CN113358270B - High-sensitivity pressure sensor - Google Patents
High-sensitivity pressure sensor Download PDFInfo
- Publication number
- CN113358270B CN113358270B CN202110434162.6A CN202110434162A CN113358270B CN 113358270 B CN113358270 B CN 113358270B CN 202110434162 A CN202110434162 A CN 202110434162A CN 113358270 B CN113358270 B CN 113358270B
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- China
- Prior art keywords
- seat
- fixedly connected
- flash lamp
- push rod
- base
- Prior art date
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- 238000001816 cooling Methods 0.000 claims abstract description 39
- 230000017525 heat dissipation Effects 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 claims abstract description 6
- 230000035945 sensitivity Effects 0.000 claims description 7
- 230000036632 reaction speed Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000002274 desiccant Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit 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
- 238000010586 diagram 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
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
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 the pressure lever is positioned at the lower side of the push rod and is sleeved with a spring, and the top of the spring is fixedly connected with a concave part of the push rod. The invention is characterized in that a spring is arranged on the outer side of a compression bar, a magnetic block is arranged on the push bar, a magneto resistor and a fixed rod are arranged on a wedge block, a coil is arranged on the fixed rod, a flash lamp is arranged at the top end of a base, a wire slot is arranged on a shell, the coil is connected with the wire in the wire slot through a wire, the wire is connected with the flash lamp and an output end, the magnetic block is driven to move through the up-down movement of the push bar, so that the coil generates Faraday effect to generate electromotive force, the electromotive force is transmitted to the output end and the flash lamp through the wire, the instrument connected with the output end reacts, and the flash frequency of the flash lamp is different through the distance between the magneto resistor and the magnetic block, so that the flash lamp is used for prompting an operator.
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 apparatus capable of sensing pressure signals and converting 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, connect the cooling seat in the base below, connect the dry seat in the cooling seat below and connect the base at the dry seat, the cooling seat and the dry seat that this pressure sensor was equipped with carry out drying treatment to the high temperature high humidity gas that enters into in this pressure sensor at first, then the gas after the drying treatment carries out cooling treatment, reduce the gas of high temperature to ambient temperature, then enter into in the base and detect with pressure sensor, the effectual gas of having avoided high temperature high humidity is direct with pressure sensor's sensing element and circuit chip, the value error that leads to pressure sensor's detection is great, pressure sensor's life has been increased.
In the above patent, although the influence of the gas in the high-temperature and high-humidity environment on the pressure sensor is effectively avoided, the drying component arranged in the convex seat influences the transmission speed of the gas, the sensitivity of the pressure sensor is greatly reduced, and the compression bar and the pushing bar are only used for extruding the wedge block to fix the convex seat and the cooling seat, so that the complex operation is realized, the resetting of the compression bar and the pushing bar is difficult to realize, and the reaction speed of the pressure sensor is influenced.
Disclosure of Invention
Aiming at the defects of the prior pressure sensor in the use process, the invention provides a high-sensitivity pressure sensor, which has the advantage of avoiding the sensitivity reduction of a drying agent effect on the gas transmission speed and solves the technical problems in the prior art.
The invention provides the following technical scheme: the utility model provides a high sensitivity's pressure sensor, includes inlet port, convex seat, depression bar, push rod, voussoir, cooling seat, heat dissipation layer, base, output and shell, the depression bar is located the downside of push rod and has cup jointed the spring, the top and the push rod concave part fixed connection of spring, the bottom and the bottom fixed connection of convex seat of spring, the top of voussoir is inlayed and is had the magneto resistance, the bottom middle part fixedly connected with dead lever of voussoir, the outside winding of dead lever has the coil, the top fixedly connected with flash lamp 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 so that the cooling seat is communicated with the air inlet, and the through hole in the middle part of the convex seat is arranged to be concave towards two sides.
Preferably, the bottom end of the fixing rod is flush with the lowest position of the magnetic block moving downwards.
Preferably, wires are arranged in the wire slots, and the coils are connected with the flash lamp and the output end through the wires.
Preferably, the resistance of the magnetic resistor is larger as the distance from the magnetic block is larger, and the resistance of the magnetic resistor is smaller as the distance from the magnetic block is smaller.
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. the invention is characterized in that a spring is arranged on the outer side of a compression bar, a magnetic block is arranged on the push bar, a magneto resistor and a fixed rod are arranged on a wedge block, a coil is arranged on the fixed rod, a flash lamp is arranged at the top end of a base, a wire slot is arranged on a shell, the coil is connected with the wire in the wire slot through a wire, the wire is connected with the flash lamp and an output end, the magnetic block is driven to move through the up-down movement of the push bar, so that the coil generates Faraday effect to generate electromotive force, the electromotive force is transmitted to the output end and the flash lamp through the wire, the instrument connected with the output end reacts, and the flash frequency of the flash lamp is different through the distance between the magneto resistor and the magnetic block, so that the flash lamp is used for prompting an operator.
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 push rod through the air pressure entering the concave hole, and the push rod is pulled back to reset through the spring when the device does not work, so that the influence on the sensitivity and the response speed of the pressure sensor caused by the fact that the push rod is not reset is avoided.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the push rod according to the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 1A according to the present invention;
fig. 4 is a schematic perspective view of a cooling seat according to the present invention.
In the figure: 1. a base; 2. an air inlet hole; 3. a male seat; 4. a drying agent; 5. a compression bar; 51. a spring; 6. a push rod; 61. a magnetic block; 7. a trapezoidal wedge; 8. wedge blocks; 81. a magneto resistor; 82. a fixed rod; 83. a coil; 9. a cooling seat; 10. a cooling cavity; 11. an air pipe; 12. a heat dissipation layer; 13. radiating teeth; 14. a base; 141. a flashing light; 15. a pressure sensor; 16. an output end; 17. a housing; 171. wire slot.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, a high-sensitivity pressure sensor comprises a base 1, an air inlet hole 2 is arranged in the middle of the base 1, a convex seat 3 is fixedly connected to the upper part of the base 1, a drying agent 4 is arranged in the middle of the convex seat 3, pressure rods 5 are fixedly connected to the two sides of the bottom of the convex seat 3, a push rod 6 is movably sleeved on the outer side of the pressure rods, springs 51 are sleeved on the lower sides of the pressure rods 5, the tops of the springs 51 are fixedly connected with concave parts of the push rods 6, the bottoms of the springs 51 are fixedly connected with the bottoms of the convex seat 3, magnetic blocks 61 are fixedly connected to the upper parts of the push rods 6, trapezoidal wedge blocks 7 are fixedly connected to the tops of the push rods 6, wedge blocks 8 are fixedly connected to the two sides of the inner part of the convex seat 3, inclined surfaces of the wedge blocks 8 are contacted with the inclined surfaces of the trapezoidal wedge blocks 7, a magnetic resistor 81 is inlaid on the tops of the wedge blocks 8, the magnetic resistor 81 is larger the farther from the magnetic block 61 is, the smaller the magnetic resistor is the closer to the magnetic block 61 is, the middle part of the bottom side of the wedge block 8 is fixedly connected with a fixing rod 82, the bottom end of the fixing rod 82 is flush with the lowest part of the downward movement of the magnetic block 61, the moving range of the magnetic block 61 is ensured to be in the range of a coil 83, the coil 83 is wound on the outer side of the fixing rod 82, the top end of the convex seat 3 is fixedly connected with a cooling seat 9, the middle part of the convex seat 3 is provided with a through hole to enable the cooling seat 9 to be communicated with an air inlet hole 2, the through hole in the middle part of the convex seat 3 is arranged to be concave towards two sides, the pressure is ensured to smoothly enter the cooling seat 9 through the drying agent 4, the side surface of the cooling seat 9 is provided with a cooling cavity 10, an air pipe 11 is arranged in the cooling seat 9, a heat dissipation layer 12 is fixedly connected to the outer side of the cooling seat 9, the cooling cavity 10 is a closed cavity surrounded by the cooling seat 9 and the heat dissipation layer 12, the pressure is ensured to be subjected to cooling treatment through the cooling cavity 10, the heat dissipation layer 12 and the heat dissipation teeth 13, the heat dissipation layer 12 is located cooling chamber 10 department and is equipped with heat dissipation tooth 13, the upside fixedly connected with base 14 of cooling seat 9, the top fixedly connected with flash lamp 141 of base 14, the middle part of cooling seat 9 upside is located the downside fixedly connected with pressure sensor 15 of base 14 concave part, the top middle part fixedly connected with output 16 of base 14, the bottom and the pressure sensor 15 of output 16 are connected, the outside fixedly connected with shell 17 of convex seat 3, the inboard of the one end that shell 17 is located the convex seat 3 upside and the outside of cooling seat 9 and the outside fixed connection of heat dissipation layer 12, the inside of shell 17 is equipped with wire casing 171, wire casing 171 inside has laid the wire, coil 83 links to each other with flash lamp 141 and output 16 through the wire, guarantee the pressure just to get into in the convex seat 3 just the flicker frequency department of accessible flash lamp 141 and need not judge the size of pressure, the instrument that accessible output 16 department is connected further confirms the size of pressure simultaneously, the reaction rate of equipment has been improved.
The device is characterized in that when in operation, the push rod 6 is jacked up through a concave part at the lower side of the push rod 6 by pressure, meanwhile, the push rod 6 moves upwards to drive the magnetic block 61 and the trapezoidal wedge block 7 to move upwards, the coil 83 generates Faraday effect to generate electromotive force by the upward movement of the magnetic block 61 and is connected with the flash lamp 141 and the output end 16 by a lead, meanwhile, the flash frequency of the flash lamp 141 is controlled by the connection of the coil 83 and the magneto resistor 81, when the pressure is higher, the distance between the magnetic block 61 and the magneto resistor 81 is closer, the resistance is smaller, the flash frequency of the flash lamp 141 is faster, otherwise, the flash frequency of the flash lamp 141 is slower, and the change of the pressure of personnel is reminded.
The application method (working principle) of the invention is as follows:
firstly, after the device is installed, pressure enters the convex seat 3 through the air inlet hole 2 and enters the drying agent 4, the 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, faraday effect is generated through the action of the magnetic block 61 and the coil 83 to generate electromotive force and the electromotive force is transmitted to the flash lamp 141 and the output end 16 through a lead, so that the flash lamp 141 flashes and reacts with an instrument connected with the output end 16, and meanwhile, the flashing frequency of the flash lamp 141 is controlled through the action of the magneto resistor 81, so that a person is reminded of watching the change of the pressure, and 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 influence of the sensitivity and the reaction speed of the device caused by the fact that the push rod 6 is not reset is avoided.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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 understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The utility model provides a high sensitivity's pressure sensor, includes base (1), 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 middle part of base (1) is equipped with inlet port (2), the upper portion fixedly connected with convex seat (3) of base (1), the both sides fixedly connected with depression bar (5) of convex seat (3) bottom, the outside activity of depression bar has cup jointed push rod (6), spring (51) have been cup jointed to the downside that depression bar (5) are located push rod (6), the top and the concave part fixed connection of push rod (6) of spring (51), the bottom and the bottom fixed connection of convex seat (3) of spring (51), the upper portion fixedly connected with magnet (61) of push rod (6), the top fixedly connected with trapezoidal voussoir (7) of push rod (6), the both sides fixedly connected with voussoir (8) of convex seat (3) inside, the inclined plane of voussoir (8) contacts with the inclined plane of trapezoidal voussoir (7), the top of voussoir (8) is inlayed and is had magnetic resistor (81), magnetic resistor (81) for apart from magnet (61) big, the distance magnet (61) is close to the bottom of magnet (82), the lower side of magnet (82) is moved down than the magnet (82), the bottom of lower side (82) is fixed with the fixed coil (82), the utility model discloses a high-frequency flash lamp, including base (14) and flash lamp (141), the top fixedly connected with cooling seat (9) of convex seat (3), be equipped with the through-hole at convex seat (3) middle part and make cooling seat (9) and inlet port (2) intercommunication, the through-hole at convex seat (3) middle part is established to the both sides concave form, the side of cooling seat (9) is equipped with cooling chamber (10), the outside fixedly connected with heat dissipation layer (12) of cooling seat (9), the upside fixedly connected with base (14) of cooling seat (9), the top fixedly connected with flash lamp (141) of base (14), the top middle part fixedly connected with output (16) of base (14), the bottom and the pressure sensor (15) of output (16) are connected, the outside fixedly connected with shell (17) of convex seat (3), the outside that shell (17) are located the inboard of the one end of convex seat (3) upside and the outside of cooling seat (9) and the outside fixedly connected with heat dissipation layer (12), the inside of shell (17) is equipped with wire casing (171), wire casing (171) inside is laid, wire (83) and the high-frequency flash lamp (141) can be passed through with the output (141) and the high-frequency flash lamp (141) is judged to get into through the high-frequency flash lamp (141), meanwhile, the pressure can be further determined through an instrument connected with the output end (16), so that the reaction speed of the equipment is improved.
2. A high sensitivity pressure sensor according to claim 1, wherein: the cooling cavity (10) is a closed cavity surrounded by the cooling seat (9) and 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 CN113358270A (en) | 2021-09-07 |
| CN113358270B true CN113358270B (en) | 2024-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110434162.6A Active CN113358270B (en) | 2021-04-22 | 2021-04-22 | High-sensitivity pressure sensor |
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| Country | Link |
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| CN (1) | CN113358270B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5320123A (en) * | 1993-05-24 | 1994-06-14 | Honeywell Inc. | Valve with dynamic function checking capability |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8857277B2 (en) * | 2011-09-13 | 2014-10-14 | Grand Mate Co., Ltd. | Pressure gauge and pressure detecting circuit thereof |
-
2021
- 2021-04-22 CN CN202110434162.6A patent/CN113358270B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5320123A (en) * | 1993-05-24 | 1994-06-14 | Honeywell Inc. | Valve with dynamic function checking capability |
| 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 |
|---|---|
| CN113358270A (en) | 2021-09-07 |
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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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