CN-121980127-A - Air volume estimation method, device, electronic equipment and storage medium

Abstract

The invention provides an air quantity estimation method, an air quantity estimation device, electronic equipment and a storage medium, wherein the method comprises the steps of obtaining a first rotating speed of a fan; the method comprises the steps of determining a first differential pressure of a fan, determining a first rotating speed which is not smaller than a preset rotating speed threshold value, determining the first differential pressure of the fan, wherein the first differential pressure is a pressure difference value between an inlet side and an outlet side of the fan under the same working condition with the first rotating speed, and estimating the air quantity of the fan based on the first differential pressure, the first rotating speed and a preset fitting formula. The method can realize real-time estimation of the air quantity of the fan by only utilizing two parameters of the pressure difference and the rotating speed of the fan existing in the fan system or easy to acquire without additionally arranging a special air quantity measuring device. The design not only meets the requirement of dynamically monitoring the air quantity of the fan, but also reduces the overall cost of air quantity monitoring.

Inventors

• HUANG SHIZHE
• NIU LIANG
• LEI PENGFEI
• ZONG YI

Assignees

• 广东芬尼电器技术有限公司

Dates

Publication Date

20260505

Application Date

20251215

Claims (10)

1. 1. A method for estimating an air volume, the method comprising: acquiring a first rotating speed of a fan, wherein the first rotating speed is not less than a preset rotating speed threshold value; Determining a first pressure difference of the fan, wherein the first pressure difference is a pressure difference value between an inlet side and an outlet side of the fan under the same working condition with the first rotating speed; And estimating the air quantity of the fan based on the first pressure difference, the first rotating speed and a preset fitting formula.
2. 2. The method of claim 1, wherein the fitting formula comprises: Wherein, the The air quantity of the fan; Is a first pressure differential; is the first rotational speed; To the point of Is the fitting coefficient.
3. 3. The method of claim 1, wherein the fitting formula is obtained by fitting data from a sample data set, the sample data set comprises a sample pressure difference of a fan, a sample rotating speed of the fan and a sample air volume of the fan, which are synchronously acquired, and the sample rotating speed of the fan is not less than the rotating speed threshold.
4. 4. A method according to claim 3, wherein the sample data set is obtained by wind tunnel experiments in the following manner; In the wind tunnel experiment, simulating different external static pressure environments by adjusting static pressure parameters of the wind tunnel, wherein the external static pressure environments are used for representing external resistance to be overcome by a fan; And testing the fans according to each external static pressure environment, and synchronously collecting the sample pressure difference of the fans, the sample rotating speed of the fans and the sample air quantity of the fans under the external static pressure environment in the testing process to obtain a sample data set corresponding to the external static pressure environment.
5. 5. The method according to claim 1, wherein the method further comprises: acquiring a second rotating speed of the fan, wherein the second rotating speed is smaller than the rotating speed threshold; and determining the air quantity of the fan corresponding to the second rotating speed as the designated air quantity.
6. 6. A method according to claim 3, wherein the fitting formula is constructed by: acquiring the sample dataset; Based on the sample data set, performing polynomial regression analysis on the relation among the sample pressure difference of the fan, the sample rotating speed of the fan and the sample air quantity of the fan, and determining the fitting coefficient in the fitting formula to obtain the fitting formula.
7. 7. The method of claim 1, wherein the step of determining a first pressure differential of the blower comprises: acquiring a first pulse frequency of a pulse signal output by a sensor arranged on an inlet side and an outlet side of the fan, wherein the sensor is used for acquiring a pressure difference value between the inlet side and the outlet side in the operation process of the fan; and determining a first pressure difference of the fan corresponding to the first pulse frequency based on the corresponding relation between the pulse frequency and the pressure difference.
8. 8. An air volume estimation device, characterized in that the device comprises: The system comprises a first acquisition module, a second acquisition module and a control module, wherein the first acquisition module is used for acquiring a first rotating speed of a fan, and the first rotating speed is not smaller than a preset rotating speed threshold value; the first determining module is used for determining a first pressure difference of the fan, wherein the first pressure difference is a pressure difference value between an inlet side and an outlet side of the fan under the same working condition with the first rotating speed; And the first estimation module is used for estimating the air quantity of the fan based on the first pressure difference, the first rotating speed and a preset fitting formula.
9. 9. An electronic device comprising a processor and a memory, the memory storing machine-executable instructions executable by the processor, the processor executing the machine-executable instructions to implement the method of estimating air volume of any of claims 1-7.
10. 10. A storage medium storing machine-executable instructions which, when invoked and executed by a processor, cause the processor to implement the method of estimating air volume according to any of claims 1-7.

Description

Air volume estimation method, device, electronic equipment and storage medium Technical Field The present invention relates to the field of data processing technologies, and in particular, to a method and apparatus for estimating air volume, an electronic device, and a storage medium. Background In the heating and ventilation industry, accurate sensing of real-time air quantity of a fan is a core requirement for optimizing energy consumption of a temperature control system and guaranteeing operation stability, and particularly in compact space scenes inside machines such as a precise machine room and an embedded machine set, the requirement is urgent. In the related technology, the air quantity monitoring in the heating and ventilation industry has obvious short plates, most application scenes are for simplifying design and controlling cost, the air quantity is not directly detected, the system cannot be dynamically adjusted according to the actual air quantity, energy consumption waste and operation risks exist, few scenes needing to be monitored generally adopt a scheme of additionally arranging sampling devices such as a differential pressure sensor, an air speed probe and the like at an inlet and an outlet of a fan, not only additional reserved installation space is needed, complicated sampling pipelines are designed, but also the problems of installation and maintenance equipment exist, and the overall cost of the air quantity monitoring is high. Disclosure of Invention Accordingly, the present invention is directed to a method, an apparatus, an electronic device, and a storage medium for estimating air volume, so as to solve the problem that in the prior art, the air volume of a fan cannot be obtained in real time, or the air volume monitoring cost is high due to the dependence on an additional air volume measuring device. In a first aspect, an embodiment of the invention provides an air volume estimation method, which comprises the steps of obtaining a first rotating speed of a fan, determining a first pressure difference of the fan, wherein the first rotating speed is not smaller than a preset rotating speed threshold value, the first pressure difference is a pressure difference between an inlet side and an outlet side of the fan under the same working condition as the first rotating speed, and estimating the air volume of the fan based on the first pressure difference, the first rotating speed and a preset fitting formula. Further, the fitting formula includes: Wherein, the The air quantity of the fan; Is a first pressure differential; is the first rotational speed; To the point of Is the fitting coefficient. Further, the fitting formula is obtained by fitting data through a sample data set, wherein the sample data set comprises a sample pressure difference of a fan, a sample rotating speed of the fan and a sample air quantity of the fan, which are synchronously acquired, and the sample rotating speed of the fan is not less than a rotating speed threshold value. The method comprises the steps of obtaining a sample data set through wind tunnel experiments, simulating different off-board static pressure environments through adjusting static pressure parameters of wind tunnels in the wind tunnel experiments, wherein the off-board static pressure environments are used for representing external resistance to be overcome by a fan, testing the fan according to each off-board static pressure environment, and synchronously collecting sample pressure difference of the fan, sample rotating speed of the fan and sample air quantity of the fan under the off-board static pressure environments in the testing process to obtain the sample data set corresponding to the off-board static pressure environments. Further, the method further comprises the steps of obtaining a second rotating speed of the fan, wherein the second rotating speed is smaller than a preset rotating speed threshold value, and determining the air quantity of the fan corresponding to the second rotating speed as the designated air quantity. The fitting formula is further constructed by acquiring a sample data set, carrying out polynomial regression analysis on the relation among the sample pressure difference of the fan, the sample rotating speed of the fan and the sample air quantity of the fan based on the sample data set, and determining fitting coefficients in the fitting formula to obtain the fitting formula. Further, the step of determining the first pressure difference of the fan comprises the steps of obtaining first pulse frequency of pulse signals output by sensors arranged on the inlet side and the outlet side of the fan, wherein the sensors are used for obtaining pressure difference values of the inlet side and the outlet side in the operation process of the fan, and determining the first pressure difference of the fan corresponding to the first pulse frequency based on the corresponding relation between the pulse frequency and the p