CN203053998U - Wind speed sensor - Google Patents
Wind speed sensor Download PDFInfo
- Publication number
- CN203053998U CN203053998U CN 201220736091 CN201220736091U CN203053998U CN 203053998 U CN203053998 U CN 203053998U CN 201220736091 CN201220736091 CN 201220736091 CN 201220736091 U CN201220736091 U CN 201220736091U CN 203053998 U CN203053998 U CN 203053998U
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- CN
- China
- Prior art keywords
- wind speed
- transmission shaft
- base
- air velocity
- circuit module
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Abstract
A wind speed sensor comprises a housing, a wind speed mechanism, a transmission shaft mechanism and a bearing mechanism, and further comprises a code wheel, a wind speed conversion circuit module and a power supply apparatus, wherein the code wheel is positioned inside the housing, is connected with the transmission shaft mechanism, and rotates as the wind speed mechanism through the transmission shaft mechanism; and the wind speed conversion circuit module is positioned inside the housing and below the code wheel, and is used for converting wind speed changes detected by the wind speed mechanism into a pulse electric signal for outputting. The wind speed conversion circuit module comprises a power supply circuit, a photoelectric conversion circuit that is connected with the power supply circuit and a frequency pulse output circuit that is connected with the photoelectric conversion circuit, wherein the photoelectric conversion circuit continuously emits infrared light to the code wheel during the rotation of the wind speed mechanism, receives the infrared light reflected by the code wheel and thus outputs a first electric signal; the frequency pulse output circuit receives the first electric signal and outputs the pulse electric signal. The power supply apparatus is connected with the wind speed conversion circuit module and supplies power to the same. The wind speed sensor is relatively high in detection precision.
Description
Technical field
The utility model relates to a kind of sensor, especially relates to a kind of air velocity transducer.
Background technology
Wind speed is the important information parameter of physical environment.Current social is paid attention to global environmental protection day by day, and wind speed also more and more need be on a large scale by in real time, accurately measure.Air velocity transducer refer to can measuring wind size sensor.Now in the technology, in order to prevent the reliability of under low temperature environment, moving of circuit, and stability, by meeting heating plate is installed near circuit, yet under the environment of some low temperatures, its mechanical rotation partly can be low excessively icing because of temperature, cause the rotating part can't operate as normal, what finally cause air velocity transducer can't be in operate as normal under the low temperature environment.In addition, the material that vane for detection of wind speed of the prior art all adopts plastics or some other lightweight and loses easily, if this vane is used in the damage that causes parts in the bigger environment of wind-force easily, therefore anti-high wind ability is relatively poor, and is inapplicable in some high wind areas.Chinese patent literature number is a kind of anti-freezing air velocity transducer for CN202177636U discloses, and wherein, comprises housing; Wind speed mechanism; Transmission shaft mechanism is connected with described wind speed mechanism; Bearning mechanism is located at described enclosure interior, is connected with described inner walls, and is connected with described transmission shaft mechanism; Wind speed change-over circuit module is used for converting the detected wind speed changes of magnetic field of described wind speed mechanism the output of to analog electrical flow; Described wind speed mechanism below is provided with the heating arrangement that is connected with described housing or described Bearning mechanism and is connected to the supply unit of its power supply with described wind speed change-over circuit module and described heating arrangement.Can prevent that the situation that transmission shaft freezes, the situation that causes sensor to work from appearring in air velocity transducer when using under low temperature environment.Yet above-mentioned air velocity transducer is owing to be to adopt the wind speed change-over circuit, convert the wind speed changes of magnetic field output of to analog electrical flow, can cause in the transfer process bigger error occurring, thereby the precision of greatly reducing finally influences the accuracy of detection of whole sensor.
The utility model content
For this reason, to be solved in the utility model is to propose the higher air velocity transducer of a kind of accuracy of detection.
A kind of air velocity transducer of the present utility model comprises:
Housing;
Wind speed mechanism;
Transmission shaft mechanism is connected with described wind speed mechanism;
Bearning mechanism is located at described enclosure interior, is connected with described inner walls, and is connected with described transmission shaft mechanism;
Also comprise:
Code-disc is positioned at described enclosure interior, is connected with described transmission shaft mechanism, and rotating with described wind speed mechanism by described transmission shaft mechanism;
Wind speed change-over circuit module is positioned at described enclosure interior, and is located at described code-disc place, is used for converting the detected wind speed variation of described wind speed mechanism to pulse electrical signal output; Wherein, wind speed change-over circuit module comprises power circuit, and the photoelectric switching circuit that is connected with described power circuit is with the frequency pulse output circuit that is connected with described photoelectric switching circuit; Continue when described photoelectric switching circuit rotates in wind speed mechanism to described code-disc emission infrared light, and receive and reflect infrared light by described code-disc, thereby export first electric signal; Described frequency pulse output circuit receives described first electric signal, and the output pulse electrical signal;
Supply unit is connected with described wind speed change-over circuit module, and is its power supply.
Above-mentioned air velocity transducer, described photoelectric switching circuit comprise transceiver photocoupler Q4 and field effect transistor Q2, and described transceiver photocoupler Q4 is connected with field effect transistor Q2.
Above-mentioned air velocity transducer, described wind speed mechanism comprises the vane support that is connected with described rotation axis and is positioned at the vane of described vane bracket end; Described air velocity transducer also comprises base mechanism, is positioned at described housing away from an end of wind speed mechanism, and fixedlys connected with described housing; Described wind speed change-over circuit module is fixedlyed connected with described inner walls or described base.
Above-mentioned air velocity transducer, described Bearning mechanism comprises: be fixed at head bearing and lower bearing on the described inner walls; Described transmission shaft mechanism comprises the transmission shaft that is connected with described vane support, and wherein said transmission shaft passes the endoporus of described head bearing and described lower bearing; Described transmission shaft mechanism comprises that also being located at described transmission shaft and described vane support connects and be used for preventing the set nut that described transmission shaft withdraws from from described Bearning mechanism on the relative other end of an end.
Above-mentioned air velocity transducer, described wind speed change-over circuit module is wind speed conversion line plate, wherein said wind speed conversion line plate is installed on the interior described base of housing;
The direction of described transmission shaft mechanism along described wind speed mechanism to described base mechanism also comprises short sleeve, major axis cover and the two footpaths locating sleeve that is sheathed on the described transmission shaft;
Described head bearing is between described short sleeve and described major axis cover, and lower bearing is positioned between described major axis cover and described two footpaths locating sleeve;
Described base mechanism comprises base and is set in base nut on the described base;
Described supply unit is the Electric plug with shutter and the cable assembly that is used for being connected with described wind speed conversion line plate of being located at described base lower end.
Technique scheme of the present utility model has the following advantages compared to existing technology:
1. air velocity transducer of the present utility model comprises code-disc, is positioned at described enclosure interior, be connected with described transmission shaft mechanism, and rotating with described wind speed mechanism by described transmission shaft mechanism; Wind speed change-over circuit module is positioned at described enclosure interior, and is located at described code-disc place, is used for converting the detected wind speed variation of described wind speed mechanism to pulse electrical signal output; Wherein, wind speed change-over circuit module comprises power circuit, and the photoelectric switching circuit that is connected with described power circuit is with the frequency pulse output circuit that is connected with described photoelectric switching circuit; Continue when described photoelectric switching circuit rotates in wind speed mechanism to described code-disc emission infrared light, and receive and reflect infrared light by described code-disc, thereby export first electric signal; Described frequency pulse output circuit receives described first electric signal, and the output pulse electrical signal; Air velocity transducer of the present utility model adopts said apparatus and parts can realize that the vane velocity of rotation is directly changed into digital signal to be exported, avoided changing into earlier in the prior art error that occurs when simulating signal converts digital signal to again, therefore, improved the precision that wind speed detects greatly.
Description of drawings
Content of the present utility model is easier clearly to be understood in order to make, and according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is air velocity transducer physical construction synoptic diagram;
Fig. 2 is air velocity transducer wind speed converting circuit structure synoptic diagram;
1-wind speed mechanism, 2-short sleeve, 3-head bearing, 4-major axis cover, location, the two footpath of 5-, 6-set nut, 7-lower bearing, 8-hexagonal locating sleeve, the 9-code-disc, 10-wind speed conversion line plate, 11-housing, 12-base, 13-base nut, 14-cable assembly, 15-rotation axis, 16-vane support, the 17-vane, Q4-photocoupler, Q2-field effect transistor, the Q1-field effect transistor, D1-diode, D3-diode
Embodiment
Embodiment 1
Air velocity transducer as shown in Figure 1 comprises: housing 11; Wind speed mechanism 1; Transmission shaft mechanism is connected with described wind speed mechanism; Bearning mechanism is located at described housing 11 inside, is connected with described housing 11 inwalls, and is connected with described transmission shaft mechanism; Also comprise: code-disc 9, be positioned at described housing 11 inside, be connected with described transmission shaft mechanism, and rotating with described wind speed mechanism by described transmission shaft mechanism; Wind speed change-over circuit module is positioned at described housing 11 inside, and is located at described code-disc 9 belows, is used for converting the detected wind speed variation of described wind speed mechanism to pulse electrical signal output; Wherein, wind speed change-over circuit module comprises power circuit, and the photoelectric switching circuit that is connected with described power circuit is with the frequency pulse output circuit that is connected with described photoelectric switching circuit; Continue when described photoelectric switching circuit rotates in wind speed mechanism to described code-disc emission infrared light, and receive the infrared light that is reflected by described code-disc, thereby export first electric signal; Described frequency pulse output circuit receives described first electric signal, and the output pulse electrical signal; Supply unit is connected with described wind speed change-over circuit module, and is its power supply.Wherein, described pulse electrical signal flows to outside digital computing system, thereby is converted into air speed value according to preset relation.
Described wind speed mechanism comprises the vane support 16 that is connected with described rotation axis 15 and the vane 17 that is positioned at described vane support 16 ends; Described air velocity transducer also comprises base mechanism, is positioned at described housing 11 away from an end of wind speed mechanism, and fixedlys connected with described housing 11; Described wind speed change-over circuit module is fixedlyed connected with described housing 11 inwalls or described base mechanism.
Described Bearning mechanism comprises: be fixed at head bearing 3 and lower bearing 7 on described housing 11 inwalls; Described transmission shaft mechanism comprises the transmission shaft (not marking) that is connected with described vane support herein, and wherein said transmission shaft passes the endoporus of described head bearing and described lower bearing; Described transmission shaft mechanism comprises that also being located at described transmission shaft and described vane support connects and be used for preventing the set nut 6 that described transmission shaft withdraws from from described Bearning mechanism on the relative other end of an end.
Described wind speed change-over circuit module is preferably wind speed conversion line plate, and wherein said wind speed conversion line plate is installed on the described base mechanism; The direction of described transmission shaft mechanism along described wind speed mechanism 1 to described base mechanism 12 also comprises short sleeve 2, major axis cover 4 and the two footpaths locating sleeve 5 that is sheathed on the described transmission shaft.Described head bearing 3 is between described short sleeve 2 and described major axis cover 4, and lower bearing 7 is positioned at 5 of described major axis cover 4 and described two footpaths locating sleeves; Location, described two footpath can also be provided with hexagonal locating sleeve 8 away from an end of described lower bearing 7, is used for described base mechanisms to location, described two footpath and comprises base 12 and be set in base nut 13 on the described base; Described supply unit is the Electric plug with shutter (herein not marking) of being located at described base lower end and the cable assembly 14 that is used for being connected with described wind speed conversion line plate 10, described cable assembly 14 is located at described base away from an end of described housing, and fixedlys connected with described base.
As shown in Figure 2, described photoelectric switching circuit is preferably one photocoupler Q4 and the field effect transistor Q2 that comprises that transmitting-receiving is connected with described power circuit respectively, and described one photocoupler Q4 is connected with field effect transistor Q2.Described power circuit is by resistance R 1, R2, R4, R7, capacitor C 1, C2, C3, and diode D1, D2, field effect transistor Q1 constitutes.Resistance R 4, diode D1 connect DC/24V supply voltage anode, the other end connecting resistance R1 of diode D1, and capacitor C 2, C3, the other end connecting resistance R7 of capacitor C 2, C3 also connects power supply ground.The G utmost point of resistance R 1 other end connecting resistance R2, field effect transistor Q1.5 pin of the D utmost point of resistance R 2 another termination field effect transistor Q1 and the S utmost point, diode D2, capacitor C 1, resistance R 5, field effect transistor Q2, the other end ground connection of diode D2 and capacitor C 1,2 pin of another termination field effect transistor Q2 of resistance R 5,2 pin of transceiver photocoupler Q4.Resistance R 8 other ends receive 1 pin of sending out one photocoupler Q4.Resistance R 9 receives the 3rd pin and the 4th pin and the ground connection of sending out one photocoupler Q4, the 3rd pin ground connection of field effect transistor Q2, and field effect transistor Q2 the 4th pin connects the G utmost point of field effect transistor Q3.Transceiver photocoupler 1 pin is anodal, and 2 pin are receiving pole, and 3 pin are emitter, and 4 pin are negative pole.The D utmost point connecting resistance R6 of field effect transistor Q3, resistance R 6 connecting resistance R3, diode D3.The S utmost point and the ground connection of another termination triode Q3 of diode D3, resistance R 3 other end output frequency (pulse) signals.
Obviously, above-described embodiment only is for example clearly is described, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And the apparent variation of being extended out thus or change still are among the protection domain of the utility model creation.
Claims (6)
1. air velocity transducer comprises:
Housing;
Wind speed mechanism;
Transmission shaft mechanism is connected with described wind speed mechanism;
Bearning mechanism is located at described enclosure interior, is connected with described inner walls, and is connected with described transmission shaft mechanism;
It is characterized in that also comprising:
Code-disc is positioned at described enclosure interior, is connected with described transmission shaft mechanism, and rotating with described wind speed mechanism by described transmission shaft mechanism;
Wind speed change-over circuit module is positioned at described enclosure interior, and is located at described code-disc place, is used for converting the detected wind speed variation of described wind speed mechanism to pulse electrical signal output; Wherein, wind speed change-over circuit module comprises power circuit, and the photoelectric switching circuit that is connected with described power circuit is with the frequency pulse output circuit that is connected with described photoelectric switching circuit; Continue when described photoelectric switching circuit rotates in wind speed mechanism to described code-disc emission infrared light, and receive and reflect infrared light by described code-disc, thereby export first electric signal; Described frequency pulse output circuit receives described first electric signal, and the output pulse electrical signal;
Supply unit is connected with described wind speed change-over circuit module, and is its power supply.
2. air velocity transducer according to claim 1 is characterized in that:
Described photoelectric switching circuit comprises transceiver photocoupler (Q4), and field effect transistor (Q2), and described transceiver photocoupler is connected with described field effect transistor.
3. air velocity transducer according to claim 1 and 2 is characterized in that:
Described wind speed mechanism comprises the vane support that is connected with described rotation axis and is positioned at the vane of described vane bracket end;
Described air velocity transducer also comprises base mechanism, is positioned at described housing away from an end of wind speed mechanism, and fixedlys connected with described housing;
Described wind speed change-over circuit module is fixedlyed connected with described inner walls or described base.
4. air velocity transducer according to claim 3 is characterized in that:
Described Bearning mechanism comprises: be fixed at head bearing and lower bearing on the described inner walls;
Described transmission shaft mechanism comprises the transmission shaft that is connected with described vane support, and wherein said transmission shaft passes the endoporus of described head bearing and described lower bearing; Described transmission shaft mechanism comprises that also being located at described transmission shaft and described vane support connects and be used for preventing the set nut that described transmission shaft withdraws from from described Bearning mechanism on the relative other end of an end.
5. according to claim 1,2 or 4 described air velocity transducers, it is characterized in that:
Described wind speed change-over circuit module is wind speed conversion line plate, and wherein said wind speed conversion line plate is installed on the interior described base of housing;
The direction of described transmission shaft mechanism along described wind speed mechanism to described base mechanism also comprises short sleeve, major axis cover and the two footpaths locating sleeve that is sheathed on the described transmission shaft;
Described head bearing is between described short sleeve and described major axis cover, and lower bearing is positioned between described major axis cover and described two footpaths locating sleeve;
Described base mechanism comprises base and is set in base nut on the described base;
Described supply unit is the Electric plug with shutter and the cable assembly that is used for being connected with described wind speed conversion line plate of being located at described base lower end.
6. air velocity transducer according to claim 3 is characterized in that:
Described wind speed change-over circuit module is wind speed conversion line plate, and wherein said wind speed conversion line plate is installed on the interior described base of housing;
The direction of described transmission shaft mechanism along described wind speed mechanism to described base mechanism also comprises short sleeve, major axis cover and the two footpaths locating sleeve that is sheathed on the described transmission shaft;
Described head bearing is between described short sleeve and described major axis cover, and lower bearing is positioned between described major axis cover and described two footpaths locating sleeve;
Described base mechanism comprises base and is set in base nut on the described base;
Described supply unit is the Electric plug with shutter and the cable assembly that is used for being connected with described wind speed conversion line plate of being located at described base lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220736091 CN203053998U (en) | 2012-12-27 | 2012-12-27 | Wind speed sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220736091 CN203053998U (en) | 2012-12-27 | 2012-12-27 | Wind speed sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203053998U true CN203053998U (en) | 2013-07-10 |
Family
ID=48736938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220736091 Expired - Lifetime CN203053998U (en) | 2012-12-27 | 2012-12-27 | Wind speed sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203053998U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776592B (en) * | 2014-01-07 | 2015-12-02 | 福耀(福建)巴士玻璃有限公司 | A kind of system and method for monitoring VPL production line vacuum leak |
-
2012
- 2012-12-27 CN CN 201220736091 patent/CN203053998U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776592B (en) * | 2014-01-07 | 2015-12-02 | 福耀(福建)巴士玻璃有限公司 | A kind of system and method for monitoring VPL production line vacuum leak |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |
|
| CX01 | Expiry of patent term |