CN110836784A - Spraying system, fault detection method based on spraying system and fault type determination method - Google Patents
Spraying system, fault detection method based on spraying system and fault type determination method Download PDFInfo
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Abstract
The invention relates to the technical field of fault detection, in particular to a spraying system, a fault detection method and a fault type determination method based on the spraying system. The sprinkler system, comprising: the spraying system comprises a liquid storage device, a control device, a flow detection device, a pressure detection device, a pressurization device and at least one liquid spraying device, wherein the liquid storage device, the pressurization device and the at least one liquid spraying device are communicated through a pipeline, the flow detection device and the pressure detection device are connected in series in a pipeline passage to correspondingly detect flow data and pressure data in the pipeline passage, and the control device is electrically connected with the flow detection device and the pressure detection device respectively to detect faults of the spraying system based on the flow data and the pressure data and output corresponding alarm signals. The scheme provided by the invention is favorable for visually determining whether the spraying system has a fault or not and reducing the difficulty of fault judgment.
Description
Technical Field
The invention relates to the technical field of fault detection, in particular to a spraying system, a fault detection method and a fault type determination method based on the spraying system.
Background
With the advance of modern science and technology, the manual work has been replaced by the machine to the operation of spraying, has also brought some problems when having liberated the manpower. Generally speaking, the working environment of spraying operation equipment is complicated, such as a pesticide sprayer walking in a farmland, the pesticide box falls into impurities or mixed impurities in liquid medicine and possibly blocks a liquid spraying device, or the moving speed of the equipment for performing spraying operation is too high, such as an unmanned aerial vehicle for performing spraying operation, operators cannot find that a spraying system breaks down in time, so that the purposes of spraying operation cannot be achieved due to leakage spraying or excessive spraying are caused, such as in the operation of spraying herbicide, weeds in a leakage spraying area cannot be removed, excessive spraying causes damage to non-operation objects and pollution to the land of an operation area, the pesticide application area and the pesticide application area are not easy to distinguish, and secondary flooding of diseases, insects and weeds is caused. If the condition of the missed spray area is not accurately judged, the missed spray is avoided by using a repeated spraying mode, so that the manpower and material resources are wasted, and the secondary pollution to the environment is further caused.
Therefore, finding whether the spraying operation equipment has a fault in time and determining the fault type so as to repair the fault in time are problems to be solved urgently.
Disclosure of Invention
The object of the present invention is to solve at least one of the above-mentioned technical drawbacks, in particular the problem of how to detect whether a sprinkler system is malfunctioning or to determine the type of malfunction that has occurred.
The invention firstly provides a spraying system, which comprises a liquid storage device, a control device, a flow detection device, a pressure detection device, a pressurization device and at least one liquid spraying device, wherein the liquid storage device, the pressurization device and the at least one liquid spraying device are communicated through a pipeline, the flow detection device and the pressure detection device are connected in series in a pipeline passage so as to correspondingly detect flow data and pressure data in the pipeline passage, and the control device is respectively and electrically connected with the flow detection device and the pressure detection device so as to detect faults of the spraying system based on the flow data and the pressure data and output corresponding alarm signals.
Preferably, the pipeline comprises a main pipeline and a branch pipeline, and the flow detection device and/or the pressure detection device are/is arranged on the main pipeline or the branch pipeline.
Preferably, the pressure detection device is disposed in a downstream pipe of the flow detection device.
Preferably, the method further comprises the following steps: at least one switching device for communicating or closing the pipelines is arranged on the main pipeline or/and each branch pipeline.
Preferably, the liquid spraying device comprises a telescopic spray rod and a spray head arranged at the end of the spray rod.
Further, an embodiment of the present invention further provides a spraying apparatus, including the spraying system according to any one of the above technical solutions, where the spraying system is assembled on the spraying apparatus.
Further, an embodiment of the present invention provides a method for detecting a fault of a spraying system, which is applicable to the spraying system according to any one of the above technical solutions, and the method includes the following steps: the control device of the spraying system receives measured solution flow data information and measured solution pressure data information which are acquired by the flow detection device and the pressure detection device;
obtaining reference solution flow data information corresponding to the measured solution pressure data information according to the relation between the solution pressure data information and the solution flow data information; judging whether the spraying system has a spraying fault or not based on the measured solution flow data information and the reference solution flow data information; and when the spraying system has spraying faults, outputting alarm information representing the spraying faults of the spraying system.
Preferably, the step of obtaining reference solution flow data information corresponding to the measured solution pressure data information according to a relationship between the solution pressure data information and the solution flow data information includes:
and determining reference solution flow data information corresponding to the measured solution pressure data information based on the relationship between the pre-calibrated solution pressure data information and the solution flow data information.
Preferably, the step of determining the reference solution flow data information corresponding to the measured solution pressure data information based on the relationship between the pre-calibrated solution pressure data information and the solution flow data information includes:
obtaining a type database calibrated for different types of liquid spraying devices, wherein a plurality of groups of different pressure data and corresponding flow data corresponding to the type of liquid spraying devices are stored in the type database;
determining the type of the liquid spraying device, calling a corresponding type database according to the type of the liquid spraying device, and traversing currently obtained measured solution pressure data information in the type database;
if the pressure data which is the same as the currently obtained measured solution pressure data information is retrieved from the type database, reference solution flow data information corresponding to the pressure data stored in the type database is called; and if the pressure data which is the same as the currently obtained measured solution pressure data information cannot be retrieved in the type database, calculating reference solution flow data information corresponding to the measured solution pressure data information by utilizing an interpolation algorithm based on the type database.
Preferably, the step of determining whether a spray failure occurs in the spray system based on the measured solution flow data information and the reference solution flow data information includes:
respectively determining the volume of the measured solution corresponding to the measured solution flow data information and the volume of the reference solution corresponding to the reference solution flow data information within the same preset time period;
and judging whether the spraying system has a spraying fault according to the difference value of the volume of the measured solution and the volume of the reference solution.
Preferably, the step of determining the volume of the measurement solution corresponding to the measurement solution flow data information and the volume of the reference solution corresponding to the reference solution flow data information within the same preset time period respectively includes:
and respectively integrating the measured solution flow data information in the preset time period and integrating the reference solution flow data information in the preset time period to obtain the corresponding measured solution volume and the reference solution volume.
Preferably, the step of determining whether a spraying failure occurs in the spraying system according to the difference between the measured solution volume and the reference solution volume includes:
when the flow detection device and the pressure detection device are free of faults, if the difference value between the volume of the measurement solution and the volume of the reference solution is within a preset error range, the spraying system is free of spraying faults, and if the difference value between the volume of the measurement solution and the volume of the reference solution exceeds the preset error range, the spraying system is free of spraying faults.
Furthermore, an embodiment of the present invention further provides a method for determining a fault type of a spraying system, where the method includes:
the fault detection method according to any one of the above technical solutions determines that a spraying fault occurs in the spraying system;
respectively obtaining a first measurement precision of the volume of the measurement solution and a second measurement precision of the volume of the reference solution, and respectively obtaining a measurement range of the volume of the measurement solution and a reference range of the volume of the reference solution according to the first measurement precision and the second measurement precision;
if the flow detection device has no fault, when the minimum value of the measurement range is larger than the maximum value of the reference range, the control device outputs a leakage alarm signal for representing that the spraying system has a leakage fault, and when the maximum value of the measurement range is smaller than the minimum value of the reference range, the control device outputs a blockage alarm signal for representing that the spraying system has a blockage fault.
According to the spraying system provided by the embodiment of the invention, the flow data and the pressure data in the pipeline passage are detected through the flow detection device and the pressure detection device, whether the spraying system breaks down or not is detected based on the flow data and the pressure data, and the corresponding alarm signal is output.
According to the method for detecting the fault of the spraying system, the measured solution flow data information obtained through actual measurement is compared with the reference solution flow data information, whether the spraying system has the fault or not is judged according to the comparison result, whether the spraying system has the fault or not can be judged without a complex computer processing process, the energy consumption of the system is reduced, the alarm information representing the fault of the spraying system is sent out, and related personnel can find the abnormity of the spraying system in time and carry out repairing operation. And because the fault detection process is carried out in real time, related personnel can record the exact position of the spraying fault according to the fault time of the spraying system by combining the positioning system, so that the area can be subjected to secondary spraying subsequently.
According to the method for determining the fault type of the spraying system, provided by the embodiment of the invention, the measurement range of the volume of the measurement solution corresponding to the measured flow is compared with the reference range of the volume of the reference solution corresponding to the reference flow, when the flow detection device is free from fault, whether the fault type is leakage or blockage of the liquid spraying device can be judged, and then a warning signal is sent to a server and/or a cloud end associated with the fault type, so that the precision degree of fault detection is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a spraying system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a spraying system according to an embodiment of the present invention, which mainly shows that the flow detection device and the pressure detection device are both disposed on a main pipeline;
fig. 3 is a schematic structural diagram of a spraying system according to an embodiment of the present invention, which mainly shows that the flow detection device and the pressure detection device are both disposed on a branch pipeline;
FIG. 4 is a schematic flow chart illustrating a method for detecting a fault in a sprinkler system according to an embodiment of the present invention;
fig. 5 is a schematic flow chart illustrating a step of determining reference solution flow data information corresponding to the measured solution pressure data information based on a relationship between pre-calibrated solution pressure data information and solution flow data information according to an embodiment of the present invention;
FIG. 6 is a schematic flow chart illustrating the steps of determining whether a spraying failure has occurred in the spraying system based on the measured solution flow data information and the reference solution flow data information according to an embodiment of the present invention;
FIG. 7 is a schematic flow chart illustrating a method for determining a fault type of a sprinkler system according to an embodiment of the present invention;
table 1 is a calibration table of solution pressure data information and solution flow data information provided in the embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
An embodiment of the present invention first provides a spraying system, a schematic structural diagram of which is shown in fig. 1, including: the spraying system comprises a liquid storage device, a control device, a flow detection device, a pressure detection device, a pressurization device and at least one liquid spraying device, wherein the liquid storage device, the pressurization device and the at least one liquid spraying device are communicated through a pipeline, the flow detection device and the pressure detection device are connected in series in a pipeline passage to correspondingly detect flow data and pressure data in the pipeline passage, and the control device is electrically connected with the flow detection device and the pressure detection device respectively to detect faults of the spraying system according to the flow data and the pressure data and output corresponding alarm signals.
The connection sequence of the flow detection device and the pressure detection device is not limited, the flow detection device and the pressure detection device can be sequentially connected in series between the pressurizing device and the liquid spraying device, and the pressure detection device can also be arranged at one side close to the pressurizing device.
The pressurizing device is used for increasing the pressure of the solution in the pipeline, and the pressurizing device is preferably electrically connected with the control device so that the control device and the pressurizing device can carry out signal transmission. The pressurizing device is connected in series in a main pipeline passage between the liquid storage device and the liquid spraying device, and can be a booster pump, and the booster pump is used for increasing the pressure in the pipeline passage so as to spray the solution from one end of the liquid spraying device.
The at least one liquid ejecting apparatus may include one liquid ejecting apparatus, and the liquid ejecting apparatus may include one liquid ejecting apparatus and more than one liquid ejecting apparatus, and the case of one liquid ejecting apparatus is shown in fig. 1.
According to the spraying system provided by the embodiment of the invention, the flow data and the pressure data in the pipeline passage are detected through the flow detection device and the pressure detection device, whether the spraying system breaks down or not is detected based on the flow data and the pressure data, and the corresponding alarm signal is output.
Moreover, the outflow of the solution in the liquid storage device can be controlled in real time through the pressure detection device and the flow detection device, the accurate control of the solution spraying is achieved, and the device can be used for fire fighting, plant protection, dust removal, dust suppression and other operations.
When the spraying system comprises a plurality of branches, branch reference solution flow data information in each branch pipeline is determined according to the measured solution pressure data information, and the branch reference solution flow data information on each branch is accumulated to obtain reference solution flow data information, in one embodiment, fault judgment can be carried out by comparing the measured solution flow data information with the reference solution flow data information, the calculation process is simple and visual, and compared with the scheme that a group of pressure detection devices and flow detection devices are arranged on each branch, the installation quantity of the flow detection devices and the pressure detection devices is reduced, and the installation cost is reduced.
In one embodiment, the flow detection device and the pressure detection device are both disposed on the branch pipeline, each liquid spraying device is correspondingly provided with a pressure detection device and a flow detection device, the schematic structural diagram is shown in fig. 3, the branch measured solution pressure data information measured by each pressure detection device is received, the branch measured solution flow data information measured by each flow detection device is received, the branch reference solution flow data information corresponding to the measured pressure data of each branch is obtained according to the relationship between the solution pressure data information and the solution flow data information, the branch measured solution flow data information on the corresponding branch is compared with the branch reference solution flow data information to determine whether the branch is faulty or not, or the solution flow data information in a certain period of time is converted into the volume of the solution, and then the comparison is performed to determine whether the branch is faulty or not, the embodiment of the invention is mainly used for determining whether the area from the flow detection device to the spray head end of the liquid spraying device has a fault or not, and carrying out fault judgment based on the measured solution pressure data information and the measured solution flow data information.
In one embodiment, the spraying system includes a plurality of liquid spraying devices, that is, the pipeline has a plurality of branch pipelines, the pressure detecting device is disposed on the main pipeline or the branch pipeline of the spraying system, the flow detecting device is disposed on the branch pipeline of the spraying system, and the branch measured solution flow data information collected by the flow detecting device disposed on each branch is obtained.
According to the embodiment of the invention, the flow detection device is arranged on each branch pipeline, and branch spraying fault judgment is carried out based on the measured solution flow data information and the reference solution flow data information on each branch, so that the accuracy of the spraying fault judgment is improved, and the position of the branch with the spraying fault can be determined.
Specifically, the pressure detection device is arranged on the main pipeline, the flow detection devices are arranged on the branch pipelines, namely, each liquid spraying device is correspondingly provided with one flow detection device, the branch reference solution flow data information is obtained according to the measured solution pressure data information measured by the pressure detection device on the main pipeline and the relation between the solution pressure data information and the solution flow data information, the branch measurement solution flow data information collected by the flow detection device arranged on the branch pipeline is obtained, and whether the spraying system breaks down or not is determined based on the branch reference solution flow data information and the branch measurement solution flow data information. Or, the flow detection device is arranged on the main pipeline, the pressure detection device is arranged on the branch pipelines, namely, each liquid spraying device is correspondingly provided with one pressure detection device, the pressure detection device is arranged in the downstream pipeline of the flow detection device, the branch reference solution flow data information corresponding to the measured pressure data acquired by the pressure detection device arranged in each branch pipeline is acquired based on the relation between the solution pressure data information and the solution flow data information, the branch reference solution flow data information is accumulated to acquire the reference solution flow data information, the measured solution flow data information acquired by the flow detection device arranged on the main pipeline is compared with the reference solution flow data information, whether the spraying system has a fault or not is determined according to the comparison result, the scheme provided by the embodiment is compared with the scheme that the flow detection device and the pressure detection device are arranged on the main pipeline, the detection precision is high, and compared with the scheme that the flow detection device and the pressure detection device are arranged on the branch pipeline, the use number of the flow detection device is reduced, and the cost of the whole spraying system is reduced. The solutions provided by the two embodiments are the compromise solutions of the two embodiments, and both are within the protection scope of the present invention.
In one embodiment, the spraying system further comprises at least one switch device for connecting or closing the pipelines, and the switch device is arranged on the main pipeline or/and arranged on each branch pipeline. In particular, a switching device, which may be a switching valve, is provided on the main pipe or/and on each branch pipe. Preferably, the switch device is electrically connected with the control device so as to receive and respond to the command of the control device to carry out the operation of communicating or closing the pipeline.
In one embodiment, the liquid spraying device comprises a telescopic spray rod and spray heads arranged at the end of the spray rod, and the spray rod can be telescopic according to the area of actual spraying operation so as to adapt to different types of operation. The spray head in the liquid spraying device can be in different types, the spray flow of the spray heads in different types is different under the same pressure, the spray head types in the spraying system can be the same or different, and the embodiment of the invention preferably comprises the spray heads in different types so as to adapt to different operation requirements.
Preferably, the liquid spraying devices are installed according to a preset rule, each liquid spraying device is provided with a corresponding serial number, the serial number and the corresponding position of each liquid spraying device are stored in the control device electrically connected with the liquid spraying device in advance, and the positioning and the identification of each liquid spraying device are realized, so that the fault position can be quickly and accurately determined when the spraying system is in fault.
The preset rule may be a fixed shape, such as a plurality of the liquid ejecting apparatuses arranged in a row or a circular shape. The arrangement of the liquid spraying devices can be non-fixed, for example, the arrangement positions of the liquid spraying devices can be adjusted according to the density of the operation targets in the operation area, and the rearranged positions and the serial numbers of the liquid spraying devices are transmitted to the control device, so that the control device can accurately lock the fault positions, and the maintenance work can be smoothly carried out.
Control device and stock solution device, pressure device, flow detection device, pressure detection device pass through wired or wireless mode electric connection, control device receives the data acquisition of pressure device, flow detection device and pressure detection device conveying, control device still establishes communication with cloud ware and intelligent terminal to report an emergency and ask for help or increased vigilance information transmission to arouse operating personnel's attention to the terminal, it is timely right sprinkling system maintains, warning information includes that sprinkling system breaks down and/or fault type and/or fault location, realizes the automated inspection of sprinkling system trouble, has improved sprinkling system's intelligent degree.
Further, the embodiment of the invention also provides spraying equipment, which comprises the spraying system in any technical scheme, and the spraying system is assembled on the spraying equipment. In one embodiment, the spraying system is detachably assembled on the spraying system, the spraying system is used for spraying agricultural liquid medicine, fire-fighting materials, dust suppressant, dedusting agent, snow remover and the like, the fire-fighting materials can be solutions, powders and the like, and the substances used for fire fighting can be sprayed out through the spray head, and similarly, the dust suppressant and the snow remover are not limited in the solution range.
Further, an embodiment of the present invention further provides a method for detecting a fault of a spraying system, where the method is applicable to the spraying system according to any one of the above schemes, and the method includes the following steps, and a schematic flow diagram of the method is shown in fig. 4:
s310, a control device of the spraying system receives measured solution flow data information and measured solution pressure data information which are acquired by a flow device and a pressure detection device;
s320, obtaining reference solution flow data information corresponding to the measured solution pressure data information according to the relation between the solution pressure data information and the solution flow data information;
s330, judging whether the spraying system has a spraying fault or not based on the measured solution flow data information and the reference solution flow data information;
s340, when the spraying system has spraying faults, outputting alarm information representing the spraying faults of the spraying system.
When the flow detection device is arranged in the main pipeline passage and the pressure detection devices are arranged in the main pipeline or respectively arranged on the branches, the pressure data measured by the pressure detection device is measured solution pressure data information, the flow data measured by the flow detection device is measured solution flow data information, branch reference solution flow data information corresponding to each branch nozzle is obtained according to the relationship between the pre-calibrated solution pressure data information and the solution flow data information, the branch reference solution flow data information is obtained by adding the branch reference solution flow data information and then is compared with the measured solution flow data information for fault judgment. When the flow detection device is arranged in a branch pipeline, pressure data measured by the pressure detection device and the flow detection device and solution flow data information measured by each branch are obtained, branch reference solution flow data information corresponding to the solution pressure data information measured by each branch is obtained according to the relationship between the solution pressure data information and the solution flow data information calibrated in advance, the branch measured solution flow data information on the corresponding branch is compared with the branch reference solution flow data information, whether the branch is in fault or not is determined, or the solution flow data information is converted into the volume of the solution, and then comparison is carried out to determine whether the branch is in fault or not.
According to the method for detecting the fault of the spraying system, the actually measured flow data is compared with the calculated reference solution flow data information, whether the spraying system has the fault or not is judged according to the comparison result, whether the spraying system has the fault or not can be judged without a complex calculation processing process, the energy consumption of the system is reduced, the alarm information for representing the fault of the spraying system is sent out, and related personnel can find the abnormity of the spraying system in time and carry out repair operation. And because the fault detection process is carried out in real time, related personnel can record the exact position of the spraying fault according to the fault time of the spraying system by combining the positioning system, so that the area can be subjected to secondary spraying subsequently.
In one embodiment, the step of obtaining the reference solution flow data information corresponding to the measured solution pressure data information according to the relationship between the solution pressure data information and the solution flow data information includes:
and determining reference solution flow data information corresponding to the measured solution pressure data information based on the relationship between the pre-calibrated solution pressure data information and the solution flow data information.
In one embodiment, the step of determining the reference solution flow data information corresponding to the measured solution pressure data information based on the relationship between the pre-calibrated solution pressure data information and the solution flow data information includes S410, S420, and S430, a flow chart of which is shown in fig. 5,
s410, obtaining a type database calibrated for different types of liquid spraying devices, wherein a plurality of groups of different pressure data and corresponding flow data corresponding to the liquid spraying devices are stored in the type database;
s420, determining the type of the liquid spraying device, calling a corresponding type database according to the type of the liquid spraying device, and traversing currently obtained measured solution pressure data information in the type database;
s430, if the pressure data which is the same as the currently obtained measured solution pressure data information is retrieved from the type database, reference solution flow data information corresponding to the pressure data stored in the type database is called; and if the pressure data which is the same as the currently obtained measured solution pressure data information cannot be retrieved in the type database, calculating reference solution flow data information corresponding to the measured solution pressure data information by utilizing an interpolation algorithm based on the type database.
The different types of liquid ejecting apparatuses include different types of heads. The method comprises the steps that under the same pressure data, the types of spray heads are different, the information of solution flow data passing through the spray heads is different, measurement is conducted on multiple different spray head types, the flow data corresponding to the spray heads in different pressure data are measured in advance according to each different spray head type, the measurement results are stored in a database, and the database corresponding to the liquid spraying devices of different types is a type database.
In one embodiment, the expression form of the database is preferably a table, for each type of spray head, a corresponding relationship between solution pressure data information and solution flow data information is respectively established and stored in the table, and calibrated data is stored in the form of a table, as shown in table 1, calibration tables established for different types of spray heads are referred to as a type database:
TABLE 1 calibration table for solution pressure data information and solution flow data information of spray head
| Pressure (Pa) | P1 | P2 | … | Pa | Pb | … | Pn |
| Flow (L/min) | L1 | L2 | … | La | Lb | … | Ln |
The method comprises the steps of obtaining the type of a spray head of each branch road spray device, manually setting or selecting the type of the spray head when the spray head is replaced, calling a corresponding type database in the database according to the type of the spray head in the spray device, traversing currently obtained measured solution pressure data information in the type database, calling reference solution flow data information corresponding to the pressure data stored in the type database if the pressure data identical to the currently obtained measured solution pressure data information is searched in the type database, and calculating the reference solution flow data information corresponding to the measured solution pressure data information by utilizing an interpolation algorithm based on the type database if the pressure data identical to the currently obtained measured solution pressure data information cannot be searched in the type database.
Specifically, if the currently obtained measured solution pressure data information is not stored in the type database, the reference solution flow data information corresponding to the measured solution pressure data information may be calculated by an interpolation algorithm, where the interpolation algorithm includes linear interpolation or nonlinear interpolation, and if the currently obtained measured solution pressure data information is P, Pa < P < Pb in combination with table 1, a calculation formula for calculating the reference solution flow data information L corresponding to the measured solution pressure data information by the linear interpolation algorithm is:
the calculation formula for calculating the reference solution flow data information L corresponding to the measured solution pressure data information P by utilizing the nonlinear interpolation algorithm is as follows:
in one embodiment, the process of determining whether the spraying system has a spraying fault based on the measured solution flow data information and the reference solution flow data information is as follows: and acquiring the pressure data information of the measured solution acquired by the pressure detection device, and acquiring the data information of the branch reference solution flow corresponding to each liquid spraying device according to the type of the spray head in each liquid spraying device and a calibration table calibrated according to the type of the spray head. If the flow detection device is arranged on the main pipeline, accumulating the branch reference solution flow data information on each branch to obtain reference solution flow data information, and comparing the measured solution flow data information on the main pipeline with the accumulated reference solution flow data information to determine whether the spraying system has a fault. If the flow detection device is arranged on each branch pipeline, branch measured solution flow data information on each branch pipeline is collected, and the branch reference solution flow data information and the branch measured solution flow data information on the corresponding branch are compared to determine whether the branch is in fault.
Further, the present invention provides an embodiment, wherein the step of determining whether a spraying fault occurs in the spraying system based on the measured solution flow data information and the reference solution flow data information is shown in fig. 6, and the flow chart includes:
s510, respectively determining the volume of the measured solution corresponding to the measured solution flow data information and the volume of the reference solution corresponding to the reference solution flow data information in the same preset time period;
s520, judging whether the spraying system has spraying faults or not according to the difference value of the volume of the measured solution and the volume of the reference solution.
In one embodiment, the step of obtaining the corresponding measured solution volume and reference solution volume according to the measured solution flow data information and the reference solution flow data information comprises: integrating the measured solution flow data information in a preset time period to obtain the measured solution volume in the preset time period, integrating the reference solution flow data information in the preset time period to obtain the reference solution volume in the preset time period, wherein the integral formula based on the time period is as follows
The time period is [ a, b]And f (L) is measured solution flow data information or reference solution flow data information, and the measured solution volume and the reference solution volume in the time period are respectively calculated according to the integral formula.
In one embodiment, the step of determining whether the spraying system has a spraying failure according to the difference between the measured solution volume and the reference solution volume includes: when the flow detection device and the pressure detection device are free of faults, if the difference value between the volume of the measurement solution and the volume of the reference solution is within a preset error range, the spraying system is free of spraying faults, and if the difference value between the volume of the measurement solution and the volume of the reference solution exceeds the preset error range, the spraying system is free of spraying faults.
The flow detection device and the pressure detection device are not in fault on the assumption premise, that is, the flow data and the pressure data acquired by the flow detection device and the pressure detection device are not in error, the flow detection device and the pressure detection device work normally, the error range can be set manually according to the measurement precision, the difference value between the volume of the measurement solution and the volume of the reference solution is within the error range, the spraying system is not in spraying fault, if the difference value between the volume of the measurement solution and the volume of the reference solution exceeds the preset error range, the volume of the measurement solution is far smaller than the volume of the reference solution or the volume of the measurement solution is far larger than the volume of the reference solution, and the spraying fault of the spraying system is determined if any one of the situations occurs.
According to the embodiment of the invention, the solution flow data information is converted into the solution volume by using an integral algorithm and is compared to determine whether the spraying system has a fault, which is equivalent to filtering the measured data, so that the fault judgment accuracy is improved.
Further, after the spraying system is determined to have a spraying fault, warning information is sent to the terminal which is in contact with the control system, so that a terminal holder can know the condition of the spraying system in time and make corresponding repair operation.
Further, an embodiment of the present invention further provides a method for determining a fault type of a spraying system, where a schematic flow diagram of the method is shown in fig. 7, and the method includes:
s610, determining that the spraying system has spraying faults according to the fault detection method in any technical scheme;
s620, respectively obtaining a first measurement precision of the volume of the measurement solution and a second measurement precision of the volume of the reference solution, and obtaining a measurement range of the volume of the measurement solution and a reference range of the volume of the reference solution according to the first measurement precision and the second measurement precision;
s630, if the flow detection device has no fault, when the minimum value of the measurement range is larger than the maximum value of the reference range, the control device outputs a leakage alarm signal for representing that the spraying system has a leakage fault, and when the maximum value of the measurement range is smaller than the minimum value of the reference range, the control device outputs a blockage alarm signal for representing that the spraying system has a blockage fault;
and S640, if the liquid spraying device has no fault, the measuring range and the reference range have no intersection, and the control device outputs a flow alarm signal for representing that the flow detection device has a fault.
Specifically, the measurement precision dm of the reference solution volume Vm is obtained, the measurement precision dc of the measurement solution volume Vc is obtained, the reference range of the reference solution volume is (Vm-dm, Vm + dm), the measurement range of the measurement solution volume is (Vc-dc, Vc + dc), and the fault type of the spraying system is determined according to the intersection condition of the reference range and the measurement range.
If the (Vm-dm, Vm + dm) and the (Vc-dc, Vc + dc) have intersection, namely the Vm + dm is larger than the Vc-dc and the Vm-dm is smaller than the Vc + dc, the fact that the flowmeter and the sprayer are not in fault is judged, and the control system outputs information representing normal operation of the spraying system at regular time.
And if the flow detection device has no fault, if Vm + dm < Vc-dc, determining that the liquid spraying device leaks, and outputting leakage alarm information representing that the spraying system has a leakage fault to a cloud server end or/and a terminal associated with the cloud server end by the control device.
Under the same assumption condition, the flow detection device has no fault, if Vm-dm > Vc + dc, the liquid spraying device is determined to be blocked, and the control device outputs blocking alarm information representing the blocking fault of the spraying system to the cloud server terminal or/and the terminal associated with the cloud server terminal.
The method for determining the fault type of the spraying system further comprises the following steps: assuming that the sprinkler device is not faulty, the control device outputs a flow alarm signal indicating that the flow detection device is faulty when the measurement range is not intersected with the reference range.
According to the embodiment of the invention, the measurement range of the volume of the measurement solution is compared with the reference range of the volume of the reference solution, so that when the flow detection device has no fault, whether the fault type is leakage or blockage of the liquid spraying device is judged, and then a warning signal is sent to the server and/or the cloud end associated with the fault type, so that the fault detection precision is improved.
Further, the method for determining the fault type of the spraying system further comprises the following steps: comparing the flow of the same type of spray heads, if the spraying system has a leakage fault, determining that the liquid spraying device with the larger branch flow has leakage, wherein the leakage warning signal comprises the serial number and the position information of the branch liquid spraying device, if the spraying system has a blockage fault, determining that the liquid spraying device with the smaller branch flow has blockage, and the blockage warning signal comprises the serial number and the position information of the branch liquid spraying device.
When the number of the liquid spraying devices of the same type of spray head is more than three, the liquid spraying device with the larger branch flow at least comprises the liquid spraying device with the largest branch flow, and the liquid spraying device with the smaller branch flow at least comprises the liquid spraying device with the smallest branch flow.
Further, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed, the steps of the method for detecting a remaining amount of the stored solution according to any one of the above technical solutions are implemented.
The computer-readable storage medium may be a computer program product, for example, in the form of a memory, which may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read only memory), an EPROM, a hard disk, or a ROM. The memory has a memory space for storing program code for performing the method steps described in the above-mentioned solution. For example, the memory space in which the program code is stored may store program code for implementing the various steps in the above methods, respectively, which may be read from or written to one or more computer program products. These computer program products comprise a program code carrier such as a hard disk, a memory card or a floppy disk. Such computer program products are typically portable or fixed storage units. The memory unit may have memory segments, memory spaces, etc. similarly arranged to the memory. The program code may be compressed, for example, in a suitable form. Typically, the memory unit comprises computer readable code for performing the steps of the method of the invention, i.e. code that can be read by a processor such as a computer, which when run by a computing device causes the computing device to perform the steps of the method described above.
Further, an embodiment of the present invention further provides a mobile terminal, including a processor and a memory, where the memory is used to store a computer program, and the computer program, when executed by the processor, implements the steps of the spraying system fault detection method according to any one of the above technical solutions, or implements the steps of the spraying system fault type determination method according to any one of the above technical solutions.
Furthermore, an embodiment of the present invention further provides a spraying operation device, the computer-readable storage medium, or the mobile terminal.
The spraying operation terminal can also be a motor device such as an unmanned aerial vehicle, an unmanned vehicle and a fire engine.
The foregoing is only a partial 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 (13)
1. A spraying system is characterized by comprising a liquid storage device, a control device, a flow detection device, a pressure detection device, a pressurization device and at least one liquid spraying device, wherein the liquid storage device, the pressurization device and the at least one liquid spraying device are communicated through a pipeline, the flow detection device and the pressure detection device are connected in series in a pipeline passage to correspondingly detect flow data and pressure data in the pipeline passage, and the control device is electrically connected with the flow detection device and the pressure detection device respectively to detect faults of the spraying system and output corresponding alarm signals based on the flow data and the pressure data.
2. Sprinkling system according to claim 1, wherein the conduits comprise a main conduit and a branch conduit, the flow detection means and/or the pressure detection means being provided on the main conduit or on the branch conduit.
3. The sprinkler system according to claim 1, wherein the pressure detection device is disposed in a conduit downstream of the flow detection device.
4. The spraying system of claim 2, further comprising: at least one switching device for communicating or closing the pipelines is arranged on the main pipeline or/and each branch pipeline.
5. The spraying system of claim 1 wherein said spray means comprises a retractable spray bar and spray heads disposed at the ends of said spray bar.
6. A spraying device comprising a spraying system as claimed in any one of claims 1 to 5 fitted to a spraying device.
7. A method of fault detection of a sprinkling system, suitable for use in a sprinkling system according to any one of claims 1 to 5, characterized in that the method comprises the steps of: the control device of the spraying system receives measured solution flow data information and measured solution pressure data information which are acquired by the flow detection device and the pressure detection device;
obtaining reference solution flow data information corresponding to the measured solution pressure data information according to the relation between the solution pressure data information and the solution flow data information; judging whether the spraying system has a spraying fault or not based on the measured solution flow data information and the reference solution flow data information; and when the spraying system has spraying faults, outputting alarm information representing the spraying faults of the spraying system.
8. The sprinkler system fault detection method of claim 7, wherein the step of obtaining reference solution flow data information corresponding to the measured solution pressure data information from a relationship between solution pressure data information and solution flow data information comprises:
and determining reference solution flow data information corresponding to the measured solution pressure data information based on the relationship between the pre-calibrated solution pressure data information and the solution flow data information.
9. The method of claim 8, wherein the step of determining the reference solution flow data information corresponding to the measured solution pressure data information based on a pre-calibrated relationship between the solution pressure data information and the solution flow data information comprises:
obtaining a type database calibrated for different types of liquid spraying devices, wherein a plurality of groups of different pressure data and corresponding flow data corresponding to the type of liquid spraying devices are stored in the type database;
determining the type of the liquid spraying device, calling a corresponding type database according to the type of the liquid spraying device, and traversing currently obtained measured solution pressure data information in the type database;
if the pressure data which is the same as the currently obtained measured solution pressure data information is retrieved from the type database, reference solution flow data information corresponding to the pressure data stored in the type database is called; and if the pressure data which is the same as the currently obtained measured solution pressure data information cannot be retrieved in the type database, calculating reference solution flow data information corresponding to the measured solution pressure data information by utilizing an interpolation algorithm based on the type database.
10. The fault detection method of claim 7, wherein the step of determining whether a spray fault has occurred in the spray system based on the measured solution flow data information and the reference solution flow data information comprises:
respectively determining the volume of the measured solution corresponding to the measured solution flow data information and the volume of the reference solution corresponding to the reference solution flow data information within the same preset time period;
and judging whether the spraying system has a spraying fault according to the difference value of the volume of the measured solution and the volume of the reference solution.
11. The method according to claim 10, wherein the step of determining the volume of the measurement solution corresponding to the measurement solution flow data information and the volume of the reference solution corresponding to the reference solution flow data information within the same preset time period respectively comprises:
and respectively integrating the measured solution flow data information in the preset time period and integrating the reference solution flow data information in the preset time period to obtain the corresponding measured solution volume and the reference solution volume.
12. The method of claim 10, wherein the step of determining whether the spraying system has a spraying failure based on the difference between the measured solution volume and the reference solution volume comprises:
when the flow detection device and the pressure detection device are free of faults, if the difference value between the volume of the measurement solution and the volume of the reference solution is within a preset error range, the spraying system is free of spraying faults, and if the difference value between the volume of the measurement solution and the volume of the reference solution exceeds the preset error range, the spraying system is free of spraying faults.
13. A method of determining a type of sprinkler system failure, comprising:
the fault detection method of any one of claims 7 to 12 determining that the spraying system is malfunctioning;
respectively obtaining a first measurement precision of the volume of the measurement solution and a second measurement precision of the volume of the reference solution, and respectively obtaining a measurement range of the volume of the measurement solution and a reference range of the volume of the reference solution according to the first measurement precision and the second measurement precision;
if the flow detection device has no fault, when the minimum value of the measurement range is larger than the maximum value of the reference range, the control device outputs a leakage alarm signal for representing that the spraying system has a leakage fault, and when the maximum value of the measurement range is smaller than the minimum value of the reference range, the control device outputs a blockage alarm signal for representing that the spraying system has a blockage fault.
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