CN109771765A - A kind of control method and device and system of Breathing Suppotion equipment gas flow - Google Patents
A kind of control method and device and system of Breathing Suppotion equipment gas flow Download PDFInfo
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- CN109771765A CN109771765A CN201811636259.XA CN201811636259A CN109771765A CN 109771765 A CN109771765 A CN 109771765A CN 201811636259 A CN201811636259 A CN 201811636259A CN 109771765 A CN109771765 A CN 109771765A
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Abstract
The invention discloses the control method and device and system of a kind of Breathing Suppotion equipment gas flow, method includes: to obtain the gas flow size of Breathing Suppotion equipment；Judge whether gas flow size is less than preset flow value；If gas flow size is less than preset flow value, the gas pressure size of Breathing Suppotion equipment is obtained；Judge whether gas pressure size is less than preset pressure value；If gas pressure size is less than preset pressure value, control secondary speed increases.This method obtains gas flow and gas pressure information, judges and control, thus it is very fast and smoothly reach target flow size, overshoot phenomenon can be both prevented, and adjustment speed is fast.
Description
Technical field
The present invention relates to Breathing Suppotion equipment technical field more particularly to a kind of controls of Breathing Suppotion equipment gas flow
Method and device and system.
Background technique
The equipment that Breathing Suppotion equipment generally refers to assisted respiartion, such as: ventilator, breathing humidification instrument etc..
For breathing humidification instrument, when that will breathe humidification instrument applied to auxiliary, the flow in respiratory siphon is normal
It is not often that people are desired to be thought, at this moment just needs to breathe humidification instrument and carry out feedback regulation, existing breathing humidifying is controlled
Treat instrument and be used as feedback quantity typically merely by flow sensor, for control system flow, during adjusting flow there are two types of
Mode: quick mode under which, has biggish overshoot phenomenon after flow reaches target flow；Slow speed mode, which
Under, very little is overshooted, but adjustment speed is very slow.It if overshoot is larger, may be such that human body chokes, cause unnecessary safety
Hidden danger still if adjustment speed is smaller, cannot meet the requirement of user's desired flow in time, and it is hidden equally to will cause safety
Suffer from.
CN201210288511.9 discloses the linkage adjustment control method of respiratory rate and flow in a kind of ventilator,
By the corresponding relationship of respiratory rate and respiratory flow, flow adjusting is carried out, but does not relate to flow feedback and adjusts progress
Control.
Summary of the invention
In view of this, the control method and device and system of a kind of Breathing Suppotion equipment gas flow of the invention, we
Method is judged and control, by obtaining gas flow and gas pressure information to comparatively fast and smoothly reach target flow
Size.
A kind of control method of Breathing Suppotion equipment gas flow, method include:
S1. the gas flow size of Breathing Suppotion equipment is obtained；
S2. judge whether gas flow size is less than preset flow value；
If S3. gas flow size is less than preset flow value, the gas pressure size of Breathing Suppotion equipment is obtained；
S4. judge whether gas pressure size is less than preset pressure value；
If S5. gas pressure size is less than preset pressure value, control secondary speed increases.
It preferably, further include judging whether gas flow size is equal to preset flow value between the S1 and S2, if gas
Body uninterrupted is not equal to preset flow value, then carries out the judgement whether gas flow size is less than preset flow value.
Preferably, if the S2 judges that gas flow size is greater than preset flow value, further include:
Obtain the gas pressure size of Breathing Suppotion equipment；
Judge whether gas pressure size is greater than preset pressure value；
If gas pressure size is greater than preset pressure value, control secondary speed reduces.
Preferably, if gas pressure size is not more than preset pressure value, continue the gas for obtaining Breathing Suppotion equipment
Uninterrupted.
A kind of control device of Breathing Suppotion equipment gas flow, device include first acquisition unit, the first judging unit,
Second acquisition unit, second judgment unit and first control unit, the first acquisition unit, the first judging unit, second
Acquiring unit, second judgment unit and first control unit are sequentially connected, in which:
First acquisition unit, for obtaining the gas flow size of Breathing Suppotion equipment；
First judging unit, for judging whether gas flow size is less than preset flow value；
Second acquisition unit obtains the gas of Breathing Suppotion equipment if being less than preset flow value for gas flow size
Body pressure size；
Second judgment unit, for judging whether gas pressure size is less than preset pressure value；
First control unit, if being less than preset pressure value for gas pressure size, control secondary speed increases.
Preferably, further include third judging unit, the third judging unit be connected to first acquisition unit and
First judging unit, the third judging unit is for judging whether gas flow size is equal to preset flow value.
It preferably, further include third when first judging unit judges that gas flow size is greater than preset flow value
Acquiring unit, the 4th judging unit and the second control unit, in which:
Third acquiring unit, for obtaining the gas pressure size of Breathing Suppotion equipment；
4th judging unit, for judging whether gas pressure size is greater than preset pressure value；
Second control unit, if be greater than preset pressure value for gas pressure size, control secondary speed reduces.
Preferably, the 4th judging unit is also attached to first acquisition unit, when the 4th judging unit is judged
When gas pressure size is not more than preset pressure value, the gas flow that first acquisition unit continues to obtain Breathing Suppotion equipment is big
It is small.
A kind of control system of Breathing Suppotion equipment gas flow, system include control device, for detection gas flow
Flow sensor, pressure sensor and turbine for detection gas pressure, the flow sensor and pressure sensing
Flow and pressure data that device will test respectively are transmitted to the control device of connection, and the control device is to flow and pressure
Data analysis controls the turbine of connection.
Preferably, the turbine is also respectively connected in flow sensor and pressure sensor, the flow sensor with
And pressure sensor detects gas flow and pressure after turbine processing variation.
The beneficial effects of the present invention are: a kind of control method and device of Breathing Suppotion equipment gas flow of the invention
And system, this method obtain gas flow and gas pressure information, judge and control, to comparatively fast and smoothly reach mesh
Uninterrupted is marked, can both prevent overshoot phenomenon, and adjustment speed is fast.
Detailed description of the invention
Technical solution in order to illustrate the embodiments of the present invention more clearly, below will be to needed in embodiment description
Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, general for this field
For logical technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of schematic diagram of the control system of Breathing Suppotion equipment gas flow；
Fig. 2 is a kind of flow chart of the control method embodiment 1 of Breathing Suppotion equipment gas flow；
Fig. 3 is a kind of schematic diagram of the control device embodiment 1 of Breathing Suppotion equipment gas flow；
Fig. 4 is a kind of flow chart of the control method embodiment 2 of Breathing Suppotion equipment gas flow；
Fig. 5 is a kind of schematic diagram of the control device embodiment 2 of Breathing Suppotion equipment gas flow；
Fig. 6 is a kind of schematic diagram of the control method embodiment 3 of Breathing Suppotion equipment gas flow；
Fig. 7 is single feedback flow control system flow chart；
Fig. 8 is single feedback flow control controlling curve figure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
It should be appreciated that ought use in this specification and in the appended claims, term " includes " and "comprising" instruction
Described feature, entirety, step, operation, the presence of element and/or component, but one or more of the other feature, whole is not precluded
Body, step, operation, the presence or addition of element, component and/or its set.
It will be further appreciated that the term "and/or" used in description of the invention and the appended claims is
Refer to any combination and all possible combinations of one or more of associated item listed, and including these combinations.
Fig. 1, a kind of control system of Breathing Suppotion equipment gas flow are please referred to, system includes being used for detection gas flow
Flow sensor 14, pressure sensor 12, control device 13 and turbine 11 for detection gas pressure, flow sensor
14 and the flow that will test respectively of pressure sensor 12 and pressure data be transmitted to the control device 13 of connection, control device
13 can be terminal, or some processors, such as: single-chip microcontroller, control device 13 analyze flow and pressure data
The turbine 11 of connection is controlled；The velocity of rotation of turbine 11 is faster, and gas flow is bigger, and the velocity of rotation of turbine 11 is got over
Slowly, gas flow is smaller, and control device 13 controls turbine 11 and controls gas flow size.Wherein, turbine 11 is also distinguished
It is connected to flow sensor 14 and pressure sensor 12, flow sensor 14 and the detection of pressure sensor 12 are handled through turbine
Gas flow and pressure after variation, the i.e. real-time traffic of real-time detection gas.
Such as: when preset flow is F0, when flow is F0, maximum pressure value be can be set as Pm (F0), pressure
The pressure value and flow value of force snesor and flow sensor real-time detection Breathing Suppotion equipment, at a time, detection
When the flow arrived is F1, when pressure is P1, F1 and F0 generate difference, if F1 is less than F0, carry out increasing flow adjusting.
But only when pressure P1 be less than Pm when, just flow is adjusted immediately, when P1 be greater than Pm when, wait pressure P be reduced to Pm with
Under, turbine is controlled control device again, improves its revolving speed, increase adjusting is carried out to gas flow, until F1=F0.
Fig. 2, a kind of control method of Breathing Suppotion equipment gas flow are please referred to, method includes:
S21. the gas flow size of Breathing Suppotion equipment is obtained；Breathing Suppotion equipment at runtime, manages interior meeting therewith
The rotation of turbine generates gas flow, passes through the gas flow in detection pipe, it can obtains the gas stream of Breathing Suppotion equipment
Measure size.
S22. judge whether gas flow size is less than preset flow value；It, can be to exhaling before the operation of Breathing Suppotion equipment
Inhale holding equipment preset a flow value, that is, work normally when flow value, still, in some cases (such as: just starting when or
The other situations of person), practical flow value can and target value generate deviation, at this moment just need to Breathing Suppotion equipment carry out flow tune
Section, such as: the gas flow size detected is 50L/min, and preset is 80L/min, then may determine that gas flow
Size be less than preset flow value, when the gas flow size detected be 100L/min, and it is preset be 80L/min, then may be used
To judge that gas flow size is greater than preset flow value.
If S23. gas flow size is less than preset flow value, the gas pressure size of Breathing Suppotion equipment is obtained；When
When gas flow size is less than preset flow value, the gas pressure size of Breathing Suppotion equipment at this time is obtained；Such as: it detects
Gas flow size be 50L/min, and preset uninterrupted be 80L/min, detect gas pressure size at this time.
S24. judge whether gas pressure size is less than preset pressure value；Such as: preset uninterrupted is 80L/
Min sets corresponding pressure value as P (80L/min) at this time, and preset design of pressure is Pm (80L/min), Pm (80L/
Min) big than P (80L/min), but this it is big number can according to circumstances be set, when obtaining in Breathing Suppotion equipment
Pressure be P0, P0 be less than Pm when, then judge gas pressure size be less than preset pressure value, when P0 be greater than Pm when, then judge
Gas pressure size is greater than preset pressure value.
If S25. gas pressure size is less than preset pressure value, control secondary speed increases；When the P0 of detection is less than in advance
If Pm when, control secondary speed increase, increase flow input.
Please refer to Fig. 3, a kind of control device of Breathing Suppotion equipment gas flow, device include first acquisition unit 31,
First judging unit 32, second acquisition unit 33, second judgment unit 34 and first control unit 35, first acquisition unit
31, the first judging unit 32, second acquisition unit 33, second judgment unit 34 and first control unit 35 are sequentially connected,
In:
First acquisition unit 31, for obtaining the gas flow size of Breathing Suppotion equipment；Breathing Suppotion equipment is being run
When, manage in can therewith turbine rotation generate gas flow, pass through the gas flow in detection pipe, it can obtain breathing branch
The gas flow size of holding equipment.
First judging unit 32, for judging whether gas flow size is less than preset flow value；It is set in Breathing Suppotion
Before received shipment row, a flow value when flow value, i.e. normal work can be preset to Breathing Suppotion equipment, still, in some cases
(such as: just starting when or other situations), practical flow value can and target value generate deviation, at this moment just need to breathing
Holding equipment carries out flow adjusting, such as: the gas flow size detected is 50L/min, and preset is 80L/min, then may be used
To judge that gas flow size is less than preset flow value, when the gas flow size detected is 100L/min, and preset
It is 80L/min, then may determine that gas flow size is greater than preset flow value.
Second acquisition unit 33 obtains Breathing Suppotion equipment if being less than preset flow value for gas flow size
Gas pressure size；When gas flow size is less than preset flow value, the gas pressure of Breathing Suppotion equipment at this time is obtained
Size；Such as: the gas flow size detected is 50L/min, and preset uninterrupted is 80L/min, is detected at this time
Gas pressure size.
Second judgment unit 34, for judging whether gas pressure size is less than preset pressure value；Such as: preset stream
Amount size is 80L/min, sets corresponding pressure value at this time as P (80L/min), and preset design of pressure is Pm (80L/
Min), Pm (80L/min) is big than P (80L/min), but this it is big number can according to circumstances be set, when acquisition is exhaled
Inhaling the pressure in holding equipment is P0, when P0 is less than Pm, then judges that gas pressure size is less than preset pressure value, when P0 is greater than
When Pm, then judge that gas pressure size is greater than preset pressure value.
First control unit 35, if being less than preset pressure value for gas pressure size, control secondary speed increases；When
When the P0 of detection is less than preset Pm, control secondary speed is increased, and increases flow input.
Fig. 4, a kind of control method of Breathing Suppotion equipment gas flow are please referred to, method includes:
S41. the gas flow size of Breathing Suppotion equipment is obtained；Breathing Suppotion equipment at runtime, manages interior meeting therewith
The rotation of turbine generates gas flow, passes through the gas flow in detection pipe, it can obtains the gas stream of Breathing Suppotion equipment
Measure size.
S42. judge whether gas flow size is equal to preset flow value；It, can be to exhaling before the operation of Breathing Suppotion equipment
It inhales holding equipment and presets a flow value, that is, flow value when working normally, such as be set as F0, due to being transported in Breathing Suppotion equipment
It is possible to during row sometimes, gas flow size can be equal to preset flow value, that is, the uninterrupted F1 detected
F0 can be equal to, then may determine that uninterrupted is equal to preset flow value, work as F1=F0, then continue to obtain Breathing Suppotion equipment
Gas flow size, as F1 ≠ F0, i.e., gas flow differs in size in preset flow value.
S43. when gas flow differs in size in preset flow value, then it is preset to judge whether gas flow size is less than
Flow value；Before the operation of Breathing Suppotion equipment, a flow value, that is, flow when working normally can be preset to Breathing Suppotion equipment
Value, still, in some cases (such as: just starting when or other situations), practical flow value can with target value generate partially
At this moment difference just needs to carry out Breathing Suppotion equipment flow adjusting, such as: the gas flow size detected is 50L/min, and
Preset is 80L/min, then may determine that gas flow size is less than preset flow value, when the gas flow detected is big
Small is 100L/min, and preset is 80L/min, then may determine that gas flow size is greater than preset flow value.
If S44. gas flow size is less than preset flow value, the gas pressure size of Breathing Suppotion equipment is obtained；When
When gas flow size is less than preset flow value, the gas pressure size of Breathing Suppotion equipment at this time is obtained；Such as: it detects
Gas flow size be 50L/min, and preset uninterrupted be 80L/min, detect gas pressure size at this time.
S45. judge whether gas pressure size is less than preset pressure value；Such as: preset uninterrupted is 80L/
Min sets corresponding pressure value as P (80L/min) at this time, and preset design of pressure is Pm (80L/min), Pm (80L/
Min) big than P (80L/min), but this it is big number can according to circumstances be set, when obtaining in Breathing Suppotion equipment
Pressure be P0, P0 be less than Pm when, then judge gas pressure size be less than preset pressure value, when P0 be greater than Pm when, then judge
Gas pressure size is greater than preset pressure value, then continues the gas flow size for obtaining Breathing Suppotion equipment, not direct convection current
Amount is adjusted.
If S46. gas pressure size is less than preset pressure value, control secondary speed increases；When the P0 of detection is less than in advance
If Pm when, control secondary speed increase, increase flow input.
If S47. gas flow size is greater than preset flow value, the gas pressure size of Breathing Suppotion equipment is obtained；When
When gas flow size is greater than preset flow value, the gas pressure size of Breathing Suppotion equipment at this time is obtained；Such as: it detects
Gas flow size be 90L/min, and preset uninterrupted be 80L/min, obtain gas pressure size at this time.
S48. judge whether gas pressure size is greater than preset pressure value；Such as: preset uninterrupted is 80L/
Min sets corresponding pressure value as P (80L/min) at this time, and preset design of pressure is Pm (80L/min), Pm (80L/
Min) big than P (80L/min), but this it is big number can according to circumstances be set, when obtaining in Breathing Suppotion equipment
Pressure be P0, P0 be less than Pm when, then judge gas pressure size be less than preset pressure value, then continue obtain Breathing Suppotion set
Standby gas flow size, is not directly adjusted flow, when P0 is greater than Pm, then it is default to judge that gas pressure size is greater than
Pressure value.
If S49. gas pressure size is less than preset pressure value, control secondary speed increases；When the P0 of detection is less than in advance
If Pm when, control secondary speed increase, increase flow input.
Please refer to Fig. 5, a kind of control device of Breathing Suppotion equipment gas flow, device include first acquisition unit 51,
Third judging unit 52, the first judging unit 53, second acquisition unit 54, second judgment unit 55, first control unit 56,
Three acquiring units 57, the 4th judging unit 58 and the second control unit 59, third judging unit 52, the first judging unit 53,
Second acquisition unit 54, second judgment unit 55 and first control unit 56 are sequentially connected, and the first judging unit 53 is also connected with
In third acquiring unit 57, third acquiring unit 57, the 4th judging unit 58 and the second control unit 59 are sequentially connected, and first
Acquiring unit 51 is also attached to the 4th judging unit 58 and second judgment unit 55, in which:
First acquisition unit 51, for obtaining the gas flow size of Breathing Suppotion equipment；Breathing Suppotion equipment is being run
When, manage in can therewith turbine rotation generate gas flow, pass through the gas flow in detection pipe, it can obtain breathing branch
The gas flow size of holding equipment.
Third judging unit 52, for judging whether gas flow size is equal to preset flow value；It is set in Breathing Suppotion
Before received shipment row, a flow value, that is, flow value when working normally can be preset to Breathing Suppotion equipment, such as be set as F0, due to
It is possible in Breathing Suppotion equipment running process sometimes, gas flow size can be equal to preset flow value, i.e.,
The uninterrupted F1 of detection can be equal to F0, then may determine that uninterrupted is equal to preset flow value, work as F1=F0, then continue to obtain
The gas flow size for taking Breathing Suppotion equipment, as F1 ≠ F0, i.e., gas flow differs in size in preset flow value.
First judging unit 53 then judges that gas flow is big for differing in size when gas flow in preset flow value
It is small whether to be less than preset flow value；Before the operation of Breathing Suppotion equipment, a flow value can be preset to Breathing Suppotion equipment, i.e., just
Often work when flow value, still, in some cases (such as: just starting when or other situations), practical flow value meeting
And target value generates deviation, at this moment just needs to carry out Breathing Suppotion equipment flow adjusting, such as: the gas flow detected is big
Small is 50L/min, and preset is 80L/min, then may determine that gas flow size is less than preset flow value, works as detection
The gas flow size arrived is 100L/min, and preset is 80L/min, then it is default to may determine that gas flow size is greater than
Flow value.
Second acquisition unit 54 obtains Breathing Suppotion equipment if being less than preset flow value for gas flow size
Gas pressure size；When gas flow size is less than preset flow value, the gas pressure of Breathing Suppotion equipment at this time is obtained
Size；Such as: the gas flow size detected is 50L/min, and preset uninterrupted is 80L/min, is detected at this time
Gas pressure size.
Second judgment unit 55, for judging whether gas pressure size is less than preset pressure value；Such as: preset stream
Amount size is 80L/min, sets corresponding pressure value at this time as P (80L/min), and preset design of pressure is Pm (80L/
Min), Pm (80L/min) is big than P (80L/min), but this it is big number can according to circumstances be set, when acquisition is exhaled
Inhaling the pressure in holding equipment is P0, when P0 is less than Pm, then judges that gas pressure size is less than preset pressure value, when P0 is greater than
When Pm, then judge that gas pressure size is greater than preset pressure value, then continue the gas flow size for obtaining Breathing Suppotion equipment,
Directly flow is not adjusted.
First control unit 56, if being less than preset pressure value for gas pressure size, control secondary speed increases；When
When the P0 of detection is less than preset Pm, control secondary speed is increased, and increases flow input.
Third acquiring unit 57 obtains Breathing Suppotion equipment if being greater than preset flow value for gas flow size
Gas pressure size；When gas flow size is greater than preset flow value, the gas pressure of Breathing Suppotion equipment at this time is obtained
Size；Such as: the gas flow size detected is 90L/min, and preset uninterrupted is 80L/min, is obtained at this time
Gas pressure size.
4th judging unit 58, for judging whether gas pressure size is greater than preset pressure value；Such as: preset stream
Amount size is 80L/min, sets corresponding pressure value at this time as P (80L/min), and preset design of pressure is Pm (80L/
Min), Pm (80L/min) is big than P (80L/min), but this it is big number can according to circumstances be set, when acquisition is exhaled
Inhaling the pressure in holding equipment is P0, when P0 is less than Pm, then judges that gas pressure size is less than preset pressure value, then continues to obtain
The gas flow size for taking Breathing Suppotion equipment, is not directly adjusted flow, when P0 is greater than Pm, then judges gas pressure
Size is greater than preset pressure value.
Second control unit 59, if being less than preset pressure value for gas pressure size, control secondary speed increases；When
When the P0 of detection is less than preset Pm, control secondary speed is increased, and increases flow input.
Please refer to Fig. 6, a kind of control method of Breathing Suppotion equipment gas flow, the pressure of the flow and setting that first set
Corresponding relationship discretization can simply be divided into following section:
| Serial number | Flow rate zone | Compression force reference value |
| 1 | Less than 10L/min | Maximum value Pmax (10L/min) |
| 2 | Less than 25L/min | Maximum value Pmax (25L/min) |
| 3 | Less than 40L/min | Maximum value Pmax (40L/min) |
| 4 | Less than 70L/min | Maximum value Pmax (70L/min) |
| 5 | Less than maximum target flow | Maximum value Pmax (Fmax) |
If flow F1 is arranged in target, the real-time of empty oxygen gas mixture is measured by digital flow or other flow sensors
Flow F2 is inquired the flow rate zone where F1 by look-up table, obtains the Pressure maximum value PNmax in the N of the section；Pass through pressure
Sensor acquires real-time pressure P, if F2<F1 and P<PNmax or F2>F1 and P>P (N-1) max, breathing humidification instrument is logical
It crosses control device and sends order, increase secondary speed control amount DAC1 or reduce secondary speed DAC1.Equally until final F1=
F2 or F1 ≈ F2, wherein F2 can be indicated with the functional relation of DAC1:
F2=k × DAC1+ Δ F and (P<PNmax or P>P (N-1) max)
Wherein when selected section is that minimum discharge section is, it is 0cmH20 that P (N-1), which can then be defaulted as gauge pressure, specific
Control flow are as follows:
S61 obtains target flow F1；
S62 obtains corresponding P (N) max and P (N-1) max of target flow F1；
S63 obtains real-time DAC1；
S64 obtains real-time traffic F；
Real-time traffic F and target flow F1 are compared in S65, judgement；
S66 obtains real-time pressure P；
Real-time pressure P and P (N) max are compared in S67, judgement；
S68, when real-time traffic F be less than target flow F1, and real-time pressure P be less than P (N) max, then increase speed control
DAC1.When real-time traffic F is less than target flow F1, real-time pressure P is greater than P (N) max, then prompt messages, allow user to know
Road, vapour lock is excessive in current breathing circuit, and user is needed to check whether breathing circuit or procuratorial work breathing interface are suitable for currently flowing
Amount；And real-time pressure need to be dropped to P (N) max, flow F at this time is exported, while also generating a prompt information, certainly, prompted
Information may need flow to be less than target flow, and pressure reaches maximum value, and certain time can be 5s, 7s and 10s
Deng just generating this warning note.
S71 obtains target flow F1；
S72 obtains corresponding P (N) max and P (N-1) max of target flow F1；
S73 obtains real-time DAC1；
S74 obtains real-time traffic F；
Real-time traffic F and target flow F1 are compared in S75, judgement；
S76 obtains real-time pressure P；
Real-time pressure P and P (N) max are compared in S77, judgement；
S78, when real-time traffic F be greater than target flow F1, and real-time pressure P be greater than P (N) max, then reduce revolving speed control
DAC1.When real-time traffic F is greater than target flow F1, real-time pressure P is less than P (N) max, and revolving speed also reduces.
Wherein the left figure in Fig. 6 is that flow rises control, and right figure is flow decline control；During actual test, section
It is smaller, overshoot smaller in flow control process, in uphill process, minimum flow value in section overshoots maximum, maximum stream flow
Value overshoot is minimum, and during decline, the peak flow values in section overshoot maximum, and minimum flow value overshoot is minimum.The above table
Data test in lattice, discovery maximum overshoot are no more than 10L/min, and the most wide speed of adjustable range is between 5s to 7s.
Existing is single flow rate sensor flow control basic principle mostly: Fig. 7 is please referred to, after opening treatment, if
Flow F1 is arranged in target, and the real-time traffic F2 of empty oxygen gas mixture is measured by digital flow or other flow sensors, then when
When F2 < F1, breathing humidification instrument is sent by control device and is ordered, and increases secondary speed control amount DAC1, conversely, then reducing
Secondary speed DAC1.Until final F1=F2 or F1 ≈ F2, wherein F2 can be indicated with the functional relation of DAC1:
F2=k × DAC1+ Δ F
Wherein Δ F is flow overshoot, and k is proportionality coefficient: indicating that F2 increases as DAC1 increases, reduces and reduce.
Wherein under normal circumstances, in the case that Breathing Suppotion equipment is from 0 to 70L/min, single feedback flow control system is such as
Fruit is quickly adjusted, i.e., adjusts within 3 to 5 seconds and arrive target flow, and maximum flow is likely to be breached 100L/min at this time, overshoots Δ F
There are about 30L/min, and in the case where adjusting 10 to 15s at a slow speed, flow is also possible to the case where reaching maximum 80L/min.It please refers to
Fig. 8 is actual flow with regulating time, curve graph with target flow, and it is especially big just to start fluctuation, that is, is overcharged larger.
The embodiment of the present invention can be sequentially adjusted, merged and deleted according to actual needs.
This programme is described in detail in embodiment, and specific case used herein is to structural principle of the invention
And embodiment is expounded, above embodiments are merely used to help understand method and its core concept of the invention；Meanwhile
For those of ordinary skill in the art, according to the thought of the present invention, has change in specific embodiments and applications
Become place, in conclusion the contents of this specification are not to be construed as limiting the invention.
Claims (10)
1. a kind of control method of Breathing Suppotion equipment gas flow, which is characterized in that method includes:
S1. the gas flow size of Breathing Suppotion equipment is obtained；
S2. judge whether gas flow size is less than preset flow value；
If S3. gas flow size is less than preset flow value, the gas pressure size of Breathing Suppotion equipment is obtained；
S4. judge whether gas pressure size is less than preset pressure value；
If S5. gas pressure size is less than preset pressure value, control secondary speed increases.
2. control method according to claim 1, which is characterized in that further include judging gas flow between the S1 and S2
Whether size is equal to preset flow value, if gas flow differs in size in preset flow value, carries out gas flow size
Whether the judgement of preset flow value is less than.
3. control method according to claim 2, which is characterized in that preset if the S2 judges that gas flow size is greater than
Flow value, then further include:
Obtain the gas pressure size of Breathing Suppotion equipment；
Judge whether gas pressure size is greater than preset pressure value；
If gas pressure size is greater than preset pressure value, control secondary speed reduces.
4. control method according to claim 3, which is characterized in that if gas pressure size is not more than preset pressure
Value then continues the gas flow size for obtaining Breathing Suppotion equipment.
5. a kind of control device of Breathing Suppotion equipment gas flow, which is characterized in that device includes first acquisition unit, first
Judging unit, second acquisition unit, second judgment unit and first control unit, the first acquisition unit, the first judgement
Unit, second acquisition unit, second judgment unit and first control unit are sequentially connected, in which:
First acquisition unit, for obtaining the gas flow size of Breathing Suppotion equipment；
First judging unit, for judging whether gas flow size is less than preset flow value；
Second acquisition unit obtains the gas pressure of Breathing Suppotion equipment if being less than preset flow value for gas flow size
Power size；
Second judgment unit, for judging whether gas pressure size is less than preset pressure value；
First control unit, if being less than preset pressure value for gas pressure size, control secondary speed increases.
6. control device according to claim 5, which is characterized in that it further include third judging unit, the third judgement
Unit is connected to first acquisition unit and the first judging unit, and the third judging unit is for judging that gas flow is big
It is small whether to be equal to preset flow value.
7. control device according to claim 6, which is characterized in that first judging unit judges gas flow size
It further include third acquiring unit, the 4th judging unit and the second control unit when greater than preset flow value, in which:
Third acquiring unit, for obtaining the gas pressure size of Breathing Suppotion equipment；
4th judging unit, for judging whether gas pressure size is greater than preset pressure value；
Second control unit, if be greater than preset pressure value for gas pressure size, control secondary speed reduces.
8. control device according to claim 7, which is characterized in that the 4th judging unit is also attached to the first acquisition
Unit, when the 4th judging unit judges gas pressure size no more than preset pressure value, first acquisition unit after
The continuous gas flow size for obtaining Breathing Suppotion equipment.
9. a kind of control system of Breathing Suppotion equipment gas flow, which is characterized in that system includes any institute of claim 5-8
Control device, the flow sensor, the pressure sensor for detection gas pressure and whirlpool for detection gas flow stated
Wheel, the flow and pressure data that the flow sensor and pressure sensor will test respectively are transmitted to the control dress of connection
It sets, the control device controls the turbine of connection flow and pressure data analysis.
10. control system according to claim 9, which is characterized in that the turbine is also respectively connected in flow sensor
And pressure sensor, the flow sensor and pressure sensor gas flow of the detection after turbine processing variation and
Pressure.
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| CN201811636259.XA CN109771765A (en) | 2018-12-29 | 2018-12-29 | A kind of control method and device and system of Breathing Suppotion equipment gas flow |
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| CN201811636259.XA CN109771765A (en) | 2018-12-29 | 2018-12-29 | A kind of control method and device and system of Breathing Suppotion equipment gas flow |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111110979A (en) * | 2019-12-31 | 2020-05-08 | 湖南明康中锦医疗科技发展有限公司 | Self-checking system and method for water tank of respiratory support equipment |
| CN111529980A (en) * | 2020-04-28 | 2020-08-14 | 上海医盾医疗科技有限公司 | Control system of disposable air filtering respirator |
| WO2021147225A1 (en) * | 2020-01-20 | 2021-07-29 | 深圳市科曼医疗设备有限公司 | Mixing cavity pressure control method, breathing machine device, and computer readable storage medium |
| CN113413529A (en) * | 2021-06-20 | 2021-09-21 | 三河科达实业有限公司 | Portable universal mechanical ventilation module for life support system adapted to field environment |
| CN114082058A (en) * | 2021-12-21 | 2022-02-25 | 河北谊安奥美医疗设备有限公司 | Functional safety control device and control method for breathing machine |
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2018
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111110979A (en) * | 2019-12-31 | 2020-05-08 | 湖南明康中锦医疗科技发展有限公司 | Self-checking system and method for water tank of respiratory support equipment |
| WO2021147225A1 (en) * | 2020-01-20 | 2021-07-29 | 深圳市科曼医疗设备有限公司 | Mixing cavity pressure control method, breathing machine device, and computer readable storage medium |
| CN111529980A (en) * | 2020-04-28 | 2020-08-14 | 上海医盾医疗科技有限公司 | Control system of disposable air filtering respirator |
| CN113413529A (en) * | 2021-06-20 | 2021-09-21 | 三河科达实业有限公司 | Portable universal mechanical ventilation module for life support system adapted to field environment |
| CN114082058A (en) * | 2021-12-21 | 2022-02-25 | 河北谊安奥美医疗设备有限公司 | Functional safety control device and control method for breathing machine |
| CN114082058B (en) * | 2021-12-21 | 2023-11-10 | 河北谊安奥美医疗设备有限公司 | Functional safety control device and control method for breathing machine |
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Application publication date: 20190521 |