CN110686824A - Method for testing pipe network resistance of exhaust device for intelligent mask - Google Patents
Method for testing pipe network resistance of exhaust device for intelligent mask Download PDFInfo
- Publication number
- CN110686824A CN110686824A CN201810721787.9A CN201810721787A CN110686824A CN 110686824 A CN110686824 A CN 110686824A CN 201810721787 A CN201810721787 A CN 201810721787A CN 110686824 A CN110686824 A CN 110686824A
- Authority
- CN
- China
- Prior art keywords
- exhaust device
- pipe network
- curve
- network resistance
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention relates to the field of personal protection device control methods, and provides a method for testing pipe network resistance of an exhaust device for an intelligent mask, which comprises the following steps: s1, when the intelligent mask is used, measuring the current and the rotating speed of the exhaust device in different motion modes; s2, adjusting the rotating speed of the independent air exhaust device, and obtaining a pressure-flow curve and a current-flow curve of the air exhaust device at different rotating speeds by changing the load through the pneumatic performance detection device; and S3, combining the pressure-flow curve and the current-flow curve, and drawing a pipe network resistance curve of the intelligent mask exhaust device by a multipoint fitting method. After the pipe network resistance curve is obtained by the method, the working flow and pressure of the exhaust device in any breathing state can be determined, so that technical parameters are provided for the type selection of the exhaust device in different working modes or a design target is provided for the pneumatic design of the exhaust device.
Description
Technical Field
The invention relates to the field of personal protection device control methods, in particular to a method for testing pipe network resistance of an exhaust device for an intelligent mask.
Background
Along with the worsening of haze and pollution in the air, the intelligent mask is favored by more and more consumers. The model selection of intelligent face guard in the existing market all adopts the mode of human impression, feels whether breathe smoothly under the motion pattern of difference through the people promptly and weighs exhaust air volume whether satisfy human demand of exhaust device, and this kind of sensation often the result is different because of the human difference to cause puzzlement to exhaust device's model selection and design optimization.
Therefore, a new method for testing the pipe network resistance of the exhaust device for the intelligent mask is needed, and the working pressure of the exhaust device in any breathing state can be determined on the premise of obtaining a pipe network resistance curve and a required working flow, so that technical parameters are provided for model selection of the exhaust device in different working modes or a design target is provided for pneumatic design of the exhaust device. .
Disclosure of Invention
The invention aims to provide a pipe network resistance testing method of an exhaust device for an intelligent mask, and aims to solve the problem that the type selection of the exhaust device is difficult for different mask wearers or different purposes in the prior art.
The invention provides a pipe network resistance testing method of an exhaust device for an intelligent mask, which comprises the following steps:
s1, when the intelligent mask is used, measuring the current and the rotating speed of the exhaust device in different motion modes;
s2, adjusting the rotating speed of the independent air exhaust device, and obtaining a pressure-flow curve and a current-flow curve of the air exhaust device at different rotating speeds by changing the load through the pneumatic performance detection device;
and S3, combining the pressure-flow curve and the current-flow curve, and drawing a pipe network resistance curve of the intelligent mask exhaust device by a multipoint fitting method.
Further, the S1 includes the following steps:
s11, measuring the rotating speed (N1, N2, N3 … Nn) and the corresponding current (A1, A2, A3 … An) of the air exhaust device of the user in N movement modes through the current tester and the rotating speed tester.
Further, the rotation speeds (N1, N2, N3 … Nn) and the corresponding currents (a 1, a2, A3 … An) are average values of 15 expiratory samples kept within 2min in the exercise mode.
Further, the S2 includes the following steps:
s21, adjusting the rotating speeds N1, N2 and N3 … Nn of the independent air exhaust device by adjusting the voltage boosting and reducing circuit to change the frequency of the motor;
and S22, testing the changes of pressure P, current A and flow Q of the exhaust device at fixed rotation speeds N1, N2 and N3 … Nn by using a pneumatic performance detection device, and drawing a P-Q curve and an A-Q curve at N rotation speeds by taking Q as an abscissa and P, A as an ordinate.
Further, the S3 includes the following steps:
s31, corresponding flow rates when currents in the A-Q curves are A1, A2 and A3 … An are Q1, Q2 and Q3 … Qn, so that fitting points B1 (Q1, P1), B2 (Q2, P2) and B3 (Q3, P3) … Bn (Qn, Pn) in the P-Q curves are obtained;
and S32, connecting B1, B2 and B3 … … Bn to obtain a pipe network resistance curve.
Further, n is more than or equal to 3.
Further, the pneumatic performance detection device is a wind tunnel tester.
Further, the movement patterns include, but are not limited to, sitting still, jogging, and running.
According to the method for testing the pipe network resistance of the exhaust device for the intelligent mask, the pipe network resistance curve of the exhaust device for the intelligent mask is drawn through a multipoint fitting method, and the working pressure of the exhaust device in any breathing state can be determined on the premise that the pipe network resistance curve and the required working flow are obtained, so that technical parameters are provided for model selection of the exhaust device in different working modes or a design target is provided for pneumatic design of the exhaust device.
Drawings
Fig. 1 shows the specific steps of the pipe network resistance test of the exhaust device for the intelligent mask according to the first embodiment of the present invention.
FIG. 2 is a P (Pa) -Q curve and an A (mA) -Q curve of the exhaust device for the intelligent mask at a rotating speed N1 according to the first embodiment of the invention.
FIG. 3 shows the P (Pa) -Q curve and the A (mA) -Q curve of the exhaust device for the intelligent mask at the rotating speed N2 according to the first embodiment of the present invention.
FIG. 4 is a P (Pa) -Q curve and an A (mA) -Q curve of the exhaust device for the intelligent mask at the rotating speed N3 according to the first embodiment of the invention.
Fig. 5 is a graph of the curve fit of the pipe network resistance in the first embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
In this specification, the term "ductwork" refers to the system in which the ventilator works, including the sum of ventilation ducts and their accessories, such as filters, heat exchangers, regulators, regulating valves, etc.; "pipe network resistance" refers to the general term of resistance of the ventilation duct and its accessories, such as filter, heat exchanger, regulator, regulating valve, etc.; each pipe network has its own characteristic curve, namely the "pipe network resistance curve".
The invention provides a method for testing the pipe network resistance of an exhaust device for an intelligent mask, which comprises the following steps:
s1, when the intelligent mask is used, measuring the current and the rotating speed of the exhaust device in different motion modes;
s2, adjusting the rotating speed of the independent air exhaust device, and obtaining a pressure-flow curve and a current-flow curve of the air exhaust device at different rotating speeds by changing the load through the pneumatic performance detection device;
and S3, combining the pressure-flow curve and the current-flow curve, and drawing a pipe network resistance curve of the intelligent mask exhaust device by a multipoint fitting method.
In this embodiment, a pipe network resistance curve of the exhaust device for the intelligent mask is drawn by a multipoint fitting method, and the working pressure of the exhaust device in any breathing state can be determined on the premise that the pipe network resistance curve and the required working flow are obtained, so that technical parameters are provided for model selection of the exhaust device in different working modes or a design target is provided for pneumatic design of the exhaust device.
In the embodiment, the respiratory volumes of people of all ages in different motion modes are known (see the following table: the short-term respiratory volume reference table of residents in China), so that the working flow data of the exhaust device can be obtained.
Fig. 1 shows the specific steps of the ventilation device pipe network resistance test for the smart mask.
Firstly, under a rated voltage, a current tester and a rotation speed tester measure that the current of an exhaust device of a user in a first motion mode is A1, the rotation speed is N1, then the exhaust device is taken down, the rotation speed of the exhaust device is adjusted to N1 in a mode of changing the frequency of a motor by adjusting a voltage increasing and decreasing circuit, a wind tunnel tester is used for obtaining the changes of the pressure P, the flow Q, the current A and the flow Q of the exhaust device under the rotation speed N1 in a mode of changing a load, and a P (Pa) -Q curve and an A (mA) -Q curve (shown in figure 2) under the rotation speed N1 are drawn by taking Q as an abscissa and P, A as an ordinate. When the current is A1, the flow rate of the exhaust device is Q1, the corresponding pressure is P1, and the position on the P (Pa) -Q curve is a fitting point B1.
The rated voltage is unchanged, the current of the air exhaust device of the user in the second motion mode is A2 and the rotating speed is N2 measured by the current tester and the rotating speed tester, then the air exhaust device is taken down, the rotating speed of the air exhaust device is adjusted to N2 by adjusting the frequency of the motor by adjusting the voltage increasing and decreasing circuit, the changes of the pressure P, the flow Q, the current A and the flow Q of the air exhaust device at the rotating speed of N2 are obtained by the wind tunnel tester by changing the load, and the P (Pa) -Q curve and the A (mA) -Q curve (as shown in figure 3) at the rotating speed of N2 are drawn by taking Q as the abscissa and P, A as the ordinate. When the current is A2, the flow rate of the exhaust device is Q2, the corresponding pressure is P2, and the position on the P (Pa) -Q curve is a fitting point B2.
The rated voltage is unchanged, the current of the air exhaust device of the user in the third motion mode is A3 and the rotating speed is N3 as measured by the current tester and the rotating speed tester, then the air exhaust device is taken down, the rotating speed of the air exhaust device is adjusted to N3 in a mode of changing the frequency of the motor by adjusting the voltage increasing and decreasing circuit, the changes of the pressure P, the flow Q, the current A and the flow Q of the air exhaust device at the rotating speed of N3 are obtained by the wind tunnel tester in a mode of changing the load, and the P (Pa) -Q curve and the A (mA) -Q curve (as shown in figure 4) at the rotating speed of N3 are drawn by taking Q as the abscissa and P, A as the ordinate. When the current is A3, the flow rate of the exhaust device is Q3, the corresponding pressure is P3, and the position on the P (Pa) -Q curve is a fitting point B3.
Finally, connecting B1, B2 and B3 to obtain a parabolic curve (as shown in FIG. 5), which is the resistance curve of the pipe network.
It should be noted that the measured current a1 and the rotational speed N1 in the first exercise mode, the measured current a2 and the rotational speed N2 in the second exercise mode, and the measured current A3 and the rotational speed N3 in the third exercise mode are all average values of 15 expiratory samples taken by the mask user during 2min of keeping the exercise mode.
The first movement mode, the second movement mode and the third movement mode can be sitting still, walking slowly, running fast, mountain climbing, riding and the like, and in order to enable a finally obtained pipe network resistance curve to be more accurate, the rotating speeds of the exhaust devices in the three movement modes have larger difference.
In order to completely draw a pipe network resistance curve, at least more than three motion modes are required to be selected, and one rotating speed and current are measured in each motion mode. Theoretically, the more motion modes are selected, the more fitting points are obtained, and the more accurate the drawn pipe network resistance curve is. In this embodiment, in order to simplify the steps, three motion modes are selected, that is, a pipe network resistance curve is obtained by a three-point fitting method.
After a pipe network resistance curve is obtained, the working pressure and flow data of the air exhausting device under a fixed motion mode (slow walking, fast running and the like) of a mask wearer can be obtained, the mask with the air exhausting device is designed by taking the working pressure and the flow data as parameters, meanwhile, a plurality of gears are arranged on the air exhausting device, each gear corresponds to one motion mode, when the wearer is in a certain motion mode, the air exhausting device is adjusted to the corresponding gear, the mask wearer can obtain better breathing experience, and the mask wearing device is convenient and saves resources.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A method for testing the pipe network resistance of an exhaust device for an intelligent mask is characterized by comprising the following steps:
s1, when the intelligent mask is used, measuring the current and the rotating speed of the exhaust device in different motion modes;
s2, adjusting the rotating speed of the independent air exhaust device, and obtaining a pressure-flow curve and a current-flow curve of the air exhaust device at different rotating speeds by changing the load through the pneumatic performance detection device;
and S3, combining the pressure-flow curve and the current-flow curve, and drawing a pipe network resistance curve of the intelligent mask exhaust device by a multipoint fitting method.
2. The method for testing the pipe network resistance of the exhaust device for the smart mask as set forth in claim 1, wherein the S1 comprises the steps of:
s11, measuring the rotating speed (N1, N2, N3 … Nn) and the corresponding current (A1, A2, A3 … An) of the air exhaust device of the user in N movement modes through the current tester and the rotating speed tester.
3. The method for testing the pipe network resistance of the exhaust device for the intelligent mask, according to claim 2, wherein the rotation speed (N1, N2, N3 … Nn) and the corresponding current (A1, A2, A3 … An) are average values of 15 expiratory samples kept within 2min in the movement mode.
4. The method for testing the pipe network resistance of the exhaust device for the smart mask as set forth in claim 1, wherein the S2 comprises the steps of:
s21, adjusting the rotating speeds N1, N2 and N3 … Nn of the independent air exhaust device by adjusting the voltage boosting and reducing circuit to change the frequency of the motor;
and S22, testing the changes of pressure P, current A and flow Q of the exhaust device at fixed rotation speeds N1, N2 and N3 … Nn by using a pneumatic performance detection device, and drawing a P-Q curve and an A-Q curve at N rotation speeds by taking Q as an abscissa and P, A as an ordinate.
5. The method for testing the pipe network resistance of the exhaust device for the smart mask as set forth in claim 1, wherein the S3 comprises the steps of:
s31, corresponding flow rates when currents in the A-Q curves are A1, A2 and A3 … An are Q1, Q2 and Q3 … Qn, so that fitting points B1 (Q1, P1), B2 (Q2, P2) and B3 (Q3, P3) … Bn (Qn, Pn) in the P-Q curves are obtained;
and S32, connecting B1, B2 and B3 … … Bn to obtain a pipe network resistance curve.
6. The method for testing the pipe network resistance of the exhaust device for the intelligent mask as claimed in claim 2, wherein n is greater than or equal to 3.
7. The method of testing the duct network resistance of an exhaust device for a smart mask according to claim 1, wherein the movement patterns include, but are not limited to, sitting still, walking, jogging, running.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810721787.9A CN110686824B (en) | 2018-07-04 | 2018-07-04 | Method for testing pipe network resistance of exhaust device for intelligent mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810721787.9A CN110686824B (en) | 2018-07-04 | 2018-07-04 | Method for testing pipe network resistance of exhaust device for intelligent mask |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110686824A true CN110686824A (en) | 2020-01-14 |
| CN110686824B CN110686824B (en) | 2021-05-28 |
Family
ID=69106394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810721787.9A Active CN110686824B (en) | 2018-07-04 | 2018-07-04 | Method for testing pipe network resistance of exhaust device for intelligent mask |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110686824B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09126105A (en) * | 1995-11-08 | 1997-05-13 | Sanshin Ind Co Ltd | Operation control device for engine |
| CN101596342A (en) * | 2009-04-30 | 2009-12-09 | 薛亚明 | A kind of warning device of intelligent oxygen respirator |
| CN103983313A (en) * | 2014-05-30 | 2014-08-13 | 重庆长厦安基建筑设计有限公司 | Method for determining resistance coefficient of pipe network and method for measuring air volume of pipe network |
| CN104750129A (en) * | 2013-12-26 | 2015-07-01 | 北京谊安医疗***股份有限公司 | Air flow rate control system and method of respirator |
| CN104841055A (en) * | 2015-04-21 | 2015-08-19 | 深圳市科曼医疗设备有限公司 | Control method, device and system for breathing machine PEEP valve |
| CN204677482U (en) * | 2015-05-13 | 2015-09-30 | 峰岹科技（深圳）有限公司 | A kind of brshless DC motor permanent wind amount control system |
| CN107741392A (en) * | 2017-09-27 | 2018-02-27 | 浙江省纺织测试研究院 | A kind of mouth mask protection effect method for real-timely testing synchronous with load respiratory resistance |
| CN108211075A (en) * | 2017-12-15 | 2018-06-29 | 湖南明康中锦医疗科技发展有限公司 | The method for stabilizing voltage of lung ventilator wind turbine |
-
2018
- 2018-07-04 CN CN201810721787.9A patent/CN110686824B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09126105A (en) * | 1995-11-08 | 1997-05-13 | Sanshin Ind Co Ltd | Operation control device for engine |
| CN101596342A (en) * | 2009-04-30 | 2009-12-09 | 薛亚明 | A kind of warning device of intelligent oxygen respirator |
| CN104750129A (en) * | 2013-12-26 | 2015-07-01 | 北京谊安医疗***股份有限公司 | Air flow rate control system and method of respirator |
| CN103983313A (en) * | 2014-05-30 | 2014-08-13 | 重庆长厦安基建筑设计有限公司 | Method for determining resistance coefficient of pipe network and method for measuring air volume of pipe network |
| CN104841055A (en) * | 2015-04-21 | 2015-08-19 | 深圳市科曼医疗设备有限公司 | Control method, device and system for breathing machine PEEP valve |
| CN204677482U (en) * | 2015-05-13 | 2015-09-30 | 峰岹科技（深圳）有限公司 | A kind of brshless DC motor permanent wind amount control system |
| CN107741392A (en) * | 2017-09-27 | 2018-02-27 | 浙江省纺织测试研究院 | A kind of mouth mask protection effect method for real-timely testing synchronous with load respiratory resistance |
| CN108211075A (en) * | 2017-12-15 | 2018-06-29 | 湖南明康中锦医疗科技发展有限公司 | The method for stabilizing voltage of lung ventilator wind turbine |
Non-Patent Citations (1)
| Title |
|---|
| 马硕远: "口罩综合性能测试装置研制", 《科技风》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110686824B (en) | 2021-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106979588B (en) | A kind of energy-saving management system and administration of energy conservation method of air conditioner in machine room energy consumption | |
| CN104764166B (en) | A kind of method and its device for being used to emulate all-air air conditioning system | |
| CN205278420U (en) | Air quantity regulator | |
| CN106156436A (en) | A kind of compressor modeling method of blade angle-adjustable classification regulation and control | |
| CN109442693A (en) | A kind of method, apparatus and air-conditioning of air-blower control | |
| CN104110788A (en) | Method and device for controlling air conditioner | |
| CN111046536B (en) | Thermal comfort modeling method based on changed adaptability factors and predicted average voting values | |
| CN106765986B (en) | Air conditioner and air outlet control method thereof | |
| CN109059217A (en) | A kind of air quantity-changeable air conditioning system employing total air quantity calculation control method based on operation curve | |
| CN102889674B (en) | Variable air volume air-conditioning tail end device and air volume control method thereof | |
| CN109579236A (en) | Control method, air conditioner and the computer readable storage medium of air conditioner | |
| CN109489215B (en) | Wind speed self-adaptive control method, control device and combined air conditioning unit | |
| CN110940034A (en) | Split air conditioner self-adaptive control system and method based on human body perception | |
| CN110180066A (en) | A kind of method and its system that Breathing Suppotion equipment humidifying is adjusted | |
| CN110686824B (en) | Method for testing pipe network resistance of exhaust device for intelligent mask | |
| CN104764141A (en) | Air conditioner temperature control method and air conditioner | |
| CN108413563A (en) | Indoor unit anti-freeze control method for air conditioner | |
| CN206097690U (en) | Novel thermal manikin system | |
| CN205759169U (en) | A kind of portable intelligent air purifier of band Respiration assistance | |
| CN202066163U (en) | Single-air-duct variable air volume tail end control device | |
| CN202254089U (en) | Natural ventilation air inlet and air exhaust device with functions of air guide and heat recovery | |
| WO2021159654A1 (en) | Air conditioning fan, control method therefor, and control device | |
| CN105042778A (en) | Calculation method and system for PTC heating power and air conditioner | |
| CN109556257B (en) | Air conditioner and dehumidification control method thereof | |
| CN107084471A (en) | The control method of air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 518116 Room 909, Local Tax Building 147 East Longitudinal Road, Pingshan District, Shenzhen City, Guangdong Province Applicant after: Shenzhen meimeimeichuangyi Medical Technology Co., Ltd Address before: 518116 Room 909, Local Tax Building 147 East Longitudinal Road, Pingshan District, Shenzhen City, Guangdong Province Applicant before: MEHOW INNOVATIVE Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |