CN112595914A - Fault detection method and fault detection device for water treatment equipment - Google Patents
Fault detection method and fault detection device for water treatment equipment Download PDFInfo
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- CN112595914A CN112595914A CN202011454355.XA CN202011454355A CN112595914A CN 112595914 A CN112595914 A CN 112595914A CN 202011454355 A CN202011454355 A CN 202011454355A CN 112595914 A CN112595914 A CN 112595914A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 127
- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 claims description 19
- 230000005611 electricity Effects 0.000 description 17
- 238000010586 diagram Methods 0.000 description 5
- 244000005700 microbiome Species 0.000 description 4
- 230000007257 malfunction Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
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Abstract
The embodiment of the invention relates to a fault detection method and a fault detection device of water treatment equipment. The fault detection method comprises the following steps: detecting a first current value I1 of the water treatment equipment in a first time period; determining an operating state of the first device according to the first current value I1; detecting a second current value I2 of the water treatment equipment in a second time period; determining an operating state of the second device according to the first current value I1 and the second current value I2; detecting a third current value I3 of the water treatment equipment in a third time period; determining an operating state of the third device according to the second current value I2 and the third current value I3; detecting a fourth current value I4 of the water treatment device in a fourth time period; the operating state of the second component and/or the third component is determined as a function of the fourth current value I4. The fault detection method can quickly determine the fault point of the water treatment equipment.
Description
Technical Field
The present disclosure relates to the field of water treatment equipment, and in particular, to a fault detection method and a fault detection apparatus for a water treatment equipment.
Background
In the sewage treatment technology, microorganisms in sewage biological treatment can play a role only by maintaining certain activity, and when a water treatment device breaks down, the growth environment of the microorganisms can be changed, so that the activity of the microorganisms is influenced. The acclimation process of the microorganisms is long in time consumption and high in technical requirement, and the situation should be avoided as much as possible in engineering practice.
In the prior art, when water treatment facilities broke down, equipment self can produce alarm information, but this alarm information can not indicate the fault point certainly, and personnel troubleshooting trouble is consuming time longer, is unfavorable for the quick maintenance of equipment.
Disclosure of Invention
In order to solve the technical problem or at least partially solve the technical problem, the present disclosure provides a fault detection method and a fault detection apparatus for a water treatment device, which can quickly detect a fault point of the water treatment device.
In a first aspect, an embodiment of the present invention provides a fault detection method for a water treatment apparatus, which is used for fault detection of the water treatment apparatus; the water treatment apparatus includes: a first device, a second device, and a third device; during a first time period, the first device operates independently; during a second time period, the first device and the second device are both in an operating state; in a third time period, the first device, the second device and the third device are operated in an operation state; during a fourth time period, the second device and the third device are both in an operational state;
the fault detection method comprises the following steps:
detecting a first current value I1 of the water treatment device during the first time period;
determining an operating state of the first device according to the first current value I1;
detecting a second current value I2 of the water treatment device in the second time period;
determining an operating state of the second device from the first current value I1 and the second current value I2;
detecting a third current value I3 of the water treatment device in the third time period;
determining an operating state of the third device from the second current value I2 and the third current value I3;
detecting a fourth current value I4 of the water treatment device during the fourth time period;
determining an operating state of the second device and/or the third device based on the fourth current value I4.
Optionally, the determining the operation state of the first device according to the first current value I1 includes:
if the first current value I1 is greater than a first current threshold value Ith1 or less than a second current threshold value Ith2, determining that the first device has a fault; if the first current value I1 is less than or equal to the first current threshold value Ith1 and greater than or equal to the second current threshold value Ith2, the first device is determined to be working normally.
Optionally, the determining the operating state of the second device according to the first current value I1 and the second current value I2 comprises:
if the first current value I1 is less than or equal to the first current threshold value Ith1 and greater than or equal to the second current threshold value Ith2, and the second current value I2 is greater than a third current threshold value Ith3 or less than a fourth current threshold value Ith4, determining that the second device fails; and if the second current value I2 is less than or equal to the third current threshold Ith3 and greater than or equal to the fourth current threshold Ith4, determining that the second device works normally.
Optionally, the determining the operation state of the third device according to the second current value I2 and the third current value I3 comprises:
if the second current value I2 is less than or equal to the third current threshold Ith3 and greater than or equal to the fourth current threshold Ith4, and the third current value I3 is greater than a fifth current threshold Ith5 or less than a sixth current threshold Ith7, determining that the third device fails; if the third current value I3 is less than or equal to the fifth current threshold Ith5 and greater than or equal to the sixth current threshold Ith6, it is determined that the third device is operating normally.
The determining the operation state of the second device and/or the third device according to the fourth current value I4 includes:
optionally, if the fourth current value I4 is greater than Ith5-Ith1 or less than Ith6-Ith2, determining that the second device and/or the third device fails; and if the fourth current value I4 is less than or equal to Ith5-Ith1 and greater than or equal to Ith6-Ith2, determining that the second device and the third device work normally.
Optionally, the determining that the second device and/or the third device is malfunctioning comprises:
stopping the operation of the third device, and detecting a fifth current value I5 of the water treatment equipment;
if the fifth current value I5 is greater than Ith3-Ith1 or less than Ith4-Ith2, determining that the second device is failed; and if the fifth current value I5 is greater than or equal to Ith3-Ith1 and less than or equal to Ith4-Ith2, determining that the second device works normally and the third device fails.
Optionally, the fault detection method further includes:
stopping the operation of the second device, and detecting a sixth current value I6 of the water treatment equipment;
if the sixth current value I6 is greater than Ith5-Ith3 or less than Ith6-Ith4, determining that the third device is failed; if the sixth current value I6 is less than or equal to Ith5-Ith3 and greater than or equal to Ith6-Ith4, the third device operates normally.
In a second aspect, the embodiment of the present invention further provides a fault detection device for a water treatment apparatus, configured to execute any one of the fault detection methods provided in the first aspect;
the fault detection device comprises an electric quantity metering module and a main control chip; the input end of the electric quantity metering module is electrically connected with the water treatment equipment, and the output end of the electric quantity metering module is electrically connected with the input end of the main control chip;
the electric quantity metering module is used for detecting a first current value I1 of the water treatment equipment in a first time period; detecting a second current value I2 of the water treatment device in a second time period; detecting a third current value I3 of the water treatment equipment in a third time period; detecting a fourth current value I4 of the water treatment device during a fourth time period;
the main control chip is used for determining the running state of the first device according to the first current value I1; determining an operating state of a second device according to the first current value I1 and the second current value I2; determining an operating state of a third device from the second current value I2 and the third current value I3; determining an operating state of the second device and/or the third device based on the fourth current value I4.
Optionally, the electricity metering module is further configured to detect a fifth current value I5 of the water treatment apparatus when the third device stops operating;
the main control chip is also used for controlling the third device to stop running; for the fifth current value I5 being greater than Ith3-Ith1 or less than Ith4-Ith2, determining that the second device is malfunctioning; and when the fifth current value I5 is greater than or equal to Ith3-Ith1 and less than or equal to Ith4-Ith2, determining that the second device normally operates and the third device fails.
Optionally, the electricity metering module is further configured to detect a sixth current value I6 of the water treatment apparatus when the second device stops operating;
the main control chip is also used for controlling the second device to stop running; for the sixth current value I6 being greater than Ith5-Ith3 or less than Ith6-Ith4, determining that the third device is malfunctioning; when the sixth current value I6 is less than or equal to Ith5-Ith3 and greater than or equal to Ith6-Ith4, the third device operates normally.
Compared with the prior art, the technical scheme provided by the embodiment of the invention has the following advantages:
the embodiment of the invention provides a technical scheme that the operation state of a first device is determined according to a first current value I1 by detecting a first current value I1 of the water treatment equipment in a first time period, the operation state of a second device is determined according to the first current value I1 and a second current value I2 by detecting a second current value I2 of the water treatment equipment in a second time period, the operation state of the third device is determined according to a third current value I3 of the water treatment equipment in a third time period, the operation state of the third device is determined according to the second current value I2 and a third current value I3 by detecting a fourth current value I4 of the water treatment equipment in a fourth time period, and the operation state of the second device and/or the third device is determined according to a fourth current value I4. According to the embodiment of the invention, the specific fault point of the water treatment equipment 100 in the period can be determined by the current value detected in the period and the determined device operation result in the previous period, so that the operation state of each device can be determined in real time in the operation process of the water treatment equipment, the device with the fault can be rapidly determined when the water treatment equipment has the fault, and the fault point of the water treatment equipment can be rapidly determined.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a water treatment apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating the operation times of various components in a water treatment apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating a method for detecting faults of a water treatment apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart illustrating a method for detecting faults of another water treatment apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a fault detection device of a water treatment apparatus according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
Fig. 1 is a schematic structural diagram of a water treatment apparatus according to an embodiment of the present invention, and as shown in fig. 1, the water treatment apparatus 100 includes: a first device 110, a second device 120, and a third device 130; during a first time period, the first device 110 operates independently; during a second time period, both first device 110 and second device 120 are in an operational state; during a third time period, the first device 110, the second device 120, and the third device 130 are all in operation; during the fourth time period, both the second device 120 and the third device 130 are in an operational state.
Exemplarily, as shown in fig. 1, the first device 110 is a blower, the second device 120 is a water pump, and the third device 130 is a disinfection device, and the first device 110, the second device 120, and the third device 130 are connected to a water pipe, an air pipe, and the like through an electromagnetic valve 140. The rated voltage of the first device 110, the second device 120 and the third device 130 is 220V, the rated power of the first device 110 is 700W, the rated power of the second device 120 is 240W, and the rated power of the third device 130 is 500W. The embodiment of the present invention is only exemplified by a blower, a water pump and a disinfection device, and in practical applications, the first device 110, the second device 120 and the third device 130 are not limited to a blower, a water pump and a disinfection device, and may be other types of devices, and the types of the first device 110, the second device 120 and the third device 130 may be the same or different. Fig. 1 only illustrates the number of the first device 110, the second device 120, and the third device 130, and the number of the first device 110, the second device 120, and the third device 130 may be flexibly set according to actual requirements in practical applications.
Exemplarily, fig. 2 is a schematic diagram of operation time of each device in a water treatment apparatus according to an embodiment of the present invention, as shown in fig. 2, in a cycle T, the first device 110 operates in a time period of 0-T1 and stops operating in a time period of T1-T, the second device 120 stops operating in a time period of 0-T2 and operates in a time period of T2-T, the third device 130 stops operating in a time period of 0-T3 and operates in a time period of T3-T, and T3> T2> T1. Then first device 110 operates independently during the time period 0-T2, i.e., the first time period, first device 110 and second device 120 operate simultaneously during the time period T2-T3, i.e., the second time period, first device 110, second device 120, and third device 130 operate simultaneously during the time period T3-T1, i.e., the third time period, and second device 120 and third device 130 operate simultaneously during the time period T1-T, i.e., the fourth time period.
Fig. 3 is a schematic flow chart of a fault detection method for a water treatment apparatus according to an embodiment of the present invention, and as shown in fig. 3, the fault detection method includes the specific steps of:
and S110, detecting a first current value I1 of the water treatment equipment in a first time period.
Illustratively, during the time period 0-T2 shown in fig. 2, i.e., the first time period, only the first device 110 is operated, and the detected first current value I1 of the water treatment apparatus is the current value output by the first device 110.
And S120, determining the operation state of the first device according to the first current value I1.
Specifically, in the first time period, if the first device 110 operates normally, the operating current value thereof is within a certain current value interval, and when the current value of the first device 110 is not within the certain current value interval, it indicates that the first device 110 has a fault, so that whether the first device 110 has a fault or not can be determined according to the first current value I1 and the operating current range of the first device 110, and in the first time period, a specific fault point of the water treatment apparatus 100 can be determined.
And S130, detecting a second current value I2 of the water treatment equipment in a second time period.
Illustratively, during the time period T2-T3 shown in fig. 2, i.e., during the second time period, the first device 110 and the second device 120 operate together, and the detected second current value I2 of the water treatment apparatus is the sum of the current values output by the first device 110 and the second device 120.
S140, determining the operation state of the second device according to the first current value I1 and the second current value I2.
Specifically, in the second time period, if both the first device 110 and the second device 120 operate normally, the sum of the operating current values of the first device 110 and the second device 120 is within a specific current value interval, and when the sum of the current values of the first device 110 and the second device 120 is not within the specific current value interval, it indicates that the first device 110 and/or the second device 120 has a fault. Since it has been previously determined whether the first device 110 is malfunctioning, the operation state of the second device 120 can be determined, and therefore, in the second period of time, the specific point of failure of the water treatment apparatus 100 can be quickly determined based on the device operation result determined in the first period of time and the current value detected in the present period of time.
And S150, detecting a third current value I3 of the water treatment equipment in a third time period.
Illustratively, the first device 110, the second device 120 and the third device 130 operate together during the time period T3-T1 shown in fig. 2, i.e., during the third time period, and the detected third current value I3 of the water treatment apparatus is the sum of the current values output by the first device 110, the second device 120 and the third device 130.
S160, determining the operation state of the third device according to the second current value I2 and the third current value I3.
Specifically, in the third time period, if the first device 110, the second device 120, and the third device 130 all operate normally, the sum of the operating current values of the first device 110, the second device 120, and the third device 130 is within a specific current value interval, and when the sum of the current values of the first device 110, the second device 120, and the third device 130 is not within the specific current value interval, it is determined that the first device 110, the second device 120, and/or the third device 130 has a fault. Since it has been previously determined whether the first device 110 and the second device 120 are malfunctioning, the operation state of the third device 130 can be determined, and therefore, in the third time period, the specific failure point of the water treatment apparatus 100 can be quickly determined based on the device operation result determined in the second time period and the current value detected in the present time period.
And S170, detecting a fourth current value I4 of the water treatment equipment in a fourth time period.
Illustratively, during the time period T1-T shown in fig. 2, i.e., during the fourth time period, the second device 120 and the third device 130 operate together, the detected fourth current value I4 of the water treatment apparatus is the sum of the current values output by the second device 120 and the third device 130.
And S180, determining the operation state of the second device and/or the third device according to the fourth current value I4.
Specifically, during the fourth time period, if the second device 120 and the third device 130 both work normally, the sum of the working current values of the second device 120 and the third device 130 is within a specific current value interval, and when the sum of the current values of the second device 120 and the third device 130 is not within the specific current value interval, it indicates that the second device 120 and/or the third device 130 has a fault, and during the fourth time period, the specific fault point of the water treatment apparatus 100 can be quickly determined according to the current value detected during the time period.
The embodiment of the invention provides a technical scheme that the operation state of a first device is determined according to a first current value I1 by detecting a first current value I1 of the water treatment equipment in a first time period, the operation state of a second device is determined according to the first current value I1 and a second current value I2 by detecting a second current value I2 of the water treatment equipment in a second time period, the operation state of the third device is determined according to a third current value I3 of the water treatment equipment in a third time period, the operation state of the third device is determined according to the second current value I2 and a third current value I3 by detecting a fourth current value I4 of the water treatment equipment in a fourth time period, and the operation state of the second device and/or the third device is determined according to a fourth current value I4. According to the embodiment of the invention, the specific fault point of the water treatment equipment 100 in the period can be determined by the current value detected in the period and the determined device operation result in the previous period, so that the operation state of each device can be determined in real time in the operation process of the water treatment equipment, the device with the fault can be rapidly determined when the water treatment equipment has the fault, and the fault point of the water treatment equipment can be rapidly determined.
Optionally, when step S120 shown in fig. 3 is executed, the following method may be adopted, and specifically includes:
s121, if the first current value I1 is larger than a first current threshold value Ith1 or smaller than a second current threshold value Ith2, determining that the first device has a fault; if the first current value I1 is less than or equal to the first current threshold value Ith1 and greater than or equal to the second current threshold value Ith2, the first device is determined to be working normally.
Specifically, the operating current value of the first device 110 is in the range of [ Ith1, Ith2], that is, when the first current value I1 satisfies Ith1 ≦ I1 ≦ Ith2, the first device 110 is in a normal operating state; when the first current value I1 satisfies I1< Ith1 or I1> Ith2, the first device 110 malfunctions. Illustratively, if I1< Ith1, then the first device 110 has an open circuit fault; if I1> Ith2, the first device 110 is shorted. The embodiment of the invention can determine whether the first device 110 fails or not and determine the fault type of the first device 110, so that the fault point and the fault type of the water treatment equipment can be quickly determined.
Optionally, when step S140 shown in fig. 3 is executed, the following method may be adopted, and specifically includes:
s141, if the first current value I1 is less than or equal to the first current threshold Ith1 and greater than or equal to the second current threshold Ith2, and the second current value I2 is greater than a third current threshold Ith3 or less than a fourth current threshold Ith4, determining that the second device fails; if the second current value I2 is less than or equal to the third current threshold Ith3 and greater than or equal to the fourth current threshold Ith4, it is determined that the second device 120 is operating normally.
Specifically, the sum of the operating current values of the first device 110 and the second device 120 is within the interval [ Ith3, Ith4], that is, when the second current value I2 satisfies Ith3 ≦ I2 ≦ Ith4, both the first device 110 and the second device 120 are in a normal operating state. When the second current value I2 meets I2< Ith3 or I2> Ith4, the first device 110 and/or the second device 120 fails, and the first device 110 is determined to be in a normal operating state according to the condition that the first current value I1 meets Ith1 or I1 or Ith2, so that the second device 120 can be determined to be in a failure. Illustratively, if I2< Ith3, then the second device 120 has an open circuit fault; if I2> Ith4, then the second device 120 has a short circuit fault. The embodiment of the invention can determine whether the second device 120 is in failure or not and determine the failure type of the second device 120, so that the failure point and the failure type of the water treatment equipment can be quickly determined.
Optionally, when step S160 shown in fig. 3 is executed, the following method may be adopted, and specifically includes:
s161, if the second current value I2 is less than or equal to the third current threshold Ith3 and greater than or equal to the fourth current threshold Ith4, and the third current value I3 is greater than a fifth current threshold Ith5 or less than a sixth current threshold Ith7, determining that the third device has a fault; if the third current value I3 is less than or equal to the fifth current threshold Ith5 and greater than or equal to the sixth current threshold Ith6, it is determined that the third device is operating normally.
Specifically, the sum of the operating current values of the first device 110, the second device 120 and the third device 130 is within the interval [ Ith5, Ith6], that is, when the third current value I3 satisfies Ith5 ≦ I3 ≦ Ith6, the first device 110, the second device 120 and the third device 130 are all in a normal operating state. When the third current value I3 satisfies I3< Ith5 or I3> Ith6, the first device 110 and/or the second device 120 and/or the third device 130 fail, and it has been determined that both the first device 110 and the second device 120 are in a normal operating state according to the second current value I di satisfying Ith3 ≦ I2 ≦ Ith4, and thus it may be determined that the third device 130 fails. Illustratively, if I3< Ith5, then an open circuit fault occurs with the third device 130; if I3> Ith6, then the third device 130 has a short circuit fault. The embodiment of the invention can determine whether the third device 130 is in failure or not and determine the failure type of the third device 130, so that the failure point and the failure type of the water treatment equipment can be quickly determined.
Optionally, when step S180 shown in fig. 3 is executed, the following method may be adopted, and specifically includes:
s181, if the fourth current value I4 is greater than Ith5-Ith1 or less than Ith6-Ith2, determining that the second device and/or the third device is/are failed; and if the fourth current value I4 is less than or equal to Ith5-Ith1 and greater than or equal to Ith6-Ith2, determining that the second device and the third device work normally.
Specifically, on the basis of the above embodiment, the sum of the operating current values of the second device 120 and the third device 130 is within the interval [ Ith5-Ith1, Ith6-Ith2], that is, when the third current value I3 satisfies Ith5-Ith1 ≦ I4 ≦ Ith6-Ith2, both the second device 120 and the third device 130 are in the normal operating state. When fourth current value I4 satisfies I4< Ith5-Ith1 or I4> Ith6-Ith2, it may be determined that second device 120 and/or third device 130 is malfunctioning. Illustratively, if I4< Ith5-Ith1, then an open circuit fault occurs with second device 120 and/or third device 130; if I4> Ith6-Ith2, short circuit failure occurs in the second device 120 and/or the third device 130.
The embodiment of the invention can determine whether the second device 120 and/or the third device 130 has a fault or not, and can also determine the fault type of the second device 120 and/or the third device 130, so that the fault point and the fault type of the water treatment equipment can be quickly determined.
Optionally, when S181 is executed, the implementation may be specifically implemented as shown in fig. 4, where fig. 4 is a schematic flow chart of another fault detection method for water treatment equipment according to an embodiment of the present invention, and the method includes:
s210, stopping running the third device, and detecting a fifth current value I5 of the water treatment equipment.
Illustratively, during the time period T1-T shown in fig. 2, i.e., during the fourth time period, the operation of the third device 130 is stopped, only the second device 120 is operated, and the detected fifth current value I5 of the water treatment apparatus is the current value output by the second device 120.
S220, if the fifth current value I5 is greater than Ith3-Ith1 or less than Ith4-Ith2, determining that the second device fails; and if the fifth current value I5 is greater than or equal to Ith3-Ith1 and less than or equal to Ith4-Ith2, determining that the second device works normally and the third device fails.
Specifically, according to the above embodiment, it is known that the operating current value of the second device 120 is within the interval [ Ith3-Ith1, Ith4-Ith2], that is, when the fifth current I5 satisfies Ith3-Ith1 ≦ I2 ≦ Ith4-Ith2, the second device 120 is in a normal operating state, and therefore it can be determined that the third device 130 has a fault. The second device 120 fails when the fifth current I5 satisfies I5< Ith3-Ith1 or I5> Ith4-Ith 2. Illustratively, if I5< Ith3-Ith1, then the second device 120 has an open circuit fault; if I5> Ith4-Ith2, then the second device 120 has a short circuit fault. The embodiment of the invention can determine whether the second device 120 has a fault and the fault type of the second device 120, and quickly determine the fault point and the fault type of the water treatment equipment.
Optionally, with continued reference to fig. 4, after performing S220, further comprising:
and S230, stopping running the second device, and detecting a sixth current value I6 of the water treatment equipment.
Illustratively, during the time period T1-T shown in fig. 2, i.e., during the fourth time period, the operation of the second device 120 is stopped, only the third device 130 is operated, and the detected sixth current value I6 of the water treatment apparatus is the current value output by the third device 130.
S240, if the sixth current value I6 is greater than Ith5-Ith3 or less than Ith6-Ith4, determining that the third device fails; if the sixth current value I6 is less than or equal to Ith5-Ith3 and greater than or equal to Ith6-Ith4, the third device operates normally.
Specifically, according to the above embodiment, the operating current value of the third device 130 is within the interval [ Ith5-Ith3, Ith6-Ith4], that is, when the sixth current value I6 satisfies Ith5-Ith3 ≦ I6 ≦ Ith6-Ith4, the third device 130 is in the normal operating state. When the sixth current value I6 satisfies I6< Ith5-Ith3 or I6> Ith6-Ith4, the third device 130 malfunctions. Illustratively, if I6< Ith5-Ith3, then the third device 130 has an open circuit fault; if I6> Ith6-Ith4, the third device 130 is shorted. The embodiment of the invention can determine whether the third device 130 has a fault or not and the fault type of the third device 130, and quickly determine the fault point and the fault type of the water treatment equipment.
It should be noted that the embodiment of the present invention only shows that the steps S230-S240 are executed after S220, and in practical applications, the steps S230-S240 may be executed first, and then the steps S210-S220 are executed.
Based on the same inventive concept, the embodiment of the invention further provides a fault detection device for water treatment equipment, which is used for executing any fault detection method for the water treatment equipment provided by the embodiment, and has the corresponding beneficial effects of the fault detection method.
Fig. 5 is a fault detection device 200 of a water treatment apparatus according to an embodiment of the present invention, as shown in fig. 5, the fault detection device 200 includes an electric quantity metering module 210 and a main control chip 220, wherein an input end of the electric quantity metering module 210 is electrically connected to the water treatment apparatus 100, and an output end of the electric quantity metering module 110 is electrically connected to an input end of the main control chip 220.
The electricity metering module 110 is used for detecting a first current value I1 of the water treatment equipment 100 in a first time period; detecting a second current value I2 of the water treatment apparatus 100 during a second time period; detecting a third current value I3 of the water treatment apparatus 100 during a third time period; during a fourth time period, a fourth current value I4 of the water treatment apparatus 100 is detected.
The main control chip 220 is used for determining the operation state of the first device according to the first current value I1; determining an operating state of the second device according to the first current value I1 and the second current value I2; determining an operating state of the third device according to the second current value I2 and the third current value I3; the operating state of the second component and/or the third component is determined as a function of the fourth current value I4.
Specifically, the input end of the electric quantity metering module 210 is electrically connected with the total current output end of the water treatment device 100 to detect the total output current value of the water treatment device 100, the output end of the electric quantity metering module 210 is electrically connected with the input end of the main control chip 220, the electric quantity metering module 210 transmits the current value to the main control chip 220, and the main control chip 220 can display the current value and determine the operation state of each device according to the current value.
Illustratively, as shown in fig. 5, the electricity metering module 210 includes an electricity metering unit 211 and a current collecting unit 212, the current collecting unit 212 is configured to collect a total output current of the water treatment apparatus 100, an output end of the electricity metering unit 211 is electrically connected to a first input end of the electricity metering unit 211, the total output current is transmitted to the electricity metering unit 211, and the electricity metering unit 211 can meter the received current to obtain a current value.
The embodiment of the invention provides a technical scheme that the operation state of a first device is determined according to a first current value I1 by detecting a first current value I1 of the water treatment equipment in a first time period, the operation state of a second device is determined according to the first current value I1 and a second current value I2 by detecting a second current value I2 of the water treatment equipment in a second time period, the operation state of the third device is determined according to a third current value I3 of the water treatment equipment in a third time period, the operation state of the third device is determined according to the second current value I2 and a third current value I3 by detecting a fourth current value I4 of the water treatment equipment in a fourth time period, and the operation state of the second device and/or the third device is determined according to a fourth current value I4. According to the embodiment of the invention, the specific fault point of the water treatment equipment 100 in the period can be determined by the current value detected in the period and the determined device operation result in the previous period, so that the operation state of each device can be determined in real time in the operation process of the water treatment equipment, the device with the fault can be rapidly determined when the water treatment equipment has the fault, and the fault point of the water treatment equipment can be rapidly determined.
Optionally, with continued reference to fig. 5, the electricity metering module 210 further includes a voltage collecting unit 213, the voltage collecting unit 213 is configured to collect an output voltage of the water treatment apparatus 100, and an output end of the voltage collecting unit 213 is electrically connected to the second input end of the electricity metering unit 211.
Specifically, the voltage collecting unit 213 transmits the collected output voltage of the water treatment device 100 to the electricity metering unit 211, the electricity metering unit 211 can meter the received voltage to obtain a voltage value, and the main control chip 220 can also display the voltage value.
Optionally, the electricity metering module 210 is further configured to detect a fifth current value I5 of the water treatment apparatus when the third device is stopped.
The main control chip 220 is further configured to control the third device to stop operating; for the fifth current value I5 being greater than Ith3-Ith1 or less than Ith4-Ith2, determining that the second device is malfunctioning; and when the fifth current value I5 is greater than or equal to Ith3-Ith1 and less than or equal to Ith4-Ith2, determining that the second device normally operates and the third device fails.
Specifically, during the fourth time period, the main control chip 220 controls the third device 130 to stop operating, and at this time, only the second device 120 operates. The fifth current value I5 of the water treatment apparatus detected by the electricity quantity metering module 210 is the current value output by the second device 120. When the fifth current I5 satisfies Ith3-Ith1 ≦ I2 ≦ Ith4-Ith2, the second device 120 is in a normal operation state, and thus it may be determined that the third device 130 has failed. The second device 120 fails when the fifth current I5 satisfies I5< Ith3-Ith1 or I5> Ith4-Ith 2. Illustratively, if I5< Ith3-Ith1, then the second device 120 has an open circuit fault; if I5> Ith4-Ith2, then the second device 120 has a short circuit fault. The embodiment of the invention can determine whether the second device 120 has a fault and the fault type of the second device 120, and quickly determine the fault point and the fault type of the water treatment equipment.
Optionally, the electricity metering module 210 is further configured to detect a sixth current value I6 of the water treatment apparatus when the second device stops operating;
the main control chip 220 is further configured to control the second device to stop operating; for the sixth current value I6 being greater than Ith5-Ith3 or less than Ith6-Ith4, determining that the third device is malfunctioning; when the sixth current value I6 is less than or equal to Ith5-Ith3 and greater than or equal to Ith6-Ith4, the third device operates normally.
Specifically, during the fourth time period, the main control chip 220 controls the second device 120 to stop operating, and only the third device 130 operates at this time. The sixth current value I6 of the water treatment apparatus detected by the electricity metering module 210 is the current value output by the third device 130. When the sixth current value I6 satisfies Ith5-Ith3 ≦ I6 ≦ Ith6-Ith4, the third device 130 is in a normal operation state. When the sixth current value I6 satisfies I6< Ith5-Ith3 or I6> Ith6-Ith4, the third device 130 malfunctions. Illustratively, if I6< Ith5-Ith3, then the third device 130 has an open circuit fault; if I6> Ith6-Ith4, the third device 130 is shorted. The embodiment of the invention can determine whether the third device 130 has a fault or not and the fault type of the third device 130, and quickly determine the fault point and the fault type of the water treatment equipment.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A fault detection method of a water treatment device is characterized by being used for fault detection of the water treatment device; the water treatment apparatus includes: a first device, a second device, and a third device; during a first time period, the first device operates independently; during a second time period, the first device and the second device are both in an operating state; in a third time period, the first device, the second device and the third device are operated in an operation state; during a fourth time period, the second device and the third device are both in an operational state;
the fault detection method comprises the following steps:
detecting a first current value I1 of the water treatment device during the first time period;
determining an operating state of the first device according to the first current value I1;
detecting a second current value I2 of the water treatment device in the second time period;
determining an operating state of the second device from the first current value I1 and the second current value I2;
detecting a third current value I3 of the water treatment device in the third time period;
determining an operating state of the third device from the second current value I2 and the third current value I3;
detecting a fourth current value I4 of the water treatment device during the fourth time period;
determining an operating state of the second device and/or the third device based on the fourth current value I4.
2. The fault detection method of claim 1, wherein said determining an operational state of said first device from said first current value I1 comprises:
if the first current value I1 is greater than a first current threshold value Ith1 or less than a second current threshold value Ith2, determining that the first device has a fault; if the first current value I1 is less than or equal to the first current threshold value Ith1 and greater than or equal to the second current threshold value Ith2, the first device is determined to be working normally.
3. The fault detection method of claim 2, wherein said determining an operational state of said second device from said first current value I1 and said second current value I2 comprises:
if the first current value I1 is less than or equal to the first current threshold value Ith1 and greater than or equal to the second current threshold value Ith2, and the second current value I2 is greater than a third current threshold value Ith3 or less than a fourth current threshold value Ith4, determining that the second device fails; and if the second current value I2 is less than or equal to the third current threshold Ith3 and greater than or equal to the fourth current threshold Ith4, determining that the second device works normally.
4. The fault detection method of claim 3, wherein said determining an operational state of said third device from said second current value I2 and said third current value I3 comprises:
if the second current value I2 is less than or equal to the third current threshold Ith3 and greater than or equal to the fourth current threshold Ith4, and the third current value I3 is greater than a fifth current threshold Ith5 or less than a sixth current threshold Ith7, determining that the third device fails; if the third current value I3 is less than or equal to the fifth current threshold Ith5 and greater than or equal to the sixth current threshold Ith6, it is determined that the third device is operating normally.
5. The method according to claim 4, wherein the determining the operating state of the second device and/or the third device according to the fourth current value I4 comprises:
determining that the second device and/or the third device is malfunctioning if the fourth current value I4 is greater than Ith5-Ith1 or less than Ith6-Ith 2; and if the fourth current value I4 is less than or equal to Ith5-Ith1 and greater than or equal to Ith6-Ith2, determining that the second device and the third device work normally.
6. The method of claim 5, wherein the determining that the second device and/or the third device is malfunctioning comprises:
stopping the operation of the third device, and detecting a fifth current value I5 of the water treatment equipment;
if the fifth current value I5 is greater than Ith3-Ith1 or less than Ith4-Ith2, determining that the second device is failed; and if the fifth current value I5 is greater than or equal to Ith3-Ith1 and less than or equal to Ith4-Ith2, determining that the second device works normally and the third device fails.
7. The fault detection method of claim 6, further comprising:
stopping the operation of the second device, and detecting a sixth current value I6 of the water treatment equipment;
if the sixth current value I6 is greater than Ith5-Ith3 or less than Ith6-Ith4, determining that the third device is failed; if the sixth current value I6 is less than or equal to Ith5-Ith3 and greater than or equal to Ith6-Ith4, the third device operates normally.
8. A fault detection device of a water treatment apparatus for performing the fault detection method of claims 1-7;
the fault detection device comprises an electric quantity metering module and a main control chip; the input end of the electric quantity metering module is electrically connected with the water treatment equipment, and the output end of the electric quantity metering module is electrically connected with the input end of the main control chip;
the electric quantity metering module is used for detecting a first current value I1 of the water treatment equipment in a first time period; detecting a second current value I2 of the water treatment device in a second time period; detecting a third current value I3 of the water treatment equipment in a third time period; detecting a fourth current value I4 of the water treatment device during a fourth time period;
the main control chip is used for determining the running state of the first device according to the first current value I1; determining an operating state of a second device according to the first current value I1 and the second current value I2; determining an operating state of a third device from the second current value I2 and the third current value I3; determining an operating state of the second device and/or the third device based on the fourth current value I4.
9. The failure detection device according to claim 8,
the electric quantity metering module is further used for detecting a fifth current value I5 of the water treatment equipment when the third device stops running;
the main control chip is also used for controlling the third device to stop running; for the fifth current value I5 being greater than Ith3-Ith1 or less than Ith4-Ith2, determining that the second device is malfunctioning; and when the fifth current value I5 is greater than or equal to Ith3-Ith1 and less than or equal to Ith4-Ith2, determining that the second device normally operates and the third device fails.
10. The failure detection device according to claim 9,
the electric quantity metering module is further used for detecting a sixth current value I6 of the water treatment equipment when the second device stops running;
the main control chip is also used for controlling the second device to stop running; for the sixth current value I6 being greater than Ith5-Ith3 or less than Ith6-Ith4, determining that the third device is malfunctioning; when the sixth current value I6 is less than or equal to Ith5-Ith3 and greater than or equal to Ith6-Ith4, the third device operates normally.
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