CN110865275A - Bus fault state determination method and device - Google Patents
Bus fault state determination method and device Download PDFInfo
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- CN110865275A CN110865275A CN201810988678.3A CN201810988678A CN110865275A CN 110865275 A CN110865275 A CN 110865275A CN 201810988678 A CN201810988678 A CN 201810988678A CN 110865275 A CN110865275 A CN 110865275A
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
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Abstract
The invention discloses a method and a device for determining a fault state of a bus. Wherein, the method comprises the following steps: acquiring a bus voltage value of a driver, wherein the driver is used for driving a compressor; determining a bus voltage threshold of the driver; determining that a bus of the driver is in a potential fault state according to the bus voltage value and the bus voltage threshold; determining a first length of time that a bus of a drive is in a potential fault state; and under the condition that the first time length is longer than the preset time length, determining that the bus is in a fault state. The invention solves the technical problem of lower reliability of a processing mode of over-low voltage of the driving bus of the compressor of the electric automobile in the related technology.
Description
Technical Field
The invention relates to the technical field of compressor fault processing, in particular to a method and a device for determining a fault state of a bus.
Background
The bus voltage driven by the electric automobile compressor is provided by the whole automobile, when the system high voltage or other faults occur in the whole automobile refrigeration system, the bus voltage input driven by the compressor can be cut off by partial automobile models, the bus voltage of the driver is suddenly reduced, the output current of the driving plate can suddenly rise for ensuring stable torque output, and the driver is possibly damaged due to overlarge overshoot current. When the bus voltage of the compressor driver of the whole vehicle fluctuates, the current output by the driving plate fluctuates to output stable torque, so that the compressor is unstable in operation and even stalled, and the user experience of a refrigeration system is influenced.
Aiming at the problem that the reliability of the processing mode of the over-low voltage of the compressor driving bus of the electric automobile in the related technology is low, an effective solution is not provided at present.
Disclosure of Invention
The embodiment of the invention provides a method and a device for determining a bus fault state, which are used for at least solving the technical problem of low reliability of a processing mode of over-low voltage of a compressor driving bus of an electric vehicle in the related art.
According to an aspect of the embodiments of the present invention, there is provided a method for determining a fault state of a bus, including: acquiring a bus voltage value of a driver, wherein the driver is used for driving a compressor; determining a bus voltage threshold for the drive; determining that a bus of the drive is in a potential fault state based on the bus voltage value and the bus voltage threshold; determining a first length of time that a bus of the drive is in a potential fault state; and under the condition that the first time length is longer than a preset time length, determining that the bus is in a fault state.
Optionally, determining that the bus of the drive is in a potential fault state based on the bus voltage value and the bus voltage threshold comprises: determining that the bus of the drive is in a potential fault state if the bus voltage value is less than the bus voltage threshold or a product of the bus voltage threshold and a predetermined coefficient.
Optionally, after determining that the bus is in the fault state, the method for determining the fault state of the bus further includes: generating an alarm signal of a bus fault state; and sending the alarm signal to the compressor, wherein the compressor stops running after receiving the alarm signal.
Optionally, after determining that the bus is in the fault state, the method for determining the fault state of the bus further includes: determining that a current bus voltage value is greater than a preset voltage threshold, wherein the preset voltage threshold is the sum of the bus voltage threshold and a return difference voltage, and the return difference voltage is determined according to a preset voltage and a fault recovery voltage; determining that a bus of the drive is in a non-fault state.
Optionally, after determining that the bus of the driver is in the non-fault state, the method for determining the fault state of the bus further includes: counting a second time length of a bus of the driver in a non-fault state; under the condition that the second duration is longer than the preset duration, judging whether the number of times that the bus of the driver is in the fault state is smaller than the number of times that the bus of the driver is locked in the fault state; if the judgment result is yes, generating a fault recovery signal; and sending the fault recovery signal to a compressor, wherein the compressor operates after receiving the fault recovery signal.
According to another aspect of the embodiments of the present invention, there is also provided a device for determining a fault state of a bus, including: the device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring a bus voltage value of a driver, and the driver is used for driving a compressor; a first determination unit for determining a bus voltage threshold of the driver; a second determination unit for determining that the bus of the drive is in a potential fault state according to the bus voltage value and the bus voltage threshold; a third determination unit for determining a first duration that a bus of the drive is in a potential fault state; and the fourth determining unit is used for determining that the bus is in a fault state under the condition that the first time length is longer than the preset time length.
Optionally, the second determining unit includes: a first determination module to determine that a bus of the drive is in a potential fault state if the bus voltage value is less than the bus voltage threshold or a product of the bus voltage threshold and a predetermined coefficient.
Optionally, the bus fault state determining device further includes: the first generating unit is used for generating an alarm signal of the fault state of the bus after the bus is determined to be in the fault state; and the first sending unit is used for sending the alarm signal to the compressor, wherein the compressor stops running after receiving the alarm signal.
Optionally, the bus fault state determining device further includes: a fifth determining unit, configured to determine that a current bus voltage value is greater than a preset voltage threshold after determining that the bus is in a fault state, where the preset voltage threshold is a sum of the bus voltage threshold and a return difference voltage, and the return difference voltage is determined according to a predetermined voltage and a fault recovery voltage; a sixth determination unit for determining that the bus of the drive is in a non-fault state.
Optionally, the bus fault state determining device further includes: the counting unit is used for counting a second time length of the bus of the driver in the non-fault state after the bus of the driver is determined to be in the non-fault state; the judging unit is used for judging whether the frequency of the bus of the driver in the fault state is less than the locking frequency of the driver in the fault state when the second duration is greater than the preset duration; the second generating unit generates a fault recovery signal when the judgment result is yes; and the second sending unit is used for sending the fault recovery signal to a compressor, wherein the compressor runs after receiving the fault recovery signal.
According to another aspect of the embodiments of the present invention, there is also provided a storage medium including a stored program, wherein the program executes the method for determining a bus fault state according to any one of the above.
According to another aspect of the embodiment of the present invention, there is further provided a processor, where the processor is configured to execute a program, where the program executes the method for determining the bus fault state described in any one of the above.
In the embodiment of the invention, the bus voltage value of the driver is obtained, wherein the driver is used for driving the compressor; determining a bus voltage threshold of the driver; determining that a bus of the driver is in a potential fault state according to the bus voltage value and the bus voltage threshold; determining a first length of time that a bus of a drive is in a potential fault state; and under the condition that the first time length is longer than the preset time length, determining that the bus is in a fault state. The bus fault state determining method provided by the embodiment of the invention can realize real-time detection of the bus voltage, and can perform fault protection when the bus voltage is lower than a bus voltage too-low protection value and the time length exceeds a preset time length, so that the technical effects that the bus voltage too-low protection can quickly respond and the driver is prevented from being damaged by the rush of the compressor current under the condition of cutting off the bus voltage of the driver are achieved, and the technical problem of lower reliability of the processing mode of driving the bus voltage to be too-low by the electric automobile compressor in the related technology is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flow chart of a method of determining a bus fault condition according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an electric vehicle finishing system according to an embodiment of the invention;
FIG. 3 is a preferred flow chart of a method of determining a bus fault condition according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a bus fault condition determination apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
When the whole vehicle refrigeration system has system high voltage or other faults, partial vehicle types can cut off the bus voltage input driven by the compressor to cause the bus voltage of the driver to suddenly drop, the output current of the driving plate can suddenly rise to ensure stable torque output, and the driver can be damaged due to overlarge overshoot current. When the bus voltage of the compressor driver of the whole vehicle fluctuates, the current output by the driving plate fluctuates to output stable torque, so that the compressor is unstable in operation and even stalled, and the user experience of the refrigeration system is influenced. The embodiment of the invention provides a driver bus voltage protection strategy, namely a method for determining the bus fault state, which can effectively distinguish bus voltage cut-off and voltage fluctuation and implement a corresponding optimal protection method. The method for determining the bus fault state will be described in detail below.
Example 1
In accordance with an embodiment of the present invention, there is provided a method embodiment of a method for determining a bus fault condition, it should be noted that the steps illustrated in the flowchart of the accompanying drawings may be performed in a computer system such as a set of computer executable instructions, and that while a logical order is illustrated in the flowchart, in some cases the steps illustrated or described may be performed in an order different than here.
Fig. 1 is a flowchart of a method for determining a fault state of a bus bar according to an embodiment of the present invention, and as shown in fig. 1, the method for determining a fault state of a bus bar includes the following steps:
and step S102, acquiring a bus voltage value of a driver, wherein the driver is used for driving the compressor.
For example, a bus voltage sampling circuit can be used to obtain a bus voltage value of the driver in real time, wherein the bus voltage value is an actual measured value of the bus.
Step S104, determining a bus voltage threshold of the driver.
The bus voltage threshold value is a bus voltage over-low protection value. That is, when it is detected that the bus voltage value obtained by actual detection is lower than the bus voltage too-low protection value, corresponding measures can be taken to protect the compressor and the carrier of the compressor. The carrier of the above compressor may be various types of automobiles, particularly electric automobiles. Fig. 2 is a schematic diagram of a whole vehicle system of an electric vehicle according to an embodiment of the present invention, and as shown in fig. 2, the whole vehicle system of the electric vehicle may include: the system comprises a whole vehicle power supply system, a refrigerating system and a compressor. Wherein, including in the refrigerating system: a compressor driver, the compressor driver may include: the system comprises a Micro Control Unit (MCU), a bus voltage sampling circuit and a driving circuit; specifically, the compressor driver further includes: a control voltage interface and a bus voltage interface. As shown in fig. 2, the entire vehicle power system is connected to the refrigeration system through the control voltage interface and the bus voltage interface, respectively, and the refrigeration system is connected to the compressor.
And step S106, determining that the bus of the driver is in a potential fault state according to the bus voltage value and the bus voltage threshold value.
Step S108, determining a first duration of a bus of a driver in a potential fault state;
and step S110, determining that the bus is in a fault state under the condition that the first time length is longer than the preset time length.
Through the steps, the bus voltage value of the driver can be obtained, wherein the driver is used for driving the compressor; determining a bus voltage threshold of the driver; determining that a bus of the driver is in a potential fault state according to the bus voltage value and the bus voltage threshold; determining a first length of time that a bus of a drive is in a potential fault state; and under the condition that the first time length is longer than the preset time length, determining that the bus is in a fault state. Compared with the prior art, when the whole vehicle refrigeration system has high system voltage or other faults, the fluctuation of the output current of the drive plate can be caused, so that the compressor is unstable in operation and even stalled, and the user experience of the refrigeration system is influenced. The bus fault state determining method provided by the embodiment of the invention can realize real-time detection of the bus voltage, and can perform fault protection when the bus voltage is lower than a bus voltage too-low protection value and the time length exceeds a preset time length, so that the technical effects that the bus voltage too-low protection can quickly respond and the driver is prevented from being damaged by the rush of the compressor current under the condition of cutting off the bus voltage of the driver are achieved, and the technical problem of lower reliability of the processing mode of driving the bus voltage to be too-low by the electric automobile compressor in the related technology is solved.
As an alternative embodiment of the present invention, determining that the bus of the drive is in the potential fault state based on the bus voltage value and the bus voltage threshold may include: in the event that the bus voltage value is less than the bus voltage threshold or the product of the bus voltage threshold and a predetermined coefficient, determining that the bus of the drive is in a potential fault state.
The bus voltage threshold is mainly used as a reference value for protecting the bus voltage, that is, the bus voltage threshold (i.e., the bus voltage undervoltage protection value) may have a plurality of stages. In the embodiment of the present invention, three bus undervoltage protection levels are exemplified, for example, a primary protection value Vset, a secondary protection value a1 × Vset, and a tertiary protection value a2 × Vset. Note that a1 and a2 are coefficients of the bus voltage undervoltage protection value, and the bus voltage can be protected in stages by the coefficients, and the smaller the voltage decrease, the faster the protection response.
In addition, after determining that the bus is in the fault state, the method for determining the fault state of the bus may further include: generating an alarm signal of a bus fault state; and sending the alarm signal to the compressor, wherein the compressor stops running after receiving the alarm signal.
Preferably, after determining that the bus is in the fault state, the method for determining the fault state of the bus may further include: determining that the current bus voltage value is greater than a preset voltage threshold, wherein the preset voltage threshold is the sum of the bus voltage threshold and return difference voltage, and the return difference voltage is determined according to preset voltage and fault recovery voltage; a bus of the drive is determined to be in a non-fault state. That is, a back-off voltage is set between the low-voltage alarm voltage (i.e., the bus voltage threshold) and the fault recovery voltage, and when it is detected that the bus voltage has recovered the fault, the compressor is prevented from being repeatedly started and stopped. A voltage value may be added as a reference value for the bus voltage based on the bus voltage threshold. The voltage value may be a return difference voltage. And when the measured bus voltage value is larger than the sum of the bus voltage threshold value and the return difference voltage, determining that the bus of the driver is in a non-fault state.
As an optional embodiment of the present invention, after determining that the bus of the drive is in the non-fault state, the method for determining the fault state of the bus may further include: counting a second time length of a bus of the driver in a non-fault state; under the condition that the second duration is longer than the preset duration, judging whether the number of times that the bus of the driver is in the fault state is smaller than the number of times that the bus of the driver is locked in the fault state; if the judgment result is yes, generating a fault recovery signal; and sending a fault recovery signal to the compressor, wherein the compressor operates after receiving the fault recovery signal.
An alternative embodiment of the invention is described in detail below in conjunction with the following description.
Fig. 3 is a preferred flowchart of a bus fault status determination method according to an embodiment of the present invention, and as shown in fig. 3, the bus fault status determination method may include the following steps:
step S301, bus voltage is detected in real time to obtain a bus voltage value.
Step S302, judging whether the bus voltage value is less than the bus voltage over-low protection value. If the determination result is yes, step S303 is executed.
Step S303, determine whether a first time period during which the bus voltage value is less than the primary protection value Vset is greater than a first predetermined time period. If the determination result is yes, step S304 is executed; otherwise, step S305 is executed. The first predetermined time period is a time period Tcheck when the bus voltage is detected to be lower than the primary protection value Vset.
And step S304, sending out an alarm signal that the bus voltage is too low.
Step S305, clearing a first timer for counting a first time length that the bus voltage value is less than the primary protection value Vset.
In step S306, it is determined whether the bus voltage value is less than the secondary protection value a1 × Vset. If the determination result is yes, step S307 is executed.
In step S307, it is determined whether the duration two that the bus voltage value is less than the secondary protection value a1 × Vset is greater than the predetermined duration two. If the determination result is yes, step S308 is executed; otherwise, step S309 is executed. The predetermined time duration two is a time duration B1 Tcheck when the bus voltage is detected to be lower than the secondary protection value a1 Vset, and B1 is a time coefficient.
And step S308, sending out an alarm signal that the bus voltage is too low.
Step S309, clearing the second timer for counting the second time duration that the bus voltage value is less than the second protection value a1 × Vset.
In step S310, it is determined whether the bus voltage value is less than the three-level protection value a2 × Vset. If the determination result is yes, step S311 is executed.
In step S311, it is determined whether the duration three that the bus voltage value is less than the tertiary protection value a2 × Vset is greater than the predetermined duration three. If the determination result is yes, step S312 is executed; otherwise, step S313 is executed. The predetermined time length three is a time length B2 Tcheck when the bus voltage is detected to be lower than the three-level protection value a2 Vset, and B2 is a time coefficient.
And step S312, sending out an alarm signal that the bus voltage is too low.
And step 313, clearing a third timer for counting the time length three of the bus voltage value less than the three-level protection value A2 × Vset.
In step S314, the compressor is stopped.
In step S315, the number of times that the bus voltage is lower than the predetermined voltage is counted.
Step S316, determining whether the current bus voltage is greater than the sum of the predetermined voltage and the back voltage. If the determination result is yes, step S317 is executed.
Step S317, it is determined whether a duration four of whether the current bus voltage is greater than the sum of the predetermined voltage and the return difference voltage is greater than the predetermined duration four. If the determination result is yes, step S318 is executed; otherwise, step S319 is executed. Wherein the predetermined time is the time for the bus voltage recovery fault.
Step S318, determine whether the number of times Tdefault that the bus of the driver is in the fault state is less than the number of times Tlock that the bus of the driver is in the fault state. If yes, step S320 is executed, otherwise step S321 is executed.
Step S319, clearing the timer four for counting whether the time length four that the current bus voltage is greater than the sum of the predetermined voltage and the back voltage is greater than the predetermined time length four.
In step S320, the compressor is allowed to start.
Step S321, fail-lock.
The coefficient a1 is a constant smaller than 1, and the coefficient a2 is a constant smaller than a 1. The time coefficient B1 is a constant less than 1, and the time coefficient B2 is a constant less than the time coefficient B1.
In this embodiment, bus voltage under-protection may be performed on the bus voltage, and further, the bus voltage under-protection values may be graded, such as primary protection value Vset, secondary protection value a1 Vset, tertiary protection value a2 Vset, specifically ① reports a bus voltage under-fault and stops when Vreal < Vset and duration Tcheck, and reports a bus voltage under-fault and stops when Vreak < a2 Vset and duration B2 Tcheck.
The method for determining the fault state of the bus provided by the embodiment of the invention can achieve the following technical effects.
1. Under the condition of cutting off the bus voltage of the driver, the bus voltage is too low, the protection can be fast corresponding, and the phenomenon that the current of the compressor is rushed up and the driver is damaged is prevented.
2. Under the condition that the input of the bus voltage is unstable, the unstable degree of the bus voltage can be effectively identified, and whether the shutdown is needed or not is judged.
3. Under the unstable condition of bus voltage output, after the trouble many times, can effectively lock, prevent that the compressor from opening repeatedly and stopping, causing the damage to refrigerating system.
4. The anti-interference performance of bus voltage sampling is enhanced, and the bus voltage is effectively prevented from being excessively low and protected by mistake.
5. And detecting the bus voltage in real time, wherein the bus voltage is lower than the protection voltage of the corresponding grade, and performing fault protection when the corresponding time is met.
6. And detecting the bus voltage in real time, wherein the bus voltage is greater than a recovery value, and when the corresponding time is met, the fault is recovered when the fault is less than the locking times, otherwise, the fault is locked.
Example 2
The embodiment of the present invention further provides a device for determining a bus fault state, and it should be noted that the device for determining a bus fault state according to the embodiment of the present invention may be used to execute the method for determining a bus fault state provided by the embodiment of the present invention. The following describes a bus fault state determination device provided in an embodiment of the present invention.
Fig. 4 is a schematic diagram of a bus fault state determination device according to an embodiment of the present invention, and as shown in fig. 4, the bus fault state determination device may include: an acquisition unit 41, a first determination unit 43, a second determination unit 45, a third determination unit 47 and a fourth determination unit 49. The following describes the bus fault state determination device in detail.
An obtaining unit 41 is configured to obtain a bus voltage value of a driver, where the driver is configured to drive the compressor.
A first determination unit 43 for determining a bus voltage threshold of the driver.
A second determination unit 45 for determining that the bus of the drive is in a potential fault state based on the bus voltage value and the bus voltage threshold.
A third determination unit 47 for determining a first duration of time that a bus of the drive is in a potential fault state.
A fourth determination unit 49 for determining that the bus bar is in a fault state if the first time length is greater than the predetermined time length.
In this embodiment, the bus voltage value of the driver for driving the compressor may be acquired by the acquisition unit; simultaneously determining a bus voltage threshold of the driver by using the first determination unit; determining that the bus of the driver is in a potential fault state according to the bus voltage value and the bus voltage threshold value by using a second determination unit; then, determining a first duration that a bus of the driver is in a potential fault state by using a third determination unit; and determining that the bus is in a fault state by using the fourth determination unit under the condition that the first time length is longer than the preset time length. Compared with the prior art, when the whole vehicle refrigeration system has high system voltage or other faults, the fluctuation of the output current of the drive plate can be caused, so that the compressor is unstable in operation and even stalled, and the user experience of the refrigeration system is influenced. The bus fault state determining device provided by the embodiment of the invention can realize real-time detection on the bus voltage, and can perform fault protection when the bus voltage is lower than a bus voltage too-low protection value and the time length exceeds a preset time length, so that the technical effects that the bus voltage too-low protection can quickly respond and the driver is prevented from being damaged by the rush of the compressor current under the condition of cutting off the bus voltage of the driver are achieved, and the technical problem of lower reliability of the processing mode of driving the bus voltage to be too-low by the electric automobile compressor in the related technology is solved.
As an alternative embodiment of the present invention, the second determining unit may include: a first determination module to determine that a bus of the drive is in a potential fault state if the bus voltage value is less than a bus voltage threshold or a product of the bus voltage threshold and a predetermined coefficient.
As an optional embodiment of the present invention, the apparatus for determining a fault state of a bus may further include: the first generating unit is used for generating an alarm signal of the fault state of the bus after the bus is determined to be in the fault state; and the first sending unit is used for sending the alarm signal to the compressor, wherein the compressor stops running after receiving the alarm signal.
As an optional embodiment of the present invention, the apparatus for determining a fault state of a bus may further include: the fifth determining unit is used for determining that the current bus voltage value is larger than a preset voltage threshold value after the bus is determined to be in the fault state, wherein the preset voltage threshold value is the sum of the bus voltage threshold value and a return difference voltage, and the return difference voltage is determined according to the preset voltage and the fault recovery voltage; and a sixth determining unit for determining that the bus of the drive is in a non-fault state.
As an optional embodiment of the present invention, the apparatus for determining a fault state of a bus may further include: the counting unit is used for counting a second time length of the bus of the driver in the non-fault state after the bus of the driver is determined to be in the non-fault state; the judging unit is used for judging whether the frequency of the bus of the driver in the fault state is less than the locking frequency of the driver in the fault state when the second duration is greater than the preset duration; the second generating unit generates a fault recovery signal when the judgment result is yes; and a second transmitting unit for transmitting the failure recovery signal to the compressor, wherein the compressor operates upon receiving the failure recovery signal.
The bus fault state determination device comprises a processor and a memory, wherein the acquisition unit 41, the first determination unit 43, the second determination unit 45, the third determination unit 47, the fourth determination unit 49 and the like are stored in the memory as program units, and the processor executes the program units stored in the memory to realize corresponding functions.
The processor comprises a kernel, and the kernel calls a corresponding program unit from the memory. The kernel can be set to be one or more, and the bus is determined to be in a fault state by adjusting the kernel parameters under the condition that the first time length is longer than the preset time length.
The memory may include volatile memory in a computer readable medium, Random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM), and the memory includes at least one memory chip.
According to another aspect of the embodiments of the present invention, there is also provided a storage medium including a stored program, wherein the program performs the method for determining a bus bar fault state of any one of the above.
According to another aspect of the embodiment of the present invention, there is provided a processor, where the processor is configured to execute a program, where the program executes the method for determining the bus fault state in any one of the above.
The embodiment of the present invention further provides an apparatus, which includes a processor, a memory, and a program stored in the memory and executable on the processor, and when the processor executes the program, the following steps are implemented: collecting body parameters; through the exercise model, confirm the exercise mode that the physical parameter that gathers corresponds, wherein, the exercise model is obtained for using multiunit data through machine learning training, and every group data in the multiunit data all includes: the physical parameters and the exercise modes corresponding to the physical parameters; and sending prompt information carrying the determined exercise mode.
There is also provided in an embodiment of the invention a computer program product adapted to perform a program for initializing the following method steps when executed on a data processing device: collecting body parameters; through the exercise model, confirm the exercise mode that the physical parameter that gathers corresponds, wherein, the exercise model is obtained for using multiunit data through machine learning training, and every group data in the multiunit data all includes: the physical parameters and the exercise modes corresponding to the physical parameters; and sending prompt information carrying the determined exercise mode.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit 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 invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (12)
1. A method for determining a fault condition of a bus, comprising:
acquiring a bus voltage value of a driver, wherein the driver is used for driving a compressor;
determining a bus voltage threshold for the drive;
determining that a bus of the drive is in a potential fault state based on the bus voltage value and the bus voltage threshold;
determining a first length of time that a bus of the drive is in a potential fault state;
and under the condition that the first time length is longer than a preset time length, determining that the bus is in a fault state.
2. The method of claim 1, wherein determining that the bus of the drive is in the potential fault state based on the bus voltage value and the bus voltage threshold comprises:
determining that the bus of the drive is in a potential fault state if the bus voltage value is less than the bus voltage threshold or a product of the bus voltage threshold and a predetermined coefficient.
3. The method of claim 1, after determining that the bus bar is in a fault state, further comprising:
generating an alarm signal of a bus fault state;
and sending the alarm signal to the compressor, wherein the compressor stops running after receiving the alarm signal.
4. The method of claim 3, after determining that the bus bar is in the fault state, further comprising:
determining that a current bus voltage value is greater than a preset voltage threshold, wherein the preset voltage threshold is the sum of the bus voltage threshold and a return difference voltage, and the return difference voltage is determined according to a preset voltage and a fault recovery voltage;
determining that a bus of the drive is in a non-fault state.
5. The method of claim 4, after determining that the bus of the drive is in a non-fault state, further comprising:
counting a second time length of a bus of the driver in a non-fault state;
under the condition that the second duration is longer than the preset duration, judging whether the number of times that the bus of the driver is in the fault state is smaller than the number of times that the bus of the driver is locked in the fault state;
if the judgment result is yes, generating a fault recovery signal;
and sending the fault recovery signal to a compressor, wherein the compressor operates after receiving the fault recovery signal.
6. A bus fault condition determining apparatus, comprising:
the device comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring a bus voltage value of a driver, and the driver is used for driving a compressor;
a first determination unit for determining a bus voltage threshold of the driver;
a second determination unit for determining that the bus of the drive is in a potential fault state according to the bus voltage value and the bus voltage threshold;
a third determination unit for determining a first duration that a bus of the drive is in a potential fault state;
and the fourth determining unit is used for determining that the bus is in a fault state under the condition that the first time length is longer than the preset time length.
7. The apparatus according to claim 6, wherein the second determining unit comprises:
a first determination module to determine that a bus of the drive is in a potential fault state if the bus voltage value is less than the bus voltage threshold or a product of the bus voltage threshold and a predetermined coefficient.
8. The apparatus of claim 6, further comprising:
the first generating unit is used for generating an alarm signal of the fault state of the bus after the bus is determined to be in the fault state;
and the first sending unit is used for sending the alarm signal to the compressor, wherein the compressor stops running after receiving the alarm signal.
9. The apparatus of claim 8, further comprising:
a fifth determining unit, configured to determine that a current bus voltage value is greater than a preset voltage threshold after determining that the bus is in a fault state, where the preset voltage threshold is a sum of the bus voltage threshold and a return difference voltage, and the return difference voltage is determined according to a predetermined voltage and a fault recovery voltage;
a sixth determination unit for determining that the bus of the drive is in a non-fault state.
10. The apparatus of claim 9, further comprising:
the counting unit is used for counting a second time length of the bus of the driver in the non-fault state after the bus of the driver is determined to be in the non-fault state;
the judging unit is used for judging whether the frequency of the bus of the driver in the fault state is less than the locking frequency of the driver in the fault state when the second duration is greater than the preset duration;
the second generating unit generates a fault recovery signal when the judgment result is yes;
and the second sending unit is used for sending the fault recovery signal to a compressor, wherein the compressor runs after receiving the fault recovery signal.
11. A storage medium characterized by comprising a stored program, wherein the program executes the bus bar fault state determination method according to any one of claims 1 to 5.
12. A processor, characterized in that the processor is configured to run a program, wherein the program is configured to execute the method for determining a bus bar fault status according to any one of claims 1 to 5 when running.
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