CN117387730A - Fault detection method, system, equipment and medium of water level sensor - Google Patents
Fault detection method, system, equipment and medium of water level sensor Download PDFInfo
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- CN117387730A CN117387730A CN202311630591.6A CN202311630591A CN117387730A CN 117387730 A CN117387730 A CN 117387730A CN 202311630591 A CN202311630591 A CN 202311630591A CN 117387730 A CN117387730 A CN 117387730A
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- 238000001514 detection method Methods 0.000 title claims abstract description 89
- 238000004891 communication Methods 0.000 claims abstract description 30
- 230000004044 response Effects 0.000 claims abstract description 30
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
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Abstract
The invention discloses a fault detection method, a system, equipment and a medium of a water level sensor, wherein the fault detection method comprises the following steps: reading data information of the water level sensor; and performing fault detection on the water level sensor based on the data information. According to the invention, the reset response signals, byte information and water level data of the water level sensor are processed and detected, so that the detection of communication faults, water level reset faults, data read-back error faults and water level data abnormal faults in the water level sensor is realized, the fault condition of the water level sensor can be accurately and rapidly detected, fault points are accurately positioned, the detection efficiency and detection precision are improved, and the user experience is also improved.
Description
Technical Field
The present invention relates to the field of fault detection technologies, and in particular, to a fault detection method, system, device, and medium for a water level sensor.
Background
After the machine with the water level sensing function flows into the market, the water level sensor inevitably ages or even has some faults over time, the normal use of the customer is affected by the fault of the water level sensor, and if the water level sensor is not detected possibly, the after-sale problem in the market is difficult to analyze and judge, so that how to detect and monitor the fault of the water level sensor is an important problem. In the prior art, the detection result of the water level sensor is detected, and when the water level sensor fails, only the water level sensor is known to fail, so that the failure point of the water level sensor cannot be positioned.
Disclosure of Invention
The invention aims to overcome the defect that the fault detection of a water level sensor in the prior art cannot locate a problem point, and provides a fault detection method, a system, equipment and a medium of the water level sensor.
The invention solves the technical problems by the following technical scheme:
the first aspect of the present invention provides a fault detection method of a water level sensor, the fault detection method comprising:
reading data information of the water level sensor;
and performing fault detection on the water level sensor based on the data information.
Optionally, the data information includes a reset response signal, and the step of performing fault detection on the water level sensor based on the data information specifically includes:
judging whether a reset response signal of the water level sensor is received or not; if not, determining that the water level sensor has communication faults; if yes, determining that the water level sensor is normal in communication; judging the reset mark state of the reset response signal; if the reset mark state is normal, determining that the water level of the water level sensor is normal in reset; and if the state is abnormal, determining that the water level sensor has a water level reset fault.
Optionally, the data information includes byte information, and the step of performing fault detection on the water level sensor based on the data information specifically includes:
acquiring byte information of the water level sensor;
judging whether the byte information is consistent with preset byte information or not;
if the data are consistent, determining that the water level sensor data are read back normally;
and if the data read-back errors are inconsistent, determining that the water level sensor has the data read-back errors.
Optionally, the data information includes water level data, and the step of performing fault detection on the water level sensor based on the data information specifically includes:
acquiring a water level capacitance value converted from water level data of the water level sensor;
judging whether the water level capacitance value is larger than or equal to the empty water tank capacitance value and smaller than or equal to the full water tank capacitance value;
if yes, determining that the water level data of the water level sensor is normal;
if not, determining that the water level sensor has abnormal faults of water level data.
A second aspect of the present invention provides a fault detection system of a water level sensor, the fault detection system comprising:
the reading module is used for reading the data information of the water level sensor;
and the detection module is used for carrying out fault detection on the water level sensor based on the data information.
Optionally, the data information includes a reset response signal, and the detection module specifically includes:
a first judging unit for judging whether a reset response signal of the water level sensor is received; if not, calling a first determining unit; if yes, a second determining unit is called; the first determining unit is used for determining that the water level sensor has communication faults; the second determining unit is used for determining that the water level sensor is normal in communication;
a second judging unit for judging the reset flag state of the reset response signal; if the reset mark state is normal, a third determining unit is called; if the state is abnormal, a fourth determining unit is called; the third determining unit is used for determining that the water level of the water level sensor is reset normally; and the fourth determining unit is used for determining that the water level sensor has a water level reset fault.
Optionally, the data information includes byte information, and the detection module specifically includes:
a first acquisition unit for acquiring byte information of the water level sensor;
the third judging unit is used for judging whether the byte information is consistent with the preset byte information, if so, the fifth determining unit is called, and if not, the sixth determining unit is called;
the fifth determining unit is used for determining that the water level sensor data read-back is normal;
and the sixth determining unit is used for determining that the water level sensor has a data read-back error fault.
Optionally, the data information includes water level data, and the detection module specifically includes:
the second acquisition unit is used for acquiring a water level capacitance value converted from water level data of the water level sensor;
a fourth judging unit, configured to judge whether the water level capacitance value is greater than or equal to an empty water tank capacitance value and less than or equal to a full water tank capacitance value;
if yes, a seventh determining unit is called; if not, calling an eighth determining unit;
the seventh determining unit is configured to determine that water level data of the water level sensor is normal;
the eighth determining unit is configured to determine that the water level sensor has an abnormal failure of water level data.
A third aspect of the present invention provides an electronic device comprising a processor, a memory and a computer program stored on the memory and adapted to run on the processor, the computer program when executed by the processor implementing the fault detection method of the water level sensor as described in the first aspect.
A fourth aspect of the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the fault detection method of the water level sensor according to the first aspect.
On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the invention.
The invention has the positive progress effects that: according to the invention, the data information of the water level sensor is read, and then the fault detection is carried out on the water level sensor based on the data information. According to the invention, the reset response signals, byte information and water level data of the water level sensor are processed and detected, so that the detection of communication faults, water level reset faults, data read-back error faults and water level data abnormal faults in the water level sensor is realized, the fault condition of the water level sensor can be accurately and rapidly detected, fault points are accurately positioned, the detection efficiency and detection precision are improved, and the user experience is also improved.
Drawings
Fig. 1 is a flowchart of a fault detection method of a water level sensor provided in embodiment 1 of the present invention.
Fig. 2 is a first flowchart of S2 of a fault detection method of a water level sensor provided in embodiment 1 of the present invention.
Fig. 3 is a second flowchart of S2 of the fault detection method of the water level sensor provided in embodiment 1 of the present invention.
Fig. 4 is a third flowchart of S2 of the fault detection method of the water level sensor provided in embodiment 1 of the present invention.
Fig. 5 is a block diagram of a fault detection system of a water level sensor according to embodiment 2 of the present invention.
Fig. 6 is a schematic structural diagram of an electronic device according to embodiment 3 of the present invention.
Detailed Description
The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention.
Example 1
The embodiment provides a fault detection method of a water level sensor, which can realize the detection of the fault of the water level sensor and locate a problem point. As shown in fig. 1, the fault detection method includes the steps of:
s1, reading data information of the water level sensor.
And S2, performing fault detection on the water level sensor based on the data information.
In this embodiment, the data information of the water level sensor includes a reset response signal, a reset flag state, byte information, water level data, a water level capacitance value, and the like, and by detecting different data information states, the working states of each part of the water level sensor can be obtained, so as to implement fault detection of the water level sensor, and also find a corresponding fault point according to the detected error data information, so as to implement positioning of the problem point.
In an alternative embodiment, the data information includes a reset response signal, as shown in fig. 2, S2 specifically includes the following steps:
s211, judging whether a reset response signal of the water level sensor is received or not; if not, S2111 is executed, and if yes, S2112 is executed.
S2111, determining that a communication fault occurs in the water level sensor;
s2112, determining that the water level sensor is normal in communication.
In case that the water level sensor communication is normal, S212 is performed.
S212, judging the reset mark state of the reset response signal; if the reset flag state is normal, S2121 is executed, and if the state is abnormal, S2122 is executed.
S2121, determining that the water level of the water level sensor is reset normally;
s2122, determining that a water level reset fault occurs in the water level sensor.
In this embodiment, the detection of the communication failure is performed based on the reset response signal, the water level sensor and the host adopt a single bus communication method, and the water level sensor is used as the slave, and can respond after receiving the command instruction of the host, and send data to the host. Before the communication is started by the single bus, the communication needs to be reset and started, after the host sends a reset signal, if a reset response signal of the water level sensor is not received, the communication failure is indicated, and the communication failure occurs, wherein the failure cause may be that a communication line is broken or is interfered by the outside.
Specifically, the host sends a reset signal to the water level sensor, the water level sensor receives the signal and sends a reset response signal to the host, and the host judges whether the reset response signal is received or not; if the host computer does not receive the reset response signal of the water level sensor, determining that the water level sensor has communication faults; if the host receives the reset response signal of the water level sensor, the host determines that the water level sensor is normal in communication.
In the embodiment, the detection of the water level reset fault is performed based on the reset mark, the reset mark state of the reset response signal is judged on the basis of normal communication of the water level sensor, and if the reset mark state is normal, the water level reset of the water level sensor is determined to be normal; if the reset mark state is abnormal, determining that the water level sensor has a water level reset fault. The reset flag may be set freely according to the actual situation, for example, the reset flag is set to 1, 0,1 represents normal, and 0 represents abnormal.
Specifically, in the fault detection process, the method further comprises the step of repeatedly detecting to verify the accuracy of the judging result. Under the normal communication flow of a single bus, reset is carried out before the host sends an instruction each time, multiple resets are generated within 1s, and the reset is an initialization operation which is needed to be carried out before the host sends the instruction. When the reset mark is abnormal, the reset failure time counter starts to accumulate, and when the reset failure time is accumulated to the reset preset time, the reset mark is still in an abnormal state, and then the water level sensor is determined to have a water level reset fault. The reset preset time can be flexibly set according to actual conditions, such as 1s, 5s, 10s and the like, and can also be set to other values.
In a specific example, the reset preset time is 10s, the normal state of the reset flag is set to 1, the abnormal state is set to 0, the judgment of the reset flag state is repeated, and if the reset flag state is always abnormal within 10s, the water level sensor is determined to have a water level reset fault.
In an alternative embodiment, the data information includes byte information, and as shown in fig. 3, S2 specifically includes the following steps:
s221, acquiring byte information of the water level sensor.
S222, judging whether the byte information is consistent with preset byte information; if so, S2221 is executed, and if not, S2222 is executed.
S2221, determining that the water level sensor data read-back is normal;
s2222, determining that the water level sensor has a data read-back error fault.
In this embodiment, after the host sends a command to read the register and the register of the water level sensor, the water level sensor replies the byte information of the register and the register, and the host judges whether the byte information matches with the preset byte information; if the data are consistent, determining that the water level sensor data are read back normally; if the data read-back errors are inconsistent, the water level sensor is determined to have the data read-back error faults.
Specifically, in the judging process of whether the byte information is consistent, a step of repeatedly detecting to verify the accuracy of the judging result is also included. When the byte information is inconsistent with the preset byte information, the read-back error counter starts to accumulate, and when the number of read-back errors is accumulated to the preset number of errors, the byte information is still inconsistent with the preset byte information, and then the data read-back error fault of the water level sensor is determined. The preset error times can be flexibly set according to actual conditions, such as 3 times, 5 times, 6 times, etc., and can also be set as other values.
In a specific example, the preset error number is 3, and the judgment of whether the byte information is consistent with the preset byte information is repeatedly performed, and if the byte information is inconsistent with the preset byte information, the water level sensor is determined to have a data read-back error fault.
In an alternative embodiment, the data information includes water level data, as shown in fig. 4, and S2 specifically includes the following steps:
s231, acquiring a water level capacitance value converted from water level data of the water level sensor.
S232, judging whether the capacitance value of the water level is larger than or equal to the capacitance value of the empty water tank and smaller than or equal to the capacitance value of the full water tank; if yes, executing S2321; if not, S2322 is executed.
S2321, determining that water level data of a water level sensor is normal;
s2322, determining that the water level sensor has abnormal faults of water level data.
In this embodiment, when the water level sensor has no communication fault, no water level reset fault, and no data read-back error fault, the host machine will fix the command of reading the real-time water level once every 25ms, and the data recovered by the water level sensor is converted into the corresponding water level capacitance value after being processed. If the water level capacitance value is larger than or equal to the empty water tank capacitance value and smaller than or equal to the full water tank capacitance value, determining that the water level data of the water level sensor is normal; if the water level capacitance value is smaller than the empty water tank capacitance value or larger than the full water tank capacitance value, determining that the water level sensor has abnormal faults of water level data. The empty tank capacitance is not equal to the full tank capacitance. For example, a represents the capacitance value of an empty water tank, b represents the capacitance value of a full water tank, a is not equal to b, the capacitance value range is [ a, b ], and the abnormal fault of water level data is reported if the water level capacitance value is not in the range.
Specifically, in the process of judging the correctness of the water level data, the method also comprises the step of repeatedly detecting to verify the accuracy of the judging result. When the water level capacitance value is smaller than the empty water tank capacitance value or larger than the full water tank capacitance value, the water level data fault time counter starts to accumulate, and when the water level data fault time is accumulated to a preset time, the water level capacitance value is still smaller than the empty water tank capacitance value or larger than the full water tank capacitance value, and then the water level sensor is determined to have water level data abnormal faults. The preset time can be flexibly set according to actual conditions, such as 1s, 5s, 10s, etc., and can also be set to other values.
In a specific example, the preset time is 1s, the water level capacitance value is judged multiple times within 1s, if the water level capacitance value is not in the range all the time, it is determined that the water level sensor has abnormal faults of water level data, and at the moment, the water level sensor chip may be in fault or the water level sensor chip may be in fault.
According to the method, the device and the system for detecting the water level sensor, the water level sensor is subjected to processing detection on the reset response signal, byte information and water level data, so that the detection on communication faults, water level reset faults, data read-back error faults and water level data abnormal faults in the water level sensor is realized, the fault condition of the water level sensor can be accurately and rapidly detected, fault points are accurately positioned, the detection efficiency and the detection precision are improved, and the user experience can be improved.
Example 2
The present embodiment provides a fault detection system of a water level sensor, for correspondingly implementing the fault detection method of the water level sensor in embodiment 1, as shown in fig. 5, the fault detection system of the water level sensor includes:
and a reading module 51 for reading the data information of the water level sensor.
The detection module 52 is configured to perform fault detection on the water level sensor based on the data information.
In an alternative embodiment, the data information includes a reset response signal and the detection module 52 includes the following elements:
a first judging unit for judging whether a reset response signal of the water level sensor is received; if not, calling a first determining unit; if yes, a second determining unit is called; a first determining unit for determining that the water level sensor has communication failure; and the second determining unit is used for determining that the water level sensor is normal in communication.
A second judging unit for judging the reset flag state of the reset response signal; if the reset mark state is normal, calling a third determining unit; if the state is abnormal, calling a fourth determining unit; a third determining unit for determining that the water level of the water level sensor is reset normally; and a fourth determining unit for determining that the water level sensor has a water level reset fault.
In an alternative embodiment, the data information comprises byte information and the detection module 52 comprises the following elements:
a first acquisition unit for acquiring byte information of the water level sensor;
the third judging unit is used for judging whether the byte information is consistent with the preset byte information, if so, the fifth determining unit is called, and if not, the sixth determining unit is called;
a fifth determining unit for determining that the readback of the water level sensor data is normal;
and the sixth determining unit is used for determining that the water level sensor has a data read-back error fault.
In an alternative embodiment, the data information includes water level data and the detection module 52 includes the following elements:
the second acquisition unit is used for acquiring a water level capacitance value converted from water level data of the water level sensor;
a fourth judging unit for judging whether the capacitance value of the water level is larger than or equal to the capacitance value of the empty water tank and smaller than or equal to the capacitance value of the full water tank;
if yes, a seventh determining unit is called; if not, calling an eighth determining unit;
a seventh determining unit for determining that water level data of the water level sensor is normal;
and an eighth determining unit for determining that the water level sensor has abnormal faults of the water level data.
According to the method, the device and the system for detecting the water level sensor, the water level sensor is subjected to processing detection on the reset response signal, byte information and water level data, so that the detection on communication faults, water level reset faults, data read-back error faults and water level data abnormal faults in the water level sensor is realized, the fault condition of the water level sensor can be accurately and rapidly detected, fault points are accurately positioned, the detection efficiency and the detection precision are improved, and the user experience can be improved.
It should be noted that, the working principle corresponding to the fault detection system of the water level sensor in this embodiment is the same as the working principle of the fault detection method of the water level sensor in embodiment 1, so that the description thereof is omitted here.
Example 3
The present embodiment provides an electronic device including a processor, a memory, and a computer program stored on the memory and configured to run on the processor, the computer program implementing the fault detection method of the water level sensor as in embodiment 1 when executed by the processor.
Fig. 6 is a schematic structural diagram of an electronic device according to the present embodiment. The electronic device includes a memory, a processor, and a computer program stored on the memory and used for running on the processor, the processor implementing the fault detection method of the water level sensor of embodiment 1 when executing the program, and the electronic device 30 shown in fig. 6 is merely an example and should not impose any limitation on the functions and the scope of use of the embodiment of the present invention.
The electronic device 30 may be in the form of a general purpose computing device, which may be a server device, for example. Components of electronic device 30 may include, but are not limited to: the at least one processor 31, the at least one memory 32, a bus 33 connecting the different system components, including the memory 32 and the processor 31.
The bus 33 includes a data bus, an address bus, and a control bus.
Memory 32 may include volatile memory such as Random Access Memory (RAM) 321 and/or cache memory 322, and may further include Read Only Memory (ROM) 323.
Memory 32 may also include a program/utility 325 having a set (at least one) of program modules 324, such program modules 324 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.
The processor 31 executes various functional applications and data processing, such as a failure detection method of the water level sensor of embodiment 1 of the present invention, by running a computer program stored in the memory 32.
The electronic device 30 may also communicate with one or more external devices 34 (e.g., keyboard, pointing device, etc.). Such communication may be through an input/output (I/O) interface 35. Also, model-generating device 30 may also communicate with one or more networks, such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the internet, via network adapter 36. As shown in fig. 6, network adapter 36 communicates with the other modules of model-generating device 30 via bus 33. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in connection with the model-generating device 30, including, but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, data backup storage systems, and the like.
It should be noted that although several units/modules or sub-units/modules of an electronic device are mentioned in the above detailed description, such a division is merely exemplary and not mandatory. Indeed, the features and functionality of two or more units/modules described above may be embodied in one unit/module in accordance with embodiments of the present invention. Conversely, the features and functions of one unit/module described above may be further divided into ones that are embodied by a plurality of units/modules.
Example 4
The present embodiment provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the failure detection method of the water level sensor of embodiment 1.
More specifically, among others, readable storage media may be employed including, but not limited to: portable disk, hard disk, random access memory, read only memory, erasable programmable read only memory, optical storage device, magnetic storage device, or any suitable combination of the foregoing.
In a possible embodiment, the invention may also be realized in the form of a program product comprising program code for causing a terminal device to carry out the steps of the fault detection method of the water level sensor of embodiment 1, when said program product is run on the terminal device.
Wherein the program code for carrying out the invention may be written in any combination of one or more programming languages, which program code may execute entirely on the user device, partly on the user device, as a stand-alone software package, partly on the user device and partly on the remote device or entirely on the remote device.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (10)
1. A fault detection method of a water level sensor, the fault detection method comprising:
reading data information of the water level sensor;
and performing fault detection on the water level sensor based on the data information.
2. The fault detection method of a water level sensor as claimed in claim 1, wherein the data information includes a reset response signal, and the step of performing fault detection of the water level sensor based on the data information specifically includes:
judging whether a reset response signal of the water level sensor is received or not; if not, determining that the water level sensor has communication faults; if yes, determining that the water level sensor is normal in communication; judging the reset mark state of the reset response signal; if the reset mark state is normal, determining that the water level of the water level sensor is normal in reset; and if the state is abnormal, determining that the water level sensor has a water level reset fault.
3. The fault detection method of a water level sensor as claimed in claim 1, wherein the data information includes byte information, and the fault detection of the water level sensor based on the data information specifically includes:
acquiring byte information of the water level sensor;
judging whether the byte information is consistent with preset byte information or not;
if the data are consistent, determining that the water level sensor data are read back normally;
and if the data read-back errors are inconsistent, determining that the water level sensor has the data read-back errors.
4. The fault detection method of a water level sensor as claimed in claim 1, wherein the data information includes water level data, and the step of performing fault detection on the water level sensor based on the data information specifically includes:
acquiring a water level capacitance value converted from water level data of the water level sensor;
judging whether the water level capacitance value is larger than or equal to the empty water tank capacitance value and smaller than or equal to the full water tank capacitance value;
if yes, determining that the water level data of the water level sensor is normal;
if not, determining that the water level sensor has abnormal faults of water level data.
5. A fault detection system for a water level sensor, the fault detection system comprising:
the reading module is used for reading the data information of the water level sensor;
and the detection module is used for carrying out fault detection on the water level sensor based on the data information.
6. The fault detection system of a water level sensor as claimed in claim 5, wherein the data information includes a reset response signal, and the detection module specifically includes:
a first judging unit for judging whether a reset response signal of the water level sensor is received; if not, calling a first determining unit; if yes, a second determining unit is called; the first determining unit is used for determining that the water level sensor has communication faults; the second determining unit is used for determining that the water level sensor is normal in communication;
a second judging unit for judging the reset flag state of the reset response signal; if the reset mark state is normal, a third determining unit is called; if the state is abnormal, a fourth determining unit is called; the third determining unit is used for determining that the water level of the water level sensor is reset normally; and the fourth determining unit is used for determining that the water level sensor has a water level reset fault.
7. The fault detection system of a water level sensor as claimed in claim 5, wherein the data information includes byte information, and the detection module specifically includes:
a first acquisition unit for acquiring byte information of the water level sensor;
the third judging unit is used for judging whether the byte information is consistent with the preset byte information, if so, the fifth determining unit is called, and if not, the sixth determining unit is called;
the fifth determining unit is used for determining that the water level sensor data read-back is normal;
and the sixth determining unit is used for determining that the water level sensor has a data read-back error fault.
8. The fault detection system of a water level sensor as claimed in claim 5, wherein the data information includes water level data, and the detection module specifically includes:
the second acquisition unit is used for acquiring a water level capacitance value converted from water level data of the water level sensor;
a fourth judging unit, configured to judge whether the water level capacitance value is greater than or equal to an empty water tank capacitance value and less than or equal to a full water tank capacitance value;
if yes, a seventh determining unit is called; if not, calling an eighth determining unit;
the seventh determining unit is configured to determine that water level data of the water level sensor is normal;
the eighth determining unit is configured to determine that the water level sensor has an abnormal failure of water level data.
9. An electronic device comprising a processor, a memory, and a computer program stored on the memory and configured to run on the processor, the computer program, when executed by the processor, implementing a fault detection method of a water level sensor as claimed in any one of claims 1-4.
10. A computer-readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, implements the fault detection method of the water level sensor according to any one of claims 1 to 4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311630591.6A CN117387730A (en) | 2023-11-30 | 2023-11-30 | Fault detection method, system, equipment and medium of water level sensor |
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| CN202311630591.6A CN117387730A (en) | 2023-11-30 | 2023-11-30 | Fault detection method, system, equipment and medium of water level sensor |
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| CN202311630591.6A Pending CN117387730A (en) | 2023-11-30 | 2023-11-30 | Fault detection method, system, equipment and medium of water level sensor |
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