CN110397582B - Self-correction method and device for air compressor - Google Patents
Self-correction method and device for air compressor Download PDFInfo
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- CN110397582B CN110397582B CN201910618074.4A CN201910618074A CN110397582B CN 110397582 B CN110397582 B CN 110397582B CN 201910618074 A CN201910618074 A CN 201910618074A CN 110397582 B CN110397582 B CN 110397582B
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- air compressor
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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
- F04B49/065—Control using electricity and making use of computers
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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
- F04B49/08—Regulating by delivery 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
- F04B51/00—Testing machines, pumps, or pumping installations
Abstract
The embodiment of the invention discloses a self-correction method and a self-correction device of an air compressor, wherein the air compressor comprises a motor and a pressure regulating screw rod; the motor drives the pressure regulating screw to move to realize voltage regulation; the method comprises the following steps that during the working process of the air compressor, the accumulated working time of a motor in the corresponding rotating direction corresponding to an expected output pressure value is obtained according to a preset mapping relation; controlling the motor according to the accumulated working time to adjust the air pressure to an expected output pressure value; the method comprises the following steps: using the pneumatic tool for multiple times and respectively acquiring working data of the air compressor after using the pneumatic tool each time; the working data includes: when the pneumatic tool is used again, the output pressure value of the air compressor and the accumulated working time of the corresponding motor are obtained; and correcting the preset mapping relation according to the obtained multiple groups of working data. By the scheme of the embodiment, inaccuracy of a software pressure regulating control scheme caused by factors such as error accumulation, system aging and the like is avoided, and the air pressure regulating precision is ensured.
Description
Technical Field
The embodiment of the invention relates to the control technology of an air compressor, in particular to a self-correcting method and a self-correcting device of the air compressor.
Background
The current small-size air compressor machine generally adopts the barometer to carry out the affirmation and the regulation of atmospheric pressure with the mode of knob, also is to these two points when adopting digital transformation, adopts pressure sensor to obtain current atmospheric pressure promptly to show the sample value on the screen, adjust then to adopt the motor to replace the knob. Such systems (whether or not the above-described digital modifications are made) present several significant problems in practical use: 1. the pressure display is inaccurate, particularly inaccurate in the use process, the pressure value of the contact surface is reduced when the gas flows, so that the acquired value is obviously reduced when the pressure display is used, namely the pressure meter or the pressure sensor. 2. The accurate position can not be adjusted, the condition that the adjustment is not in place or the adjustment is over-head can occur due to the individual difference or aging of the pressure adjusting spring and the aging of the sealing element, and under the condition, the measured air pressure has obvious difference before and after the air pressure tool is used.
In view of the above problems, although a method for performing voltage regulation control by software is currently available, the software voltage regulation control scheme gradually becomes inaccurate as calculation errors accumulate and the system ages.
Disclosure of Invention
The embodiment of the invention provides a self-correction method and a self-correction device for an air compressor, which can avoid inaccuracy of a software pressure regulation control scheme caused by factors such as error accumulation, system aging and the like, and ensure the air pressure regulation precision.
In order to achieve the purpose of the embodiment of the invention, the embodiment of the invention provides a self-correcting method of an air compressor, wherein the air compressor can comprise a motor and a pressure regulating screw rod connected with the motor; the motor drives the pressure regulating screw to move to realize voltage regulation; the method comprises the following steps that the accumulated working time of a motor corresponding to an expected output pressure value in a corresponding rotating direction is obtained by the air compressor according to a preset mapping relation in the working process; controlling the motor according to the accumulated working time to adjust the air pressure to the expected output pressure value; the method may include:
using the pneumatic tool for multiple times and respectively acquiring working data of the air compressor after using the pneumatic tool each time; the working data includes: when the pneumatic tool is used again, the output pressure value of the air compressor and the accumulated working time of the corresponding motor are obtained;
and correcting the preset mapping relation according to the obtained multiple groups of working data.
In an exemplary embodiment of the present invention, the multi-use pneumatic tool may include: the air compressor is characterized in that the air compressor is provided with a disposable pneumatic tool, the disposable pneumatic tool is used for adjusting air pressure after the disposable pneumatic tool is used, and the pneumatic tool is reused according to the adjusted air pressure.
In an exemplary embodiment of the invention, the arbitrary one-time-use pneumatic tool is labeled as a first-time-use pneumatic tool; marking the re-use pneumatic tool according to the adjusted air pressure as a second use pneumatic tool;
the respectively acquiring the working data of the air compressor after the pneumatic tool is used each time may include:
after the pneumatic tool is used for the first time, acquiring a current first output pressure value of an air compressor and a current first accumulated working time length of the motor as a first group of working data;
and after the second time of using the pneumatic tool is detected to be finished, acquiring a current second output pressure value of the air compressor and a current second accumulated working time of the motor as a second group of working data.
In an exemplary embodiment of the present invention, the correcting the preset mapping relation according to the obtained multiple sets of working data may include: and correcting the mapping coefficients of the preset mapping relation according to the obtained multiple groups of working data.
In an exemplary embodiment of the present invention, the correcting the mapping coefficients of the preset mapping relation according to the obtained plurality of sets of working data may include:
substituting the multiple groups of working data into a preset mapping relation containing unknown mapping coefficients, and calculating the numerical values of the mapping coefficients;
and updating the numerical value of the original mapping coefficient in the preset mapping relation by using the calculated numerical value of the mapping coefficient, so as to realize the correction of the mapping coefficient of the preset mapping relation.
In an exemplary embodiment of the present invention, the correcting the mapping coefficients of the preset mapping relation according to the obtained multiple sets of working data may further include:
substituting the multiple groups of working data into a preset mapping relation containing unknown mapping coefficients, and calculating the numerical values of the mapping coefficients;
calculating the calculated numerical value of each mapping coefficient and the numerical value of the original mapping coefficient corresponding to the calculated numerical value of the mapping coefficient according to a preset weight value to obtain the final numerical value of the mapping coefficient;
and updating the value of the original mapping coefficient in the preset mapping relation according to the calculated final value of each mapping coefficient, so as to realize the correction of the mapping coefficient in the preset mapping relation.
In an exemplary embodiment of the present invention, the calculated weight of the value of the mapping coefficient may include: 10% -30%;
the weight occupied by the value of the original mapping coefficient may include: 70 to 90 percent.
In an exemplary embodiment of the present invention, the air compressor further includes a pressure sensor for detecting an output pressure value of the air compressor;
the method may further comprise: the parameters of the pressure sensor are calibrated in advance.
In an exemplary embodiment of the present invention, the calibrating the parameter of the pressure sensor may include: respectively controlling the output air pressures of a plurality of standard pressure air sources with different output pressures, and correspondingly collecting the pressure values of the plurality of output air pressures through the pressure sensor; calculating correction parameters of the pressure sensor according to the pressure values of the output air pressures and a preset calculation formula;
wherein, the output air pressures of the plurality of standard pressure air sources are respectively positioned in different pressure areas.
In order to achieve the object of the embodiment of the present invention, an embodiment of the present invention further provides a self-leveling device for an air compressor, including a processor and a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed by the processor, the self-leveling device for an air compressor implements any one of the above self-leveling methods for an air compressor.
The beneficial effects of the embodiment of the invention can include:
the air compressor provided by the embodiment of the invention can comprise a motor and a pressure regulating screw rod connected with the motor; the motor drives the pressure regulating screw to move to realize voltage regulation; the method comprises the following steps that the accumulated working time of a motor corresponding to an expected output pressure value in a corresponding rotating direction is obtained by the air compressor according to a preset mapping relation in the working process; controlling the motor according to the accumulated working time to adjust the air pressure to the expected output pressure value; the method may include: using the pneumatic tool for multiple times and respectively acquiring working data of the air compressor after using the pneumatic tool each time; the working data includes: when the pneumatic tool is used again, the output pressure value of the air compressor and the accumulated working time of the corresponding motor are obtained; and correcting the preset mapping relation according to the obtained multiple groups of working data. By the scheme of the embodiment, inaccuracy of a software pressure regulating control scheme caused by factors such as error accumulation, system aging and the like is avoided, and the air pressure regulating precision is ensured.
Additional features and advantages of embodiments of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the embodiments of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the examples of the application do not constitute a limitation of the embodiments of the invention.
Fig. 1 is a flowchart of a self-correcting method of an air compressor according to an embodiment of the present invention;
fig. 2 is a schematic view illustrating a self-correcting method of an air compressor according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a system for calibrating a pressure sensor according to an embodiment of the present invention;
fig. 4 is a block diagram illustrating a self-aligning device of an air compressor according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
In order to achieve the purpose of the embodiment of the invention, the embodiment of the invention provides a self-correcting method of an air compressor, wherein the air compressor can comprise a motor and a pressure regulating screw rod connected with the motor; the motor drives the pressure regulating screw to move to realize voltage regulation; the method comprises the following steps that the accumulated working time of a motor corresponding to an expected output pressure value in a corresponding rotating direction is obtained by the air compressor according to a preset mapping relation in the working process; controlling the motor according to the accumulated working time to adjust the air pressure to the expected output pressure value; as shown in fig. 1 and fig. 2, the method may include S101-S102:
s101, using the pneumatic tool for multiple times and respectively obtaining working data of the air compressor after using the pneumatic tool each time; the working data includes: when the pneumatic tool is used again, the output pressure value of the air compressor and the accumulated working time of the corresponding motor are obtained;
and S102, correcting the preset mapping relation according to the obtained multiple groups of working data.
In the exemplary embodiment of the invention, the proposed scheme can accurately adjust the position of the pressure regulating screw according to the pressure value input by the user, and the position ensures that the user has accurate pressure when using the pneumatic equipment, is not interfered by the current equipment using state, and reduces the influence after the equipment is aged. However, the calculation of the output pressure value by counting the accumulated working time of the motor becomes gradually inaccurate along with the accumulation of errors and the aging of the system; therefore, the scheme of the embodiment of the invention provides a method for self-calibrating and updating parameters of the air compressor.
In the exemplary embodiment of the invention, the system can monitor the working state of the air compressor in real time, obtain the current output pressure value after detecting that the user finishes using the pneumatic tool, update the accumulated working time of the motor according to the current output pressure value, and correct the calculation formula (the preset mapping relation formula) of the output pressure value according to the data obtained for many times.
In an exemplary embodiment of the present invention, the multi-use pneumatic tool may include: the air compressor is characterized in that the air compressor is provided with a disposable pneumatic tool, the disposable pneumatic tool is used for adjusting air pressure after the disposable pneumatic tool is used, and the pneumatic tool is reused according to the adjusted air pressure.
In an exemplary embodiment of the present invention, the condition of updating the preset mapping relation (e.g., updating the mapping coefficient) may be strict; for example, the pressure adjustment is performed only after the user uses the pneumatic tool, and the updating is performed only after the pressure adjustment is completed by using the pneumatic tool, and the output pressure values before and after the adjustment can be accurately obtained by the pressure sensor, so that errors caused by mechanical property differences are avoided.
In an exemplary embodiment of the present invention, the air compressor may further include a pressure sensor for detecting the output pressure value;
the method further comprises the following steps: the parameters of the pressure sensor are calibrated in advance.
In the exemplary embodiment of the present invention, before implementing the embodiment of the present invention, in order to avoid that the output pressure value is not accurate due to inaccurate detection of the pressure sensor, parameter correction may be performed on the pressure sensor in advance to ensure the detection accuracy of the pressure sensor.
In an exemplary embodiment of the present invention, the calibrating the parameter of the pressure sensor may include: respectively controlling the output air pressures of a plurality of standard pressure air sources with different output pressures, and correspondingly collecting the pressure values of the plurality of output air pressures through the pressure sensor; calculating correction parameters of the pressure sensor according to the pressure values of the output air pressures and a preset calculation formula;
wherein, the output air pressures of the plurality of standard pressure air sources are respectively positioned in different pressure areas.
In an exemplary embodiment of the present invention, calculating the correction parameter of the pressure sensor according to the pressure values of the plurality of output air pressures and a preset calculation formula may include:
substituting the pressure values of the output air pressures into the preset calculation formula to obtain a calculation result;
and taking the difference value between the calculation result and a preset standard value as a correction parameter of the pressure sensor.
In an exemplary embodiment of the present invention, the preset calculation formula may include, but is not limited to: an average value calculation formula, a root mean square value calculation formula, and the like. The preset standard value may be a value calculated according to the same calculation formula based on standard air pressure values theoretically output by a plurality of standard air pressure sources.
In the exemplary embodiment of the present invention, in the subsequent process, when the pressure sensor detects the output pressure value of the air compressor, the correction parameter may be calculated to eliminate the detection error of the pressure sensor.
In an exemplary embodiment of the present invention, the air compressor may further include: an air source change-over switch; the standard pressure gas source comprises: the first standard pressure air source, the second standard pressure air source and the third standard pressure air source are respectively connected with the input end of the air source change-over switch; the output end of the air source change-over switch is connected with the input end of the pressure sensor;
the pressure value of the first standard pressure air source is smaller than that of the second standard pressure air source, and the pressure value of the second standard pressure air source is smaller than that of the third standard pressure air source.
In an exemplary embodiment of the present invention, as shown in fig. 3, a schematic diagram of a system scheme for calibrating a pressure sensor is provided.
In an exemplary embodiment of the present invention, the parameter calibration of the pressure sensor may be performed mainly by the switching of the standard air pressure source in correspondence with the output value of the pressure sensor to perform the calibration and recording of the pressure calculation parameter. The implementation process can comprise: after the main control end is started, an air source change-over switch is arranged, a low-pressure air source (such as a first standard pressure air source) is started, and an output value is obtained from a pressure sensor after the pressure is stabilized; switching to a medium-pressure air source (such as a second standard-pressure air source), and recording the output value of the sensor; switching to a high-pressure air source (such as a third standard pressure air source), and recording the output value of the sensor; and finally, solving an equation according to the pressure values of the three air sources and the corresponding output values of the pressure sensors to obtain the air pressure correction parameters.
In an exemplary embodiment of the invention, the arbitrary one-time-use pneumatic tool is labeled as a first-time-use pneumatic tool; marking the re-use pneumatic tool according to the adjusted air pressure as a second use pneumatic tool;
the respectively acquiring the working data of the air compressor after the pneumatic tool is used each time may include:
after the pneumatic tool is used for the first time, acquiring a current first output pressure value of an air compressor and a current first accumulated working time length of the motor as a first group of working data;
and after the second time of using the pneumatic tool is detected to be finished, acquiring a current second output pressure value of the air compressor and a current second accumulated working time of the motor as a second group of working data.
In an exemplary embodiment of the present invention, as shown in fig. 2, during the operation of the pneumatic tool by the user, the usage state of the air compressor may be monitored in real time, and after it is detected that the pneumatic tool is used by the user, the current output pressure value of the air compressor and the corresponding accumulated operation time of the motor (i.e. the first set of operation data) may be obtained; at this time, if the user adjusts the period pressure value and uses the pneumatic tool again, the adjusted expected output pressure value can be detected, and the accumulated working time of the motor in the corresponding rotating direction corresponding to the expected output pressure value is obtained according to the preset mapping relation; controlling the motor to work according to the accumulated working time length corresponding to the expected output pressure value so as to obtain the expected output pressure value; after the completion of the reuse of the pneumatic tool is detected, the current output pressure value of the air compressor can be obtained again, and the current accumulated working time of the motor (namely the second group of working data) is recorded.
In an exemplary embodiment of the present invention, the correcting the preset mapping relation according to the obtained multiple sets of working data may include: and correcting the mapping coefficients of the preset mapping relation according to the obtained multiple groups of working data.
In an exemplary embodiment of the present invention, the mapping relation may be created again to correct the entire mapping relation, or only the mapping coefficient in the original mapping relation may be corrected.
In an exemplary embodiment of the present invention, the correcting the mapping coefficients of the preset mapping relation according to the obtained plurality of sets of working data may include:
substituting the multiple groups of working data into a preset mapping relation containing unknown mapping coefficients, and calculating the numerical values of the mapping coefficients;
and updating the numerical value of the original mapping coefficient in the preset mapping relation by using the calculated numerical value of the mapping coefficient, so as to realize the correction of the mapping coefficient of the preset mapping relation.
In the exemplary embodiment of the present invention, the mapping coefficients may be recalculated by the multiple sets of working data obtained in the foregoing scheme, so as to update the mapping coefficients, and the calculated mapping coefficients may also be a scheme as follows, where the calculated mapping coefficients do not directly replace the values of the original mapping coefficients, but may be given certain authority to be fused with the values of the original mapping coefficients, so as to obtain new mapping coefficients to be updated into the mapping relation.
In an exemplary embodiment of the present invention, the correcting the mapping coefficients of the preset mapping relation according to the obtained multiple sets of working data may further include:
substituting the multiple groups of working data into a preset mapping relation containing unknown mapping coefficients, and calculating the numerical values of the mapping coefficients;
calculating the calculated numerical value of each mapping coefficient and the numerical value of the original mapping coefficient corresponding to the calculated numerical value of the mapping coefficient according to a preset weight value to obtain the final numerical value of the mapping coefficient;
and updating the value of the original mapping coefficient in the preset mapping relation according to the calculated final value of each mapping coefficient, so as to realize the correction of the mapping coefficient in the preset mapping relation.
In an exemplary embodiment of the present invention, the calculated weight of the value of the mapping coefficient may include: 10% -30%;
the weight occupied by the value of the original mapping coefficient may include: 70 to 90 percent.
In an exemplary embodiment of the present invention, the calculated weight occupied by the value of the mapping coefficient may be 25% and the weight occupied by the value of the original mapping coefficient may be 75%.
In an exemplary embodiment of the present invention, since the original mapping coefficient is a value obtained through a plurality of self-correction accumulations, the calculation accuracy is high, and therefore, the weight occupied by the value of the original mapping coefficient is large, and the weight occupied by the newly calculated value of the mapping coefficient is small. The newly calculated weight of the value of the mapping coefficient is added to effectively avoid calculation errors caused by current adverse factors such as accumulated errors and system aging.
In order to achieve the object of the embodiment of the present invention, the embodiment of the present invention further provides a self-leveling device 1 of an air compressor, as shown in fig. 4, including a processor 11 and a computer-readable storage medium 12, where the computer-readable storage medium 12 stores instructions, and when the instructions are executed by the processor 11, the self-leveling device of the air compressor implements any one of the above self-leveling methods of the air compressor.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
Claims (7)
1. The self-correction method of the air compressor is characterized in that the air compressor comprises a motor and a pressure regulating screw rod connected with the motor; the motor drives the pressure regulating screw to move to realize voltage regulation; the method comprises the following steps that the accumulated working time of a motor corresponding to an expected output pressure value in a corresponding rotating direction is obtained by the air compressor according to a preset mapping relation in the working process; controlling the motor according to the accumulated working time to adjust the air pressure to the expected output pressure value; the method comprises the following steps:
using the pneumatic tool for multiple times and respectively acquiring working data of the air compressor after using the pneumatic tool each time; the working data includes: when the pneumatic tool is used again, the output pressure value of the air compressor and the accumulated working time of the corresponding motor are obtained;
correcting the mapping coefficients of the preset mapping relation according to the obtained multiple groups of working data, wherein the correction comprises the following steps:
substituting the multiple groups of working data into a preset mapping relation containing unknown mapping coefficients, and calculating the numerical values of the mapping coefficients;
calculating the calculated numerical value of each mapping coefficient and the numerical value of the original mapping coefficient corresponding to the calculated numerical value of the mapping coefficient according to a preset weight value to obtain the final numerical value of the mapping coefficient;
and updating the value of the original mapping coefficient in the preset mapping relation according to the calculated final value of each mapping coefficient, so as to realize the correction of the mapping coefficient in the preset mapping relation.
2. The self-leveling method of an air compressor according to claim 1, wherein the multi-use pneumatic tool comprises: the air compressor is characterized in that the air compressor is provided with a disposable pneumatic tool, the disposable pneumatic tool is used for adjusting air pressure after the disposable pneumatic tool is used, and the pneumatic tool is reused according to the adjusted air pressure.
3. The self-leveling method of an air compressor according to claim 2, wherein the arbitrary single-use pneumatic tool is marked as a first-use pneumatic tool; marking the re-use pneumatic tool according to the adjusted air pressure as a second use pneumatic tool;
respectively acquire the working data of air compressor machine behind the pneumatic tool of use at every turn including:
after the pneumatic tool is used for the first time, acquiring a current first output pressure value of an air compressor and a current first accumulated working time length of the motor as a first group of working data;
and after the second time of using the pneumatic tool is detected to be finished, acquiring a current second output pressure value of the air compressor and a current second accumulated working time of the motor as a second group of working data.
4. The self-correcting method of the air compressor according to claim 1, wherein the calculated weight of the value of the mapping coefficient comprises: 10% -30%;
the weight occupied by the value of the original mapping coefficient comprises: 70 to 90 percent.
5. The self-correcting method of the air compressor according to claim 1, wherein the air compressor further comprises a pressure sensor for detecting an output pressure value of the air compressor;
the method further comprises the following steps: the parameters of the pressure sensor are calibrated in advance.
6. The self-leveling method of the air compressor according to claim 5, wherein the calibrating the parameter of the pressure sensor comprises: respectively controlling the output air pressures of a plurality of standard pressure air sources with different output pressures, and correspondingly collecting the pressure values of the plurality of output air pressures through the pressure sensor; calculating correction parameters of the pressure sensor according to the pressure values of the output air pressures and a preset calculation formula;
wherein, the output air pressures of the plurality of standard pressure air sources are respectively positioned in different pressure areas.
7. A self-leveling device for an air compressor, comprising a processor and a computer-readable storage medium, wherein instructions are stored in the computer-readable storage medium, and when the instructions are executed by the processor, the self-leveling device for the air compressor is implemented according to any one of claims 1 to 6.
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| JPS6320603A (en) * | 1986-07-15 | 1988-01-28 | Tlv Co Ltd | Automatic set reduction valve |
| DE3927110A1 (en) * | 1989-08-17 | 1991-02-21 | Bosch Gmbh Robert | SOLENOID VALVE WITH EXCITING CURRENT CONTROL DEVICE |
| US8746275B2 (en) * | 2008-07-14 | 2014-06-10 | Emerson Electric Co. | Gas valve and method of control |
| CN102435392B (en) * | 2011-10-27 | 2014-02-05 | 西北工业大学 | Remote intelligent pressure sensor calibration system |
| CN102866713B (en) * | 2012-10-16 | 2015-03-25 | 深圳市安保科技有限公司 | Respiratory flow adjusting device and breathing machine |
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