CN113358270A - High-sensitivity pressure sensor - Google Patents
High-sensitivity pressure sensor Download PDFInfo
- Publication number
- CN113358270A CN113358270A CN202110434162.6A CN202110434162A CN113358270A CN 113358270 A CN113358270 A CN 113358270A CN 202110434162 A CN202110434162 A CN 202110434162A CN 113358270 A CN113358270 A CN 113358270A
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- China
- Prior art keywords
- pressure sensor
- push rod
- seat
- wire
- high sensitivity
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- 238000001816 cooling Methods 0.000 claims abstract description 28
- 230000017525 heat dissipation Effects 0.000 claims abstract description 19
- 230000035945 sensitivity Effects 0.000 claims description 12
- 230000001419 dependent effect Effects 0.000 claims description 5
- 230000008901 benefit Effects 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 239000002274 desiccant Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000036632 reaction speed Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/08—Means for indicating or recording, e.g. for remote indication
- G01L19/12—Alarms or signals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0627—Protection against aggressive medium in general
- G01L19/0654—Protection against aggressive medium in general against moisture or humidity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0681—Protection against excessive heat
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to the technical field of pressure sensors and discloses a high-sensitivity pressure sensor which comprises an air inlet hole, a convex seat, a pressure lever, a push rod, a wedge block, a cooling seat, a heat dissipation layer, a base, an output end and a shell, wherein a spring is sleeved on the lower side of the pressure lever, and the top of the spring is fixedly connected with a concave part of the push rod. According to the invention, the spring is arranged on the outer side of the pressure rod, the magnetic block is arranged on the push rod, the magneto-resistor and the fixed rod are arranged on the wedge block, the coil is arranged on the fixed rod, the flashlight is arranged at the top end of the base, the wire groove is arranged on the shell, the coil is connected with the wire in the wire groove through the wire, the wire is connected with the flashlight and the output end, the magnetic block is driven to move by the up-and-down movement of the push rod, the coil generates a Faraday effect to generate electromotive force, the electromotive force is transmitted to the output end and the flashlight through the wire, the instrument connected with the output end reacts, and the flickering frequency of the flashlight is different through the distance between the magneto-resistor and the magnetic block, so that an operator is prompted.
Description
Technical Field
The invention relates to the technical field of pressure sensors, in particular to a high-sensitivity pressure sensor.
Background
The pressure sensor is a device or a device which can sense pressure signals and can convert the pressure signals into usable output electric signals according to a certain rule, and is widely applied to various industrial self-control environments.
Chinese patent CN110243534B discloses a pressure sensor, which comprises a base, the cooling seat of connection below the base, connect at the dry seat of cooling seat below and connect the base at dry seat, cooling seat and the dry seat that this pressure sensor was equipped with are at first to carrying out drying process to the high temperature high humidity gas that enters into this pressure sensor, then the gas after drying process is cooled down and is handled, reduce the gas of high temperature to ambient temperature, then detect with pressure sensor in entering into the base, effectual gaseous direct and pressure sensor's the sensitive element and the circuit chip of having avoided high temperature high humidity, the value error that leads to pressure sensor's detection is great, pressure sensor's life has been increased.
Although effectual gas of having avoided the high temperature and high humidity environment influences pressure sensor in the above-mentioned patent, the dry subassembly of establishing in its boss has influenced gaseous transmission speed, greatly reduced pressure sensor's sensitivity, and its depression bar and pushing ram only are used for the extrusion voussoir to make boss and cooling seat fixed, and too complicated and the restoration of depression bar and pushing ram is difficult to realize, influences pressure sensor's reaction rate.
Disclosure of Invention
Aiming at the defects of the existing pressure sensor in the use process in the background technology, the invention provides the high-sensitivity pressure sensor which has the advantage of avoiding the reduction of the sensitivity of a drying agent shadow to the gas transmission speed and solves the technical problems in the background technology.
The invention provides the following technical scheme: the utility model provides a high sensitivity's pressure sensors, includes inlet port, convex seat, depression bar, push rod, voussoir, cooling seat, heat dissipation layer, base, output and shell, the spring has been cup jointed to the downside that the depression bar is located the push rod, the top and the push rod concave part fixed connection of spring, the bottom of spring and the bottom fixed connection of convex seat, the top of voussoir is inlayed and is had magneto resistor, the bottom side middle part fixedly connected with dead lever of voussoir, the outside winding of dead lever has the coil, the top fixedly connected with flashing light of base, the inside of shell is equipped with the wire casing.
Preferably, the middle part of the convex seat is provided with a through hole to communicate the cooling seat with the air inlet hole, and the through hole in the middle part of the convex seat is recessed towards two sides.
Preferably, the bottom end of the fixing rod is flush with the lowest position where the magnetic block moves downwards.
Preferably, a wire is arranged in the wire slot, and the coil is connected with the flashing light and the output end through the wire.
Preferably, the magnetic resistance is larger as the magnetic block is farther away, and smaller as the magnetic block is closer.
Preferably, the cooling cavity is a closed cavity surrounded by the cooling seat and the heat dissipation layer.
Preferably, the inner side of one end of the shell, which is positioned on the upper side of the convex seat, is fixedly connected with the outer side of the cooling seat and the outer side of the heat dissipation layer.
The invention has the following beneficial effects:
1. according to the invention, the spring is arranged on the outer side of the pressure rod, the magnetic block is arranged on the push rod, the magneto-resistor and the fixed rod are arranged on the wedge block, the coil is arranged on the fixed rod, the flashlight is arranged at the top end of the base, the wire groove is arranged on the shell, the coil is connected with the wire in the wire groove through the wire, the wire is connected with the flashlight and the output end, the magnetic block is driven to move by the up-and-down movement of the push rod, the coil generates a Faraday effect to generate electromotive force, the electromotive force is transmitted to the output end and the flashlight through the wire, the instrument connected with the output end reacts, and the flickering frequency of the flashlight is different through the distance between the magneto-resistor and the magnetic block, so that an operator is prompted.
2. According to the invention, the concave hole is formed in the bottom of the push rod, the spring is arranged on the outer side of the push rod and fixed with the convex seat, the push rod moves upwards along the pressure rod through entering the concave hole through air pressure, and the push rod is pulled back to reset through the spring when the device does not work, so that the influence of the unsetting of the push rod on the sensitivity and the reaction speed of the pressure sensor is avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the inner structure of the push rod of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
fig. 4 is a schematic perspective view of the cooling seat of the present invention.
In the figure: 1. a base; 2. an air inlet; 3. a convex seat; 4. a desiccant; 5. a pressure lever; 51. a spring; 6. a push rod; 61. a magnetic block; 7. a trapezoidal wedge block; 8. a wedge block; 81. a magneto-resistor; 82. fixing the rod; 83. a coil; 9. a cooling seat; 10. a cooling cavity; 11. an air tube; 12. a heat dissipation layer; 13. a heat dissipating tooth; 14. a base; 141. flashing a light; 15. a pressure sensor; 16. an output end; 17. a housing; 171. a wire slot.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a high-sensitivity pressure sensor includes a base 1, an air inlet 2 is disposed in the middle of the base 1, a convex base 3 is fixedly connected to the upper portion of the base 1, a drying agent 4 is disposed in the middle of the convex base 3, pressure rods 5 are fixedly connected to both sides of the bottom of the convex base 3, a push rod 6 is movably sleeved on the outer sides of the pressure rods, a spring 51 is sleeved on the lower side of the pressure rod 5 located on the push rod 6, the top of the spring 51 is fixedly connected with the concave portion of the push rod 6, the bottom of the spring 51 is fixedly connected with the bottom of the convex base 3, a magnetic block 61 is fixedly connected to the upper portion of the push rod 6, a trapezoidal wedge 7 is fixedly connected to the top of the push rod 6, a wedge 8 is fixedly connected to both sides of the inner portion of the convex base 3, the inclined plane of the wedge 8 contacts with the inclined plane of the trapezoidal wedge 7, a magnetic resistor 81 is embedded in the top of the wedge 8, the magnetic resistor 81 is larger the farther from the magnetic block 61, the resistance is smaller when the distance between the magnetic block 61 is closer, the fixing rod 82 is fixedly connected to the middle of the bottom side of the wedge block 8, the bottom end of the fixing rod 82 is flush with the lowest position where the magnetic block 61 moves downwards, the moving range of the magnetic block 61 is ensured to be within the range of the coil 83, the coil 83 is wound on the outer side of the fixing rod 82, the top end of the convex base 3 is fixedly connected with the cooling base 9, the middle of the convex base 3 is provided with a through hole to enable the cooling base 9 to be communicated with the air inlet 2, the through hole in the middle of the convex base 3 is concave towards two sides, the pressure is ensured to smoothly enter the cooling base 9 through the drying agent 4, the side surface of the cooling base 9 is provided with a cooling cavity 10, the air pipe 11 is arranged inside the cooling base 9, the heat dissipation layer 12 is fixedly connected to the outer side of the cooling base 9, the cooling cavity 10 is a closed cavity formed by the cooling base 9 and the heat dissipation layer 12, and the pressure is ensured to be cooled through the cooling cavity 10, the heat dissipation layer 12 and the heat dissipation teeth 13, the heat dissipation layer 12 is provided with heat dissipation teeth 13 at the position of the heat dissipation cavity 10, the upper side of the heat dissipation seat 9 is fixedly connected with a base 14, the top of the base 14 is fixedly connected with a flashing lamp 141, the middle part of the upper side of the heat dissipation seat 9 is positioned at the lower side of the concave part of the base 14 and is fixedly connected with a pressure sensor 15, the middle part of the top end of the base 14 is fixedly connected with an output end 16, the bottom of the output end 16 is connected with the pressure sensor 15, the outer side of the convex seat 3 is fixedly connected with a shell 17, the inner side of one end of the shell 17 positioned at the upper side of the convex seat 3 is fixedly connected with the outer side of the heat dissipation seat 9 and the outer side of the heat dissipation layer 12, a wire casing 171 is arranged inside the shell 17, wires are arranged inside the wire casing 171, a coil 83 is connected with the flashing lamp 141 and the output end 16 through wires, it is ensured that the magnitude of unnecessary pressure can be judged by the flashing frequency of the flashing lamp 141 just when the pressure enters the convex seat 3, and meanwhile, the magnitude of the pressure can be further determined by an instrument connected at the output end 16, the reaction speed of the equipment is improved.
When the device works, the device enters the concave part at the lower side of the push rod 6 through pressure to jack the push rod 6, meanwhile, the push rod 6 moves upwards to drive the magnetic block 61 and the trapezoidal wedge 7 to move upwards, the coil 83 generates a Faraday effect to generate electromotive force through upward movement of the magnetic block 61, the coil is connected with the flashing lamp 141 and the output end 16 through a conducting wire, meanwhile, the flashing frequency of the flashing lamp 141 is controlled through connection of the coil 83 and the magneto-dependent resistor 81, the closer the distance between the magnetic block 61 and the magneto-dependent resistor 81 is, the faster the flashing frequency of the flashing lamp 141 is, and otherwise, the slower the flashing frequency of the flashing lamp 141 is, so that the pressure change of a person is reminded.
The use method (working principle) of the invention is as follows:
the device is firstly installed, pressure enters the interior of the convex seat 3 through the drying agent 4 through the air inlet holes 2, air pressure enters the concave part at the bottom of the push rod 6 to jack up the push rod 6, the push rod 6 moves upwards to drive the magnetic block 61 and the trapezoidal wedge block 7 to move upwards, the magnetic block 61 and the coil 83 are acted to generate a Faraday effect to generate electromotive force and transmit the electromotive force to the flash lamp 141 and the output end 16 through a lead, so that the flash lamp 141 flashes and the instrument connected with the output end 16 are reacted, meanwhile, the flash frequency of the flash lamp 141 is controlled through the action of the magnetic resistor 81, a person is reminded to pay attention to watching the change of the pressure, when the pressure is normal or the device does not work, the push rod 6 is pulled back to reset through the spring 51, and the sensitivity and the reaction speed of the device are prevented from being influenced by the fact that the push rod 6 is not reset.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a high sensitivity's pressure sensor, includes inlet port (2), convex seat (3), depression bar (5), push rod (6), voussoir (8), cooling seat (9), heat dissipation layer (12), base (14), output (16) and shell (17), its characterized in that: the utility model discloses a novel pressure bar, including depression bar (5), push rod (6), bottom and convex seat (3), the top of spring (51) and push rod (6) recess fixed connection, the bottom of spring (51) and the bottom fixed connection of convex seat (3), the top of voussoir (8) is inlayed and is had magnetic resistance (81), bottom side middle part fixedly connected with dead lever (82) of voussoir (8), the outside winding of dead lever (82) has coil (83), the top fixedly connected with flashing lamp (141) of base (14), the inside of shell (17) is equipped with wire casing (171).
2. A high sensitivity pressure sensor as defined in claim 1, wherein: the middle part of the convex seat (3) is provided with a through hole to communicate the cooling seat (9) with the air inlet hole (2), and the through hole in the middle part of the convex seat (3) is arranged to be concave towards two sides.
3. A high sensitivity pressure sensor as defined in claim 1, wherein: the bottom end of the fixing rod (82) is flush with the lowest position where the magnetic block (61) moves downwards.
4. A high sensitivity pressure sensor as defined in claim 1, wherein: the wire casing (171) is internally provided with a wire, and the coil (83) is connected with the flashing light (141) and the output end (16) through the wire.
5. A high sensitivity pressure sensor as defined in claim 1, wherein: the magneto-dependent resistor (81) has the advantages that the farther the magneto-dependent resistor is from the magnetic block (61), the larger the resistor is, and the closer the magneto-dependent resistor is from the magnetic block (61), the smaller the resistor is.
6. A high sensitivity pressure sensor as defined in claim 1, wherein: the cooling cavity (10) is a closed cavity surrounded by a cooling seat (9) and a heat dissipation layer (12).
7. A high sensitivity pressure sensor as defined in claim 1, wherein: the inner side of one end of the shell (17) positioned at the upper side of the convex seat (3) is fixedly connected with the outer side of the cooling seat (9) and the outer side of the heat dissipation layer (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110434162.6A CN113358270B (en) | 2021-04-22 | 2021-04-22 | High-sensitivity pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110434162.6A CN113358270B (en) | 2021-04-22 | 2021-04-22 | High-sensitivity pressure sensor |
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| Publication Number | Publication Date |
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| CN113358270A true CN113358270A (en) | 2021-09-07 |
| CN113358270B CN113358270B (en) | 2024-01-12 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5320123A (en) * | 1993-05-24 | 1994-06-14 | Honeywell Inc. | Valve with dynamic function checking capability |
| US20130061690A1 (en) * | 2011-09-13 | 2013-03-14 | Grand Mate Co., Ltd. | Pressure gauge and pressure detecting circuit thereof |
| CN103852627A (en) * | 2012-11-30 | 2014-06-11 | 海洋王（东莞）照明科技有限公司 | Alternating-current circuit current probing device |
| CN206682665U (en) * | 2017-04-19 | 2017-11-28 | 深圳市利浦科技开发有限公司 | Luminescent ball |
| CN110243534A (en) * | 2019-07-22 | 2019-09-17 | 平顶山学院 | A kind of pressure sensor and assembly method |
| CN210003905U (en) * | 2019-05-05 | 2020-01-31 | 浙江万盾制冷股份有限公司 | high-temperature and high-pressure resistant electromagnetic valve |
-
2021
- 2021-04-22 CN CN202110434162.6A patent/CN113358270B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5320123A (en) * | 1993-05-24 | 1994-06-14 | Honeywell Inc. | Valve with dynamic function checking capability |
| US20130061690A1 (en) * | 2011-09-13 | 2013-03-14 | Grand Mate Co., Ltd. | Pressure gauge and pressure detecting circuit thereof |
| CN103852627A (en) * | 2012-11-30 | 2014-06-11 | 海洋王（东莞）照明科技有限公司 | Alternating-current circuit current probing device |
| CN206682665U (en) * | 2017-04-19 | 2017-11-28 | 深圳市利浦科技开发有限公司 | Luminescent ball |
| CN210003905U (en) * | 2019-05-05 | 2020-01-31 | 浙江万盾制冷股份有限公司 | high-temperature and high-pressure resistant electromagnetic valve |
| CN110243534A (en) * | 2019-07-22 | 2019-09-17 | 平顶山学院 | A kind of pressure sensor and assembly method |
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| Publication number | Publication date |
|---|---|
| CN113358270B (en) | 2024-01-12 |
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Effective date of registration: 20231213 Address after: 310000 room 526, building 4, No. 2, kekeyuan Road, Baiyang street, Qiantang New District, Hangzhou, Zhejiang Applicant after: HANGZHOU SUPMEA AUTOMATION CO.,LTD. Address before: No. 45, Huangni Kuang Xiazhuang, yang'er village, Huadong Town, Huadu District, Guangzhou, Guangdong 510000 Applicant before: Gao Nanshan |
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