CN203263988U - Micro-valve pressure control device of bi-level breathing machine - Google Patents
Micro-valve pressure control device of bi-level breathing machine Download PDFInfo
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- CN203263988U CN203263988U CN 201320263760 CN201320263760U CN203263988U CN 203263988 U CN203263988 U CN 203263988U CN 201320263760 CN201320263760 CN 201320263760 CN 201320263760 U CN201320263760 U CN 201320263760U CN 203263988 U CN203263988 U CN 203263988U
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Abstract
The utility model discloses a micro-valve pressure control device of a bi-level breathing machine. The micro-valve pressure control device of the bi-level breathing machine is connected with a pipeline, and comprises a control module, a signal acquisition circuit and a signal control circuit, wherein the signal acquisition circuit and the signal control circuit are connected with the control module. The signal acquisition circuit comprises a pressure sensor installed on the pipeline, an amplification circuit connected with the pressure sensor, and an ADC switching circuit connected with the amplification circuit and the control module. The signal control circuit comprises a valve installed on the pipeline, a DAC switching circuit, a comparator circuit, a PID circuit, a signal amplification circuit and a power amplifier circuit, wherein the DAC switching circuit, the comparator circuit, the PID circuit, the signal amplification circuit and the power amplifier circuit are sequentially connected, the DAC switching circuit is connected with the control module, and the power amplifier circuit is connected with the valve. The micro-valve pressure control device of the bi-level breathing machine has the advantages of being simple in circuit, low in cost and high in control accuracy, and can adapt to the comfort level required by the human body and guarantee that the tidal volume can meet the required standard, and the response speed of the valve can be adjusted.
Description
Technical field
This utility model relates to the armarium technical field, in particular, and the particularly micro valve pressure control device of a kind of pair of level respirator.
Background technology
The pressure of respirator variation now is main adopts following two kinds of modes to realize: one, adopt the turbofan speed governing to realize that pressure changes, the method advantage is needing only the rotating speed of controlling turbofan, with regard to the energy controlled pressure, the pressure range that can control is larger, shortcoming is that the pressure size of turbofan is directly proportional to flow, the very possible inadequate situation of output tidal volume that occurs under some breathing states.Two, adopt current drives chip drives valve, again through high-precision A/D sampling feedback Current Control valve event, the method can be accomplished the high accuracy by-pass valve control, but the action of this large current valves is very fast, the synchronicity of software requirement and hardware is very high, and the high-precision current drive circuit and the high-precision A/D sampling cost all very high.
The utility model content
The purpose of this utility model is to exist for prior art the technical problem of circuit complexity, high in cost of production, and the micro valve pressure control device of a kind of pair of level respirator is provided.
In order to solve problem set forth above, the technical solution adopted in the utility model is: the micro valve pressure control device of a kind of pair of level respirator, it is connected with pipeline, comprise control module and the signal acquisition circuit that is connected with control module and signal control circuit, described signal acquisition circuit comprises the pressure transducer that is installed on pipeline, the amplifying circuit that is connected with pressure transducer is with the ADC change-over circuit that is connected amplifying circuit and control module; Described signal control circuit comprises the valve that is installed on pipeline, and the DAC change-over circuit, comparison circuit, PID circuit, signal amplification circuit and the power amplifier that connect successively, and described DAC change-over circuit is connected with control module, and described power amplifier is connected with valve.
According to a preferred embodiment of the present utility model: described signal amplification circuit also is connected with control module, and comparison circuit also is connected with the ADC change-over circuit.
Compared with prior art, the beneficial effects of the utility model are: have that circuit is simple, cost is low, and the high advantage of the control accuracy of this control device, and valve response speed is adjustable, the comfort level that can adapt to the human body requirement, and can guarantee that tidal volume reaches the requirement standard.
Description of drawings
Fig. 1. be the frame diagram of the micro valve pressure control device of of the present utility model pair of level respirator.
Description of reference numerals: 1, control module, 2, the ADC change-over circuit, 3, amplifying circuit, 4, pressure transducer, 5, pipeline, 6, valve, 7, the DAC change-over circuit, 8, comparison circuit, 9, the PID circuit, 10, signal amplification circuit, 11, power amplifier.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, this utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Consult shown in Figure 1, this utility model provides the micro valve pressure control device of a kind of pair of level respirator, it is connected with pipeline 5, comprise control module 1 and the signal acquisition circuit and the signal control circuit that are connected with control module 1, and signal acquisition circuit comprises the pressure transducer 4 that is installed on pipeline 5, the amplifying circuit 3 that is connected with pressure transducer 4 is with the ADC change-over circuit 2 that is connected amplifying circuit 3 and control module 1; Signal control circuit comprises the valve 6 that is installed on pipeline 5, and the DAC change-over circuit 7, comparison circuit 8, PID circuit 9, signal amplification circuit 10 and the power amplifier 11 that connect successively, and DAC change-over circuit 7 is connected with control module 1, and power amplifier 11 is connected with valve 6.Simultaneously, signal amplification circuit 10 also is connected with control module 1, and comparison circuit 8 also is connected with ADC change-over circuit 2.And each above-mentioned circuit can adopt existing preferred circuit, and without specialized designs, and then guaranteed the simple of circuit, select simultaneously control module 1 to be general CPU control chip.
The below more by reference to the accompanying drawings the operation principle of 1 pair of pressure control device of the present utility model be described further:
As shown in Figure 1, air-flow flows in pipeline 5, controls its pressure through valve 6, breathes for user; Pressure transducer 4 at the gas circuit end of pipeline 5 gathers the pressure that respirators provide.And the data that pressure transducer 4 gathers enter respectively ADC change-over circuit 2 and comparison circuit 8 after amplifying circuit 3 amplifies, and control module 1(is CPU) numerical value that reads ADC change-over circuit 2 obtains pressure data.At this moment, control module 1 is controlled DAC change-over circuit 7 according to the user respiratory characteristic in the data base, and output needs to control the pressure data that reaches.And the relatively more existing force value of comparison circuit 8 and control module 1 output pressure value, pressure difference data between output, then this pressure difference data is improved valve 6 response controls by PID circuit 9, the output control waveform, and control waveform carries out signal by signal amplification circuit 10 and amplifies, and is carried on the standard audio square-wave pulse of 500Hz; At last, carrier pulse is controlled power amplifier 11, finally exports controlling value, and by-pass valve control 6 is in the operating point work of control module 1 expectation.
Above-described embodiment is the better embodiment of this utility model; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present utility model and principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, within being included in protection domain of the present utility model.
Claims (2)
1. the micro valve pressure control device of two level respirators, it is connected with pipeline (5), comprise control module (1) and the signal acquisition circuit and the signal control circuit that are connected with control module (1), it is characterized in that: described signal acquisition circuit comprises the pressure transducer (4) that is installed on pipeline (5), the amplifying circuit (3) that is connected with pressure transducer (4) is with the ADC change-over circuit (2) that is connected amplifying circuit (3) and control module (1); Described signal control circuit comprises the valve (6) that is installed on pipeline (5), and the DAC change-over circuit (7), comparison circuit (8), PID circuit (9), signal amplification circuit (10) and the power amplifier (11) that connect successively, and described DAC change-over circuit (7) is connected with control module (1), and described power amplifier (11) is connected with valve (6).
2. the micro valve pressure control device of according to claim 1 pair of level respirator, it is characterized in that: described signal amplification circuit (10) also is connected with control module (1), and comparison circuit (8) also is connected with ADC change-over circuit (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320263760 CN203263988U (en) | 2013-05-15 | 2013-05-15 | Micro-valve pressure control device of bi-level breathing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320263760 CN203263988U (en) | 2013-05-15 | 2013-05-15 | Micro-valve pressure control device of bi-level breathing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203263988U true CN203263988U (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320263760 Expired - Lifetime CN203263988U (en) | 2013-05-15 | 2013-05-15 | Micro-valve pressure control device of bi-level breathing machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN203263988U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109939315A (en) * | 2017-12-20 | 2019-06-28 | 北京谊安医疗系统股份有限公司 | A kind of automatic height above sea level compensation method of ventilator turbine pressure control |
-
2013
- 2013-05-15 CN CN 201320263760 patent/CN203263988U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109939315A (en) * | 2017-12-20 | 2019-06-28 | 北京谊安医疗系统股份有限公司 | A kind of automatic height above sea level compensation method of ventilator turbine pressure control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 410205 Room 101, 1st floor, north of superstar entrepreneurship base, No. 8 Lujing Road, high tech Development Zone, Changsha, Hunan Patentee after: Hunan Mingkang Zhongjin Medical Technology Co.,Ltd. Address before: 410000 No. 326, Chuangye building, Hunan University Science Park, 186 Guyuan Road, Yuelu District, Changsha City, Hunan Province Patentee before: HUNAN MICOME ZHONGJIN MEDICAL SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |
|
| CX01 | Expiry of patent term |