CN110044535A - A kind of gas detection method - Google Patents
A kind of gas detection method Download PDFInfo
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- CN110044535A CN110044535A CN201910410708.7A CN201910410708A CN110044535A CN 110044535 A CN110044535 A CN 110044535A CN 201910410708 A CN201910410708 A CN 201910410708A CN 110044535 A CN110044535 A CN 110044535A
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- pressure transmission
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- air pressure
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- 238000001514 detection method Methods 0.000 title claims abstract description 56
- 230000008859 change Effects 0.000 claims abstract description 43
- 230000033001 locomotion Effects 0.000 claims abstract description 19
- 239000007789 gas Substances 0.000 claims description 139
- 230000005540 biological transmission Effects 0.000 claims description 63
- 238000000034 method Methods 0.000 claims description 14
- 230000035945 sensitivity Effects 0.000 claims description 10
- 230000001960 triggered effect Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 230000006399 behavior Effects 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
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- 230000014759 maintenance of location Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003287 optical effect Effects 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
- G01L9/08—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 piezoelectric devices, i.e. electric circuits therefor
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The embodiment of the invention discloses a kind of gas detection methods, comprising: passes through the air pressure change in mechanical motion mode detection gas path；The air pressure change is passed out in the form of the mechanical movement；Convert the air pressure change passed out to the variation of electric signal；Variation according to the electric signal determines in the gas path with the presence or absence of gas.Pass through the example scheme, it realizes mechanization that external equipment is detected with gas and electric signal combines, it avoids and detects the problem of influencing existing for gas situation vulnerable to external factor using software algorithm merely, it realizes real-time, the reliable monitoring to external equipment gas situation, improves detection accuracy.
Description
Technical field
The present embodiments relate to control technology, espespecially a kind of gas detection method.
Background technique
Existing electronics barostat realizes the real-time adjustment and calibration to output pressure, system using software algorithm
For headless device gaseity and there is peripheral apparatus gaseity, algorithmically there is biggish difference, therefore system needs
Accurately to know current state, that is, whether there is external equipment gas.
Current pure software algorithm is the air pressure change value that is based only in the unit time as discrimination standard, is had to differentiate
Peripheral hardware gas situation, but whether the source of air pressure change value is not considered reliably.And actually using in gas, individual is using
To all having a certain difference property in air pressure demand, use habit, usage scenario when gas, it is easy to cause air pressure change, because
This, is based purely on software algorithm to discriminate whether that it is also less reliable that there are external equipment gas, is easy by more external factor
It influences.
Summary of the invention
The embodiment of the invention provides a kind of gas detection method, can be realized the detection of external equipment gas mechanization and
Electric signal combines, and is not easily susceptible to external factor influence, realizes real-time, the reliable monitoring to external equipment gas situation.
In order to reach purpose of the embodiment of the present invention, the embodiment of the invention provides a kind of gas detection method, the methods
May include:
Pass through the air pressure change in mechanical motion mode detection gas path；
The air pressure change is passed out in the form of the mechanical movement；
Convert the air pressure change passed out to the variation of electric signal；
Variation according to the electric signal determines in the gas path with the presence or absence of gas.
In an exemplary embodiment of the present invention, the air pressure change by mechanical motion mode detection gas path
May include:
It is contacted by the gas contact jaw of preset gas pressure transmission unit with the gas in the gas path；Its
In, the gas contact jaw is set in the gas path；
When the gas contact jaw starts mobile, determine that there are air pressure changes in the gas path.
In an exemplary embodiment of the present invention, the gas pressure transmission unit can be piston apparatus；The piston
Device may include: piston main body, pressure transmission end and the gas contact jaw；The gas contact jaw and the pressure transmission
End can be located at the both ends of the piston main body.
In an exemplary embodiment of the present invention, described to pass out the air pressure change in the form of the mechanical movement
May include:
In the gas contact jaw when starting mobile under the air pressure in the gas path pushes, the piston main body and
The pressure transmission end is mobile to the direction far from the gas path with the gas contact jaw, and the air pressure is become
Change is passed out by the pressure transmission end.
In an exemplary embodiment of the present invention, the air pressure change that will be passed out is converted into the change of electric signal
Change may include:
While mobile to the direction far from the gas path at the pressure transmission end, the pressure transmission end is close
Preset piezoelectric signal converting unit, and after the pressure transmission end is contacted with the piezoelectric signal converting unit described in change
The state of piezoelectric signal converting unit itself；
Wherein, different level signals is generated when the piezoelectric signal converting unit is in different states.
In an exemplary embodiment of the present invention, described to be connect at the pressure transmission end and the piezoelectric signal converting unit
The state for changing the piezoelectric signal converting unit itself after touch may include:
After the pressure transmission end is contacted with the piezoelectric signal converting unit, the shape of the piezoelectric signal converting unit
State control device is triggered by the pressure transmission end, changes the piezoelectric signal converting unit itself by the behavior control device
State；Alternatively,
After the pressure transmission end is contacted with the piezoelectric signal converting unit, the company of the piezoelectric signal converting unit
Binding structure is changed by the pressure transmission end, realizes the state for changing the piezoelectric signal converting unit itself.
In an exemplary embodiment of the present invention, the piezoelectric signal converting unit may include: that can be separated from each other
First elastic slice and the second elastic slice；
First elastic slice is connected with preset first terminals, second elastic slice and preset second terminals phase
Even；
The systematically connection of first terminals and preset control unit, second terminals and the control are single
The signal detection mouth of member is connected, and second terminals are in pull-up state；
Wherein, when first elastic slice and second elastic slice are separated from each other and contact with each other formula, described control unit
Detect different level；The different level includes high level and low level.
In an exemplary embodiment of the present invention, the connection structure of the piezoelectric signal converting unit is by the pressure transmission
End changes
In the pressure transmission end and the piezoelectric signal converting unit contact process, it is inserted into the pressure transmission end
Between first elastic slice and second elastic slice, first elastic slice and second elastic slice separation.
In an exemplary embodiment of the present invention, whether variation according to the electric signal determines in the gas path and deposits
May include: in gas
When detecting the electric signal is high level, determine that there are gases in the gas path；
When detecting the electric signal is low level, determine that there is no gases in the gas path.
In an exemplary embodiment of the present invention, bullet can be set on first elastic slice and/or second elastic slice
Property device；The elastic force direction of the elastic device is identical as the moving direction of the gas pressure transmission unit；
The method can also include: according to on the gas path air pressure detect when level of sensitivity demand come
The elastic force of the elastic device is set；
Wherein, required air pressure detection sensitivity is bigger, and set elastic force is smaller；Required air pressure detection sensitivity is got over
Small, set elastic force is bigger.
The gas detection method of the embodiment of the present invention may include: by the gas in mechanical motion mode detection gas path
Buckling；The air pressure change is passed out in the form of the mechanical movement；The air pressure change passed out is converted
For the variation of electric signal；Variation according to the electric signal determines in the gas path with the presence or absence of gas.Pass through the implementation
Example scheme, realizes mechanization that external equipment detect with gas and electric signal combines, and avoids and uses software algorithm merely
Come detect existing for gas situation vulnerable to external factor influence the problem of, realize to external equipment gas situation it is real-time, can
By monitoring, detection accuracy is improved.
The other feature and advantage of the embodiment of the present invention will illustrate in the following description, also, partly from explanation
It is become apparent in book, or understand through the implementation of the invention.The purpose of the embodiment of the present invention and other advantages can pass through
Specifically noted structure is achieved and obtained in the specification, claims and drawings.
Detailed description of the invention
Attached drawing is used to provide one for further understanding technical solution of the embodiment of the present invention, and constituting specification
Point, it is used to explain the present invention the technical solution of embodiment together with embodiments herein, does not constitute to the embodiment of the present invention
The limitation of technical solution.
Fig. 1 is the gas detection method flow chart of the embodiment of the present invention；
Fig. 2 is the method flow by the air pressure change in mechanical motion mode detection gas path of the embodiment of the present invention
Figure；
Fig. 3 is the gas-detecting device schematic diagram of the embodiment of the present invention.
Specific embodiment
Understand in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing pair
The embodiment of the present invention is described in detail.It should be noted that in the absence of conflict, embodiment and reality in the application
The feature applied in example can mutual any combination.
Step shown in the flowchart of the accompanying drawings can be in a computer system such as a set of computer executable instructions
It executes.Also, although logical order is shown in flow charts, and it in some cases, can be to be different from herein suitable
Sequence executes shown or described step.
The embodiment of the invention provides a kind of gas detection methods, as shown in Figure 1, the method may include S101-
S104:
S101, pass through the air pressure change in mechanical motion mode detection gas path.
In an exemplary embodiment of the present invention, as shown in Fig. 2, it is described by mechanical motion mode detection gas path
Air pressure change may include S201-S202:
S201, it is connect by gas contact jaw and the gas in the gas path of preset gas pressure transmission unit
Touching；Wherein, the gas contact jaw is set in the gas path.
S202, when the gas contact jaw starts mobile, determine that there are air pressure changes in the gas path.
In an exemplary embodiment of the present invention, as shown in figure 3, the gas pressure transmission unit 1 can fill for piston
It sets；The piston apparatus may include: piston main body 13, pressure transmission end 12 and the gas contact jaw 11；The gas connects
Contravention 11 and the pressure transmission end 12 can be located at the both ends of the piston main body 13.
In an exemplary embodiment of the present invention, gas contact jaw 11 is in outlet gas flow path (gas path i.e. above-mentioned)
On, when gases are used, it will receive the pressure of outlet gas flow path generation on the end face of gas contact jaw 11.
In an exemplary embodiment of the present invention, when the air pressure in the gas path is greater than or equal to preset air pressure threshold
When value, air pressure of the gas contact jaw 11 in gas path starts to move under pushing.
S102, the air pressure change is passed out in the form of the mechanical movement.
In an exemplary embodiment of the present invention, described to pass out the air pressure change in the form of the mechanical movement
May include:
In the gas contact jaw 11 when starting mobile under the air pressure in the gas path pushes, the piston main body
13 and the pressure transmission end 12 it is mobile to the direction far from the gas path with the gas contact jaw 11, by institute
Air pressure change is stated to pass out by the pressure transmission end 12.
In an exemplary embodiment of the present invention, the end face of gas contact jaw 11 will receive the pressure P1 of outlet gas flow path generation
After, as gas-detecting device internal cavity (referring mainly to space locating for pressure transmission end) gas be atmospheric pressure P0, due to working as
When having gas on outlet gas flow path, general pressure P1 can be much larger than atmospheric pressure P0, therefore single-piece piston device can move integrally.
As shown in figure 3, whole move up can occur for single-piece piston device.
S103, the variation for converting the air pressure change passed out to electric signal.
In an exemplary embodiment of the present invention, the air pressure change that will be passed out is converted into the change of electric signal
Change may include:
While mobile to the direction far from the gas path at the pressure transmission end 12, the pressure transmission end 12
Close to preset piezoelectric signal converting unit 2, and after the pressure transmission end 12 is contacted with the piezoelectric signal converting unit 2
Change the state of the piezoelectric signal converting unit 2 itself；
Wherein, different level signals is generated when the piezoelectric signal converting unit 2 is in different states.
In an exemplary embodiment of the present invention, described at the pressure transmission end 12 and the piezoelectric signal converting unit
Changing the state of the piezoelectric signal converting unit 2 itself after 2 contacts may include:
After the pressure transmission end 12 is contacted with the piezoelectric signal converting unit 2, the piezoelectric signal converting unit 2
Behavior control device triggered by the pressure transmission end 12, by the behavior control device change the piezoelectric signal convert it is single
The state of member 2 itself；Alternatively,
After the pressure transmission end 12 is contacted with the piezoelectric signal converting unit 2, the piezoelectric signal converting unit 2
Connection structure changed by the pressure transmission end 12, realize the state for changing the piezoelectric signal converting unit 2 itself.
In an exemplary embodiment of the present invention, in the piezoelectric signal converting unit 2 with the pressure transmission end 12
A behavior control device can be set in the side of contact, which can be triggered by pressure transmission end 12,
When the behavior control device is triggered, the piezoelectric signal converting unit 2 can be made to change the state of itself (for example, changing
Flexible electricity and off-position, or change internal circuit connection status), in the state of the piezoelectric signal converting unit 2 itself
When being changed, it can accordingly change output level, which can be high level and low level, to indicate in gas path
The variation of air pressure.
In an exemplary embodiment of the present invention, the piezoelectric signal can also be changed by the pressure transmission end 12 to turn
The connection structure (mechanical structure) of unit 2 itself is changed, to realize the state for changing the piezoelectric signal converting unit 2 itself.Under
The example scheme will be described in detail in face.
In an exemplary embodiment of the present invention, as shown in figure 3, the piezoelectric signal converting unit 2 may include: can
The first elastic slice 21 and the second elastic slice 22 being separated from each other；
First elastic slice 21 is connected with preset first terminals 211, and second elastic slice 22 connects with preset second
Line end 221 is connected；
The systematically connection of first terminals 211 and preset control unit, second terminals 221 with it is described
The signal detection mouth of control unit is connected, and the signal detection mouth can also be connected with the pull-up circuit in described control unit；
Wherein, when first elastic slice 21 and second elastic slice 22 are separated from each other, the signal detection end is detected
High level；When first elastic slice 21 and second elastic slice 22 contact with each other, the signal detection end detects low level.
In an exemplary embodiment of the present invention, the connection structure of the piezoelectric signal converting unit 2 is passed by the pressure
Defeated end 12 changes
In the pressure transmission end 12 and 2 contact process of piezoelectric signal converting unit, with the pressure transmission end
12 are inserted between first elastic slice 21 and second elastic slice 22, first elastic slice 21 and second elastic slice 22 separation.
In an exemplary embodiment of the present invention, first elastic slice 21 and second elastic slice 22 are conductive material,
In the initial state, first elastic slice 21 and second elastic slice 22 can be defaulted in the state to contact with each other, to make
It obtains first elastic slice 21 and second elastic slice 22 forms the systematically single with the external control of the external control unit outside
Conducting wire between the signal detection end of member, so that signal detection end is grounded, signal detection end detects low level.
In an exemplary embodiment of the present invention, described when the pressure transmission end 12 is moved to certain position
Pressure transmission end 12 can be inserted between first elastic slice 21 and second elastic slice 22, to disconnect first elastic slice 21
With the short circuit of second elastic slice 22, at this time the signal detection end of the external control unit outside with systematically disconnect, due to described
Signal detection end is also connected with the pull-up circuit in the external control unit outside, and therefore, the signal detection end is in upper at this time
Tension state detects high level.
In an exemplary embodiment of the present invention, 21 He of the first elastic slice is inserted into for the ease of the pressure transmission end 12
Between second elastic slice 22, the top at pressure transmission end 12 can be set to wedge shape or tip.
In an exemplary embodiment of the present invention, it can be set on first elastic slice 21 and/or second elastic slice 22
Flexible device 23；The elastic force direction of the elastic device 23 is identical as the moving direction of the gas pressure transmission unit 1；
The method can also include: according to on the gas path air pressure detect when level of sensitivity demand come
The elastic force of the elastic device 23 is set；
Wherein, required air pressure detection sensitivity is bigger, and set elastic force is smaller；Required air pressure detection sensitivity is got over
Small, set elastic force is bigger.
In an exemplary embodiment of the present invention, the elastic device 23 can be spring.
In an exemplary embodiment of the present invention, the one of elastic device 23 (specifically can be respectively as shown in 23-1 and 23-2)
End can be fixed on first elastic slice 21 and second elastic slice 22, and the other end can be fixed on piston main body 13, whole
Support of a piston by elastic device 23.
In an exemplary embodiment of the present invention, it can be realized by the elastic force of adjustment spring to air pressure detection sensitivity
It adjusts, in order to avoid error detection can choose suitable bullet in conjunction with practical normal use demand caused by detection threshold is too low
Spring force, for example, can be set to when the air pressure of P1 is when within 1KG air pressure, pressure transmission end 12, which can not be moved to, disconnects institute
State the position of the first elastic slice 21 and second elastic slice 22.
S104, variation according to the electric signal are determined in the gas path with the presence or absence of gas.
In an exemplary embodiment of the present invention, whether variation according to the electric signal determines in the gas path and deposits
May include: in gas
When detecting the electric signal is high level, determine that there are gases in the gas path；
When detecting the electric signal is low level, determine that there is no gases in the gas path.
The gas detection method of the embodiment of the present invention may include: by the gas in mechanical motion mode detection gas path
Buckling；The air pressure change is passed out in the form of the mechanical movement；The air pressure change passed out is converted
For the variation of electric signal；Variation according to the electric signal determines in the gas path with the presence or absence of gas.Pass through the implementation
Example scheme, realizes mechanization that external equipment detect with gas and electric signal combines, and avoids and uses software algorithm merely
Come detect existing for gas situation vulnerable to external factor influence the problem of, realize to external equipment gas situation it is real-time, can
By monitoring, detection accuracy is improved.
It will appreciated by the skilled person that whole or certain steps, system, dress in method disclosed hereinabove
Functional module/unit in setting may be implemented as software, firmware, hardware and its combination appropriate.In hardware embodiment,
Division between the functional module/unit referred in the above description not necessarily corresponds to the division of physical assemblies；For example, one
Physical assemblies can have multiple functions or a function or step and can be executed by several physical assemblies cooperations.Certain groups
Part or all components may be implemented as by processor, such as the software that digital signal processor or microprocessor execute, or by
It is embodied as hardware, or is implemented as integrated circuit, such as specific integrated circuit.Such software can be distributed in computer-readable
On medium, computer-readable medium may include computer storage medium (or non-transitory medium) and communication media (or temporarily
Property medium).As known to a person of ordinary skill in the art, term computer storage medium is included in for storing information (such as
Computer readable instructions, data structure, program module or other data) any method or technique in the volatibility implemented and non-
Volatibility, removable and nonremovable medium.Computer storage medium include but is not limited to RAM, ROM, EEPROM, flash memory or its
His memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storages, magnetic holder, tape, disk storage or other
Magnetic memory apparatus or any other medium that can be used for storing desired information and can be accessed by a computer.This
Outside, known to a person of ordinary skill in the art to be, communication media generally comprises computer readable instructions, data structure, program mould
Other data in the modulated data signal of block or such as carrier wave or other transmission mechanisms etc, and may include any information
Delivery media.
Claims (10)
1. a kind of gas detection method, which is characterized in that the described method includes:
Pass through the air pressure change in mechanical motion mode detection gas path；
The air pressure change is passed out in the form of the mechanical movement；
Convert the air pressure change passed out to the variation of electric signal；
Variation according to the electric signal determines in the gas path with the presence or absence of gas.
2. gas detection method according to claim 1, which is characterized in that described to pass through mechanical motion mode detection gas
Air pressure change in path includes:
It is contacted by the gas contact jaw of preset gas pressure transmission unit with the gas in the gas path；Wherein, institute
Gas contact jaw is stated to be set in the gas path；
When the gas contact jaw starts mobile, determine that there are air pressure changes in the gas path.
3. gas detection method according to claim 2, which is characterized in that the gas pressure transmission unit is piston dress
It sets；The piston apparatus includes: piston main body, pressure transmission end and the gas contact jaw；The gas contact jaw and described
Pressure transmission end is located at the both ends of the piston main body.
4. gas detection method according to claim 3, which is characterized in that it is described by the air pressure change with the machinery
Forms of motion, which passes out, includes:
In the gas contact jaw when starting mobile under the air pressure in the gas path pushes, the piston main body and described
Pressure transmission end is mobile to the direction far from the gas path with the gas contact jaw, and the air pressure change is led to
The pressure transmission end is crossed to pass out.
5. gas detection method according to claim 4, which is characterized in that the air pressure change that will be passed out
The variation for being converted into electric signal includes:
While mobile to the direction far from the gas path at the pressure transmission end, the pressure transmission end is close to default
Piezoelectric signal converting unit, and change the piezoelectricity after the pressure transmission end is contacted with the piezoelectric signal converting unit
The state of signal conversion unit itself；
Wherein, different level signals is generated when the piezoelectric signal converting unit is in different states.
6. gas detection method according to claim 5, which is characterized in that described at the pressure transmission end and the pressure
Changing the state of the piezoelectric signal converting unit itself after the contact of electric signal converting unit includes:
After the pressure transmission end is contacted with the piezoelectric signal converting unit, the state control of the piezoelectric signal converting unit
Device processed is triggered by the pressure transmission end, changes the shape of the piezoelectric signal converting unit itself by the behavior control device
State；Alternatively,
After the pressure transmission end is contacted with the piezoelectric signal converting unit, the connection knot of the piezoelectric signal converting unit
Structure is changed by the pressure transmission end, realizes the state for changing the piezoelectric signal converting unit itself.
7. gas detection method according to claim 6, which is characterized in that the piezoelectric signal converting unit includes: energy
The first elastic slice and the second elastic slice being enough separated from each other；
First elastic slice is connected with preset first terminals, and second elastic slice is connected with preset second terminals；
The systematically connection of first terminals and preset control unit, second terminals and described control unit
Signal detection mouth is connected, and second terminals are in pull-up state；
Wherein, when first elastic slice and second elastic slice are separated from each other and contact with each other formula, described control unit detection
To different level；The different level includes high level and low level.
8. gas detection method according to claim 7, which is characterized in that the connection knot of the piezoelectric signal converting unit
Structure is changed by the pressure transmission end
In the pressure transmission end and the piezoelectric signal converting unit contact process, with described in the insertion of the pressure transmission end
Between first elastic slice and second elastic slice, first elastic slice and second elastic slice separation.
9. gas detection method according to claim 1, which is characterized in that described in variation according to the electric signal determines
Include: with the presence or absence of gas in gas path
When detecting the electric signal is high level, determine that there are gases in the gas path；
When detecting the electric signal is low level, determine that there is no gases in the gas path.
10. gas detection method according to claim 7, which is characterized in that first elastic slice and/or second bullet
On piece is provided with elastic device；The moving direction phase in the elastic force direction of the elastic device and the gas pressure transmission unit
Together；
The method also includes: it is arranged according to level of sensitivity demand when being detected to the air pressure on the gas path described
The elastic force of elastic device；
Wherein, required air pressure detection sensitivity is bigger, and set elastic force is smaller；Required air pressure detection sensitivity is smaller,
Set elastic force is bigger.
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|---|---|---|---|
| CN201910410708.7A CN110044535A (en) | 2019-05-17 | 2019-05-17 | A kind of gas detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910410708.7A CN110044535A (en) | 2019-05-17 | 2019-05-17 | A kind of gas detection method |
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| CN110044535A true CN110044535A (en) | 2019-07-23 |
Family
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203910670U (en) * | 2014-06-28 | 2014-10-29 | 浙江师范大学 | Magneto rheological fluid-based pressure adjustable switch |
| CN206874895U (en) * | 2017-06-22 | 2018-01-12 | 浙江德卡控制阀仪表有限公司 | Gas control pressure opening and closing valve |
| CN207199480U (en) * | 2017-08-21 | 2018-04-06 | 宁波融毅机电有限公司 | A kind of clutch switch |
| CN207353106U (en) * | 2017-10-31 | 2018-05-11 | 重庆京渝激光技术有限公司 | A kind of Anti-mis-stepping hydraulic pressure floor push for laser cure apparatus |
-
2019
- 2019-05-17 CN CN201910410708.7A patent/CN110044535A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203910670U (en) * | 2014-06-28 | 2014-10-29 | 浙江师范大学 | Magneto rheological fluid-based pressure adjustable switch |
| CN206874895U (en) * | 2017-06-22 | 2018-01-12 | 浙江德卡控制阀仪表有限公司 | Gas control pressure opening and closing valve |
| CN207199480U (en) * | 2017-08-21 | 2018-04-06 | 宁波融毅机电有限公司 | A kind of clutch switch |
| CN207353106U (en) * | 2017-10-31 | 2018-05-11 | 重庆京渝激光技术有限公司 | A kind of Anti-mis-stepping hydraulic pressure floor push for laser cure apparatus |
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