CN108007839B - Damping detector control method, computer readable storage medium and damping detector - Google Patents
Damping detector control method, computer readable storage medium and damping detector Download PDFInfo
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- CN108007839B CN108007839B CN201711255590.2A CN201711255590A CN108007839B CN 108007839 B CN108007839 B CN 108007839B CN 201711255590 A CN201711255590 A CN 201711255590A CN 108007839 B CN108007839 B CN 108007839B
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- air pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/084—Testing filters
Abstract
The invention discloses a damping detector control method, a computer readable storage medium and a damping detector, wherein the damping detector control method comprises the following steps: starting the fan to generate negative pressure in the test cavity, and enabling the fan to run at a target rotating speed; detecting air pressure in the test cavity and air pressure outside the test cavity respectively at least when the fan runs at a target rotating speed; and taking the air pressure difference between the air pressure in the test cavity and the air pressure outside the test cavity to obtain the air pressure difference, and outputting the air pressure difference. According to the technical scheme, the air pressure inside and outside the test cavity is detected at least when the fan runs at the target rotating speed, the air pressure inside and outside the test cavity is subjected to difference, the air pressure difference is obtained, the air pressure difference is output, and therefore the damping of the tested filter is indicated by the air pressure difference. Compared with the existing damping detector control method, the damping detector control method disclosed by the invention is simple in operation steps, can realize rapid detection of the filter element, and improves the damping detection efficiency of the filter element.
Description
Technical Field
The invention relates to the field of air purification, in particular to a damping detector control method, a computer readable storage medium and a damping detector.
Background
Along with the improvement of the living standard of people, the requirements of people on the quality of indoor air are also higher. In recent years, air cleaners have been favored because they can clean indoor air and improve the quality of the indoor air. One of the most core components of the air purifier is a filter. Before the air purifier is assembled, damping detection is usually required for the filter element so as to estimate the air inlet quantity of the air purifier.
However, the existing damping detector has the defects of complex detection method, complex operation in the detection process and low detection efficiency because of a plurality of detection items, and workers can only sample and detect a large number of filter pieces, but can not detect each filter piece.
Disclosure of Invention
The invention mainly aims to provide a control method of a damping detector, aiming at improving the detection efficiency of the damping detector.
In order to achieve the above object, the present invention provides a control method of a damping detector for detecting damping of a filter, the control method of the damping detector comprising:
starting a fan to generate negative pressure in the test cavity, and enabling the fan to run at a target rotating speed;
detecting air pressure in the test cavity and outside the test cavity respectively at least when the fan runs at a target rotating speed;
and taking the air pressure difference between the air pressure in the test cavity and the air pressure outside the test cavity to obtain the air pressure difference, and outputting the air pressure difference.
Preferably, the step of detecting the air pressure inside the test chamber and outside the test chamber respectively specifically includes:
when the fan runs at a first rotating speed, detecting first air pressure in the test cavity and second air pressure outside the test cavity respectively; when the fan runs at the target rotating speed, detecting the third air pressure in the test cavity and the fourth air pressure outside the test cavity respectively; the first rotational speed is less than the target rotational speed;
the step of obtaining the air pressure difference by taking the air pressure difference between the inside of the test cavity and the outside of the test cavity specifically comprises the following steps:
when the fan runs at a first rotating speed, the first air pressure and the second air pressure are subjected to difference to obtain a first air pressure difference; when the fan runs at the target rotating speed, the third air pressure and the fourth air pressure are subjected to difference to obtain damping air pressure difference; the first rotational speed is less than the target rotational speed;
the damping detector control method further comprises the following steps:
comparing whether the first air pressure difference is larger than a preset first reference pressure difference or not; if yes, it is determined that the filter under test has been installed.
Preferably, before the step of starting the fan to generate negative pressure in the test chamber and operating the fan at the target rotation speed, the method further includes:
and reading a currently selected filter test mode and a mapping table corresponding to the filter test mode, wherein the mapping table at least comprises the target rotating speed.
Preferably, the step of starting the fan to generate negative pressure in the test cavity and running the fan at the target rotation speed specifically includes:
detecting the current flow of air in the test cavity;
comparing whether the current flow is greater than a target flow; if yes, the rotating speed of the fan is reduced; if not, the rotating speed of the fan is increased; and when the flow of the air in the test cavity reaches the target flow, the rotating speed of the fan is the target rotating speed.
Preferably, the step of detecting the current flow rate of air in the test chamber specifically includes:
and detecting the flow rate of air in the air pipe communicated with the fan and the test cavity to determine the current flow rate.
Preferably, before the step of starting the fan to generate negative pressure in the test chamber and operating the fan at the target rotation speed, the method further includes:
and reading a currently selected filter test mode and a mapping table corresponding to the filter test mode, wherein the mapping table at least comprises the target flow.
The invention also provides a computer readable storage medium, the computer readable storage medium stores a damping detector control program, the damping detector control program realizes the step of the damping detector control method when being executed by a processor, the step comprises:
starting a fan to generate negative pressure in the test cavity, and enabling the fan to run at a target rotating speed;
detecting air pressure in the test cavity and outside the test cavity respectively at least when the fan runs at a target rotating speed;
and taking the air pressure difference between the air pressure in the test cavity and the air pressure outside the test cavity to obtain the air pressure difference, and outputting the air pressure difference.
The invention also provides a damping detector for detecting damping of the filter element, the damping detector comprises:
the fan is used for exhausting air to the test cavity of the damping detector;
a memory storing a damping detector control program; and
and the processor is used for realizing the step of a damping detector control method when executing the damping detector control program, and the step comprises the following steps:
starting a fan to generate negative pressure in the test cavity, and enabling the fan to run at a target rotating speed;
detecting air pressure in the test cavity and outside the test cavity respectively at least when the fan runs at a target rotating speed;
and taking the air pressure difference between the air pressure in the test cavity and the air pressure outside the test cavity to obtain the air pressure difference, and outputting the air pressure difference.
According to the technical scheme, the air pressure inside the test cavity and the air pressure outside the test cavity are detected respectively at least when the fan runs at the target rotating speed, the air pressure inside the test cavity and the air pressure outside the test cavity are taken as differences to obtain the air pressure difference, and the air pressure difference is output, so that the air pressure difference is used for indicating the damping of the tested filter. Compared with the existing damping detector control method, the damping detector control method disclosed by the invention is simple in operation steps, can realize rapid detection of the filter element, and improves the damping detection efficiency of the filter element.
Drawings
FIG. 1 is a flow chart of an embodiment of a method for controlling a damping detector according to the present invention;
FIG. 2 is a flowchart showing the steps for detecting the air pressure inside and outside the test chamber, respectively, according to another embodiment of the control method of the damping detector of the present invention;
FIG. 3 is a flowchart illustrating a step of obtaining a differential air pressure by taking a differential air pressure between the inside and outside of the test chamber in the embodiment of FIG. 2;
FIG. 4 is a flow chart showing steps after the differential air pressure is obtained by taking the differential air pressure inside the test chamber and outside the test chamber in the embodiment of FIG. 2;
FIG. 5 is a flowchart showing steps before starting a fan to generate negative pressure in a test chamber and operating the fan at a target rotational speed according to another embodiment of the control method of the damping detector of the present invention;
FIG. 6 is a flowchart illustrating a step of operating the fan at a target rotational speed according to still another embodiment of the damping detector control method of the present invention.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. All other embodiments, which can be made by those skilled in the art without the inventive effort, are intended to be within the scope of the present invention.
The technical solutions between the embodiments may be combined with each other, but it is necessary to base the implementation on the basis of those skilled in the art that when the combination of technical solutions contradicts or cannot be implemented, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.
The invention provides a control method of a damping detector, which is used for detecting damping of a filter.
In one embodiment of the present invention, as shown in fig. 1, the damping detector control method includes:
step S10, starting a fan to generate negative pressure in a test cavity, and enabling the fan to run at a target rotating speed;
step S20, detecting air pressure in the test cavity and air pressure outside the test cavity respectively at least when the fan runs at a target rotating speed;
and step S30, taking the air pressure difference between the air pressure in the test cavity and the air pressure outside the test cavity to obtain the air pressure difference, and outputting the air pressure difference.
Specifically, a power switch of the damping detector is closed, a fan is started, and the fan works to exhaust air to a testing cavity of the damping detector, so that negative pressure is generated in the testing cavity. And the processor controls the fan to run at the target rotating speed. The first air pressure sensor of the damping detector detects air pressure signals in the testing cavity at least when the fan runs at the target rotating speed, and the second air pressure sensor of the damping detector detects air pressure signals outside the testing cavity at least when the fan runs at the target rotating speed. It is understood that the first air pressure sensor and the second air pressure sensor may also detect air pressure signals inside the test chamber and outside the test chamber, respectively, when the blower is operated at other rotational speeds. The first air pressure sensor and the second air pressure sensor respectively transmit air pressure signals in the test cavity and outside the test cavity to the pressure difference meter, and the pressure difference meter obtains air pressure difference by taking air pressure difference between the air pressure in the test cavity and the air pressure outside the test cavity and outputs the air pressure difference.
According to the technical scheme, the air pressure inside the test cavity and the air pressure outside the test cavity are detected respectively at least when the fan runs at the target rotating speed, the air pressure inside the test cavity and the air pressure outside the test cavity are taken as differences to obtain the air pressure difference, and the air pressure difference is output, so that the air pressure difference is used for indicating the damping of the tested filter. Compared with the existing damping detector control method, the damping detector control method disclosed by the invention is simple in operation steps, can realize rapid detection of the filter element, and improves the damping detection efficiency of the filter element.
In another embodiment of the present invention, as shown in fig. 2 to 4, the step of detecting the air pressure inside the test chamber and outside the test chamber respectively specifically includes:
step S21, when the fan runs at a first rotating speed, detecting first air pressure in the test cavity and second air pressure outside the test cavity respectively; when the fan runs at the target rotating speed, detecting the third air pressure in the test cavity and the fourth air pressure outside the test cavity respectively; the first rotational speed is less than the target rotational speed;
the step of obtaining the air pressure difference by taking the air pressure difference between the inside of the test cavity and the outside of the test cavity specifically comprises the following steps:
step S31, when the fan runs at a first rotating speed, the first air pressure and the second air pressure are subjected to difference to obtain a first air pressure difference; when the fan runs at the target rotating speed, the third air pressure and the fourth air pressure are subjected to difference to obtain damping air pressure difference; the first rotational speed is less than the target rotational speed;
the damping detector control method further comprises the following steps:
step S32, comparing whether the first air pressure difference is larger than a preset first reference pressure difference; if yes, it is determined that the filter under test has been installed.
When the fan runs at a first rotating speed, the first air pressure sensor detects a first air pressure signal in the testing cavity, the second air pressure sensor detects a second air pressure signal outside the testing cavity, the first air pressure sensor and the second air pressure sensor respectively transmit the first air pressure signal and the second air pressure signal to the differential pressure gauge, and the differential pressure gauge acquires a first air pressure difference by taking a difference between the first air pressure and the second air pressure. Comparing whether the first air pressure difference is larger than a preset first reference pressure difference or not; if yes, it is determined that the filter under test has been installed. Next, the fan runs at a target rotating speed, the first air pressure sensor detects a third air pressure signal in the test cavity, the second air pressure sensor detects a fourth air pressure signal outside the test cavity, the first air pressure sensor and the second air pressure sensor respectively transmit the third air pressure signal and the fourth air pressure signal to the differential pressure gauge, and the differential pressure gauge takes the difference between the third air pressure and the fourth air pressure to obtain damping air pressure difference. The damping air pressure difference is used for indicating damping of the tested filter.
Before the fan runs according to the target rotating speed, the fan runs at a first rotating speed, the first air pressure sensor detects a first air pressure signal in the test cavity, the second air pressure sensor detects a second air pressure signal outside the test cavity, the first air pressure sensor and the second air pressure sensor respectively transmit the first air pressure signal and the second air pressure signal to the differential pressure gauge, and the differential pressure gauge takes the first air pressure and the second air pressure as a difference to obtain a first air pressure difference. And comparing the first air pressure difference with the first reference pressure difference to judge whether the filter to be tested is installed or not. So set up, can let the damping detector learn whether install the filter under test, if not, the damping detector can remind the user to install the filter under test, avoids the damping detector does idle work.
In still another embodiment of the present invention, as shown in fig. 5, before the step of starting the blower to generate negative pressure in the test chamber and operating the blower at the target rotational speed, the method further includes:
step S00, reading a currently selected filter test mode and a mapping table corresponding to the filter test mode, wherein the mapping table at least comprises the target rotating speed.
The method comprises the steps that a user selects a filter test mode corresponding to a tested filter on an operation interface, and a processor reads the filter test mode selected by the user and a mapping table corresponding to the filter test mode, wherein the mapping table comprises target flow, target rotating speed, product name, upper pressure difference limit, lower pressure difference limit and the like. And the processor controls the fan to run according to the target rotating speed. For products with test histories, selecting a filter test mode corresponding to a tested filter, further selecting a target rotating speed corresponding to the filter test mode, and then controlling the fan to operate according to the target rotating speed without repeatedly adjusting the rotating speed of the fan, so that the detection efficiency is further improved.
In still another embodiment of the present invention, as shown in fig. 6, the step of starting the fan to generate a negative pressure in the test chamber and operating the fan at the target rotation speed specifically includes:
step S01, detecting the current flow of air in the test cavity;
step S02, comparing whether the current flow is larger than a target flow; if yes, the rotating speed of the fan is reduced; if not, the rotating speed of the fan is increased; and when the flow of the air in the test cavity reaches the target flow, the rotating speed of the fan is the target rotating speed.
When testing the filter piece with new specification, because there is no history test information with new specification in the memory in the damping detector, there is no filter piece test mode corresponding to the filter piece with new specification, the damping detector needs to obtain the target rotation speed. The flowmeter detects a current flow signal of the air in the test cavity and transmits the current flow signal to the processor, and the processor compares whether the current flow is larger than a target flow or not; if yes, the rotating speed of the fan is reduced; if not, the rotating speed of the fan is increased; and when the flow rate of the air in the test cavity reaches the target flow rate, the rotating speed of the fan is the target rotating speed, and the target rotating speed is stored in a memory. And the user inputs information such as product name, upper pressure difference limit, lower pressure difference limit and the like, forms a mapping table with the target rotating speed, and establishes a corresponding filter test model.
It can be understood that the rotation speed of the fan can also be manually adjusted to enable the flow of the air in the test cavity to reach the target flow, and when the flow of the air in the test cavity reaches the target flow, the rotation speed of the fan is the target rotation speed and the target rotation speed is stored in the memory. And the user inputs information such as product name, upper pressure difference limit, lower pressure difference limit and the like, forms a mapping table with the target rotating speed, and establishes a corresponding filter test model.
Specifically, the flowmeter detects the flow rate of air in the air pipe which is communicated with the fan and the test cavity so as to determine the current flow rate. So set up, the easy to assemble the flowmeter.
The invention also provides a computer readable medium, which stores a damping detector control program, when the damping detector control program is executed by a processor, the steps of the damping detector control method are realized, and the specific steps of the damping detector control method refer to the above embodiments.
The invention also provides a damping detector, which comprises a fan, a memory and a processor. The memory is stored with a damping detector control program; and when the processor executes the damping detector control program, the steps of the damping detector control method are realized. The specific steps of the control method of the damping detector refer to the above embodiments, and since the damping detector adopts all the technical solutions of all the embodiments, the damping detector has at least all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein. The fan is used for exhausting air to the test cavity of the damping detector.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the claims, and all equivalent structures or equivalent processes using the descriptions and drawings of the present invention are directly or indirectly applied to other related technical fields, which are also included in the scope of the present invention.
Claims (7)
1. A method of controlling a damping detector for detecting damping of a filter, comprising:
starting a fan to generate negative pressure in the test cavity;
detecting the current flow of air in the test cavity;
comparing whether the current flow is greater than a target flow; if yes, the rotating speed of the fan is reduced; if not, the rotating speed of the fan is increased; when the flow of the air in the test cavity reaches the target flow, the rotating speed of the fan is the target rotating speed, and the fan is enabled to operate at the target rotating speed;
detecting air pressure in the test cavity and outside the test cavity respectively at least when the fan runs at a target rotating speed;
and taking the air pressure difference between the air pressure in the test cavity and the air pressure outside the test cavity to obtain the air pressure difference, and outputting the air pressure difference.
2. The method for controlling a damping detector according to claim 1,
the step of detecting the air pressure in the test cavity and the air pressure outside the test cavity respectively specifically comprises the following steps:
when the fan runs at a first rotating speed, detecting first air pressure in the test cavity and second air pressure outside the test cavity respectively; when the fan runs at the target rotating speed, detecting the third air pressure in the test cavity and the fourth air pressure outside the test cavity respectively; the first rotational speed is less than the target rotational speed;
the step of obtaining the air pressure difference by taking the air pressure difference between the inside of the test cavity and the outside of the test cavity specifically comprises the following steps:
when the fan runs at a first rotating speed, the first air pressure and the second air pressure are subjected to difference to obtain a first air pressure difference; when the fan runs at the target rotating speed, the third air pressure and the fourth air pressure are subjected to difference to obtain damping air pressure difference; the first rotational speed is less than the target rotational speed;
the damping detector control method further comprises the following steps:
comparing whether the first air pressure difference is larger than a preset first reference pressure difference or not; if yes, it is determined that the filter under test has been installed.
3. The method of damping detector control according to claim 1 or 2, characterized by further comprising, before the step of starting the blower to generate a negative pressure in the test chamber and operating the blower at a target rotational speed:
and reading a currently selected filter test mode and a mapping table corresponding to the filter test mode, wherein the mapping table at least comprises the target rotating speed.
4. The method of claim 1, wherein the step of detecting the current flow rate of air in the test chamber comprises:
and detecting the flow rate of air in the air pipe communicated with the fan and the test cavity to determine the current flow rate.
5. The method of damping detector control of claim 1, further comprising, prior to the step of activating the blower to create a negative pressure in the test chamber and operating the blower at a target rotational speed:
and reading a currently selected filter test mode and a mapping table corresponding to the filter test mode, wherein the mapping table at least comprises the target flow.
6. A computer readable storage medium, wherein a damping detector control program is stored on the computer readable storage medium, which when executed by a processor, implements the steps of the damping detector control method according to any one of claims 1 to 5.
7. A damping detector for detecting damping of a filter, comprising:
the fan is used for exhausting air to the test cavity of the damping detector;
a memory storing a damping detector control program; and
a processor, when executing the damping detector control program, performs the steps of the damping detector control method according to any one of claims 1-5.
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| CN201711255590.2A CN108007839B (en) | 2017-11-30 | 2017-11-30 | Damping detector control method, computer readable storage medium and damping detector |
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| CN201711255590.2A CN108007839B (en) | 2017-11-30 | 2017-11-30 | Damping detector control method, computer readable storage medium and damping detector |
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| CN115389780B (en) * | 2022-10-28 | 2023-02-14 | 深圳市永联科技股份有限公司 | Application method of wind tunnel testing equipment |
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