CN113075548B - State detection method, device, equipment and storage medium for electric hydrofoil motor - Google Patents
State detection method, device, equipment and storage medium for electric hydrofoil motor Download PDFInfo
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Abstract
The application provides a state detection method, device and equipment of an electric hydrofoil motor and a storage medium, wherein the state detection method of the electric hydrofoil motor comprises the steps of sampling current of the electric hydrofoil motor; carrying out deep low-pass filtering on the current of the electric hydrofoil motor to obtain a current effective value; and judging whether the electric hydrofoil motor is in an idling state according to the current effective value of the electric hydrofoil motor and the first comparison threshold value, and if so, triggering a protection mechanism. According to the method and the device, on the premise that the sensor is not added, the detection of the state of the idle running can be achieved by means of the information difference between idle running of the motor and underwater running, and a protection mechanism is executed once corresponding idle running detection conditions are triggered. On the other hand, the current threshold value judgment can be made by using the motor current effective value I s, wherein the actual running current of the motor can be accurately reflected by carrying out the depth filtering treatment on the motor current effective value I s, so that the detection accuracy of the state body of the electric hydrofoil motor is improved.
Description
Technical Field
The application relates to the technical field of motor detection, in particular to a state detection method, device and equipment of an electric hydrofoil motor and a storage medium.
Background
The design of the motor sealing structure on the electric hydrofoil product is a technical difficulty. The sealing structure widely adopted at present can meet the normal work of underwater conditions. But neither allows the motor to rotate in air for a long time, because long idle runs are extremely prone to wear of the sealing structure, which affects the sealing effect. Idle use should be avoided for electric hydrofoil products for which partial products are subjected to water entry detection by adding corresponding sensors, which obviously increases system costs and BOM volume. Meanwhile, the conventional water inlet detection mode of the electric hydrofoil has the defect of low detection precision.
Disclosure of Invention
An embodiment of the application aims to provide a state detection method, device and equipment of an electric hydrofoil motor and a storage medium, which are used for improving the state detection accuracy of the electric hydrofoil motor.
To this end, a first aspect of the present application discloses a method for detecting a state of an electric hydrofoil motor, the method comprising:
sampling the current of the electric hydrofoil motor;
deep low-pass filtering is carried out on the current of the electric hydrofoil motor so as to obtain a current effective value of the electric hydrofoil motor;
detecting the rotating speed of the electric hydrofoil motor;
determining a first comparison threshold according to the rotating speed of the electric hydrofoil motor;
judging whether the electric hydrofoil motor is in an idling state according to the current effective value of the electric hydrofoil motor and the first comparison threshold value, and triggering a protection mechanism of the electric hydrofoil motor if the electric hydrofoil motor is in the idling state.
According to the method, on the premise that the sensor is not added, the detection of the state of the idle running operation can be realized by means of the information difference between the idle running operation and the underwater running operation of the motor, and a protection mechanism is executed once the corresponding idle running detection condition is triggered. On the other hand, the current threshold value judgment can be made by using the motor current effective value Is, wherein the actual running current of the motor can be accurately reflected by carrying out the depth filtering treatment on the motor current effective value Is, so that the state detection accuracy of the electric hydrofoil motor Is improved.
In a first aspect of the present application, as an optional implementation manner, the determining a first comparison threshold according to the rotation speed of the electric hydrofoil motor includes:
and determining a current value corresponding to the rotating speed of the electric hydrofoil motor in a function table according to the rotating speed of the electric hydrofoil motor and taking the current value as the first comparison threshold value, wherein the function represents the mapping relation between the rotating speed and the idle current value of the electric hydrofoil motor during idle running.
In this alternative embodiment, a current value corresponding to the rotational speed of the electric hydrofoil motor is determined in a function table from the rotational speed of the electric hydrofoil motor and used as a first comparison threshold.
In a first aspect of the present application, as an optional implementation manner, before the determining the first comparison threshold according to the rotation speed of the electric hydrofoil motor, the method further includes:
collecting idle current values of the electric hydrofoil motor at a plurality of rotating speed points;
and generating the function according to the idle current values of the electric hydrofoil motor at the rotating speed points.
In this alternative embodiment, the function can be generated from the value of the idle current of the electric hydrofoil motor at several rotational speed points.
In a first aspect of the present application, as an optional implementation manner, the determining, according to the current effective value of the electric hydrofoil motor and the first comparison threshold, whether the electric hydrofoil motor is in an idle state includes:
and when the current effective value of the electric hydrofoil motor is smaller than the first comparison threshold value, determining that the electric hydrofoil motor is in an idle state.
In this alternative embodiment, it can be determined that the electric hydrofoil motor is in an idle state when the current effective value of the electric hydrofoil motor is less than a first comparison threshold.
In a first aspect of the present application, as an optional implementation manner, after the determining whether the electric hydrofoil motor is in an idle state according to the current effective value of the electric hydrofoil motor and the first comparison threshold value, the method further includes:
when the current effective value of the electric hydrofoil motor is larger than the first comparison threshold value, judging whether the current effective value of the electric hydrofoil motor is larger than a second comparison threshold value, if so, detecting the temperature of an electric adjusting plate of the electric hydrofoil motor, and if not, determining that the electric hydrofoil motor is in an underwater running state;
when the temperature of the electric regulating plate of the electric hydrofoil motor is larger than a preset temperature value and the temperature overrun duration of the electric regulating plate is larger than a first preset time threshold, determining that the electric hydrofoil motor is in a locked-rotor running state, and triggering a locked-rotor protection mechanism;
and determining an underwater operation state of the electric hydrofoil motor when the temperature of the electric regulating plate of the electric hydrofoil motor is smaller than the preset temperature value or the temperature overrun duration of the electric regulating plate is smaller than the first preset time threshold.
In the optional implementation manner, the idle detection strategy is combined with the fusion temperature information to judge the state of the motor, so that the detection reliability can be further improved, and the false triggering problem caused by idle detection errors is effectively avoided.
In a first aspect of the present application, as an optional implementation manner, after the determining whether the electric hydrofoil motor is in an idle state according to the current effective value of the electric hydrofoil motor and the first comparison threshold value, the method further includes:
detecting the temperature of an electric regulating plate of the electric hydrofoil motor if the current effective value of the electric hydrofoil motor is smaller than the second comparison threshold value;
when the temperature of the electric regulating plate of the electric hydrofoil motor is larger than a preset temperature value and the temperature overrun duration of the electric regulating plate is larger than a first preset time threshold, determining that the electric hydrofoil motor is in an overcurrent fault state, and triggering a shutdown protection mechanism.
In the optional implementation manner, the idle detection strategy is combined with the fusion temperature information to judge the state of the motor, so that the detection reliability can be further improved, and the false triggering problem caused by idle detection errors is effectively avoided.
In this alternative embodiment, the method further comprises:
when the temperature of the electric regulating plate of the electric hydrofoil motor is smaller than the preset temperature value or the temperature overrun duration of the electric regulating plate is smaller than a first preset time threshold, judging whether the duration that the effective current value of the electric hydrofoil motor is smaller than the second comparison threshold is larger than the second preset time threshold, if not, determining that the electric hydrofoil motor is in an underwater operation state, if so, determining that the electric hydrofoil motor is in an idling state, and triggering an idling protection mechanism.
In the optional implementation manner, the idle detection strategy is combined with the fusion temperature information to judge the state of the motor, so that the detection reliability can be further improved, and the false triggering problem caused by idle detection errors is effectively avoided.
A second aspect of the present application discloses a condition detection apparatus for an electric hydrofoil motor, the apparatus comprising:
the sampling module is used for sampling the current of the electric hydrofoil motor;
the filtering module is used for carrying out deep low-pass filtering on the current of the electric hydrofoil motor so as to obtain a current effective value of the electric hydrofoil motor;
the detection module is used for detecting the rotating speed of the electric hydrofoil motor;
the determining module is used for determining a first comparison threshold according to the rotating speed of the electric hydrofoil motor;
and the judging module is used for judging whether the electric hydrofoil motor is in an idling state according to the current effective value of the electric hydrofoil motor and the first comparison threshold value, and triggering a protection mechanism of the electric hydrofoil motor if the electric hydrofoil motor is in the idling state.
The device of the second aspect of the present application can realize detection of an empty transportation state by means of information difference between idling of the motor and underwater operation without increasing a sensor by executing the state detection method of the electric hydrofoil motor, wherein a protection mechanism is executed once a corresponding idling detection condition is triggered. On the other hand, the current threshold value judgment can be made by using the motor current effective value Is, wherein the actual running current of the motor can be accurately reflected by carrying out the depth filtering treatment on the motor current effective value Is, so that the state detection accuracy of the electric hydrofoil motor Is improved.
A third aspect of the present application discloses a condition detection apparatus for an electric hydrofoil motor, the apparatus comprising:
a processor; and
a memory configured to store machine readable instructions that, when executed by the processor, cause the processor to perform the method of detecting a state of an electric hydrofoil motor of the first aspect of the present application.
The apparatus of the third aspect of the present application is capable of realizing detection of an empty transportation state by means of information difference between idling of the motor and running under water without increasing a sensor by executing a state detection method of an electric hydrofoil motor, wherein a protection mechanism is executed once a corresponding idling detection condition is triggered. On the other hand, the current threshold value judgment can be made by using the motor current effective value Is, wherein the actual running current of the motor can be accurately reflected by carrying out the depth filtering treatment on the motor current effective value Is, so that the state detection accuracy of the electric hydrofoil motor Is improved.
A fourth aspect of the present application discloses a storage medium storing a computer program to be executed by a processor for performing the method of detecting the state of an electric hydrofoil motor of the first aspect of the present application.
The storage medium of the fourth aspect of the present application can realize detection of an empty transportation state by means of information difference between idling of the motor and underwater operation without increasing a sensor by executing the state detection method of the electric hydrofoil motor, wherein a protection mechanism is executed once a corresponding idling detection condition is triggered. On the other hand, the current threshold value judgment can be made by using the motor current effective value Is, wherein the actual running current of the motor can be accurately reflected by carrying out the depth filtering treatment on the motor current effective value Is, so that the state detection accuracy of the electric hydrofoil motor Is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a method for detecting the state of an electric hydrofoil motor according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a state detection device for an electric hydrofoil motor according to an embodiment of the present disclosure;
fig. 3 is a schematic structural view of a state detection apparatus for an electric hydrofoil motor according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
Example 1
Referring to fig. 1, fig. 1 is a flow chart of a state detection method of an electric hydrofoil motor according to an embodiment of the present disclosure. As shown in fig. 1, the method of the embodiment of the present application includes the steps of:
101. sampling the current of the electric hydrofoil motor;
102. deep low-pass filtering is carried out on the current of the electric hydrofoil motor so as to obtain a current effective value of the electric hydrofoil motor;
103. detecting the rotating speed of the electric hydrofoil motor;
104. determining a first comparison threshold according to the rotation speed of the electric hydrofoil motor;
105. judging whether the electric hydrofoil motor is in an idling state according to the current effective value of the electric hydrofoil motor and the first comparison threshold value, and triggering a protection mechanism of the electric hydrofoil motor if the electric hydrofoil motor is in the idling state.
According to the method, on the premise that the sensor is not added, the detection of the state of the empty transportation line can be achieved by means of information difference between idle running of the motor and underwater running, and a protection mechanism is executed once corresponding idle running detection conditions are triggered. On the other hand, the embodiment of the application uses the motor current effective value Is to judge the current threshold, wherein the actual running current of the motor can be accurately reflected by carrying out the deep filtering treatment on the motor current effective value Is, so that the detection accuracy of the state body of the electric hydrofoil motor Is improved.
In the embodiment of the present application, as an optional implementation manner, step 104: determining a first comparison threshold from the rotational speed of the electric hydrofoil motor, comprising the sub-steps of:
and determining a current value corresponding to the rotating speed of the electric hydrofoil motor in a function table according to the rotating speed of the electric hydrofoil motor and taking the current value as a first comparison threshold value, wherein the function represents the mapping relation between the rotating speed and the idling current value of the electric hydrofoil motor during idling.
In this alternative embodiment, a current value corresponding to the rotational speed of the electric hydrofoil motor is determined in a function table from the rotational speed of the electric hydrofoil motor and used as a first comparison threshold.
In the embodiment of the present application, as an optional implementation manner, in step 104: before determining the first comparison threshold according to the rotation speed of the electric hydrofoil motor, the method according to the embodiment of the application further comprises the steps of:
collecting idle current values of the electric hydrofoil motor at a plurality of rotating speed points;
and generating a function according to the idle current values of the electric hydrofoil motor at a plurality of rotating speed points.
In this alternative embodiment, the function can be generated from the value of the idle current of the electric hydrofoil motor at several rotational speed points.
In the embodiment of the present application, as an optional implementation manner, step 105: judging whether the electric hydrofoil motor is in an idling state according to the current effective value of the electric hydrofoil motor and a first comparison threshold value, comprising:
and when the current effective value of the electric hydrofoil motor is smaller than a first comparison threshold value, determining that the electric hydrofoil motor is in an idle state.
In this alternative embodiment, it can be determined that the electric hydrofoil motor is in an idle state when the current effective value of the electric hydrofoil motor is less than the first comparison threshold.
In the embodiment of the present application, as an alternative implementation, in step 105: after judging whether the electric hydrofoil motor is in the idle state according to the current effective value and the first comparison threshold value of the electric hydrofoil motor, the method of the embodiment in the application further comprises the following steps:
when the current effective value of the electric hydrofoil motor is larger than a first comparison threshold value, judging whether the current effective value of the electric hydrofoil motor is larger than a second comparison threshold value, if so, detecting the temperature of an electric adjusting plate of the electric hydrofoil motor, and if not, determining that the electric hydrofoil motor is in an underwater running state;
when the temperature of the electric regulating plate of the electric hydrofoil motor is larger than a preset temperature value and the overrun duration of the temperature of the electric regulating plate is larger than a first preset time threshold, determining that the electric hydrofoil motor is in a locked-rotor running state, and triggering a locked-rotor protection mechanism;
and determining the underwater operation state of the electric hydrofoil motor when the temperature of the electric adjusting plate of the electric hydrofoil motor is smaller than a preset temperature value or the temperature overrun duration of the electric adjusting plate is smaller than a first preset time threshold.
In the optional implementation manner, the idle detection strategy is combined with the fusion temperature information to judge the state of the motor, so that the detection reliability can be further improved, and the false triggering problem caused by idle detection errors is effectively avoided.
In a first aspect of the present application, as an optional implementation manner, after determining whether the electric hydrofoil motor is in an idle state according to the current effective value of the electric hydrofoil motor and the first comparison threshold value, the method further includes:
when the current effective value of the electric hydrofoil motor is smaller than a second comparison threshold value, if so, detecting the temperature of an electric regulating plate of the electric hydrofoil motor;
when the temperature of the electric regulating plate of the electric hydrofoil motor is larger than a preset temperature value and the overrun duration of the temperature of the electric regulating plate is larger than a first preset time threshold, determining that the electric hydrofoil motor is in an overcurrent fault state, and triggering a shutdown protection mechanism.
In the optional implementation manner, the idle detection strategy is combined with the fusion temperature information to judge the state of the motor, so that the detection reliability can be further improved, and the false triggering problem caused by idle detection errors is effectively avoided.
In an embodiment of the present application, as an optional implementation manner, the method of the embodiment of the present application further includes:
when the temperature of the electric regulating plate of the electric hydrofoil motor is smaller than a preset temperature value or the duration of the overrun of the temperature of the electric regulating plate is smaller than a first preset time threshold, judging whether the duration of the effective value of the current of the electric hydrofoil motor smaller than a second comparison threshold is larger than a second preset time threshold, if not, determining that the electric hydrofoil motor is in an underwater running state, if so, determining that the electric hydrofoil motor is in an idling state, and triggering an idling protection mechanism.
In the optional implementation manner, the idle detection strategy is combined with the fusion temperature information to judge the state of the motor, so that the detection reliability can be further improved, and the false triggering problem caused by idle detection errors is effectively avoided.
Example two
Referring to fig. 2, fig. 2 is a schematic structural diagram of a state detecting device of an electric hydrofoil motor according to an embodiment of the present disclosure. As shown in fig. 2, the apparatus of the embodiment of the present application includes:
a sampling module 201 for sampling the current of the electric hydrofoil motor;
the filtering module 202 is configured to perform deep low-pass filtering on the current of the electric hydrofoil motor to obtain a current effective value of the electric hydrofoil motor;
the detection module 203 is used for detecting the rotating speed of the electric hydrofoil motor;
a determining module 204 for determining a first comparison threshold based on a rotational speed of the electric hydrofoil motor;
the judging module 205 is configured to judge whether the electric hydrofoil motor is in an idle state according to the current effective value of the electric hydrofoil motor and the first comparison threshold, and if so, trigger a protection mechanism of the electric hydrofoil motor.
According to the device, by executing the state detection method of the electric hydrofoil motor, on the premise that a sensor is not added, the detection of the state of an empty transportation line can be realized by means of information difference between idle rotation of the motor and underwater operation, and a protection mechanism is executed once corresponding idle rotation detection conditions are triggered. On the other hand, the embodiment of the application uses the motor current effective value Is to judge the current threshold, wherein the actual running current of the motor can be accurately reflected by carrying out the deep filtering treatment on the motor current effective value Is, so that the detection accuracy of the state body of the electric hydrofoil motor Is improved.
Example III
Referring to fig. 3, fig. 3 is a schematic structural diagram of a state detecting device of an electric hydrofoil motor according to an embodiment of the present disclosure. As shown in fig. 3, the apparatus of the embodiment of the present application includes:
a processor 301; and
the memory 302 is configured to store machine readable instructions that, when executed by the processor, cause the processor to perform a method of detecting a state of an electric hydrofoil motor in accordance with the first embodiment of the present application.
The device provided by the embodiment of the application can realize the detection of the state of the air transportation by means of the information difference between the idling of the motor and the underwater operation on the premise of not increasing the sensor by executing the state detection method of the electric hydrofoil motor, wherein a protection mechanism is executed once the corresponding idling detection condition is triggered. On the other hand, the embodiment of the application uses the motor current effective value Is to judge the current threshold, wherein the actual running current of the motor can be accurately reflected by carrying out the deep filtering treatment on the motor current effective value Is, so that the detection accuracy of the state body of the electric hydrofoil motor Is improved.
Example IV
The embodiment of the application discloses a storage medium, and the storage medium stores a computer program, and the computer program is executed by a processor to perform the state detection method of the electric hydrofoil motor.
According to the storage medium, by executing the state detection method of the electric hydrofoil motor, on the premise that a sensor is not added, the detection of the state of an empty transportation line can be realized by means of information difference between idling of the motor and underwater operation, and a protection mechanism is executed once corresponding idling detection conditions are triggered. On the other hand, the embodiment of the application uses the motor current effective value Is to judge the current threshold, wherein the actual running current of the motor can be accurately reflected by carrying out the deep filtering treatment on the motor current effective value Is, so that the detection accuracy of the state body of the electric hydrofoil motor Is improved.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
Further, the units described as separate units may or may not be physically separate, and units displayed as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
Furthermore, functional modules in various embodiments of the present application may be integrated together to form a single portion, or each module may exist alone, or two or more modules may be integrated to form a single portion.
It should be noted that the functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM) random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
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.
The foregoing is merely exemplary embodiments of the present application and is not intended to limit the scope of the present application, and various modifications and variations may be suggested to one skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (4)
1. A method of detecting a condition of an electric hydrofoil motor, the method comprising:
sampling the current of the electric hydrofoil motor;
deep low-pass filtering is carried out on the current of the electric hydrofoil motor so as to obtain a current effective value of the electric hydrofoil motor;
detecting the rotating speed of the electric hydrofoil motor;
determining a first comparison threshold according to the rotating speed of the electric hydrofoil motor;
judging whether the electric hydrofoil motor is in an idling state according to the current effective value of the electric hydrofoil motor and the first comparison threshold value, and if so, triggering a protection mechanism of the electric hydrofoil motor;
and determining a first comparison threshold according to the rotation speed of the electric hydrofoil motor, including:
determining a current value corresponding to the rotating speed of the electric hydrofoil motor in a function table according to the rotating speed of the electric hydrofoil motor and taking the current value as the first comparison threshold value, wherein the function represents the mapping relation between the rotating speed of the electric hydrofoil motor during idling and the idling current value;
and, prior to said determining a first comparison threshold from the rotational speed of the electric hydrofoil motor, the method further comprises:
collecting idle current values of the electric hydrofoil motor at a plurality of rotating speed points;
generating the function according to idle current values of the electric hydrofoil motor at the rotating speed points;
and determining whether the electric hydrofoil motor is in an idle state according to the current effective value of the electric hydrofoil motor and the first comparison threshold value, including:
when the current effective value of the electric hydrofoil motor is smaller than the first comparison threshold value, determining that the electric hydrofoil motor is in an idle state;
and after said determining whether the electric hydrofoil motor is in an idle state based on the current effective value of the electric hydrofoil motor and the first comparison threshold, the method further comprises:
when the current effective value of the electric hydrofoil motor is larger than the first comparison threshold value, judging whether the current effective value of the electric hydrofoil motor is larger than a second comparison threshold value, if so, detecting the temperature of an electric adjusting plate of the electric hydrofoil motor, and if not, determining that the electric hydrofoil motor is in an underwater running state;
when the temperature of the electric regulating plate of the electric hydrofoil motor is larger than a preset temperature value and the temperature overrun duration of the electric regulating plate is larger than a first preset time threshold, determining that the electric hydrofoil motor is in a locked-rotor running state, and triggering a locked-rotor protection mechanism;
when the temperature of the electric regulating plate of the electric hydrofoil motor is smaller than the preset temperature value or the temperature overrun duration of the electric regulating plate is smaller than the first preset time threshold, determining the underwater operation state of the electric hydrofoil motor;
and after said determining whether the electric hydrofoil motor is in an idle state based on the current effective value of the electric hydrofoil motor and the first comparison threshold, the method further comprises:
detecting the temperature of an electric regulating plate of the electric hydrofoil motor if the current effective value of the electric hydrofoil motor is smaller than the second comparison threshold value;
when the temperature of the electric regulating plate of the electric hydrofoil motor is larger than a preset temperature value and the overrun duration of the temperature of the electric regulating plate is larger than a first preset time threshold, determining that the electric hydrofoil motor is in an overcurrent fault state, and triggering a shutdown protection mechanism;
and, the method further comprises:
when the temperature of the electric regulating plate of the electric hydrofoil motor is smaller than the preset temperature value or the temperature overrun duration of the electric regulating plate is smaller than a first preset time threshold, judging whether the duration that the effective current value of the electric hydrofoil motor is smaller than the second comparison threshold is larger than the second preset time threshold, if not, determining that the electric hydrofoil motor is in an underwater operation state, if so, determining that the electric hydrofoil motor is in an idling state, and triggering an idling protection mechanism.
2. A condition sensing device for an electric hydrofoil motor, the device comprising:
the sampling module is used for sampling the current of the electric hydrofoil motor;
the filtering module is used for carrying out deep low-pass filtering on the current of the electric hydrofoil motor so as to obtain a current effective value of the electric hydrofoil motor;
the detection module is used for detecting the rotating speed of the electric hydrofoil motor;
the determining module is used for determining a first comparison threshold according to the rotating speed of the electric hydrofoil motor;
the judging module is used for judging whether the electric hydrofoil motor is in an idling state or not according to the current effective value of the electric hydrofoil motor and the first comparison threshold value, and triggering a protection mechanism of the electric hydrofoil motor if the electric hydrofoil motor is in the idling state;
and, the device is specifically for:
determining a current value corresponding to the rotating speed of the electric hydrofoil motor in a function table according to the rotating speed of the electric hydrofoil motor and taking the current value as the first comparison threshold value, wherein the function represents the mapping relation between the rotating speed of the electric hydrofoil motor during idling and the idling current value;
and, the apparatus is further for:
collecting idle current values of the electric hydrofoil motor at a plurality of rotating speed points;
generating the function according to idle current values of the electric hydrofoil motor at the rotating speed points;
and, the apparatus is further for:
when the current effective value of the electric hydrofoil motor is smaller than the first comparison threshold value, determining that the electric hydrofoil motor is in an idle state;
and, the apparatus is further for comprising:
when the current effective value of the electric hydrofoil motor is larger than the first comparison threshold value, judging whether the current effective value of the electric hydrofoil motor is larger than a second comparison threshold value, if so, detecting the temperature of an electric adjusting plate of the electric hydrofoil motor, and if not, determining that the electric hydrofoil motor is in an underwater running state;
when the temperature of the electric regulating plate of the electric hydrofoil motor is larger than a preset temperature value and the temperature overrun duration of the electric regulating plate is larger than a first preset time threshold, determining that the electric hydrofoil motor is in a locked-rotor running state, and triggering a locked-rotor protection mechanism;
when the temperature of the electric regulating plate of the electric hydrofoil motor is smaller than the preset temperature value or the temperature overrun duration of the electric regulating plate is smaller than the first preset time threshold, determining the underwater operation state of the electric hydrofoil motor;
and, the apparatus is further for:
detecting the temperature of an electric regulating plate of the electric hydrofoil motor if the current effective value of the electric hydrofoil motor is smaller than the second comparison threshold value;
when the temperature of the electric regulating plate of the electric hydrofoil motor is larger than a preset temperature value and the overrun duration of the temperature of the electric regulating plate is larger than a first preset time threshold, determining that the electric hydrofoil motor is in an overcurrent fault state, and triggering a shutdown protection mechanism;
and, the apparatus is further for:
when the temperature of the electric regulating plate of the electric hydrofoil motor is smaller than the preset temperature value or the temperature overrun duration of the electric regulating plate is smaller than a first preset time threshold, judging whether the duration that the effective current value of the electric hydrofoil motor is smaller than the second comparison threshold is larger than the second preset time threshold, if not, determining that the electric hydrofoil motor is in an underwater operation state, if so, determining that the electric hydrofoil motor is in an idling state, and triggering an idling protection mechanism.
3. A condition sensing apparatus for an electric hydrofoil motor, the apparatus comprising:
a processor; and
a memory configured to store machine readable instructions that, when executed by the processor, cause the processor to perform the method of state detection of an electric hydrofoil motor of any of claims 1.
4. A storage medium storing a computer program to be executed by a processor to perform the method of detecting the state of an electric hydrofoil motor according to any one of claims 1.
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