CN112594208A - Fan flow detection method and system, computer equipment and storage medium - Google Patents
Fan flow detection method and system, computer equipment and storage medium Download PDFInfo
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- 238000004590 computer program Methods 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 5
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/11—Complex mathematical operations for solving equations, e.g. nonlinear equations, general mathematical optimization problems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/18—Complex mathematical operations for evaluating statistical data, e.g. average values, frequency distributions, probability functions, regression analysis
Abstract
The invention discloses a fan flow detection method, a system, computer equipment and a storage medium, which can detect the flow of a fan pipeline in real time in the working process of a fan, monitor and detect a preset acquisition point, send out a warning signal when the flow is higher than a certain range, monitor the state of the fan pipeline in real time, and enable a worker to quickly acquire the fault condition of the fan according to the abnormal flow, so that the worker can determine whether the fan needs to be shut down for maintenance according to the actual condition, thereby ensuring the normal use of the fan, intelligently control the rotating speed of the fan, enable the rotating speed of the fan to have a self-adjusting function, ensure that the rotating speed of the fan is in a relatively stable state, regulate and control the pressure in the pipeline, and ensure the normal flow of the pipeline.
Description
Technical Field
The invention relates to the field of fans, in particular to a fan flow detection method, a fan flow detection system, computer equipment and a storage medium.
Background
When the fan works, the flow of the fan needs to be controlled within a certain range, so that the normal work of the fan is ensured.
However, in the prior art, mostly, the flow is judged by manual collection and calculation, and whether the flow meets the requirements is judged, and then the flow of the system is regulated according to the rotating speed of a non-stop regulating valve or a fan, so that in the prior art, no system detection and intelligent regulation mode is designed for detecting the flow of the fan during operation, and the fan is controlled to work according to abnormal change of the flow, so that the problems of troublesome regulation, no intelligence and labor waste are solved.
Disclosure of Invention
The invention aims to provide a detection method, a system, computer equipment and a storage medium for intelligently detecting and intelligently adjusting fan flow, so as to achieve the purposes of detecting the fan flow in real time, adjusting the fan to work according to flow abnormity, achieving constant flow, simultaneously uploading monitoring data to a cloud end through a logistics network, and feeding back the monitoring data to a user through cloud computing, thereby achieving the purposes of intelligent adjustment and real-time checking.
The technical scheme adopted by the invention is as follows: a fan flow detection method comprises the following steps:
collecting pressure difference data of a preset collecting point and the section area of a section where the preset collecting point is located;
carrying out average calculation according to the pressure difference data within the preset time of the preset acquisition point to obtain the total pressure difference average value within the preset time corresponding to the preset acquisition point;
calculating according to the average total pressure difference value and the section area to obtain a flow monitoring value;
and comparing the flow monitoring value with a preset safety threshold value, and controlling the rotating speed of the fan according to the comparison result.
Further, the preset acquisition points comprise a plurality of position points; the plurality of position points are all positioned on the same cross section;
the pressure difference data of the preset acquisition points and the section area of the section where the preset acquisition points are located are acquired, and the method comprises the following steps:
and collecting the pressure difference data of each position point and the cross section area of the cross section where each preset collecting point is located.
Further, before collecting the pressure difference data of the preset collecting point and the cross-sectional area of the cross section where the preset collecting point is located, the method further comprises the following steps:
randomly collecting pressure difference data of a position point on the same cross section;
judging whether the acquired pressure difference data is a negative value or not, and if so, sending an error signal; if not, acquiring the pressure difference data of the preset acquisition point and the cross section area of the cross section where the preset acquisition point is located.
Further, the average calculation is performed according to the pressure difference data within the preset time of the preset acquisition point to obtain the total pressure difference average value within the preset time corresponding to the preset acquisition point, and the average calculation method includes:
carrying out average calculation according to the pressure difference data of each position point in the preset time to obtain the point pressure difference average value of each position point in the preset time;
and carrying out average calculation according to the average value of the point pressure difference of each position point in the same section in the preset time to obtain the average value of the total pressure difference of the predicted acquisition points in the preset time.
Further, comparing the flow monitoring value with a preset safety threshold value, and controlling the rotating speed of the fan according to the comparison result, the method comprises the following steps:
calculating the deviation value of the flow monitoring value and a preset safety threshold value, wherein the calculation formula is as follows: e (t) r (t) u (t); wherein r (t) is the preset safety threshold; u (t) is the flow monitoring value; e (t) is a deviation value;
under the condition that the deviation value is a positive value, controlling the fan to increase the rotating speed; under the condition that the deviation value is zero, controlling the fan to maintain the rotating speed; and under the condition that the deviation value is a negative value, controlling the fan to reduce the rotating speed.
Further, the flow monitoring value Q is calculated by the following formula:
Q＝V*S；
wherein V is the air flow speed of the section where the preset collection point is located; s is the cross-sectional area of the cross section where the preset acquisition point is located;
when the section area S of the section where the preset acquisition point is located is circular, the calculation formula is as follows:
when the section area S of the section where the preset acquisition point is located is a rectangle, the calculation formula is as follows:
s ═ ab; wherein, a is the side length and b is the height;
the calculation formula of the airflow velocity V of the section where the preset collection point is located is as follows:
Further, still include:
and displaying and storing the total pressure difference average value of the preset acquisition points, the pressure difference data of each position point and the flow monitoring value.
A fan flow detection system, comprising:
the acquisition module is used for acquiring the pressure difference data of the preset acquisition points and the cross section area of the cross section where the preset acquisition points are located;
the first calculation module is used for carrying out average calculation according to the pressure difference data within the preset time of the preset acquisition point to obtain the total pressure difference average value within the preset time corresponding to the preset acquisition point;
the second calculation module is used for calculating according to the total pressure difference average value and the section area to obtain a flow monitoring value;
and the data comparison module is used for comparing the flow monitoring value with a preset safety threshold value and controlling the rotating speed of the fan according to a comparison result.
A computer device comprising a memory storing a computer program and a processor implementing the steps of the method described above when executing the computer program.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method as described above.
The invention has the beneficial effects that: the method comprises the steps of firstly, collecting pressure difference data of a preset collecting point and the section area of a section where the preset collecting point is located; then, carrying out average calculation according to the pressure difference data within the preset time of the preset acquisition point so as to obtain the total pressure difference average value within the preset time corresponding to the preset acquisition point; calculating according to the average total pressure difference value and the section area to obtain a flow monitoring value; finally, comparing the flow monitoring value with a preset safety threshold value, and controlling the rotating speed of the fan according to the comparison result; the flow of the fan pipeline can be detected in real time in the working process of the fan through the arrangement, the preset collection point is monitored and detected, the warning signal is sent out when the flow is higher than a certain range, the state of the fan pipeline is monitored in real time, and workers can quickly acquire the fault condition of the fan according to the abnormal flow, so that whether the fan needs to be shut down for maintenance or not can be determined according to the actual condition, the normal use of the fan is ensured, the rotating speed of the fan is intelligently controlled, the rotating speed of the fan has a self-adjusting function, the rotating speed of the fan is ensured to be in a relatively stable state, the pressure in the pipeline is regulated and controlled, and the normal flow of the pipeline is ensured; the constant flow is achieved, meanwhile, the monitoring data are uploaded to the cloud end through the logistics network, and are fed back to the user through cloud computing, so that the effects of intelligent adjustment and real-time checking are achieved.
Drawings
FIG. 1 is a schematic flow chart of a fan noise detection monitoring method according to the present invention;
FIG. 2 is a block diagram of a fan noise detection monitoring system according to the present invention;
fig. 3 is an internal structural diagram of a computer device in an embodiment of the present invention.
10, an acquisition module; 20. a first calculation module; 30. a second calculation module; 40. and a data comparison module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
As shown in fig. 1, the invention provides a fan flow detection method, which includes the following steps:
200, carrying out average calculation according to pressure difference data within preset time of a preset acquisition point to obtain a total pressure difference average value within the preset time corresponding to the preset acquisition point;
and step 400, comparing the flow monitoring value with a preset safety threshold value, and controlling the rotating speed of the fan according to the comparison result.
Specifically, the method comprises the steps of firstly collecting differential pressure data of a preset collecting point and collecting the section area of a section where the preset collecting point is located, such as the area of a ventilating duct; then, carrying out average calculation according to the pressure difference data within the preset time of the preset acquisition point so as to obtain the total pressure difference average value within the preset time corresponding to the preset acquisition point; calculating according to the average total pressure difference value and the section area to obtain a flow monitoring value; finally, comparing the flow monitoring value with a preset safety threshold value, and controlling the rotating speed of the fan according to the comparison result; can be in the flow of fan pipeline of real-time detection in fan working process through the aforesaid setting, with this to monitoring detection to predetermineeing the collection point, under the condition that the flow is higher than certain limit, send alarm signal, with the state of this real-time supervision fan pipeline, let the staff be unusual according to the flow, thereby can acquire fan trouble condition fast, make it can decide whether need shut down the maintenance according to actual conditions, thereby guarantee fan normal use, and with this realization intelligent control fan rotational speed, make the fan rotational speed have self-regulating function, the rotational speed of having guaranteed the fan is in relatively stable state, thereby regulate and control the pressure in the pipeline, and guarantee that the pipeline flow is normal.
This application is through differential pressure measuring device (differential pressure meter), the pressure time that detects out, then transmit 5G logistics network through differential pressure sensor, give PLC program control with the signal transmission by the logistics network, other data that need calculate through the input in PLC this moment, through the operation analysis, obtain the flow monitoring value, then compare flow value and set flow threshold value, when the flow value of calculation is less than or is higher than set flow threshold value, the system carries out PI, PD, PID operation, and transmit the operation result to control system, control system comes the rotational speed that comes the gradual adjustment fan according to the operation result, until reaching the requirement of the amount of wind, with this realization intelligent monitoring, and the effect of intelligent regulation fan.
Further, the preset acquisition points comprise a plurality of position points; the plurality of position points are all positioned on the same cross section;
the pressure difference data of the preset acquisition points and the section area of the section where the preset acquisition points are located are acquired, and the method comprises the following steps:
and collecting the pressure difference data of each position point and the cross section area of the cross section where each preset collecting point is located.
Specifically, the preset acquisition point may include a plurality of position points, each position point needs to acquire data independently, and the position points are located on the same cross section, and because the acquired signal is a transient value and changes all the time, pressure difference data needs to be acquired continuously, and the acquisition time can be set to be once every 5 s; the acquisition time can be set automatically according to actual needs, so that the invention has the characteristics of convenience and flexibility.
Further, before collecting the pressure difference data of the preset collecting point and the cross-sectional area of the cross section where the preset collecting point is located, the method further comprises the following steps:
randomly collecting pressure difference data of a position point on the same cross section;
judging whether the acquired pressure difference data is a negative value or not, and if so, sending an error signal; if not, acquiring the pressure difference data of the preset acquisition point and the cross section area of the cross section where the preset acquisition point is located.
Specifically, before collecting pressure difference data of a position point, the data collected by a pressure difference sensor needs to be tested to obtain pressure test data, and the collected pressure difference data of the position point is ensured to be a positive value; in the method, AND gate calculation is carried out through pressure test data and zero values, and the step of collecting pressure difference data of each position point and the section area of the section where each preset collecting point is located is executed under the condition that the pressure test data of the position point is a positive value; in the event of a negative value in the pressure test data of the acquired location point, an error signal is emitted.
Meanwhile, pressure test data of the position points of each section are independently transmitted and respectively subjected to AND gate calculation, an error signal is sent out when the pressure test data have negative values, the error signal contains position information of the corresponding position points with the negative values, and therefore the preset acquisition points can be quickly positioned, and workers can quickly know the corresponding preset acquisition points and adjust the installation interfaces of the corresponding pressure sensors or differential pressure sensors.
Further, the average calculation is performed according to the pressure difference data within the preset time of the preset acquisition point to obtain the total pressure difference average value within the preset time corresponding to the preset acquisition point, and the average calculation method includes:
carrying out average calculation according to the pressure difference data of each position point in the preset time to obtain the point pressure difference average value of each position point in the preset time;
and carrying out average calculation according to the average value of the point pressure difference of each position point in the same section in the preset time to obtain the average value of the total pressure difference of the predicted acquisition points in the preset time.
In particular, the present invention relates to a method for producing,
the pressure difference data of each position point in the preset acquisition point needs to be averaged to obtain the average value of the point pressure difference. Because the data collected at all the position points are transient values, the data at each position point are collected within a specified period of time, and can be set to be collected once every 5 seconds and then calculated to obtain the average value of each pressure difference data and the point pressure difference average value within the period of time; and then, averaging the point pressure difference average values of all the position points of the same section again to obtain a total pressure difference average value, finally, participating the group of data in PI, PD and PID operation to obtain a flow monitoring value, comparing the flow monitoring value with a parameter (a preset safety threshold value) preset by a system, and then transmitting the comparison result to a program to adjust the rotating speed of the fan.
The data are continuously refreshed, the data acquired each time can be transmitted to a program through a logistics network for calculation in a specified time, comparison is carried out according to calculation results, and then intelligent adjustment is carried out on the fan through comparison results until the flow tends to be stable.
Further, comparing the flow monitoring value with a preset safety threshold value, and controlling the rotating speed of the fan according to the comparison result, the method comprises the following steps:
calculating the deviation value of the flow monitoring value and a preset safety threshold value, wherein the calculation formula is as follows: e (t) r (t) u (t); wherein r (t) is the preset safety threshold; u (t) is the flow monitoring value; e (t) is a deviation value;
under the condition that the deviation value is a positive value, controlling the fan to increase the rotating speed; under the condition that the deviation value is zero, controlling the fan to maintain the rotating speed; and under the condition that the deviation value is a negative value, controlling the fan to reduce the rotating speed.
Specifically, after a flow monitoring value of a cross section is obtained, the flow monitoring value is compared with a preset safety threshold value, a deviation value of the flow monitoring value and the preset safety threshold value is obtained according to a deviation value calculation formula, the rotating speed of the fan is controlled to be increased under the condition that the deviation value is a positive value, namely the flow monitoring value is smaller than the preset safety threshold value, the rotating speed of the fan is controlled to be unchanged under the condition that the deviation value is a zero value, namely the flow monitoring value is equal to the preset safety threshold value, the rotating speed of the fan is controlled to be reduced under the condition that the deviation value is a negative value, namely the flow monitoring value is larger than the preset safety threshold value, the rotating speed of the fan is gradually adjusted according to a comparison result, pressure and flow are regulated until the flow requirement of the preset safety threshold value is met, and an intelligent adjusting function of the fan is achieved.
Further, the flow monitoring value Q is calculated by the following formula:
Q＝V*S；
wherein V is the air flow speed of the section where the preset collection point is located; s is the cross-sectional area of the cross section where the preset acquisition point is located;
when the section area S of the section where the preset acquisition point is located is circular, the calculation formula is as follows:
when the section area S of the section where the preset acquisition point is located is a rectangle, the calculation formula is as follows:
s ═ ab; wherein, a is the side length and b is the height;
the calculation formula of the airflow velocity V of the section where the preset collection point is located is as follows:
Specifically, in the calculation process, the cross-sectional area of the cross section where the preset collection point is located needs to be input, then the airflow speed value of the point is calculated according to the average total pressure difference value measured by the same cross section, and then the flow monitoring value is calculated.
Further, still include:
and displaying and storing the total pressure difference average value of the preset acquisition points, the pressure difference data of each position point and the flow monitoring value.
Particularly, the corresponding position points of the acquired negative values can be displayed through the display screen, so that the working personnel can conveniently carry out targeted inspection, maintenance, adjustment and other work on the differential pressure sensor or the installation interface of the pressure sensor, and the working efficiency is greatly improved; and an operation curve formed by multiple times of pressure difference data of all position points can be displayed on the display screen in real time, so that the real-time pressure borne by the fan can be checked and judged.
Under the condition that the fan operates, real-time pressure difference data, point pressure difference average values, total pressure difference average values and flow monitoring values of all position points can be checked at any time through a display screen, and data in 30 days in history can also be checked; in addition, all data during the operation of the fan can be transmitted to a cloud database through an logistics network, storage, calculation and analysis are carried out at the cloud, analysis results are returned and transmitted to a user, and functions of permanently storing user operation data, checking at any time and the like are guaranteed.
It should be understood that, although the steps in the flowchart of fig. 1 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in fig. 1 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
As shown in fig. 2, the present application further provides a fan flow detection system, including:
the acquisition module 10 is used for acquiring the pressure difference data of a preset acquisition point and the cross section area of the cross section where the preset acquisition point is located;
the first calculation module 20 is configured to perform average calculation according to pressure difference data of a preset acquisition point within a preset time to obtain a total pressure difference average value of the preset acquisition point within a corresponding preset time;
the second calculating module 30 is configured to calculate according to the average total pressure difference and the cross-sectional area to obtain a flow monitoring value;
and the data comparison module 40 is used for comparing the flow monitoring value with a preset safety threshold value and controlling the rotating speed of the fan according to the comparison result.
For specific limitations of the fan flow detection system, reference may be made to the above limitations of the fan flow detection method, which is not described herein again. All modules of the fan flow detection system can be completely or partially realized through software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a server, the internal structure of which may be as shown in fig. 3. The computer device includes a processor, a memory, a network interface, and a database 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 comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a method of fan flow detection.
Those skilled in the art will appreciate that the architecture shown in fig. 3 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program: collecting pressure difference data of a preset collecting point and the section area of a section where the preset collecting point is located; carrying out average calculation according to the pressure difference data within the preset time of the preset acquisition point to obtain the total pressure difference average value within the preset time corresponding to the preset acquisition point; calculating according to the average total pressure difference value and the section area to obtain a flow monitoring value; and comparing the flow monitoring value with a preset safety threshold value, and controlling the rotating speed of the fan according to the comparison result.
In one embodiment, the preset acquisition points comprise a number of location points; the plurality of position points are all positioned on the same cross section;
the pressure difference data of the preset acquisition points and the section area of the section where the preset acquisition points are located are acquired, and the method comprises the following steps:
and collecting the pressure difference data of each position point and the cross section area of the cross section where each preset collecting point is located.
In one embodiment, before collecting the pressure difference data of the preset collection point and the cross-sectional area of the cross section where the preset collection point is located, the method further comprises the following steps:
randomly collecting pressure difference data of a position point on the same cross section;
judging whether the acquired pressure difference data is a negative value or not, and if so, sending an error signal; if not, acquiring the pressure difference data of the preset acquisition point and the cross section area of the cross section where the preset acquisition point is located.
In one embodiment, the performing an average calculation according to the pressure difference data within the preset time of the preset acquisition point to obtain a total pressure difference average value within the preset time corresponding to the preset acquisition point includes:
carrying out average calculation according to the pressure difference data of each position point in the preset time to obtain the point pressure difference average value of each position point in the preset time;
and carrying out average calculation according to the average value of the point pressure difference of each position point in the same section in the preset time to obtain the average value of the total pressure difference of the predicted acquisition points in the preset time.
In one embodiment, the comparing the flow monitoring value with the preset safety threshold and controlling the rotation speed of the fan according to the comparison result includes:
calculating the deviation value of the flow monitoring value and a preset safety threshold value, wherein the calculation formula is as follows: e (t) r (t) u (t); wherein r (t) is the preset safety threshold; u (t) is the flow monitoring value; e (t) is a deviation value;
under the condition that the deviation value is a positive value, controlling the fan to increase the rotating speed; under the condition that the deviation value is zero, controlling the fan to maintain the rotating speed; and under the condition that the deviation value is a negative value, controlling the fan to reduce the rotating speed.
In one embodiment, the flow rate monitoring value Q is calculated by the formula:
Q＝V*S；
wherein V is the air flow speed of the section where the preset collection point is located; s is the cross-sectional area of the cross section where the preset acquisition point is located;
when the section area S of the section where the preset acquisition point is located is circular, the calculation formula is as follows:
when the section area S of the section where the preset acquisition point is located is a rectangle, the calculation formula is as follows:
s ═ ab; wherein, a is the side length and b is the height;
the calculation formula of the airflow velocity V of the section where the preset collection point is located is as follows:
In one embodiment, further comprising:
and displaying and storing the total pressure difference average value of the preset acquisition points, the pressure difference data of each position point and the flow monitoring value.
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: collecting pressure difference data of a preset collecting point and the section area of a section where the preset collecting point is located; carrying out average calculation according to the pressure difference data within the preset time of the preset acquisition point to obtain the total pressure difference average value within the preset time corresponding to the preset acquisition point; calculating according to the average total pressure difference value and the section area to obtain a flow monitoring value; and comparing the flow monitoring value with a preset safety threshold value, and controlling the rotating speed of the fan according to the comparison result.
In one embodiment, the preset acquisition points comprise a number of location points; the plurality of position points are all positioned on the same cross section;
the pressure difference data of the preset acquisition points and the section area of the section where the preset acquisition points are located are acquired, and the method comprises the following steps:
and collecting the pressure difference data of each position point and the cross section area of the cross section where each preset collecting point is located.
In one embodiment, before collecting the pressure difference data of the preset collection point and the cross-sectional area of the cross section where the preset collection point is located, the method further comprises the following steps:
randomly collecting pressure difference data of a position point on the same cross section;
judging whether the acquired pressure difference data is a negative value or not, and if so, sending an error signal; if not, acquiring the pressure difference data of the preset acquisition point and the cross section area of the cross section where the preset acquisition point is located.
In one embodiment, the performing an average calculation according to the pressure difference data within the preset time of the preset acquisition point to obtain a total pressure difference average value within the preset time corresponding to the preset acquisition point includes:
carrying out average calculation according to the pressure difference data of each position point in the preset time to obtain the point pressure difference average value of each position point in the preset time;
and carrying out average calculation according to the average value of the point pressure difference of each position point in the same section in the preset time to obtain the average value of the total pressure difference of the predicted acquisition points in the preset time.
In one embodiment, the comparing the flow monitoring value with the preset safety threshold and controlling the rotation speed of the fan according to the comparison result includes:
calculating the deviation value of the flow monitoring value and a preset safety threshold value, wherein the calculation formula is as follows: e (t) r (t) u (t); wherein r (t) is the preset safety threshold; u (t) is the flow monitoring value; e (t) is a deviation value;
under the condition that the deviation value is a positive value, controlling the fan to increase the rotating speed; under the condition that the deviation value is zero, controlling the fan to maintain the rotating speed; and under the condition that the deviation value is a negative value, controlling the fan to reduce the rotating speed.
In one embodiment, the flow rate monitoring value Q is calculated by the formula:
Q＝V*S；
wherein V is the air flow speed of the section where the preset collection point is located; s is the cross-sectional area of the cross section where the preset acquisition point is located;
when the section area S of the section where the preset acquisition point is located is circular, the calculation formula is as follows:
when the section area S of the section where the preset acquisition point is located is a rectangle, the calculation formula is as follows:
s ═ ab; wherein, a is the side length and b is the height;
the calculation formula of the airflow velocity V of the section where the preset collection point is located is as follows:
In one embodiment, further comprising:
and displaying and storing the total pressure difference average value of the preset acquisition points, the pressure difference data of each position point and the flow monitoring value.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above description is only a preferred embodiment of the present invention, the present invention is not limited to the above embodiment, and there may be some slight structural changes in the implementation, and if there are various changes or modifications to the present invention without departing from the spirit and scope of the present invention, and within the claims and equivalent technical scope of the present invention, the present invention is also intended to include those changes and modifications.
Claims (10)
1. A fan flow detection method is characterized by comprising the following steps:
collecting pressure difference data of a preset collecting point and the section area of a section where the preset collecting point is located;
carrying out average calculation according to the pressure difference data within the preset time of the preset acquisition point to obtain the total pressure difference average value within the preset time corresponding to the preset acquisition point;
calculating according to the average total pressure difference value and the section area to obtain a flow monitoring value;
and comparing the flow monitoring value with a preset safety threshold value, and controlling the rotating speed of the fan according to the comparison result.
2. The fan flow detection method according to claim 1, characterized in that: the preset acquisition points comprise a plurality of position points; the plurality of position points are all positioned on the same cross section;
the pressure difference data of the preset acquisition points and the section area of the section where the preset acquisition points are located are acquired, and the method comprises the following steps:
and collecting the pressure difference data of each position point and the cross section area of the cross section where each preset collecting point is located.
3. The fan flow detection method according to claim 2, before collecting the differential pressure data of the preset collection point and the cross-sectional area of the cross section where the preset collection point is located, further comprising:
randomly collecting pressure difference data of a position point on the same cross section;
judging whether the acquired pressure difference data is a negative value or not, and if so, sending an error signal; if not, acquiring the pressure difference data of the preset acquisition point and the cross section area of the cross section where the preset acquisition point is located.
4. The fan flow detection method according to claim 2, wherein the average calculation is performed according to the pressure difference data within the preset time of the preset collection point to obtain the total pressure difference average value within the preset time corresponding to the preset collection point, and the method comprises the following steps:
carrying out average calculation according to the pressure difference data of each position point in the preset time to obtain the point pressure difference average value of each position point in the preset time;
and carrying out average calculation according to the average value of the point pressure difference of each position point in the same section in the preset time to obtain the average value of the total pressure difference of the predicted acquisition points in the preset time.
5. The fan flow detection method according to claim 1, wherein the comparing the flow monitoring value with a preset safety threshold value and controlling the rotation speed of the fan according to the comparison result comprises:
calculating the deviation value of the flow monitoring value and a preset safety threshold value, wherein the calculation formula is as follows: e (t) r (t) u (t); wherein r (t) is the preset safety threshold; u (t) is the flow monitoring value; e (t) is a deviation value;
under the condition that the deviation value is a positive value, controlling the fan to increase the rotating speed; under the condition that the deviation value is zero, controlling the fan to maintain the rotating speed; and under the condition that the deviation value is a negative value, controlling the fan to reduce the rotating speed.
6. The fan flow detection method according to claim 1, wherein the flow monitoring value Q is calculated by the formula:
Q＝V*S；
wherein V is the air flow speed of the section where the preset collection point is located; s is the cross-sectional area of the cross section where the preset acquisition point is located;
when the section area S of the section where the preset acquisition point is located is circular, the calculation formula is as follows:
when the section area S of the section where the preset acquisition point is located is a rectangle, the calculation formula is as follows:
s ═ ab; wherein, a is the side length and b is the height;
the calculation formula of the airflow velocity V of the section where the preset collection point is located is as follows:
7. The fan flow detection method of claim 2, further comprising:
and displaying and storing the total pressure difference average value of the preset acquisition points, the pressure difference data of each position point and the flow monitoring value.
8. A fan flow detection system, comprising:
the acquisition module is used for acquiring the pressure difference data of the preset acquisition points and the cross section area of the cross section where the preset acquisition points are located;
the first calculation module is used for carrying out average calculation according to the pressure difference data within the preset time of the preset acquisition point to obtain the total pressure difference average value within the preset time corresponding to the preset acquisition point;
the second calculation module is used for calculating according to the total pressure difference average value and the section area to obtain a flow monitoring value;
and the data comparison module is used for comparing the flow monitoring value with a preset safety threshold value and controlling the rotating speed of the fan according to a comparison result.
9. A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the steps of the method of any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0682282A (en) * | 1992-08-31 | 1994-03-22 | Tokyo Gas Co Ltd | Measuring equipment for flow rate |
| CN1512075A (en) * | 2002-12-30 | 2004-07-14 | 财团法人工业技术研究院 | Feedback control method and device for air valume of fan-filter unit |
| CN204943800U (en) * | 2015-07-22 | 2016-01-06 | 苏州医电神空调设备工程有限公司 | Blower fan permanent wind amount control system |
| CN106441962A (en) * | 2016-08-30 | 2017-02-22 | 上海发电设备成套设计研究院 | Method for real-time monitoring of performance of fan of boiler in power station |
| CN207849673U (en) * | 2017-11-28 | 2018-09-11 | 山西彩云归科技有限公司 | The fresh air system of adjusting air inlet amount |
| CN112253522A (en) * | 2020-11-12 | 2021-01-22 | 重庆建安仪器有限责任公司 | Air volume control method |
-
2020
- 2020-12-07 CN CN202011436264.3A patent/CN112594208A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0682282A (en) * | 1992-08-31 | 1994-03-22 | Tokyo Gas Co Ltd | Measuring equipment for flow rate |
| CN1512075A (en) * | 2002-12-30 | 2004-07-14 | 财团法人工业技术研究院 | Feedback control method and device for air valume of fan-filter unit |
| CN204943800U (en) * | 2015-07-22 | 2016-01-06 | 苏州医电神空调设备工程有限公司 | Blower fan permanent wind amount control system |
| CN106441962A (en) * | 2016-08-30 | 2017-02-22 | 上海发电设备成套设计研究院 | Method for real-time monitoring of performance of fan of boiler in power station |
| CN207849673U (en) * | 2017-11-28 | 2018-09-11 | 山西彩云归科技有限公司 | The fresh air system of adjusting air inlet amount |
| CN112253522A (en) * | 2020-11-12 | 2021-01-22 | 重庆建安仪器有限责任公司 | Air volume control method |
Non-Patent Citations (1)
| Title |
|---|
| 唐俊锐等: "大型通风机流量和压力测量方法的应用", 《风机技术》 * |
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