CN103529239A - Suspended three-dimensional wind speed and direction sensor structure - Google Patents
Suspended three-dimensional wind speed and direction sensor structure Download PDFInfo
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- CN103529239A CN103529239A CN201310531020.7A CN201310531020A CN103529239A CN 103529239 A CN103529239 A CN 103529239A CN 201310531020 A CN201310531020 A CN 201310531020A CN 103529239 A CN103529239 A CN 103529239A
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Abstract
The invention discloses a suspended three-dimensional wind speed and direction sensor structure. A central wind induction device is adopted, and a bottom elastic structure is driven to be correspondingly strained with wind speed and direction, so that a strain sensor fitting the elastic structure is deformed to generate an output. The suspended three-dimensional wind speed and direction sensor structure provided by the invention is simple in principle, can be used for monitoring three-dimensional wind speed and direction, and is convenient to mount, low in cost, low in temperature drift and suitable for the needs of portable and mobile measurement.
Description
Technical field
The present invention relates to wind speed and direction pick-up unit, relate in particular to a kind of hanging type tri-dimensional wind speed wind direction sensor construction.
Background technology
Wind speed, wind direction are the very important parameters of reaction weather condition, and the production of environmental monitoring, artificial atmosphere and industrial or agricultural is had to material impact, and therefore quick and precisely measuring wind speed and direction has important practical significance.Traditional vane and weathervane are widely used detection means still at present, but these mechanical hook-ups are easy to wear because having moving-member, have volume large simultaneously, expensive, need the shortcomings such as often maintenance.The ultrasonic air velocity transducer transmitting of typical case and detection Receiver position are fixed, and therefore structure is also larger relatively.It is little that miniature heat-flow based on MEMS process technology speed sensor has volume, and price is low, and the feature of good product consistency is the focus of hot Study on wind speed sensor for coal in recent years.But due to the high heat conductance of silicon substrate, the power consumption of this class sensor is larger, sensitivity is lower.Adopt the method for back side corrosion or front etch to form adiabatic film, can improve sensitivity, but structure is fragile, be unfavorable for postchannel process and encapsulation.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of hanging type tri-dimensional wind speed wind direction sensor construction, the structure of employing center to wind sensitivity, producing distortion drives the symmetrical elasticity sensitive structure of placing of bottom centre stressed, to detect wind speed and direction, structure is small and exquisite simple, highly sensitive, not easy to wear and low in energy consumption.
Technical scheme: for achieving the above object, the technical solution used in the present invention is:
A type tri-dimensional wind speed wind direction sensor construction, comprises that base plate, two fixed pedestal structures, wind-engagings can produce sense wind structure and the elastic rope of displacement;
Described fixed pedestal structure comprises fixed pedestal, the flexible diaphragm of surface coverage at fixed pedestal, relevant position, center fixed pedestal and elastic thin film offers circular hole, root in elastic thin film's deformable position is provided with a strain gauge, described two fixed pedestal structures are identical but face to face and vertically aim at, and the elastic thin film position of two fixed pedestal structures is relative; The fixed pedestal that note is positioned at plane below is bottom fixed pedestal, and the fixed pedestal that is positioned at plane top is top fixed pedestal, and the strain gauge that is positioned at plane below is bottom strain gauge, and the strain gauge that is positioned at plane top is top strain gauge;
Described bottom fixed pedestal is fixed on base plate, is provided with four vertical elastic operation strip on the fixed pedestal of bottom, and the lower end of described elastic operation strip is fixed on the fixed pedestal of bottom, upper end free; Described four elastic operation strip form square structure and arrange, in described square structure, be placed with a hard ball, described hard ball is inscribed within this square structure; Root outside in each elastic operation strip is provided with an orientation strain gauge, in the direction of the clock, remembers that respectively four orientation strain gauges are the first strain gauge, the second strain gauge, tertiary stress sensor and four strain gauges;
One end of an elastic rope is connected with an elastic telescopic stiff end, and the other end, is fixed with hard ball upwards successively through after the circular hole bottom fixed pedestal and elastic thin film from below; One end of another root elastic rope is connected with hard ball, and the other end is connected with the lower end of sense wind structure; One end of an elastic rope is connected with the upper end of sense wind structure again, the other end from below upwards pass successively elastic thin film and top fixed pedestal and circular hole after, be connected with another elastic telescopic stiff end; During original state, two tie points of described hard ball and two elastic ropes are positioned at the two ends of same vertical diameter, all elastic ropes are in straining not relaxed state, sense wind structure is positioned at the center of two fixed pedestal structure vertical directions, the equivalent diameter of described elastic telescopic stiff end is greater than circular hole, and the elastic telescopic stiff end that is positioned at below is subject to downward pressure and is more than or equal to all the time zero, the elastic telescopic stiff end that is positioned at top is subject to upwarding pressure and is more than or equal to all the time self gravitation.
Preferably, described sense wind structure is light hollow spheroid or vertical ellipsoid (being the vertical ellipsoid of major axis), and two tie points of described sense wind structure and two elastic ropes are positioned at the two ends of same vertical axis.
Preferably, described base plate is flat square or circular configuration, and described bottom fixed pedestal is fixed on the middle part of base plate.
Preferably, on described base plate, be fixed with fixing support rack, described top fixed pedestal is fixed on fixing support rack.
Preferably, described four orientation strain gauges, top strain gauge and bottom strain gauge all can adopt metal strain plate or semiconductor pressure resistance to realize, reliable and cost is low; More preferred, described four orientation strain gauges adopt resistance type sensor, and it is convenient to drive, and output voltage anti-interference is good, low in energy consumption.
Sense wind structure can be with wind-force size and direction wobble deviation center in wind field, by elastic rope, drive bottom hard ball extruding elastic operation strip, thereby produce stress at 1-2 elastic operation strip root, corresponding orientation strain gauge is strain resistor structure, when work, pass into certain electric current, the stress of root will make this orientation strain gauge produce the voltage signal relevant to stress intensity; By measuring four voltage signal sizes on orientation strain gauge, by suitable algorithm and demarcation, just can obtain the information of horizontal wind speed and wind direction; By top strain gauge and bottom strain gauge, can detect elastic rope pulling force size and situation of change simultaneously, thereby judge non-horizontal wind speed information.
Beneficial effect: hanging type tri-dimensional wind speed wind direction sensor construction provided by the invention, adopt centre wind sensitive structure to drive the stress detection device of horizontal and vertical direction, wind-force and wind speed that can sensing different directions, have following advantage: 1, one-piece construction is comprised of pedestal, sense wind structure and strain gauge, principle is simple, simple in structure, volume is little is easy to carry and easy for installation; 2, by the sense wind apparatus to wind sensitivity, drive bottom strain device can realize easily the judgement of wind direction, by changing measurement range, improve measuring accuracy appropriate design such as material and sense wind structures; 3, adopt the symmetrical detection of strain gauge, ambient humidity and temperature impact are very little.
Accompanying drawing explanation
Fig. 1 is side-looking structural representation of the present invention;
Fig. 2 is the sectional view of AA ' in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
Be a kind of hanging type tri-dimensional wind speed wind direction sensor construction as shown in Figure 1 and Figure 2, comprise that base plate 1, two fixed pedestal structures, wind-engagings can produce sense wind structure 8 and the elastic rope 7 of displacement;
Described fixed pedestal structure comprises fixed pedestal, the flexible diaphragm 11 of surface coverage at fixed pedestal, at fixed pedestal and relevant position, elastic thin film 11 center, offer circular hole, the root in elastic thin film 11 deformable positions is provided with a strain gauge;
Fixing support rack 9 one end of the side of described base plate 1 and a L-type are fixed, and top fixed pedestal 22 is fixed with the other end of fixing support rack 9, and described bottom fixed pedestal 21 is fixed on base plate 1 middle part; Described two fixed pedestal structures look like to fix with respect to a level crossing and vertically aim at, and elastic thin film 11 positions of two fixed pedestal structures are relative; The fixed pedestal that note is positioned at plane below is bottom fixed pedestal 21, the fixed pedestal that is positioned at plane top is top fixed pedestal 22, the strain gauge that is positioned at plane below is bottom strain gauge 41, and the strain gauge that is positioned at plane top is top strain gauge 42;
On bottom fixed pedestal 21, be provided with four vertical elastic operation strip 5, the lower end of described elastic operation strip 5 is fixed on bottom fixed pedestal 21, upper end free; Described four elastic operation strip 5 form square structure and arrange, in described square structure, be placed with a hard ball 6, described hard ball 6 is inscribed within this square structure; Root outside in each elastic operation strip 5 is provided with an orientation strain gauge, in the direction of the clock, remember that respectively four orientation strain gauges are the first strain gauge 31, the second strain gauge 32, tertiary stress sensor 33 and four strain gauges 34;
One end of an elastic rope 7 is connected with an elastic telescopic stiff end 10, and the other end, is fixed with hard ball 6 upwards successively through after the circular hole bottom fixed pedestal 21 and elastic thin film 11 from below; One end of another root elastic rope 7 is connected with hard ball 6, and the other end is connected with the lower end of sense wind structure 8; One end of an elastic rope 7 is connected with the upper end of sense wind structure 8 again, the other end from below upwards pass successively elastic thin film 11 and top fixed pedestal 22 and circular hole after, be connected with another elastic telescopic stiff end 10; During original state, two tie points of described hard ball 6 and two elastic ropes 7 are positioned at the two ends of same vertical diameter, all elastic ropes 7 are in straining not relaxed state, sense wind structure 8 is positioned at the center of two fixed pedestal structure vertical directions, the equivalent diameter of described elastic telescopic stiff end 10 is greater than circular hole, and the elastic telescopic stiff end 10 that is positioned at below is subject to downward pressure and is more than or equal to all the time zero, the elastic telescopic stiff end 10 that is positioned at top is subject to upwarding pressure and is more than or equal to all the time self gravitation.
Described sense wind structure 8 is light hollow spheroid or vertical ellipsoid, and two tie points of described sense wind structure 8 and two elastic ropes 7 are positioned at the two ends of same vertical axis; Described base plate 1 is flat square or circular configuration.
When wind is blown over sensor along certain level direction, for example from 8 o'clock direction blow to 2 o'clock direction (for convenience of narration, here Plane Angle represents with the clock plate keeping flat, the position of the second strain gauge 32 in 12 respective figure 2, the position of four strain gauges 34 in 6 respective figure 2), center sense wind structure 8 moves to 2 directions, drives connected hard ball 6 to 2 directions, to produce displacement together.Hard ball 6 promotes the elastic operation strip 5 being originally affixed with it, and due to wind direction, only promotes the elastic operation strip 5 being connected with the second strain gauge 32, tertiary stress sensor 33.Due to angular relationship, larger on the force rate sensing the second strain gauge 32 on tertiary stress sensor 33; And the first strain gauge 31, four strain gauges 34 will depart from hard ball 6, do not produce deformation.Orientation strain gauge is connected and by constant voltage, is driven with fixed resistance by constant current driven or by it causing the variation of resistance due to stressed, and we can obtain Voltage-output.Meanwhile, the output of top strain gauge 42 and bottom strain gauge 41 should equate, shows now horizontal wind.The relation of the output voltage of these sensors and wind speed W and wind direction D can be calculated with following formula:
In above formula, V
21, V
22, V
23and V
24represent respectively the voltage output value on the first strain gauge 31, the second strain gauge 32, tertiary stress sensor 33 and four strain gauges 34; K represents correction factor.
Finally by quadrant, convert and certain demarcation, can obtain the information of wind speed and direction accurately.
If top strain gauge 42 and bottom strain gauge 41 output signals are not etc., mean and have non-horizontal wind, this wind is poor proportional in size and the output signal between top strain gauge 42 and bottom strain gauge 41 of vertical direction, by certain demarcation, just can obtain the wind force components size of vertical direction, in conjunction with aforesaid horizontal wind speed component, just can obtain three-dimensional velocity and wind direction.
The hanging type tri-dimensional wind speed wind direction method for manufacturing sensor structure of this case is as follows:
The first step: adopt ABS engineering plastics or metal, by Mold Making or machining, make flat-disk as shown in Figure 1 or square floor 1(edge with aperture to settle fixing support rack 9) and fixed pedestal; Adopt metal (such as stainless steel etc.) to be processed to form L-type fixing support rack 9.
Second step: paste elastic thin film 11 on fixed pedestal, adopt special glue (such as epoxy glue etc.) to paste top strain gauge 42 and bottom strain gauge 41 at the root of elastic thin film 11 deformable positions; Top strain gauge 42 and bottom strain gauge 41 can be selected metal strain plate or semiconductor pressure resistance foil gauge.
The 3rd step: get elastic rope 7(as spring etc.), circular hole through bottom fixed pedestal 21, elastic telescopic stiff end 10(screw cap structure or slightly larger than the circular hole ball joint of diameter are installed in one end), the other end is through hard ball 6(plastics or metal hard, lightweight bead) and fix with glue; Then tail end and sense wind structure 8(plastics or metal light hollow ball) be connected; The opposite of sense wind structure 8 uses the same method and connects another elastic telescopic (7), and is connected with elastic telescopic stiff end 10 through after the circular hole of top fixed pedestal 22.
The 4th step: fixed support support 9 and top fixed pedestal 22 are screwed, then are fixed on base plate 1 below; Bottom fixed pedestal 21 is screwed the center of base plate 1; Then by the elastic operation strip of 4 formed objects shapes 5, symmetry is fixed on the surrounding of hard ball 6, tangent with hard ball 6 spheres; Finally the first strain gauge 31, the second strain gauge 32, tertiary stress sensor 33 and four strain gauges 34 are attached to respectively to the bottom centre place of four elastic operation strip 5.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. a hanging type tri-dimensional wind speed wind direction sensor construction, is characterized in that: comprise that base plate (1), two fixed pedestal structures, wind-engagings can produce sense wind structure (8) and the elastic rope (7) of displacement;
Described fixed pedestal structure comprises fixed pedestal, the flexible diaphragm of surface coverage (11) at fixed pedestal, relevant position, center fixed pedestal and elastic thin film (11) offers circular hole, root in elastic thin film (11) deformable position is provided with a strain gauge, described two fixed pedestal structures are identical but face is relative with face and vertically aim at, and the elastic thin film of two fixed pedestal structures (11) position is relative; The fixed pedestal that note is positioned at plane below is bottom fixed pedestal (21), the fixed pedestal that is positioned at plane top is top fixed pedestal (22), the strain gauge that is positioned at plane below is bottom strain gauge (41), and the strain gauge that is positioned at plane top is top strain gauge (42);
Described bottom fixed pedestal (21) is fixed on base plate (1), is provided with four vertical elastic operation strip (5) on bottom fixed pedestal (21), and the lower end of described elastic operation strip (5) is fixed on bottom fixed pedestal (21), upper end is free; Described four elastic operation strip (5) form square structure and arrange, in described square structure, be placed with a hard ball (6), described hard ball (6) is inscribed within this square structure; Root outside in each elastic operation strip (5) is provided with an orientation strain gauge, in the direction of the clock, remember that respectively four orientation strain gauges are the first strain gauge (31), the second strain gauge (32), tertiary stress sensor (33) and four strain gauges (34);
One end of an elastic rope (7) is connected with an elastic telescopic stiff end (10), and the other end, is fixed with hard ball (6) upwards successively through after the circular hole bottom fixed pedestal (21) and elastic thin film (11) from below; One end of another root elastic rope (7) is connected with hard ball (6), and the other end is connected with the lower end of sense wind structure (8); One end of an elastic rope (7) is connected with the upper end of sense wind structure (8) again, the other end from below upwards pass successively elastic thin film (11) and top fixed pedestal (22) and circular hole after, be connected with another elastic telescopic stiff end (10); During original state, two tie points of described hard ball (6) and two elastic ropes (7) are positioned at the two ends of same vertical diameter, all elastic ropes (7) are in straining not relaxed state, sense wind structure (8) is positioned at the center of two fixed pedestal structure vertical directions, the equivalent diameter of described elastic telescopic stiff end (10) is greater than circular hole, and the elastic telescopic stiff end (10) that is positioned at below is subject to downward pressure and is more than or equal to all the time zero, the elastic telescopic stiff end (10) that is positioned at top is subject to upwarding pressure and is more than or equal to all the time self gravitation.
2. hanging type tri-dimensional wind speed wind direction sensor construction according to claim 1, it is characterized in that: described sense wind structure (8) is light hollow spheroid or vertical ellipsoid, and two tie points of described sense wind structure (8) and two elastic ropes (7) are positioned at the two ends of same vertical axis.
3. hanging type tri-dimensional wind speed wind direction sensor construction according to claim 1, is characterized in that: described base plate (1) is flat square or circular configuration, and described bottom fixed pedestal (21) is fixed on the middle part of base plate (1).
4. hanging type tri-dimensional wind speed wind direction sensor construction according to claim 1, is characterized in that: on described base plate (1), be fixed with fixing support rack (9), described top fixed pedestal (22) is fixed on fixing support rack (9).
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| CN105403727A (en) * | 2015-12-22 | 2016-03-16 | 无锡信大气象传感网科技有限公司 | Blade type wind direction and wind speed sensor |
| CN105466490A (en) * | 2015-12-22 | 2016-04-06 | 无锡信大气象传感网科技有限公司 | Light wind-direction and wind-speed sensor |
| CN105628963A (en) * | 2015-12-22 | 2016-06-01 | 无锡信大气象传感网科技有限公司 | Wind direction and wind speed sensor |
| CN105628964A (en) * | 2015-12-22 | 2016-06-01 | 无锡信大气象传感网科技有限公司 | Simple wind direction and wind speed sensor |
| CN105929195A (en) * | 2016-04-22 | 2016-09-07 | 王力 | Wind speed and direction sensor and wind speed and direction calculation method |
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