CN110044536A - A kind of gas-detecting device - Google Patents
A kind of gas-detecting device Download PDFInfo
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- CN110044536A CN110044536A CN201910413870.4A CN201910413870A CN110044536A CN 110044536 A CN110044536 A CN 110044536A CN 201910413870 A CN201910413870 A CN 201910413870A CN 110044536 A CN110044536 A CN 110044536A
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- 230000035945 sensitivity Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
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- 238000006243 chemical reaction Methods 0.000 claims 2
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 74
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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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Abstract
The embodiment of the invention discloses a kind of gas-detecting devices, comprising: gas pressure transmission unit and piezoelectric signal converting unit;First transmission end of gas pressure transmission unit is located on gas path, and the second transmission end is set as being moved with the transformation of air pressure in gas path, air pressure is passed to piezoelectric signal converting unit for being in contact with piezoelectric signal converting unit;The pressure signal input end of piezoelectric signal converting unit with the second transmission end for being in contact, electrical signal is connected with external control unit outside, it is set as the state of the mobile change piezoelectric signal converting unit itself according to gas pressure transmission unit, different level signals is transmitted, realizes gas detection.The example scheme realizes the 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 Electromechanical Control technology, espespecially a kind of gas-detecting device.
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-detecting device, 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-detecting devices, may include:
Gas pressure transmission unit and piezoelectric signal converting unit;
First transmission end of the gas pressure transmission unit can be located on gas path, and the second transmission end can be used for
It is in contact with the piezoelectric signal converting unit, the gas pressure transmission unit can be set to gas in the gas path
The transformation of pressure is moved, and the air pressure is passed to the piezoelectric signal converting unit;
The pressure signal input end of the piezoelectric signal converting unit can be used for being in contact with second transmission end, electricity
Signal output end can be connected with external control unit outside, and the piezoelectric signal converting unit can be set as according to the gas pressure
The state of the mobile change of the power transmission unit piezoelectric signal converting unit itself, wherein the piezoelectric signal converting unit
Different level signals is transmitted when in different states to the external control unit outside, realizes gas detection.
In an exemplary embodiment of the present invention, the gas pressure transmission unit may include: piston;The piston can
To include: piston main body and gas contact jaw and the pressure transmission end for being located at the piston main body both ends;
Wherein, the gas contact jaw is as first transmission end;The pressure transmission end is as second transmission
End.
In an exemplary embodiment of the present invention, the gas pressure transmission unit with air pressure in the gas path change
The movement of swap-in row may include:
When the air pressure in the gas path is greater than or equal to preset air pressure threshold value, first transmission end is described
Air pressure in gas path starts to move under pushing, and second transmission end is with first transmission end to close to the pressure
The direction of electric signal converting unit is mobile.
In an exemplary embodiment of the present invention, the piezoelectric signal converting unit is according to the gas pressure transmission unit
The state of the mobile change piezoelectric signal converting unit itself may include:
In second transmission end to after the movement of the direction of the piezoelectric signal converting unit, the piezoelectric signal turns
The behavior control device for changing unit is triggered by second transmission end, is changed the piezoelectric signal by the behavior control device and is turned
Change the state of unit itself;Alternatively,
In second transmission end to after the movement of the direction of the piezoelectric signal converting unit, the piezoelectric signal turns
The connection structure for changing unit is changed by second 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;
The contact jaw of first elastic slice and second elastic slice is the pressure signal input end, on first elastic slice
First lead end and second elastic slice on the second lead end be the electrical signal.
In an exemplary embodiment of the present invention, the first lead end can be with the external control unit outside systematically
It is connected, second lead end can be connected with the signal detection end of the external control unit outside, and the signal detection end may be used also
To be connected with the pull-up circuit in the external control unit outside;
Wherein, when first elastic slice and second elastic slice are separated from each other, the signal detection end detects high electricity
It is flat;When first elastic slice and second elastic slice 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 is transmitted by described second
End change may include: it is mobile to the direction close to the piezoelectric signal converting unit in second transmission end and with the pressure
In electric signal converting unit contact process, it is inserted between first elastic slice and second elastic slice with second transmission end,
First elastic slice and second elastic slice separation.
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.
In an exemplary embodiment of the present invention, the elastic force of the elastic device can be according to the gas path
On air pressure detection when level of sensitivity demand be arranged;
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 can be spring.
The compressor control system of the embodiment of the present invention may include: a kind of gas-detecting device, may include: gas pressure
Power transmission unit and piezoelectric signal converting unit;First transmission end of the gas pressure transmission unit can be located at gas path
On, the second transmission end can be used for being in contact with the piezoelectric signal converting unit, and the gas pressure transmission unit can be set
It is set to and is moved with the transformation of air pressure in the gas path, the air pressure is passed into the piezoelectric signal converting unit;
The pressure signal input end of the piezoelectric signal converting unit can be used for being in contact with second transmission end, electric signal output
End can be connected with external control unit outside, and the piezoelectric signal converting unit can be set single to be transmitted according to the gas pressure
The state of the mobile change piezoelectric signal converting unit itself of member, wherein the piezoelectric signal converting unit is in difference
State when transmit different level signals to the external control unit outside, realize gas detection.It is real by the example scheme
Mechanization that external equipment is detected with gas is showed and electric signal combines, has avoided and simple gas is used to detect using software algorithm
The problem of influencing existing for situation vulnerable to external factor, realizes real-time, the reliable monitoring to external equipment gas situation, improves
Detection accuracy.
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-detecting device block diagram of the embodiment of the present invention;
Fig. 2 is the gas-detecting device schematic view of the mounting position of the embodiment of the present invention;
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.
In order to reach purpose of the embodiment of the present invention, the embodiment of the invention provides a kind of gas-detecting devices, such as Fig. 1 institute
Show, may include: gas pressure transmission unit 1 and piezoelectric signal converting unit 2;
First transmission end 11 of the gas pressure transmission unit 1 can be located on gas path, and the second transmission end 12 can
With for being in contact with the piezoelectric signal converting unit 2, the gas pressure transmission unit 1 be can be set to the gas
The transformation of air pressure is moved in path, and the air pressure is passed to the piezoelectric signal converting unit 2;
The pressure signal input end 21 of the piezoelectric signal converting unit 2 can be used for connecting with second transmission end
Touching, electrical signal 22 can be connected with external control unit outside, and the piezoelectric signal converting unit 2 can be set as according to institute
State the state of the mobile change piezoelectric signal converting unit 2 itself of gas pressure transmission unit 1, wherein the piezoelectricity letter
Number converting unit 2 transmits different level signals to the external control unit outside when being in different states, realize gas detection.
In an exemplary embodiment of the present invention, the gas-detecting device of the embodiment of the present invention can be set in such as Fig. 2 institute
At the position shown.
In an exemplary embodiment of the present invention, as shown in figure 3, the gas pressure transmission unit 1 may include: work
Plug;The piston may include: piston main body 13 and the gas contact jaw and pressure for being located at the piston main body both ends
Transmission end;
Wherein, the gas contact jaw is as first transmission end 11;The pressure transmission end is passed as described second
Defeated end 12.
In an exemplary embodiment of the present invention, gas contact jaw is on outlet gas flow path (gas path i.e. above-mentioned),
When gases are used, it will receive the pressure of outlet gas flow path generation on the end face of gas contact jaw.
In an exemplary embodiment of the present invention, the gas pressure transmission unit 1 is with air pressure in the gas path
Transformation carries out movement and may include:
When the air pressure in the gas path is greater than or equal to preset air pressure threshold value, first transmission end is described
Air pressure in gas path starts to move under pushing, and second transmission end is with first transmission end to close to the pressure
The direction of electric signal converting unit is mobile.
In an exemplary embodiment of the present invention, the end face of gas contact jaw will receive outlet gas flow path generation pressure P1 with
Afterwards, as gas-detecting device internal cavity (referring mainly to space locating for pressure transmission end) gas be atmospheric pressure P0, due to when go out
When having gas on gas circuit diameter, general pressure P1 can be much larger than atmospheric pressure P0, therefore single-piece piston device can move integrally.Such as
Shown in Fig. 3, whole move up can occur for single-piece piston device.
In an exemplary embodiment of the present invention, the piezoelectric signal converting unit 2 is transmitted single according to the gas pressure
The state of the mobile change piezoelectric signal converting unit 2 itself of member 1 may include:
In second transmission end 12 to after the movement of the direction of the piezoelectric signal converting unit 2, the piezoelectricity is believed
The behavior control device of number converting unit 2 can be triggered by second transmission end 12, change institute by the behavior control device
State the state of piezoelectric signal converting unit 2 itself;Alternatively,
In second transmission end 12 to after the movement of the direction of the piezoelectric signal converting unit 2, the piezoelectricity is believed
The connection structure of number converting unit 2 is changed by second transmission end 12, realizes and changes the piezoelectric signal converting unit 2 itself
State.
In an exemplary embodiment of the present invention, in the piezoelectric signal converting unit 2 with second transmission end 12
A behavior control device can be set in the side of contact, which can be triggered by the second 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 second 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 23 and the second elastic slice 24 being separated from each other;
The contact jaw of first elastic slice 23 and second elastic slice 24 be the pressure signal input end 21, described first
The second lead end 241 on first lead end 231 and second elastic slice 24 on elastic slice 23 is the electrical signal 22.
In an exemplary embodiment of the present invention, the first lead end 231 can be with the external control unit outside
System ground is connected, and second lead end 241 can be connected with the signal detection end of the external control unit outside, the signal detection
End can also be connected with the pull-up circuit in the external control unit outside;
Wherein, when first elastic slice 23 and second elastic slice 24 are separated from each other, the signal detection end is detected
High level;When first elastic slice 23 and second elastic slice 24 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 described second
It may include: mobile simultaneously in the direction of second transmission end 12 to the close piezoelectric signal converting unit 2 that defeated end 12, which changes,
In 2 contact process of piezoelectric signal converting unit, first elastic slice 23 and described is inserted into second transmission end 12
Between second elastic slice 24, first elastic slice 23 and second elastic slice 24 separation.
In an exemplary embodiment of the present invention, first elastic slice 23 and second elastic slice 24 are conductive material,
In the initial state, first elastic slice 23 and second elastic slice 24 can be defaulted in the state to contact with each other, to make
It obtains first elastic slice 23 and second elastic slice 24 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 second transmission end 12 is moved to certain position
Second transmission end 12 can be inserted between first elastic slice 23 and second elastic slice 24, to disconnect first elastic slice 23
With the short circuit of second elastic slice 24, 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, 23 He of the first elastic slice is inserted into for the ease of second transmission end 12
Between second elastic slice 24, the top of the second transmission end 12 can be set to wedge shape or tip.
In an exemplary embodiment of the present invention, as shown in figure 3, first elastic slice 23 and/or second elastic slice 24
On flexible device 25 can be set;It the elastic force direction of the elastic device 25 can be with the gas pressure transmission unit 1
Moving direction is identical.
In an exemplary embodiment of the present invention, the elastic device 25 can be spring.
In an exemplary embodiment of the present invention, the one of elastic device 25 (specifically can be respectively as shown in 25-1 and 25-2)
End can be fixed on first elastic slice 23 and second elastic slice 24, and the other end can be fixed on piston main body 13, whole
Support of a piston by elastic device 25.
In an exemplary embodiment of the present invention, the elastic force of the elastic device 25 can be according to the gas road
Level of sensitivity demand when air pressure detection on diameter is arranged;
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, 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, the second transmission end 12, which can not be moved to, disconnects institute
State the position of the first elastic slice 23 and second elastic slice 24.
The compressor control system of the embodiment of the present invention may include: a kind of gas-detecting device, may include: gas pressure
Power transmission unit and piezoelectric signal converting unit;First transmission end of the gas pressure transmission unit can be located at gas path
On, the second transmission end can be connected with the piezoelectric signal converting unit, the gas pressure transmission unit can be set to
The transformation of air pressure is moved in the gas path, and the air pressure is passed to the piezoelectric signal converting unit;The pressure
The pressure signal input end of electric signal converting unit can be used for being in contact with second transmission end, and electrical signal can be with
It is connected with external control unit outside, the piezoelectric signal converting unit can be set as according to the shifting of the gas pressure transmission unit
The dynamic state for changing the piezoelectric signal converting unit itself, wherein the piezoelectric signal converting unit is in different states
When transmit different level signals to the external control unit outside, realize gas detection.By the example scheme, realize outer
Portion sets the mechanization of cushion gas detection and electric signal combines, and avoids to detect using software algorithm merely and be deposited with gas situation
The problem of influence vulnerable to external factor, realize real-time, reliable monitoring to external equipment gas situation, improve detection
Precision.
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-detecting device characterized by comprising gas pressure transmission unit and piezoelectric signal converting unit;
First transmission end of the gas pressure transmission unit is located on gas path, and the second transmission end is used to believe with the piezoelectricity
Number converting unit is in contact, and the gas pressure transmission unit is set as being moved with the transformation of air pressure in the gas path
It is dynamic, the air pressure is passed into the piezoelectric signal converting unit;
The pressure signal input end of the piezoelectric signal converting unit with second transmission end for being in contact, electric signal output
End is connected with external control unit outside, and the piezoelectric signal converting unit is set as the movement according to the gas pressure transmission unit
Change the state of the piezoelectric signal converting unit itself, wherein when the piezoelectric signal converting unit is in different states
Different level signals is transmitted to the external control unit outside, realizes gas detection.
2. gas-detecting device according to claim 1, which is characterized in that the gas pressure transmission unit includes: work
Plug;The piston includes: piston main body and the gas contact jaw for being located at the piston main body both ends and pressure transmission end;
Wherein, the gas contact jaw is as first transmission end;The pressure transmission end is as second transmission end.
3. gas-detecting device according to claim 1 or 2, which is characterized in that the gas pressure transmission unit is with institute
The transformation for stating air pressure in gas path carries out movement and includes:
When the air pressure in the gas path is greater than or equal to preset air pressure threshold value, first transmission end is in the gas
Air pressure in path starts to move under pushing, and second transmission end is believed with first transmission end to close to the piezoelectricity
The direction of number converting unit is mobile.
4. gas-detecting device according to claim 3, which is characterized in that the piezoelectric signal converting unit is according to
The state of the mobile change of the gas pressure transmission unit piezoelectric signal converting unit itself includes:
In second transmission end to after the movement of the direction of the piezoelectric signal converting unit, the piezoelectric signal conversion is single
The behavior control device of member is triggered by second transmission end, is changed the piezoelectric signal by the behavior control device and is converted list
The state of member itself;Alternatively,
In second transmission end to after the movement of the direction of the piezoelectric signal converting unit, the piezoelectric signal conversion is single
The connection structure of member is changed by second transmission end, realizes the state for changing the piezoelectric signal converting unit itself.
5. gas-detecting device according to claim 4, 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;
The contact jaw of first elastic slice and second elastic slice is the pressure signal input end, the on first elastic slice
The second lead end on one lead end and second elastic slice is the electrical signal.
6. gas-detecting device according to claim 5, which is characterized in that
The first lead end is systematically connected with the external control unit outside, second lead end and the external control
The signal detection end of unit is connected, and the signal detection end is also connected with the pull-up circuit in the external control unit outside;
Wherein, when first elastic slice and second elastic slice are separated from each other, the signal detection end detects high level;When
When first elastic slice and second elastic slice contact with each other, the signal detection end detects low level.
7. gas-detecting device according to claim 5, which is characterized in that the connection knot of the piezoelectric signal converting unit
It includes: to move in second transmission end to the direction close to the piezoelectric signal converting unit that structure is changed by second transmission end
It is dynamic and with the piezoelectric signal converting unit contact process, first elastic slice and described the are inserted into second transmission end
Between two elastic slices, first elastic slice and second elastic slice separation.
8. gas-detecting device according to claim 5, 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.
9. gas-detecting device according to claim 8, which is characterized in that the elastic force of the elastic device is according to right
Level of sensitivity demand when air pressure detection on the gas path is arranged;
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.
10. gas-detecting device according to claim 9, which is characterized in that the elastic device is spring.
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