CN113530790B - Control method and device of air compressor and readable storage medium - Google Patents
Control method and device of air compressor and readable storage medium Download PDFInfo
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- CN113530790B CN113530790B CN202110689117.5A CN202110689117A CN113530790B CN 113530790 B CN113530790 B CN 113530790B CN 202110689117 A CN202110689117 A CN 202110689117A CN 113530790 B CN113530790 B CN 113530790B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
Abstract
The invention discloses a control method of an air compressor, which comprises the following steps: acquiring a current main pipe pressure value of the air compression station and a change slope of the current main pipe pressure value of the air compression station; determining control information of an air compressor of the air compression station according to the main pipe pressure value and the change slope of the main pipe pressure value; and controlling an air compressor of the air compression station according to the control information. The invention also discloses a control device of the air compressor and a readable storage medium. The air compressor of the air compression station is controlled through the current main pipe pressure value of the air compression station and the change slope of the main pipe pressure value, the energy-saving space can be prevented from being sacrificed due to repeated adjustment of the control condition of the air compressor, and the energy-saving rate can be improved.
Description
Technical Field
The invention relates to the technical field of air compressors, in particular to a control method and device of an air compressor and a readable storage medium.
Background
The existing air compressor control scheme generally takes the pressure value of a main pipe of an air compressor station as the control condition of the air compressor station. For example, when the pressure value of the main pipe exceeds the preset upper pressure limit value, one air compressor is triggered to be turned off; when the pressure value of the main pipe is smaller than the lower limit value of the preset pressure, an air compressor is triggered to be started. However, under such a control scheme, the trigger condition is too single to adapt to different application scenarios. For example, the sudden increase of the gas consumption causes the pressure value of the main pipe to rapidly drop below the preset lower pressure limit value, and the system does not have time to respond; for another example, when the pressure value of the main pipe is loitering near the preset upper pressure limit value, the switch of the air compressor does not need to be triggered, but when the fluctuation of the pressure of the main pipe is slightly larger than the upper limit pressure, the shutdown of the air compressor is triggered, so that the system frequently triggers the startup and shutdown of the air compressor.
The above scenarios are ubiquitous, and in order to be compatible with these scenarios, adaptation can be performed only by adjusting the upper and lower pressure limits. However, the adaptive adjustment process may take into account factors such as safety margin, and thus, energy saving space may be sacrificed, resulting in a decrease in energy saving rate of the system.
Disclosure of Invention
The invention mainly aims to provide a control method and a control device of an air compressor and a readable storage medium, and aims to solve the problem of improving the energy saving rate of the air compressor in the prior art.
In order to achieve the above object, the present invention provides a control method of an air compressor, comprising the steps of:
acquiring a current main pipe pressure value of the air compression station and a change slope of the current main pipe pressure value of the air compression station;
determining control information of an air compressor of the air compression station according to the pressure value of the main pipe and the change slope of the pressure value of the main pipe;
and controlling an air compressor of the air compression station according to the control information.
Optionally, the step of determining control information of an air compressor of the air compression station according to the main pipe pressure value and the main pipe pressure value change slope includes:
if the pressure value of the main pipe is within a first pressure early warning range and the change slope of the pressure value of the main pipe is larger than a preset deceleration slope, generating a starting control instruction of an air compressor of the air compression station;
if the pressure value of the main pipe is within a second pressure early warning range and the change slope of the pressure value of the main pipe is larger than a preset acceleration slope, generating a shutdown control instruction of the air compressor of the air compression station;
and the first pressure early warning range is smaller than the second pressure early warning range.
Optionally, the step of obtaining a current bus pressure value change slope of the pneumatic station includes:
acquiring at least one historical main pipe pressure value continuous with the main pipe pressure value from a preset database;
and acquiring the current change slope of the pressure value of the main pipe of the air compression station according to the pressure value of the main pipe and the historical pressure value of the main pipe.
Optionally, the step of obtaining a current change slope of the main pipe pressure value of the air compression station according to the main pipe pressure value and the historical main pipe pressure value includes:
acquiring a pressure value change slope of the main pipe corresponding to the pressure value of the main pipe according to the pressure value of the main pipe and a pressure value of the main pipe before the pressure value of the main pipe;
acquiring the change slope of the pressure value of the previous main pipe of the change slope of the pressure value of the main pipe;
and acquiring the current change slope of the pressure value of the main pipe of the air compression station according to the change slope of the pressure value of the main pipe and the change slope of the pressure value of the previous main pipe.
Optionally, the step of obtaining at least one historical mother pipe pressure value continuous with the mother pipe pressure value from a preset database includes:
filtering historical data stored in the preset database to filter invalid data stored in the preset database;
and acquiring the historical main pipe pressure value from the preset database after filtering treatment.
Optionally, the step of filtering the historical data stored in the preset database includes:
searching for overdue data with the storage time exceeding the preset time in the preset database;
and deleting the expired data from the preset database.
Optionally, the step of controlling an air compressor of the air compression station according to the control information includes:
and sending the control information to the air compressor to control the air compressor to execute corresponding operation.
Optionally, if there are multiple air compressors in the air compression station, the step of controlling the air compressors of the air compression station according to the control information includes:
determining the on-off state of the air compressors of the air compression station and the number of the air compressors executing the on-off state according to the control information, wherein the control information comprises the on-off state and the number of the air compressors, and the on-off state comprises on or off;
and controlling the number of air compressors to execute the switch state.
In addition, in order to achieve the above object, the present invention further provides a control device of an air compressor, the control device of an air compressor includes a memory, a processor and a control program of the air compressor, the control program of the air compressor is stored on the processor and can be run on the processor, and the processor implements the steps of the control method of the air compressor when executing the control program of the air compressor.
In addition, to achieve the above object, the present invention further provides a readable storage medium, on which a control program of an air compressor is stored, the control program of the air compressor, when executed by a processor, implementing the steps of the control method of the air compressor as described above.
In the embodiment of the invention, the energy waste caused by the fact that the preset upper and lower pressure limit values cannot adapt to different application scenes or the control conditions of the air compressor of the air compression station need to be adaptively adjusted at the cost of energy-saving space under different application scenes can be avoided by acquiring the current main pipe pressure value and the main pipe pressure value change slope of the air compression station, determining the control information of the air compressor of the air compression station according to the main pipe pressure value and the main pipe pressure value change slope, and then controlling the air compressor of the air compression station to execute corresponding operation according to the control information. That is, when the air compressor of the air compression station is controlled according to the main pipe pressure value and the main pipe pressure value change slope, the air compressor control method can automatically adapt to different application scenes without repeatedly adjusting the air compressor control conditions of the air compression station, and further can effectively improve the energy-saving efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a control device of an air compressor in a hardware operating environment according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a first embodiment of a control method of an air compressor according to the present invention;
fig. 3 is an exemplary schematic diagram for explaining a pressure value of a main pipe of an air compressor station in the control method of an air compressor according to the present invention;
fig. 4 is a schematic flow chart illustrating a control method of an air compressor according to a second embodiment of the present invention;
fig. 5 is a schematic flow chart of a control method of an air compressor according to a third embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the invention is: acquiring a current main pipe pressure value of an air compression station and a change slope of the current main pipe pressure value of the air compression station; determining control information of an air compressor of the air compression station according to the pressure value of the main pipe and the change slope of the pressure value of the main pipe; and controlling an air compressor of the air compression station according to the control information.
The existing air compressor control scheme is that the upper and lower limit values of the pressure of a main pipe are preset as control conditions of the air compressor, however, the preset control conditions cannot adapt to different application scenarios in real time, for example, the pressure value of the main pipe rapidly falls below the lower limit value of the preset pressure due to sudden increase of air consumption, so that technical response cannot be made, or when the pressure value of the main pipe is in a loitering state near the upper limit value of the preset pressure, the air compressor is mistakenly opened, and the like. Therefore, in order to adapt to different application scenarios, it is necessary to adaptively adjust the preset control conditions, however, in the adaptive adjustment process, factors such as a safety margin are considered, and the energy saving rate of the system is reduced at the expense of energy saving space. Therefore, the above solution provided by the embodiment aims to improve the energy saving rate in the control process of the air compressor.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a control device of an air compressor in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the control device of the air compressor may include: a communication bus 1002, a processor 1001, e.g., a CPU, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory such as a disk memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
It will be understood by those skilled in the art that the configuration of the control device of the air compressor shown in fig. 1 does not constitute a limitation of the control device of the air compressor, and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
In the control device of the air compressor shown in fig. 1, the network interface 1004 is mainly used for connecting a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; the processor 1001 may be configured to call the control program of the air compressor stored in the memory 1005, and execute the following steps related to the embodiments of the control method of the air compressor.
The first embodiment of the control method of the air compressor of the present invention is provided based on the control device of the air compressor described above.
It should be noted that the control method of the air compressor provided in this embodiment is applied to the air compressor.
Referring to fig. 2, in this embodiment, the control method of the air compressor includes the following steps:
step S10: acquiring a current main pipe pressure value of an air compression station and a change slope of the current main pipe pressure value of the air compression station;
it should be noted that the air compression station includes at least one air compressor, and the air compression station is provided with a pressure detection device that can be used to detect a main pipe pressure value of the air compression station, and the main pipe pressure value of the air compression station refers to a total pressure value when gas is converged into a gas end by each air compressor of the air compression station, as shown in fig. 3. The pressure detection device may be a pressure sensor (e.g., a piezoresistive pressure sensor, a ceramic pressure sensor, a diffused silicon pressure sensor, a sapphire pressure sensor, a piezoelectric pressure sensor, etc.), or other detection devices integrated with a pressure sensor. Different types of pressure detection devices can be arranged in different application scenarios, and are not particularly limited herein. The pressure detection device in the embodiment is preferably a pressure transmitter, can convert pressure into a pneumatic signal or an electric signal for control, and can also realize signal remote transmission.
One of the pressure values of the main pipe corresponds to the change slope of the pressure value of one of the main pipes. After the current main pipe pressure value of the air compression station is obtained every time, the change slope of the main pipe pressure value corresponding to the current main pipe pressure value can be correspondingly obtained. In a specific application process, at least one main pipe pressure value change slope of the air compression station can be obtained and used for evaluating the current main pipe pressure value change trend of the air compression station, and the main pipe pressure value change trend can be reflected through the main pipe pressure value change slope. That is, the change slope of at least one main pipe pressure value of the air compression station can be used for evaluating the current main pipe pressure value change trend of the air compression station.
Of course, in order to effectively evaluate the current change trend of the pressure value of the main pipe of the air compression station, a change slope of the pressure value of the main pipe corresponding to the current pressure value of the main pipe of the air compression station may be obtained to evaluate the change trend of the current pressure value of the main pipe of the air compression station. In addition, in order to avoid that distorted invalid data influences the accuracy of the evaluation of the change trend of the master pipe pressure value, a master pipe pressure value change slope corresponding to the current master pipe pressure value of the air compression station and at least one historical master pipe pressure value continuous to the master pipe pressure value change slope can be obtained and used for evaluating the change trend of the current master pipe pressure value of the air compression station, so that the effectiveness of the evaluation of the change trend of the current master pipe pressure value of the air compression station is further improved. The determination may in particular be made according to the actual need for energy saving rate of the air compression station.
The manner of obtaining the change slope of the main pipe pressure value corresponding to the current main pipe pressure value may be: acquiring by combining the current mother pipe pressure value and the previously acquired mother pipe pressure value; when at least one continuous historical main pipe pressure value change slope of the main pipe pressure value change slope corresponding to the current main pipe pressure value is obtained, the method specifically includes: the pressure value is directly obtained from the database, or obtained according to at least one historical master pipe pressure value in the database, which is not specifically limited herein.
Step S20: determining control information of an air compressor of the air compression station according to the pressure value of the main pipe and the change slope of the pressure value of the main pipe;
it should be noted that the determined control information may include: the number of the air compressors and the number of the air compressors which need to be opened and closed in the air compression station, and the like.
When the control information of the air compressor is determined according to the pressure value of the main pipe and the change slope of the pressure value of the main pipe, the control information of the air compressor can be determined according to the current pressure value of the main pipe and the change slope of the pressure value of the main pipe. For example, when the current bus pipe pressure value exceeds a preset pressure upper limit value and the current bus pipe pressure value change slope exceeds a preset acceleration slope, a shutdown control instruction of the air compressor of the air compression station can be correspondingly generated; and when the current main pipe pressure value is lower than the preset pressure lower limit value and the current main pipe pressure value change slope exceeds the preset deceleration slope, a starting control instruction of the air compressor of the air compression station can be correspondingly generated.
In one embodiment, in order to improve the effectiveness of air compressor control and adapt to different application scenes, a pressure early warning buffer zone can be preset, and when a main pipe pressure value reaches the pressure early warning buffer zone, whether an air compressor control mechanism of an air compressor station is triggered or not can be judged through the change slope of the current main pipe pressure value, so that the problem that energy is wasted due to untimely response and frequent control of the air compressor is avoided through advanced control of the air compressor. Specifically, the upper and lower pressure limit values and the upper and lower pressure warning limit values can be preset according to actual application requirements. The upper limit pressure value is greater than the upper limit pressure early warning value, and the lower limit pressure early warning value is greater than the lower limit pressure value; the lower limit buffer pressure zone (first pressure early warning range) can be formed by the lower limit pressure early warning value and the lower limit pressure value, the upper limit buffer pressure zone (second pressure early warning range) can be formed by the upper limit pressure value and the upper limit pressure early warning value, and the first pressure early warning range is smaller than the second early warning range. Therefore, when the current pressure value of the main pipe is within the first pressure early warning range, it is indicated that the air consumption provided by the air compressor is possibly too low. In order to eliminate misoperation caused by wandering of the current main pipe pressure value within the first pressure early warning range, further confirmation is required according to the current main pipe pressure value. At this moment, when the change slope of the pressure value of the main pipe is larger than the preset deceleration slope, the pressure value of the main pipe shows a reduction trend, and the air compressor of the air compression station needs to be started to increase the air consumption provided by the air compressor. That is, if the current main pipe pressure value is in the first pressure early warning range and the change slope of the main pipe pressure value is greater than the preset deceleration slope, a start control instruction of the air compressor of the air compression station is generated to control the corresponding air compressor of the air compression station to start. Correspondingly, when the current main pipe pressure value is within the second pressure early warning range, the air consumption of the air compressor is enough, and at the moment, in order to eliminate misoperation caused by the fact that the current main pipe pressure value wanders within the first pressure early warning range, whether the change slope of the main pipe pressure value is larger than the preset acceleration slope or not can be further judged. If the change slope of the pressure value of the main pipe is larger than the preset acceleration slope, the air compressor is shown to be in a growing trend, and at the moment, in order to avoid energy waste, the corresponding air compressor of the air compression station needs to be closed. And then, if the current main pipe pressure value is within the second pressure early warning range and the change slope of the main pipe pressure value is larger than the preset acceleration slope, generating a shutdown control instruction of the air compressor of the air compression station.
In addition, when the current main pipe pressure value of the air compression station is within the first pressure early warning range and the change slope of the main pipe pressure value is larger than the preset deceleration slope, starting and loading prompt information can be correspondingly output so that a user can perform starting and loading confirmation, such as confirming whether the air compressor of the air compression station needs to be started, which air compressors need to be started and the like. And when a starting confirmation instruction fed back by a user is received, a starting control instruction of the air compressor can be generated according to the starting confirmation instruction fed back by the user. Correspondingly, when the current main pipe pressure value of the air compression station is within the second pressure early warning range and the change slope of the current main pipe pressure value of the air compression station is larger than the preset acceleration slope, unloading shutdown prompt information can be correspondingly output so that a user can confirm unloading shutdown, such as whether the air compressor of the air compression station needs to be shut down or not, which air compressors need to be shut down, and the like. Furthermore, when a closing confirmation instruction fed back by a user is received, a closing control instruction of the air compressor can be generated according to the closing confirmation instruction fed back by the user.
In another embodiment, when a plurality of air compressors exist, when the control information of the air compressors is determined according to the current main pipe pressure value and the main pipe pressure value change slope of the air compression station, besides the on-off state information of the air compressors can be determined according to the current main pipe pressure value and the main pipe pressure value change slope of the air compression station, the number of the corresponding air compressors needing to be started or the number of the air compressors needing to be closed can be determined according to the main pipe pressure value change slope. Specifically, the change of the gas consumption is reflected in the change of the pressure value of the main pipe, and the current change slope of the pressure value of the main pipe of the air compression station represents the gas consumption trend of the gas consumption end. When the gas consumption is more, the current change slope of the pressure value of the main pipe of the air compression station is larger. When the gas consumption is smaller, the current main pipe pressure change slope of the air compression station is smaller. The more the air consumption is, the more the air compressors need to be started; the smaller the gas consumption, the more air compressors need to be shut down. Therefore, the mapping relation between the change slope of the pressure value of the main pipe and each air compressor can be pre-established according to the operation parameters of each air compressor, so that the air compressor which needs to be opened or closed corresponding to the change slope of the pressure value of the current main pipe can be determined according to the mapping relation, and the air consumption requirements under different application scenes can be met. The established mapping relationship comprises: when the air compressor of the air compression station needs to be started is determined according to the current main pipe pressure value and the main pipe pressure change slope of the air compression station, the main pipe pressure value change slope is in a mapping relation with the air compressor needing to be started; and when the air compressor of the air compression station needs to be shut down is determined according to the current main pipe pressure value of the air compression station and the change slope of the main pipe pressure value, the change slope of the main pipe pressure value is in a mapping relation with the air compressor needing to be shut down. Furthermore, no matter the air compressor needs to be shut down or started, the air compressor needing to be started or shut down can be quickly determined, so that the control efficiency and effectiveness of the air compressor are improved, and resource waste caused by untimely control or control error is avoided.
Step S30: and controlling an air compressor of the air compression station according to the control information.
Different types of control information can correspondingly control the air compressor to execute different operations. And when the number of the air compressors is different, the corresponding control strategies are different.
When only one air compressor is present at the air compressor station, the control information determined correspondingly may include the on-off state of the air compressor. Thus, the on-off state of the air compressor can be determined according to the control information. When the on-off state of the air compressor is determined to be the state that the air compressor needs to be started according to the control information, the air compressor can be controlled to execute the starting operation; and when the on-off state of the air compressor is determined to be the state needing to be closed according to the control information, controlling the air compressor to execute closing operation.
When a plurality of air compressors exist in the air compression station, the corresponding determined control information may include the on-off states of the air compressors and the number of the air compressors executing the on-off states, and then the number of the air compressors executing the determined on-off states may be controlled according to the determined number of the air compressors. Specifically, when the on-off state of the air compressors is determined to be that the air compressors need to be started according to the control information, the number of the air compressors needing to be started can be further determined according to the control information, and then the corresponding air compressors are controlled to be started according to the determined number of the air compressors; when the on-off state information of the air compressors is determined to be the air compressors needing to be closed according to the control information, the number of the air compressors needing to be closed can be further determined according to the control information, and then the corresponding air compressors are controlled to be opened according to the determined number of the air compressors.
Of course, after the on-off states of the air compressors and the number of the air compressors executing the on-off states are determined according to the control information, prompt information can be output according to the determined on-off states and the number of the air compressors so that a user can confirm whether to control the corresponding air compressors according to the determined on-off states and the number of the air compressors. When feedback information of a user is received, if the feedback information is confirmation information, controlling the corresponding air compressors according to the determined on-off state and the number of the air compressors; if the feedback information is adjustment information, the corresponding air compressor may be controlled according to the adjustment information, which is not specifically limited herein.
According to the embodiment, the current main pipe pressure value and the main pipe pressure value change slope of the air compression station are obtained, the control information of the air compressor of the air compression station is determined according to the obtained main pipe pressure value and the main pipe pressure value change slope, the air compressor of the air compression station is controlled according to the determined control information, the upper pressure limit value and the lower pressure limit value do not need to be adaptively adjusted to adapt to different application scenes at the cost of energy-saving space, and the energy-saving rate can be improved.
A second embodiment of the control method of the air compressor of the present invention is proposed based on the above-described embodiments. Referring to fig. 3, in this embodiment, the control method of the air compressor includes the following steps:
step S11: acquiring a current main pipe pressure value of an air compression station, and acquiring at least one historical main pipe pressure value continuous with the main pipe pressure value from a preset database;
step S12: acquiring the current change slope of the pressure value of the main pipe of the air compression station according to the pressure value of the main pipe and the historical pressure value of the main pipe;
step S20: determining control information of an air compressor of the air compression station according to the pressure value of the main pipe and the change slope of the pressure value of the main pipe;
step S30: and controlling an air compressor of the air compression station according to the control information.
In this embodiment, when the current mother pipe pressure value change slope of the air compression station is obtained, the current mother pipe pressure value of the air compression station and at least one historical mother pipe pressure value continuous to the mother pipe pressure value may be obtained. After the main pipe pressure value of the air compression station is acquired every time, the acquired main pipe pressure value storage value can be preset in the database. Therefore, when the current main pipe pressure value of the air compression station is obtained, at least one historical main pipe pressure value which is stored in advance and is continuous with the current main pipe pressure value can be obtained from the preset database.
When the current mother pipe pressure value change slope of the air compression station is obtained according to the mother pipe pressure value and at least one historical mother pipe pressure value, the current mother pipe pressure value can be obtained from a preset database, and the historical mother pipe pressure value obtained last time, namely the previous mother pipe pressure value of the current mother pipe pressure value; and then acquiring a main pipe pressure value change slope corresponding to the current main pipe pressure value according to the current main pipe pressure value and the previous main pipe pressure value, and taking the main pipe pressure value change slope corresponding to the current main pipe pressure value as the current main pipe pressure value change slope of the air compression station.
In this embodiment, in order to improve the effectiveness of the main pipe pressure value, it is preferable that the latest two consecutive main pipe pressure value change slopes are used for evaluating the current main pipe pressure value change slope of the air compression station. Namely, the change slope of the pressure value of the main pipe corresponding to the current pressure value of the main pipe and the change slope of the pressure value of the previous main pipe are used for evaluating the change slope of the current pressure value of the main pipe of the air compression station. At this time, it may be: when the mean value of the change slope of the pressure value of the main pipe corresponding to the current pressure value of the main pipe and the change slope of the pressure value of the previous main pipe is larger than the preset deceleration slope, determining that the current pressure value of the main pipe of the air compression station is larger than the preset deceleration slope; when the mean value of the change slope of the pressure value of the main pipe corresponding to the current pressure value of the main pipe and the change slope of the pressure value of the previous main pipe is larger than the preset acceleration slope, the current pressure value of the main pipe of the air compression station is considered to be larger than the preset acceleration slope.
In order to avoid the influence of invalid data on the accuracy of judgment when the average value judgment is adopted, in the embodiment, it is preferable to confirm that the current master pipe pressure value of the air compression station is greater than the preset deceleration slope when the change slope of the master pipe pressure value corresponding to the current master pipe pressure value and the change slope of the previous master pipe pressure value are both greater than the preset deceleration slope; when the change slope of the pressure value of the main pipe corresponding to the current pressure value of the main pipe and the change slope of the pressure value of the previous main pipe are both larger than the preset acceleration slope, the current pressure value of the main pipe of the air compression station is considered to be larger than the preset acceleration slope.
The manner of obtaining the change slope of the main pipe pressure value corresponding to the current main pipe pressure value may be: and obtaining the pressure value of the current main pipe and the pressure value of the previous main pipe. Specifically, a pressure difference between the current mother pipe pressure value and the previous mother pipe pressure value may be calculated first, and then the pressure difference is divided by the previous mother pipe pressure value, so as to obtain a mother pipe pressure value change slope corresponding to the current mother pipe pressure value.
The manner of obtaining the change slope of the previous mother pipe pressure value may be: and directly obtaining the data from a preset database. At this time, after the pressure value of the main pipe is obtained each time, calculating the change slope of the pressure value of the main pipe corresponding to the pressure value of the main pipe obtained each time by adopting the above mode, and storing the change slope of the pressure value of the main pipe obtained each time into a preset database; or obtaining the historical master pipe pressure value from a preset database, and calculating according to the historical master pipe pressure value by adopting the above calculation mode. At this time, the acquired pressure value of the main pipe may be stored in the preset database after each time the pressure value of the main pipe is acquired. Of course, the pressure value of the main pipe and the slope of the pressure value of the main pipe which are obtained each time can be stored in the preset database at the same time. At this time, the database for storing the pressure value of the main pipe and the database for storing the change slope of the pressure value of the main pipe can be the same database or different databases, and can be set according to actual requirements, and the specific limitation is not made here.
In addition, in an embodiment, when the historical main pipe pressure value or the historical main pipe pressure value change slope is obtained from the preset database, the historical data stored in the preset database may be filtered to filter invalid data in the preset database, and then after the invalid data is filtered, the historical main pipe pressure value or the historical main pipe pressure value change slope is obtained from the preset database, so that the validity of the obtained main pipe pressure value or the historical main pipe pressure value change slope can be ensured, the reliability of judgment of the air compressor triggering condition can be improved, and misoperation can be avoided.
In addition, in one embodiment, in the process of filtering the historical data in the preset database, not only the abnormal data but also the outdated historical data need to be filtered out in time, so that on one hand, the effectiveness of the stored historical data can be improved; on the other hand, the phenomenon that the timeliness of air compressor control is influenced due to the fact that the reading and storage efficiency of data is influenced by the fact that the stored historical data are too much can be avoided, and further energy waste is caused.
In this embodiment, the current mother pipe pressure value of the air compression station is obtained, and at least one historical mother pipe pressure value continuous with the mother pipe pressure value is obtained from the preset database, so that the current mother pipe pressure value change slope of the air compression station is obtained according to the mother pipe pressure value and the obtained historical mother pipe pressure value, the obtained mother pipe pressure change slope can be ensured to at least include the mother pipe pressure value change slope corresponding to the current mother pipe pressure value, and can include a plurality of mother pipe pressure value change slopes, thus, the validity of the obtained current mother pipe pressure value change slope of the air compression station can be ensured, the current mother pipe pressure value change slope of the air compression station is prevented from being evaluated by the mother pipe pressure value change slope corresponding to the mother pipe pressure value at any moment, and the current mother pipe pressure value change slope of the air compression station cannot be effectively evaluated. Therefore, the current main pipe pressure value change slope of the air compression station is obtained according to the main pipe pressure value and at least one historical main pipe pressure value, the effectiveness of the current main pipe pressure value change slope of the air compression station can be improved, further the effectiveness of air compressor control can be improved, and energy waste caused by misoperation can be avoided.
Based on the above embodiments, a third embodiment of the control method of the air compressor of the present invention is provided.
It should be noted that the control method of the air compressor in this embodiment is applied to the edge server.
Referring to fig. 4, in this embodiment, the control method of the air compressor includes the following steps:
step S10: acquiring a current main pipe pressure value of an air compression station and a change slope of the current main pipe pressure value of the air compression station;
step S20: determining control information of an air compressor of the air compression station according to the pressure value of the main pipe and the change slope of the pressure value of the main pipe;
step S31: and sending the control information to the air compressor to control the air compressor to execute corresponding operation.
Because the edge server has advantages such as real-time, intelligence and data aggregative nature, in this embodiment, accessible edge server and air compression station are interactive to the realization is to the control of the air compressor machine of air compression station. At this moment, the edge server can acquire the current master pipe pressure value of the air compression station and store the current master pipe pressure value in the local database, and then the edge server can read the continuous data of the latest stored current master pipe pressure value in a specified number at regular time and acquire the current master pipe pressure value change slope of the air compression station according to the current master pipe pressure value and the acquired historical master pipe pressure value continuous with the current master pipe pressure value. And then, the control information of the air compressor of the air compression station can be determined according to the pressure value of the main pipe and the change slope of the pressure value of the main pipe. Here, the manner in which the edge server obtains the current change slope of the main pipe pressure value of the air compressor station and the manner in which the control information of the air compressor station is determined according to the main pipe pressure value and the change slope of the main pipe pressure value may refer to the above-mentioned embodiment, and details are not repeated here.
After determining the control information of the air compressor, the edge server may send the determined control information to the air compressor to implement control of the air compressor. For example, when the determined control information is start control information, the air compressor needing to be started can be determined according to the start control information, and a start control instruction is sent to the air compressor needing to be started so as to control the air compressor needing to be started in the air compression station to execute a start operation; when the determined control information is shutdown control information, determining an air compressor needing to be shut down in the air compression station according to the shutdown control information, and sending a shutdown control instruction to the air compressor needing to be shut down so as to control the air compressor needing to be shut down to execute shutdown operation; when the determined control information is alarm prompt control information, the air compressor needing alarm prompt in the air compression station can be determined according to the alarm prompt control information, and an alarm prompt instruction is sent to the air compressor needing alarm prompt so as to control the air compressor needing alarm prompt to output the alarm prompt information.
According to the method and the device, the change slope of the current main pipe pressure value and the main pipe pressure value of the air compression station is obtained through the edge server, and the control information of the air compressor of the air compression station is determined according to the obtained main pipe pressure value and the change slope of the main pipe pressure value, so that the control condition of the air compressor of the air compression station is not required to be adjusted adaptively, and the waste of energy sources caused by the consideration of safety margin or inaccuracy in adjustment in the adjustment process can be avoided; and moreover, the control information is sent to the corresponding air compressor through the edge server so as to control the air compressor, the data processing efficiency can be improved, the response time of the control of the air compressor is shortened, and the waste of energy caused by untimely response is avoided.
In addition, the embodiment of the invention also provides a control device of the air compressor, the control device of the air compressor comprises a memory, a processor and a control program of the air compressor, the control program of the air compressor is stored on the processor and can be operated on the processor, and the steps of the control method of the air compressor are realized when the processor executes the control program of the air compressor.
In addition, an embodiment of the present invention further provides a readable storage medium, where a control program of the air compressor is stored, and when the control program of the air compressor is executed by a processor, the steps of the control method of the air compressor as described above are implemented.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or system that comprises the element.
Step numbers such as S10 and S20 are used herein for the purpose of more clearly and briefly describing the corresponding content, and do not constitute a substantial limitation on the sequence, and those skilled in the art may perform S20 first and then S10 in specific implementations, but these should be within the scope of the present application.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the description of the foregoing embodiments, it is clear to those skilled in the art that the method of the foregoing embodiments may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better implementation. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, a television, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are also included in the scope of the present invention.
Claims (7)
1. A control method of an air compressor is characterized by comprising the following steps:
acquiring a current main pipe pressure value of the air compression station, wherein the current main pipe pressure value is a total pressure value of gas collected into a gas end by each air compressor of the air compression station;
acquiring at least one historical main pipe pressure value continuous with the current main pipe pressure value from a preset database;
dividing the pressure difference value by the previous mother pipe pressure value according to the pressure difference value between the current mother pipe pressure value and the previous mother pipe pressure value to obtain a mother pipe pressure value change slope corresponding to the current mother pipe pressure value;
acquiring the change slope of the pressure value of the previous main pipe of the change slope of the pressure value of the main pipe;
acquiring the current change slope of the pressure value of the main pipe of the air compression station according to the change slope of the pressure value of the main pipe and the change slope of the pressure value of the previous main pipe;
determining control information of an air compressor of the air compression station according to the current main pipe pressure value and the change slope of the current main pipe pressure value of the air compression station;
controlling an air compressor of the air compression station according to the control information;
the determining of the control information of the air compressor of the air compression station according to the current main pipe pressure value and the current main pipe pressure value change slope of the air compression station comprises the following steps:
if the main pipe pressure value is within a first pressure early warning range and the change slope of the current main pipe pressure value of the air compression station is greater than a preset deceleration slope, generating a starting control instruction of the air compressor of the air compression station, wherein when the change slope of the main pipe pressure value corresponding to the current main pipe pressure value and the change slope of the previous main pipe pressure value are both greater than the preset deceleration slope, determining that the change slope of the current main pipe pressure value of the air compression station is greater than the preset deceleration slope;
if the main pipe pressure value is within a second pressure early warning range and the change slope of the current main pipe pressure value of the air compression station is greater than a preset acceleration slope, generating a shutdown control instruction of the air compressor of the air compression station, wherein when the change slope of the main pipe pressure value corresponding to the current main pipe pressure value and the change slope of the previous main pipe pressure value are both greater than the preset acceleration slope, determining that the change slope of the current main pipe pressure value of the air compression station is greater than the preset acceleration slope;
the first pressure early warning range is smaller than the second pressure early warning range; the first pressure early warning range is composed of a lower limit pressure early warning value and a lower limit pressure value, and the lower limit pressure early warning value is larger than the lower limit pressure value; the second pressure early warning range is composed of an upper limit pressure early warning value and an upper limit pressure value, and the upper limit pressure value is larger than the upper limit pressure early warning value.
2. The method for controlling the air compressor according to claim 1, wherein the step of obtaining at least one historical header pressure value that is continuous with the current header pressure value from a preset database includes:
filtering historical data stored in the preset database to filter invalid data stored in the preset database;
and acquiring the historical main pipe pressure value from the preset database after filtering treatment.
3. The control method of the air compressor according to claim 2, wherein the step of filtering the history data stored in the preset database includes:
searching for overdue data with storage time exceeding preset time in the preset database;
and deleting the expired data from the preset database.
4. The method for controlling the air compressor according to claim 1, wherein the step of controlling the air compressor of the air compressor station according to the control information includes:
and sending the control information to the air compressor to control the air compressor to execute corresponding operation.
5. The method of claim 1, wherein if there are multiple air compressors in the air compression station, the step of controlling the air compressors in the air compression station according to the control information comprises:
determining the on-off states of air compressors of the air compression station and the number of the air compressors executing the on-off states according to the control information, wherein the control information comprises the on-off states and the number of the air compressors, and the on-off states comprise on or off states;
and controlling the number of air compressors to execute the switch state.
6. A control device for an air compressor, characterized in that the control device for an air compressor comprises a memory, a processor and a control program for an air compressor stored in the memory and operable on the processor, and the processor implements the steps of the control method for an air compressor according to any one of claims 1 to 5 when executing the control program for an air compressor.
7. Readable storage medium, on which a control program of an air compressor is stored, the control program of the air compressor, when executed by a processor, implementing the steps of the control method of the air compressor according to any one of claims 1 to 5.
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