CN112556801A - Liquid level sensor correction method and device and urea machine - Google Patents
Liquid level sensor correction method and device and urea machine Download PDFInfo
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- CN112556801A CN112556801A CN202011376823.6A CN202011376823A CN112556801A CN 112556801 A CN112556801 A CN 112556801A CN 202011376823 A CN202011376823 A CN 202011376823A CN 112556801 A CN112556801 A CN 112556801A
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- 239000007788 liquid Substances 0.000 title claims abstract description 206
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 239000004202 carbamide Substances 0.000 title claims abstract description 108
- 238000012937 correction Methods 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000003756 stirring Methods 0.000 claims abstract description 73
- 238000003860 storage Methods 0.000 claims abstract description 56
- 238000004590 computer program Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000001802 infusion Methods 0.000 claims description 8
- 230000004913 activation Effects 0.000 claims description 4
- 239000000523 sample Substances 0.000 abstract description 14
- 238000002360 preparation method Methods 0.000 description 8
- 238000000605 extraction Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 7
- 238000005086 pumping Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/211—Measuring of the operational parameters
- B01F35/2112—Level of material in a container or the position or shape of the upper surface of the material
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Abstract
The invention discloses a correction method and device of a liquid level sensor and a urea machine. Wherein, the method comprises the following steps: sending a starting signal to the liquid pump to start the liquid pump to convey the urea solution in the stirring barrel of the urea machine to a preset storage container; determining that all the urea solution in the stirring barrel is conveyed to a preset storage container; acquiring a liquid level value of a liquid level sensor in the stirring barrel, wherein the liquid level sensor is arranged in the stirring barrel; and determining the liquid level value as a non-zero value, and performing zero correction on the liquid level sensor. The invention solves the technical problem that in the prior art, the liquid level sensor in the urea machine is arranged at the bottom of the stirring barrel, and foreign matters are easy to accumulate on the probe of the liquid level sensor, so that the precision of the liquid level sensor has larger error.
Description
Technical Field
The invention relates to the technical field of urea machine control, in particular to a correction method and device of a liquid level sensor and a urea machine.
Background
In traditional automobile-used urea intelligent machine, with level sensor direct mount agitator bottom, fig. 1 is according to agitator among the prior art and level sensor's the relation sketch map that sets up, as shown in fig. 1, level sensor sets up in the bottom of agitator to the positive setting of probe, along with the increase of live time, the foreign matter can overstock on the sensor probe, thereby leads to the great error of level sensor precision to appear.
The problem that the precision of the liquid level sensor has large errors is caused because the liquid level sensor in the urea machine is arranged at the bottom of the stirring barrel and is easy to accumulate foreign matters on a probe of the liquid level sensor, and an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a method and a device for correcting a liquid level sensor and a urea machine, which at least solve the technical problem that in the related art, the liquid level sensor in the urea machine is arranged at the bottom of a stirring barrel, and foreign matters are easily accumulated on a probe of the liquid level sensor, so that the precision of the liquid level sensor has large errors.
According to an aspect of the embodiments of the present invention, there is provided a method for calibrating a liquid level sensor, the liquid level sensor being disposed on an outer side of a blending tank of a urea machine in an opposite direction, the method including: sending a starting signal to an infusion pump to start the infusion pump to convey the urea solution in a stirring barrel of the urea machine to a preset storage container; determining that all of the urea solution in the stirring barrel is delivered to the predetermined storage container; acquiring a liquid level value of a liquid level sensor in the stirring barrel, wherein the liquid level sensor; and determining that the liquid level numerical value is a non-zero numerical value, and performing zero correction on the liquid level sensor.
Optionally, sending an activation signal to the infusion pump comprises: obtaining the concentration value of the urea solution in the stirring barrel; determining that the urea solution meets production demand information based on the concentration value, wherein the production demand information is determined based on production demand; and generating the starting signal and sending the starting signal to the liquid pump.
Optionally, determining that all of the urea solution in the agitator tank is delivered to the predetermined storage vessel comprises: acquiring flow data of a flowmeter in the process of conveying the urea solution in the stirring barrel to the preset storage container; determining that the urea solution is entirely delivered to the predetermined storage vessel based on the flow data.
Optionally, determining that all of the urea solution in the agitator tank is delivered to the predetermined storage vessel comprises: acquiring the running time of the liquid pump; and determining that the urea solution in the stirring barrel is completely delivered to the preset storage container when the running time reaches a preset time threshold value.
Optionally, determining that the liquid level value is a non-zero value, and performing zero calibration on the liquid level sensor includes: acquiring a display numerical value of the liquid level sensor; under the condition that the display numerical value is determined to be a non-zero numerical value, controlling the liquid pump to continuously operate for a preset time; when the preset time length is up, acquiring and judging whether the display numerical value of the liquid level sensor is zero or not again; and when the display numerical value of the liquid level sensor obtained again is not a non-zero numerical value, controlling the liquid pump to stop running and carrying out zero correction on the liquid level sensor.
Optionally, zero calibration of the level sensor comprises: generating a zero correction signal; and sending the zero correction signal to the liquid level sensor so as to control the liquid level sensor to perform zero correction based on the zero correction signal.
According to another aspect of the embodiments of the present invention, there is provided a calibration device for a liquid level sensor, the liquid level sensor being disposed on an outer side of a mixing tank of a urea machine in an opposite direction, the calibration device including: the sending unit is used for sending a starting signal to the liquid pump so as to start the liquid pump to convey the urea solution in the stirring barrel of the urea machine to a preset storage container; a determination unit for determining that all of the urea solution in the agitating tank is delivered to the predetermined storage container; the acquisition unit is used for acquiring a liquid level value of a liquid level sensor in the stirring barrel, wherein the liquid level sensor is arranged in the stirring barrel; and the correction unit is used for determining that the liquid level numerical value is a non-zero numerical value and carrying out zero correction on the liquid level sensor.
Optionally, the sending unit includes: the first acquisition module is used for acquiring the concentration value of the urea solution in the stirring barrel; a first determination module for determining that the urea solution meets preparation demand information based on the concentration value, wherein the preparation demand information is determined based on production demand; and the sending module is used for generating the starting signal and sending the starting signal to the liquid pump.
Optionally, the determining unit includes: the second acquisition module is used for acquiring flow data of a flowmeter in the process of conveying the urea solution in the stirring barrel to the preset storage container; a second determination module to determine that the urea solution is all delivered to the predetermined storage vessel based on the flow data.
Optionally, the determining unit includes: the third acquisition module is used for acquiring the running time of the liquid pump; and the third determination module is used for determining that all the urea solution in the stirring barrel is delivered to the preset storage container when the running time reaches a preset time threshold.
Optionally, the correction unit includes: the fourth acquisition module is used for acquiring a display numerical value of the liquid level sensor; the control module is used for controlling the liquid pump to continuously operate for a preset time under the condition that the display numerical value is determined to be a non-zero numerical value; the fifth acquisition module is used for acquiring and judging whether the display numerical value of the liquid level sensor is zero again when the preset time length is reached; and the first correction module is used for controlling the liquid pump to stop running and carrying out zero correction on the liquid level sensor when the display numerical value of the liquid level sensor obtained again is not a non-zero numerical value.
Optionally, the correction unit includes: the generating module is used for generating a zero correction signal; and the second correction module is used for sending the zero correction signal to the liquid level sensor so as to control the liquid level sensor to perform zero correction based on the zero correction signal.
According to another aspect of the embodiment of the invention, a urea machine using the correction method of the liquid level sensor is further provided.
According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium including a stored computer program, wherein when the computer program is executed by a processor, the computer storage medium controls an apparatus to execute the method for calibrating a liquid level sensor according to any one of the above.
According to another aspect of an embodiment of the present invention, there is also provided a processor for executing a computer program, wherein the computer program executes to perform the method of calibrating a level sensor as defined in any one of the above.
In the embodiment of the invention, a starting signal is sent to the liquid pump to start the liquid pump to convey the urea solution in the stirring barrel of the urea machine to a preset storage container; determining that all the urea solution in the stirring barrel is conveyed to a preset storage container; acquiring a liquid level value of a liquid level sensor in the stirring barrel, wherein the liquid level sensor is arranged in the stirring barrel; the liquid level value is determined to be a non-zero value, and the liquid level sensor is subjected to zero correction, through the correction method of the liquid level sensor provided by the embodiment of the invention, the liquid level sensor is converted from the internal forward installation to the external reverse installation of the stirring barrel, impurities are effectively prevented from being adhered to a liquid level sensor probe, the detection precision of the liquid level sensor is improved, and the technical problem that the precision of the liquid level sensor has larger errors due to the fact that foreign matters are easily accumulated on the liquid level sensor probe because the liquid level sensor in a urea machine is arranged at the bottom of the stirring barrel in the related technology is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic diagram of the arrangement relationship between a mixing tank and a liquid level sensor according to the prior art;
FIG. 2 is a flow chart of a calibration method of a level sensor according to an embodiment of the invention;
FIG. 3 is a schematic diagram of the arrangement relationship of the mixing tank and the liquid level sensor according to the embodiment of the invention;
FIG. 4 is an alternative calibration method for a fluid level sensor according to an embodiment of the invention;
FIG. 5 is a schematic view of a calibration arrangement for a level sensor according to an embodiment of the invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
According to an embodiment of the present invention, there is provided a method embodiment of a method for calibrating a level sensor, it is noted that the level sensor is disposed opposite an outside of a mixer drum of a urea machine, the steps illustrated in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions, and although a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than that illustrated herein.
Fig. 2 is a flow chart of a calibration method of a level sensor according to an embodiment of the present invention, as shown in fig. 2, the calibration method of the level sensor comprising the steps of:
and step S202, sending a starting signal to the liquid pump to start the liquid pump to convey the urea solution in the stirring barrel of the urea machine to a preset storage container.
Alternatively, in the embodiment of the present invention, one end of the liquid pumping pump may be connected to the stirring barrel, and the other end of the liquid pumping pump may be connected to a predetermined storage container, so that the urea solution in the stirring barrel may be delivered to the predetermined storage container during the operation of the liquid pumping pump.
In an alternative embodiment, sending an activation signal to the infusion pump comprises: obtaining the concentration value of the urea solution in the stirring barrel; determining that the urea solution meets preparation demand information based on the concentration value, wherein the preparation demand information is determined based on production demand; an activation signal is generated and sent to the infusion pump.
In this embodiment, the start signal is sent to the liquid pump only when it is determined that the urea solution is qualified; specifically, the concentration value of the urea solution in the mixing tank can be obtained, whether the urea solution meets the preparation requirement information or not is determined based on the concentration value of the urea solution, and when the urea solution in the mixing tank meets the preparation requirement information, a starting signal can be generated and sent to the liquid pump.
It should be noted that, in the embodiment of the present invention, the liquid level sensor is reversely disposed at the outer side of the stirring barrel, fig. 3 is a schematic view illustrating a relationship between the stirring barrel and the liquid level sensor according to the embodiment of the present invention, and as shown in fig. 3, the liquid level sensor is disposed at the outer side of the stirring barrel, that is, the liquid level sensor is installed at the outer side of the stirring barrel in a vertical direction by using a pipeline to lead the side surface to the side surface, so that it can be ensured that a sensor probe does not accumulate foreign matter, and the liquid level.
Step S204, determining that all the urea solution in the stirring barrel is conveyed to a preset storage container.
In one aspect, determining that the urea solution in the mixing tank is all delivered to a predetermined storage vessel comprises: acquiring flow data of a flowmeter in the process of conveying the urea solution in the stirring barrel to a preset storage container; it is determined based on the flow data that the urea solution is all delivered to the predetermined storage vessel.
Optionally, the flow meter may be disposed on a pipeline where the liquid pump is located, or may be disposed on a branch of the pipeline where the liquid pump is located.
In this embodiment, whether the urea solution is completely delivered from the agitation tank to the predetermined storage container may be determined based on the amount of the urea solution drawn by the liquid-drawing pump.
In another aspect, determining that the urea solution in the mixing tank is all delivered to a predetermined storage vessel comprises: acquiring the running time of the liquid pump; and determining that the urea solution in the stirring barrel is completely delivered to a preset storage container when the running time reaches a preset time threshold value.
In this embodiment, whether the urea solution is completely delivered from the agitating tank to the predetermined storage container may be determined by the operation period of the liquid-extracting pump.
In the embodiment, the urea machine is optimized in program, whether the urea solution is completely conveyed from the stirring barrel to the preset storage container is determined based on one or both of the urea solution extraction amount of the liquid extracting pump and the operation time of the liquid extracting pump, and the reliability of the urea machine is improved.
Step S206, acquiring a liquid level value of a liquid level sensor in the stirring barrel, wherein the liquid level sensor; and determining the liquid level value as a non-zero value, and performing zero correction on the liquid level sensor.
As can be seen from the above, in the embodiment of the present invention, the liquid level sensor may be reversely disposed on the outer side of the stirring barrel, that is, the liquid level sensor is installed on the outer side of the stirring barrel in the vertical direction of the side surface by using a pipeline, and the liquid pump is started to deliver the urea solution in the stirring barrel of the urea machine to the predetermined storage container by sending a start signal to the liquid pump; determining that all the urea solution in the stirring barrel is conveyed to a preset storage container; acquiring a liquid level value of a liquid level sensor in the stirring barrel, wherein the liquid level sensor is arranged in the stirring barrel; confirm that liquid level numerical value is nonzero value, carry out zero correction to level sensor, realized converting level sensor into outside reverse installation by the inside forward installation of agitator, effectively avoided the impurity adhesion on level sensor probe, improved level sensor's detection precision.
Therefore, the correction method of the liquid level sensor provided by the embodiment of the invention solves the technical problem that in the related art, the liquid level sensor in the urea machine is arranged at the bottom of the stirring barrel, and foreign matters are easily accumulated on the probe of the liquid level sensor, so that the precision of the liquid level sensor has larger errors.
In an alternative embodiment, determining the level value as a non-zero value and zeroing the level sensor comprises: acquiring a display numerical value of the liquid level sensor; under the condition that the display numerical value is determined to be a non-zero numerical value, controlling the liquid pump to continuously operate for a preset time; when the preset time is up, acquiring and judging whether the display numerical value of the liquid level sensor is zero or not again; and when the display numerical value of the liquid level sensor obtained again is not a non-zero numerical value, controlling the liquid pump to stop running and carrying out zero correction on the liquid level sensor.
In the embodiment, after the urea solution in the stirring barrel is completely conveyed to the preset storage container, when the display numerical value of the liquid level sensor is obtained, when the display numerical value is zero, the liquid pump is controlled to stop running, and the urea solution is extracted; otherwise, when the display numerical value is not zero, delaying the operation time of the liquid pump, controlling the liquid pump to continuously operate for a preset time, judging whether the display numerical value of the liquid level sensor is zero again after the preset time is reached, if so, stopping liquid pumping, and finishing the extraction of the urea solution; otherwise, the urea solution extraction work is also stopped, and the zero position correction is carried out on the liquid level sensor.
In an alternative embodiment, zeroing the level sensor comprises: generating a zero correction signal; and sending the zero correction signal to the liquid level sensor so as to control the liquid level sensor to perform zero correction based on the zero correction signal.
FIG. 4 is a diagram illustrating an alternative method for calibrating a liquid level sensor according to an embodiment of the present invention, as shown in FIG. 4, when the urea solution in the mixer drum is determined to be acceptable and the liquid pump is started; judging whether the urea solution in the stirring barrel is completely pumped out or not based on the numerical value of the flowmeter; if not, starting the liquid pump; otherwise, judging whether the display numerical value of a liquid level sensor connected with the stirring barrel is zero, if so, stopping extracting the urea solution, and finishing the extraction work of the urea solution; otherwise, the liquid pump is delayed to continue to operate for a preset time; after the preset time is up, judging whether the display numerical value of a liquid level sensor connected with the stirring barrel is zero again, if so, stopping extracting the urea solution, and finishing the extraction work of the urea solution; and otherwise, stopping urea solution extraction and performing zero correction on the liquid level sensor.
Therefore, in the embodiment of the invention, the liquid level sensor is led to the side surface of the stirring barrel by the pipeline to be vertically and reversely installed, so that the probe of the liquid level sensor is prevented from being overstocked with foreign matters; and optimizing the program, when the solution in the stirring barrel is pumped out (the solution is pumped out by adding the solution pumping amount and the pumping time to judge whether the solution is pumped out), the liquid level display of the liquid level sensor is not a zero position, and the program automatically corrects the zero position of the liquid level sensor to ensure the long-term stable operation of the liquid level sensor.
In conclusion, in the embodiment of the invention, the installation position of the liquid level sensor in the stirring barrel of the automobile urea intelligent machine is changed, and the program optimization is carried out, so that impurities can be effectively prevented from being adhered to the probe of the liquid level sensor, the zero position of the liquid level sensor is corrected according to the completion condition of solution extraction, and the long-term stable operation of the liquid level sensor is ensured.
Example 2
According to another aspect of the embodiment of the present invention, there is further provided a calibration device for a liquid level sensor, the liquid level sensor is reversely arranged outside a mixing tank of a urea machine, fig. 5 is a schematic diagram of the calibration device for a liquid level sensor according to the embodiment of the present invention, and as shown in fig. 5, the calibration device for a liquid level sensor may include: a transmitting unit 51, a determining unit 53 and an acquiring unit 55. The following describes a calibration device for the liquid level sensor.
And the sending unit 51 is used for sending a starting signal to the liquid pump so as to start the liquid pump to convey the urea solution in the stirring barrel of the urea machine to a preset storage container.
A determination unit 53 for determining that the urea solution in the agitating tank is entirely delivered to a predetermined storage container.
The acquisition unit 55 is used for acquiring a liquid level value of a liquid level sensor in the stirring barrel, wherein the liquid level sensor; and the correction unit is used for determining that the liquid level numerical value is a non-zero numerical value and carrying out zero correction on the liquid level sensor.
It should be noted here that the sending unit 51, the determining unit 53 and the acquiring unit 55 correspond to steps S202 to S206 in embodiment 1, and the units are the same as the examples and application scenarios realized by the corresponding steps, but are not limited to the disclosure in embodiment 1. It should be noted that the above-described elements as part of an apparatus may be implemented in a computer system, such as a set of computer-executable instructions.
As can be seen from the above, in the above embodiments of the present application, the sending unit may be used to send a start signal to the liquid pump to start the liquid pump to deliver the urea solution in the stirring tank of the urea machine to the predetermined storage container; then, determining that all the urea solution in the stirring barrel is conveyed to a preset storage container by using a determination unit; acquiring a liquid level value of a liquid level sensor in the stirring barrel by using an acquisition unit, wherein the liquid level sensor is arranged in the stirring barrel; and the correction unit is used for determining that the liquid level numerical value is a non-zero numerical value and carrying out zero correction on the liquid level sensor. According to the correction device of the liquid level sensor, provided by the embodiment of the invention, the liquid level sensor is converted from the inner forward installation to the outer reverse installation of the stirring barrel, so that impurities are effectively prevented from being adhered to the probe of the liquid level sensor, the detection precision of the liquid level sensor is improved, and the technical problem that in the related technology, the liquid level sensor in a urea machine is arranged at the bottom of the stirring barrel, foreign matters are easily accumulated on the probe of the liquid level sensor, and the precision of the liquid level sensor has larger errors is solved.
In an alternative embodiment, the sending unit includes: the first acquisition module is used for acquiring the concentration value of the urea solution in the stirring barrel; the first determination module is used for determining that the urea solution meets the preparation demand information based on the concentration value, wherein the preparation demand information is determined based on the production demand; and the sending module is used for generating a starting signal and sending the starting signal to the liquid pump.
In an alternative embodiment, the determining unit comprises: the second acquisition module is used for acquiring flow data of the flowmeter in the process of conveying the urea solution in the stirring barrel to a preset storage container; a second determination module to determine that the urea solution is all delivered to a predetermined storage vessel based on the flow data.
In an alternative embodiment, the determining unit comprises: the third acquisition module is used for acquiring the operation time of the liquid pump; and the third determination module is used for determining that the urea solution in the stirring barrel is completely delivered to the preset storage container under the condition that the running time reaches the preset time threshold.
In an alternative embodiment, the correction unit comprises: the fourth acquisition module is used for acquiring a display numerical value of the liquid level sensor; the control module is used for controlling the liquid pump to continuously operate for a preset time under the condition that the display numerical value is determined to be a non-zero numerical value; the fifth acquisition module is used for acquiring and judging whether the display numerical value of the liquid level sensor is zero again when the preset time length is reached; and the first correction module is used for controlling the liquid pump to stop running and carrying out zero correction on the liquid level sensor when the display numerical value of the liquid level sensor acquired again is not a non-zero numerical value.
In an alternative embodiment, the correction unit comprises: the generating module is used for generating a zero correction signal; and the second correction module is used for sending the zero correction signal to the liquid level sensor so as to control the liquid level sensor to carry out zero correction based on the zero correction signal.
Example 3
According to another aspect of the embodiment of the invention, a urea machine and a correction method using the liquid level sensor in any one of the above are further provided.
Example 4
According to another aspect of the embodiments of the present invention, there is also provided a computer-readable storage medium including a stored computer program, wherein the computer program, when executed by a processor, controls an apparatus in which the computer storage medium is located to perform the method of calibrating a level sensor of any one of the above.
Example 5
According to another aspect of an embodiment of the present invention, there is also provided a processor for executing a computer program, wherein the computer program when executed performs the method of calibrating a level sensor of any one of the above.
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.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. 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 and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The correction method of the liquid level sensor is characterized in that the liquid level sensor is reversely arranged on the outer side of a stirring barrel of a urea machine, and comprises the following steps:
sending a starting signal to an infusion pump to start the infusion pump to convey the urea solution in a stirring barrel of the urea machine to a preset storage container;
determining that all of the urea solution in the stirring barrel is delivered to the predetermined storage container;
acquiring a liquid level value of a liquid level sensor in the stirring barrel, wherein the liquid level sensor;
and determining that the liquid level numerical value is a non-zero numerical value, and performing zero correction on the liquid level sensor.
2. The method of claim 1, wherein sending an activation signal to the infusion pump comprises:
obtaining the concentration value of the urea solution in the stirring barrel;
determining that the urea solution meets production demand information based on the concentration value, wherein the production demand information is determined based on production demand;
and generating the starting signal and sending the starting signal to the liquid pump.
3. The method of claim 1, wherein determining that all of the urea solution in the blending tank is delivered to the predetermined storage vessel comprises:
acquiring flow data of a flowmeter in the process of conveying the urea solution in the stirring barrel to the preset storage container;
determining that the urea solution is entirely delivered to the predetermined storage vessel based on the flow data.
4. The method of claim 1, wherein determining that all of the urea solution in the blending tank is delivered to the predetermined storage vessel comprises:
acquiring the running time of the liquid pump;
and determining that the urea solution in the stirring barrel is completely delivered to the preset storage container when the running time reaches a preset time threshold value.
5. The method of claim 1, wherein determining the level value as a non-zero value, zeroing the level sensor comprises:
acquiring a display numerical value of the liquid level sensor;
under the condition that the display numerical value is determined to be a non-zero numerical value, controlling the liquid pump to continuously operate for a preset time;
when the preset time length is up, acquiring and judging whether the display numerical value of the liquid level sensor is zero or not again;
and when the display numerical value of the liquid level sensor obtained again is not a non-zero numerical value, controlling the liquid pump to stop running and carrying out zero correction on the liquid level sensor.
6. The method of any one of claims 1 to 5, wherein zero correcting the level sensor comprises:
generating a zero correction signal;
and sending the zero correction signal to the liquid level sensor so as to control the liquid level sensor to perform zero correction based on the zero correction signal.
7. The utility model provides a correcting unit of level sensor, its characterized in that, level sensor sets up in the outside of the agitator of urea machine in reverse, includes:
the sending unit is used for sending a starting signal to the liquid pump so as to start the liquid pump to convey the urea solution in the stirring barrel of the urea machine to a preset storage container;
a determination unit for determining that all of the urea solution in the agitating tank is delivered to the predetermined storage container;
the acquisition unit is used for acquiring a liquid level value of a liquid level sensor in the stirring barrel, wherein the liquid level sensor is arranged in the stirring barrel;
and the correction unit is used for determining that the liquid level numerical value is a non-zero numerical value and carrying out zero correction on the liquid level sensor.
8. A urea machine, characterized in that it uses the calibration method of the level sensor according to any one of the preceding claims 1 to 6.
9. A computer-readable storage medium, comprising a stored computer program, wherein the computer program, when executed by a processor, controls an apparatus in which the computer storage medium is located to perform the method of calibration of a liquid level sensor of any of claims 1-6.
10. A processor, characterized in that it is configured to run a computer program, wherein the computer program is configured to perform the method of calibration of a liquid level sensor according to any one of claims 1 to 6 when running.
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