquisition Circuit is sent in single-chip microcomputer; The output of temperature and humidity measurement module is sent in single-chip microcomputer; The output of single-chip microcomputer is connected to LCD MODULE and standard communication module;
Described compass locating device, be that direct north point and one are contained in the needle that freely rotates on axle and form by the sign of fixed position on anemometer, needle can remain under the effect of terrestrial magnetic field on the tangential direction of magnetic meridian, the arctic N of needle points to the geographical arctic, when the user uses anemometer, adjust the direction of anemometer, make the arctic pointer N of needle refer on the direct north point of anemoscope, thereby the positive North facing of anemometer, the orientation of itself is determined; The sign of this fixed position is the circular black identification point on anemometer surface, and this needle is the commercial product of choosing on demand;
Described three road MEMS gas flow chips, consist of three-dimensional vertical structure by three MEMS flow chips, when the positive North facing of anemometer was placed, the position of three MEMS flow chips was respectively: be parallel to ground level parallel with magnetic meridian, be parallel to ground level vertical with magnetic meridian, perpendicular to ground level; MEMS flow chip internal contains the low-grade fever source, remaining under the effect of constant-current source circuit on a stationary temperature, make the space of this chip top form definite temperature field, when air flows through this chip with different speed, different variations also will occur in the temperature field, the temperature sensor on this chip namely records this variation, and the measured temperature value is passed to hyperchannel A/D Acquisition Circuit;
Described constant-current source circuit is comprised of constant current source chip, control line; Relation is therebetween: single-chip microcomputer carries out switch by control pair constant current source chip to be controlled, thus make the constant current source chip to the low-grade fever source of MEMS flow chip internal stablize, heating accurately, can keep the low-grade fever source a certain to fixed temperature on; This control line is single plain conductor;
Described hyperchannel A/D Acquisition Circuit is comprised of analog switch, accurate voltage change-over circuit and A/D conversion chip, and analog switch is used for channel selecting, and single-chip microcomputer is by control simulation switch circulation gating three road MEMS gas flow chips, and data acquisition is carried out in timesharing; The accurate voltage change-over circuit is converted to the required supply voltage of A/D conversion chip with supply voltage, for the A/D conversion chip provides precise and stable reference voltage; The A/D conversion chip is that temperature signal is converted to digital output with the analog voltage amount of input, offers single-chip microcomputer and processes; This accurate voltage change-over circuit is comprised of chip LT1790BC96 and filter capacitor, interconnects therebetween;
Described temperature and humidity measurement module is comprised of temperature sensor DS18B20 chip, humidity sensor DHT11 chip, and is independent mutually between the two, concurrent working, and the output data are to single-chip microcomputer; Wherein, temperature sensor DS18B20 is converted to digital signals format with temperature signal, is delivered in single-chip microcomputer and processes; Humidity sensor DHT11 transfers current humidity value to digital signal, passes to single-chip microcomputer and processes, and records current humiture value, is used for doing the data correction when wind speed calculates, and improves the degree of accuracy of measuring wind speed;
Described single-chip microcomputer, processor for whole circuit, its function is, control the break-make of constant-current source circuit, gating hyperchannel A/D Acquisition Circuit, the output signal of reception A/D conversion chip, calculate the corresponding air speed value of temperature variation curve, and the output signal of reception temperature and humidity measurement module, air speed value is carried out the humiture correction, at last final space wind vector value is exported to liquid crystal display and standard communication module;
Described LCD MODULE is comprised of liquid crystal display, liquid-crystal controller and winding displacement, and winding displacement comprises data line, control signal wire, connects single-chip microcomputer and liquid-crystal controller, and by the decoding of liquid-crystal controller, single-chip microcomputer sends the output of instruction and Data Control liquid crystal display; LCD MODULE shows wind speed change curve, humiture, wind direction parameter in real time, and effect is clear, directly perceived;
Described standard communication module is comprised of GPRS wireless module, USB communication interface, and is separate between it, concurrent working; The GPRS wireless communication module, long transmission distance, communication robust is high, realizes real-time, the wireless transmission of wind speed, wind direction data, uses to surveying wind unit so that data to be provided expediently; USB communication interface standard, the transmission of data is stable, quick, easy to use.
2. a kind of Portable high-precision three-dimensional anemoscope according to claim 1, it is characterized in that: the model of this three road MEMS gas flow chip is: Posifa Flow Sensor.
3. a kind of Portable high-precision three-dimensional anemoscope according to claim 1, it is characterized in that: this constant current source chip is LT3092.
4. a kind of Portable high-precision three-dimensional anemoscope according to claim 1, it is characterized in that: this analog switch is chip ADG734.
5. a kind of Portable high-precision three-dimensional anemoscope according to claim 1, it is characterized in that: this A/D conversion chip is AD7699.
6. a kind of Portable high-precision three-dimensional anemoscope according to claim 1, it is characterized in that: the model of this single-chip microcomputer is MSP430F2471.
7. a kind of Portable high-precision three-dimensional anemoscope according to claim 1, it is characterized in that: the model of this liquid crystal display is DT24064.
8. a kind of Portable high-precision three-dimensional anemoscope according to claim 1, it is characterized in that: the model of this liquid-crystal controller is T6963.
9. a kind of Portable high-precision three-dimensional anemoscope according to claim 1, it is characterized in that: the specification of this winding displacement is the grey winding displacement of 2.54mm spacing 20 pins.
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| JP6673667B2 (en) * | 2015-10-28 | 2020-03-25 | オムロン株式会社 | Airspeed measurement system |
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| CN108490211A (en) * | 2018-04-10 | 2018-09-04 | 中物联（天津）科技发展有限公司 | A kind of micro radio anemoclinograph |
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| CN112083188B (en) * | 2020-07-24 | 2021-06-22 | 南京航空航天大学 | Wind speed sensing actuator and working method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101271164A (en) * | 2007-03-21 | 2008-09-24 | 中国科学院电子学研究所 | Guiding type wind direction and wind velocity sensor |
| CN101059528A (en) * | 2007-05-11 | 2007-10-24 | 东南大学 | Cross structure two-D wind speed wind direction sensor and its preparation method |
| CN101349708A (en) * | 2008-07-04 | 2009-01-21 | 东南大学 | Micro-mechanical two-dimension wind speed and wind direction sensor and signal processing circuit thereof |
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