CN109490675A - Method for early warning, electronic equipment and test macro - Google Patents
Method for early warning, electronic equipment and test macro Download PDFInfo
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- CN109490675A CN109490675A CN201811612153.6A CN201811612153A CN109490675A CN 109490675 A CN109490675 A CN 109490675A CN 201811612153 A CN201811612153 A CN 201811612153A CN 109490675 A CN109490675 A CN 109490675A
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- frequency converter
- voltage frequency
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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
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/185—Electrical failure alarms
Abstract
The present embodiments relate to the field of test technology, a kind of method for early warning, electronic equipment and test macro are disclosed.The method for early warning is applied to the operator of test macro, and test macro further includes controller, and is connected to the high-voltage frequency converter of controller；Method includes: the current operating data for receiving the high-voltage frequency converter that controller is sent；According to current operating data and preset warning data, determine whether high-voltage frequency converter can break down；If it is determined that high-voltage frequency converter can break down, preset pre-warning signal is issued.It in the present invention, can prejudge whether high-voltage frequency converter can break down in advance, and before high-voltage frequency converter generates fault alarm, issue a pre-warning signal.
Description
Technical field
The present embodiments relate to the field of test technology, in particular to a kind of method for early warning, electronic equipment and test system
System.
Background technique
Frequency converter is to be handed over using converter technique and microelectric technique by changing motor frequency mode of working power supply to control
The electric control appliance of galvanic electricity motivation.High-voltage frequency converter belongs to one kind of frequency converter, and voltage rating is up to 10KV, in order to guarantee
Safety will issue fault alarm, when the operating parameter of high-voltage frequency converter is more than the threshold value of setting to notify tester.
At least there are the following problems in the prior art for inventor's discovery: currently, tester is notified by fault alarm,
If tester's experience is inadequate, can be generated because of unexpected fault alarm panic；Also, high-voltage frequency converter has occurred and that at this time
Failure, if taken measures not in time, or even can threaten the safety of tester.
Summary of the invention
Embodiment of the present invention is designed to provide a kind of method for early warning, electronic equipment and test macro, Neng Gouti
Whether preceding anticipation high-voltage frequency converter can break down, and before high-voltage frequency converter generates fault alarm, issue an early warning letter
Number.
In order to solve the above technical problems, embodiments of the present invention provide a kind of method for early warning, it is applied to test macro
Operator, test macro further includes controller, and is connected to the high-voltage frequency converter of controller；Method includes: reception control
The current operating data for the high-voltage frequency converter that device is sent；According to current operating data and preset warning data, high voltage variable is determined
Whether frequency device can break down；If it is determined that high-voltage frequency converter can break down, preset pre-warning signal is issued.
Embodiments of the present invention additionally provide a kind of operator, comprising: at least one processor；And at least one
The memory of a processor communication connection；Wherein, memory is stored with the instruction that can be executed by least one processor, instructs quilt
At least one processor executes, so that at least one processor is able to carry out such as above-mentioned method for early warning.
It includes: controller, the high voltage variable for being connected to controller that embodiments of the present invention, which additionally provide a kind of test macro,
Frequency device and operator；Controller is used to obtain the current operating data of high-voltage frequency converter, and current operating data is sent to
Operator；Operator is used to receive the current operating data of controller transmission；Operator be also used to according to current operating data with
Preset warning data, determines whether high-voltage frequency converter can break down, and is determining that high-voltage frequency converter can break down, and issues
Preset pre-warning signal.
In terms of existing technologies, operator receives high-voltage frequency converter by controller and currently transports embodiment of the present invention
Row data, and according to current operating data and preset operation data, to prejudge whether high-voltage frequency converter can break down, if
It will break down, issue warning signal when prejudging result；It can prejudge whether high-voltage frequency converter can break down in advance, from
And before high-voltage frequency converter generates fault alarm, a pre-warning signal is issued, to prompt tester it is possible that failure,
Avoid the fault alarm issued suddenly that tester is caused to generate flurried；Meanwhile being taken timely measure convenient for tester, it avoids
The generation of failure further protects the safety of tester.
In addition, warning data includes operating normally data；According to current operating data and preset operation data, determine high
Whether voltage frequency changer can break down, specifically: judge whether current operating data matches with normal operation data；When current fortune
When row data and normal operation data mismatch, determine that high-voltage frequency converter can break down.Present embodiments provide for a kind of
According to current operating data and preset operation data, the specific implementation whether high-voltage frequency converter can break down is determined.
In addition, warning data includes operating normally data and fault data, according to current operating data and preset early warning
Data, determine whether high-voltage frequency converter can break down, specifically: judge current operating data and operate normally data whether
Match and whether current operating data matches with fault data；When current operating data and data mismatch is operated normally, and is worked as
When preceding operation data is matched with fault data, determine that high-voltage frequency converter can break down.Present embodiments provide for another roots
According to current operating data and preset operation data, the specific implementation whether high-voltage frequency converter can break down is determined, lead to
The double verification for operating normally data and fault data is crossed, to improve the accuracy of failure anticipation.
In addition, current operation data packet includes multiple operating parameters；Operating normally data includes the normal of multiple operating parameters
Range；Fault data includes the fault coverage of multiple operating parameters；Judge current operating data and operate normally data whether
Match and whether current operating data matches with fault data, comprising: for each operating parameter, whether judges operating parameter
Whether it is located at corresponding fault coverage positioned at corresponding normal range (NR) and operating parameter；When in the presence of an at least operating parameter position
In outside corresponding normal range (NR), and when an at least operating parameter is located in corresponding fault coverage, determine that high-voltage frequency converter can be sent out
Raw failure.Judge whether current operating data matches with normal operation data present embodiments provide for a kind of, and current fortune
Row data and the whether matched specific implementation of fault data.
In addition, multiple operating parameters include following one of any or any combination；Export current change quantity, output voltage becomes
Change amount, output frequency variable quantity and output torque variable quantity.Present embodiments provide for the concrete types of operating parameter.
In addition, after issuing preset pre-warning signal, further includes: according to the parameter value of an at least operating parameter, determine
The fault type of high-voltage frequency converter, and issue the prompt information including fault type.Present embodiment can determine high-pressure frequency-conversion
The fault type of device, and the prompt information including fault type is issued, in order to which tester can be in time according to fault type
To take emergency operation.
In addition, being separately installed with wireless communication module in controller and operator；Controller is specifically used for passing through channel radio
Believe that current operating data is sent to operator by module；Operator is specifically used for module by wireless communication and receives controller transmission
Current operating data.In present embodiment, operator is wirelessly completed to communicate with controller, to realize survey
The physical isolation of examination personnel and high-voltage frequency converter further ensure the safety of tester.
Detailed description of the invention
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element in attached drawing with same reference numbers label are expressed as similar element, remove
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is according to the block diagram for being the test macro in first embodiment according to the present invention；
Fig. 2 is according to the specific flow chart for being the method for early warning in first embodiment according to the present invention；
Fig. 3 is according to the specific flow chart for being the method for early warning in first embodiment according to the present invention；
Fig. 4 is according to the specific flow chart for being the method for early warning in first embodiment according to the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Each embodiment be explained in detail.However, it will be understood by those skilled in the art that in each embodiment party of the present invention
In formula, in order to make the reader understand this application better, many technical details are proposed.But even if without these technical details
And various changes and modifications based on the following respective embodiments, the application technical solution claimed also may be implemented.
The first embodiment of the present invention is related to a kind of method for early warning to please refer to applied to the operator in test macro
Fig. 1, test macro include controller 1, the operator 2 and high-voltage frequency converter 3 for being connected to controller 1.Controller 1 and operator
It, to realize the physical isolation of tester Yu high-voltage frequency converter 3, can be further ensured by being wirelessly connected between 2
The safety of tester, operator 2 can be that electronic equipments, the modes of wireless communication such as mobile phone, tablet computer be, for example, at this time
Bluetooth, WIFI etc..
The detailed process of the method for early warning of present embodiment is as shown in Figure 2.
Step 101, the current operating data for the high-voltage frequency converter that controller is sent is received.
Specifically, controller can acquire the output data of high-voltage frequency converter, and high voltage variable is obtained according to output data
The current operating data of frequency device, then sends operator for current operating data.
Step 102, according to current operating data and preset warning data, determine whether high-voltage frequency converter can occur event
Barrier.If so, entering step 103；Conversely, then directly terminating.
Specifically, being preset with warning data in operator, warning data can be preset by tester, Huo Zhegen
It is obtained according to the history data of record；Operator is after receiving current operating data, according to current operating data and in advance
Alert data, and can judge whether high-voltage frequency converter can generate failure；If it is determined that high-voltage frequency converter can break down, then enter step
Rapid 103；Conversely, then illustrating that high-voltage frequency converter will not break down, any operation is not made, high-voltage frequency converter continues to run.
Step 103, preset pre-warning signal is issued.
Specifically, operator when determining that high-voltage frequency converter will break down, issues an alarm signal, with prompt
Tester, alarm signal can be text prompt, voice prompting etc..
In terms of existing technologies, operator receives high-voltage frequency converter by controller and currently runs number present embodiment
According to, and according to current operating data and preset operation data, to prejudge whether high-voltage frequency converter can break down, if anticipation
It will break down, issue warning signal when as a result；It can prejudge whether high-voltage frequency converter can break down in advance, thus
Before high-voltage frequency converter generates fault alarm, a pre-warning signal is issued, to prompt tester it is possible that failure, avoids
It is flurried that the fault alarm issued suddenly causes tester to generate；Meanwhile being taken timely measure convenient for tester, avoid failure
Generation, further protect the safety of tester.
Second embodiment of the present invention is related to a kind of method for early warning.Second embodiment and first embodiment substantially phase
Together, it is in place of the main distinction: provides a kind of according to current operating data and preset operation data, determines high-voltage frequency converter
The specific implementation that whether can be broken down.
The detailed process of the method for early warning of present embodiment is as shown in Figure 3.
Step 201, the current operating data for the high-voltage frequency converter that controller is sent is received.
Specifically, current operation data packet includes multiple operating parameters, for controller in preset collection period, acquisition is high
The output parameter of voltage frequency changer, output parameter include output electric current, output voltage, output frequency and output torque etc., thus
Multiple operating parameters of the current operating data of high-voltage frequency converter, multiple operating parameter packets can be calculated according to each output data
Include following one of any or any combination；Export current change quantity, output voltage variable quantity, output frequency variable quantity and output
Torque variable quantity.
Step 202, judge whether the current operating data matches with the normal operation data.If so, entering step
203；If it is not, then directly terminating.
Specifically, warning data includes operating normally data, operating normally data includes the normal of multiple operating parameters
Range determines high-voltage frequency converter not if each operating parameter in current operating data is in the normal range (NR) of each operating parameter
It can break down, not make any operation, high-voltage frequency converter continues to run, and arrives next collection period and then secondary determining high pressure
Whether frequency converter can break down；When an at least operating parameter is outside its corresponding normal range (NR) if it exists, high-pressure frequency-conversion is determined
Device can break down, then enter step the preset pre-warning signal of 203 sendings.
In one example, it when can determine that high-voltage frequency converter can break down in multiple collection period, enters back into
Step 203 issues preset pre-warning signal, to improve the accuracy of early warning.
Step 203, preset pre-warning signal is issued.
Specifically, operator when determining that high-voltage frequency converter will break down, issues an alarm signal, with prompt
Tester, alarm signal can be text prompt, voice prompting etc..
Present embodiment provides a kind of according to current operating data and preset fortune for first embodiment
Row data determine the specific implementation whether high-voltage frequency converter can break down.
Third embodiment of the present invention is related to a kind of method for early warning.Third embodiment and first embodiment substantially phase
Together, it is in place of the main distinction: provides another kind according to current operating data and preset operation data, determine high-pressure frequency-conversion
The specific implementation whether device can break down.
The detailed process of the method for early warning of present embodiment is as shown in Figure 4.
Step 301, the current operating data for the high-voltage frequency converter that controller is sent is received.
Specifically, current operation data packet includes multiple operating parameters, for controller in preset collection period, acquisition is high
The output parameter of voltage frequency changer, output parameter include output electric current, output voltage, output frequency and output torque etc., thus
Multiple operating parameters of the current operating data of high-voltage frequency converter, multiple operating parameter packets can be calculated according to each output data
Include following one of any or any combination；Export current change quantity, output voltage variable quantity, output frequency variable quantity and output
Torque variable quantity.
Step 302, judge current operating data with operate normally data and whether match and current operating data and failure
Whether data match.If so, entering step 303；If it is not, then directly terminating.
Specifically, judge current operating data with operate normally data whether match and current operating data and therefore
Whether barrier data match, specifically: for each operating parameter, it is corresponding described to judge whether the operating parameter is located at
Whether normal range (NR) and the operating parameter are located at corresponding fault coverage.
Warning data includes operating normally data and fault data, and operating normally data includes the normal of multiple operating parameters
Range, fault data include the fault coverage of multiple operating parameters；If each operating parameter in current operating data is in each operation
In the normal range (NR) of parameter, and when each operating parameter is outside the fault coverage of each operating parameter, determine that high-voltage frequency converter will not be sent out
Raw failure, does not make any operation, and high-voltage frequency converter continues to run, and arrives next collection period and then secondary determining high-pressure frequency-conversion
Whether device can break down；An operating parameter is equal outside its corresponding normal range (NR), and at least for an at least operating parameter if it exists
When in its corresponding fault coverage, then it is abnormal to illustrate that an at least operating parameter occurs, determines that high-voltage frequency converter can break down,
Then enter step the preset pre-warning signal of 303 sendings.
It is illustrated so that operating parameter is output current change quantity as an example, the normal range (NR) for exporting current change quantity is
[a, b], output failure of the current range include (0, a) with (b, c), wherein a, b, c are regime values, and c indicates high-voltage frequency converter
The output current change threshold value to break down, when the output curent change value in current operating data [a, b] outside, and therefore
Barrier range (0, when a) or in (b, c), it is determined that high-voltage frequency converter can break down, and issue preset pre-warning signal；If current fortune
Output curent change value in row data is greater than c, then directly issues fault alarm.
Step 303, preset pre-warning signal is issued.
Specifically, operator when determining that high-voltage frequency converter will break down, issues an alarm signal, with prompt
Tester, alarm signal can be text prompt, voice prompting etc..
Preferably, after step 303, further includes:
Step 304, it according to the parameter value of an at least operating parameter, determines the fault type of high-voltage frequency converter, and issues packet
Include the prompt information of fault type.
Specifically, the fault type of high-voltage frequency converter can determine according to the parameter value for abnormal operating parameter occur,
Illustrated so that operating parameter is output current change quantity as an example, when output curent change value [a, b] outside, and in failure
Range (0, a) when, can determine high-voltage frequency converter fault type be over current fault or under-voltage fault, operator sending includes
The prompt information of the fault type, for tester's timely learning fault type.Wherein, prompt information can be voice prompting
Information, text prompt information etc..
Preferably, operator is in the fault type for determining high-voltage frequency converter, can also according to preset fault type with
The corresponding relationship of fault solution obtains the corresponding solution of the fault type, then operator can be sent out including event
The prompt information for hindering type and fault solution, so that tester can be when knowing fault type, according to failure solution
Certainly scheme operates, and avoids the generation of failure.
Present embodiment for first embodiment, provide it is another according to current operating data with it is preset
Operation data determines the specific implementation whether high-voltage frequency converter can break down, by operating normally data and number of faults
According to double verification, with improve failure anticipation accuracy.
The step of various methods divide above, be intended merely to describe it is clear, when realization can be merged into a step or
Certain steps are split, multiple steps are decomposed into, as long as including identical logical relation, all in the protection scope of this patent
It is interior；To adding inessential modification in algorithm or in process or introducing inessential design, but its algorithm is not changed
Core design with process is all in the protection scope of the patent.
Four embodiment of the invention is related to a kind of operator, including at least one processor；And at least one
Manage the memory of device communication connection；Wherein,
Memory is stored with the instruction that can be executed by least one processor, and instruction is executed by least one processor, with
At least one processor is set to be able to carry out the first method for early warning any into 3rd embodiment.
Wherein, memory is connected with processor using bus mode, and bus may include the bus of any number of interconnection
And bridge, bus is by one or more processors together with the various circuit connections of memory.Bus can also will be such as peripheral
Together with various other circuit connections of management circuit or the like, these are all well known in the art for equipment, voltage-stablizer
, therefore, it will not be further described herein.Bus interface provides interface between bus and transceiver.Transceiver
Can be an element, be also possible to multiple element, such as multiple receivers and transmitter, provide for over a transmission medium with
The unit of various other device communications.The data handled through processor are transmitted on the radio medium by antenna, further,
Antenna also receives data and transfers data to processor.
Processor is responsible for managing bus and common processing, can also provide various functions, including periodically, peripheral interface,
Voltage adjusting, power management and other control functions.And memory can be used for storage processor and execute operation when institute
The data used.
Fifth embodiment of the invention is related to a kind of test macro, referring to FIG. 1, test macro includes controller 1, connection
In the operator 2 and high-voltage frequency converter 3 of controller 1.
Controller 1 is used to obtain the current operating data of high-voltage frequency converter 3, and current operating data is sent to operator
2。
Operator 2 is used to receive the current operating data of the transmission of controller 1.
Operator 2 is also used to determine whether high-voltage frequency converter 3 can be sent out according to current operating data and preset warning data
Raw failure, and determining that high-voltage frequency converter 3 can break down, issue preset pre-warning signal.
In the present embodiment, wireless communication module can be installed respectively in controller 1 and operator 2, thus controller 1 with
It can be connected by wireless communication between operator 2, so that the physical isolation of tester Yu high-voltage frequency converter 3 are realized, into
One step ensure that the safety of tester, and operator 2 can be the electronic equipments such as mobile phone, tablet computer, radio communication mold at this time
Block can be bluetooth communication, WIFI communication module etc..
Current operating data is sent to operator 2 specifically for module by wireless communication by controller 1.
Operator 2 is specifically used for module by wireless communication and receives the current operating data that controller 1 is sent.
It is not difficult to find that present embodiment be with first embodiment to the corresponding system embodiment of third embodiment,
Present embodiment can work in coordination implementation with first embodiment to third embodiment.First embodiment is to third embodiment party
The relevant technical details mentioned in formula are still effective in the present embodiment, and in order to reduce repetition, which is not described herein again.Accordingly
Ground, the relevant technical details mentioned in present embodiment are also applicable in first embodiment into third embodiment.
In terms of existing technologies, operator receives high-voltage frequency converter by controller and currently runs number present embodiment
According to, and according to current operating data and preset operation data, to prejudge whether high-voltage frequency converter can break down, if anticipation
It will break down, issue warning signal when as a result；It can prejudge whether high-voltage frequency converter can break down in advance, thus
Before high-voltage frequency converter generates fault alarm, a pre-warning signal is issued, to prompt tester it is possible that failure, avoids
It is flurried that the fault alarm issued suddenly causes tester to generate；Meanwhile being taken timely measure convenient for tester, avoid failure
Generation, further protect the safety of tester.
That is, it will be understood by those skilled in the art that implement the method for the above embodiments be can be with
Relevant hardware is instructed to complete by program, which is stored in a storage medium, including some instructions are to make
It obtains an equipment (can be single-chip microcontroller, chip etc.) or processor (processor) executes each embodiment method of the application
All or part of the steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey
The medium of sequence code.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiments of the present invention,
And in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Claims (10)
1. a kind of method for early warning, which is characterized in that applied to the operator of test macro, the test macro further includes control
Device, and it is connected to the high-voltage frequency converter of the controller；The described method includes:
Receive the current operating data for the high-voltage frequency converter that the controller is sent；
According to the current operating data and preset warning data, determine whether the high-voltage frequency converter can break down；
If it is determined that the high-voltage frequency converter can break down, preset pre-warning signal is issued.
2. method for early warning according to claim 1, which is characterized in that the warning data includes operating normally data；
It is described according to the current operating data and preset operation data, determine the high-voltage frequency converter whether can occur therefore
Barrier, specifically:
Judge whether the current operating data matches with the normal operation data；When the current operating data and it is described just
When normal operation data mismatches, determine that the high-voltage frequency converter can break down.
3. method for early warning according to claim 1, which is characterized in that the warning data includes operating normally data and event
Hinder data, it is described according to the current operating data and preset warning data, determine whether the high-voltage frequency converter can occur
Failure, specifically:
Judge whether the current operating data matches and the current operation number with the normal operation data
Whether matched according to the fault data；
When the current operating data and the normals operation data mismatch, and the current operating data and the number of faults
When according to matching, determine that the high-voltage frequency converter can break down.
4. method for early warning according to claim 3, which is characterized in that the current operation data packet includes multiple operation ginsengs
Number；
It is described to operate normally the normal range (NR) that data include the multiple operating parameter；The fault data includes the multiple fortune
The fault coverage of row parameter；
It is described to judge whether the current operating data matches and the current fortune with the normal operation data
Whether row data match with the fault data, comprising:
For each operating parameter, judge whether the operating parameter is located at the corresponding normal range (NR) and described
Whether operating parameter is located at corresponding fault coverage；
It is located at outside the corresponding normal range (NR) when in the presence of at least one operating parameter, and at least one operating parameter
When in corresponding fault coverage, determine that the high-voltage frequency converter can break down.
5. method for early warning according to claim 4, which is characterized in that the multiple operating parameter includes following one of any
Or any combination；Export current change quantity, output voltage variable quantity, output frequency variable quantity and output torque variable quantity.
6. method for early warning according to claim 4, which is characterized in that after the preset pre-warning signal of sending, also
Include:
According to the parameter value of at least one operating parameter, the fault type of the high-voltage frequency converter is determined, and issue packet
Include the prompt information of the fault type.
7. a kind of operator characterized by comprising
At least one processor；And
The memory being connect at least one described processor communication；Wherein,
The memory is stored with the instruction that can be executed by least one described processor, and described instruction is by described at least one
It manages device to execute, so that at least one described processor is able to carry out the method for early warning as described in any in claim 1 to 6.
8. a kind of test macro characterized by comprising controller, the high-voltage frequency converter for being connected to the controller and behaviour
Make device；
The controller is used to obtain the current operating data of the high-voltage frequency converter, and the current operating data is sent to
The operator；
The operator is used to receive the current operating data that the controller is sent；
The operator is also used to determine that the high-voltage frequency converter is according to the current operating data and preset warning data
It is no to break down, and determining that the high-voltage frequency converter can break down, issue preset pre-warning signal.
9. test macro according to claim 8, which is characterized in that the warning data includes operating normally data and event
Hinder data；
The operator is specifically used for judging whether the current operating data matches with the normal operation data, and
Whether the current operating data matches with the fault data；And in the current operating data and the normal operation
Data mismatch, and when the current operating data is matched with the fault data, and it is former to determine that the high-voltage frequency converter can occur
Barrier.
10. test macro according to claim 8, which is characterized in that pacify respectively in the controller and the operator
Equipped with wireless communication module；
The controller is specifically used for that the current operating data is sent to the operator by the wireless communication module；
The operator is specifically used for receiving the current operation number that the controller is sent by the wireless communication module
According to.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113012402A (en) * | 2021-02-22 | 2021-06-22 | 台州市菱士达电器有限公司 | Intelligent monitoring system and intelligent monitoring method for frequency converter |
| CN113256942A (en) * | 2021-05-18 | 2021-08-13 | 中海石油深海开发有限公司 | Advanced early warning method and device for abnormal event, electronic equipment and medium |
| CN113406948A (en) * | 2021-06-21 | 2021-09-17 | 合肥美的暖通设备有限公司 | Fault data processing method and device, frequency converter, air conditioning equipment and storage medium |
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| CN113406948B (en) * | 2021-06-21 | 2023-02-03 | 合肥美的暖通设备有限公司 | Fault data processing method and device, frequency converter, air conditioning equipment and storage medium |
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