CN108414132A - A kind of Fluid pressure detection sensor - Google Patents
A kind of Fluid pressure detection sensor Download PDFInfo
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- CN108414132A CN108414132A CN201810562300.7A CN201810562300A CN108414132A CN 108414132 A CN108414132 A CN 108414132A CN 201810562300 A CN201810562300 A CN 201810562300A CN 108414132 A CN108414132 A CN 108414132A
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- fluid pressure
- detection sensor
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- pressure detection
- magnetic field
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- 238000001514 detection method Methods 0.000 title claims abstract description 117
- 239000012530 fluid Substances 0.000 title claims abstract description 95
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 230000006978 adaptation Effects 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 238000010586 diagram Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- G01L9/16—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 by making use of variations in the magnetic properties of material resulting from the application of stress
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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
- G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The present invention relates to a kind of Fluid pressure detection sensors, by the vessel bottom that flexible sheet is fixed on to shell, post rod parts are axially displaceably arranged in capping, and in the upper end fixed magnetic component of post rod parts, the magnetic field intensity detection device of the corresponding magnetic part of setting in the top of magnetic part, flexible sheet is generated and is heaved with the fluid entered in through hole, post rod parts are pushed to move up in an axial direction, so that magnetic part generated magnetic field intensity in capping changes, and the change of magnetic field strength situation is then sent to external processor by magnetic field intensity detection device, the prevailing fluid pressure value in Fluid pressure detection sensor is calculated according to the change of magnetic field strength situation in Fluid pressure detection sensor by external processor.The Fluid pressure detection sensor is not only simple in structure, is easy to process, and structure accomplishes to be electrically isolated, and ensure that safety and detection is accurate.
Description
Technical field
The present invention relates to art of pressure sensors more particularly to a kind of Fluid pressure detection sensor, the sensor are special
Suitable in water pump.
Background technology
Pressure sensor is widely applied in multiple industries, fluid as a kind of common detecting instrument
Press detection sensor is one such.
Chinese invention patent CN201210321001.7 discloses a kind of Fluid pressure detection sensor, Fluid pressure inspection
It includes shell, flexible sheet, magnetic core, inductance coil, spring, inductance sleeve and regulating valve to survey sensor；Upper part of the housing is equipped with the
One vessel, and lower part is then equipped with the first through hole being connected with the first vessel；Inductance lower cartridge be equipped with the second vessel, and on
Portion is then equipped with the second internal thread hole being connected with the second vessel；Flexible sheet is located at the first vessel bottom of shell；Inductance set
Cylinder lower part is inserted in the first vessel of shell, and flexible sheet is pushed down in lower face, which may also function as the work of sealing
With, you can so that the good seal performance between the inductance sleeve and the first vessel of shell, water is not leaked out from there；Spring can
Telescopically it is located in the second vessel of inductance sleeve；Inductance coil is fixed on the second vessel lower port inner wall of inductance sleeve,
Its lead-out wire is pierced by out of inductance sleeve the second vessel and is electrically connected with pressure detection circuit；Magnetic core is axially displaceably located at electricity
In the inner cavity for feeling coil, magnetic core lower face is in contact with flexible sheet, which is in contact with lower spring end；Regulating valve
Lower end is equipped with the second external screw thread compatible with the second internal thread hole of inductance sleeve；Regulating valve lower end is screwed into the of inductance sleeve
In two internal thread holes, which is in contact with spring upper end.
When work, water enters from the first through hole of shell lower end, and the pressure of water forces flexible sheet to generate toward magnetic core side
To raised deformation, the deformation of the flexible sheet pushes magnetic core up to move and compressed spring, because magnetic core deviates inductance coil
Displacement, magnetic linkage are reduced, and the inductance value of inductance coil is caused also to reduce；The actual pressure that pressure detection circuit calculates water outlet accordingly is big
It is small, export feed pump to provide corresponding control signal.That is, disclosed in patent of invention CN201210321001.7
Scheme is to deviate the displacement of inductance coil under flow action using magnetic core to obtain the inductance value of inductance coil in the second vessel
Situation of change, and then the actual pressure size of water is calculated according to this inductance value situation of change by pressure detection circuit again.
However, the Fluid pressure detection sensor scheme disclosed in foregoing invention patent CN201210321001.7 is still deposited
In shortcoming：Due to needing inductance coil to be arranged in the second vessel of Fluid pressure detection sensor and by inductance coil
Lead-out wire be pierced by out of inductance sleeve the second vessel and be electrically connected with pressure detection circuit, this will so that Fluid pressure inspection
The difficulty of processing for surveying sensor increases, and reduces the processing and manufacturing efficiency of sensor；In addition, due to need by inductance coil with
Displacement between magnetic core obtains the inductance value situation of change in the second vessel, and after inductance value is tested out, then goes to sentence
Disconnected pressure, inductance is more sensitive, and the coherence request of magnetic is problematic, and technique is bad does.
Invention content
The technical problem to be solved by the present invention is to provide a kind of Fluid pressure detection sensor for the above-mentioned prior art.
The Fluid pressure detection sensor is not only simple in structure, is easy to process, and structure accomplishes to be electrically isolated, and ensure that safety and inspection
It is accurate to survey.
Technical solution is used by the present invention solves above-mentioned technical problem：A kind of Fluid pressure detection sensor, including
The top of shell, capping, flexible sheet, post rod parts and spring, the shell is provided with vessel, and the lower end of shell is provided with company
The through hole of logical vessel；The capping is mutually fastened with shell and the open top of the capping covering vessel；The elastic membrane
Piece is fixed on the bottom of vessel and blocks being connected to for through hole and vessel；The post rod parts are axially displaceably located at capping
It is interior；The spring acts on post rod parts and the lower part of post rod parts is made to remain the trend of contact resilient diaphragm；Its feature
It is, the Fluid pressure detection sensor further includes magnetic part and examined to the magnetic field intensity for connecting external processor
Device is surveyed, the magnetic part is fixed on the upper end of post rod parts；The magnetic field intensity detection device is set to the external simultaneously position of capping
In the top of magnetic part, magnetic field intensity detection device can induce magnetic part and detect dress closer or far from the magnetic field intensity
The changes of magnetic field set and generated.
With improvement, in the Fluid pressure detection sensor, the shell is fastened with the capping by helicitic texture.
Specifically, in the Fluid pressure detection sensor, fluid is calculated by following formula in the processor
Pressure：V_OUT=KX；Wherein, V_OUT indicates that the fluid pressure value in cavity, K indicate the coefficient of elasticity of cavity inner spring, X tables
Show the displacement of cavity inner spring.
It improves again, in the Fluid pressure detection sensor, the magnetic field intensity detection device is located at the top of capping.
Further, in the Fluid pressure detection sensor, the lower end of the shell has and pump housing pressure detecting
Mouth is adapted and one end is fastened on extension in shell, and extending part is in having outer spiral shell on the periphery of through hole and extension
Line.
It improves again, the Fluid pressure detection sensor further includes fastening cap, and the fastening cap is detachably fastened envelope
The top of lid, the magnetic field intensity detection device are formed by after being located at fastening cap and capping fastening in space.
Again with improvement, the Fluid pressure detection sensor further includes the briquetting for having inner cavity, and the capping has adaptation
Post rod parts axial movement cavity, the briquetting be located at capping lower end and push down flexible sheet, with by the cavity covered with
The mobile space being axially moveable for post rod parts is collectively formed in the inner cavity of briquetting.
Further, there is the guiding playing the guiding role to the axial movement direction of post rod parts in the mobile space
Chamber.
Still further, in the Fluid pressure detection sensor, the flexible sheet is in the cup-shaped knot of middle part indent
Structure, the female parts of the flexible sheet are located at the lower section of the bottom of the post rod parts.
It improves again, in the Fluid pressure detection sensor, the flexible sheet is fixed on vessel by position limiting structure
Bottom.
Specifically, in the Fluid pressure detection sensor, the magnetic field intensity detection device senses for linear Hall
Device.
Compared with the prior art, the advantages of the present invention are as follows：
First, in the Fluid pressure detection sensor of the present invention, by the vessel bottom that flexible sheet is fixed on to shell
Portion and post rod parts are axially displaceably arranged in capping, and in the upper end fixed magnetic component of post rod parts,
Magnetic field intensity detection device is arranged in the top of magnetic part, and flexible sheet is heaved with the fluid entered in through hole, heaved
Flexible sheet push post rod parts to move up in an axial direction and compressed spring so that magnetic part in capping caused by magnetic
Field intensity changes, and the change of magnetic field strength situation is then sent to external processor and done and located by magnetic field intensity detection device
Reason, to be accurately calculated according to the change of magnetic field strength situation in Fluid pressure detection sensor by external processor
Prevailing fluid pressure value in Fluid pressure detection sensor；
Secondly, Fluid pressure detection sensor of the invention is produced using magnetic field intensity detection device come induced magnetism component
Electricity need not be arranged in the inside cavity of its shell in the Fluid pressure detection sensor of raw change of magnetic field strength situation, the invention
Feel coil, more inductance coil need not be drawn to the external of shell, it is possible thereby to be effectively reduced Fluid pressure detection sensor
The processing and manufacturing difficulty of device improves processing and manufacturing efficiency, while structure has accomplished to be electrically isolated the safety that ensure that fluid detection
Property；
Again, the present invention is mainly the pressure generated to the bottom surface of flexible sheet using fluid pressure, which is transmitting
In the process, some fixed position can be reached under the balance of spring force；Due to the upper end of post rod parts be equipped with it is stable and can
Mobile magnetic part, magnetic part can generate magnetic field in the cavity；Come to cavity by using magnetic field intensity detection device
Interior magnetic field intensity measures, and relevant displacement is calculated by processor, which is worked as by processor assessment
Preceding state simultaneously calculates current fluid pressure value, to reach the accurate detection for being directed to Fluid pressure；
In a practical situation, since the magnetic field intensity in cavity can change because of the movement of magnetic part, magnetic part
Amount of movement can also be influenced by the spring force in cavity, and the change in displacement of spring can also be influenced by Fluid pressure, this just makes
It obtains and generates relationship between fluid pressure value meeting and spring force, then, the fluid pressure value in cavity passes through formula " V_OUT=KX "
It is calculated, wherein V_OUT indicates that the fluid pressure value in cavity, K indicate that the coefficient of elasticity of cavity inner spring, X indicate cavity
The displacement of inner spring；
Finally, the Fluid pressure detection sensor in the present invention parts are few, simple in structure, at low cost and reliability
It is high；Certainly, because magnetic field intensity detection device is set to capping outside and positioned at the top of magnetic part, but also the fluid pressure
The structure of force detection sensor has accomplished to be electrically isolated, and ensure that the safety of fluid detection.
Description of the drawings
Fig. 1 is the structural schematic diagram of Fluid pressure detection sensor in the embodiment of the present invention；
Fig. 2 is the decomposition diagram of Fluid pressure detection sensor shown in Fig. 1；
Fig. 3 is the sectional view of Fluid pressure detection sensor shown in Fig. 1；
Fig. 4 is the structural schematic diagram of Fluid pressure detection sensor middle casing shown in Fig. 1；
Fig. 5 is the structural schematic diagram of flexible sheet in Fluid pressure detection sensor shown in Fig. 1；
Fig. 6 is the structural schematic diagram of gland in Fluid pressure detection sensor shown in Fig. 1；
Fig. 7 is the structural schematic diagram of briquetting in Fluid pressure detection sensor shown in Fig. 1；
Fig. 8 is the connection status schematic diagram of Fluid pressure detection sensor and processor shown in Fig. 1.
Specific implementation mode
Below in conjunction with attached drawing embodiment, present invention is further described in detail.
As shown in FIG. 1 to 3, the Fluid pressure detection sensor in the present embodiment, including shell 101, capping 102, bullet
Property diaphragm 103, post rod parts 104 and spring 105, the fluid in the embodiment is water；The top of shell 101 is provided with vessel
106, the lower end of shell 101 is provided with the through hole 107 of connection vessel 106, and external water flows through the through hole 107 and enters stream
In body press detection sensor；Capping 102 is fixed on shell 101, and the top that the capping 102 covers in vessel 106 is opened
Mouthful；Flexible sheet 103 is fixed on the bottom of vessel 106 and blocks being connected to for through hole 107 and vessel 106, is flowed into avoid water
Enter into the vessel 106；Post rod parts 104 herein are axially displaceably located in capping 102, for example, can be in capping 102
Inside it is formed with the mobile space moved axially for post rod parts 104；Spring 105 acts on post rod parts 104 and makes mandril portion
The lower part of part 104 can remain the trend of contact resilient diaphragm 103；As improvements, the fluid pressure in the present embodiment
Force detection sensor 1 further includes magnetic part 109 and to connect the magnetic field intensity detection device 110 of external processor,
Magnetic part 109 is fixed on the upper end of post rod parts 104；Magnetic field intensity detection device 110 is set to capping outside and positioned at magnetism
The top of component 109, the magnetic field intensity detection device 110 can induce magnetic part 109 and be detected closer or far from magnetic field intensity
Device 110 and generate changes of magnetic field.Wherein, the magnetic field intensity detection device 110 in the present embodiment is sensed using linear Hall
Device.Of course, it is possible to enable magnetic field intensity detection device 110 positioned at the top of capping 102, alternatively, the magnetic field intensity detection device 110
It is arranged positioned at the surface of magnetic part 109, and magnetic field intensity detection device 110 is made to be located at the outside of vessel 106.
In order to enable post rod parts 104 can more steadily axially move in capping, in the present embodiment, may be used also
To have the guiding 1080 playing the guiding role to the axial movement direction of post rod parts in above-mentioned mobile space.Specifically, should
Fluid pressure detection sensor further includes the briquetting 117 for having inner cavity, and there are adaptation post rod parts 104 to move axially for capping 102
Cavity, briquetting 117 is located at the lower end of capping 102 and pushes down flexible sheet 103, with by cavity and the briquetting 117 of capping 102
The mobile space being axially moveable for post rod parts 104 is collectively formed in inner cavity.
In the present embodiment, the top of post rod parts 104 is located in the directed cavity 1080, and the lower part of post rod parts 104 is then
Positioned at being formed by mobile space, it is possible thereby to which so that magnetic part 109 is mobile and close with the top of post rod parts 104
Or far from magnetic field intensity detection device 110.It is, of course, also possible to which the top with season post rod parts 104 is located at the interior of spring 105
In chamber.
Shown in Figure 3, the flexible sheet 103 in the present embodiment may be used position limiting structure and be fixed on the vessel 106
Bottom.For example, groove 114 is arranged in the bottom of vessel 106, accordingly, there is adaptation to limit the groove and enter for flexible sheet 103
Lug boss 115 in groove.Certainly, the groove 114 on vessel bottom preferably uses ring-shaped groove, on flexible sheet 103
Lug boss 115 is also accordingly ring-shaped protrusion, thereby enhances flexible sheet 103 and stablizes effect when vessel bottom is fixed
Fruit.
Specifically, in the Fluid pressure detection sensor of the present embodiment, by the lower face of capping 102 by flexible sheet
103 push down, so that flexible sheet 103 is firmly secured at the bottom of vessel 106；Flexible sheet 103 selects the diaphragm of rubber mass.
Shown in Figure 5, which is in the cup-like structure of middle part indent, the inner fovea part of flexible sheet 103 in the present embodiment
Divide the lower section positioned at the bottom of post rod parts 104.
Using the Fluid pressure detection sensor structure in the present embodiment, flexible sheet 103 can be made by through passing through
When the water impact that through-hole 107 enters, the middle part female parts of the flexible sheet 103 can be towards the bottom side of post rod parts 104
To heaving, the flexible sheet 103 heaved pushes the post rod parts 104 to be examined towards magnetic field intensity in the mobile space of capping 102
110 direction of survey device, which is done, axially moves up movement, further such that produced by magnetic part 109 is in the mobile space of capping 102
Magnetic field intensity generate variation because of the axial movement of magnetic part 109；
Certainly, when the flow entered through through hole 107 reduces, water suffered by the middle part female parts of flexible sheet 103
The impact force of stream can reduce, and axial movement of the magnetic part 109 also in post rod parts 104 towards 103 direction of flexible sheet moves down
It is dynamic, thereby again result in magnetic part 109 in the mobile space of capping 102 generated magnetic field intensity because of magnetic part 109
Axial movement and generate variation；Magnetic part 109 is in the mobile space of capping 102 with magnetic field caused by flow size
Strength Changes situation sends external processor to eventually by magnetic field intensity detection device 110 and processes, with by processor root
The hydraulic pressure value of the mobile space of capping 102, i.e. working as in Fluid pressure detection sensor are calculated according to the variation of magnetic field intensity
Preceding hydraulic pressure value.
Specifically, Fluid pressure is calculated by following formula in the processor in the present embodiment：V_OUT=KX；Wherein,
V_OUT indicates that the fluid pressure value in cavity, K indicate that the coefficient of elasticity of cavity inner spring, X indicate the displacement of cavity inner spring
Amount.
For the Fluid pressure detection sensor in the present embodiment, shell 101 uses split structure with capping 102.Tool
Body, it can be provided with and the first internal thread in capping 102 by the way that the first internal thread is arranged in the vessel 106 of shell 101
Capping 102 is fixed on by screw thread engagement in the vessel 106 of shell 102, thus by compatible first external screw thread to realize
So that shell 101 tightens together with capping 102；It is of course also possible to be provided with the second external screw thread in the outside of shell 101, seal
The second internal thread compatible with the second external screw thread is provided on lid 102, the shell 101 with capping 102 by screw thread engage into
Row is fixed.
Shown in Fig. 2 and Fig. 3, the Fluid pressure detection sensor is installed on water pump for convenience, to measure water
Hydraulic pressure value in pump, the lower end of the present embodiment middle casing 101 has to be adapted and one end is fastened on shell with pump housing pressure detecting mouth
Internal extension 111, extension 111, which is located on the periphery of through hole 107 and extension 111, has external screw thread.The extension
111 are fastened on by its external screw thread at pump housing pressure detecting mouth, are installed to the Fluid pressure detection sensor to realize
Purpose on water pump.There can be external screw thread on the outer wall of extension 111, there is interior spiral shell on the inner wall of pump housing pressure detecting mouth
Line reaches so that the external screw thread of extension 111 can be adapted with the internal thread of pump housing pressure detecting mouth and facilitates Fluid pressure
The effect that detection sensor mounts and dismounts on water pump.
In addition, the Fluid pressure detection sensor in the embodiment can also include fastening cap 112, which can
It is releasably fastened on the top of capping 102, magnetic field intensity detection device 110 is located at fastening cap 112 and institute's shape after 102 fastening of capping
At space in.For example, having the storage tank 116 for placing magnetic field intensity detection device on the top of capping 102, then inciting somebody to action
After magnetic field intensity detection device is put into the storage tank 116, then fastening cap 112 is fastened on to the top of capping 102, so that
Magnetic field intensity detection device is formed by after being located at fastening cap 112 and 102 fastening of capping in space.Fastening cap 112 passes through screw thread
Structure is tightened on the top of capping 102.
According to the use needs for Fluid pressure detection sensor, can enable on fastening cap 112 there are one having for connection
The guiding that the conducting wire of ppu is inserted into is inserted into hole 1120, and a connecting pin of conducting wire passes through wire insertion hole 1120 and enters
In storage tank 116, so that the connecting pin of conducting wire is connected with the magnetic field intensity detection device 110 in storage tank 116.
Shown in Figure 7, this gives detect water in water pump using water-aspirator pressure detection device in the present embodiment
Status diagram when pressure.Specifically, the magnetic field intensity detection device 110 of Fluid pressure detection sensor 1 is passed through into conducting wire
113 are connected to processor 2.It as a result, can be by the magnetic in Fluid pressure detection sensor 1 by magnetic field intensity detection device 110
Field intensity situation of change is sent to external processor 2, with finally by processor 2 according to received streams body press detection sensor
The current hydraulic pressure value in the Fluid pressure detection sensor is calculated in change of magnetic field strength situation in 1.
It should be noted that Fluid pressure detection sensor in the present embodiment using magnetic field intensity detection device 110 come
The generated change of magnetic field strength situation in the mobile space of capping 102 of induced magnetism component 109, Fluid pressure detection pass
Inductance coil need not be arranged in sensor inside it, more need not draw inductance coil to the external of shell 101；Certainly, due to
Inductance coil need not be set in the vessel 106 of Fluid pressure detection sensor, and this reduces Fluid pressure detections to pass
The processing and manufacturing difficulty of sensor, improves processing and manufacturing efficiency.
Certainly, the Fluid pressure detection sensor in the embodiment can be not only used for the detection of water flow pressure, can be with
Pressure detecting for fluid oil and other fluids.
Although the preferred embodiment of the present invention described in detail above, it is to be clearly understood that for this field
Technical staff for, the invention may be variously modified and varied.Appoint made by all within the spirits and principles of the present invention
What modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of Fluid pressure detection sensor, including shell (101), capping (102), flexible sheet (103), post rod parts
(104) and spring (105), the top of the shell (101) are provided with vessel (106), and the lower end of shell (101) is provided with connection
The through hole (107) of vessel (106)；The capping (102) is held with shell (101) mutually fastening and the capping (102) covering
The open top of chamber (106)；The flexible sheet (103) is fixed on the bottom of vessel (106) and blocks through hole (107) and hold
The connection of chamber (106)；The post rod parts (104) are axially displaceably located in capping (102)；Spring (105) effect
In post rod parts (104) and the lower part of post rod parts (104) is made to remain the trend of contact resilient diaphragm (103)；Its feature
It is, the Fluid pressure detection sensor (1) further includes magnetic part (109) and to connect the magnetic of external processor
Field intensity detection device (110), the magnetic part (109) are fixed on the upper end of post rod parts (104)；The magnetic field intensity inspection
It surveys device (110) to be set to capping outside and be located at the top of magnetic part (109), magnetic field intensity detection device (110) can incude
The changes of magnetic field for going out magnetic part (109) closer or far from the magnetic field intensity detection device (110) and generating.
2. Fluid pressure detection sensor device according to claim 1, which is characterized in that the shell (101) with it is described
Capping (102) is fastened by helicitic texture.
3. Fluid pressure detection sensor device according to claim 1, which is characterized in that the processor passes through following public
Fluid pressure is calculated in formula：
V_OUT=KX；Wherein, V_OUT indicates that the fluid pressure value in cavity, K indicate the coefficient of elasticity of cavity inner spring, X tables
Show the displacement of cavity inner spring.
4. Fluid pressure detection sensor according to claim 1, which is characterized in that the lower end of the shell (101) has
Have and be adapted with pump housing pressure detecting mouth and one end is fastened on extension (111) in shell, extension (111) is located at through hole
(107) there is external screw thread on periphery and extension (111).
5. Fluid pressure detection sensor according to claim 1, which is characterized in that further include fastening cap (112), it is described
Fastening cap (112) is detachably fastened the top of capping (102), and the magnetic field intensity detection device (110) is located at fastening cap
(112) it is formed by space with after capping (102) fastening.
6. according to Claims 1 to 5 any one of them Fluid pressure detection sensor, which is characterized in that further include in having
The briquetting (117) of chamber, the capping (102) have the cavity that adaptation post rod parts (104) move axially, the briquetting (117)
Positioned at the lower end of capping (102) and flexible sheet (103) is pushed down, with total by the inner cavity of the cavity of capping (102) and briquetting (117)
The mobile space being axially moveable for post rod parts (104) is formed together.
7. Fluid pressure detection sensor device according to claim 6, which is characterized in that have in the mobile space pair
The directed cavity (1080) that the axial movement direction of post rod parts play the guiding role.
8. according to Claims 1 to 5 any one of them Fluid pressure detection sensor, which is characterized in that the flexible sheet
(103) in the cup-like structure of middle part indent, the female parts of the flexible sheet (103) are located at the post rod parts (104)
The lower section of bottom.
9. according to Claims 1 to 5 any one of them Fluid pressure detection sensor, which is characterized in that the flexible sheet
(103) bottom of vessel (106) is fixed on by position limiting structure.
10. according to Claims 1 to 5 any one of them Fluid pressure detection sensor, which is characterized in that the magnetic field intensity
Detection device (110) is linear hall sensor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562300.7A CN108414132A (en) | 2018-06-04 | 2018-06-04 | A kind of Fluid pressure detection sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562300.7A CN108414132A (en) | 2018-06-04 | 2018-06-04 | A kind of Fluid pressure detection sensor |
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| CN108414132A true CN108414132A (en) | 2018-08-17 |
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| CN201810562300.7A Pending CN108414132A (en) | 2018-06-04 | 2018-06-04 | A kind of Fluid pressure detection sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109387304A (en) * | 2018-10-21 | 2019-02-26 | 许建平 | A kind of sensor device |
| CN110054141A (en) * | 2019-03-27 | 2019-07-26 | 西人马联合测控（泉州）科技有限公司 | Pressure sensor and its packaging method |
| CN110243530A (en) * | 2019-07-23 | 2019-09-17 | 浙江耀达智能科技股份有限公司 | A kind of novel pressure sensor |
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| CN110243530A (en) * | 2019-07-23 | 2019-09-17 | 浙江耀达智能科技股份有限公司 | A kind of novel pressure sensor |
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