CN117547698A - Fan control method, device, equipment, storage medium and program product - Google Patents
Fan control method, device, equipment, storage medium and program product Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes operated by electrical means
- A61M16/022—Control means therefor
- A61M16/024—Control means therefor including calculation means, e.g. using a processor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
- A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
- A61M2016/0036—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the breathing tube and used in both inspiratory and expiratory phase
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Emergency Medicine (AREA)
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- Engineering & Computer Science (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Veterinary Medicine (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The application relates to a fan control method, a fan control device, a fan control apparatus, a fan control storage medium and a fan control program product. For a ventilator, the ventilator including a blower and a vent conduit through which the blower delivers gas, the method comprising: acquiring gas pressure data and gas flow rate data of a target position in the ventilation pipeline; determining the rotating speed of the fan according to the gas pressure data and the gas flow rate data; and adjusting the output pressure of the ventilation pipeline according to the rotating speed and the preset rotating speed. The output pressure can be accurately controlled by adopting the method.
Description
Technical Field
The present application relates to the technical field of medical devices, and in particular, to a method, an apparatus, a device, a storage medium, and a program product for controlling a fan.
Background
The breathing machine can assist the user with insufficient breathing or incapacity of breathing spontaneously to breathe by outputting air with certain pressure or flow rate. When the breathing machine works, the gas flow of the output pipeline needs to be accurately controlled so as to maintain the stability of the output pressure of the breathing machine.
In the related art, when the output pressure of the breathing machine is controlled, the control of the output gas flow of the breathing machine can be realized by controlling the opening of a proportional valve in a main exhaust pipeline of the breathing machine, so that the output pressure of the breathing machine is controlled.
However, the above-described technique has a problem in that the output pressure control is not accurate.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a fan control method, apparatus, device, storage medium, and program product that can precisely control the output pressure.
In a first aspect, the present application provides a blower control method for a ventilator, the ventilator including a blower and a vent conduit through which the blower delivers gas, the method comprising:
acquiring gas pressure data and gas flow rate data of a target position in the ventilation pipeline;
determining the rotating speed of the fan according to the gas pressure data and the gas flow rate data;
and adjusting the output pressure of the ventilation pipeline according to the rotating speed and the preset rotating speed.
In one embodiment, determining the rotation speed of the fan according to the gas pressure data and the gas flow rate data includes:
calculating to obtain target gas pressure data of a target position according to the gas pressure data in the preset duration;
Calculating to obtain target gas flow rate data of a target position according to the gas flow rate data in the preset duration;
and determining the rotating speed of the fan according to the target gas pressure data and the target gas flow rate data.
In one embodiment, the calculating the target gas pressure data of the target position according to the gas pressure data in the preset duration includes:
summing the gas pressure data and the bias pressure value to obtain summation data;
and carrying out root opening processing on the summation data according to the first root square value to obtain target gas pressure data.
In one embodiment, the calculating the target gas flow rate data of the target position according to the gas flow rate data in the preset duration includes:
and carrying out root opening processing on the gas flow velocity data according to the second root square value to obtain target gas flow velocity data.
In one embodiment, determining the rotation speed of the blower according to the target gas pressure data and the target gas flow rate data includes:
multiplying the target gas pressure data and the target gas flow rate data to obtain product data;
multiplying the product data, a preset rotating speed coefficient and a preset product coefficient to obtain the rotating speed of the fan.
In one embodiment, the fan includes a motor for controlling a rotation speed, and adjusts an output pressure of the ventilation pipe according to the rotation speed and a preset rotation speed, including:
if the rotating speed exceeds the preset rotating speed, reducing the current of the motor so as to reduce the output pressure of the ventilation pipeline;
if the rotating speed does not exceed the preset rotating speed, the current of the motor is increased so as to increase the output pressure of the ventilation pipeline.
In a second aspect, the present application further provides a fan control apparatus, including:
the acquisition module is used for acquiring gas pressure data and gas flow rate data of a target position in the ventilation pipeline;
the determining module is used for determining the rotating speed of the fan according to the gas pressure data and the gas flow rate data;
and the adjusting module is used for adjusting the output pressure of the ventilation pipeline according to the rotating speed and the preset rotating speed.
In a third aspect, the present application also provides an electronic device, including a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:
acquiring gas pressure data and gas flow rate data of a target position in the ventilation pipeline;
determining the rotating speed of the fan according to the gas pressure data and the gas flow rate data;
And adjusting the output pressure of the ventilation pipeline according to the rotating speed and the preset rotating speed.
In a fourth aspect, the present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of:
acquiring gas pressure data and gas flow rate data of a target position in the ventilation pipeline;
determining the rotating speed of the fan according to the gas pressure data and the gas flow rate data;
and adjusting the output pressure of the ventilation pipeline according to the rotating speed and the preset rotating speed.
In a fifth aspect, the present application also provides a computer program product comprising a computer program which, when executed by a processor, performs the steps of:
acquiring gas pressure data and gas flow rate data of a target position in the ventilation pipeline;
determining the rotating speed of the fan according to the gas pressure data and the gas flow rate data;
and adjusting the output pressure of the ventilation pipeline according to the rotating speed and the preset rotating speed.
The method, the device, the equipment, the storage medium and the program product for controlling the fan are used for a breathing machine, the breathing machine comprises the fan and a ventilation pipeline, the fan is used for conveying gas through the ventilation pipeline, the gas pressure data and the gas flow rate data of a target position in the ventilation pipeline are obtained, the rotating speed of the fan is determined according to the gas pressure data and the gas flow rate data, and the output pressure of the ventilation pipeline is adjusted according to the rotating speed and the preset rotating speed. In the method, firstly, the acquired gas pressure data and gas flow rate data of the target position can reflect the gas data of the target position in real time, and the fan rotating speed obtained through the gas pressure data and the gas flow rate data of the target position is only related to the gas pressure data and the gas flow rate data, so that the actual fan rotating speed under the ventilation pipelines of different materials can be accurately reflected without being influenced by other factors. Secondly, when the output pressure of the ventilation pipeline is regulated according to the rotating speed of the fan, compared with the mode of controlling the output pressure by controlling the opening of the proportional valve in the prior art, the mode of controlling the output pressure by combining the rotating speed of the fan enables the control of the output pressure to be more accurate, the output pressure is regulated according to the actual rotating speed of the fan and the preset rotating speed, the regulating range of the output pressure can be limited, and thus the accuracy of controlling the output pressure can be further improved when the output pressure is regulated.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for a person having ordinary skill in the art.
FIG. 1 is an internal block diagram of an electronic device in one embodiment;
FIG. 2 is a flow chart of a method of controlling a blower in one embodiment;
FIG. 3 is a flow chart of a method of controlling a blower in another embodiment;
FIG. 4 is a flow chart of a method of controlling a blower in another embodiment;
fig. 5 is a block diagram illustrating a structure of a blower control device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The breathing machine can assist the user with insufficient breathing or incapacity of breathing spontaneously to breathe by outputting air with certain pressure or flow rate. When the breathing machine works, the gas flow of the output pipeline needs to be accurately controlled so as to maintain the stability of the output pressure of the breathing machine.
In the related art, a main exhaust line of a ventilator generally includes a proportional valve for controlling the flow rate of gas by adjusting the opening of the valve when the gas flows through the line. The proportional valve is generally controlled by an electric, pneumatic or hydraulic actuator, and the opening degree of the valve can be changed by adjusting the working state of the actuator. When the output pressure of the breathing machine needs to be regulated, the gas flow can be changed by regulating the opening degree of the proportional valve. Specifically, if it is desired to increase the output pressure, the opening degree of the proportional valve may be appropriately increased so that more gas flows out through the piping, thereby increasing the output pressure; conversely, if it is desired to reduce the output pressure, the opening of the proportional valve may be reduced, and the gas flow may be reduced to reduce the output pressure.
The opening of the proportional valve is usually regulated by a control system of the breathing machine, the control system can calculate the opening of the proportional valve according to a target pressure value set by a user and an actually measured pressure value, and the opening of the valve is regulated by controlling an executing mechanism.
However, when the above technique is used for controlling the opening degree of the proportional valve, if the control loop of the proportional valve is improperly designed or the feedback signal is inaccurate, the system may oscillate, which may cause the proportional valve to rapidly change in the opening degree, thereby affecting the stability of the output of the system and resulting in inaccurate control of the output pressure. Therefore, embodiments of the present application provide a fan control method, apparatus, device, storage medium, and program product, which can solve the above technical problems.
The fan control method provided by the embodiment of the application can be applied to breathing machine equipment, wherein the breathing machine equipment comprises a control panel, a turbine fan, a ventilation pipeline, a sensor, electronic equipment and the like. Wherein the control panel typically includes a display screen and control buttons for monitoring and adjusting settings of the ventilator, such as inhalation pressure, exhalation pressure, respiratory rate, etc.; a turbo fan for generating a desired air flow and air pressure; the ventilation pipeline is used for conveying gas generated by the turbine fan; the sensor is used for acquiring gas data of the ventilation pipeline; and the electronic equipment is used for controlling the rotating speed of the turbine fan. The electronic device may be a single chip microcomputer or a microcontroller located inside the breathing machine, or may be a computer device located outside the breathing machine, where the computer device may be a terminal or a server, and the internal structure of the electronic device may be as shown in fig. 1, taking the terminal as an example. The computer device includes a processor, a memory, a communication interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The communication interface of the computer device is used for carrying out wired or wireless communication with an external terminal, and the wireless mode can be realized through WIFI, an operator network, NFC (near field communication) or other technologies. The computer program when executed by a processor implements a fan control method. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be keys, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the structure shown in fig. 1 is merely a block diagram of a portion of the structure associated with the present application and is not limiting of the electronic device to which the present application is applied, and that a particular electronic device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a method for controlling a blower is provided, where the method is a specific process of how to control output pressure, as shown in fig. 2, and the method is used for a ventilator, where the ventilator includes a blower and a ventilation pipe, and the blower delivers gas through the ventilation pipe, and the method may include the following steps:
s202, acquiring gas pressure data and gas flow rate data of a target position in the ventilation pipeline.
The ventilation pipeline is connected with the ventilator body through a special connection interface and is used for conveying gas output by a ventilator of the ventilator. The target location of the vent conduit refers to a specific location where gas pressure and gas flow rate need to be acquired, and may specifically be the conduit end of the vent conduit. Further, the gas pressure data of the target position refers to the pressure of the gas at the target position against the unit area, that is, the gas pressure. The gas flow rate data of the target location refers to the volume of gas that passes through the target location per unit time.
The acquired gas pressure data and gas flow rate data may be instantaneous data or average data over a period of time, which is not particularly limited in this embodiment.
In acquiring the gas pressure data and the gas flow rate data of the target position in the ventilation pipe, the sensor or the measuring device, such as the pressure sensor, the flow rate sensor, etc., may be configured at the target position in the ventilation pipe, so that the data of the gas pressure and the gas flow rate may be acquired in the ventilation pipe, or other manners may be adopted to acquire the data of the gas pressure and the data of the gas flow rate, which is not limited in particular in this embodiment.
Specifically, a sensor is configured at a target position in the ventilation pipeline, gas pressure data and gas flow rate data are collected through the sensor, the collected gas pressure data and gas flow rate data can be transmitted to electronic equipment, and the electronic equipment can acquire the gas pressure data and the gas flow rate data of the target position in the ventilation pipeline. The electronic device can be a singlechip and a microprocessor in the breathing machine, or can be computer equipment.
S204, determining the rotating speed of the fan according to the gas pressure data and the gas flow rate data.
The rotation speed of the fan refers to the rotation speed of the fan blade, and is usually expressed in revolutions per minute, the unit is revolutions per minute, the fan generates air flow through the rotating blade, and the generated air flow can be conveyed through the ventilation pipeline. The fan itself has a certain relation with the gas pressure and the gas flow rate of the gas transmitted through the ventilation pipeline through the rotating speed generated by the motor, and the larger the rotating speed is, the larger the gas pressure is and the larger the gas flow rate is.
Further, when the rotational speed of the fan is determined according to the gas pressure data and the gas flow rate data, the gas pressure and the flow rate data can be corresponding to a performance curve according to given gas pressure and flow rate data, the performance curve comprises pressure and flow rate relations at different rotational speeds, and the rotational speed can be obtained through the performance curve. Alternatively, a mathematical model may be established based on a mathematical model of the blower performance equation using the aerodynamic equation and the blower performance equation, substituting given gas pressure and flow rate data into the model, and calculating the rotational speed of the blower by solving the system of equations. Or, the computer simulation software can be used for inputting given gas pressure and flow rate data by using a fan performance equation and a gas dynamics model, performing numerical simulation, and finding the rotating speed matched with the given data by adjusting the rotating speed of the fan and observing the simulation result. Of course, other methods may be used, and this embodiment is not particularly limited thereto.
Specifically, after the gas pressure data and the gas flow rate data of the target position in the ventilation pipeline are obtained, a mathematical equation of the gas pressure data, the gas flow rate data and the fan rotating speed is constructed according to the gas pressure data and the gas flow rate data, and the obtained gas pressure data and the obtained gas flow rate data are substituted into the mathematical equation to obtain the fan rotating speed.
S206, adjusting the output pressure of the ventilation pipeline according to the rotating speed and the preset rotating speed.
The preset rotating speed is the rotating speed of the fan corresponding to the pressure which is required to be output currently by the breathing machine, the corresponding rotating speed values of the preset rotating speed are different under different conditions, and the preset rotating speed generally does not exceed the maximum rotating speed value of the fan. In addition, the output pressure of the ventilation pipeline is related to the fan rotation speed and the pipeline length, and when the pipeline length is fixed, the fan rotation speed is higher, and the output pressure is higher.
When the output pressure is adjusted according to the rotation speed and the preset rotation speed, the difference between the rotation speed and the preset rotation speed may be used as a basis for adjusting the pressure, for example, if the difference between the rotation speed and the preset rotation speed exceeds a specific threshold, the rotation speed of the fan is reduced or increased to adjust the output pressure. Or, the rotation speed can be compared with a preset rotation speed, and the comparison result is used as a basis for pressure adjustment, for example, if the rotation speed is lower than the preset rotation speed, the rotation speed of the fan is increased to adjust the output pressure. Alternatively, the output pressure may be adjusted by other means, which is not particularly limited in this embodiment.
Specifically, after the rotational speed of the fan is obtained through calculation, the output pressure of the ventilation pipeline is adjusted according to the calculated rotational speed and the preset rotational speed.
The fan control method is used for the breathing machine, the breathing machine comprises a fan and a ventilation pipeline, the fan is used for conveying gas through the ventilation pipeline, the gas pressure data and the gas flow rate data of a target position in the ventilation pipeline are obtained, the rotating speed of the fan is determined according to the gas pressure data and the gas flow rate data, and the output pressure of the ventilation pipeline is adjusted according to the rotating speed and a preset rotating speed. In the method, firstly, the acquired gas pressure data and gas flow rate data of the target position can reflect the gas data of the target position in real time, and the fan rotating speed obtained through the gas pressure data and the gas flow rate data of the target position is only related to the gas pressure data and the gas flow rate data, so that the actual fan rotating speed under the ventilation pipelines of different materials can be accurately reflected without being influenced by other factors. Secondly, when the output pressure of the ventilation pipeline is regulated according to the rotating speed of the fan, compared with the mode of controlling the output pressure by controlling the opening of the proportional valve in the prior art, the mode of controlling the output pressure by combining the rotating speed of the fan enables the control of the output pressure to be more accurate, the output pressure is regulated according to the actual rotating speed of the fan and the preset rotating speed, the regulating range of the output pressure can be limited, and thus the accuracy of controlling the output pressure can be further improved when the output pressure is regulated.
The above embodiment mentions that the rotational speed of the blower can be determined based on the gas pressure data and the gas flow rate data, and the following embodiment describes an embodiment of how the rotational speed of the blower is determined specifically.
In another embodiment, another fan control method is provided, and based on the above embodiment, as shown in fig. 3, the step S204 may include the following steps:
s302, calculating to obtain target gas pressure data of a target position according to the gas pressure data in the preset duration.
The preset duration may be in units of seconds or minutes, which is not specifically limited in this embodiment. The preset duration may be 1 second in seconds and 1 minute in minutes. When the preset duration is 1 second, it means that one gas pressure data is acquired every second. When the preset duration is 1 minute, the data acquired every second are subjected to averaging processing, and average gas pressure data within 1 minute are obtained. The target gas pressure data is data relating to the gas pressure obtained by performing calculation processing on the obtained gas pressure data.
In this step, according to the gas pressure data within the preset duration, calculating to obtain target gas pressure data of the target position, and as an optional embodiment, summing the gas pressure data and the bias pressure value to obtain summed data; and carrying out root opening processing on the summation data according to the first root square value to obtain target gas pressure data.
The offset pressure value is obtained by adding an offset to the obtained gas pressure data, and the gas pressure data under the influence of environmental change can be compensated by adding the offset pressure value, so that the reliability of the gas pressure data is ensured. The first root-mean-square value is a root-mean-square value corresponding to the pressure data when the root-mean-square is opened.
Further, the bias pressure value may be obtained by combining historical data, specifically, a reference value may be obtained for the historical gas pressure data, then each gas pressure data in the historical gas pressure data is subtracted from the reference value to obtain a bias corresponding to each gas pressure data, and then a median value is obtained for a plurality of biases to be used as a final bias pressure value, or a mean value may be obtained for a plurality of biases to be used as a final bias pressure value, which is not limited in this embodiment.
Further, the value of the first root-mean-square value may be obtained by combining historical data, specifically, it may be assumed that the gas pressure data and the fan rotation speed are in root-mean-square relationship, a certain relationship equation is satisfied, the gas pressure data and the corresponding fan rotation speed at each moment are input into the relationship equation, a root-mean-square coefficient between the gas pressure data and the corresponding fan rotation speed at each moment is obtained, and then the root-mean-square coefficients are averaged to obtain the first root-mean-square value. Alternatively, the first root-mean-square value may be obtained by other means, which is not particularly limited in this embodiment.
After the bias pressure value and the first root-mean-square value are obtained through the history data, the bias pressure value may be 10.5598, and the first root-mean-square value may be-1.332.
Specifically, after the offset pressure value is obtained, the gas pressure data and the offset pressure value are summed to offset the gas pressure data, summation data are obtained, after the summation data are obtained, root opening processing is carried out on the summation data according to the first root part value, a corresponding root part value is obtained, and the root part value is confirmed to be target gas pressure data.
S304, calculating to obtain target gas flow rate data of a target position according to the gas flow rate data in the preset duration.
The preset duration is the same as the preset duration in the step S302, and will not be described herein. The target gas flow rate data is data related to the gas flow rate obtained by performing calculation processing on the obtained gas flow rate data.
In this step, according to the gas flow rate data within the preset duration, the target gas flow rate data of the target position is calculated, and as an optional embodiment, the gas flow rate data is processed according to the second root-mean-square value, so as to obtain the target gas flow rate data.
The second root party value refers to the root party value corresponding to the root party when the root party is opened for the streaming data. Further, the value of the second root part value may be obtained by combining with the history data, and specifically, the second root part value may be obtained by adopting the same obtaining manner as the first root part value, which will not be described herein. After the second root-mean-square value is obtained from the historical data, the second root-mean-square value may be 0.7732.
Specifically, after the gas flow rate data and the second root-mean-square value are obtained, the root-mean-square data is obtained for the gas flow rate data according to the second root-mean-square value, the corresponding root-mean-square value is obtained, and the root-mean-square value is confirmed as the target gas flow rate data.
S306, determining the rotating speed of the fan according to the target gas pressure data and the target gas flow rate data.
In this step, the target gas pressure data and the target gas flow rate data are obtained by processing the gas pressure data and the gas flow rate data, and then the rotation speed of the blower can be calculated according to the target gas pressure data and the target gas flow rate data. As an alternative embodiment, the target gas pressure data and the target gas flow rate data are multiplied to obtain product data; multiplying the product data, a preset rotating speed coefficient and a preset product coefficient to obtain the rotating speed of the fan.
The preset rotation speed coefficient refers to a coefficient required for converting the gas pressure data and the gas flow rate data into rotation speed data, and may specifically be set to 1000, or may also be other values, which is not specifically limited in this embodiment. In addition, the preset product coefficient refers to a product coefficient for performing product processing on product data of the target gas flow rate data and the target gas pressure data, and may specifically be set to 4.339, or may also be another value, which is not specifically limited in this embodiment.
Further, the rotation speed of the blower is determined according to the target gas pressure data and the target gas flow rate data, and can be referred to as formula (1).
Formula (1)
Wherein, the rotating speed of the fan is the rotating speed of the fan,for a preset rotation speed coefficient, for a preset product coefficient, +.>For the first root-mean-square coefficient, < > and->For the second root-mean-square coefficient->For gas pressure data, +.>For the value of the bias pressure>As the data of the flow rate of the gas,for target gas pressure data, +.>Is the target gas flow rate data. Through the relation between the gas pressure data and the gas flow rate data and the fan rotating speed in the formula (1), after the gas pressure data and the gas flow rate data at the current moment are input, the fan rotating speed corresponding to the current moment can be calculated.
Specifically, after the target gas pressure data and the target gas flow rate data are obtained, multiplying the target gas pressure data and the target gas flow rate data to obtain a product result of the target gas pressure data and the target gas flow rate data, and multiplying the product result with a preset rotating speed coefficient and a preset product coefficient to obtain the rotating speed of the fan.
In this embodiment, the target gas pressure data of the target position is obtained by calculation according to the gas pressure data within the preset duration, the target gas flow rate data of the target position is obtained by calculation according to the gas flow rate data within the preset duration, and the rotation speed of the fan is determined according to the target gas pressure data and the target gas flow rate data. The fan rotating speed obtained through calculation of the gas pressure data and the gas flow rate data is only related to the gas pressure data and the gas flow rate data, is not influenced by other factors, and can accurately reflect the actual fan rotating speed under the ventilation pipelines of different materials.
Further, when calculating the target gas pressure data, summing the gas pressure data and the offset pressure value to obtain summation data, and performing root-opening processing on the summation data according to the first root-side value to obtain the target gas pressure data. The reliability of the gas pressure data can be improved by adding the offset pressure value to the gas pressure data, and the calculated target gas pressure data can be more accurate by carrying out root-opening processing on the summation data according to the first root-opening data. Further, when calculating the target gas flow rate data, performing root opening processing on the gas flow rate data according to the second root square value to obtain the target gas flow rate data. The root opening method is carried out on the gas flow velocity data, so that the calculated target gas flow velocity data can be more accurate, and the obtained fan rotating speed is more accurate when the fan rotating speed is calculated according to the target gas flow velocity data and the target gas flow velocity data.
Further, when the rotating speed of the fan is determined according to the target gas pressure data and the target gas flow rate data, multiplying the target gas pressure data and the target gas flow rate data to obtain product data, and multiplying the product data, a preset rotating speed coefficient and a preset product coefficient to obtain the rotating speed of the fan. The relation between the target gas pressure data and the target gas flow rate data and the fan speed obtained by multiplying the target gas pressure data and the target gas flow rate data and then multiplying the fan speed obtained by multiplying the preset speed coefficient and the preset product coefficient can be accurately described, and the fan speed obtained by calculation is only related to the gas pressure data and the gas flow rate data, is not influenced by other factors, and can accurately reflect the actual fan speed under different material ventilation pipelines.
The above embodiments have mentioned that the output pressure of the ventilation pipe may be adjusted according to the rotation speed and the preset rotation speed, and the following embodiments describe how to adjust the output pressure of the ventilation pipe.
In another embodiment, another fan control method is provided, where the fan includes a motor for controlling a rotation speed, as shown in fig. 4, and the step S206 may include the following steps, based on the above embodiment:
and S402, if the rotating speed exceeds the preset rotating speed, reducing the current of the motor so as to reduce the output pressure of the ventilation pipeline.
When the motor works below rated current, the rotating speed of the motor may be in direct proportion to the current, the rotating speed of the motor can be controlled by adjusting the current of the motor, and when the current of the motor is controlled, the current of the motor can be controlled by a driver connected with the motor of the fan, specifically, the electronic equipment sends an instruction to the driver, the driver receives the instruction sent by the electronic equipment, and the current of the motor is adjusted according to the instruction. In addition, the output pressure of the ventilation pipeline is affected by the rotation speed of the fan, the output pressure of the ventilation pipeline can be obtained by configuring a pressure sensor at the tail end of the pipeline, the output pressure can be obtained in real time, the output pressure can also be obtained according to the adjustment frequency of the motor current, that is, the output pressure of the current ventilation pipeline can be correspondingly obtained when the motor current is adjusted once, or time intervals can be set, and the output pressure of the ventilation pipeline can be obtained once in each time interval, which is not particularly limited in this embodiment. Further, there is a correspondence between the preset rotation speed and the output pressure of the ventilation pipeline, under different conditions, the output pressure required by the ventilation pipeline can be set first, and according to the correspondence between the output pressure of the ventilation pipeline and the rotation speed, the preset rotation speed corresponding to the output pressure can be determined, that is, when the rotation speed reaches the preset rotation speed, the output pressure of the ventilation pipeline can also reach the required output pressure.
In this step, when the calculated fan rotation speed exceeds the preset rotation speed, the electronic device may send a corresponding PWM signal to the motor driver to adjust the current of the motor, adjust the average voltage of the motor by periodically changing the duty ratio of the power supply voltage, and adjust the average current of the motor by changing the duty ratio, thereby controlling the speed and torque of the motor. The average voltage received by the motor can be reduced by reducing the duty ratio of the PWM signal, so that the current of the motor is reduced, and after the current of the motor is reduced, the rotating speed of the fan is correspondingly reduced, so that the output pressure of the ventilation pipeline is reduced.
It should be noted that, when the current of the motor is reduced, the current of the motor may be continuously and slowly reduced, the current of the motor may be gradually reduced by setting a step size, or the current of the motor may be reduced by other manners, which is not particularly limited in this embodiment.
Specifically, after the fan rotating speed is obtained through calculation, comparing the fan rotating speed with a preset rotating speed, and if the fan rotating speed exceeds the preset rotating speed, the electronic equipment can reduce the current of the motor by reducing the duty ratio of the PWM signal so as to reduce the output pressure of the ventilation pipeline.
And S404, if the rotating speed does not exceed the preset rotating speed, increasing the current of the motor so as to increase the output pressure of the ventilation pipeline.
In this step, when the calculated rotation speed of the fan does not exceed the preset rotation speed, the electronic device may send a corresponding PWM signal to the motor driver to adjust the current of the motor, and increase the average voltage received by the motor by increasing the duty ratio of the PWM signal, thereby increasing the current of the motor, and when the current of the motor increases, the rotation speed of the fan also increases accordingly, thereby increasing the output pressure of the ventilation pipe.
Further, after the fan rotation speed is calculated, the calculated fan rotation speeds in each preset time period can be compared, and the output pressure of the breathing machine is adjusted according to whether the fan rotation speeds exceed the preset rotation speeds.
Specifically, after the fan rotating speed is obtained through calculation, comparing the fan rotating speed with a preset rotating speed, and if the fan rotating speed does not exceed the preset rotating speed, the electronic equipment can increase the current of the motor by increasing the duty ratio of the PWM signal so as to increase the output pressure of the ventilation pipeline.
In this embodiment, the fan includes a motor for controlling the rotation speed, and if the rotation speed exceeds a preset rotation speed, the current of the motor is reduced to reduce the output pressure of the ventilation pipe, and if the rotation speed does not exceed the preset rotation speed, the current of the motor is increased to increase the output pressure of the ventilation pipe. The output pressure of the ventilation pipeline can be ensured to be stable by judging whether the rotating speed exceeds the preset rotating speed to reduce or increase the current of the motor so as to reduce or increase the output pressure of the ventilation pipeline, and the accuracy of the control of the output pressure can be improved due to the real-time property of the rotating speed when the output pressure is adjusted according to the rotating speed.
In the following, a detailed embodiment is given to illustrate the technical solution of the present application by taking the control of the fan rotation speed according to the gas flow rate data and the gas pressure data as an example, and on the basis of the above embodiment, the method may include the following steps:
s1, acquiring gas pressure data per second at the tail end of a ventilation pipelineGas flow rate data->；
S2, according to the gas pressure data per secondCalculating target gas pressure data +.>；
S3, according to the gas flow velocity data per secondCalculating target gas flow rate data +.>；
S4, multiplying the target and pressure data thereof by target gas flow velocity data and then by a preset rotation speed coefficientA predetermined product coefficient ∈ ->Calculating the rotating speed of the fan>；
S5, if the rotating speed of the fan exceeds the preset rotating speed, reducing the current of the motor so as to reduce the output pressure of the ventilation pipeline;
and S6, if the rotating speed of the fan does not exceed the preset rotating speed, increasing the current of the motor so as to increase the output pressure of the ventilation pipeline.
Based on the same inventive concept, the embodiment of the application also provides a fan control device for realizing the fan control method. The implementation of the solution provided by the device is similar to the implementation described in the above method, so the specific limitation of the embodiment of one or more fan control devices provided below may be referred to the limitation of the fan control method hereinabove, and will not be repeated here.
In one embodiment, as shown in fig. 5, there is provided a fan control apparatus including: the device comprises an acquisition module, a determination module and an adjustment module, wherein:
the acquisition module is used for acquiring gas pressure data and gas flow rate data of a target position in the ventilation pipeline;
the determining module is used for determining the rotating speed of the fan according to the gas pressure data and the gas flow rate data;
and the adjusting module is used for adjusting the output pressure of the ventilation pipeline according to the rotating speed and the preset rotating speed.
In another embodiment, another fan control apparatus is provided, and on the basis of the above embodiment, the determining module includes a first calculating unit, a second calculating unit, and a determining unit, where:
the first calculation unit is used for calculating target gas pressure data of a target position according to the gas pressure data in the preset duration;
the second calculation unit is used for calculating target gas flow rate data of a target position according to the gas flow rate data in the preset duration;
and the determining unit is used for determining the rotating speed of the fan according to the target gas pressure data and the target gas flow rate data.
Optionally, the first computing unit may include:
The summation subunit is used for summing the gas pressure data and the offset pressure value to obtain summation data;
and the first processing subunit is used for carrying out root opening processing on the summation data according to the first root-mean-square value to obtain target gas pressure data.
Optionally, the second calculating unit may include:
and the second processing subunit performs root opening processing on the gas flow rate data according to the second root square value to obtain target gas flow rate data.
Optionally, the determining unit may include:
the first multiplication unit is used for multiplying the target gas pressure data and the target gas flow rate data to obtain product data;
and the second multiplying unit is used for multiplying the product data, the preset rotating speed coefficient and the preset product coefficient to obtain the rotating speed of the fan.
In another embodiment, another fan control apparatus is provided, and the adjusting module includes a lowering processing unit and a raising processing unit on the basis of the above embodiment, wherein:
the reduction processing unit is used for reducing the current of the motor if the rotating speed exceeds the preset rotating speed so as to reduce the output pressure of the ventilation pipeline;
and the rising processing unit is used for increasing the current of the motor to increase the output pressure of the ventilation pipeline if the rotating speed does not exceed the preset rotating speed.
The respective modules in the fan control apparatus described above may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or independent of a processor in the electronic device, or may be stored in software in a memory in the electronic device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, an electronic device is provided that includes a memory having a computer program stored therein and a processor that when executing the computer program performs the steps of:
acquiring gas pressure data and gas flow rate data of a target position in the ventilation pipeline; determining the rotating speed of the fan according to the gas pressure data and the gas flow rate data; and adjusting the output pressure of the ventilation pipeline according to the rotating speed and the preset rotating speed.
In one embodiment, the processor when executing the computer program further performs the steps of:
calculating to obtain target gas pressure data of a target position according to the gas pressure data in the preset duration; calculating to obtain target gas flow rate data of a target position according to the gas flow rate data in the preset duration; and determining the rotating speed of the fan according to the target gas pressure data and the target gas flow rate data.
In one embodiment, the processor when executing the computer program further performs the steps of:
summing the gas pressure data and the bias pressure value to obtain summation data; and carrying out root opening processing on the summation data according to the first root square value to obtain target gas pressure data.
In one embodiment, the processor when executing the computer program further performs the steps of:
and carrying out root opening processing on the gas flow velocity data according to the second root square value to obtain target gas flow velocity data.
In one embodiment, the processor when executing the computer program further performs the steps of:
multiplying the target gas pressure data and the target gas flow rate data to obtain product data; multiplying the product data, a preset rotating speed coefficient and a preset product coefficient to obtain the rotating speed of the fan.
In one embodiment, the processor when executing the computer program further performs the steps of:
if the rotating speed exceeds the preset rotating speed, reducing the current of the motor so as to reduce the output pressure of the ventilation pipeline; if the rotating speed does not exceed the preset rotating speed, the current of the motor is increased so as to increase the output pressure of the ventilation pipeline.
In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:
Acquiring gas pressure data and gas flow rate data of a target position in the ventilation pipeline; determining the rotating speed of the fan according to the gas pressure data and the gas flow rate data; and adjusting the output pressure of the ventilation pipeline according to the rotating speed and the preset rotating speed.
In one embodiment, the computer program when executed by the processor further performs the steps of:
calculating to obtain target gas pressure data of a target position according to the gas pressure data in the preset duration; calculating to obtain target gas flow rate data of a target position according to the gas flow rate data in the preset duration; and determining the rotating speed of the fan according to the target gas pressure data and the target gas flow rate data.
In one embodiment, the computer program when executed by the processor further performs the steps of:
summing the gas pressure data and the bias pressure value to obtain summation data; and carrying out root opening processing on the summation data according to the first root square value to obtain target gas pressure data.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and carrying out root opening processing on the gas flow velocity data according to the second root square value to obtain target gas flow velocity data.
In one embodiment, the computer program when executed by the processor further performs the steps of:
multiplying the target gas pressure data and the target gas flow rate data to obtain product data; multiplying the product data, a preset rotating speed coefficient and a preset product coefficient to obtain the rotating speed of the fan.
In one embodiment, the computer program when executed by the processor further performs the steps of:
if the rotating speed exceeds the preset rotating speed, reducing the current of the motor so as to reduce the output pressure of the ventilation pipeline; if the rotating speed does not exceed the preset rotating speed, the current of the motor is increased so as to increase the output pressure of the ventilation pipeline.
In one embodiment, a computer program product is provided comprising a computer program which, when executed by a processor, performs the steps of:
acquiring gas pressure data and gas flow rate data of a target position in the ventilation pipeline; determining the rotating speed of the fan according to the gas pressure data and the gas flow rate data; and adjusting the output pressure of the ventilation pipeline according to the rotating speed and the preset rotating speed.
In one embodiment, the computer program when executed by the processor further performs the steps of:
calculating to obtain target gas pressure data of a target position according to the gas pressure data in the preset duration; calculating to obtain target gas flow rate data of a target position according to the gas flow rate data in the preset duration; and determining the rotating speed of the fan according to the target gas pressure data and the target gas flow rate data.
In one embodiment, the computer program when executed by the processor further performs the steps of:
summing the gas pressure data and the bias pressure value to obtain summation data; and carrying out root opening processing on the summation data according to the first root square value to obtain target gas pressure data.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and carrying out root opening processing on the gas flow velocity data according to the second root square value to obtain target gas flow velocity data.
In one embodiment, the computer program when executed by the processor further performs the steps of:
multiplying the target gas pressure data and the target gas flow rate data to obtain product data; multiplying the product data, a preset rotating speed coefficient and a preset product coefficient to obtain the rotating speed of the fan.
In one embodiment, the computer program when executed by the processor further performs the steps of:
if the rotating speed exceeds the preset rotating speed, reducing the current of the motor so as to reduce the output pressure of the ventilation pipeline; if the rotating speed does not exceed the preset rotating speed, the current of the motor is increased so as to increase the output pressure of the ventilation pipeline.
It should be noted that, the data (including, but not limited to, data for analysis, data stored, data displayed, etc.) referred to in the present application are all data fully authorized by each party, and the collection, use, and processing of the relevant data are required to meet the relevant regulations.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the various embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the various embodiments provided herein may include at least one of relational databases and non-relational databases. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic units, quantum computing-based data processing logic units, etc., without being limited thereto.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.
Claims (10)
1. A method of blower control for a ventilator, the ventilator including a blower and a ventilation conduit through which the blower delivers gas, the method comprising:
acquiring gas pressure data and gas flow rate data of a target position in the ventilation pipeline;
determining the rotating speed of the fan according to the gas pressure data and the gas flow rate data;
And adjusting the output pressure of the ventilation pipeline according to the rotating speed and the preset rotating speed.
2. The method of claim 1, wherein said determining a rotational speed of said blower from said gas pressure data and said gas flow rate data comprises:
calculating to obtain target gas pressure data of the target position according to the gas pressure data in the preset duration;
calculating to obtain target gas flow rate data of the target position according to the gas flow rate data in the preset duration;
and determining the rotating speed of the fan according to the target gas pressure data and the target gas flow rate data.
3. The method of claim 2, wherein the calculating the target gas pressure data for the target location based on the gas pressure data for a predetermined duration comprises:
summing the gas pressure data and the bias pressure value to obtain summation data;
and carrying out root opening processing on the summation data according to the first root square value to obtain target gas pressure data.
4. The method of claim 2, wherein the calculating the target gas flow rate data for the target location based on the gas flow rate data for the preset duration comprises:
And carrying out root opening processing on the gas flow velocity data according to the second root formula value to obtain target gas flow velocity data.
5. The method of claim 2, wherein said determining the rotational speed of the blower from the target gas pressure data and the target gas flow rate data comprises:
multiplying the target gas pressure data and the target gas flow rate data to obtain product data;
multiplying the product data, a preset rotating speed coefficient and a preset product coefficient to obtain the rotating speed of the fan.
6. The method of claim 1, wherein the fan comprises a motor controlling a rotational speed, and wherein adjusting the output pressure of the vent conduit based on the rotational speed and a preset rotational speed comprises:
if the rotating speed exceeds the preset rotating speed, reducing the current of the motor so as to reduce the output pressure of the ventilation pipeline;
and if the rotating speed does not exceed the preset rotating speed, increasing the current of the motor so as to increase the output pressure of the ventilation pipeline.
7. A fan control apparatus, the apparatus comprising:
the acquisition module is used for acquiring gas pressure data and gas flow rate data of a target position in the ventilation pipeline;
The determining module is used for determining the rotating speed of the fan according to the gas pressure data and the gas flow rate data;
and the adjusting module is used for adjusting the output pressure of the ventilation pipeline according to the rotating speed and the preset rotating speed.
8. An electronic device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any one of claims 1 to 6 when the computer program is executed.
9. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 6.
10. A computer program product comprising a computer program, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 6.
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