CN105938035B - Wind pressure sensor - Google Patents
Wind pressure sensor Download PDFInfo
- Publication number
- CN105938035B CN105938035B CN201610498486.5A CN201610498486A CN105938035B CN 105938035 B CN105938035 B CN 105938035B CN 201610498486 A CN201610498486 A CN 201610498486A CN 105938035 B CN105938035 B CN 105938035B
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- CN
- China
- Prior art keywords
- magnet
- mounting hole
- wind pressure
- pressure sensor
- positioning column
- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/14—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means involving the displacement of magnets, e.g. electromagnets
Abstract
A kind of wind pressure sensor.It is characterized by: the push plate center is equipped with positioning column, described positioning column one end passes through lower cover and is placed in the second cavity；The positioning column both ends are fixedly installed with the first magnet, the second magnet respectively, and first magnet is arranged in opposite directions with the second magnet homopolarity；Hall sensor is connected in the PCB circuit board, the Hall sensor is placed between the first magnet and the second magnet.It the advantage is that using two magnet of the first magnet and the second magnet, when work, relative distance between first magnet, the second magnet and Hall sensor generates variation simultaneously, so that the variation of magnetic field strength and the variation of distance are proportional, so that output voltage is proportional with distance change, with the preferable linearity, meet requirement of the client to wind pressure sensor performance.
Description
Technical field
The present invention relates to a kind of sensors, are specifically related to a kind of wind pressure sensor.
Background technique
Wind pressure sensor is a kind of sensor most commonly seen in industrial practice, is called little differential pressure sensor, is widely applied
In various industrial automatic control environment.
The working principle of wind pressure sensor is that the pressure of wind pressure sensor directly acts on diaphragm, and diaphragm is made to generate and be situated between
The directly proportional micro-displacement of matter, makes the resistance of sensor change, and one corresponding standard signal of output is converted in the variation.
Chinese patent (Authorization Notice No.: 205157103 U of CN, authorized announcement date: 2016.04.13) discloses a kind of use
In wind pressure detection sensor, magnet is set on diaphragm assembly, back casing bottom be arranged hall device, when diaphragm assembly by
It presses when making, the distance between magnet and hall device generate variation, pass through hall principle transmitting signal in fact.
But the variation of the structure of this single magnet, magnet and hall device distance and the variation of output voltage be not at just
Than poor linearity is unable to satisfy requirement of the client to wind pressure sensor performance.
Summary of the invention
In order to overcome the shortcomings of that background technique, the present invention provide a kind of wind pressure sensor, existing wind pressure sensor line is solved
The problem of property degree difference.
The technical solution adopted in the present invention: a kind of wind pressure sensor, including shell, diaphragm, push plate, compression spring, PCB
Circuit board；The shell includes upper cover, lower cover, sealing cover, and the upper cover and lower cover sealing, which are matched, is combined into the first cavity, under described
Lid is matched with seal cap sealing is combined into the second cavity；The diaphragm and the outer edge of push plate connect, and are located in upper cover and lower cover
Between, the first cavity is separated into two chambers；The compression spring is supported between push plate and upper cover；The PCB circuit board
It is installed in the second cavity；The push plate center is equipped with positioning column, and described positioning column one end passes through lower cover and is placed in the second cavity
It is interior；The positioning column both ends are fixedly installed with the first magnet, the second magnet, first magnet and the second magnet homopolarity phase respectively
To arrangement；Connect Hall sensor in the PCB circuit board, the Hall sensor be placed in the first magnet and the second magnet it
Between.
Positioning column both ends center is respectively equipped with the first mounting hole, the second mounting hole, first magnet and the second magnetic
The mode of immovable fitting is crossed in the first mounting hole and the second mounting hole by Tie Tong；Second mounting hole is located at the second cavity
It is interior, side be equipped with along positioning column axial direction open slot, the Hall sensor pass through open slot be placed in the first magnet with
Between second magnet.
Second inner wall of the hole installing is equipped with several positioning bars being arranged circumferentially.
Freezing plastic progress is equipped between first magnet and the first mounting hole, between the second magnet and the second mounting hole
Solidification.
Pass through ultrasonic sealing between the upper cover and lower cover.
The upper cover center is equipped with adjusting screw, and the compression spring is set in adjusting screw.
The beneficial effects of the present invention are: using two magnet of the first magnet and the second magnet, when work, the first magnet,
Relative distance between two magnet and Hall sensor generates variation simultaneously, so that the variation of magnetic field strength and the variation of distance are in
Direct ratio has the preferable linearity, meets client to wind pressure sensor performance so that output voltage is proportional with distance change
It is required that.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of wind pressure sensor of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of push plate of the embodiment of the present invention.
Fig. 3 is the structural schematic diagram that the embodiment of the present invention removes wind pressure sensor after sealing cover and 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- sealing cover, 2- diaphragm, 3- push plate, 31- positioning column, 311- first
Mounting hole, the second mounting hole of 312-, 313- open slot, 314- positioning bar, 4- compression spring, 5-PCB circuit board, the first magnetic of 6-
Iron, the second magnet of 7-, 8- Hall sensor, 9- adjusting screw.
Specific embodiment
Embodiments of the present invention is further illustrated with reference to the accompanying drawing:
As shown, a kind of wind pressure sensor, including shell 1, diaphragm 2, push plate 3, compression spring 4, PCB circuit board 5；Institute
Stating shell 1 includes upper cover 11, lower cover 12, sealing cover 13, and the upper cover 11 is matched with the sealing of lower cover 12 is combined into the first cavity, described
Lower cover 12 and the sealing of sealing cover 13, which are matched, is combined into the second cavity；The diaphragm 2 is connect with the outer edge of push plate 3, and is located in
Between lid 11 and lower cover 12, the first cavity is separated into two chambers；The compression spring 4 be supported in push plate 3 and upper cover 11 it
Between；The PCB circuit board 5 is installed in the second cavity；
3 center of push plate is equipped with positioning column 31, and described 31 one end of positioning column passes through lower cover 12 and is placed in the second cavity；
31 both ends of positioning column are fixedly installed with the first magnet 6, the second magnet 7 respectively, and first magnet 6 and the second magnet 7 are same
Extremely opposite arrangement；Hall sensor 8 is connected in the PCB circuit board 5, the Hall sensor 8 is placed in the first magnet 6 and second
Between magnet 7.
Upper cover 11 is equipped with negative pressure cavity, and lower cover 12 is equipped with positive pressure chamber, and when generating negative pressure in upper cover 11, diaphragm 2 will drive push plate 3
Compression spring 4 is overcome to act, push plate 3 is able to drive the first magnet 6, the movement of the second magnet 7 simultaneously, and first magnet 6 is separate
Hall sensor 8, and the second magnet 7 then relatively close Hall sensor 8, the first magnet 6, the second magnet 7 and Hall sensor 8
Between relative distance simultaneously generate variation so that the variation of magnetic field strength and the variation of distance are proportional, so that output voltage
It is proportional with distance change, there is the preferable linearity, meet requirement of the client to wind pressure sensor performance.
As shown, the 31 both ends center of positioning column is respectively equipped with the first mounting hole 311, the second mounting hole 312, it is described
First magnet 6 and the second magnet 7 are embedded in the first mounting hole 311 and the second mounting hole 312 by way of immovable fitting；It is described
Second mounting hole 312 is located in the second cavity, and side is equipped with the open slot 313 along 31 axial direction of positioning column, the Hall
Sensor 8 is placed in the first magnet 6 and the second magnet 7 across open slot 313.It is structurally reasonable, and the first magnet 6, second
Magnet 7, Hall sensor 8 install it is very convenient,.
Further, between first magnet 6 and the first mounting hole 311, the second magnet 7 and the second mounting hole 312 it
Between be equipped with freezing plastic and solidified, it is further to guarantee that the first magnet 6, the second magnet 7 are fixed.
As shown, 312 inner wall of the second mounting hole is equipped with several positioning bars 314 being arranged circumferentially, to second
Magnet 7 plays the role of an axially position.
In addition, passing through ultrasonic sealing between the upper cover 11 and lower cover 12, it is ensured that close between upper cover 11 and lower cover 12
Seal effect.
11 center of upper cover is equipped with adjusting screw 9, and the compression spring 4 is set in adjusting screw 9, by adjusting spiral shell
Silk 9 can be finely adjusted the pressure size of compression spring 4.
Embodiment is not construed as the limitation to invention, but any based on spiritual improvements introduced of the invention, all Ying Ben
Within the protection scope of invention.
Claims (5)
1. a kind of wind pressure sensor, including shell (1), diaphragm (2), push plate (3), compression spring (4), PCB circuit board (5)；
The shell (1) includes upper cover (11), lower cover (12), sealing cover (13), and the upper cover (11) is matched with lower cover (12) sealing
It is combined into the first cavity, the lower cover (12) and sealing cover (13) sealing, which are matched, is combined into the second cavity；
The diaphragm (2) connect with the outer edge of push plate (3), and is located between upper cover (11) and lower cover (12), and first is held
Chamber is separated into two chambers；
The compression spring (4) is supported between push plate (3) and upper cover (11)；
The PCB circuit board (5) is installed in the second cavity；
It is characterized by: push plate (3) center is equipped with positioning column (31), described positioning column (31) one end passes through lower cover (12) simultaneously
It is placed in the second cavity；
Positioning column (31) both ends are fixedly installed with the first magnet (6), the second magnet (7) respectively, first magnet (6) with
Second magnet (7) homopolarity is arranged in opposite directions；
Hall sensor (8) are connected on the PCB circuit board (5), the Hall sensor (8) is placed in the first magnet (6) and the
Between two magnet (7)；Positioning column (31) the both ends center is respectively equipped with the first mounting hole (311), the second mounting hole (312),
First magnet (6) and the second magnet (7) are embedded in the first mounting hole (311) and the second mounting hole by way of immovable fitting
(312) in；Second mounting hole (312) is located in the second cavity, and side is equipped with opening along positioning column (31) axial direction
Mouth slot (313), the Hall sensor (8) are placed in the first magnet (6) and the second magnet (7) across open slot (313).
2. wind pressure sensor according to claim 1, it is characterised in that: second mounting hole (312) is if inner wall is equipped with
The dry positioning bar (314) being arranged circumferentially.
3. wind pressure sensor according to claim 1, it is characterised in that: first magnet (6) and the first mounting hole
(311) between, freezing plastic is equipped between the second magnet (7) and the second mounting hole (312) is solidified.
4. wind pressure sensor according to claim 1, it is characterised in that: pass through between the upper cover (11) and lower cover (12)
Ultrasonic sealing.
5. wind pressure sensor according to claim 1, it is characterised in that: upper cover (11) center is equipped with adjusting screw
(9), the compression spring (4) is set on adjusting screw (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610498486.5A CN105938035B (en) | 2016-06-30 | 2016-06-30 | Wind pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610498486.5A CN105938035B (en) | 2016-06-30 | 2016-06-30 | Wind pressure sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105938035A CN105938035A (en) | 2016-09-14 |
| CN105938035B true CN105938035B (en) | 2019-03-19 |
Family
ID=56872344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610498486.5A Active CN105938035B (en) | 2016-06-30 | 2016-06-30 | Wind pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105938035B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402102A (en) * | 2017-08-11 | 2017-11-28 | 浙江华地电子有限公司 | Wind pressure sensor |
| CN111307365B (en) * | 2020-03-24 | 2021-06-15 | 东莞市迈沃科技发展有限公司 | Pressure sensor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4340877A (en) * | 1979-11-17 | 1982-07-20 | Robert Bosch Gmbh | Hall generator pressure transducer |
| US4352085A (en) * | 1980-04-10 | 1982-09-28 | Robert Bosch Gmbh | Pressure transducer |
| EP0884572A1 (en) * | 1997-06-13 | 1998-12-16 | Jaeger Regulation Société Anonyme | Pressure transducer |
| CN205027477U (en) * | 2015-09-25 | 2016-02-10 | 思达文电器（深圳）有限公司 | Wind pressure minute -pressure sensor and electrical equipment thereof |
| CN205157103U (en) * | 2015-10-27 | 2016-04-13 | 马夸特开关(上海)有限公司 | A sensor for wind pressure detects |
| CN205748772U (en) * | 2016-06-30 | 2016-11-30 | 浙江华地电子有限公司 | Wind pressure sensor |
-
2016
- 2016-06-30 CN CN201610498486.5A patent/CN105938035B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4340877A (en) * | 1979-11-17 | 1982-07-20 | Robert Bosch Gmbh | Hall generator pressure transducer |
| US4352085A (en) * | 1980-04-10 | 1982-09-28 | Robert Bosch Gmbh | Pressure transducer |
| EP0884572A1 (en) * | 1997-06-13 | 1998-12-16 | Jaeger Regulation Société Anonyme | Pressure transducer |
| CN205027477U (en) * | 2015-09-25 | 2016-02-10 | 思达文电器（深圳）有限公司 | Wind pressure minute -pressure sensor and electrical equipment thereof |
| CN205157103U (en) * | 2015-10-27 | 2016-04-13 | 马夸特开关(上海)有限公司 | A sensor for wind pressure detects |
| CN205748772U (en) * | 2016-06-30 | 2016-11-30 | 浙江华地电子有限公司 | Wind pressure sensor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105938035A (en) | 2016-09-14 |
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Address after: No. 169, Wei 16th Road, Yueqing Economic Development Zone, Yueqing City, Wenzhou City, Zhejiang Province, 325604 Patentee after: ZHEJIANG HUADI ELECTRONIC Co.,Ltd. Address before: No. 237 Weiji Road, Leqing Economic Development Zone, Wenzhou City, Zhejiang Province, 325600 Patentee before: ZHEJIANG HUADI ELECTRONIC Co.,Ltd. |
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