CN205748772U - Wind pressure sensor - Google Patents
Wind pressure sensor Download PDFInfo
- Publication number
- CN205748772U CN205748772U CN201620671098.8U CN201620671098U CN205748772U CN 205748772 U CN205748772 U CN 205748772U CN 201620671098 U CN201620671098 U CN 201620671098U CN 205748772 U CN205748772 U CN 205748772U
- Authority
- CN
- China
- Prior art keywords
- magnet
- pressure sensor
- installing hole
- wind pressure
- locating dowel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- Measuring Fluid Pressure (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
A kind of wind pressure sensor.It is characterized in that: described push pedal center is provided with locating dowel, described locating dowel one end is placed in the second cavity volume through lower cover；Described locating dowel two ends are installed with the first Magnet, the second Magnet, described first Magnet and the second Magnet homopolarity respectively and arrange in opposite directions；Connecting Hall element in described PCB, described Hall element is placed between the first Magnet and the second Magnet.Have an advantage in that employing the first Magnet and two Magnet of the second Magnet, during work, first Magnet, relative distance between the second Magnet and Hall element produce change simultaneously, the change making magnetic field intensity is proportional with the change of distance, make output voltage proportional with distance change, there is the preferable linearity, meet client's requirement to wind pressure sensor performance.
Description
Technical field
This utility model relates to a kind of sensor, is specifically related to a kind of wind pressure sensor.
Background technology
Wind pressure sensor is a kind of sensor most commonly seen in industrial practice, is again little differential pressure sensor, extensively applies
In various industry automatic control environment.
The operation principle of wind pressure sensor is that the pressure of wind pressure sensor directly acts on diaphragm, makes diaphragm produce and is situated between
The micrometric displacement that matter is directly proportional, makes the resistance of sensor change, and by this change conversion one corresponding standard signal of output.
Chinese patent (Authorization Notice No.: CN 205157103 U, authorized announcement date: 2016.04.13) discloses a kind of use
In the sensor of blast detection, diaphragm assembly arranges Magnet, hall device is set bottom back casing, when diaphragm assembly is subject to
Pressing when making, the distance between Magnet and hall device produces change, by hall principle real transmission signal.
But the structure of this single Magnet, Magnet is not just becoming with the change of output voltage with the change of hall device distance
Ratio, poor linearity, it is impossible to meet client's requirement to wind pressure sensor performance.
Utility model content
In order to overcome the deficiency of background technology, this utility model provides a kind of wind pressure sensor, solves existing blast sensing
The problem of device poor linearity.
The technical scheme that this utility model is used: a kind of wind pressure sensor, including shell, diaphragm, push pedal, pressure bullet
Spring, PCB；Described shell includes upper cover, lower cover, sealing lid, and described upper cover seals with lower cover and coordinates composition the first cavity volume,
Described lower cover coordinates composition the second cavity volume with seal cap sealing；Described diaphragm is connected with the outward flange of push pedal, and is located in upper cover
And between lower cover, the first cavity volume is separated into two chambers；Described compression spring is supported between push pedal and upper cover；Described PCB
Circuit board is installed in the second cavity volume；Described push pedal center is provided with locating dowel, and described locating dowel one end is placed in the through lower cover
In two cavity volumes；Described locating dowel two ends are installed with the first Magnet, the second Magnet, described first Magnet and the second Magnet respectively
Homopolarity is arranged in opposite directions；Connecting Hall element in described PCB, described Hall element is placed in the first Magnet and the second magnetic
Between ferrum.
Center, described locating dowel two ends is respectively equipped with the first installing hole, the second installing hole, described first Magnet and the second magnetic
Tie Tong crosses the mode of secure fit and is embedded in the first installing hole and the second installing hole；Described second mounting hole site is in the second cavity volume
In, its side is provided with the open slot along locating dowel axial direction, described Hall element through open slot be placed in the first Magnet with
Between second Magnet.
Described second installing hole inwall is provided with the positioning bar that some circumferences are evenly arranged.
Between described first Magnet and the first installing hole, it is equipped with freezing plastic between the second Magnet and the second installing hole and carries out
Solidification.
Ultrasonic sealing is passed through between described upper cover and lower cover.
Described upper cover center is provided with set screw, and described compression spring is set in set screw.
The beneficial effects of the utility model are: use the first Magnet and two Magnet of the second Magnet, during work, the first magnetic
Ferrum, relative distance between the second Magnet and Hall element produce change simultaneously so that the change of magnetic field intensity and distance
Change proportional so that output voltage is proportional with distance change, has the preferable linearity, meets client to wind pressure sensor
The requirement of performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment wind pressure sensor.
Fig. 2 is the structural representation of this utility model embodiment push pedal.
Fig. 3 is that the removal sealing of this utility model embodiment is covered and the structural representation of wind pressure sensor after the second Magnet.
Fig. 4 is the enlarged diagram in Fig. 3 at A.
1-shell in figure, 11-upper cover, 12-lower cover, 13-seals lid, 2-diaphragm, 3-push pedal, 31-locating dowel, 311-first
Installing hole, 312-the second installing hole, 313-open slot, 314-positioning bar, 4-compression spring, 5-PCB circuit board, 6-the first magnetic
Ferrum, 7-the second Magnet, 8-Hall element, 9-set screw.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model embodiment is described further:
As it can be seen, a kind of wind pressure sensor, including shell 1, diaphragm 2, push pedal 3, compression spring 4, PCB 5；Institute
Stating shell 1 to include upper cover 11, lower cover 12, seal lid 13, described upper cover 11 seals with lower cover 12 and coordinates composition the first cavity volume, described
Lower cover 12 coordinates composition the second cavity volume with sealing lid 13 sealing；Described diaphragm 2 is connected with the outward flange of push pedal 3, and is located in
Between lid 11 and lower cover 12, the first cavity volume is separated into two chambers；Described compression spring 4 be supported in push pedal 3 and upper cover 11 it
Between；Described PCB 5 is installed in the second cavity volume；
Described push pedal 3 center is provided with locating dowel 31, and described locating dowel 31 one end is placed in the second cavity volume through lower cover 12；
Described locating dowel 31 two ends are installed with first Magnet the 6, second Magnet 7 respectively, and described first Magnet 6 and the second Magnet 7 are same
Pole is arranged in opposite directions；Connecting Hall element 8 in described PCB 5, described Hall element 8 is placed in the first Magnet 6 and second
Between Magnet 7.
Upper cover 11 is provided with negative pressure cavity, and lower cover 12 is provided with malleation chamber, and when producing negative pressure in upper cover 11, diaphragm 2 can drive push pedal 3
Overcoming compression spring 4 action, push pedal 3 can drive first Magnet the 6, second Magnet 7 action simultaneously, described first Magnet 6 away from
Hall element 8, the second the most relatively close Hall element of Magnet 78, first Magnet the 6, second Magnet 7 and Hall element 8
Between relative distance produce change simultaneously so that the change of magnetic field intensity is proportional with the change of distance so that output voltage
Proportional with distance change, there is the preferable linearity, meet client's requirement to wind pressure sensor performance.
As it can be seen, center, described locating dowel 31 two ends is respectively equipped with first installing hole the 311, second installing hole 312, described
First Magnet 6 and the second Magnet 7 are embedded in the first installing hole 311 and the second installing hole 312 by the way of secure fit；Described
Second installing hole 312 is positioned at the second cavity volume, and its side is provided with the open slot 313 along locating dowel 31 axial direction, described Hall
Sensor 8 is placed in the first Magnet 6 and the second Magnet 7 through open slot 313.Rational in infrastructure, and the first Magnet 6, second
Magnet 7, Hall element 8 are installed very convenient,.
Further, between described first Magnet 6 and the first installing hole 311, the second Magnet 7 and the second installing hole 312 it
Between be equipped with freezing plastic and solidify, further ensure that first Magnet the 6, second Magnet 7 is fixed.
As it can be seen, described second installing hole 312 inwall is provided with the positioning bar 314 that some circumferences are evenly arranged, to second
Magnet 7 plays an axial positioning action.
It addition, pass through ultrasonic sealing between described upper cover 11 and lower cover 12, it is ensured that close between upper cover 11 and lower cover 12
Envelope effect.
Described upper cover 11 center is provided with set screw 9, and described compression spring 4 is set in set screw 9, by regulation spiral shell
The pressure size of compression spring 4 can be finely adjusted by silk 9.
Embodiment is not construed as the restriction to utility model, but any based on spirit improvements introduced of the present utility model,
All should be within protection domain of the present utility model.
Claims (6)
1. a wind pressure sensor, including shell (1), diaphragm (2), push pedal (3), compression spring (4), PCB (5)；
Described shell (1) includes upper cover (11), lower cover (12), seals lid (13), and described upper cover (11) seals with lower cover (12) joins
Being combined into the first cavity volume, described lower cover (12) coordinates composition the second cavity volume with sealing lid (13) sealing；
Described diaphragm (2) is connected with the outward flange of push pedal (3), and is located between upper cover (11) and lower cover (12), holds first
Chamber is separated into two chambers；
Described compression spring (4) is supported between push pedal (3) and upper cover (11)；
Described PCB (5) is installed in the second cavity volume；
It is characterized in that: described push pedal (3) center is provided with locating dowel (31), described locating dowel (31) one end through lower cover (12) and
It is placed in the second cavity volume；
Described locating dowel (31) two ends are installed with the first Magnet (6), the second Magnet (7) respectively, described first Magnet (6) with
Second Magnet (7) homopolarity is arranged in opposite directions；
Connecting Hall element (8) in described PCB (5), described Hall element (8) is placed in the first Magnet (6) and the
Between two Magnet (7).
Wind pressure sensor the most according to claim 1, it is characterised in that: described locating dowel (31) center, two ends is respectively equipped with
First installing hole (311), the second installing hole (312), described first Magnet (6) and the second Magnet (7) side by secure fit
It is interior with the second installing hole (312) that formula is embedded in the first installing hole (311)；
Described second installing hole (312) is positioned at the second cavity volume, and its side is provided with the open slot along locating dowel (31) axial direction
(313), described Hall element (8) is placed in the first Magnet (6) and the second Magnet (7) through open slot (313).
Wind pressure sensor the most according to claim 2, it is characterised in that: described second installing hole (312) is if inwall is provided with
The positioning bar (314) that dry circumference is evenly arranged.
Wind pressure sensor the most according to claim 2, it is characterised in that: described first Magnet (6) and the first installing hole
(311), between, it is equipped with freezing plastic between the second Magnet (7) and the second installing hole (312) and solidifies.
Wind pressure sensor the most according to claim 1, it is characterised in that: pass through between described upper cover (11) and lower cover (12)
Ultrasonic sealing.
Wind pressure sensor the most according to claim 1, it is characterised in that: described upper cover (11) center is provided with set screw
(9), described compression spring (4) is set in set screw (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620671098.8U CN205748772U (en) | 2016-06-30 | 2016-06-30 | Wind pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620671098.8U CN205748772U (en) | 2016-06-30 | 2016-06-30 | Wind pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205748772U true CN205748772U (en) | 2016-11-30 |
Family
ID=57382073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620671098.8U Withdrawn - After Issue CN205748772U (en) | 2016-06-30 | 2016-06-30 | Wind pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205748772U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105938035A (en) * | 2016-06-30 | 2016-09-14 | 浙江华地电子有限公司 | Wind pressure sensor |
-
2016
- 2016-06-30 CN CN201620671098.8U patent/CN205748772U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105938035A (en) * | 2016-06-30 | 2016-09-14 | 浙江华地电子有限公司 | Wind pressure sensor |
| CN105938035B (en) * | 2016-06-30 | 2019-03-19 | 浙江华地电子有限公司 | Wind pressure sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161130 Effective date of abandoning: 20190319 |